Safe syringe capable of preventing needle stick injury
By setting a protective component and a support limit component on the syringe, the needle can automatically retract when not in use, solving the problem of needle stick injuries caused by accidental contact of the syringe, and ensuring that the needle is stably extended during use to avoid sticking injuries and contamination.
Patent Information
- Application Number
- CN202510731667.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-03
- Publication Date
- 2025-09-19
AI Technical Summary
The problem of needle stick injuries caused by accidental contact during use of existing syringes has not been effectively solved.
A syringe with a protection component and a support and limit component is designed. Through the cooperation of a sliding sleeve and a rotating ring, the needle automatically retracts and is surrounded by a protection baffle when not in use, and the protection is manually released when in use.
It effectively avoids the risk of needle puncture to medical staff when not in use, prevents needle contamination, and ensures that the needle can be stably extended when in use.
Smart Images
Figure CN120661786A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of syringes, in particular to a safety syringe capable of preventing needle punctures. Background Art
[0002] The syringe used in medical injections is an indispensable and important tool in the medical field. The syringe is usually made of glass or plastic, cylindrical in shape, hollow inside, and used to hold liquid medicine. It is widely used. The needle connected to the front end of the syringe is usually made of stainless steel, very sharp, and can easily penetrate skin and muscle tissue.
[0003] The safety hazard in medical injections is needle stick injuries caused by accidental touch. By setting an automatic rebound rotary push structure to achieve automatic retraction of the needle, and cooperating with a physical snap, the needle can be automatically retracted when not in use. Only when in use, the push structure is fixed by a physical snap to ensure that the needle is extended to avoid puncture injuries. In this way, medical patients can avoid puncture injuries. A safety syringe with needle stick protection is proposed. Summary of the Invention
[0004] In order to solve the safety hazard of needle stick injuries caused by accidental touch in medical injections raised in the above background technology, the present invention provides a safety syringe with anti-needle stick injury function.
[0005] To achieve the above object, the present invention provides the following technical solution: a safety syringe with needlestick protection, comprising a syringe body, an injection end of which is provided with a needle, and further comprising: A protective component, which is arranged outside the syringe body and is used to shield and protect the tip of the needle; A support and limiting assembly is installed in the middle of the syringe body and is used to limit and push the protection assembly; The protection assembly includes a sliding sleeve sleeved on the outside of the syringe body, a protective baffle is fixedly connected to the side of the sliding sleeve close to the needle, and a pair of limiting sliding grooves and a pair of adjusting sliding grooves are opened in the middle of the sliding sleeve; The support and limiting assembly includes a fixed ring sleeved on the middle part of the needle head, and one side of the fixed ring is rotatably connected to a rotating ring.
[0006] Preferably, a pair of limiting fixing blocks are fixedly connected to the inner side of the fixing ring, and the limiting fixing blocks are symmetrically distributed on the inner side of the fixing ring.
[0007] Preferably, the limiting fixing block is located in the middle of the syringe body and is fixedly connected to the syringe body, and a pair of the limiting fixing blocks are slidably connected inside a pair of the limiting sliding grooves respectively.
[0008] Preferably, the rotating ring is fixedly connected to a pair of limiting protrusions, the limiting protrusions are slidably connected to the fixed ring, and an elastic member is fixedly connected between the limiting protrusions and the fixed ring.
[0009] Preferably, the outer side of the fixed ring is slidably connected to a limit block, the outer side of the rotating ring is provided with an opening corresponding to the limit block, and the rotating ring is provided with a pair of extrusion blocks respectively slidably connected to the inside of a pair of positioning slots.
[0010] Preferably, when the rotating ring rotates, it will drive the extrusion block inside to move, so that the extrusion block moves along the adjustment slot to squeeze the sliding sleeve to move, so that the sliding sleeve moves toward the needle head on the side away from it. When the opening on the rotating ring moves to the limit block, the limit block is pushed to move, so that the limit block is engaged and locked to the rotating ring.
[0011] Preferably, the sliding sleeve and the protective baffle are located between the fixing ring and the syringe body, the limiting groove is a straight groove, the adjusting groove is curved, and the protective baffle is distributed in a ring shape at one end of the sliding sleeve.
[0012] Preferably, the end of the protective baffle close to the needle is fixedly connected to a support head, an elastic band is sleeved on the outside of the protective baffle, and an inner recessed groove is provided on the inner side of the end of the protective baffle close to the sliding sleeve.
