A detection device for ratchet type tourniquet production

Abstract

This invention relates to the technical field of tourniquet testing, and particularly to a testing device for ratchet-type tourniquet production. In use, the tourniquet sample is wound around multiple rollers in a serpentine pattern and then pressed against the outside of one roller by a pressure plate, providing a double-limiting and locking effect to ensure stability during subsequent testing. The locking mechanism facilitates quick installation and removal of the sensor and the limiting structure containing the mounting plate. By changing the height of the two outer rollers, the tourniquet sample can be pressed against multiple angles, achieving multiple limiting and fixing effects in conjunction with the serpentine winding and the pressure plate's locking and limiting. Simultaneously, the height of the pressure plate is adaptively adjusted while changing the roller height, ensuring the tourniquet sample is always pressed against the designated roller, improving practicality.

Description

Technical Field

[0001] This invention relates to the technical field of tourniquet testing, and in particular to a testing device for the production of ratchet-type tourniquets. Background Technology

[0002] A tourniquet is a long, flat medical device made of medical polymer materials (such as natural rubber or special rubber). It blocks blood flow by compressing blood vessels near the heart in the limbs. It is mainly used for temporary hemostasis during intravenous infusion and blood drawing in medical institutions, or for emergency treatment of severe limb bleeding and bite wounds in the wild. For example, a ratchet tourniquet works by engaging the driving ratchet and the anti-retarding ratchet when the tensioning device is in the lower position. At this time, the ratchet can only rotate in one direction, tightening the tourniquet and preventing it from relaxing. When the tensioning device is in the upper position, the driving ratchet and the anti-retarding ratchet separate, allowing the ratchet to rotate in the opposite direction, thus slowly relaxing the tourniquet and achieving hemostasis. During its production, the tourniquet needs to be tested for tensile properties, thus requiring a tensile testing machine.

[0003] Currently, tensile testing devices used for testing ratchet tourniquets on the market fix the tourniquet to the testing station of the tensile testing device using clamps. Then, the distance between the two clamps is changed to test the tensile properties of the tourniquet. The clamps use a transverse compression clamping method, which can limit the tourniquet, but the contact area with the tourniquet is small. During the testing process, its position is prone to displacement, reducing the testing accuracy and leading to inaccurate test results. In related technologies, multiple protrusions are set on the inner side of the clamps, which deform after compressing the tourniquet to improve the limiting effect. However, the clamping method is still point contact clamping, which has a poor limiting effect and causes inconvenience to the testing work. Summary of the Invention

[0004] The purpose of this invention is to provide a testing device for the production of ratchet-type tourniquets, so as to solve the problems mentioned in the background art.

[0005] The technical solution adopted in this invention is: A testing device for producing ratchet-type tourniquets includes a base with a height adjustment mechanism fixedly connected to its top. An installation plate is provided inside the height adjustment mechanism. Fixed seats are provided at the top of the base and the bottom of the installation plate. A sensor is connected to the bottom of one of the fixed seats via a locking mechanism. A plate is provided on the facing surface of the sensor and the other fixed seat. A second plate is slidably connected to one side of the first plate. The second plate is connected to the first plate via a spring. A roller and a limiting block are rotatably connected to the facing surfaces of the first and second plates, respectively. One end of the limiting block is inserted into the roller. The roller is used to wind tourniquet samples. A support mechanism is fixedly connected to the first plate. A pressure plate is connected to one end of the support mechanism. After the tourniquet sample passes through multiple rollers in sequence, it is pressed against the outside of one of the rollers by the pressure plate.

[0006] Optionally, the locking mechanism consists of a cylinder, a plug, and a locking pin.

[0007] Optionally, a threaded rod is rotatably connected to one side of the plate, and a slider is slidably connected to one side of the plate. The threaded rod is threadedly connected to the slider, and the roller is rotatably connected to one side of the slider. The threaded rod is used to adjust the height of the roller.

[0008] Optionally, the plate body has sliding grooves on both sides, and an installation block is slidably connected in the sliding groove. One end of the limiting block is disposed on one side of the installation block for adjusting the height of the limiting block.

[0009] Optionally, the limiting block is rotatably connected to the mounting block.

[0010] Optionally, a spring three is provided in the slide groove, and the two ends of the spring three are fixedly connected to the mounting block and one side of the slide groove, respectively.

[0011] Optionally, the support mechanism includes a plate three fixedly connected to a plate one, a plate four slidably connected inside the plate three, a plate five fixedly connected to the side of the plate four, a pressure plate slidably connected inside the plate five, and springs two provided inside both the plate three and the plate four, so that the pressure plate is connected to the plate five through a set of springs two, and the plate four is connected to the plate three through a set of springs two.

[0012] Optionally, both the pressure plate and the plate body are T-shaped.

[0013] Optionally, a plurality of protrusions are provided on one side of the pressure plate.

[0014] Optionally, the pressure plate has an arc surface.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. When using this testing device, the tourniquet sample is passed around multiple rollers in a serpentine pattern and then pressed against the outside of one roller by a pressure plate, which plays a double limiting and locking role for the tourniquet sample and ensures the stability during subsequent testing. 2. The detection device is equipped with a locking mechanism, which facilitates the quick installation and removal of the sensor and the limiting structure where the mounting plate is located; 3. This detection device can press the tourniquet sample from multiple angles by changing the height of the two outer rollers. Combined with the serpentine winding and the pressing and limiting of the pressure plate, it achieves a multi-limiting and fixing effect. 4. This testing device adaptively adjusts the height of the pressure plate while changing the height of the roller, and can always press the tourniquet sample tightly against the outside of the designated roller, improving its practicality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is a schematic diagram of the installation location of the support mechanism in this application; Figure 3 This is a schematic diagram of the split structure of the roller body in this application; Figure 4 This is a schematic diagram of the split structure of plate two in this application; Figure 5 This is an exploded view of the supporting structure in this application.

[0018] Figure label: 10. Base; 11. Height adjustment mechanism; 12. Mounting plate; 13. Fixing base; 20. Sensors; 30. Plate body one; 31. Plate body two; 32. Roller body; 33. Spring one; 34. Limiting block; 40. Support mechanism; 41. Pressure plate; 411. Protrusion; 401. Plate Three; 402. Plate Four; 403. Plate Five; 404. Spring Two; 50. Locking mechanism; 60. Threaded rod; 61. Sliding block; 70. Slide groove; 71. Mounting block; 72. Spring 3. Detailed Implementation

[0019] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In current technologies, the tensile properties of a stretch band are tested by fixing it to the testing station of a tensile testing device using clamps and then changing the distance between the two clamps. While these clamps use a lateral compression clamping method to limit the stretch band, the contact area with the band is small, making it prone to displacement during testing, reducing testing accuracy and leading to inaccurate results. Related technologies incorporate multiple protrusions on the inner side of the clamps to deform the stretch band after compression, improving the limiting effect. However, the clamping method remains point-contact clamping, resulting in poor limiting performance and inconvenience to the testing process.

[0022] like Figure 1-5As shown, this embodiment of the invention provides a testing device for the production of ratchet-type tourniquets, including a base 10, with a height adjustment mechanism 11 fixedly connected to its top. A mounting plate 12 is provided inside the height adjustment mechanism 11. Both the top of the base 10 and the bottom of the mounting plate 12 are provided with fixed seats 13. A sensor 20 is connected to the bottom of one fixed seat 13 via a locking mechanism 50. A plate 30 is provided on the facing surfaces of the sensor 20 and the other fixed seat 13. A plate 31 is slidably connected to one side of the plate 30. The second plate 31 is connected to the first plate 30 via a spring 33. The first plate 30 and the second plate 31 are respectively rotatably connected to rollers 32 and limiting blocks 34 facing each other. One end of the limiting block 34 is inserted into the roller 32. The roller 32 is used to wind the tourniquet sample. A support mechanism 40 is fixedly connected to the first plate 30. One end of the support mechanism 40 is connected to a pressure plate 41. After the tourniquet sample passes around multiple rollers 32 in sequence, it is pressed against the outside of one roller 32 by the pressure plate 41.

[0023] After placing the base 10 in the designated position, use the locking mechanism 50 to connect the sensor 20 to the fixing seat 13 on the mounting plate 12. Then, use two more sets of locking mechanisms 50 to install the two plates 30 on the opposite ends of the sensor 20 and the other fixing seat 13, completing the installation. Next, take out the tourniquet sample to be tested for tensile strength. Pull one plate 31 outwards or directly follow an S-shaped trajectory to pass the tourniquet sample around multiple rollers 32 in sequence, then attach it to the outside of the lowest roller 32. Then, use the pressure plate 41 on the support mechanism 40 to press one end of the tourniquet sample against the outside of the designated roller 32, thus limiting the position of one end of the tourniquet sample. Repeat the above steps to... The other end of the tourniquet sample is fixed to the outside of another roller 32 to complete the sample placement. Then, the motor in the height adjustment mechanism 11 is turned on, and the height of the mounting plate 12 is adjusted by means of a lead screw and slide block. At the same time, it pulls a fixed seat 13 upward to slide. During the sliding process, the distance between the two plates 30 is changed. Since the two ends of the tourniquet sample are fixed on the roller 32 on the inner side of the two plates 30 respectively, the two plates 30 slide towards the back while the tourniquet sample is stretched. The data generated during the test is transmitted and recorded in real time by the sensor 20. After the test is completed, the two ends of the tourniquet sample can be removed.

[0024] Furthermore, the locking mechanism 50 consists of a cylinder, a plug, and a locking pin. The cylinder and the plug are fixed to the two structures that need to be connected, and then the plug is inserted into the cylinder. The connection and installation are achieved by the locking pin penetrating through the plug and the cylinder.

[0025] Furthermore, a threaded rod 60 is rotatably connected to the plate 30, and a slider 61 is slidably connected to the side of the plate 30. The threaded rod 60 is threadedly connected to the slider 61, and the roller 32 is rotatably connected to one side of the slider 61. The threaded rod 60 is used to adjust the height of the roller 32. After limiting the tourniquet sample, the threaded rod 60 is rotated so that it rotates within the plate 30. At the same time, through the threaded connection with the slider 61, the two sliders 61 on the same side slide towards the opposite face. This causes the two outer rollers 32 to squeeze the tourniquet sample from the upper and lower angles to the outside of the middle roller 32, which, together with the subsequent pressing of the pressure plate 41, achieves a double limiting effect.

[0026] Specifically, while rotating the threaded rod 60, the tourniquet sample is pulled to reduce the wrinkles generated when the two outer rollers 32 come close to each other, thereby improving the accuracy of subsequent testing.

[0027] Furthermore, a sliding groove 70 is provided on the side of the second plate 31, and an installation block 71 is slidably connected in the sliding groove 70. One end of the limiting block 34 is disposed on one side of the installation block 71 and is used to adjust the height of the limiting block 34. This allows the operator to adjust the position of the roller 32 while simultaneously driving the limiting block 34 and the installation block 71 to slide synchronously in the sliding groove 70, ensuring that the limiting block 34 always provides support for the roller 32 and guarantees stability.

[0028] Furthermore, the limiting block 34 is rotatably connected to the mounting block 71, so that the limiting block 34 can rotate with the roller body 32, thereby reducing friction between the limiting block 34 and the tourniquet sample.

[0029] Furthermore, a spring 72 is provided in the slide groove 70. The two ends of the spring 72 are fixedly connected to the mounting block 71 and one side of the slide groove 70, respectively. After the test is completed, the spring 72 pushes the mounting block 71 and the limiting block 34 to reset through the rebound force of the spring 72, which facilitates subsequent testing.

[0030] Furthermore, the support mechanism 40 includes a third plate 401, which is fixedly connected to the first plate 30. A fourth plate 402 is slidably connected inside the third plate 401. A fifth plate 403 is fixedly connected to the side of the fourth plate 402. A pressure plate 41 is slidably connected inside the fifth plate 403. A second spring 404 is provided inside both the third plate 401 and the fourth plate 402, so that the pressure plate 41 is connected to the fifth plate 403 through a set of second springs 404, and the fourth plate 402 is connected to the third plate 401 through a set of second springs 404.

[0031] When placing the tourniquet sample, first push the pressure plate 41 to slide it away from the roller 32. After the tourniquet sample is wound, place one end between the pressure plate 41 and the designated roller 32. Then, through the rebound force of the second spring 404, the pressure plate 41 slides out from the fifth plate 403 and presses the tourniquet sample. Subsequently, when the height of the roller 32 is adjusted by rotating the threaded rod 60, the roller 41, the fifth plate 403 and the fourth plate 402 slide upward, and pull the second spring 404 in the third plate 401, so that the height of the pressure plate 41 can be adaptively adjusted with the height of the roller 32, improving practicality.

[0032] Furthermore, both the pressure plate 41 and the plate body 402 are T-shaped to prevent the pressure plate 41 from separating from the plate body 403, and also to prevent the plate body 402 from separating from the plate body 401.

[0033] Furthermore, a plurality of protrusions 411 are provided on one side of the pressure plate 41. The protrusions 411 directly contact the tourniquet sample and deform the surface of the tourniquet sample by squeezing, thereby improving the limiting effect.

[0034] Furthermore, the pressure plate 41 has an arc surface, which allows the pressure plate 41 to press the tourniquet sample in an arc shape on the outside of the roller body 32, thereby improving the limiting effect.

[0035] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A testing device for the production of ratchet-type tourniquets, characterized in that, Includes a base (10), the top of which is fixedly connected to a height adjustment mechanism (11). The height adjustment mechanism (11) is provided with an installation plate (12) on its inner side. The top of the base (10) and the bottom of the installation plate (12) are both provided with fixed seats (13). The bottom of one of the fixed seats (13) is connected to a sensor (20) through a locking mechanism (50). The bottom end of the sensor (20) and the facing surface of the other fixed seat (13) are both provided with a plate body (30). A plate body (31) is slidably connected to one side of the plate body (30). The plate body (31) is connected to a spring (33) through a spring (33). The first plate (30) is connected to the first plate (30). The first plate (30) and the second plate (31) are respectively rotatably connected to the roller (32) and the limiting block (34). One end of the limiting block (34) is inserted into the roller (32). The roller (32) is used to wind the tourniquet sample. The first plate (30) is fixedly connected to the support mechanism (40). One end of the support mechanism (40) is connected to the pressure plate (41). After the tourniquet sample passes around multiple rollers (32) in sequence, it is pressed against the outside of one roller (32) by the pressure plate (41).

2. The testing device for ratchet-type tourniquet production according to claim 1, characterized in that, The locking mechanism (50) consists of a cylinder, a plug, and a locking pin.

3. The testing device for producing ratchet-type tourniquets according to claim 1, characterized in that, A threaded rod (60) is rotatably connected to the plate (30), and a slider (61) is slidably connected to the side of the plate (30). The threaded rod (60) is threadedly connected to the slider (61), and the roller (32) is rotatably connected to one side of the slider (61). The threaded rod (60) is used to adjust the height of the roller (32).

4. The testing device for producing ratchet-type tourniquets according to claim 3, characterized in that, The second plate (31) has a sliding groove (70) on its side, and an installation block (71) is slidably connected in the sliding groove (70). One end of the limiting block (34) is set on one side of the installation block (71) to adjust the height of the limiting block (34).

5. The testing device for producing ratchet-type tourniquets according to claim 4, characterized in that, The limiting block (34) is rotatably connected to the mounting block (71).

6. The testing device for producing ratchet-type tourniquets according to claim 4, characterized in that, The slide groove (70) is provided with a spring three (72), and the two ends of the spring three (72) are fixedly connected to the mounting block (71) and one side of the slide groove (70), respectively.

7. The testing device for producing ratchet-type tourniquets according to claim 3, characterized in that, The support mechanism (40) includes a plate three (401) fixedly connected to the plate one (30), a plate four (402) slidably connected inside the plate three (401), a plate five (403) fixedly connected to the side of the plate four (402), a pressure plate (41) slidably connected inside the plate five (403), and a spring two (404) provided inside both the plate three (401) and the plate four (402), so that the pressure plate (41) is connected to the plate five (403) through a set of spring two (404), and the plate four (402) is connected to the plate three (401) through a set of spring two (404).

8. A testing device for the production of ratchet-type tourniquets according to claim 7, characterized in that, Both the pressure plate (41) and the plate body (402) are T-shaped.

9. A testing device for the production of ratchet-type tourniquets according to claim 7, characterized in that, The pressure plate (41) has multiple protrusions (411) on one side.

10. A testing device for the production of ratchet-type tourniquets according to claim 9, characterized in that, The pressure plate (41) has an arc surface.

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