CN117100949B - Take safety protection formula to independently inject general syringe needle - Google Patents
Take safety protection formula to independently inject general syringe needle Download PDFInfo
- Publication number
- CN117100949B CN117100949B CN202311252370.XA CN202311252370A CN117100949B CN 117100949 B CN117100949 B CN 117100949B CN 202311252370 A CN202311252370 A CN 202311252370A CN 117100949 B CN117100949 B CN 117100949B
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- China
- Prior art keywords
- sheath
- needle
- injection
- needle seat
- injection needle
- Prior art date
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- 238000002347 injection Methods 0.000 claims abstract description 134
- 239000007924 injection Substances 0.000 claims abstract description 134
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 9
- 230000009471 action Effects 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims description 4
- 239000003814 drug Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 238000005452 bending Methods 0.000 description 2
- 230000009429 distress Effects 0.000 description 2
- 229940124645 emergency medicine Drugs 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010241 blood sampling Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
- A61M5/2033—Spring-loaded one-shot injectors with or without automatic needle insertion
-
- 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
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
-
- 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
- A61M5/3202—Devices for protection of the needle before use, e.g. caps
-
- 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
- A61M5/3287—Accessories for bringing the needle into the body; Automatic needle insertion
-
- 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
-
- 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
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
- A61M2005/2026—Semi-automatic, e.g. user activated piston is assisted by additional source of energy
Abstract
The invention discloses a universal injection needle with a safety protection function for autonomous injection, which relates to the technical field of medical instruments and comprises an upper sheath, wherein the inner wall of the upper sheath is fixedly connected with a needle seat sheath, the inside of the needle seat sheath is fixedly connected with a needle seat, and the middle part of the needle seat is fixedly connected with an injection needle; the outer wall of the needle seat sheath is connected with a power sheath in a sliding manner, and the outer wall of the power sheath is connected with a protection base in a sliding manner; a pushing spring is fixedly connected between one side of the needle seat and the protection base; according to the invention, by arranging the structures such as the pop-up power sheath and the protection base, the needle is protected, the damage of the needle when not in use is avoided, and the safety of the needle in the transportation and transfer process is improved; compared with the existing autonomous injection needle, the injection can be extracted and allocated on site, and the flexibility of injection use is improved.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a universal injection needle with a safety protection function for autonomous injection.
Background
Disposable syringes are commonly used medical devices for injecting medical fluids, which require injection procedures by a medical professional during routine use. And when the emergency medicine is needed to be injected in various distress occasions such as field exploration, army, household critical patients and the like, independent professional personnel are needed to perform autonomous injection operation.
However, the existing autonomous injector does not have an injection depth control function, which brings a certain obstacle to the operation of non-professionals, and the existing autonomous injection needle is generally configured and stored in the syringe in advance, so that the injection cannot be autonomously prepared according to actual use requirements, and the use flexibility is poor. There is therefore a need for improvements.
Disclosure of Invention
The invention aims to provide an autonomous injection universal injection needle with a safety protection function, so as to solve the problems in the prior art in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a take safety protection formula to independently inject general syringe needle, includes the oversheath, the one end block of oversheath is connected with the oversheath; the inner wall of the upper sheath is fixedly connected with a needle seat sheath, the inside of the needle seat sheath is fixedly connected with a needle seat, the middle part of one side of the needle seat is fixedly connected with an injection needle, the injection needle comprises a needle point, a needle stem and a needle bolt, and the needle bolt part is fixedly connected with the middle part of the needle seat;
the outer wall of the needle seat sheath is connected with a power sheath in a sliding manner, the outer wall of the power sheath is connected with a protection base in a sliding manner, and a guide needle hole corresponding to the injection needle is formed in the middle of the protection base; a pushing spring is fixedly connected between one side of the needle seat and the protection base, two sides of the outer wall of the protection base are fixedly connected with triggering spring pieces, two sides of the upper sheath are provided with clamping interfaces, and the triggering spring pieces are in clamping connection with the clamping interfaces;
the outer wall of the needle seat sheath is provided with a needle seat sliding groove, the inner wall of the power sheath is fixedly connected with a needle seat convex block, and the needle seat convex block is arranged in the needle seat sliding groove in a sliding way; the outer wall of the power sheath is provided with a sheath chute, the inner wall of the protection base is fixedly connected with a sheath convex block, and the sheath convex block is arranged in the sheath chute in a sliding manner.
