US3042021A - Bypass type insert plug for body passageway - Google Patents

Bypass type insert plug for body passageway Download PDF

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US3042021A
US3042021A US776357A US77635758A US3042021A US 3042021 A US3042021 A US 3042021A US 776357 A US776357 A US 776357A US 77635758 A US77635758 A US 77635758A US 3042021 A US3042021 A US 3042021A
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plug
vas deferens
passageway
body passageway
insert plug
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US776357A
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Read Thane
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F6/00Contraceptive devices; Pessaries; Applicators therefor
    • A61F6/20Vas deferens occluders; Fallopian occluders
    • A61F6/22Vas deferens occluders; Fallopian occluders implantable in tubes
    • A61F6/24Vas deferens occluders; Fallopian occluders implantable in tubes characterised by valve means

Definitions

  • the present invention generally relates to a plug for a body passageway and more particularly to such a plug which will not only stop the flow through such a passageway but will also bypass the material normally flowing in the passageway to another area with the device being particularly adapted for insertion into the vas deferens which is the passageway inter-connecting the testicles with the ejaculatory duct for delivering sperm cells to the ejaculatory duct for mixing with the semen.
  • the male genital organs include a passageway leading from the testicles to the ejaculatory canal or duct and which is known as the vas deferens.
  • the sperm cells passing through the vas deferens mix with the semen and may subsequently be discharged. in some instances, it is desirable to prevent the how of sperm into the semen.
  • the vas deferens is a relatively thick wall passage having an internal diameter of approximately of an inch and located closely adjacent to the internal surface of the skin of the scrotum. This has been accomplished in certain instances by completely closing or tying off the vas deferens.
  • Another important object of the present invention is provide a device in accordance with the preceding object in which the insertion and removal of the same is extremely easy to accomplish although it necessitates the puncturing of the skin of the scrotum and also the vas deferens by way of a puncture wound or by use of a scalpel or other surgical instrument. It is preferable that the insertion be made by way of a puncture wound since a puncture wound has less tendency to produce an excessive amount of scar tissue when healing.
  • Another important feature of the present invention is to provide an insert plug in accordance with the preceding object which is exceedingly simple in construction, non-toxic, easy to insert, effective for its particular purposes and relatively inexpensive to manufacture.
  • FIGURE 1 is a sectional view of the insert plug and the vas deferens passage illustrating the relation of the same to the skin of the scrotum;
  • FIGURE 2 is a sectional view similar to FIGURE 1 but illustrating the manner in which the plug is inserted;
  • FIGURE 3 is a detailed sectional view taken substantially upon a plane passing along section line 33 of FIGURE 1 illustrating further structural details of the plug;
  • FIGURE 4 is a perspective view of the plug.
  • the numeral 10 generally designates the insert plug of the present invention which includes a generally cylindrical body 12 having one end thereof rounded and pointed as indicated by the numeral 14 and having a cylindrical passageway 16 extending inwardly from the other end thereof.
  • a tubular cylindrical member 18 Intermediate the ends and adjacent the center of the cylindrical member 12 is a tubular cylindrical member 18 extending in perpendicular relation to the longitudinal axis of the cylindrical member 12 and having a passage 25? therein communicating with the passageway 16 as clearly illustrated in FIGURES -l and 2.
  • the plug ii) is inserted into the vas deferens passageway 2?. with the cylindrical member 18 extending through the wall 24 thereof.
  • the cylindrical passageway 16 faces the direction of flow or faces the gland which produces the sperm while the pointed closed end 14 faces away from the source of flow and generally faces the ejaculatory duct.
  • the cylindrical passageway 20 communicates the passageway 22 with the space 26 between the vas deferens wall 24 and the inner surface of the skin of the scrotum.
  • a cylindrical handle 36 which is inserted into the cylindrical member 18 and thus enabling the plug 10 to be inserted through openings 32 and 34 formed in the skin 23 and the wall 24 respectively thus permitting the rounded pointed end 14 to be positioned away from the direction of flow and the cylindrical passage 16 facing the direction from which the sperm cells flow.
  • the passageway 22 is of small dimension being generally in the neighborhood of an inch in diameter thus enabling the plug 10 to be of an extremely small size so that a very small opening 32 or 34 is necessary.
  • the wall 24' of the vas deferens will close around the Wall of the cylindrical member 18 and also the wall of the cylindrical member 12 thus sealing the plug to the vas deferens 24. Since there is no restriction to the flow of sperm, there will be no tendency for such flow to reohannel itself around the plug.
  • the plug may be constructed of any suitable material used for insertions into the human body which are non-toxic and which are constructed in such a manner that they may be located by a fluoroscope or similar device.
  • the plug itself may be used as a puncturing instrument so that when the vas deferens is held in proper relation to the skin, the plug may be inserted directly into the vas deferens thus reducing the time required for insertion of the plug.
  • a needle or similar puncture instrument be used first to puncture the skin and vas deferens.
  • the handle 3% may be as long as desired for controlling insertion of the plug. Due to the normal functioning of the glands which produce the sperm cells, there will be no damage to such glands. Further, the plug may be removed at any time by reversing the installation procedure with the vas deferens then operating in the usual manner for conducting the sperm cells to the ejaculatory canal.
  • the method of bypassing sperm flow from the vas deferens body passageway into the interior of the scrotum between the sperm secreting gland to which one end of the vas deferens is communicated and the ejaculatory duct to which the other end of the vas deferens is communicated consisting of the steps of making an incision in the wall of the scrotum and in the wall of the vas deferens, blocking off the vas deferens between the incision and ejaculatory duct, and maintaining communication through the incision in the wall of the vas References Cited in the tile of this patent UNITED STATES PATENTS Schnee Nov. 25, 1947 OTHER REFERENCES Henry B. 'Pancoast Co., Pipe Failing and Awning- Frame Fittings, Catalogue E, received in Patent Ofiice October 23, 1911, page 10.

