KR101066356B1 - Guide apparatus for knee arthroplasty - Google Patents

Abstract

The present invention relates to a guide mechanism for knee joint surgery, wherein the first and second torque wrench coupling parts disposed separately from each other are formed with coupling grooves 11a and 12a to which a torque wrench (not shown) is selectively coupled ( 11) 12, the body 10 is installed; First and second elevating rods 20 and 30 lifted from the body 10 by rotation of the coupling grooves 11a and 12a of the first and second torque wrench coupling portions 11 and 12; As fixed to the body 10, the outer and inner lower blades (40, 50) in close contact with the outer upper end (a1) and the inner upper end (a2) of the tibia (a); And outer and inner upper blades 60 and 70 that are connected to the first and second lifting bars 20 and 30 and are in close contact with the outer lower end b1 and the inner lower end b2 of the femur b. It is characterized by including.

Description

Guide mechanism for knee joint surgery {GUIDE APPARATUS FOR KNEE ARTHROPLASTY}

The present invention relates to a guide mechanism for knee joint surgery, and more particularly, to guide the knee joint surgery for measuring the force and the degree of damage between the end of the femur and the end of the tibia in order to accurately perform artificial joint surgery It is about.

Total hip arthroplasty is a joint made of special alloy and polymer material for patients who cannot be solved by other surgical methods when the knee joint is damaged to the extent that it is no longer possible for normal daily life due to various diseases or trauma. Insertion to ease the pain, knee joint exercise is enabled to enable everyday life.

At present, total knee arthroplasty is actively performed in patients who have difficulty in daily life due to worn-out knee joints.At the time of surgery, the injured part between the femur, which forms the upper knee, and the tibia, which forms the lower knee, is removed. Then, by inserting and fixing the artificial joint in the removed part to move the knee joint to enable walking and to live daily life without pain.

By the way, the degree of injury of the knee joint is different for each patient, as shown in Figure 1 tibia is composed of the lateral upper end (a1) and the medial upper end (a2), lateral lower end (b1) and medial lower end (b2) ), The outer top a1 and the outer bottom b1 and the inner top a2 and the bottom bottom b2 differ in complex form. Therefore, in order to accurately perform the osteoarticular joint surgery, the force applied by the peripheral ligament between the damaged lateral upper end (a1) and the lower lateral end (b1), and the peripheral ligament between the medial upper (a2) and the lower medial (b2) There is a need for a mechanism for guiding the exact force applied.

The present invention has been made to solve the above problems, the force between the outer upper end of the tibia and the outer lower end of the femur, and the force between the medial upper end of the tibia and the medial lower end of the femur so as to accurately perform artificial joint surgery An object of the present invention is to provide a guide instrument for knee joint surgery that can accurately measure.

It is another object of the present invention to provide a guide mechanism for knee joint surgery for accurately measuring the damage degree of the outer and lower medial end of a damaged femur so as to more accurately perform artificial joint surgery.

In order to achieve the above object, the guide mechanism for knee joint surgery according to the present invention, the coupling groove (11a) (12a) is formed to be spaced apart from each other are formed in which the torque wrench (not shown) is selectively coupled A body 10 in which the first and second torque wrench coupling parts 11 and 12 are installed; First and second elevating rods 20 and 30 that are lifted from the body 10 by rotation of the coupling grooves 11a and 12a of the first and second torque wrench coupling portions 11 and 12; As fixed to the body 10, the outer and inner lower wings 40, 50 in close contact with the upper end of the tibia (a); And outer and inner upper blades 60 and 70 which are connected to the first and second elevating rods 20 and 30 and are in close contact with the outer lower end b1 and the inner lower end b2 of the femur b. Characterized in that it comprises a.

In the present invention, the rack gear (20a) (30a) is formed on the surface of the first, second lifting bar (20, 30) along the first, second lifting bar; Pinion gears (not shown) connected to the coupling grooves 11a and 12a are coupled to the rack gears 20a and 30a in the first and second torque wrench coupling portions 11 and 12.

In the present invention, the first bracket 25 is coupled to the end of the first elevating rod 20, and further comprises a first hinge 26 rotatably coupled to the front side of the first bracket (25) The outer upper blade 60 is coupled to the first hinge 26; And a second bracket 35 coupled to an end of the second elevating rod 30, and a second hinge 36 rotatably coupled to the front side of the second bracket 35. The wing 70 is coupled to the second hinge 36.

In the present invention, it is further provided with a first gauge portion 27 which is installed on the first bracket 25 to display the rotation angle of the outer upper blade 60 relative to the outer lower blade 40, ; It is further provided with a second gauge portion 37 which is installed on the second bracket 35 to display the rotation angle of the inner upper blade 70 with respect to the inner lower blade 50.

In the present invention, the first gauge portion 27, the first gauge body 27a which is provided on the side of the first bracket 25 and the first gauge body formed on the first gauge body 27a A first gauge needle provided in the groove 27b, the first scale 27c formed on the side of the first gauge groove 27b, and the outer upper blade 60 to indicate the first scale 27c. (27d); The second gauge portion 37 may include a second gauge body 37a installed at the side of the second bracket 35 and a second gauge groove 37b formed at the second gauge body 37a. And a scale 37c formed at the side of the second gauge groove 37b and a second gauge needle 37d installed at the inner upper blade 70 to point to the second scale 37c.

According to the present application, the force between the lateral upper end of the tibia and the lateral lower end of the femur and the force between the medial upper end of the tibia and the medial lower end of the femur can be accurately measured so that the artificial joint surgery can be performed accurately. Furthermore, it is possible to accurately measure the degree of damage of the injured femur lateral and lower medial end so that the operation of the artificial joint can be performed more accurately.

1 is a view for explaining the lateral upper and medial upper end of the tibia, the lateral lower end and medial lower end of the femur;
Figure 2 is a perspective view of the guide mechanism for knee joint surgery according to the present invention,
3 is a rear view of the guide instrument for knee joint surgery of Figure 2,
Figure 4 is a plan view of the guide instrument for knee joint surgery of Figure 2,
Figure 5 is a side view of the guide instrument for knee joint surgery of Figure 2,
6 and 7 are views for explaining the operation of the guide mechanism for knee joint surgery.

Hereinafter, the guide mechanism for knee joint surgery according to the present invention will be described with reference to the accompanying drawings.

1 is a view for explaining the outer upper and inner upper end of the tibia, the outer lower end and medial lower end of the femur. FIG. 2 is a perspective view of a guide instrument for knee joint surgery according to the present invention, FIG. 3 is a rear view of the guide instrument for knee joint surgery in FIG. 2, and FIG. 4 is a guide mechanism for knee joint surgery in FIG. 5 is a side view of the guide instrument for knee joint surgery of FIG. 6 and 7 are views for explaining the operation of the guide mechanism for knee joint surgery.

The guide device for surgical surgery of the knee joint is applied by ligaments between the tibia (a) and the femur (b) in order to accurately and firmly perform the artificial joint on the tibia (a) and the femur (b). Force, more specifically, the force applied by the ligament between the lateral upper end (a1) and the medial upper end (a2) of the tibia (a) and the lateral lower end (b1) and the medial lower end (b2) of the femur (b) Further, it is to accurately measure the degree of damage to the lateral and lower medial end of the damaged femur.

To this end, the guide mechanism for knee joint surgery according to the present invention, the first and second torque wrench coupling is spaced apart as being formed with coupling grooves (11a) (12a) to which the torque wrench (not shown) is selectively coupled, respectively. A body 10 in which the parts 11 and 12 are installed; First and second elevating rods 20 and 30 that are lifted from the body 10 by rotation of the coupling grooves 11a and 12a of the first and second torque wrench coupling portions 11 and 12; As fixed to the body 10 and the outer and inner lower blades (40) and (50) in close contact with the upper end of the tibia (a), more specifically the outer upper (a1) and inner upper (a2) of the tibia (a) and ; As connected to the first and second elevating rods (20, 30), the outer and inner upper blades (60) and (70) in close contact with the outer lower end (b1) and the inner lower end (b2) of the femur (b); do. At this time, the inclined surfaces 40a, 50a, 60a and 70a are formed on the outer and inner lower blades 40 and 50 and the outer and inner upper blades 60 and 70 so as to become thinner toward the front.

The body 10 may be provided with a handle (not shown), in which case the guide mechanism of the present application can be easily manipulated.

