US5713859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implantable vascular device
Assignee: Vasca Inc
•
Filing: 1996-04-18
•
Granted: 1998-02-03
•
Expires: 2016-04-18
Abstract
Abstract An implantable device grafted directly to vascular structures for high volume blood and/or fluid infusion and/or removal for such purpose as hemodialysis, apheresis, exchange transfusion, or large volume fluid infusion. The device is also adaptable to intermittent access to the venous or arterial circulations for purpose of blood sampling or giving medications. The device is comprised of an implantable fluid chamber connected to a cannula or shunt segment which is then grafted directly to the vascular structure (e.g. artery or vein) using a sewable cuff located at the vascular end of the cannula or shunt segment. The vascular end of the device employs a valve which is directly adjacent to the vascular structure after grafting, in order to prevent reflux of blood and subsequent washout of anticoagulant during periods when the device is not in use. The device is accessed percutaneously with a needle or needle-introduced catheter and is filled with anti-coagulant prior to needle withdrawal to prevent thrombosis.
Inventors
- 👤 Charles David Finch, Jr.
- 👤 Hendrik Klaas Kuiper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:03
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61F2/064; A61M; A61M39/00; A61M39/02; A61M39/0208; A61M2039/0211; A61M2039/0223; Y; Y10; Y10S; Y10S604/00; Y10S604/905; Y10S623/00; Y10S623/902; Y10S623/903
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
71 words
A method for performing extracorporeal blood treatment, said method comprising: percutaneously attaching a first catheter to a first subcutaneously implanted port, wherein said first port is connected to an artery by a cannula; percutaneously attaching a second catheter to a second subcutaneously implanted port, wherein said second port is connected to a vein by a cannula; and circulating blood from the first catheter through an extracorporeal circuit to the second catheter.
Claim 2
Independent Claim
71 words
A method for performing extracorporeal blood treatment, said method comprising: percutaneously attaching a first catheter to a first subcutaneously implanted port, wherein said first port is connected to an artery by a cannula; percutaneously attaching a second catheter to a second subcutaneously implanted port, wherein said second port is connected to a vein by a cannula; and circulating blood from the first catheter through an extracorporeal circuit to the second catheter.
Claim 3
Dependent Claim
22 words
A method as in claim 1, wherein at least the first catheter is accessed by penetrating a needle or a needle-introduced catheter.
Claim 4
Dependent Claim
24 words
A method as in claim 2, wherein the port comprises a penetrable membrane and the needle or needle-introduced catheter is penetrated through the membrane.
Claim 5
Dependent Claim
22 words
A method as in claim 1, wherein the extracorporeal circuit is a hemodialysis circuit an apheresis circuit, or an exchange transfusion circuit.
Claim 6
Dependent Claim
21 words
A method as in claim 1, further comprising stopping circulation and filling at least the arterial cannula with an anti-coagulant fluid.
Claim 7
Dependent Claim
24 words
A method as in claim 5, wherein the anti-coagulant fluid is maintained within the cannula by a valve disposed near the distal end thereof.
Claim 8
Independent Claim
114 words
A method for implanting an arterial port and a venous port to establish connections for an extracorporeal blood treatment circuit, said method comprising: surgically implanting a first port capable of percutaneously receiving attachment of a first catheter; surgically attaching one end of a first cannula to an artery, wherein the other end of the cannula is attached to the first port; surgically implanting a second port capable of percutaneously receiving attachment of a second cannula; connecting one end of a second cannula to a vein, wherein the other end of the second cannula is attached to the second port; and surgically closing the sites at which the ports and the cannulas have been implanted.
Claim 9
Independent Claim
114 words
A method for implanting an arterial port and a venous port to establish connections for an extracorporeal blood treatment circuit, said method comprising: surgically implanting a first port capable of percutaneously receiving attachment of a first catheter; surgically attaching one end of a first cannula to an artery, wherein the other end of the cannula is attached to the first port; surgically implanting a second port capable of percutaneously receiving attachment of a second cannula; connecting one end of a second cannula to a vein, wherein the other end of the second cannula is attached to the second port; and surgically closing the sites at which the ports and the cannulas have been implanted.
Claim 10
Dependent Claim
22 words
A method as in claim 7, wherein the first cannula is attached to the artery without substantial intrusion into the arterial lumen.
Claim 11
Dependent Claim
25 words
A method as in claim 8, wherein the one end of the first catheter is attached to the artery by grafting in an end-to-side manner.
