Needle protector sheath

• US 5,562,636 A
• Filed: 07/15/1994
• Issued: 10/08/1996
• Est. Priority Date: 07/15/1994
• Status: Expired due to Term

• Current Assignee: Nxstage Medical Incorporated (Fresenius Medical Care AG)
• Original Assignee: Medisystems Technology Corporation
• Inventors: Utterberg, David S.
• Primary Examiner(s): Yasko, John D.
• Assistant Examiner(s): STRIGHT, RONALD K
• Application Number:
  US08/275,880
• Time in Patent Office: 816 Days
• Field of Search: 604/263, 604/198, 604/192, 604/177, 604/110, 604/174, 604/162, 604/197, 604/163, 604/171, 128/919
• 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• CPC Class Codes: A61M 25/0631 having means for fully covering the needle after its withdrawal, e.g. needle being withdrawn inside the handle or a cover being advanced over the needle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 25/0637 Butterfly or winged devices, e.g. for facilitating handling or for attachment to the skin
• CPC Class Codes: A61M 5/3271 with guiding tracks for controlled sliding of needle protective sleeve from needle exposing to needle covering position

Abstract

A needle protector sheath comprises a body having a top wall, sidewalls and open ends. A slot is formed in each sidewall to slidingly receive a needle wing extending through each of the slots. Typically the slots extend through one end of the protector sheath. The protector sheath also defines an open, bottom aperture extending from end to end of the body, to permit the sheath to be laterally applied to tubing connected to a winged needle and to be advanced to a position where the needle tip is recessed in the sheath and the needle wings extend through the slots.

Claims

1. A needle protector sheath which comprises a body having a top wall, sidewalls, and at least partially open ends;

a slot having an upper and a lower wall formed in each sidewall to slidingly receive a needle wing extending through each of said slots each slot extending through one of said ends;

said protector sheath defining an open, bottom aperture extending the entire length of said body, to permit said sheath to be laterally applied to tubing connected to a winged needle, and to be advanced to a position where the needle point is recessed in said sheath and the needle wings extend through said slots.

2. The needle protector sheath of claim 1 in which said body further defines a needle tip retaining wall formed between said top and sidewalls adjacent one end of said body.

3. The needle protector sheath of claim 2 in which said retaining wall is positioned substantially parallel to the longitudinal axis of said body, to define a closed pocket with the remainder of said body, for retention of a pointed tip of a needle which is carried within said protector sheath.

4. The needle protector sheath of claim 1 in which said slots curve toward said bottom aperture as they extend toward one end of the body.

5. The needle protector of claim 4 in which said slots extend through said one end of said body at the slot end nearest the bottom aperture.

6. The needle protector sheath of claim 1 in which detents are provided on said sidewalls adjacent said bottom aperture, to help retain a winged needle within said body.

7. The needle protector sheath of claim 1 in which a retaining wall is positioned at an acute angle to the longitudinal axis of said body, to define a closed pocket with the remainder of said body, for retention of a pointed tip of a needle which is carried within said protector sheath.

8. The needle protector sheath of claim 1 in which at least one manual grasping member extends outwardly from said top wall.

9. A set for conveying blood to or from a patient which comprises flexible tubing and a winged needle carried at one end of the tubing, said set carrying the needle protector sheath of claim 1 in a position to permit forward sliding of the needle protector sheath to enclose the entire winged needle with wings of said winged needle projecting out of said sidewall slots.

10. A needle protector sheath which comprises a body having a top wall, sidewalls, and open ends;

a slot having an upper and a lower wall formed in each sidewall to slidingly receive a needle wing extending through each of said slots, said protector sheath defining an open, bottom aperture extending the entire length of said body to permit said sheath to be laterally applied to tubing connected to a winged needle and to be advanced to a position where the needle point is recessed in said sheath and the needle wings extend through said slots, said slots sloping toward said bottom aperture as they extend toward one end of said body, and further in which said body defines a needle tip retaining wall formed between said top and sidewalls adjacent said one end of said body.

11. The needle protector sheath of claim 10 in which detents are provided on said side walls adjacent said bottom aperture, to help retain a winged needle within said body.

12. The needle protector of claim 11 in which said retaining wall is positioned substantially parallel to the longitudinal axis of said body, to define a closed pocket with the remainder of said body, for retention of a pointed tip of a needle which is carried within said protector sheath.

13. The needle protector of claim 12 in which said slots extend through one of said ends of said body at the slot end nearest the bottom aperture.

14. The needle protector of claim 13 in which an elongated anchor member extends forwardly from said needle protector sheath, to be manually pressed to retain said protector sheath as the needle is being withdrawn from the skin of a patient.

15. The needle protector sheath of claim 10 in which said slots are spaced from both ends of said body and curve to pass through the side of said needle protector sheath which defines said bottom aperture.

16. The needle protector sheath of claim 10 in which said retaining wall is positioned substantially parallel to the longitudinal axis of said body, to define a closed pocket with the remainder of said body for retention of a pointed tip of a needle which is carried within said protector sheath.

17. The needle protector sheath of claim 10 in which said retaining wall is positioned at an acute angle to the longitudinal axis of the body, to define a closed pocket with the remainder of said body, for retention of a pointed tip of a needle which is carried within said protector sheath.

18. The needle protector sheath of claim 10 in which at least one manual grasping member extends outwardly from said top wall.

19. The needle protector of claim 10 in which said slots extend through one of said ends of said body at the slot end nearest the bottom aperture.

20. A needle protector sheath which comprises a body having a top wall, sidewalls, and at least partially open ends, at least one slot having an upper and lower wall formed in at least one of said sidewalls to slidingly receive a needle wing extending through said slot, said protector sheath defining an open, bottom aperture extending the entire length of said body to permit said sheath to be laterally applied to tubing connecting to a winged needle and to be advanced to a position where the needle point is recessed in said sheath and said needle wing extends through said slot.

21. The needle protector tip of claim 20 in which said body further defines a needle tip retaining wall formed between said top and sidewalls adjacent one end of said body.

22. The needle protector sheath of claim 20 in which a plurality of said at least one slot comprises a plurality of slots that curve toward said bottom aperture as they extend toward one of said ends of the body.