Animal knee joint implant reflecting the animal's anatomical structure

Abstract

The present invention relates to an animal knee joint implant that reflects the animal's anatomical structure. More specifically, it relates to an implant that can be used for complex diseases that are more complex than general knee joint diseases (rheumatoid arthritis, degenerative arthritis) and often accompanied by symptoms such as bone loss, damage to surrounding muscles and ligaments, etc., and enhances the stability of varus and valgus as well as the stability of flexion and extension, thereby being able to easily compensate for the gap that may occur when cutting the joint bone, and is an animal knee joint implant that reflects the animal's anatomical structure.

Description

Technical Field

[0001] The present invention relates to a knee joint implant for animals that reflects the animal's anatomical structure. More specifically, the present invention relates to a knee joint implant for animals that can be used for complex diseases that are more complex than general knee joint diseases (rheumatoid arthritis, degenerative arthritis) and often accompanied by symptoms such as bone loss, damage to surrounding muscles and ligaments, and enhances the stability of varus and valgus and the stability of flexion and extension, so that it can easily compensate for the gap that may occur when cutting the joint bone, and reflects the animal's anatomical structure. Background Art

[0002] The knee joint is a joint composed of three bones surrounding the knee, namely the femur, tibia, and patella. It supports the load and is a core joint related to leg movement (for example, walking or running through joint movement).

[0003] Articular cartilage exists at the end of the femur, and meniscus cartilage exists at the end of the tibia. If this cartilage is damaged due to aging or intense exercise, the bones will come into contact with each other, likely causing severe pain.

[0004] Total knee arthroplasty is a surgical procedure in which, when such knee joint damage occurs, a part of the femur and tibia is resected and an artificial knee joint implant is inserted and replaced.

[0005] Figure 1 Shown is a conventional artificial knee joint implant, which is disclosed in the US Patent Publication US5,609,643A (March 11, 1997).

[0006] Refer to Figure 1 , a conventional artificial knee joint implant (90) is composed of: a tibial component (91) inserted into the proximal end of the resected tibia; a support component (93) disposed on the above-mentioned tibial component (91) to form an articulating surface; and a femoral component (95) inserted into the distal end of the resected femur and performing articular movement with the above-mentioned support component (93).

[0007] Generally, the above-mentioned tibial component (91) and the above-mentioned femoral component (95) are made of biocompatible metal cobalt-chromium (CoCr) material, while the above-mentioned bearing component (93) is made of polyethylene material, so that the non-metallic bearing component (93) is interposed between the above-mentioned tibial component (91) and the above-mentioned femoral component (95) made of metal. Thereby, direct metal-to-metal contact can be prevented, and smooth joint movement can be achieved.

[0008] However, this existing artificial knee joint implant (90) is for human transplantation, and its limitation is that it cannot be applied to animals (such as dogs) with anatomical structures different from those of upright humans.

[0009] Recently, due to the gradual improvement of people's living standards and the gradual trend of family forms towards nuclear families, the number of people raising companion animals has been continuously increasing. However, there is still a problem that when these animals suffer from knee joint diseases, there are no dedicated implants available for treatment, so that appropriate treatment cannot be provided for the animals.

[0010] Therefore, the relevant industry requires the introduction of a new technology, that is, to develop an animal implant that reflects the animal's anatomical structure, which can also restore the knee joint movement of the animal during total knee arthroplasty for animals, so as to ensure the normal walking of the animal after surgery.

[0011] (Patent Document 1) US Patent Gazette US5,609,643A (March 11, 1997) Summary of the Invention

[0012] Technical Problem

[0013] The present invention aims to solve the above problems

[0014] The object of the present invention is to provide an animal knee joint implant that reflects the animal's anatomical structure, which can also restore the knee joint movement of the animal during total knee arthroplasty for animals, so as to ensure the normal walking of the animal after surgery.

[0015] Another object of the present invention is to provide an animal knee joint implant that reflects the animal's anatomical structure, which can be used for complex diseases that are more complex than general knee joint diseases (rheumatoid arthritis, degenerative arthritis) and are often accompanied by symptoms such as bone loss, damage to surrounding muscles and ligaments.

[0016] Another object of the present invention is to provide an animal knee joint implant that constructs an inclined placement surface on an inclined placement surface according to the animal's anatomical structure to anatomically achieve that the proximal end of the medial tibia is higher than the proximal end of the lateral tibia.

[0017] Another object of the present invention is to provide an animal knee joint implant that reflects the animal anatomical structure, wherein the placement surface of the tibial component is configured to be inclined outwardly to have a relatively higher medial height (compared to the lateral height of the tibia).

[0018] Another object of the present invention is to provide an animal knee joint implant, wherein the placement surface of the tibial component is configured to be inclined rearwardly to achieve an anatomical structure of the distal end of the animal femur that is slightly inclined rearwardly from the proximal end of the tibia for joint movement, different from that of humans.

[0019] Another object of the present invention is to provide an animal knee joint implant that reflects the animal anatomical structure, which constructs a column protruding from the inclined placement surface of the tibial component, so that the column penetrates the support element, whereby the support element placed on the placement surface of the tibial component can rotate around the column.

[0020] Another object of the present invention is to provide an animal knee joint implant that reflects the animal anatomical structure, which constructs a tibial rod protruding in the distal direction on the tibial contact surface, so that the tibial component can be stably fixed on the resected proximal end of the tibia.

[0021] Another object of the present invention is to provide an animal knee joint implant that reflects the animal anatomical structure, wherein the tibial rod is configured to be inclined in the rearward direction so that the tibial rod can be easily inserted into the medial side of the tibia according to the anatomical shape of the animal's tibia.

