WO2005110225A1 - ランセットアッセンブリ - Google Patents
ランセットアッセンブリ Download PDFInfo
- Publication number
- WO2005110225A1 WO2005110225A1 PCT/JP2005/008899 JP2005008899W WO2005110225A1 WO 2005110225 A1 WO2005110225 A1 WO 2005110225A1 JP 2005008899 W JP2005008899 W JP 2005008899W WO 2005110225 A1 WO2005110225 A1 WO 2005110225A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lancet
- cover
- holder
- assembly according
- connector
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
- A61B5/15142—Devices intended for single use, i.e. disposable
- A61B5/15144—Devices intended for single use, i.e. disposable comprising driving means, e.g. a spring, for retracting the piercing unit into the housing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150015—Source of blood
- A61B5/150022—Source of blood for capillary blood or interstitial fluid
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150412—Pointed piercing elements, e.g. needles, lancets for piercing the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150503—Single-ended needles
- A61B5/150519—Details of construction of hub, i.e. element used to attach the single-ended needle to a piercing device or sampling device
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/150541—Breakable protectors, e.g. caps, shields or sleeves, i.e. protectors separated destructively, e.g. by breaking a connecting area
- A61B5/150564—Protectors removed by pulling or pushing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/15058—Joining techniques used for protective means
- A61B5/150618—Integrally moulded protectors, e.g. protectors simultaneously moulded together with a further component, e.g. a hub, of the piercing element
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/150694—Procedure for removing protection means at the time of piercing
- A61B5/150725—Procedure for removing protection means at the time of piercing removal procedure linked to further actions, e.g. cocking of the piercing device, which indicate that the piercing device is used or tempered
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150801—Means for facilitating use, e.g. by people with impaired vision; means for indicating when used correctly or incorrectly; means for alarming
- A61B5/150816—Means for facilitating use, e.g. by people with impaired vision; means for indicating when used correctly or incorrectly; means for alarming by tactile feedback, e.g. vibration
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150885—Preventing re-use
- A61B5/150916—Preventing re-use by blocking components, e.g. piston, driving device or fluid passageway
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
- A61B5/15101—Details
- A61B5/15103—Piercing procedure
- A61B5/15107—Piercing being assisted by a triggering mechanism
- A61B5/15113—Manually triggered, i.e. the triggering requires a deliberate action by the user such as pressing a drive button
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
- A61B5/15101—Details
- A61B5/15115—Driving means for propelling the piercing element to pierce the skin, e.g. comprising mechanisms based on shape memory alloys, magnetism, solenoids, piezoelectric effect, biased elements, resilient elements, vacuum or compressed fluids
- A61B5/15117—Driving means for propelling the piercing element to pierce the skin, e.g. comprising mechanisms based on shape memory alloys, magnetism, solenoids, piezoelectric effect, biased elements, resilient elements, vacuum or compressed fluids comprising biased elements, resilient elements or a spring, e.g. a helical spring, leaf spring, or elastic strap
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
- A61B5/15101—Details
- A61B5/15126—Means for controlling the lancing movement, e.g. 2D- or 3D-shaped elements, tooth-shaped elements or sliding guides
- A61B5/1513—Means for controlling the lancing movement, e.g. 2D- or 3D-shaped elements, tooth-shaped elements or sliding guides comprising linear sliding guides
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/150694—Procedure for removing protection means at the time of piercing
- A61B5/150702—Procedure for removing protection means at the time of piercing fully automatically removed, i.e. the removing does not require any action by the user
Definitions
- the present invention generally relates to a vice) or a lancet assembly, which is used when a small amount of blood is collected by damaging the skin, and in particular, a disposable type which is easy to use. Lancet assembly.
- Various finger-pricking devices or lancet assemblies are marketed for hospitals, clinics, and practitioners who are the only ones for individual users, and are used to collect small amounts of blood.
- Such devices have a sharp-pointed or piercing element (e.g., a needle) that is used to quickly pierce the patient's skin or penetrate the skin to form a wound and drain a small amount of blood.
- a sharp-pointed or piercing element e.g., a needle
- Patent Document 1 International Publication W096- 16599
- an object of the present invention is to provide a new lancet assembly that can solve the above-mentioned problems of the prior art, that is, a lancet assembly that does not require removal of a resin cover. It is.
