Ejection force measuring device

Abstract

The application provides a kind of ejection force measuring device, including base, adjusting assembly, clamping assembly and detection assembly, adjusting assembly, clamping assembly and detection assembly are set in the same side of base, detection assembly includes detection piece and driving piece, adjusting assembly is connected to detection piece, detection piece and clamping assembly are used to connect external test piece, adjusting assembly and clamping assembly move relative to base to adjust the position of test piece, clamping assembly is configured to clamp test piece;Test piece is provided with test part, driving part and fixed part, test part is connected to detection piece and driving part, fixed part is connected to driving part and clamping assembly, driving piece is configured to drive driving part to rotate along the axis direction of driving piece, and test part is pushed to move along the axis direction of driving piece by the rotation of driving part to extrude detection piece, to measure the ejection force of test piece.The ejection force measuring device of the application can measure the ejection force of intramedullary extension nail.

Description

Technical Field

[0001] This invention belongs to the field of experimental equipment, and specifically relates to a device for measuring top output force. Background Technology

[0002] Currently, leg length discrepancy, comminuted fractures, and pathological dwarfism are common diseases in orthopedic clinics. In order to cure these diseases, a combination of a ring-shaped external fixator or a unilateral external fixator and an intramedullary nail has been developed.

[0003] External fixation devices have numerous complications, and intramedullary lengthening nails have been used as a replacement for external fixation devices in treatment. Specifically, an intramedullary lengthening nail is an intramedullary nail with an internal traction mechanism. Like traditional intramedullary nails, it not only needs to bear the load but also needs to have a strong and stable extrusion force to overcome the resistance of muscle tissue and achieve bone lengthening. Intramedullary lengthening nails do not require external fixation devices; they simply need to be connected to the bones at both ends to treat common orthopedic conditions.

[0004] However, the national industry standards only provide mechanical performance indicators for intramedullary nails, but do not provide indicators for the ejection force of intramedullary lengthening nails, and there is no relevant experimental equipment to measure the ejection force of intramedullary lengthening nails. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an ejection force measuring device that can measure the ejection force of intramedullary lengthening nails.

[0006] This invention provides an ejection force measuring device, including a base, an adjusting assembly, a clamping assembly, and a detection assembly. The adjusting assembly, clamping assembly, and detection assembly are disposed on the same side of the base, and the adjusting assembly and clamping assembly are respectively disposed on both sides of the detection assembly. The detection assembly includes a detection element and a driving element. The adjusting assembly is connected to the detection element, and the clamping assembly is disposed on the side close to the driving element. The detection element and clamping assembly are used to connect an external test piece. The adjusting assembly and clamping assembly move relative to the base to adjust the position of the test piece. The clamping assembly is configured to clamp the test piece. The test piece is provided with a testing part, a driving part, and a fixing part. The testing part is connected to the detection element and the driving part, and the fixing part is connected to the driving part and the clamping assembly. The driving element is configured to drive the driving part to rotate along the axis of the driving element, and the rotation of the driving part pushes the testing part to move along the axis of the driving element to compress the test piece and measure the ejection force of the test piece.

[0007] Optionally, the test piece is an intramedullary lengthening nail.

[0008] Optionally, the driving element surrounds the outside of the driving part, and the driving element forms a magnetic field, which is used to drive the driving part to rotate.

[0009] Optionally, the adjusting assembly and the clamping assembly are movable relative to the base along a first direction, a second direction and a third direction, wherein the length direction of the base is the first direction, the width direction of the base is the second direction, and the thickness direction of the base is the third direction.

[0010] Optionally, the adjusting assembly comprises two adjusting columns, an adjusting member, a spring and two adjusting plates, the two adjusting columns are arranged side by side along the second direction and extend along the third direction, the bottom ends of the adjusting columns are connected to the base, the side walls of the adjusting member extend along the first direction and are in contact with the side walls of the adjusting columns, the two adjusting plates are arranged side by side along the first direction, the two adjusting plates are connected by the spring, and the two adjusting plates are respectively connected to the side walls of the adjusting member and the detecting member; the adjusting columns are movable relative to the base along the first direction, the adjusting member is movable relative to the adjusting columns along the third direction, and the adjusting plates are movable relative to the adjusting member along the second direction, so as to adjust the position of the detecting member.

