Detection tool for tensile property of medical film material

Abstract

The utility model relates to a tool for detecting the tensile property of a medical film material, and relates to the technical field of equipment for detecting the mechanical property of a biomedical material. The detection tool for the tensile property of the medical film material comprises a mounting frame, a tension component, and an upper clamp component and a lower clamp component which are respectively used for clamping two ends of the medical film material, the upper clamp assembly and the lower clamp assembly are each provided with a fixed clamping strip and a movable clamping strip, the movable clamping strips can slide, and the opposite side faces of the fixed clamping strips and the movable clamping strips are provided with clamping planes. And a display screen for timing and timing is also arranged on the mounting frame. The tool can stably clamp the medical film material for tensile property detection, is stable and reliable, is not liable to damage the medical film material, can accurately time and time, and improves the use convenience of the tool.

Description

Technical Field

[0001] This application relates to the field of testing equipment for the mechanical properties of biomedical materials, and in particular to a testing fixture for the tensile properties of medical membrane materials. Background Technology

[0002] Mechanical property testing of medical membrane materials is currently a crucial step in ensuring their safety for clinical application. For example, collagen sponges, as a basic material for medical products such as wound dressings and tissue engineering scaffolds, have tensile properties that directly affect the reliability of these products.

[0003] Traditional testing techniques often involve clamping one end of a medical membrane material with a tensile tester, while the other end is connected to a weight using a simple clamp and connecting rope to apply tension to the membrane material. The tensile strength of the membrane material is then determined by testing whether it breaks under a certain tension for a certain period of time. This process requires manual timing, the test results are not accurate enough, and it is inconvenient to use.

[0004] Currently, the industry is widely adopting electronic tensile testing machines to test the tensile properties of medical membrane materials. However, for these delicate thin-film samples, the current fixtures can easily damage the samples during tensile testing. Furthermore, with the increasing standards for medical materials, higher demands are being placed on the accuracy and automation of testing equipment, and current testing equipment is no longer sufficient to meet standardized testing requirements. Utility Model Content

[0005] To improve the accuracy and convenience of testing the tensile properties of medical membrane materials, this application provides a testing fixture for the tensile properties of medical membrane materials.

[0006] The testing fixture for the tensile properties of medical membrane materials provided in this application adopts the following technical solution:

[0007] A testing fixture for the tensile properties of medical membrane materials includes a mounting frame, a tensile component, and an upper clamping assembly and a lower clamping assembly for clamping the two ends of the medical membrane material, respectively.

[0008] The upper clamping assembly includes a first mounting base fixed to the mounting frame and a first fixed clamping bar and a first movable clamping bar horizontally disposed on the first mounting base; the first fixed clamping bar and the first movable clamping bar are disposed opposite to each other and each of their opposite sides has a first clamping plane, the first fixed clamping bar is fixed to the first mounting base, and the first movable clamping bar is slidably disposed on the first mounting base;

[0009] The tension component is connected to the lower clamping assembly; the lower clamping assembly includes a second mounting base and a second fixed clamping bar and a second movable clamping bar arranged laterally on the second mounting base; the second fixed clamping bar and the second movable clamping bar are arranged opposite to each other and each of their opposite sides has a second clamping plane; the second fixed clamping bar is fixed on the second mounting base, and the second movable clamping bar is slidably arranged on the second mounting base;

[0010] The mounting bracket is also equipped with a display screen for timing and timekeeping.

[0011] By adopting the above technical solution, the fixed and movable clamping bars of the upper and lower clamping components in this application cooperate to stably clamp both ends of the medical membrane material. The display screen on the mounting frame allows for timing and recording, enabling automatic recording and precise control of the testing time, improving testing accuracy and reliability, and avoiding the tediousness and errors of manual timing. This application optimizes the clamping mechanism, making the contact areas between the upper and lower clamping components and the medical membrane material planar with a large contact area, preventing damage to the medical membrane material due to sharp edges or corners, and improving the stability and reliability of clamping the medical membrane material.

[0012] Optionally, the first fixed clamping bar, the first movable clamping bar, the second fixed clamping bar, and the second movable clamping bar are made of plastic or lightweight alloy material; silicone pads are provided on both the first clamping plane and the second clamping plane, and several grooves are formed on the outer side of the silicone pads.

[0013] By adopting the above technical solution, using plastic or lightweight alloy materials to make the clamping strip can avoid the influence of the clamping strip's weight on the test results when gravity is applied. Setting silicone pads with grooves on the first and second clamping planes avoids sharp edges or points in contact with medical membrane materials, ensuring accurate test results. Simultaneously, the flexible silicone pads provide better protection for the medical membrane materials. By creating several grooves on the outer surface of the silicone pads, the friction between the silicone pads and the medical membrane materials is increased, preventing relative slippage and thus improving the stability and reliability of the clamp's gripping of the medical membrane materials.

[0014] Optionally, the tension assembly includes several weights detachably connected to the second mounting base; the weights are screwed or snapped onto the bottom of the second mounting base.

[0015] The principle of tensile performance testing for medical membrane materials in this application is to suspend a tensile component below the medical membrane material. If the medical membrane material remains intact for a period of time without breaking, it is judged to meet the testing standards. The lower clamp component is made of lightweight materials as much as possible, and its weight serves as the basic tensile force for testing the tensile performance of the medical membrane material, without affecting the testing results. By adopting the above technical solution, the weights are detachably connected to the second mounting base, allowing the number of weights to be increased or decreased as needed, thereby controlling the magnitude of the tensile force. This achieves flexible adjustment of the tensile force, meeting the testing requirements of different tensile standards, while avoiding the possibility of swaying caused by rope connections, thus improving the accuracy and reliability of the test.

[0016] Optionally, a first fixed seat is fixedly provided at one end of the bottom surface of the first mounting base, the first fixed clamping bar is fixedly provided on the first fixed seat, a first slide rail is provided on the bottom surface of the first mounting base along the length direction of the first mounting base, a first sliding seat is slidably connected on the first slide rail, and the first movable clamping bar is fixedly provided on the first sliding seat; a first lead screw is rotatably connected to the first fixed seat, the axial direction of the first lead screw is consistent with the length direction of the first slide rail, and one end of the first lead screw is screwed to the first sliding seat;

[0017] A second fixed seat is fixedly provided at one end of the upper side of the second mounting base, and the second fixed clamping bar is fixedly provided on the second fixed seat. A second slide rail is provided on the upper side of the second mounting base along the length direction of the second mounting base. A second sliding seat is slidably connected to the second slide rail, and the second movable clamping bar is fixedly provided on the second sliding seat. A second lead screw is rotatably connected to the second fixed seat. The axial direction of the second lead screw is consistent with the length direction of the second slide rail, and one end of the second lead screw is screwed to the second sliding seat.

[0018] By adopting the above technical solution, the first fixed seat and the first slide rail of the first mounting base cooperate, and the rotation of the first lead screw drives the first sliding seat to slide on the first slide rail, which can accurately adjust the distance between the first moving clamping strip and the first fixed clamping strip. Similarly, the second fixed seat, the second slide rail and the second lead screw of the second mounting base cooperate to accurately adjust the distance between the second moving clamping strip and the second fixed clamping strip, so as to achieve stable and reliable clamping of both ends of medical membrane materials, improve the stability of the sample during the detection process, and thus improve the accuracy and reliability of the detection; at the same time, it avoids detection errors caused by unstable clamping and ensures the accuracy of the detection results.

[0019] Optionally, the tension assembly includes a vertically arranged lifting drive and a lifting plate disposed on the output shaft of the lifting drive. A tension sensor is disposed on the lifting plate, and the lower clamp assembly is disposed on the tension sensor.

[0020] By adopting the above technical solution, the tension component uses a lifting drive and a lifting plate, which can achieve precise control of the tension. Combined with the tension sensor, it can accurately measure the tension applied to medical membrane materials, meet the standardized tension control requirements, and improve the accuracy and reliability of the detection.

[0021] Optionally, the mounting frame includes a base plate, a top plate, and a side plate fixed to the base plate and the top plate. The lifting drive is fixed to the base plate and is vertically upward. The upper clamp assembly is fixed to the lower side of the top plate. A vertical guide groove is provided on the side plate. One side of the lifting plate has a guide rod, and the outer end of the guide rod is slidably inserted into the guide groove.

[0022] By adopting the above technical solution, the mounting frame is composed of a base plate, a top plate, and side plates fixedly connected to provide stable support for the device; the lifting drive component is fixed on the base plate and faces vertically upward, which can stably apply tension to the lower clamping assembly; the upper clamping assembly is fixed on the lower side of the top plate to ensure stable clamping of both ends of the medical membrane material; the guide groove on the side plate cooperates with the guide rod on one side of the lifting plate to make the lifting of the lifting plate more stable, thereby ensuring the stability and accuracy of the applied tension, and improving the accuracy and reliability of the detection.

