TW202033163A - Tibia osteotomy device capable of accurately cutting a correct curve, shortening the required operation time, and reducing the risk - Google Patents

Abstract

This invention relates to a tibia osteotomy device, comprising a base, of which a first end is disposed with a fixing part for being fixed on a fixture outside the patient's body and a second end contains a first guide rail; a sliding seat including a first guiding part slidably coordinating with the first guide rail to enable the sliding seat to slide along the first guide rail of the base, and disposed with a second guide rail to enable the first guide rail to be projectively orthogonal to the second guide rail; a connecting seat including a second guiding part slidably coordinating with the second guide rail of the sliding seat, and enabling the connecting seat to be disposed with a connecting part; and at least one osteotomy tool disposed with a joining part to enable the joining part to be joined to the connecting part of the connecting seat.

Description

Tibia osteotomy appliance

The invention relates to a tibial osteotomy appliance.

At present, there are two main methods of high tibial osteotomy (HTO) for the treatment of knee degenerative diseases. One of them is to perform an oblique angle osteotomy of the tibia to readjust the tibia to an appropriate level. The position allows the corrected gravity to act on the tibial plateau evenly to reduce the abrasion of the original damaged cartilage and the patient’s pain.

Another type of tibial osteotomy correction surgery is to form an arc-shaped incision on the front of the tibia. At this time, the incised tibia can be rotated and adjusted according to the arc-shaped incision to change the line of force on the tibia to make the corrected tibia The force line can act on the proper position of the tibial plateau to reduce the abrasion of the original damaged cartilage and reduce the patient's pain. However, at present, there is no good auxiliary tool for the above-mentioned arc osteotomy. Most of the osteotomy is performed based on the experience of the operator. Therefore, in addition to the inability to cut the correct arc, there is no guidance in the cutting process, so the osteotomy The time required is extremely long and the risk is also high.

Furthermore, after the osteotomy is completed, there is no accurate and convenient angle gauge as a basis for applying angular displacement to the truncated tibia, and there is a need for improvement.

In view of this, the inventor of the present case has developed and created to disclose the tibial osteotomy appliance disclosed in the present invention.

The object of the present invention is to provide a tibial osteotomy appliance, which includes: a base with a fixing portion provided at a first end for fixing to a fixture outside the patient's body, and a second end with a first A guide rail; a sliding seat containing a first guide part, which is slidably fitted with the first guide rail, so that the sliding seat can slide along the first guide rail of the base; in addition, the sliding seat is provided with a second guide rail, Make the first and second The guide rails are projected orthogonally; a connecting seat includes a second guide part that is slidingly fitted with the second guide rail of the sliding seat, and the connecting seat is provided with a connecting part; and at least one osteotomy tool is provided There is a connecting part, so that the connecting part is connected to the connecting part of the connecting seat.

In the tibial osteotomy appliance disclosed in the present invention, the first guide rail of the base is recessed inward from the side end of the base, and a positioning device is provided on the base for pressing and sliding on the base The sliding seat in the first guide rail; the above-mentioned positioning device is a positioning screw hole, so that the positioning screw hole communicates with the first guide rail, so that a screw is screwed into the positioning screw hole to be slidably placed on the first guide rail. A sliding seat in a guide rail.

In the tibial osteotomy appliance disclosed in the present invention, the second guide rail of the sliding seat penetrates the sliding seat, and a fixing device is provided on the sliding seat to tightly slide the connecting seat in the second guide rail The above-mentioned fixing device is a screw hole, so that the screw hole is connected to the second guide rail, so that a screw is screwed in the screw hole to press the connecting seat in the second guide rail.

In the tibial osteotomy appliance disclosed in the present invention, the connecting portion of the connecting seat is a sliding groove to allow the connecting portion to slide in.

In the tibial osteotomy appliance disclosed in the present invention, the osteotomy tool is a chiseling guide, which contains a body, and is provided with the engagement portion on the body, and a plurality of guide holes penetrate through the body, The guide holes are arranged in an arc curve. Wherein, each of the guide holes can be arranged in an upward arc line at both ends or in a downward arc line at both ends, and the present invention is not self-limiting.

In the tibial osteotomy appliance disclosed in the present invention, the osteotomy tool can be a square and includes a body, the body is connected with the joint part, and a pivot is provided on the body for pivotally connecting an indicator The rod is marked with an angle scale on the body according to the pivot as the center of the circle, and the indicator rod can be provided with a plurality of through holes, so that the operator can use the indicator rod as a basis for the angular displacement of the tibia.

In the tibial osteotomy appliance disclosed in the present invention, the osteotomy tool is a cutting guide tool and contains a body, the body is in the shape of an arc-shaped plate, and the connecting part is provided on the body to be connected to The connecting part of the connecting seat enables the tool to cut the tibia according to the guide of the arc-shaped body cut. The above-mentioned arc-shaped plate-shaped body may have both ends curved upwards or curved downwards, and the present invention is not limited.

In the tibial osteotomy appliance disclosed in the present invention, the osteotomy tool is another cutting guide tool, which contains a body, and is provided with the engagement portion on the body, and an arc-shaped slot penetrates through the body, In addition, the arc-shaped slots are arranged in an arc-shaped curve, so that a tool can be inserted through the arc-shaped slots to cut the tibia. The front edge of the tool is recessed with a recess to avoid human ligaments, and a plurality of blocking holes are provided on the tool for inserting the blocking pin, and the blocking pin abuts against the body to limit the cutting of the tool depth.

The desirable entities of the present invention can be clarified by the following description and accompanying drawings.

(10)‧‧‧Base

(11)‧‧‧Fixed part

(12)‧‧‧First rail

(13)‧‧‧Locating device

(14)‧‧‧Screw

(20)‧‧‧Slide

(21)‧‧‧The first guide

(22)‧‧‧Second rail

(23)‧‧‧Fixed device

(24)‧‧‧Screw

(30)‧‧‧Connecting seat

(31)‧‧‧Second Guide

(32)‧‧‧Connecting part

(40a)(40b)(40c)(40d)‧‧‧Bone Cutting Tool

(40a’)(40b’)(40c’)(40d’)‧‧‧Bone Cutting Tool

(401a)(401a’)‧‧‧Main body

(401b)(401b’)‧‧‧Main body

(401c)(401c’)‧‧‧Main body

(401d)(401d’)‧‧‧Main body

(41)‧‧‧Connecting Department

(42)‧‧‧Guide hole

(43)‧‧‧Arc-shaped slot

(44)‧‧‧Pivot

(45)‧‧‧Indicating rod

(46)‧‧‧Angle scale

(451)‧‧‧Through hole

(C)‧‧‧Cutting tools

(C’)‧‧‧Tool

(C1)‧‧‧Retaining edge

(C2)‧‧‧Concave

(C3)‧‧‧Block hole

(C4)‧‧‧Block pin

(F)‧‧‧Fixed objects

(S)(S’)‧‧‧Arc curve

(T)‧‧‧Tibia

Figure 1: is an exploded perspective view of the present invention.

Figure 2: is a perspective view of the present invention connecting a piercing guide.

Figure 3: is the front view of Figure 2.

Figure 4: is a three-dimensional schematic diagram of the present invention connecting a square.

Figure 5: is a three-dimensional schematic diagram of a cutting guide connected to the present invention.

Figure 6: is a three-dimensional schematic diagram of the present invention connecting another cutting guide

Figure 7: is a schematic diagram of tibia adjustment of the present invention.

Fig. 8 is a perspective exploded schematic view of another embodiment of the present invention.

Please refer to Figures 1-8, the present invention relates to a tibial osteotomy appliance, which includes: a base (10) with a fixing portion (11) at the first end for fixing outside the patient's body On the object (F), and its second end contains a first guide rail (12); a sliding seat (20) contains a first guide portion (21), It is slidingly matched with the first guide rail (12), so that the sliding seat (20) can slide along the first guide rail (12) of the base (10), in addition, the sliding seat (20) is provided with a second guide rail (22), so that the first and second guide rails (12, 22) are projected orthogonally; a connecting seat (30) contains a second guide portion (31), which is connected to the sliding seat (20) The second guide rail (22) is slidably fitted, and the connecting seat (30) is provided with a connecting portion (32); and at least one osteotomy tool (40a, 40b, 40c, 40d, 40a', 40b', 40c' or 40d) '), a connecting portion (41) is provided so that the connecting portion (41) is connected to the connecting portion (32) of the connecting seat (30).

As shown in Figure 2, the above-mentioned fixing object (F) used to fix the fixing portion (11) of the first end of the base (10) can refer to an external fixator for fractures or a fixing nail exposed outside the patient's body , Or a fixing frame located outside the patient's body, the present invention is not self-limiting.

