Artificial limb foot plate assembling workbench device and application thereof

Abstract

The invention discloses an artificial limb foot plate assembling workbench device and application thereof. The multi-stage limiting workbench is adopted, different limiting modes are adopted for limiting, the precision requirement of the direction of the connecting column and an artificial foot plate opening groove in the artificial foot plate assembling process is met, the height of the portal frame is adjusted by moving the different positions of the portal frame and replacing different extension plates to adjust the height of the limiting plate, and therefore the height of the connecting column of different artificial foot plates is met; the requirement for longitudinal straightness of different prosthetic foot plate connecting columns and prosthetic foot plates is met, the gait of a user is more natural, the requirements for supporting performance and movement coordination are met, and the device is suitable for assembly and use of different prosthetic foot plates and is high in universality and practicability.

Description

Technical Field

[0001] The invention relates to the field of prostheses, and in particular to a prosthesis foot plate assembly workbench device and application thereof. Background Art

[0002] Prosthetic foot cores are suitable for amputees with thigh and calf amputations, and are used to compensate for the functional loss caused by the missing limbs of below-knee amputees. At present, the below-knee prosthetic foot cores produced by domestic manufacturers are mostly assembled from different parts to ensure that the prosthetic foot does not tilt after assembly and the buffering force does not shift when landing. The use of prosthetic foot cores can achieve correct energy storage and release during gait, making the gait of amputees more natural.

[0003] There are many kinds of prosthetic foot plates / cores. For example:

[0004] The patent specification with the announcement number CN213217926U discloses a prosthetic foot with better elasticity and strength, which is a technical solution of a prosthetic foot, comprising a first foot and a second foot. The first foot is an L-shaped plate, the upper end of which is connected to the human body, and the lower end of which is connected to the second foot; the second foot is placed horizontally, and one end of which is connected to the first foot to form a V-shaped structure; the first foot and the second foot both include a first composite layer, a second composite layer and a third composite layer that are stacked in sequence. The first and second foot of the patented technology are both designed with a composite layer structure of carbon fiber to obtain foot toes with different hardness and elasticity, so as to adapt to the needs of each user and the environment in which they are used, broaden its scope of application, and also improve the comfort of the user and the practicality of the product.

[0005] The patent specification with the announcement number CN213217925U discloses a foot prosthesis with better elasticity and strength, which includes a first foot and a second foot; the first foot is an arc-shaped plate, one end of which is connected to the human body, and the middle part is connected to the second foot; the second foot is a horizontal plate, one end of which is connected to the first foot to form a Y-shaped structure; the first foot and the second foot both include a first composite layer, a second composite layer and a third composite layer stacked in sequence. In this patented technology, the first and second foot are both designed with a composite layer structure of carbon fiber to obtain foot toes with different hardness and elasticity, so as to adapt to the needs of each user and the environment in which they are used, broaden its scope of application, and also improve the comfort of the user and the practicality of the product.

[0006] Currently, the carbon fiber prosthetic foot cores on the market are generally connected by bolts, and are assembled by connecting different carbon fiber plates. However, the mechanical connection assembly accuracy is also a factor that affects the product's service life and wearing comfort. Therefore, the present invention uses a special assembly device to ensure the consistency of the prosthetic foot core's assembly accuracy, ensure the wearing comfort of amputees, and extend the service life. Summary of the invention

[0007] The present invention provides a prosthetic foot plate assembly workbench device and its application. The present invention adopts rigid positioning with high longitudinal positioning accuracy, adopts a combined structure with strong flexibility, expands the scope of use, and is suitable for the assembly of multiple prosthetic foot plates.

[0008] [1] A prosthetic foot assembly workbench device, the prosthetic foot comprising a foot plate and a connecting member for connecting the ankle joint and the foot plate, the connecting member being provided with a connecting column for connecting the ankle joint, the prosthetic foot assembly workbench device comprising a base, a gantry and a limit assembly; the gantry is a door-shaped structure through which the prosthetic foot plate can pass, comprising two supporting legs and a crossbeam fixedly connected to the top ends of the two supporting legs; the limit assembly is a limit plate or a limit plate and an extension plate fixedly connected up and down, used for assembling different prosthetic foot plates;

[0009] Two first slide grooves corresponding to the two supporting legs of the gantry are provided in the longitudinal direction of the base, so that the gantry can be moved longitudinally along the first slide grooves to adjust the position of the gantry fixedly installed on the base; the gantry can be fixedly installed at any position in the first slide grooves to match the assembly of different prosthetic foot plates;

[0010] A second slide groove is provided on the top surface of the crossbeam in the longitudinal direction, so that the limit assembly can be moved longitudinally along the second slide groove to adjust the position where the limit assembly is fixedly installed on the gantry; the limit assembly can be fixedly installed at any position in the second slide groove through a limit plate or an extension plate to match the assembly of different prosthetic foot plates;

[0011] The end face of one end of the limiting plate is an inclined surface that can match the inclination of the side surface of the connecting column and a notch is formed at this end. The end of the limiting plate where the notch is located is detachably fixedly connected to the first clamping plate, so that the notch forms a through hole or a slot for the connecting column to extend into and clamp.

[0012] In some embodiments, in the prosthetic foot assembly workbench device, the top surface of the limit plate is provided with a second clamping plate for clamping the connecting column downward, and the bottom surface of one end of the second clamping plate corresponds to the top surface of the connecting column in the through hole. Further optionally, both ends of the bottom surface of the second clamping plate are arc-shaped clamping surfaces, and the clamping surface of one end corresponds to the top surface of the connecting column in the through hole; the second clamping plate is provided with a threaded hole, and the second clamping plate is fixedly connected to the top surface of the limit plate by bolts, and the force-bearing surface of the second clamping plate where the threaded hole is located and used for bolt-fixed connection is arc-shaped.

[0013] In some embodiments, the prosthetic foot assembly workbench device is provided with one or more clamping mechanisms for fixing the prosthetic foot on the base. Further optionally, the clamping mechanism includes a clamping bolt and a clamping block through which the clamping bolt can pass, and the clamping block is used to clamp and fix the prosthetic foot under the action of the clamping bolt; the base is provided with a plurality of bolt holes that can cooperate with the clamping bolts, and is used to adjust the position of the clamping mechanism to cooperate with the assembly of different prosthetic feet.

[0014] In some embodiments, the prosthetic foot assembly workbench device has a baffle at one end of the base for limiting the longitudinal position of the prosthetic foot.

[0015] In some embodiments, the prosthetic foot assembly workbench device has one or more open slots on the foot plate of the prosthetic foot, and the base is provided with one or more limiting bosses corresponding to one or more of the open slots, and the limiting bosses extend into the open slots to position the prosthetic foot.

[0016] In some embodiments, the prosthetic foot assembly workbench device has one or more opening slots on the foot plate of the prosthetic foot, and one or more position limiting guide posts corresponding to the one or more opening slots are provided on the bottom surface of the crossbeam, and the position limiting guide posts extend into the opening slots to position the prosthetic foot plate. Different position limiting guide posts can be replaced to cope with the fixed assembly of different prosthetic foot plates.

[0017] [2] Application of the prosthetic foot assembly workbench device described in [1] in fixing and assembling a prosthetic foot.

[0018] [3] A method for fixing and assembling a prosthetic foot, using the prosthetic foot assembly workbench device described in [1] to fix and assemble a prosthetic foot.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention adopts a multi-stage limiting workbench and different limiting methods to ensure the accuracy of the direction of the connecting column and the opening groove of the prosthetic foot plate during the assembly process of the prosthetic foot plate. By moving the gantry to different positions and replacing different extension plates to adjust the height of the limiting plate, the height of the prosthetic foot plate connecting column can be adapted to different heights of the prosthetic foot plate connecting column, and the longitudinal straightness requirements of the prosthetic foot plate connecting column and the prosthetic foot plate can be ensured, so that the user's gait is more natural, and the support and movement coordination requirements are met. It is suitable for the assembly and use of different prosthetic foot plates, and has strong versatility and high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of the prosthetic foot assembly workbench device of Example 1;

[0022] Figure 2 This is a schematic structural diagram of the prosthetic foot plate connecting component of Example 1;

[0023] Figure 3 This is a schematic diagram of the use status of the prosthetic foot assembly workbench device of Example 1;

[0024] Figure 4 This is a schematic structural diagram of a prosthetic foot plate connecting component of Example 2;

[0025] Figure 5 This is a schematic diagram of the prosthetic foot assembly workbench device in use according to Example 2. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0027] Embodiment 1:

[0028] See also Figures 1 to 3 The prosthetic foot plate assembly workbench device of this embodiment is used for fixing and assembling the mid-ankle prosthetic foot plate.

