Back-loading catheter
Assigneeev3 Inc.
InventorsJohn C. Oslund, Richard S. Kusleika, Kent D. Anderson, Cheryl A. Videen
Life of this patent
Estimating the term…
Abstract
A catheter provided with a collapsible inner lumen within a main body. The catheter can deploy a distal protection device using a guidewire which is threaded through the inner lumen, the inner lumen collapsing upon retrieval of the device into the catheter main body.
Claims23
A catheter for back-loading a device having been deployed on a guidewire in vasculature for performance of a medical procedure, comprising:
- a catheter main body having a distal end and an inner passage with a diameter sufficient so that the device, when it is retracted into engagement with said distal end, is received within said main body, said main body further having a lateral exit port formed through a wall thereof at a location spaced proximally from said distal end;
- a lumen received, and extending axially, within said inner passage, said lumen having a proximal portion communicating externally of said main body through said exit port, said lumen further including a defining wall, circumferentially continuous at an axial location proximate a distal extremity of said wall, said axial location, prior to back-loading the device, being axially proximate said distal end of said main body;
- and
- means for withdrawing said circumferentially continuous axial location proximally within said inner passage as the device is retracted and received within said main body.
A catheter, comprising:
- a catheter main body having a distal end, a proximal end and an exit port between said distal and proximal ends;
- and
- a collapsible inner lumen within said main body, said lumen having a distal end and a proximal end and communicating, at said proximal end thereof, with said exit port.
A method for retrieving a deployed medical device which comprises drawing the distal protection device into a catheter main body encircling an inner lumen to collapse said inner lumen.
A catheter for back-loading a medical device deployed in human vasculature, comprising:
- a catheter main body having a distal end and a large inside diameter within which the device is received upon retraction, said main body having a lateral exit port formed through a wall thereof at a proximal location;
- a lumen received within said catheter main body, said lumen having a proximal portion communicating externally of said main body through said exit port, said lumen further including a wall, circumferentially continuous at an axial location proximate a distal extremity of said wall, said axial location, prior to back-loading of the device, being axially proximate said distal end of said main body;
- and
- means for withdrawing said circumferentially continuous axial location proximally within said main body as the device is retracted.
A catheter, comprising:
- a catheter main body having a distal end, a proximal end and an exit port between said distal and proximal ends;
- and
- an inner lumen fixed within said main body, said lumen having a distal end and a proximal end and a line of perforation extending from said distal end axially toward said proximal end, said inner lumen communicating, at said proximal end thereof, with said exit port;
- wherein, when a guidewire extending through said inner lumen engages said line of perforation at said distal end of said inner lumen, said line of perforation fractures to define a slot.
A catheter, comprising:
- a catheter main body having a distal end, a proximal end and an exit port between said distal and proximal ends;
- and
- an inner lumen within said main body, said lumen having a distal end and a proximal end, said proximal end of said lumen being retractable through said exit port to withdraw said lumen within said catheter main body.
Dependencies are inferred from the claim text.