CN113546249A - Self-destructible syringe - Google Patents

Self-destructible syringe Download PDF

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Publication number
CN113546249A
CN113546249A CN202010340224.2A CN202010340224A CN113546249A CN 113546249 A CN113546249 A CN 113546249A CN 202010340224 A CN202010340224 A CN 202010340224A CN 113546249 A CN113546249 A CN 113546249A
Authority
CN
China
Prior art keywords
needle
self
syringe
rod
destructible
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.)
Pending
Application number
CN202010340224.2A
Other languages
Chinese (zh)
Inventor
余刚
刘建明
卢金云
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.)
Anhui Hongyu Wuzhou Medical Manufacturer Co ltd
Original Assignee
Anhui Hongyu Wuzhou Medical Manufacturer Co ltd
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 Anhui Hongyu Wuzhou Medical Manufacturer Co ltd filed Critical Anhui Hongyu Wuzhou Medical Manufacturer Co ltd
Priority to CN202010340224.2A priority Critical patent/CN113546249A/en
Priority to PCT/CN2020/094343 priority patent/WO2021217781A1/en
Publication of CN113546249A publication Critical patent/CN113546249A/en
Pending legal-status Critical Current

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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
    • 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
    • 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
    • A61M5/504—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the fluid passageway
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/27—General characteristics of the apparatus preventing use
    • A61M2205/273—General characteristics of the apparatus preventing use preventing reuse, e.g. of disposables

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  • 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 invention relates to the field of medical instruments, in particular to a self-destructible syringe which can be provided with a needle for use, and comprises: a syringe having a barrel with a containing hole, a thrust part formed by the barrel towards the needle direction, a needle head connecting part formed by the thrust towards the needle direction for installing the needle head, the needle head connecting part is tubular and communicated with the containing hole, and a clamping part is formed at the inner edge of the needle head connecting part; the push rod is provided with a rod body, and a push-pull part for pushing and pulling fingers is arranged at the rear end of the rod body; the stopper group is provided with a disc-shaped stopper body movably plugged in the accommodating hole of the syringe and a connecting body fixedly connected between the stopper body and the front end of the rod body; a clamping conical rod which penetrates through the plug body extends out of one end of the fixed connecting body facing the needle head connecting part; a locking edge is formed on the outer peripheral wall of the locking taper rod. The syringe is damaged in whole by one action, and the syringe part is prevented from being reused.