[0013] Preferably, when the protective baffle surrounds the needle inside, the elastic band on the outside of the protective baffle squeezes the protective baffle to shrink, causing the protective baffle to bend and shrink inward from the sunken groove, so that the support heads contact and support each other, surrounding the needle in a ring while not contacting the tip of the needle.
[0014] Preferably, when the limit block moves out of the opening of the rotating ring, the rotating ring loses its lock, causing the rotating ring to rotate and reset, and the extrusion block on the inner side of the rotating ring squeezes the sliding sleeve to move, thereby pushing the sliding sleeve toward the needle head, so that the protective baffle surrounds the needle head.
[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention cooperates with structures such as a protective baffle and an elastic band, so that when the needle is not in use, the protective baffle surrounds the needle. When the protective baffle surrounds the needle, the elastic band on the outside of the protective baffle squeezes the protective baffle and retracts it, causing the protective baffle to bend inward from the inner groove and retract, so that the supporting heads contact each other and support the needle, thereby surrounding the needle in a circular manner without contacting the needle tip, thereby preventing the needle from pricking medical personnel and preventing contamination. The present invention cooperates with structures such as a protection component and a support and limiting component, thereby facilitating the automatic extension of the protection baffle to surround and protect the needle when not in use. The limiting block is moved out of the opening of the rotating ring to unlock the rotating ring, and the unlocked rotating ring is pushed by the elastic member to rotate and reset. When the rotating ring rotates and resets, the squeezing block on the inner side of the rotating ring squeezes the sliding sleeve to move, causing the sliding sleeve to move toward the needle. When the protection baffle moves, the inner side of the protection baffle loses the support of the syringe body, and the protection baffle surrounds the needle inside, thereby realizing the automatic pop-up of the protection baffle, and then the protection baffle protects the needle. The present invention cooperates with structures such as a rotating ring and a limiting block, thereby facilitating the fixing of the protective baffle during use so as to use the needle. By manually rotating the rotating ring, the extrusion block on the inner side of the rotating ring squeezes the sliding sleeve toward the side away from the needle, thereby pulling the protective baffle to move, causing the syringe body to push the protective baffle open and release the protection of the needle. Then, the limiting block is used to fix the rotating ring to fix the protective baffle so as to use the needle. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a cross-sectional view of the middle part of the present invention as a whole; Figure 3 It is a schematic cross-sectional view of the middle portion of the support and limit assembly of the present invention; Figure 4 This is a partial cross-sectional view of the support and limit assembly of the present invention; Figure 5 Schematic diagram of the connection between the support and limit assembly and the protection assembly of the present invention Figure 1 ; Figure 6 Schematic diagram of the connection between the support and limit assembly and the protection assembly of the present invention Figure 2 ; Figure 7 This is a structural detail diagram of the protective baffle of the present invention.
[0017] In the figure: 1. Syringe body; 2. Needle; 3. Support and limit assembly; 301. Fixed ring; 302. Rotating ring; 303. Limiting fixed block; 304. Elastic member; 305. Limiting block; 306. Extrusion block; 4. Protective assembly; 401. Sliding sleeve; 402. Protective baffle; 403. Limiting slide; 404. Adjusting slide; 405. Support head; 406. Elastic band; 407. Recessed groove. DETAILED DESCRIPTION
[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0019] like Figures 1 to 7 As shown, the present invention provides a safety syringe with needle stick protection, comprising a syringe body 1, a needle 2 being mounted on the injection end of the syringe body 1, and further comprising: A protective component 4 is provided on the outside of the syringe body 1 and is used to shield and protect the tip of the needle 2; A support and limiting assembly 3 is installed in the middle of the syringe body 1 and is used to limit and push the protection assembly 4; The protective assembly 4 includes a sliding sleeve 401 that is sleeved on the outside of the syringe body 1. A protective baffle 402 is fixedly connected to the side of the sliding sleeve 401 close to the needle 2. A pair of limiting grooves 403 and a pair of adjusting grooves 404 are opened in the middle of the sliding sleeve 401. The support and limiting assembly 3 includes a fixed ring 301 sleeved on the middle part of the needle 2, and one side of the fixed ring 301 is rotatably connected to a rotating ring 302.
[0020] The above solution is adopted: by moving the limit block 305 out of the opening of the rotating ring 302, the rotating ring 302 is unlocked. At this time, the medical staff can hold the fixed ring 301 to release the compressed elastic member 304 and push the unlocked rotating ring 302 to rotate and reset. When the rotating ring 302 rotates and resets, the squeezing block 306 inside the rotating ring 302 squeezes the sliding sleeve 401 to move, causing the sliding sleeve 401 to move toward the needle 2. At the same time as the protective baffle 402 moves, the protective baffle The inner side of 402 loses the support of the syringe body 1, and the protective baffle 402 will surround the needle 2 inside. When the inner recessed groove 407 of the protective baffle 402 is offset from the syringe body 1, the elastic band 406 on the outer side of the protective baffle 402 will squeeze the protective baffle 402 and shrink it, causing the protective baffle 402 to bend inward from the recessed groove 407, so that the support heads 405 at the ends of the protective baffle 402 contact each other to support each other, thus surrounding the needle 2 in a ring inside the protective baffle 402 without contacting the tip of the needle 2. By manually rotating the rotating ring 302, the squeezing block 306 inside the rotating ring 302 squeezes the sliding sleeve 401 to move toward the side away from the needle 2, thereby pulling the protective baffle 402 to move, causing the syringe body 1 to push open the protective baffle 402 and release the protection of the needle 2, so that the needle 2 can be used.
[0021] like Figures 3 to 5 As shown, a pair of limiting fixing blocks 303 are fixedly connected to the inner side of the fixing ring 301. The limiting fixing blocks 303 are symmetrically distributed on the inner side of the fixing ring 301. The limiting fixing blocks 303 are located in the middle of the syringe body 1 and are fixedly connected to the syringe body 1. The pair of limiting fixing blocks 303 are respectively slidably connected to the inside of the limiting slide groove 403.
[0022] The above solution is adopted: by setting a support limit component 3, it is convenient to lock the protection component 4 to use the needle 2, and the limit fixing block 303 set inside the fixing ring 301 fixes the fixing ring 301 to the syringe body 1. At the same time, the limit fixing block 303 can limit and guide the sliding sleeve 401 through the limiting groove 403, so that the sliding sleeve 401 will not rotate outside the syringe body 1, and can only slide back and forth along the syringe body 1.
[0023] like Figures 3 to 5 As shown, the rotating ring 302 is fixedly connected to a pair of limiting protrusions, which are slidably connected to the fixed ring 301 and an elastic member 304 is fixedly connected between the limiting protrusion and the fixed ring 301. A limiting block 305 is slidably connected to the outer side of the fixed ring 301, and an opening corresponding to the limiting block 305 is opened on the outer side of the rotating ring 302. The rotating ring 302 is provided with a pair of extrusion blocks 306 which are slidably connected to the inside of the adjustment slot 404.
[0024] The above solution is adopted: by providing the rotating ring 302 and the squeezing block 306, it is easy to push the sliding sleeve 401 to move, and the squeezing block 306 moves and squeezes the sliding sleeve 401 inside the adjustment slot 404, so that the sliding sleeve 401 slides along the syringe body 1, and the elastic member 304 provided between the rotating ring 302 and the fixed ring 301 can be compressed as the rotating ring 302 rotates. When the sliding sleeve 401 pulls the protective baffle 402 to release the encirclement of the needle 2, the elastic member 304 will be compressed. After contacting the locking of the rotating ring 302, the compressed elastic member 304 will push the rotating ring 302 to rotate and reset, so that the rotating ring 302 pressurizes the sliding sleeve 401 to move, thereby causing the protective baffle 402 to encircle the needle 2. The setting of the limit block 305 is used to lock the rotating ring 302 to facilitate the use of the needle 2.
[0025] like Figures 2 to 5 As shown, when the rotating ring 302 rotates, it drives the inner extrusion block 306 to move, so that the extrusion block 306 moves along the adjustment slot 404 to squeeze the sliding sleeve 401, so that the sliding sleeve 401 moves toward the side away from the needle 2. When the opening on the rotating ring 302 moves to the limit block 305, the limit block 305 is pushed to move, so that the limit block 305 is engaged and locked on the rotating ring 302.
[0026] The above solution is adopted: when the rotating ring 302 rotates, it will drive the inner extrusion block 306 to move, so that the extrusion block 306 moves along the adjustment slot 404 to squeeze the sliding sleeve 401 to move, so that the sliding sleeve 401 moves toward the needle 2 on the side away from it. When the opening on the rotating ring 302 moves to the limit block 305, the limit block 305 is pushed to move, so that the limit block 305 engages and locks the rotating ring 302.
