WO2010088845A1 - Seringue de sécurité jetable munie d'une tête d'aiguille automatiquement rétractable - Google Patents

Seringue de sécurité jetable munie d'une tête d'aiguille automatiquement rétractable Download PDF

Info

Publication number
WO2010088845A1
WO2010088845A1 PCT/CN2010/000171 CN2010000171W WO2010088845A1 WO 2010088845 A1 WO2010088845 A1 WO 2010088845A1 CN 2010000171 W CN2010000171 W CN 2010000171W WO 2010088845 A1 WO2010088845 A1 WO 2010088845A1
Authority
WO
WIPO (PCT)
Prior art keywords
needle
tube
push rod
syringe
hook
Prior art date
Application number
PCT/CN2010/000171
Other languages
English (en)
Chinese (zh)
Inventor
蒋文俊
苏为祥
徐昊华
Original Assignee
浙江康康医疗器械有限公司
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 浙江康康医疗器械有限公司 filed Critical 浙江康康医疗器械有限公司
Publication of WO2010088845A1 publication Critical patent/WO2010088845A1/fr

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    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • 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
    • 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
    • A61M5/31501—Means for blocking or restricting the movement of the rod or piston
    • A61M2005/31508—Means for blocking or restricting the movement of the rod or piston provided 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
    • A61M5/508—Means for preventing re-use by disrupting the piston seal, e.g. by puncturing

