CN112618874A - Injection protection device for intramuscular injection device - Google Patents
Injection protection device for intramuscular injection device Download PDFInfo
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- CN112618874A CN112618874A CN202110177311.5A CN202110177311A CN112618874A CN 112618874 A CN112618874 A CN 112618874A CN 202110177311 A CN202110177311 A CN 202110177311A CN 112618874 A CN112618874 A CN 112618874A
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- 238000002347 injection Methods 0.000 title claims abstract description 50
- 239000007924 injection Substances 0.000 title claims abstract description 50
- 238000010255 intramuscular injection Methods 0.000 title claims abstract description 14
- 239000007927 intramuscular injection Substances 0.000 title claims abstract description 14
- 238000003780 insertion Methods 0.000 claims abstract description 33
- 230000037431 insertion Effects 0.000 claims abstract description 33
- 230000009471 action Effects 0.000 claims abstract description 22
- 230000001681 protective effect Effects 0.000 claims abstract description 17
- 210000003205 muscle Anatomy 0.000 claims abstract description 13
- 238000007918 intramuscular administration Methods 0.000 claims abstract description 11
- 230000003139 buffering effect Effects 0.000 claims description 3
- 230000001012 protector Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 description 4
- 230000000875 corresponding effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Classifications
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- 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
- A61M5/46—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 controlling depth of insertion
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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 belongs to the technical field of safety accessories of injectors, and particularly relates to an injection protection device for an intramuscular injector. The invention achieves the purposes of simple, efficient and accurate intramuscular injection operation by arranging the limit ring for insertion, the inner tube unit, the spring unit and the radial clamping plate unit on the protective outer tube. The invention has the advantages that the structure of the protection device is reasonable and effective, the insertion action of the injector is not easy to be too deep, too fast or oblique during intramuscular injection, the action of inserting the injector into the muscle after the inner tube is clamped to the bottom is simple and efficient, the injector is provided with the clamping anti-rollback effect after the needle head is inserted in place, the needle cylinder of the injector is not required to be supported and fixed, the protection device is suitable for injectors with different needle cylinder thicknesses, and the whole intramuscular injection operation is more accurate, sanitary and convenient.
Description
Technical Field
The invention belongs to the technical field of safety accessories of injectors, and particularly relates to an injection protection device for an intramuscular injector.
Background
Injection protector refers to the cooperation syringe and uses, and mainly used promotes the auxiliary fixtures of injection operation security and cleanliness factor, and its structure mainly includes protection outer tube and intraductal stopper, and wherein the protection outer tube guarantees to cover protection and guide syringe needle male function, and intraductal stopper then is used for restricting the maximum depth of insertion of syringe needle, avoids taking place the syringe needle and inserts too dark problem.
On the other hand, when the existing injection protection device is used for intramuscular injection, the following two problems exist: firstly, the whole protection device is too long, the limit block in the tube limits the maximum insertion depth of the needle head to be insufficient, and the requirement of intramuscular injection deeper than skin injection operation cannot be met; secondly, the whole injection protection effect is not in place, and the problems of inconvenient use, low efficiency and relatively high requirement on operation precision still exist in the auxiliary injection use.
In view of the above, there is a need in the market for an injection protection device that is suitable for intramuscular injection and that allows for a simpler, more accurate, more comfortable, more hygienic and safer injection procedure.
The patent publication No. CN211751547U, Chinese utility model patent with publication No. 2020.10.27 discloses a safety protection assembly suitable for an injector, which comprises a fixed seat and a needle tube shield, wherein the needle tube shield and the fixed seat are provided with a movable clamping mechanism, an articulated resilience mechanism is arranged between the front part of the needle tube shield and the front part of the fixed seat, and after the clamping of the needle tube shield and the fixed seat is released, the resilience force of the articulated resilience mechanism enables the needle tube shield to turn around the articulated part and cover the needle tube of the injector in the articulated part; the fixed seat is provided with a mounting mechanism for mounting the fixed seat on the injector.
But the syringe safety protection subassembly in this utility model patent, there is the whole injection operation still the degree of difficulty great, the inconvenient problem of accuse of accuracy when cooperation syringe uses.
Disclosure of Invention
The invention provides an injection protection device for an intramuscular injection, which can achieve the aims of simple, efficient and accurate intramuscular injection operation by arranging a limit ring for insertion, an inner tube unit, a spring unit and a radial clamping plate unit on a protection outer tube.
The technical scheme adopted by the invention for solving the problems is as follows: an injection protection device for a muscle injector comprises a protection outer tube, an insertion limiting ring arranged on the inner ring surface of the protection outer tube, an inner tube unit arranged in the protection outer tube and used for inserting and installing an injector, a spring unit arranged on the upper surface of the insertion limiting ring and used for buffering and protecting the downward insertion action of the inner tube unit, and a radial clamping plate unit arranged at the upper end position of the outer ring surface of the protection outer tube and used for performing high-position fixing operation on the inner tube unit when the injector is inserted into the inner tube unit and performing upward anti-retraction operation on the inner tube unit after the inner tube unit is connected with the injector to complete the insertion action of muscles, wherein the vertical distance between the upper surface of the insertion limiting ring and the lower surface of the protection outer tube is 1.2-1.8 cm.
The further preferred technical scheme is as follows: the inner tube unit comprises a circular tube main body, a needle cylinder limiting ring, a lower inner lining ring, an upper inner lining ring and a to-be-clamped ring portion, wherein part of the circular tube main body is inserted into the protective outer tube and used for clamping and installing an injector, the needle cylinder limiting ring is arranged at the lower end of the inner ring surface of the circular tube main body and used for limiting and fixing the front end of the injector needle cylinder, the lower inner lining ring and the upper inner lining ring are arranged on the outer ring surface of the circular tube main body and used for clamping and sliding on the inner ring surface of the protective outer tube, and the to-be.
The further preferred technical scheme is as follows: the inner tube unit further comprises an upper annular groove provided on the annular lower surface of the circular tube body for insertion and installation of the spring unit, and an elastic clamping ring provided on the inner annular surface of the circular tube body for clamping the syringe.
The further preferred technical scheme is as follows: the to-be-clamped ring part comprises a ring main body arranged on the upper surface of the upper inner lining ring, a plurality of rings of to-be-positioned clamping ring grooves arranged on the outer ring surface of the ring main body, and an elastic ring arranged on the annular upper surface of the ring main body and used for receiving clamping anti-return action of the radial clamping plate unit on the injector.
The further preferred technical scheme is as follows: the spring unit comprises an inner pipe insertion annular groove arranged on the upper surface of the insertion limiting ring, a lower annular groove arranged on the inner bottom surface of the inner pipe insertion annular groove, and a spring main body arranged on the lower annular groove and used for upwards inserting the upper annular groove.
The further preferred technical scheme is as follows: the radial clamping plate unit comprises an arc-shaped plate arranged at the upper end of the outer ring surface of the protective outer pipe, a radial rectangular opening arranged on the arc-shaped plate, a chordwise clamping column arranged on the radial rectangular opening, and a radial plate part inserted on the radial rectangular opening and used for receiving the clamping action of the chordwise clamping column.
The further preferred technical scheme is as follows: the radial plate portion comprises a cuboid plate, an initial round hole, a to-be-positioned round hole and a channel, wherein the initial round hole is arranged on the cuboid plate, the to-be-positioned round hole is used for fixing the cuboid plate on the outer side of the protective outer tube pipe opening in a clamping mode of inserting the chordwise clamping column, the to-be-positioned round hole is arranged on the cuboid plate, the to-be-positioned round hole is used for fixing the cuboid plate on the elastic ring in a clamping mode of inserting the chordwise clamping column, the channel is arranged among the initial round hole, the to-be-positioned round hole and the to-be-positioned round hole, and the channel is used for enabling the chordwise clamping column to slide and move.
The further preferred technical scheme is as follows: the radial plate part further comprises a pair of clamping column anti-return blocks arranged on the inner side surface of the inter-hole channel between the round hole to be positioned and the round hole for injection.
The further preferred technical scheme is as follows: the vertical cross section of the anti-return block of the clamping column is in a right trapezoid shape, and the waist of the right-angle side inclines to one side of the round hole for injection.
The further preferred technical scheme is as follows: the diameters of the initial round hole, the to-be-positioned round hole and the round hole for injection are equal, the diameters of the initial round hole, the to-be-positioned round hole and the round hole for injection are 2-3mm larger than the diameters of the chord direction clamping columns, and the width of the channel among the holes is 1-3mm smaller than the diameters of the chord direction clamping columns.
The invention has the advantages that the structure of the protection device is reasonable and effective, the insertion action of the injector is not easy to be too deep, too fast or oblique during intramuscular injection, the action of inserting the injector into the muscle after the inner tube is clamped to the bottom is simple and efficient, the injector is provided with the clamping anti-rollback effect after the needle head is inserted in place, the needle cylinder of the injector is not required to be supported and fixed, the protection device is suitable for injectors with different needle cylinder thicknesses, and the whole intramuscular injection operation is more accurate, sanitary and convenient.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of a position structure of the spring unit according to the present invention.
Fig. 3 is a schematic structural view of the inner pipe unit in the present invention.
FIG. 4 is a schematic view of the radial engaging plate unit according to the present invention.
FIG. 5 is a schematic diagram of a position structure of the anti-rollback block of the engaging post according to the present invention.
Fig. 6 is a schematic view of a position structure of the to-be-engaged ring portion in the present invention.
Detailed Description
The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.
Example (b): as shown in fig. 1, 2, 3, 4, 5 and 6, an injection protection device for a muscle syringe comprises a protection outer tube 1, an insertion limiting ring 2 arranged on the inner annular surface of the protection outer tube 1, an inner tube unit 3 arranged in the protection outer tube 1 and used for inserting and installing the syringe, a spring unit 4 arranged on the upper surface of the insertion limiting ring 2 and used for buffering and protecting the downward insertion action of the inner tube unit 3, and a radial clamping plate unit 5 arranged at the upper end position of the outer annular surface of the protection outer tube 1 and used for performing a high-position fixing operation on the inner tube unit 3 when the syringe is inserted into the inner tube unit 3 and performing an upward anti-retraction operation on the inner tube unit 3 after the inner tube unit 3 is provided with the syringe to complete the muscle insertion action, wherein the vertical distance between the upper surface of the insertion limiting ring 2 and the lower surface of the protection outer tube 1 is 1.2-1.8 cm.
In this embodiment, the inner tube unit 3 is used to allow the syringe to be stably inserted into the protective outer tube 1, and to prevent the needle from being inclined during intramuscular injection, and the inner tube unit 3 is used as an indirectly fixed action site of the syringe, and is not easy to be clamped directly, and the radial clamping plate unit 5 is used to: firstly, when the inner pipe unit 3 is installed and enters the protective outer pipe 1, the radial clamping action is not triggered to ensure that the inner pipe unit 3 is smoothly installed inwards; second, the inner tube unit 3 may be fixed while a syringe is inserted into the inner tube unit 3; thirdly, after the injector finishes the needle inserting action, the inner tube unit 3 is clamped, the injector is fixed at the moment, and thus the injection operation only needs to push the piston plate of the injector inwards without holding the needle cylinder, which is very convenient.
Finally, said spring unit 4 is used in order to prevent the needle insertion from being too rapid, which would increase the injection pain.
The inner tube unit 3 includes a circular tube main body 301 which is partially inserted into the protective outer tube 1 and is used for clamping and mounting a syringe, a syringe stopper ring 302 which is provided at a lower end position of an inner annular surface of the circular tube main body 301 and is used for fixing and limiting a front end of a syringe of the syringe, a lower liner ring 303 and an upper liner ring 304 which are provided on an outer annular surface of the circular tube main body 301 and are used for clamping and sliding on an inner annular surface of the protective outer tube 1, and a to-be-clamped ring portion 305 which is provided on an upper surface of the upper liner ring 304 and is used for receiving clamping action of the radial clamping plate unit 5. The inner tube unit 3 further comprises an upper annular groove 306 provided on the annular lower surface of the circular tube body 301 for insertion-mounting the spring unit 4, and an elastic clamp ring 307 provided on the inner annular surface of the circular tube body 301 for clamping the syringe.
In this embodiment, the elastic clamping ring 307 is made of the existing medical sterile rubber, and the medical syringe with different thicknesses can be clamped by the medical clamping syringe, so as to ensure that the syringe is inserted to the bottom on the syringe limiting ring 302, and then the needle is inserted into the muscle.
In addition, the outer diameters of the lower inner lining ring 303 and the upper inner lining ring 304 are both 1-2mm smaller than the inner diameter of the protective outer tube 1, so that the circular tube main body 301 with the injector can be stably inserted downwards, and finally, the ring part 305 to be clamped is used for finally transmitting the clamping action of the radial clamping plate unit 5 to the inner tube unit 3 or the injector, so that the whole injection operation is simpler and more accurate.
