Catheter with perfusion system
First Claim
1. An atherectomy catheter comprising:
- a catheter body having a distal end, a proximal end and a lumen therebetween;
a housing having a longitudinal axis, a hollow interior, a proximal end affixed to the distal end of the catheter body, a distal end, a perfusion port entry, a perfusion port exit, and an aperture on a lateral side of the housing;
a work element disposed in the housing;
a work element connector with a proximal end and a distal end, the connector disposed in the catheter body with the distal end affixed to the work element, the perfusion port entry being proximal the work element, the perfusion port exit being distal the work element; and
the housing defines at least one passage, the passage being in fluid communication with each perfusion port to facilitate perfusion of fluid through the housing and past the work element.
2 Assignments
0 Petitions
Accused Products
Abstract
Improved atherectomy catheters and methods of use are disclosed. The catheter includes a flexible body with a longitudinal passage therethrough. A housing is mounted at the distal end, with an elongated aperture formed in a lateral side. A drive cable is disposed in the passage of the catheter body, and a working element is disposed in the housing, attached to the distal end of the drive cable. Passages and openings are provided for flowing blood into the housing and for flowing blood from a proximal to a distal side of the cutting blade. An impeller can be provided proximal to the cutting blade to impel blood into the housing and past the blade. Blood flows through the housing and past the blade so as to perfuse tissue downstream from the device.
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Citations
32 Claims
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1. An atherectomy catheter comprising:
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a catheter body having a distal end, a proximal end and a lumen therebetween; a housing having a longitudinal axis, a hollow interior, a proximal end affixed to the distal end of the catheter body, a distal end, a perfusion port entry, a perfusion port exit, and an aperture on a lateral side of the housing; a work element disposed in the housing; a work element connector with a proximal end and a distal end, the connector disposed in the catheter body with the distal end affixed to the work element, the perfusion port entry being proximal the work element, the perfusion port exit being distal the work element; and the housing defines at least one passage, the passage being in fluid communication with each perfusion port to facilitate perfusion of fluid through the housing and past the work element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. An atherectomy catheter for insertion into a blood vessel, comprising:
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a catheter body having a distal end, a proximal end and a lumen therebetween; a housing attached to the distal end of the catheter body, the housing has a perfusion port entry, a perfusion port exit, and a lateral side which defines an aperture for receiving stenotic material; a work element moveably disposed in the housing, the work element defines a portion of at least one passage, the passage being in fluid communication between the perfusion port entry and the perfusion port exit to facilitate perfusion of fluid through the housing and past the work element; and a drive cable, being disposed in the lumen of the catheter body, the drive cable has one end affixed to the work element for moving the work element, whereby, when the catheter device inserts into a blood vessel, blood enters the housing through the perfusion port entry, flows through the passage, past the work element, and exits the housing past the work element through the perfusion port exit. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification