CN113616880A - Self-destruction disposable syringe - Google Patents
Self-destruction disposable syringe Download PDFInfo
- Publication number
- CN113616880A CN113616880A CN202010386919.4A CN202010386919A CN113616880A CN 113616880 A CN113616880 A CN 113616880A CN 202010386919 A CN202010386919 A CN 202010386919A CN 113616880 A CN113616880 A CN 113616880A
- Authority
- CN
- China
- Prior art keywords
- self
- needle
- groove
- joint
- disposable syringe
- 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
Links
- 238000002347 injection Methods 0.000 claims abstract description 34
- 239000007924 injection Substances 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 30
- 230000001681 protective effect Effects 0.000 claims abstract description 6
- 238000001125 extrusion Methods 0.000 claims description 4
- 230000036541 health Effects 0.000 abstract description 4
- 239000003814 drug Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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
-
- 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
- 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
- A61M5/3221—Constructional features thereof, e.g. to improve manipulation or functioning
- A61M2005/323—Connection between plunger distal end and needle hub proximal end, e.g. stud protruding from the plunger
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Environmental & Geological Engineering (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a self-destruction disposable syringe which comprises a push rod, a needle cylinder and a needle seat, wherein the push rod is slidably arranged inside the needle cylinder, the front end of the needle cylinder is connected with the needle seat through a connecting point, an injection needle is arranged in the needle seat, a protective sleeve is sleeved outside the injection needle, a liquid injection pipeline is arranged at the bottom of the needle seat and is communicated with the injection needle, a self-destruction rod is arranged at the bottom of the needle seat and extends downwards along two sides of the edge of the liquid injection pipeline, a clamping joint is arranged at the end part of the self-destruction rod, a piston is fixedly connected at the front end of the push rod, and a bayonet matched with the clamping joint is arranged at the upper end of the piston. The disposable syringe has reasonable structural design and simple and convenient operation, can be automatically damaged after being used, effectively prevents the disposable syringe from being reused by lawbreakers, and ensures the health and safety of medical patients and medical care personnel.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a self-destruction disposable syringe.
Background
The disposable syringe is a disposable medical appliance consumable and is widely applied in domestic clinic. The function of the medicine is to inject the medicine into a human body and directly contact with blood and body fluid of the human body. To prevent the spread of disease by infection, legislation has mandated that syringes be re-used and must be discarded after use. However, some lawbreakers go to risk without worrying about the collar in order to gain violence, and the disposable syringes after use are collected for sale, which seriously threatens the health safety of medical patients and medical care personnel. Therefore, a disposable syringe which has reasonable structural design, simple and convenient operation and can be automatically damaged after the syringe is used is needed.
Disclosure of Invention
In view of the above disadvantages of the prior art, an object of the present invention is to provide a self-destruction disposable syringe, which has a reasonable structural design and simple and convenient operation, and can be automatically damaged after use, thereby effectively preventing the disposable syringe from being reused by lawbreakers, and ensuring the health and safety of medical patients and medical care personnel.
In order to achieve the above and other related purposes, the invention provides a self-destruction disposable syringe, which comprises a push rod, a needle cylinder and a needle seat, wherein the push rod is slidably installed inside the needle cylinder, the front end of the needle cylinder is connected with the needle seat through a connecting point, an injection needle is installed in the needle seat, a protective sleeve is sleeved outside the injection needle, a liquid injection pipeline is arranged at the bottom of the needle seat and communicated with the injection needle, self-destruction rods extend downwards from the bottom of the needle seat along two sides of the edge of the liquid injection pipeline, a clamping joint is arranged at the end part of each self-destruction rod, a piston is fixedly connected at the front end of the push rod, and a bayonet matched with the clamping joint is arranged at the upper end of the piston.
Preferably, the bayonet socket comprises the pressing groove of top and the joint groove of below, the pressing groove and joint groove intercommunication support, the joint connects after supporting the pressing groove extrusion the joint in the joint inslot.
Preferably, the outer side wall of the clamping head is an arc-shaped surface, and the inner groove wall of the pressing groove is an inclined surface which is in pressing contact with the arc-shaped surface.
