An automatic detection device for shape memory performance of memory alloy bone plate

Abstract

The present invention relates to the technical field of memory performance detection, and specifically discloses a device for automatically detecting the shape memory performance of a memory alloy bone plate, comprising a base, wherein two electric guide rails are arranged at the top of the base, and columns are installed at the tops of the two electric guide rail sliders, a cross plate is fixedly installed between the two columns, a one-way hydraulic cylinder is fixedly installed at the top of the cross plate, the piston rod of the one-way hydraulic cylinder penetrates and is slidably connected to the cross plate, and a lifting plate is fixedly installed at the bottom end of the piston rod of the one-way hydraulic cylinder; a bone plate body, wherein the bone plate body is made of a memory alloy; a placement table, wherein the placement table is installed at the top of the base; and a water tank, wherein a placement plate is arranged on the inner wall of the water tank. The present invention has an automatic bending and deformation structure for a bone plate, an automatic clamping and transfer function for a bone plate, improves detection efficiency, and has an automatic temperature control function for a water tank.

Description

Technical Field

[0001] The invention relates to the technical field of memory performance detection, and in particular to a device for automatically detecting the shape memory performance of a memory alloy bone fracture plate. Background Art

[0002] The shape memory alloy plate is a medical device made of nickel-titanium shape memory alloy material, which is widely used in orthopedic surgery, especially in fracture fixation and repair. This type of plate has a unique shape memory function, which can restore its original shape through the effect of body temperature after implantation in the human body, thereby achieving fixation and pressurization of the fracture site. With its unique shape memory function, excellent biocompatibility and strong fixation ability, the shape memory alloy plate has shown significant advantages in clinical applications and has become an indispensable and important tool in modern orthopedic surgery.

[0003] In the process of testing the shape memory performance of existing memory alloy plates, the surrounding part of the plate after low-temperature treatment is usually pried apart by manual hand-held pliers, and then placed in a warm water tank, and the shape change of the plate is observed by the naked eye, resulting in insufficient testing efficiency and large errors in human visual observation. Summary of the invention

[0004] In order to solve the above problems existing in the prior art, the present invention provides an automatic detection device for the shape memory performance of a memory alloy bone plate, which can solve the problems raised in the above background technology.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A device for automatically detecting shape memory properties of a memory alloy bone plate, comprising:

[0007] A base, wherein two electric guide rails are arranged at the top of the base, columns are installed at the tops of the two electric guide rail sliders, a cross plate is fixedly installed between the two columns, a one-way hydraulic cylinder is fixedly installed at the top of the cross plate, a piston rod of the one-way hydraulic cylinder is penetrated and slidably connected with the cross plate, and a lifting plate is fixedly installed at the bottom end of the piston rod of the one-way hydraulic cylinder;

[0008] A bone fracture plate body, wherein the bone fracture plate body is made of a memory alloy;

[0009] A placing table, the placing table is installed on the top of the base;

[0010] A water tank, wherein a placement plate is disposed on the inner wall of the water tank, a plurality of through holes distributed in an array are disposed on the top of the placement plate, and a temperature control component is disposed in the water tank;

[0011] A bending assembly, wherein the bending assembly is used to bend the bone plate body;

[0012] Cameras, four of which are installed at the bottom end of the lifting plate, and are used to monitor the shape changes of the bone joint plate body.

[0013] Preferably, four supporting feet are provided at the bottom end of the base, and rubber pads are provided at the bottom ends of the supporting feet.

[0014] Preferably, the bone plate body comprises a main board, and a plurality of groups of embracing arms are arranged on two opposite sides of the main board.

[0015] Preferably, a placement groove is provided at the top of the placement platform, and the distance between the side walls of two vertical sections of the placement groove is greater than the width of the bone plate body.

[0016] Preferably, a support frame is provided on the inner wall of the water tank, and the placement plate is located at the top of the support frame.

[0017] Preferably, the temperature control component includes an electric heater, which is fixedly mounted on the side wall of the water tank. The multiple electric heaters located on opposite sides of the water tank are staggered and distributed. The electric heater is located between the placement plate and the bottom wall of the water tank. A temperature sensor is provided on one side of the water tank, and the temperature sensor is located between the placement plate and the bottom wall of the water tank.