- the lancet cover and the lancet body surrounding the distal end of the puncture element are separated from each other.
- the above problem is solved by making the lancet cover a lancet assembly having a configuration that automatically removes the puncturing element force by applying a force that attempts to move the lancet cover or the lancet cover away from the lancet body. Found to be.
- the present invention provides:
- a lancet assembly including a lancet structure and a lancet holder holding the lancet structure, wherein the assembly includes:
- the lancet structure is composed of an ejector and a lancet
- the ejector comprises an arm, a spring, and a base to which the arm and the spring are attached, the spring having a connector at its front end, and a rear end connected to the base,
- the lancet comprises a lancet body, a lancet cover and a piercing element, wherein the piercing element is located across the lancet body and the lancet cover, the tip of the piercing element is surrounded by the lancet cover,
- the lancet body is connected to the connector,
- the lancet holder has an opening at the front end through which the tip of the piercing element passes, and when the lancet structure is inserted into the lancet holder and the base is moved relative to the connector to compress the spring, The lancet cover is separated and surrounded by the puncturing element force, and the tip of the puncturing element is exposed.
- the lancet cover is located in front of the arm,
- the lancet cover and the lancet body are integrally connected by the weakened portion, and the connector is connected to the lancet body,
- the lancet cover and lancet body separate at the weakened part . After the separation, the lancet cover is moved away from the lancet body to expose the tip of the puncture element surrounded by the lancet cover.
- the lancet cover is located in front of the arm,
- the lancet cover and the lancet body exist as independent members, respectively, and are integrally connected via a puncture element,
- the connector is connected to the lancet body,
- the lancet cover While keeping the front end of the arm in contact with the rear side of the lancet cover, When the spring is compressed by moving relative to the connector, the lancet cover also reduces the lancet body force. Thereafter, the lancet cover is separated from the lancet body by the puncturing element force further away from the lancet body force, and finally the puncturing element force is separated, whereby the tip of the puncturing element surrounded by the lancet cover is exposed.
- the front end of the arm engages with the lancet cover.
- the contact state with the arm is held by the arm.
- the front end of the arm has a hook-shaped portion (or an L-shaped portion) bent inward, and the lancet cover has a side portion that engages with the hook-shaped portion. In this way, the lancet cover remote from the puncture element can be restrained by the arm.
- the lancet holder has guide means on a side inner wall at a front end thereof,
- the lancet cover has guided means guided by the guiding means
- the separated lancet cover moves forward by the arm that moves forward, so that the lancet cover moves forward (for example, obliquely upward or downward).
- the lancet holder has, as a guide means, a slide portion extending obliquely forward on a side inner wall at a front end thereof.
- the lancet cover has a portion that slides on the slide portion (for example, a protruding portion) as guided means.
- the lancet cover has a tapered portion tapering forward as a slidable portion on the side of the front end thereof, and the lancet holder has a tapered portion on which the tapered portion slides. Slide the taper (ie reverse taper) to the side of the inner wall at the front end As a result, these tapered portions slide with each other, so that the separated lancet cover moves forward and diagonally!
- the sliding portion is a convex portion or a concave portion provided on a side inner wall at a front end portion of the lancet holder and having a sliding surface extending obliquely forward
- the slidable portion is a lancet holder.
- the protrusion may be provided on the side of the cover.
- the base, arm, spring and connector of the ejector 1 are preferably formed integrally with resin, preferably formed integrally by injection molding of resin.
- the lancet body and the lancet cover are formed as a lancet by inserting a puncturing element (or a piercing element, usually a needle of stainless steel) and integrally molding resin, preferably by injection molding. Is preferred. It is particularly preferred that the lancet body and the lancet cover are connected by a notch, which functions as a weakened part.
- the lancet body and the lancet cover may be formed as separate members, and the piercing element may be included therein.
- the lancet body and the lancet force bar may be spaced apart, between which the intermediate part of the piercing element may be exposed.
- the ejector and the lancet are separate members, and these are integrally connected by a connector.
- the ejector and the lancet may be integrally formed as a single member, for example, by injection molding, such that the lancet is originally integrated.
- the resin constituting the ejector, lancet and lancet holder is preferably one that can be used for injection molding.
