US3675656A - Fluid operatable hemostat - Google Patents

Fluid operatable hemostat Download PDF

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US3675656A
US3675656A US827859A US3675656DA US3675656A US 3675656 A US3675656 A US 3675656A US 827859 A US827859 A US 827859A US 3675656D A US3675656D A US 3675656DA US 3675656 A US3675656 A US 3675656A
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channel
bladder
hemostat
open end
blood vessel
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US827859A
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Salomon Hakim
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/122—Clamps or clips, e.g. for the umbilical cord
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00535—Surgical instruments, devices or methods, e.g. tourniquets pneumatically or hydraulically operated
    • A61B2017/00557—Surgical instruments, devices or methods, e.g. tourniquets pneumatically or hydraulically operated inflatable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B2017/12004—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for haemostasis, for prevention of bleeding

Definitions

  • ABSTRACT A quickly attached and operated hemostat for controllably occluding a blood vessel comprises an inflatable bladder mounted in or on a housing which includes a rigid open channeled jaw against which the bladder may be expanded.
  • the jaw is of a configuration preferably saddle shaped, rendering it openly receptive to a blood vessel.
  • a hemostat for controlling such a condition should be small and light in weight, quickly and easily attached to the vessel, and operable quickly, both to occlude the vessel and to relieve the occlusion prewure as the vessel should periodically be disoccluded in order to permit some blood flow to the area in order to prevent anoxia.
  • the present invention provides just such a hemostat. It con sists of a clamp arrangement, having a rigid jaw of channelled cross section, preferably oppositely curved in the longitudinal direction to present a saddle shape.
  • An inflatable diaphragm or bladder is mounted opposite the channel and is arranged to be expanded toward the jaw to provide a readily and remotely controllable clamping action.
  • the diaphragm is mounted to a housing including an extension which leads into the channelled jaw portion on one side only. The opposite side of the channel is open so that the vessel can be engaged simply by placing the hemostat around it with the vessel hooked, so to speak, in the channel and opposite the diaphragm.
  • a tube leading from the diaphragm to a pressure source, such as a syringe bulb provides for the application of fluid to inflate or deflate the diaphragm.
  • the housing and channelled jaw are unitary, the former being bell shaped with an extension from one side of the Opening which curves around to form the saddle shaped channel jaw.
  • This is formed of a rigid plastic, e.g. an epoxy resin, or metal.
  • the diaphragm is a balloon of silicone rubber mounted in the bell, with a tubular extension through a hole in the apex leading to a syringe bulb or other device for controlling the inflation of the balloon.
  • the entire hemostat may be extremely small, e.g. 2 mm across at the jaw channel.
  • FIG. I is an illustration of an attached hemostat and a syringe bulb connected to the hemostat to effect its operation
  • FIG. 2 is an illustration of the hemostat in a relaxed condition, receptive to a blood vessel
  • FIG. 3 is an illustration of the hemostat with the bladder expanded
  • FIG. 4 is a sectional view of the relaxed hemostat showing a blood vessel in an unconstricted condition
  • FIG. 5 is a view similar to FIG. 4 illustrating the expansion of the bladder to constrict the blood vessel
  • FIG. 6 is a side elevation of the hemostat.
  • the hemostat employs a housing 10 of a generally bell-shaped configuration.
  • the housing 10 has opposed front and back walls 12 and 14, which terminate, at their lower ends, to define an opening 16.
  • An extension 18 is formed integrally with the front wall 12 and terminates in a channelled jaw 20 which is spaced from and faces the opening 16.
  • the side of the jaw 20 opposite the extension 18 presents a reverted lip 22 opposite the edge of the back wall 14 but spaced therefrom to define a slot 24.
  • the blood vessel 25 is intended to be passed through the slot and be retained within the jaw 20.
  • the hemostat employs a bladder 26 which fits snugly within the housing and which has a facing portion 28 exposed through the opening 16.
