WO2011023147A4 - Locking and intercepting mechanism of the needle for a safety syringe - Google Patents

Locking and intercepting mechanism of the needle for a safety syringe Download PDF

Info

Publication number
WO2011023147A4
WO2011023147A4 PCT/CZ2010/000096 CZ2010000096W WO2011023147A4 WO 2011023147 A4 WO2011023147 A4 WO 2011023147A4 CZ 2010000096 W CZ2010000096 W CZ 2010000096W WO 2011023147 A4 WO2011023147 A4 WO 2011023147A4
Authority
WO
WIPO (PCT)
Prior art keywords
needle
plunger
base
conical extension
foot
Prior art date
Application number
PCT/CZ2010/000096
Other languages
French (fr)
Other versions
WO2011023147A3 (en
WO2011023147A2 (en
Inventor
Jan Zeman
Original Assignee
Kavalirek, Jan
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 Kavalirek, Jan filed Critical Kavalirek, Jan
Publication of WO2011023147A2 publication Critical patent/WO2011023147A2/en
Publication of WO2011023147A3 publication Critical patent/WO2011023147A3/en
Publication of WO2011023147A4 publication Critical patent/WO2011023147A4/en

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
    • A61M5/32—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    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • 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
    • A61M5/3221—Constructional features thereof, e.g. to improve manipulation or functioning
    • A61M2005/3223—Means impeding or disabling repositioning of used needles at the syringe nozzle
    • A61M2005/3224—Means to disalign the needle tip and syringe nozzle
    • 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
    • A61M5/3221—Constructional features thereof, e.g. to improve manipulation or functioning
    • A61M2005/323—Connection between plunger distal end and needle hub proximal end, e.g. stud protruding from the plunger

Abstract

The invention deals with a locking and intercepting mechanism of the needle for a safety syringe. The edge of the conical tapering for the introduction of the conical extension of the plunger there is an intercepting groove or narrowed bottom edge adapted for interaction with the perimeter edge of the base of this conical extension of the plunger while its principle is that the perimeter edge (2141 ) of the base (210) of the conical extension (21) of the plunger (2) is adapted for increased flexibility in the radial direction by means of creation of an annular groove (215) on the surface of the base (210) of the conical extension (21) of the plunger (2) in the vicinity of the perimeter edge (2141 ) of the base (210) of this conical extension (21), and/or by creation of an overlap (214) of the casing (213) over the base (210) of this conical extension (21 ) and/or by creation of radial grooving (2142) in the form of relief slots along the perimeter of the perimeter edge (2141) of the base (210) of this conical extension (21) of the plunger (2).

Claims

AMENDED CLAIMS received by the International Bureau on 07 June 2011 (07.06.2011) C L A I M S
1. A locking and intercepting mechanism of the needle (4) for a safety syringe containing a barrel (1 ) and in the barrel (1 ) containing an inserted connecting foot (41 ) or hub (3) of the needle (4) adapted for fitting of the connection foot (41 ) of the needle (4), where in the connection foot (41 ) or hub (3) of the needle (4) a cylindrical cavity (32) with conical tapering (31 ) is created, and the barrel (1 ) further contains an inserted plunger (2), fitted at its front with a conical extension (21) with a forward leading cylindrical protrusion (212) and where at the same time in the needle foot (41 ) or hub (3) adapted for fitting of the connection foot (41 ) of the needle (4) a transversal slot (33) is created in which a locking plate (34) is inserted that has an oval opening (341 ) in its centre and with its free ends (342), which are rounded or chamfered in a roof-like way, overlaps the outer surface of this needle foot (41) or hub (3) while there free ends (342) in the released condition of the inserted locking plate (34) always reach into a recess or groove (111 ) created in the inner surface of the syringe barrel (1 ) while on the inner surface of the needle foot (41 ) or needle hub
(3) , at the edge of the conical tapering (31 ) for the introduction of the conical extension (21 ) of the plunger (2) there is an intercepting groove or narrowed bottom edge adapted for interaction with the perimeter edge (2141 ) of the base (210) of this conical extension (21 ) of the plunger (2), c h a r a c t e r i z e d i n that the perimeter edge (2141 ) of the base (210) of the conical extension (21 ) of the plunger (2) is adapted for increased flexibility in the radial direction by means of creation of an annular groove (215) on the surface of the base (210) of the conical extension (21 ) of the plunger (2) in the vicinity of the perimeter edge (2141 ) of the base (210) of this conical extension (21 ), and by creation of an overlap (214) of the casing (213) over the base (210) of this conical extension (21 ) and by creation of radial grooving (2142) in the form of relief slots along the perimeter of the perimeter edge (2141 ) of the base (210) of this conical extension (21 ) of the plunger (2), and, in the same time, the locking plate (34), inserted in the transversal slot (33) of the foot (41 ) of the needle
(4) or of the hub (3), being adapted for lowered blocking forces during releasing
16 action, has at its free ends' (342). at the edges of the supporting surfaces, reaching into the recess or groove (111), created in these places in the inner surface of the syringe barrel (1), created rounding or chamfering, reaching from this supporting surface to the distance of 5% to 20% of the thickness of this locking plate (34).
2. The locking and intercepting mechanism according to claim 1, characterized in that on the free surface of the locking plate (34) facing the conical tapering (31) in the foot (41) or hub (3) of the needle (4) direct grooves (343) are created in the perpendicular direction to the longitudinal axis of the locking plate (34), namely always at least one direct groove (343) lying between the adjacent edge of the conical tapering (31 ) and the edge of the oval opening (341 ) in this locking plate (34).
3. The locking and intercepting mechanism according to claim 2, characterized in that the depth and width of these direct grooves (343) is in the range from 10% to 50% of the thickness of the locking plate (34).
17
PCT/CZ2010/000096 2009-08-28 2010-08-20 Locking and intercepting mechanism of the needle for a safety syringe WO2011023147A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ20090578A CZ2009578A3 (en) 2009-08-28 2009-08-28 Locking and gripping mechanism of needle for safety syringe
CZPV2009-578 2009-08-28

