WO2011094977A1 - Seringue de dosage à autodestruction - Google Patents

Seringue de dosage à autodestruction Download PDF

Info

Publication number
WO2011094977A1
WO2011094977A1 PCT/CN2010/073300 CN2010073300W WO2011094977A1 WO 2011094977 A1 WO2011094977 A1 WO 2011094977A1 CN 2010073300 W CN2010073300 W CN 2010073300W WO 2011094977 A1 WO2011094977 A1 WO 2011094977A1
Authority
WO
WIPO (PCT)
Prior art keywords
syringe
wall
elastic
support ring
barrel
Prior art date
Application number
PCT/CN2010/073300
Other languages
English (en)
Chinese (zh)
Inventor
林作钱
Original Assignee
温岭市千禧光医疗器械有限公司
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 温岭市千禧光医疗器械有限公司 filed Critical 温岭市千禧光医疗器械有限公司
Publication of WO2011094977A1 publication Critical patent/WO2011094977A1/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
    • A61M5/50—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
    • A61M5/5066—Means for preventing re-use by disconnection of piston and 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

Definitions

  • the invention belongs to a medical device, in particular to a self-destructing syringe for quantitative use.
  • the technical problem to be solved by the present invention is to provide a quantitative self-destructing syringe with convenient installation of the needle seat and the syringe, firm fixation, and small residual amount of the liquid medicine.
  • the present invention adopts the following technical solutions:
  • a quantitative self-destructing syringe comprising a hollow syringe, a push rod sliding in the syringe, and a rubber plug mounted on the front end of the push rod, the front end of the syringe being mounted with a needle seat, wherein: the needle seat is provided There is a support ring, and a cavity for the passage of the injection liquid is arranged in the support ring, and the support ring is closely matched with the taper of the front end of the syringe to maintain a liquid seal between the support ring and the syringe, and the front end of the needle seat and the syringe is made of an elastic card The solid structure is fixed.
  • the front end of the syringe is injection-molded with a syringe casing and a sleeve inner sleeve, and the support ring is placed in the sleeve of the syringe, and the outer wall of the support ring is matched with the inner wall of the sleeve of the syringe and the taper is closely matched, the elasticity
  • the fastening structure specifically comprises an elastic claw integrally molded with the needle seat and a collar provided on the inner wall of the front end of the sleeve of the syringe, and the elastic claw extends downward into the gap between the sleeve of the syringe and the sleeve of the syringe, and the elasticity
  • the foot on the outside of the lower end of the claw matches the collar on the sleeve of the syringe
  • the inner side of the lower end of the elastic claw abuts against the outer wall of the sleeve of
  • the front end of the syringe is injection-molded with a syringe casing and a sleeve inner sleeve, and the support ring is placed in the sleeve of the syringe, and the outer wall of the support ring is matched with the inner wall of the sleeve of the syringe and the taper is closely matched, the elasticity
  • the fastening structure specifically comprises an elastic clamping foot integrally molded with the needle seat and a collar disposed on the inner wall of the front end of the syringe casing, the elastic clamping leg extending outward in the horizontal direction, the outer side of the clamping leg and the collar on the syringe casing Cooperating, the inner side of the card foot is offset by the needle seat which is integrally molded with the card foot, so that the card foot and the collar are fastened.
  • the support ring is placed in the syringe, the outer wall of the support ring is matched with the inner wall of the syringe and the taper is closely matched.
  • the elastic fastening structure specifically comprises an elastic claw integrally molded with the needle seat and disposed on the outer wall of the syringe On the upper collar, the elastic claw extends downward and wraps around the outer side of the collar, and the elastic claw elasticizes the foot of the lower end of the elastic claw and the collar under the action of its own elastic force.
  • the inner wall of the inner sleeve of the syringe is formed with an elastic pawl that gathers toward the center, and the pusher is formed with a frustum that can be engaged with the elastic pawl after injection.
  • the push rod is provided with a round table, and the inner wall of the syringe is provided with a ring of push rods to pull back against the boss of the round table.
  • the needle seat is clamped to the syringe by the pin on the support ring, and on the other hand, the support ring is closely matched with the taper of the syringe, so that the needle seat and the syringe are firmly fixed, so as to maintain the liquid between the two. seal.
  • the push rod is provided with a round table. When the boss on the inner wall of the needle cylinder abuts against the round table of the push rod, the push rod cannot be pulled back, thereby achieving the purpose of controlling the liquid dose.
  • Figure 1 is a schematic view showing the structure of the syringe shown in the first embodiment
  • FIG. 2 is a schematic structural view of a syringe shown in Embodiment 1;
  • Figure 3 is a cross-sectional view of the hub of the first embodiment
  • Figure 4 is a side elevational view of the hub shown in the first embodiment
  • Figure 5 is a plan view of the hub shown in the first embodiment
  • Figure 6 is a partial enlarged view of Figure 1;
  • Figure 7 is a cross-sectional view showing the state of the push rod of the syringe of the second embodiment before being used;
  • Figure 8 is a cross-sectional view showing the state of the syringe as shown in the second embodiment;
  • Figure 9 is a cross-sectional view showing the state in which the syringe of the second embodiment is injected;
  • Figure 10 is a cross-sectional view showing the self-destruction state of the syringe shown in the second embodiment;
  • Figure 11 is a partial enlarged view of Figure 7;
  • Figure 12 is a partial enlarged view of Figure 8.
