Safety holder for pre-filled disposable syringe cartridge

• US 5,344,407 A
• Filed: 05/04/1993
• Issued: 09/06/1994
• Est. Priority Date: 05/04/1993
• Status: Expired due to Fees

• Current Assignee: Dana W. Ryan
• Original Assignee: Dana W. Ryan
• Inventors: Ryan, Dana W.
• Primary Examiner(s): Yasko, John D.
• Assistant Examiner(s): ELGART, VANITHA M
• Application Number:
  US08/057,536
• Time in Patent Office: 490 Days
• Field of Search: 604/192, 604/195, 604/263, 604/110, 604/187, 604/199, 604/197, 604/194, 604/196, 604/198, 604/231-232, 604/221-222, 604/218, 604/220, 604/242, 604/243, 128/766, 128/770, 128/919
• US Class Current: 604/192
• CPC Class Codes: A61M 2005/2407 from the rear
• CPC Class Codes: A61M 2005/247 with fixed or steady piercing means, e.g. piercing under movement of ampoule
• CPC Class Codes: A61M 2005/2488 via rotation, e.g. threads or bayonet
• CPC Class Codes: A61M 2005/31506 formed as a single piece, e.g. moulded
• CPC Class Codes: A61M 2039/042 Shrouds encircling the access needle preventing accidental needle-stick
• CPC Class Codes: A61M 5/24 Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic ampoules or carpules A61J1/06
• 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 safety holder for a pre-filled medical syringe cartridge includes a barrel tube with a hinged locking gate and a safety sleeve. In one embodiment of the invention, the safety sleeve is a separate piece having interior surface projections and the barrel tube is provided with longitudinal and circumferential tracks on its outer surface. The separate safety sleeve slides over the barrel tube so that the interior surface projections engage the tracks. The tracks are provided with various locking configurations which engage the interior surface projections of the sleeve to hold it in a non-safety position while the syringe is being used and lock it in a safety position after use. A second embodiment of the invention includes an integral non-movable safety sleeve for use with IV administration line ports.

Claims

1. A disposable safety holder for a disposable pre-filled medical syringe cartridge having a pre-filled ampoule with a needle hub and an attached needle, said holder comprising:

a) a hollow tube having a proximal end with a proximal opening which receives said syringe, and a distal opening;

b) an interior shoulder adjacent said distal opening, wherein said interior shoulder engages said needle hub;

c) hinge means coupled to a proximal end of said tube;

d) gate means coupled to said hinge means and provided with locking means, wherein said gate means is movable from a first position where said proximal opening is unobstructed to a second locking position covering said proximal opening, and said gate means has an opening smaller than said proximal opening, whereby said gate means engages said ampoule when said gate means is moved to said second position;

e) safety sleeve means extending from said hollow tube for covering said needle.

2. A disposable safety holder according to claim 1, wherein:

said safety sleeve means is an integral component extending from said distal opening of said tube.

3. A disposable safety holder according to claim 1, wherein:

said safety sleeve means is coaxially slidable relative to said tube.

4. A disposable safety holder according to claim 2, wherein:

said safety sleeve means has a distal opening with an interior diameter dimensioned to receive an IV administration line port.

5. A disposable safety holder according to claim 3, further comprising:

f) track means disposed on an exterior surface of said tube;

g) surface projection means disposed on an interior surface of said safety sleeve, wherein said surface projection means slidably engages said track means.

6. A disposable safety holder according to claim 5, wherein:

said track means comprises a first longitudinal track, a second longitudinal track, and a circumferential track,

said first longitudinal track extending from said distal opening a first longitudinal distance to a first point between said distal opening and said proximal opening,

said circumferential track extending from said first longitudinal track a first circumferential distance;

said second longitudinal track extending substantially parallel to said first longitudinal track from said circumferential track a second longitudinal distance to a second point between said distal opening and said first point,

said second longitudinal track comprising a pair of parallel walls extending from said circumferential track a third longitudinal distance to a third point between said first point and said second point and a pair of angled walls which angle towards each other as they extend from said third point to said second point, said angled walls having at least one notched opening.

7. A disposable safety holder according to claim 6, wherein:

said circumferential track is provided with a ramped floor between said first longitudinal track and said second longitudinal track, said ramped floor rising in a direction from said first longitudinal track toward said second longitudinal track.

8. A disposable safety holder according to claim 7, wherein:

said circumferential track has an angled wall portion adjacent said first longitudinal track such that said circumferential track is wider adjacent said first longitudinal track than adjacent said second longitudinal track.

