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CA2394351A1 - Syringe with retractable needle assembly - Google Patents

Syringe with retractable needle assembly Download PDF

Info

Publication number
CA2394351A1
CA2394351A1 CA002394351A CA2394351A CA2394351A1 CA 2394351 A1 CA2394351 A1 CA 2394351A1 CA 002394351 A CA002394351 A CA 002394351A CA 2394351 A CA2394351 A CA 2394351A CA 2394351 A1 CA2394351 A1 CA 2394351A1
Authority
CA
Canada
Prior art keywords
syringe
needle
seal
assembly
hollow body
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
CA002394351A
Other languages
French (fr)
Other versions
CA2394351C (en
Inventor
Vance D. Campbell, Jr.
Joseph Nebolon
Robert D. Adams
Patrick Chng
April Marano-Ford
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.)
Futura Medical Technologies 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 CA2394351A1 publication Critical patent/CA2394351A1/en
Application granted granted Critical
Publication of CA2394351C publication Critical patent/CA2394351C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/32Needles; 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
    • A61M5/3205Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321Means for protection against accidental injuries by used needles
    • A61M5/322Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • A61M5/3234Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/32Needles; 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
    • A61M5/3205Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321Means for protection against accidental injuries by used needles
    • A61M5/322Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • A61M5/3234Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user
    • A61M2005/3241Needle retraction energy is accumulated inside of a hollow plunger rod

Landscapes

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

Abstract

A disposable, single use syringe comprises a hollow body (42), a retractable needle assembly (70) positioned in the hollow body, and a plunger assembly (100) including at least one guide track (128) between its ends. A retraction member (160) is releasably secured to one end of the frame and a catch member(105, 190), including a catch element (124), is positioned with a guide configured to travel in the plunger frame guide track. An elastic member (164) extends between the retraction member and the catch member. A retention assembly (120) depends from the opposite end of the plunger frame and is configured to receive and secure the catch element (124) and thereby tension the elastic member. The needle assembly and the retraction member have complimentary mating members (51), whereby the tension on the elastic member is released and the injection means is drawn into the hollow body after the needle assembly and the retraction member mate._ipc.

Claims (58)

1. A syringe comprising:
a hollow body having a substantially open end and a substantially closed end that defines an aperture;
a needle assembly comprising a needle, wherein the needle assembly is positioned in the hollow body and passes through the aperture; and a plunger assembly in the hollow body comprising:
an elongated frame portion having a first end and a sealing platform at a second end and defining at least one longitudinally extending guide track, wherein the sealing platform is sealingly engaged with the hollow body, a retraction member releasably secured to the sealing platform, wherein the retraction member is attachable to the needle assembly;
a catch member having a guide configured to travel in the guide track;
and an elastic member extending between the retraction member and the catch member, wherein the elastic member is put in tension by moving the plunger assembly toward the substantially closed end of the hollow body, and wherein tension on the elastic member is released, thereby retracting the needle into the hollow body, after the retraction member attaches to the needle assembly.
2. The syringe of claim 1 wherein the catch member has a catch element, and wherein the plunger assembly includes a retention assembly located proximate the first end of the elongated frame portion and configured to receive the catch element to restrain the catch member against movement away from the first end of the elongated frame portion and thereby to hold the elastic member in tension.
3. The syringe of claim 2 wherein the hollow body includes a shoulder proximate the open end against which the catch member abuts to prevent passage of the catch member into the hollow body beyond the shoulder.
4. The syringe of claim 3 wherein the elongated frame portion initially moves substantially freely relative to the catch member such that the elongated frame portion is moved into the hollow body to cause the catch element to be received by the retention assembly.
5. The syringe of claim 4 wherein an audible signal is produced upon receiving of the catch element by the retention assembly.
6. The syringe of claim 2 wherein the catch element comprises a catch tip.
7. The syringe of claim 2 wherein the retention assembly comprises a plurality of retention teeth, and wherein the catch element comprises a catch tooth that engages with one of the retention teeth.
8. The syringe of claim 7 wherein the retention teeth are arranged along a surface of the elongated frame portion, substantially parallel to a longitudinal axis of the elongated frame portion.
9. The syringe of claim 7 wherein one of the retention teeth, after receiving the catch tooth, inhibits movement of the catch tooth away from the first end of the elongated frame portion beyond said one of the retention teeth.
10. The syringe of claim 2 wherein the catch element is initially secured to the retention assembly such that the elastic member is in a preloaded condition.
11. The syringe of claim 2 wherein the retraction member includes a retention member that releasably secures the retraction member to the sealing platform prior to retraction of the needle.
12. The syringe of claim 11 wherein the sealing platform includes a hollow integral shaft and wherein the retraction member is in sealing engagement with the hollow shaft prior to retraction of the needle.
13. The syringe of claim 12 wherein the retention member includes an annular collar about a circumference of the retraction member.
14. The syringe of claim 13 wherein the annular collar abuts an annular ring positioned in the hollow shaft.
15. The syringe of claim 12 wherein the retraction member comprises a mandrel and the retention member comprises a mandrel seal that is positioned between a first end of the hollow shaft and the mandrel at a seal position, and that is in sealing engagement with the mandrel and the first end of the hollow shaft prior to retraction of the needle.
16. The syringe of claim 15 wherein the mandrel has an irregular surface located at the seal position, wherein the irregular surface abuts the mandrel seal and is sealingly engaged by the mandrel seal prior to retraction of the needle.
17. The syringe of claim 16 wherein said irregular surface comprises a groove in the mandrel about a circumference of the mandrel.
18. The syringe of claim 11 wherein the retention member comprises an O-ring.
19. The syringe of claim 15 wherein the hollow shaft has a second end, wherein the first end has a cross-sectional area that is smaller than a cross-sectional area of the second end.
20. The syringe of claim 19 wherein the mandrel seal moves with the mandrel from a first position within the first end of the hollow shaft to a second position within the second end of the hollow shaft.
21. The syringe of claim 20 wherein the mandrel seal is no longer in sealing engagement with the hollow shaft after the mandrel seal moves from the first position to the second position.
22. The syringe of claim 20 wherein the mandrel seal is no longer in sealing engagement with the mandrel after the mandrel seal moves from the first position to the second position.
23. The syringe of claim 20 wherein forward movement of the plunger frame after the retraction member attaches to the needle assembly moves the mandrel from the first position to the second position, thereby moving the mandrel seal from the first position to the second position.
24. The syringe of claim 20 wherein said movement of the mandrel seal from the first position to the second position reduces holding forces between the hollow shaft and the mandrel.
25. The syringe of claim 20 wherein the mandrel seal is compressed while in the first position and has an inner seal area that becomes larger as the mandrel seal moves from the first position to the second position, such that the inner seal area is large enough while in the second position that the retraction member may retract through the inner seal area.
26. The syringe of claim 12 wherein the plunger assembly includes a stop which sealingly engages a second end of the hollow shaft.
27. The syringe of claim 26 wherein the stop is formed integral with the elastic member.
28. The syringe of claim 2 wherein the sealing platform includes an elastomeric sealing member which sealingly engages the hollow body.
29. The syringe of claim 28 wherein the sealing member includes first and second annular seals spaced apart by a recessed area, wherein each annular seal sealingly engages the hollow body.