- polymer materials such as POM (polyacetal resin), PBT (polybutylene terephthalate resin), polyester copolymer resin, ABS resin, polycarbonate resin, polystyrene resin, polyethylene resin, Examples include polypropylene resin.
- the lancet holder further has a trigger for firing the lancet body with the tip of the puncture element exposed after the lancet cover is separated, and the connector further has a protruding portion. Consisting of When the lancet structure is inserted into the lancet holder, the protrusion of the connector abuts the protrusion located adjacent to the front of the trigger, and this abutment condition prevents the connector from moving further forward. As a result, the spring is compressed. The trigger is to release such contact state.
- a protrusion may be provided on the spring, particularly near its front end, or on the lancet body, especially near its rear end.
- the term “before (or after)” is used with reference to the direction in which the piercing element moves for puncturing.
- up (or down) refers to the plane defined by each arm (i.e., assuming that they are substantially straight, extending in the direction of their extension, such a straight line).
- the direction in which the lancet cover moves obliquely with respect to the plane including the moving direction of the puncturing element is referred to as “up” for convenience and the term “down” for the opposite direction (see FIG. 1).
- a direction perpendicular to both the front-rear direction and the vertical direction, and a direction that forms a rectangular coordinate system together with these directions is also referred to as a left-right direction.
- the lancet assembly of the present invention is preferably supplied in a state where the above-described or later-described lancet structure and the lancet holder are combined in any suitable form.
- the lancet of the lancet structure is completely inserted into the lancet holder, and the lancet is assembled so that the protrusion of the connector comes into contact with the trigger (however, the spring is not compressed). .
- the lancet holder cannot pull out the lancet structure.
- the lancet structure and the lancet holder are not combined, in which case, rather than a lancet assembly, a lancet assembly kit comprising the lancet structure and the lancet holder.
- a lancet assembly kit comprising the lancet structure and the lancet holder.
- the present invention provides a lancet holder and a lancet structure constituting the lancet assembly of the present invention described above or below.
- the present invention further provides a lancet and an ejector for forming such a lancet structure.
- the description regarding the lancet assembly of the present invention described above and below applies similarly.
- the lancet cover when the lancet structure is inserted into the lancet holder and the lancet preparation is completed, the lancet cover also separates the lancet body force and the tip of the enclosed puncture element Since the part is automatically exposed in the holder, the operation of removing the lancet cover corresponding to the resin cover, which was necessary in the conventional lancet assembly, is omitted.
- FIG. 1 is a schematic perspective view showing a state before a lancet structure is inserted into a lancet holder in the lancet assembly of the present invention.
- FIG. 2 is a schematic perspective view showing the lancet structure in FIG.
- FIG. 3 is a schematic perspective view showing a state in which a lancet structure is inserted into a lancet holder and a forward movement of a lancet body is restricted in the lancet assembly of the present invention.
- FIG. 4 is a schematic perspective view showing a state where the lancet cover and the lancet body force are separated by further inserting the lancet structure into the lancet assembly of the present invention by further inserting the lancet structure.
- FIG. 5 is a perspective view of the lancet assembly of the present invention, in which the lancet cover is moved forward and obliquely upward by the insertion of the lancet structure further into the state force of FIG. Is shown in a schematic perspective view.
- FIG. 6 is a perspective view of the lancet assembly according to the present invention, in which the state of the lancet body in FIG. 5 is released and the tip of the puncturing element is opened at the front end of the lancet holder.
- the force projecting state is shown in a schematic perspective view.
- FIG. 7 shows a lancet assembly according to the present invention, in which the spring returns to the original shape from the state of FIG. 6, and the distal end of the puncturing element is pulled in from the opening at the front end of the lancet holder. This state is shown in a schematic perspective view.
- FIG. 8 schematically shows a lancet and an ejector constituting a lancet structure in an exploded state.
- FIG. 9 is a schematic cross-sectional view along the line XX in the state of FIG. 3.
- FIG. 10 shows a schematic cross-sectional view of the state of FIG. 4, as in FIG.
- FIG. 11 shows a schematic cross-sectional view of the state of FIG. 5, as in FIG.
- FIG. 12 shows a schematic cross-sectional view of the state of FIG. 6, as in FIG.
- FIG. 13 shows a schematic cross-sectional view of the state of FIG. 7, as in FIG.
- FIG. 14 is a schematic perspective view similar to FIG. 3, showing another mode of moving the lancet cover diagonally forward.
- FIG. 15 is a schematic perspective view similar to FIG. 3, showing still another mode of moving the lancet cover diagonally forward.
- 252 base end
- 254 inclined surface
- 256 front
- 260, 262 projection
- FIG. 1 shows a schematic perspective view of the lancet assembly 10 of the present invention.
- the lancet assembly 10 includes a lancet holder 100 and a lancet structure 200.
- the illustrated embodiment shows a state immediately before the lancet structure 200 is inserted into the interior space of the lancet holder 100 in the direction indicated by the arrow.
- FIG. 1 also shows the directions of the terms “front”, “rear”, “up” and “down” (based on a rectangular coordinate system) used in this specification.
- the lancet holder 100 has an opening 104 at a rear end 102 and an opening 108 (not visible in FIG. 1) at a front end 106.
- a portion to be punctured for example, a fingertip
- the lancet holder 100 has a trigger 110 on its upper surface.
- the rear end 112 of the trigger 110 is integrated with the body of the lancet holder 100, and the front end 114 can be pushed into the lancet holder (downward in FIG. 1) (see FIG. 1). Release the pushing force to return to the original shape.)
- the lancet holder 100 has a protrusion 116 (not visible in FIG.
- FIG. 2 schematically shows a perspective view of the lancet structure 200 shown in FIG. 1 in a state where the lancet structure is turned upside down (that is, in a state where the lancet structure is turned upside down).
- the lancet structure 200 includes an ejector 202 and a lancet 204.
- the ejector 202 has a base 206 and arms 208 attached to both sides thereof.
- a spring is preferably present between a pair of arms, but the number of arms may be one or three or more.
- a spring 210 is located between these arms, one end of which is attached to the base 206.
- a connector 212 is attached to the other end of the spring 210.
- the base 206, the arm 208, the spring 210 and the connector 212 are preferably integrally formed. For example, injection molding of resin Can be formed.
- the lancet 204 includes a lancet body 216 and a lancet cover 214, which are connected by a weakened portion 218 as a notch (a V-shaped recess).
- the lancet 204 further comprises a piercing element 220, the distal end of which is surrounded by a lancet cover 214.
- the rear of the piercing element 220 resides in the lancet body 216.
- a partial force of the piercing element 220 is exposed between the lancet body 216 and the lancet cover 214.
- the lancet body and the lancet cover may be separated as independent members without the weakened portion.
- the lancet cover 214 is located in front of the arm 208, and the front end 222 of the arm 208 is in contact with the rear side 224 of the lancet cover 214 in the illustrated embodiment.
- the lancet body 216 may be in a state where the lancet body 216 is close to the lancet body without contact (that is, without contact). Moving the arm 208 further forward causes the front end 222 of the arm 208 to abut the rear side 224 of the lancet cover 214.
- a state where the lancet structure 200 is inserted into the lancet holder 100 is schematically shown in a perspective view in FIG.
- the lancet structure 200 is inserted in the state force of FIG. 1 as well, the protrusion 226 of the lancet body 216 comes into contact with the protrusion 116 provided on the upper inner wall in front of the trigger 110 of the lancet holder 100.
- a tapered protruding portion 228 having a width extending in the left-right direction is provided on the side of the inner wall of the lancet holder, and in the process of inserting the lancet structure 200, each arm 208 A reversely tapered (ie, tapered) protrusion 230 provided along the way allows the protrusion 230 to advance over the protrusion 228.
- protrusion 228 is positioned such that protrusion 226 abuts protrusion 116 when protrusion 230 rides over it.
- FIG. 4 shows a state in which a force is applied to the base 206 so as to push the lancet structure 200 forward in order to insert the lancet structure 200 further.
- the spring 210 is compressible, so that the base 206 has moved forward and the arm 208 has also moved forward.
- the position of the lancet body 216 is the same as that in FIG.
- the lancet cover 214 and the lancet body 216 are separated from each other, and the distal end portion 232 of the puncture element 220 is exposed.