[0029] The prosthetic foot in this embodiment includes a first foot plate 121 that can function as the forefoot, an arc-shaped second foot plate 131 that can function as a heel support, and a first connecting member 151 disposed on the top surface of the rear end of the first foot plate 121. The bottom surface of the rear end of the first foot plate 121 fits with the top of the second foot plate 131, and the second foot plate 131, the first foot plate 121 and the first connecting member 151 can be fixedly connected by a first locking bolt 141. The top surface of the first connecting member 151 is provided with a first connecting column 101 for connecting the ankle joint. The first foot plate 121 has a first opening groove extending longitudinally to at least the middle portion from the middle of the front end, and the second foot plate 131 has a second opening groove extending longitudinally from the middle of the rear end.

[0030] The prosthetic foot assembly workbench device of the present embodiment comprises a base 1, a gantry 2 and a limit assembly.

[0031] A baffle 8 is provided at the rear end of the base 1 to limit the longitudinal position of the prosthetic foot. The rear end of the second foot plate 131 abuts against the baffle 8, and the baffle 8 limits the longitudinal movement of the second foot plate 131 and positions the second foot plate 131. The front and rear parts of the surface of the base 1 are respectively provided with limiting bosses 7 corresponding to the first opening groove and the second opening groove, and the limiting bosses 7 extend into the corresponding opening grooves to position the first foot plate 121 and the second foot plate 131, prevent the first foot plate 121 and the second foot plate 131 from lateral displacement, and ensure that the first foot plate 121 and the second foot plate 131 are longitudinally aligned. Four clamping mechanisms 9 for fixing the prosthetic foot are provided on the base 1. Two of the clamping mechanisms 9 are arranged at the front of the base 1 and are respectively located on both sides of the first foot plate 121, for fixing the first foot plate 121; the remaining two clamping mechanisms 9 are arranged at the rear of the base 1 and are respectively located on both sides of the second foot plate 131, for fixing the second foot plate 131. The clamping mechanism 9 includes a clamping bolt 91 and a clamping block 93 through which the clamping bolt 91 can pass, and the clamping block 93 is used to clamp and fix the prosthetic foot plate under the action of the clamping bolt 91. The base 1 is provided with a plurality of bolt holes 92 that can cooperate with the clamping bolt 91, and are used to adjust the position of the clamping mechanism 9 to cooperate with the assembly of the prosthetic foot plate.

[0032] The gantry 2 is a space for the prosthetic foot to pass through (such as Figure 2 The first foot plate 121 shown in the figure passes through the gate-shaped structure of the gantry 2), including two supporting feet and a crossbeam fixedly connected to the top of the two supporting feet. The limiting assembly of this embodiment is a limiting plate 4 and an extension plate 3 that are fixedly connected up and down and whose relative positions are adjustable, and are used to cooperate with the assembly of the prosthetic foot plate. Two first slide grooves corresponding to the two supporting feet of the gantry 2 are provided in the longitudinal direction on the base 1, so that the gantry 2 can be moved longitudinally along the first slide groove to adjust the position of the gantry 2 fixedly installed on the base 1 and limit the lateral movement of the gantry 2. The gantry 2 can be fixedly installed at any position in the first slide groove to cooperate with the assembly of the prosthetic foot plate. A second slide groove is provided in the longitudinal direction on the top surface of the crossbeam of the gantry 2, so that the limiting assembly can be moved longitudinally along the second slide groove to adjust the position of the limiting assembly fixedly installed on the gantry 2 and limit the lateral movement of the limiting assembly. The limiting assembly 2 can be fixedly installed at any position in the second slide groove through the extension plate 3 to cooperate with the assembly of the prosthetic foot plate. A limiting guide post 10 corresponding to the first opening slot is provided on the bottom surface of the crossbeam of the gantry 2. The limiting guide post 10 extends into the first opening slot to position the first foot plate 121, prevent the first foot plate 121 from lateral displacement, and ensure that the first foot plate 121 and the second foot plate 131 are longitudinally aligned.

