Hypodermic syringe with means to destroy and safely store the cannula

• US 5,084,019 A
• Filed: 02/19/1991
• Issued: 01/28/1992
• Est. Priority Date: 11/30/1990
• Status: Expired due to Fees

• Current Assignee: Owen J. Meegan
• Original Assignee: Owen J. Meegan
• Inventors: Gartz, Kaj
• Primary Examiner(s): Rosenbaum, C. Fred
• Assistant Examiner(s): NOT, DEFINED
• Application Number:
  US07/657,529
• Time in Patent Office: 343 Days
• Field of Search: 604/110, 604/162, 604/167, 604/192, 604/195, 604/198, 604/240, 604/243, 604/263, 239/195, 239/198, 43/20
• US Class Current: 604/110
• CPC Class Codes: A61M 2005/3228 the needle being retracted by a member protruding laterally through a slot in the barrel, e.g. double-ended needles
• CPC Class Codes: A61M 2005/3282 using mechanical means, e.g. mills
• CPC Class Codes: A61M 2005/3284 Deformaton of needle by deflection or bending
• CPC Class Codes: A61M 5/322 Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston devices for protecting guide needles in combination with catheters A61M25/0612
• CPC Class Codes: A61M 5/3278 Apparatus for destroying used needles or syringes needle resheathing means destroying the needle A61M5/321
• CPC Class Codes: Y10S 128/919 Syringe, means to protect user

Abstract

A hypodermic syringe having a cannula with a point that can be safely destroyed and stored. A portion of the cannula is disposed within a hollow housing that has a reel fitted therein and a portion extends externally therefrom through an aperture in which it is slidably received. A portion of the cannula is disposed in the reel whereby to enable a user to turn the reel, wrap the cannula around the reel to destroy and store it. When the point is fully retracted into the housing, the point can snap against the inside of the housing and provides sensory indications that it is fully withdrawn. The axis of rotation of the reel is at right angles to the cannula.

Claims

1. A hypodermic syringe, said syringe including a barrel with a housing disposed at one end thereof and a plunger disposed wi thin said barrel and a cannula with a point, said syringe being characterized in that a portion of the cannula is disposed within said housing and a portion is disposed externally of said housing and that the housing has an aperture formed therein, said cannula being slidably disposed within said aperture relative to said housing and further characterized in that rotational means is disposed within said housing to retract the cannula into said housing and to receive and destroy it and to store the destroyed cannula;

means to enable the retraction of the cannula.

2. The syringe according to claim 1 wherein said housing is hollow and has internal walls whereby when said point is fully retracted through said aperture into said housing, the point snaps against said internal walls to provide sensory indications that it is fully withdrawn.

3. The syringe according to claim 1 wherein said means is a reel having an axis of rotation.

4. The device according to claim 3 wherein the axis of rotation of said reel is at right angles to said cannula.

5. A hypodermic syringe, said syringe having a cannula with a point, said syringe being characterized in that a portion of the cannula is disposed within a housing having a rotational means disposed therein and a portion of the cannula is securely disposed in said rotational means whereby to enable a user to twist said rotational means and wrap the cannula around the rotational means to destroy and store said cannula;

means to rotate said rotational means.

6. The syringe according to claim 5 wherein said housing is hollow and has internal walls whereby when said point is fully retracted into said housing, the point snaps against said internal walls to provide sensory indications that it is fully withdrawn.

7. The syringe according to claim 5 wherein said rotational means is a reel having an axis of rotation.

8. The device according to claim 7 wherein the axis of rotation of said rotational means is at right angles to said cannula.

9. The device according to claim 5 further including an aperture in said housing to slidably receive said cannula.

10. A medical device comprising:

a container adapted to hold a fluid, said container having an opening at an end thereof to provide for the passage of fluids from said container to a cannula;

a hollow housing having internal walls, a portion of said cannula being disposed within said housing and another portion extending outwardly therefrom, said housing being disposed at said end and said cannula being in fluid flow relationship with said opening;

an aperture disposed in said housing, said cannula being slidably disposed in said aperture;

means having an axis of rotation for retracting the outwardly extending portion of said cannula through said aperture and deforming it and then storing the deformed cannula, said means being disposed in said housing and holding said cannula relative said axis causing retraction of said cannula through said aperture and into said housing and around said means.

11. The device according to claim 10 wherein the axis of rotation of said means is at right angles to said cannula.

12. The device according to claim 10 wherein when said cannula is fully retracted into said housing it will snap against the internal walls and provide sensory indications that it is fully withdrawn.

13. A hypodermic syringe comprising:

means to contain a fluid, said means having a bottom wall and an opening in said bottom wall to provide for the passage of fluid from said means;

a cannula having an end disposed adjacent said bottom wall and having a point adapted to be inserted into a body;

a hollow housing having internal walls for said cannula, said housing having an aperture at an end thereof, said housing being disposed at the end of said fluid containment means adjacent to said opening, said cannula being slidably disposed in said aperture and extending outwardly therefrom;

means having an axis of rotation for deforming and storing the deformed cannula, said means being disposed in said housing and holding said cannula relative said axis the rotation of said means about said axis causing retraction of said cannula into said housing and around said means to store and deform it.

14. The syringe according to claim 13 further including sealing means disposed in said bottom wall around said aperture and adjacent said deforming and storing means.

15. The syringe according to claim 13 wherein the axis of rotation of said means is at right angles to said cannula.

16. The device according to claim 13 wherein when said point is fully retracted into said housing, the point snaps against said internal walls to provide sensory indications that it is fully withdrawn.

17. A disposable device for the use, destruction and storage of a cannula, said device comprising:

a cannula having a point and an end;

a housing for said cannula, said housing having an opening at one end in communication with a means to hold a fluid and an aperture at the other end to slidably receive the portion of the cannula having the pointed end, the portion having the pointed end extending from said opening;

means disposed inside said housing to hold said cannula, said means having an axis of rotation, the rotation of said means causing retraction of the pointed end of said cannula into said aperture to wrap said cannula around said means to destroy and store it;

means to enable rotation about said axis of rotation.

18. The device according to claim 17 wherein the axis of rotation of said means is at right angles to said cannula.

19. The device according to claim 17 wherein said housing is hollow and has internal walls, whereby when said pointed end is fully retracted into said housing, it will snap against said hollows walls to provide sensory indications that it is fully withdrawn.

20. The device according to claim 17 wherein a throughhole is disposed in said means whereby to hold said cannula.

21. The device according to claim 20 wherein said cannula is fixedly disposed in said throughhole.