WO1999053980A1 - Seringue jetable - Google Patents

Seringue jetable Download PDF

Info

Publication number
WO1999053980A1
WO1999053980A1 PCT/CN1999/000056 CN9900056W WO9953980A1 WO 1999053980 A1 WO1999053980 A1 WO 1999053980A1 CN 9900056 W CN9900056 W CN 9900056W WO 9953980 A1 WO9953980 A1 WO 9953980A1
Authority
WO
WIPO (PCT)
Prior art keywords
push rod
barrel
injection
needle
nipple
Prior art date
Application number
PCT/CN1999/000056
Other languages
English (en)
Chinese (zh)
Inventor
Waishi Kwok
Original Assignee
Waishi Kwok
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
Priority claimed from CN 98234042 external-priority patent/CN2333409Y/zh
Priority claimed from CN 98234041 external-priority patent/CN2333408Y/zh
Application filed by Waishi Kwok filed Critical Waishi Kwok
Priority to AU34060/99A priority Critical patent/AU3406099A/en
Publication of WO1999053980A1 publication Critical patent/WO1999053980A1/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
    • 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
    • A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • A61M2005/342—Off-center needles, i.e. needle connections not being coaxial with the longitudinal symmetry axis of syringe barrel
    • 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
    • A61M5/504—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the fluid passageway
    • A61M2005/5046—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the fluid passageway automatically, e.g. plug actuated by the piston head, one-way valve