[0011] Optionally, the spring is one of a compression spring, a tensile spring or an artificial muscle unit.

[0012] Optionally, the clamping assembly comprises two first supports, two second supports, a first clamping member and a second clamping member, the two first supports are arranged side by side along the second direction and extend along the third direction, the bottom ends of the first supports are connected to the base, the two second supports are arranged side by side along the third direction, the side walls of the second supports extend along the first direction and are in contact with the side walls of the first supports, the side walls of the first clamping member extend along the third direction and are connected to the side walls of the second supports, the side walls of the second clamping member extend along the second direction and are connected to the side walls of the first supports and the detecting member; the first clamping member is movable relative to the second supports along the second direction, and the second clamping member is movable relative to the first clamping member along the third direction, so as to adjust the position of the detecting member.

[0013] Optionally, the second clamping member is provided with a first clamping part and a second clamping part, the side walls of the first clamping part and the second clamping part extend along the second direction, the first clamping part and the second clamping part are buckled to each other, the fixing part is arranged in a cavity formed by the first clamping part and the second clamping part, the second clamping member has a first through hole, the fixing part has a second through hole, and a screw passes through the first through hole and the second through hole to fix the first clamping part, the fixing part and the second clamping part.

[0014] Optionally, the detecting member comprises a pressure sensor and a positioning block, the pressure sensor is connected to one side of the adjusting plate away from the adjusting member, and the positioning block is connected to the pressure sensor and the testing part, so that the testing part acts perpendicularly on the pressure sensor along the first direction, and the ejection force of the testing part on the pressure sensor is measured by the pressure sensor.

[0015] Optionally, the driving member further comprises a driving member fixing seat, and the driving member fixing seat comprises a foam plate connected to the base.

[0016] The present application provides a ejection force measuring device, comprising a base, an adjusting assembly, a clamping assembly and a detection assembly, the adjusting assembly, the clamping assembly and the detection assembly are arranged on the same side of the base, the adjusting assembly and the clamping assembly are arranged on the two sides of the detection assembly respectively, the detection assembly comprises a detection piece and a driving piece, the adjusting assembly is connected to the detection piece, the clamping assembly is arranged on the side close to the driving piece, the detection piece and the clamping assembly are used for connecting an external test piece, the adjusting assembly and the clamping assembly move relative to the base to adjust the position of the test piece, and the clamping assembly is configured to clamp the test piece; the test piece is provided with a test part, a driving part and a fixing part, the test part is connected to the detection piece and the driving part, the fixing part is connected to the driving part and the clamping assembly, the driving piece is configured to drive the driving part to rotate along the axis direction of the driving piece, and the test part is pushed to move along the axis direction of the driving piece through the rotation of the driving part to extrude the detection piece, so as to measure the ejection force of the test piece. The ejection force measuring device can measure the ejection force of the intramedullary extension nail. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0018] Figure 1 The structural schematic diagram of the ejection force measuring device provided by the embodiments of the present application is shown in the figure.

[0019] Figure 2 The front view of the ejection force measuring device is shown in the figure. Figure 1 The top view of the ejection force measuring device is shown in the figure.

[0020] Figure 3 The sectional view of A-A in the ejection force measuring device is shown in the figure. Figure 1 The sectional view of B-B in the ejection force measuring device is shown in the figure.

[0021] Figure 4 The sectional view of C-C in the ejection force measuring device is shown in the figure. Figure 2

[0022] Explanation of reference signs:

[0023] 100-ejection force measuring device;

[0024] 200-test piece;

[0025] 110-base;

[0026] 120-adjusting assembly;

[0027] 130-clamping assembly;

[0028] 140-detection assembly;​

[0029] 210 - test part;

[0030] 220 - driving part;

[0031] 230 - fixing part;

[0032] 121 - adjusting column;

[0033] 122 - adjusting member;

[0034] 123 - spring;

[0035] 124 - adjusting plate;

[0036] 131 - first support;

[0037] 132 - second support;

[0038] 133 - first clamping member;

[0039] 134 - second clamping member;

[0040] 1341 - first clamping part;

[0041] 1342 - second clamping part;

[0042] 1343 - cavity;

[0043] 141 - detecting member;

[0044] 142 - driving member;