[0018] Preferably, the bending assembly includes two limit rods and a connecting plate which are arranged in parallel, the limit rod being fixedly mounted on the bottom end of the lifting plate, the limit rod being arranged parallel to the electric guide rail, folding plates being fixedly mounted on both ends of the connecting plate, the folding plates being arranged in a Z shape, the folding plates being slidably connected to adjacent limit rods, a limit block being arranged at the bottom end of the folding plate, the width of the limit block being less than one-half of the spacing between the open ends of the same group of embracing arms, a pressure rod being passed through and fixedly mounted between the two limit blocks close to the same limit rod, and a driving assembly for driving the two connecting plates to slide toward or oppositely is arranged at the bottom end of the lifting plate.

[0019] Preferably, a shaft sleeve is provided through the vertical section of the folding plate, and the shaft sleeve is slidably connected to the limiting rod.

[0020] Preferably, the compression rod comprises a square bar and a semicircular bar, and the semicircular bar matches the adjacent embracing arm.

[0021] Preferably, the driving assembly includes a bidirectional hydraulic cylinder, which is fixedly mounted on the bottom end of the lifting plate, and the bottom ends of the two connecting plates are fixedly mounted with convex plates, and the top ends of the two piston rods of the bidirectional hydraulic cylinder are respectively fixedly connected to adjacent convex plates.

[0022] The beneficial effects of the present invention are:

[0023] 1. By setting the electric guide rail and the one-way hydraulic cylinder, the beneficial effect that can be obtained is that two electric guide rails are arranged at the top of the base, columns are installed at the tops of the two electric guide rail sliders, a cross plate is fixedly installed between the two columns, a one-way hydraulic cylinder is fixedly installed at the top of the cross plate, the piston rod of the one-way hydraulic cylinder is penetrated and slidably connected with the cross plate, a lifting plate is fixedly installed at the bottom end of the piston rod of the one-way hydraulic cylinder, the bone plate body is made of memory alloy, the placing table is installed at the top of the base, the bending component includes two parallel limit rods and a connecting plate, the limit rod is fixedly installed at the bottom end of the lifting plate, the limit rod is parallel to the electric guide rail, folding plates are fixedly installed at both ends of the connecting plate, the folding plates are Z-shaped, the folding plates are slidably connected with adjacent limit rods, a limit block is arranged at the bottom end of the folding plate, the width of the limit block is less than half of the spacing between the open ends of the same group of embracing arms, a pressure rod is penetrated and fixedly installed between the two limit blocks close to the same limit rod, and a driving component for driving the two connecting plates to slide toward or oppositely is arranged at the bottom end of the lifting plate;

[0024] The two-way hydraulic cylinder then drives the two columns to move in the opposite direction, and the cross plate moves to the top of the water tank. The one-way hydraulic cylinder drives the lifting plate to descend, and the limit rod, connecting plate, folding plate, limit block and pressure rod descend synchronously. The two folding plates on the same limit rod are initially fitted together, and the two pressure rods descend between the multiple groups of embracing arms of the bone plate body. Then the two-way hydraulic cylinder cooperates with the convex plate to drive the two connecting plates away from each other, and the folding plates slide synchronously on the limit rods, and the pressure rods move synchronously until they are fitted with the inner walls of the embracing arms. The two-way hydraulic cylinder stops, and then the two electric guide rails synchronously drive the two columns to move in the opposite direction, and the cross plate moves to the top of the water tank. The one-way hydraulic cylinder drives the lifting plate to descend until the bone plate body is fitted with the placement plate. The bone plate body is located in warm water, and has the function of automatic clamping and transfer of the bone plate, thereby improving the detection efficiency.

