A water-stop clamp for medical tubing
By optimizing the clamping structure of the water-stopping clamp, making it operable with one hand and having a reasonable lever arm ratio, the problems of inconvenient operation and material waste of existing water-stopping clamps have been solved, improving the operational efficiency and resource utilization efficiency of medical staff.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU SONGDE BIOTECHNOLOGY CO LTD
- Filing Date
- 2025-08-22
- Publication Date
- 2026-07-31
AI Technical Summary
Existing medical water-stopping clamps are inconvenient to operate, requiring the use of both hands, which increases the burden of operation and consumes a lot of materials, affecting the efficiency of operation in emergency situations and the utilization of medical resources.
Design a water-stopping clamp with a one-piece molded structure, an operating lever arm to resistance arm ratio ≥2:1, and one-handed operation. The clamping part is equipped with a protruding shaft and an anti-slip grip area, and the auxiliary pressure plate extends the operating lever arm and reduces the operating force.
It enables quick, one-handed shut-off of liquid flow in pipelines, reducing operational intensity, improving operational efficiency in emergency situations, reducing material consumption, and lowering costs.
Smart Images

Figure CN224573084U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water-stop clamp technology, specifically to a water-stop clamp for medical pipelines. Background Technology
[0002] In the medical field, especially in treatment scenarios such as medical dialysis and intravenous infusion, it is often necessary to deliver fluids or drain body fluids through tubing. When it is necessary to temporarily or permanently stop the flow of fluids within the tubing during treatment, stopcocks are widely used as a key auxiliary tool, achieving the function of fluid blockage by clamping the tubing.
[0003] Currently, conventional stopcocks used in clinical practice suffer from insufficient ease of operation. Since female nurses make up a large proportion of medical staff, and the existing conventional stopcock design does not adequately consider the need for effort reduction, a significant amount of force is required during operation. This not only increases the workload for medical staff, but also easily leads to hand fatigue, especially in situations involving frequent use or prolonged work. Furthermore, the operation of conventional stopcocks often requires the use of both hands, making the procedure relatively cumbersome and affecting efficiency in emergency situations.
[0004] In addition, there is room for optimization in the structural design of existing conventional water-stop clamps in terms of material utilization. The material consumption of a single water-stop clamp is relatively large, and long-term large-scale use will lead to unnecessary cost expenditures, which is not conducive to the conservation of medical resources.
[0005] Therefore, developing a pipe sealing clamp that can be operated with one hand, is labor-saving, efficient, and lower in cost to meet the actual needs of medical staff has become an urgent problem to be solved in the field of medical auxiliary devices. Utility Model Content
[0006] To address the problems existing in current shield-shaped ovens, this invention provides a water-stop clamp for medical tubing.
[0007] The technical solution adopted by this utility model to solve its technical problem is: a water-stopping clamp for medical pipelines, comprising a clamp body, the clamp body comprising a clamping part and an operating part, the clamping part comprising an elastic clamp and protrusions located at both ends of the elastic clamp; the protrusions are located between the clamping part and the operating part, the operating part is connected to one of the protrusions, and the clamp body is provided with a limiting block that aligns with the end of the operating part; characterized in that the ratio of the length of the operating lever arm to the length of the resistance arm of the clamp body is ≥2:1.
[0008] The protrusion is an integrally formed protrusion shaft structure on the clamp body, and the axis of the protrusion shaft structure is perpendicular to the length direction of the clamp body.
[0009] The top of the operating part is provided with an anti-slip grip area, and the surface of the anti-slip grip area is provided with continuous striped texture.
[0010] The clamp is a one-piece molded structure.
[0011] The beneficial effects of this utility model are as follows:
[0012] By setting the ratio of the operating lever arm length to the resistance arm length of the clamp to ≥2:1, the force required to stop the fluid in the tubing using the clamp is only half that of a conventional clamp, effectively reducing the operational intensity for medical staff. Based on this optimized lever arm design, the clamp structure is adapted for one-handed operation, allowing medical staff to quickly complete the tubing closure action without the need for both hands, significantly accelerating the operation speed. In emergency treatment scenarios or situations requiring frequent operations, this effectively improves work efficiency and better meets clinical needs. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of the water-stop clamp in the embodiments of this application;
[0014] Figure 2 This is a schematic diagram of the waterstop clamp after it has been opened in an embodiment of this application;
[0015] Figure 3 This is a schematic diagram of the auxiliary pressure plate structure of the water-stop clamp in Embodiment 3 of this application;
[0016] Figure 4 This is a perspective view of the water-stopping clamp auxiliary pressure plate in Embodiment 3 of this application. Detailed Implementation
[0017] The present application will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can better understand and implement the present invention, but the embodiments described are not intended to limit the present invention.
[0018] Example 1: As Figure 1-2 As shown, the water-stopping clip includes a clip body 100, which adopts an integral molding structure. Specifically, it is made of medical-grade polypropylene material through injection molding process in one piece. This material has good elastic recovery properties.
[0019] The clamp 100 includes a clamping part 200 and an operating part 300 connected to each other. The clamp 100 is provided with a limiting block 102 that aligns with the end of the operating part 300. In use, the operating part 300 is pressed down, and the operating part 300 rotates around the center of the elastic clamp 201 until the end of the operating part 300 abuts against the lower end of the limiting block 102 and is limited thereto.
[0020] The clamping part 200 includes an elastic clamping body 201 and protrusions 202 located at both ends of the elastic clamping body 201. The medical tubing passes through the hole 101 on the clamping body 100 and is located between the two protrusions 202. When the operating part 300 is pressed to the lower side of the limiting block 102 and fixed, the two protrusions 202 directly contact and clamp the medical tubing.
[0021] The protrusion 202 is located between the clamping part 200 and the operating part 300. Specifically, the protrusion 202 is a protruding shaft structure integrally formed on the clamping body 100. The cross-section of the protruding shaft structure is circular, and its axis is perpendicular to the length direction of the clamping body 100.
[0022] The operating part 300 is connected to one of the protrusions 202 and has an overall elongated structure. To achieve labor-saving operation, the ratio of the operating arm length to the resistance arm length of the clamp 100 is ≥2:1, and in this embodiment, this ratio is set to 2:1. The operating arm length is defined as the straight-line distance from the end of the operating part 300 (operating end) to the axis of the protrusion 202; the resistance arm length is defined as the straight-line distance from the clamping center point of the elastic clamp 201 to the axis of the protrusion 202. This arm ratio design effectively reduces the external force required for operation, facilitating quick one-handed operation by medical personnel.
[0023] The top of the operating part 300 (i.e., the upper surface of the operating end) is provided with an anti-slip grip area 301, and the surface of the anti-slip grip area 301 is provided with continuous striped texture. This anti-slip structure can increase the friction between the fingers and the operating part 300, especially when the hands are covered with disinfectant or sweat, which can effectively prevent slippage and improve the stability of operation.
[0024] Example 2, as Figure 2 As shown, the side of the limiting block that contacts the end of the operating part 300 is obliquely recessed to form a limiting groove 103. Specifically, the limiting groove is inclined at 30° to match the rotation trajectory of the operating part 300. The rebound force of the elastic clamp 201 will press the end of the operating part tightly against the bottom of the groove, forming a "self-locking" state, which is difficult to disengage without active force.
[0025] Example 3, as Figure 3-4As shown, an auxiliary pressure plate extends along the length of one side of the operating part 300. The end of the auxiliary pressure plate extends to the outside of the clamp body, and an auxiliary pressure plate 401 is provided between the auxiliary pressure plate 400 and the clamp body. The auxiliary pressure plate 400 and the operating part 300 are integrally formed. The end of the auxiliary pressure plate 400 extends beyond the end of the operating part 300 and outwards to the outside of the clamp body 100. At the same time, the auxiliary pressure plate 401 is reserved between the auxiliary pressure plate 400 and the clamp body 100 to ensure that the auxiliary pressure plate will not rub or interfere with the clamp body 100 when it is rotated under force, thus ensuring operational flexibility. When medical personnel operate, they can press the end of the auxiliary pressure plate 400 with their fingers to further amplify the operating force using the lever principle. Compared to only pressing the operating part 300, the auxiliary pressure plate can extend the operating lever arm by about 1 / 3, further reducing the force required to open the water-stop clamp, which is especially suitable for scenarios with weak hand strength or wearing heavy gloves.
[0026] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A water stop clamp for medical tubing, characterized by, The device includes a clamping body, which comprises a clamping part and an operating part. The clamping part includes an elastic clamping body and protrusions located at both ends of the elastic clamping body. The protrusions are located between the clamping part and the operating part, and the operating part is connected to one of the protrusions. The clamping body is provided with a limiting block that aligns with the end of the operating part. The device is characterized in that the ratio of the length of the operating lever arm to the length of the resistance arm of the clamping body is ≥2:
1.
2. The water stop clamp of claim 1, wherein, The protrusion is an integrally formed protrusion shaft structure on the clamp body, and the axis of the protrusion shaft structure is perpendicular to the length direction of the clamp body.
3. The water stop clamp of claim 1, wherein, The top of the operating part is provided with an anti-slip grip area, and the surface of the anti-slip grip area is provided with continuous striped texture.
4. The water stop clamp of claim 1, wherein, The clamp is a one-piece molded structure.