US3855997A - Sterile specimen trap - Google Patents
Sterile specimen trap Download PDFInfo
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- US3855997A US3855997A US00378349A US37834973A US3855997A US 3855997 A US3855997 A US 3855997A US 00378349 A US00378349 A US 00378349A US 37834973 A US37834973 A US 37834973A US 3855997 A US3855997 A US 3855997A
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- Prior art keywords
- cover member
- container
- fluid
- adapter cap
- specimen
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/508—Containers for the purpose of retaining a material to be analysed, e.g. test tubes rigid containers not provided for above
- B01L3/5082—Test tubes per se
- B01L3/50825—Closing or opening means, corks, bungs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/0045—Devices for taking samples of body liquids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/60—Containers for suction drainage, adapted to be used with an external suction source
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B50/00—Containers, covers, furniture or holders specially adapted for surgical or diagnostic appliances or instruments, e.g. sterile covers
- A61B2050/005—Containers, covers, furniture or holders specially adapted for surgical or diagnostic appliances or instruments, e.g. sterile covers with a lid or cover
- A61B2050/0062—Containers, covers, furniture or holders specially adapted for surgical or diagnostic appliances or instruments, e.g. sterile covers with a lid or cover closable by a combination of rotation and translation
- A61B2050/0063—Bayonet coupling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2400/00—Moving or stopping fluids
- B01L2400/06—Valves, specific forms thereof
- B01L2400/0633—Valves, specific forms thereof with moving parts
- B01L2400/0644—Valves, specific forms thereof with moving parts rotary valves
Definitions
- ABSTRACT A sterile specimen trap for use in a system for with-' drawing fluid from a patient by suction to collect and contain a fluid specimen for later analysis having a container open at one end and a closure means mounted overan opposite, open end of the container which may be operated to close and seal the interior of the container so that the container may be removed from the system while the fluid specimen it holds is maintained in a sterile condition.
- the closure means has two independently formed members, at least one of which is angularly movable about a central axis common to each to align or misalign correspondingly spaced openings formed in each member with a fluid conduit means and a suctionconduit means to establish or eliminate communication of the interior of the container with the system, respectively.
- specimen traps for use in connection with a suction aspiration system to obtain and collect respiratory, gastric and other fluid specimens from body cavities for laboratory analysis or other purposes are well known.
- Such specimen traps are normally cylindrical containers which are closed at their bottom ends and closed by a cap at their open top ends. The cap may threadedly engage the container or snap or friction-fit on to. it and normally has openings formed through it which act as fittings to carry a suction conduit extending from vacuum source and a similar, fluid conduit extending between the specimen trap and a suction instrument or catheter disposed in the patient.
- a serious problem is created by presently available specimen traps because of the high possibility of contamination of the fluid collected within the trap while the trap is being disconnected from the system and transported or stored prior to analysis.
- An attempt has been made at reducing the possibility of contamination by providing a container having a friction-fit top cover fitted with two lengths of tubing for suction and fluid connections.
- the tubing may be adapted to bronchoscope suction instruments or suction catheters and connected to the vacuum source, respectively.
- the specimen trap may be closed by joining together the two connecting tubes.
- Even'this type of trap still has the serious disadvantage that the tubing must be connected together to transport the specimen and therefore, the trap, while being disconnected from the system, is subject to possible contamination of its interior. Contamination may also be created by interlocking the tubing during storage.
- there is no presently available device which completely isolates the interior of the specimen trap from all'possible contamination before, during, and after collection of the-specimen.
- the present invention provides a sterile disposable specimen trap having a unique closure means which may be moved to open the interior of the container forming the trap into communication with the conduit means carrying fluid from the patient and the vacuum connection to the system without any possible adverse effect on the sterility of the specimen.
- the specimen trap of this invention overcomes the disadvantages of the prior art by a generally cylindrical container means closed at its bottom end and open at its top end but having a closure means securely mounted on it over its top end.
- This closure means is formed of two independent cover members, at least one of which is angularly movable relative to the other about a central axis common to both.
- Each member has a pair of openings formed in it which may be aligned by movement of one of the members a certain angular distance about their central axis to allow the interior of the container to communicate, through these openings, with both the fluid conduit and the suction conduit.
- the second independent cover member includes a generally annular disc having a downwardly extending boss at its center, which is mounted on a first independent cover member for relative movement with respect thereto.
- the first cover member is also preferably annular in configuration, havinga downwardly extending flange disposed about its periphery so that it may be mountedvover the upper edges of the top open end of the container.
- the above specimen trap assembly is preferably-fit into a specimen collection system having-an adapter cap similar in configuration to the second cover member, that is, having a downwardly extending peripheral flange disposed about a generally annular body portion, and carrying a fluid conduit and a suction conduit which open therethrough.
- This adapter cap is mounted over the closure means by inserting an inwardly protruding engaging element into bayonet-shaped slotsformed on the exterior surface-of the first cover member, thereby locking the adapter'cap to the first cover memberand the container.
- the adapter cap also has means disposed on its interior surface to engage the second cover member, which is sandwiched between the adapter cap and the first cover member. The second cover member will thereby be maintained in a sta tionary position relative to the adapter cap in which the openings. formed in the second cover member are aligned with the open ends of the fluid conduit and the suction conduit carried by the adapter cap.
- the container and first cover member, and the adapter cap and second cover member may be moved relatively in an opposite direction, the engaging means moving within the bayonet slot, until the openings are brought back to their original, misaligned positions,
- the present invention therefore, overcomes the possibility of contamination of the specimen collected in the container, since the interior of the container is never opened to any external sources of contamination.