The to-be-engaged ring portion 305 includes a ring main body 305a disposed on the upper surface of the upper liner ring 304, a plurality of ring-to-be-engaged ring grooves 305b disposed on the outer ring surface of the ring main body 305a, and an elastic ring 305c disposed on the ring upper surface of the ring main body 305a for receiving the engagement anti-retraction action of the radial engaging plate unit 5 with respect to the syringe.
In this embodiment, when the inner tube unit 3 is initially installed and enters the protective outer tube 1, the radial engaging plate unit 5 does not trigger the engaging action, and at this time, the portion 305 to be engaged is inserted into the inner portion, and then when the syringe needs to be completely inserted into the circular tube main body 301, the radial engaging plate unit 5 selects one engaging ring groove 305b for positioning, and at this time, the circular tube main body 301 cannot move up and down, and at this time, the syringe can be inserted into the circular tube main body 301 to the end.
Then, the inner tube unit 3 with the injector has completed all insertion actions, that is, the needle has reached the muscle position, at this time, the outer side of the elastic ring 305c is clamped by the radial clamping plate unit 5, the whole inner tube unit 3 with the injector cannot move back upwards, the needle is ensured to be stably located at the muscle position, and thus, the needle cylinder does not need to be held during injection operation.
The spring unit 4 includes an annular groove 401 for insertion of the inner tube provided on the upper surface of the insertion stopper ring 2, a lower annular groove 402 provided on the inner bottom surface of the annular groove 401 for insertion of the inner tube, and a spring main body 403 provided on the lower annular groove 402 and inserted upward into the upper annular groove 306.
In this embodiment, the material of the spring body 403 is a conventional medical safety spring with low elastic coefficient.
The radial engaging plate unit 5 includes an arc plate 501 disposed at an upper end of an outer circumferential surface of the protective outer tube 1, a radial rectangular opening 502 disposed on the arc plate 501, a chordwise engaging column 503 disposed on the radial rectangular opening 502, and a radial plate portion 504 inserted in the radial rectangular opening 502 and configured to receive an engaging action of the chordwise engaging column 503. The radial plate portion 504 includes a rectangular parallelepiped plate 504a, an initial circular hole 504b provided on the rectangular parallelepiped plate 504a and insert-engaged by the chordwise engaging posts 503 for fixing the rectangular parallelepiped plate 504a outside the mouth of the shield outer tube 1, a round hole 504c to be positioned provided on the rectangular parallelepiped plate 504a and insert-engaged by the chordwise engaging posts 503 for fixing the rectangular parallelepiped plate 504a to the engaging groove 305b to be positioned, a round hole 504d for injection provided on the rectangular parallelepiped plate 504a and insert-engaged by the chordwise engaging posts 503 for fixing the rectangular parallelepiped plate 504a to the elastic ring 305c, and an inter-hole channel 504e provided between the initial circular hole 504b, the round hole 504c to be positioned, and the circular hole 504d for injection, and used for sliding displacement of the chordwise engaging post 503.
In the present embodiment, the radial engaging plate unit 5 has three usage modes, and the corresponding effects and advantages are as follows.
First, when the inner tube unit 3 is not yet mounted in the protective outer tube 1, the string-direction engaging column 503 is engaged with the initial circular hole 504b, and the inner end of the rectangular parallelepiped plate 504a is located outside the mouth of the protective outer tube 1, so that the insertion of the inner tube unit 3 is not blocked.
Secondly, after the inner tube unit 3 is inserted and installed in place and before the injector is inserted, corresponding to the whole storage and transportation process of the protection device, at this time, the cuboid plate 504a is pushed inwards to clamp one of the clamping ring grooves 305b for placement, at this time, the injector can be inserted into the round tube main body 301 to the bottom to be inserted into the muscle, and the whole protection device also has the advantage of strong structural integrity.
Finally, the syringe needle is carefully inserted into the muscle, and at this time, the rectangular parallelepiped plate 504a is first pulled outward to snap the string-direction engaging posts 503 into the initial circular hole 504b again, and then the inner tube unit 3 with the syringe is inserted into the muscle and is put in place, and then the rectangular parallelepiped plates 504a are all pushed inward so that the string-direction engaging posts 503 enter the circular hole 504d for injection, and at this time, the rectangular parallelepiped plate 504a is snapped onto the elastic ring 305c with a relatively large engaging size to ensure that the syringe does not go back, and of course, at this time, the lower end of the circular tube main body 301 and the annular groove 401 for inserting the inner tube are not inserted to the bottom on the annular groove 401 for inserting the inner tube.
The radial plate portion 504 further includes a pair of engagement post anti-retraction blocks 504f provided on the inner side surfaces of the inter-bore grooves 504e between the round hole 504c to be positioned and the round hole 504d for injection. The vertical cross-sectional shape of the locking post anti-rollback block 504f is a right trapezoid, and the waist of the right-angled side is inclined towards one side of the circular hole 504d for injection.
In this embodiment, the introduction of the locking post anti-retraction block 504f can make the radial plate portion 504 have the advantage of being discarded after one use, that is, the chordwise locking post 503 is very difficult to reversely pass through the locking post anti-retraction block 504f and return to the circular hole 504c for injection from the circular hole 504d for injection, so that the injection protection device can be ensured to have the advantage of forcing one-time use.
The diameters of the initial circular hole 504b, the circular hole 504c to be positioned and the circular hole 504d for injection are equal, the diameters of the initial circular hole, the circular hole 504c to be positioned and the circular hole 504d for injection are 2-3mm larger than the diameters of the chordwise snap columns 503, and the width of the channel 504e between the holes is 1-3mm smaller than the diameters of the chordwise snap columns 503.
In this embodiment, the diameter of the string-direction engaging column 503 is set as required, so that the engaging strength of the string-direction engaging column in the initial circular hole 504b, the circular hole 504c to be positioned and the circular hole 504d for injection is ensured to be sufficient, and the sliding resistance in the inter-hole channel 504e is relatively suitable.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various modifications can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. These are non-inventive modifications, which are intended to be protected by patent laws within the scope of the claims appended hereto.
Claims (10)
1. The utility model provides an injection protector for intramuscular injection ware, is including protection outer tube (1) to and set up insert on the interior anchor ring (2) of ring surface in protection outer tube (1), its characterized in that: the safety protection device is characterized by further comprising an inner tube unit (3) which is arranged in the protection outer tube (1) and used for inserting and installing a syringe, a spring unit (4) which is arranged on the upper surface of the insertion limiting ring (2) and used for buffering and protecting downward insertion of the inner tube unit (3), and a radial clamping plate unit (5) which is arranged at the upper end of the outer ring surface of the protection outer tube (1) and used for performing high-position fixing operation on the inner tube unit (3) when the syringe is inserted into the inner tube unit (3) and performing upward anti-retraction operation on the inner tube unit (3) after the inner tube unit (3) is connected with the syringe to complete muscle insertion, wherein the vertical distance between the upper surface of the insertion limiting ring (2) and the lower surface of the protection outer tube (1) is 1.2-1.8 cm.
2. An injection shield apparatus for an intramuscular injector as claimed in claim 1 wherein: the inner tube unit (3) comprises a circular tube main body (301) which is partially inserted into the protective outer tube (1) and used for clamping and installing the injector, a syringe limiting ring (302) which is arranged at the lower end of the inner annular surface of the circular tube main body (301) and used for limiting and fixing the front end of the syringe of the injector, a lower lining ring (303) and an upper lining ring (304) which are arranged on the outer annular surface of the circular tube main body (301) and used for clamping and sliding on the inner annular surface of the protective outer tube (1), and a to-be-clamped ring part (305) which is arranged on the upper surface of the upper lining ring (304) and used for receiving the clamping action of the radial clamping plate unit (5).
3. An injection shield apparatus for an intramuscular injector as claimed in claim 2 wherein: the inner tube unit (3) further comprises an upper annular groove (306) provided on the annular lower surface of the circular tube body (301) for insertion-mounting the spring unit (4), and an elastic clamp ring (307) provided on the inner annular surface of the circular tube body (301) for clamping the syringe.
4. An injection shield apparatus for an intramuscular injector as claimed in claim 2 wherein: the ring to be clamped (305) comprises a circular ring main body (305 a) arranged on the upper surface of the upper lining ring (304), a plurality of clamping ring grooves (305 b) for ring to be positioned arranged on the outer circular surface of the circular ring main body (305 a), and an elastic ring (305 c) arranged on the circular upper surface of the circular ring main body (305 a) and used for receiving the clamping anti-backing action of the radial clamping plate unit (5) to the syringe.
5. An injection shield apparatus for an intramuscular injector as in claim 3 wherein: the spring unit (4) comprises an inner pipe insertion annular groove (401) arranged on the upper surface of the insertion limiting ring (2), a lower annular groove (402) arranged on the inner bottom surface of the inner pipe insertion annular groove (401), and a spring main body (403) arranged on the lower annular groove (402) and used for being upwards inserted into the upper annular groove (306).
6. An injection shield apparatus for an intramuscular injector as in claim 4 wherein: the radial clamping plate unit (5) comprises an arc-shaped plate (501) arranged at the upper end of the outer ring surface of the protective outer pipe (1), a radial rectangular opening (502) arranged on the arc-shaped plate (501), a chordwise clamping column (503) arranged on the radial rectangular opening (502), and a radial plate portion (504) inserted on the radial rectangular opening (502) and used for receiving the clamping action of the chordwise clamping column (503).
7. An injection shield apparatus for an intramuscular injector as in claim 6 wherein: the radial plate portion (504) includes a rectangular parallelepiped plate (504 a), an initial circular hole (504 b) provided on the rectangular parallelepiped plate (504 a) and inserted-engaged by the chordwise engaging posts (503) for fixing the rectangular parallelepiped plate (504 a) outside the mouth of the shield outer tube (1), a round hole (504 c) provided on the rectangular parallelepiped plate (504 a) and inserted-engaged by the chordwise engaging posts (503) for fixing the rectangular parallelepiped plate (504 a) on the engaging ring groove (305 b) for positioning, a circular hole (504 d) for injection provided on the rectangular parallelepiped plate (504 a) and inserted-engaged by the chordwise engaging posts (503) for fixing the rectangular parallelepiped plate (504 a) on the elastic ring (305 c), and a round hole (504 d) for injection provided between the initial circular hole (504 b), the round hole (504 c) for positioning and the round hole (504 d) for positioning and the chordwise engaging posts (503) A slidingly displaced two-aperture channel (504 e).
8. An injection shield apparatus for an intramuscular injector as claimed in claim 7 wherein: the radial plate portion (504) further includes a pair of engaging column anti-retraction blocks (504 f) provided on the inner side surface of the inter-hole channel (504 e) between the round hole (504 c) to be positioned and the round hole (504 d) for injection.
9. An injection shield apparatus for an intramuscular injector as in claim 8 wherein: the vertical section of the locking column anti-return block (504 f) is in the shape of a right trapezoid, and the waist of the right-angle side inclines towards one side of the round hole (504 d) for injection.
10. An injection shield apparatus for an intramuscular injector as claimed in claim 7 wherein: the diameters of the initial round hole (504 b), the round hole (504 c) to be positioned and the round hole (504 d) for injection are equal, the diameters of the initial round hole, the round hole to be positioned and the round hole are 2-3mm larger than the diameters of the chord direction clamping columns (503), and the width of the channel (504 e) between the holes is 1-3mm smaller than the diameters of the chord direction clamping columns (503).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110177311.5A CN112618874B (en) | 2021-02-09 | 2021-02-09 | Injection protection device for intramuscular injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110177311.5A CN112618874B (en) | 2021-02-09 | 2021-02-09 | Injection protection device for intramuscular injector |
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| Publication Number | Publication Date |
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| CN112618874A true CN112618874A (en) | 2021-04-09 |
| CN112618874B CN112618874B (en) | 2023-06-02 |
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| CN202110177311.5A Active CN112618874B (en) | 2021-02-09 | 2021-02-09 | Injection protection device for intramuscular injector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023083246A1 (en) * | 2021-11-11 | 2023-05-19 | 上海倍莱弗科技有限公司 | Safety protection device for syringe |
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| CN112618874B (en) | 2023-06-02 |
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Denomination of invention: An injection protective device for muscle injectors Granted publication date: 20230602 Pledgee: China Construction Bank Corporation Shanghai Songjiang Branch Pledgor: Shanghai beileifu Technology Co.,Ltd.|Shanghai xinyaopaike Medical Technology Co.,Ltd. Registration number: Y2024980002845 |
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