Description

July 3, 1962 1-. READ 3,042,021
' BYPASS TYPE INSERT PLUG FOR BODY PASSAGEWAY Filed Nov. 25, 1958 I Ff l2 Thane Read 1N VEN TOR.
a062 BY M My United States Patent 3,042,021 BYPASS TYPE ENSERT PLUG FUR RUDY PASAGEWAY Thane Read, Rte. 1, lion 470, Tempe, Ariz. Filed Nov. 25, 1953, Ser. No. 776,357 1 Claim. (Cl. 128--1) The present invention generally relates to a plug for a body passageway and more particularly to such a plug which will not only stop the flow through such a passageway but will also bypass the material normally flowing in the passageway to another area with the device being particularly adapted for insertion into the vas deferens which is the passageway inter-connecting the testicles with the ejaculatory duct for delivering sperm cells to the ejaculatory duct for mixing with the semen.
The male genital organs include a passageway leading from the testicles to the ejaculatory canal or duct and which is known as the vas deferens. The sperm cells passing through the vas deferens mix with the semen and may subsequently be discharged. in some instances, it is desirable to prevent the how of sperm into the semen. The vas deferens is a relatively thick wall passage having an internal diameter of approximately of an inch and located closely adjacent to the internal surface of the skin of the scrotum. This has been accomplished in certain instances by completely closing or tying off the vas deferens. However, this is objectionable due to the tendency of the gland which produces the sperm to cease functioning in the event there is no further demand for the same and that which has been produced backs into the glands. Therefore, it is the primary object of the present invention to provide an insert plug for insertion into the vas deferens which will bypass the sperm normally passing through the vas deferens into the interior of the scrotum which will not be detrimental to the individual involved due to the minute quantity of material discharged into the scrotum and due to the tendency of the body to absorb such excess liquids.
Another important object of the present invention is provide a device in accordance with the preceding object in which the insertion and removal of the same is extremely easy to accomplish although it necessitates the puncturing of the skin of the scrotum and also the vas deferens by way of a puncture wound or by use of a scalpel or other surgical instrument. It is preferable that the insertion be made by way of a puncture wound since a puncture wound has less tendency to produce an excessive amount of scar tissue when healing.
Another important feature of the present invention is to provide an insert plug in accordance with the preceding object which is exceedingly simple in construction, non-toxic, easy to insert, effective for its particular purposes and relatively inexpensive to manufacture.
These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawing forming a part hereof, wherein like numerals refer to like parts throughout, and in which:
FIGURE 1 is a sectional view of the insert plug and the vas deferens passage illustrating the relation of the same to the skin of the scrotum;
FIGURE 2 is a sectional view similar to FIGURE 1 but illustrating the manner in which the plug is inserted;
FIGURE 3 is a detailed sectional view taken substantially upon a plane passing along section line 33 of FIGURE 1 illustrating further structural details of the plug; and
FIGURE 4 is a perspective view of the plug.
Referring now specifically to the drawing, the numeral 10 generally designates the insert plug of the present invention which includes a generally cylindrical body 12 having one end thereof rounded and pointed as indicated by the numeral 14 and having a cylindrical passageway 16 extending inwardly from the other end thereof. Intermediate the ends and adjacent the center of the cylindrical member 12 is a tubular cylindrical member 18 extending in perpendicular relation to the longitudinal axis of the cylindrical member 12 and having a passage 25? therein communicating with the passageway 16 as clearly illustrated in FIGURES -l and 2.
The plug ii) is inserted into the vas deferens passageway 2?. with the cylindrical member 18 extending through the wall 24 thereof. The cylindrical passageway 16 faces the direction of flow or faces the gland which produces the sperm while the pointed closed end 14 faces away from the source of flow and generally faces the ejaculatory duct. The cylindrical passageway 20 communicates the passageway 22 with the space 26 between the vas deferens wall 24 and the inner surface of the skin of the scrotum. Thus, the sperm passing through the vas deferens 22 will be discharged through the passageway 16 and passageway 2i) and into the area 26 on the interior of the scrotum wherein the secretions will be absorbed back into the body.
In inserting the plug, there is provided a cylindrical handle 36 which is inserted into the cylindrical member 18 and thus enabling the plug 10 to be inserted through openings 32 and 34 formed in the skin 23 and the wall 24 respectively thus permitting the rounded pointed end 14 to be positioned away from the direction of flow and the cylindrical passage 16 facing the direction from which the sperm cells flow.
As stated previously, the passageway 22 is of small dimension being generally in the neighborhood of an inch in diameter thus enabling the plug 10 to be of an extremely small size so that a very small opening 32 or 34 is necessary. The wall 24' of the vas deferens will close around the Wall of the cylindrical member 18 and also the wall of the cylindrical member 12 thus sealing the plug to the vas deferens 24. Since there is no restriction to the flow of sperm, there will be no tendency for such flow to reohannel itself around the plug. The plug may be constructed of any suitable material used for insertions into the human body which are non-toxic and which are constructed in such a manner that they may be located by a fluoroscope or similar device.
By sharpening the rounded end 14 to a point, it is possible that the plug itself may be used as a puncturing instrument so that when the vas deferens is held in proper relation to the skin, the plug may be inserted directly into the vas deferens thus reducing the time required for insertion of the plug. However, it is preferable that a needle or similar puncture instrument be used first to puncture the skin and vas deferens. Also the handle 3% may be as long as desired for controlling insertion of the plug. Due to the normal functioning of the glands which produce the sperm cells, there will be no damage to such glands. Further, the plug may be removed at any time by reversing the installation procedure with the vas deferens then operating in the usual manner for conducting the sperm cells to the ejaculatory canal.
The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly, all suitable modifications and 3 equivalents may be resorted to, falling within the scope of the invention as claimed.
What is claimed as new is as follows:
The method of bypassing sperm flow from the vas deferens body passageway into the interior of the scrotum between the sperm secreting gland to which one end of the vas deferens is communicated and the ejaculatory duct to which the other end of the vas deferens is communicated, said method consisting of the steps of making an incision in the wall of the scrotum and in the wall of the vas deferens, blocking off the vas deferens between the incision and ejaculatory duct, and maintaining communication through the incision in the wall of the vas References Cited in the tile of this patent UNITED STATES PATENTS Schnee Nov. 25, 1947 OTHER REFERENCES Henry B. 'Pancoast Co., Pipe Failing and Awning- Frame Fittings, Catalogue E, received in Patent Ofiice October 23, 1911, page 10.
US776357A 1958-11-25 1958-11-25 Bypass type insert plug for body passageway Expired - Lifetime US3042021A (en)