- FIG. 1 is a perspective view of the collection portion of a system for aspirating fluid from a patient, including the sterile specimen trap of the present invention
- FIG. 2 is an exploded fragmentary view of the fluid collection system shown in FIG. 1, illustrating the top portion of the specimen trap, the members forming the closure means andthe adapter cap which carries the fluid and suction conduits;
- FIG. 3 is an enlarged cross sectional view of the specimen trap of this invention taken generally along the central axis of the specimen trap of the presentinvention showing the construction of the closure means and its relationship to the container and adapter cap; and,
- FIG. 4 is a top plan view of the specimen'trap of this invention taken generally along line 3-3 in FIG. 3
- This specimen trap assembly includes a generally cylindrical container or trap 12 which is preferably closed at its bottom end and open at its top end, as shown in FIG. 2.
- a closure means 14 whose elements are shown in FIGS. 2 and 3, and which will be discussed in detail below, is mounted over the open top end of the container 12.
- the closure means 14, in turn, has an adapter or fitting cap 16 mounted over it.
- This adapter cap 16 carries the proximal ends of a fluid specimen conduit 18 and a suction conduit 20.
- Both the fluid conduit 18 and the suction conduit 20 may be formed of commonly used, clear or opaque plastic tubing and may be, in turn, fitted at their distal ends, to a conventional flexible catheter or a bronchoscope attachment (not shown) and tubing leading to the source of vacuum (not shown),
- This fitting may be accomplished by suitable means such as the frusto-conical fitting adapter 24 shown in FIG. 1.
- the suction conduit 20 may also have a suction valve 22 disposed in it to control the suction in the system.
- Closure means 14 includes a first cover member 30 and a second cover member 32.
- First cover member 30 is preferably formed'having an annular body portion 31, a downwardly extending peripheral flange portion 34 and an upwardly extending peripheral flange 35.
- First cover member 30 is mounted directly over the open top cnd of container 12 by means of interior ribs 36 shown in FIG. 4 which are received securely within corresponding exterior mounting grooves 48 disposed about the outer surface of container 12. When ribs 36 are slid into grooves 48, first cover member 30 will be held in a substantially stationary position relative to container 12. The tight fit between flange 34 and container 12 will prevent any leakage into or out of container l2.
- Second cover member 32 is preferably a disc-shaped element having-a downwardly extending boss 44 which is received into a boss opening 46 formed in first cover member 30. Second cover member 32 is held captive within flange 35 of first cover member 30, this construction reducing possibilities of leakage or movement between the two.
- First cover member 30 has a pair of spaced openings 40 formed on a chord or diameter of body portion 31, on opposite sides of boss opening 46.
- Second cover member 32 has a correspondingly disposed pair of openings 42 formed with an inward taper, as shown in FIG. 3, on a chord or adiameter of member 32 and on opposite sides of boss 44. Openings 40 and 42 are correspondingly located on their cover members with respect to a central axis of rotation 28 extending through boss 44 and bossopening 46. lnthis manner, by manipulation of first cover member 30 and second cover member 32, relative to one another, the openings 42 and 40 may be aligned with one another to form a continuous opening through closure means 14.
- Adapter cap 16 has a body portion 51 which carries the proximal, open ends of fluid conduit 18 and suction conduit 20 as shown in FIG. 2.
- Adapter cap' 16 has a downwardly extending flange 50 disposed about the periphery of this body portion 51 which is similar in configuration to the downwardly extending flange of first cover member 30.
- Adapter cap 16 is mounted over closure means 14, as shown in FIG. 3, in the following manner.
- the downwardly extending flange 50 of adapter cap 16 has a series of inwardly extending interior engaging means in the form of protrusions or gussets 52 disposed about the interior surface of downwardly extending flange 50.
- These protrusions 52 are formed so that they may be received in a number of corresponding exterior engaging means 38 formed about the exterior surface of downwardly extending flange 34 of first cover member 30.
- These exterior engaging means are preferably in the form of Lrshaped or bayonet slots having an upwardly extending leg approximately the width of the protrusion 52 to be received therein.
- the adapter cap 16 is thus placed over closure means 14 so that protrusions 52-are received within the upward leg of bayonet slots 38. This acts to lock adapter cap 16 in a relatively stationary lateral position with respect to container 12 and closure means 14.
- Adapter cap 16 has a means for engaging second cover member 32 to prevent movement of the second cover member 32 about central axis 28 relative to adapter cap 16 which might rnisalign openings 42 with the open ends of thefluid and suction conduits. It is clear that; such a means could be formed by corresponding dimples and depressions on adapter cap 16 and cover member 32,.respectively, or by protrusions on the interior of the adapter cap 16 which would engagea vertical slot formed in the side of second cover member 32 in a fashion similar to that discussed above for the adapter cap and the first cover member.
- means preferred in thisinvention include a pair of circular lips 58 which extend downwardly from the open ends 56 of conduit means '18 and 20, respectively, and are inwardly tapered or frusto-conical in configuration and of a dimension such that they may be inserted into the similarly shaped frusto-conical openings 42 formed in second cover member 32.
- the adapter cap 16 is placed over closure means 14 and container 12 with relative angular positions of the interior protrusions 52 and the engaging lips 56 being such that a protrusion 52 enters the upward leg 38a of each slot 38, and lips 58 enter the correspondingly spaced and formed openings 42 in second cover member 32.
- first cover member 30 will be angularly movable relative to adapter cap 16 and second cover member 32 by virtue-of the shape of bayonet slots 38.
- Bayonet slots 38 are, as their name indicates, formed with a narrow leg or groove 38b extending peripherally along the surface of downward flange 34 of second cover member 32.
- This generallyhorizontal leg 38b is formed of a width such that it receives the height-of the interior engaging means or protrusions 52, as shown in FIG. 3, to allow these engaging means 52 to be moved within and along it.