[0023] Optionally, a first fixed seat is fixedly provided at one end of the bottom surface of the first mounting base, the first fixed clamping bar is fixedly provided on the first fixed seat, a first sliding seat is slidably connected to the bottom surface of the first mounting base, and the first movable clamping bar is fixedly provided on the first sliding seat; a first lead screw and a first drive motor for driving the first lead screw to rotate are rotatably connected to the first mounting base, and the end of the first lead screw away from the first drive motor is screwed to the first sliding seat;

[0024] A second fixed seat is fixedly provided at one end of the upper side of the second mounting base, the second fixed clamping bar is fixedly provided on the second fixed seat, a second sliding seat is slidably connected to the upper side of the second mounting base, and the second movable clamping bar is fixedly provided on the second sliding seat; a second lead screw and a second drive motor for driving the second lead screw to rotate are rotatably connected to the second fixed seat, and one end of the second lead screw is screwed to the second sliding seat.

[0025] By adopting the above technical solution, the first drive motor drives the first lead screw to rotate, causing the first sliding seat to slide on the bottom surface of the first mounting base, so that the first movable clamping bar moves closer to or away from the first fixed clamping bar, thereby automatically clamping or releasing one end of the medical membrane material; the second drive motor drives the second lead screw to rotate, causing the second sliding seat to slide on the upper side of the second mounting base, so that the second movable clamping bar moves closer to or away from the second fixed clamping bar, thereby automatically clamping or releasing the other end of the medical membrane material. This improves the convenience and efficiency of operation, while ensuring the stability and consistency of the clamping force, which helps to improve the accuracy of the test results.

[0026] Optionally, pressure sensors are provided on the opposite sides of the first fixed clamping bar, the first movable clamping bar, the second fixed clamping bar, and the second movable clamping bar.

[0027] By adopting the above technical solution, the pressure sensor can accurately detect the pressure when clamping medical membrane materials, further ensuring precise control of pressure during the testing process and guaranteeing the accuracy of the test results.

[0028] Optionally, a left cover and a right cover are respectively provided on the left and right sides of the mounting frame. A mounting plate is provided on the back side of the mounting frame. A transverse third lead screw and a third drive motor for driving the third lead screw to rotate forward and backward are provided on the back side of the mounting plate. The third lead screw is divided into two threaded sections with opposite helical directions in the middle. The mounting plate has a transverse strip-shaped through hole. A first connecting block is connected to the left cover, passing through the strip-shaped through hole and screwed to the third lead screw. A second connecting block is connected to the right cover, passing through the strip-shaped through hole and screwed to the third lead screw.

[0029] By adopting the above technical solution, a left cover and a right cover are set on the left and right sides of the mounting frame. With the third lead screw and the third drive motor on the back side of the mounting plate, the two threaded sections of the third lead screw with opposite helical directions are screwed to the connecting blocks of the left and right covers, which can realize the opening and closing of the left and right covers. This can play a protective role during the test, avoid external factors from interfering with the test, and improve the stability and reliability of the test.

[0030] Optionally, the testing fixture for the tensile properties of the medical membrane material further includes a controller. A control keyboard is provided on the left and / or right cover, and an alarm is provided on the mounting bracket. The control keyboard, alarm, pressure sensor, tension sensor, and display screen are all electrically connected to the controller.

[0031] By adopting the above technical solutions, the control keyboard allows operators to easily input control commands, the controller can process and analyze the data from the pressure sensor and tension sensor, the display screen can display the detection data and time in real time, and the alarm can sound an alarm when the detection data is abnormal or when the set time is reached, thereby realizing automated control and abnormal alarm of the detection process, improving the accuracy and reliability of detection, and reducing human error.

[0032] In summary, this application includes at least one of the following beneficial technical effects:

[0033] 1. In this application, the upper clamping assembly and the lower clamping assembly both have clamping planes on their opposite sides, which avoids the presence of sharp edges or corners in the contact area with the medical membrane material, and has a large contact area with the medical membrane material, reducing the possibility of damaging the medical membrane material, and improving the stability and reliability of clamping the medical membrane material while avoiding sample damage.

[0034] 2. The standardization of fixture design in this application improves the accuracy and reliability of testing.

[0035] 3. In this application, time is automatically recorded by an electronic timer, which reduces human error and ensures accurate test results. Attached Figure Description

[0036] Figure 1 This is a three-dimensional structural diagram of the tooling in Embodiment 1 of this application.

[0037] Figure 2 This is a three-dimensional structural diagram of the upper clamp assembly in Embodiment 1 of this application.

[0038] Figure 3 This is a three-dimensional structural diagram of the lower clamp assembly and the tension assembly in Embodiment 1 of this application.

[0039] Figure 4 This is a three-dimensional structural diagram of the tooling in Embodiment 2 of this application.

[0040] Figure 5 This is a schematic diagram of the internal structure of the tooling in Embodiment 2 of this application.

[0041] Figure 6 This is a three-dimensional structural diagram of the upper clamping assembly in Embodiment 2 of this application.

[0042] Figure 7 This is a three-dimensional structural diagram of the lower clamp assembly and the tension sensor in Embodiment 2 of this application.

[0043] Figure 8 This is another three-dimensional structural schematic diagram of the tooling in Embodiment 2 of this application.

[0044] Figure 9This is a block diagram of the electrical control structure of the tooling in Embodiment 2 of this application.

[0045] In the picture:

[0046] 10. Mounting bracket; 11. Base plate; 12. Top plate; 13. Side plate; 131. Guide groove;

[0047] 20. Tension assembly; 21. Weight; 211. Threaded rod; 22. Lifting drive component; 23. Lifting plate; 231. Guide rod; 24. Tension sensor;

[0048] 30. Upper clamping assembly; 31. First mounting base; 311. First slide rail; 32. First fixed clamping bar; 33. First movable clamping bar; 34. First clamping plane; 35. First fixed base; 36. First sliding base; 37. First lead screw; 38. First drive motor;

[0049] 40. Lower clamp assembly; 41. Second mounting base; 411. Second slide rail; 412. Threaded hole; 42. Second fixed clamping bar; 43. Second movable clamping bar; 44. Second clamping plane; 45. Second fixed base; 46. Second sliding base; 47. Second lead screw; 48. Second drive motor;

[0050] 50. Display screen;

[0051] 60. Silicone pad; 61. Groove;

[0052] 70. Pressure sensor;

[0053] 80. Cover assembly; 81. Left cover; 811. First connecting block; 82. Right cover; 821. Second connecting block; 83. Mounting plate; 831. Strip-shaped through hole; 84. Third lead screw; 85. Third drive motor;

[0054] 90. Controller; 91. Control keyboard; 92. Alarm. Detailed Implementation

[0055] The following will be combined with the appendix Figure 1 - Appendix Figure 9 The technical solutions in the embodiments of this utility model are clearly and completely described herein. The described embodiments are only possible technical implementations of this utility model and not all possible implementations. Those skilled in the art can obtain other embodiments in conjunction with the embodiments of this utility model without creative effort, and these embodiments are also within the protection scope of this utility model.

[0056] Example 1

[0057] Reference Figure 1 , Figure 2 and Figure 3As shown, the testing fixture for the tensile properties of medical membrane materials in this application includes a mounting frame 10, a tensile component 20, and an upper clamping assembly 30 and a lower clamping assembly 40 for clamping both ends of the medical membrane material. The mounting frame 10 includes a base plate 11, a top plate 12, and a side plate 13 that connects the base plate 11 and the top plate 12. The side plate 13 is vertically arranged, with its lower end fixed to one side of the base plate 11 and its upper end fixed to one side of the top plate 12. A display screen 50 is provided on the upper side of the top plate 12, and the display screen 50 has functions such as timing, timer, counting, and alarm. The upper clamping assembly 30 is fixed to the lower side of the top plate 12 and is used to clamp the upper end of the medical membrane material when in use. The lower clamping assembly 40 can be freely placed and is usually placed on the base plate 11 when not in use; it is used to clamp the lower end of the medical membrane material when in use.

[0058] Reference Figure 2 As shown, the upper clamping assembly 30 includes a first mounting base 31 fixed to the mounting frame 10, and a first fixed clamping bar 32 and a first movable clamping bar 33 arranged laterally on the first mounting base 31; the first fixed clamping bar 32 and the first movable clamping bar 33 are arranged opposite to each other and each of their opposite sides has a first clamping plane 34. The first fixed clamping bar 32 is fixed to the first mounting base 31, and the first movable clamping bar 33 is slidably arranged on the first mounting base 31. Furthermore, a first fixed seat 35 is fixedly provided at one end of the bottom surface of the first mounting base 31, and a first fixed clamping bar 32 is fixedly provided on the first fixed seat 35. A first slide rail 311 along the length direction of the first mounting base 31 is provided on the bottom surface of the first mounting base 31. A first sliding seat 36 is slidably connected to the first slide rail 311, and a first movable clamping bar 33 is fixedly provided on the first sliding seat 36. A first lead screw 37 is rotatably connected to the first fixed seat 35. The axial direction of the first lead screw 37 is consistent with the length direction of the first slide rail 311, and one end of the first lead screw 37 is screwed to the first sliding seat 36.

[0059] Refer to 1 and Figure 3As shown, the tension assembly 20 is connected to the lower clamp assembly 40; the lower clamp assembly 40 includes a second mounting base 41 and a second fixed clamping bar 42 and a second movable clamping bar 43 laterally arranged on the second mounting base 41; the second fixed clamping bar 42 and the second movable clamping bar 43 are arranged opposite to each other and each of their opposite sides has a second clamping plane 44, the second fixed clamping bar 42 is fixed on the second mounting base 41, and the second movable clamping bar 43 is slidably arranged on the second mounting base 41; furthermore, one end of the upper side of the second mounting base 41 is fixed A second fixed seat 45 is provided, and a second fixed clamping bar 42 is fixedly mounted on the second fixed seat 45. A second slide rail 411 along the length direction of the second mounting seat 41 is provided on the upper side of the second mounting seat 41. A second sliding seat 46 is slidably connected to the second slide rail 411, and a second movable clamping bar 43 is fixedly mounted on the second sliding seat 46. A second lead screw 47 is rotatably connected to the second fixed seat 45. The axial direction of the second lead screw 47 is consistent with the length direction of the second slide rail 411, and one end of the second lead screw 47 is screwed to the second sliding seat 46. The tension assembly 20 includes several weights 21 detachably connected to the second mounting base 41; the weights 21 are screwed or snapped onto the bottom of the second mounting base 41; specifically, preferably, in this embodiment, the second mounting base 41 is provided with several threaded holes 412, and the upper end of the weight 21 is provided with a threaded rod 211. The threaded rod 211 on the weight 21 matches the threaded hole 412 on the second mounting base 41, and the weight 21 is detachably connected to the lower clamp assembly 40 through the cooperation of the threaded rod 211 and the threaded hole 412.

[0060] The first fixed clamping bar 32, the first movable clamping bar 33, the second fixed clamping bar 42, and the second movable clamping bar 43 are made of plastic or lightweight alloy materials; this avoids the influence of the weight of the clamping bars on the test results when gravity is applied; refer to 2 and Figure 3 As shown, silicone pads 60 are provided on both the first clamping plane 34 and the second clamping plane 44 in this application. This avoids sharp edges or points in contact with the medical membrane material, ensuring accurate test results. Simultaneously, the flexible silicone pads 60 provide better protection for the medical membrane material. Several grooves 61 are formed on the outer surface of the silicone pads 60, which increases the friction between the silicone pads 60 and the medical membrane material, preventing slippage and thus improving the stability and reliability of the clamp in holding the medical membrane material.

[0061] The implementation principle is as follows: The principle for testing the tensile strength of medical membrane materials in this application is to suspend the tensile component 20 below the medical membrane material. If the collagen sponge protein remains intact for a period of time without breaking, it is determined that the material meets the testing standards. The weights 21 are detachably connected to the second mounting base 41. The number of weights 21 can be increased or decreased as needed to control the magnitude of the tensile force, achieving flexible adjustment of the tensile force to meet the testing requirements of different tensile strength standards. This also avoids the possibility of swaying caused by using rope connections, improving the accuracy and reliability of the test.

[0062] In this application, the first fixed seat 35 and the first slide rail 311 of the first mounting base 31 cooperate, and the first lead screw 37 rotates to drive the first sliding seat 36 to slide on the first slide rail 311, which can accurately adjust the distance between the first moving clamping bar 33 and the first fixed clamping bar 32. Similarly, the second fixed seat 45, the second slide rail 411 and the second lead screw 47 of the second mounting base 41 cooperate to accurately adjust the distance between the second moving clamping bar 43 and the second fixed clamping bar 42. The fixed clamping bar and the moving clamping bar of the upper clamping assembly 30 and the lower clamping assembly 40 cooperate to stably clamp both ends of the medical membrane material. The display screen 50 on the mounting frame 10 can perform timing and timer, realize the automatic recording and precise control of the detection time, improve the detection accuracy and reliability, and avoid the tediousness and error of manual timing. In this application, the clamps have been optimized and modified so that the parts of the upper clamp assembly 30 and the lower clamp assembly 40 that contact the medical membrane material become flat and have a large contact area with the medical membrane material. This prevents damage to the medical membrane material due to sharp edges or corners, and improves the stability and reliability of clamping the medical membrane material.

[0063] Example 2

[0064] This embodiment is largely the same as Embodiment 1, except that the testing fixture for the tensile properties of medical membrane materials has been further improved in this embodiment, enhancing its automation and accuracy; specifically, referring to... Figure 4 and Figure 5 As shown, in this embodiment, the tension assembly 20 includes a vertically arranged lifting drive 22 and a lifting plate 23 disposed on the output shaft of the lifting drive 22. The lifting drive 22 can be a hydraulic cylinder or a pneumatic cylinder. A tension sensor 24 is disposed on the lifting plate 23, and the lower clamp assembly 40 is disposed on the tension sensor 24. The tension assembly 20, using the lifting drive 22 and the lifting plate 23, can achieve precise control of the tension. Combined with the tension sensor 24, it can accurately measure the tension applied to medical membrane materials, meet the standardized tension control requirements, and improve the accuracy and reliability of the detection.

[0065] Reference Figure 5As shown, in this embodiment, the mounting frame 10 includes a base plate 11, a top plate 12, and a side plate 13 that connects the base plate 11 and the top plate 12. A lifting drive component 22 is fixed to the base plate 11 and vertically upwards, while an upper clamp assembly 30 is fixed to the lower side of the top plate 12. A vertical guide groove 131 is provided on the side plate 13. A guide rod 231 is located on one side of the lifting plate 23, and the outer end of the guide rod 231 is slidably inserted into the guide groove 131. The guide groove 131 on the side plate 13 cooperates with the guide rod 231 on one side of the lifting plate 23, making the lifting of the lifting plate 23 more stable, thereby ensuring the stability and accuracy of the applied tension and improving the precision and reliability of the detection.

[0066] Reference Figure 6 and Figure 7 As shown, in this embodiment, a first fixed seat 35 is fixedly provided at one end of the bottom surface of the first mounting base 31, and a first fixed clamping bar 32 is fixedly provided on the first fixed seat 35. A first sliding seat 36 is slidably connected to the bottom surface of the first mounting base 31, and a first movable clamping bar 33 is fixedly provided on the first sliding seat 36. A first lead screw 37 and a first drive motor 38 for driving the first lead screw 37 to rotate are rotatably connected to the first mounting base 31. The end of the first lead screw 37 away from the first drive motor 38 is screwed to the first sliding seat 36. A second fixed seat 45 is fixedly provided at one end of the upper side surface of the second mounting base 41, and a second fixed clamping bar 42 is fixedly provided on the second fixed seat 45. A second sliding seat 46 is slidably connected to the upper side surface of the second mounting base 41, and a second movable clamping bar 43 is fixedly provided on the second sliding seat 46. A second lead screw 47 and a second drive motor 48 for driving the second lead screw 47 to rotate are rotatably connected to the second fixed seat 45. One end of the second lead screw 47 is screwed to the second sliding seat 46. The first drive motor 38 drives the first lead screw 37 to rotate, causing the first sliding seat 36 to slide on the bottom surface of the first mounting base 31, so that the first moving clamping bar 33 moves closer to or away from the first fixed clamping bar 32, thereby automatically clamping or releasing one end of the medical membrane material. The second drive motor 48 drives the second lead screw 47 to rotate, causing the second sliding seat 46 to slide on the upper side of the second mounting base 41, so that the second moving clamping bar 43 moves closer to or away from the second fixed clamping bar 42, thereby automatically clamping or releasing the other end of the medical membrane material. This improves the convenience and efficiency of operation, while ensuring the stability and consistency of the clamping force, which helps to improve the accuracy of the test results.