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Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3422813A (en) * 1965-06-21 1969-01-21 Dow Corning Method for sterilization of males
US3463141A (en) * 1967-05-15 1969-08-26 Casimir Mozolf Male contraceptive
US3589355A (en) * 1969-09-12 1971-06-29 Hee Young Lee Method for achieving reversible male sterilization
US3648683A (en) * 1970-06-29 1972-03-14 Nathan Brodie Reversible intra-vas device
US3680542A (en) * 1970-05-11 1972-08-01 Hugo S Cimber Device for occlusion of an oviduct
US3687129A (en) * 1970-10-02 1972-08-29 Abcor Inc Contraceptive device and method of employing same
US3704704A (en) * 1970-10-12 1972-12-05 Ramon L Gonzales Birth control valve
US3721233A (en) * 1970-10-30 1973-03-20 W Montgomery T-shaped tracheal stent
US3742933A (en) * 1971-06-21 1973-07-03 Investors In Ventures Inc Devices for controlling fluid flow in living creatures
US3815578A (en) * 1973-05-11 1974-06-11 Investors In Ventures Inc Method of inserting an implant into a portion of a tubular organ whose mucous lining has been partially removed
USRE29345E (en) * 1973-02-26 1977-08-09 The Franklin Institute Method and apparatus for non-surgical, reversible sterilization of females
US4142516A (en) * 1976-05-11 1979-03-06 Adair Edwin Lloyd Urethral contraception device and method of applying same
US4560374A (en) * 1983-10-17 1985-12-24 Hammerslag Julius G Method for repairing stenotic vessels
US5107828A (en) * 1985-05-21 1992-04-28 Walter Koss Tracheostoma closure device
US5425708A (en) * 1991-12-13 1995-06-20 Nissho Corporation Catheter with an aorta-occluding balloon
US5443497A (en) * 1993-11-22 1995-08-22 The Johns Hopkins University Percutaneous prosthetic by-pass graft and method of use
WO1997027898A1 (en) 1996-02-02 1997-08-07 Transvascular, Inc. Methods and apparatus for connecting openings formed in adjacent blood vessels or other anatomical structures
US5755682A (en) * 1996-08-13 1998-05-26 Heartstent Corporation Method and apparatus for performing coronary artery bypass surgery
WO1999025273A1 (en) 1997-11-14 1999-05-27 Transvascular, Inc. Devices for forming and/or maintaining connections between adjacent anatomical conduits
US6019788A (en) * 1996-11-08 2000-02-01 Gore Enterprise Holdings, Inc. Vascular shunt graft and junction for same
WO2000015275A3 (en) * 1998-09-10 2000-08-10 Percardia Inc Body fluid shunt device and method of use
US6196230B1 (en) 1998-09-10 2001-03-06 Percardia, Inc. Stent delivery system and method of use
US6231587B1 (en) 1995-10-13 2001-05-15 Transvascular, Inc. Devices for connecting anatomical conduits such as vascular structures
US20020123786A1 (en) * 2001-03-02 2002-09-05 Ventrica, Inc. Methods and devices for bypassing an obstructed target vessel by placing the vessel in communication with a heart chamber containing blood
US6517558B2 (en) 1999-01-15 2003-02-11 Ventrica, Inc. Methods and devices for forming vascular anastomoses
US6635214B2 (en) 1999-09-10 2003-10-21 Ventrica, Inc. Manufacturing conduits for use in placing a target vessel in fluid communication with a source of blood
US20040077987A1 (en) * 1998-02-13 2004-04-22 Ventrica, Inc., Corporation Of Delaware Delivering a conduit into a heart wall to place a coronary vessel in communication with a heart chamber and removing tissue from the vessel or heart wall to facilitate such communication
US20040113306A1 (en) * 1999-05-19 2004-06-17 Rapacki Alan R Manufacturing conduits for use in placing a target vessel in fluid communication with a source of blood
US6808498B2 (en) 1998-02-13 2004-10-26 Ventrica, Inc. Placing a guide member into a heart chamber through a coronary vessel and delivering devices for placing the coronary vessel in communication with the heart chamber
US7025773B2 (en) 1999-01-15 2006-04-11 Medtronic, Inc. Methods and devices for placing a conduit in fluid communication with a target vessel
US7578828B2 (en) 1999-01-15 2009-08-25 Medtronic, Inc. Methods and devices for placing a conduit in fluid communication with a target vessel
US8512360B2 (en) 1998-02-13 2013-08-20 Medtronic, Inc. Conduits for use in placing a target vessel in fluid communication with source of blood

