Artificial limb shell and artificial limb
Through the integrated molded cylindrical prosthetic shell design, the deformable blades are used to intercept and fix the prosthetic body, which solves the problem of complex design of existing prosthetic shells and easy wear and wear of fixing components, achieving the effect of simplifying wear and reducing maintenance.
Patent Information
- Application Number
- CN202421824537.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-07-30
AI Technical Summary
The existing prosthetic shell has a complex design, a cumbersome wear process, and the fixing components are prone to wear, requiring regular inspection and replacement, which increases maintenance trouble.
The integrated cylindrical prosthesis shell design is designed, with deformable blades convexly on the inner wall. The blades are arranged in circumference and enclosed to form an occlusal cavity. The occlusal fixation between the blades and the prosthesis body reduces dependence on the external fixation components.
The wearable steps are simplified, the complexity of maintenance and the wear of fixed components are reduced, and the stable connection between the prosthetic shell and the prosthetic body is improved, adapting to the use needs of different users.
Smart Images
Figure CN223041678U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, and particularly relates to a prosthetic shell and a prosthetic limb. Background Art
[0002] At present, in order to adapt to the shapes and sizes of different prosthetic limbs, most prosthetic shells usually adopt a split design, that is, they are composed of a front shell and a rear shell. When wearing, the front shell and the rear shell need to be respectively wrapped around the front and rear ends of the prosthetic limb, and then the front shell and the rear shell are connected together through a special fixing component. Not only is the wearing process relatively complicated, but also over time, the fixing component may wear or break, and regular inspection and replacement are required, increasing the trouble of maintenance. Summary of the Utility Model
[0003] The main purpose of the utility model is to propose a prosthetic shell, aiming to solve the problems of complex wearing of the prosthetic shell and the need to repair the fixing component.
[0004] To achieve the above purpose, the prosthetic shell proposed by the utility model is an integrally formed cylindrical structure. A deformable blade is convexly provided on the inner wall of the prosthetic shell. The blades are circumferentially arranged on the inner wall of the prosthetic shell and enclose a biting cavity. The cross-sectional area of the biting cavity is smaller than the cross-sectional area of the prosthetic limb body to be sleeved.
[0005] In one embodiment, the blade is a spiral blade.
[0006] In one embodiment, the spiral blade includes a plurality of sub-blades. The plurality of sub-blades are circumferentially arranged on the inner wall of the prosthetic shell and are respectively spirally arranged from top to bottom.
[0007] In one embodiment, the spiral blade is a single blade, and the single spiral blade spirally extends from top to bottom along the inner peripheral wall of the prosthetic shell.
[0008] In one embodiment, the blade is an annular blade, and the annular blades are arranged at intervals up and down on the inner peripheral wall of the prosthetic shell.
[0009] In one embodiment, the material of the blade is an elastoplastic material.
[0010] In one embodiment, the blade is arranged at the middle position of the prosthetic shell.
[0011] In one embodiment, a first receiving cavity is enclosed above the blade of the prosthetic shell, and a second receiving cavity is enclosed below the blade. Define the height of the first receiving cavity as H1, the height of the biting cavity as H2, and the height of the second receiving cavity as H3. H1 / H2 = 1 / 2 - 2, H3 / H2 = 1 / 2 - 2.
[0012] In one embodiment, the inner wall of the prosthetic shell further protrudes with circumferentially arranged reinforcing ribs, and the reinforcing ribs are located at the lower end of the prosthetic shell; at least two circumferentially arranged screw mounting holes are formed in the side wall of the prosthetic shell.
[0013] The present utility model further provides a prosthetic limb, which includes a prosthetic limb body and the above-mentioned prosthetic shell. The cross-sectional area of the occlusion cavity formed by enclosing the blades in the prosthetic shell is smaller than the cross-sectional area of the prosthetic limb body. The prosthetic shell is sleeved on the prosthetic limb body and is fixedly occluded with the prosthetic limb body through the blades.
[0014] This prosthetic shell is a 3D printed one-piece molding structure, presenting a hollow cylinder with openings at both ends. The inner wall of the prosthetic shell protrudes with deformable blades. The blades are circumferentially arranged on the inner wall of the prosthetic shell and enclose to form an occlusion cavity. The cross-sectional area of the occlusion cavity is smaller than the cross-sectional area of the sleeved prosthetic limb body. When the prosthetic limb body is inserted, the prosthetic limb body will squeeze the blades, causing the blades to deform and expand. The deformed blades can tightly bite the prosthetic limb body, thus realizing the stable connection between the prosthetic shell and the prosthetic limb body, reducing the dependence on external fixing components and simplifying the wearing steps. In addition, the deformable characteristics of the blades enable the prosthetic shell to adaptively adjust according to the shape and size of the prosthetic limb body, so as to meet the usage requirements of different users. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.