- the adapter cap 16 and second cover member 32 which is held stationary relative to this adapter cap by the lips 58 engaging openings 42, may be unitarily and angularly movedabout central axis 28 relative to first cover member-30, which is held in an angularly immovable position relative to container 12, until openings 42 and 40 are aligned and the openings 56 of conduits l8 and are communicated to the interior of the container 12.
- axis 28 may be accomplished by theoperator eitherholding the container 12 stationary with one hand while twisting the adapter cap 16 to move the protrusions 52 withinleg 38b of slots 38, or, alternatively, holdingtheadapter cap stationary while twisting the container 12 and first cover member 30 in an oppositedirection.
- suction is now communicated to the system by opening valve 22, it will act to withdraw fluid through fluid'conduit 18, through a rigid fluid conduit extension 60 which extends donwardly from oneopening 40 in first cover member 30 and into the interior of container 12.
- a rigid fluid conduit extension 60 which extends donwardly from oneopening 40 in first cover member 30 and into the interior of container 12.
- the second 'cover member 32 is mounted on first cover member 30 by virtue .of the boss 44 which is of such a dimension that the cover members are not freely movable relative to one another without the use of some force to overcome the friction between them. This prevents accidental alignment of the openings.
- the unique closure means 14 which prevents contamination of the interior of the container 12 is operable bymeans other than an adapter cap 16.
- the conduits 18 and 24 might be snapfitted into openings 42 and second cover member 32 held stationary while first cover member 30 and container 12 are moved.
- a fitting carrying conduit, such as adapter cap 16,- is preferred.
- cover members 30 and 32 need not be. of annular configuration so long as they are rotatable about the same axis to assure alignment of the openings in each.
- the materials suitable for manufacture of the specimen trap assembly of this invention include materials conventionally used in this type of medical and surgical made without departing from the principles of the invention.
- a sterile specimen trap particularly adaptedfor .use in obtaining a fluid specimen and maintaining said sterile condition for laboratory analysis specimenin a comprising: I container means open at one end to receive said'fluid specimen, and closure means mounted over said openend of said container means to close and seal the interior of said container means and prevent contamination of said interior of said container means, said closure means including a first annular cover member and a second annular cover member, said secondcover member being mounted on said first cover member, said second cover member and said first cover member being angularly movable-relative to one another about a concentric central axis, each of saidcover members having a pair of correspondingly spaced openings formed in them to communicate the interior of said container means with'fluid specimen conduit means and suc tion conduit means, respectively, when said open v ings are aligned, said second cover member being held in a stationary position relative to said specimen conduit means and said suction conduit means by cover retaining means, said cover retaining said suction conduit means
- adapter capmeans being mounted on said first cover member in such a manner that said second cover member is'sandwiched between said adapter cap and said first cover member and said open end portions of said fluid conduit means and said suction conduit means are aligned with said openings formed in said second cover member, a portion of said second cover member engaging said adapter cap to prevent movement of said second cover member relative to said adapter cap, said first cover membet and said second cover member thereby being angularly movable relative to one another to align the openings formed in said first cover member with the openings formed in said second cover member to communicate said fluid conduit means and said suctionconduit means to the interior of said container means to trap the fluid specimen therein, said first'cover member and said second cover member being alternately movable in an opposite manner-relative to one another, after a desired amount of the fluid specimen has been trapped in said container means, to "close said openings andeliminate communication to the interior of said container means to preserve the sterility of .the specimen trapped in said container means.
- said adapter. cap is a generally cup-shaped capinverted for mounting over said first cover member, said second cover member and said container means, and having a downwardly extending flange portion integrally fomied with and disposed about the periphery of a disc-shaped body portion, said adapter cap having inner engaging means disposed on the interior surface of said downwardly extending flange portion to engage corresponding outer engaging means disposed about the exterior surface of a similarly shaped downwardly extending pe; ripheral flange integrally formed on said first cover member and engaging said container means on its inte- 4.
- a specimen trap in communication with the patient through an opposite end of said fluid'conduit means and in communication with said vacuum means through an opposite endof said suction conduit means to receive and contain, in a sterile condition, fluid withdrawn from the patient through the fluid conduit means, including container means open at one end to receive said fluid, closure means mounted over said open end of said container means to close and seal the interior of said container means from'contamination, said closure means having at least two i ndependently formed members, each of said members having correspondingly spaced openings formed therethrough, at least one of said members being angularly movable about a centralaxis of said closure means relative to the other member, and adapter means having said open therethrough, said adapter means
- said inner engaging means includes a plurality of inwardly extending protrusions formed on the interior surface of said downwardly extending flange por-' tion of said adapter cap
- said outer engaging means includes a plurality of generally L-shaped slots formed 1 on the exterior surface of a downwardly extending portion of said first cover member, said protrusions being received in said slots to mount said adapter cap on said first cover member and said container means, and
- closure means includes a first annular cover member and a second annular cover member, each of said cover members having a pair of correspondingly spaced openings formed in them to communicate the interior of said container means with said fluid conduit means and said suction conduit means, respectively, said second cover member being mounted on said first cover member, said first cover member and said second cover member being angularly movable relative to one another about said central axis of said closure means when said second cover member is engaged by said adapter means.
- said adapter means is anadapter cap mounted on said first cover member over said second cover member in such a manner that said second cover. member is sandwiched between said adapter cap and said first cover member and said opposite open ends of said fluid conduit means member, and said adapter cap and said secondcover member engagingly held stationary by said adapter cap, to be moved relative to one another to align the openings in said first and second cover members," and establish communication to the interior of said container means, and, alternately, to misalign and close said openings.
