CA2584106A1 - Safety medical syringe with retractable needle - Google Patents

Safety medical syringe with retractable needle Download PDF

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Publication number
CA2584106A1
CA2584106A1 CA002584106A CA2584106A CA2584106A1 CA 2584106 A1 CA2584106 A1 CA 2584106A1 CA 002584106 A CA002584106 A CA 002584106A CA 2584106 A CA2584106 A CA 2584106A CA 2584106 A1 CA2584106 A1 CA 2584106A1
Authority
CA
Canada
Prior art keywords
plunger
barrel
needle holder
needle
distal end
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002584106A
Other languages
French (fr)
Other versions
CA2584106C (en
Inventor
Greg Janek
Vincent Runfola
Li Xian Yu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safety Medical International Inc
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2584106A1 publication Critical patent/CA2584106A1/en
Application granted granted Critical
Publication of CA2584106C publication Critical patent/CA2584106C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • A61M5/3234—Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
    • A61M2005/31516—Piston or piston-rod constructions, e.g. connection of piston with piston-rod reducing dead-space in the syringe barrel after delivery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • A61M5/347—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub rotatable, e.g. bayonet or screw
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/50—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
    • A61M5/5013—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
    • A61M5/502—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the piston
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/50—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
    • A61M5/508—Means for preventing re-use by disrupting the piston seal, e.g. by puncturing

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Environmental & Geological Engineering (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

A syringe includes a hollow barrel, a hollow plunger movable within the barrel and a needle assembly secured within and at a distal end of the barrel. The needle assembly includes a needle holder, a resilient member that biases the needle holder toward the proximal end opening of the barrel, and a retaining member releasably secured to the needle holder via a reduced material section. The retaining member maintains the needle holder at the distal end of the barrel against the bias of the resilient member. When the plunger is fully depressed within the barrel, the plunger engages the needle holder such that the retaining member is forced to break away and separate from the needle holder along the reduced material section to facilitate retraction of the needle holder and a needle secured to the needle holder into the retraction cavity disposed within the plunger.

Claims (23)

