Straight tip forceps with stopper

Abstract

The utility model provides a straight head tweezers with a stopper, including elastic sheet, the elastic sheet is set up in U shape, both ends of elastic sheet all are fixedly connected with adjusting mechanism, the outside fixed mounting of adjusting mechanism has clamping arm, the outside fixed mounting of clamping arm has tweezers chuck, the outside fixed connection of clamping arm has limit mechanism, the end of limit mechanism is covered in the outside of tweezers chuck, during the application of this tweezers, the limit mechanism of its tweezers controls the depth of chuck through guide rail, slide and concave protection stopper, when adjusting, loosens the limit screw slide and adjusts the protection stopper position, in the operation, the protection stopper first contacts dialysis liquid mouth and forms physical limit, the depth error is controlled in 0.2mm, the risk of membrane bundle injury reduces more than 90%, the concave protection stopper covers the outside of chuck, provides lateral protection and does not shield the inside clamping area, the convex letter slide and guide rail ensure that the adjustment is convenient and stable, and safety and clamping effect are considered.

Description

Technical Field

[0001] This utility model relates to the field of medical assistive device technology, and in particular to straight-tipped forceps with a stop block. Background Technology

[0002] Currently, in the dialyzer production process, the glue injection process at the dialysate port is a key step to ensure the product's sealing. However, the existing process has significant defects. The residual glue after injection needs to be cleaned manually using straight-tipped tweezers. However, traditional straight-tipped tweezers face two major problems in operation.

[0003] On the one hand, due to the fixed structure of the tweezers head and the lack of a guiding design, operators are prone to touching the internal membrane bundles when removing glue residue if they apply too much force or at an improper angle, causing the membrane structure to be broken, resulting in the dialyzer being scrapped and increasing production costs. On the other hand, the existing tweezers have a fixed length and cannot be flexibly adjusted according to the operator's hand gestures, operating space limitations, or structural differences between different dialyzer models. This makes it difficult to operate accurately in deep cavities or narrow spaces, especially in scenarios requiring precise control of force and depth. Fixed-length tweezers affect operating efficiency and cannot meet the clamping requirements under different working conditions. Furthermore, during the application of existing technologies, the requirements for precision and automation in dialyzer production have been increasing. The non-adjustability and operational risks of traditional tweezers have become bottlenecks restricting production efficiency and product yield. Although some adjustable tools exist in existing technologies, most are designed for general scenarios and do not fully consider the fragility of the internal membrane bundles of the dialyzer and the special working conditions of cleaning the glue inlet. There is a lack of dedicated tools that combine length adjustability and damage prevention. It is clear that the application of existing technologies has certain defects and shortcomings, and therefore, it is necessary to improve the design. Utility Model Content

[0004] To address the aforementioned problems, this invention proposes straight-tipped tweezers with a stop block, which can more accurately solve the problems described above.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model proposes a straight-tipped tweezer with a stop block, including a spring piece. The spring piece is U-shaped, and an adjustment mechanism is fixedly connected to both ends of the spring piece. A clamping arm is fixedly installed on the outer side of the adjustment mechanism. A tweezer chuck is fixedly installed on the outer end of the clamping arm. A limiting mechanism is fixedly connected to the outer side of the clamping arm, and the end of the limiting mechanism covers the outer side of the tweezer chuck.

[0007] The limiting mechanism includes a guide rail, which is fixedly installed on the outside of the clamping arm. A slide bar is slidably connected inside the guide rail. A connecting rod is fixedly connected to one end of the slide bar near the tweezers chuck. A protective stop block is fixedly connected to the end of the connecting rod. A limiting screw is fixedly connected to one end of the slide bar near the spring piece. The end of the limiting screw passes through the slide bar.

[0008] Furthermore, the protective block is concave in shape and covers the outside of the tweezers gripper.

[0009] Furthermore, the guide rail has limit holes arranged linearly at equal intervals inside, and the end of the limit screw is inserted into the limit hole through the slide bar.

[0010] Furthermore, the limiting screw is a hand-tightening screw, and the overall cross-sectional shape of the slide bar and the guide rail internal cavity is convex.

[0011] Furthermore, an anti-slip pad is fixedly connected to the inner side of the tweezers clamp, and anti-slip grooves are formed on the inner side of the anti-slip pad in a linear arrangement at equal intervals.

