Patent US4753221A successfully refreshed from Google Patents.
US4753221A
Expired / Lapsed
US
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Blood pumping catheter and method of use
Assignee: DSM Biomedical Inc
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Filing: 1986-10-22
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Granted: 1988-06-28
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Expires: 2006-10-22
Abstract
Abstract An elongated catheter for pumping blood through at least a portion of a being's vascular system. The catheter is of sufficiently small diameter and flexiblility to enable it to be passed through the vascular system so that the distal end portion of the catheter is located within or adjacent the being' heart. A rotatable pump is located at the distal end of the catheter and is rotated by drive means in the catheter. The distal end portion of the catheter includes an inlet for blood to flow therein and an outlet for blood to flow thereout. The catheter is arranged so that blood is pumped by the catheter's pump through the heart and into the vascular system without requiring any pumping action of the heart.
Inventors
- 👤 Kenneth Kensey
- 👤 John Nash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:55
CPC Classifications
A; A61; A61M; A61M60/00; A61M60/40; A61M60/403; A61M60/408; A61M60/411; A61M60/414; A61M60/10; A61M60/122; A61M60/126; A61M60/13; A61M60/165; A61M60/17; A61M60/174; A61M60/20; A61M60/205; A61M60/216; A61M60/226; A61M60/232; A61M60/237; A61M60/80; A61M60/802; A61M60/804; A61M60/806; A61M25/00; A61M60/148; A61M60/833; Y; Y10; Y10S; Y10S415/00; Y10S415/90
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
189 words
Apparatus for disposition within the body of a living being to effect the pumping of blood through at least a portion of the being's vascular system, said apparatus comprising an elongated catheter having a distal end portion, said catheter being positionable within the vascular system of said being so that its distal end portion is located at an operative position within or adjacent said being's heart, said catheter including pump means located at said distal end portion, said pump means including a rotatable portion of a predetermined, first configuration, said first configuration being sufficiently compact to enable said catheter to be passed longitudinally through a portion of said vascular system to said operative position, said rotatable portion being alterable in configuration to a second, enlarged configuration at said operative position, and drive means for effecting the rotation of said rotatable portion of said pump means at said operative position such that when said rotatable portion of said pump means is in said enlarged configuration blood is pumped by the rotation of said rotatable portion of said pump means through the heart and into said portion of said vascular system.
Claim 2
Dependent Claim
189 words
Apparatus for disposition within the body of a living being to effect the pumping of blood through at least a portion of the being's vascular system, said apparatus comprising an elongated catheter having a distal end portion, said catheter being positionable within the vascular system of said being so that its distal end portion is located at an operative position within or adjacent said being's heart, said catheter including pump means located at said distal end portion, said pump means including a rotatable portion of a predetermined, first configuration, said first configuration being sufficiently compact to enable said catheter to be passed longitudinally through a portion of said vascular system to said operative position, said rotatable portion being alterable in configuration to a second, enlarged configuration at said operative position, and drive means for effecting the rotation of said rotatable portion of said pump means at said operative position such that when said rotatable portion of said pump means is in said enlarged configuration blood is pumped by the rotation of said rotatable portion of said pump means through the heart and into said portion of said vascular system.
Claim 3
Dependent Claim
50 words
The catheter of claim 1 wherein said distal end portion includes an inlet for blood to flow therein and an outlet for blood to flow thereout, said inlet being in fluid communication with the right ventricle of the heart and said outlet being in fluid communication with the pulmonary artery.
Claim 4
Dependent Claim
12 words
The catheter of claim 2 wherein said pump is a centrifugal pump.
Claim 5
Dependent Claim
12 words
The catheter of claim 2 wherein said pump is an axial pump.
Claim 6
Dependent Claim
16 words
The catheter of claim 2 wherein said distal end portion extends through the being's pulmonary valve.
Claim 7
Dependent Claim
12 words
The catheter of claim 5 wherein said pump is a centrifugal pump.
Claim 8
Dependent Claim
12 words
The catheter of claim 5 wherein said pump is an axial pump.
Claim 9
Dependent Claim
26 words
The catheter of claim 6 additionally comprising expandable means at said distal end portion for holding said distal end portion in place through said pulmonary valve.
Claim 10
Dependent Claim
24 words
The catheter of claim 8 wherrein said pump comprises a member having at least one blade arranged to be rotated by said drive means.
Claim 11
Dependent Claim
95 words
The catheter of claim 8 wherein said pump comprises a member having a pair of flexible tubes, each of said tubes having an open free end, said tubes being connected together at a common tubular base, said member having a central axis, said base being arranged to be rotated about said axis to cause said free end of said tubes to flex in a direction having a radially outward component, said tubular base being in fluid communication with said inlet and the free ends of said flexible tubes being in fluid communication with said outlet.
Claim 12
Dependent Claim
12 words
The catheter of claim 8 wherein said expandable means comprises a balloon.
Claim 13
Dependent Claim
63 words
The catheter of claim 1 wherein said distal end portion includes an inlet for blood to flow therein and an outlet for blood to flow thereout, said inlet being adapted so as to be in fluid communication with the left ventricle of said heart, and said outlet being adapted so as to be in fluid communication with the aorta of said vascular system.
Claim 14
Dependent Claim
12 words
The catheter of claim 12 wherein said pump is a centrifugal pump.
Claim 15
Dependent Claim
12 words
The catheter of claim 12 wherein said pump is an axial pump.
Claim 16
Dependent Claim
15 words
The catheter of claim 12 wherein said distal end portion extends through the aortic valve.