As a further scheme of the invention: the needle seat sliding groove comprises a vertical groove which is vertically arranged, one side of the vertical groove is provided with an inclined groove which is in an inverted V shape, one end of the bottom of the inclined groove is communicated with the bottom of one side of the vertical groove, and the other end of the bottom of the inclined groove transversely extends to form a positioning section;
the sheath sliding groove comprises three vertical sections, the three vertical sections are arranged in parallel, a horizontal section is arranged between any two adjacent vertical sections, the bottoms of the first vertical section and the second vertical section are communicated through the first horizontal section, and the tops of the second vertical section and the third vertical section are communicated through the second horizontal section; namely, the sheath sliding groove is a continuous bending groove which is formed by sequentially connecting a first vertical section, a first horizontal section, a second vertical section, a second horizontal section and a third vertical section, wherein the bottom of the third vertical section is provided with a locking section in a downward inclined extending manner; the vertical direction indicated by the vertical groove and the vertical section is the length direction of the injection needle.
As a further scheme of the invention: the middle part of the oblique groove is provided with a plurality of obliquely arranged adjusting track grooves, and the communicating parts of the upper ends of the adjusting track grooves and the oblique groove are fixedly connected with reversing spring plates.
As a further scheme of the invention: the using method of the injection needle comprises the following steps:
step one: fixedly connecting a needle seat on a needle seat sheath with an external syringe;
step two: removing the outer sheath to expose the injection needle, inserting the injection needle into the medicament bottle, and extracting injection;
step three: after extraction is completed, the triggering spring piece is pressed down, the pushing spring pushes the protection base to shift, the protection base and the power sheath are driven to pop out, and the injection needle is covered in the protection base and the power sheath after the pop out;
step four: the protection base is contacted with the position to be injected, the injection needle cylinder is pressed, so that the injection needle extends out and pierces the position to be injected, and the injection push rod of the injection needle cylinder is pushed to complete injection of the injection liquid;
step five: the injection needle is pulled out, the protection base is separated from contact with the position to be injected, the pushing spring pushes the protection base and the power sheath to pop out, and after the pushing, the locking is realized by the sliding fit of the protection base, the power sheath and the needle seat sheath, so that the injection needle is prevented from being used secondarily.
As a further scheme of the invention: in the third step, after the triggering spring plate is pressed down, the protection base and the power sheath pop out the in-process, the needle seat protruding block on the power sheath slides downwards along the vertical groove on the needle seat sheath, the sheath protruding block on the protection base moves downwards along the first vertical section of the sheath sliding groove on the power sheath, and when the needle seat protruding block slides to the bottom of the vertical groove, the sheath protruding block slides to the bottom of the first vertical section, so that the protection base and the power sheath pop out completely and cover the injection needle inside.
As a further scheme of the invention: in the fourth step, when the injection needle cylinder is pressed, the pushing movement process of the injection needle is divided into two sections, in the first section, a needle seat lug on the power sheath slides upwards along an inclined groove on the needle seat sheath, so that the power sheath rotates, the sheath lug moves along a first horizontal section, when the needle seat lug moves to the highest position of the inclined groove, the sheath lug moves to the intersection point of the first horizontal section movement and a second vertical section, then the second section movement is performed, namely the needle seat lug is fixed at the highest position of the inclined groove, the sheath lug moves upwards along the second vertical section, and when the sheath lug moves to the intersection point of the second vertical section and the second horizontal section, the injection needle extends completely.
As a further scheme of the invention: in the fifth step, when the injection needle is pulled out, the protection base is gradually separated from contact with the position to be injected, under the pushing action of the pushing spring, the needle seat lug slides downwards from the highest position of the inclined groove, so that the power sheath rotates, the sheath lug moves horizontally along the second horizontal section, when the needle seat lug moves to the positioning section at the bottom of the inclined groove, the sheath lug moves into the third vertical section from the second horizontal section and falls into the locking section along the third vertical section under the action of the pushing spring, and the needle seat lug and the sheath lug are limited through the positioning section and the locking section respectively, so that the locking of the injection needle is realized.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, by arranging the structures such as the pop-up power sheath and the protection base, the needle is protected, the damage of the needle when not in use is avoided, and meanwhile, the safety of the needle in the transportation and transfer process is improved; compared with the existing autonomous injection needle, the injection needle can be used for extracting and blending injection on site, so that the flexibility of injection use is improved;
according to the needle seat sliding groove and the needle seat sliding groove with specific shapes, the needle seat sheath and the power sheath can cooperatively move in the pushing, flicking and pressing injection processes, so that multiple sections of different pushing strokes are generated, namely, injection needles are pushed out of different lengths, the requirements on different injection depths are met, and after one injection is completed, locking of the injection needles is realized; the needle head has the advantages of combining safety protection and autonomous injection, along with simple self-structure, suitability for standard syringes of various universal joints or various injection devices, and good universality; the injection can be directly extracted after the outer sheath is opened, the injection can be independently injected after the trigger is shot, the injection is locked after the completion of the injection, the secondary use cannot be realized, and meanwhile, the waste needle is automatically protected with the shell, so that the risks caused by the secondary use and the exposure of the needle are reduced.
According to the needle seat protruding block limiting device, the middle part of the inclined groove is provided with the plurality of adjusting track grooves and is connected with the reversing elastic piece, the protruding blocks of the needle seat are limited at different height positions, and therefore the extending length of the injection needle is enabled to have more flexible adjusting capacity, and the injection device does not need to be injected by a professional person, so that the use requirements of different injection depths can be met.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a cross-sectional view of a cross-section of the push spring of the present invention in the unpopulated configuration;
FIG. 3 is a structural cross-sectional view of the push spring of the present invention in a fully ejected state;
FIG. 4 is a schematic perspective view of the outer sheath removed according to the present invention;
fig. 5 is a schematic view of the structure of the needle seat chute and the sheath chute of the present invention;
fig. 6 is a perspective view of the hub sheath of the present invention;
FIG. 7 is a perspective view of a power jacket of the present invention;
fig. 8 is a schematic view of the structure of the needle seat chute of the present invention;
FIG. 9 is a schematic view of a jacket chute according to the present invention;
fig. 10 is a schematic structural view of a chute of a second needle stand according to the embodiment of the present invention;
FIG. 11 is a flow chart of the basic steps of the present invention in use.
In the figure: 1. an injection cylinder; 2. an injection push rod; 3. a needle stand; 4. an injection needle; 5. a needle seat sheath; 6. a jacket is arranged; 7. a power jacket; 8. the base is protected; 9. an outer sheath; 10. pushing a spring; 11. triggering a spring plate; 12. a card interface; 14. a sheath bump; 15. a sheath chute; 16. needle seat sliding groove; 17. a needle seat lug; 1501. a first vertical section; 1502. a first horizontal segment; 1503. a second vertical section; 1504. a second horizontal segment; 1505. a third vertical section; 1506. a locking section; 1601. a vertical groove; 1602. an inclined groove; 1603. a positioning section; 1604. adjusting the track groove; 1605. a reversing spring plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one; referring to fig. 1-9, in an embodiment of the present invention, an autonomous injection universal injection needle with safety protection includes an upper sheath 6, wherein one end of the upper sheath 6 is connected with an outer sheath 9 in a clamping manner; the inner wall of the upper sheath 6 is fixedly connected with a needle seat sheath 5, the inside of the needle seat sheath 5 is fixedly connected with a needle seat 3, the middle part of one side of the needle seat 3 is fixedly connected with an injection needle 4, the injection needle 4 comprises a needle point, a needle stem and a needle bolt, and the needle bolt part is fixedly connected with the middle part of the needle seat 3; the other side of the needle seat 3 is provided with a connector for being in butt joint with the external injection needle cylinder 1, in the embodiment, a structure corresponding to a standard luer connector is adopted, and other conventional connector structures can be adopted, so that the needle seat is convenient to be in butt joint with different types of injection needle cylinders 1; the outer wall of the needle seat sheath 5 is connected with a power sheath 7 in a sliding way, the outer wall of the power sheath 7 is connected with a protection base 8 in a sliding way, the middle part of the protection base 8 is provided with a guide pin hole which is arranged corresponding to the injection needle 4, and the injection needle 4 is guided in the injection process by the guide pin hole, so that the position of the guide pin hole is centered and kept stable; a muscle extrusion groove which is concavely arranged is formed on one side of the protection base 8 far away from the power sheath 7;
a pushing spring 10 is fixedly connected between one side of the needle seat 3 and the protection base 8, and the pushing spring 10 is arranged to provide power for automatic spring opening of the device and is matched with pressing operation to realize displacement of all parts;
the two sides of the outer wall of the protection base 8 are fixedly connected with triggering spring plates 11, the two sides of the upper sheath 6 are provided with clamping interfaces 12, and the triggering spring plates 11 are in clamping connection with the clamping interfaces 12, so that the limit fixing of the protection base 8 is realized, and the springs and the components can be fixed and limited in an undeployed state;
the outer wall of the needle seat sheath 5 is provided with a needle seat sliding groove 16, the inner wall of the power sheath 7 is fixedly connected with a needle seat convex block 17, and the needle seat convex block 17 is arranged in the needle seat sliding groove 16 in a sliding way; a sheath sliding groove 15 is formed in the outer wall of the power sheath 7, a sheath lug 14 is fixedly connected to the inner wall of the protection base 8, and the sheath lug 14 is arranged in the sheath sliding groove 15 in a sliding manner;
the needle seat sliding groove 16 comprises a vertical groove 1601 which is vertically arranged, one side of the vertical groove 1601 is provided with an inclined groove 1602, the inclined groove 1602 is arranged in an inverted V shape, one end of the bottom of the inclined groove 1602 is communicated with the bottom of one side of the vertical groove 1601, and the other end of the bottom of the inclined groove 1602 transversely extends to form a positioning section 1603;
the needle seat sliding groove 16 comprises three vertical sections, the three vertical sections are arranged in parallel, a horizontal section is arranged between any two adjacent vertical sections, the bottoms of the first vertical section 1501 and the second vertical section 1503 are communicated through a first horizontal section 1502, and the tops of the second vertical section 1503 and the third vertical section 1505 are communicated through a second horizontal section 1504; namely, the sheath chute 15 is a continuous bending groove formed by sequentially connecting a first vertical section 1501, a first horizontal section 1502, a second vertical section 1503, a second horizontal section 1504 and a third vertical section 1505, wherein the bottom of the third vertical section 1505 is provided with a locking section 1506 in a downward inclined extending manner; by arranging the needle seat sliding groove 16 and the needle seat sliding groove 16 with specific shapes, the needle seat sheath 5 and the power sheath 7 can cooperatively move in the pushing, flicking and pressing injection processes to generate a plurality of sections of different pushing strokes, namely, the injection needle 4 is pushed out of different lengths to meet the requirements of different injection depths, and after one injection is completed, the needle seat convex block 17 and the sheath convex block 14 are respectively limited by the positioning section 1603 and the locking section 1506, so that the locking of the injection needle 4 is realized, and the secondary use of the injection needle 4 is prevented; the needle is installed in a universal screw mode, is suitable for various standard injectors, is wide in application range, comprises pre-filling and sealing, transfusion, blood sampling and other occasions, is suitable for injection of emergency medicines in various distress occasions such as field exploration or army, can be independently and directly operated without professional personnel, and achieves rapid and safe injection.