Publications (3)

Publication Number Publication Date
WO2011023147A2 WO2011023147A2 (en) 2011-03-03
WO2011023147A3 WO2011023147A3 (en) 2011-05-19
WO2011023147A4 true WO2011023147A4 (en) 2011-07-14

Family

ID=43628459

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CZ2010/000096 WO2011023147A2 (en) 2009-08-28 2010-08-20 Locking and intercepting mechanism of the needle for a safety syringe

Country Status (2)

Country Link
CZ (1) CZ2009578A3 (en)
WO (1) WO2011023147A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ303332B6 (en) * 2011-06-03 2012-08-01 Kavalírek@Jan Safety syringe with needle gripping mechanism

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4888002A (en) * 1988-08-30 1989-12-19 Braginetz Paul A Disposable shield medical syringe
US4995870A (en) * 1990-05-09 1991-02-26 Baskas Morris J Disposable syringe with retractable needle
US5211628A (en) * 1991-09-30 1993-05-18 Marshall John M Syringe with automatic retracting needle
US5417661A (en) * 1994-05-04 1995-05-23 Stringer; Jeffrey L. Safety syringe
US5405327A (en) * 1994-07-29 1995-04-11 Chen; Long-Hsiung Simplified safety syringe with retractable self-biased needle and minimized plunger
CZ302196A3 (en) * 1996-10-16 1997-01-15 Vladimir Benda Syringe with retractable needle
CZ316796A3 (en) * 1996-10-29 1998-05-13 Franz Burger Syringe with retractable needle
GB2341804B (en) * 1998-09-25 2003-02-12 David William Parker Improvements in or relating to hypodermic syringes
US6432088B1 (en) * 2000-06-06 2002-08-13 Wu-Shun Huang Safety syringe with a needle sleeve lock
US6461328B2 (en) * 2000-12-21 2002-10-08 Uniqsafe Medical Technology Group Ltd. Safety syringe
KR101424823B1 (en) * 2005-11-15 2014-08-01 글로벌 메디세이프 홀딩스 리미티드 Safety syringe with plunger locking means
CZ301122B6 (en) * 2007-02-26 2009-11-11 Zeman@Jan Syringe with protected needle
CZ17541U1 (en) 2007-02-26 2007-05-28 Zeman@Jan Syringe with protected needle
CN101332326A (en) * 2008-07-14 2008-12-31 骆星宇 Closed type re-use preventing once-used syringe
TWM360049U (en) * 2009-01-22 2009-07-01 zhuo-ying Chen Disposable safety syringe structure improvement

Also Published As

Publication number Publication date
CZ302349B6 (en) 2011-03-23
CZ2009578A3 (en) 2011-03-23
WO2011023147A3 (en) 2011-05-19
WO2011023147A2 (en) 2011-03-03

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