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Publication numberUS2212334 A
Publication typeGrant
Publication dateAug 20, 1940
Filing dateAug 15, 1936
Priority dateAug 15, 1936
Publication numberUS 2212334 A, US 2212334A, US-A-2212334, US2212334 A, US2212334A
InventorsWallerich George W
Original AssigneeMueller & Co V
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Catheter
US 2212334 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

G. W. WALLERICH Aug. 20, 1940.-

CATHETER Filed Aug. 15, 1936 KIDNEY v UIPE 75/? R 1 m v M cel lulozzzc' Ma fer: a!

a a Maierv'al Mr W i .m M m w Patented Aug. 20, 1940 CATHETER George W. VVallerich, River Forest, 111., assignor to V. Mueller & 00., tion of Illinois Ghicago, 111., a corpora- Application August 15, 1936, Serial No. 96,189

1 Claim.

This invention relates Ito improvements in catheters and their mode of manufacture, especial reference being had to small appropriately flexible tubing and to ureteral catheters made therefrom.

l-leretofore, such catheters intended for the taking of specimens'of urine from the kidneys, the ureter and the bladder have been made by Winding silk on a small wire mandrel and then coating the silk with varnish or the like before removing the mandrel. Such catheters have been superficially opaqued for X-ray purposes by Supplying bismuth powder or the like to the varnish. But such catheters lack durability; they do not stand heat well; are not easily sterilized; and they lack desired smoothness.

I am also aware that cellulosic tubes have been made by extruding plastic material from a press; but I have never known of catheter tubing or any kind of tubing fit for ureteral or urethral catheterization being thus made; and I am not aware of X-ray opaque material ever having been mixed with any such extrusion material for any purpose whatever.

The main objects of this invention are to provide a better and safer catheter; to provide resiliently flexible catheters better adapted to withstand sterilization, especially by boiling or other application of heat; to provide smoother surfaced catheters, especially of small gauge; to

provide a nonabsorptive catheter; to provide cellulosic catheters and especially such devices adapted to cast X-ray shadows during use; to

provide for calibration of such catheters, both 35 for direct surface reading and also for X-ray observation; to provide for extrusion manufacture of Y-ray opaque catheter tubing; and to provide for such opacity calibration of catheters as to render X-ray shadows readable in terms of linear measurement.

This invention is illustrated by the accompanying drawing in which: Figure 1 is a perspective view of a finished catheter. 45 Fig. 2 is a diagrammatic view of the catheter in use with appropriate anatomical structures indicated in dotted outline.

Fig. 3 is a cross section of the catheter tubing, to show impregnation of the cellulosic wall with 50 bismuth powder or other X-ray opaque material.

Referring to said drawing the catheter l consists of a thin tube about twenty-six inches long having cellulosic walls 2 impregnated with bismuth powder indicated at 3. Said catheter has inlet openings 4 and 5 at or near one end; and the opposite end is open as at 6. The external diameter of the catheters ranges from 1.5 mm. to 5 mm.

The X-ray opacity of the walls 2 is varied at regular calibration intervals or points 1, as by appropriate application of bismuth paint in finishing the catheter. This may serve also for direct visual indication of linear measurement, for which purpose the paint may be specially pigmented if desired.

Suitable catheter tubing may be made by first mixing bismuth powder with appropriate cellulosic material, and then extruding the plastic compound ina manner generally understood in the tube moulding art. Various degrees of heat and pressure may be applied, depending upon the specific quality of the plastic .used. More or less of said powder may be used according to the degree of opacity desired.

The temperature range depends upon the exact make of the compound used and provided that the material is sufliciently plastic for tubular extrusion. This is a factor which can best be adjusted from time to time as the process is carried on,

The desired flexibility and resilience of the tubing may be attained by due selection from'a well-known quality range of said material. Various cellulose derivatives are adapted for my use, but I especially prefer cellulose acetate.

It is to be understood that some of the details set forth may be altered or omitted without departing from the spiritof the invention as defined by the following claim:

I claim:

The method or making a thin walled small gage flexible catheter adapted for bladder and kidney exploration which consists in extruding a plastic cellulosic material through a tubular molding die and at uniform brief intervals forcibly injecting into the stream of said material as it is being molded a small quantity of similar material impregnated with X-ray opaque material. 1

GEORGE w. WALLERICH.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2857915 *Apr 2, 1956Oct 28, 1958Sheridan David SX-ray catheter
US3190290 *Feb 8, 1962Jun 22, 1965Brunswick CorpIntercostal catheters
US3217705 *May 2, 1962Nov 16, 1965Billings Orman BDevice for testing internal bleeding
US3336918 *Dec 24, 1962Aug 22, 1967Us Catheter & Instr CorpRadiopaque, urethane-coated catheter and method for coating same
US3938529 *Jul 22, 1974Feb 17, 1976Gibbons Robert PIndwelling ureteral catheter
US3943929 *Nov 15, 1974Mar 16, 1976The Kendall CompanyMulti-chamber container and method
US3995642 *Apr 3, 1975Dec 7, 1976Medical Dynamics, Inc.Method and apparatus for retaining a drain tube within a ureter
US4105732 *Feb 25, 1977Aug 8, 1978Krandex Corp.Radiographic opaque and conductive striped medical tubes
US4168699 *Aug 8, 1977Sep 25, 1979Mentor CorporationSampling catheter
US4212304 *Apr 7, 1978Jul 15, 1980Medical Engineering Corp.Uretheral catheter stent
US4317791 *Jul 5, 1977Mar 2, 1982Bayer AktiengesellschaftTrimerization of polyisocyanates
US4444185 *Aug 19, 1981Apr 24, 1984Shugar Martin AFiberoptic tracheotomy method
US4469483 *Aug 25, 1982Sep 4, 1984Baxter Travenol Laboratories, Inc.Radiopaque catheter
US4671291 *Mar 31, 1986Jun 9, 1987Siemens Medical Systems, Inc.Angle encoding catheter
US4671795 *Nov 19, 1984Jun 9, 1987Mulchin William LPermanent/retrievable ureteral catheter
US4722344 *May 23, 1986Feb 2, 1988Critikon, Inc.Radiopaque polyurethanes and catheters formed therefrom
US4813925 *Apr 21, 1987Mar 21, 1989Medical Engineering CorporationSpiral ureteral stent
US4838879 *May 1, 1987Jun 13, 1989Terumo Kabushiki KaishaCatheter
US4931037 *Oct 13, 1988Jun 5, 1990International Medical, Inc.In-dwelling ureteral stent and injection stent assembly, and method of using same
US4967743 *Dec 1, 1988Nov 6, 1990Ballard Medical ProductsNeonatal closed system for involuntary aspiration and ventilation, and method
US5065754 *Jun 6, 1990Nov 19, 1991Ballard Medical ProductsAspirating catheter tube inserter
US5107829 *Apr 25, 1990Apr 28, 1992Ballard Medical ProductsNeonatal closed system for involuntary aspiration and ventilation, and method
US5133345 *Nov 14, 1991Jul 28, 1992Ballard Medical ProductsNeonatal closed system for involuntary aspiration and ventilation, and method
US5177170 *Jul 2, 1992Jan 5, 1993Miles Inc.From Cycloaliphatic Diisocyanates, Polyether Diols, and Tetrabromodipentaerythritol
US5215522 *Apr 5, 1991Jun 1, 1993Ballard Medical ProductsSingle use medical aspirating device and method
US5277177 *Jul 16, 1991Jan 11, 1994Ballard Medical ProductsSingle use medical aspirating device and method
US5346981 *Jan 13, 1993Sep 13, 1994Miles Inc.Brominated chain extender
US5456705 *Sep 6, 1994Oct 10, 1995Medtronic, Inc.Medical electrical lead having a torque indicator
US5611336 *Mar 30, 1995Mar 18, 1997Ballard Medical Products, Inc.For aspirating secretions from a medical patient's lungs
US5694922 *Aug 19, 1994Dec 9, 1997Ballard Medical ProductsSwivel tube connections with hermetic seals
US5895424 *Nov 12, 1996Apr 20, 1999Mentor CorporationProsthesis having an alignment indicator and method of using same
US5919170 *Jun 7, 1995Jul 6, 1999Mentor CorporationUrinary catheter
US5921952 *Aug 14, 1997Jul 13, 1999Boston Scientific CorporationDrainage catheter delivery system
US6036682 *Dec 2, 1997Mar 14, 2000Scimed Life Systems, Inc.Catheter having a plurality of integral radiopaque bands
US6248100May 14, 1999Jun 19, 2001Scimed Life Systems, Inc.Drainage catheter delivery system
US6264624Feb 25, 1999Jul 24, 2001Boston Scientific CoporationDrainage catheter delivery system
US6494203Nov 12, 1999Dec 17, 2002Ballard Medical ProductsMedical aspirating/ventilating closed system improvements and methods
US6500158 *Mar 26, 1998Dec 31, 2002The Trustees Of Columbia University In The City Of New YorkMethod of inducing negative pressure in the urinary collecting system and apparatus therefor
US6562024May 11, 2001May 13, 2003Scimed Life Systems, Inc.Drainage catheter delivery system
US6699216Nov 5, 2002Mar 2, 2004The Trustees Of Columbia University In The City Of New YorkMethod of inducing negative pressure in the urinary collecting system and apparatus therefor
US6796976Mar 5, 1999Sep 28, 2004Scimed Life Systems, Inc.Establishing access to the body
US7678100Sep 27, 2004Mar 16, 2010Boston Scientific Scimed, Inc.Apparatus for establishing access to the body
US7967838May 9, 2006Jun 28, 2011C. R. Bard, Inc.Removable embolus blood clot filter
US8372109Mar 18, 2010Feb 12, 2013C. R. Bard, Inc.Non-entangling vena cava filter
US8430903Nov 18, 2011Apr 30, 2013C. R. Bard, Inc.Embolus blood clot filter and delivery system
US8574261Jun 27, 2011Nov 5, 2013C. R. Bard, Inc.Removable embolus blood clot filter
US8613754Jul 29, 2010Dec 24, 2013C. R. Bard, Inc.Tubular filter
US8628556Nov 28, 2012Jan 14, 2014C. R. Bard, Inc.Non-entangling vena cava filter
US8690906Mar 7, 2012Apr 8, 2014C.R. Bard, Inc.Removeable embolus blood clot filter and filter delivery unit
US8753303Sep 17, 2010Jun 17, 2014Boston Scientific Scimed, Inc.Delivery system having stent locking structure
DE1965487A1 *Dec 30, 1969Nov 19, 1970Chemplast IncKatheter und Verfahren zu seiner Herstellung
EP0010757A1 *Oct 31, 1979May 14, 1980Intermedicat GmbHCatheter having contrast strips opaque to X-rays
Classifications
U.S. Classification264/330, 264/40.1, 604/523, 264/167, 43/42.24
International ClassificationA61M25/00, A61M25/01
Cooperative ClassificationA61M25/0009, A61M25/0108
European ClassificationA61M25/01C1, A61M25/00G