Intra-aortic balloon catheter having flexible torque transmitting tube
First Claim
1. A balloon catheter comprising:
- a catheter having a proximate end and a distal end;
an inflatable and deflatable balloon having a proximate end and a distal end, said proximate end of the balloon being sealably attached to the distal end of the catheter for admitting fluid and withdrawing fluid from the balloon; and
a central lumen disposed within said catheter and said balloon and extending the length of said catheter, said central lumen having a proximate end and a distal end, said distal end of said central lumen being sealably attached to the distal end of the balloon;
said central lumen comprising a flexible core wrapped spirally with a spring-like material so that the wrapped core can transmit positive torque when rotated in the direction that tends to close the spiral wrap, wherein said spring-like material is made of a flat wire stock having a rectangular cross-section.
7 Assignments
0 Petitions
Accused Products
Abstract
A balloon catheter is disclosed which is flexible yet transmits positive torque when rotated in the direction for unwrapping the balloon. The balloon catheter comprises a hollow catheter having a proximate end and a distal end, an inflatable and deflatable balloon having a proximate end and a distal end, said proximate end of the balloon being sealably attached to the distal end of the catheter for admitting fluid (generally a gas) and withdrawing fluid from the balloon, and a flexible central lumen disposed within said hollow catheter and having a proximate end and a distal end, said distal end of said central lumen being sealably attached to the distal end of the balloon, said central lumen comprising a flexible core wrapped spirally with a spring-like material so that the wrapped core can transmit positive torque when rotated in one direction. Preferably, the flexible core is made of a polymeric or elastomeric tube so that access to the aorta can be obtained through it.
212 Citations
13 Claims
-
1. A balloon catheter comprising:
-
a catheter having a proximate end and a distal end; an inflatable and deflatable balloon having a proximate end and a distal end, said proximate end of the balloon being sealably attached to the distal end of the catheter for admitting fluid and withdrawing fluid from the balloon; and a central lumen disposed within said catheter and said balloon and extending the length of said catheter, said central lumen having a proximate end and a distal end, said distal end of said central lumen being sealably attached to the distal end of the balloon; said central lumen comprising a flexible core wrapped spirally with a spring-like material so that the wrapped core can transmit positive torque when rotated in the direction that tends to close the spiral wrap, wherein said spring-like material is made of a flat wire stock having a rectangular cross-section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
Specification