[0025] 2. By setting the bending component, the beneficial effect that can be obtained is that the limit rod is fixedly installed at the bottom end of the lifting plate, the limit rod is arranged in parallel with the electric guide rail, and folding plates are fixedly installed at both ends of the connecting plate, the folding plates are arranged in a Z shape, and the folding plates are slidably connected to the adjacent limit rods. A limit block is arranged at the bottom end of the folding plate, and the width of the limit block is less than half of the spacing between the open ends of the same group of embracing arms. A pressure rod is penetrated and fixedly installed between the two limit blocks close to the same limit rod, and a driving component for driving the two connecting plates to slide toward or oppositely is arranged at the bottom end of the lifting plate. The driving component includes a bidirectional hydraulic cylinder, which is fixedly installed at the bottom end of the lifting plate, and convex plates are fixedly installed at the bottom ends of the two connecting plates, and the top ends of the two piston rods of the bidirectional hydraulic cylinder are respectively fixedly connected to the adjacent convex plates;

[0026] The bidirectional hydraulic cylinder cooperates with the convex plate to drive the two connecting plates away from each other, the folding plate slides on the limit rod synchronously, and the pressure rod moves synchronously to pry open the encircling arms, simulating the prying direction of the encircling arms during the working process. Then the unidirectional hydraulic cylinder drives the lifting plate to rise to the original position, and the pressure rod matches the height of the bone plate body. The camera monitors the shape changes of the bone plate body. It has an automatic bending and deformation structure of the bone plate, which reduces the detection error.

[0027] 3. By setting the temperature control component, the beneficial effect that can be obtained is that the temperature control component includes an electric heater, the electric heater is fixedly installed on the side wall of the water tank, and multiple electric heaters located on opposite sides of the water tank are staggered, and the electric heater is located between the placement plate and the bottom wall of the water tank. A temperature sensor is provided on one side of the water tank, and the temperature sensor is located between the placement plate and the bottom wall of the water tank;

[0028] The electric heater, temperature sensor and PLC controller cooperate to regulate the water temperature in the water tank. The water temperature matches the normal temperature of the human body and has the function of automatic temperature control of the water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a top view of the present invention;

[0032] Figure 3 This is an installation structure diagram of the temperature control component in the present invention;

[0033] Figure 4 This is a diagram of the installation structure of the main body of the rib plate in the present invention;

[0034] Figure 5 This is a structural diagram of the camera installation in the present invention;

[0035] Figure 6 The figure is a diagram of the installation structure of the limit block and the pressure rod in the present invention;

[0036] Figure 7 It is a cross-sectional view of the compression rod in the present invention.

[0037] Description of reference numerals:

[0038] In the figure: 1. base; 11. supporting feet; 12. electric guide rails; 13. columns; 14. cross plates; 15. one-way hydraulic cylinders; 16. lifting plates; 2. bone plate body; 21. main plate; 22. encircling arms; 3. placement table; 31. placement slots; 4. water tank; 41. placement plate; 42. through holes; 43. support frame; 44. electric heater; 45. temperature sensor; 51. limit rod; 52. connecting plate; 53. folding plate; 54. bushing; 55. limit block; 56. pressure rod; 57. two-way hydraulic cylinder; 58. convex plate; 61. square bar; 62. semicircular bar; 7. camera. DETAILED DESCRIPTION

[0039] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are clearly and completely described below in combination with the accompanying drawings and preferred embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the description of the present application, it should be understood that the orientation or position relationship indicated by "inside", "outside", etc. is based on the orientation or position described in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, a specific orientation structure and operation, and therefore cannot be understood as a limitation on the present application.

[0041] Reference Figure 1-Figure 7 , which is an automatic detection device for shape memory performance of a memory alloy bone fracture plate disclosed in the present invention, comprising a base 1, four supporting feet 11 are arranged at the bottom end of the base 1, rubber pads are arranged at the bottom ends of the supporting feet 11, two electric guide rails 12 are arranged at the top end of the base 1, columns 13 are installed at the top ends of the sliders of the two electric guide rails 12, a cross plate 14 is fixedly installed between the two columns 13, a one-way hydraulic cylinder 15 is fixedly installed at the top end of the cross plate 14, a piston rod of the one-way hydraulic cylinder 15 is penetrated and slidably connected with the cross plate 14, and a lifting plate 16 is fixedly installed at the bottom end of the piston rod of the one-way hydraulic cylinder 15;

[0042] The bone fracture plate body 2 is made of a memory alloy and includes a main plate 21. Two opposite sides of the main plate 21 are provided with a plurality of groups of embracing arms 22.