[0033] The end surface of one end of the limiting plate 4 is an inclined surface that can match the inclination of the side surface of the first connecting column 101, and a notch is formed at the end. The end of the limiting plate 4 where the notch is located is detachably fixedly connected to the first clamping plate 6. The first clamping plate 6 and one end of the limiting plate 4 are combined to form a through hole 5 for the first connecting column 101 to be inserted and clamped. The top surface of the limiting plate 4 is provided with a second clamping plate 11 for pressing the first connecting column 101 downward, and the bottom surface of one end of the second clamping plate 11 corresponds to the top surface of the first connecting column 101 in the through hole 5. The two ends of the bottom surface of the second clamping plate 11 are arc-shaped clamping surfaces, and the clamping surface at one end corresponds to the top surface of the first connecting column 101 in the through hole 5, eliminating the gap and controlling the direction and force position of the first connecting column 101. A threaded hole 111 is provided on the second clamping plate 11. The second clamping plate 11 is fixedly connected to the top surface of the limiting plate 4 by bolts and plays the role of pressing the first connecting column 101 downward. The force-bearing surface where the threaded hole 111 on the second clamping plate 11 is located and used for bolt-fixed connection is arc-shaped, which ensures the consistency of the clamping force transmission position and the correctness of the position of the first connecting column 101.

[0034] In this embodiment, the first connecting column 101 is a square cone, and accordingly, the through hole 5 is a square cone. Since the end surface of the limiting plate 4 at the through hole 5 is an inclined surface that can match the inclination of the side surface of the square cone of the first connecting column 101, the first clamping plate 6 can control and clamp the square cone of the first connecting column 101 after being provided.

[0035] When the prosthetic foot plate assembly workbench device of this embodiment is used for fixing and assembling the prosthetic foot plate of the mid-ankle, the longitudinal position of the gantry 2 on the base 1 can be adjusted first, so that the gantry 2, the base 1 and the components of the assembled prosthetic foot plate correspond and are fixed. The second foot plate 131 is placed on the base 1, the second opening groove of the second foot plate 131 corresponds to the limiting boss 7, the rear end of the second foot plate 131 is close to the baffle 8, and the clamping mechanism 9 clamps the second foot plate 131. The first foot plate 121 is placed on the base 1, the first opening groove of the first foot plate 121 corresponds to the limiting boss 7 and the limiting guide column 10, the rear end of the first foot plate 121 corresponds to the top of the second foot plate 131, and the clamping mechanism 9 fixes the first foot plate 121. The first connecting column 101 of the first connecting member 151 corresponds to the notch (through hole 5) at one end of the limiting plate 4, and the first clamping plate 6 and the second clamping plate 11 are clamped. The first locking bolt 141 is tightened to ensure the direction consistency requirement of the first foot plate 121, the second foot plate 131, the first connecting member 151 and the first connecting column 101 thereon.

[0036] Embodiment 2:

[0037] See also Figure 4 , Figure 5 The prosthetic foot plate assembly workbench device of this embodiment is used for fixing and assembling the prosthetic foot plate of the ankle.

[0038] The prosthetic foot plate in this embodiment includes a third foot plate 122 and a fourth foot plate 132. The third foot plate 122 is used as a sole plate and is arc-shaped. The fourth foot plate 132 can be used as a dorsal plate, and the front end of the fourth foot plate 132 can be fixedly connected to the middle front part of the third foot plate 122 by a second locking bolt 16 to form a roughly Y-shaped structure. The middle part of the third foot plate 122 bulges upward, pushing up the fourth foot plate 132, and the rear end of the fourth foot plate 132 is upturned. The rear end of the fourth foot plate 132 is installed with a second connecting member 152, and the second connecting member 152 can be fixedly connected to the fourth foot plate 132 by a third locking bolt 142. The top surface of the second connecting member 152 is provided with a second connecting column 102 for connecting the ankle joint. The third foot plate 122 is provided with a third longitudinal opening groove from the middle of the front end, and a fourth longitudinal opening groove from the middle of the rear end. The fourth foot plate 132 is provided with a fifth longitudinal opening groove from the middle of the front end.