  • the bladder 26 is in communication with a source of fluid under pressure by means of a lead-in tube 30 which is connected to the upper end of the bladder 26 and which protrudes upwardly through a hole 32 formed in the top of the housing.
  • the source of pressure may be a rubber syringe bulb 27, as shown in FIG. 1 or may consist of a manifold (not shown) to which a number of such lead-in tubes 30 and associated hemostats may be connected. Suitable valving arrangements may be provided to operate any or all of the hemostats connected to the manifold, as desired.
  • the bladder 26 is formed from a resilient, expandable, yet tough material such as silicon rubber or other physiologically inert material.
  • the housing 10, extension 18 and jaw 20 may be formed from rigid plastic or metal, provided that the material selected also is physiologically inert.
  • the bladder When the hemostat is in a relaxed, inoperative position, the bladder is unexpanded, as shown in FIGS. 2, 4, and 6, so that its exposed facing surface 28 is spaced from the bottom of the jaw 20 to enable the blood vessel 25 to pass through the slot as the lip 22 is slipped thereabout.
  • the pressurized fluid may be applied to the bladder 26 as shown in FIGS. 1, 3, and 5. Increasing the pressure within the bladder causes the facing portion 28 to expand downwardly toward the channel 20 and causes the retained blood vessel 25 to be pressed firmly into the channel 20 and cause its constriction.
  • the rigidity of the cuff I8 insures that expansion of the bladder 26 will constrict the blood vessel to the degree desired.
  • the jaw 20 is of a special construction which retards the blood vessel from slipping out of the channel, even when the bladder 26 is deflated and is not pressing the blood vessel 25 firmly to the channel of the jaw 20.
  • the bottom surface 34 of the channel is curved along its length to present a con vex surface to the facing surface 28 of the bladder 26, giving the jaw a saddle shape.
  • the facing surface 28 of bladder 26 also is provided with a slight convex contour and collaborates with the convex bottom surface 34 of the jaw 20 to provide a slight clearance 35 between the blood vessel 25 and the surface 28 of the bladder 26.
  • the clearance 35 is sufficient to preclude the blood vessel 25 from undesired pinching, yet it is not large enough to enable the blood vessel to slip easily out of the channel through the slot 24.
  • an upwardly protruding ridge 36 is formed at the bottom surface 34 of the channel 20, intermediate its ends.
  • the ridge 36 aids in maintaining the blood vessel in place within the channel while the bladder 26 is deflated and, additionally, is eflective to pinch the blood vessel 25 when the bladder is expanded, shown in FIG. 5, to insure complete constriction of the blood vessel.
  • each hemostat and its associated syringe or valve on the operating manifold may be color coded to enable rapid recognition thereof.
  • the hemostat may be operated by any pressurized fluid and is effective equally when actuated by air as well as by a fluid such as water.
  • a hemostat which occupies little space and which may be controlled, in its operation, from a remote location. Additionally, the hemostat is of a simple construction and may be attached to a blood vessel rapidly and accurately without requiring any further or additional time consuming manipulations. When connected to and operated by a small syringe bulb with the pinch clamp adjacent, as illustrated, it is easy to operate both the bulb and clamp with one hand. This arrangement is preferred because of its light weight and ease of operation.
  • a hemostat comprising a housing defined by at least two wall portions and having an open end situated at an edge of said wall portions,
  • one of said wall portions extending beyond said open end continuing as a curl over and in spaced relation to said open end and terminating in a reverted lip that extends toward said edge to form a channel, said reverted lip being spaced from said edge to define a slot therebetween thereby to enable insertion of a blood vessel into said channel through said slot,
  • said channel being curved in the longitudinal direction to present a convex surface to said open end and being was curiie'din the transverse direction to present a concave surface to said open end,
  • a resilient inflatable bladder carried by said housing with a part thereof situated at said open end and spaced from said channel, said part and said channel clamp when said bladder is inflated;

