Patent EP0364293A2 successfully refreshed from Google Patents.
EP0364293A2
Expired / Lapsed
EP
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Blood pumping catheter
Assignee: DSM Biomedical Inc
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Filing: 1989-10-13
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Granted: —
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Expires: 2009-10-13
Abstract
Abstract Apparatus for pumping blood comprises a catheter to be located within the aorta (22) and having an end portion (26) to be located in spaced relation from the aortic valve (28). A rotary pump member (24) is disposed within a tubular portion (38) of the end portion (26) and is operated by a rotary drive wire (32A) extending within the catheter. A flexible skirt (52) extends about the tubular portion (38) to contact the walls of the aorta (22) and ensures that substantially all the blood within the aorta flows through the pump (24) and also that the end portion (26) is maintained in a spaced apart relation from the aortic valve (28).
Inventors
- 👤 John Nash
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 17:01
CPC Classifications
A; A61; A61M; A61M60/00; A61M60/10; A61M60/122; A61M60/126; A61M60/135; A61M60/139; A61M60/20; A61M60/205; A61M60/216; A61M60/237; A61M60/40; A61M60/403; A61M60/408; A61M60/411; A61M60/80; A61M60/855; A61M60/861; A61M60/148; A61M60/414; Y; Y10; Y10S; Y10S415/00; Y10S415/90
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
208 words
Apparatus to be located within the aorta of a living being to pump blood through the vascular system of the being in the absence of contact with the aortic valve (28), the apparatus comprising an elongate catheter (20) having an end portion (26) to be located distally of the operator and dimensioned to be received within the aorta (22) so that the end portion (26) is in proximity to the aortic valve (28), comprising pump means (24) located at the end portion (26) and drive means (32) operatively connected to the pump means (24), the end portion (26) including an inlet (40) located distally of the pump means (24) and an outlet (42) located proximately of the pump means (24), the inlet (40) and outlet (42) being in fluid communication with the aorta (22), barrier means being present to direct substantially all of the blood flowing through the aorta (22) into the inlet (40), through the pump means (24) and out through the outlet (42) characterised in that the barrier means (52) is located about the end portion (26) and is adapted to contact the wall of the aorta (22) in blood flow sealing engagement at a location longitudinally spaced from and upstream of the aortic valve (28).
Claim 2
Dependent Claim
208 words
Apparatus to be located within the aorta of a living being to pump blood through the vascular system of the being in the absence of contact with the aortic valve (28), the apparatus comprising an elongate catheter (20) having an end portion (26) to be located distally of the operator and dimensioned to be received within the aorta (22) so that the end portion (26) is in proximity to the aortic valve (28), comprising pump means (24) located at the end portion (26) and drive means (32) operatively connected to the pump means (24), the end portion (26) including an inlet (40) located distally of the pump means (24) and an outlet (42) located proximately of the pump means (24), the inlet (40) and outlet (42) being in fluid communication with the aorta (22), barrier means being present to direct substantially all of the blood flowing through the aorta (22) into the inlet (40), through the pump means (24) and out through the outlet (42) characterised in that the barrier means (52) is located about the end portion (26) and is adapted to contact the wall of the aorta (22) in blood flow sealing engagement at a location longitudinally spaced from and upstream of the aortic valve (28).
Claim 3
Dependent Claim
37 words
Apparatus according to Claim 1 characterised in that the barrier means comprises a flexible skirt (52) extending about the periphery of the end portion (26) and adapted to conform to the internal walls of the aorta (22).
Claim 4
Dependent Claim
47 words
Apparatus according to Claim 1 or 2 characterised in that the end portion (26) comprises a tubular portion (38) defining an inlet (40) at one end and an outlet (42) at the other, the barrier means (52) extending about the periphery of the tubular end portion (38).
Claim 5
Dependent Claim
28 words
Apparatus according to Claim 3 characterised in that the skirt (52) extends from about the distal end (40) of the tubular portion (38) towards the proximal end (42).
Claim 6
Dependent Claim
26 words
Apparatus according to any preceding Claim characterised in that the tubular portion (38) is adapted to be expanded between a retracted configuration and an expanded configuration.
Claim 7
Dependent Claim
72 words
Apparatus according to Claim 5 characterised in that a flexible sleeve (20A) extends about the catheter and comprises at its distal end the tubular end portion (38), a plurality of elongate fingers (44) being disposed proximally of the tubular portion (38), the fingers (44) being arranged to be movable from a retracted position to an expanded position thereby to expand the tubular portion (38) from the retracted configuration to the expanded configuration.
Claim 8
Dependent Claim
27 words
Apparatus according to Claim 6 characterised in that the outlet (42) of the tubular end portion (38) is defined by the spaces (50) between the fingers (44).
Claim 9
Dependent Claim
30 words
Apparatus according to any preceding Claim characterised in that the pump means (24) comprises at least one blade (24B) which is movable between a compacted configuration and an expanded configuration.
Claim 10
Dependent Claim
160 words
A catheter (20) to be located within the aorta (22) of a person for pumping blood through the vascular system of the person, the catheter comprising rotary pump means (24) disposed at the end (26) of the catheter (20) distal from the operator, rotary drive means (32) operatively connected to the pump means (24) extending within the catheter (20), a tube (38) extending about the pump means (24) and defining an inlet (40) for the flow of blood to the pump means (24) at one end and an outlet (42) at the other characterised by a flexible skirt (52) extending about the periphery of the tube (38), the skirt (52) being hingedly connected to the tube (38) and arranged in use to extend generally parallel to the axis of the tube (38) to sealingly engage the side walls of the aorta (22) to hold the end (26) at a position longitudinally spaced from and upstream of the aortic valve (28).
Claim 11
Dependent Claim
160 words
A catheter (20) to be located within the aorta (22) of a person for pumping blood through the vascular system of the person, the catheter comprising rotary pump means (24) disposed at the end (26) of the catheter (20) distal from the operator, rotary drive means (32) operatively connected to the pump means (24) extending within the catheter (20), a tube (38) extending about the pump means (24) and defining an inlet (40) for the flow of blood to the pump means (24) at one end and an outlet (42) at the other characterised by a flexible skirt (52) extending about the periphery of the tube (38), the skirt (52) being hingedly connected to the tube (38) and arranged in use to extend generally parallel to the axis of the tube (38) to sealingly engage the side walls of the aorta (22) to hold the end (26) at a position longitudinally spaced from and upstream of the aortic valve (28).
Claim 12
Dependent Claim
98 words
A catheter (20) to be placed within the body of a person characterised in that the catheter comprises an outer sleeve (20A) having a flexible tube-like end portion (26) to be located distally of the operator, the end portion (26) being expandable between a retracted condition during insertion of the catheter and an expanded condition when the end portion (26) is at the desired location within the body, a plurality of fingers disposed about the periphery of the end portion (26) and arranged to be movable to expand the end portion (26) between the retracted and expanded conditions.
Claim 13
Dependent Claim
98 words
A catheter (20) to be placed within the body of a person characterised in that the catheter comprises an outer sleeve (20A) having a flexible tube-like end portion (26) to be located distally of the operator, the end portion (26) being expandable between a retracted condition during insertion of the catheter and an expanded condition when the end portion (26) is at the desired location within the body, a plurality of fingers disposed about the periphery of the end portion (26) and arranged to be movable to expand the end portion (26) between the retracted and expanded conditions.
References Cited (Backward Citations)
No citation records indexed.
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