Definitions

  • the present invention relates to a syringe belonging to the field of medical equipment, and more particularly, the present invention relates to a disposable syringe.
  • the structure of existing disposable syringes often cannot guarantee that users do not reuse them. Some users reuse existing disposable syringes in order to save money.
  • the existing disposable syringes are generally made of plastic and are not resistant. High temperature, can not be disinfected by conventional high temperature disinfection methods, repeated use will lead to cross infection between patients, especially in some more remote areas and economically underdeveloped areas, such cases often occur.
  • the purpose of the present invention is to provide a disposable syringe, which can ensure that the cartridge core cannot be pulled again in the barrel after one-time use. If the user pulls vigorously, the syringe will self-destruct, thereby realizing the real
  • the purpose of single use is simple structure and low cost.
  • the disposable syringe of the present invention comprises a barrel, a barrel core and an injection needle.
  • the barrel core is a push pestle with a plurality of fins, and a convex surface is connected to the surface of the piston that pushes the liquid medicine under the push rod.
  • the nipple is fully fitted with the inside of the needle nipple at the lower end of the barrel.
  • the nipple on the pusher piston and the needle nipple of the cylinder are provided with an elastic inverted buckle device capable of engaging with each other.
  • the push rod When the injection is not performed, the push rod does not fully cooperate with the cylinder, but is slightly separated from the cylinder, so that the inverted buckle device of the push rod does not engage with the inverted device of the needle nipple of the cylinder, and the push rod can be Free movement inside the barrel.
  • the plunger After pumping the liquid medicine for injection, the plunger completely enters the barrel, and the nipples on the plunger fully cooperate with the needle nipples of the barrel.
  • the inverted buckle device on the nipple and the inverted buckle device on the needle nipple are engaged with each other to prevent the push rod from being again
  • the breast protrusion has a reduced diameter portion between the buckle device and the bottom surface of the push rod. Under a certain pulling force, the breast protrusion will be broken into two parts from the reduced diameter portion.
  • the nipple on the push rod is fully matched with the needle nipple of the cylinder, if you want to overcome the effect of the buckle device and pull the push rod strongly outward, the nipple is subject to the engagement of the buckle device and breaks from the reduced diameter Open and blocked inside the needle nipple. The purpose is to make the injection needle self-destruct after one-time use.
  • the top of the push rod and the top of the cylinder are provided with an inverted buckle device at corresponding positions.
  • the push rod piston pushes the end surface of the medicinal solution and the bottom surface of the cylinder.
  • the upside-down device on the top of the push rod and the upside-down device on the top of the cylinder are engaged with each other to achieve the effect of double protection.
  • the present invention in order to prevent someone from wanting to reuse the disposable injection needle without deliberately pushing the push rod completely into the barrel, that is, a part of the medicinal solution remains in the barrel at the end of the injection, and the syringe can still be used for the next injection
  • the present invention is designed so that the upside-down device at the top of the push rod has a different distance from the top of the push rod, so that after the push rod has been pushed into a part of the barrel, it will be pulled back by the engagement of the upside-down device instead of backward .
  • the design of the inverted buckle device on the nipple of the pusher plunger and the corresponding inverted buckle device on the needle nipple on the lower end of the barrel makes the push rod cannot be pulled out of the barrel again after using the syringe Out.
  • the design of the diameter reduction part of the breast protrusion makes someone want to repeatedly use the syringe and pull the push rod strongly.
  • the engagement of the buckle device causes the breast protrusion to be pulled and breaks at the reduced diameter.
  • the syringe was self-destructing, and it really achieved the purpose of single use.
  • the buckle device is easy to be integrally processed with the pusher and the cylinder when producing the push rod and the cylinder.
  • the process is simple and does not require additional costs. Low production costs. That is to say, it can achieve the real one-time use effect with simple process and lower production cost.
  • FIG. 1 is a schematic view of a syringe according to a preferred embodiment of the present invention when it is not in use;
  • FIG. 2 is a schematic diagram of a state of the syringe shown in FIG. 1 after use;
  • FIG. 3 shows that the upper end of the cylinder and the upper end of the push rod can be engaged with each other at corresponding positions.
  • Another form of flip device
  • a syringe As shown in FIG. 1, a syringe according to a preferred embodiment of the present invention includes a barrel body 1, a barrel core, and an injection needle.
  • the core is a push rod 2 with a plurality of fins in section.
  • the plunger 13 that pushes the medicinal solution 13 is connected with a nipple 6 corresponding to the needle nipple 5.
  • an outer inverted buckle 3 is provided on the outer side of the nipple 6, and an inner inverted buckle 3 is provided on the inner side of the nipple 5 at a corresponding position.
  • the inner buckle 4 is engaged with each other, so that after an injection task is completed, the push rod 2 cannot be pulled out of the cylinder 1 again due to the engagement of the buckle devices 3 and 4 with each other.