Definitions

  • the present invention relates to the field of medical device technology, and more particularly to a single-use safety syringe in which a needle can be automatically retracted. Background technique
  • disposable sterile syringes for injecting liquid medicines and preventing vaccines has played a positive role in controlling iatrogenic infectious diseases and preventing cross-infection.
  • currently used disposable syringes have many deficiencies due to their unreasonable structure. Some existing disposable syringes are exposed after use, which is easy to cause sharp injuries, and there is a hidden danger of direct cross-infection. At the same time, the syringe after use is still intact, which facilitates the recovery of some criminals. That is, the syringe that has been discarded after use is reprocessed and reused, so that it is difficult to achieve a true one-time use.
  • a needle-returnable self-retracting disposable safety syringe comprising a needle, a syringe and a push rod
  • the needle comprising a needle tube and a core tube
  • the core tube a hollow core tube
  • the needle tube is fixedly embedded in the core tube
  • the upper end of the barrel is a small mouth end
  • the lower end is a large mouth end
  • the push rod is inserted into the barrel cavity from the large mouth end
  • the needle positioning sealing device comprises an intermediate tube and a buckle cap, wherein the middle tube is a hollow core tube, the inner cavity is provided with a hook and a sealing hoop, and the outer side is provided with an intermediate tube hook and a buckle groove, and the buckle cap is also
  • the utility model has a hollow core structure, and is provided with a buckle cap hook and a limiting ring, wherein the core tube of the needle is inserted into the inner cavity of the middle tube, and the hook of the middle tube abuts the bottom end of the core tube, and the sealing band Then, it is closely connected to the outer circumference of the core tube.
  • the middle tube is inserted into the inner cavity of the small end of the hollow needle barrel, and the upper part exposes the syringe barrel.
  • the middle tube is fastened and fastened to the buckle in the inner cavity of the syringe barrel through the buckle groove, and the buckle cap is fastened.
  • the tube wall is inserted into the inner tube inner cavity and is jacketed on the core tube, and the upper part of the core tube protrudes through the cap hole,
  • the buckle cap hook is placed outside the middle tube, and the buckle cap is fastened by the buckle hook hook and the middle tube hook, and the limit ring of the buckle cap is pressed against the upper boss of the core tube;
  • the needle retracting device comprises a compression spring, a tongue and a top plug, and a recovery cavity is arranged in the push rod, the compression spring is jacketed on the core tube, and the limiting ring of the buckle cap and the downward convexity of the core tube.
  • the tongue is placed on the intermediate tube and integrated with the hook, and the top plug is jammed at the upper end opening of the recovery chamber in the push rod.
  • the above-mentioned needle can automatically retract the single-use safety syringe, characterized in that it further comprises a push rod anti-backup device, wherein the push rod anti-backup device comprises a stop card basket and a stop chuck, and the stop card basket is fixed The card is snapped into the inner cavity of the lower end of the hollow cylinder, and the anti-return chuck is disposed outside the lower end of the push rod.
  • the push rod anti-backup device comprises a stop card basket and a stop chuck, and the stop card basket is fixed The card is snapped into the inner cavity of the lower end of the hollow cylinder, and the anti-return chuck is disposed outside the lower end of the push rod.
  • the above-mentioned needle can automatically retract the single-use safety syringe, characterized in that it further comprises a safety device, the safety frame of the safety device is fixedly connected to the lower end of the push rod, and comprises a safety hook groove fixedly integrated, and a safety hook head And insurance means.
  • the single-use safety syringe in which the needle is automatically retractable is characterized in that it further comprises a vent hole, and the vent hole is provided on the push rod.
  • the disposable safety syringe of the above-mentioned needle can be automatically retracted, characterized in that the cap of the buckle cap is provided with friction reducing teeth.
  • the above-mentioned needle can be automatically retracted by the single-use safety syringe, characterized in that the syringe, the push rod, the core tube, the middle tube, the buckle cap, the top plug and the safety frame are made of plastic material.
  • the disposable safety syringe of the above-described needle can be automatically retracted, characterized in that the syringe is made of a transparent plastic material.
  • the structure of the invention has reasonable structure design, convenient assembly, and is very suitable for automatic assembly of the production line, improves the automation degree and efficiency of the production, has good quality of automatic assembly and high qualification rate, and the invention does not change the traditional customary method when used.
  • the needle can be automatically retracted and hidden after the injection is completed, ensuring that the doctor and patient are protected from accidental injury of the needle tip, which is beneficial to realize the true one-time use of the syringe, avoid the spread of blood-borne diseases, and create more A hygienic and safe medical environment.
  • FIG. 1 is a schematic view of a single-use safety syringe with a protective sleeve that can be automatically retracted according to the present invention
  • 2 is a schematic cross-sectional view showing a single-use safety syringe with a needle retractable automatically according to Embodiment 1 of the present invention
  • Figure 3 is a schematic view showing the state of the needle retraction after the injection of the disposable safety syringe with the needle retractable automatically according to the present invention
  • Figure 4 is an enlarged schematic view showing the assembly structure of the core tube, the intermediate tube, the buckle cap and the compression spring of Figure 2;
  • Figure 5 is a schematic view of the insurable state of the safety frame
  • Figure 6 is a cross-sectional view showing the intermediate tube of the present invention.
  • Figure 7 is a cross-sectional view of the buckle cap of the present invention.
  • Figure 8 is a top plan view of Figure 7;
  • Figure 9 is a schematic cross-sectional view of the syringe of the present invention.
  • Figure 10 is a cross-sectional view showing the stop card basket of the present invention.
  • Figure 11 is a cross-sectional view showing the combination of the push rod and the safety frame (pushing handle) and the piston of the present invention