[0016] Figure 1 It is a schematic cross-sectional structure view of the first embodiment of the prosthetic shell provided by the present utility model;
[0017] Figure 2 It is a top view of the first embodiment of the prosthetic shell provided by the present utility model;
[0018] Figure 3 It is a bottom view of the first embodiment of the prosthetic shell provided by the present utility model;
[0019] Figure 4 It is a schematic structure view of the second embodiment of the prosthetic shell provided by the present utility model after half of the shell is cut off;
[0020] Figure 5This is a schematic structural diagram of the prosthetic limb housing of the third embodiment of the present utility model after half of the housing is cut away.
[0021] Explanation of the reference numerals in the drawings:
[0022] 100, prosthetic limb housing; 1, blade; 2, reinforcing rib; 3, screw mounting hole.
[0023] The realization of the purpose, functional characteristics and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments
[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.
[0025] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0026] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.
[0027] At present, in order to adapt to the shapes and sizes of different prostheses, most of the prosthetic shells usually adopt a split design, that is, they are composed of a front shell and a rear shell. When wearing, the front shell and the rear shell need to be respectively wrapped around the front and rear ends of the prosthesis, and then the front shell and the rear shell are connected together through a special fixing component. Not only is the wearing process relatively complex, but also over time, the fixing component may wear or break, requiring regular inspection and replacement, increasing the trouble of maintenance.
[0028] To solve the above problems, the present utility model proposes a prosthetic shell 100.
[0029] Please refer to Figures 1 to 3 , this prosthetic shell 100 is an integrally formed cylindrical structure. The inner wall of the prosthetic shell 100 is convexly provided with deformable blades 1. The blades 1 are arranged circumferentially on the inner wall of the prosthetic shell 100 and enclose a biting cavity. The cross-sectional area of the biting cavity is smaller than the cross-sectional area of the prosthetic body to be sleeved.
[0030] This prosthetic shell 100 is a 3D printed integrally formed structure, presenting a hollow cylinder with both ends open. The inner wall of the prosthetic shell 100 is convexly provided with deformable blades 1. The blades 1 are arranged circumferentially on the inner wall of the prosthetic shell 100 and enclose a biting cavity. The cross-sectional area of the biting cavity is smaller than the cross-sectional area of the prosthetic body to be sleeved. When the prosthetic body is inserted, the prosthetic body will squeeze the blades 1, causing the blades 1 to deform and expand. The deformed blades 1 can tightly bite the prosthetic body, thus realizing the stable connection between the prosthetic shell 100 and the prosthetic body, reducing the dependence on external fixing components, and simplifying the wearing steps. In addition, the deformable characteristics of the blades 1 enable the prosthetic shell 100 to adaptively adjust according to the shape and size of the prosthetic body, so as to meet the usage requirements of different users.
[0031] In some embodiments of the present utility model, the blade 1 is a spiral blade. The friction between the spiral blade and the prosthetic body can, to a certain extent, resist the rotation of the prosthetic shell 100, thereby enhancing the connection stability between the prosthetic shell 100 and the prosthetic body, and ensuring that the prosthetic shell 100 will not twist during daily walking.
[0032] In Figure 4 In the illustrated embodiment, the spiral blade can be a single blade, and the single spiral blade is spirally arranged from top to bottom along the inner peripheral wall of the prosthetic shell 100. In Figures 1 to 3In the illustrated embodiment, the spiral blade includes four sub - blades. The four sub - blades are circumferentially arranged on the inner wall of the prosthetic shell 100 and are spirally arranged from top to bottom. Of course, in actual applications, the number of sub - blades can be three, five or more, which is not limited herein. The spiral blade in this embodiment is composed of four sub - blades spirally, which can reduce the strength of the spiral blade, enabling the spiral blade to have better deformation ability, so as to better adapt to the irregular shape of the prosthetic body.
[0033] In Figure 5 the illustrated embodiment, the blade 1 can be an annular blade. At this time, a plurality of annular blades are provided, and the plurality of annular blades are arranged at intervals up and down on the inner peripheral wall of the prosthetic shell 100, and the above - mentioned effect can also be achieved.
[0034] In this technical solution, the prosthetic shell 100 and the blade 1 are integrally formed by 3D printing. The material of the blade 1 is an elastoplastic material, such as thermoplastic elastomer (TPE), thermoplastic polyurethane (TPU), thermoplastic vulcanizate (TPV), etc. These materials not only have high wear resistance, high impact strength and certain elastoplastic properties, but also are high - quality materials for 3D printing, which can meet the requirements of the deformability and strength support of the blade 1.
[0035] Among them, the blade 1 is arranged at the middle position of the prosthetic shell 100, which can concentrate the acting force between the prosthetic shell 100 and the prosthetic body at the middle of the prosthetic shell 100, avoiding the risk of the shell falling off or instability caused by force concentration at the upper or lower part.