[0039] The prosthetic foot plate assembly workbench device of this embodiment is similar to that of embodiment 1, and also includes a base 1, a gantry 2 and a limiting component, and the same or similar parts will not be repeated. The limiting component of this embodiment is a limiting plate 4, without an extension plate 3, which is used to cooperate with the assembly of the prosthetic foot plate. A baffle 8 is set at the rear end of the base 1 to limit the longitudinal position of the prosthetic foot plate. The rear end of the third foot plate 122 abuts against the baffle 8, and the baffle 8 limits the longitudinal movement of the third foot plate 122 and positions the third foot plate 122. The front and rear parts of the surface of the base 1 are respectively provided with limiting bosses 7 corresponding to the third opening groove and the fourth opening groove. The limiting bosses 7 extend into the corresponding opening grooves to position the third foot plate 122, prevent the third foot plate 122 from lateral displacement, and ensure that the third foot plate 122 and the fourth foot plate 132 are longitudinally aligned. Four clamping mechanisms 9 for fixing the prosthetic foot plate are provided on the base 1. Two of the clamping mechanisms 9 are arranged at the front of the base 1 and are respectively located on both sides of the front of the third foot plate 122, for fixing the front of the third foot plate 122; the remaining two clamping mechanisms 9 are arranged at the rear of the base 1 and are respectively located on both sides of the rear of the third foot plate 122, for fixing the rear of the third foot plate 122, thereby playing the role of stabilizing the third foot plate 122 as a whole. Because the base 1 is provided with a plurality of bolt holes 92 that can cooperate with the clamping bolts 91, the position of the clamping mechanism 9 can be adjusted to cooperate with the assembly of the prosthetic foot plate. The third foot plate 122 and the fourth foot plate 132 both pass through the gantry 2. The bottom surface of the crossbeam of the gantry 2 is provided with a limiting guide column 10 corresponding to the fifth opening slot, and the limiting guide column 10 extends into the fifth opening slot to position the fourth foot plate 132, prevent the fourth foot plate 132 from lateral displacement, and ensure that the fourth foot plate 132 and the third foot plate 122 are longitudinally aligned. One end face of the limiting plate 4 is an inclined surface that can cooperate with the inclination of the side surface of the second connecting column 102. The top surface of the limiting plate 4 is provided with a second pressing plate 11 for pressing the second connecting column 102 downwards, and the bottom surface of one end of the second pressing plate 11 contacts the top surface of the second connecting column 102 in the through hole 5 .

[0040] In this embodiment, the second connecting column 102 is a square cone, and accordingly, the through hole 5 is a square cone. Since the end surface of the limiting plate 4 at the through hole 5 is an inclined surface that can match the inclination of the side surface of the square cone of the second connecting column 102, the first clamping plate 6 can control and clamp the square cone of the second connecting column 102 after being provided.

[0041] When the prosthetic foot plate assembly workbench device of this embodiment is used for fixing and assembling the prosthetic foot plate of the ankle, the longitudinal position of the gantry 2 on the base 1 can be adjusted first, so that the gantry 2, the base 1 and the components of the assembled prosthetic foot plate correspond and are fixed. The third foot plate 122 is placed on the base 1, the third opening groove and the fourth opening groove of the third foot plate 122 correspond to the limiting boss 7, the rear end of the third foot plate 122 is close to the baffle 8, and the clamping mechanism 9 clamps the third foot plate 122. The fourth foot plate 132 is placed on the third foot plate 122, the fifth opening groove of the fourth foot plate 132 corresponds to the limiting guide column 10, the front end of the fourth foot plate 132 corresponds to the middle front part of the third foot plate 122, and is fixedly connected by the second locking bolt 16. The second connecting column 102 of the second connecting member 152 corresponds to the notch (through hole 5) at one end of the limiting plate 4, and the first clamping plate 6 and the second clamping plate 11 are clamped. The third locking bolt 142 is locked to ensure the direction consistency requirement of the third foot plate 122, the fourth foot plate 132 and the second connecting member 152 and the second connecting column 102 thereon.

