CN113730731A - Anti-needle-stick safety device for injection device - Google Patents
Anti-needle-stick safety device for injection device Download PDFInfo
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- CN113730731A CN113730731A CN202111020334.1A CN202111020334A CN113730731A CN 113730731 A CN113730731 A CN 113730731A CN 202111020334 A CN202111020334 A CN 202111020334A CN 113730731 A CN113730731 A CN 113730731A
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- injection
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- 238000002347 injection Methods 0.000 title claims abstract description 189
- 239000007924 injection Substances 0.000 title claims abstract description 189
- 208000012266 Needlestick injury Diseases 0.000 title claims description 14
- 210000002445 nipple Anatomy 0.000 claims abstract description 23
- 238000001467 acupuncture Methods 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims description 15
- 230000002265 prevention Effects 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 5
- 206010011409 Cross infection Diseases 0.000 abstract description 4
- 206010029803 Nosocomial infection Diseases 0.000 abstract description 4
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 230000008602 contraction Effects 0.000 abstract 1
- 239000003814 drug Substances 0.000 description 7
- 239000000243 solution Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 206010001526 Air embolism Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
-
- 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
- A61M5/178—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
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hematology (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (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 an anti-acupuncture safety device for an injection device, which comprises an injection needle cylinder, an injection piston rod, an auxiliary positioning assembly, a front end nipple, an injection needle bolt, an injection needle, two groups of mounting assemblies, a contraction assembly and a limiting assembly. The linkage rod is driven to move along with the rotation of the rotating sleeve ring, the linkage rod slides in the limiting cavity and compresses the limiting spring, the movement of the linkage rod drives the positioning baffle to move, so that the positioning baffle and the positioning stop block are separated in a staggered mode, the linkage injection needle is collapsed towards the interior of the injection needle cylinder under the reset driving of the extension spring, the storage treatment of the injection needle is realized, the situation that the injection needle is exposed to cause accidental puncture and cross infection after injection is completed is avoided, in addition, under the matching of the auxiliary positioning assembly, the linkage rod pushes the sliding sleeve ring to correspondingly slide on the outer surface of the injection needle cylinder, the auxiliary positioning of the injection piston rod is realized, and the situation that the incomplete injection is caused by the force application point of a worker is not completed is avoided.
Description
Technical Field
The invention relates to the technical field of injectors, in particular to a needle-prick prevention safety device for an injection device.
Background
The injector is a common medical appliance, is mainly used for injecting liquid medicine or drawing liquid, can also be used for medical equipment and containers, and scientific instruments such as those in chromatography penetrate through a rubber diaphragm for injection, so that air embolism can be caused when gas is injected into a blood vessel.
The conventional device has the following disadvantages: the whole security of current syringe is relatively poor, can't burst to contract to accomodate the syringe needle after the injection is accomplished, the very easy unexpected acupuncture's situation that appears has reduced the security of syringe, has increased the follow-up degree of difficulty of retrieving the syringe simultaneously, has improved the recovery cost, and current syringe does not possess the assistance-localization real-time processing, very easily causes the medicament to carry too fast, the not thorough situation of carrying because the change of point of application of force when carrying out the medicament propelling movement.
