Tooling fixture

Abstract

The present application relates to a kind of tooling fixtures, including main body seat, shape change cover and control piece, main body seat has sliding track, shape change cover can occur radial expansion to change its maximum diameter, the distal end of control piece has prop open part, prop open part is configured to be inserted in shape change cover, and the maximum diameter of shape change cover is adjusted by adjusting its relative position with shape change cover, shape change cover is configured to be released or relative locking by the adjustment of its maximum diameter with the hole of the piece to be clamped, control piece is slidably connected with main body seat along sliding track, and the relative position of prop open part and shape change cover is adjusted by sliding relative to main body seat.The tooling fixture has strong universality, and the structure design is applicable to any size of carpal pad, and when carpal pad is clamped, it is convenient, fast, the inner prop clamping force of prop open part to the inner step hole of carpal pad is controllable, can reduce the deformation of carpal pad, reduce the deformation of carpal pad due to external force.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to tooling fixtures. Background Technology

[0002] The wrist joint artificial joint system mainly consists of three parts: the radial stem, the carpal liner, and the carpal support. Currently, the carpal liner is usually made of ultra-high molecular weight polyethylene (plastic) raw materials. Because the articular surfaces of the carpal liner and the radial stem will generate relative friction during wrist joint movement, the surface quality of the carpal liner and the radial stem will directly affect the service life of the entire wrist joint artificial joint system.

[0003] The raw materials for wrist bone pads are relatively soft and expensive, requiring high surface finish. This places high demands on the processing technology and tooling used in wrist bone pad manufacturing. For example, improperly designed tooling can cause deformation of the wrist bone pad under external force, and in severe cases, it can even cause the pad to be squeezed out and completely ruined. Because existing tooling cannot achieve stable and safe clamping of wrist bone pads, it cannot meet the requirements of batch processing and cannot guarantee stable processing quality. Summary of the Invention

[0004] Therefore, it is necessary to provide a tooling fixture that addresses the problem that tooling fixtures cannot stably and safely clamp the wrist bone pad.

[0005] The present invention also provides a tooling fixture, comprising:

[0006] Main body base, the main body base having a sliding track;

[0007] A deformable sleeve, which can expand radially to change its maximum diameter;

[0008] A control element has a spreading portion at its distal end, the spreading portion being configured to be inserted into the deformation sleeve and to adjust the maximum diameter of the deformation sleeve by adjusting its relative position to the deformation sleeve. The deformation sleeve is configured to be released or locked relative to the hole of the clamped part by adjusting its maximum diameter. The control element is slidably connected to the main body along the sliding track and to adjust the relative position of the spreading portion and the deformation sleeve by sliding relative to the main body.

[0009] In one embodiment, the main body has at least one through hole configured to form the sliding track, and the control member is a rod-shaped member slidably inserted into the through hole.

[0010] In one embodiment, the expansion portion is frustum-shaped, and the diameter of the expansion portion gradually increases from its proximal end to its distal end; and / or, the deformable sleeve is cylindrical.

[0011] In one embodiment, the deformable sleeve is an elastic sleeve.

[0012] In one embodiment, the sidewall of the deformable sleeve is provided with an axially extending slit.

[0013] In one embodiment, the cracks include a plurality of proximal cracks penetrating the proximal end of the deformable sleeve and a plurality of distal cracks penetrating the distal end of the deformable sleeve, wherein the plurality of proximal cracks and the plurality of distal cracks are distributed circumferentially along the deformable sleeve and are spaced apart from each other.

[0014] In one embodiment, it further includes:

[0015] A control element connected to the control element, the control element being configured to control the sliding of the control element relative to the main body.

[0016] In one embodiment, the control member includes an interconnected grip portion and an abutment portion, the abutment portion being hinged to a proximal end of the control member, at least a portion of the outer contour of the abutment portion forming an abutment contour segment for abutting against the main body, the abutment contour segment having at least two positions at different distances from the hinge position of the abutment portion, the abutment contour segment being configured to drive the control member to slide relative to the main body by abutting against the main body at different positions.

[0017] In one embodiment, the distance between each position on the abutting contour segment from one end to the other and the hinge position of the abutting portion gradually increases.

[0018] In one embodiment, the outer contour of the abutment portion is elliptical, with the major axis of the ellipse being 5.8 mm to 6.2 mm and the minor axis of the ellipse being 4.8 mm to 5.2 mm.

[0019] In one embodiment, it further includes:

[0020] An adjusting member, wherein the proximal end of the control member has an adjusting track parallel to the sliding track, the abutment portion and the proximal end of the control member are hinged on the adjusting track, and the adjusting member is configured to adjust the position of the hinged position on the adjusting track.

[0021] In one embodiment, the control member has a waist hole at its proximal end, the waist hole being configured to form the adjustment track. The abutment portion is rotatably connected to the waist hole via a rotating shaft. The adjustment member has a threaded portion, and the adjustment member is threadedly connected to the inner wall of the waist hole via the threaded portion to adjust the maximum height of the adjustment member on the inner wall of the waist hole. The adjustment member is configured to abut against the rotating shaft to adjust the position of the rotating shaft within the waist hole.

[0022] In one embodiment, it further includes:

[0023] A retaining ring is engaged between the rotating shaft and the abutment portion to limit the axial movement of the rotating shaft.

[0024] The above-mentioned tooling fixture has the advantage of strong versatility. Its structural design is suitable for wrist bone pads of any size. It is convenient and quick to operate when clamping the wrist bone pad. The cooperation between the expansion part and the deformation sleeve can make the internal support clamping force of the inner step hole of the wrist bone pad controllable, thus reducing the deformation of the wrist bone pad caused by external force and meeting the requirements of stable and safe clamping effect. Attached Figure Description

[0025] Figure 1 A perspective view of a tooling fixture provided in one embodiment of the present invention;

[0026] Figure 2 A plan view of a tooling fixture provided in one embodiment of the present invention;

[0027] Figure 3 For example Figure 2 A sectional view of the tooling fixture shown;

[0028] Figure 4 This is a schematic diagram illustrating the usage state of a tooling fixture provided in one embodiment of the present invention;

[0029] Figure 5 A cross-sectional view of the hinged position structure of a control element and a manipulation element provided in an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the assembly structure of a buckle provided in one embodiment of the present invention;

[0031] Figure 7 A three-dimensional schematic diagram illustrating the mating state of the tooling fixture and the wrist bone pad provided in one embodiment of the present invention;

[0032] Figure 8 A schematic diagram showing the mating state of the tooling fixture and the wrist bone pad provided in one embodiment of the present invention;

[0033] Figure 9 For example Figure 8The tooling fixture shown is a cross-sectional view.

[0034] Icon labels:

[0035] 001. Carpal bone pad; 002. Internal step hole;

[0036] 100. Main body base; 200. Control component; 300. Deformation sleeve; 400. Control component; 500. Adjusting component; 600. Snap ring;

[0037] 110. Through hole; 120. Sliding track;

[0038] 210. Spreading section; 220. Waist hole; 230. Adjustment track;

[0039] 310. Proximal fracture; 320. Distal fracture;

[0040] 410. Holding part; 420. Contact part; 430. Rotating shaft. Detailed Implementation

[0041] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0042] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0047] To more clearly describe the structure of the tooling fixture, the term "distal end" is defined herein as the end furthest from the operator during the surgical procedure, and "proximal end" as the end closest to the operator during the surgical procedure. Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0048] See Figures 1 to 4As shown, an embodiment of the present invention provides a tooling fixture for a wrist bone liner 001. The tooling fixture for the wrist bone liner 001 includes a main body 100, a control member 200, and a deformable sleeve 300. The main body 100 has a sliding track 120. The deformable sleeve 300 can expand radially to change its maximum diameter. The control member 200 is slidably connected to the main body 100 along the sliding track 120. The distal end of the control member 200 has a spreading portion 210. The expansion portion 210 is configured to be inserted into the deformation sleeve 300, capable of expanding the deformation sleeve 300, and adjusting the maximum diameter of the deformation sleeve 300 by adjusting its relative position to the deformation sleeve 300. The deformation sleeve 300 is configured to be released or locked relative to the hole of the clamped part by adjusting its own maximum diameter. The control member 200 is configured to adjust the relative position of the expansion portion 210 and the deformation sleeve 300 by sliding relative to the main body seat 100.

