Patent US4501263A successfully refreshed from Google Patents.
US4501263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for reducing hypertension of a liver
Assignee: Individual
•
Filing: 1982-03-31
•
Granted: 1985-02-26
•
Expires: 2002-03-31
Abstract
Abstract In an organism having a vascular system, a device and method for diverting blood flow from one blood vessel to another, such as from the hepatic artery to the portal vein for reducing hypertension of the liver. The method includes the implantation of a device according to the invention by which blood is diverted. A conduit is inserted within one vessel, normally a vein, and blood diverted to the conduit from another vessel such as an artery, wherein the blood is mixed.
Inventors
- 👤 Stanley C. Harbuck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:08
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2412; A61B; A61B17/00; A61B17/11; A61B90/00; A61F2/04; A61F2/06; A61B2017/1107; A61F2002/065; Y; Y10; Y10S; Y10S623/00; Y10S623/902; Y10S623/903
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
108 words
A method for reducing hypertension of a liver having a hepatic artery, comprising: ligating the hepatic artery into the liver; diverting the blood from the hepatic artery proximal of the liver by means of an arterial conduit formed of polymer fabric to a portal vein conduit formed of a polymer fabric; joining flow through the arterial conduit to flow through the portal vein conduit at a junction formed of polymer fabric; discharging said joined arterial blood flow and portal vein blood flow proximal of the liver, said portal vein conduit being inserted in said portal vein proximal of the liver, thereby to reduce blood pressure in the liver.
Claim 2
Independent Claim
108 words
A method for reducing hypertension of a liver having a hepatic artery, comprising: ligating the hepatic artery into the liver; diverting the blood from the hepatic artery proximal of the liver by means of an arterial conduit formed of polymer fabric to a portal vein conduit formed of a polymer fabric; joining flow through the arterial conduit to flow through the portal vein conduit at a junction formed of polymer fabric; discharging said joined arterial blood flow and portal vein blood flow proximal of the liver, said portal vein conduit being inserted in said portal vein proximal of the liver, thereby to reduce blood pressure in the liver.
Claim 3
Dependent Claim
39 words
The method of claim 1 further comprising: mixing in a controlled ratio arterial blood diverted from said hepatic artery with venous blood from said portal vein at an arterial conduit blood discharge nozzle disposed within said portal vein conduit.
References Cited (Backward Citations)
US3272204A
Cited
US4208745A
Cited
US4311659A
Cited
US4225979A
Cited
US4204525A
Cited
US4240434A
Cited
US4313231A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-26 | 1988-08-27 | 1989-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-26 | 1992-08-27 | 1993-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-26 | 1996-08-27 | 1997-02-26 | $7700.00 | Window Closed / Lapsed |