Disclosure of Invention
It is an object of the present invention to provide a needle-stick prevention safety device for an injection device to solve the problem.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a prevent acupuncture safety device for injection apparatus, includes injection cylinder, injection piston rod, auxiliary positioning subassembly, front end nipple, injection pintle, syringe needle, two sets of installation component, shrink subassembly and spacing subassembly, the injection piston rod corresponds sliding seal and installs in the injection cylinder, auxiliary positioning subassembly matches and installs between injection cylinder, injection piston rod, front end nipple intercommunication is installed on the injection cylinder top, the injection pintle cover is established outside the front end nipple, and is two sets of the installation component corresponds and installs on injection pintle top, bottom, and the installation component output corresponds the block with the front end nipple, the syringe needle slides and alternates in the injection pintle, shrink subassembly installs the front end in the injection pintle, and shrink subassembly and syringe needle tail-end connection, spacing subassembly rotates the cover and establishes outside the injection pintle, the limiting component is correspondingly clamped and fixed with the injection needle;
the mounting assembly comprises a mounting cavity, a fixing rod, a positioning spring and a positioning fixing groove, the mounting cavity is correspondingly formed in the top end and the bottom end of the tail of the injection pintle, the fixing rod is slidably arranged in the mounting cavity in a penetrating mode, the positioning spring is arranged in the mounting cavity and correspondingly sleeved outside the fixing rod, the positioning fixing groove is formed in the top end and the bottom end of a front nipple, and the tail of the fixing rod correspondingly penetrates into the positioning fixing groove;
the retraction assembly comprises a storage cavity, two groups of extension springs and two groups of limiting fixing blocks, the storage cavity is formed in the front end of the inside of the injection pintle, the two groups of extension springs are correspondingly embedded in the top end and the bottom end of the storage cavity, the two groups of limiting fixing blocks are correspondingly arranged on the top end and the bottom end of the tail part of the injection needle, and the tail part of the extension spring is attached to the limiting fixing blocks;
the limiting assembly comprises a rotating sleeve ring, two groups of limiting cavities, two groups of linkage rods, two groups of limiting springs, two groups of positioning baffles and two groups of positioning stop blocks, the rotating sleeve ring is rotatably sleeved at the head end of the outer surface of the injection needle bolt, the two groups of limiting cavities are symmetrically embedded at the top end and the bottom end in the injection needle bolt, the two groups of linkage rods are respectively connected with the rotating sleeve ring, the linkage rods are correspondingly and slidably mounted in the limiting cavities, the two ends of each limiting spring are respectively connected with the inner wall of the limiting cavity and the linkage rods, the positioning baffles are correspondingly locked and mounted at the tail parts of the linkage rods, the two groups of positioning stop blocks are fixedly mounted on the upper surface and the lower surface of the injection needle, the positioning baffles are correspondingly arranged with the positioning stop blocks, and the initial positions of the positioning baffles can stop and limit the positioning stop blocks;
the linkage rod rotates along with the rotating lantern ring in the injection pintle and the limiting cavity, and the injection pintle and the limiting cavity are correspondingly provided with sliding rails corresponding to the linkage rod.
In a further preferred embodiment of the present invention, the injection needle and the needle plug are disposed to correspond to each other, and a joint between the injection needle and the needle plug is sealed.
As a further preferred of the present technical solution, a contact position between the injection cylinder and the injection piston rod is subjected to sealing treatment, and a capacity bar is installed on a sidewall of the injection cylinder.
As a further preferred of this technical scheme, auxiliary positioning subassembly includes fixed plate, the slip lantern ring, two sets of slide bars and two sets of reset spring, the fixed cover of fixed plate is established afterbody outside the injection piston pole, the slip lantern ring corresponds the slip cover and establishes outside the injection cylinder, and is two sets of the slide bar slides and wears to establish injection cylinder end department, and the slide bar both ends are connected with slip lantern ring, fixed plate respectively, reset spring installs between injection cylinder afterbody, the slip lantern ring, and reset spring corresponds the cover and establishes outside the slide bar.
As a further preferred aspect of the present technical solution, the inner wall of the sliding collar is correspondingly attached to the outer wall of the injection syringe in a sliding manner, and the sliding collar and the head end of the injection piston rod are located on the same axis.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the limiting assembly is arranged, the positioning baffle is utilized to block the positioning baffle, so that the situation that the injection needle is accidentally collapsed is avoided, after the subsequent injection is finished, a worker rotates the rotating lantern ring to drive the linkage rod to move along, the linkage rod slides in the limiting cavity and compresses the limiting spring, so that the positioning baffle and the positioning baffle are separated in a staggered mode, the injection needle is interlocked to collapse towards the interior of the injection needle cylinder under the reset driving of the extension spring, the storage treatment of the injection needle is realized, the situation that the injection needle is exposed to cause accidental puncture to cause cross infection after the injection is finished is avoided, and the safety of the injector is improved;
2. according to the invention, the auxiliary positioning assembly is arranged, so that a worker pushes the injection piston rod to push a medicament, and the sliding sleeve ring is pushed to correspondingly slide on the outer surface of the injection syringe under the transmission of the linkage rod, so that the auxiliary positioning of the injection piston rod is realized, the stable pushing of the worker is ensured, the condition that the incomplete injection is caused by no application point of the worker is avoided, and the medicament capacity in the injection syringe can be visually displayed through the sliding sleeve ring due to the fact that the capacity bar is arranged on the outer surface of the injection syringe;
3. according to the injection needle plug, the installation assembly is arranged, the fixing rod is driven to extend in the installation cavity under the pushing of the positioning spring, so that the fixing rod is correspondingly inserted into the positioning fixing groove, the injection needle plug and the front end nipple are fixedly reinforced, and when the injection needle plug is disassembled subsequently, a worker pulls the fixing rod upwards to compress the positioning spring, so that the injection needle plug and the front end nipple are in a relatively separated state, and the worker can conveniently and quickly disassemble the injection needle plug.