As shown in Figures 1 and 8, the tibial osteotomy appliance disclosed by the present invention, wherein the first guide rail (12) of the base (10) is recessed inward from one side of the base (10), which can be T-shaped groove, dovetail groove, etc., the present invention does not limit the cross-sectional shape of the first guide rail (12); and a positioning device (13) is provided on the base (10) for pressing and sliding on The sliding seat (20) in the first guide rail (12); the above-mentioned positioning device (13) may be a positioning screw hole, so that the screw hole communicates with the first guide rail (12) to screw in the positioning screw hole A screw (14) is combined, and the sliding seat (20) placed in the first guide rail (12) is pressed tightly by the screw (14).

As shown in Figures 1 and 8, the tibia osteotomy appliance disclosed by the present invention, wherein the second guide rail (22) of the sliding seat (20) penetrates the sliding seat (20) and is on the sliding seat (20) A fixing device (23) is inserted through the connecting seat (30) which is slidably placed in the second guide rail (22): the fixing device (23) may be a screw hole so that the screw hole communicates with the The second guide rail (22) is used for screwing a screw (24) into the screw hole, and the connecting seat (30) in the second guide rail (22) is slid tightly by the screw (24).

As shown in Figures 1, 8, the tibial osteotomy appliance disclosed in the present invention, wherein the connecting portion (32) of the connecting seat (30) is a sliding groove to allow one of the osteotomy tools (40a, 40b, 40c) , 40d, 40a', 40b', 40c' or 40d') connecting part (41) is slidably placed inside.

As shown in Figures 1, 2, 3, and 8, the tibial osteotomy appliance disclosed in the present invention, wherein the osteotomy tool (40a or 40a') is a chiseling guide, which contains a body (401a, 401a') ), and the connecting portion (41) is provided on the body (401a, 401a'), and a plurality of guide holes (42) penetrate through the body (401a, 401a'), and each guide hole (42) Arranged in an arc-shaped curve (S or S'); in this case, the guide holes (42) can be used to guide cutting tools (C) such as drills and chisels to puncture the tibia, because the guide holes (42) Arranged in an arc-shaped curve (S or S'), so many holes in an arc-shaped arrangement can be created on the tibia to destroy the strength of the bone. The above-mentioned guide holes (42) can be arranged in an upward arc curve (S) at both ends, or arranged in a downward arc curve (S') at both ends; the arc curve (S or S') can be arranged It is a curve with an equal diameter at the center of a circle, but the present invention does not limit the form of the arc-shaped curve (S or S'). The above-mentioned cutting tool (C) is sleeved with a retaining edge (C1), so that the outer diameter of the retaining edge (C1) is larger than the aperture of the guide hole (42) to limit the cutting tool (C) from cutting the tibia (T) depth.

As shown in Figures 1, 4, 7, and 8, the tibial osteotomy appliance disclosed in the present invention, wherein the osteotomy tool (40b or 40b') is a square and contains a body (401b, 401b'), and the body (401b, 401b') is connected with the connecting portion (41), and a pivot (44) is provided on the main body (401b, 401b') for pivotally connecting an indicator rod (45) to the main body ( An angle scale (46) is marked on 401b, 401b') based on the pivot (44) as the center of the circle. The indicator rod (45) can be provided with a through hole (451) to allow a needle or a pen to penetrate to mark the patient's skin or tibia as a reference for the angular displacement of the tibia (T).

As shown in Figures 1, 5, and 8, the tibial osteotomy appliance disclosed in the present invention, wherein the osteotomy tool (40c, 40c') is a cutting guide, which contains a body (401c, 401c'), The body (401c, 401c') is in the shape of an arc-shaped plate, and the connecting portion (41) is provided on the body (401c, 401c') for connecting to the connecting portion (32) of the connecting seat (30) ), if so, the tool (C') can cut the tibia (T) by relying on the body (401c, 401c') in the shape of an arc plate.

As shown in Figures 1, 6, and 8, the tibial osteotomy appliance disclosed in the present invention, wherein the osteotomy tool (40d or 40d') is another cutting guide, which contains a body (401d, 401d'), And in this book The connecting portion (41) is provided on the body (401d, 401d'), and an arc-shaped slot (43) penetrates through the body (401d, 401d') for guiding a tool (C') to follow the arc After the slotted hole (43) is penetrated, the tibia (T) is cut, and an arc-shaped incision (P) as shown in Figure 7 is completed to cut off the tibia (T). The above-mentioned cutter (C') is recessed with a recess (C2) on the side edge of the front end to avoid human ligaments, and a plurality of blocking holes (C3) are provided on the cutter (C') for inserting the blocking pin ( C4), the stop pin (C4) abuts against the body (401d, 401d') to limit the cutting depth of the tool (C').

The structure and shape disclosed in the present invention can be modified and applied without departing from the spirit and scope of the present invention, and the present invention is not limited to the above-mentioned embodiments.

(10)‧‧‧Base

(11)‧‧‧Fixed part

(12)‧‧‧First rail

(13)‧‧‧Locating device

(14)‧‧‧Screw

(20)‧‧‧Slide

(21)‧‧‧The first guide

(22)‧‧‧Second rail

(23)‧‧‧Fixed device

(24)‧‧‧Screw

(30)‧‧‧Connecting seat

(31)‧‧‧Second Guide

(32)‧‧‧Connecting part

(40a)(40b)(40c)(40d)‧‧‧Bone Cutting Tool

(401a)‧‧‧Ontology

(401b)‧‧‧Ontology

(401c)‧‧‧Ontology

(401d)‧‧‧Ontology

(41)‧‧‧Connecting Department

(42)‧‧‧Guide hole

(43)‧‧‧Arc-shaped slot

(44)‧‧‧Pivot

(45)‧‧‧Indicating rod

(451)‧‧‧Through hole

(46)‧‧‧Angle scale

(S)(S’)‧‧‧Arc curve

Claims (10)

A tibial osteotomy appliance includes: a base, the first end of which is provided with a fixing part for fixing to a fixture outside the patient's body, and the second end of which contains a first guide rail; and a sliding seat which contains a The first guide part is slidably fitted with the first guide rail, so that the sliding seat can slide along the first guide rail of the base. In addition, the sliding seat is provided with a second guide rail to make the first and second guide rails project The ground is orthogonal; a connecting seat includes a second guide part that is slidably fitted with the second guide rail of the sliding seat, and the connecting seat is provided with a connecting part; and at least one osteotomy tool is provided with a joint Part, so that the connecting part is connected to the connecting part of the connecting seat. The tibial osteotomy appliance according to claim 1, wherein the first guide rail of the base is recessed inwardly from the side end of the base, and a positioning device is provided on the base for pressing and sliding placement The sliding seat in the first guide rail. The tibial osteotomy appliance according to claim 1, wherein the second guide rail of the sliding seat penetrates the sliding seat, and a fixing device is provided on the sliding seat to fix the connection slidably placed in the second guide rail seat. The tibial osteotomy appliance according to claim 1, wherein the connecting part of the connecting seat is a sliding groove to allow the connecting part to slide in. The tibial osteotomy appliance according to claim 1, wherein the osteotomy tool is a chiseling guide, including a body, and the connecting portion is provided on the body, and a plurality of guides penetrate through the body Holes, so that the guide holes are arranged in an arc-shaped curve. The tibial osteotomy appliance according to claim 5, wherein each of the guide holes is arranged in an upward arc line at both ends or in a downward arc line at both ends. The tibial osteotomy appliance according to claim 1, wherein the osteotomy tool is an angle gauge and includes a body, the body is connected with the joint part, and a pivot is provided on the body for pivotally connecting a The indicating rod is marked with an angle scale on the body according to the pivot axis as the center of the circle. The tibial osteotomy appliance according to claim 1, wherein the osteotomy tool is a cutting guide tool and includes a body, the body is in the shape of an arc-shaped plate, and the joint is provided on the body to Connected to the connecting part of the connecting seat. The tibial osteotomy appliance according to claim 8, wherein the arc-shaped plate-shaped body has both ends curved upward or both ends curved downward. The tibial osteotomy appliance according to claim 1, wherein the osteotomy tool is a cutting guide tool comprising a body, the body is provided with the engagement portion, and an arc-shaped slot penetrates through the body , And each of the arc-shaped slots is arranged in an arc-shaped curve, so that a tool is inserted through the arc-shaped slot to cut the tibia; the front edge of the tool is recessed with a recess, and the tool is provided Most stop holes are used for inserting stop pins, and the stop pins abut against the body to limit the cutting depth of the tool.

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