Preferably, the maximum diameter of the clamping head is larger than that of the abutting groove, and the maximum diameter of the clamping head is smaller than that of the clamping groove.
Preferably, the upper end of joint is equipped with fixed arch, the top in joint groove is equipped with fixed recess, fixed arch joint is in fixed recess.
Preferably, the front end of the syringe is provided with a joining part with the diameter gradually decreasing from back to front, the front end of the piston is provided with a liquid pushing part matched with the inner wall of the joining part, and the bayonet is arranged at the front end of the liquid pushing part.
Preferably, before the injector is used, the tail end of the push rod is connected with the tail part of the syringe through a safety element.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the self-destruction rod and the bayonet joint are arranged at the bottom of the needle seat, the bayonet is arranged at the front end of the piston, the bayonet joint is finally clamped and fixed in the bayonet groove after being extruded by the pressing groove in the injection process, and the locking acting force between the bayonet joint and the bayonet is larger than the connecting acting force between the needle seat and the needle cylinder in the withdrawing process, so that the needle seat and the injection needle are connected with the piston and are pulled back into the needle cylinder together.
Drawings
The invention is described in further detail below with reference to specific embodiments and with reference to the following drawings.
FIG. 1 is an exploded view of the structure of the present invention;
FIG. 2 is a schematic diagram of the present invention before use;
FIG. 3 is a schematic view of the present invention in use;
FIG. 4 is an enlarged schematic view at A in FIG. 3;
FIG. 5 is a schematic view of section B-B of FIG. 4;
fig. 6 is a schematic structural view after the present invention is used.
Wherein the reference numerals are specified as follows: the injection needle comprises a push rod 1, a piston 2, a bayonet 210, a pressing groove 211, a clamping groove 212, a fixing groove 213, a liquid pushing part 220, a needle cylinder 3, a connecting part 310, a needle seat 4, a liquid injection pipeline 401, a self-destruction rod 402, a clamping head 403, a fixing bulge 404, an injection needle 5, a protective sleeve 6, a safety piece 7 and a connecting point 8.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be apparent to those skilled in the art from the disclosure herein.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used to limit the conditions and conditions of the present disclosure, so that the present disclosure is not technically significant, and any structural modifications, ratio changes or size adjustments should still fall within the scope of the present disclosure without affecting the efficacy and the achievable purpose of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
As shown in figures 1-5, the invention provides a self-destruction disposable syringe, which comprises a push rod 1, a syringe 3 and a needle seat 4, wherein the push rod 1 is slidably arranged inside the syringe 3, the front end of the syringe 3 is connected with the needle seat 4 through a connecting point 8, an injection needle 5 is arranged in the needle seat 4, a protective sleeve 6 is sleeved outside the injection needle 5, the protective sleeve 6 can prevent the injection needle 5 from mistakenly poking medical personnel and improve the safety performance in use, a liquid injection pipeline 401 is arranged at the bottom of the needle seat 4, the liquid injection pipeline 401 is communicated with the injection needle 5, self-destruction rods 402 are arranged at the bottom of the needle seat 4 in a downward extending manner along two sides of the edge of the liquid injection pipeline 401, the two self-destruction rods 402 are symmetrically arranged, a cavity channel formed between the two self-destruction rods is communicated with the liquid injection pipeline, the cavity channel has the functions of conveying liquid medicine in the syringe to the liquid injection pipeline and the injection needle and conveying the liquid medicine to the syringe, and when the two self-destruction rods are extruded, the cavity provides an inward contraction space for the self-destruction rod, the end part of the self-destruction rod 402 is provided with a clamping joint 403, the front end of the push rod 1 is fixedly connected with a piston 2, and the upper end of the piston 2 is provided with a bayonet 210 used for clamping and matching with the clamping joint 403.
As shown in fig. 4, in the present embodiment, the bayonet 210 is composed of an upper pressing groove 211 and a lower clamping groove 212, the pressing groove 211 is communicated with the clamping groove 212, and the clamping head 403 is clamped in the clamping groove 212 after being pressed by the pressing groove 211.