  • Figure 13 is a cross-sectional view of the syringe of the third embodiment
  • Figure 14 is a partial enlarged view of Figure 13 .
  • a quantitative self-destructing syringe comprises a hollow needle cylinder 1, a push rod 2 sliding in the syringe barrel 1 and a rubber plug 3 mounted on the front end of the push rod 2, and a needle seat is mounted on the front end of the syringe barrel 1.
  • the needle seat 4 is provided with a support ring 5
  • the support ring 5 is provided with a lumen 8 for the passage of the injection liquid (see Fig. 3)
  • the support ring 5 closely matches the taper of the front end of the syringe, so that the support ring 5 and the syringe 1
  • the liquid seal is maintained between the needle holder 4 and the front end of the barrel being fixed by the elastic fastening structure.
  • the front end of the syringe is injection-molded with a syringe casing 111 and a syringe inner sleeve 112.
  • the syringe inner sleeve 112 is higher than the syringe outer casing 111, and the support ring 5 is placed in the inner cylinder sleeve 112, and the support ring
  • the outer wall of the 5 is matched with the inner wall of the sleeve 112 and the taper is closely matched.
  • the elastic fastening structure specifically includes an elastic claw 41 integrally molded with the needle base 4 (see Figs.
  • the collar 42 on the inner wall of the front end of the syringe casing 111 (see FIG. 2), the elastic claw 41 extends downward into the gap between the syringe casing 111 and the sleeve inner sleeve 112, and the outer leg of the lower end of the elastic claw 41 43 cooperates with the collar 42 on the syringe casing 111, and the projection 44 on the inner side of the lower end of the elastic claw 41 abuts against the outer wall of the inner sleeve 112, so that the leg 43 and the collar 42 are locked.
  • the inner wall of the sleeve inner sleeve 112 is formed with an elastic pawl 9 (see FIG. 6) which is gathered toward the center.
  • the push rod is formed with a frustum 10 which can be engaged with the elastic pawl 9 after injection, and the structure can make the cone
  • the table 10 easily passes through the elastic pawl 9 and is retained in the inner cavity 8 of the needle holder to achieve a small amount of residue and the needle can not be exchanged.
  • the push rod 2 is provided with a round table 11 (see Fig. 6), and a push rod pull back is provided on the inner wall of the syringe
  • the liquid can be pressed against the boss 12 of the truncated cone (see Fig. 2).
  • the position of the boss 12 is set according to the size of the injected dose, and can be set according to the dose scale on the syringe.
  • the push rod is pulled back.
  • the boss 12 is pressed against the round table 11, the push rod 2 cannot be pulled back, so as to achieve the purpose of controlling the liquid dose.
  • the push rod 2 is provided with a plurality of break points.
  • four easy break points A, B, C, and D are provided.
  • the pull rod can be pulled off along the frangible point. So that the putter can not be used again, to achieve the purpose of complete self-destruction.
  • the needle holder 4 is provided with a support ring 5, and the front end of the syringe is injection-molded with a syringe sleeve 111 and a syringe inner sleeve 112.
  • the syringe sleeve 111 is higher than the sleeve inner sleeve 112, and the support ring 5 is placed.
  • the outer wall of the support ring 5 is matched with the inner wall of the sleeve inner sleeve 112 and the taper is closely matched.
  • the elastic fastening structure specifically comprises an elastic clamping leg 43 integrally molded with the needle seat and disposed in the syringe casing.
  • the collar 42 on the inner wall of the front end, the elastic leg 43 extends outward in the horizontal direction, the outer side of the leg 43 cooperates with the collar 42 on the sleeve 111, and the inside of the leg 43 is integrally molded with the pin.
  • the seat 4 is offset, and the leg 43 and the collar 42 are fastened, and the purpose of reducing the residual amount and the needle seat cannot be exchanged.
  • the push rod 2 is provided with a truncated cone 11 (see Fig. 12), and the inner wall of the syringe is provided with a ring of push rods which can be pressed against the boss 12 of the truncated cone when the liquid is pulled back.
  • the syringe shown in this embodiment, the structure of the syringe 1 and the hub 4 are different from those of the first and second embodiments.
  • the needle hub 4 is provided with a support ring 5, and the support ring 5 is placed in the syringe 1.
  • the outer wall of the support ring 5 is matched with the inner wall of the syringe 1 and the taper is closely matched.
  • the elastic fastening structure specifically includes The elastic claw 41 is integrally molded with the needle seat and the collar 42 disposed on the outer wall of the barrel. The elastic claw 41 extends downward and is wrapped around the outer side of the collar 42. The elastic claw 41 Under the action of its own elastic force, the leg 43 of the lower end of the elastic claw is fastened with the collar 42.
  • the inner wall of the cylinder is formed with an elastic pawl 9 gathered toward the center, and the injection is formed on the push rod to be in phase with the elastic pawl 9.
  • the engaged frustum 10 achieves the purpose of less residual amount and the needle holder cannot be exchanged.
  • the frustum 10 does not pass through the elastic pawl 9 of the needle holder.
  • the process is a liquid pumping process, and the push rod 2 is pulled back when the liquid is pumped.
  • the boss 12 is pressed against the round table 11
  • the liquid pumping is completed as shown in Fig. 9, and the injection is completed, the frustum 10
  • the elastic pawl 9 is passed through, and the elastic pawl 9 is engaged with the frustum 10 to hinder the pusher 2 from moving backward, completing the first step of self-destruction.
  • this process is the second step of self-destruction.
  • the push rod 2 is pulled hard, so that the head of the push rod 2 can not be broken out in the syringe 1, preventing the push rod 2 and the rubber plug 3 from being exchanged. Use it again to achieve complete self-destruction.