[0022] Another object of the present invention is to provide an animal knee joint implant that reflects the animal anatomical structure, which can provide various different support elements according to the gap (Gap) that may occur when the joint bone is incised, so as to easily compensate for the above gap.

[0023] Another object of the present invention is to provide an animal knee joint implant that reflects the animal anatomical structure, which constructs a column receiving hole on the support element to accommodate the protruding column of the tibial component, so that the column is inserted into the column receiving hole, thereby preventing the support element placed on the inclined placement surface of the tibial component from detaching and enabling the support element to rotate around the column.

[0024] Another object of the present invention is to provide an animal knee joint implant that reflects the animal anatomical structure, wherein the central axis of the column receiving hole formed on the support element is configured to be perpendicular to the tibial component contact surface of the support element to provide an articular surface inclined at the inclination angle of the placement surface and to place the condyle of the femur on the inclined articular surface.

[0025] Another object of the present invention is to provide an animal knee joint implant that reflects the animal's anatomical structure, which constructs a femoral stem that protrudes obliquely inwardly on the femoral component so that the femoral stem can be easily inserted into the medial side of the femur according to the anatomical femoral shape of the animal and firmly fixes the femoral component to the resected distal femur.

[0026] Another object of the present invention is to provide an animal knee joint implant that reflects the animal's anatomical structure, which constructs a connecting element that rotatably connects the femoral component to the supporting component to prevent the condyle of the femoral component from disengaging from the joint surface of the supporting component on the joint surface of the supporting component, thereby ensuring smooth joint movement.

[0027] Another object of the present invention is to provide an animal knee joint implant that reflects the animal's anatomical structure, which constructs a yoke portion inserted into the space between the medial and lateral condyles of the femoral component to transversely accommodate a connecting pin and longitudinally accommodate a column, and fastens the connecting pin and the column in the yoke portion so that the condyles of the femoral component can rotate on the joint surface of the supporting component. In addition, the supporting component placed on the placement surface of the tibial component can also rotate around the column.

[0028] Another object of the present invention is to provide an animal knee joint implant that reflects the animal's anatomical structure, the yoke portion of which transversely accommodates a connecting pin and longitudinally accommodates a column so that the connecting pin and the column are fastened in the yoke portion, thereby enhancing the stability of varus and valgus and the stability of flexion and extension.

[0029] Another object of the present invention is to provide an animal knee joint implant that reflects the animal's anatomical structure, which constructs a connecting pin receiving hole on the yoke portion so that the femoral component can rotate smoothly around the connecting pin inserted into the connecting pin receiving hole.

[0030] Another object of the present invention is to provide an animal knee joint implant that reflects the animal's anatomical structure, which constructs a column receiving hole on the yoke portion so that the column receiving hole can accommodate the column of the tibial component. Thereby, the supporting component can rotate smoothly around the column penetrating the supporting component.

[0031] Another object of the present invention is to provide an animal knee joint implant that reflects the animal's anatomical structure, which connects the connecting pin receiving hole and the column receiving hole to each other so that the connecting pin received in the connecting pin receiving hole and the column received in the column receiving hole can be connected to each other, thereby achieving stable fastening of the column and the connecting pin.

[0032] Another object of the present invention is to provide an animal knee joint implant that reflects the animal's anatomical structure, which is provided with a gripping groove for gripping a column on a connecting pin, so that the connecting pin is received in the connecting pin receiving hole of the yoke portion. When the column is received through the column receiving hole of the yoke portion, the received portion of the column will be caught on the gripping groove of the connecting pin, thereby preventing the connecting pin from detaching.

[0033] Technical solution

[0034] To achieve the above object, the present invention is implemented by an embodiment having the following structure.

[0035] According to an embodiment of the present invention, the present invention is characterized in that it includes a tibial element connected to the proximal end portion of the animal tibia, and the tibial element includes a placement surface inclined according to the animal's anatomical structure.

[0036] According to another embodiment of the present invention, the present invention is characterized in that the placement surface is inclined in the outward direction so that the inner height of the tibial element is higher than the outer height of the tibial element.

[0037] According to another embodiment of the present invention, the present invention is characterized in that the placement surface is inclined backward.

[0038] According to another embodiment of the present invention, the present invention is characterized in that the tibial element includes a column protruding perpendicularly to the placement surface, and the column is inclined in the outward direction and the backward direction.

[0039] According to another embodiment of the present invention, the present invention is characterized in that the column penetrates through a support element so that the support element can rotate around the column on the placement surface of the tibial element.

[0040] According to another embodiment of the present invention, the present invention is characterized in that the tibial element includes a tibial rod protruding in the distal direction on the tibial contact surface.

[0041] According to another embodiment of the present invention, the present invention is characterized in that the tibial rod is inclined in the backward direction.

[0042] According to another embodiment of the present invention, the present invention is characterized in that it includes a support element disposed on the tibial element for supporting a femoral element, and the support element includes a column receiving hole for receiving the column of the tibial element and rotates around the column.

[0043] According to another embodiment of the present invention, the present invention is characterized in that the central axis of the hole of the column receiving hole is perpendicular to the contact surface of the tibial element.

[0044] According to another embodiment of the present invention, the present invention is characterized in that it includes: a femoral component connected to the distal end of the femur of an animal, and the femoral component includes: a femoral stem formed to protrude obliquely according to the anatomical structure of the animal.

[0045] According to another embodiment of the present invention, the present invention is characterized in that the femoral stem is inclined in the medial direction.