- the lancet body and the lancet cover are independent members, the lancet body force moves away from the lancet cover, and the tip of the puncture element is finally exposed.
- a state in which force is applied to the base 206 so as to push the lancet structure 200 forward to further insert the lancet structure 200 is shown in a perspective view in Fig. 5.
- the arm 208 moves forward, but the lancet body 216 cannot move forward due to the contact state between the protrusion 226 and the protrusion 116. Therefore, the position of the lancet body 216 has not changed.
- the spring is compressible, the base 206 moves further forward and the lancet holder Both ends 252 of the base abut a step 250 provided in an opening at one rear end, so that further insertion is not possible.
- the protrusion 226 is provided on the connector 212.
- the protrusion may be provided on the spring 210 or on the lancet body 216.
- the front end of the arm is configured so as to be able to engage with the lancet cover. More specifically, the front end 222 of the arm 208 has a hook-shaped portion (or L-shaped portion) 223 bent inward, and the lancet cover 214 has a portion 225 capable of engaging with the hook-shaped portion. Stipulate. In the embodiment shown, such a portion defines a complementary shape 225 into which the hook 223 fits (see FIG. 8).
- the engagement of the front end of the arm with the lancet cover allows the lancet cover 214 to engage the front end 222 of the arm 208 due to the engagement relationship even after the puncturing element 220 has been separated therefrom.
- the contact state with the lancet cover 214 is ensured.
- the lancet power bar 214 can also retract with the arm 208.
- the arm When the engagement relationship cannot be secured in this way, when the arm retreats, the lancet cover force is released, and when the arm is further advanced, the front end 222 of the arm 208 and the lancet cover 214 are not moved. It may not be easy to secure the contact state. It is apparent that the arm may have a shape other than the hook-shaped portion as long as the front end of the arm can be engaged with the lancet cover.
- the lancet holder has guide means on the side inner wall at the front end thereof, the lancet cover has guided means guided by the guide means, The point that the lancet cover moves obliquely forward (diagonally upward or downward) when the separated lancet cover moves forward by the arm that moves forward by the cooperation of the guide means and the guided means.
- the lancet holder has, as a guide means, a slide portion extending obliquely forward on a side inner wall at a front end thereof, and the lancet cover has a portion that slides on the slide portion, for example, a protrusion. Part as guided means.
- the lancet cover has, as a guide means, a slide portion extending obliquely forward on a side inner wall at a front end thereof, and the lancet cover has a portion that slides on the slide portion, for example, a protrusion. Part as guided means.
- the separated lancet cover 214 is pushed by the arm 208, and as a result, is in contact with the inside of the front wall 234 of the lancet holder.
- a tapered portion 236 having a tapered portion in the vertical direction toward the front is provided as guided means.
- the lancet holder 100 has a tapered portion (ie, a reverse taper portion) 238 having a forward divergent shape provided on the inner side wall at the front end thereof as a guide means. (See Fig. 4). These tapered portions allow the lower surface of the tapered portion 236 to slide on the inclined surface 254.
- the tapered portion 236 of the lancet cover 214 pushed forward by the arm 208 climbs the inclined surface 254 of the reverse tapered portion 238. That is, the lancet cover 214 is moved obliquely forward and upward by the arm 208 and is in contact with the front wall 234 of the lancet cover. This contact state is ensured by maintaining the state where the arm 208 is pressed.
- such a movement of the lancet cover in the oblique direction is, for example, as shown in FIG. 14, the sliding portion is provided on the side inner wall at the front end of the lancet holder in the forward oblique direction.
- This is in the form of a convex portion or an inclined plate 270 having a sliding surface extending to the side, and the slidable portion is a side portion of the lancet cover or a convex portion provided thereon (similar to the convex portion in FIG. 15). This can be achieved in any of the embodiments.
- the slide portion is formed by a concave portion 272 provided on a side inner wall at the front end of the lancet holder and having a slide surface extending obliquely forward.
- the slidable portion is a convex portion 274 provided on the lancet cover, and can be achieved in a mode in which the convex portion is fitted into the concave portion and guided.
- the lancet cover 214 moves in the oblique direction as described above.
