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Publication numberUS2595511 A
Publication typeGrant
Publication date6 May 1952
Filing date29 Oct 1948
Priority date29 Oct 1948
Publication numberUS 2595511 A, US 2595511A, US-A-2595511, US2595511 A, US2595511A
InventorsButler William F
Original AssigneeCutter Lab
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Pinch valve
US 2595511 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

y 6, 1952 w. F. BUTLER 2,595,511

PINCH VALVE Filed Oct. 29, 1948 j Z 1 INVENTOR.

fl m/m/ 1. 50/752 Patented May 6, 1952 PIN CH VALVE William F. Butler, Oakland, Calif., assignor to Cutter Laboratories, Berkeley, Calif., a corporation of California Application October 29, 1948, Serial No. 57,209

1 Claim.

controlling the flow of fluid through a section of collapsible tubing and particularly useful for controlling the flow of blood from a blood donor to a flask.

When taking blood from a donor, a hypodermic needle connected through a section of the collapsible tubing with a flask is inserted in the vein of the donor and then communication with the flask is established by opening a pinch valve associated with the tubing. Thereafter a rotary movement is imparted to the flask to agitate the blood going thereinto with a small volume of sodium citrate contained in the flask and which serves to prevent the blood from coagulating. During this operation due precautions must be taken to avoid pulling the hypodermic needle away from the donor for in the first place any movement of the needle is painful to the donor, and if, by chance, the needle is pulled away from the donors vein it must of necessity be reinserted and this operation is at best disagreeable. Furthermore, precautions must be taken to prevent the introduction of any air into the blood for the introduction of air into the veins-of a patient cannot be tolerated.

More specifically, the object of this invention is the provision of a pinch valve constituting an improvement to the valve shown in the Butler et a1. Patent No. 2,309,302, which can be placed in its operative position over the collapsible tubing without the necessity of threading the tubing to the pinch valve and which enables the operator precisely to control the flow of blood through the tubing and into its associated flask.

These and other objects of the invention will be apparent from the ensuing description and the appended claims.

The invention possesses other advantageous features, some of which, with the foregoing, will be set forth at length in the following description where that form of the invention which has been selected for illustration in the drawings accompanying and forming a part of the present specification is outlined in full. In said drawings, one form of the invention is shown, but it is to be understood that it is not limited to such form, since the invention as set forth in the claims may be embodied in a plurality of forms.

Referring to the drawings:

Fig. 1 is a top plan view of a pinch valve embodying the objects of my invention.

Fig. 2 is a side elevation of the pinch valve shown in Fig. l.

Fig. 3 is a vertical mid-section taken on the line 3-4 of Fig.1.

Fig. 4 is a right end elevation of the valve shown in Figs. 1 and 2.

Fig. 5 is a fragmental side elevation of the right end of the valve shown in Figs. 1 and 2 showing the roller of the pinch valve as it approaches its open position.

Fig. 6 is a right end elevation of my valve similar to Fig. 4 but with the roller of the valve in its fully opened position.

As shown in these various figures, my valve includes a channel generally designated by the numeral I and including a base 2 and upstand ing sides 3 and 4, arranged to receive a section 5 of rubber tubing having a diameter somewhat smaller than the width of the channel I. The sides 3 and 4 are wedge shaped with respect to the longitudinal axis of the channel and are overturned at their upper edges so as to form outwardly extending side wings 6 and l. Formed in the sides 3 and i are inclined cam slots or trunnion ways 8 and 9, the upper edges of which are serrated as at It Forming an extension of the upper right hand end of each of the trunnion ways 8 and 9 are U-shaped slots I I and I2 terminating in re-entrant openings [3 and I4 formed in the wings 6 and l.

Accommodated within the channel I is a knurled roller I5 mounted on opposed axially aligned trunnions I6 and I! receivable in the opposed trunnion Ways 8 and 9. The trunnion Il terminates in a sphere I8 of a diameter larger than the width of the trunnion ways 8 and 9. In the assembly of the roller I5 and the channel I the sphere I8 is inserted through the re-entrant opening M which from an inspection of Fig. 1 will be seen to be of spherical form. Initially the reentrant opening I4 is of a diameter larger than the sphere I8. After the sphere I8 has been introduced through the re-entrant opening I4, the diameter of this opening is reduced in size by a conventional swaging operation, to prevent the trunnion I I from passing through the re-entrant opening I4 or through its associated trunnion way 9. The opposed tninnion I 6 may then be passed through its re-entrant opening I3 and both trunnions moved downwardly, then upwardly, within their associated U-shaped slots I2 and I3 and into their respective trunnion ways 8 and 9. As the trunnions enter the trunnion Ways 8 and 9 the lower surface of the roller I5 comes into engagement with the upper edge of the section of the tubing 5 and if then the roller be moved to the left as viewed in Figs. 1, 2, 3 and 5, the tubing will be progressively pinched from its fully open position as shown in Fig. 2 to its fully closed position as shown in Fig. 3. The knurled upper edge of the trunnion ways 8 and 9 serves to retain the roller 15 in any predetermined position along its trunnion ways.

From'this description it will be seen that I have provided a pinch valve which can be placed on or removed from a section of tubing without the necessity of threading the end of the tubing through the valve and by which a very precise control of the flow of the fluid through the tubing can be readily maintained at all times.