30. The syringe of claim 29 wherein the hollow body includes at least one ramp member proximate the closed end which engages the first annular seal upon substantial compression of the plunger assembly and breaks the sealing engagement of the first annular seal with the hollow body whereby a trapped fluid may pass into the recessed area.
31. The syringe of claim 2 wherein the first end of the elongated frame portion includes a thumb pad.
32. The syringe of claim 31 wherein upon substantial compression of the plunger assembly, the thumb pad enters the open end of the hollow body and sealingly engages the hollow body.
33. The syringe of claim 32 wherein the hollow body includes an internal annular lip adjacent the open end which engages and retains the thumb pad.
34. The syringe of claim 2 wherein the closed end of the hollow body includes a truncated cone in which the needle assembly is positioned and a convex surface about the truncated cone.
35. The syringe of claim 34 wherein depression of the plunger assembly creates a forward force which causes the convex surface to flex away from the truncated cone.
36. The syringe of claim 35 wherein the flexing occurs simultaneously or just after attachment of the retraction member to the needle assembly.
37. The syringe of claim 2 wherein a tapered portion on the plunger assembly contacts the hollow body proximate to the closed end, urges the hollow body outwardly, and assists retraction of the needle.
38. The syringe of claim 2 wherein the closed end of the hollow body comprises:
a truncated cone in which the needle assembly is positioned; and a needle assembly retainer proximate the closed end of the hollow body, wherein the needle assembly retainer releasably secures the needle assembly partially within the truncated cone.
39. The syringe of claim 38 wherein the needle assembly retainer comprises a retaining finger.
40. The syringe of claim 38 wherein the needle assembly retainer comprises a plurality of retaining fingers disposed about a circumference of a larger end of the truncated cone, wherein a first end of each of the retaining fingers is attached to the hollow body.
41. The syringe of claim 40 wherein each of the retaining fingers has a retaining lip on a second end of the finger, and wherein at least one of the fingers is bendable between a closed position and an open position, such that an area defined by the second ends of the fingers in the closed position is smaller than an area defined by the second ends of the fingers in the open position, such that a holding force exerted by the needle assembly retainer on the needle assembly is lower when the needle assembly retainer is in the open position than when the needle assembly retainer is in the closed position.
42. The syringe of claim 41 wherein each of the retaining lips is adjacent to the needle assembly, such that the needle assembly will contact at least one of the retaining lips if a force tending to push the needle assembly toward the open end of the hollow body is applied when the needle assembly retainer is in the closed position.
43. The syringe of claim 41 wherein the retaining lips define an inner dimension that is smaller than an outer dimension of the needle assembly.
44. The syringe of claim 41 wherein the needle assembly retainer is moved from the closed position to the open position by depression of the plunger assembly.
45. The syringe of claim 41 wherein the plunger assembly contacts and pushes against at least one of the retaining fingers as the plunger assembly is moved into the hollow body, thereby moving the needle assembly retainer into the open position such that the needle assembly can pass through an opening defined by the retaining fingers.
46. The syringe of claim 41 wherein the needle assembly retainer is moved into the open position at approximately the same time that the retraction member attaches to the needle assembly.
47. The syringe of claim 41 wherein the needle assembly retainer remains in the closed position when no external forces are applied to the needle assembly retainer.
48. The syringe of claim 2 wherein the retraction member comprises a first geometric configuration and the needle assembly comprises a second geometric configuration, wherein the first geometric configuration is attachable to the second geometric configuration.
49. The syringe of claim 2 wherein the needle assembly includes a conical projection and a needle seal that sealingly engages the conical projection and the hollow body prior to retraction of the needle.
50. The syringe of claim 49 wherein the needle assembly includes a needle seal lip that engages and retains the needle seal between the conical projection and the hollow body prior to retraction of the needle.
51. The syringe of claim 49 wherein the hollow body closed end includes a truncated cone in which the needle assembly is positioned and wherein the needle seal sealingly engages the conical projection and the truncated cone.
52. The syringe of claim 51 wherein the truncated cone has a smaller end and a larger end located between the smaller end and the open end of the hollow body, wherein the smaller end comprises a needle seal retainer that retains the needle seal between the truncated cone and the conical projection.
53. The syringe of claim 52 wherein the needle seal retainer comprises a plurality of needle seal arms disposed about the circumference of the larger end of the truncated cone, wherein a first end of each of the needle seal arms is attached to the larger end of the truncated cone and wherein a second end of at least one of the needle seal arms is moveable.
54. The syringe of claim 53 wherein at least one of the needle seal arms is bendable between a closed position and an open position, wherein an area defined by the second ends of the needle seal arms in the closed position is smaller than an area defined by the second ends of the needle seal arms in the open position.
55. The syringe of claim 54 wherein the needle seal sealingly engages the truncated cone and the conical projection when the needle seal retainer is in the closed position, and wherein the sealing engagement is released when the needle seal retainer is in the open position.
56. The syringe of claim 54 wherein at least one of said needle seal arms remains in the closed position when no external forces are applied to the needle seal arms.
57. A method of manufacturing a device including at least two components of a first material which is rigid when cured, at least two of the rigid components including an attachment area, and at least one component of a second material which is elastomeric when cured, the method comprising the steps of:

a) providing first mold cavities defining the rigid components;

b) filing the first mold cavities with the first material;

c) allowing the first material to substantially cure into a substantially rigid assembly;

d) positioning the substantially rigid assembly relative to a second mold cavity which defines the elastomeric component such that at least two attachment components are positioned within the second mold cavity;

e) filing the second mold cavity with the second material whereby it covers at least a portion of each attachment portion;

f) allowing the second material to at least substantially cure; and g) detaching at least one of the rigid components having an attachment portion at least partially covered by the second material from the substantially rigid assembly such that it can be moved relative to the at least one other rigid component having an attachment portion at least partially covered by the second material to tension the elastomeric component.
58. A method of manufacturing a plunger for use with a syringe including a retractable needle assembly, the plunger including a frame component, an elastic member, a first elastomeric attachment member and a retractable member configured to mate with the needle assembly and including a second attachment member, the method including the steps of:

a) providing first mold cavities defining the frame component, the first elastomeric attachment member and the retractable member including the second attachment member;

b) filing the first mold cavities with material which is substantially rigid when cured;

c) allowing the material of step b to substantially cure into a substantially rigid assembly;

d) positioning the substantially rigid assembly relative to a second mold cavity which defines the elastic member such that the first and second attachment members are positioned within the second mold cavity;

e) filing the second mold cavity with material which is elastomeric when cured whereby it covers at least a portion of each attachment member;

f) allowing the second material to at least substantially cure; and g) detaching the retraction member from the substantially rigid assembly such that it can be moved relative to the first attachment member to tension the elastic member.
CA002394351A 1999-12-13 2000-12-13 Syringe with retractable needle assembly Expired - Fee Related CA2394351C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
USPCT/US99/29541 1999-12-13
PCT/US1999/029541 WO2001041843A1 (en) 1999-12-13 1999-12-13 Syringe with retractable needle assembly
PCT/US2000/033897 WO2001041830A2 (en) 1999-12-13 2000-12-13 Syringe with retractable needle assembly

Publications (2)

Publication Number Publication Date
CA2394351A1 true CA2394351A1 (en) 2001-06-14
CA2394351C CA2394351C (en) 2009-11-17

Family

ID=22274289

Family Applications (2)

Application Number Title Priority Date Filing Date
CA002394328A Abandoned CA2394328A1 (en) 1999-12-13 1999-12-13 Syringe with retractable needle assembly
CA002394351A Expired - Fee Related CA2394351C (en) 1999-12-13 2000-12-13 Syringe with retractable needle assembly

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA002394328A Abandoned CA2394328A1 (en) 1999-12-13 1999-12-13 Syringe with retractable needle assembly

Country Status (5)

Country Link
EP (2) EP1239904A1 (en)
JP (2) JP2003516195A (en)
AU (2) AU2178700A (en)
CA (2) CA2394328A1 (en)
WO (2) WO2001041843A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7044931B2 (en) 2000-12-13 2006-05-16 Hypoguard Usa Inc. Syringe with retractable needle assembly
US6676641B2 (en) * 2001-09-05 2004-01-13 Futura Medical Technologies, Inc. Retractable hypodermic syringe
SG117401A1 (en) * 2002-01-11 2005-12-29 Systems Automation S Pte Ltd F An apparatus and process for manufacturing a medical safety device
US7393343B2 (en) 2002-07-02 2008-07-01 Hypoguard Usa Inc. Retractable hypodermic syringe
US7494479B2 (en) * 2002-09-16 2009-02-24 Medsolve Technologies, Inc. Syringe with retractable needle assembly
EP1728530A1 (en) * 2005-06-01 2006-12-06 Medsafe ASA Injection syringe with automatically retractable needle
US7476215B2 (en) * 2005-09-21 2009-01-13 Choi Fat Lam Automatic retractable safety syringe
WO2012147415A1 (en) * 2011-04-28 2012-11-01 テルモ株式会社 Injection needle assembly and drug injection device
AU2015248899B2 (en) 2014-04-14 2019-11-28 Swedish Orphan Biovitrum Ab (Publ) Syringe plunger rod

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0000862A1 (en) 1977-08-20 1979-03-07 Passavant-Werke Ag Floor drainage gully for wet areas
US4904242A (en) * 1987-04-29 1990-02-27 Kulli John C Phlebotomy set with safety retracting needle
FR2673844A1 (en) * 1991-03-15 1992-09-18 Gherrak Elie Syringe with incorporated retractable needle
IT1248456B (en) * 1991-03-18 1995-01-19 Profarm Spa SELF-LOCKING SYRINGE
US5267961A (en) * 1991-04-03 1993-12-07 Shaw Thomas J Nonreusable syringe with safety indicator
US5211628A (en) * 1991-09-30 1993-05-18 Marshall John M Syringe with automatic retracting needle
US5209739A (en) 1992-06-23 1993-05-11 Leon Talalay Hypodermic needle
US5320606A (en) * 1993-03-17 1994-06-14 Jore Matthew B Single use hypodermic safety syringe
US5395337A (en) * 1993-08-31 1995-03-07 Clemens; Anton H. Needle retraction system
US5458576A (en) * 1993-12-22 1995-10-17 Habley Medical Technology Corp. Safety syringe with retracting needle
NL9401173A (en) * 1994-07-15 1996-02-01 A P I S Medical Bv Pre-filled syringe assembly.
US5836917A (en) 1995-01-10 1998-11-17 Specialized Health Products, Inc. Self retracting medical needle apparatus and methods
US5533975A (en) * 1995-10-06 1996-07-09 Lu; Wen-Chin Safety syringe with reliably externally connectable and internally retractable self-biased needle
US5693023A (en) 1996-11-15 1997-12-02 Adventec, Inc. Syringe with retractable needle assembly
US5993417A (en) * 1998-01-06 1999-11-30 Yerfino; Daniel Alberto Disposable syringe with an automatically retractable hypodermic needle
US5938641A (en) * 1998-01-07 1999-08-17 Villanueva; George Safety syringe
US5971964A (en) * 1999-01-14 1999-10-26 Donaldson; Neil Retractable syringe

Also Published As

Publication number Publication date
JP2003521974A (en) 2003-07-22
WO2001041830A2 (en) 2001-06-14
CA2394328A1 (en) 2001-06-14
WO2001041843A1 (en) 2001-06-14
EP1239900A4 (en) 2007-06-06
JP2003516195A (en) 2003-05-13
EP1239900A2 (en) 2002-09-18
WO2001041830A3 (en) 2001-09-27
CA2394351C (en) 2009-11-17
AU2579201A (en) 2001-06-18
AU782441B2 (en) 2005-07-28
WO2001041830A8 (en) 2002-06-20
AU2178700A (en) 2001-06-18
EP1239904A1 (en) 2002-09-18

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