[0049] The user can directly manipulate the control element 200 to slide relative to the main body 100 along the sliding track 120. Alternatively, for ease of operation, the tooling fixture may also include a control element 400 connected to the control element 200. The control element 400 is configured to manipulate the control element 200 to slide relative to the main body 100, thereby adjusting the sliding position of the control element 200 on the main body 100. This application uses the clamping of a wrist bone pad 001 as an example to illustrate this tooling fixture. However, it is readily understood that as long as the part to be clamped has a stepped hole like the wrist bone pad 001, or a similar cylindrical blind hole, the tooling fixture of this application can also be used for clamping. The sliding track 120 on the main body 100 is provided to give the control component 200 a predetermined movement trajectory for sliding assembly, so that the control component 200 can slide on the main body 100 along the expected movement trajectory without deviating from the expected movement trajectory. The sliding track 120 on the main body 100 can be formed by its own structure or by additional components. For example, guide grooves or guide protrusions can be provided on the main body 100, or additional guide components can be provided on the main body 100. In one embodiment, the main body 100 has at least one through hole 110. For example, when the mating wrist bone pad 001 has two inner stepped holes 002, two corresponding through holes 110 can be provided. The through holes 110 are configured to form the sliding track 120, so the sliding track 120 is parallel to the sliding track 120. The central axis of the through hole 110, or the sliding track 120, coincides with the central axis of the through hole 110. The control member 200 is a rod-shaped member, which can be cylindrical, prismatic, etc. The size of the rod-shaped member matches the size of the through hole 110, allowing the rod-shaped member to move along the axial direction of the through hole 110. This satisfies the requirement that the control member 200 can be slidably inserted into the through hole 110. When the control member 200 slides along the axial direction of the through hole 110, it is equivalent to sliding along the sliding track 120 and being slidably assembled on the main body seat 100. At this time, the proximal end and the distal end of the control member 200 respectively protrude through the through hole 110, so that the expansion portion 210 located at the distal end of the control member 200 can extend out of the distal end of the main body seat 100, and the proximal end of the control member 200 can also extend out of the proximal end of the main body seat 100.

[0050] The expanding portion 210 expands the deformation sleeve 300 to adjust its maximum diameter. This can be achieved by providing a corresponding mating structure between the expanding portion 210 and the deformation sleeve 300. For example, the expanding portion 210 can have multiple different positions. When these different positions abut against the inner ring of the deformation sleeve 300 and apply force to it, the maximum diameter of the deformation sleeve 300 can be changed. Alternatively, multiple different positions can be provided on the deformation sleeve 300, and when the expanding portion 210 abuts against these different positions... When a force is applied to the deformation sleeve 300, the maximum diameter of the deformation sleeve 300 can also be changed. Therefore, the spreading action between the spreading part 210 and the deformation sleeve 300 can depend not only on the special structure of the spreading part 210, but also on the special structure of the deformation sleeve 300. In fact, special structures can be formed on both the spreading part 210 and the deformation sleeve 300 to make the spreading part 210 able to be configured to spread the deformation sleeve 300 as needed after the deformation sleeve 300 is fitted on, thereby adjusting the maximum diameter of the deformation sleeve 300.

[0051] When the diameter of the deformation sleeve 300 is small, it can be inserted into the inner stepped hole 002 of the carpal bone pad 001. Then, the maximum diameter of the deformation sleeve 300 can be increased until it can compress the inner stepped hole 002 of the carpal bone pad 001, thereby achieving relative locking. When it is necessary to release the carpal bone pad 001 relative to the deformation sleeve 300, it is only necessary to adjust the maximum diameter of the deformation sleeve 300 in the opposite direction so that the deformation sleeve 300 can release the compression with the inner stepped hole 002 of the carpal bone pad 001. The maximum diameter that the deformation sleeve 300 needs to be adjusted to when it is relative to the inner stepped hole 002 of the carpal bone pad 001 for relative release and relative locking can be determined according to the specific size of the inner stepped hole 002 of the carpal bone pad 001. Thus, it can meet the requirements of relative release and relative locking when used with different carpal bone pads 001, and is not limited here.

