|Publication number||US3895632 A|
|Publication date||22 Jul 1975|
|Filing date||11 Feb 1974|
|Priority date||6 Mar 1973|
|Publication number||US 3895632 A, US 3895632A, US-A-3895632, US3895632 A, US3895632A|
|Original Assignee||Technological Supply|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (4), Referenced by (46), Classifications (21)|
|External Links: USPTO, USPTO Assignment, Espacenet|
United States Patent Plowiecki July 22, 1975  TROCAR CATHETER 3,416,567 (\gon Dardlel ct a1. 128/274 X 3,525,363 1 ore eta 251/309 X 1 lnvemorl Leolmld Plwmkh Mommorency 3,774,604 11/1973 Danielsson 128/2144 France T 1 1 1  Asslgnee it s z Supp y S A Primary Exammer-Dalton L. Truluck Attorney, Agent, or Firm-Anthony A. OBrien  Filed: Feb. 11, 1974  Appl. No.: 441,494
 ABSTRACT  Foreign Application Priority Data Mar 6 1973 France 07873 The catheter of a trocar is provided with a moulded connector having a chamber in which a hollow cylin-  U S Cl 128/2144, l28/274 128/347, drical valve is rotatable. A flexible extension of the 7 137/525 251/309 valve serves to obturate an inlet to the chamber and  Int C12 L 5/00 the insertion of a needle serves to deflect the exten-  Fie'ld 347 274 sion so that it can pass through the inlet and out ig through an opposite outlet and thence through the at tached catheter.
 References Cited UNITED STATES PATENTS 6 Claims, 4 Drawing Figures 3,144,177 8/1964 Cookson 137/5253 X PATENTEDJULZZ I975 3.895532 FIGJ 3 7, 30
race/ta cameras BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to terminal connector for a catheter used for example for trocars for the administration by a veinous or arterial path liquids such as blood. The invention also relates to a catheter including such a connector and a trocar including such a catheter.
2. Summary of the Prior Art Trocars of earlier construction comprise a synthetic resin catheter and a metal perfusion needle. In order to use such a trocar. it is introduced into a vein or an artery, the needle is then withdrawn from the catheter, the latter remaining inserted in the vein or artery and the terminal end of the catheter is then connected to a supply reservoir of liquid to be administered. Such a trocar has various disadvantages: in the case of renal dialysis. the main disadvantage is that at each puncture of the vein or the artery. the blood flows between the time when the needle is retracted and the time when the catheter is connected by its outer terminal end to the supply reservoir. In the case of renal dialysis. the fact that this loss of blood is repeated each week risks the substantial weakening of the patient.
SUMMARY OF THE INVENTION According to a preferred method for carrying out the invention, the terminal connector of the catheter comprises a transverse chamber having only one liquid inlet and only one opposed liquid outlet and in which cham her an obturating member is rotatably mounted. This member is extended by a small tongue constituting an obturating part which in one position of the member that is the operative position. abuts against the wall of the chamber at the inlet side so as to prevent the re verse flow ofliquid through the inlet and leaves free the outlet in the wall of the chamber opposite the inlet. This small tongue or other extension is sufficiently flexible to be capable of being deflected by liquid passing through the inlet or by a member introduced into the inlet when the tongue is in thisoperative position. The obturating member is so shaped that by rotation through one-quarter of a turn in one sense or the other with respect to the operative position, it reaches an intermediate position in which it leaves a free passage through the chamber.
Further according to the present invention there is provided in a terminal connector for a catheter having a chamber transverse to the catheter longitudinal axis with a single inlet for liquid and a single opposed outlet for liquid and in which an obturating plug is rotatable to control such inlet and outlet. 21. flexible extension to the plug disposed to obturate such inlet in one position of the plug and to prevent in this position any reverse flow through the inlet. the plug being rotatable to an intermediate position permitting free passage between such inlet and outlet through the chamber.
The terminal connector of the trocar catheter according to the invention enables the disadvantage referred to. to be overcome. It enables, in fact, the prevention of flow of blood from the vein or the artery of the patient once the needle has been withdrawn from the catheter and it then enables a normal perfusion after the terminal connector of the catheter has been connected to the supply reservoir.
BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is a longitudinal section of a catheter of a trocar provided with a terminal connector of which an obturating plug in a valve chamber is in an operative position;
FIG. 2 is a section similar to FIG. 1 but in which a flexible or other extension has been deflected by a perfusion needle introduced into the terminal connector and into the catheter;
FIG. 3 is a perspective view of the obturating plug; and
FIG. 4 is a section of the terminal connector on line IVIV of FIG. 1, the plug being turned through a quarter of a turn so as to be in an intermediate position.