[0043] A placement table 3, which is installed on the top of the base 1. A placement groove 31 is provided on the top of the placement table 3. The distance between the side walls of the two vertical sections of the placement groove 31 is greater than the width of the bone plate body 2.

[0044] A water tank 4, wherein a placement plate 41 is disposed on the inner wall of the water tank 4, a plurality of through holes 42 distributed in an array are disposed on the top of the placement plate 41, a support frame 43 is disposed on the inner wall of the water tank 4, the placement plate 41 is located at the top of the support frame 43, a temperature control component is disposed in the water tank 4, the temperature control component comprises an electric heater 44, the electric heater 44 is fixedly mounted on the side wall of the water tank 4, a plurality of electric heaters 44 located on opposite sides of the water tank 4 are staggeredly distributed, the electric heater 44 is located between the placement plate 41 and the bottom wall of the water tank 4, a temperature sensor 45 is disposed on one side of the water tank 4, and the temperature sensor 45 is located between the placement plate 41 and the bottom wall of the water tank 4;

[0045] The bending assembly is used to bend the bone plate body 2. The bending assembly includes two parallel limit rods 51 and a connecting plate 52. The limit rod 51 is fixedly installed at the bottom end of the lifting plate 16. The limit rod 51 is parallel to the electric guide rail 12. Both ends of the connecting plate 52 are fixedly installed with folding plates 53. The folding plates 53 are arranged in a Z shape. The folding plates 53 are slidably connected to the adjacent limit rods 51. The vertical section of the folding plate 53 is penetrated by a shaft sleeve 54. The shaft sleeve 54 is slidably connected to the limit rod 51. A limit block 55 is arranged at the bottom end of the folding plate 53. The width of the limit block 55 is smaller than the width of the same group of embracing arms 22. The two limit blocks 55 close to the same limit rod 51 are connected to each other and fixedly installed with a pressure rod 56, which includes a square bar 61 and a semicircular bar 62, and the semicircular bar 62 matches the adjacent embracing arm 22. The bottom end of the lifting plate 16 is provided with a driving assembly for driving the two connecting plates 52 to slide toward or oppositely. The driving assembly includes a bidirectional hydraulic cylinder 57, which is fixedly installed at the bottom end of the lifting plate 16. The bottom ends of the two connecting plates 52 are fixedly installed with convex plates 58, and the top ends of the two piston rods of the bidirectional hydraulic cylinder 57 are respectively fixedly connected to the adjacent convex plates 58;

[0046] Cameras 7 , four cameras 7 are installed at the bottom end of the lifting plate 16 , and the cameras 7 are used to monitor the shape changes of the bone joint plate body 2 .

[0047] The working principle and use process of the present invention are as follows: the electric heater 44 and the temperature sensor 45 cooperate with the PLC controller to regulate the water temperature in the water tank 4, and the water temperature matches the normal temperature of the human body. The bone fracture plate body 2 to be tested is placed in the placement groove 31 of the placement table 3 after low-temperature treatment by a manipulator or manually, and the two electric guide rails 12 synchronously drive the two columns 13 to move, and the cross plate 14 synchronously moves to the top of the bone fracture plate body 2, and then the one-way hydraulic cylinder 15 drives the lifting plate 16 to descend, and the limit rod 51, the connecting plate 52, the folding plate 53, the limit block 55 and the pressure rod 56 are synchronously descended. The two folding plates 53 located on the same limit rod 51 are initially in a close fit, and the two pressure rods 56 descend between the multiple groups of embracing arms 22 of the bone fracture plate body 2, and then the two-way hydraulic cylinder 57 cooperates with the convex plate 58 to drive the two connecting plates 52 to move away from each other. The folding plate 53 slides on the limiting rod 51 synchronously, the pressing rod 56 moves synchronously to fit the inner wall of the embracing arm 22, the two-way hydraulic cylinder 57 stops, and then the two electric guide rails 12 synchronously drive the two columns 13 to move in the opposite direction, the cross plate 14 moves to the top of the water tank 4, and the one-way hydraulic cylinder 15 drives the lifting plate 16 to descend until the bone fracture plate body 2 fits with the placement plate 41, and the bone fracture plate body 2 is located in warm water. The two-way hydraulic cylinder 57 cooperates with the convex plate 58 to drive the two connecting plates 52 away from each other, the folding plate 53 slides on the limiting rod 51 synchronously, and the pressing rod 56 moves synchronously to pry open the embracing arm 22, simulating the prying direction of the embracing arm 22 during the working process, and then the one-way hydraulic cylinder 15 drives the lifting plate 16 to rise to the original position, the pressing rod 56 matches the height of the bone fracture plate body 2, and the camera 7 monitors the shape change of the bone fracture plate body 2.