[0046] According to another embodiment of the present invention, the present invention is characterized in that it includes: a tibial component connected to the proximal end of the tibia of an animal; a support component disposed on the tibial component; a femoral component connected to the distal end of the femur of the animal; and a connecting component rotatably connecting the femoral component to the support component.

[0047] According to another embodiment of the present invention, the present invention is characterized in that the connecting component includes: a yoke portion inserted into the spaced space between the medial and lateral condyles of the femoral component; and a connecting pin penetrating and connecting the medial and lateral condyles of the femoral component and the yoke portion.

[0048] According to another embodiment of the present invention, the present invention is characterized in that the yoke portion includes: a connecting pin receiving hole for receiving the connecting pin; and a column receiving hole for receiving the column of the tibial component.

[0049] According to another embodiment of the present invention, the present invention is characterized in that the connecting pin receiving hole and the column receiving hole communicate with each other.

[0050] According to another embodiment of the present invention, the present invention is characterized in that the connecting pin includes: a gripping groove for gripping the column, and is prevented from disengaging by the column.

[0051] Effects of the Invention

[0052] Through the foregoing embodiments and the structures, combinations, and usage relationships to be described below, the present invention can achieve the following effects.

[0053] The effect of the present invention is to provide an animal knee joint implant that reflects the anatomical structure of an animal, which can also restore the knee joint movement of the animal during total knee arthroplasty for animals, thereby ensuring the normal walking of the animal after surgery.

[0054] The effect of the present invention is to provide an animal knee joint implant that reflects the anatomical structure of an animal, which can be used for complex diseases that are more complex than general knee joint diseases (rheumatoid arthritis, degenerative arthritis) and often accompanied by symptoms such as bone loss, damage to surrounding muscles and ligaments.

[0055] The effect of the present invention is to provide an animal knee joint implant, which constructs an inclined placement surface on an inclined placement surface according to the anatomical structure of the animal, so as to anatomically achieve that the proximal end of the medial tibia is higher than the proximal end of the lateral tibia.

[0056] The effect of the present invention is to provide an animal knee joint implant that reflects the anatomical structure of an animal, and the placement surface of its tibial component is configured to be inclined outward to have a relatively higher medial height (compared to the lateral height of the tibia).

[0057] The effect of the present invention is to provide an animal knee joint implant, and the placement surface of its tibial component is configured to be inclined backward to achieve an anatomical structure different from that of humans, where the proximal end of the tibia is slightly inclined backward, and the distal end of the femur of the animal performing joint movement.

[0058] The effect of the present invention is to provide an animal knee joint implant that reflects the anatomical structure of an animal, which constructs a column protruding from the inclined placement surface of the tibial component, so that the column penetrates the support element, whereby the support element placed on the placement surface of the tibial component can rotate around the column.

[0059] The effect of the present invention is to provide an animal knee joint implant that reflects the anatomical structure of an animal, which constructs a tibial rod protruding in the distal direction on the tibial contact surface, so that the tibial component can be stably fixed on the resected proximal end of the tibia.

[0060] The effect of the present invention is to provide an animal knee joint implant that reflects the anatomical structure of an animal, and the tibial rod is configured to be inclined in the posterior direction, so that the tibial rod can be easily inserted into the medial side of the tibia according to the anatomical tibial shape of the animal.

[0061] The effect of the present invention is to provide an animal knee joint implant that reflects the anatomical structure of an animal, which can provide various different support elements according to the possible gap (Gap) when cutting the joint bone, so as to easily compensate for the above gap.

[0062] The effect of the present invention is to provide an animal knee joint implant that reflects the anatomical structure of an animal, which constructs a column receiving hole on the support element to receive the protruding column of the tibial component, so that the column is inserted into the column receiving hole, thereby preventing the support element placed on the inclined placement surface of the tibial component from detaching, and enabling the support element to rotate around the column.

[0063] The effect of the present invention is to provide an animal knee joint implant that reflects the animal's anatomical structure. The central axis of the post receiving hole formed on the support element is configured to be perpendicular to the tibial element contact surface of the support element, so as to provide a joint surface inclined at the inclination angle of the placement surface, and enable the condyles of the femur to be placed on the inclined joint surface.

[0064] The effect of the present invention is to provide an animal knee joint implant that reflects the animal's anatomical structure. It constructs a femoral stem that protrudes obliquely inward on the femoral element, so that the femoral stem can be easily inserted into the medial side of the femur according to the anatomical femur shape of the animal, and firmly fix the above femoral element on the resected distal femur.

[0065] The effect of the present invention is to provide an animal knee joint implant that reflects the animal's anatomical structure. It constructs a connecting element that rotatably connects the above femoral element to the above support element to prevent the condyles of the femoral element from disengaging from the joint surface on the joint surface of the support element, thereby ensuring the smooth progress of joint movement.

[0066] The effect of the present invention is to provide an animal knee joint implant that reflects the animal's anatomical structure. It constructs a yoke portion inserted into the space between the medial and lateral condyles of the femoral element, so as to accommodate the connecting pin laterally and the post longitudinally, and fasten the above connecting pin and the above post in the above yoke portion, so that the condyles of the femoral element can rotate on the joint surface of the support element. In addition, it can also make the support element placed on the placement surface of the tibial element rotate around the post.

[0067] The effect of the present invention is to provide an animal knee joint implant that reflects the animal's anatomical structure. Its yoke portion accommodates the connecting pin laterally and the post longitudinally, so that the above connecting pin and the above post are fastened in the above yoke portion, thereby enhancing the stability of varus and valgus and the stability of flexion and extension.

[0068] The effect of the present invention is to provide an animal knee joint implant that reflects the animal's anatomical structure. It constructs a connecting pin receiving hole on the yoke portion, so that the femoral element can rotate smoothly around the connecting pin inserted into the above connecting pin receiving hole.

[0069] The effect of the present invention is to provide an animal knee joint implant that reflects the animal's anatomical structure. It constructs a post receiving hole on the yoke portion, so that the above post receiving hole can accommodate the post of the tibial element. Thereby, the above support element can rotate smoothly around the post penetrating the support element.

[0070] The effect of the present invention is to provide an animal knee joint implant that reflects the anatomical structure of an animal, which enables the connecting pin receiving hole and the column receiving hole to communicate with each other, so that the connecting pin received in the connecting pin receiving hole and the column received in the column receiving hole can be connected to each other, thereby achieving stable fastening of the column and the connecting pin.

[0071] The effect of the present invention is to provide an animal knee joint implant that reflects the anatomical structure of an animal, which constructs a gripping groove for gripping a column on the connecting pin, so that the connecting pin is received in the connecting pin receiving hole of the yoke portion. After the column is received through the column receiving hole of the yoke portion, the received part of the column will be stuck on the gripping groove of the connecting pin, thereby preventing the connecting pin from detaching. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] Figure 1 Shown is a conventional artificial knee joint implant.

[0073] Figure 2 Shown is a perspective view of an animal knee joint implant according to an embodiment of the present invention.

[0074] Figure 3 is Figure 2 exploded perspective view of.

[0075] Figure 4 Shown is a tibial component according to an embodiment of the present invention.

[0076] Figure 5 is Figure 4 rear view of.

[0077] Figure 6 is Figure 4 side view of.

[0078] Figure 7 Shown is a support element according to an embodiment of the present invention.

[0079] Figure 8 is Figure 7 side view of.

[0080] Figure 9 is Figure 7 plan view of.

[0081] Figure 10 Shown is a support element placed on the tibial component.

[0082] Figure 11 Shown is a femoral component according to an embodiment of the present invention.

[0083] Figure 12 is Figure 11 front view of.

[0084] Figure 13 is Figure 11 the rear view of.

[0085] Figure 14 is Figure 11 the side view of.

[0086] Figure 15 Shown is a connecting element according to an embodiment of the present invention.

[0087] Figure 16 Shown is a yoke portion according to an embodiment of the present invention.

[0088] Figure 17 is Figure 16 the side view of.

[0089] Figure 18 is Figure 16 the bottom view of.

[0090] Figure 19 Shown is a connecting pin according to an embodiment of the present invention.

[0091] Figure 20 Shown are the upright post and the connecting pin inserted into the yoke portion.

[0092] Figure 21 Shown is Figure 20 the connection state of the upright post and the connecting pin of.

[0093] Figure 22 Shown is Figure 20 the connection state of the upright post and the connecting pin of.

[0094] Figure 23 Shown is a usage state diagram of an animal knee joint implant according to an embodiment of the present invention. Detailed Description of the Invention

[0095] Hereinafter, a preferred embodiment of an animal knee joint implant reflecting an animal anatomical structure according to the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, if a detailed description of a well-known function or configuration may unnecessarily obscure the gist of the present invention, its detailed description will be omitted. Unless otherwise defined, all terms in this specification have the same general meaning as understood by those of ordinary skill in the technical field to which the present invention belongs. If there is a conflict with the meaning of the terms used in this specification, the definition used in this specification shall prevail. It should be clarified that, for ease of understanding, the drawings shown in this specification are based on the implant inserted into the left leg of an animal, and relevant descriptions will be made thereon.

[0096] Figure 2Shown is a perspective view of a knee joint implant for animals according to an embodiment of the present invention, Figure 3 which Figure 2 is a disassembled perspective view. Referring to Figure 2 and Figure 3 , the knee joint (1) for animals of the present invention refers to an artificial prosthesis that reflects the anatomical structure of animals and is inserted into the knee joint of an animal to replace the anatomical knee joint of the animal damaged for various reasons. The above-mentioned animals can be regarded as a broad concept, which refers to all animals other than humans (such as dogs, cats). The above-mentioned knee joint implant for animals (1) is usually used for more complex diseases that are more complex than general knee joint diseases (rheumatoid arthritis, degenerative arthritis) and often accompanied by symptoms such as bone loss, damage to surrounding muscles and ligaments, and is constructed to enhance the stability of varus and valgus and the stability of flexion and extension, so that the gap that may occur when cutting the joint bone can be easily compensated. The above-mentioned knee joint implant for animals (1) includes: a tibial component (10), a support component (30), a femoral component (50), and a connecting component (70).

[0097] The above-mentioned tibial component (10) is a structure inserted into the tibia of an animal, which provides a space for placing the support component (30) described later and also supports the support component (30) that is to come into contact with the femoral component (50). During total knee arthroplasty, the above-mentioned tibial component (10) will be placed by the surgeon at the proximal end of the horizontal cut and flat tibia of the animal, and a part of the above-mentioned tibial component (10) enters the inner side of the cancellous bone of the animal so that the above-mentioned tibial component (10) can be stably fixed on the above-mentioned tibia. Regarding the material constituting the above-mentioned tibial component (10), it is not limited by any specific concept, but preferably, it can be made of cobalt-chromium material. Figure 4 Shown is a tibial component according to an embodiment of the present invention, Figure 5 which Figure 4 is a rear view, Figure 6 which Figure 4 is a side view. Referring to Figures 4 to 6 for description, the above-mentioned tibial component (s10) includes: a placement surface (11), a column (13), a tibial contact surface (15), a tibial rod (17), and a tibial nail (19).