[0045] 1411 - pressure sensor;

[0046] 1412 - positioning block;

[0047] 1421 - driving member fixing seat. DETAILED DESCRIPTION

[0048] In order to make the above objectives, features and advantages of the embodiments of the present application more apparent, clear and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0049] External fixation support has many complications, and intramedullary extension nail replaces external fixation support for treatment. Specifically, the intramedullary extension nail is an intramedullary nail with a traction mechanism inside, like a traditional intramedullary nail that needs to bear load, and also needs to have strong and stable ejection force to overcome the resistance of muscle tissue to achieve bone lengthening. The intramedullary extension nail does not need to be matched with an external fixation support, and only needs to be connected to the two ends of the bone at both ends of the intramedullary extension nail to treat common diseases in orthopedic clinics.

[0050] However, the national industry standard only gives the mechanical property index of the intramedullary nail, does not give the ejection force index of the intramedullary extension nail, and there is no related experimental equipment to measure the ejection force of the intramedullary extension nail.

[0051] In order to solve the above problems, the present application provides a kind of ejection force measuring device, including base, adjusting assembly, clamping assembly and detection assembly. Detection assembly includes detection piece and driving piece, adjusting assembly and clamping assembly are used to adjust the position of external test piece, and clamping assembly is used to clamp test piece. Test piece is provided with test part, driving part and fixed part, and test piece is intramedullary extension nail. Driving piece drives driving part to rotate by forming magnetic field, and then pushes test part to move to extrude detection piece, so that the ejection force of intramedullary extension nail can be measured.

[0052] The specific content of the present application will be further described in conjunction with the drawings and specific embodiments.

[0053] External fixation support has many complications, and intramedullary extension nail replaces external fixation support for treatment. Specifically, the intramedullary extension nail is an intramedullary nail with a traction mechanism inside, like a traditional intramedullary nail that needs to bear load, and also needs to have strong and stable ejection force to overcome the resistance of muscle tissue to achieve bone lengthening. The intramedullary extension nail does not need to be matched with an external fixation support, and only needs to be connected to the two ends of the bone at both ends of the intramedullary extension nail to treat common diseases in orthopedic clinics. However, the national industry standard only gives the mechanical property index of the intramedullary nail, does not give the ejection force index of the intramedullary extension nail, and there is no related experimental equipment to measure the ejection force of the intramedullary extension nail.

[0054] The ejection force measuring device provided by the present application includes a base, an adjusting assembly, a clamping assembly and a detection assembly. The detection assembly includes a detection piece and a driving piece, the adjusting assembly and the clamping assembly are used to adjust the position of the external test piece, and the clamping assembly is used to clamp the test piece. The test piece is provided with a test part, a driving part and a fixed part, and the test piece is an intramedullary extension nail. The test part is connected to the detection piece and the driving part, and the fixed part is connected to the driving part and the clamping assembly. Since the driving piece surrounds the outside of the driving part, and the driving piece forms a magnetic field, the magnetic field drives the driving part to rotate, and then pushes the test part to move along the axis direction of the driving piece to extrude the detection piece, so that the ejection force of the intramedullary extension nail can be measured.

[0055] Figure 1 The structural schematic diagram of the ejection force measuring device provided by the embodiment of the present application is shown. Figure 2 The front view of the ejection force measuring device is shown. Figure 1 The top view of the ejection force measuring device is shown. Figure 3 The front view of the ejection force measuring device is shown. Figure 1 The top view of the ejection force measuring device is shown. Figure 1 , Figure 2 and Figure 3 The ejection force measuring device 100 includes a base 110, an adjusting assembly 120, a clamping assembly 130 and a detecting assembly 140. The base 110 serves as the basic framework of the ejection force measuring device 100, and is used to fix the adjusting assembly 120, the clamping assembly 130 and the detecting assembly 140, so that the ejection force measuring device 100 can work normally. The adjusting assembly 120, the clamping assembly 130 and the detecting assembly 140 are arranged on the same side of the base 110, and the adjusting assembly 120 and the clamping assembly 130 are arranged on the two sides of the detecting assembly 140 respectively.

