US3568659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable percutaneous intracardiac pump and method of pumping blood
Assignee: Individual
•
Filing: 1968-09-24
•
Granted: 1971-03-09
•
Expires: 1988-09-24
Abstract
Abstract A heart pump is provided including a catheter and catheter tube having at its extremity a series of longitudinally extending ribs extending in angularly spaced relation about the catheter. The ribs are enclosed within a resilient tube which is expanded and contracted by said ribs to more or less fill the left ventricle of the heart. The ribs are flexed from a position generally parallel to the catheter axis to an outwardly bowed position by a flexible member extending into said catheter and through said catheter tube.
Inventors
- 👤 James N Karnegis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:19
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/02; A61M25/04; A61M60/00; A61M60/10; A61M60/122; A61M60/126; A61M60/13; A61M60/20; A61M60/295; A61M60/40; A61M60/497; A61M60/50; A61M60/508; A61M60/515; A61M60/80; A61M60/855; A61M60/865; A61M60/867; A61M2205/00; A61M2205/32
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
117 words
A heart pump including: a catheter having a tip end; a series of resilient flexible ribs in angularly spaced relation about said catheter and extending parallel to the axis thereof; means securing an end of each of said ribs to said catheter adjoining the tip end thereof; a ring slidably supported on said catheter and to which the other ends of said ribs are anchored; a reciprocating member slidably supported within the catheter; said catheter having longitudinally extending slot means therein inwardly of said ring; means extending through said slot means connecting said ring with said reciprocating member; and a flexible resilient tube encircling said ribs and anchored to said catheter beyond the ends of said ribs.
Claim 2
Dependent Claim
117 words
A heart pump including: a catheter having a tip end; a series of resilient flexible ribs in angularly spaced relation about said catheter and extending parallel to the axis thereof; means securing an end of each of said ribs to said catheter adjoining the tip end thereof; a ring slidably supported on said catheter and to which the other ends of said ribs are anchored; a reciprocating member slidably supported within the catheter; said catheter having longitudinally extending slot means therein inwardly of said ring; means extending through said slot means connecting said ring with said reciprocating member; and a flexible resilient tube encircling said ribs and anchored to said catheter beyond the ends of said ribs.
Claim 3
Dependent Claim
13 words
The structure of claim 1 and in which said reciprocating member is hollow.
Claim 4
Dependent Claim
25 words
The structure of claim 2 and including a guide wire slidably supported within said reciprocating member and extendable through said tip end of said catheter.
Claim 5
Independent Claim
61 words
A method of pumping blood from the heart by use of a catheter having on its extremity an expandable and contractable member including the steps of: inserting the catheter through the aorta and into the left ventricle of the heart; mechanically expanding the member to force blood through the aorta; and contracting the member to draw blood into the left ventricle.
Claim 6
Independent Claim
61 words
A method of pumping blood from the heart by use of a catheter having on its extremity an expandable and contractable member including the steps of: inserting the catheter through the aorta and into the left ventricle of the heart; mechanically expanding the member to force blood through the aorta; and contracting the member to draw blood into the left ventricle.
Claim 7
Dependent Claim
32 words
The method of claim 4 and in which the expandable and contractable member is actuated by a flexible member extending into said catheter, and including the step of reciprocating said flexible member.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |