CN218899830U

CN218899830U - Artificial limb for animals

Info

Publication number: CN218899830U
Application number: CN202221885460.3U
Authority: CN
Inventors: 禹庭; 吴仲恒; 王敏; 付斌; 李俊; 梁旺胜
Original assignee: Guangzhou Weima Veterinary Technology Service Co ltd; Wuyi University
Current assignee: Guangzhou Weima Veterinary Technology Service Co ltd; Wuyi University
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2023-04-25
Anticipated expiration: 2032-07-20

Abstract

The utility model discloses an animal artificial limb, which relates to the technical field of artificial limb manufacturing, and comprises a fixed table, wherein two mounting plates are arranged on the fixed table and are arranged at opposite positions, the opposite surfaces of the two mounting plates are respectively provided with a matched curved surface, a plurality of through holes are formed in the surfaces of the mounting plates, and the through holes are distributed along the length direction of the mounting plates; and one end of the supporting part is connected with the fixed table, and the other end of the supporting part is provided with an elastic buffer sleeve. The artificial limb for animals has high fitting degree with the original bones of the animals and strong adaptability, and can improve the comfort degree of the animals after being implanted into the artificial limb.

Description

Artificial limb for animals

Technical Field

The utility model relates to the technical field of artificial limb manufacturing, in particular to an animal artificial limb.

Background

Nowadays, prostheses not only change the life of disabled persons, but disabled individuals in mammals also become beneficiaries. Dogs or cats that develop severe cancer requiring amputation lose limbs due to various causes, such as natural limb abnormalities, or fall from high places, or are crushed. These animals can regain their new form after installation of the implanted prosthesis.

Like human prostheses, animal prostheses must also be individually adapted to the form of the individual wearing them. During implantation of a human prosthesis, a physician may verbally communicate with the patient, teaching the patient how to use the prosthesis, and where pain or discomfort may be felt after wear, without the animal being able to feedback through speech. In addition, there is a great difference in the body type and weight of different species, and it is also necessary to take into account the animal's habit.

Although the details of the technology for making animal prostheses vary, the standard procedure is to make plaster models first, design animal prostheses from photographs and videos taken, and then make them from durable thermoplastics and metals. The details are manually adjusted during the manufacturing process, which is not easy, until the prosthesis is suitable for the animal, which requires a long period of time.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the artificial limb for the animal is high in fitting degree with the original bone of the animal, strong in adaptability and capable of improving the comfort degree of the animal after the artificial limb is implanted.

An animal prosthesis according to an embodiment of the present utility model includes: the fixing table is provided with two mounting plates, the two mounting plates are arranged at opposite positions, the opposite surfaces of the two mounting plates are respectively provided with a matched curved surface, the surfaces of the mounting plates are provided with a plurality of through holes, and the through holes are distributed along the length direction of the mounting plates;

and one end of the supporting part is connected with the fixed table, and the other end of the supporting part is provided with an elastic buffer sleeve.

The artificial limb for animals according to the embodiment of the utility model has at least the following beneficial effects: the mounting plate is used for clamping two sides of normal bones of animals, and a plurality of through holes are formed in the surface of the mounting plate and can be penetrated by fixing nails to fix the mounting plate on the normal bones of the animals; the matching curved surface is matched with the normal bone surface of the animal, so that the gap between the normal bone of the animal and the mounting plate is reduced, and the wearing comfort of the animal is improved; the surface of one side of the fixing table provided with the mounting plate is contacted with the end part of the normal animal bone, so that the stability is improved; the end of the supporting part is provided with a buffer sleeve to simulate the structural buffer of normal limbs of animals and improve the comfort level of animal walking.

According to some embodiments of the utility model, the mating curved surface is provided with a porous first structural layer, and the first structural layer has a net structure.

According to some embodiments of the utility model, the surface of the fixing table on one side of the mounting plate and the surface of the connecting part of the fixing table and the supporting part are both provided with a porous second structural layer, and the second structural layer is in a net structure.

According to some embodiments of the utility model, the fixing table, the mounting plate and the supporting portion are of an integrated structure.

According to some embodiments of the utility model, a connector is provided at one end of the supporting portion for connecting the buffer sleeve, a plurality of stop planes are provided on the side wall of the connector, a mounting cavity matched with the connector is correspondingly provided in the buffer sleeve, the mounting cavity is provided with an opening communicated with the outside, and the size of the opening is smaller than the outer diameter of the connector, so that the buffer sleeve can be sleeved on the connector.

According to some embodiments of the utility model, the first structural layer has a thickness of 0.5 to 0.8mm.

According to some embodiments of the utility model, the through hole is a counter bore.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic diagram of the structure of an animal prosthesis according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a mounting board and a first structural layer according to an embodiment of the present utility model;

FIG. 3 is an enlarged schematic view of a fixed table according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a connector according to an embodiment of the utility model.

Reference numerals:

the fixing table 100, the mounting plate 110, the mating curved surface 111, the through hole 120, the supporting portion 200, the buffer cover 210, the connector 220, the stop plane 221, the first structural layer 300 and the second structural layer 400.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, plural means two or more. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1, the animal prosthesis according to an embodiment of the present utility model includes a fixing table 100, two mounting plates 110 are provided on the fixing table 100, the two mounting plates 110 are provided at opposite positions, opposite surfaces of the two mounting plates 110 are provided with a curved surface 111, a plurality of through holes 120 are provided on a surface of the mounting plate 110, and the through holes 120 are distributed along a length direction of the mounting plate 110;

and a supporting part 200, wherein one end of the supporting part 200 is connected with the fixed table 100, and the other end is provided with an elastic buffer sleeve 210.

The mounting plate 110 is used for clamping two sides of normal bones of animals, and a plurality of through holes 120 are formed in the surface of the mounting plate 110 and can be penetrated by fixing nails to fix the mounting plate 110 on the normal bones of the animals; the matching curved surface 111 is matched with the normal bone surface of the animal to reduce or even eliminate the gap between the normal bone of the animal and the mounting plate 110, so that the wearing comfort of the animal is improved; the surface of one side of the fixing table 100 provided with the mounting plate 110 is contacted with the end part of the normal bone of the animal, so that the stability is improved; the end of the supporting part 200 is provided with a buffer sleeve 210 to simulate the structural buffer of the normal limb of the animal, thereby improving the walking comfort of the animal.

Referring to fig. 2, it can be understood that the curved surface 111 is provided with a porous first structural layer 300, and the first structural layer 300 has a mesh structure.

The first structural layer 300 is provided with a plurality of holes, so that the first structural layer is formed into a net-shaped structural layer, space is provided, normal bones of animals grow into net-shaped gaps of the first structural layer 300, biological combination is formed, and the implantation stability and the use comfort of the artificial limb for the animals are improved.

Referring to fig. 3, it can be understood that the surface of the fixing base 100 on the side of the mounting plate 110 and the surface of the junction between the fixing base 100 and the supporting portion 200 are both provided with a porous second structural layer 400, and the second structural layer 400 has a mesh structure.

The second structural layer 400 is provided with a plurality of holes so as to form a net-shaped structural layer, so that space is provided, and normal bone ends of animals can also grow into the second structural layer 400 on the surface of the fixing table 100 on the side provided with the mounting plate 110 to form biological combination; the skin of the animal also forms a biological bond with the second structural layer 400 on the surface where the stationary table 100 is connected to the support 200. Further improving the implantation stability of the artificial limb for animals.

It is understood that the fixing table 100, the mounting plate 110 and the supporting portion 200 are integrally formed.

The fixing table 100, the mounting plate 110 and the supporting part 200 are integrated, and compared with the assembly, the service life of the integrated structure is longer, and each part is not easy to separate, so that the integrated structure is more suitable for animals, because the animals have no thinking, and faults generated by the artificial limb for the animals cannot be found in time in the wearing process. In addition, the integrated structure of the fixing table 100, the mounting plate 110 and the supporting portion 200 is preferably made of metal, and particularly, one material of titanium alloy, pure titanium or stainless steel is used.

Referring to fig. 4, it can be understood that one end of the supporting portion 200 for connecting the buffer sleeve 210 is provided with a connector 220, a plurality of stop planes 221 are provided on a side wall of the connector 220, a mounting cavity matched with the connector 220 is correspondingly provided in the buffer sleeve 210, and the mounting cavity has an opening communicated with the outside, and the size of the opening is smaller than the outer diameter of the connector 220, so that the buffer sleeve 210 can be sleeved on the connector 220.

The buffer sleeve 210 is used for simulating the structural buffer of normal limbs of animals and improving the walking comfort of the animals. In order to improve the reliability of the buffer sleeve 210 and avoid falling, a plurality of stop planes 221 are arranged on the side wall of the connector 220, corresponding mounting cavities are arranged in the buffer sleeve 210, and after the buffer sleeve 210 is sleeved on the connector 220, the stop planes 221 can limit the buffer sleeve 210 to automatically rotate around the shaft (the non-spherical surface cannot rotate), so that the buffer sleeve 210 is prevented from loosening and falling. In addition, the installation cavity has an opening communicating with the outside, the size of the opening is smaller than the outer diameter of the connector 220, and the connector 220 needs to be inserted into the installation cavity from the opening to be sleeved with the buffer sleeve 210. Since the buffer sleeve 210 has elasticity, the opening is elastically deformed to enlarge the size of the buffer sleeve, after the connector 220 is placed in the mounting cavity, the original size of the opening is restored, and the connector 220 is clamped in the mounting cavity, so that the buffer sleeve 210 is sleeved on the connector 220.

It is understood that the thickness of the first structural layer 300 is 0.5 to 0.8mm.

If the thickness of the first structural layer 300 is less than 0.5mm, the depth for normal bone growth and biological bonding of the animal is shallow, and the obtained stability is not optimal; if the thickness is greater than 0.8mm, normal animal bones cannot completely grow and fill the first structural layer 300, resulting in space waste, and the first structural layer 300 cannot be filled with normal animal bones, and cannot obtain optimal stability. Of course, the optimal thickness of the second structural layer 400 may be set to 0.5 to 0.8mm.

It is understood that the through hole 120 is a countersunk hole.

Generally, after the fixing nail is fixed to the normal bone of the animal through the through hole 120, the tail end of the fixing nail is flush with the surface of the mounting plate 110, so that the protrusion of the fixing nail is prevented from decreasing comfort. After the through holes 120 are arranged as countersunk holes, the adjustable range of the fixing nails is wider, and the fixing nails are convenient to install.

The artificial limb for animals can be designed and manufactured through the following steps: step S1, scanning a diseased bone of an animal by using CT scanning equipment, acquiring scanning data, importing the scanning data into modeling software, and reconstructing according to the scanning data to obtain a three-dimensional model of the animal bone;

s2, adjusting and repairing the three-dimensional model of the animal bone, cutting off the bone of the lesion necrosis part, and reserving normal bone for installing an animal artificial limb;

and S3, selecting the surface characteristics of the normal bone three-dimensional model to be used for designing the artificial limb for the animal based on the reserved normal bone three-dimensional model.

It is understood that in step S3, further includes: s31, selecting surface features of one side of a normal bone three-dimensional model, performing offset stretching operation to obtain an anastomotic mounting plate, selecting surface features of the opposite side, and performing offset stretching operation to obtain an anastomotic opposite side mounting plate, so that the two mounting plates can clamp and attach to the normal bone;

step S32, selecting the surface facing the normal bone side on the mounting plate, and loading a porous first structural layer in the physical direction of the mounting plate, wherein the first structural layer is of a net structure.

In this scheme, the three-dimensional model is in STL format. And scanning the diseased bone of the animal by using CT scanning equipment, obtaining scanning data, importing the scanning data into modeling software, reconstructing according to the scanning data to obtain a three-dimensional model of the animal bone, and storing the three-dimensional model as an STL format file. And opening the STL format file in design software, further trimming the three-dimensional model, deleting a single separated shell and smoothing the model to obtain the complete three-dimensional model of the animal bone. And continuing to process the three-dimensional model, cutting and removing the lesion part in the animal bone, and reserving the rest normal bone for installing the artificial limb for the animal.

Based on the three-dimensional model of the normal bone, selecting the surface characteristics of one side of the three-dimensional model of the normal bone to carry out offset stretching operation to obtain a mounting plate which is anastomotic with the normal bone, and selecting the surface characteristics of the opposite side to carry out offset stretching operation to obtain an anastomotic opposite side mounting plate, so that the two mounting plates can clamp and be attached with the normal bone. The fixing table is added at the end part of the normal bone and is connected with the mounting plate, the supporting part is continuously designed, one end of the supporting part is connected with the fixing table, the other end of the supporting part is designed into a spherical-like connector, and four square planes are designed on the side wall of the connector and serve as stop planes.

And selecting the surface facing the normal bone side on the mounting plate, extracting a solid layer with the thickness of 0.5mm towards the direction of the entity of the mounting plate, and introducing the solid layer into porous structure design software to convert the solid layer into a porous structure layer, namely a first structure layer. The design of the second structural layer is equivalent.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims

1. An animal prosthesis comprising:

the fixing table (100), two mounting plates (110) are arranged on the fixing table (100), the two mounting plates (110) are arranged at opposite positions, the opposite surfaces of the two mounting plates (110) are respectively provided with a matched curved surface (111), a plurality of through holes (120) are formed in the surface of the mounting plate (110), and the through holes (120) are distributed in a arrayed mode along the length direction of the mounting plate (110);

and one end of the supporting part (200) is connected with the fixed table (100), and the other end of the supporting part is provided with an elastic buffer sleeve (210).

2. The animal prosthesis of claim 1, wherein: the matching curved surface (111) is provided with a porous first structural layer (300), and the first structural layer (300) is of a net-shaped structure.

3. The animal prosthesis of claim 1, wherein: the fixing table (100) is provided with a surface on one side of the mounting plate (110) and a surface at the joint of the fixing table (100) and the supporting part (200), and is provided with a porous second structural layer (400), and the second structural layer (400) is of a net structure.

4. The animal prosthesis of claim 1, wherein: the fixing table (100), the mounting plate (110) and the supporting part (200) are of an integrated structure.

5. The animal prosthesis of claim 1, wherein: the supporting part (200) is used for being connected one end of the buffer sleeve (210) is provided with a connector (220), a plurality of stop planes (221) are arranged on the side wall of the connector (220), an installation cavity matched with the connector (220) is correspondingly formed in the buffer sleeve (210), the installation cavity is provided with an opening communicated with the outside, and the size of the opening is smaller than the outer diameter of the connector (220), so that the buffer sleeve (210) can be sleeved on the connector (220).

6. The animal prosthesis of claim 2, wherein: the thickness of the first structural layer (300) is 0.5-0.8 mm.

7. The animal prosthesis of claim 1, wherein: the through hole (120) is a countersunk hole.