Biopsy needle guard and guide

• US 4,022,191 A
• Filed: 06/04/1976
• Issued: 05/10/1977
• Est. Priority Date: 06/04/1976
• Status: Expired due to Term

• Current Assignee: Khosrow Jamshidi
• Original Assignee: Khosrow Jamshidi
• Inventors: Jamshidi, Khosrow
• Primary Examiner(s): Yasko, John D.
• Application Number:
  US05/692,632
• Time in Patent Office: 340 Days
• Field of Search: 128/2 B, 128/215, 128/216, 128/218 R, 128/218 N, 128/221, 128/239, 128/224, 128/348, 408/241 S
• US Class Current: 600/566
• CPC Class Codes: A61B 10/0283 with vacuum aspiration, e.g. caused by retractable plunger or by connected syringe A61B10/025, A61B10/0266 take precedence
• CPC Class Codes: A61B 2017/3443 with means for adjusting the length of a cannula

Abstract

A biopsy specimen gathering system has been developed which includes a biopsy needle having an aspirating chamber operatively coupled thereto. An elongated tubular sleeve forming a sleeve guard is provided, the sleeve guard having a closed base and an open top with the inner periphery of the upper end of the sleeve having a surface for sealingly engaging the outer periphery of the base of the aspirating chamber. The outer circumference of the shank of the sleeve guard has a plurality of spaced-apart circumferential grooves formed therein to provide spaced score grooves to a depth sufficient to permit the shank to be broken upon flexure thereof, thereby leaving an open ended sleeve firmly attached to the aspirating chamber and exposing a desired length of the tubular needle.

Claims

1. In combination with a biopsy specimen collecting needle having an aspirating chamber and a tubular needle coupled thereto at the proximal end of the needle, the needle having a sharpened tip at the distal end and an aspirating chamber receiving hub at the proximal end thereof, and having a shank with a bore extending therethrough disposed therebetween;

and sleeve guard means coupled to said tubular needle along said hub, with the guard enclosing and encapsulating said tubular needle therewithin;

said sleeve comprising;

a. an elongated tubular sleeve having a closed base and an open top, with the inner periphery of the upper end of said tubular sleeve having a surface for sealingly engaging the outer periphery of said needle hub; and

b. the outer circumference of the shank of said sleeve guard having a plurality of spaced apart circumferential grooves formed therein and disposed along that portion of the length of said sleeve guard shank enclosing said tubular needle, said circular grooves forming spaced apart score lines of a depth sufficient to permit said sleeve shank to be broken along said score lines upon flexure thereof to form an open ended sleeve exposing a predetermined portion of said tubular needle.

2. The combination as defined in claim 1 being particularly characterized in that said tubular sleeve is fabricated from polystyrene.

3. The combination as defined in claim 1 being particularly characterized in that the inner diameter of said sleeve guard is spaced outwardly from the outer diameter of said tubular needle so as to define an annular chamber therebetween.

4. The combination as defined in claim 1 being particularly characterized in that the inner periphery of the upper end of said tubular sleeve grippingly engages the outer peripheral surface of said needle hub.

5. The combination as defined in claim 1 being particularly characterized in that said circular grooves extend substantially through the cross-sectional wall thickness of said sleeve guard to leave a relatively thin annular cross-sectional portion intact.