- said suction conduit means carried by said adapter cap are aligned with said corresponding openings formed in said second cover means, a portion of said second cover means engaging said adapter cap to prevent movement of said second cover means relative to said adapter cap, said first cover member-and said second cover member being thereby angularly movable relative to one another a certain angular distance about said central axis of said closure means.
- first and second cover members being alternately movable, after a desired amount of fluid has been trapped in said container means in an opposite manner relative to one another to close said openings and preserve the sterility of said specimen.
- said adapter cap is a generally cup-shaped cap inverted for mounting over said first cover member, said second cover member and said container means, and having a downwardly extending flange portion integrally formed movement of said adapter cap and said first cover member while allowing relative angular movement of said adapter cap and said first cover member to permit alignment, and, alternately, closure of the openings formed in said first cover member and said second cover member.
- said inner engaging means includes a plurality of inwardly extending protrusions formed on the interior surface of said downwardly extending flange portion of said adapter cap
- said outer engaging means includes a plurality of generally L-shaped slots formed on the exterior surface of said downwardly extending portion of said first cover means, said protrusions being received misalign and close said openings.
Abstract
A sterile specimen trap for use in a system for withdrawing fluid from a patient by suction to collect and contain a fluid specimen for later analysis having a container open at one end and a closure means mounted over an opposite, open end of the container which may be operated to close and seal the interior of the container so that the container may be removed from the system while the fluid specimen it holds is maintained in a sterile condition. The closure means has two independently formed members, at least one of which is angularly movable about a central axis common to each to align or misalign correspondingly spaced openings formed in each member with a fluid conduit means and a suction conduit means to establish or eliminate communication of the interior of the container with the system, respectively.
Description
United States Patent [191 Sauer [451 Dec.24, 1974 [73] Assignee: Cinco Medical Health Supply Corporation, Chicago, 111.
22 Filed: July 11,1973 21 Appl. No; 378,349
[75] Inventor:
[52] US. Cl. 128/2 F, 128/276, 215/44,
215/46 R, 222/483 [51] Int. Cl.....' A6lb 10/00, A6lm 1/00 [58] Field of Search 12-8/2 F, 2 G, 275278,
l28/DIG. 5; 215/44, 46 R, DIG. 3; 137/800; 141/65, 384; 222/483, 486, 489, 519
l lalligan Svensson Primary Examiner-Kyle L. Howell Attorney, Agent, or Firm-Gomer W. Walters [57] ABSTRACT A sterile specimen trap for use in a system for with-' drawing fluid from a patient by suction to collect and contain a fluid specimen for later analysis having a container open at one end and a closure means mounted overan opposite, open end of the container which may be operated to close and seal the interior of the container so that the container may be removed from the system while the fluid specimen it holds is maintained in a sterile condition. The closure means has two independently formed members, at least one of which is angularly movable about a central axis common to each to align or misalign correspondingly spaced openings formed in each member with a fluid conduit means and a suctionconduit means to establish or eliminate communication of the interior of the container with the system, respectively.
8 Claims, 4 Drawing Figures PAIENTED M 2 3.855.997
sum 1 pg 2 TO PATI FNT TO VACUUM STERILE SPECIMEN TRAP BACKGROUND OF THE INVENTION procedures, and, in particular, to a trap used in a suction system to collect such fluids.
Specimen traps for use in connection with a suction aspiration system to obtain and collect respiratory, gastric and other fluid specimens from body cavities for laboratory analysis or other purposes are well known. Such specimen traps are normally cylindrical containers which are closed at their bottom ends and closed by a cap at their open top ends. The cap may threadedly engage the container or snap or friction-fit on to. it and normally has openings formed through it which act as fittings to carry a suction conduit extending from vacuum source and a similar, fluid conduit extending between the specimen trap and a suction instrument or catheter disposed in the patient.
When the vacuum source is activated, suction is established within the system and fluid is aspirated out of the bodycavity of the patient, through the fluid conduit means and into the larger diameter specimen trap. When a satisfactory amount of fluid has been collected, the system is disconnected from the vacuum source and the trap is disconnected from the system so that the fluid may be taken to a laboratory for analysis. Most present collection systems have used plastic, disposable containers as fluidtraps in order to reduce the cost of such systems.
A serious problem is created by presently available specimen traps because of the high possibility of contamination of the fluid collected within the trap while the trap is being disconnected from the system and transported or stored prior to analysis. An attempt has been made at reducing the possibility of contamination by providing a container having a friction-fit top cover fitted with two lengths of tubing for suction and fluid connections. The tubing may be adapted to bronchoscope suction instruments or suction catheters and connected to the vacuum source, respectively. After the specimen is collected, the specimen trap may be closed by joining together the two connecting tubes. Even'this type of trap still has the serious disadvantage that the tubing must be connected together to transport the specimen and therefore, the trap, while being disconnected from the system, is subject to possible contamination of its interior. Contamination may also be created by interlocking the tubing during storage. Thus, there is no presently available device which completely isolates the interior of the specimen trap from all'possible contamination before, during, and after collection of the-specimen.
- DESCRIPTION'OF THE INVENTION The present invention provides a sterile disposable specimen trap having a unique closure means which may be moved to open the interior of the container forming the trap into communication with the conduit means carrying fluid from the patient and the vacuum connection to the system without any possible adverse effect on the sterility of the specimen.
The specimen trap of this invention overcomes the disadvantages of the prior art by a generally cylindrical container means closed at its bottom end and open at its top end but having a closure means securely mounted on it over its top end. This closure means is formed of two independent cover members, at least one of which is angularly movable relative to the other about a central axis common to both. Each member has a pair of openings formed in it which may be aligned by movement of one of the members a certain angular distance about their central axis to allow the interior of the container to communicate, through these openings, with both the fluid conduit and the suction conduit.
The second independent cover member includes a generally annular disc having a downwardly extending boss at its center, which is mounted on a first independent cover member for relative movement with respect thereto. The first cover member is also preferably annular in configuration, havinga downwardly extending flange disposed about its periphery so that it may be mountedvover the upper edges of the top open end of the container.
The above specimen trap assembly ispreferably-fit into a specimen collection system having-an adapter cap similar in configuration to the second cover member, that is, having a downwardly extending peripheral flange disposed about a generally annular body portion, and carrying a fluid conduit and a suction conduit which open therethrough. This adapter cap is mounted over the closure means by inserting an inwardly protruding engaging element into bayonet-shaped slotsformed on the exterior surface-of the first cover member, thereby locking the adapter'cap to the first cover memberand the container. The adapter cap also has means disposed on its interior surface to engage the second cover member, which is sandwiched between the adapter cap and the first cover member. The second cover member will thereby be maintained in a sta tionary position relative to the adapter cap in which the openings. formed in the second cover member are aligned with the open ends of the fluid conduit and the suction conduit carried by the adapter cap.
This unique construction allows the container and firstcover member, and the adapter cap and second cover member to be moved angularly relative to one another since the interior engaging means formed on the adapter cap will be moved along and within the slots formed in'the first cover member. When the em gaging means are moved to the end of the slots, the openings formed in the first cover member will be automatically and properly aligned withthe corresponding openings in the first cover member and the adapter cap. When the vacuum is initiated,-therefore, suction will be established throughout the system and fluid specimens may be drawn from the patient through the fluid conduit means into-the specimen trap.
Alternately, when a sufficient specimen has been collected, the container and first cover member, and the adapter cap and second cover member may be moved relatively in an opposite direction, the engaging means moving within the bayonet slot, until the openings are brought back to their original, misaligned positions,
thereby positively sealing the interior of the specimen trap and its contents.
The present invention, therefore, overcomes the possibility of contamination of the specimen collected in the container, since the interior of the container is never opened to any external sources of contamination.
Accordingly, it is an object of this invention to provide 'an automatically sterile specimen trap which is simple and inexpensive in construction, yet completely eliminates the possibility of contamination of the fluid specimens collected in the trap.
It is a further object of this invention to provide a sterile specimen trap which may be operated within a specimen collection system in an automatic and sterile manner.
It is another object of this invention to provide an automatically sterile specimentrap having closure means movable to effectively close and seal the interior of the specimen trap from contamination and, alternately, to open the interior of the trap to fluid and suction conduits in a'specimen collection system.
It is one more object of this invention to provide an automatically sterile specimen trap which is particularly adapted for'use in connection with a fluid specimen conduit means and a suction conduit means carried by an adapter cap to form a system'for aspirating fluid from bodily cavities.
These and other important objects of the present invention will become evident from the following detailed description of the invention taken in conjunction with the drawings wherein; 1
FIG. 1 is a perspective view of the collection portion of a system for aspirating fluid from a patient, including the sterile specimen trap of the present invention;
FIG. 2 is an exploded fragmentary view of the fluid collection system shown in FIG. 1, illustrating the top portion of the specimen trap, the members forming the closure means andthe adapter cap which carries the fluid and suction conduits;
FIG. 3 is an enlarged cross sectional view of the specimen trap of this invention taken generally along the central axis of the specimen trap of the presentinvention showing the construction of the closure means and its relationship to the container and adapter cap; and,
FIG. 4 is a top plan view of the specimen'trap of this invention taken generally along line 3-3 in FIG. 3
, showing, in hidden lines, the openings formed in the members of the closure means and the relative angular movement of these members.
Referring now to the drawings, and, in particular, to FIG. 1, the sterile specimen trap assembly of .the present invention is shown generally at 10. This specimen trap assembly includes a generally cylindrical container or trap 12 which is preferably closed at its bottom end and open at its top end, as shown in FIG. 2. A closure means 14 whose elements are shown in FIGS. 2 and 3, and which will be discussed in detail below, is mounted over the open top end of the container 12. The closure means 14, in turn, has an adapter or fitting cap 16 mounted over it. This adapter cap 16 carries the proximal ends of a fluid specimen conduit 18 and a suction conduit 20. Both the fluid conduit 18 and the suction conduit 20 may be formed of commonly used, clear or opaque plastic tubing and may be, in turn, fitted at their distal ends, to a conventional flexible catheter or a bronchoscope attachment (not shown) and tubing leading to the source of vacuum (not shown),
respectively. This fitting may be accomplished by suitable means such as the frusto-conical fitting adapter 24 shown in FIG. 1. The suction conduit 20 may also have a suction valve 22 disposed in it to control the suction in the system.
Closure means 14 includes a first cover member 30 and a second cover member 32. First cover member 30 is preferably formed'having an annular body portion 31, a downwardly extending peripheral flange portion 34 and an upwardly extending peripheral flange 35. First cover member 30 is mounted directly over the open top cnd of container 12 by means of interior ribs 36 shown in FIG. 4 which are received securely within corresponding exterior mounting grooves 48 disposed about the outer surface of container 12. When ribs 36 are slid into grooves 48, first cover member 30 will be held in a substantially stationary position relative to container 12. The tight fit between flange 34 and container 12 will prevent any leakage into or out of container l2.
means preferred in thisinvention, however,-includea pair of circular lips 58 which extend downwardly from the open ends 56 of conduit means '18 and 20, respectively, and are inwardly tapered or frusto-conical in configuration and of a dimension such that they may be inserted into the similarly shaped frusto-conical openings 42 formed in second cover member 32.
