TW202010479A - 3D printed animal implant prosthesis capable of enhancing the stability and tightness between the prosthesis and the organism - Google Patents

Abstract

This invention relates to an animal implant prosthesis which is an implant prosthesis implanted into the bone marrow cavity below the calcaneus of animal, characterized by comprising a fixing screw provided with threads. The fixing screw can be locked in the bone of bone marrow cavity through the threads to increase the bite force of the implant and the bone marrow cavity. The animal implant prosthesis further includes a screw base part being a protruding rod, wherein the protruding rod is located at the base part of the fixing screw and the bottom part thereof is a thickened structure; a flange with an umbrella shaped structure defining multiple holes; a bridging base with an asymmetric shape and underneath thereof having a hole for a screw to pass through; and an interface of the flange and the bridging base with increased thickness by hierarchical arc shape. Through this invention, customized animal implant prostheses can be obtained, thereby enhancing the stability and tightness between the prosthesis and the organism.

Description

3D printing animal implantable prosthesis

The invention relates to a 3D printed animal implantable prosthesis and a manufacturing method thereof, in particular, it can increase the stability and adhesion between the implant and the living body, and disperse the implant between the bone and the bone An animal implantable prosthesis that produces a stress gap and increases the protective power of the bone marrow cavity.

When an animal's limb is injured and needs to be cut off, it is traditionally worn with an auxiliary belt or an external assistance. However, these structures do not have sufficient support and cannot allow the animal to move freely.

In addition, the other prosthetic limbs currently used are only externally attached to 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, there is no custom prosthesis on the market, so there is still a need to meet the specifications of the target animal, and can increase the stability between the implant and the organism Animal implantable prosthesis with closeness, disperse the stress gap generated by the implant within and outside the bone, and increase the protection of the bone marrow cavity.

In view of the above problems, the present invention aims to provide a 3D printed animal implantable prosthesis and a manufacturing method thereof, which can increase the stability and adhesion between the implant and the living body, and disperse the implant between the bone and the extra-bone An animal implantable prosthesis that produces a stress gap and increases the protective power of the bone marrow cavity.

In order to achieve the aforementioned 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 of the animal below the calcaneus, characterized by comprising: a fixed screw, with a thread, and the thread can be locked into the bone marrow cavity In the bone, increase the bite force between the implant and the bone marrow cavity; the base of the screw is a convex rod, which is located at the base of the fixed screw, and the bottom of the convex rod is thickened; the flange, the umbrella-shaped outer structure, And it has many holes; the bridge base has an asymmetric shape, and there is a hole under which the screw can pass; and the interface, the interface between the flange and the bridge base, increases the thickness by the layered arc shape.

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

[3] The animal implantable prosthesis according to item 2 above, wherein the metal material is titanium metal.

[4] The animal implantable prosthesis as described in item 1, wherein the fixed screw is not polished on the surface, and the rough surface provides the space for bone cell growth to increase the stability and adhesion between the implant and the organism .

[5] The animal implantable prosthesis as described in item 1 above, wherein the base of the screw is provided with two layers of increasing thickening structure at the bottom of the convex rod to disperse the stress difference between the intra- and extra-bone of the implant.

[6] The animal implantable prosthesis as described in item 1 above, 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 protective power of the bone marrow cavity.

[7] A method for manufacturing an animal implantable prosthesis according to any one of items 1 to 6 above, characterized in that it includes: Step A, 3D tomography of the bone marrow cavity below the calcaneus of the animal to obtain 3D tomography data of the target animal; Step B, perform 3D printing on the 3D tomography data of 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; Step C, 3D printing to produce the convex The flange, the bridge base, and the interface allow the specifications of the flange to be implanted into the bone marrow cavity.

According to the invention of [1] to [6], it can provide increased stability and adhesion between the implant and the living body, disperse the stress gap between the intraosseous and extraosseous implants and increase the protection of the bone marrow cavity Powerful animal implantable prosthesis.

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

1‧‧‧ Animal implantable prosthesis

A‧‧‧Fixed screw

B‧‧‧Screw base

C‧‧‧Flange

D‧‧‧Interface

E‧‧‧Bridge

[Figure 1] A diagram showing an animal implantable prosthesis of the present invention.

[Figure 2] A structural diagram showing an animal implantable prosthesis of the present invention.

Fig. 3 shows the X-ray images of the animal implantable prosthesis of the present invention before and after implantation.

[FIG. 4] A completed view showing the implantation of the animal implantable prosthesis of the present invention.