Further, the outer side wall of the clamping head 403 is an arc-shaped surface, and the inner groove wall of the pressing groove 211 is an inclined surface which is in pressing contact with the arc-shaped surface. Through adopting the design that the arcwall face offsets the crimping with the inclined plane and touches, when the joint received extrusion effort, the stress point distributes evenly, and the atress is balanced stable for self-destruction pole can smooth-going inwards shrink.
Further, the maximum diameter of clamping head 403 is greater than the maximum diameter of abutting groove 211, and the maximum diameter of clamping head 403 is less than the diameter of clamping groove 212, so that the clamping head can be squeezed when abutting the groove, and can be smoothly clamped in the clamping groove.
Further, the upper end of the clamping head 403 is provided with a fixing protrusion 404, the top of the clamping groove 212 is provided with a fixing groove 213, and the fixing protrusion 404 is clamped in the fixing groove 213. When the joint forms joint self-locking structure in the joint groove, the locking force of this structure is further improved in the joint cooperation of fixed arch and fixed recess for the joint more adds to be difficult to deviate from the joint groove, better realization self-destruction function.
Furthermore, the front end of the syringe 3 is provided with a joint part 310 with a diameter gradually decreasing from back to front, the front end of the piston 2 is provided with a liquid pushing part 220 matched with the inner wall of the joint part 310, and the bayonet 210 is arranged at the front end of the liquid pushing part 220. Because the inner walls of the joint parts of the liquid pushing parts are matched, when the push rod is pushed to enable the liquid pushing parts to gradually approach the joint parts, the liquid medicine in the needle cylinder can be more effectively pushed out, and the waste of the liquid medicine is avoided; simultaneously, the inner wall of the joining part can also exert an extrusion effect on the outer wall of the liquid pushing part, so that the diameters of the abutting groove and the clamping groove can be reduced, and the locking effect on the clamping connector is further improved.
In this embodiment, before the injector is used, the tail end of the push rod 1 is connected with the tail part of the needle cylinder 3 through a safety piece 7.
The working principle is as follows: when the injector is used, firstly, the safety element 7 is detached, so that the push rod 1 can smoothly slide in the needle cylinder 3, then liquid medicine is extracted, when in injection, the push rod 1 is pressed, so that the piston 2 at the end part of the push rod is gradually close to the needle seat 4, because the liquid pushing part 220 is matched with the connecting part 310, the liquid medicine in the needle cylinder 3 is effectively pushed into the injection needle head 5, meanwhile, the clamping connector 403 is pressed by the pressing groove 211, the self-destruction rod 402 is retracted inwards, so that the clamping connector 403 is finally clamped and fixed in the clamping groove 212, in the withdrawing process, the locking acting force between the clamping connector 403 and the clamping opening 210 is greater than the connecting acting force between the needle seat 4 and the needle cylinder 3, so that the needle seat 4 and the injection needle head 5 are together pulled back into the needle cylinder 3 through the piston 2, and the self-destruction function is realized.
In conclusion, the disposable syringe is reasonable in structural design and simple and convenient to operate, can be automatically damaged after being used, effectively prevents the disposable syringe from being reused by lawless persons, and ensures the health and safety of medical patients and medical care personnel. Therefore, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. A self-destruction disposable syringe is characterized by comprising a push rod (1), a syringe (3) and a needle seat (4), the push rod (1) is arranged in the needle cylinder (3) in a sliding way, the front end of the needle cylinder (3) is connected with the needle seat (4) through a connecting point (8), an injection needle (5) is arranged in the needle seat (4), a protective sleeve (6) is sleeved outside the injection needle (5), the bottom of the needle seat (4) is provided with a liquid injection pipeline (401), the liquid injection pipeline (401) is communicated with the injection needle (5), the bottom of the needle seat (4) extends downwards along two sides of the edge of the liquid injection pipeline (401) and is provided with a self-destruction rod (402), the end part of the self-destruction rod (402) is provided with a clamping joint (403), the front end of the push rod (1) is fixedly connected with a piston (2), the upper end of the piston (2) is provided with a bayonet (210) which is used for being matched with the clamping connector (403) in a clamping manner.
2. A self-destructing disposable syringe according to claim 1, wherein: bayonet socket (210) are by the top to press groove (211) and below joint groove (212) to constitute, to press groove (211) and joint groove (212) intercommunication, joint (403) are in through pressing groove (211) extrusion back joint in joint groove (212).