[0042] In addition, it should be understood that after reading the above description of the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

Claims

1. A prosthetic foot assembly workbench device, the prosthetic foot comprising a foot plate and a connecting member for connecting the ankle joint and the foot plate, the connecting member being provided with a connecting column for connecting the ankle joint, characterized in that: The prosthetic foot plate assembly workbench device comprises a base, a gantry and a limit assembly; the gantry is a door-shaped structure through which the prosthetic foot plate can pass, comprising two supporting legs and a crossbeam fixedly connected to the tops of the two supporting legs; the limit assembly is a limit plate or a limit plate and an extension plate fixedly connected up and down, and is used for assembling different prosthetic foot plates; Two first slide grooves corresponding to the two supporting legs of the gantry are provided in the longitudinal direction of the base, so that the gantry can be moved longitudinally along the first slide grooves to adjust the position of the gantry fixedly installed on the base; the gantry can be fixedly installed at any position in the first slide grooves to match the assembly of different prosthetic foot plates; A second slide groove is provided on the top surface of the crossbeam in the longitudinal direction, so that the limit assembly can be moved longitudinally along the second slide groove to adjust the position where the limit assembly is fixedly installed on the gantry; the limit assembly can be fixedly installed at any position in the second slide groove through a limit plate or an extension plate to match the assembly of different prosthetic foot plates; The end face of one end of the limiting plate is an inclined surface that can match the inclination of the side surface of the connecting column and a notch is formed at this end. The end of the limiting plate where the notch is located is detachably fixedly connected to the first clamping plate, so that the notch forms a through hole or a slot for the connecting column to extend into and clamp.

2. The prosthetic foot assembly workbench device according to claim 1, characterized in that: The top surface of the limiting plate is provided with a second pressing plate for pressing the connecting column downwards, and the bottom surface of one end of the second pressing plate contacts the top surface of the connecting column in the through hole.

3. The prosthetic foot assembly workbench device according to claim 2, characterized in that: The two ends of the bottom surface of the second clamping plate are arc-shaped clamping surfaces, and the clamping surface at one end contacts the top surface of the connecting column in the through hole; The second clamping plate is provided with a threaded hole, and the second clamping plate is fixedly connected to the top surface of the limiting plate by bolts. The force-bearing surface of the second clamping plate where the threaded hole is located and used for bolt-fixed connection is arc-shaped.

4. The prosthetic foot assembly workbench device according to claim 1, characterized in that: One or more clamping mechanisms for fixing the prosthetic foot plate are arranged on the base.

5. The prosthetic foot assembly workbench device according to claim 4, characterized in that: The clamping mechanism includes a clamping bolt and a clamping block through which the clamping bolt can pass. The clamping block is used to clamp and fix the prosthetic foot plate under the action of the clamping bolt. The base is provided with multiple bolt holes that can cooperate with the clamping bolts to adjust the position of the clamping mechanism to cooperate with the assembly of different prosthetic foot plates.

6. The prosthetic foot assembly workbench device according to claim 1, characterized in that: A baffle is arranged at one end of the base to limit the longitudinal position of the prosthetic foot plate.

7. The prosthetic foot assembly workbench device according to claim 1, characterized in that: The prosthetic foot plate is provided with one or more opening grooves, and the base is provided with one or more limiting bosses corresponding to the one or more opening grooves, and the limiting bosses extend into the opening grooves to position the prosthetic foot plate.

8. The prosthetic foot assembly workbench device according to claim 1, characterized in that: The foot plate of the prosthetic foot is provided with one or more opening slots, and the bottom surface of the crossbeam is provided with one or more limiting guide posts corresponding to the one or more opening slots, and the limiting guide posts extend into the opening slots to position the prosthetic foot.

9. Use of the prosthetic foot assembly workbench device according to any one of claims 1 to 8 in fixing and assembling a prosthetic foot.

10. A method for fixing and assembling a prosthetic foot, characterized in that: The prosthetic foot plate is fixedly assembled using the prosthetic foot plate assembly workbench device described in any one of claims 1 to 8.

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