The adapter cap 16 is placed over closure means 14 and container 12 with relative angular positions of the interior protrusions 52 and the engaging lips 56 being such that a protrusion 52 enters the upward leg 38a of each slot 38, and lips 58 enter the correspondingly spaced and formed openings 42 in second cover member 32. With the lips58 inserted into openings 42 as shown in FIG. 3, first cover member 30 will be angularly movable relative to adapter cap 16 and second cover member 32 by virtue-of the shape of bayonet slots 38.
1n the above manner, the adapter cap 16 and second cover member 32, which is held stationary relative to this adapter cap by the lips 58 engaging openings 42, may be unitarily and angularly movedabout central axis 28 relative to first cover member-30, which is held in an angularly immovable position relative to container 12, until openings 42 and 40 are aligned and the openings 56 of conduits l8 and are communicated to the interior of the container 12. This relative movement ab out central. axis 28 may be accomplished by theoperator eitherholding the container 12 stationary with one hand while twisting the adapter cap 16 to move the protrusions 52 withinleg 38b of slots 38, or, alternatively, holdingtheadapter cap stationary while twisting the container 12 and first cover member 30 in an oppositedirection.
If suction is now communicated to the system by opening valve 22, it will act to withdraw fluid through fluid'conduit 18, through a rigid fluid conduit extension 60 which extends donwardly from oneopening 40 in first cover member 30 and into the interior of container 12. When a desired amount-of fluid specimen has been collected, the adapter cap 16 and second cover member 32 and, the first cover member 30 and container 12 may be moved angularly relative to one another, in a manner opposite that previously used, to misalign the openings of their original condition and close the interior of the container.
and. seal 6 By use of this specimen trap assembly, the interior of the container is never opened to the atmosphere, or other possible sources of contamination, from the mo ment of its manufacture until it is opened in a laboratory by sliding first cover member 30 off the container 12 to gain access to the fluid specimen. The closure means 14 is originally disposed on the container during.
manufacture with the openings 42 and 40 in misaligned position and the container 12 and closure means 14 are removed from the adapter cap 16 after the specimen has been collected with the openings once again in misaligned position.
The second 'cover member 32 is mounted on first cover member 30 by virtue .of the boss 44 which is of such a dimension that the cover members are not freely movable relative to one another without the use of some force to overcome the friction between them. This prevents accidental alignment of the openings.
It is clear that the unique closure means 14 which prevents contamination of the interior of the container 12 is operable bymeans other than an adapter cap 16. For example, the conduits 18 and 24 might be snapfitted into openings 42 and second cover member 32 held stationary while first cover member 30 and container 12 are moved. However, for reasons of sterility, a fitting carrying conduit, such as adapter cap 16,- is preferred. It is further clear that cover members 30 and 32 need not be. of annular configuration so long as they are rotatable about the same axis to assure alignment of the openings in each.
The materials suitable for manufacture of the specimen trap assembly of this invention include materials conventionally used in this type of medical and surgical made without departing from the principles of the invention.
I claim: I a 1. A sterile specimen trap particularly adaptedfor .use in obtaining a fluid specimen and maintaining said sterile condition for laboratory analysis specimenin a comprising: I container means open at one end to receive said'fluid specimen, and closure means mounted over said openend of said container means to close and seal the interior of said container means and prevent contamination of said interior of said container means, said closure means including a first annular cover member and a second annular cover member, said secondcover member being mounted on said first cover member, said second cover member and said first cover member being angularly movable-relative to one another about a concentric central axis, each of saidcover members having a pair of correspondingly spaced openings formed in them to communicate the interior of said container means with'fluid specimen conduit means and suc tion conduit means, respectively, when said open v ings are aligned, said second cover member being held in a stationary position relative to said specimen conduit means and said suction conduit means by cover retaining means, said cover retaining said suction conduit means mounted thereon and opening therethrough, said. adapter capmeans being mounted on said first cover member in such a manner that said second cover member is'sandwiched between said adapter cap and said first cover member and said open end portions of said fluid conduit means and said suction conduit means are aligned with said openings formed in said second cover member, a portion of said second cover member engaging said adapter cap to prevent movement of said second cover member relative to said adapter cap, said first cover membet and said second cover member thereby being angularly movable relative to one another to align the openings formed in said first cover member with the openings formed in said second cover member to communicate said fluid conduit means and said suctionconduit means to the interior of said container means to trap the fluid specimen therein, said first'cover member and said second cover member being alternately movable in an opposite manner-relative to one another, after a desired amount of the fluid specimen has been trapped in said container means, to "close said openings andeliminate communication to the interior of said container means to preserve the sterility of .the specimen trapped in said container means.
2. The specimen trap set forth in claim 1 wherein said adapter. cap is a generally cup-shaped capinverted for mounting over said first cover member, said second cover member and said container means, and having a downwardly extending flange portion integrally fomied with and disposed about the periphery of a disc-shaped body portion, said adapter cap having inner engaging means disposed on the interior surface of said downwardly extending flange portion to engage corresponding outer engaging means disposed about the exterior surface of a similarly shaped downwardly extending pe; ripheral flange integrally formed on said first cover member and engaging said container means on its inte- 4. In a system for obtaining respiratory, gastric and other fluids from a patient-for laboratory analysis, including fluid conduit means in communication at one end thereof with the patient, vacuum means to establish suction in the system to withdraw the fluid from the patient, and suction conduit means in communication at one-end thereof with said vacuum-means, the improvement comprising a specimen trap in communication with the patient through an opposite end of said fluid'conduit means and in communication with said vacuum means through an opposite endof said suction conduit means to receive and contain, in a sterile condition, fluid withdrawn from the patient through the fluid conduit means, including container means open at one end to receive said fluid, closure means mounted over said open end of said container means to close and seal the interior of said container means from'contamination, said closure means having at least two i ndependently formed members, each of said members having correspondingly spaced openings formed therethrough, at least one of said members being angularly movable about a centralaxis of said closure means relative to the other member, and adapter means having said open therethrough, said adapter means being 'mounted on rior surface, said inner engagingmeans and said outer V engaging means cooperating to 'prevent relative axial movement of said'adapte'r'cap and said first'cover member while allowing relative angular movement of said adapter cap and said first cover member to permit alignment and, alternately, closure of the openings formed in said first cover member and said second cover member.