[0027] like Figures 4 to 7 As shown, the sliding sleeve 401 and the protective baffle 402 are located between the fixed ring 301 and the syringe body 1, the limiting slide groove 403 is a straight groove, the adjusting slide groove 404 is curved, and the protective baffle 402 is distributed in a ring shape at one end of the sliding sleeve 401. The end of the protective baffle 402 close to the needle 2 is fixedly connected to the support head 405, an elastic band 406 is provided on the outside of the protective baffle 402, and an inner groove 407 is provided on the inner side of the end of the protective baffle 402 close to the sliding sleeve 401.
[0028] The above solution is adopted: by setting a sliding sleeve 401, it is convenient to control the movement of the protective baffle 402. The limiting slide groove 403 and the adjusting slide groove 404 opened on the outside of the sliding sleeve 401 can keep the sliding sleeve 401 stable while being able to slide back and forth along the syringe body 1. The setting of the elastic band 406 and the sunken groove 407 can pressurize the protective baffle 402 through the elastic band 406, so that the protective baffle 402 is completed from the sunken groove 407, thereby surrounding the needle 2. The setting of the support head 405 makes the protection baffle 402 more stable in contact, avoiding deviation caused by accidental touch, causing the tip of the needle 2 to leak out and injure people.
[0029] like Figures 4 to 7 As shown, when the protective baffle 402 surrounds the needle 2 inside, the elastic band 406 on the outside of the protective baffle 402 squeezes the protective baffle 402 to bend and shrink inward from the inner groove 407, so that the support heads 405 contact and support each other, surrounding the needle 2 in a ring while not contacting the tip of the needle 2.
[0030] Adopting the above solution: when the protective baffle 402 surrounds the needle 2 inside, the elastic band 406 on the outside of the protective baffle 402 squeezes the protective baffle 402 to bend and retract inward from the sunken groove 407, so that the support heads 405 support each other, surround the needle 2 in a ring while not contacting the tip of the needle 2 to avoid contaminating the tip of the needle 2.
[0031] like Figures 2 to 7As shown, when the limit block 305 moves out of the opening of the rotating ring 302, the rotating ring 302 loses its lock, causing the rotating ring 302 to rotate and reset. The squeezing block 306 inside the rotating ring 302 squeezes the sliding sleeve 401 to move, thereby pushing the sliding sleeve 401 toward the needle 2, so that the protective baffle 402 surrounds the needle 2.
[0032] According to the above solution, when the limit block 305 moves out of the opening of the rotating ring 302, the rotating ring 302 loses its lock, and the compressed elastic member 304 is released to push the rotating ring 302 to rotate and reset. The squeezing block 306 inside the rotating ring 302 squeezes the sliding sleeve 401 to move, thereby pushing the sliding sleeve 401 toward the needle 2, so that the protective baffle 402 surrounds the needle 2.
[0033] The working principle and use process of the present invention are as follows: during use, when there is no need to inject or draw medicine, in order to prevent the tip of the needle 2 from stabbing the medical staff, it is necessary to move the limit block 305 out of the opening of the rotating ring 302 to unlock the rotating ring 302. At this time, the medical staff can hold the fixed ring 301 to release the compressed elastic member 304 and push the unlocked rotating ring 302 to rotate and reset. When the rotating ring 302 rotates and resets, the squeezing block 306 inside the rotating ring 302 squeezes the sliding sleeve 401 to move, so that the sliding sleeve 401 moves toward the needle 2. When the protective baffle 402 moves, the inner side of the protective baffle 402 loses the support of the syringe body 1, and the protective baffle 402 will surround the needle 2 inside. When the inner recessed groove 407 on the inner side of the protective baffle 402 is offset from the syringe body 1, the elastic band 406 on the outer side of the protective baffle 402 will squeeze the protective baffle 402 and shrink it, causing the protective baffle 402 to bend inward from the inner recessed groove 407 and shrink it, so that the support heads 405 at the ends of the protective baffle 402 contact and support each other, thus surrounding the needle 2 in a ring inside the protective baffle 402 without contacting the tip of the needle 2. When it is needed to be used, the rotating ring 302 needs to be manually rotated so that the squeezing block 306 inside the rotating ring 302 squeezes the sliding sleeve 401 to move toward the side away from the needle 2, thereby pulling the protective baffle 402 to move, so that the syringe body 1 pushes the protective baffle 402 open and releases the protection of the needle 2.