Abstract

A quickly attached and operated hemostat for controllably occluding a blood vessel comprises an inflatable bladder mounted in or on a housing which includes a rigid open channeled jaw against which the bladder may be expanded. The jaw is of a configuration preferably saddle shaped, rendering it openly receptive to a blood vessel.

Description

United States Patent Hakim 51 July 11,1972
1541 FLUID OPERATABLE HEMOSTAT [72] Inventor: Salomon Hakim, Carrera 13, No. 48-26,
Bogota, Colombia [22] Filed: May 26, 1969 [21] Appl. No.: 827,859
[52] 11.5. CI. ..128/325, 128/346 [51] Int, Cl........ 17/12, A61b 17/00 [58] FleldofSearch ..128/322, 325, 327, 346; 251/4,
[ 56] References Cited UNITED STATES PATENTS 3,538,917 11/1970 Selker ..l28/326 2,455,859 12/1948 Foley ..l28/327X 2,511,269 6/1950 Jones 1 23/327 2,533,924 12/1950 Foley 1 28/346 3,147,754 9/1964 Koessler 128/346 3,507,270 4/1970 Ferrier ..128/327 Pn'mary ExaminerChanning L. Pace Attorney-Kenway, Jenney & Hildreth, Townsend M. Gunn and John A. Lahive, Jr.
[ ABSTRACT A quickly attached and operated hemostat for controllably occluding a blood vessel comprises an inflatable bladder mounted in or on a housing which includes a rigid open channeled jaw against which the bladder may be expanded. The jaw is of a configuration preferably saddle shaped, rendering it openly receptive to a blood vessel.
2 Claims, 6 Drawing Figures FKTE'NTEDJULI I m2 INVENTOR.
SALOMON HAKIM ATTORNEYS FLUID OPERATABLE HEMOSTAT SUMMARY OF THE INVENTION In many surgical procedures it is necessary to occlude a blood vessel, which may be done either by suturing the vessel or by applying a hemostat. Some conditions however are not well treated by either technique. Suturing is accomplished by tying off the blood vessel and is relatively inflexible in situations where the degree of occlusion should be altered periodically. The use of a hemostat on the other hand, while flexible, involves clamping rather bulky hardware to the vessel, and requires support so as not to apply excessive strain to the vessel.
One particular situation where both occlusion techniques are inadequate is in the case of aneurism of a small vessel, particularly one in the brain which if ruptured could lead to a serious cerebral hemorrhage. Ideally a hemostat for controlling such a condition should be small and light in weight, quickly and easily attached to the vessel, and operable quickly, both to occlude the vessel and to relieve the occlusion prewure as the vessel should periodically be disoccluded in order to permit some blood flow to the area in order to prevent anoxia.
The present invention provides just such a hemostat. It con sists of a clamp arrangement, having a rigid jaw of channelled cross section, preferably oppositely curved in the longitudinal direction to present a saddle shape. An inflatable diaphragm or bladder is mounted opposite the channel and is arranged to be expanded toward the jaw to provide a readily and remotely controllable clamping action. The diaphragm is mounted to a housing including an extension which leads into the channelled jaw portion on one side only. The opposite side of the channel is open so that the vessel can be engaged simply by placing the hemostat around it with the vessel hooked, so to speak, in the channel and opposite the diaphragm. A tube leading from the diaphragm to a pressure source, such as a syringe bulb provides for the application of fluid to inflate or deflate the diaphragm.
In the preferred embodiment of the invention the housing and channelled jaw are unitary, the former being bell shaped with an extension from one side of the Opening which curves around to form the saddle shaped channel jaw. This is formed of a rigid plastic, e.g. an epoxy resin, or metal. The diaphragm is a balloon of silicone rubber mounted in the bell, with a tubular extension through a hole in the apex leading to a syringe bulb or other device for controlling the inflation of the balloon. The entire hemostat may be extremely small, e.g. 2 mm across at the jaw channel.
Further objects and advantages of my invention will be apparent from the following detailed description thereof with reference to the accompanying drawings wherein:
FIG. I is an illustration of an attached hemostat and a syringe bulb connected to the hemostat to effect its operation;
FIG. 2 is an illustration of the hemostat in a relaxed condition, receptive to a blood vessel;
FIG. 3 is an illustration of the hemostat with the bladder expanded;
FIG. 4 is a sectional view of the relaxed hemostat showing a blood vessel in an unconstricted condition;
FIG. 5 is a view similar to FIG. 4 illustrating the expansion of the bladder to constrict the blood vessel; and
FIG. 6 is a side elevation of the hemostat.
As shown in the figures, the hemostat employs a housing 10 of a generally bell-shaped configuration. The housing 10 has opposed front and back walls 12 and 14, which terminate, at their lower ends, to define an opening 16. An extension 18 is formed integrally with the front wall 12 and terminates in a channelled jaw 20 which is spaced from and faces the opening 16. The side of the jaw 20 opposite the extension 18 presents a reverted lip 22 opposite the edge of the back wall 14 but spaced therefrom to define a slot 24. The blood vessel 25 is intended to be passed through the slot and be retained within the jaw 20.
The hemostat employs a bladder 26 which fits snugly within the housing and which has a facing portion 28 exposed through the opening 16. The bladder 26 is in communication with a source of fluid under pressure by means of a lead-in tube 30 which is connected to the upper end of the bladder 26 and which protrudes upwardly through a hole 32 formed in the top of the housing. The source of pressure may be a rubber syringe bulb 27, as shown in FIG. 1 or may consist of a manifold (not shown) to which a number of such lead-in tubes 30 and associated hemostats may be connected. Suitable valving arrangements may be provided to operate any or all of the hemostats connected to the manifold, as desired. When used with a syringe bulb, it is convenient to provide a spring pinch clamp 37 on the lead in 30 for pressure control. The bladder 26 is formed from a resilient, expandable, yet tough material such as silicon rubber or other physiologically inert material. The housing 10, extension 18 and jaw 20 may be formed from rigid plastic or metal, provided that the material selected also is physiologically inert.
When the hemostat is in a relaxed, inoperative position, the bladder is unexpanded, as shown in FIGS. 2, 4, and 6, so that its exposed facing surface 28 is spaced from the bottom of the jaw 20 to enable the blood vessel 25 to pass through the slot as the lip 22 is slipped thereabout. Once the blood vessel 25 is disposed within the jaw 20 the pressurized fluid may be applied to the bladder 26 as shown in FIGS. 1, 3, and 5. Increasing the pressure within the bladder causes the facing portion 28 to expand downwardly toward the channel 20 and causes the retained blood vessel 25 to be pressed firmly into the channel 20 and cause its constriction. The rigidity of the cuff I8 insures that expansion of the bladder 26 will constrict the blood vessel to the degree desired.
The jaw 20 is of a special construction which retards the blood vessel from slipping out of the channel, even when the bladder 26 is deflated and is not pressing the blood vessel 25 firmly to the channel of the jaw 20. Thus, the bottom surface 34 of the channel is curved along its length to present a con vex surface to the facing surface 28 of the bladder 26, giving the jaw a saddle shape. The facing surface 28 of bladder 26 also is provided with a slight convex contour and collaborates with the convex bottom surface 34 of the jaw 20 to provide a slight clearance 35 between the blood vessel 25 and the surface 28 of the bladder 26. The clearance 35 is sufficient to preclude the blood vessel 25 from undesired pinching, yet it is not large enough to enable the blood vessel to slip easily out of the channel through the slot 24. Additionally, an upwardly protruding ridge 36 is formed at the bottom surface 34 of the channel 20, intermediate its ends. The ridge 36 aids in maintaining the blood vessel in place within the channel while the bladder 26 is deflated and, additionally, is eflective to pinch the blood vessel 25 when the bladder is expanded, shown in FIG. 5, to insure complete constriction of the blood vessel.
When a number of such hemostats are employed during a surgical operation, each hemostat and its associated syringe or valve on the operating manifold may be color coded to enable rapid recognition thereof.
The hemostat may be operated by any pressurized fluid and is effective equally when actuated by air as well as by a fluid such as water.
Thus, it will be seen that I have provided a hemostat which occupies little space and which may be controlled, in its operation, from a remote location. Additionally, the hemostat is of a simple construction and may be attached to a blood vessel rapidly and accurately without requiring any further or additional time consuming manipulations. When connected to and operated by a small syringe bulb with the pinch clamp adjacent, as illustrated, it is easy to operate both the bulb and clamp with one hand. This arrangement is preferred because of its light weight and ease of operation.
It should be understood that the foregoing description is intended merely to be illustrative of my invention and that other modifications and embodiments thereof will be apparent by those skilled in the art without departing from its spirit.
Having thus described my invention what [desire td claim k and secure by Letters Patent is:
l. A hemostat comprising a housing defined by at least two wall portions and having an open end situated at an edge of said wall portions,
one of said wall portions extending beyond said open end continuing as a curl over and in spaced relation to said open end and terminating in a reverted lip that extends toward said edge to form a channel, said reverted lip being spaced from said edge to define a slot therebetween thereby to enable insertion of a blood vessel into said channel through said slot,
said channel being curved in the longitudinal direction to present a convex surface to said open end and being was curiie'din the transverse direction to present a concave surface to said open end,
a resilient inflatable bladder carried by said housing with a part thereof situated at said open end and spaced from said channel, said part and said channel clamp when said bladder is inflated; and
cooperating as a toward said part of said bladder

