Patent US4562597A successfully refreshed from Google Patents.
US4562597A
Expired / Lapsed
US
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Method of supplying blood to blood receiving vessels
Assignee: Bayer Medical Care Inc
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Filing: 1983-04-29
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Granted: 1986-01-07
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Expires: 2003-04-29
Abstract
Abstract A vascular graft is used to supply blood to one or more coronary artery branches. The vascular graft has an elongated U-shaped tubular body providing a continuous passage for carrying blood from a high pressure blood supply to a blood receiver. One or more openings in the body allow blood to flow into the coronary artery branches. The flow and pressure of the blood in the passage is controlled by a restriction providing a Venturi passage located remote from the inlet end of the tubular body. The restriction is reinforced with an annular sleeve to maintain a desired cross sectional area and length of the Venturi passage. The pressure differential between the blood supply and blood receiver maintains continuous and adequate blood flow at a desired pressure in the body passage and provides a continual supply of blood for the coronary artery branches.
Inventors
- 👤 Zinon C. Possis
- 👤 Demetre M. Nicoloff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:51
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; Y; Y10; Y10S; Y10S623/00; Y10S623/902; Y10S623/903
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
179 words
A method for providing a continuous supply of flowing blood to at least one popliteal artery of a living body with an elongated biocompatible vascular graft having an inlet end and outlet end, a continuous passage extended from the inlet end to the outlet end for accommodating a continuous flow of blood and blood flow restriction means in the outlet portion thereof comprising: securing the inlet end of the graft to a femoral artery to supply blood under pressure to said passage to allow blood to flow in said continuous passage, securing at least one portion of the graft between the inlet end and the restriction means to at least one popliteal artery to continuously supply blood to said popliteal artery, and securing the outlet end of the graft to a popliteal vein whereby a continuous flow of blood flows through said passage from the inlet to the outlet end thereof and into said popliteal vein, said blood flow restriction means being operable to maintain flowing blood at a pressure in said passage sufficient to perfuse the popliteal artery.
Claim 2
Independent Claim
179 words
A method for providing a continuous supply of flowing blood to at least one popliteal artery of a living body with an elongated biocompatible vascular graft having an inlet end and outlet end, a continuous passage extended from the inlet end to the outlet end for accommodating a continuous flow of blood and blood flow restriction means in the outlet portion thereof comprising: securing the inlet end of the graft to a femoral artery to supply blood under pressure to said passage to allow blood to flow in said continuous passage, securing at least one portion of the graft between the inlet end and the restriction means to at least one popliteal artery to continuously supply blood to said popliteal artery, and securing the outlet end of the graft to a popliteal vein whereby a continuous flow of blood flows through said passage from the inlet to the outlet end thereof and into said popliteal vein, said blood flow restriction means being operable to maintain flowing blood at a pressure in said passage sufficient to perfuse the popliteal artery.
Claim 3
Dependent Claim
34 words
The method of claim 1 wherein: a plurality of portions of said graft between the restriction means and the inlet end are anastomosed to separate popliteal arteries to continuously supply to said popliteal arteries.
Claim 4
Independent Claim
231 words
A method of providing a continuous supply of flowing blood from an artery to at least one popliteal artery of a living body with an elongated bilocompatible vascular graft comprising a single tubular member having an inlet end, an outlet end, a single continuous passage extended from the inlet end to the outlet end for accommodating a continuous flow of blood, and a blood flow restriction section in a outlet portion thereof for maintaining flowing blood at a pressure sufficient to perfuse the blood receiving popliteal artery comprising: securing the inlet end of the tubular member to an artery in a manner to allow blood to flow from the artery into said continuous passage, securing at least one portion of the tubular member between the inlet end and restriction section to at least one popliteal artery, said portion having a hole to allow blood to flow from said continuous passage into said popliteal artery, and securing the outlet end of the tubular member to a popliteal vein having blood pressure less than the blood pressure of the supply of blood from the artery whereby continuous flow of blood flows through said continuous passage from the inlet end to the outlet end thereof into the second blood receiving vessel, said blood flow restriction section being operable to maintain flowing blood at a pressure in said passage sufficient to perfuse the popliteal artery.