[0048] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An automatic detection device for shape memory performance of a memory alloy bone plate, characterized in that: include: A base, wherein two electric guide rails are arranged at the top of the base, and columns are installed at the tops of the sliders on the two electric guide rails, a cross plate is fixedly installed between the two columns, a one-way hydraulic cylinder is fixedly installed at the top of the cross plate, a piston rod of the one-way hydraulic cylinder is penetrated and slidably connected with the cross plate, and a lifting plate is fixedly installed at the bottom end of the piston rod of the one-way hydraulic cylinder; A bone fracture plate body, the bone fracture plate body is made of a memory alloy, the bone fracture plate body comprises a main plate, and a plurality of groups of embracing arms are arranged on two opposite sides of the main plate; A placing table, wherein the placing table is installed on the top of the base; A water tank, wherein a placement plate is disposed on the inner wall of the water tank, a plurality of through holes distributed in an array are disposed on the top of the placement plate, and a temperature control component is disposed in the water tank; A bending assembly, the bending assembly is used to bend the main body of the bone fracture plate, the bending assembly includes two limit rods and a connecting plate arranged in parallel, the limit rod is fixedly installed on the bottom end of the lifting plate, the limit rod is arranged in parallel with the electric guide rail, folding plates are fixedly installed at both ends of the connecting plate, the folding plates are arranged in a Z shape, the folding plates are slidably connected to adjacent limit rods, a limit block is arranged at the bottom end of the folding plate, the width of the limit block is less than half of the spacing between the open ends of the same group of embracing arms, a pressure rod is penetrated and fixedly installed between the two limit blocks close to the same limit rod, and a driving assembly for driving the two connecting plates to slide toward or oppositely is arranged at the bottom end of the lifting plate; The compression rod comprises a square bar and a semicircular bar, and the semicircular bar matches the adjacent embracing arm; Cameras, four of which are installed at the bottom end of the lifting plate, and are used to monitor the shape changes of the bone joint plate body.

2. The automatic detection device for shape memory performance of a memory alloy bone plate according to claim 1, characterized in that: Four supporting feet are arranged at the bottom end of the base, and rubber pads are arranged at the bottom ends of the supporting feet.

3. The automatic detection device for shape memory performance of a memory alloy bone plate according to claim 1, characterized in that: A placement groove is arranged at the top of the placement platform, and the distance between the side walls of two vertical sections of the placement groove is greater than the width of the bone fracture plate body.

4. The automatic detection device for shape memory performance of a memory alloy bone plate according to claim 1, characterized in that: The inner wall of the water tank is provided with a support frame, and the placement plate is located at the top of the support frame.

5. The automatic detection device for shape memory performance of a memory alloy bone plate according to claim 1, characterized in that: The temperature control component includes an electric heater, which is fixedly installed on the side wall of the water tank. The multiple electric heaters located on opposite sides of the water tank are staggered and distributed. The electric heater is located between the placement plate and the bottom wall of the water tank. A temperature sensor is provided on one side of the water tank, and the temperature sensor is located between the placement plate and the bottom wall of the water tank.

6. The automatic detection device for shape memory performance of a memory alloy bone plate according to claim 1, characterized in that: A shaft sleeve is provided through the vertical section of the folding plate, and the shaft sleeve is slidably connected to the limiting rod.

7. The automatic detection device for shape memory performance of a memory alloy bone plate according to claim 1, characterized in that: The driving assembly includes a bidirectional hydraulic cylinder, which is fixedly installed at the bottom end of the lifting plate. The bottom ends of the two connecting plates are fixedly installed with convex plates, and the top ends of the two piston rods of the bidirectional hydraulic cylinder are respectively fixedly connected to the adjacent convex plates.

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