Catheter purge device
First Claim
1. A catheter device for deflating and inflating a balloon positioned on a distal end of said catheter, comprising:
- (a) a catheter having a flexible deflatable/inflatable balloon in its distal region and adapted to have a deflation/inflation device connected to its proximal end;
(b) a balloon inflation lumen communicating with said balloon at the proximal end of said balloon and extending axially along the catheter and adapted to communicate with a deflation/inflation device at its proximal end;
(c) a directional flow lumen having a substantially smaller diameter than said balloon inflation lumen and distally terminating at the distal end of said balloon, said directional flow lumen extending axially along the length of the catheter and communicating with said balloon inflation lumen at the proximal end of said balloon inflation lumen, and distally of the proximal end of said balloon catheter; and
(d) one-way valve means positioned within the directional flow lumen at the proximal region of said catheter and distally of the proximal end thereof.
3 Assignments
0 Petitions
Accused Products
Abstract
A balloon dilatation catheter device and method adapted for use in percutaneous transluminal angioplasty, where the catheter has several lumens so arranged to more efficiently channel and cleanse harmful materials from within the catheter, thereby preventing dangerous materials, such as air, from entering the body cavity where air or other gas or liquid may cause harm or death. The device includes a balloon inflation lumen for inflating/deflating a balloon on the distal end of the catheter, and a directional flow lumen having a one-way valve, which prevents flow in the reverse direction. The catheter may also include a guidewire lumen for introducing guidewires or liquids into the proximal end of the catheter for use in the distal end, which may lie within a body lumen.
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Citations
9 Claims
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1. A catheter device for deflating and inflating a balloon positioned on a distal end of said catheter, comprising:
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(a) a catheter having a flexible deflatable/inflatable balloon in its distal region and adapted to have a deflation/inflation device connected to its proximal end; (b) a balloon inflation lumen communicating with said balloon at the proximal end of said balloon and extending axially along the catheter and adapted to communicate with a deflation/inflation device at its proximal end; (c) a directional flow lumen having a substantially smaller diameter than said balloon inflation lumen and distally terminating at the distal end of said balloon, said directional flow lumen extending axially along the length of the catheter and communicating with said balloon inflation lumen at the proximal end of said balloon inflation lumen, and distally of the proximal end of said balloon catheter; and (d) one-way valve means positioned within the directional flow lumen at the proximal region of said catheter and distally of the proximal end thereof. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for purging gases from catheter system, comprising the following steps:
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(a) applying a first vacuum on the proximal end portion of a balloon inflation lumen within said catheter, wherein said vacuum withdraws air from said balloon inflation lumen, balloon, and a directional flow lumen; (b) injecting a harmless fluid within said balloon inflation lumen, said fluid displacing any residual air remaining after said first vacuum step and forcing said residual air to a single, accessible location; and (c) applying a second vacuum on said balloon inflation lumen, wherein said residual air is readily removed from said accessible location. - View Dependent Claims (8, 9)
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Specification