[0012] Furthermore, the adjustment mechanism includes a sleeve frame, which is fixedly connected to both ends of the spring piece. A sliding plate is inserted inside the sleeve frame, and the outer end of the sliding plate is fixedly connected to the clamping arm. Arc-shaped locking holes are linearly arranged at equal intervals on the sliding plate. A limiting component is fixedly connected to the outer end of the sleeve frame away from the spring piece, and the end of the limiting component is inserted into the arc-shaped locking hole.

[0013] Furthermore, the limiting component includes a cylinder, which is fixedly connected to the end of the outer surface of the sleeve away from the spring piece. A torsion spring is fixedly connected inside the cylinder, and a turntable is fixedly connected to the outer end of the torsion spring. A limiting rod is fixedly connected to the outer side of the turntable. The outer end of the limiting rod is arc-shaped, and the end of the limiting rod is inserted into the interior of an arc-shaped locking hole. The arc-shaped locking hole and the arc-shaped outer end of the limiting rod are both concentric with the torsion spring. A connecting rod is fixedly connected to the side of the turntable near the torsion spring. The end of the connecting rod passes through the cylinder and is fixedly connected to a handle. Stripes are evenly spaced on the outer surface of the handle.

[0014] The beneficial effects of this utility model are:

[0015] 1. This straight-tipped forceps with a stop block achieves adaptive adjustment of the clamping arm length through the adjustment mechanism at both ends of the spring plate. The adjustment mechanism consists of a sleeve frame, a sliding plate, and a torsion spring limiting assembly. Rotating the knob can disengage the limiting rod from the locking hole. After sliding the sliding plate to the target length, the torsion spring resets and drives the limiting rod to engage in the new locking hole for locking. This design can flexibly adjust the arm length according to the dialyzer chamber depth, which can effectively improve its adaptability, reduce tool costs, and combine efficiency and stability.

[0016] 2. During application, the limiting mechanism of this forceps precisely controls the insertion depth of the chuck through the guide rail, slider, and concave protective stop. When adjusting, loosen the limiting screw and slide the slider to adjust the position of the stop. During operation, the stop first contacts the dialysate port to form a physical limit, and the depth error is controlled within ±0.2mm, reducing the risk of membrane bundle damage by more than 90%. The concave stop covers the outside of the chuck, providing lateral protection without obstructing the inner clamping area. The convex slider and guide rail ensure convenient and stable adjustment, balancing safety and clamping effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a top view of the structure of this utility model;

[0019] Figure 3 This is a top view of the disassembled structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the side test structure of this utility model.

[0021] In the diagram: 1. Spring; 2. Adjustment mechanism; 21. Sleeve frame; 22. Slide plate; 23. Arc-shaped locking hole; 24. Limiting component; 241. Cylinder; 242. Torsion spring; 243. Turntable; 244. Limiting rod; 245. Connecting rod; 246. Button handle; 3. Clamping arm; 4. Tweezer chuck; 5. Limiting mechanism; 51. Guide rail; 52. Slide bar; 53. Connecting rod; 54. Protective stop; 55. Limiting screw; 56. Limiting hole; 6. Anti-slip pad; 7. Anti-slip groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] A straight-tipped tweezer with a stop block includes a spring piece 1, which is U-shaped. An adjustment mechanism 2 is fixedly connected to both ends of the spring piece 1. A clamping arm 3 is fixedly installed on the outside of the adjustment mechanism 2. A tweezer chuck 4 is fixedly installed on the outside of the clamping arm 3. A limiting mechanism 5 is fixedly connected to the outside of the clamping arm 3. The end of the limiting mechanism 5 covers the outside of the tweezer chuck 4.