  • the breast projection 6 of the push rod piston 13 has a reduced diameter portion 10 between the outer inverse buckle 3 and the surface of the piston 13 pushing the medicinal solution. Under a certain external force, the breast projection 6 will break at the reduced diameter portion ⁇ .
  • the upper end of the blade of the pusher 2 is provided with outer buckles 8, 8, and the upper end of the cylinder 1 is provided at a corresponding position.
  • the outer buckle 8 When the push rod 2 is fully pushed into the cylinder 1, the outer buckle 8 can be engaged with each other The inner buckle 9 prevents the push rod 2 from being pulled out of the barrel 1 again, thereby achieving a double protection effect.
  • the drug solution has not been completely injected, so that the breast projection 6 does not completely enter the needle nipple 5, so that the purpose of self-destructing or self-locking the syringe cannot be achieved, and the syringe can be reused. .
  • more than one outer kicks 8, 8 are provided on each wing of the push rod, and these outer kicks are at different distances from the finger pushing surface of the pusher.
  • the outer buckle 8 closest to the pushing surface of the pusher finger when the surface of the pusher piston 13 pushing the medicinal solution completely matches the bottom surface of the cylinder, that is, when the nipple 6 fully extends into the needle nipple 5, it is at the top of the cylinder
  • the inner buckle 9 is engaged with each other. If the user 2 pushes the pestle into the cylinder 1 to a certain depth, that is, when a certain amount of medicinal solution remains in the cylinder, the push rod 2 is pulled outward, and the other outer buckles 8 on the wings of the push rod 2 will interact with the cylinder 1
  • the inner buckle 9 engages to prevent the pusher from pulling outward. This prevents the user from intentionally leaving a portion of the drug solution at the end of the injection to prevent the syringe from being self-locking or self-destructing in order to enable the syringe to be reused.
  • Fig. 2 shows the state of the syringe after the injection is completed. It can be seen from the figure that due to the action of the thrust force and the elastic effect of the extra buckle portion, the outer buckle 8 on the upper end of the push rod 2 and the inner downside of the cylinder The buckle 9 is fully engaged, while the inner buckle 4 of the nipple 5 and the The outer buckle 3 on the breast projection 6 is completely engaged. The engagement of the two parts of the buckle prevents the push rod 2 from being pulled out of the cylinder 1 again.
  • the bottom surface of the cylinder 1 is different from the groove at the position of the needle nipple 5 to prevent the push rod from being pushed into the cylinder due to inadvertent rotation, so that the syringe locks itself without using.
  • the nipple 6 is aligned with the inner hole of the needle nipple 5, and the air in the cylinder 1 is excluded for injection.
  • the bottom surface of the cylinder is completely matched with the surface of the push rod piston 13 pushing the medicine solution.
  • the design of the bottom surface as an inclined surface can promote the injection to be performed after the rotation is performed in order to achieve the prescribed injection dose, so that the final push rod 2 completely enters the cylinder 1, that is, the pushing liquid of the pusher piston 13
  • the surface is completely matched with the bottom surface of the cylinder 1.
  • An inverted buckle device capable of engaging the top end of the push rod 2 and the top end of the cylinder 1 with each other may also adopt other forms, as shown in FIG. 3.
  • Each wing of pusher 2 has more than one protruding part with elastic buckle devices 11, 11, near the pushing surface of the finger.
  • the flange of cylinder 1 has corresponding holes and can be extended with the pusher.
  • Partial buckle devices 11, 11 and snapped buckle devices 12 after the marking line or marking point on the push rod 2 is aligned with the corresponding marking line 14 on the cylinder 1, with the push of the push rod 2 Into, the protruding part of its fins enters into the corresponding holes 12, 12, by means of the elastic energy of the buckle devices 11, 11 ,.
  • the shortest projection of the one or more projections is an inverted buckle
  • the device 11 and the flip device 12 on the flange of the cylinder 1 are engaged with each other, so as to double prevent the push rod from being pulled out of the cylinder. If the user wants to make the syringe reusable, a certain amount of liquid remains in the barrel at the end of the first injection, and the syringe will not self-lock or self-destruct.
  • the needle nipple 5 of the barrel 1 is closely fitted with an injection needle, and the external surface of the needle nipple or the barrel is provided with an external thread or an inverted buckle.
  • the double injection bottle has three rubber stoppers, that is, the injection bottle near the needle tip of the injection needle has two rubber stoppers, and the injection bottle far from the needle tip has a rubber stopper.
  • the two injection bottles are stacked on top of each other and connected by a plastic jacket.
  • the syringe and injection bottle are made in the form of a whole package, which can save operation time, and only need to complete the aspiration of the liquid to perform the injection.
  • a special medicine may be provided in the cylinder.
  • the outer package of the product in which the syringe and injection bottle are assembled as a whole is printed with a brief description of the drug name, pharmacology, dosage, side effects, date of manufacture, and date of efficacy.
  • an anti-lock sleeve can be placed between the handle of the cartridge core and the barrel and removed during use.
  • the reverse buckle device between the needle nipple 5 of the cylinder 1 and the breast projection 6 of the push rod 2 can adopt various forms that can be engaged with each other, which is well known to those skilled in the art.

