Catheter safety needle

• US 20050192545A1
• Filed: 02/18/2005
• Published: 09/01/2005
• Est. Priority Date: 02/26/2004
• Status: Active Grant

• Current Assignee: Medical Components, Inc.
• Original Assignee: Medical Components, Inc.
• Inventors: Voorhees, Earl W. Jr., Chesnin, Kenneth J., Stephens, John
• Granted Patent: US 7,556,617 B2
• Time in Patent Office: Days
• US Class Current: 604/263
• CPC Class Codes: A61M 25/0631 having means for fully covering the needle after its withdrawal, e.g. needle being withdrawn inside the handle or a cover being advanced over the needle
• CPC Class Codes: A61M 5/3269 guided by means not coaxially aligned with syringe barrel, e.g. channel-like member formed on exterior surface of syringe barrel for guiding a pushing rod connected to and displacing needle safety sheath

Abstract

A catheter insertion needle assembly is disclosed. The assembly includes a generally elongated body having a proximal end and a distal end, a needle guard disposed at the distal end of the body in a needle guard plane, a first locking member disposed proximate to the distal end of the body, and a second locking member disposed at the proximal end of the body. A slider assembly is also provided. The slider assembly includes a slider that is slidably disposed on the body. The slider assembly also includes a needle having an elongated needle body, a tip disposed at a distal end of the elongated needle body and a cannulating portion extending through the elongated needle body. The needle extends distally of the slider and through the needle guard. A first locking tab is releasably engageable with the first locking member and a second locking portion is lockably engageable with the second locking member. The first locking tab is releasable from the first locking member to allow the slider to slide between a distal position relative to the body wherein the tip extends distally of the needle guard and a proximal position relative to the body wherein the tip is disposed within the needle guard plane. When the slider is disposed at the proximal position, the second locking portion engages the second locking member to preclude the slider from sliding distally relative to the body.

Claims

1. A catheter insertion needle assembly comprising:

a generally elongated body having;

a proximal end and a distal end;

a needle guard disposed at the distal end of the body in a needle guard plane;

a first locking member disposed proximate to the distal end of the body; and

a second locking member disposed at the proximal end of the body; and

a slider assembly including;

a slider being slidably disposed on the body;

a needle having an elongated needle body, a tip disposed at a distal end of the elongated needle body and a cannulating portion extending through the elongated needle body, wherein the needle extends distally of the slider and through the needle guard;

a first locking tab releasably engageable with the first locking member; and

a second locking portion lockably engageable with the second locking member;

wherein the first locking tab is releasable from the first locking member to allow the slider to slide between a distal position relative to the body wherein the tip extends distally of the needle guard and a proximal position relative to the body wherein the tip is disposed within the needle guard plane and wherein, when the slider is disposed at the proximal position, the second locking portion engages the second locking member to preclude the slider from sliding distally relative to the body.

2. The catheter insertion needle assembly according to claim 1, wherein the first locking member comprises a fixed portion fixedly connected to the body and a free portion movable between a locked position wherein the first locking tab is engaged with the first locking member and an unlocked position wherein the first locking tab is disengaged from the first locking member.

3. The catheter insertion needle assembly according to claim 2, wherein the free portion is biased toward the locked position.

4. The catheter insertion needle assembly according to claim 1, wherein the slider assembly further comprises a luer lock disposed proximal of the needle, wherein the luer lock is in fluid communication with the cannulating portion of the needle.

5. The catheter insertion needle assembly according to claim 1, wherein the proximal end of the body further comprises a stop member to restrict travel of the slider proximally relative to the body.

6. The catheter insertion needle assembly according to claim 1, wherein the needle guard further comprises a polymer seal disposed within the needle guard plane.

7. The catheter insertion needle assembly according to claim 6, wherein when the tip is disposed within the needle guard plane, the tip is sealed within the polymer seal.

8. The catheter insertion needle assembly according to claim 6, wherein the polymer seal is a silicone seal.

9. The catheter insertion needle assembly according to claim 1, wherein the distal end of the body comprises a sheath retainer adapted to releasably retain a catheter insertion sheath having a tubular body extending therefrom.

10. The catheter insertion needle assembly according to claim 9, wherein the catheter insertion sheath comprises a tubular sheath body extending distally therefrom, and wherein, when the slider is in the distal position, the needle is disposed within the tubular sheath body such that the tip of the needle extends from the tubular sheath body.

11. The catheter insertion needle assembly according to claim 9 wherein, when the slider is in the proximal position, the catheter insertion sheath is releasable from the sheath retainer.

12. A catheter insertion needle assembly comprising:

a generally elongated body having;

a proximal end and a distal end;

a needle guard disposed at the distal end of the body in a needle guard plane;

a slider assembly comprising;

a slider being slidably disposed on the body;

a needle having an elongated needle body, a tip disposed at a distal end of the elongated needle body and a cannulating portion extending through the elongated needle body, wherein the needle extends distally of the slider and through the needle guard;

a first means for releasably retaining the slider in a distal position relative to the body; and

a second means for retaining the slider in a proximal position relative to the body.

13. The catheter insertion needle assembly according to claim 12, wherein the slider assembly further comprises a luer lock disposed proximal of the needle, wherein the luer lock is in fluid communication with the cannulating portion of the needle.

14. The catheter insertion needle assembly according to claim 12, wherein the proximal end of the body further comprises a stop member to restrict travel of the slider proximally relative to the body.

15. The catheter insertion needle assembly according to claim 12, wherein the needle guard further comprises a polymer seal disposed within the needle guard plane.

16. The catheter insertion needle assembly according to claim 15, wherein when the tip is disposed within the needle guard plane, the tip is sealed within the polymer seal.

17. The catheter insertion needle assembly according to claim 15, wherein the polymer seal is a silocone seal.

18. The catheter insertion needle assembly according to claim 12, wherein the distal end of the body comprises a sheath retainer adapted to releasably retain a catheter insertion sheath having a tubular body extending therefrom.

19. The catheter insertion needle assembly according to claim 18, wherein the catheter insertion sheath comprises a tubular sheath body extending distally therefrom, and wherein, when the slider is in the distal position, the needle is disposed within the tubular sheath body such that the tip of the needle extends from the tubular sheath body.

20. The catheter insertion needle assembly according to claim 18 wherein, when the slider is in the proximal position, the catheter insertion sheath is releasable from the sheath retainer.