Universal dilator with reciprocal incisor
First Claim
1. A device for incising and dilating a stenosis in a vessel which comprises:
- a base member;
a plurality of blades mounted on said base member;
a housing formed with a plurality of slits;
a placement catheter, said placement catheter being formed with a lumen and having a distal end, said distal end of said placement catheter being attached to said housing to form a chamber therebetween, said base member being positioned in said chamber with said blades aligned with said slits; and
a push-pull catheter inserted through said lumen of said placement catheter and attached to said base member for movement of said base member in said chamber between a first position wherein said blades are withdrawn into said housing for use of said device as a dilator and a second position wherein said blades extend through said slits of said housing for use of said device as an incisor.
6 Assignments
0 Petitions
Accused Products
Abstract
A device for incising and dilating a stenosis in a vessel of a patient includes a dilator housing and a plurality of incising blades which can be selectively extended distally from the housing. Specifically, the plurality of blades are mounted on a base member which is attached to the distal end of a push-pull catheter. The housing has a plurality of slits which are positioned distally from the base member with the blades on the base member in alignment with the slits in the housing. A placement catheter is positioned in a surrounding relationship over the push-pull catheter, and the distal end of the placement catheter is attached to the housing to create a chamber between the placement catheter and the housing in which the base member is located. In the operation of the device, the push-pull catheter is manipulated distally and proximally in the placement catheter to move the base member within the chamber between a first position and a second position. In the first position the blades are withdrawn into the housing and the housing is used as a dilator. In the second position the blades are extended distally through the slits in the housing and the device is used as an incisor.
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Citations
18 Claims
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1. A device for incising and dilating a stenosis in a vessel which comprises:
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a base member; a plurality of blades mounted on said base member; a housing formed with a plurality of slits; a placement catheter, said placement catheter being formed with a lumen and having a distal end, said distal end of said placement catheter being attached to said housing to form a chamber therebetween, said base member being positioned in said chamber with said blades aligned with said slits; and a push-pull catheter inserted through said lumen of said placement catheter and attached to said base member for movement of said base member in said chamber between a first position wherein said blades are withdrawn into said housing for use of said device as a dilator and a second position wherein said blades extend through said slits of said housing for use of said device as an incisor. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A device which comprises:
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means for dilating a stenosis in a vessel of a patient; means having a plurality of blades for incising the stenosis, said dilating means surrounding said incising means to create a chamber for said incising means, said incising means being moveable in said chamber between a first position wherein said blades are withdrawn into said chamber and a second position wherein said blades extend from said chamber and from said dilating means for incision of the stenosis; and means attached to said incising means for moving said incising means between said first position and said second position. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for manufacturing a device for incising and dilating a stenosis in a vessel of a patient which comprises the steps of:
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mounting a plurality of blades on a base member; positioning said base member adjacent a housing, said housing being formed with a plurality of slits, and said base member being positioned with said plurality of blades aligned with respective said slits; attaching a push-pull catheter to said base member; inserting said push-pull catheter through the lumen of a placement catheter for slidable movement therebetween; and attaching said placement catheter to said housing over said base member to create a chamber between said housing and said placement catheter, said base member being moveable in said chamber between a first position wherein said blades are withdrawn into said chamber and a second position wherein said blades extend from said chamber and from said housing for incising the stenosis.
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Specification