Syringe needle disconnector

Abstract

The invention relates to the technical field of disconnectors, discloses an injector needle disconnector, and solves the problem that an existing injector needle disconnector is inconvenient to operate. A needle head is inserted into the inner side of a separating assembly through a needle penetrating hole A and a needle penetrating hole B, a wedge-shaped clamping block is automatically clamped at the pintle position, then a push plate is pushed through an injector, the push plate moves downwards relative to a lifting assembly, and a push rod moving downwards is promoted to push a pull belt to slide across the lower end of the pull belt; at the moment, the downward moving speed of the end, connected with the separating assembly, of the pulling belt is larger than the downward moving speed of the push rod, so that the separating assembly is separated from the lower surface of the push plate, and a wedge-shaped clamping block, clamping a pintle part, on the inner side of the separating assembly can pull the needle head out of the injector; an operator pushes the push plate through the injector, and can obviously feel the change of resistance from the beginning to the end, so that the pull-out process is conveniently controlled.

Description

Technical Field

[0001] The invention relates to the technical field of detachers, in particular to a syringe needle detacher. Background Art

[0002] When the used syringe needle is thrown into the sharps bin, the needle needs to be separated from the syringe. As a medical device accessory, the syringe needle remover is usually used to safely remove the needle from the syringe to prevent needle stick injuries when medical staff handle the syringe.

[0003] The existing publication number is CN111671998B, which discloses "a needle detacher for medical syringes", comprising: a mounting tube, the bottom of which is connected to a collecting bottle; a power storage mechanism, which is arranged on the mounting tube; a limiting mechanism, which is arranged on the power storage mechanism; a shedding mechanism, which is arranged at the lower part of the mounting tube, and the needle of the syringe is removed by the cooperation of the power storage mechanism, the limiting mechanism and the shedding mechanism;

[0004] According to the operating principle of the patent document, the needle plug of the syringe needs to be pushed to be clamped with the bevel scraper first. During the process, in order to ensure that the spring has sufficient elastic force to eject the needle tied to the syringe, and to overcome the elastic force of the reset spring, its elastic coefficient needs to be high. Therefore, it is not labor-saving in the process of compressing the spring, and the bevel scraper is located at the bottom of the entire device. Therefore, when the compression spring is not in place, the needle plug cannot establish a clamping connection with the bevel scraper, resulting in failure of the needle to disengage. Therefore, the retaining ring needs to be fully pressed down for each operation to ensure smooth disengagement of the needle, which makes actual use inconvenient. Summary of the invention

[0005] The purpose of the present invention is to provide a syringe needle detacher, which solves the problem of inconvenient operation of the existing syringe needle detacher.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a syringe needle detacher, comprising a detachment mechanism arranged on the upper side of a sharps box body, the detachment mechanism comprising a squeezing assembly for inserting a syringe needle, a detachment assembly for pulling a needle plug part is arranged on the inner lower surface of the squeezing assembly, a wedge-shaped clamping block for clamping the needle plug part is arranged on the inner lower surface of the detachment assembly, a lifting assembly is sleeved on the side of the squeezing assembly, a drawstring is connected between the lifting assembly and the detachment assembly, two drawstrings are symmetrically arranged on both sides of the detachment assembly, and a reset spring for pushing it to reset is arranged on the lower side of the detachment assembly;

[0007] The extrusion assembly includes a push plate, the upper surface of which is provided with a needle hole A for the needle to pass through, the upper surface of the disengagement assembly is provided with a needle hole B corresponding to the needle hole A, and a push rod is vertically fixedly installed on the lower surface of the push plate, and the lower end of the push rod is movably pressed against the middle of the upper surface of the drawstring.

[0008] Preferably, a rotating roller is provided at the lower end of the push rod, and the rotating roller is attached to the upper surface of the drawstring.

[0009] Preferably, the disengagement assembly includes an upper support plate that is in contact with the lower surface of the push plate, the needle threading hole B is opened on the upper surface of the upper support plate, and a needle pulling cylinder and a side wall D are fixedly provided on the lower surface of the upper support plate. The needle pulling cylinder is connected to the needle threading hole B, and the side wall D is arranged on the edge of the upper support plate. Two wedge-shaped blocks are symmetrically arranged on both sides of the annular lower support plate, and one side of the wedge-shaped block is provided with a pushing component that elastically pushes the wedge-shaped block to move toward the needle pulling cylinder. The opposite ends of the two wedge blocks are movably extended into the inner side of the needle pulling cylinder, and the lower side of the side wall D is fixedly connected to an annular lower support plate, and the annular lower support plate abuts against the upper side of the reset spring.

[0010] Preferably, a plurality of positioning baffles are fixedly connected to the lower surface of the push plate, and the plurality of positioning baffles are evenly fitted to the outer surface of the side wall D. The lower edge of the push plate is fixedly connected to the side wall A. Both ends of the pull strap are fixedly connected to a mounting seat, and one mounting seat is used for fixed connection to the outer surface of the side wall D.

[0011] Preferably, the lifting assembly includes a side wall B movably fitted to the outside of the side wall A, and a limiting enclosure is provided on the upper side of the side wall B for limiting the upward movement of the push plate. The other mounting seat is fixedly connected to the inner surface of the side wall B, and a strip groove is provided on the surface of the side wall A for the mounting seat to move up and down.

[0012] Preferably, the side surface of the side wall A is provided with a plane wall A pointing vertically downward, a square groove A is provided on the surface of the plane wall A, a plane wall B is provided on the side of the side wall B adjacent to the plane wall A, the plane wall B is parallel to the plane wall A, a square groove B and an installation groove are provided on the surface of the plane wall B, the horizontal projection of the square groove A is on the inner side of the installation groove as the plane wall A moves downward, and the square groove B is arranged parallel to the plane wall A.

[0013] Preferably, an outer cover assembly is nested on the outer side of the side wall B, and the outer cover assembly includes a side wall C surrounding the outer surface of the side wall B, the height of the side wall C is higher than the height of the side wall B, and the lower side of the side wall C is fixedly connected to a bottom plate, the return spring is fixedly installed on the upper surface of the bottom plate, and the needle extraction tube penetrates the bottom plate to the lower surface.

[0014] Preferably, a plane wall C parallel to the plane wall B is provided on one side of the side wall C adjacent to the plane wall B, and a lifting rod is rotatably mounted on the surface of the plane wall C.

[0015] Preferably, two pushing columns are fixedly connected to the side of the lifting rod close to the plane wall B, and the two pushing columns are respectively located at both ends of the lifting rod. One of the pushing columns moves on the inner side of the square groove B, and the other pushing column moves on the inner side of the square groove A after passing through the installation groove. A rotating column is fixedly installed on the side of the lifting rod close to the plane wall C, and the rotating column is rotatably connected to the surface of the plane wall C.

[0016] Preferably, the installation position of the plane wall C is close to the square groove B, and the plane wall C forms a lever with the rotating column as the rotating axis.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention provides a syringe needle detacher, which inserts the needle into the inner side of a detachment component through needle holes A and B, so that a wedge-shaped clamping block is automatically clamped in the needle plug position, and then a push plate is pushed by the syringe to make the push plate move downward relative to the pulling component, prompting the push rod moving downward to push a drawstring to slide over the lower end of the drawstring, and at this time, the downward movement speed of the end of the drawstring connected to the detachment component is greater than the downward movement speed of the push rod, so that the detachment component is separated from the lower surface of the push plate, so that the wedge-shaped clamping block on the inner side of the detachment component that clamps the needle plug position can pull the needle off the syringe, and in the process of pulling out the needle, the operator pushes the push plate through the syringe, and can clearly feel the change in resistance from the beginning to the end stage, thereby conveniently controlling the pulling out process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the installation position structure of the disengagement mechanism of the present invention;

[0020] Figure 2 It is a schematic diagram of the disengagement mechanism and the syringe docking structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the internal structure of the disengagement mechanism of the present invention;

[0022] Figure 4 For the present invention Figure 3 A is an enlarged schematic diagram;

[0023] Figure 5 It is a schematic diagram of the structure of the internal ejection and extrusion assembly of the disengagement mechanism of the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the extrusion assembly of the present invention;

[0025] Figure 7It is a schematic diagram of the connection structure between the lifting assembly and the outer cover assembly of the present invention;

[0026] Figure 8 It is a schematic diagram of the docking structure of the lifting assembly and the lifting rod of the present invention.

[0027] In the figure: 1, sharps box body; 11, cover; 12, clamp; 2, disengagement mechanism; 21, extrusion assembly; 211, push plate; 212, side wall A; 213, push rod; 214, positioning baffle; 215, plane wall A; 216, square groove A; 22, disengagement assembly; 221, upper abutment plate; 222, side wall D; 223, annular lower abutment plate; 224, needle puller; 23, lifting assembly; 231. Side wall B; 232. Limit enclosure; 233. Plane wall B; 234. Square groove B; 235. Mounting groove; 24. Outer cover assembly; 241. Side wall C; 242. Bottom plate; 243. Return spring; 244. Plane wall C; 245. Lifting rod; 246. Push column; 247. Rotating column; 25. Pull belt; 251. Mounting seat; 26. Wedge-shaped block; 261. Pushing component. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0029] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings.