Embodiment two; referring to fig. 10, in the present embodiment, a plurality of inclined adjustment track grooves 1604 are formed in the middle of the inclined groove 1602, the height of one end of the adjustment track groove 1604 away from the vertical groove 1601 is lower, the connection between the higher end of the adjustment track groove 1604 and the inclined groove 1602 is fixedly connected with a reversing spring 1605, the middle of the inclined groove 1602 is provided with a plurality of adjustment track grooves 1604 and connected with the reversing spring 1605, the needle seat protrusion 17 is limited at different height positions, so that the extending length of the injection needle 4 has more flexible adjustment capability, the use requirements of different injection depths are met, after the reversing spring 1605 is limited and injection of corresponding depth is completed, the protrusion 17 is pushed to pass through the spring, and the needle seat 1603 is slid down to the inclined groove 1602 by the adjustment track groove 1604 where the reversing spring 1605 is located.
Referring to FIG. 11, the basic step flow in use of the present application is shown by a-f in FIG. 11; a is the state after the application is connected with the external injection needle cylinder 1, namely the initial state when the application is taken and used, and then the outer sheath 9 is taken down, namely b; and then extracting the injection, namely c, pressing the trigger spring piece 11 after the extraction is finished, namely d, pressing the trigger spring piece, namely e, pressing the trigger spring piece, contacting the protection base 8 with the skin of the human body to be injected, and pressing the injection needle cylinder 1, so that the injection needle 4 penetrates the skin and then is injected, namely f.
The specific use mode and working principle of the injection needle are as follows: the needle seat sheath 5 is fixedly connected with the external syringe 1 in a way that one side of the needle seat 3 is fixedly connected with the nipple position of the syringe 1 with standard luer threads; removing the outer sheath 9 to expose the injection needle 4, inserting the injection needle 4 into the medicine bottle, and extracting the injection;
after extraction is completed, the triggering elastic sheet 11 is pressed down, the pushing spring 10 pushes the protection base 8 to shift, the protection base 8 and the power sheath 7 are driven to pop up, in the pop-up process, the needle seat protruding block 17 on the power sheath 7 slides downwards along the vertical groove 1601 on the needle seat sheath 5, the sheath protruding block 14 on the protection base 8 moves downwards along the first vertical section 1501 of the sheath sliding groove 15 on the power sheath 7, when the needle seat protruding block 17 slides to the bottom of the vertical groove 1601, the sheath protruding block 14 slides to the bottom of the first vertical section 1501, the protection base 8 and the power sheath 7 are driven to pop up completely, and the injection needle 4 is covered in the protection base 8 and the power sheath 7 after pop-up;
during injection, the protection base 8 is contacted with a position to be injected, the injection needle cylinder 1 is pressed, when the injection needle cylinder 1 is pressed and pushed, the pushing movement process of the injection needle 4 is divided into two sections, in the first section, the needle seat lug 17 on the power sheath 7 slides upwards along the inclined groove 1602 on the needle seat sheath 5, the power sheath 7 rotates, the sheath lug 14 moves along the first horizontal section 1502, when the needle seat lug 17 moves to the highest position of the inclined groove 1602, the sheath lug 14 moves to the intersection point of the movement of the first horizontal section 1502 and the second vertical section 1503, then the second section movement is carried out, namely the needle seat lug 17 does not move at the highest position of the inclined groove 1602, the sheath lug 14 moves upwards along the second vertical section 1503, and when the sheath lug 14 moves to the intersection point of the second vertical section 1503 and the second horizontal section 1504, the injection needle 4 extends completely, so that the injection needle 4 extends out and pierces the position to be injected, and the injection push rod 2 of the injection needle cylinder 1 is pushed, and injection is completed; after injection is finished, the injection needle 4 is pulled out, the protection base 8 is gradually separated from contact with the position to be injected, under the pushing action of the pushing spring, the needle seat lug 17 slides downwards from the highest position of the inclined groove 1602, the power sheath 7 rotates, the sheath lug 14 moves horizontally along the second horizontal section 1504, when the needle seat lug 17 moves to the positioning section 1603 at the bottom of the inclined groove 1602, the sheath lug 14 moves into the third vertical section 1505 from the second horizontal section 1504 and falls into the locking section 1506 along the third vertical section 1505 under the action of the pushing spring 10, and the needle seat lug 17 and the sheath lug 14 are limited through the positioning section 1603 and the locking section 1506 respectively, so that locking of the injection needle 4 is realized, and the injection needle 4 is prevented from being used for a second time.