[0025] The limiting mechanism 5 includes a guide rail 51, which is fixedly installed on the outside of the clamping arm 3. A slide bar 52 is slidably connected inside the guide rail 51. A connecting rod 53 is fixedly connected to one end of the slide bar 52 near the tweezers chuck 4. A protective stop 54 is fixedly connected to the end of the connecting rod 53. A limiting screw 55 is fixedly connected to the outer end of the slide bar 52 near the spring 1. The end of the limiting screw 55 passes through the slide bar 52. During use, when this straight-tipped tweezers with the stop is working, the U-shaped spring 1 is connected to the clamping arm 3 through the two-end adjustment mechanism 2. The operator can squeeze the spring 1 to drive the tweezers chuck 4 to open and close to clamp or remove the colloid. The limiting mechanism 5 on the outside of the clamping arm 3 achieves depth control through the guide rail 51, the slide bar 52, and the protective stop 54: the guide rail 51 is fixed to the clamping arm 3, the slide bar 52... The slide bar 52 can slide along the guide rail 51. One end of the slide bar 52 is connected to the concave protective block 54 via the connecting rod 53, and the other end is provided with a limiting screw 55 that passes through the slide bar 52 and is inserted into the limiting hole 56 of the guide rail 51. In use, first loosen the limiting screw 55 according to the structure of the dialysate port or the position of the colloid, slide the slide bar 52 to adjust the distance between the protective block 54 and the tip of the chuck, so that the edge of the protective block 54 and the chuck maintain a safe distance. After adjustment, tighten the screw to fix it. During operation, when the chuck is inserted into the dialysate port, the protective block 54 first contacts the edge of the port to form a physical limit, preventing the chuck from going too deep. If too much force is applied, the slide bar 52 can slide slightly in the guide rail 51 to buffer and prevent the tip from touching the membrane bundle. At the same time, the protective block 54 covers the outside of the chuck to provide lateral protection and ensure the safety and accuracy of the colloid picking process.

[0026] Combining 1- Figure 4 As shown, the protective block 54 is concave in shape and covers the outside of the tweezers chuck 4. The guide rail 51 has limit holes 56 arranged linearly at equal intervals inside. The end of the limit screw 55 passes through the slide bar 52 and is inserted into the limit hole 56. The limit screw 55 is a hand-tightening screw. The overall cross-sectional shape of the slide bar 52 and the guide rail 51 is convex. The anti-slip pad 6 is fixedly connected to the inside of the tweezers chuck 4. The anti-slip pad 6 has anti-slip grooves 7 arranged linearly at equal intervals on the inside of the anti-slip pad 6.

[0027] In the above-described embodiments of this application, during the use of this device, when the straight-tipped tweezers with a stop are in operation, the U-shaped spring 1 is connected to the clamping arm 3 through the two-end adjustment mechanism 2. The operator squeezes the spring 1 to drive the tweezers chuck 4 to open and close to clamp or remove the colloid. The concave protective stop 54 covers the outside of the chuck, and its edge maintains a safe distance from the tip of the chuck. When the chuck is inserted into the dialysate port, the protective stop 54 first contacts the edge of the port to form a physical limit, preventing the chuck from going too deep. If too much force is applied, the slide bar 52 can slide slightly within the guide rail 51 for buffering. The equally spaced limiting holes 56, in conjunction with the hand-tightening limiting screws 55, allow the position of the protective block 54 to be adjusted according to the thickness of the dialysate port or the position of the colloid: after loosening the screw, slide the slider 52; after adjustment, tighten the screw so that the end is inserted into the corresponding limiting hole 56 and locked. The convex slider 52 and the internal cavity of the guide rail 51 prevent the slider 52 from falling off, ensuring adjustment stability. The anti-slip pads 6 and anti-slip grooves 7 on the inner side of the tweezers chuck 4 increase the friction with the colloid, improve the clamping effect, and achieve precise removal of residual colloid while avoiding damage to the internal membrane bundles of the dialyzer.

[0028] Example 2

[0029] Combination Figures 2-4 As shown, the adjusting mechanism 2 includes a sleeve frame 21, which is fixedly connected to both ends of the spring piece 1. A sliding plate 22 is inserted inside the sleeve frame 21, and the outer end of the sliding plate 22 is fixedly connected to the clamping arm 3. Arc-shaped locking holes 23 are linearly arranged at equal intervals on the sliding plate 22. A limiting component 24 is fixedly connected to the outer end of the sleeve frame 21 away from the spring piece 1. The end of the limiting component 24 is inserted into the arc-shaped locking hole 23. The limiting component 24 includes a cylinder 241, which is fixedly connected to the outer surface of the sleeve frame 21 away from the spring piece 1. The inner end of the cylinder 241 is fixedly connected to... There is a torsion spring 242, and a turntable 243 is fixedly connected to the outer end of the torsion spring 242. A limit rod 244 is fixedly connected to the outer side of the turntable 243. The outer end of the limit rod 244 is arc-shaped and the end of the limit rod 244 is inserted into the arc-shaped locking hole 23. The arc-shaped locking hole 23 and the arc-shaped outer end of the limit rod 244 are both concentric with the torsion spring 242. A connecting rod 245 is fixedly connected to the side of the turntable 243 near the torsion spring 242. The end of the connecting rod 245 passes through the cylinder 241 and is fixedly connected to a handle 246. Anti-slip textures are evenly spaced on the outer surface of the handle 246.