3. A self-destructing disposable syringe according to claim 2, wherein: the outer side wall of the clamping head (403) is an arc-shaped surface, and the inner groove wall of the pressing groove (211) is an inclined surface which is in pressing contact with the arc-shaped surface.
4. A self-destructing disposable syringe according to claim 3, wherein: the maximum diameter of the clamping head (403) is larger than that of the abutting groove (211), and the maximum diameter of the clamping head (403) is smaller than that of the clamping groove (212).
5. A self-destructing disposable syringe according to claim 4, characterised in that: the upper end of joint (403) is equipped with fixed arch (404), the top in joint groove (212) is equipped with fixed recess (213), fixed arch (404) joint is in fixed recess (213).
6. A self-destructing disposable syringe according to claim 5, wherein: the front end of the needle cylinder (3) is provided with a connection part (310) with the diameter gradually reduced from back to front, the front end of the piston (2) is provided with a liquid pushing part (220) matched with the inner wall of the connection part (310), and the bayonet (210) is arranged at the front end of the liquid pushing part (220).
7. A self-destructing disposable syringe according to claim 1, wherein: before the injector is used, the tail end of the push rod (1) is connected with the tail part of the needle cylinder (3) through a safety piece (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010386919.4A CN113616880A (en) | 2020-05-09 | 2020-05-09 | Self-destruction disposable syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010386919.4A CN113616880A (en) | 2020-05-09 | 2020-05-09 | Self-destruction disposable syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113616880A true CN113616880A (en) | 2021-11-09 |
Family
ID=78376288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010386919.4A Pending CN113616880A (en) | 2020-05-09 | 2020-05-09 | Self-destruction disposable syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113616880A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3044544U (en) * | 1997-06-18 | 1997-12-22 | 文能 劉 | Syringe |
| CN2649100Y (en) * | 2003-10-27 | 2004-10-20 | 应相云 | Self-ruined safety syringe |
| US20040267209A1 (en) * | 2001-11-12 | 2004-12-30 | Takahiko Kunishige | Injection needle retractable injector |
| CN1705496A (en) * | 2002-10-18 | 2005-12-07 | 先进安全注射系统公司 | Injection syringe with retractable needle |
| US20070135764A1 (en) * | 2005-12-09 | 2007-06-14 | Chang-Tzu Chen | Safety hypodermic syringe |
| CN101143237A (en) * | 2007-10-25 | 2008-03-19 | 罗松能 | Steel needle retractable safety self-destructing syringe |
| CN202283383U (en) * | 2011-10-31 | 2012-06-27 | 成都普什制药有限公司 | Rebounding-prevention disposable injector |
| CN206067441U (en) * | 2016-08-26 | 2017-04-05 | 庆铃汽车（集团）有限公司 | Carriage door plate sealing structure |
-
2020
- 2020-05-09 CN CN202010386919.4A patent/CN113616880A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3044544U (en) * | 1997-06-18 | 1997-12-22 | 文能 劉 | Syringe |
| US20040267209A1 (en) * | 2001-11-12 | 2004-12-30 | Takahiko Kunishige | Injection needle retractable injector |
| CN1705496A (en) * | 2002-10-18 | 2005-12-07 | 先进安全注射系统公司 | Injection syringe with retractable needle |
| CN2649100Y (en) * | 2003-10-27 | 2004-10-20 | 应相云 | Self-ruined safety syringe |
| US20070135764A1 (en) * | 2005-12-09 | 2007-06-14 | Chang-Tzu Chen | Safety hypodermic syringe |
| CN101143237A (en) * | 2007-10-25 | 2008-03-19 | 罗松能 | Steel needle retractable safety self-destructing syringe |
| CN202283383U (en) * | 2011-10-31 | 2012-06-27 | 成都普什制药有限公司 | Rebounding-prevention disposable injector |
| CN206067441U (en) * | 2016-08-26 | 2017-04-05 | 庆铃汽车（集团）有限公司 | Carriage door plate sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211109 |
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| RJ01 | Rejection of invention patent application after publication |