[0052] See Figures 1 to 3As shown, in one embodiment, the expanding portion 210 is frustum-shaped, and the diameter of the expanding portion 210 gradually increases from its proximal end to its distal end. The deformable sleeve 300 can be cylindrical, in which case the diameter of the deformable sleeve 300 is consistent from its proximal end to its distal end. Therefore, a special structure that can be used to change the maximum diameter of the deformable sleeve 300 is formed on the expanding portion 210, specifically on the frustum-shaped inclined outer wall of the expanding portion 210. When the control member 200 moves along the sliding track 120, it can drive the expanding portion 210 to move synchronously along the sliding track 120. Once the deformable sleeve 300 is fitted onto the expanding portion 210, the expanding portion 210 can move along the proximal and distal ends of the deformable sleeve 300. The frustum-shaped inclined outer wall abuts against the inner ring of the deformable sleeve 300. When the inclined outer wall abuts against the inner ring of the deformable sleeve 300 at different positions, the maximum diameter of the deformable sleeve 300 can be changed.

[0053] When the deformable sleeve 300 deforms and its maximum diameter increases, it can form a mutual compression to achieve locking when it is engaged with the inner stepped hole 002 of the wrist bone pad 001. In addition, the deformable sleeve 300 preferably undergoes elastic deformation, so that when the spreading part 210 leaves the deformable sleeve 300, the deformable sleeve 300 can shrink back to its original shape, which facilitates the separation of the clamp from the object to be clamped.

[0054] The deformation of the deformation sleeve 300 can be due to the deformation of the material itself or the deformation of the structure itself. For example, when the deformation sleeve 300 is made of rubber, the deformation of the deformation sleeve 300 can be achieved because the rubber itself can deform. Alternatively, when the deformation sleeve 300 is made of metal, the metal itself cannot deform or the deformation is extremely small and negligible. In this case, corresponding settings can be made in the structure of the deformation sleeve 300 to achieve the deformation of the deformation sleeve 300. In one embodiment, the sidewall of the deformation sleeve 300 has an axial extension... When the deformable sleeve 300 is expanded by the expansion portion 210, the crack will change size to meet the deformation of the deformable sleeve 300. In one embodiment, the crack may include a plurality of proximal cracks 310 penetrating the proximal end of the deformable sleeve 300 and a plurality of distal cracks 320 penetrating the distal end of the deformable sleeve 300. The plurality of proximal cracks 310 and the plurality of distal cracks 320 are distributed along the circumference of the deformable sleeve 300 and are spaced apart from each other. In addition, the formation structure and formation position of the crack can be set according to requirements and are not limited here.

[0055] The purpose of the control component 400 is to enable the control component 200 to achieve the desired sliding effect. Therefore, the control component 400 can be a component such as a cylinder or a motor that can operate the control component 200 to perform sliding movements. In one embodiment, the control component 400 may include a gripping part 410 and an abutting part 420 connected to each other. The gripping part 410 is used for hand operation by the operator. Therefore, the gripping part 410 can adopt a rod-shaped or block-shaped structure that is easy to hold, and the outer contour can be designed to conform to the shape of the hand. The abutting part 420 is used to complete the operation of the control component 200. The abutting part 420 is hinged to the proximal end of the control component 200. At least a portion of the outer contour of the abutting part 420 forms an abutting contour segment, such as one-half, one-third, or one-quarter of the outer contour of the abutting part 420. The abutting contour segment is the part on the outer contour of the abutting part 420 that abuts against the main body 100. When a certain position on the abutting contour segment abuts against the main body 100, the distance between that position and the hinge position of the abutting part 420 determines the length of the extension of the spreading part 210. The abutting contour segment is used to abut against the main body seat. At least two positions on the abutting contour segment are at different distances from the hinge position of the abutting part 420. That is, there are at least two different distances between each position on the abutting contour segment and the hinge position of the abutting part 420. The more different distances there are, the more the extension length of the spreading part 210 is increased, and the more dimensions the deformable sleeve 300 is expanded. In one embodiment, the distance between each position on the abutting contour segment from one end to the other and the hinge position of the abutting part 420 gradually increases. This will also cause the deformable sleeve 300 to achieve continuous diameter changes. Therefore, the abutting contour segment can be configured to drive the control member 200 to slide relative to the main body seat 100 by abutting against the main body seat 100 at different positions on itself, adjusting its sliding position on the main body seat 100, and then adjusting the maximum diameter of the deformable sleeve 300 through the cooperation of the spreading part 210 and the deformable sleeve 300. In one embodiment, the outer contour of the abutment portion 420 can be elliptical, and the major axis (i.e., the maximum diameter) of the ellipse is 5.8mm to 6.2mm, and the minor axis (i.e., the minimum diameter) of the ellipse is 4.8mm to 5.2mm. For example, the maximum diameter of the ellipse is 5.8mm, 5.9mm, 6mm, 6.1mm, or 6.2mm, and the minimum diameter of the ellipse is 4.8mm, 4.9mm, 5mm, 5.1mm, or 5.2mm.