- the tip 232 of the exposed puncturing element punctures the fingertip or the like through the opening 108 at the front end of the lancet holder 100. Need to be sufficient to ensure that That is, when the lancet body 216 with the distal end portion 232 of the puncture element exposed is fired, the lancet cover 214 does not exist in front of the lancet body 232 in the moving direction of the distal end portion 232. Contact with the part 232 does not impede the movement of the tip (the lancet cover 214 is not on the track of the tip 232). In this sense, "direct" Use terminology.
- lancet cover 214 is held at the front end of lancet holder 100, and preparation for puncturing is completed.
- a tapered protrusion 240 having a widened width in the left-right direction is provided on the inner side wall of the lancet holder (between the protrusion 228 and the front end).
- the reverse tapered protrusion 230 provided in the middle of the arm 208 can pass over the protrusion 240.
- the protrusion 240 is preferably arranged such that the lancet cover 214 just abuts the inside of the front wall 234 of the lancet holder when the protrusion 230 gets over it.
- FIG. 6 is a perspective view schematically showing a state in which the tip portion protrudes. Since the spring 210 is instantaneously released from the compressed and restrained state, the spring 210 is extended from the original shape shown in FIG. 1 in FIG.
- the puncturing element punctures a predetermined site
- the extended spring 210 attempts to force it back to its original shape, which eventually results in FIG. It returns to the same shape as the state. This is shown in FIG.
- the tip 232 of the piercing element is located a sufficient distance inward from the opening 108 of the lancet holder (in FIG. 7, since it is below the lancet cover 214, (Not visible), so that the external force of the lancet holder 100 can be substantially prevented from touching the tip portion 232 of the puncturing element exposed from the opening 108.
- the state shown in FIG. 7 is a state in which puncturing has been completed using the lancet assembly, so that the state shown in FIG. 7 can be disposed.
- the provision of the tapered protruding portions 230 and 240 prevents the lancet structure 200 from being pulled out of the lancet holder 100 even with the state force shown in FIG. 7, so that disposal such as disposal in the state shown in FIG.
- the tip of the puncture element is not exposed, so that unintended contact with the tip can be avoided, and the safety at the time of disposal is improved.
- each arm 208 has a protrusion 260 as a guide pin.
- the guide pin is configured to cooperate with a channel provided in the inner surface of the lancet holder and extending in the puncturing direction. That is, when inserting the lancet structure into the lancet holder, the guide pin slides in the channel, and as a result, the arm moves smoothly forward in the lancet holder, and the insertion becomes smooth. That is, the guide pin guides the forward movement of the arm in the lancet holder.
- the connector 212 has a protrusion 262 as a guide pin.
- the guide pin cooperates with another channel in the inner surface of the lancet holder, which extends in the piercing direction. That is, when the lancet structure is inserted into the lancet holder, the guide pins slide in the channel, and as a result, the connector 212, ie, the coupled lancet body 216, moves smoothly forward in the lancet holder. And the insertion becomes smoother.
- this channel facilitates the lancet body 216 being fired and puncturing, and subsequently moving back and forth along the puncturing direction within the lancet body 216 force S during the process of retracting the tip of the puncturing element. I do.
- the lancet structure of the present invention includes an ejector 202 and a lancet 204, which are integrally connected via a connector 212. Any suitable method may be used for these connections. For example, one of a set of recesses (female or keyhole) and protrusions (male or key) that can be fitted into each other (preferably having complementary shapes) is formed in the connector 212. Then, the other is formed by forming the lancet body 216.
- the lancet body and the connector engage and cannot be separated in the front-rear direction, but the concave portion is inserted into the connector so that the connector can be fitted (or separated) in the vertical direction. Then, a convex portion is formed on the lancet body (or vice versa).
- FIG. 8 shows an example of such a connection.
- the lancet body 216 has a convex portion 270 as a whole, and the connector 212 has a concave portion 272 into which the convex portion can be fitted.
- the connector 212 and the lancet body 216 do not separate with respect to the force in the front-rear direction, and they behave as one unit. I do.
- the connector 212 and the lancet body 216 can be easily separated. Adopting such a connection method is advantageous because the lancet and the ejector can be separately formed and combined together.
- tapereding or “spreading” of the tapered portion refers to the taper portion as viewed from the front (“forward” in FIG. 1).