Claim 17
Dependent Claim
26 words
The catheter of claim 14 additionally comprising expandable means at said distal end portion for holding said distal end portion in place through said aortic valve.
Claim 18
Dependent Claim
24 words
The catheter of claim 16 wherein said pump comprises a member having at least one blade arranged to be rotated by said drive means.
Claim 19
Dependent Claim
98 words
The catheter of claim 16 wherein said pump comprises a member having a pair of flexible tubes, each of said tubes having an open free end, said tubes being connected together at a common tubular base, said member having a central axis, said member being arranged to be rotated about said axis by said drive means to cause said free end of said tubes to flex in a direction having radially outward component, said tubular base being in fluid communication with said inlet and said free ends of said flexible tubes being in fluid communication with said outlet.
Claim 20
Dependent Claim
24 words
The catheter of claim 16 wherein said pump comprises a member having at least one blade arranged to be rotated by said drive means.
Claim 21
Dependent Claim
12 words
The catheter of claim 16 wherein said expandable means comprises a balloon.
Claim 22
Dependent Claim
41 words
The catheter of claim 12 wherein said distal end portion additionally comprises means located at said distal end portion for engaging the wall of the aorta for holding said distal end portion in place adjacent the aortic valve of said being.
Claim 23
Dependent Claim
98 words
The catheter of claim 21 wherein said pump comprises a member having a pair of flexible tubes, each of said tubes having an open free end, said tubes being connected together at a common tubular base, said member having a central axis and being arranged to be rotated about said axis by said drive means to cause said free ends of said tubes to flex in a direction having a radially outward component, said tubular base being in fluid communication with said inlet and said free ends of said flexible tubes being in fluid communication with said outlet.
Claim 24
Dependent Claim
63 words
The catheter of claim 12 additionally comprising cover means, said cover means including said inlet and said outlets, said cover means being arranged for disposition within the aorta and adjacent the aortic valve, whereupon blood can flow from said left ventricle through said aortic valve into said inlet in said cover means and through the outlet in said cover means into the aorta.
Claim 25
Dependent Claim
20 words
The catheter of claim 23 wherein said pump is located within said cover means between said inlet and said outlet.
Claim 26
Dependent Claim
99 words
The catheter of claim 24 wherein said pump means comprises a member having a pair of flexible tubes, each of said tubes having an open free end, said tubes being connected together at a common tubular base, said member having a central axis about which said member is arranged to be rotated by said drive means to cause said free ends of said tubes to flex in a direction having a radially outward component, said tubular base being in fluid communication with said inlet and said free ends of said flexible tubes being in fluid communication with said outlet.
Claim 27
Dependent Claim
29 words
The catheter of claim 24 wherein said rotatable portion of said pump means comprises a member having at least one blade arranged to be rotated by said drive means.
Claim 28
Dependent Claim
14 words
The catheter of claim 23 wherein said cover means comprises an elastomeric tubular member.
Claim 29
Independent Claim
137 words
The method of pumping blood into the vascular system of a living being without requiring operation of the being's heart by means of a catheter, said catheter having a distal end at which a pump having a rotatable, blood engaging portion is located, said method comprising the steps of introducing said catheter into and through a portion of the vascular system of said being until said pump means is located at an operative position within or closely adjacent the heart of said being, expanding said rotatable portion of said pump from a compact inoperative configuration to an enlarged, operative configuration at said operative position, and causing said rotatable portion of said pump to rotate while in said enlarged operative configuration at said operative position, whereupon blood is pumped into said system through said heart by said rotation.
Claim 30
Independent Claim
137 words
The method of pumping blood into the vascular system of a living being without requiring operation of the being's heart by means of a catheter, said catheter having a distal end at which a pump having a rotatable, blood engaging portion is located, said method comprising the steps of introducing said catheter into and through a portion of the vascular system of said being until said pump means is located at an operative position within or closely adjacent the heart of said being, expanding said rotatable portion of said pump from a compact inoperative configuration to an enlarged, operative configuration at said operative position, and causing said rotatable portion of said pump to rotate while in said enlarged operative configuration at said operative position, whereupon blood is pumped into said system through said heart by said rotation.
Claim 31
Dependent Claim
71 words
The method of claim 28 wherein said distal end portion of said catheter comprises an inlet for blood to flow therein and an outlet for blood to flow thereout, and wherein said catheter is positioned so that its distal end portion is located such that said inlet is in fluid communication with the left ventricle of said being and said outlet is in fluid communication with the aorta of said being.
Claim 32
Dependent Claim
71 words
The method of claim 28 wherein said distal end portion of said catheter comprises an inlet for blood to flow therein and an outlet for blood to flow thereout, and wherein said catheter is positioned so that its distal end portion is located at a position wherein said inlet is in fluid communication with said right ventricle and said outlet is in fluid communication with the pulmonary artery of said being.
Claim 33
Dependent Claim
16 words
The method of claim 29 wherein said distal end portion is extended through the aortic valve.
Claim 34
Dependent Claim
16 words
The method of claim 30 wherein said distal end portion is extended through the pulmonary valve.
Claim 35
Dependent Claim
30 words
The catheter of claim 1 wherein said catheter is of sufficient flexibility to enable it to be freely passed longitudinally through a portion of the vascular system of said being.
Claim 36
Dependent Claim
39 words
The method of claim 30 wherein said catheter is of a small diameter and sufficient flexibility to enable it to be introduced percutaneously and passed through a portion of the vascular system of said being to said operative position.
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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) | 1991-06-28 | 1991-12-28 | 1992-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-28 | 1995-12-28 | 1996-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-28 | 1999-12-28 | 2000-06-28 | $7700.00 | Window Closed / Lapsed |