Biopsy needle
First Claim
1. A bone marrow biopsy device comprising a cannula member having upper proximal and lower distal ends and including a cannula open at the proximal and distal ends, and a handle connected to said cannula at the proximal end thereof, and a stylet member having upper proximal and lower distal ends and including a stylet having a pointed distal end, and a handle connected to said stylet at the proximal end thereof, said stylet being slidable in said cannula and removable from said cannula member, said stylet member handle including an upper wall having a length substantially greater than the width thereof, said upper wall having an upper surface generally arcuate in the lengthwise direction thereof and substantially flat in the widthwise direction thereof.
3 Assignments
0 Petitions
Accused Products
Abstract
A bone marrow biopsy device is provided that includes a cannula member and a stylet member each having arcuate handles having a length greater than the width thereof, a luer lock connector, and a handle locking arrangement. The cannula member handle has a recess which receives a collar on the stylet member handle. A radial pin and an axially extending luer lock connector are disposed in the recess. The collar has a slot which receives the pin for locking the stylet and cannula members together.
419 Citations
24 Claims
- 1. A bone marrow biopsy device comprising a cannula member having upper proximal and lower distal ends and including a cannula open at the proximal and distal ends, and a handle connected to said cannula at the proximal end thereof, and a stylet member having upper proximal and lower distal ends and including a stylet having a pointed distal end, and a handle connected to said stylet at the proximal end thereof, said stylet being slidable in said cannula and removable from said cannula member, said stylet member handle including an upper wall having a length substantially greater than the width thereof, said upper wall having an upper surface generally arcuate in the lengthwise direction thereof and substantially flat in the widthwise direction thereof.
- 20. A bone marrow biopsy device comprising a cannula member having upper proximal and lower distal ends and including a cannula open at the proximal and distal ends, and a handle connected to said cannula at the proximal end thereof, said cannula handle having an upper wall with a recess extending distally and coaxially with said cannula, and a stylet member having upper proximal and lower distal ends and including a stylet having a pointed distal end, and a handle connected to said stylet at the proximal end thereof, said stylet being slidable in said cannula and removable from said cannula member, said stylet member handle having an upper wall and a depending collar movable into said recess, pin means in said recess extending generally radially inwardly from a sidewall of said recess, a groove in the sidewall of said collar with an entrance to said groove at the distal end of said collar so that said pin means can enter said groove when said collar is inserted into said recess for holding said members together, said upper walls of said cannula and said stylet handles each having an upper surface with a length substantially greater than the width thereof and generally arcuate in the lengthwise direction and free of any protuberances extending upwardly thereform, the uppermost point on each of said upper surfaces being substantially at the longitudinal axis of said stylet.
Specification