[0034] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.
[0035] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.
Claims
1. A safety syringe with needle stick protection, comprising a syringe body (1), wherein the injection end of the syringe body (1) is provided with a needle (2), characterized in that: Also includes: A protective component (4), which is arranged outside the syringe body (1) and is used to shield and protect the tip of the needle (2); A support and limiting assembly (3) is mounted in the middle of the syringe body (1) and is used to limit and push the protection assembly (4); The protection assembly (4) comprises a sliding sleeve (401) sleeved on the outside of the syringe body (1), a protection baffle (402) is fixedly connected to a side of the sliding sleeve (401) close to the needle (2), and a pair of limiting sliding grooves (403) and a pair of adjusting sliding grooves (404) are formed in the middle of the sliding sleeve (401); The support and limiting assembly (3) comprises a fixed ring (301) sleeved on the middle part of the needle head (2), and one side of the fixed ring (301) is rotatably connected to a rotating ring (302).
2. The needle-stick-proof safety syringe according to claim 1, characterized in that: A pair of position-limiting fixing blocks (303) are fixedly connected to the inner side of the fixing ring (301), and the position-limiting fixing blocks (303) are symmetrically distributed on the inner side of the fixing ring (301).
3. The needle-stick-proof safety syringe according to claim 2, characterized in that: The limiting fixing block (303) is located in the middle of the syringe body (1) and is fixedly connected to the syringe body (1). A pair of the limiting fixing blocks (303) are respectively slidably connected inside a pair of the limiting sliding grooves (403).
4. The needle-stick-proof safety syringe according to claim 2, characterized in that: The rotating ring (302) is fixedly connected to a pair of limiting protrusions, the limiting protrusions are slidably connected to the fixed ring (301), and an elastic member (304) is fixedly connected between the limiting protrusions and the fixed ring (301).
5. The needle-stick-proof safety syringe according to claim 2, characterized in that: The outer side of the fixed ring (301) is slidably connected to a limit block (305), the outer side of the rotating ring (302) is provided with an opening corresponding to the limit block (305), and the rotating ring (302) is provided with a pair of extrusion blocks (306) respectively slidably connected to the inside of a pair of position adjustment slots (404).
6. The needle-stick-proof safety syringe according to claim 5, characterized in that: When the rotating ring (302) rotates, the extrusion block (306) inside is driven to move, so that the extrusion block (306) moves along the adjustment slot (404) to squeeze the sliding sleeve (401), so that the sliding sleeve (401) moves toward the needle (2) on the side away from the rotation ring (302). When the opening on the rotating ring (302) moves to the position of the limiting block (305), the limiting block (305) is pushed to move, so that the limiting block (305) is engaged and locked with the rotating ring (302).
7. The needle-stick-proof safety syringe according to claim 1, characterized in that: The sliding sleeve (401) and the protective baffle (402) are located between the fixing ring (301) and the syringe body (1); the limiting groove (403) is in the shape of a straight groove; the adjusting groove (404) is in the shape of a curved groove; and the protective baffle (402) is distributed in a ring shape at one end of the sliding sleeve (401).
8. The needle-stick-proof safety syringe according to claim 7, characterized in that: The end of the protective baffle (402) close to the needle (2) is fixedly connected to a support head (405), an elastic band (406) is sleeved on the outside of the protective baffle (402), and an inner recessed groove (407) is provided on the inner side of the end of the protective baffle (402) close to the sliding sleeve (401).
9. The needle-stick-proof safety syringe according to claim 8, characterized in that: When the protective baffle (402) surrounds the needle (2) inside, the elastic band (406) on the outside of the protective baffle (402) squeezes the protective baffle (402) to bend and shrink inward from the sunken groove (407), so that the supporting heads (405) contact and support each other, surrounding the needle (2) in a circular shape while not contacting the tip of the needle (2).
10. The needle-stick-proof safety syringe according to claim 6, characterized in that: When the limiting block (305) moves out of the opening of the rotating ring (302), the rotating ring (302) loses its lock, causing the rotating ring (302) to rotate and reset. The squeezing block (306) inside the rotating ring (302) squeezes the sliding sleeve (401) to move, thereby pushing the sliding sleeve (401) toward the side of the needle (2), so that the protective baffle (402) surrounds the needle (2).