Claim 5
Independent Claim
231 words
A method of providing a continuous supply of flowing blood from an artery to at least one popliteal artery of a living body with an elongated bilocompatible vascular graft comprising a single tubular member having an inlet end, an outlet end, a single continuous passage extended from the inlet end to the outlet end for accommodating a continuous flow of blood, and a blood flow restriction section in a outlet portion thereof for maintaining flowing blood at a pressure sufficient to perfuse the blood receiving popliteal artery comprising: securing the inlet end of the tubular member to an artery in a manner to allow blood to flow from the artery into said continuous passage, securing at least one portion of the tubular member between the inlet end and restriction section to at least one popliteal artery, said portion having a hole to allow blood to flow from said continuous passage into said popliteal artery, and securing the outlet end of the tubular member to a popliteal vein having blood pressure less than the blood pressure of the supply of blood from the artery whereby continuous flow of blood flows through said continuous passage from the inlet end to the outlet end thereof into the second blood receiving vessel, said blood flow restriction section being operable to maintain flowing blood at a pressure in said passage sufficient to perfuse the popliteal artery.
Claim 6
Dependent Claim
31 words
A method of claim 3 including: securing separate portions of the tubular member between the inlet ends and restriction section to separate popliteal arteries to supply said popliteal arteries with blood.
Claim 7
Dependent Claim
19 words
The method of claim 3 wherein: said inlet end of the tubular member is secured to the femoral artery.
Claim 8
Dependent Claim
41 words
The method of claim 3 wherein: the inlet end of the tubular member is secured to the femoral artery and a plurality of portions of the tubular member between the inlet end and restriction section are anastomosed to separate popliteal arteries.
Claim 9
Independent Claim
231 words
A method of providing a continuous supply of flowing blood from an artery to at least one peroneal artery of a living body with an elongated bilocompatible vascular graft comprising a single tubular member having an inlet end, and outlet end, a single continuous passage extend-d from the inlet end to the outlet end for accommodating a continuous flow of blood, and a blood flow restriction section in a outlet portion thereof for maintaining flowing blood at a pressure sufficient to perfuse the blood receiving peroneal artery comprising: securing the inlet end of the tubular member to an artery in a manner to allow blood to flow from the artery into said continuous passage, securing at least one portion of the tubular member between the inlet end and restriction section to at least one peroneal artery, said portion having a hole to allow blood to flow from said continuous passage into said peroneal artery, and securing the outlet end of the tubular member to a popliteal vein having blood pressure less than the blood pressure of the supply of blood from the artery whereby continuous flow of blood flows through said continuous passage from the inlet end to the outlet end thereof into the second blood receiving vessel, said blood flow restriction section being operable to maintain flowing blood at a pressure in said passage sufficient to perfuse the peroneal artery.
Claim 10
Independent Claim
231 words
A method of providing a continuous supply of flowing blood from an artery to at least one peroneal artery of a living body with an elongated bilocompatible vascular graft comprising a single tubular member having an inlet end, and outlet end, a single continuous passage extend-d from the inlet end to the outlet end for accommodating a continuous flow of blood, and a blood flow restriction section in a outlet portion thereof for maintaining flowing blood at a pressure sufficient to perfuse the blood receiving peroneal artery comprising: securing the inlet end of the tubular member to an artery in a manner to allow blood to flow from the artery into said continuous passage, securing at least one portion of the tubular member between the inlet end and restriction section to at least one peroneal artery, said portion having a hole to allow blood to flow from said continuous passage into said peroneal artery, and securing the outlet end of the tubular member to a popliteal vein having blood pressure less than the blood pressure of the supply of blood from the artery whereby continuous flow of blood flows through said continuous passage from the inlet end to the outlet end thereof into the second blood receiving vessel, said blood flow restriction section being operable to maintain flowing blood at a pressure in said passage sufficient to perfuse the peroneal artery.
Claim 11
Dependent Claim
31 words
A method of claim 7 including: securing separate portions of the tubular member between the inlet ends and restriction section to separate peroneal arteries to supply said peroneal arteries with blood.
Claim 12
Dependent Claim
19 words
The method of claim 7 wherein: said inlet end of the tubular member is secured to the femoral artery.
Claim 13
Dependent Claim
41 words
The method of claim 7 wherein: the inlet end of the tubular member is secured to the femoral artery and a plurality of portions of the tubular member between the inlet end and restriction section are anastomosed to separate peroneal arteries.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-06 | 1989-07-08 | 1990-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-06 | 1993-07-08 | 1994-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-06 | 1997-07-08 | 1998-01-07 | $7700.00 | Window Closed / Lapsed |