Description

Self-destructible syringe
Technical Field
The invention relates to the field of medical instruments, in particular to a self-destructible syringe.
Background
Syringe reuse has always been a significant potential in medical treatment worldwide, and the intravenous toxicant population who normally shares and reuses syringes is also a high-risk population of aids, and every year, people become infected with aids virus because of the shared and reused syringes. In addition, in many developing countries, patient life-threatening events are frequent and alarming due to viral cross-contamination among people caused by the repeated use of syringes.
A large number of syringes have been designed in the prior art to address this problem. Some require a specific action to destroy the syringe after use, either by using a destructive device or by providing the syringe with a frangible zone to render it unusable by external force. These areas of weakness are often found on pushers used to push fluids, which can be broken off by force, but do not cause any damage to the barrel of the injector, which can be reused after a plunger has been reattached.
Disclosure of Invention
The invention aims to provide a self-destructible syringe, which can destroy the whole syringe by one action so as to solve the technical problem that the syringe part can be remained without being destroyed after the self-destructible syringe is destroyed once in the prior art, so that the syringe part can still be partially reused.
The self-destructible syringe of the invention can be provided with a needle for use, and comprises:
a syringe having a body with a containing hole, a thrust part formed by the body towards the needle direction, a needle connecting part formed by the thrust towards the needle direction for installing the needle, the needle connecting part is tubular and communicated with the containing hole, and a clamping part is formed at the inner edge of the needle connecting part;
the push rod is provided with a rod body, and a push-pull part for pushing and pulling fingers is arranged at the rear end of the rod body;
the stopper group is provided with a stopper body which is disc-shaped and can be movably plugged in the accommodating hole of the syringe, and a connecting body which is fixedly connected between the stopper body and the front end of the rod body; a clamping conical rod which penetrates through the plug body extends out of one end of the fixed connecting body facing the needle head connecting part; a stop edge is formed on the peripheral wall of the stop taper rod, and the stop edge can elastically deform forwards and is clamped on the stop part through the stop part when retreating.
Further, the push rod is provided with a disconnecting structure which is connected and formed between the rod body and the connecting body, and when the stop block is pulled back by the push rod, the disconnecting structure of the push rod can be disconnected.
Further, the clamping part is an annular bulge formed by the inner edge of the needle head connecting part towards the central axis direction of the needle head connecting part, the inner edge of the annular bulge forms a hollow concave Ruhr cone, and the large end of the Ruhr cone faces the inside of the needle cylinder.
Further, the outer periphery of the retaining rim forms a luer taper that mates with the inner edge of the annular protrusion.
Further, the clamping edge is formed in the middle of the clamping taper rod in the axial direction.
Further, the thrust part is in a shape of a hollow luer taper protruding towards the needle head.
Further, one end of the plug body of the plug group, which faces the thrust part, is tapered.
Further, the plug body is made of rubber.
Further, the plug body is in a hollow cap shape and is sleeved outside the connecting piece.
Further, the breaking structure is a breakable connecting column formed between the shaft and the connecting member.
Further, the number of the connecting columns is one, and the connecting columns are formed between the center of the front end face of the rod body and the center of the rear end face of the connecting piece.
When the self-destructible syringe is used until the liquid pushing is finished, the clamping conical rod can be integrally pushed into the needle head connecting part along the liquid pushing action, and the clamping edge can easily pass through the clamping part forwards and can not retreat out after passing.
The self-destructible syringe can complete the integral destruction of the syringe by one action of a user during injection, so that the push rod can be partially reused without separating the syringe.
In some embodiments, since the push rod has a disconnecting structure connection formed between the rod body and the connecting body, a second destruction of the injector can be actively carried out or passively carried out when someone attempts to reuse the injector in the embodiment, so that the rod body is separated from the stopper group, the rod body can not be reused, and the stopper group left in the syringe can not be used again independently, thereby solving the technical problem that the syringe part can be left undamaged after the self-destructible injector is destroyed once in the prior art, so that the syringe part can still be partially reused, and the second destruction can be passively carried out, so that the problem that the injector is reused is better avoided.
Drawings
FIG. 1 is an exploded view of a self-destructible syringe in accordance with an embodiment of the present invention;
FIG. 2 is a partial cross-sectional view of a self-destructible syringe in an end-of-push condition in accordance with an embodiment of the invention;
FIG. 3 is an enlarged view taken at A in FIG. 2;
FIG. 4 is a cross-sectional view of a self-destructible syringe in accordance with an embodiment of the invention after being self-destructed.
The reference numerals include: barrel 1, thrust part 2, needle head connecting part 3, shaft 4, push-pull part 5, connector 6, plug 7, clamping taper rod 8, clamping part 9, clamping edge 10 and connecting column 11.
Detailed Description
The components of the self-destructible syringe in this embodiment are shown in fig. 1, and include a syringe having a barrel 1 with a receiving hole, a thrust portion 2 formed by the barrel 1 toward the needle, the thrust portion 2 being a hollow luer taper protruding toward the needle, and in other embodiments, other shapes may be adopted as needed, the taper point of the thrust portion 2 further having a needle connecting portion 3 formed by the thrust portion 2 toward the needle for mounting the needle, the needle connecting portion 3 being tubular and communicating with the receiving hole.
The push rod is provided with a rod body 4, the rear end of the rod body 4 is provided with a disc-shaped push-pull part 5 for pushing and pulling fingers, and the front end of the rod body 4 is provided with a connecting body 6; the push rod is also provided with a plug body 7, the plug body 7 is made of rubber and is in a hollow cap shape, the plug body 7 can be sleeved on the connecting body 6 and tightly holds the connecting body 6, the outer contour size of the sleeved plug body 7 allows the plug body 7 to be movably plugged in an accommodating hole of the needle cylinder, and one end of the plug body 7, facing the thrust part 2, is in a conical shape and can be better matched with the thrust part 2; in addition, a clamping conical rod 8 which can extend into the needle head connecting part 3 extends out of one end of the connecting body 6 facing the needle head connecting part 3, correspondingly, a through hole is formed in the conical tip of the plug body 7 for the clamping conical rod 8 to pass through, the connecting body 6 is also designed into an upper disc and a lower disc which are one small disc and one large disc and are connected through a connecting column 11, so that a stepped platform is formed, the large disc is positioned in the plug body 7, the small disc is positioned outside the plug body 7, the diameter of the small disc is larger than that of the through hole in the plug body 7, the plug body 7 is clamped, and the better supporting and fixing effects are achieved on the plug body 7; the locking taper 8 projects upward from the small disk, and a locking edge 10 is formed on the outer peripheral wall of the locking taper 8, and on the other hand, a locking portion 9 is formed on the inner edge of the needle head connecting portion 3, which allows the locking edge 10 to be elastically deformed forward by the locking portion 9 to be engaged with the locking portion 9 when retreated, so that the connecting body 6 and the stopper body 7 constitute the stopper set in the present embodiment.
As shown in figure 2, when the liquid pushing is finished, the locking taper rod 8 can be pushed into the needle head connecting part 3 along the liquid pushing action, as shown in the figure, the locking part 9 is actually an annular bulge formed by the inner edge of the needle head connecting part 3 towards the central axis direction of the needle head connecting part 3, the inner edge of the annular bulge forms a hollow concave Ruhr taper, the big end of the Ruhr taper faces the inside of the syringe barrel, meanwhile, the outer periphery of the locking edge 10 forms a Ruhr taper matched with the inner edge of the annular bulge, and the matched conical surfaces enable the locking edge 10 to pass through the locking part 9 more easily and can not be withdrawn after passing.
The shaft 4 and the connecting body 6 in this embodiment are integrally formed, and as a more preferable design, a disconnecting structure is formed between the shaft 4 and the connecting body 6, and when the stopper set in this embodiment is pulled back by the push rod, the push rod disconnecting structure can be disconnected, as shown in fig. 3, this disconnecting structure in this embodiment is embodied as a connecting column 11 formed between the center of the front end face of the shaft 4 and the center of the rear end face of the connecting member, the diameter of the connecting column 11 is small, so that it is very easy to be pulled short by an external force, so that the stopper set separated from the shaft 4 is left in the barrel 1 and cannot be taken out, and whether a user intentionally pulls the push rod to self-destruct or tries to pull the push rod again by repeatedly using the syringe, the shaft 4 is disconnected from the stopper set as shown in fig. 4, destroying both the plunger and the actual syringe effect. Other common disconnect configurations may be used in other embodiments, and the design in this embodiment is not the only option for the present invention. For example, also by using the integrally formed, but smaller, multi-heel connecting post 11, the connection point may not be provided at the center, but at another point on the connection surface of the shaft 4 and the connecting body 6.
According to the self-destructing injector provided by the embodiment, a user can complete the overall destruction of the injector by one action during injection, so that the push rod can be used for reusing a part of the injector without separating the injector, and can also actively implement or passively implement the second destruction of the injector when trying to reuse the injector in the embodiment, so that the rod body 4 is separated from the stopper group, the rod body 4 cannot be reused, and the stopper group left in the injector cannot be used for reusing the injector independently, thereby solving the technical problem that the injector can be reused partially because the injector can be left undamaged after the self-destructing injector is destroyed once in the prior art, and passively implementing the second destruction, thereby better avoiding the problem that the injector is reused.
The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.