- the width of the part (the dimension perpendicular to the front direction) becomes narrower! /, It is called “tapering”, and when it spreads! /, It is called “spreading”.
- the inverted tapered portion means that the portion has a taper shape opposite to that of the corresponding tapered portion. That is, when one is tapered and the other has a tapered shape, the former is called a tapered shape, the latter is called an inverted tapered shape, and conversely, when the latter is called a tapered shape, the former is called a reversed tapered shape. It is called a tapered shape. The same applies to the “tapered shape”.
- Puncture with the lancet assembly of the present invention occurs as follows:
- the lancet structure 200 is inserted through the opening 104 at the rear end of the lancet holder 100 (the state shown by the arrow in FIG. 1). [0058] 2) The lancet structure 200 is moved forward in the lancet holder 100, and the front end of the protrusion 226 provided on the lancet body 216 is connected to the protrusion as a stopper provided in front of the trigger 110 of the lancet holder 100. 116, so that the movement of the lancet 204 is stopped and the lancet 204 is not moved forward any more, that is, the lancet is restrained from moving forward (see FIG. 3). Status).
- a blood collection target site for example, a fingertip
- a blood collection target site for example, a fingertip
- FIG. 9 is a cross-sectional view corresponding to the state of FIG. Figure 9 shows the lancet body 216 It can be seen that the protrusion 226 is in contact with the protrusion 116 located in front of the trigger 110 of the lancet holder 100.
- a V-shaped notch 218 integrally connects the lancet cover 214 and the lancet body 216.
- FIG. 10 is a cross-sectional view corresponding to the state in FIG. In FIG. 10, the lancet cover 214 is separated from the lancet body 216, and the distal end portion 232 of the puncture element is exposed. Further, it can be seen that the spring 210 is compressed as compared with FIG.
- FIG. 11 is a cross-sectional view corresponding to the state in FIG. In FIG. 11, the lancet cover 214 is in contact with the inside of the wall at the front end of the lancet holder. As can be seen from the figure, the lancet cover has moved not only forward but also upward as compared to the state of FIG. That is, it is moving forward and obliquely upward. This is also the force by which the tapered portion 236 located on the side of the lancet cover moves along the inclined surface 254 of the reverse tapered portion 238 provided inside the front end of the lancet holder.
- FIG. 12 is a cross-sectional view corresponding to the state in FIG. In FIG. 12, the tip portion 232 of the puncturing element has protruded from the front end opening 108 of the lancet holder 100. As can be seen from the drawing, since the lancet cover 214 has been moved diagonally forward and upward, it does not hinder the movement of the puncture element at all.
- FIG. 13 is a cross-sectional view corresponding to the state in FIG. In FIG. 13, the distal end portion 232 of the puncturing element has been retracted sufficiently inward from the front end opening 108 of the lancet holder 100. As can be seen, it is virtually impossible to touch the tip 232 of the piercing element from the opening 108 unless it is intended to do so at all.
- the lancet assembly of the present invention as described above provides a simpler blood collection means.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002567498A CA2567498A1 (en) | 2004-05-17 | 2005-05-16 | Lancet assembly |