In these Figures the common members are designated by the same reference numerals.
The trocar of FIG. 1 includes a terminal connector 10 moulded onto an end portion of a catheter 12, the other end portion 14 of the catheter being chamfered or otherwise shaped so as to facilitate introduction into a vein or artery. The terminal connector 10 can be connected to a supply system by an end portion 16.
The terminal connector 10 comprises a transverselyextending chamber 18 in which is rotatably mounted a plug 20 for obturating or blocking an inlet 22 of this chamber. The latter also comprises an outlet 24 opposite to the inlet 22.
The plug 20 shown separately in FIG. 3 is a hollow cylinder extended by a small flexible tongue 26 which can be folded so as to lie parallel to the bottom of the chamber (see FIG. 2). The upper end of the hollow cylinder forming the plug terminates in a head 28 having a slot 30 similar to the slot of the head of a screw. The plug 20 is rotatable by a cap 32 forming a control button, preferably in the form of an arrow-headed button enabling the ready identification of possible positions of the plug.
The cap 32 comprises an internal ridge 34 which cooperates with the slot 30 of the head of the plug in order to turn the latter in the chamber.
The cap 32 is snapped on the terminal connector 10 with the aid of an internal annular groove 36 formed in the interior of the cap and which cooperates with an annular ridge 38 provided on the external surface of that part of the connector defining the chamber.
The cap 32 thus enables the plug 20 to be rotated and to prevent the latter from leaving the chamber 18.
In FIG. 1, the plug 20 is in an operative position, the small tongue 26 blocking the inlet 22 of the chamber. The small tongue thus prevents any return flow of the liquid towards the supply, but is sufficiently flexible to be deflected to lie parallel to the base of the cylinder constituting the plug under the action either of the pressure force exerted by the supply liquid or by a needle 40 which is introduced into the catheter.
In FIG. 2 the perfusion needle 40 is introduced into the terminal connector 10 and into the catheter 12, the needle terminating at a point 42 which extends beyond the chamfered end 14 of the catheter 12 so that when the trocar is introduced into a vien or artery, the introduction of the needle prepares for the introduction of the catheter. The needle 40 comprises at its opposite end a ferrule or bushing 44 (shown only in part) which seals with the end portion 16 of the terminal connector 10. The tongue 26 is raised towards the lower rim of the cylinder constituting the plug when the needle 40 is introduced.
In FIG. 4 the plug is in an intermediate position, the plug having been turned through a quarter of a turn in one sense or the other with respect to the position of FIG. 1. The inlet 22 of the chamber 18 is not blocked and the same applies to the outlet 24 which is not'visible in this section.
The plug thus leaves the passage free either for the perfusion liquid or for a needle.
A trocar equipped with a terminal connector for the catheter thereof in accordance with the invention is used in the following manner: Before use, the plug is turned to place it in the operative position shown in FIG. 1. The needle is then inserted into the trocar, the assembly introduced into the vein or the artery and then the needle is withdrawn from the catheter. H
Because of the resilience of the tongue and the pressure of the veinous liquid, the tongue 26 moves to block the inlet 22 of the chamber 18 and thus to prevent any reflux of blood of the patient. The terminal connector is then connected through the catheter end portion 16 to the supply system and, under the action of the pressure force exerted by the supply liquid, the tongue 26 is again deflected and leaves the passage free for liquid flow. If it is desired to permit a larger flow for perfusion, the plug can be turned through a quarter turn to the intermediate position of FIG. 4.
The cost of manufacture of the terminal connector of the catheter in accordance with the invention is sufficiently competitive that it can be employed for trocars which are used only once.
The trocar is made by moulding or by cementing of the terminal connector onto a flexible tube with a chamfered end, the synthetic material being preferably the same for the connector and for the tube.
The plug 20 is made ofa synthetic, flexible and resilient material so that the tongue 26 can readily be deflectedand will return on its own accord into the normal position, that is to say into the extension of the generating lines of the cylinder forming the plug, under the action of its own resilience.
In orderto facilitate the rotation of the plug 20 in the chamber 18, it is preferable to use a lubricant, but this should not mix with the supply liquid and so contaminate it.
The method of carrying out the invention as hereinbefore descriged is not to be considered as limiting, so that any variation or modification having the characteristics essential to the invention will not depart from the scope of the latter.
