Endarterectomy catheter, and method of use thereof
First Claim
1. An endarterectomy catheter for removing obstructions from an artery comprising:
- a housing adapted for entry into the artery;
the housing including a forward end and a rearward end, and having an opening in the housing between the forward and rearward ends for receiving an obstruction;
a primary shear disposed within the housing and movable backward and forward across the opening;
a cable connected to the primary shear and operable from outside the artery for moving the primary shear forward and backward in the housing;
a spring for urging the primary shear forward to create a guillotine action upon movement of the primary shear; and
means for locating the housing within the artery.
2 Assignments
0 Petitions
Accused Products
Abstract
An endarterectomy catheter for removing obstructions from an artery comprises a cylindrical housing, the housing having an opening across which a primary shear is movable. The primary shear is razor sharp and cylindrical and movable by means of a cable and trigger backward and forward within the housing to excise obstructions that protrude into the opening. A guide wire positions the catheter in an artery.
The edge of the housing at the opening may be sharp to grip the obstruction and to assist in the cutting action of the primary shear. The shear is hollow and collects debris from the excised obstruction. Openings in the housing allow blood to pass through the body.
A method of removing obstructions from an artery includes locating a housing in an artery with an obstruction protruding into an opening in the housing, moving a razor sharp cylindrical shear across the opening to excise the obstruction, encapsulating the excised obstruction in the housing, and removing the housing from the artery.
60 Citations
15 Claims
-
1. An endarterectomy catheter for removing obstructions from an artery comprising:
-
a housing adapted for entry into the artery; the housing including a forward end and a rearward end, and having an opening in the housing between the forward and rearward ends for receiving an obstruction; a primary shear disposed within the housing and movable backward and forward across the opening; a cable connected to the primary shear and operable from outside the artery for moving the primary shear forward and backward in the housing; a spring for urging the primary shear forward to create a guillotine action upon movement of the primary shear; and means for locating the housing within the artery. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. An endarterectomy catheter for removing obstructions from an artery comprising:
-
a substantially cylindrical housing adapted for entry into the artery; the housing including a forward end and a rearward end, and having an opening in the housing between the forward and rearward ends for receiving an obstruction; a hollow, substantially cylindrical primary shear having first and second ends and snugly disposed within the housing and movable backward and forward across the opening; means connected to the primary shear and operable from outside the artery for moving the primary shear forward and backward; means for locating the housing within the artery; and
the housing including an inner tubular section extending from the first end to the second end, and an outer tubular section extending from the first end, the inner tubular section being disposed within the outer tubular section, and the primary shear being disposed between the inner tubular section and the outer tubular section. - View Dependent Claims (8)
-
-
9. An endarterectomy catheter for removing obstructions from an artery comprising:
-
a substantially cylindrical housing adapted for entry into the artery; the housing including a forward end and a rearward end, and having an opening in the housing between the forward and rearward ends for receiving an obstruction; a hollow, substantially cylindrical primary shear having first and second ends and snugly disposed within the housing and movable backward and forward across the opening; means connected to the primary shear and operable from outside the artery for moving the primary shear forward and backward; means for locating the housing within the artery; and
the housing including an inner tubular section extending from the forward end to the rearward end, and an outer tubular section extending from the rearward end partially towards the forward end so as to form an opening between the outer tubular section and the forward end, the opening extending around the housing, the inner tubular section being disposed within the outer tubular section, and the primary shear being disposed between the inner tubular section and the outer tubular section. - View Dependent Claims (10, 11)
-
-
12. An endarterectomy catheter for removing obstructions from an artery comprising:
-
a substantially cylindrical housing adapted for entry into the artery; the housing including a forward end and a rearward end, and having an opening in the housing between the forward and rearward ends for receiving an obstruction; a hollow, substantially cylindrical primary shear having first and second ends and snugly disposed within the housing and movable backward and forward across the opening; means connected to the primary shear and operable from outside the artery for moving the primary shear forward and backward; means for locating the housing within the artery; and
spring means disposed within the housing for urging the shear forward. - View Dependent Claims (13, 14)
-
-
15. A method of excising an obstruction from an artery, the method comprising:
-
locating within the artery a housing having an opening in the housing such that the obstruction is adjacent the opening, the housing having a blade movable across the opening and initially blocking the opening; moving the blade away from the opening so that at least part of the obstruction enters the opening; urging the blade forward across the opening with a spring to excise at least part of the obstruction with a guillotine action; encapsulating the excised part of the obstruction within the housing; and removing the housing from the artery.
-
Specification