[0067] Reference Figure 4 and Figure 8As shown, a cover assembly 80 is also provided around the mounting frame 10. The cover assembly 80 includes a left cover 81 and a right cover 82 provided on the left and right sides of the mounting frame 10, and a mounting plate 83 provided on the back side of the mounting frame 10. A transverse third lead screw 84 and a third drive motor 85 for driving the third lead screw 84 to rotate forward and backward are provided on the back side of the mounting plate 83. The third lead screw 84 is divided into two threaded sections with opposite helical directions in the middle. The mounting plate 83 has a transverse strip-shaped through hole 831. A first connecting block 811 is connected to the left cover 81, which passes through the strip-shaped through hole 831 and is screwed to the third lead screw 84. A second connecting block 821 is connected to the right cover 82, which passes through the strip-shaped through hole 831 and is screwed to the third lead screw 84. A left cover 81 and a right cover 82 are provided on the left and right sides of the mounting frame 10. They are used in conjunction with the third lead screw 84 and the third drive motor 85 on the back side of the mounting plate 83. The two threaded sections of the third lead screw 84 with opposite helical directions are screwed to the connecting blocks of the left and right covers 82, which can realize the opening and closing of the left and right covers 82. This can play a protective role during the test, avoid external factors from interfering with the test, and improve the stability and reliability of the test.

[0068] Furthermore, refer to Figure 4 and Figure 9 As shown, the testing fixture for the tensile properties of medical membrane materials in this application also includes a controller 90. A control keyboard 91 is mounted on the left cover 81 and / or the right cover 82. An alarm 92 is mounted on the mounting bracket 10. Pressure sensors 70 are mounted on the opposite sides of the first fixed clamping bar 32, the first movable clamping bar 33, the second fixed clamping bar 42, and the second movable clamping bar 43. The control keyboard 91, alarm 92, pressure sensors 70, tension sensor 24, and display screen 50 are all electrically connected to the controller 90. The control keyboard 91 allows operators to easily input control commands, and the pressure sensors 70 accurately detect the pressure when clamping the medical membrane material, further ensuring precise pressure control during the testing process and guaranteeing the accuracy of the test results. The controller 90 can process and analyze the data from the pressure sensor 70 and the tension sensor 24. The display screen 50 can display the detection data and time in real time. The alarm 92 can issue an alarm when the detection data is abnormal or when the set time is reached, so as to realize the automated control and abnormal alarm of the detection process, improve the accuracy and reliability of detection, and reduce human error.

[0069] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A testing fixture for the tensile properties of medical membrane materials, comprising a mounting frame (10), a tensile component (20), and an upper clamping assembly (30) and a lower clamping assembly (40) for clamping the two ends of the medical membrane material, respectively; Its features are, The upper clamp assembly (30) includes a first mounting base (31) fixedly connected to the mounting frame (10) and a first fixed clamping bar (32) and a first movable clamping bar (33) horizontally arranged on the first mounting base (31); the first fixed clamping bar (32) and the first movable clamping bar (33) are arranged opposite to each other and each of their opposite sides has a first clamping plane (34); the first fixed clamping bar (32) is fixed on the first mounting base (31) and the first movable clamping bar (33) is slidably arranged on the first mounting base (31); The tension assembly (20) is connected to the lower clamp assembly (40); the lower clamp assembly (40) includes a second mounting base (41) and a second fixed clamping bar (42) and a second movable clamping bar (43) arranged laterally on the second mounting base (41); the second fixed clamping bar (42) and the second movable clamping bar (43) are arranged opposite to each other and each of them has a second clamping plane (44) on its opposite side; the second fixed clamping bar (42) is fixed on the second mounting base (41) and the second movable clamping bar (43) is slidably arranged on the second mounting base (41); The mounting bracket (10) is also equipped with a display screen (50) for timing and timekeeping.

2. The testing fixture for the tensile properties of medical membrane materials according to claim 1, characterized in that, The first fixed clamping bar (32), the first movable clamping bar (33), the second fixed clamping bar (42) and the second movable clamping bar (43) are made of plastic or lightweight alloy material; silicone pads (60) are provided on the first clamping plane (34) and the second clamping plane (44), and several grooves (61) are opened on the outer side of the silicone pads (60).

3. The testing fixture for the tensile properties of medical membrane materials according to claim 1 or 2, characterized in that, The tension assembly (20) includes several weights (21) detachably connected to the second mounting base (41); the weights (21) are screwed or snapped onto the bottom of the second mounting base (41).