Drawings
FIG. 1 is an overall front view of a needle stick prevention safety device for an injection device;
FIG. 2 is a schematic view of a secondary positioning assembly for a needle stick prevention safety device of an injection device;
FIG. 3 is a schematic view of a needle hub and needle attachment of a needle stick safety device for use with an injection device;
FIG. 4 is a schematic view of a retraction assembly of a needle stick prevention safety device for an injection device;
FIG. 5 is a schematic view of a stopper assembly of a needle stick prevention safety device for an injection device;
FIG. 6 is a schematic view of a needle stick prevention safety device for an injection device after collapse;
fig. 7 is an enlarged schematic view at a in fig. 4 of a needle stick prevention safety device for an injection device.
In the figure: 1. an injection syringe; 2. an injection piston rod; 3. the front papilla; 4. a needle plug; 5. an injection needle; 6. a capacity bar; 7. a fixing plate; 8. a slip collar; 9. a slide bar; 10. a return spring; 11. a mounting cavity; 12. fixing the rod; 13. a positioning spring; 14. positioning a fixed groove; 15. a receiving cavity; 16. an extension spring; 17. a limit fixing block; 18. rotating the lantern ring; 19. a limiting cavity; 20. a linkage rod; 21. a limiting spring; 22. positioning a baffle plate; 23. and positioning the stop block.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1-7, the present invention provides a technical solution: a prevent acupuncture safety device for injection apparatus, includes injection cylinder 1, injection piston rod 2, auxiliary positioning subassembly, front end nipple 3, injection pintle 4, syringe needle 5, two sets of installation component, shrink subassembly and spacing subassembly, injection piston rod 2 corresponds sliding seal and installs in injection cylinder 1, the matching of auxiliary positioning subassembly is installed between injection cylinder 1, injection piston rod 2, front end nipple 3 intercommunication is installed on injection cylinder 1 top, injection pintle 4 cover is established outside front end nipple 3, two sets of installation component corresponds and installs on 4 tops of injection pintle, bottom, and installation component output and front end nipple 3 correspond the block, syringe needle 5 slides and alternates in injection pintle 4, shrink subassembly installs the front end in injection pintle 4, and shrink subassembly and 5 end connections of syringe needle, the limiting component is rotatably sleeved outside the injection needle bolt 4 and is correspondingly clamped and fixed with the injection needle 5;
the mounting assembly comprises a mounting cavity 11, a fixing rod 12, a positioning spring 13 and a positioning fixing groove 14, the installation cavity 11 is correspondingly arranged at the top end and the bottom end of the tail part of the injection pintle 4, the fixed rod 12 is slidably arranged in the installation cavity 11 in a penetrating way, the positioning spring 13 is arranged in the installation cavity 11, the positioning spring 13 is correspondingly sleeved outside the fixed rod 12, the positioning fixed groove 14 is arranged at the top end and the bottom end of the nipple 3 at the front end, the tail part of the fixed rod 12 is correspondingly inserted into the positioning fixed groove 14, under the push of the positioning spring 13, the fixing rod 12 is driven to extend in the installation cavity 11, so that the fixing rod 12 correspondingly penetrates into the positioning fixing groove 14, the reinforcing and fixing of the injection pintle 4 and the front nipple 3 are realized, when the needle is disassembled subsequently, the worker pulls the fixing rod 12 upwards to compress the positioning spring 13, so that the injection pintle 4 and the front nipple 3 are in a relative separation state;
the retraction assembly comprises a storage cavity 15, two groups of extension springs 16 and two groups of limiting fixed blocks 17, wherein the storage cavity 15 is arranged at the front end in the injection pintle 4, the two groups of extension springs 16 are correspondingly embedded at the top end and the bottom end in the storage cavity 15, the two groups of limiting fixed blocks 17 are correspondingly arranged at the top end and the bottom end of the tail part of the injection needle 5, the tail part of each extension spring 16 is attached to the corresponding limiting fixed block 17, and the linkage rod 20 slides in the limiting cavity 19 and compresses the limiting spring 21, so that the positioning baffle 22 and the positioning baffle 23 are separated in a staggered mode;
