DISPOSABLE PERCUTANEOUS INTRACARDIAC PUMP AND METHOD OF PUMPING BLOOD

• US 3,568,659 A
• Filed: 09/24/1968
• Issued: 03/09/1971
• Est. Priority Date: 09/24/1968
• Status: Expired due to Term

• Current Assignee: James N. Karnegis
• Original Assignee: James N. Karnegis
• Inventors: Karnegis, James N.
• Application Number:
  US04/762,017
• Time in Patent Office: 896 Days
• US Class Current: 600/18
• CPC Class Codes: A61M 2205/32 with radio-opaque indicia
• CPC Class Codes: A61M 25/04 in the body, e.g. expansible A61M25/10, A61M16/0488 take precedence
• CPC Class Codes: A61M 60/13 by means of a catheter allowing explantation, e.g. catheter pumps temporarily introduced via the vascular system
• CPC Class Codes: A61M 60/295 Balloon pumps for circulatory assistance
• CPC Class Codes: A61M 60/497 for balloon pumps for circulatory assistance
• CPC Class Codes: A61M 60/515 Regulation using real-time patient data
• CPC Class Codes: A61M 60/865 Devices for guiding or inserting pumps or pumping devices into the patient's body
• CPC Class Codes: A61M 60/867 using position detection during deployment, e.g. for blood pumps mounted on and driven through a catheter

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.

Claims

1. 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.

2. The structure of claim 1 and in which said reciprocating member is hollow.

3. 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.

4. 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.

5. 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.