Safety sheath device

• US 5,490,841 A
• Filed: 07/29/1994
• Issued: 02/13/1996
• Est. Priority Date: 07/29/1994
• Status: Expired due to Fees

• Current Assignee: Robert M. Landis
• Original Assignee: Robert M. Landis
• Inventors: Landis, Robert M.
• Primary Examiner(s): Yasko, John D.
• Application Number:
  US08/282,608
• Time in Patent Office: 564 Days
• Field of Search: 604/192, 604/187, 604/263, 604/198, 128/919
• US Class Current: 604/110
• CPC Class Codes: A61M 2005/3217 Means to impede repositioning of protection cap from needle covering to needle uncovering position, e.g. catch mechanisms
• CPC Class Codes: A61M 5/3202 Devices for protection of the needle before use, e.g. caps A61M5/50 takes precedence; for infusion spikes A61M5/1626; protectors for sharps A61B50/3001
• CPC Class Codes: A61M 5/3216 Caps placed transversally onto the needle, e.g. pivotally attached to the needle base
• CPC Class Codes: Y10S 128/919 Syringe, means to protect user

Abstract

A needle protection device is disclosed having an elongate housing with a longitudinal needle entrance portion defined between two housing side walls. At least one hinged door member is provided extending across the entrance portion to enclose the needle within the housing. In one embodiment the housing has a trap door attached by a resilient living hinge to one side wall and extending across the entrance portion to engage a door stop on the opposite side wall, so that the door is able to rotate about the hinge toward the first side wall to allow the needle to enter the housing, but is limited by the door stop in the degree of rotation away from the first side wall, thereby preventing a needle within the housing from exiting through the entrance portion. In alternative embodiments the door may extend less than the entire length of the housing and/or a needle engaging member, such as a needle engaging hook, may be provided to engage and retain the needle within the housing.

Claims

1. In a needle protection device having an elongated housing pivotal to enclose a needle, the housing including a longitudinal slot for receiving a needle therethrough as the housing is pivoted to enclose the needle, the improvement comprising at least one elongated door member hingedly attached to the housing and extending across the longitudinal slot over substantially the entire length of the longitudinal slot, the door member being biased to close the longitudinal slot after a needle has entered the housing through the longitudinal slot.

2. The needle protection device of claim 1 wherein the elongate door member comprises a trap door extending from a first side wall of the housing to a second side wall of the housing, the trap door abutting a door stop on the second side wall.

3. The needle protection device of claim 1 wherein the at least one elongate door member comprises a pair of elongate doors each extending from a side wall of the housing, the doors overlapping to close the housing.

4. The needle protection device of claim 1 wherein the elongate door member is attached to the housing by a resilient living hinge.

5. A surgical sharp protection device comprising:

an elongate housing having a first end hingedly associated with the base of a surgical sharp, the housing having a rear wall portion, first and second side wall portions defining an elongate surgical sharp entrance slot therebetween extending away from the base of the surgical sharp, and at least one door member hingedly attached to at least one side wall and extending across substantially the entire length of the entrance slot.

6. The device of claim 5 wherein the at least one door member comprises a trap door attached by a resilient door hinge member to the first side wall and extending adjacent the second side wall.

7. The device of claim 6 wherein the resilient door hinge is a living hinge.

8. The device of claim 6 wherein the housing, trap door and resilient hinge are integrally molded.

9. The device of claim 6 wherein the second side wall includes a door stop.

10. The device of claim 9 wherein the trap door is rotatable about the door hinge toward the first side wall, the door stop limiting rotation of the door about the door hinge away from the first side wall.

11. The device of claim 5 wherein the surgical sharp is a surgical needle.

12. The device of claim 5 wherein the housing further includes a needle engaging hook member.

13. The device of claim 5 wherein the at least one door member comprises a pair of doors, each door hingedly attached by a resilient door hinge to one of the side walls.

14. In combination:

a surgical needle attached to a needle base;

an elongated housing having a first proximal end adapted to be hingedly associated with the needle base, the elongate housing extending distally away from the needle base and having side walls defining an elongate entrance slot to receive the needle therethrough as the housing is pivoted relative to the needle base, the housing including at least one door member extending across at least the distal portion of the entrance slot adjacent the needle tip.

15. The combination of claim 14 wherein the housing is hingedly rotatable into alignment with the needle, the needle entering the housing through the elongate entrance slot past the door member.

16. The combination of claim 14 wherein the at least one door member comprises a trap door attached by a resilient door hinge member to the first side wall and extending adjacent the second side wall.

17. The combination of claim 16 wherein the resilient door hinge is a living hinge.

18. The combination of claim 16 wherein housing, trap door and resilient hinge are integrally molded.

19. The combination of claim 16 wherein the second side wall includes a door stop.

20. The combination of claim 19 wherein the trap door is rotatable about the door hinge toward the first side wall, the door stop limiting rotation of the door about the door hinge away from the first side wall.

21. The combination of claim 20 wherein the needle enters the housing through the door as the housing is rotated into alignment with the needle, the needle contacting the door and urging the door toward the first side wall about the door hinge, the door being biased toward contact with the door stop to thereafter prevent the needle from leaving the housing after the needle has entered the housing through the slot and the door is biased toward the door stop.

22. The combination of claim 14 wherein the housing further includes a needle engaging hook member.

23. The combination of claim 14 wherein the at least one door member comprises a pair of doors, each door hingedly attached by a resilient door hinge to one of the side walls.

24. The combination of claim 14 wherein the elongate housing is hingedly attached to a luer fitting engagable with a needle hub.

25. The combination of claim 14 wherein the elongate housing is hingedly attached to a needle hub.

26. The combination of claim 14 wherein the elongate housing is hingedly attached to a syringe.

27. The combination of claim 14 wherein the elongate housing is hingedly attached to a vacutainer.

28. The combination of claim 14 wherein the elongate entrance portion is tapered to urge the needle toward the center of the housing.

29. A method of reducing the likelihood of contact with a needle or matter thereon, comprising:

providing a needle protection device having an elongated housing pivotal to enclose a needle, the housing including a longitudinal slot to receive the needle therethrough and at least one elongate door member extending over substantially the entire length of the slot hingedly attached to the housing and biased to close the slot;

rotating the housing into alignment with the needle so that the needle enters the housing through the longitudinal slot past the door member, the door member resiliently closing the slot to contain the needle within the housing after the needle has passed the door member.

30. A method of reducing the likelihood of contact with a needle or matter thereon, comprising:

providing a surgical needle attached to a needle base with an elongate housing having a first end adapted to be hingedly associated with the needle base, the elongate housing extending distally away from the needle base and having first and second side walls defining an elongate needle entrance slot, the housing including at least one door member hingedly attached to the first side wall and extending across at least a portion of the entrance slot;

rotating the housing into alignment with the needle so that the needle enters the housing through the entrance slot past the door member, the door member resiliently closing at least the distal portion of the entrance slot to enclose at least the tip portion of the needle.