Claims (2)

1. A hemostat comprising a housing defined by at least two wall portions and having an open end situated at an edge of said wall portions, one of said wall portions extending beyond said open end continuing as a curl over and in spaced relation to said open end and terminating in a reverted lip that extends toward said edge to form a channel, said reverted lip being spaced from said edge to define a slot therebetween thereby to enable insertion of a blood vessel into said channel through said slot, said channel being curved in the longitudinal direction to present a convex surface to said open end and being curved in the transverse direction to present a concave surface to said open end, a resilient inflatable bladder carried by said housing with a part thereof situated at said open end and spaced from said channel, said part and said channel cooperating as a clamp when said bladder is inflated; and means communicating said bladder with a source of fluid pressure to control the inflation of said bladder.
2. The hemostat defined by claim 1 wherein said channel is formed with a transverse ridge disposed within said channel and intermediate the ends thereof, said ridge protruding toward said part of said bladder.
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Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4586501A (en) * 1982-10-21 1986-05-06 Michel Claracq Device for partly occluding a vessel in particular the inferior vena cava and inherent component of this device
EP0200286A2 (en) * 1985-02-28 1986-11-05 Quotidian No. 100 Pty. Limited Control of blood flow
WO1987002570A1 (en) * 1985-11-02 1987-05-07 Karl Aigner Implantable catheter with container throttle
US4708140A (en) * 1986-05-08 1987-11-24 Baron Howard C Atraumatic vascular balloon clamp
US4800879A (en) * 1987-07-09 1989-01-31 Vladimir Golyakhovsky Disposable vascular occluder
US4828544A (en) * 1984-09-05 1989-05-09 Quotidian No. 100 Pty Limited Control of blood flow
US4863469A (en) * 1987-10-20 1989-09-05 Pmt Corporation Method and apparatus for expanding nerve tissue
US5026020A (en) * 1990-05-14 1991-06-25 Betush Frank A Miniature compound lever pinch valve/regulator
US5236437A (en) * 1992-07-14 1993-08-17 Wilk Peter J Surgical instrument assembly and associated technique
US5250074A (en) * 1992-07-14 1993-10-05 Wilk Peter J Surgical instrument assembly and associated technique
US5330498A (en) * 1991-12-17 1994-07-19 Hill John D Blood vessel occlusion trocar
US5593443A (en) * 1991-03-13 1997-01-14 Nph Ltd. Prosthetic anal sphincter
US5935103A (en) * 1991-12-17 1999-08-10 Heartport, Inc. Blood vessel occlusion device
WO2002067811A2 (en) * 2001-01-16 2002-09-06 Hyde Edward R Jr Prostheses and instrumentation for joint replacement and repair
US20040144937A1 (en) * 2002-12-04 2004-07-29 Tom Ball Flow-regulating device
US20060047337A1 (en) * 2004-08-27 2006-03-02 Brenneman Rodney A Device and method for establishing an artificial arterio-venous fistula
US20060129083A1 (en) * 2004-12-15 2006-06-15 Rox Medical, Inc. Method of treating COPD with artificial arterio-venous fistula and flow mediating systems
US20060183963A1 (en) * 2003-06-16 2006-08-17 Gabi Weizman Peri-arterial blood flow booster
US20060206123A1 (en) * 2004-08-27 2006-09-14 Rox Medical, Inc. Device and method for establishing an artificial arterio-venous fistula
US20070249985A1 (en) * 2004-08-27 2007-10-25 Rox Medical, Inc. Device and method for establishing an artificial arterio-venous fistula
US20090018385A1 (en) * 2007-06-28 2009-01-15 Antoine Trubiano Urethra pressure control valve to control incontinence
US20090062827A1 (en) * 2007-08-31 2009-03-05 Peter Meier Vacuum-based method for obstruction of uterine arteries to treat uterine fibroids
US20090192359A1 (en) * 2008-01-25 2009-07-30 Theodore Hale Flexible surgical retractor
US20090194716A1 (en) * 2008-02-01 2009-08-06 Sacmi Cooperativa Meccanici Imola Societa'cooperativa Device for regulating the flow of a liquid
USD608514S1 (en) 2007-05-03 2010-01-19 Johnsondiversey, Inc. Fluid reservoir
US20100130835A1 (en) * 2008-09-30 2010-05-27 Rox Medical, Inc. Methods for screening and treating patients with compromised cardiopulmonary function
USD618411S1 (en) 2007-05-03 2010-06-22 Diversey, Inc. Grip for a floor maintenance tool
US8034065B2 (en) * 2008-02-26 2011-10-11 Ethicon Endo-Surgery, Inc. Controlling pressure in adjustable restriction devices
US20130023734A1 (en) * 2010-03-29 2013-01-24 Ryo Okamura Introducer sheath assembly and method
US8387943B1 (en) * 2007-01-11 2013-03-05 Harley H. Mattheis Pinch valve
US8740767B2 (en) 2010-03-16 2014-06-03 Pelvalon, Inc. Intra-vaginal devices and methods for treating fecal incontinence
US9072578B2 (en) 2010-03-16 2015-07-07 Pelvalon, Inc. Intra-vaginal device for fecal incontinence
US9289278B2 (en) 2010-03-16 2016-03-22 Pelvalon, Inc. Intra-vaginal devices and methods for treating fecal incontinence
US9974635B2 (en) 2013-02-14 2018-05-22 Pelvalon, Inc. Intra-vaginal devices and methods for treating fecal incontinence
US9980813B2 (en) 2014-04-28 2018-05-29 Cook Medical Technologies Llc Selective fluid barrier valve device and method of treatment
US10039552B2 (en) 2014-10-28 2018-08-07 Cook Medical Technologies Llc Magnetically actuated gating devices, systems, kits, and methods
US10182823B2 (en) 2016-02-17 2019-01-22 Atricure, Inc. Inflatable atrial appendage occlusion apparatus and methods