[0056] The detecting assembly 140 includes a detecting member 141 and a driving member 142. The detecting member 141 serves as the core detecting component of the detecting assembly 140, and is used to detect the ejection force of the external test member 200. The driving member 142 serves as the driving unit of the detecting assembly 140, and is used to drive the test member 200 to generate the ejection force. The adjusting assembly 120 is connected to the detecting member 141, and the clamping assembly 130 is arranged on the side close to the driving member 142. The detecting member 141 and the clamping assembly 130 are used to connect the external test member 200. The adjusting assembly 120 and the clamping assembly 130 move relative to the base 110 to adjust the position of the test member 200. The clamping assembly 130 is configured to clamp the test member 200.

[0057] Specifically, the test member 200 is provided with a test part 210, a driving part 220 and a fixing part 230. The test part 210 is connected to the detecting member 141 and the driving part 220. The fixing part 230 is connected to the driving part 220 and the clamping assembly 130. The driving member 142 is configured to drive the driving part 220 to rotate along the axis direction of the driving member 142, and to push the test part 210 to move along the axis direction of the driving member 142 through the rotation of the driving part 220, so as to press the detecting member 141, and measure the ejection force of the test member 200.

[0058] The ejection force measuring device 100 can adjust the position of the test member 200 through the relative movement of the adjusting assembly 120 and the clamping assembly 130, so that the test member 200 can be more convenient in the test process. The ejection force of the test member 200 can be measured through the rotation of the driving part 220 along the axis direction of the driving member 142 driven by the driving member 142, and the movement of the test part 210 along the axis direction of the driving member 142 through the rotation of the driving part 220.

[0059] Optionally, the testing member 200 is an intramedullary nail. Specifically, since the testing member 200 is an intramedullary nail, the intramedullary nail can be clamped by the clamping assembly 130, and the position of the intramedullary nail can be adjusted by the adjusting assembly 120 and the clamping assembly 130 together, so that the intramedullary nail is perpendicular to the detection member 141, and then the driving part 220 of the intramedullary nail is driven to rotate along the axial direction of the driving member 142 by the driving member 142, and the testing part 210 of the intramedullary nail is pushed to move along the axial direction of the driving member 142 by the rotation of the driving part 220 of the intramedullary nail, so as to press the detection member 141, and the ejection force of the intramedullary nail can be measured.

[0060] Optionally, the driving member 142 surrounds the outside of the driving part 220, and the driving member 142 forms a magnetic field for driving the driving part 220 to rotate. Specifically, since the driving member 142 surrounds the outside of the driving part 220, and the driving member 142 forms a magnetic field for driving the driving part 220 to rotate, and then the testing part 210 is pushed to move along the axial direction of the driving member 142, so as to press the detection member 141, and the ejection force of the intramedullary nail can be measured.

[0061] Optionally, the adjusting assembly 120 and the clamping assembly 130 move relative to the base 110 along the first direction, the second direction and the third direction, wherein the length direction of the base 110 is the first direction, the width direction of the base 110 is the second direction, and the thickness direction of the base 110 is the third direction.

[0062] Specifically, since the adjusting assembly 120 and the clamping assembly 130 move relative to the base 110 along the first direction, the second direction and the third direction, the position of the intramedullary nail in different directions can be adjusted, so as to facilitate the measurement of the ejection force of the intramedullary nail.

[0063] As an optional embodiment, the adjusting assembly 120 comprises two adjusting columns 121, an adjusting member 122, a spring 123 and two adjusting plates 124, the two adjusting columns 121 are arranged side by side along the second direction, and the adjusting columns 121 extend along the third direction, the bottom end of the adjusting column 121 is connected to the base 110, the side wall of the adjusting member 122 extends along the first direction and is attached to the side wall of the adjusting column 121, the two adjusting plates 124 are arranged side by side along the first direction, the two adjusting plates 124 are connected by the spring 123, and the two adjusting plates 124 are respectively connected to the side wall of the adjusting member 122 and the detection member 141; the adjusting column 121 moves relative to the base 110 along the first direction, the adjusting member 122 moves relative to the adjusting column 121 along the third direction, and the adjusting plate 124 moves relative to the adjusting member 122 along the second direction, so as to adjust the position of the detection member 141.