1. An intravenous catheter and terminal connector therefor having a longitudinal axis, said connector having a chamber transversely disposed to the longitudinal axis, said chamber having a single inlet in one wall of the chamber and a single outlet in an opposite wall of the chamber, and an obturating plug rotatably disposed in said chamber to control the inlet and outlet, the improvement comprising a flexible extension integrally formed on a lower portion of said plug and being rotated therewith between operative and intermediate positions,
said flexible extension being rotated with said plug to its intermediate position between the said one wall and the said opposite wall of the chamber whereby a liquid may flow through the chamber,
said flexible extension abutting said one wall to cover the inlet when in its operative position to prevent a reverse flow of liquid through the inlet, said -flexi-.,.
ble extension being deflected away from said one wall by liquid passing through the inlet and by a member inserted through the inlet, and
said inlet and outlet being in alignment with said longitudinal axis whereby the member may be inserted therethrough and protrude through the catheter.
2. An intravenous catheter and terminal connector therefor according to claim 1, wherein the connector is integrally moulded onto the catheter.
3. An intravenous catheter and terminal connector therefor to claim 1, wherein the connector has an end portion adjacent said inlet and a bushing seals said end portion, and wherein said member comprises a perfusion needle centrally mounted in said bushing so as to be connectable to a liquid supply.
4. An intravenous catheter and terminal connector therefor according to claim 1 wherein the obturating plug comprises a hollow cylinder of flexible resilient material including a head with a transverse slot, the end of the cylinder opposite to the head carrying said flexible extension which takes the form of a prolongation of a part of the cylinder wall.
5. An intravenous catheter and terminal connector therefore to claim 4, comprising a cap mounted on the hollow cylinder, said cap having a ridge engaging in the slot of the plug head to rotate the plug.
6. An intravenous catheter and terminal connector therefor to claim 5, wherein the cap has an internal groove and the cylinder has an external ridge, the groove and the ridge being so disposed that when the cap is forced on to the cylinder, the ridge snaps into the groove to retain the cap on the cylinder.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US3144177 *||1 Jun 1962||11 Aug 1964||Cookson Maynard Charles Scott||Dispensers for syrups and like commodities|
|US3416567 *||12 Feb 1965||17 Dec 1968||Viggo Ab||Syringe valve|
|US3525363 *||2 Aug 1968||25 Aug 1970||Chicago Specialty Mfg Co||Means for controlling the direction of the flow of a liquid or fluid through a selected outlet|
|US3774604 *||28 Jan 1971||27 Nov 1973||Demeco Medical Products Ab||Infusion cannula assembly|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3945603 *||17 Apr 1975||23 Mar 1976||Fts Systems Inc.||Valve particularly adapted for use in vacuum work|
|US4072161 *||16 Aug 1976||7 Feb 1978||Rockwell International Corporation||Sealing member for valve stems|
|US4096860 *||8 Oct 1975||27 Jun 1978||Mclaughlin William F||Dual flow encatheter|
|US4217895 *||26 May 1978||19 Aug 1980||Terumo Corporation||Intravascular catheter|
|US4245635 *||29 Jan 1979||20 Jan 1981||Jelco Laboratories||Catheter assembly for intermittent intravenous use|
|US4454887 *||12 Apr 1982||19 Jun 1984||Krueger Christian||Medical instruments for introduction into the respiratory tract of a patient|
|US4535773 *||26 Mar 1982||20 Aug 1985||Inbae Yoon||Safety puncturing instrument and method|
|US4944728 *||17 Oct 1988||31 Jul 1990||Safe Medical Devices, Inc.||Intravenous catheter placement device|
|US4954130 *||17 Apr 1989||4 Sep 1990||William P. Waters||Catheter/heparin lock and method of using same|
|US5098393 *||31 May 1988||24 Mar 1992||Kurt Amplatz||Medical introducer and valve assembly|
|US5098394 *||31 May 1990||24 Mar 1992||Luther Ronald B||Biased shut off valve assembly for needle and catheter|
|US5226426 *||18 Dec 1990||13 Jul 1993||Inbae Yoon||Safety penetrating instrument|
|US5261895 *||26 Sep 1991||16 Nov 1993||Stryker Corporation||Apparatus for guiding surgical instruments into a surgical site and blocking escape of fluids from the site|
|US5300046 *||23 Sep 1992||5 Apr 1994||Symbiosis Corporation||Thoracentesis sheath catheter assembly|
|US5389080 *||31 Mar 1993||14 Feb 1995||Yoon; Inbae||Endoscopic portal for use in endoscopic procedures and methods therefor|
|US5401247 *||6 Jan 1994||28 Mar 1995||Yoon; Inbae||Safety penetrating instrument|
|US5429609 *||31 Mar 1994||4 Jul 1995||Yoon; Inbae||Endoscopic portal for use in endoscopic procedures and methods therefor|
|US5441486 *||9 Nov 1994||15 Aug 1995||Yoon; Inbae||Endoscopic portal for use in endoscopic procedures and methods therefor|
|US5458579 *||25 Nov 1992||17 Oct 1995||Technalytics, Inc.||Mechanical trocar insertion apparatus|
|US5538509 *||31 Jan 1994||23 Jul 1996||Richard-Allan Medical Industries, Inc.||Trocar assembly|
|US5549564 *||7 Jun 1993||27 Aug 1996||Yoon; Inbae||Safety penetrating instrument|
|US5569288 *||6 Jan 1994||29 Oct 1996||Yoon; Inbae||Safety penetrating instrument|
|US5586991 *||6 Jan 1994||24 Dec 1996||Yoon; Inbae||Safety penetrating instrument|
|US5676657 *||19 Mar 1996||14 Oct 1997||Yoon; Inbae||Endoscopic portal having multiluminal trumpet valve|
|US5704919 *||3 Dec 1993||6 Jan 1998||Travenol Laboratories (Israel) Ltd.||Intravenous cannula assembly|
|US5743883 *||7 Jun 1995||28 Apr 1998||Visconti; Peter L.||Thoracentesis catheter instruments having self-sealing valves|
|US5855566 *||1 Jun 1995||5 Jan 1999||Urohealth, Inc. (California)||Trocar assembly|
|US5941852 *||1 Jun 1995||24 Aug 1999||Imagyn Medical Technologies California, Inc.||Trocar assembly|
|US6083203 *||6 Jan 1995||4 Jul 2000||Yoon; Inbae||Endoscopic portal|
|US6217556||19 Mar 1998||17 Apr 2001||Allegiance Corporation||Drainage catheter|
|US7488130||1 Feb 2007||10 Feb 2009||Sanford, L.P.||Seal assembly for retractable instrument|
|US7775734||9 Feb 2009||17 Aug 2010||Sanford L.P.||Seal assembly for retractable instrument|
|US7850382||18 Jan 2007||14 Dec 2010||Sanford, L.P.||Valve made from two materials and writing utensil with retractable tip incorporating same|
|US7938805||19 May 2008||10 May 2011||Becton, Dickinson And Company||Radially compressible blood control valve|
|US8221012||7 Nov 2008||17 Jul 2012||Sanford, L.P.||Retractable instruments comprising a one-piece valve door actuating assembly|
|US8226312||28 Mar 2008||24 Jul 2012||Sanford, L.P.||Valve door having a force directing component and retractable instruments comprising same|
|US8246265||14 Dec 2010||21 Aug 2012||Sanford, L.P.||Valve made from two materials and writing utensil with retractable tip incorporating same|
|US8366684||12 May 2008||5 Feb 2013||Becton, Dickinson And Company||Intravenous catheter blood control device|
|US8393814||30 Jan 2009||12 Mar 2013||Sanford, L.P.||Retractable instrument having a two stage protraction/retraction sequence|
|US8568047||6 Sep 2012||29 Oct 2013||Sanford, L.P.||Retractable instrument having a two stage protraction/retraction sequence|
|US9101748||8 May 2008||11 Aug 2015||Becton, Dickinson And Company||Push-button blood control|
|US20090281481 *||12 May 2008||12 Nov 2009||Becton, Dickinson And Company||Intravenous catheter blood control device|
|US20090281525 *||8 May 2008||12 Nov 2009||Becton, Dickinson And Company||Push-button blood control|
|US20090287154 *||19 May 2008||19 Nov 2009||Becton, Dickinson And Company||Radially compressible blood control valve|
|WO2004009171A1 *||11 Jul 2003||29 Jan 2004||Georg-August-Universität Göttingen||Venous catheter provided with a t-shaped connecting fitting|
|WO2016178222A1 *||4 May 2016||10 Nov 2016||Malka Michel||Catheter with a safety faucet-valve|
|U.S. Classification||604/167.5, 251/309, 137/852|
|International Classification||F16K15/16, A61M39/06, F16K5/04, A61M39/24|
|Cooperative Classification||F16K15/16, A61M2039/062, A61M2039/2433, A61M39/06, A61M2039/242, F16K5/04, A61M39/24, A61M2039/0626, A61M2039/244, A61M2039/0633|
|European Classification||A61M39/24, F16K5/04, F16K15/16, A61M39/06|