Balloon catheter with improved pressure source
First Claim
1. A balloon catheter, comprising:
- a. an elongate tubular member having a proximal end and a distal end;
b. a balloon connected to the distal end of the elongate tubular member, the balloon having an interior in fluid communication with the inside of the elongate tubular member;
c. a fluid displacement rod having a portion thereof slidably disposed in the tubular member such that the balloon may be expanded upon longitudinal actuation of the rod; and
d. a seal connected to the proximal end of the tubular member and disposed about the displacement rod to create a liquid seal between the inside of the tubular member and the displacement rod.
3 Assignments
0 Petitions
Accused Products
Abstract
A balloon catheter is disclosed which includes a fluid displacement rod at least partially and slidably disposed in an elongate tubular member with a balloon connected to the distal end of the tubular member. A seal connected to the proximal end of the tubular member creates a liquid tight seal between the inside of the tubular member and the displacement rod. Accordingly, longitudinal actuation of the displacement rod causes the balloon to expand and/or contract. The balloon catheter may be a fixed wire, an over-the-wire or a single-operator exchange type balloon catheter. In addition, a pressure gauge may be connected to the proximal end of the tubular member. A one-way valve is also disclosed which allows the balloon catheter to be prepped via the guide wire lumen. Accordingly, the present invention negates the need for both an inflation device and an inflation lumen which results in a significant improvement in catheter performance and cost savings.
211 Citations
29 Claims
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1. A balloon catheter, comprising:
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a. an elongate tubular member having a proximal end and a distal end; b. a balloon connected to the distal end of the elongate tubular member, the balloon having an interior in fluid communication with the inside of the elongate tubular member; c. a fluid displacement rod having a portion thereof slidably disposed in the tubular member such that the balloon may be expanded upon longitudinal actuation of the rod; and d. a seal connected to the proximal end of the tubular member and disposed about the displacement rod to create a liquid seal between the inside of the tubular member and the displacement rod. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of using a balloon catheter, comprising the steps of:
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a. providing a balloon catheter wherein the balloon catheter includes; i. an elongate tubular member having a proximal end and a distal end; ii. a balloon connected to the distal end of the elongate tubular member, the balloon having an interior in fluid communication with the inside of the elongate tubular member; iii. a fluid displacement rod having a portion thereof slidably disposed in the tubular member such that the balloon may be expanded upon longitudinal actuation of the rod; and iv. a seal connected to the proximal end of the tubular member and disposed about the displacement rod to create a liquid seal between the inside of the tubular member and the displacement rod; b. inserting the balloon catheter into a vascular system of a patient; c. positioning the balloon catheter adjacent a treatment site in the vascular system; d. displacing the rod to at least partially expand the balloon; e. displacing the rod to at least partially contract the balloon; and f. withdrawing the balloon catheter from the vascular system.
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17. A balloon catheter, comprising:
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a. an elongate shaft having a proximal end, a distal end and a lumen disposed therein, the lumen extending from a point distal of the proximal end of the elongate shaft to the distal end of the elongate shaft; b. a balloon connected to the distal end of the elongate shaft, the balloon having an interior; and c. a one-way-valve connected to the distal end of the shaft, the one-way-valve permitting a pressurized fluid to flow from the lumen to the interior of the balloon while preventing the pressurized fluid to flow from the interior of the balloon to the lumen. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A method of prepping a balloon catheter, comprising the steps of:
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a. providing a balloon catheter having a proximal end and a distal end, the balloon catheter including; i. an elongate shaft having a proximal end, a distal end and a lumen disposed therein; ii. a balloon connected to the distal end of the elongate shaft, the balloon having an interior; and iii. a one-way-valve connected to the distal end of the shaft, the one-way-valve permitting a pressurized fluid to flow from the lumen to the interior of the balloon while preventing the pressurized fluid to flow from the interior of the balloon to the lumen; b. providing a pressurized fluid source containing fluid therein; c. connecting the pressurized fluid source to the distal end of the lumen in the elongate shaft of the balloon catheter; d. plugging the proximal end of the lumen in the elongate shaft of the balloon catheter; and e. forcing fluid from the pressurized fluid source into the lumen such that the fluid passes into the lumen, through the one-way-valve and into the interior of the balloon.
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29. A balloon catheter, comprising:
- a sealed chamber;
a balloon connected to the distal end of the chamber and in fluid communication with the chamber;and a fluid displacement member disposed at least partially within the sealed chamber to displace fluid into or out of the balloon.
- a sealed chamber;
Specification