[Fig. 5] A photograph showing an artificial foot installed on the bridge base after the animal implantable prosthesis 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, and an interface (refer to FIG. 1).

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

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

The aforementioned fixed screw is provided with a screw thread, and the height and separation distance of the screw thread can be a conventional public regulation, and the width and length are customized designs by analyzing the depth and width of the bone marrow cavity by 3D tomography.

Among them, 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 screw thread, the animal implantable prosthesis of the present invention can be locked into the bone to increase the bite force of the implant and the bone marrow cavity.

In addition, after 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, which is located at the base of the fixed screw, and the bottom of the convex rod is thickened. By thickening the structure, the stress gap between the intra- and extra-bone of the implant can be dispersed.

The aforementioned screw base is not particularly limited as long as it has a thickened structure, but it is better to add two layers of thickened structure at the bottom of the convex rod in increments. A multi-layer thickened structure can be added as required.

The aforementioned flange has an umbrella-shaped outer structure and is provided with a large number of holes; by setting the holes, the suture can be passed through the holes to fix the muscles here, so that the muscles can cover the bones, and can also increase the adhesion of soft tissues force.

In addition, with the umbrella-shaped outer structure of the flange, the umbrella-shaped protrusion can not only limit the depth of screw implantation, but also increase the protective power of the bone marrow cavity and prevent the bone marrow from being infected.

The aforementioned bridge base, as shown in FIG. 2, has an asymmetrical shape, and a hole through which a screw can pass is provided below it.

By designing the aforementioned abutment into an asymmetrical shape, the problem of instability caused by rotation of the artificial foot when the design is circular can be avoided; and the design of a regular polygon may avoid wrong orientation in the installation of the prosthesis situation.

The aforementioned interface is the interface between the aforementioned flange and the aforementioned bridge base, and it is a buffer design to prevent the fracture of the implantable prosthesis of the animal.

With the configuration of the aforementioned interface, the hierarchical arc shape can increase the thickness to avoid breakage, and can also be used to restrict the artificial foot installed on the bridge base from directly pressing on the skin of the like 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 is to implant the animal implantable prosthesis of the present invention in the calcaneus of a cat.

First, after removing the problematic metacarpal bone, the bone marrow cavity below the calcaneus is exposed. After 3D tomography scan of the site, the fixed screw, the screw base, the flange, the interface, and the abutment are obtained by 3D printing. 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 opening of the bone marrow cavity, and the skin edge is located between the flange and the interface .

The difference and position of the animal implantable prosthesis of 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 flange and the interface, and the bridge base is exposed.

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 in the aforementioned bridge base part.

1‧‧‧ Animal implantable prosthesis

A‧‧‧Fixed screw

B‧‧‧Screw base

C‧‧‧Flange

D‧‧‧Interface

E‧‧‧Bridge

Claims (7)

An animal implantable prosthesis, which is an implant prosthesis implanted in the bone marrow cavity below the calcaneus of the animal, characterized in that it includes: a fixed screw with a thread, and the thread can be locked into the bone marrow cavity bone , Increase the bite force between the implant and the bone marrow cavity; the base of the screw is a convex rod, which is located at the base of the fixed screw, and the bottom of the convex rod is thickened; the flange, umbrella-shaped structure, and has a majority Holes; bridge base, asymmetrical shape, and there is a hole under which screws can pass; and the interface, the interface between the flange and the bridge base, the thickness is increased by the hierarchical arc shape. For example, the animal implantable prosthesis of item 1 of the patent scope, which is made of metal. For example, the animal implantable prosthesis of item 2 of the patent scope, wherein the aforementioned metal material is titanium metal. For example, the animal implantable prosthesis of the first patent application, wherein the fixed screw is not polished on the surface, and the rough surface provides the space for bone cell growth, increasing the stability and density between the implant and the organism Fit. For example, the animal implantable prosthesis of the first patent application, in which the base of the screw is added with 2 layers of thickening structure at the bottom of the convex rod to disperse the stress gap between the bone inside and outside the bone . For example, the animal implantable prosthesis of item 1 of the patent scope, wherein the protruding portion of the umbrella structure of the flange can be used to limit the depth of screw implantation and increase the protective power of the bone marrow cavity. A method of manufacturing an animal implantable prosthesis according to any one of the items 1 to 6 of the patent scope, which is characterized by the following steps: Step A, 3D tomography scan of the bone marrow cavity below the calcaneus of the animal to obtain 3D tomography data of the target animal ; Step B, 3D printing according to the 3D tomography data of 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 printing The flange, the bridge base, and the interface enable the specifications of the flange to be implanted into the bone marrow cavity.

Images