[0056] Although the control element 200 can slide along the direction of the sliding track 120, it also has a sliding range. When the control element 200 slides within this range, it can cause a certain range of diameter changes in the deformable sleeve 300. The limitation of the sliding range of the control element 200 can be based on the range of the sliding track 120. Alternatively, in one embodiment, the tooling fixture for the carpal bone pad 001 further includes an adjusting element 500, and the proximal end of the control element 200 has a parallel extension to the sliding track 120. The adjustment track 230 can also be implemented based on the range of the adjustment track 230. The hinge position of the abutment part 420 and the near end of the control member 200 is on the adjustment track 230. The adjustment member 500 is configured to adjust the position of the hinge position on the adjustment track 230. When the hinge position of the abutment part 420 and the control member 200 changes, the sliding control range of the control member 200 can be changed accordingly when each position on the abutment contour segment on the abutment part 420 abuts against the main body seat 100.

[0057] The adjustment track 230 at the proximal end of the control element 200 can be formed by its own structure or by additional components. For example, a guide rail groove or guide rail protrusion can be provided at the proximal end of the control element 200, or additional guide rail components can be provided at the proximal end of the control element 200, etc. (See reference) Figure 5 As shown, in one embodiment, the control member 200 has a waist hole 220 at its proximal end, which is configured to form the adjustment track 230. Therefore, the adjustment track 230 is parallel to the length direction of the waist hole 220. The abutment portion 420 is rotatably assembled with the waist hole 220 via a pivot 430. The adjustment member 500 has a threaded portion, which is threadedly connected to the inner wall of the waist hole 220 to adjust the adjustment member 500 within the waist hole 220. The maximum height on the wall, the adjusting member 500 is configured to abut against the rotating shaft 430 to adjust the position of the rotating shaft 430 in the waist hole 220. So when rotating the threaded part, the height adjustment of the adjusting member 500 can be used to abut the rotating shaft 430 at different positions in the waist hole 220, so that the rotating shaft 430 forms a hinge with the abutment part 420 and the proximal end of the control member 200 at different positions in the waist hole 220. When the hinge position is different, the sliding range of the control member 200 on the sliding track 120 will be different.

[0058] See Figure 6As shown, in one embodiment, the tooling fixture for the wrist bone pad 001 further includes a retaining ring 600, which is engaged between the rotating shaft 430 and the abutment portion 420 to limit the axial movement of the rotating shaft 430. The retaining ring 600 can be an elastic retaining ring. By engaging the rotating shaft 430, the rotating shaft 430 can be prevented from moving axially and thus disengaging from the abutment portion 420.

[0059] See Figure 4 as well as Figures 7 to 9 As shown, when using this tooling fixture to fix the carpal bone pad 001, the gripping part 410 of the control member 400 can be controlled first, and the abutting part 420 can be rotated to the position where the abutting contour section is closest to the hinge position and abuts against the main body 100. For example, at this time, the control member 400 can be roughly perpendicular to the surface of the main body 100. In this state, the abutting part 420 can push the control member 200 to the far end. Based on the frustum shape of the expansion part 210 on the control member 200, at this time, the smaller diameter part of the frustum shape contacts the deformation sleeve 300, which can reduce the maximum diameter of the deformation sleeve 300. At this time, the deformation sleeve 300 can be inserted into the inner stepped hole 002 of the carpal bone pad 001. Then, hold down the wrist bone pad 001 and control the gripping part 410 of the control member 400 to rotate the abutment part 420 in the opposite direction, so that the abutment contour section farthest from the hinge position abuts against the main body 100. Pull the control member 200 towards the proximal end. For example, at this time, the control member 400 can be roughly parallel to the surface of the main body 100. Based on the frustum shape of the expansion part 210 on the control member 200, at this time, the larger diameter part of the frustum shape contacts the deformation sleeve 300, which can expand the maximum diameter of the deformation sleeve 300. At this time, the deformation sleeve 300 can form a compression with the inner stepped hole 002 of the wrist bone pad 001, so that the wrist bone pad 001 is locked by the tooling fixture. This tooling fixture has the advantages of strong versatility. Its structural design is suitable for wrist bone pads 001 of any size. It is convenient and quick to operate when clamping the wrist bone pads 001. Moreover, the cooperation between the expansion part 210 and the deformation sleeve 300 can make the internal support clamping force of the wrist bone pad 001 in the inner stepped hole 002 controllable, reduce the deformation of the wrist bone pad 001, keep the clamping of the wrist bone pad 001 in the optimal state, and reduce the deformation of the wrist bone pad 001 caused by external forces.

