CN2577866Y - Self-destructed safety syringes - Google Patents

Self-destructed safety syringes Download PDF

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Publication number
CN2577866Y
CN2577866Y CN02258578U CN02258578U CN2577866Y CN 2577866 Y CN2577866 Y CN 2577866Y CN 02258578 U CN02258578 U CN 02258578U CN 02258578 U CN02258578 U CN 02258578U CN 2577866 Y CN2577866 Y CN 2577866Y
Authority
CN
China
Prior art keywords
guide rod
pushes away
rod
described syringe
self
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.)
Expired - Fee Related
Application number
CN02258578U
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Chinese (zh)
Inventor
陆永会
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.)
Individual
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
Priority to CN02258578U priority Critical patent/CN2577866Y/en
Application granted granted Critical
Publication of CN2577866Y publication Critical patent/CN2577866Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • 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
    • A61M5/5013—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
    • A61M2005/5026—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the piston allowing single filling of syringe
    • 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
    • A61M2005/5033—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the piston by use of an intermediate blocking member positioned between the syringe barrel and the piston rod to prevent retraction of the latter, e.g. toothed clip placed on the piston rod
    • 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
    • A61M5/5066—Means for preventing re-use by disconnection of piston and piston-rod
    • A61M2005/5073—Means for preventing re-use by disconnection of piston and piston-rod by breaking or rupturing the connection parts

Landscapes

  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (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

The utility model relates to the technology of a needle cylinder of a medical syringe, which comprises an outer cylinder, a core rod and a rubber plug bracket matched with a rubber plug, wherein, the core rod comprises a push handle, supporting ribs, a guiding rod and the rubber plug bracket which is connected to the lower end of the push handle by at least two supporting ribs. The guiding rod is connected to the rubber plug bracket and positioned on the inner sides of the supporting ribs, a gap is arranged between the upper end of the guiding rod and the bottom surface of the push handle, a retaining reed is arranged between the guiding rod and the outer cylinder, the outer end of the retaining reed is butted on the inner wall of the outer cylinder, and the inner end of the retaining reed is butted and punctured on the surface of the guiding rod. The utility model has the advantages of simple structure, low cost, high assembly efficiency and no application of forward push force. The utility model is a self-destroying syringe which is convenient for a medical worker to operate, and the self-destroying syringe is in a complete self-destroying mode.

Description

Self-destroy safety injector
Technical field
This utility model relates to the syringe technology of injector for medical purpose.
Background technology
For fear of the cross infection that injection for curing causes, the insider has designed various self-destroyed syringes, tries hard to by damaging the possibility of avoiding secondary to use after the shot voluntarily.But invention structure in the past is comparatively complicated mostly, the production cost height, and packaging efficiency is low, or pushes away reinforcing before having when using, and the medical worker is in use inconvenient.Particularly before self-locking, increase the self-locking of strength ability again, also increased patient's secondary misery simultaneously.Also have owing to the project organization reason, making it usually can not self-destruction.
Technical scheme
This utility model purpose be to design a kind of simple in structure, production cost is low, packaging efficiency is high, unmatched reinforcing, fully self-destruction, the simple, convenient self-destruction syringe of medical worker of pushing away.
This utility model comprises the plug support of urceolus, core bar, cooperation plug, core bar comprises and pushes away handle, brace rod, guide rod, plug support, the plug support is connected by at least two brace rods and pushes away the handle lower end, on the plug support, connect guide rod, guide rod is positioned at the brace rod inboard, and end distance pushes away the handle bottom surface and is provided with the gap on the guide rod, and the non-return reed is set between guide rod and urceolus, non-return reed outer end is butted on outer tube inner wall, the inner surface of stinging in guide rod of supporting.
When producing assembling, non-return reed mesopore is aimed at the guide rod top, the non-return reed is nested with on guide rod, and cooperate with the guide rod upper end.The urceolus of again core bar integral body being packed into, until plug with outside till tube bottom matches, make non-return reed spine be butted on outer tube inner wall.
When extracting medicament for the first time, by pulling back core bar, make plug leave the urceolus inner bottom part, medicament enters in the tube.Because non-return reed outer end is against on the outer tube inner wall, the non-return reed has elasticity, and makes guide rod can move backward smoothly (establish outer tube bottom for forward).Simultaneously, can guarantee that non-return reed origin-location in tube is constant, realize taking out the medicine process.At this moment, the non-return reed is against the guide rod surface.When promoting core bar forward, the core bar top guide bar promotes the outside tube bottom motion of non-return reed, promptly forward, finishes injection process.Thereby plug etc. is locked in outer tube bottom.Use as the secondary of will pulling back, the brace rod fracture pushes away handle, brace rod separates with plug support, guide rod.Thereby destroyed the overall structure of core bar, the medical worker need not compound action just can reach the self-destruction purpose.
By the enforcement of above technical scheme, demonstrated fully no forward thrust and reached the purpose of self-destruction effectively.Compared with prior art, have simple in structure, assembling speed is fast, yield rate is high, cost is low, easy to operate, patient does not have the secondary misery, effectively prevent advantages such as secondary use.
For increasing the coefficient of friction between guide rod and non-return reed, this utility model is along the surperficial uniform projection of guide rod length direction.
The segment section of this utility model on brace rod is provided with less cross section, forms easy fracture, by easy fracture, need not too great strength and can destroy brace rod.
Description of drawings
Fig. 1 is this utility model structural representation;
Fig. 2 is the left view behind the removal urceolus;
Fig. 3 is the vertical view of non-return reed.
Specific embodiment
Non-return reed 2 is a U-shaped, and periphery is provided with four spines, and mesopore is offered at the middle part, and this mesopore can be square hole, circular hole or tri-angle-holed or slotted eye, and four barbs 3 are connected the mesopore inner edge, barb triangular in shape or square or swallow-tail form or U-shaped.Four barbs 3 and spine in the same way, the position that barb 3 is connected with mesopore is the lowermost portion of non-return reed 2.
Plug 9 is engaged in the bottom of plug support 8, pushes away handle 1 and is connected with plug support 8 by two brace rods 10, and the root that is connected with plug support 8 at brace rod 10 is provided with the cross section and breaks muscle 7 less than whole brace rod cross section.
The supreme bottom of the guide rod 5 of the uniform triangle boss that is directed downwards 6 downwards of outer surface is connected the upper bottom surface of plug support 8.The upper end of guide rod 5 is pointed, leaves about 5mm distance apart from push rod 1.During installation, non-return reed 2 is connected the top of guide rod 5 by mesopore, and simultaneously, the spine of non-return reed 2 is towards pushing away the handle direction, and four spines of its periphery are butted on the inwall of urceolus 4, and barb 3 supports and stings in the boss 6 on the surface of guide rod.
Above-mentioned be distributed on guide rod 5 outer can be round boss or step cutting pattern or square step.