[0036] A first receiving cavity is formed by enclosing above the blade 1 on the prosthetic shell 100, and a second receiving cavity is formed by enclosing below the blade 1. Define the height of the first receiving cavity as H1, the height of the occlusal cavity as H2, and the height of the second receiving cavity as H3. Among them, H1 / H2 = 1 / 2 - 2, H3 / H2 = 1 / 2 - 2.
[0037] When H1 / H2 = 1 / 2 and H3 / H2 = 1 / 2, the heights of the first receiving cavity and the second receiving cavity are half of the height of the occlusal cavity. At this time, the prosthetic shell 100 and the prosthetic body have a large occlusal area, and the connection stability between the two is good; when H1 / H2 = 2 and H3 / H2 = 2, the height of the occlusal cavity is half of the heights of the first receiving cavity and the second receiving cavity. At this time, the volume of the blade 1 can be reduced, the overall weight of the prosthetic shell 100 can be reduced, and the requirement that the prosthetic shell 100 and the prosthetic body do not fall off can be met.
[0038] The inner wall of the prosthetic shell 100 is also convexly provided with circumferentially arranged reinforcing ribs 2. The reinforcing ribs 2 are arranged at the lower end of the prosthetic shell 100 and are used to abut against the circumferential side wall of the prosthetic body, so as to avoid shaking below and improve the stability of the prosthetic shell 100 during use.
[0039] Furthermore, at least two circumferentially arranged screw mounting holes 3 are formed in the side wall of the prosthetic limb housing 100, and screw holes corresponding to the screw mounting holes 3 are provided on the prosthetic limb body. Thus, screws can be used to reinforce the connection between the prosthetic limb housing 100 and the prosthetic limb body.
[0040] The present utility model also provides a prosthetic limb, which includes a prosthetic limb body and a prosthetic limb housing 100. The specific structure of the prosthetic limb housing 100 refers to the above embodiments. Since this prosthetic limb adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated herein one by one. Among them, the cross-sectional area of the occlusion cavity formed by enclosing the blades 1 in the prosthetic limb housing 100 is smaller than the cross-sectional area of the prosthetic limb body. The prosthetic limb housing 100 is sleeved on the prosthetic limb body and is occluded and fixed to the prosthetic limb body through the blades 1.
[0041] The above are only exemplary embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.
Claims
1. A prosthetic shell, characterized in that: The prosthetic shell is an integrally formed cylindrical structure, the inner wall of which is protrudingly provided with deformable blades, which are circumferentially arranged on the inner wall of the prosthetic shell and enclose a bite cavity, the cross-sectional area of which is smaller than the cross-sectional area of the prosthetic body mounted thereon.
2. The prosthesis shell according to claim 1, characterized in that: The blades are spiral blades.
3. The prosthesis shell according to claim 2, characterized in that: The spiral blade includes a plurality of sub-blades, which are circumferentially arranged on the inner wall of the prosthesis shell and are respectively arranged in a spiral from top to bottom.
4. The prosthesis shell according to claim 2, characterized in that: The spiral blade is a single blade, and the single spiral blade is spirally arranged from top to bottom along the inner peripheral wall of the prosthesis shell.
5. The prosthesis shell according to claim 1, characterized in that: The blades are annular blades, and the annular blades are arranged at intervals up and down on the inner peripheral wall of the prosthesis shell.
6. The prosthesis shell according to claim 1, characterized in that: The material of the blade is an elastic-plastic material.
7. The prosthesis shell according to claim 1, characterized in that: The blade is arranged at a middle position of the prosthesis shell.
8. The prosthesis shell according to claim 7, characterized in that: The prosthetic shell is enclosed above the blade to form a first receiving cavity, and is enclosed below the blade to form a second receiving cavity. The height of the first receiving cavity is defined as H1, the height of the occlusal cavity is defined as H2, and the height of the second receiving cavity is defined as H3. H1 / H2=1 / 2~2, H3 / H2=1 / 2~2.
9. The prosthesis shell according to claim 7, characterized in that: The inner wall of the prosthesis shell is also provided with circumferentially arranged reinforcing ribs, and the reinforcing ribs are located at the lower end of the prosthesis shell; The side wall of the prosthesis shell is provided with at least two circumferentially arranged screw mounting holes.
10. A prosthesis, characterized in that: It comprises a prosthesis body and a prosthesis shell as described in any one of claims 1 to 9, the cross-sectional area of the occlusal cavity enclosed by the blades in the prosthesis shell is smaller than the cross-sectional area of the prosthesis body, the prosthesis shell is sleeved on the prosthesis body and is occluded and fixed to the prosthesis body by the blades.