4. The testing fixture for the tensile properties of medical membrane materials according to claim 3, characterized in that, A first fixed seat (35) is fixedly provided at one end of the bottom surface of the first mounting base (31), and the first fixed clamping bar (32) is fixedly provided on the first fixed seat (35). A first slide rail (311) along the length direction of the first mounting base (31) is provided on the bottom surface of the first mounting base (31), and a first sliding seat (36) is slidably connected on the first slide rail (311). The first movable clamping bar (33) is fixedly provided on the first sliding seat (36). A first lead screw (37) is rotatably connected on the first fixed seat (35). The axial direction of the first lead screw (37) is consistent with the length direction of the first slide rail (311), and one end of the first lead screw (37) is screwed to the first sliding seat (36). A second fixed seat (45) is fixedly provided on one end of the upper side of the second mounting base (41), and the second fixed clamping bar (42) is fixedly provided on the second fixed seat (45). A second slide rail (411) along the length direction of the second mounting base (41) is provided on the upper side of the second mounting base (41), and a second sliding seat (46) is slidably connected on the second slide rail (411). The second movable clamping bar (43) is fixedly provided on the second sliding seat (46). A second lead screw (47) is rotatably connected on the second fixed seat (45). The axial direction of the second lead screw (47) is consistent with the length direction of the second slide rail (411), and one end of the second lead screw (47) is screwed to the second sliding seat (46).

5. The testing fixture for the tensile properties of medical membrane materials according to claim 1 or 2, characterized in that, The tension assembly (20) includes a vertically arranged lifting drive (22) and a lifting plate (23) arranged on the output shaft of the lifting drive (22). A tension sensor (24) is arranged on the lifting plate (23), and the lower clamp assembly (40) is arranged on the tension sensor (24).

6. The testing fixture for the tensile properties of medical membrane materials according to claim 5, characterized in that, The mounting bracket (10) includes a base plate (11), a top plate (12), and a side plate (13) that connects the base plate (11) and the top plate (12). The lifting drive component (22) is fixed on the base plate (11) and is vertically upward. The upper clamp assembly (30) is fixed on the lower side of the top plate (12). A vertical guide groove (131) is provided on the side plate (13). One side of the lifting plate (23) has a guide rod (231) and the outer end of the guide rod (231) is slidably inserted into the guide groove (131).

7. The testing fixture for the tensile properties of medical membrane materials according to claim 6, characterized in that, A first fixed seat (35) is fixedly provided at one end of the bottom surface of the first mounting base (31), the first fixed clamping bar (32) is fixedly provided on the first fixed seat (35), a first sliding seat (36) is slidably connected on the bottom surface of the first mounting base (31), and the first movable clamping bar (33) is fixedly provided on the first sliding seat (36); a first lead screw (37) and a first drive motor (38) for driving the first lead screw (37) to rotate are rotatably connected on the first mounting base (31), and the end of the first lead screw (37) away from the first drive motor (38) is screwed to the first sliding seat (36); A second fixed seat (45) is fixedly provided on one end of the upper side of the second mounting base (41), and the second fixed clamping bar (42) is fixedly provided on the second fixed seat (45). A second sliding seat (46) is slidably connected on the upper side of the second mounting base (41), and the second movable clamping bar (43) is fixedly provided on the second sliding seat (46). A second lead screw (47) and a second drive motor (48) for driving the second lead screw (47) to rotate are rotatably connected on the second fixed seat (45). One end of the second lead screw (47) is screwed to the second sliding seat (46).

8. The testing fixture for the tensile properties of medical membrane materials according to claim 5, characterized in that, Pressure sensors (70) are provided on the opposite sides of the first fixed clamping bar (32), the first movable clamping bar (33), the second fixed clamping bar (42), and the second movable clamping bar (43).

9. The testing fixture for the tensile properties of medical membrane materials according to claim 8, characterized in that, The mounting bracket (10) has a left cover (81) and a right cover (82) on its left and right sides respectively. The mounting bracket (10) has a mounting plate (83) on its back side. The mounting plate (83) has a transverse third lead screw (84) and a third drive motor (85) for driving the third lead screw (84) to rotate in both directions. The third lead screw (84) is divided into two threaded sections with opposite helical directions in the middle. The mounting plate (83) has a transverse strip-shaped through hole (831). The left cover (81) is connected to a first connecting block (811) that passes through the strip-shaped through hole (831) and is screwed to the third lead screw (84). The right cover (82) is connected to a second connecting block (821) that passes through the strip-shaped through hole (831) and is screwed to the third lead screw (84).

10. The testing fixture for the tensile properties of medical membrane materials according to claim 9, characterized in that, The testing fixture for the tensile properties of the medical membrane material also includes a controller (90). A control keyboard (91) is provided on the left cover (81) and / or the right cover (82). An alarm (92) is provided on the mounting bracket (10). The control keyboard (91), the alarm (92), the pressure sensor (70), the tension sensor (24), and the display screen (50) are all electrically connected to the controller (90).

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