TWI675650B - 3D printing animal implantable prosthesis - Google Patents

Abstract

The invention relates to an animal-implantable prosthesis, which is an implant prosthesis implanted in a bone marrow cavity below an animal's calcaneus, and is characterized in that it comprises a fixing screw, which is provided with a thread, and can be locked into the bone marrow by the thread. In the bone of the cavity, increase the bite force between the implant and the bone marrow cavity; the base of the screw is a convex rod located at the base of the fixed screw, and the bottom of the convex rod has a thickened structure; the flange, an umbrella-shaped outer structure And has a large number of holes; the bridge base, an asymmetric shape, and a hole through which screws can pass; and the interface, the interface between the flange and the bridge base, which are increased in thickness by a hierarchical arc. With the present invention, a customized animal-implantable prosthesis can be obtained, thereby increasing the stability and closeness between the prosthesis and the living body.

Description

3D printing animal implant prosthesis

The invention relates to a 3D printed animal implantable prosthesis and a manufacturing method thereof. Specifically, the invention relates to a method for increasing stability and closeness between an implant and a living body, and dispersing the implant in and between bones. Animal-implanted prostheses with stress gaps and increased protection of the bone marrow cavity.

When an animal's limbs need to be truncated, wearing auxiliary belts or external assistance are traditionally used. However, these structures do not have sufficient support to allow the animals to move substantially freely.

In addition, other prosthetic limbs currently used are only externally mounted on the affected part of the animal, which has the possibility of loosening and poor comfort.

In addition, in addition to the above problems, for the target animal, customized prosthetics cannot be provided on the market. Therefore, there is still a need for a specification that can meet the use of the target animal and can increase the stability between the implant and the organism. Animal implantable prosthesis with tightness, stress difference between the bone inside and outside the bone caused by scattered implants, and increased protection of the bone marrow cavity.

In view of the above problems, the present invention aims to provide a 3D printed animal implant. Type prosthesis and manufacturing method thereof, which can increase the stability and closeness between the implant and the living body, disperse the stress difference between the implant and the bone, and increase the protection of the bone marrow cavity. Prosthetic.

To achieve the foregoing object, the present invention provides the following technical means.

[1] An animal-implantable prosthesis, which is an implant prosthesis implanted in the bone marrow cavity below the animal's calcaneus, which is characterized by: a fixed screw with a thread, and the bone marrow cavity can be locked by the thread In the bone, increase the bite force between the implant and the bone marrow cavity; the base of the screw is a convex rod located at the base of the fixed screw, and the bottom of the convex rod is a thickened structure; the flange and the umbrella-shaped outer structure, It has a large number of holes; the bridge base has an asymmetrical shape, and there is a hole through which the screw can pass; and the interface, the interface between the flange and the bridge base, are thickened by a layered arc shape.

[2] The animal-implantable prosthetic limb as described in the above item 1, wherein it is made of metal.

[3] The animal-implantable prosthetic limb according to the item 2, wherein the aforementioned metal material is titanium.

[4] The animal-implanted prosthetic limb as described in the above item 1, wherein the fixed screw system does not polish the surface, and provides a space for bone cell growth through a rough surface, increasing the stability and closeness between the implant and the living body.

[5] The animal-implantable prosthetic limb according to the preceding paragraph 1, wherein the aforementioned screw base, The bottom of the tie rod is added with two layers of increasing thickness to spread the stress gap between the implant and the bone.

[6] The animal-implantable prosthesis as described in the above item 1, wherein the protruding portion of the umbrella-shaped structure of the aforementioned flange can be used to limit the depth of screw implantation and increase the protection of the bone marrow cavity.

[7] A method for manufacturing an animal-implantable prosthetic limb according to any one of the foregoing paragraphs 1 to 6, which includes the following steps: Step A. 3D tomography scans the bone marrow cavity below the calcaneus of the animal to obtain 3D tomographic data of the target animal; Step B, perform 3D printing according to the 3D tomographic data of Step A to make the fixed screw and the screw base so that the specifications of the fixed screw and the screw base can be implanted into the bone marrow cavity; step C, 3D print to make the convex The margin, the aforesaid bridge base and the aforementioned interface enable the specifications of the aforementioned flange to be implanted into the bone marrow cavity.

According to the present invention of [1] to [6], it is possible to provide an increase in stability and closeness between the implant and the living body, a stress gap generated by the scattered implant between and outside the bone, and increase protection of the bone marrow cavity. Animal implant prosthesis.

According to the invention of [7], a method for manufacturing a 3D printed animal implantable prosthesis can be provided.

1‧‧‧ animal implant prosthesis

A‧‧‧fixed screw

B‧‧‧Screw base

C‧‧‧ flange

D‧‧‧ interface

E‧‧‧bridge

[Fig. 1] A diagram showing an animal implantable prosthesis according to the present invention.

[Fig. 2] A structural diagram showing an animal-implantable prosthesis according to the present invention.

[Fig. 3] An X-ray picture showing before and after implantation of an animal-implantable prosthesis of the present invention.

[Fig. 4] A diagram showing the completion of the animal implantable prosthesis implantation of the present invention.

[Fig. 5] A photograph showing the artificial foot mounted on the bridge foundation after the implantable prosthetic animal of the present invention is implanted.

The animal implantable prosthesis of the present invention includes a fixed screw, a screw base, a flange, a bridge base, and an interface (see FIG. 1).

The animal implantable prosthesis of the present invention is made of metal material.

The aforementioned metal material is not particularly limited, and is preferably a titanium metal.

The aforesaid fixed screw is provided with a thread, and the height and spacing of the thread can be a conventional standard, and the width and length are customized by analyzing the depth and width of the bone marrow cavity by 3D tomography.

The width of the thread is the widest part of the bone marrow cavity, and the length is the length from the cut surface of the predetermined bone to the bottom of the bone marrow cavity.

With the thread, the animal implantable prosthesis of the present invention can be locked into the bone, increasing the bite force between the implant and the bone marrow cavity.

In addition, since the metal surface is not polished, the rough surface can provide better growth space for bone cells, thereby increasing the stability and adhesion between the implant and the organism.

The screw base is a convex rod located at the base of the fixed screw, and the bottom of the convex rod has a thickened structure. With the thickened structure, the stress gap created by the implant within and outside the bone can be dispersed.

The screw base is not limited as long as it has a thickened structure, but it is better to add a two-layer incremental thickened structure to the bottom of the convex rod, and a multilayer thickened structure can be added according to demand.

The aforementioned flange is an umbrella-shaped external structure and is provided with most holes. By setting the holes, sutures can be passed through the holes to fix the muscles there, so that the muscles can cover the bones and increase the adhesion of soft tissues. force.

In addition, with the aforementioned flange-shaped umbrella-shaped structure, the umbrella-shaped protrusions can not only limit the depth of screw implantation, but also increase the protection of the bone marrow cavity to prevent bone marrow from being infected.

The aforesaid bridge base is shown in FIG. 2 in an asymmetrical shape, and a hole through which a screw passes is provided below it.

By designing the aforesaid bridge foundation into an asymmetric shape, the problem of instability caused by the rotation of the artificial foot after the completion of the design when it is designed to be circular can be avoided; situation.

The aforementioned interface is an interface between the aforementioned flange and the aforementioned bridge base, and it is a cushioning design to avoid the fracture of the animal-implanted prosthetic limb.

Through the aforementioned interface setting, the layered arc shape can increase the thickness to avoid breakage, and can also be used to restrict the artificial foot installed on the bridge foundation from directly pressing on the skin of the animal.

[Example]

Next, specific embodiments of the present invention will be described, but the present invention is not particularly limited to those embodiments.

[Example 1]

Example 1 involves implanting an animal-implantable prosthesis of the present invention in a cat's calcaneus.

First, after the problematic metacarpal is removed, the bone marrow cavity below the calcaneus is exposed. After 3D tomography of the site, 3D printing is performed on the fixed screw, the screw base, the flange, the interface, and the bridge base to obtain The animal implantable prosthesis of the present invention.

Next, the animal-implantable prosthesis of the present invention is locked into the calcaneus, the fixed screw and the screw base are located in the bone marrow cavity, the flange completely covers the bone marrow cavity opening, and the edge of the skin is located between the flange and the interface .

The differences and positions of the animal implantable prosthesis according to the present invention before and after implantation are shown in FIG. 3.

After the animal-implantable prosthetic device of the present invention is completed, as shown in FIG. 4, the skin edge of the animal is located between the aforementioned flange and the aforementioned interface, and the aforementioned bridge base is exposed to the outside.

As shown in FIG. 5, the actual use diagram of the animal implantable prosthesis of the present invention, the white part is the artificial foot installed on the aforementioned bridge base part.

Claims (5)

An animal-implantable prosthesis is an implant prosthesis implanted in a bone marrow cavity below an animal's calcaneus, and is characterized by including a fixing screw with a thread, and the thread can be locked into the bone of the bone marrow cavity. To increase the bite force between the implant and the bone marrow cavity; the base of the screw is a convex rod that is located at the base of the aforementioned fixed screw and the bottom of the convex rod is a thickened structure; the flange has an umbrella-shaped outer structure and has a majority Holes; bridge bases, asymmetrical shapes, and a hole through which screws can pass; and interfaces, flanges and bridge bases whose thickness is increased by the shape of a layered arc; and the aforementioned fixed screw It does not polish the surface, and provides rough bone growth space to increase the stability and closeness between the implant and the organism. For example, the animal-implanted prosthetic limb according to item 1 of the application, wherein the animal-implanted prosthetic limb is made of metal. For example, the animal-implantable prosthetic limb according to item 2 of the patent application scope, wherein the aforementioned metal material is titanium. For example, the animal-implantable prosthesis of item 1 of the patent application scope, wherein the base of the aforementioned screw rod is increased by two layers of thickened structure at the bottom of the convex rod to disperse the stress gap between the implant and the bone. . A method for manufacturing an animal-implantable prosthetic limb according to any one of claims 1 to 4, which comprises the following steps: Step A. 3D tomography scans the bone marrow cavity below the calcaneus of the animal to obtain 3D tomographic data of the target animal. ; Step B, 3D printing according to the 3D tomographic data in Step A to produce the fixed screw and the screw base so that the specifications of the fixed screw and the screw base can be implanted into the bone marrow cavity; and step C, 3D print production The flange, the bridge base, and the interface make the specifications of the flange completely cover the bone marrow cavity opening.