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US2533924A (en) * 1948-06-28 1950-12-12 Frederic E B Foley Artificial sphincter
US2511269A (en) * 1949-05-23 1950-06-13 Norris V Jones Tourniquet
US3147754A (en) * 1961-04-17 1964-09-08 Walter R Koessler Device for controlling incontinence
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Cited By (83)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4586501A (en) * 1982-10-21 1986-05-06 Michel Claracq Device for partly occluding a vessel in particular the inferior vena cava and inherent component of this device
US4828544A (en) * 1984-09-05 1989-05-09 Quotidian No. 100 Pty Limited Control of blood flow
EP0200286A2 (en) * 1985-02-28 1986-11-05 Quotidian No. 100 Pty. Limited Control of blood flow
EP0200286A3 (en) * 1985-02-28 1987-01-14 Quotidian No. 100 Pty. Limited Control of blood flow
WO1987002570A1 (en) * 1985-11-02 1987-05-07 Karl Aigner Implantable catheter with container throttle
EP0228532A1 (en) * 1985-11-02 1987-07-15 Karl Dr. Aigner Implantable catheter with a vein clamp
JPS62502729A (en) * 1985-11-02 1987-10-22 アイグナ−・カ−ル implantable catheter
US4708140A (en) * 1986-05-08 1987-11-24 Baron Howard C Atraumatic vascular balloon clamp
US4800879A (en) * 1987-07-09 1989-01-31 Vladimir Golyakhovsky Disposable vascular occluder
US4863469A (en) * 1987-10-20 1989-09-05 Pmt Corporation Method and apparatus for expanding nerve tissue
US5026020A (en) * 1990-05-14 1991-06-25 Betush Frank A Miniature compound lever pinch valve/regulator
US5593443A (en) * 1991-03-13 1997-01-14 Nph Ltd. Prosthetic anal sphincter
US5935103A (en) * 1991-12-17 1999-08-10 Heartport, Inc. Blood vessel occlusion device
US5499996A (en) * 1991-12-17 1996-03-19 Hill; John D. Blood vessel occlusion trocar
US5522838A (en) * 1991-12-17 1996-06-04 Hill; John D. Blood vessel occlusion trocar
US5556412A (en) * 1991-12-17 1996-09-17 Hill; John D. Blood vessel occlusion trocar
US5330498A (en) * 1991-12-17 1994-07-19 Hill John D Blood vessel occlusion trocar
US5941894A (en) * 1991-12-17 1999-08-24 Heartport, Inc. Blood vessel occlusion device
US5997505A (en) * 1991-12-17 1999-12-07 Heartport, Inc. Method of cannulating an ascending aorta using a blood vessel occlusion device
US6224619B1 (en) 1991-12-17 2001-05-01 Heartport, Inc. Blood vessel occlusion trocar having size and shape varying insertion body
US5236437A (en) * 1992-07-14 1993-08-17 Wilk Peter J Surgical instrument assembly and associated technique
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