Infusion needle stabbing prevention device

Abstract

The utility model provides an anti-puncture device for an infusion needle, and belongs to the technical field of medical safety and protection. And the clamping mechanism comprises a hand wheel arranged on the outer side of the fixing base, a connecting column fixedly connected to the outer surface of the hand wheel, a worm fixedly connected to the penetrating end of the connecting column, worm gears meshed with the three side surfaces of the worm correspondingly, and supporting shafts fixedly installed on the inner surfaces of the worm gears. Through direct cooperation of all parts in the clamping mechanism, the needle does not need to be inserted into a rubber block, the rubber clamping block is used for clamping and fixing the needle, and meanwhile the situation that the rubber clamping block relieves limiting of the needle due to accidental rotation of a hand wheel is avoided, so that it is guaranteed that the position of the needle is kept stable, and the working efficiency is improved. And through the limiting assembly, the rubber clamping block can continuously limit the needle head, and therefore the overall safety performance of the device is further improved.

Description

Technical Field

[0001] This utility model belongs to the field of medical safety and protection technology, specifically relating to an anti-puncture device for infusion needles. Background Technology

[0002] The main function of needlestick injection prevention devices is to reduce accidental needlestick injuries to medical staff during medical procedures, thereby improving medical safety and occupational health protection. By inserting the needle into a rubber block, the device prevents the needle from springing back during withdrawal, reducing the risk of accidental needlestick injuries. It also reduces the time the needle is exposed, lowering the risk of needle contamination and thus reducing the possibility of cross-infection.

[0003] Some existing technologies for preventing needle stick injuries in IV needles typically involve inserting the needle into a rubber block to prevent the needle from bouncing back and causing it to wobble. However, after repeated use, this method leaves numerous tiny pinholes on the surface of the rubber block. If these tiny pinholes converge into a large hole during use, the large hole on the surface of the rubber block may cause the needle to become loosely secured, increasing the risk of the needle falling off during operation. This not only affects the smooth progress of medical procedures but may also lead to accidental needle stick injuries. Utility Model Content

[0004] The purpose of this invention is to provide an anti-puncture device for infusion needles, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An anti-puncture device for infusion needles includes a fixing base;

[0007] The clamping mechanism includes a handwheel disposed on the outside of the fixed base, a connecting post fixedly connected to the outer surface of the handwheel, a worm fixedly connected to the through end of the connecting post, a worm wheel respectively meshing with three sides of the worm, a support shaft fixedly installed on the inner surface of the worm wheel, a connecting rod respectively fixedly sleeved on both ends of the support shaft, a rubber clamping block fixedly connected to the other end of the connecting rod, a support rod fixedly installed on the outer surface of the fixed base away from the handwheel and used in conjunction with the support shaft, and a limiting component disposed on the outer surface of the fixed base near the handwheel and used in conjunction with the connecting post.

[0008] In a preferred embodiment of this utility model, the outer surface of the connecting column is rotatably connected to the inner surface of the fixing seat, and the rubber clamp is made of polyurethane rubber.

[0009] As a preferred scheme of the utility model, the number of the support rods is three groups, three groups of the support rods are distributed in a circumferential array on the outer surface of the fixed seat, and the outer surface of the support shaft is in rotational contact with the inner surface of the support rod.

[0010] As a preferred scheme of the utility model, the limiting assembly comprises a fixed block fixedly installed on the outer surface of the fixed seat close to the hand wheel, and a support block fixedly connected to the outer surface of the fixed block.

[0011] As a preferred scheme of the utility model, the limiting assembly further comprises a spring fixedly installed on the inner side of the support block, and a pawl fixed to the bottom of the spring.

[0012] As a preferred scheme of the utility model, the limiting assembly further comprises a ratchet wheel fixedly sleeved on the outer surface of the connecting column and matched with the pawl, and a positioning column fixedly connected to the inner surface of the fixed block and matched with the pawl.

[0013] As a preferred scheme of the utility model, the teeth of the pawl are engaged with the teeth of the ratchet wheel, and the inner surface of the side of the pawl away from the spring is in rotational contact with the outer surface of the positioning column.

[0014] Compared with the prior art, the utility model has the beneficial effects that: through the direct cooperation of the components in the clamping mechanism, the needle is not inserted into the rubber block, the needle is clamped and fixed by the rubber clamping block, and the rubber clamping block is prevented from being released from limiting the needle due to accidental rotation of the hand wheel, so that the position of the needle is kept stable, the needle is prevented from pricking the medical staff due to rebound of the needle tube, the rubber clamping block is continuously limited to the needle through the limiting assembly, and the overall safety performance of the equipment is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor under the premise of not paying the creative labor. Among them:

[0016] Figure 1 It is the overall structure schematic view of the utility model;

[0017] Figure 2 It is the overall structure schematic view of the utility model Figure 1 It is the local structure enlarged schematic view of the utility model at A;

[0018] Figure 3 It is another view structure schematic view of the overall utility model;

[0019] Figure 4 For the utility model Figure 3 The local structure amplification schematic view of B place in the middle.