The first and second elevating rods 20 and 30 are rotated after coupling the torque wrench (not shown) to the coupling grooves 11a and 12a formed in the first and second torque wrench coupling portions 11 and 12. When it is lifted from the body (10). To this end, rack gears 20a and 30a are formed on the surfaces of the first and second elevating rods 20 and 30, and the first and second torque wrench coupling portions 11 are formed on the surfaces of the first and second elevating rods 20 and 30. 12, a pinion gear (not shown) connected to the coupling grooves 11a and 12a is coupled to the rack gears 20a and 30a. When the torque wrench is rotated after the torque wrench is coupled to the coupling grooves 11a and 12a of the first and second torque wrench coupling parts 11 and 12 by such a structure, the rack gear 20a and 30a is rotated. To move the first and second lifting bar 20, 30 will be raised accordingly.

The first bracket 25 is coupled to an end of the first lifting bar 20, and the first hinge 26 is rotatably coupled to the front side of the first bracket 25. The outer upper blade 60 is coupled to the first hinge 26, so that the outer upper blade 60 is rotatable at an angle about the first hinge 26.

The second bracket 35 is coupled to an end of the second lifting bar 30, and the second hinge 36 is rotatably coupled to the front side of the second bracket 35. The inner upper blade 70 is coupled to the second hinge 36, so that the inner upper blade 70 is rotatable at an angle about the second hinge 36.

The first bracket 25 is provided with a first gauge portion 27 that displays the rotation angle of the outer upper blade 60 on the basis of the outer lower blade 40. The first gauge portion 27 includes a first gauge body 27a provided on the side of the first bracket 25, a first gauge groove 27b formed on the first gauge body 27a, and a first gauge portion 27b. The first gauge 27c formed on the side of the first gauge groove 27b and the first gauge 27c installed in the outer upper blade 60 to enter the first gauge groove 27b to indicate the first gauge 27c. And a needle 27d.

The second bracket 35 is provided with a second gauge portion 37 which displays the rotation angle of the inner upper blade 70 based on the inner lower blade 50. The second gauge portion 37 includes a second gauge body 37a provided on the side of the second bracket 35, a second gauge groove 37b formed on the second gauge body 37a, The second gauge 37c formed at the side of the second gauge groove 37b and the second gauge 37C installed in the inner upper blade 70 and entering the second gauge groove 37b to indicate the second gauge 37C. And a needle 37d.

According to this structure, when the torque wrench is coupled to the coupling groove 11a of the first torque wrench coupling portion 11 and rotated, the first lifting bar 20 is lifted as shown in FIG. 40 and the outer upper blade 60 is opened to each other. In addition, when the torque wrench is coupled to the coupling groove 12a of the second torque wrench coupling part 12 and rotated, the second lifting bar 30 is lifted as shown in FIG. 2, and the inner lower blade 50 and The inner upper wings 70 are opened to each other. And the lifting degree of the first lifting bar 20 and the second lifting bar 30 is changed according to the degree of rotation of the coupling groove (11a) (12a), in this case the outer and inner upper blades as shown in FIG. The spacing between the 60 and 70 and the outer and inner lower blades 40 and 50 is different.

Meanwhile, the outer and inner upper blades 60 and 70 closely contact the outer and inner lower ends b1 and b2 depending on whether the femur outer and inner lower ends b1 and b2 are damaged. 36 is rotated about the axis. In this case, the degree of rotation of the outer and inner upper blades 60 and 70 can be known by checking the first and second scales 27c and 37c at the positions indicated by the first and second gauge needles 27d and 37d.

Next, the operation of the guide mechanism for knee joint surgery as described above.

Between the outer and inner top (a1) (a2) of the tibia (a) shown in Figure 1 and the outer and medial lower end (b1) (b2) of the femur (b), the outer and narrowed as shown in Figure 7 The inner lower blades 40 and 50 and the outer and inner upper blades 60 and 70 are interposed.

When the torque wrench is coupled to the coupling groove 11a of the first torque wrench coupling part 11 and rotated, the first lowering rod 20 is lifted and the outer lower wing 40 and the outer upper wing 60 are mutually opened. You lose. In addition, when the torque wrench is coupled to the coupling groove 12a of the second torque wrench coupling part 12 and rotated, the second lowering rod 30 is lifted and the lower inner blade 50 and the inner upper blade 70 are mutually connected. It will happen. At this time, when the outer and inner upper blades 60 and 70 are completely in contact with the outer and inner lower ends b1 and b2, a large load is applied to the torque wrench, and thus the outer and inner lower ends b1 and b2 and the outer side. And the force applied between the inner top (a1) (a2) can be seen.