The present invention is not limited to the above embodiments, but is capable of modification and variation in all aspects, including those of ordinary skill in the art, without departing from the spirit and scope of the present invention.
Claims (7)
1. An autonomous injection universal injection needle with safety protection, which is characterized by comprising an upper sheath (6); the inner wall of the upper sheath (6) is fixedly connected with a needle seat sheath (5), the inside of the needle seat sheath (5) is fixedly connected with a needle seat (3), and the middle part of one side of the needle seat (3) is fixedly connected with an injection needle (4); the outer wall of the needle seat sheath (5) is connected with a power sheath (7) in a sliding way, and the outer wall of the power sheath (7) is connected with a protection base (8) in a sliding way;
one side of the needle seat (3) is fixedly connected with a pushing spring (10), two sides of the outer wall of the protection base (8) are fixedly connected with a triggering spring piece (11), two sides of the upper sheath (6) are provided with a clamping interface (12), and the triggering spring piece (11) is in clamping connection with the clamping interface (12);
a needle seat sliding groove (16) is formed in the outer wall of the needle seat sheath (5), a needle seat protruding block (17) is fixedly connected to the inner wall of the power sheath (7), and the needle seat protruding block (17) is arranged in the needle seat sliding groove (16) in a sliding mode; a sheath sliding groove (15) is formed in the outer wall of the power sheath (7), a sheath protruding block (14) is fixedly connected to the inner wall of the protection base (8), and the sheath protruding block (14) is arranged in the sheath sliding groove (15) in a sliding mode;
the needle seat sliding groove (16) comprises a vertical groove (1601) which is vertically arranged, an inclined groove (1602) is formed in one side of the vertical groove (1601), the inclined groove (1602) is in an inverted V shape, one end of the bottom of the inclined groove (1602) is communicated with one side bottom of the vertical groove (1601), and a positioning section (1603) is arranged at the other end of the bottom of the inclined groove (1602);
the sheath chute (15) comprises a first vertical section (1501), a first horizontal section (1502), a second vertical section (1503), a second horizontal section (1504) and a third vertical section (1505) which are communicated in sequence, and a locking section (1506) is arranged at the bottom of the third vertical section (1505).
2. The autonomous injection universal injection needle with the safety protection according to claim 1, wherein a plurality of inclined adjusting track grooves (1604) are formed in the middle of the inclined grooves (1602), and reversing spring plates (1605) are fixedly connected to the communicating positions of the adjusting track grooves (1604) and the inclined grooves (1602).
3. The autonomous injection universal injection needle with safety protection according to claim 1, wherein a guide pin hole corresponding to the injection needle (4) is formed in the middle of the protection base (8).