[0020] In the figure: 100, fixed seat;200, clamping mechanism;201, hand wheel;202, connecting column;203, worm;204, worm wheel;205, support shaft;206, connecting rod;207, rubber clamp block;208, support rod;209, limiting assembly;209a, fixed block;209b, support block;209c, spring;209d, pawl;209e, ratchet wheel;209f, positioning column. Specific implementation

[0021] In order to make the above-mentioned purpose, features and advantages of the utility model more apparent and easy to understand, the specific implementation of the utility model is described in detail below with the help of the attached drawings of the specification.

[0022] In the following description, a lot of specific details are set forth in order to facilitate a full understanding of the utility model, but the utility model can also be implemented in other ways different from the description herein, and those skilled in the art can make similar generalizations without departing from the connotation of the utility model, therefore the utility model is not limited by the specific embodiments disclosed below.

[0023] Secondly, the "one embodiment" or "embodiment" referred to here means that specific features, structures or characteristics can be included in at least one implementation of the utility model. In this specification, "in one embodiment" does not mean the same embodiment, nor is it an independent or alternative embodiment that excludes other embodiments.

[0024] Embodiment

[0025] Refer to Figures 1-4 For the embodiment of the utility model, the embodiment provides a transfusion needle anti-stabbing device, which can realize the effect of not needing to insert the needle into the rubber block, and can also clamp and fix the needle through the rubber clamp block 207, while avoiding the effect of the rubber clamp block 207 releasing the needle limiting due to the accidental rotation of the hand wheel 201.

[0026] Fixed seat 100;

[0027] It should be noted that the fixed seat 100 is used to bear the clamping mechanism 200, so as to avoid the position deviation of each part in the clamping mechanism 200.

[0028] The clamping mechanism 200 comprises a hand wheel 201 arranged outside the fixed seat 100, a connecting column 202 fixedly connected to the outer surface of the hand wheel 201, a worm 203 fixedly connected to the penetrating end of the connecting column 202, three worm gears 204 respectively engaged with the three side surfaces of the worm 203, a support shaft 205 fixedly installed on the inner surface of the worm gear 204, connecting rods 206 respectively fixedly sleeved on the two ends of the support shaft 205, rubber clamping blocks 207 fixedly connected to the other ends of the connecting rods 206, a support rod 208 fixedly installed on the outer surface of the fixed seat 100 away from the hand wheel 201 and matched with the support shaft 205, and a limiting assembly 209 arranged on the outer surface of the fixed seat 100 close to the hand wheel 201 and matched with the connecting column 202.

[0029] It should be noted that when the worm 203 rotates, the three worm gears 204 and the support shaft 205 are driven to rotate, so that the three support shafts 205 respectively drive the three connecting rods 206 and the rubber clamping blocks 207 to rotate, and the three rubber clamping blocks 207 form a cylindrical shape.

[0030] Specifically, the outer surface of the connecting column 202 is rotationally connected with the inner surface of the fixed seat 100, and the rubber clamping blocks 207 are made of polyurethane rubber material.

[0031] It should be further noted that the rubber clamping blocks 207 made of polyurethane rubber material have high elasticity, high wear resistance, aging resistance, ozone resistance and good oil resistance, so that they can still provide strong friction when facing the needle surface with a large amount of stains, so as to prevent the needle from falling off from the rubber clamping blocks 207.

[0032] Further, the number of support rods 208 is three groups, and the three groups of support rods 208 are distributed in a circumferential array on the outer surface of the fixed seat 100, and the outer surface of the support shaft 205 is in rotational contact with the inner surface of the support rod 208.

[0033] Preferably, the limiting assembly 209 comprises a fixed block 209a fixedly installed on the outer surface of the fixed seat 100 close to the hand wheel 201, and a support block 209b fixedly connected to the outer surface of the fixed block 209a.

[0034] It should be noted that the limiting assembly 209 further comprises a spring 209c fixedly installed on the inner side of the support block 209b, and a ratchet 209d fixed to the bottom of the spring 209c.

[0035] Further, the limiting assembly 209 further comprises a ratchet wheel 209e fixedly sleeved on the outer surface of the connecting column 202 and matched with the ratchet 209d, and a positioning column 209f fixedly connected to the inner surface of the fixed block 209a and matched with the ratchet 209d.

[0036] Need to explain, spring 209c for the pawl 209d reset, so that the pawl 209d can always with ratchet 209e mesh.

[0037] Specifically, the teeth of the pawl 209d and the teeth of the ratchet 209e mesh, the inner surface of the pawl 209d away from the spring 209c side and the outer surface of the positioning column 209f rotating contact.

[0038] Among them, the positioning column 209f is used to limit the pawl 209d, so that the pawl 209d can limit the ratchet 209e.