[0098] The above-mentioned placement surface (11) is a structure that provides a space for placing the following support element (30). Preferably, it can be an inclined structure that reflects the anatomical structure of the animal. Biologically speaking, the medial side of the animal's tibia is higher than the lateral side. Therefore, preferably, the above-mentioned placement surface should be configured to incline towards the lateral direction to reflect the anatomical structure of this animal. As Figures 4 to 5 shown, after the above-mentioned placement surface (11) is configured to incline towards the lateral side, an artificial tibia with a relatively higher medial height (H2) (compared to the lateral height (H1) of the tibia) can be constructed. Additionally, different from humans who walk bipedally, animals usually walk quadrupedally, and the distal end of the femur is not approximately perpendicular to the proximal end of the tibia. Instead, the distal end of the femur is slightly inclined backward at the position of the proximal end of the tibia for joint movement. Therefore, preferably, the above-mentioned placement surface (11) as Figure 6 shown can be configured to incline towards the lateral direction and also towards the posterior direction. When the above-mentioned placement surface (11) supports the tibia element contact surface (33) of the following support element (30), preferably, it should be configured as a smooth surface so that the support element (30) placed on the above-mentioned placement surface (11) can rotate within a specified range.

[0099] The above-mentioned upright column (13) refers to a structure that protrudes perpendicularly to the above-mentioned placement surface (11). Regarding the specific shape of the above-mentioned upright column (13), it is not limited by any specific concept. However, preferably, it can have a cylindrical shape. As described above, the above-mentioned placement surface (11) is configured to incline towards the lateral direction and the posterior direction to reflect the anatomical structure of the animal. Therefore, if the above-mentioned upright column (13) protrudes perpendicularly to such a placement surface (11), then the above-mentioned upright column (13) should also be configured to incline towards the lateral direction and the posterior direction.

[0100] The above-mentioned upright column (13) can be inserted into the upright column receiving hole (35) of the following support element (30). By means of the above-mentioned upright column (13), the support element (30) can be prevented from detaching from the above-mentioned tibia element (10), and the following support element (30) can be made to rotate around the above-mentioned upright column (13) on the above-mentioned placement surface (11) of the above-mentioned tibia element (10).

[0101] In addition, the above-mentioned column (13) can be inserted into the column receiving hole (713) of the following yoke portion (71). The following yoke portion (71) forms a connecting pin receiving hole (711) in the transverse direction. The connecting pin (73) is placed in the connecting pin receiving hole (711). A gripping groove (731) is formed on the placed connecting pin (73). Therefore, after the connecting pin (73) is inserted into the connecting pin receiving hole (711), when the above-mentioned column (13) is inserted into the column receiving hole (713), a part of the above-mentioned column (13) can be gripped on the gripping groove (731) of the connecting pin (73) to prevent the connecting pin (73) from detaching.

[0102] The above-mentioned tibial contact surface (15) refers to the part of the above-mentioned tibial component (10) that directly contacts the tibia. In total knee arthroplasty, the process of horizontally excising the problematic proximal tibia is performed. Therefore, to stably fix the above-mentioned tibial component (10) on the horizontally excised proximal tibia, the above-mentioned tibial contact surface (15) is preferably configured to have a shape complementary to the surface of the horizontally excised proximal tibia. Figure 6 As shown, preferably, it should be configured to have a shape complementary to the surface of the horizontally excised proximal tibia.

[0103] The above-mentioned tibial rod (17) refers to a structure that protrudes distally on the above-mentioned tibial contact surface (15). When placing the above-mentioned tibial component (10) on the excised proximal tibia, in addition to placing the above-mentioned tibial component (10) in the pre-planned position, the above-mentioned tibial component (10) should also be stably fixed on the proximal tibia to prevent deviation from this position. Therefore, the function of the above-mentioned tibial rod (17) is that after it is inserted into the medial tibia, it can firmly fix the above-mentioned tibial component (10) on the tibia. Preferably, the tibial rod (17) can be configured to be inclined posteriorly according to the anatomical tibial shape of the animal so as to be inserted into the relatively weaker cancellous bone of the tibia. The specific shape of the above-mentioned tibial rod (17) is not limited by any specific concept, but, as Figure 6 shown, it can be generally cylindrical in shape.

[0104] The above-mentioned tibial nail (19) refers to a structure that protrudes distally at a position on the above-mentioned tibial contact surface (15) that does not interfere with the above-mentioned tibial rod (17) to ensure the fixing force of the above-mentioned tibial component (10). The above-mentioned tibial nail (19) is formed on the above-mentioned tibial contact surface (15) when the sufficient fixing force between the tibial component (10) and the tibia cannot be ensured only by the above-mentioned tibial rod (17) to enhance the structural stability of the above-mentioned tibial component (10) inserted into the proximal tibia. The shape of the above-mentioned tibial nail (19) is not limited by any specific concept, but, preferably, as Figure 6As shown, the distal end portion can be configured to be a tapered shape, and the portion with relatively weak structural stability can be composed of several parts. In addition, the above-mentioned tibial rod (17) is configured to be inclined backward to adapt to the anatomical structure of the animal. However, the above-mentioned tibial nail (19) is for supplementing the fixing force of the above-mentioned tibial rod (17), and its protrusion degree on the above-mentioned tibial contact surface (15) is shorter than that of the above-mentioned tibial rod (17). Therefore, the above-mentioned tibial nail (19) can protrude perpendicular to the above-mentioned tibial contact surface (15) without being inclined.