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2431587A (en) * 1945-02-19 1947-11-25 Charles F Schnee Cannula button for surgical operations and method of use

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2431587A (en) * 1945-02-19 1947-11-25 Charles F Schnee Cannula button for surgical operations and method of use

Cited By (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3422813A (en) * 1965-06-21 1969-01-21 Dow Corning Method for sterilization of males
US3463141A (en) * 1967-05-15 1969-08-26 Casimir Mozolf Male contraceptive
US3589355A (en) * 1969-09-12 1971-06-29 Hee Young Lee Method for achieving reversible male sterilization
US3680542A (en) * 1970-05-11 1972-08-01 Hugo S Cimber Device for occlusion of an oviduct
US3648683A (en) * 1970-06-29 1972-03-14 Nathan Brodie Reversible intra-vas device
US3687129A (en) * 1970-10-02 1972-08-29 Abcor Inc Contraceptive device and method of employing same
US3704704A (en) * 1970-10-12 1972-12-05 Ramon L Gonzales Birth control valve
US3721233A (en) * 1970-10-30 1973-03-20 W Montgomery T-shaped tracheal stent
US3742933A (en) * 1971-06-21 1973-07-03 Investors In Ventures Inc Devices for controlling fluid flow in living creatures
USRE29345E (en) * 1973-02-26 1977-08-09 The Franklin Institute Method and apparatus for non-surgical, reversible sterilization of females
US3815578A (en) * 1973-05-11 1974-06-11 Investors In Ventures Inc Method of inserting an implant into a portion of a tubular organ whose mucous lining has been partially removed
US4142516A (en) * 1976-05-11 1979-03-06 Adair Edwin Lloyd Urethral contraception device and method of applying same
US4560374A (en) * 1983-10-17 1985-12-24 Hammerslag Julius G Method for repairing stenotic vessels
US5107828A (en) * 1985-05-21 1992-04-28 Walter Koss Tracheostoma closure device
US5425708A (en) * 1991-12-13 1995-06-20 Nissho Corporation Catheter with an aorta-occluding balloon
US5443497A (en) * 1993-11-22 1995-08-22 The Johns Hopkins University Percutaneous prosthetic by-pass graft and method of use
US6231587B1 (en) 1995-10-13 2001-05-15 Transvascular, Inc. Devices for connecting anatomical conduits such as vascular structures
WO1997027898A1 (en) 1996-02-02 1997-08-07 Transvascular, Inc. Methods and apparatus for connecting openings formed in adjacent blood vessels or other anatomical structures
US6616675B1 (en) 1996-02-02 2003-09-09 Transvascular, Inc. Methods and apparatus for connecting openings formed in adjacent blood vessels or other anatomical structures
US6350248B1 (en) 1996-08-13 2002-02-26 Heartstent Corporation Expandable myocardial implant
US20050228334A1 (en) * 1996-08-13 2005-10-13 Percardia, Inc. Method to deliver blood from a heart chamber to vessel
US6093166A (en) * 1996-08-13 2000-07-25 Heartstent, Llc Coronary bypass implant
US20060155239A1 (en) * 1996-08-13 2006-07-13 Percardia, Inc. Method to deliver blood from a heart chamber to vessel
US6123682A (en) * 1996-08-13 2000-09-26 Heartstent Corporation Closed chest coronary bypass
US6929011B2 (en) 1996-08-13 2005-08-16 Percardia, Inc. Method to deliver blood from a heart chamber to a vessel
US5944019A (en) * 1996-08-13 1999-08-31 Heartstent Corporation Closed chest coronary bypass
US6913021B2 (en) 1996-08-13 2005-07-05 Percardia, Inc. Method for revascularizing a coronary vessel
US6361519B1 (en) 1996-08-13 2002-03-26 Heartstent Corporation Mesh tip myocardial implant
US20040122347A1 (en) * 1996-08-13 2004-06-24 Percardia, Inc. Method and apparatus for revascularizing a coronary vessel with an implant having a tapered myocardial leg