  • Figure 12 is a cross-sectional view showing the core tube of the present invention
  • Figure 13 is a cross-sectional view showing the top plug of the present invention.
  • a single-use safety syringe with a needle retractable automatically as shown in FIG. 1, FIG. 2, FIG. 3 and FIG. 4 includes a needle, a syringe 1 and a push rod 2, the needle including a needle tube 3 and a core tube 4, the core tube 4 is a hollow core tube, the upper end of the mouth is a small mouth, the lower end opening is a large mouth, the needle needle 3 of the needle and the core tube 4 are connected by the prior art, the needle tube 3 is fixedly embedded in the core tube 4, The push rod 2 is inserted into the inner cavity of the syringe 1 and is fixedly provided with a piston 1 1 .
  • the push rod 2 is inserted into the inner cavity from the large end (lower end) of the syringe 1 , and can be sealed by the piston 11 , which belongs to the prior art.
  • a needle protection cap 12 is attached to one end of the single-use safety syringe needle to which the needle can be automatically retracted.
  • the disposable safety syringe of the present invention further comprises a needle positioning sealing device comprising an intermediate tube 5 and a buckle cap 6, the intermediate tube 5 being a hollow core tube, the inner cavity being provided with a hook 501 and a seal
  • the hoop 503 has an intermediate tube hook 504 and a buckle groove 505 on the outer side.
  • the main body of the buckle cap 6 is also a hollow core tube, and a buckle cap 601 and a limiting ring 602 are disposed on an outer side thereof.
  • the core tube 4 of the needle is inserted into the inner cavity of the intermediate tube 5, and the hook 501 of the middle tube 5 abuts against the bottom end of the core tube 4, and the sealing band 503 is in close contact with the outer periphery of the core tube 4 to seal. Since the sealing ferrule 503 of the single-use safety syringe of the needle retractable by the needle of the present invention is designed as an integral member with the intermediate tube 5, not only the sealing effect is good, but also the production and assembly are very convenient.
  • the intermediate tube 5 is sleeved in the inner cavity of the small end (upper end) of the hollow needle barrel 1, and the upper part exposes the syringe 1.
  • the intermediate tube 5 is fixedly engaged with the syringe 1 , that is, the intermediate tube 5 is fixedly engaged with the buckle 101 in the inner cavity of the syringe 1 through the buckle groove 505 thereof.
  • the wall of the buckle cap 6 is inserted into the inner cavity of the intermediate tube 5, and is jacketed on the core tube 4.
  • the upper portion of the core tube 4 extends through the cap hole 603 to extend the buckle cap 6, and the buckle cap hook 601 is placed outside the intermediate tube 5.
  • the buckle cap 6 is engaged with the middle tube hook 504 by the buckle cap hook 601 to fasten the buckle cap 6 and the intermediate tube 5, and the limit ring 602 of the buckle cap 6 is pressed against the upper boss 401 of the core tube 4. .
  • the needle is pressed by the bottom end of the core tube 4 and the abutting of the hook 501 and the limit ring 602 against the upper boss 401 of the core tube 4, and is positioned on the syringe barrel 1.
  • the disposable safety syringe for automatically retracting the needle of the present invention further comprises a needle retracting device comprising a compression spring 7, a tongue 502 and a top plug 8, and a recovery chamber 201 is provided in the push rod 2 .
  • the compression spring 7 is jacketed on the core tube 4, and the limit ring 602 of the buckle cap 6 and the lower boss 402 of the core tube 4 are pressed together.
  • the tongue strip 502 is disposed on the intermediate tube 5 and integrally connected with the hook 501.
  • the top plug 8 is jammed in the opening portion of the upper end of the recovery chamber 201 in the push rod 2, and the opening is jammed.
  • the syringe 1, the push rod 2, the core tube 4, the intermediate tube 5, the buckle cap 6, the top plug 8 and the safety frame 9 are made of a plastic material, wherein the syringe 1 is a transparent plastic material. Since the needle can be automatically retracted, the safety syringe is used for the mounting connection between the above plastic components.
  • the assembly is very convenient and is very suitable for automatic assembly production of the assembly line.
  • the secondary use safety syringe further includes a push rod anti-backup device, and the push rod anti-backup device includes a stop card basket 10 and a stop chuck 202, and the anti-return card basket 10 is fixedly engaged at the large end of the hollow needle barrel 1 In the inner cavity, the stop chuck 202 is disposed outside the rear (lower) end of the push rod 2. As shown in FIG. 3, when the pusher 2 pushes the liquid medicine, the stop chuck 202 has been opened and retracted from the inner card 10, and enters the front (upper) portion of the anti-return card basket 10, so that the push rod 2 cannot be Pull back (below).
  • the embodiment is substantially similar to the embodiment 1, except that the single-use safety syringe with the needle retractable according to the invention further comprises a safety device, and the safety frame 9 of the safety device is fixedly connected to the lower end of the push rod 2,
  • the utility model comprises a safety hook groove 901 which is fixedly connected, a safety hook head 902 and an insurance finger 903.
  • the safety hook head 902 can be disengaged from the safety hook groove 901 (shown in Figure 1) and hooked (see Figure 2).
  • the safety frame 9 also serves as the push button for the pusher 2.
  • the safety hook head 902 and the safety hook groove 901 are in an unsecured state, when the push rod 2 is pushed by the hand, the insurance finger 903 is received by the large end (bottom) portion (or the back card basket 10) of the syringe 1
  • the topping of the push rod prevents the push rod 2 from continuing to advance, so that the needle retracting device is not activated, so as to prevent the needle from automatically retracting.
  • the safety finger 903 pressing the plastic material is elastically bent, the safety hook head 902 and the safety hook groove 901 are hooked, and the safety device does not have an insurance function.
  • Embodiment 2 is substantially similar to Embodiment 1, as shown in the figure, except that the disposable safety syringe of the needle retractable according to the present invention further includes a vent hole 203, and the vent hole 203 is provided on the push rod 2. Or on the safety frame 9 fixedly connected thereto, the recovery chamber 201 in the push rod 2 can communicate with the outside of the cavity without being sealed.
  • the disposable safety syringe of the needle retractable needle of the present invention is provided with a friction reducing tooth 604 on the cap hole 603 of the buckle cap 6, which can reduce the frictional force with the buckle cap 6 when the core tube 4 is retracted.

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

La présente invention a pour objet une seringue de sécurité jetable munie d'une tête d'aiguille automatiquement rétractable comprenant une tête d'aiguille, un cylindre d'aiguille (1) et une tige de poussée (2). La tête d'aiguille comprend un tube d'aiguille (3) et un tube central (4). Le tube central (4) est un tube creux. Le tube d'aiguille (3) est inséré de manière fixe dans le tube central (4). La tige de poussée (2) est insérée dans une cavité interne du tube d'aiguille (1). La seringue de sécurité jetable comprend également un dispositif de positionnement et d'étanchéité de la tête d'aiguille et un dispositif de rétractation de la tête d'aiguille. La tête d'aiguille peut être automatiquement rétractée et dissimulée après l'injection.
PCT/CN2010/000171 2009-02-08 2010-02-08 Seringue de sécurité jetable munie d'une tête d'aiguille automatiquement rétractable WO2010088845A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200910007801.X 2009-02-08
CN200910007801XA CN101480511B (zh) 2009-02-08 2009-02-08 一种针头可自动回缩的一次性使用安全注射器

Publications (1)

Publication Number Publication Date
WO2010088845A1 true WO2010088845A1 (fr) 2010-08-12

Family

ID=40877897

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2010/000171 WO2010088845A1 (fr) 2009-02-08 2010-02-08 Seringue de sécurité jetable munie d'une tête d'aiguille automatiquement rétractable

Country Status (2)

Country Link
CN (1) CN101480511B (fr)
WO (1) WO2010088845A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101480511B (zh) * 2009-02-08 2011-10-05 浙江康康医疗器械有限公司 一种针头可自动回缩的一次性使用安全注射器
CN103330976B (zh) * 2013-07-18 2015-05-13 徐昊华 一种安全注射器
CN105709309A (zh) * 2016-01-06 2016-06-29 徐昊华 一种智能型安全注射器

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6096005A (en) * 1989-07-11 2000-08-01 Mdc Investment Holdings, Inc. Retractable needle medical devices
WO2004084978A1 (fr) * 2003-03-24 2004-10-07 Safety Medical Products Limited Seringue amelioree a aiguille retractable
CN2748099Y (zh) * 2004-10-19 2005-12-28 丹阳市共创医疗器械科技有限公司 针头能自动回缩的安全注射器
CN2875468Y (zh) * 2006-03-08 2007-03-07 徐昊华 一种安全注射器
US20070129675A1 (en) * 2005-12-05 2007-06-07 Becton, Dickinson And Company Cutting element for a retracting needle syringe
CN2917670Y (zh) * 2006-07-01 2007-07-04 徐昊华 一次性安全注射器
CN101028548A (zh) * 2006-07-01 2007-09-05 徐昊华 一次性安全注射器
CN101274114A (zh) * 2008-02-04 2008-10-01 房东森 自动回缩安全注射器
CN101480511A (zh) * 2009-02-08 2009-07-15 徐昊华 一种针头可自动回缩的一次性使用安全注射器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6368303B1 (en) * 1999-10-15 2002-04-09 Becton, Dickinson And Company Retracting needle syringe
US6494863B1 (en) * 2001-10-15 2002-12-17 Retractable Technologies, Inc. One-use retracting syringe with positive needle retention
GB0222166D0 (en) * 2002-09-25 2002-10-30 Nmt Group Plc Needle unit
CN101318040B (zh) * 2008-06-05 2013-10-23 刘文杰 一种改进的用于针头回缩式安全注射器的筒式推杆及注射器
CN201453767U (zh) * 2009-02-08 2010-05-12 徐昊华 一种针头可自动回缩的一次性使用安全注射器

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6096005A (en) * 1989-07-11 2000-08-01 Mdc Investment Holdings, Inc. Retractable needle medical devices
WO2004084978A1 (fr) * 2003-03-24 2004-10-07 Safety Medical Products Limited Seringue amelioree a aiguille retractable
CN2748099Y (zh) * 2004-10-19 2005-12-28 丹阳市共创医疗器械科技有限公司 针头能自动回缩的安全注射器
US20070129675A1 (en) * 2005-12-05 2007-06-07 Becton, Dickinson And Company Cutting element for a retracting needle syringe
CN2875468Y (zh) * 2006-03-08 2007-03-07 徐昊华 一种安全注射器
CN2917670Y (zh) * 2006-07-01 2007-07-04 徐昊华 一次性安全注射器
CN101028548A (zh) * 2006-07-01 2007-09-05 徐昊华 一次性安全注射器
CN101274114A (zh) * 2008-02-04 2008-10-01 房东森 自动回缩安全注射器
CN101480511A (zh) * 2009-02-08 2009-07-15 徐昊华 一种针头可自动回缩的一次性使用安全注射器

Also Published As

Publication number Publication date
CN101480511B (zh) 2011-10-05
CN101480511A (zh) 2009-07-15

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