9. A disposable safety holder according to claim 7, wherein:

said second longitudinal track is provided with a plurality of longitudinal ribs in a portion of said second longitudinal track which intersect said circumferential track.

10. A disposable safety holder according to claim 1, further comprising:

f) a finger flange surrounding said proximal opening, wherein said hinge means is coupled to said finger flange, and said gate means engages said finger flange in said second locking position.

11. A disposable safety holder according to claim 10, wherein:

said hinge means is coupled to said finger flange at a first edge of said finger flange and said gate means engages said finger flange at a second edge of said finger flange, said second edge of said finger flange being parallel to said first edge of said finger flange.

12. A disposable safety holder according to claim 11, wherein:

said hinge means is coupled to said gate means at a first edge of said gate means and said gate means is provided with a hook-like projection extending from a second edge of said gate means, said second edge of said gate means being parallel to said first edge of said gate means.

13. A disposable safety holder according to claim 1, wherein:

said gate means comprises finger flange means when said gate means is in said second position.

14. A disposable safety holder for a disposable pre-filled medical syringe cartridge having a pre-filled ampoule with a needle hub and an attached needle, said holder comprising:

a) a hollow tube having a proximal opening for receiving said syringe, and a distal opening for exposing said needle;

b) a sliding sleeve coaxial to said tube and slidable relative to said tube from a non-safety position wherein said needle is exposed to a safety position wherein said needle is covered by said sleeve, said sliding sleeve having an interior surface projection;

c) a first longitudinal track disposed on an exterior surface of said tube, with said first longitudinal track extending from said distal opening a first longitudinal distance to a first point between said distal opening and said proximal opening;

d) a circumferential track disposed on said exterior surface of said tube, with said circumferential track extending from said first longitudinal track a first circumferential distance; and

e) a second longitudinal track disposed on said exterior surface of said tube, with said second longitudinal track extending substantially parallel to said first longitudinal track from said circumferential track a second longitudinal distance to a second point between said distal opening and said first point, and said second longitudinal track comprising a pair of parallel walls extending from said circumferential track a third longitudinal distance to a third point between said first point and said second point and a pair of angled walls which angle towards each other as they extend from said third point to said second point, said angled walls having at least one notched opening, wherein

said interior surface projection engages said first longitudinal track when said sliding sleeve is assembled on said hollow tube, said interior surface projection engages said circumferential track prior to said sliding sleeve being slid forward on said hollow tube, said interior surface projection engages said second longitudinal track when said sliding sleeve is slid forward on said hollow tube to shield the needle of the pre-filled medical syringe, and said interior surface projection locks in said notch in said pair of angled walls to lock said sliding sleeve in a shielding position on said hollow tube with said hollow tube shielding said needle of the pre-filled medical syringe.

15. A disposable safety holder according to claim 14, wherein:

said circumferential track is provided with a ramped floor between said first longitudinal track and said second longitudinal track, said ramped floor rising in a direction from said first longitudinal track toward said second longitudinal track.

16. A disposable safety holder according to claim 15, wherein:

said circumferential track has an angled wall portion adjacent said first longitudinal track such that said circumferential track is wider adjacent said first longitudinal track than adjacent said second longitudinal track.

17. A disposable safety holder according to claim 15, wherein:

said second longitudinal track is provided with a plurality of longitudinal ribs in a portion of said second longitudinal track which intersect said circumferential track.

18. A method of using a disposable pre-filled medical syringe cartridge having a pre-filled ampoule with a plunger, a needle hub and an attached needle, said method comprising the steps of:

a) providing a hollow tube having a proximal opening for receiving said syringe and a distal opening and an interior shoulder adjacent said distal opening for engaging said needle hub;

b) inserting said syringe into said proximal opening so that said needle hub is engaged by said interior shoulder;

c) providing a lockable gate means having a central opening for receiving a plunger rod;

d) locking said gate means over said proximal opening so that said gate means engages said ampoule and biases said ampoule towards said needle hub to open fluid communication between said ampoule and said needle;

e) inserting said plunger rod through central opening of said gate means;

f) attaching said plunger rod to said plunger;

g) pushing said plunger into said central opening to force fluid in said ampoule through said needle.

19. A method according to claim 18, further comprising:

h) providing said hollow tube with a sliding safety sleeve slidable from a first position in which said needle is exposed for injection to a second position in which said needle is covered by said sleeve; and

i) after forcing said fluid through said needle, sliding said sleeve from said first position to said second position.

20. Method according to claim 18, further comprising:

h) providing an integral extension extending from said distal opening of said tube so that said needle is shielded by said extension; and

i) prior to forcing said fluid through said needle, inserting an IV administration line port into said extension so that it is pierced by said needle.