4. A self-contained injection needle with safety protection according to any one of claims 1-3, characterized in that the method of use of the needle comprises the following steps:
step one: the needle seat sheath (5) is fixedly connected with the external injection needle cylinder (1);
step two: removing the outer sheath (9) to expose the injection needle (4), inserting the injection needle (4) into the medicament bottle, and extracting injection;
step three: after extraction is completed, the triggering spring piece (11) is pressed down, the pushing spring (10) pushes the protection base (8) to shift, the protection base (8) and the power sheath (7) are driven to pop out, and the injection needle (4) is coated in the protection base (8) and the power sheath (7) after the ejection;
step four: the protection base (8) is contacted with the position to be injected, the injection needle cylinder (1) is pressed, the injection needle (4) stretches out and pierces the position to be injected, and the injection push rod (2) of the injection needle cylinder (1) is pushed to complete injection of injection liquid;
step five: the injection needle (4) is pulled out, the pushing spring (10) pushes the protection base (8) and the power sheath (7) to pop out, and after the pushing out, the locking is realized by the sliding fit of the protection base (8), the power sheath (7) and the needle seat sheath (5), so that the injection needle (4) is prevented from being used for the second time.
5. The autonomous injection universal injection needle with safety protection according to claim 4, wherein in the third step, after the trigger spring (11) is pressed down, the needle seat protrusion (17) on the power sheath (7) slides downwards along the vertical groove (1601) on the needle seat sheath (5) in the process of ejecting the protection base (8) and the power sheath (7), the sheath protrusion (14) on the protection base (8) moves downwards along the first vertical section (1501) of the sheath sliding groove (15) on the power sheath (7), and when the needle seat protrusion (17) slides to the bottom of the vertical groove (1601), the sheath protrusion (14) slides to the bottom of the first vertical section (1501), so that the protection base (8) and the power sheath (7) are completely ejected and the injection needle (4) is covered inside.
6. The autonomous injection universal injection needle with safety protection according to claim 4, wherein in the fourth step, when the injection needle cylinder (1) is pressed, the needle seat protrusion (17) on the power sheath (7) slides upwards along the inclined groove (1602) on the needle seat sheath (5), so that the power sheath (7) rotates, the sheath protrusion (14) moves along the first horizontal section (1502), when the needle seat protrusion (17) moves to the highest position of the inclined groove (1602), the sheath protrusion (14) moves to the intersection point of the movement of the first horizontal section (1502) and the second vertical section (1503), and then the needle seat protrusion (17) does not move at the highest position of the inclined groove (1602), the sheath protrusion (14) moves upwards along the second vertical section (1503), and when the sheath protrusion (14) moves to the intersection point of the second vertical section (1503) and the second horizontal section (1504), the injection needle (4) is completely extended.
7. The autonomous injection universal injection needle with safety protection according to claim 4, wherein in the fifth step, when the injection needle (4) is pulled out, under the pushing action of the pushing spring, the needle seat lug (17) slides downwards from the highest position of the inclined groove (1602), so that the power sheath (7) rotates, the sheath lug (14) moves horizontally along the second horizontal section (1504), when the needle seat lug (17) moves to the positioning section (1603) at the bottom of the inclined groove (1602), the sheath lug (14) moves into the third vertical section (1505) from the second horizontal section (1504), and falls into the locking section (1506) along the third vertical section (1505) under the action of the pushing spring (10), and the needle seat lug (17) and the sheath lug (14) are respectively limited by the positioning section (1603) and the locking section (1506), so as to realize locking of the injection needle (4).
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| CN202311252370.XA CN117100949B (en) | 2023-09-26 | 2023-09-26 | Take safety protection formula to independently inject general syringe needle |
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| CN202311252370.XA CN117100949B (en) | 2023-09-26 | 2023-09-26 | Take safety protection formula to independently inject general syringe needle |
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| CN117100949B true CN117100949B (en) | 2024-02-23 |
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| CN117100949A (en) | 2023-11-24 |
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