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

L'invention porte sur une seringue de dosage à autodestruction qui comporte un corps d'aiguille creux (1), une tige-poussoir (2) pouvant coulisser à l'intérieur du corps d'aiguille (1) et un bouchon en caoutchouc (3) monté sur l'extrémité avant de la tige-poussoir (2). Un raccord d'aiguille (4) est monté sur l'extrémité avant du corps d'aiguille (1). Le pavillon de l'aiguille (4) est pourvu d'une bague de support (5) à l'intérieur de laquelle est prévue une chambre interne (8) pour l'injection de fluide passant à travers celle-ci. La bague de support (5) coïncide si étroitement avec le cône de l'extrémité avant du corps d'aiguille (1) qu'une étanchéité au liquide entre la bague de support (5) et le corps d'aiguille (1) est assurée. Une structure de serrage élastique est utilisée pour fixer le pavillon de l'aiguille (4) à l'extrémité avant du corps d'aiguille (1). Une bride (11) est utilisée sur la tige-poussoir (2). Lorsqu'un bossage (12) sur la paroi interne du corps d'aiguille (1) se trouve contre la bride (11) de la tige-poussoir (2), la tige-poussoir (2) ne peut pas être ramenée en arrière, de telle sorte que la dose du liquide extrait est contrôlée.
PCT/CN2010/073300 2010-02-04 2010-05-27 Seringue de dosage à autodestruction WO2011094977A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201019146021A CN101780297A (zh) 2010-02-04 2010-02-04 一种定量自毁注射器
CN201019146021.3 2010-02-04