Claims (7)

1, self-destroy safety injector, the plug support that comprises urceolus, core bar, cooperation plug, it is characterized in that core bar comprises pushes away handle, brace rod, guide rod, plug support, the plug support is connected by at least two brace rods and pushes away the handle lower end, connects guide rod on the plug support, and guide rod is positioned at the brace rod inboard, end distance pushes away the handle bottom surface and is provided with the gap on the guide rod, the non-return reed is set between guide rod and urceolus, and non-return reed outer end is butted on outer tube inner wall, the inner surface of stinging in guide rod of supporting.
2,, it is characterized in that surperficial uniform projection along the guide rod length direction according to the described syringe of claim 1.
According to the described syringe of claim 2, it is characterized in that 3, described projection is a salient point, circular or square or triangle step.
4,, it is characterized in that the segment section cross section of brace rod is less according to the described syringe of claim 1.
5, according to the described syringe of claim 1, it is characterized in that non-return reed outer end is provided with towards the spine that pushes away the handle direction, the mesopore that guide rod cooperates is offered in the centre, establishes towards the barb that pushes away the handle direction in the inboard of this mesopore.
6,, it is characterized in that barb triangular in shape or square or swallow-tail form or U-shaped according to the described syringe of claim 5.
7,, it is characterized in that the guide rod cross section is triangular in shape square circular or oval according to the described syringe of claim 1.
CN02258578U 2002-11-15 2002-11-15 Self-destructed safety syringes Expired - Fee Related CN2577866Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN02258578U CN2577866Y (en) 2002-11-15 2002-11-15 Self-destructed safety syringes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN02258578U CN2577866Y (en) 2002-11-15 2002-11-15 Self-destructed safety syringes

Publications (1)

Publication Number Publication Date
CN2577866Y true CN2577866Y (en) 2003-10-08

Family

ID=33726275

Family Applications (1)

Application Number Title Priority Date Filing Date
CN02258578U Expired - Fee Related CN2577866Y (en) 2002-11-15 2002-11-15 Self-destructed safety syringes

Country Status (1)

Country Link
CN (1) CN2577866Y (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006105729A1 (en) * 2005-04-05 2006-10-12 Wuxi Yushou Medical Applicance Ltd. Disposable self-destructive syringe
WO2007036100A1 (en) * 2005-09-28 2007-04-05 Shandong Weigao Group Medical Polymer Co., Ltd Self-damaging syringe

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006105729A1 (en) * 2005-04-05 2006-10-12 Wuxi Yushou Medical Applicance Ltd. Disposable self-destructive syringe
US8784374B2 (en) 2005-04-05 2014-07-22 Zhong Feng Disposable self-destructive syringe
WO2007036100A1 (en) * 2005-09-28 2007-04-05 Shandong Weigao Group Medical Polymer Co., Ltd Self-damaging syringe

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C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee