Osteotomy protection device

Abstract

The present invention provides an osteotomy protection device, comprising: an osteotomy part, having an osteotomy guide groove and a Kirschner wire guide groove, the plane where the osteotomy guide groove is located is arranged parallel to the plane where the Kirschner wire guide groove is located, the osteotomy guide groove is used to insert an oscillating saw, and the Kirschner wire guide groove is used to insert the Kirschner wire; a blocking part, arranged opposite to the osteotomy part; a first connecting part, connecting the osteotomy part and the blocking part, and forming an accommodating space. The osteotomy protection device of the present invention places the cut bone in the accommodating space, and the oscillating saw passes through the osteotomy guide groove and moves forward according to the osteotomy position defined by the Kirschner wire to perform osteotomy. When the oscillating saw extends out of the cut bone, the blocking part blocks the oscillating saw from continuing to move, thereby preventing damage to peripheral nerves, blood vessels and soft tissues, and preventing complications, thereby playing a protective role.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices for high tibial osteotomy correction, and in particular to an osteotomy protection device. Background Art

[0002] High tibial osteotomy is generally used for the surgical treatment of osteoarthritis. Knee osteoarthritis is often accompanied by genu varum or genu valgum deformity, which produces changes in the distribution of weight-bearing stress within the joint. When the knee is varus, stress is concentrated on the medial part of the knee joint and accelerates the progression of degenerative changes occurring on the medial side of the knee. On the contrary, if the knee deformity is valgus, these changes occur on the lateral part of the knee joint. The main purpose of osteotomy is to improve knee function by correcting the axis of the knee joint and increasing the stability of the joint.

[0003] The commonly used clinical method of high tibial osteotomy is to cut a section at the proximal end of the tibia, then expand it to form a triangular space, and then fix it with a bone plate. This high tibial osteotomy method requires that most of the tibia be cut off. Most of the existing medical devices for osteotomy focus on the accuracy of the osteotomy surface, but do not consider the possible damage to the peripheral nerves, blood vessels and soft tissues of the tibia caused by the bone knife. Once the soft tissue is cut by the bone knife, it is not conducive to the patient's recovery and adds to the patient's pain. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the technical defect that the medical devices used for high tibial osteotomy in the prior art do not take into account the possible damage caused by the bone knife to the surrounding nerves, blood vessels and soft tissues. Once the soft tissue is cut by the bone knife, it is not conducive to the patient's recovery and increases the patient's pain. The present invention thus provides an osteotomy protection device that can protect the nerves, blood vessels and soft tissues around the tibia during osteotomy and prevent complications.

[0005] To this end, the present invention provides an osteotomy protection device, comprising: an osteotomy portion, having an osteotomy guide groove and a Kirschner wire guide groove, wherein the plane where the osteotomy guide groove is located is arranged parallel to the plane where the Kirschner wire guide groove is located, the osteotomy guide groove is used to insert an oscillating saw, and the Kirschner wire guide groove is used to insert a Kirschner wire;

[0006] A blocking portion, arranged opposite to the osteotomy portion;

[0007] The first connecting portion connects the osteotomy portion and the blocking portion to form an accommodating space.

[0008] As a preferred solution, there are two Kirschner wire guide grooves, which are arranged in parallel on both sides of the osteotomy guide groove.

[0009] As a preferred solution, along the insertion direction of the oscillating saw, the planes where the osteotomy guide groove and the Kirschner wire guide groove are located are arranged close to each other.

[0010] As a preferred solution, the osteotomy guide groove is arranged along the direction from the osteotomy portion to the blocking portion, and the Kirschner wire guide groove is arranged to be inclined at a certain angle to the osteotomy guide groove.

[0011] As a preferred solution, the first connecting portion includes:

[0012] A connecting bottom surface connecting the osteotomy portion and the blocking portion;

[0013] At least one side wall is arranged on the side edge of the connecting bottom surface to form a receiving groove.

[0014] As a preferred solution, it also includes:

[0015] The handle comprises a hand-holding portion and a second connecting portion, wherein the second connecting portion connects the hand-holding portion and the osteotomy portion.

[0016] As a preferred solution, the second connecting portion is bent to connect the handle and the osteotomy portion to make room for operating the oscillating saw.

[0017] The technical solution provided by the present invention has the following advantages: the osteotomy protection device of the present invention comprises an osteotomy part, a blocking part and a first connecting part, the osteotomy part has an osteotomy guide groove and a Kirschner wire guide groove, the plane where the osteotomy guide groove is located is arranged parallel to the plane where the Kirschner wire guide groove is located, the osteotomy guide groove is used to insert an oscillating saw and guide the moving direction of the oscillating saw, the Kirschner wire guide groove is used to insert the Kirschner wire to limit the osteotomy position, the blocking part is arranged opposite to the osteotomy part, and is used to block the oscillating saw, the first connecting part connects the osteotomy part and the blocking part, and forms a accommodating space for accommodating the bone to be amputated (such as the tibia), the oscillating saw passes through the osteotomy guide groove, moves forward according to the osteotomy position limited by the Kirschner wire, and performs osteotomy, when the oscillating saw extends out of the cut bone, the blocking part can stop the oscillating saw from continuing to move, prevent damage to peripheral nerves, blood vessels and soft tissues, and prevent complications, thereby playing a protective role. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the prior art or the specific implementation manner of the present invention, the drawings used in the description of the prior art or the specific implementation manner are briefly introduced below.

[0019] Figure 1 It is a schematic diagram of the overall structure of the osteotomy protection device of the present invention.

[0020] Figure 2 yes Figure 1 Another stereoscopic view of .

[0021] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure of part A.

[0022] Figure numerals: 1. handle; 11. hand-holding part; 12. second connecting part; 2. osteotomy part; 21. osteotomy guide groove; 22. Kirschner wire guide groove; 3. blocking part; 4. first connecting part; 41. connecting bottom surface; 42. side wall; 5. accommodating groove. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings.

[0024] Example

[0025] This embodiment provides an osteotomy protection device, such as Figure 1-3 As shown, it includes: an osteotomy part 2, having an osteotomy guide groove 21 and a Kirschner wire guide groove 22, the plane where the osteotomy guide groove 21 is located is arranged parallel to the plane where the Kirschner wire guide groove 22 is located, the osteotomy guide groove 21 is used to insert an oscillating saw, and the Kirschner wire guide groove 22 is used to insert a Kirschner wire; a blocking part 3, which is arranged opposite to the osteotomy part 2; a first connecting part 4, connecting the osteotomy part 2 and the blocking part 3, and forming an accommodating space.

[0026] In the osteotomy protection device implemented in this embodiment, the osteotomy guide groove 21 guides the moving direction of the oscillating saw, and the Kirschner wire guide groove 22 is used to limit the osteotomy position. The bone to be amputated (such as the tibia) is placed in the accommodating space, and the oscillating saw passes through the osteotomy guide groove 21 and moves forward according to the osteotomy position limited by the Kirschner wire to perform osteotomy. When the oscillating saw extends out of the cut bone, the blocking part 3 can stop the oscillating saw from continuing to move forward, preventing damage to the peripheral nerves, blood vessels and soft tissues, and preventing complications, thereby playing a protective role.

[0027] There are two Kirschner wire guide grooves 22, which are arranged in parallel on both sides of the osteotomy guide groove 21. The bilateral design of the osteotomy guide groove 21 in the osteotomy protection device of this embodiment allows different Kirschner wire guide grooves 22 to be selected to insert the Kirschner wire according to the needs of osteotomy, so as to achieve osteotomy from the proximal end or distal end of the Kirschner wire; in addition, since the bone to be cut may be located on the left side or the right side of the body, the two Kirschner wire guide grooves 22 are provided, which is also convenient for osteotomy operations on limbs located on different sides of the body, thereby increasing the convenience of use.

[0028] Along the insertion direction of the oscillating saw, the planes where the osteotomy guide groove 21 and the Kirschner wire guide groove 22 are located are arranged close to each other. This arrangement of the osteotomy guide groove 21 and the Kirschner wire guide groove 22 in the osteotomy protection device of this embodiment enables the oscillating saw inserted from the osteotomy guide groove 21 to closely follow the Kirschner wire inserted into the Kirschner wire guide groove 22 to perform osteotomy, thereby ensuring the accuracy of osteotomy.

[0029] The osteotomy guide groove 21 is arranged along the direction from the osteotomy part 2 to the blocking part 3, and the Kirschner wire guide groove 22 is arranged at a certain angle to the osteotomy guide groove 21. The osteotomy guide groove 21 and the Kirschner wire guide groove 22 in the osteotomy protection device of this embodiment are arranged at a certain angle, which can also ensure the close contact between the oscillating saw and the Kirschner wire during osteotomy, thereby ensuring the accuracy of osteotomy.

[0030] The first connecting portion 4 includes: a connecting bottom surface 41, connecting the osteotomy portion 2 and the blocking portion 3; and at least one side wall 42, which is arranged on the side of the connecting bottom surface 41 to form a receiving groove 5. During the osteotomy process, the oscillating saw often vibrates, and the receiving groove defines a protective space to ensure that the oscillating saw can only vibrate inside the receiving groove and will not extend outward, thereby protecting the peripheral nerves, blood vessels and soft tissues from damage to the greatest extent.

[0031] The device also includes a handle 1, including a hand-held portion 11 and a second connecting portion 12. The second connecting portion 12 connects the hand-held portion 11 and the osteotomy portion 2. The second connecting portion 12 is bent to connect the handle 1 and the osteotomy portion 2 to make room for the operation of the swing saw. The handle of the osteotomy protection device is held in the hand during osteotomy, which is easy to operate.

[0032] The steps of performing osteotomy using the osteotomy protection device of this embodiment are as follows:

[0033] Insert the Kirschner wire into the bone to be amputated (such as the tibia) in advance, hold the handle 1 of the osteotomy protection device, insert the Kirschner wire into the Kirschner wire guide groove 22, place the bone to be amputated in the accommodating space, insert the oscillating saw into the osteotomy guide groove 21, move forward close to the Kirschner wire, and perform osteotomy. When the oscillating saw cuts through the bone to be amputated and extends the amputated bone, the blocking part 3 can stop the oscillating saw from continuing to move forward, thereby completing the osteotomy.

[0034] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An osteotomy protection device, characterized in that: include: The osteotomy portion (2) comprises an osteotomy guide groove (21) and a Kirschner wire guide groove (22), wherein the plane where the osteotomy guide groove (21) is located is arranged parallel to the plane where the Kirschner wire guide groove (22) is located, the osteotomy guide groove (21) is used for inserting an oscillating saw, and the Kirschner wire guide groove (22) is used for inserting a Kirschner wire; A blocking portion (3) is arranged opposite to the osteotomy portion (2), and when the oscillating saw extends out of the osteotomy bone, the blocking portion (3) can block the oscillating saw from continuing to move forward; A first connecting portion (4) connecting the osteotomy portion (2) and the blocking portion (3) to form a receiving space for accommodating the bone of the limb to be amputated; The first connecting portion (4) comprises: A connecting bottom surface (41) connecting the osteotomy portion (2) and the blocking portion (3); At least one side wall (42) is provided on the side of the connecting bottom surface (41) to form a receiving groove (5), so that the pendulum can only vibrate in the receiving groove (5) and will not extend outward; Along the insertion direction of the oscillating saw, the planes where the osteotomy guide groove (21) and the Kirschner wire guide groove (22) are located are arranged close to each other; The osteotomy guide groove (21) is arranged along the direction from the osteotomy portion (2) to the blocking portion (3), and the Kirschner wire guide groove (22) is arranged at a certain angle inclined toward the osteotomy guide groove (21); A handle (1) comprises a hand-held portion (11) and a second connecting portion (12), wherein the second connecting portion (12) connects the hand-held portion (11) and the osteotomy portion (2).

2. The osteotomy protection device according to claim 1, characterized in that: There are two Kirschner wire guide grooves (22), which are arranged in parallel on both sides of the osteotomy guide groove (21).

3. The osteotomy protection device according to claim 1, characterized in that: The second connecting portion (12) is bent to connect the handle (1) and the osteotomy portion (2) to allow operating space for the oscillating saw.

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