[0030] In the above-described embodiments of the present application, during use, when the adjustment mechanism 2 of the straight-tipped tweezers with a stop block is working, a slide plate 22 connected to the clamping arm 3 is inserted into the sleeve frame 21 at both ends of the U-shaped spring 1. The arc-shaped locking hole 23 on the slide plate 22 cooperates with the limiting component 24 to achieve length adjustment. The cylinder 241 of the limiting component 24 is fixed to the outside of the sleeve frame 21. One end of the internal torsion spring 242 is connected to the cylinder 241, and the other end is connected to the turntable 243. The arc-shaped limiting rod 244 on the outside of the turntable 243 is inserted into the arc-shaped locking hole 23 of the slide plate 22. When the operator rotates the knob 246, the surface anti-slip texture increases friction, which can improve its torsional stability and convenience. When the knob 246 is turned, the turntable 243 will rotate against the spring force of the torsion spring 242, causing the limit rod 244 to disengage from the current locking hole. At this time, the slide plate 22 can be slid along the sleeve frame 21 to adjust the length of the clamping arm 3. After the adjustment is completed, the knob 246 is released, the torsion spring 242 resets and drives the turntable 243 to rotate, so that the limit rod 244 is locked into the new arc-shaped locking hole 23. Since the arc-shaped locking hole 23 and the outer arc of the limit rod 244 are both centered on the torsion spring 242, it is ensured that the limit rod 244 is tightly fitted with the locking hole when locked, so as to realize the quick adjustment of the length of the clamping arm 3 with one hand, adapting to different dialyzer chamber depths or operating space requirements, while ensuring the stability and operating accuracy after adjustment.

[0031] The working principle and advantages of this utility model are as follows: During application, the straight-tipped tweezers with a stop block can adaptively adjust the length of the clamping arm 3 through the adjustment mechanism 2 at both ends of the spring piece 1. The adjustment mechanism 2 consists of a sleeve frame 21, a slide plate 22, and a torsion spring 242 limiting assembly 24: the sleeve frame 21 is fixed to the end of the spring piece 1, and the slide plate 22 connected to the clamping arm 3 is inserted inside. The slide plate 22 has equally spaced arc-shaped locking holes 23; the cylinder 241 of the limiting assembly 24 is fixed to the outside of the sleeve frame 21, and one end of the internal torsion spring 242 is connected to the cylinder 241, and the other end is linked to the turntable 243. The limiting rod 244 on the outside of the turntable 243 can be inserted into the arc-shaped locking hole 23 of the slide plate 22. During operation, rotating the knob 246... The rotating disc 243 overcomes the spring force of the torsion spring 242 to rotate, causing the limiting rod 244 to disengage from the locking hole. The sliding plate 22 slides within the frame 21 to the target length. After adjustment, the knob 246 is released, and the torsion spring 242 returns to its original position, driving the disc 243 to rotate. The rotation of the disc 243 drives the limiting rod 244 to engage in the new locking hole to complete the locking. This design allows for flexible adjustment of the arm length according to the dialyzer chamber depth and the operator's hand gestures. For example, it can be extended to 15cm for deep chamber operation to accurately reach the colloid, and shortened to 10cm for shallow chamber operation to improve control precision. The overall adjustment can be completed quickly within 5 seconds, combining efficiency and stability, reducing the tool cost of traditional multiple sets of fixed-length tweezers, and is compatible with more than 90% of dialyzer models.

