Polypectomy snare having ability to actuate through tortuous path
First Claim
1. A medical device, comprising:
- a tubular sheath having a lumen extending therethrough;
a shaft slidably disposed in the lumen, the shaft including a proximal end and a distal end;
an end effector disposed adjacent the distal end of the shaft and coupled to the shaft by a crimp band; and
a coupling member coupled to the shaft and disposed proximally of the crimp band.
0 Assignments
0 Petitions
Accused Products
Abstract
This invention relates broadly to surgical instruments. More particularly, this invention relates to a surgical snare instrument for excising polyps. Preferably, the instrument includes a coupling member that may increase ability to actuate the snare. According to a preferred embodiment, the present invention comprises a surgical instrument for insertion through an endoscope having a handle and a working channel, said surgical instrument including an elongate flexible tubular sheath having proximal and distal ends; a flexible shaft extending through and axially movable relative to the sheath, said shaft having proximal and distal ends; an end effector coupled to or formed at said distal end of said shaft; and a coupling member disposed at said distal end of said shaft.
-
Citations
22 Claims
-
1. A medical device, comprising:
-
a tubular sheath having a lumen extending therethrough; a shaft slidably disposed in the lumen, the shaft including a proximal end and a distal end; an end effector disposed adjacent the distal end of the shaft and coupled to the shaft by a crimp band; and a coupling member coupled to the shaft and disposed proximally of the crimp band. - View Dependent Claims (2, 3, 4)
-
-
5. A medical device, comprising:
-
a tubular sheath having a lumen extending therethrough and an inside diameter; a shaft disposed in the lumen; an end effector coupled to the shaft by a crimp band; a coupling member coupled to the shaft and disposed adjacent the crimp band, the coupling member having an outside diameter; and wherein the inside diameter of the sheath and the outside diameter of the coupling member are substantially equal so as to increase the ability to actuate the end effector. - View Dependent Claims (6, 7, 8, 9, 10, 11)
-
-
12. A medical device, comprising:
-
a tubular sheath having a lumen extending therethrough; a shaft disposed in the lumen; an end effector coupled to the shaft by a crimp band; wherein the end effector is configured to shift between a first closed position wherein at least a portion of the end effector is disposed within the sheath and a second open position wherein the end effector is disposed distally of a distal end of the sheath; a coupling member coupled to the shaft and disposed adjacent the crimp band; and wherein at least a portion of the coupling member is disposed within the sheath when the end effector is in the second open position. - View Dependent Claims (13, 14, 15, 16, 17)
-
-
18. A medical devices, comprising:
-
a tubular sheath having a lumen extending therethrough; a shaft disposed in the lumen; a first handle assembly for rotating the shaft relative to the sheath; a second handle assembly for longitudinally moving the shaft relative to the sheath; a snare coupled to the shaft by a crimp band; and a shrink tube coupled to the shaft and disposed adjacent the crimp band, the shrink tube being arranged and configured to increase the ability to actuate the snare.
-
-
19. A medical device, comprising:
-
a flexible tubular sheath having a lumen extending therethrough; a shaft disposed in the lumen, the shaft being rotatable and longitudinally moveable within the sheath; a first assembly for rotating the shaft relative to the sheath; a second assembly for longitudinally moving the shaft relative to the sheath; a snare coupled to the shaft by a crimp band; and a coupling member coupled to the shaft and disposed adjacent the crimp band and within the lumen of the sheath. - View Dependent Claims (20, 21, 22)
-
Specification