Abstract

L'invention concerne une seringue jetable qui comprend un cylindre, un corps de cylindre et une aiguille. La coupe du corps de cylindre, servant de tige de poussée, présente une pluralité d'ailettes et une protubérance reliée à sa surface distale d'extrémité. Une fois l'injection effectuée, la protubérance est totalement ajustée à la surface intérieure de l'injecteur à aiguille. Un crochet élastique tourné vers l'extérieur disposé sur la protubérance entre en contact avec un crochet se trouvant sur la surface intérieure de l'injecteur à aiguille après injection du liquide de manière à éviter que la tige ne sorte. La protubérance comprend aussi une partie plus étroite entre la surface d'extrémité distale de la tige de piston et elle-même de manière que l'engament des crochets puisse permettre l'auto-blocage de la seringue après l'extraction de la tige de poussée une fois l'injection effectuée. Ainsi, la seringue se détruit automatique du fait que la protubérance se casse au niveau de sa partie plus étroite après la poussée.
PCT/CN1999/000056 1998-04-21 1999-04-21 Seringue jetable WO1999053980A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU34060/99A AU3406099A (en) 1998-04-21 1999-04-21 Disposable syringe

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN98234041.9 1998-04-21
CN98234042.7 1998-04-21
CN 98234042 CN2333409Y (zh) 1998-04-21 1998-04-21 一种内装注射针的一次性注射器
CN 98234041 CN2333408Y (zh) 1998-04-21 1998-04-21 筒芯可锁死在筒体内的一次性注射器

Publications (1)

Publication Number Publication Date
WO1999053980A1 true WO1999053980A1 (fr) 1999-10-28

Family

ID=25744921

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN1999/000056 WO1999053980A1 (fr) 1998-04-21 1999-04-21 Seringue jetable

Country Status (2)

Country Link
AU (1) AU3406099A (fr)
WO (1) WO1999053980A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000038769A1 (fr) * 1998-12-29 2000-07-06 Safegard Medical Limited Seringue a usage unique avec piston frangible
EP1106194A1 (fr) * 1999-12-03 2001-06-13 Euro-China Farma, S.L. Seringue jettable à usage unique
DE102007026972A1 (de) * 2007-06-04 2008-12-11 Cet Consulting Engineering Trading Monika Eccard Einwegspritze mit Wiederverwendungsschutz
CN110215569A (zh) * 2019-07-16 2019-09-10 吉林大学 一种具有过滤功能的注射器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1033743A (zh) * 1987-09-08 1989-07-12 翟财钧 具有自动闭锁装置或兼有真空压力指示装置之抽吸式注射器
WO1989011887A1 (fr) * 1988-06-07 1989-12-14 Michel Emerit Seringue a usage unique
WO1993005833A1 (fr) * 1991-09-18 1993-04-01 Jesgamabe, S.L. Seringue de securite simplifiee
CN2259184Y (zh) * 1993-06-28 1997-08-13 彭正合 自毁型一次性注射器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1033743A (zh) * 1987-09-08 1989-07-12 翟财钧 具有自动闭锁装置或兼有真空压力指示装置之抽吸式注射器
WO1989011887A1 (fr) * 1988-06-07 1989-12-14 Michel Emerit Seringue a usage unique
WO1993005833A1 (fr) * 1991-09-18 1993-04-01 Jesgamabe, S.L. Seringue de securite simplifiee
CN2259184Y (zh) * 1993-06-28 1997-08-13 彭正合 自毁型一次性注射器

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000038769A1 (fr) * 1998-12-29 2000-07-06 Safegard Medical Limited Seringue a usage unique avec piston frangible
EP1106194A1 (fr) * 1999-12-03 2001-06-13 Euro-China Farma, S.L. Seringue jettable à usage unique
DE102007026972A1 (de) * 2007-06-04 2008-12-11 Cet Consulting Engineering Trading Monika Eccard Einwegspritze mit Wiederverwendungsschutz
CN110215569A (zh) * 2019-07-16 2019-09-10 吉林大学 一种具有过滤功能的注射器

Also Published As

Publication number Publication date
AU3406099A (en) 1999-11-08

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