Publications (1)

Publication Number Publication Date
WO2011094977A1 true WO2011094977A1 (fr) 2011-08-11

Family

ID=42520521

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2010/073300 WO2011094977A1 (fr) 2010-02-04 2010-05-27 Seringue de dosage à autodestruction

Country Status (2)

Country Link
CN (1) CN101780297A (fr)
WO (1) WO2011094977A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013140380A2 (fr) * 2012-03-23 2013-09-26 Wolfe Tory Medical, Inc Ensemble seringue à blocage automatique
CN109605939A (zh) * 2018-10-09 2019-04-12 朱倩倩 墨水定量填充器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112807523B (zh) * 2019-11-18 2023-05-23 苏宣维 自毁拉缩安全针具

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1302668A (zh) * 2000-01-05 2001-07-11 株式会社Jms 安全注射器
JP2003205035A (ja) * 2001-11-12 2003-07-22 Jms Co Ltd 注射針引込み型注射器
CN1491122A (zh) * 2001-02-06 2004-04-21 株式会社Jms 安全注射器以及安全注射器用注射针
CN1561238A (zh) * 2001-08-22 2005-01-05 舍伍德服务股份公司 针套组件
WO2005023344A1 (fr) * 2003-09-05 2005-03-17 Medical Patents Ltd. Seringue d'injection a aiguille retractable
CN1915448A (zh) * 2006-08-07 2007-02-21 林作钱 一种改进的自毁式注射器

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2571393Y (zh) * 2002-09-25 2003-09-10 名高生化科技股份有限公司 针头锁定装置
CN2722937Y (zh) * 2004-08-25 2005-09-07 杭州龙德医用器械有限公司 一次性使用无菌胰岛素注射器
CN2885293Y (zh) * 2006-04-14 2007-04-04 美迪科（上海）包装材料有限公司 自毁型注射器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1302668A (zh) * 2000-01-05 2001-07-11 株式会社Jms 安全注射器
CN1491122A (zh) * 2001-02-06 2004-04-21 株式会社Jms 安全注射器以及安全注射器用注射针
CN1561238A (zh) * 2001-08-22 2005-01-05 舍伍德服务股份公司 针套组件
JP2003205035A (ja) * 2001-11-12 2003-07-22 Jms Co Ltd 注射針引込み型注射器
WO2005023344A1 (fr) * 2003-09-05 2005-03-17 Medical Patents Ltd. Seringue d'injection a aiguille retractable
CN1915448A (zh) * 2006-08-07 2007-02-21 林作钱 一种改进的自毁式注射器

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013140380A2 (fr) * 2012-03-23 2013-09-26 Wolfe Tory Medical, Inc Ensemble seringue à blocage automatique
WO2013140380A3 (fr) * 2012-03-23 2014-02-20 Wolfe Tory Medical, Inc Ensemble seringue à blocage automatique
TWI583419B (zh) * 2012-03-23 2017-05-21 沃爾夫拓利醫療有限公司 自動失效注射器組合
AU2013236968B2 (en) * 2012-03-23 2018-03-15 Teleflex Medical Incorporated Auto-disable syringe assembly
JP2018075415A (ja) * 2012-03-23 2018-05-17 ウルフ トリー メディカル インコーポレイテッド 自動無効化シリンジ組立体
CN109605939A (zh) * 2018-10-09 2019-04-12 朱倩倩 墨水定量填充器
CN109605939B (zh) * 2018-10-09 2020-06-12 南京溧水高新创业投资管理有限公司 墨水定量填充器

Also Published As

Publication number Publication date
CN101780297A (zh) 2010-07-21

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