Device for removing hypodermic needles from syringe barrels

• US 5,205,833 A
• Filed: 08/16/1991
• Issued: 04/27/1993
• Est. Priority Date: 02/22/1988
• Status: Expired due to Fees

• Current Assignee: Don J. Harsh, Kennalyn Howard, Linda R. Hills
• Original Assignee: Don J. Harsh, Kennalyn Howard, Linda R. Hills
• Inventors: Harsh, Don J., Howard, Kennalyn, Hills, Linda R.
• Primary Examiner(s): Rosenbaum, C. Fred
• Assistant Examiner(s): Polutta, Mark O.
• Application Number:
  US07/747,395
• Time in Patent Office: 620 Days
• Field of Search: 604/192, 604/198, 604/241, 604/242, 604/240, 604/263, 604/187, 604/110, 604/243, 128/919
• US Class Current: 604/240
• CPC Class Codes: A61M 5/344 using additional parts, e.g. clamping rings or collets
• CPC Class Codes: A61M 5/346 friction fit A61M5/344 takes precedence
• CPC Class Codes: A61M 5/347 rotatable, e.g. bayonet or screw A61M5/344 takes precedence
• CPC Class Codes: A61M 5/348 snap lock, i.e. upon axial displacement of needle assembly A61M5/344 takes precedence

Abstract

A generally cylindrical structure of rigid material is configured such that the device is capable of at least partially circumscribing at least a portion of a syringe barrel. Near one end of the cylindrical structure, the apparatus is provided with a structure for secure attachment to the base of a hypodermic needle.

The structure for secure attachment to the base of a hypodermic needle may vary depending on the specific structure of the apparatus and the type of needle used. In one embodiment of the device, the means of attachment comprises "Luer" threads on the interior surface of the cylindrical structure. Those threads, in turn, engage the base of a typical needle and the device provides twisting engagement with the needle base.

Using the device removal of the needle from the syringe barrel is simple and safe. The structure is simply pressed in a forward direction (i.e., away from the syringe barrel in the direction of the needle) until the needle becomes disengaged form the needle socket of the syringe barrel. Thus, the needle is removed without the necessity of encountering the needle point. In that the pushing action is relatively gentle, the needle detaches relatively slowly and has very little tendency to become a dangerous projectile.

Claims

1. An apparatus for removing needles from hypodermic syringes without re-capping said needles, said syringes comprising a barrel and a needle socket attached to one end of the barrel, the needle socket configured such that a needle can be removably attached to said needle socket, the apparatus comprising:

a structure capable of being slidably mounted over the exterior of at least a portion of a syringe barrel and over at least a portion of a needle socket, the structure having means for attachment to said needle such that said needle, while attached to said structure, is capable of being securely attached to the needle socket, said apparatus further comprising an opening configured such that the needle can be placed directly onto the needle socket of the syringe while said apparatus is positioned over the syringe barrel and needle socket, and when the needle is securely attached to the needle socket the attachment of the needle to the needle socket secures the apparatus to the syringe, such that if the apparatus is slid forward with respect to the syringe barrel, the apparatus causes the needle to disengage from the needle socket.

2. An apparatus for removing needles from hypodermic syringes as defined in claim 1 wherein said means of attachment to said needle is capable of securing the apparatus to the needle after the needle has been removed from the syringe barrel.

3. An apparatus for removing needles from hypodermic syringes as defined in claim 1 wherein said means for attachment to said needle comprise threads.

4. An apparatus for removing needles from hypodermic syringes as defined in claim 1 wherein said threads are configured such that they are capable of securely engaging a needle base.

5. An apparatus for removing needles from hypodermic syringes as defined in claim 1 wherein the exterior of said apparatus is generally cylindrical, such that the apparatus is capable of surrounding at least a portion of said syringe barrel.

6. An apparatus for removing needles from hypodermic syringes as defined in claim 1 wherein said means of attachment to said needle comprises teeth.

7. An apparatus for removing needles from hypodermic syringes as defined in claim 6 wherein said teeth are configured such that they are capable of snappingly engaging a needle base.

8. An apparatus for use in removing needles from hypodermic syringes without re-capping said needles, said hypodermic syringes comprising a syringe barrel and a needle socket, the apparatus comprising a structure having means for secure attachment to the base of a needle, the apparatus being configured such that it is capable of being slidably mounted over at least a portion of a syringe barrel and at least a portion of a needle socket, said apparatus further configured such that a needle can be mounted onto the apparatus while the apparatus is mounted over said syringe barrel and said needle socket, but such that the needle is capable of being directly attached to the needle socket of the syringe barrel, such that if said structure is slid forward with respect to the syringe barrel, the structure causes the needle to disengage from the needle socket.

9. An apparatus for use in removing needles from hypodermic syringes as defined in claim 8 wherein said means of attachment to the base of a needle comprises threads disposed on at least one end of said apparatus.

10. An apparatus for use in removing needles from hypodermic syringes as defined in claim 9 wherein said means of attachment comprises at least one tooth disposed on said apparatus such that it is capable of engaging a needle base.

11. An apparatus for use in removing needles from hypodermic syringes as defined in claim 8 wherein said cylindrical structure comprises two attached cylindrical sections.

12. An apparatus for use in removing needles from hypodermic syringes as defined in claim 8 wherein said apparatus is constructed of medical grade plastic.

13. A device for effecting removal of hypodermic needles from a hypodermic syringe, said hypodermic syringe having a syringe barrel and a needle socket, said device comprising:

a first generally cylindrical portion capable of circumscribing at least a portion of a syringe barrel;

a second generally cylindrical portion capable of circumscribing at least a portion of a needle socket, said second portion further comprising threads disposed within the interior of said second portion and capable of engagement with the base of a hypodermic needle;

means for securely joining said first and second cylindrical portions; and

means for securing a hypodermic needle to said second portion such that the needle, while secured to the device, is capable of being attached directly to a needle socket when the device is positioned on the syringe and such that the attachment between the needle and the needle socket provides means for securing the device to the syringe.

14. A device for effecting removal of hypodermic needles from a hypodermic syringe as defined in claim 13 wherein said first portion is configured such that it is slidable over at least a portion of a syringe barrel.

15. A device for effecting removal of hypodermic needles form a hypodermic syringe as defined in claim 14 wherein the device is configured such when the device is secured to a needle, and the needle is attached to a needle socket, sliding the device forward with respect to a syringe barrel results in disengagement of the needle from the needle socket.

16. A device for effecting the removal of hypodermic needles from a hypodermic syringe as defined in claim 13 wherein the device is configured such that when a needle is secured to the device and the needle is placed on a needle socket, the attachment of the needle to the needle socket secures the device to the syringe.

17. A device for effecting removal of hypodermic needles from a hypodermic syringe, said hypodermic syringe having a syringe barrel and a needle socket, said device comprising:

a first generally cylindrical portion capable of circumscribing at least a portion of a syringe barrel;

a second generally cylindrical portion capable of circumscribing at least a portion of a needle socket wherein said second portion further comprises means for snappingly engaging the base of a hypodermic needle;

means for securely joining said first and second cylindrical portions; and

means for securing a hypodermic needle to said second portion such that the needle, while secured to the device, is capable of being attached directly to a needle socket when the device is positioned on the syringe and such that the attachment between the needle and the needle socket provides means for securing the device to the syringe.