The outer and inner upper wings 60 and 70 closely contact the outer and inner lower ends b1 and b2 depending on whether the femur outer and inner lower ends b1 and b2 are damaged. When the axis 36 is rotated about the axis, the degree of rotation of the outer and inner upper blades 60 and 70 is determined by the first and second divisions 27c and 27c at the positions indicated by the first and second gauge needles 27d and 37d. This can be seen by checking 37c). That is, by checking the first and second scales 27c and 37c indicated by the first and second gauge needles 27d and 37d, the damaged surfaces of the outer and inner lower ends b1 and b2 of the femur b are identified. The degree of damage can be seen.

Thus, the guide mechanism for knee joint surgery according to the present invention can accurately measure the force applied between the outer upper end of the tibia and the outer lower end of the femur, and the force applied between the upper upper end of the tibia and the medial lower end of the femur. . Furthermore, the degree of injury can be measured by measuring the injured surfaces of the injured femur and the lower and medial bottom, thereby allowing more accurate surgery of the artificial joint.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom.

a ... tibia a1 ... lateral top
a2 ... upper medial b ... femur
b1 ... bottom of outer b2 ... bottom of inner
10 ... body 11, 12 ... first and second torque wrench coupling
20, 30 ... 1, 2 lifting bar 20a, 30a ... rack gear
25, 35 ... 1, 2 Bracket 26, 36 ... 1, 2 Hinge
27, 37 ... 1, 2 gauge body 27a, 37a ... 1, 2 gauge body
27b, 37b ... 1st, 2nd gauge groove 27c, 37c ... 1st, 2nd scale
27d, 37d ... 1st, 2nd gauge needle
40, 50 ... outer and inner lower wings
60, 70 ... outer and inner upper blades

Claims (5)

A body 10 having first and second torque wrench coupling parts 11 and 12 disposed to be spaced apart from each other, in which a coupling groove 11a and 12a to which a torque wrench (not shown) is selectively coupled;
First and second elevating rods 20 and 30 that are lifted from the body 10 by rotation of the coupling grooves 11a and 12a of the first and second torque wrench coupling portions 11 and 12;
As fixed to the body 10, the outer and inner lower wings 40, 50 in close contact with the upper end of the tibia (a); And
As the first and second lifting rods 20 and 30 are connected, the outer and inner upper blades 60 and 70 in close contact with the outer lower end b1 and the inner lower end b2 of the femur b; Guide mechanism for knee joint surgery comprising a. The method of claim 1,
Rack gears (20a) (30a) are formed on the surface of the first and second lifting bars (20, 30) along the first and second lifting bars;
A pinion gear (not shown) connected to the coupling grooves 11a and 12a is coupled to the rack gears 20a and 30a in the first and second torque wrench coupling portions 11 and 12; A guide instrument for knee joint surgery, characterized in that. The method of claim 1,
And a first bracket 25 coupled to an end of the first elevating rod 20 and a first hinge 26 rotatably coupled to a front side of the first bracket 25. Wing 60 is coupled to the first hinge 26;
And a second bracket 35 coupled to an end of the second elevating rod 30, and a second hinge 36 rotatably coupled to the front side of the second bracket 35. Wing 70 is coupled to the second hinge 36; guide device for knee joint surgery, characterized in that. The method of claim 3,
A first gauge part (27) installed on the first bracket (25) to display a rotation angle of the outer upper blade (60) with respect to the outer lower blade (40);
And a second gauge portion 37 installed on the second bracket 35 to display a rotation angle of the inner upper blade 70 with respect to the inner lower blade 50. Guide device for surgical operation of the knee joint. The method of claim 4, wherein
The first gauge portion 27 includes a first gauge body 27a installed at the side of the first bracket 25 and a first gauge groove 27b formed at the first gauge body 27a. And a first gauge 27c formed at the side of the first gauge groove 27b and a first gauge needle 27d installed at the outer upper blade 60 to point to the first gauge 27c. and;
The second gauge portion 37 may include a second gauge body 37a installed at the side of the second bracket 35 and a second gauge groove 37b formed at the second gauge body 37a. And a graduation 37c formed at the side of the second gauge groove 37b and a second gauge needle 37d installed at the inner upper blade 70 to point to the second graduation 37c. Guide mechanism for knee joint surgery, characterized in that.

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