[0039] In use, after pulling out the needle, placed in the center of the three rubber clamping block 207, rotating the hand wheel 201 drive connecting column 202, worm 203 and ratchet 209e synchronous rotation, make the ratchet 209e on the pawl 209d extrusion, again by the pawl 209d to the spring 209c a pressure, provide worm 203 at the same time drive three worm gear 204 and support shaft 205 rotation, again through the worm gear 204 drive connecting rod 206 and rubber clamping block 207 synchronous rotation, so that the three rubber clamping block 207 form a cylindrical needle clamping, at the same time, through the spring 209c of the pawl 209d reset, so that the pawl 209d and ratchet 209e mesh, again through the positioning column 209f on the pawl 209d limit, so that the pawl 209d on the ratchet 209e and connecting column 202 limit, to realize the needle clamping fixed at the same time, to avoid the hand wheel 201 accidental rotation caused by the rubber clamping block 207 to remove the effect of the needle limit

[0040] Need to take out the needle; manually move the pawl 209d, move the pawl 209d to the position of the ratchet 209e disengagement, then rotate the hand wheel 201 in the opposite direction to drive the above mechanical movement in the opposite direction, so that the three rubber clamping block 207 moves to the position of the needle surface disengagement, to remove the fixed needle.

[0041] In summary, through the cooperation of each part in the clamping mechanism 200, without inserting the needle into the rubber block, through the rubber clamping block 207 on the needle clamping fixed at the same time, to avoid the hand wheel 201 accidental rotation caused by the rubber clamping block 207 to remove the effect of the needle limit, to ensure the position of the needle to maintain stable, avoid the needle tube rebound caused by the needle to hurt the medical staff effect, through the limiting assembly 209 can make the rubber clamping block 207 continuously on the needle limit, so as to further improve the overall safety performance of the equipment.

[0042] It is important to note that the construction and arrangements of the application shown in the various exemplary embodiments are illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications can be made to the embodiments without departing from the novel teachings and advantages of the subject matter described herein. For example, elements described as integrated in a single unit can be separated, elements described as separate can be integrated, and the position, number, shape, and arrangements of elements can be varied. Accordingly, all such modifications are intended to be included within the scope of the present inventive subject matter. The order or sequence of any process or method steps can be varied or re-sequenced without departing from the general nature of the claims. Any "means plus function" clauses are intended to cover the structures described herein as performing the recited functionality and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions can be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present inventive subject matter. Accordingly, the present inventive subject matter is not limited to the particular embodiments described and illustrated herein, but extends to equivalents of which the foregoing describes are intended to cover.

[0043] Furthermore, in order to provide a concise description of the exemplary embodiments, not all features of an actual implementation can be described (i.e., those pertaining to the

[0044] It is understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions can be made. Such development efforts can inevitably lead to a number of substitutions, modifications, changes, and omissions of parts illustrated as having a specific configuration. Such are the natural consequences of research and development efforts, and

[0045] It should be noted that the above examples are intended to illustrate the technical solutions of the present application but not limit the present application, and although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application, and all should be included in the scope of the claims of the present application.

Claims

1. A needle stick injury prevention device for an infusion needle, characterized by: The utility model relates to a fixing seat (100) and clamping mechanism (200) are provided. The utility model provides a fixing seat (100) and clamping mechanism (200) are provided. The outer surface of the connecting column (202) is rotatably connected with the inner surface of the fixing seat (100), and the rubber clamp block (207) is made of polyurethane rubber material.

2. The needle stick injury preventing device of claim 1, wherein: The number of the support rods (208) is three groups, and the three groups of support rods (208) are arranged in a circumferential array on the outer surface of the fixing seat (100).

3. The needle stick injury preventing device of claim 2, wherein: The outer surface of the support shaft (205) is rotatably connected with the inner surface of the support rod (208).

4. The needle stick injury preventing device of claim 3, wherein: The limiting assembly (209) comprises a fixing block (209a) fixedly installed on the outer surface of the fixing seat (100) close to the hand wheel (201), and a support block (209b) fixedly connected with the outer surface of the fixing block (209a).

5. The needle stick injury preventing device of claim 4, wherein: The limiting assembly (209) further comprises a spring (209c) fixedly installed on the inner side of the support block (209b), and a ratchet pawl (209d) fixed to the bottom of the spring (209c).

6. The needle stick injury preventing device of claim 5, wherein: The limiting assembly (209) further comprises a ratchet wheel (209e) fixedly sleeved on the outer surface of the connecting column (202) and matched with the ratchet pawl (209d), and a positioning column (209f) fixedly connected with the inner surface of the fixing block (209a) and matched with the ratchet pawl (209d).

7. The needle stick injury preventing device of claim 6, wherein: The teeth of the ratchet pawl (209d) are engaged with the teeth of the ratchet wheel (209e), and the inner surface of the side of the ratchet pawl (209d) away from the spring (209c) is rotatably connected with the outer surface of the positioning column (209f).

Images