[0064] Specifically, the adjusting column 121 moves relative to the base 110 along the first direction to realize the measurement of the detection member 141 between different positions in the first direction, the adjusting member 122 moves relative to the adjusting column 121 along the third direction to realize the measurement of the detection member 141 between different positions in the third direction, and the adjusting plate 124 moves relative to the adjusting member 122 along the second direction to realize the measurement of the detection member 141 between different positions in the second direction. Through the cooperation of the adjusting column 121, the adjusting member 122 and the adjusting plate 124, the position of the detection member 141 can be adjusted, thereby facilitating the measurement of the test piece 200.

[0065] Optionally, the spring 123 is one of a compression spring, a tensile spring or an artificial muscle unit. Specifically, since the spring 123 is one of a compression spring, a tensile spring or an artificial muscle unit, a suitable spring 123 can be selected according to the different test pieces 200, so that the ejection force of the test piece 200 measured in the process of measuring the ejection force is more accurate.

[0066] As an optional embodiment, the clamping assembly 130 comprises two first supports 131, two second supports 132, a first clamping member 133 and a second clamping member 134. The two first supports 131 are arranged side by side along the second direction, and the first support 131 extends along the third direction. The bottom end of the first support 131 is connected to the base 110. The two second supports 132 are arranged side by side along the third direction, and the side wall of the second support 132 extends along the first direction and is attached to the side wall of the first support 131. The side wall of the first clamping member 133 extends along the third direction, and the side wall of the first clamping member 133 is connected to the side wall of the second support 132. The side wall of the second clamping member 134 extends along the second direction, and the side wall of the second clamping member 134 is connected to the side wall of the first support 131 and the detection member 141. The first clamping member 133 moves relative to the second support 132 along the second direction, and the second clamping member 134 moves relative to the first clamping member 133 along the third direction to adjust the position of the detection member 141.

[0067] Specifically, the first clamping member 133 moves relative to the second support 132 along the second direction to realize the measurement of the test piece 200 between different positions in the second direction, and the second clamping member 134 moves relative to the first clamping member 133 along the third direction to realize the measurement of the test piece 200 between different positions in the third direction, and cooperates with the movement of the adjusting assembly 120, so that the detection member 141 is perpendicular to the test piece 200 when measuring the ejection force, thereby making the measured ejection force of the test piece 200 more accurate.

[0068] Optionally, the second clamping member 134 is provided with a first clamping portion 1341 and a second clamping portion 1342. Figure 4 For Figure 2A cross-sectional view along A-A. As shown in Figure 4 The side wall of the first clamping part 1341 and the side wall of the second clamping part 1342 both extend along the second direction, and the first clamping part 1341 and the second clamping part 1342 are buckled to each other. The fixing part 230 is arranged in a cavity 1343 surrounded by the first clamping part 1341 and the second clamping part 1342. The second clamping part 134 has a first through hole, and the fixing part 230 has a second through hole. A screw passes through the first through hole and the second through hole to fix the first clamping part 1341, the fixing part 230 and the second clamping part 1342.

[0069] Specifically, since the fixing part 230 of the test piece 200 is arranged in the cavity 1343 surrounded by the first clamping part 1341 and the second clamping part 1342, the second clamping part 134 has a first through hole, and the fixing part 230 has a second through hole. A screw passes through the first through hole and the second through hole to fix the first clamping part 1341, the fixing part 230 and the second clamping part 1342. Thus, the test piece 200 is fastened with the first clamping part 133 and the second clamping part 134, so as to be fastened with the clamping assembly 130. In the process of extruding the detection piece 141, the test piece 200 does not shake, so as to reduce the measurement error.

[0070] As an optional embodiment, the detection piece 141 includes a pressure sensor 1411 and a positioning block 1412. The pressure sensor 1411 is connected to the side of the adjusting plate 124 away from the adjusting piece 122, and the positioning block 1412 is connected to the pressure sensor 1411 and the test part 210. Thus, the test part 210 acts on the pressure sensor 1411 along the first direction, and the ejection force of the test part 210 on the pressure sensor 1411 is measured by the pressure sensor 1411.

[0071] Specifically, since the detection piece 141 includes a pressure sensor 1411 and a positioning block 1412, the pressure sensor 1411 is connected to the side of the adjusting plate 124 away from the adjusting piece 122, and the positioning block 1412 is connected to the pressure sensor 1411 and the test part 210. Thus, whether the test piece 200 and the pressure sensor 1411 act vertically can be judged by the positioning block 1412. The test piece 200 acts on the pressure sensor 1411 along the first direction, and the ejection force of the test part 210 on the pressure sensor 1411 is measured by the pressure sensor 1411. Thus, the measurement of the ejection force is accurate,

[0072] Optionally, the driving member 142 further comprises a driving member fixing seat 1421, and the driving member fixing seat 1421 comprises a foam plate connected to the base 110. Specifically, since the driving member 142 further comprises the driving member fixing seat 1421, and the driving member fixing seat 1421 comprises the foam plate connected to the base 110, the fixing of the driving member 142 and the base 110 is more firm, and meanwhile, the driving member fixing seat 1421 adopts the foam plate, so that the weight of the entire ejection force measuring device 100 is reduced, and the ejection force measuring device 100 is lightweight.

[0073] The working process of the ejection force measuring device 100 provided by the application is as follows: the ejection force measuring device 100 comprises a base 110, an adjusting assembly 120, a clamping assembly 130 and a detecting assembly 140. The detecting assembly 140 comprises a detecting member 141 and a driving member 142, the adjusting assembly 120 is connected to the detecting member 141, the clamping assembly 130 is arranged on one side close to the driving member 142, the detecting member 141 and the clamping assembly 130 are used for connecting an external test member 200, the adjusting assembly 120 and the clamping assembly 130 move relative to the base 110 to adjust the position of the test member 200, and the clamping assembly 130 is configured to clamp the test member 200.

[0074] Specifically, the adjusting assembly 120 comprises two adjusting columns 121, an adjusting member 122, a spring 123 and two adjusting plates 124, the adjusting column 121 moves along a first direction relative to the base 110, the adjusting member 122 moves along a third direction relative to the adjusting column 121, and the adjusting plate 124 moves along a second direction relative to the adjusting member 122 to adjust the position of the detecting member 141. The clamping assembly 130 comprises two first supports 131, two second supports 132, a first clamping member 133 and a second clamping member 134, the first clamping member 133 moves along the second direction relative to the second support 132, and the second clamping member 134 moves along the third direction relative to the first clamping member 133 to adjust the position of the detecting member 141.

[0075] Specifically, the test member 200 is provided with a test part 210, a driving part 220 and a fixing part 230, and the test member 200 is an intramedullary nail. The test part 210 is connected to the detecting member 141 and the driving part 220, and the fixing part 230 is connected to the driving part 220 and the clamping assembly 130. Since the driving member 142 surrounds the outside of the driving part 220, and the driving member 142 forms a magnetic field, the magnetic field drives the driving part 220 to rotate, and then pushes the test part 210 to move along the axis direction of the driving member 142 to press the detecting member 141, so that the ejection force of the intramedullary nail can be measured.

[0076] The ejection force measuring device provided by the application comprises a base, an adjusting assembly, a clamping assembly and a detection assembly, the adjusting assembly, the clamping assembly and the detection assembly are arranged on the same side of the base, the adjusting assembly and the clamping assembly are arranged on the two sides of the detection assembly respectively, the detection assembly comprises a detection piece and a driving piece, the adjusting assembly is connected to the detection piece, the clamping assembly is arranged on the side close to the driving piece, the detection piece and the clamping assembly are used for connecting an external test piece, the adjusting assembly and the clamping assembly are moved relative to the base to adjust the position of the test piece, and the clamping assembly is configured to clamp the test piece; the test piece is provided with a test part, a driving part and a fixing part, the test part is connected to the detection piece and the driving part, the fixing part is connected to the driving part and the clamping assembly, the driving piece is configured to drive the driving part to rotate along the axial direction of the driving piece, and the test part is pushed to move along the axial direction of the driving piece through the rotation of the driving part to extrude the detection piece, so that the ejection force of the test piece is measured. The ejection force measuring device provided by the application can measure the ejection force of an intramedullary extension nail.

[0077] In the description of the present application, it should be understood that the terms "center", "length", "width", "thickness", "top end", "bottom end", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "axial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated position or element must have a particular orientation, a particular structure and operation, and therefore cannot be understood as a limitation on the present application.