the limiting assembly comprises a rotating lantern ring 18, two groups of limiting cavities 19, two groups of linkage rods 20, two groups of limiting springs 21, two groups of positioning baffles 22 and two groups of positioning stoppers 23, the rotating lantern ring 18 is rotatably sleeved at the head end of the outer surface of the injection needle bolt 4, the two groups of limiting cavities 19 are symmetrically embedded at the top end and the bottom end in the injection needle bolt 4, the two groups of linkage rods 20 are respectively connected with the rotating lantern ring 18, the linkage rods 20 are correspondingly and slidably mounted in the limiting cavities 19, the two ends of the limiting springs 21 are respectively connected with the inner wall of the limiting cavities 19 and the linkage rods 20, the positioning baffles 22 are correspondingly locked and mounted at the tail parts of the linkage rods 20, the two groups of positioning stoppers 23 are fixedly mounted on the upper surface and the lower surface of the injection needle 5, the positioning baffles 22 and the positioning stoppers 23 are correspondingly arranged, the initial positions of the positioning baffles 22 can block the positioning stoppers 23 for limiting, and the positioning stoppers 23 are blocked by the positioning baffles 22, the condition that the injection needle 5 is accidentally collapsed is avoided, after the subsequent injection is finished, a worker rotates the rotating sleeve ring 18 to drive the linkage rod 20 to move along, the linkage rod 20 slides in the limiting cavity 19 and compresses the limiting spring 21, so that the positioning baffle 22 and the positioning stop block 23 are separated in a staggered mode, at the moment, the linkage injection needle 5 collapses towards the inside of the injection needle cylinder 1 under the reset driving of the extension spring 16, the storage treatment of the injection needle 5 is realized, and the condition that the injection needle 5 is exposed to accidental puncture and cross infection after the injection is finished is avoided;
the linkage rod 20 rotates along with the rotating lantern ring 18 in the injection pintle 4 and the limiting cavity 19, and sliding rails corresponding to the linkage rod 20 are correspondingly arranged on the injection pintle 4 and the limiting cavity 19.
In this embodiment, specifically, the injection needle 5 and the injection pintle 4 are disposed correspondingly, and a joint between the injection needle 5 and the injection pintle 4 is subjected to a sealing treatment.
In this embodiment, specifically, the contact position between the injection syringe 1 and the injection piston rod 2 is subjected to sealing treatment, and the sidewall of the injection syringe 1 is provided with a capacity bar 6.
In this embodiment, specifically, the auxiliary positioning assembly includes a fixing plate 7, a sliding collar 8, two sets of sliding rods 9, and two sets of return springs 10, the fixed plate 7 is fixedly sleeved at the outer tail part of the injection piston rod 2, the sliding lantern ring 8 is correspondingly sleeved outside the injection needle cylinder 1 in a sliding way, two groups of sliding rods 9 are arranged at the end of the injection needle cylinder 1 in a sliding way, and the two ends of the sliding rod 9 are respectively connected with the sliding sleeve ring 8 and the fixing plate 7, the reset spring 10 is arranged between the tail part of the injection needle cylinder 1 and the sliding sleeve ring 8, the reset spring 10 is correspondingly sleeved outside the sliding rod 9, under the transmission of the sliding rod 9, the sliding lantern ring 8 is pushed to correspondingly slide on the outer surface of the injection syringe 1, so that the auxiliary positioning of the injection piston rod 2 is realized, the stable pushing of workers is ensured, and the condition that the force application points of the workers do not cause incomplete injection is avoided.
In this embodiment, specifically, the inner wall of the sliding collar 8 is correspondingly attached to the outer wall of the injection syringe 1 in a sliding manner, and the sliding collar 8 and the head end of the injection piston rod 2 are located on the same axis.
The working principle is as follows: when in use, the injection pintle 4 is correspondingly sleeved on the front nipple 3, the injection needle 5 can be preliminarily positioned, the fixing rod 12 is driven to extend in the mounting cavity 11 under the pushing of the positioning spring 13 by arranging the mounting assembly, so that the fixing rod 12 is correspondingly inserted into the positioning fixing groove 14, the injection pintle 4 and the front nipple 3 are reinforced and fixed, the mounting stability of the injection pintle 4 is ensured, when in subsequent disassembly, a worker pulls the fixing rod 12 upwards to compress the positioning spring 13, the bottom of the fixing rod 12 is separated from the positioning fixing groove 14, the injection pintle 4 and the front nipple 3 are in a relative separation state, the worker can rapidly disassemble the injection pintle 4 conveniently, the auxiliary positioning assembly is arranged, and in the injection process, the two ends of the sliding rod 9 are respectively connected with the sliding sleeve ring 8 and the fixing plate 7, therefore, the worker pushes the injection piston rod 2 to push the medicament, under the transmission of the sliding rod 9, the sliding sleeve ring 8 is pushed to correspondingly slide on the outer surface of the injection syringe 1, the auxiliary positioning of the injection piston rod 2 is realized, the stable pushing of the worker is ensured, the condition that the force application point of the worker is not right, and the incomplete injection is avoided, because the capacity strip 6 is arranged on the outer surface of the injection syringe 1, the medicament capacity in the injection syringe 1 can be visually displayed through the sliding sleeve ring 8, the worker can conveniently operate and use the injection syringe, through the arrangement of the limiting component, the positioning baffle plate 22 is used for blocking the positioning baffle plate 23, the positioning of the injection needle 5 is realized, and the condition that the injection needle 5 is accidentally contracted is avoided, after the subsequent injection is completed, the worker rotates the rotating sleeve ring 18, the linkage rod 20 is driven to move along, the linkage rod 20 slides in the limiting cavity 19 and compresses the limiting spring 21, the removal of gangbar 20 has driven the displacement of positioning baffle 22 for positioning baffle 22 and the separation of location dog 23 dislocation, this moment under extension spring 16's reset drive, linkage syringe needle 5 is crumpled in towards injection cylinder 1, has realized taking in the processing to syringe needle 5, avoids exposing of syringe needle 5 after the injection is accomplished the unexpected condition of stabbing emergence cross infection, has promoted the security of this syringe, the staff of being convenient for operates and uses.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a prevent acupuncture safety device for injection apparatus, its characterized in that, includes injection cylinder (1), injection piston rod (2), auxiliary positioning subassembly, front end nipple (3), injection pintle (4), syringe needle (5), two sets of installation component, shrink subassembly and spacing subassembly, injection piston rod (2) correspond sliding seal and install in injection cylinder (1), auxiliary positioning subassembly matches and installs between injection cylinder (1), injection piston rod (2), front end nipple (3) intercommunication is installed on injection cylinder (1) top, injection pintle (4) cover is established outside front end nipple (3), two sets of the installation component corresponds and installs on injection pintle (4) top, bottom, and installation component output and front end nipple (3) correspond the block, syringe needle (5) slide and alternate in injection pintle (4), the retraction assembly is arranged at the front end in the injection needle bolt (4) and is connected with the tail part of the injection needle (5), the limiting assembly is rotatably sleeved outside the injection needle bolt (4) and is correspondingly clamped and fixed with the injection needle (5);
the mounting assembly comprises a mounting cavity (11), a fixing rod (12), a positioning spring (13) and a positioning fixing groove (14), the mounting cavity (11) is correspondingly formed in the top end and the bottom end of the tail of the injection pintle (4), the fixing rod (12) is slidably arranged in the mounting cavity (11), the positioning spring (13) is correspondingly sleeved outside the fixing rod (12), the positioning fixing groove (14) is formed in the top end and the bottom end of the front nipple (3), and the tail of the fixing rod (12) correspondingly penetrates into the positioning fixing groove (14);
the retraction assembly comprises a storage cavity (15), two groups of extension springs (16) and two groups of limiting fixing blocks (17), the storage cavity (15) is arranged at the front end in the injection pintle (4), the two groups of extension springs (16) are correspondingly embedded at the top end and the bottom end in the storage cavity (15), the two groups of limiting fixing blocks (17) are correspondingly arranged at the top end and the bottom end of the tail part of the injection needle (5), and the tail parts of the extension springs (16) are attached to the limiting fixing blocks (17);
the limiting assembly comprises a rotating sleeve ring (18), two groups of limiting cavities (19), two groups of linkage rods (20), two groups of limiting springs (21), two groups of positioning baffle plates (22) and two groups of positioning baffle blocks (23), the rotating sleeve ring (18) is rotatably sleeved at the outer surface head end of the injection pintle (4), the two groups of limiting cavities (19) are symmetrically embedded at the top end and the bottom end in the injection pintle (4), the two groups of linkage rods (20) are respectively connected with the rotating sleeve ring (18), the linkage rods (20) are correspondingly and slidably mounted in the limiting cavities (19), the two ends of each limiting spring (21) are respectively connected with the inner wall of each limiting cavity (19) and the linkage rods (20), the positioning baffle plates (22) are correspondingly locked and mounted at the tail parts of the linkage rods (20), the two groups of positioning baffle blocks (23) are fixedly mounted on the upper surface and the lower surface of the injection needle (5), and the positioning baffle plates (22) are correspondingly arranged with the positioning baffle blocks (23), the initial position of the positioning baffle (22) can block and limit the positioning stop block (23);
the linkage rod (20) rotates along with the rotating sleeve ring (18) in the injection pintle (4) and the limiting cavity (19), and sliding rails corresponding to the linkage rod (20) are correspondingly arranged on the injection pintle (4) and the limiting cavity (19).