Claim 12
Dependent Claim
33 words
A method as in claim 7, wherein the first cannula includes a valve near its arterial connection to inhibit reflux of blood when the blood is not being drawn through the first port.
Claim 13
Dependent Claim
18 words
A method as in claim 10, wherein the arterial and venous connections are disposed at anatomically remote sites.
Claim 14
Independent Claim
89 words
A method for implanting an arterial port, said method comprising: surgically implanting a port capable of percutaneously receiving attachment of a catheter; surgically attaching one end of a cannula to an artery without substantial intrusion into the arterial lumen, wherein the other end of the cannula is attached to the port and the one end has a valve to inhibit blood reflux into the cannula in the absence of blood flow through the port; and surgically closing the sites at which the port and the cannula have been implanted.
Claim 15
Independent Claim
89 words
A method for implanting an arterial port, said method comprising: surgically implanting a port capable of percutaneously receiving attachment of a catheter; surgically attaching one end of a cannula to an artery without substantial intrusion into the arterial lumen, wherein the other end of the cannula is attached to the port and the one end has a valve to inhibit blood reflux into the cannula in the absence of blood flow through the port; and surgically closing the sites at which the port and the cannula have been implanted.
Claim 16
Dependent Claim
24 words
A method as in claim 12, wherein the one end of the cannula is attached to the artery by suturing in an end-to-side anastomosis.
Claim 17
Dependent Claim
21 words
A method as in claim 12, wherein the valve is a slit valve extending across the cannnula near its distal end.
Claim 18
Independent Claim
89 words
A method for administering medication into an artery, said method comprising; percutaneously attaching a needle or needle-introduced catheter to a subcutaneously implanted port, wherein said port is connected to the artery by a cannula having a valve near its distal connection to said artery to inhibit blood reflux when medication is not being administered therethrough and wherein the cannula is connected to the artery without substantial intrusion into the arterial lumen; and infusing a fluid medication through the needle or needle-introduced catheter into the port and to the artery.
Claim 19
Independent Claim
89 words
A method for administering medication into an artery, said method comprising; percutaneously attaching a needle or needle-introduced catheter to a subcutaneously implanted port, wherein said port is connected to the artery by a cannula having a valve near its distal connection to said artery to inhibit blood reflux when medication is not being administered therethrough and wherein the cannula is connected to the artery without substantial intrusion into the arterial lumen; and infusing a fluid medication through the needle or needle-introduced catheter into the port and to the artery.
Claim 20
Dependent Claim
21 words
A method as in claim 15, wherein the valve is a slit valve extending across the cannula near the distal end.
Claim 21
Dependent Claim
22 words
A method as in claim 16, further comprising filling the cannula with an anti-coagulant fluid when medication is not being introduced therethrough.
References Cited (Backward Citations)
US274447A
Cited
GB228532A
Cited
US3331371A
Cited
US3699956A
Cited
US3888249A
Cited
US4108173A
Cited
US4428364A
Cited
US4657536A
Cited
US4256102A
Cited
US4496350A
Cited
US4484912A
Cited
US4405305A
Cited
US4400169A
Cited
US4417888A
Cited
US4705501A
Cited
US4638803A
Cited
US4549879A
Cited
US4671796A
Cited
US4701166A
Cited
US4543088A
Cited
US4634422A
Cited
US4692146A
Cited
US4759752A
Cited
US4673394A
Cited
US4685905A
Cited
US4695273A
Cited
US4802885A
Cited
US4704103A
Cited
US4840190A
Cited
US4772270A
Cited
US4846806A
Cited
US4892518A
Cited
US5030210A
Cited
US4857053A
Cited
US5290263A
Cited
US5102389A
Cited
US4973319A
Cited
US5041098A
Cited
US5167638A
Cited
US5324518A
Cited
US5100392A
Cited
US5176653A
Cited
US5137529A
Cited
US5053013A
Cited
US5057084A
Cited
US5350360A
Cited
US5263930A
Cited
US5180365A
Cited
US5176627A
Cited
US5156600A
Cited
US5090954A
Cited
US5112301A
Cited
US5360407A
Cited
US5399168A
Cited
US5318545A
Cited
US5306255A
Cited
US5224938A
Cited
US5336194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-02-02 | 2001-08-04 | 2002-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-02-02 | 2005-08-04 | 2006-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-02-02 | 2009-08-04 | 2010-02-03 | $7700.00 | Window Closed / Lapsed |