[0078] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0079] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature relative to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "above", "over" and "on" of the first feature relative to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "under" and "under" of the first feature relative to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0080] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting", "fixing", "screwed" and other terms should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited, the above terms in the present application can be understood according to the specific meaning of the above terms in the present application by those skilled in the art.

[0081] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A device for measuring output force, characterized in that, The device includes a base, an adjustment assembly, a clamping assembly, and a detection assembly. The adjustment assembly, the clamping assembly, and the detection assembly are disposed on the same side of the base. The adjustment assembly and the clamping assembly are respectively disposed on opposite sides of the detection assembly. The detection assembly includes a detection element and a driving element. The adjustment assembly is connected to the detection element. The clamping assembly is disposed on the side closer to the driving element. The detection element and the clamping assembly are used to connect an external test piece. The adjustment assembly and the clamping assembly move relative to the base to adjust the position of the test piece. The clamping assembly is configured to clamp the test piece. The test piece is provided with a test part, a drive part, and a fixing part. The test part is connected to the detection piece and the drive part. The fixing part is connected to the drive part and the clamping assembly. The drive part is configured to drive the drive part to rotate along the axis of the drive part, and to push the test part to move along the axis of the drive part by the rotation of the drive part, so as to squeeze the detection piece and measure the ejection force of the test piece. The adjusting component and the clamping component move relative to the base along a first direction, a second direction, and a third direction, wherein the length direction of the base is the first direction, the width direction of the base is the second direction, and the thickness direction of the base is the third direction; The adjustment assembly includes two adjustment columns, an adjustment element, a spring, and two adjustment plates. The two adjustment columns are arranged side by side along the second direction and extend along the third direction. The bottom end of the adjustment column is connected to the base. The side wall of the adjustment element extends along the first direction and fits against the side wall of the adjustment column. The two adjustment plates are arranged side by side along the first direction and are connected by the spring. The two adjustment plates are respectively connected to the side wall of the adjustment element and the detection element. The adjusting column moves relative to the base along the first direction, the adjusting member moves relative to the adjusting column along the third direction, and the adjusting plate moves relative to the adjusting member along the second direction to adjust the position of the detection member.

2. The top-out force measuring device according to claim 1, characterized in that, The test piece was an intramedullary lengthening nail.

3. The top-out force measuring device according to claim 2, characterized in that, The driving member surrounds the outside of the driving part, and the driving member forms a magnetic field, which is used to drive the driving part to rotate.

4. The top-out force measuring device according to claim 3, characterized in that, The spring is one of a compression spring, a tension spring, or an artificial muscle unit.

5. The top-out force measuring device according to claim 4, characterized in that, The clamping assembly includes two first brackets, two second brackets, a first clamping member, and a second clamping member. The two first brackets are arranged side by side along the second direction and extend along the third direction. The bottom end of the first bracket is connected to the base. The two second brackets are arranged side by side along the third direction and the sidewall of the second bracket extends along the first direction and fits against the sidewall of the first bracket. The sidewall of the first clamping member extends along the third direction and is connected to the sidewall of the second bracket. The sidewall of the second clamping member extends along the second direction and is connected to the sidewall of the first bracket and the detection member. The first clamping member moves relative to the second bracket along the second direction, and the second clamping member moves relative to the first clamping member along the third direction to adjust the position of the detection member.

6. The top-out force measuring device according to claim 5, characterized in that, The second clamping member is provided with a first clamping part and a second clamping part. The sidewalls of the first clamping part and the second clamping part both extend along the second direction, and the first clamping part and the second clamping part are interlocked. The fixing part is provided in the cavity formed by the first clamping part and the second clamping part. The second clamping member has a first through hole, and the fixing part has a second through hole. The screw passes through the first through hole and the second through hole to fix the first clamping part, the fixing part and the second clamping part.

7. The top-out force measuring device according to claim 6, characterized in that, The detection element includes a pressure sensor and a positioning block. The pressure sensor is connected to the side of the adjustment plate away from the adjustment element. The positioning block is connected to the pressure sensor and the testing part, so that the testing part acts perpendicularly to the pressure sensor along the first direction, and the push-out force of the testing part on the pressure sensor is measured by the pressure sensor.

8. The top-out force measuring device according to claim 7, characterized in that, The driving component further includes a driving component mounting base, and the driving component mounting base includes a foam board, which is connected to the base.

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