I claim:

A device of the character described for controlling the fiow of fluid through a section of flexible tubing comprising: a channel including a base and a pair of upstanding sides for the accommodation of said section of flexible tubing, said sides having outwardly extending wings; trunnion guide ways formed in said sides, said guide ways being inclined longitudinally with respect to said base and having re-entrant openings at the high ends thereof extending through 'said wings, and said guide ways being serrated only on their upper edges; and a roller receivable in said channel and mounted on trunnions receivable in said guide ways, the end of only one of said trunnions being enlarged to prevent its passage through its associated guide way.

WILLIAM F. BUTLER.

REFERENCES CITED The following references are of record in the file. of this, atent:

UNITED STATES PATENT

Patent Citations
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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2948939 *11 Jul 195716 Aug 1960Gordon D BrownQuick release buckle with removable strap gripping bars
US3099429 *14 Apr 196030 Jul 1963Baxter Laboratories IncRoller clamp for parenteral solution equipment
US3135259 *12 Dec 19632 Jun 1964Sterilon CorpInfusion flow control valve
US3189038 *8 Jun 196215 Jun 1965Baxter Don IncVariable flow clamp for flexible tubing
US3215395 *25 Jun 19622 Nov 1965Gorbar NettieRegulating clamp for flexible tubes
US3329391 *28 Sep 19644 Jul 1967Deane William VSurgical pinch valve
US3497175 *11 Sep 196724 Feb 1970Betty K KolandFluid regulator and closure valve
US3893468 *22 Jun 19708 Jul 1975American Hospital Supply CorpClamp for flexible tube and method of regulating flow in such tube
US3915167 *23 May 197428 Oct 1975Atlantic Design & Dev CorpIntravenous clamp
US3918675 *24 Aug 197311 Nov 1975TranscodanFlow regulating device particularly for infusion and transfusion tubes
US3960149 *13 Nov 19741 Jun 1976Abbott LaboratoriesFlow control device
US3984081 *25 Oct 19745 Oct 1976The Raymond Lee Organization, Inc.Medical device for controlling flow of intravenous solutions
US4270725 *27 Nov 19792 Jun 1981Baxter Travenol Laboratories, Inc.Roller clamp for defining a flow lumen in tubing
US4285492 *20 Sep 197925 Aug 1981Abbott LaboratoriesFlow control device
US4335866 *25 Jun 198122 Jun 1982Abbott LaboratoriesFlow control device
US4337791 *17 Nov 19806 Jul 1982La-Van Tech Development Corp.Flow regulator assembly
US4406440 *15 Sep 198127 Sep 1983Baxter Travenol Laboratories, Inc.Flow regulating device
US4697785 *14 Apr 19866 Oct 1987Tuseth Robert DClamp for regulating flow of parenteral solutions
US4869721 *6 Feb 198726 Sep 1989Karpisek Ladislav StephanFlow regulator for liquids
US5352214 *22 Mar 19934 Oct 1994Oscarsson Rolf ATubing clamb to control flow through compressible tubing
US69292357 Apr 200316 Aug 2005Massachusetts Institute Of TechnologyApparatus for flow rate control
US6929236 *7 Apr 200316 Aug 2005Massachusetts Institute Of TechnologyApparatus for flow rate control
US7621883 *14 Oct 200424 Nov 2009Patterson Medical Products, Inc.Slide lock
US82213889 Apr 201017 Jul 2012Tyco Healthcare Group LpBiased clamping assemblies
US831308110 Oct 200620 Nov 2012Adelberg Kenneth NParallel-acting roller clamp for intravenous administration set
US841969418 Dec 200916 Apr 2013Covidien LpExtension tube clamps for use with a catheter
US852382811 Dec 20093 Sep 2013Covidien LpClamping assembly for use with a catheter
US870268131 May 201222 Apr 2014Progeny Concepts, LlcCatheter valve and methods of using same
US9131939 *27 Feb 200915 Sep 2015Mitralign, Inc.Device for percutaneously delivering a cardiac implant through the application of direct actuation forces external to the body
US9623230 *8 Nov 201218 Apr 2017Dong Kwan KimIV flow controller having flushing feature
US20060084897 *14 Oct 200420 Apr 2006Abilityone CorporationSlide lock
US20080083890 *10 Oct 200610 Apr 2008Adelberg Kenneth NParallel-acting roller clamp for intravenous administration set
US20100168680 *11 Dec 20091 Jul 2010Tyco Healthcare Group LpClamping Assembly for Use With A Catheter
US20100274174 *9 Apr 201028 Oct 2010Tyco Healthcare Group LpBiased Clamping Assemblies
US20150190628 *8 Nov 20129 Jul 2015Dong Kwan KimIV Flow Controller Having Flushing Feature
DE1109971B *3 Sep 195929 Jun 1961Sven Husted AndersenSchlauchklemme mit in einem U-Profil-Stueck vorgesehener Druckrolle
EP2204214A1 *24 Dec 20097 Jul 2010Tyco Healthcare Group LPClamping assembly for use with a catheter
WO2012065650A1 *19 Nov 201024 May 2012Carefusion CorporationRoller clamp
WO2013180866A1 *26 Apr 20135 Dec 2013Endo Pharmaceuticals Inc.Catheter valve and methods of using same
Classifications
U.S. Classification251/6, D23/245
International ClassificationA61M39/00, A61M39/28
Cooperative ClassificationA61M39/286
European ClassificationA61M39/28F