2. A needle stick prevention safety device for an injection device according to claim 1, wherein: the injection needle (5) and the injection needle bolt (4) are arranged correspondingly, and the joint of the injection needle (5) and the injection needle bolt (4) is subjected to sealing treatment.
3. A needle stick prevention safety device for an injection device according to claim 1, wherein: the contact position of the injection syringe (1) and the injection piston rod (2) is subjected to sealing treatment, and the side wall of the injection syringe (1) is provided with a capacity strip (6).
4. A needle stick prevention safety device for an injection device according to claim 1, wherein: supplementary locating component includes fixed plate (7), the slip lantern ring (8), two sets of slide bar (9) and two sets of reset spring (10), fixed plate (7) fixed cover is established afterbody outside injection piston rod (2), the slip lantern ring (8) correspond the slip cover and establish injection cylinder (1) outside, and are two sets of slide bar (9) slide and wear to establish in injection cylinder (1) end department, and slide bar (9) both ends are connected with the slip lantern ring (8), fixed plate (7) respectively, reset spring (10) are installed between injection cylinder (1) afterbody, the slip lantern ring (8), and reset spring (10) correspond the cover and establish in slide bar (9) outside.
5. A needlestick prevention safety device for an injection device as claimed in claim 4, in which: the inner wall of the sliding sleeve ring (8) is correspondingly attached to the outer wall of the injection needle cylinder (1) in a sliding manner, and the sliding sleeve ring (8) and the head end of the injection piston rod (2) are positioned on the same axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111020334.1A CN113730731A (en) | 2021-09-01 | 2021-09-01 | Anti-needle-stick safety device for injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111020334.1A CN113730731A (en) | 2021-09-01 | 2021-09-01 | Anti-needle-stick safety device for injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113730731A true CN113730731A (en) | 2021-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111020334.1A Pending CN113730731A (en) | 2021-09-01 | 2021-09-01 | Anti-needle-stick safety device for injection device |
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| Country | Link |
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| CN (1) | CN113730731A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115970096A (en) * | 2022-12-23 | 2023-04-18 | 中国人民解放军西部战区总医院 | A protective device for nursing injections |
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| WO2018131809A1 (en) * | 2017-01-14 | 2018-07-19 | 최규동 | Safety pen needle structure for preventing reuse |
| CN108888838A (en) * | 2018-08-20 | 2018-11-27 | 吉林大学 | A kind of anti-needle stick injury needle |
| CN211024543U (en) * | 2019-07-09 | 2020-07-17 | 吉林大学第一医院 | A stable drug delivery device for intracardiac postoperative nursing |
| CN213220037U (en) * | 2020-05-06 | 2021-05-18 | 扬州大学附属医院 | Anesthetic needle for injection |
| CN212699940U (en) * | 2020-09-09 | 2021-03-16 | 浙江康康医疗器械股份有限公司 | Rotary retraction type puncture-proof syringe |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115970096A (en) * | 2022-12-23 | 2023-04-18 | 中国人民解放军西部战区总医院 | A protective device for nursing injections |
| CN115970096B (en) * | 2022-12-23 | 2025-04-25 | 中国人民解放军西部战区总医院 | A protective device for injection for nursing use |
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Address after: 225400 No.88, Nanyuan Road, West Industrial Agglomeration Area, Taixing City, Taizhou City, Jiangsu Province Applicant after: Jiangsu Zhiyu Medical Equipment Co.,Ltd. Address before: 225400 No.88, Nanyuan Road, West Industrial Agglomeration Area, Taixing City, Taizhou City, Jiangsu Province Applicant before: JIANGSU ZHIYU MEDICAL EQUIPMENT CO.,LTD. |
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