[0032] During application, the limiting mechanism 5 of this forceps, through the setting of guide rail 51, slider 52, and concave protective block 54, can achieve precise control of the insertion depth of the forceps chuck 4. During use, the guide rail 51 is fixed to the outside of the clamping arm 3, and the slider 52 is connected to the protective block 54 through the connecting rod 53. The protective block 54 covers the outside of the forceps chuck 4 and maintains a safe distance from the tip. During adjustment, loosen the hand-tightening limiting screw 55, slide the slider 52 along the guide rail 51 to move the protective block 54 closer to or away from the forceps chuck 4, and lock it after being positioned through the limiting hole 56. The position of the protective block 54 can be adjusted according to the thickness of the dialysate port or the position of the colloid. During operation, the protective block 54 contacts the edge of the dialysate port before the forceps chuck 4, forming a physical limit. For example, if too much force is applied when picking up adhesive, the protective block 54 abuts against the outer wall of the port, and the slider 52 slides slightly within the guide rail 51 to buffer the depth error within ±0.2mm, preventing the tip from touching the membrane bundle. The concave protective block 54's covering design not only restricts the tweezers 4 from going deeper, but also provides lateral protection when holding adhesive residue. Even if the tweezers 4 deviates at an angle, the protective block 54 can prevent it from directly contacting the membrane bundle. Actual tests show that it reduces the risk of membrane bundle damage by more than 90%. At the same time, the anti-drop structure of the convex slider 52 and the guide rail 51 ensures convenient adjustment and stability, taking into account both safety and operational efficiency. Furthermore, since it covers the outside of the tweezers 4, it can avoid obstructing the inside of the tweezers 4, thus maintaining the clamping effect of the tweezers 4.

[0033] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. Straight-tipped tweezers with a stopper, characterized in that, Includes a spring (1), the spring (1) is U-shaped, and both ends of the spring (1) are fixedly connected to an adjustment mechanism (2). A clamping arm (3) is fixedly installed on the outside of the adjustment mechanism (2). A tweezer chuck (4) is fixedly installed on the outside of the clamping arm (3). A limiting mechanism (5) is fixedly connected on the outside of the clamping arm (3). The end of the limiting mechanism (5) covers the outside of the tweezer chuck (4). The limiting mechanism (5) includes a guide rail (51), which is fixedly installed on the outside of the clamping arm (3). A slide bar (52) is slidably connected inside the guide rail (51). A connecting rod (53) is fixedly connected to one end of the slide bar (52) near the tweezers chuck (4). A protective stop block (54) is fixedly connected to the end of the connecting rod (53). A limiting screw (55) is fixedly connected to one end of the slide bar (52) near the spring piece (1). The end of the limiting screw (55) passes through the slide bar (52).

2. The straight-tipped tweezers with a stop block according to claim 1, characterized in that, The protective block (54) is concave in shape and covers the outside of the tweezers chuck (4).

3. The straight-tipped tweezers with a stop block according to claim 1, characterized in that, The guide rail (51) has limit holes (56) arranged linearly at equal intervals inside, and the end of the limit screw (55) is inserted into the limit hole (56) through the slide bar (52).

4. The straight-tipped tweezers with a stop block according to claim 3, characterized in that, The limiting screw (55) is a hand-tightening screw, and the overall cross-sectional shape of the internal cavity of the slide bar (52) and the guide rail (51) is convex.

5. The straight-tipped tweezers with a stop block according to claim 1, characterized in that, The inner side of the tweezers chuck (4) is fixedly connected to an anti-slip pad (6), and the inner side of the anti-slip pad (6) is provided with anti-slip grooves (7) arranged linearly at equal intervals.

6. The straight-tipped tweezers with a stop block according to claim 1, characterized in that, The adjustment mechanism (2) includes a sleeve frame (21), which is fixedly connected to both ends of the spring piece (1). A sliding plate (22) is inserted inside the sleeve frame (21). The outer end of the sliding plate (22) is fixedly connected to the clamping arm (3). Arc-shaped locking holes (23) are arranged linearly at equal intervals on the sliding plate (22). A limiting component (24) is fixedly connected to the outer end of the sleeve frame (21) away from the spring piece (1). The end of the limiting component (24) is inserted into the arc-shaped locking hole (23).

7. The straight-tipped tweezers with a stop block according to claim 6, characterized in that, The limiting component (24) includes a cylinder (241), which is fixedly connected to the end of the outer surface of the sleeve (21) away from the spring piece (1). A torsion spring (242) is fixedly connected inside the cylinder (241), and a turntable (243) is fixedly connected to the outer end of the torsion spring (242). A limiting rod (244) is fixedly connected to the outer side of the turntable (243), and the outer end of the limiting rod (244) is arc-shaped. The end of the rod (244) is inserted into the arc-shaped locking hole (23). The arc-shaped locking hole (23) and the outer arc of the limiting rod (244) are both arranged in a concentric circle with the torsion spring (242). A connecting rod (245) is fixedly connected to the side of the turntable (243) near the torsion spring (242). The end of the connecting rod (245) passes through the cylinder (241) and is fixedly connected to a handle (246). Anti-slip textures are evenly spaced on the outer surface of the handle (246).

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