3. The sterile specimen trap set forth in claim 2 wherein said inner engaging means includes a plurality of inwardly extending protrusions formed on the interior surface of said downwardly extending flange por-' tion of said adapter cap, and said outer engaging means includes a plurality of generally L-shaped slots formed 1 on the exterior surface of a downwardly extending portion of said first cover member, said protrusions being received in said slots to mount said adapter cap on said first cover member and said container means, and
being movable within said slots to allow said first coveropposite ends of said fluid conduit means and said suction conduit means mounted thereon and opening said closure means and engaging at least one member of said closure'means to allow relative angular movement of said members of said closure means such that said openings formed in said members may be aligned with one another and with said open, opposite ends of said fluid conduit means and said suction conduit means to provide access to the interior of said container means and establish suction .i n the system for withdrawing fluid into said container means, and, alternatelyQso that said openings may be misaligned with one another to close the interior of said container means and maintain the fluid trapped in said container means in asterile condition. s
5. The improvement set forth in claim 4 whereinsaid closure means includes a first annular cover member and a second annular cover member, each of said cover members having a pair of correspondingly spaced openings formed in them to communicate the interior of said container means with said fluid conduit means and said suction conduit means, respectively, said second cover member being mounted on said first cover member, said first cover member and said second cover member being angularly movable relative to one another about said central axis of said closure means when said second cover member is engaged by said adapter means. i
6. The improvement set forth in claim 5 wherein said adapter means is anadapter cap mounted on said first cover member over said second cover member in such a manner that said second cover. member is sandwiched between said adapter cap and said first cover member and said opposite open ends of said fluid conduit means member, and said adapter cap and said secondcover member engagingly held stationary by said adapter cap, to be moved relative to one another to align the openings in said first and second cover members," and establish communication to the interior of said container means, and, alternately, to misalign and close said openings.
and said suction conduit means carried by said adapter cap are aligned with said corresponding openings formed in said second cover means, a portion of said second cover means engaging said adapter cap to prevent movement of said second cover means relative to said adapter cap, said first cover member-and said second cover member being thereby angularly movable relative to one another a certain angular distance about said central axis of said closure means. to align said openings in said first cover member with the correspondingly-spaced openings formed in said second cover member to communicate said fluid conduit means and said suction conduit means to establish suction in the system and withdraw fluid from the patient, said first and second cover members being alternately movable, after a desired amount of fluid has been trapped in said container means in an opposite manner relative to one another to close said openings and preserve the sterility of said specimen.
7. The improvement set forth in claim 6 wherein said adapter cap is a generally cup-shaped cap inverted for mounting over said first cover member, said second cover member and said container means, and having a downwardly extending flange portion integrally formed movement of said adapter cap and said first cover member while allowing relative angular movement of said adapter cap and said first cover member to permit alignment, and, alternately, closure of the openings formed in said first cover member and said second cover member.
8. The improvement set forth in claim 7 wherein said inner engaging means includes a plurality of inwardly extending protrusions formed on the interior surface of said downwardly extending flange portion of said adapter cap, and said outer engaging means includes a plurality of generally L-shaped slots formed on the exterior surface of said downwardly extending portion of said first cover means, said protrusions being received misalign and close said openings.
Claims (8)
1. A sterile specimen trap particularly adapted for use in obtaining a fluid specimen and maintaining said specimen in a sterile condition for laboratory analysis comprising: container means open at one end to receive said fluid specimen, and closure means mounted over said open end of said container means to close and seal the interior of said container means and prevent contamination of said interior of said container means, said closure means including a first annular cover member and a second annular cover member, said second cover member being mounted on said first cover member, said second cover member and said first cover member being angularly movable relative to one another about a concentric central axis, each of said cover members having a pair of correspondingly spaced openings formed in them to communicate the interior of said container means with fluid specimen conduit means and suction conduit means, respectively, when said openings are aligned, said second cover member being held in a stationary position relative to said specimen conduit means and said suction conduit means by cover retaining means, said cover retaining means comprising an adapter cap having open end portions of said fluid specimen conduit means and said suction conduit means mounted thereon and opening therethrough, said adapter cap means being mounted on said first cover member in such a manner that said second cover member is sandwiched between said adapter cap and said first cover member and said open end portions of said fluid conduit means and said suction conduit means are aligned with said openings formed in said second cover member, a portion of said second cover member engaging said adapter cap to prevent movement of said second cover member relative to said adapter cap, said first cover member and said second cover member thereby being angularly movable relative to one another to align the openings formed in said first cover member with the openings formed in said second cover member to communicate said fluid conduit means and said suction conduit means to the interior of said container means to trap the fluid specimen therein, said first cover member and said second cover member being alternately movable in an opposite manner relative to one another, after a desired amount of the fluid specimen has been trapped in said container means, to close said openings and eliminate communication to the interior of said container means to preserve the sterility of the specimen trapped in said container means.