[0030] Combination Figure 1-Figure 8 A syringe needle detacher comprises a detachment mechanism 2 arranged on the upper side of a sharps box body 1, the detachment mechanism 2 comprises a squeezing assembly 21 for inserting a syringe needle, a detachment assembly 22 for pulling a needle plug is arranged on the inner lower surface of the squeezing assembly 21, a wedge-shaped clamping block 26 for clamping the needle plug is arranged on the inner lower surface of the detachment assembly 22, a lifting assembly 23 is sleeved on the side of the squeezing assembly 21, a drawstring 25 is connected between the lifting assembly 23 and the detachment assembly 22, two drawstrings 25 are symmetrically arranged on both sides of the detachment assembly 22, and a reset spring 243 for pushing the detachment assembly 22 to reset is arranged on the lower side of the detachment assembly 22;

[0031] The extrusion assembly 21 includes a push plate 211, and a needle hole A for the needle to pass through is opened on the upper surface of the push plate 211. A needle hole B corresponding to the needle hole A is opened on the upper surface of the separation assembly 22. A push rod 213 is vertically fixedly installed on the lower surface of the push plate 211, and the lower end of the push rod 213 is movably pressed against the middle of the upper surface of the drawstring 25.

[0032] The above working principle and technical effect are as follows: the needle is inserted into the inner side of the detachment component 22 through the needle hole A and the needle hole B, so that the wedge-shaped block 26 is automatically stuck in the needle plug position, and then the push plate 211 is pushed by the syringe, so that the push plate 211 moves downward relative to the lifting component 23, prompting the downwardly moving push rod 213 to push the draw belt 25 to slide over the lower end of the draw belt 25. At this time, the downward movement speed of the end of the draw belt 25 connected to the detachment component 22 will be greater than the downward movement speed of the push rod 213, so that the detachment component 22 is separated from the lower surface of the push plate 211, so that the wedge-shaped block 26 on the inner side of the detachment component 22 that is stuck in the needle plug position can pull the needle out of the syringe. In the process of pulling out the needle, the operator pushes the push plate 211 through the syringe, and can clearly feel the change in resistance from the beginning to the end stage, thereby more conveniently controlling the pulling process;

[0033] The reset spring 243 is only used to push the disengagement assembly 22 to reset when the syringe is not against the upper side of the push plate 211, and to reset the extrusion assembly 21 as well. Therefore, the elastic coefficient of the reset spring 243 does not need to be set larger, making the process of pushing the extrusion assembly 21 more labor-saving.

[0034] Furthermore, a rotating roller is provided at the lower end of the push rod 213, and the rotating roller is attached to the upper surface of the drawstring 25, so as to reduce the resistance of the drawstring 25 when it moves at the lower end of the push rod 213;

[0035] Furthermore, the disengagement assembly 22 includes an upper plate 221 that is fitted with the lower surface of the push plate 211, and the needle threading hole B is opened on the upper surface of the upper plate 221. The lower surface of the upper plate 221 is fixedly provided with a needle extraction cylinder 224 and a side wall D222. The needle extraction cylinder 224 is connected to the needle threading hole B, and the side wall D222 is arranged on the edge of the upper plate 221. Two wedge-shaped blocks 26 are symmetrically arranged on both sides of the annular lower plate 223. One side of the wedge-shaped block 26 is provided with a pushing component 261 that elastically pushes the wedge-shaped block 26 to move toward the needle extraction cylinder 224. The opposite ends of the two wedge-shaped blocks 26 are movably extended into the inner side of the needle extraction cylinder 224. The lower side of the side wall D222 is fixedly connected with an annular lower plate 223, and the annular lower plate 223 is pressed against the upper side of the reset spring 243. The pushing component 261 elastically pushes the wedge-shaped block 26, including spring pushing or magnetic pushing, and the needle extraction cylinder 224 is used to guide the needle to slide down along its inner wall;

[0036] Furthermore, a plurality of positioning baffles 214 are fixedly connected to the lower surface of the push plate 211, and the plurality of positioning baffles 214 are evenly attached to the outer surface of the side wall D222. The lower edge of the push plate 211 is fixedly connected to the side wall A212, and both ends of the pull belt 25 are fixedly connected to a mounting seat 251, and one mounting seat 251 is used for fixed connection to the outer surface of the side wall D222.