1. A syringe comprising:
a hollow barrel including an opening at a proximal end of the barrel, an opening at a distal end of the barrel and a fluid chamber disposed within the barrel;
a hollow plunger extending into the barrel via the proximal end opening and axially movable within the barrel toward and away from the distal end opening, wherein the plunger includes an end wall that is releasably secured to the plunger at an opening disposed at a distal end of the plunger and is movable from the plunger distal end opening during use of the syringe to facilitate access to a retraction cavity disposed within the plunger; and a needle assembly secured within and at a distal end of the barrel, the needle assembly including a needle holder, a resilient member biasing the needle holder toward the proximal end opening of the barrel, and a retaining member releasably secured to the needle holder via a reduced material section, wherein the needle holder includes a connector to secure a needle to the needle holder so as to permit the needle to extend through the distal end opening of the barrel;
wherein the plunger, retaining member and needle holder are configured such that the retaining member maintains the needle holder at the distal end of the barrel against the bias of the resilient member and, when the plunger is fully depressed within the barrel, the plunger engages the needle holder to force the end wall of the plunger within the plunger and to force the retaining member to break away and separate from the needle holder along the reduced material section so as to facilitate retraction into the retraction cavity of the end wall, the needle holder and a needle secured to the needle holder.
2. The syringe of claim 1, wherein the plunger and the needle assembly are further configured to facilitate an initial breaking away of the retaining member from the needle holder upon contact of the plunger distal end with at least one portion of the retaining member so as to force the at least one portion of the retaining member toward the barrel distal end to induce progressive breaking of the at least one portion of the retaining member from the needle holder along the reduced material section, while at least another portion of the retaining member remains attached to the needle holder and is prevented from moving toward the barrel distal end until the at least another portion breaks away from the needle holder.
3. The syringe of claim 1, wherein the retaining member comprises a retainer ring disposed about a proximal end of the syringe holder, and the reduced material section comprises at least one annular scored section defined between the retainer ring and the syringe holder.
4. The syringe of claim 3, wherein the retainer ring includes at least one protrusion extending from a surface of the retainer ring facing the plunger, and the plunger and needle assembly are further configured to initiate a progressive breaking away of the retainer ring from the needle holder along the annular scored section upon engagement of the at least one protrusion of the retainer ring with the plunger distal end in combination with movement of the plunger toward the barrel distal end.
5. The syringe of claim 1, wherein the plunger end wall comprises a plug frictionally engaging the plunger at the plunger distal end opening, and the plug is configured such that, upon depression of the plunger toward the barrel distal end, the plug engages with the needle holder to dislodge the plug from the plunger and facilitate retraction of the plug, needle holder and needle secured to the needle holder into the retraction cavity.
6. The syringe of claim 1, wherein the plunger end wall is releasably secured to the plunger distal end via a reduced material section, and the plunger is configured such that, when the plunger is fully depressed within the barrel, the plunger engages the needle holder to force the end wall of the plunger to break away and separate from the needle holder along the reduced material section connecting the end wall to the plunger and thereby facilitate retraction into the retraction cavity of the end wall, the needle holder and a needle secured to the needle holder into the retraction cavity.
7. The syringe of claim 1, wherein the barrel includes at least one protrusion extending from an interior surface portion of the barrel to engage and prevent the retaining member and needle holder from moving toward the proximal end of the barrel prior to initiation of retraction of the needle holder into the retraction cavity.
8. The syringe of claim 1, wherein the plunger includes a flange at a distal end of the plunger, and the barrel includes an extended section at the barrel proximal end to receive the plunger flange when the plunger is fully depressed within the barrel so as to prevent axial displacement of the plunger from the barrel after retraction of the needle holder into the retraction cavity.
9. The syringe of claim 8, further comprising a lock disposed within the barrel extended section to engage with the plunger flange upon full depression of the plunger within the barrel and retraction of the needle holder into the retraction cavity so as to prevent movement of the plunger proximal end from the barrel.
10. The syringe of claim 8, wherein the barrel extended section includes at least one cut-out section to expose the interior of the barrel extended section at the cut-out section.
11. The syringe of claim 1, wherein the needle holder and barrel include complimentary securing sections that mutually engage with each other when the needle holder is secured within the barrel to limit rotational movement of the needle holder with respect to the barrel.
12. The syringe of claim 11, wherein the complimentary securing sections include protrusions extending from an exterior surface portion of the needle holder and corresponding grooves disposed along an interior surface portion of the barrel, and the protrusions and grooves engage with each other when the needle holder is secured within the barrel to prevent rotational movement of the needle holder with respect to the barrel.
13. The syringe of claim 1, wherein the plunger end wall and a proximal end of the needle holder include complimentary engaging surfaces that engage with each other during movement of the plunger toward the barrel distal end.
14. The syringe of claim 13, wherein the engaging surface of the plunger end wall is convex and the engaging surface of the needle holder is concave.
15. The syringe of claim 14, wherein the plunger end wall includes at least one notch disposed near the engaging surface.
16. The syringe of claim 1, wherein the plunger includes a seal extending around a portion of the plunger near the plunger distal end and configured to compress a selected degree against an interior wall portion of the barrel upon full depression of the plunger within the barrel.
17. The syringe of claim 1, wherein the needle holder connector includes a male threaded connection that connects with a corresponding female threaded connector of a needle to be secured to the needle holder.
18. The syringe of claim 1, wherein the plunger includes a cap secured within an opening at the proximal end of the plunger, and the cap includes a flange disposed adjacent the plunger proximal end when the cap is secured within the proximal end opening.
19. The syringe of claim 1, further comprising:

a seal disposed around a portion of the plunger at the plunger distal end, wherein the seal further extends at least partially over the distal end of the plunger.
20. The syringe of claim 1, wherein the end wall of the plunger is releasably secured to the plunger via at least one protrusion disposed on one of the plunger and the end wall that engages with at least one complimentary groove disposed on the other of the plunger and the end wall.
21. The syringe of claim 1, further comprising:

A needle connector secured to the needle to releasably secure the needle to the connector of the needle holder, wherein the needle connector and the needle holder connector include complimentary engaging portions with at least one protrusion and corresponding groove that engage with each other when the needle connector is secured to the needle holder.
22. A syringe comprising:
a hollow barrel including an opening at a proximal end of the barrel, an opening at a distal end of the barrel and a fluid chamber disposed within the barrel;
a hollow plunger extending into the barrel via the proximal end opening and axially movable within the barrel toward and away from the distal end opening, wherein the plunger includes an end wall that is releasably secured to the plunger at an opening disposed at a distal end of the plunger and movable from the plunger distal end opening during use of the syringe to thereby facilitate access to a retraction cavity disposed within the plunger; and a needle assembly secured within and at a distal end of the barrel, the needle assembly including a needle holder, a resilient member that biases the needle holder toward the proximal end opening of the barrel, and securing means for releasably securing the needle holder at the barrel distal end against the bias of the resilient member;
wherein:
the plunger distal end and the securing means are configured such that, upon full depression of the plunger within the barrel, the securing means includes a first portion that is progressively torn from the needle holder and is forced toward the barrel distal end while at least one other portion of the securing means is prevented from moving toward the barrel distal end until the at least one other portion is torn from the needle holder after tearing of the first portion from the needle holder; and the plunger end wall, the needle holder and a needle secured to the needle holder are forced into the retraction cavity by the resilient member upon complete tearing from the needle holder of the first portion and the at least one other portion of the securing means.
23. A method of utilizing a syringe of the type including a hollow barrel with an opening at a proximal end of the barrel, an opening at a distal end of the barrel and a fluid chamber disposed within the barrel, a hollow plunger extending into the barrel via the proximal end opening and axially movable within the barrel toward and away from the distal end opening, the plunger including an end wall that is releasably secured to the plunger at an opening disposed at a distal end of the plunger, and a needle assembly secured within and at a distal end of the barrel, the needle assembly including a needle holder, a resilient member biasing the needle holder toward the proximal end opening of the barrel, a retaining member releasably secured to the needle holder via a reduced material section and a needle secured to the needle holder, the method comprising:

facilitating aspiration of fluid through the needle and into a fluid cavity within the barrel by moving the distal end of the plunger toward the proximal end of the barrel;
facilitating withdrawal of the aspirated fluid from the fluid cavity within the barrel by moving the distal end of the plunger toward the distal end of the barrel; and facilitating retraction of the needle holder within a retraction cavity defined within the plunger upon complete movement of the plunger into the barrel, wherein the plunger is configured to engage the needle holder upon complete movement of the plunger into the barrel such that the end wall of the plunger is forced within the plunger and the retaining member is forced to break away and separate from the needle holder along the reduced material section to facilitate retraction into the retraction cavity of the end wall, the needle holder and the needle secured to the needle holder into the retraction cavity.
CA2584106A 2004-10-14 2005-10-14 Safety medical syringe with retractable needle Active CA2584106C (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US61813704P 2004-10-14 2004-10-14
US60/618,137 2004-10-14
US62691604P 2004-11-12 2004-11-12
US60/626,916 2004-11-12
US65770005P 2005-03-03 2005-03-03
US60/657,700 2005-03-03
PCT/US2005/036535 WO2006044390A2 (en) 2004-10-14 2005-10-14 Safety medical syringe with retractable needle

Publications (2)

Publication Number Publication Date
CA2584106A1 true CA2584106A1 (en) 2006-04-27
CA2584106C CA2584106C (en) 2011-09-06

Family

ID=36203464

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2584106A Active CA2584106C (en) 2004-10-14 2005-10-14 Safety medical syringe with retractable needle

Country Status (11)

Country Link
US (2) US7803132B2 (en)
EP (2) EP1809353B1 (en)
JP (2) JP5138376B2 (en)
KR (1) KR101236572B1 (en)
CN (1) CN102247635B (en)
AT (1) ATE552875T1 (en)
BR (1) BRPI0516484A (en)
CA (1) CA2584106C (en)
ES (2) ES2386025T3 (en)
MX (1) MX2007004474A (en)
WO (1) WO2006044390A2 (en)

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