2. The specimen trap set forth in claim 1 wherein said adapter cap is a generally cup-shaped cap inverted for mounting over said first cover member, said second cover member and said container means, and having a downwardly extending flange portion integrally formed with and disposed about the periphery of a disc-shaped body portion, said adapter cap having inner engaging means disposed on the interior surface of said downwardly extending flange portion to engage corresponding outer engaging means disposed about the exterior surface of a similarly-shaped downwardly extending peripheral flange integrally formed on said first cover member and engaging said container means on its interior surface, said inner engaging means and said outer engaging means cooperating to prevent relative axial movement of said adapter cap and said first cover member while allowing relative angular movement of said adapter cap and said first cover member to permit alignment and, alternately, closure of the openings formed in said first cover member and said second cover member.
3. The sterile specimen trap set forth in claim 2 wherein said inner engaging means inclUdes a plurality of inwardly extending protrusions formed on the interior surface of said downwardly extending flange portion of said adapter cap, and said outer engaging means includes a plurality of generally L-shaped slots formed on the exterior surface of a downwardly extending portion of said first cover member, said protrusions being received in said slots to mount said adapter cap on said first cover member and said container means, and being movable within said slots to allow said first cover member, and said adapter cap and said second cover member engagingly held stationary by said adapter cap, to be moved relative to one another to align the openings in said first and second cover members, and establish communication to the interior of said container means, and, alternately, to misalign and close said openings.
4. In a system for obtaining respiratory, gastric and other fluids from a patient for laboratory analysis, including fluid conduit means in communication at one end thereof with the patient, vacuum means to establish suction in the system to withdraw the fluid from the patient, and suction conduit means in communication at one end thereof with said vacuum means, the improvement comprising a specimen trap in communication with the patient through an opposite end of said fluid conduit means and in communication with said vacuum means through an opposite end of said suction conduit means to receive and contain, in a sterile condition, fluid withdrawn from the patient through the fluid conduit means, including container means open at one end to receive said fluid, closure means mounted over said open end of said container means to close and seal the interior of said container means from contamination, said closure means having at least two independently formed members, each of said members having correspondingly spaced openings formed therethrough, at least one of said members being angularly movable about a central axis of said closure means relative to the other member, and adapter means having said open opposite ends of said fluid conduit means and said suction conduit means mounted thereon and opening therethrough, said adapter means being mounted on said closure means and engaging at least one member of said closure means to allow relative angular movement of said members of said closure means such that said openings formed in said members may be aligned with one another and with said open, opposite ends of said fluid conduit means and said suction conduit means to provide access to the interior of said container means and establish suction in the system for withdrawing fluid into said container means, and, alternately, so that said openings may be misaligned with one another to close the interior of said container means and maintain the fluid trapped in said container means in a sterile condition.
5. The improvement set forth in claim 4 wherein said closure means includes a first annular cover member and a second annular cover member, each of said cover members having a pair of correspondingly spaced openings formed in them to communicate the interior of said container means with said fluid conduit means and said suction conduit means, respectively, said second cover member being mounted on said first cover member, said first cover member and said second cover member being angularly movable relative to one another about said central axis of said closure means when said second cover member is engaged by said adapter means.
6. The improvement set forth in claim 5 wherein said adapter means is an adapter cap mounted on said first cover member over said second cover member in such a manner that said second cover member is sandwiched between said adapter cap and said first cover member and said opposite open ends of said fluid conduit means and said suction conduit means carried by said adapter cap are aligned with said corresponding openings formed in said second cover means, a portion of said second cover means engaging said adapter cap to Prevent movement of said second cover means relative to said adapter cap, said first cover member and said second cover member being thereby angularly movable relative to one another a certain angular distance about said central axis of said closure means to align said openings in said first cover member with the correspondingly-spaced openings formed in said second cover member to communicate said fluid conduit means and said suction conduit means to establish suction in the system and withdraw fluid from the patient, said first and second cover members being alternately movable, after a desired amount of fluid has been trapped in said container means in an opposite manner relative to one another to close said openings and preserve the sterility of said specimen.
7. The improvement set forth in claim 6 wherein said adapter cap is a generally cup-shaped cap inverted for mounting over said first cover member, said second cover member and said container means, and having a downwardly extending flange portion integrally formed with and disposed about the periphery of a disc-shaped body portion, said adapter cap having inner engaging means disposed on the interior surface of said downwardly extending flange portion to engage corresponding outer engaging means disposed about the exterior surface of a similarly shaped downwardly extending peripheral flange integrally formed on said first cover member and engaging said container means on its interior surface, said inner engaging means and said outer engaging means cooperating to prevent relative axial movement of said adapter cap and said first cover member while allowing relative angular movement of said adapter cap and said first cover member to permit alignment, and, alternately, closure of the openings formed in said first cover member and said second cover member.
8. The improvement set forth in claim 7 wherein said inner engaging means includes a plurality of inwardly extending protrusions formed on the interior surface of said downwardly extending flange portion of said adapter cap, and said outer engaging means includes a plurality of generally L-shaped slots formed on the exterior surface of said downwardly extending portion of said first cover means, said protrusions being received in said slots to mount said adapter cap on said first cover member and said container means, and being movable within said slots to allow said first cover member and said second cover member engagingly held by said adapter cap to be angularly moved relative to one another about said central axis of said closure means to align said openings and establish communication to the interior of said container means, and, alternately, to misalign and close said openings.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US00378349A US3855997A (en) | 1973-07-11 | 1973-07-11 | Sterile specimen trap |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US00378349A US3855997A (en) | 1973-07-11 | 1973-07-11 | Sterile specimen trap |
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US3855997A true US3855997A (en) | 1974-12-24 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US00378349A Expired - Lifetime US3855997A (en) | 1973-07-11 | 1973-07-11 | Sterile specimen trap |
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US3998227A (en) * | 1974-09-13 | 1976-12-21 | Medical Development Corporation | Regulator structure and system |
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