[0037] Furthermore, the lifting assembly 23 includes a side wall B231 movably attached to the outer side of the side wall A212, a limiting enclosure 232 is provided on the upper side of the side wall B231 to limit the push plate 211 to move upward, another mounting seat 251 is fixedly connected to the inner surface of the side wall B231, and a strip groove is provided on the surface of the side wall A212 for the mounting seat 251 to move up and down;

[0038] Further, a plane wall A215 pointing vertically downward is disposed on the side surface of the side wall A212, a square groove A216 is provided on the surface of the plane wall A215, a plane wall B233 is provided on the side of the side wall B231 adjacent to the plane wall A215, the plane wall B233 is parallel to the plane wall A215, a square groove B234 and a mounting groove 235 are provided on the surface of the plane wall B233, the horizontal projection of the square groove A216 is on the inner side of the mounting groove 235 as the plane wall A215 moves downward, and the square groove B234 is arranged parallel to the plane wall A215;

[0039] In the previous embodiment: the outer side of the side wall B231 is nested with an outer cover assembly 24, the outer cover assembly 24 includes a side wall C241 surrounding the outer surface of the side wall B231, the height of the side wall C241 is higher than the height of the side wall B231, the lower side of the side wall C241 is fixedly connected to a bottom plate 242, the return spring 243 is fixedly installed on the upper surface of the bottom plate 242, and the needle puller 224 penetrates the bottom plate 242 to the lower surface;

[0040] Furthermore, a plane wall C244 parallel to the plane wall B233 is provided on one side of the side wall C241, and a lifting rod 245 is rotatably mounted on the surface of the plane wall C244;

[0041] Furthermore, two push columns 246 are fixedly connected to one side of the lifting rod 245 close to the plane wall B233. The two push columns 246 are respectively located at both ends of the lifting rod 245. One push column 246 moves on the inner side of the square groove B234, and the other push column 246 moves on the inner side of the square groove A216 after passing through the installation groove 235. A rotating column 247 is fixedly installed on one side of the lifting rod 245 close to the plane wall C244. The rotating column 247 is rotatably connected to the surface of the plane wall C244.

[0042] Furthermore, the installation position of the plane wall C244 is close to the square groove B234, and the plane wall C244 forms a lever with the rotating column 247 as the rotating axis.

[0043] The above working principle is: during operation, when the needle of the syringe is inserted into the needle barrel 224, the wedge-shaped block 26 is automatically stuck in the needle plug position by the push component 261, and then the push plate 211 is pushed downward by the syringe. At this time, the square groove A216 on the surface of the plane wall A215 will drive one end of the lifting rod 245 downward through the inner pushing column 246. The end that moves downward is the longer side of the lever, so the other end will be driven to tilt up during the downward movement. The tilted end will lift the side wall B231 upward through the corresponding connected pushing column 246. In this way, through the action of the lifting rod 245, when the push plate 211 is pressed down, the side wall B231 can be lifted up with little effort, so that the side wall B231 moves upward relative to the push plate 211. In this process, the pull belt 25 pulls the side wall D222 relative to the push plate 211 through the action of the push rod 213. The extrusion assembly 21 moves downward, and at this time the wedge-shaped block 26 on the lower surface of the upper support plate 221 can automatically pull the needle off the syringe, causing it to slide down from the syringe extraction tube 224 and fall into the sharp tool box body 1. At the same time, the annular lower support plate 223 will also compress the return spring 243. After the extrusion force of the syringe on the upper surface of the push plate 211 is removed, the return spring 243 will push the annular lower support plate 223 to restore its position. Furthermore, the pull strap 25 and the lifting rod 245 will also act on the side wall B231 and the side wall A212 to restore their position until the limit enclosure 232 limits the upper surface of the push plate 211, so that the state of the entire device is restored for the next use. The structure of the device is simple and reasonable, so it effectively reduces the failure rate during use, and it also saves effort during use, greatly improving the comfort of use.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A syringe needle detacher, characterized in that: The invention comprises a disengagement mechanism (2) arranged on the upper side of a sharps box body (1), the disengagement mechanism (2) comprising a squeezing assembly (21) for inserting a syringe needle, a disengagement assembly (22) for pulling a needle plug is arranged on the inner lower surface of the squeezing assembly (21), a wedge-shaped clamping block (26) for clamping the needle plug is arranged on the inner lower surface of the disengagement assembly (22), a lifting assembly (23) is sleeved on the side of the squeezing assembly (21), a drawstring (25) is connected between the lifting assembly (23) and the disengagement assembly (22), two drawstrings (25) are symmetrically arranged on both sides of the disengagement assembly (22), and a reset spring (243) for pushing the disengagement assembly (22) to reset is arranged on the lower side of the disengagement assembly (22); The extrusion assembly (21) comprises a push plate (211), the upper surface of which is provided with a needle hole A for the needle to pass through, the upper surface of the disengagement assembly (22) is provided with a needle hole B corresponding to the needle hole A, and a push rod (213) is vertically fixedly installed on the lower surface of the push plate (211), and the lower end of the push rod (213) is movably pressed against the middle part of the upper surface of the drawstring (25).

