Surgical cannula having a variable length
First Claim
Patent Images
1. A cannula assembly for insertion through tissue, comprising:
- a housing defining a longitudinal bore and movably mounted to a cannula having a proximal end portion, a distal end portion, and defining a longitudinal bore aligned with the longitudinal bore in the housing, a cutting member mounted in the housing for cutting engagement with the proximal portion of the cannula, the housing movable between a first predetermined position and a second predetermined position relative to the cannula.
1 Assignment
0 Petitions
Accused Products
Abstract
A cannula assembly for insertion through tissue is provided having a housing and a cannula having a proximal end portion and a distal end portion. The cannula is supported at the proximal end portion by the housing. The cannula has a first predetermined length and is shortenable to a second predetermined length relative to the housing.
-
Citations
26 Claims
-
1. A cannula assembly for insertion through tissue, comprising:
a housing defining a longitudinal bore and movably mounted to a cannula having a proximal end portion, a distal end portion, and defining a longitudinal bore aligned with the longitudinal bore in the housing, a cutting member mounted in the housing for cutting engagement with the proximal portion of the cannula, the housing movable between a first predetermined position and a second predetermined position relative to the cannula. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
8. A cannula assembly for insertion through tissue into a body cavity which comprises:
-
a) a housing defining a longitudinal bore and movably mounted to a cannula having a proximal end portion, a distal end portion, and defining a longitudinal bore aligned with the longitudinal bore in the housing, a cutting member mounted in the housing for cutting engagement with the proximal portion of the cannula, the housing movable between a first predetermined position and a second predetermined position relative to the cannula; and b) an anchor disposed on the cannula, wherein the anchor is movable between a first configuration to facilitate introduction of the cannula assembly into such body cavity and a second configuration to facilitate retention of the cannula assembly in a predetermined position relative to such body cavity. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A cannula assembly for insertion through body tissue comprising:
-
a) a housing defining a longitudinal bore and having a cutting member, the housing being movably mounted to a cannula having a proximal end portion, a distal end portion, and defining a longitudinal bore aligned with the longitudinal bore in the housing, the cutting member mounted in the housing for cutting engagement with the proximal portion of the cannula, the housing movable between a first predetermined position and a second predetermined position relative to the cannula; and b) an anchor disposed adjacent the distal end portion of the cannula, the anchor and the housing mounted for relative movement to stabilize the cannula with respect to such body tissue gripped between the housing and the anchor. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
-
Specification