EP05739338A EP1747756A4 (en) | 2004-05-17 | 2005-05-16 | Lancet assembly |
JP2006513589A JP4635002B2 (ja) | 2004-05-17 | 2005-05-16 | ランセットアッセンブリ |
US11/596,711 US7883523B2 (en) | 2004-05-17 | 2005-05-16 | Lancet assembly |
HK07107700.9A HK1099994A1 (en) | 2004-05-17 | 2007-07-18 | Lancet assembly |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004146321 | 2004-05-17 | ||
JP2004-146321 | 2004-05-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005110225A1 true WO2005110225A1 (ja) | 2005-11-24 |
Family
ID=35393943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/008899 WO2005110225A1 (ja) | 2004-05-17 | 2005-05-16 | ランセットアッセンブリ |
Country Status (8)
Country | Link |
---|---|
US (1) | US7883523B2 (ja) |
EP (1) | EP1747756A4 (ja) |
JP (1) | JP4635002B2 (ja) |
KR (1) | KR20070011514A (ja) |
CN (1) | CN100443049C (ja) |
CA (1) | CA2567498A1 (ja) |
HK (1) | HK1099994A1 (ja) |
WO (1) | WO2005110225A1 (ja) |
Cited By (8)
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WO2007037207A1 (ja) | 2005-09-29 | 2007-04-05 | Izumi-Cosmo Company, Limited | ランセットアッセンブリおよび穿刺デバイス |
WO2007145204A1 (ja) * | 2006-06-13 | 2007-12-21 | Izumi-Cosmo Company, Limited | ランセットアッセンブリ |
WO2007145102A1 (ja) * | 2006-06-13 | 2007-12-21 | Izumi-Cosmo Company, Limited | ランセットアッセンブリおよび穿刺デバイス |
GB2440118A (en) * | 2006-07-18 | 2008-01-23 | Owen Mumford Ltd | Skin pricking device |
JPWO2006038340A1 (ja) * | 2004-10-06 | 2008-05-15 | 泉株式会社 | ランセットアッセンブリ |
WO2009041110A1 (ja) * | 2007-09-28 | 2009-04-02 | Izumi-Cosmo Company, Limited | ランセットアッセンブリおよび穿刺デバイス |
KR100932946B1 (ko) | 2008-03-19 | 2009-12-21 | 홍관호 | 채혈기 |
JP2012508633A (ja) * | 2008-11-17 | 2012-04-12 | オーウェン マンフォード リミテッド | 皮膚穿刺装置 |
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JP5514008B2 (ja) | 2010-06-22 | 2014-06-04 | ニプロ株式会社 | ディスポーザブル型穿刺器具 |
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Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4651622B2 (ja) * | 2004-10-06 | 2011-03-16 | 泉株式会社 | ランセットアッセンブリ |
JPWO2006038340A1 (ja) * | 2004-10-06 | 2008-05-15 | 泉株式会社 | ランセットアッセンブリ |
WO2007037207A1 (ja) | 2005-09-29 | 2007-04-05 | Izumi-Cosmo Company, Limited | ランセットアッセンブリおよび穿刺デバイス |
US8246645B2 (en) | 2005-09-29 | 2012-08-21 | Izumi-Cosmo Company, Limited | Lancet assembly and pricking device |
WO2007145204A1 (ja) * | 2006-06-13 | 2007-12-21 | Izumi-Cosmo Company, Limited | ランセットアッセンブリ |
WO2007145102A1 (ja) * | 2006-06-13 | 2007-12-21 | Izumi-Cosmo Company, Limited | ランセットアッセンブリおよび穿刺デバイス |
JP5036711B2 (ja) * | 2006-06-13 | 2012-09-26 | 泉株式会社 | ランセットアッセンブリおよび穿刺デバイス |
JPWO2007145204A1 (ja) * | 2006-06-13 | 2009-10-29 | 泉株式会社 | ランセットアッセンブリ |
GB2440118A (en) * | 2006-07-18 | 2008-01-23 | Owen Mumford Ltd | Skin pricking device |
JP2012020164A (ja) * | 2007-09-28 | 2012-02-02 | Izumi-Cosmo Co Ltd | ランセットアッセンブリおよび穿刺デバイス |
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WO2009041110A1 (ja) * | 2007-09-28 | 2009-04-02 | Izumi-Cosmo Company, Limited | ランセットアッセンブリおよび穿刺デバイス |
KR100932946B1 (ko) | 2008-03-19 | 2009-12-21 | 홍관호 | 채혈기 |
JP2012508633A (ja) * | 2008-11-17 | 2012-04-12 | オーウェン マンフォード リミテッド | 皮膚穿刺装置 |
Also Published As
Publication number | Publication date |
---|---|
CN1953707A (zh) | 2007-04-25 |
EP1747756A4 (en) | 2010-08-04 |
US7883523B2 (en) | 2011-02-08 |
EP1747756A1 (en) | 2007-01-31 |
KR20070011514A (ko) | 2007-01-24 |
US20070225742A1 (en) | 2007-09-27 |
JPWO2005110225A1 (ja) | 2008-03-21 |
CA2567498A1 (en) | 2005-11-24 |
CN100443049C (zh) | 2008-12-17 |
HK1099994A1 (en) | 2007-08-31 |
JP4635002B2 (ja) | 2011-02-16 |
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