2. A syringe needle remover according to claim 1, characterized in that: A rotating roller is provided at the lower end of the push rod (213), and the rotating roller is attached to the upper surface of the drawstring (25).

3. A syringe needle remover according to claim 1, characterized in that: The disengagement assembly (22) comprises an upper abutment plate (221) which is in contact with the lower surface of the push plate (211); the needle threading hole B is provided on the upper surface of the upper abutment plate (221); a needle pulling cylinder (224) and a side wall D (222) are fixedly provided on the lower surface of the upper abutment plate (221); the needle pulling cylinder (224) is communicated with the needle threading hole B; the side wall D (222) is provided at the edge of the upper abutment plate (221); the wedge-shaped block (26) is symmetrically arranged on the lower annular Two abutment plates (223) are provided on both sides, one side of the wedge-shaped block (26) is provided with a pushing component (261) for elastically pushing the wedge-shaped block (26) to move toward the needle-pulling cylinder (224), and opposite ends of the two wedge-shaped blocks (26) are movably extended into the inner side of the needle-pulling cylinder (224), and the lower side of the side wall D (222) is fixedly connected with an annular lower abutment plate (223), and the annular lower abutment plate (223) abuts against the upper side of the return spring (243).

4. A syringe needle remover according to claim 3, characterized in that: The lower surface of the push plate (211) is fixedly connected with a plurality of positioning baffles (214), and the plurality of positioning baffles (214) are evenly fitted on the outer surface of the side wall D (222). The lower edge of the push plate (211) is fixedly connected with the side wall A (212), and both ends of the pull belt (25) are fixedly connected with a mounting seat (251), and one mounting seat (251) is used for fixed connection to the outer surface of the side wall D (222).

5. A syringe needle remover according to claim 4, characterized in that: The lifting assembly (23) includes a side wall B (231) movably fitted on the outside of the side wall A (212), and a limiting enclosure (232) is provided on the upper side of the side wall B (231) for limiting the upward movement of the push plate (211), and another mounting seat (251) is fixedly connected to the inner surface of the side wall B (231), and a strip groove is opened on the surface of the side wall A (212) for the mounting seat (251) to move up and down.

6. A syringe needle remover according to claim 5, characterized in that: The side surface of the side wall A (212) is provided with a plane wall A (215) extending vertically downward, and the surface of the plane wall A (215) is provided with a square groove A (216). The side of the side wall B (231) adjacent to the plane wall A (215) is provided with a plane wall B (233), and the plane wall B (233) is parallel to the plane wall A (215). The surface of the plane wall B (233) is provided with a square groove B (234) and a mounting groove (235). As the plane wall A (215) moves downward, its horizontal projection is on the inner side of the mounting groove (235), and the square groove B (234) is arranged parallel to the plane wall A (215).

7. A syringe needle remover according to claim 6, characterized in that: An outer cover assembly (24) is nested on the outer side of the side wall B (231), and the outer cover assembly (24) includes a side wall C (241) surrounding the outer surface of the side wall B (231), the height of the side wall C (241) is higher than the height of the side wall B (231), and the lower side of the side wall C (241) is fixedly connected to a bottom plate (242), the return spring (243) is fixedly installed on the upper surface of the bottom plate (242), and the needle removal tube (224) passes through the bottom plate (242) to the lower surface.

8. A syringe needle remover according to claim 7, characterized in that: A plane wall C (244) parallel to the plane wall B (233) is arranged on one side of the side wall C (241), and a lifting rod (245) is rotatably mounted on the surface of the plane wall C (244).

9. A syringe needle remover according to claim 8, characterized in that: Two pushing columns (246) are fixedly connected to one side of the lifting rod (245) close to the plane wall B (233). The two pushing columns (246) are respectively located at the two ends of the lifting rod (245). One of the pushing columns (246) moves on the inner side of the square groove B (234), and the other pushing column (246) moves on the inner side of the square groove A (216) after passing through the installation groove (235). A rotating column (247) is fixedly installed on one side of the lifting rod (245) close to the plane wall C (244). The rotating column (247) is rotatably connected to the surface of the plane wall C (244).

10. A syringe needle remover according to claim 9, characterized in that: The installation position of the plane wall C (244) is close to the square groove B (234), and the plane wall C (244) forms a lever with the rotating column (247) as the rotating axis.

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