US20040077990A1 (en) * 1996-08-13 2004-04-22 Heartstent Corporation Method and apparatus for revascularizing a coronary vessel with an implant having a tapered myocardial leg
US6454794B1 (en) 1996-08-13 2002-09-24 Heartstent Corporation Coronary bypass implant
US20040073157A1 (en) * 1996-08-13 2004-04-15 Heartstent Corporation Method and apparatus for performing coronary artery bypass surgery
US5755682A (en) * 1996-08-13 1998-05-26 Heartstent Corporation Method and apparatus for performing coronary artery bypass surgery
US6701932B2 (en) 1996-08-13 2004-03-09 Percardia, Inc. Method and apparatus for revascularizing a coronary vessel with an implant having a tapered myocardial leg
EP1312320A3 (en) * 1996-08-13 2004-01-02 Heartstent Corporation Method and apparatus for performing coronory artery bypass surgery
US6019788A (en) * 1996-11-08 2000-02-01 Gore Enterprise Holdings, Inc. Vascular shunt graft and junction for same
WO1999025273A1 (en) 1997-11-14 1999-05-27 Transvascular, Inc. Devices for forming and/or maintaining connections between adjacent anatomical conduits
US8512360B2 (en) 1998-02-13 2013-08-20 Medtronic, Inc. Conduits for use in placing a target vessel in fluid communication with source of blood
US20040077987A1 (en) * 1998-02-13 2004-04-22 Ventrica, Inc., Corporation Of Delaware Delivering a conduit into a heart wall to place a coronary vessel in communication with a heart chamber and removing tissue from the vessel or heart wall to facilitate such communication
US7993356B2 (en) 1998-02-13 2011-08-09 Medtronic, Inc. Delivering a conduit into a heart wall to place a coronary vessel in communication with a heart chamber and removing tissue from the vessel or heart wall to facilitate such communication
US7214234B2 (en) 1998-02-13 2007-05-08 Medtronic, Inc. Delivering a conduit into a heart wall to place a coronary vessel in communication with a heart chamber and removing tissue from the vessel or heart wall to facilitate such communication
US6808498B2 (en) 1998-02-13 2004-10-26 Ventrica, Inc. Placing a guide member into a heart chamber through a coronary vessel and delivering devices for placing the coronary vessel in communication with the heart chamber
US6196230B1 (en) 1998-09-10 2001-03-06 Percardia, Inc. Stent delivery system and method of use
US6409751B1 (en) 1998-09-10 2002-06-25 Percardia, Inc. Stent delivery system and method of use
WO2000015275A3 (en) * 1998-09-10 2000-08-10 Percardia Inc Body fluid shunt device and method of use
US7025773B2 (en) 1999-01-15 2006-04-11 Medtronic, Inc. Methods and devices for placing a conduit in fluid communication with a target vessel
US7578828B2 (en) 1999-01-15 2009-08-25 Medtronic, Inc. Methods and devices for placing a conduit in fluid communication with a target vessel
US6517558B2 (en) 1999-01-15 2003-02-11 Ventrica, Inc. Methods and devices for forming vascular anastomoses
US20040113306A1 (en) * 1999-05-19 2004-06-17 Rapacki Alan R Manufacturing conduits for use in placing a target vessel in fluid communication with a source of blood
US7285235B2 (en) * 1999-05-19 2007-10-23 Medtronic, Inc. Manufacturing conduits for use in placing a target vessel in fluid communication with a source of blood
US6635214B2 (en) 1999-09-10 2003-10-21 Ventrica, Inc. Manufacturing conduits for use in placing a target vessel in fluid communication with a source of blood
US20020123786A1 (en) * 2001-03-02 2002-09-05 Ventrica, Inc. Methods and devices for bypassing an obstructed target vessel by placing the vessel in communication with a heart chamber containing blood

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