[0060] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A tooling fixture for holding a carpal bone pad, characterized in that, include: Main body base, the main body base having a sliding track; A deformable sleeve, which can expand radially to change its maximum diameter; A control element has a spreading portion at its distal end, which is configured to be inserted into the deformable sleeve and to adjust the maximum diameter of the deformable sleeve by adjusting its relative position to the deformable sleeve. The deformable sleeve is configured to release or lock relative to the hole of the clamped part by adjusting its maximum diameter. The control element is slidably connected to the main body along the sliding track and adjusts the relative position of the spreading portion and the deformable sleeve by sliding relative to the main body. The spreading portion is frustum-shaped, and its diameter gradually increases from its proximal end to its distal end. The deformable sleeve is configured to elastically deform, and when the spreading portion leaves the deformable sleeve, the deformable sleeve can actively contract and return to its original shape. A control element connected to the control element, the control element being configured to control the sliding of the control element relative to the main body; the control element includes a gripping portion and an abutting portion connected to each other, the abutting portion being hinged to the proximal end of the control element; An adjusting member is provided, wherein a waist hole is provided at the proximal end of the control member, the waist hole is configured to form an adjusting track, the trajectory lines of the adjusting track and the sliding track coincide, the abutting part is rotatably connected to the waist hole via a rotating shaft, the adjusting member has a threaded part, the adjusting member is threadedly connected to the inner wall of the waist hole via the threaded part to adjust the maximum height of the adjusting member on the inner wall of the waist hole, and the adjusting member is configured to abut against the rotating shaft to adjust the position of the rotating shaft within the waist hole.

2. The tooling fixture according to claim 1, characterized in that, The main body has at least one through hole configured to form the sliding track, and the control member is a rod-shaped member that is slidably inserted into the through hole.

3. The tooling fixture according to claim 1, characterized in that, The deformation sleeve is cylindrical.

4. The tooling fixture according to claim 1, characterized in that, The deformable sleeve is an elastic sleeve.

5. The tooling fixture according to claim 1, characterized in that, The sidewall of the deformation sleeve is provided with an axially extending crack.

6. The tooling fixture according to claim 5, characterized in that, The cracks include multiple proximal cracks penetrating the near end of the deformable sleeve and multiple distal cracks penetrating the far end of the deformable sleeve. The multiple proximal cracks and the multiple distal cracks are distributed circumferentially along the deformable sleeve and are spaced apart from each other.

7. The tooling fixture according to claim 1, characterized in that, At least a portion of the outer contour of the abutment portion forms an abutment contour segment, which is used to abut against the main body. At least two positions on the abutment contour segment are at different distances from the hinge position of the abutment portion. The abutment contour segment is configured to drive the control member to slide relative to the main body by abutting against the main body at different positions.

8. The tooling fixture according to claim 7, characterized in that, The distance between each position on the abutting contour segment from one end to the other and the hinge position of the abutting part gradually increases.

9. The tooling fixture according to claim 7, characterized in that, The outer contour of the abutment portion is elliptical, with the major axis of the ellipse being 5.8mm to 6.2mm and the minor axis of the ellipse being 4.8mm to 5.2mm.

10. The tooling fixture according to claim 1, characterized in that, Also includes: A retaining ring is engaged between the rotating shaft and the abutment portion to limit the axial movement of the rotating shaft.

Images