Claims (10)

1. A self-destructible syringe capable of being provided with a needle for use, the syringe being characterized in that it comprises:
a syringe having a body with a containing hole, a thrust part formed by the body towards the needle direction, a needle connecting part formed by the thrust towards the needle direction for installing the needle, the needle connecting part is tubular and communicated with the containing hole, and a clamping part is formed at the inner edge of the needle connecting part;
the push rod is provided with a rod body, and a push-pull part for pushing and pulling fingers is arranged at the rear end of the rod body;
the stopper group is provided with a stopper body which is disc-shaped and can be movably plugged in the accommodating hole of the syringe, and a connecting body which is fixedly connected between the stopper body and the front end of the rod body; a clamping conical rod which penetrates through the plug body extends out of one end of the fixed connecting body facing the needle head connecting part; a stop edge is formed on the peripheral wall of the stop taper rod, and the stop edge can elastically deform forwards and is clamped on the stop part through the stop part when retreating.
2. The self-destructible syringe according to claim 1, wherein the plunger has a break structure formed between the shaft and the connecting body, the break structure being capable of breaking away when the stopper assembly is pulled back by the plunger.
3. The self-destructible syringe according to claim 1, wherein said locking part presents an annular projection formed by the inner edge of said needle connecting part toward the central axis of said needle connecting part, the inner edge of said annular projection forms a hollow concave luer taper with the larger end facing the inside of said barrel.
4. The self-destructible syringe according to claim 3, wherein the outer periphery of said retaining rim forms a luer taper that mates with the inner rim of said annular projection.
5. The self-destructible syringe according to claim 1, wherein the locking rim is formed in the middle in the axial direction of the locking cone.
6. The self-destructible syringe according to claim 1, wherein the thrust portion is tapered towards the needle towards the projecting hollow luer.
7. The self-destructible syringe according to claim 1, wherein the stopper body of the stopper set is tapered towards the end of the thrust portion.
8. The self-destructible syringe according to claim 1, wherein the plug body is in the form of a hollow cap and is sleeved outside the connector.
9. The self-destructible syringe according to claim 2, wherein the break-away structure is a breakable connecting post formed between the shaft and the connector.
10. The self-destructible syringe according to claim 9, wherein the number of connecting posts is one, formed between the center of the front end face of the shaft and the center of the rear end face of the connecting member.
CN202010340224.2A 2020-04-26 2020-04-26 Self-destructible syringe Pending CN113546249A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202010340224.2A CN113546249A (en) 2020-04-26 2020-04-26 Self-destructible syringe
PCT/CN2020/094343 WO2021217781A1 (en) 2020-04-26 2020-06-04 Self-destructive syringe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010340224.2A CN113546249A (en) 2020-04-26 2020-04-26 Self-destructible syringe

Publications (1)

Publication Number Publication Date
CN113546249A true CN113546249A (en) 2021-10-26

Family

ID=78129901

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010340224.2A Pending CN113546249A (en) 2020-04-26 2020-04-26 Self-destructible syringe

Country Status (1)

Country Link
CN (1) CN113546249A (en)

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