[0105] Figure 7 The figure shows a support element according to an embodiment of the present invention. Figure 8 is Figure 7 a side view of Figure 9 is Figure 7 a plan view of Figure 10 The figure shows a support element placed on a tibial element. Next, reference is made to Figures 7 to 10 .

[0106] The above-mentioned support element (30) refers to a structure placed on the above-mentioned tibial element (10) for supporting the subsequent femoral element (50). After the medial condyle (511) and the lateral condyle (513) of the subsequent femoral element (50) are placed on the above-mentioned support element (30), knee joint movement is carried out. Regarding the material constituting the above-mentioned support element (30), it is not limited by any specific concept. However, preferably, it can be made of polyethylene material. After the joint bone is cut, there will be a gap (Gap), and this gap can have various different forms. The above-mentioned support element (30) can provide different forms according to the above-mentioned gap, whereby it can easily fill the above-mentioned gap. The above-mentioned support element (30) includes: an articular surface (31), a tibial element contact surface (33), and a column receiving hole (35).

[0107] The above-mentioned articular surface (31) is the part that contacts the medial condyle (511) and the lateral condyle (513) of the femoral element (50), and it can be configured to be concave to accommodate the convex condyles of the femoral element (50). The above-mentioned articular surface (31) can be divided into an inner articular surface (311) that accommodates the medial condyle (511) of the femoral element (50); and an outer articular surface (313) that accommodates the lateral condyle (513) of the femoral element (50). Preferably, the above-mentioned inner articular surface (311) can be symmetrical with the above-mentioned outer articular surface (313).

[0108] The above-mentioned contact surface (33) of the tibial component refers to the part in the above-mentioned support component (30) that contacts the above-mentioned placement surface (11) of the above-mentioned tibial component (10). As described above, the above-mentioned placement surface (11) is configured as a smooth surface to more easily achieve the support of the above-mentioned support component (30) and its rotation around the above-mentioned column (13). Therefore, the above-mentioned contact surface (33) of the tibial component should also be configured as a smooth surface.

[0109] The above-mentioned column receiving hole (35) is a structure for receiving the above-mentioned column (13) of the above-mentioned tibial component (10), and refers to a hole that penetrates from the above-mentioned joint surface (31) to the above-mentioned contact surface (33) of the tibial component. The above-mentioned support component (30) can be prevented from detaching from the above-mentioned placement surface (11) of the above-mentioned tibial component (10) by inserting the above-mentioned column (13) into the above-mentioned column receiving hole (35), and as Figure 10 shown, the above-mentioned support component (30) can rotate around the above-mentioned column (13). Preferably, in order for the above-mentioned column receiving hole (35) to accommodate the above-mentioned column (13) protruding perpendicularly to the above-mentioned placement surface (11), the hole central axis (351) should be configured to be perpendicular to the above-mentioned contact surface (33) of the tibial component.

[0110] Figure 11 Shown is a femoral component according to an embodiment of the present invention. Figure 12 is Figure 11 a front view of Figure 13 is Figure 11 a rear view of Figure 14 is Figure 11 a side view of Figures 11 to 14 .

[0111] The above-mentioned femoral component (50) is a structure inserted into the femur of an animal. Preferably, it is connected to the distal end of the femur. The above-mentioned femoral component (50) performs joint movement after contacting the joint surface (31) of the above-mentioned support component (30). Regarding the material constituting the above-mentioned femoral component (50), it is not limited by any specific concept. However, preferably, it can be made of a cobalt-chromium material. The above-mentioned femoral component (50) includes: a condyle (51), a pulley portion (53), a femoral contact surface (55), a femoral stem (57), and a femoral nail (59).

[0112] The above-mentioned condyle (51) is a convex portion on the lower side of the above-mentioned femoral component (50), and refers to a structure that performs joint movement after coming into contact with the joint surface (31) of the above-mentioned concave support component (30). Such a condyle (51) forms a spaced space (S), which is divided into a medial condyle (511) and a lateral condyle (513). After the above-mentioned medial condyle (511) and the above-mentioned lateral condyle (513) are respectively placed on the above-mentioned medial joint surface (311) and the above-mentioned lateral joint surface (513), joint movement can be performed. Preferably, it can be configured such that the above-mentioned medial condyle (511) is symmetrical with the lateral condyle (513).

[0113] On such a condyle (51), a hole can be formed that penetrates from the inner surface to the outer surface of the condyle (51). The hole that penetrates from the inner surface to the outer surface of the above-mentioned medial condyle (511) is called the medial connection pin placement hole (5111), and the hole that penetrates from the inner surface to the outer surface of the above-mentioned lateral condyle (513) is called the lateral connection pin placement hole (5131). The above-mentioned medial connection pin placement hole (5111) and the above-mentioned lateral connection pin placement hole (5131) accommodate the connection pin (73) described later, so that the above-mentioned femoral component (50) can rotate around the connection pin (73).

[0114] The above-mentioned pulley portion (53) refers to a structure formed on the front side of the above-mentioned femoral component (50) and in contact with the patella of the animal subject to total knee arthroplasty.

[0115] The above-mentioned femoral contact surface (55) refers to a surface of the above-mentioned femoral component (50) that contacts the femur. Preferably, it can be formed on the back surface of the above-mentioned pulley portion (50).

[0116] The above-mentioned femoral stem (57) refers to a structure that protrudes distally on the above-mentioned femoral contact surface (55). Regarding the specific shape of the above-mentioned femoral stem (57), it is not limited by any specific concept. However, preferably, it can have a cylindrical shape. The above-mentioned femoral stem (57) is inserted into the medial side of the femur, so that the above-mentioned femoral component (50) has structural stability and is firmly fixed on the animal femur. Preferably, the above-mentioned femoral stem (57) can be a structure that is inclined medially reflecting the anatomical structure of the animal.

[0117] The above-mentioned connecting element (70) refers to a structure that can achieve the articular movement between the above-mentioned femoral element (50) and the above-mentioned supporting element (30). Specifically, the above-mentioned connecting element (70) is connected to the medial condyle (511) and the lateral condyle (513) of the above-mentioned femoral element (50), designates the rotation center of the above-mentioned condyle (51), and accommodates the upright post (13) of the above-mentioned tibial element (10) that penetrates and connects the above-mentioned supporting element (30), thereby connecting the above-mentioned tibial element (10) and the above-mentioned femoral element (50) at the same time, and preventing the above-mentioned supporting element (30) between the above-mentioned tibial element (10) and the femoral element (50) from detaching. Figure 15 Shown is a connecting element according to an embodiment of the present invention. Referring to Figure 15 the above-mentioned connecting element (70) includes: a yoke portion (71), a connecting pin (73), and a bushing portion (75).

[0118] Figure 16 Shown is a yoke portion according to an embodiment of the present invention. Figure 17 is Figure 16 a side view of Figure 18 is Figure 16 a bottom view of. Hereinafter, reference is made to Figures 16 to 18 .

[0119] The above-mentioned yoke portion (71) is a structure inserted into the space (S) between the medial condyle (511) and the lateral condyle (513) of the above-mentioned femoral element (50). Preferably, it can be configured to have a shape complementary to the inner space shape of the above-mentioned space (S). The above-mentioned yoke portion (71) is configured to accommodate the above-mentioned upright post (13) of the tibial element (10) and the connecting pin (73) described later. The above-mentioned upright post (13) can be accommodated through the lower side surface of the above-mentioned yoke portion (71), and the connecting pin (73) can be accommodated through the inner and outer side surfaces of the above-mentioned yoke portion (71). As described later, a gripping groove (731) is formed on the connecting pin (73) so that the above-mentioned upright post (13) is stuck in the gripping groove (731). For this purpose, preferably, the above-mentioned yoke portion (71) should accommodate the above-mentioned upright post (13) after accommodating the connecting pin (73) inside. Regarding the material constituting the above-mentioned yoke portion (71), there is no limitation on it. However, in order to ensure the strength of the connection part, it can be made of a biometal material. The above-mentioned yoke portion (71) includes: a connecting pin accommodation hole (711) and an upright post accommodation hole (713).

[0120] The above-mentioned connecting pin accommodation hole (711) is a structure for accommodating the connecting pin (73) described later. As Figure 17As shown, it has a shape that penetrates from the inner side surface to the outer side surface of the above-mentioned yoke portion (71). Additionally, preferably, the above-mentioned connecting pin receiving hole (711) should be configured to have a shape complementary to the outer peripheral shape of the connecting pin (73) to facilitate the placement of the connecting pin (73). The above-mentioned connecting pin receiving hole (711) can communicate with the post receiving hole (713) described later. Thus, the connecting pin (73) received in the connecting pin receiving hole (711) will be stuck on the post (13) received in the post receiving hole (713).

[0121] The above-mentioned post receiving hole (713) is a structure for receiving the post of the above-mentioned tibial component (10). As Figure 18 shown, it can have a shape that penetrates from the lower side surface to the upper side surface of the above-mentioned yoke portion (71). To easily insert the above-mentioned post (13) into the above-mentioned post receiving hole (713), the above-mentioned post receiving hole (713) can be configured to have a shape complementary to the outer peripheral shape of the above-mentioned post (13). However, as shown above, when the above-mentioned tibial component (10) and the above-mentioned yoke portion (71) are made of a metal material, metal-to-metal contact will occur. And a lower bushing (755) described later can be interposed between the above-mentioned post receiving hole (713) and the above-mentioned post (13). Therefore, more preferably, the inner space of the above-mentioned post receiving hole (713) should be configured to have a shape complementary to the outer peripheral shape when the above-mentioned bushing (755) is inserted into the above-mentioned post (13). At this time, the above-mentioned post receiving hole (713) as Figure 18 shown, can form a seating portion (7131) for placing one end of the lower bushing (755).

[0122] The above-mentioned connecting pin (73) is a structure that penetrates and connects the medial condyle (511), lateral condyle (513) of the above-mentioned femoral component (50) and the above-mentioned yoke portion (71). It functions as the rotation center axis of the above-mentioned femoral component (50) that performs articular movement on the articular surface (31) of the above-mentioned support component (30). Regarding the shape of the above-mentioned connecting pin (730), it is not limited by any specific concept. However, preferably, to induce smooth articular movement, its interface can be configured to be circular, that is, cylindrical. Figure 19 Shown is a connecting pin according to an embodiment of the present invention. Referring to Figure 19 , the above-mentioned connecting pin (73) includes: a gripping groove (731).

[0123] The above-mentioned gripping groove (731) is a structure for gripping the column (13) of the above-mentioned tibial element (10), and refers to a portion having a shape complementary to the outer peripheral surface of the above-mentioned column (13) and recessed on the connecting pin (73). The above-mentioned connecting pin (73) passes through the medial connecting pin placement hole (5111) of the above-mentioned medial condyle (511) and the lateral connecting pin placement hole (5131) of the above-mentioned lateral condyle (513). Therefore, if there is no method for separately fixing the above-mentioned connecting pin (73), it may be disengaged from the fixed position through the medial connecting placement hole (5111) and the above-mentioned lateral connecting pin placement hole (5131). Therefore, in order to prevent the occurrence of such a problem, the above-mentioned gripping groove (731) is constructed on the above-mentioned connecting pin (73), so that the above-mentioned column (13) is placed in the above-mentioned gripping groove (731), thereby preventing the above-mentioned connecting pin (73) from disengaging in the medial or lateral direction.

[0124] Figure 20 Shown are the uprights and connecting pins inserted into the yoke portion. Figure 21 Shown is Figure 20 The connection status of the column and the connecting pin, Figure 22 Shown is Figure 20 The connection status of the column and the connecting pin. Figures 20 to 22 As described above, a portion of the upright post (13) of the tibial element (10) enters the gripping groove (731) on the connecting pin (73), so that the position of the connecting pin (73) is fixed by the upright post (13). In this way, the yoke portion (71) accommodates the connecting pin (73) in the transverse direction and the upright post (13) in the longitudinal direction. The connecting pin (73) and the upright post (13) are fastened to the yoke portion (71), thereby further enhancing the stability in varus and valgus as well as the stability in flexion and extension.

[0125] The bushing (75) is a non-metallic material structure that is inserted between components made of metal materials to prevent direct contact between the metal materials. The tibial component (10), the femoral component (50), the yoke (71) and the connecting pin (73) can be made of biometal to exhibit a specified strength. Therefore, the medial bushing (751) can be inserted into the medial connecting pin receiving hole (5111) of the medial condyle (511), the lateral bushing can be inserted into the lateral connecting pin receiving hole (5131) of the lateral condyle (511), and the lower bushing (755) can be inserted into the column receiving hole (713) of the yoke (71).

[0126] Figure 23The figure shows a usage state diagram of a knee joint implant for animals according to an embodiment of the present invention. Refer to Figure 23 for description. The above-mentioned tibial component (10) is inserted into the proximal end of the tibia (T) of an animal. The above-mentioned support component (30) can be rotatably placed on the inclined placement surface (11) of the tibial component (10). The above-mentioned femoral component (50) is inserted into the distal end of the animal femur (F). After the condyle (51) of the above-mentioned femoral component (50) comes into contact with the joint surface (31) of the above-mentioned support component (30), joint movement occurs. Therefore, the original anatomical movement of an animal with a damaged knee joint can be restored.

[0127] The above detailed description is intended to illustrate the present invention. In addition, the above content shows and describes the preferred embodiments of the present invention, and the present invention can also be used in various other combinations, changes and environments. That is, it can be changed or modified within the scope of the inventive concept disclosed in this specification; and within the scope equivalent to the disclosed content and / or within the scope of the technology or knowledge in this field. The described embodiments are intended to achieve the best state of the technical idea of the present invention, and various changes can also be made according to needs in the specific application fields and uses of the present invention. Therefore, the above detailed description of the present invention is only for the disclosed implementation state and is not used to limit the present invention. In addition, it should also be understood that the appended claims also cover other implementation states.

Claims

1. An animal knee joint implant that reflects the anatomical structure of an animal, excluding humans, characterized in that, The animal knee joint implant includes: a tibial component; The tibial component is configured to connect to the proximal end of the tibia of the animal, and the tibial component includes: A placement surface that is inclined in the posterior direction and the lateral direction to make the medial height of the tibial component higher than the lateral height of the tibial component by reflecting the anatomy of the animal; and A post that projects perpendicularly to the placement surface, and the post is inclined in the lateral direction and the posterior direction in a cylindrical shape; A tibial contact surface, opposite to the placement surface, and the tibial contact surface is configured to contact the tibia; and A tibial stem that projects in the distal direction and is inclined in the posterior direction from the tibial contact surface; A femoral component having a medial condyle and a lateral condyle; and A support component that is placed on the placement surface of the tibial component and is configured to support the medial condyle and the lateral condyle of the femoral component; A connecting component that rotatably connects the femoral component to the support component, and the connecting component includes: A yoke portion that is inserted into the space between the medial and lateral condyles of the femoral component; and A connecting pin that penetrates and connects the medial and lateral condyles of the femoral component and the yoke portion, and the yoke portion includes: a connecting pin receiving hole for receiving the connecting pin; and a post receiving hole for receiving the post of the tibial component, The tibial contact surface is configured to have a shape complementary to the surface of the horizontally resected proximal end of the tibia, such that when the contact surface is horizontally arranged, the placement surface is inclined in the posterior direction and the lateral direction, and the post is inclined in the lateral direction and the posterior direction, and The placement surface is configured as a smooth surface such that the support component placed on the smooth surface can rotate around the post on the placement surface, Wherein, the support component includes a post receiving hole that is configured to receive the post of the tibial component and has a hole central axis that is perpendicular to the tibial component contact surface that contacts the placement surface, such that the post passes through the support component, enabling the support component to rotate around the post on the placement surface of the tibial component, and The femoral component includes a femoral stem that projects and is inclined in the medial direction.

2. The animal knee joint implant for reflecting the anatomical structure of an animal according to claim 1, characterized in that, The connecting pin receiving hole and the post receiving hole communicate with each other.

3. The animal knee joint implant for reflecting the anatomical structure of an animal according to claim 2, characterized in that, The connecting pin includes: a gripping groove for gripping the post and preventing detachment by means of the post.

Images