WO2015009002A1

WO2015009002A1 - Knee joint brace enabling three-dimensional movement

Info

Publication number: WO2015009002A1
Application number: PCT/KR2014/006340
Authority: WO
Inventors: 민병현
Original assignee: Min Byoung Hyun
Priority date: 2013-07-15
Filing date: 2014-07-15
Publication date: 2015-01-22
Also published as: KR20150009077A; CN105530894B; KR101518563B1; CN105530894A

Abstract

The present invention provides a knee joint brace in which frames of the knee joint brace can be mounted in close contact with the attachment surface of the femur and the attachment surface of the tibia even when the attachment surface of the femur and the attachment surface of the tibia are not parallel to each other, and the frames of the knee joint brace can be attached in close contact with the femur and the tibia whereby the body weight can be equally supported even when the brace-attached surface of the femur and the brace-attached surface of the tibia are not located on the same plane due to the abnormal shapes of the femur and the tibia. In addition, the knee joint brace according to the present invention is fixed between the femur and the tibia, and accordingly, has the advantage of enabling a three-dimensional movement of the knee joint of a surgical patient, etc. by assisting the surgical patient, etc. to smoothly perform a rotational movement of the knee joint within a predetermined angular range, as well as a bending movement of the knee joint, while maintaining constant joint intervals.

Description

Knee joint aid for 3D movement

The present invention relates to a knee joint assist device, and more particularly, to a knee joint assist device capable of three-dimensional motion that is fixed between the femur and tibia to help smoothly perform flexion and rotational movement while maintaining a constant joint gap. It is about.

Joints are areas that are always loaded by weight or strength when walking or exercising. Therefore, if there is an intra-articular damage can continue to worsen, long-term bed rest or crutch walking is required to protect the surgical site when surgical invasion is applied for the treatment of the joint. In addition, when the bone and the bone directly contact due to damage or abrasion of the articular cartilage or the deformation of the knee joint, it causes swelling and pain in the knee joint, thereby degrading normal knee function, thereby limiting normal activity. In some cases, the joints may be treated to prevent these symptoms from getting worse, or to prevent them from being recovered by physical therapy.

Korean Patent Laid-Open Publication No. 1999-0037439, which discloses the prior art as described above, has a tibial portion having a tibial bearing surface, and is slidably contacted on the tibial bearing surface and on its side away from the tibial bearing surface. A bearing body having a bearing scallop, a thigh portion movably arranged on the bearing scallop of the bearing body, a guide piece rotatably fixed to the tibial part to displace the bearing body in a quadrilateral direction with respect to the tibial bearing surface And a connecting member for cooperating with both the guide piece and the thigh so as to rotate the thigh on the bearing body, wherein the connecting member extends in a rotation axis direction parallel to the longitudinal axis or longitudinal axis of the tibia portion, or With respect to the axis of rotation parallel to the longitudinal or negative axis of the negative Jean has a knee joint prosthesis having a mechanism rotated possibly the journal pin extending in an axial direction are provided. The knee joint prosthetic device of the Korean Patent Laid-Open Publication No. 1999-0037439 is easy to assemble during surgery and is suitable for a patient who has no cross ligament and lateral ligament or can no longer function, but the correct position to ensure the operation reliability. The selection procedure is relatively complicated and the durability is weakened by the structure in which the concentrated load of the connection is generated.

In order to solve this problem, Korean Patent No. 10-1110075 discloses an auxiliary device for distributing the knee joint load as shown in Figs. 14 and 15, wherein the auxiliary device for distributing the knee joint load is the femur An auxiliary device for distributing the knee joint load (F) and the tibia (T), comprising: a first structure having a plurality of through holes to be coupled to the femur (F) and having one of the through holes as the center of rotation; Frame 10; A second frame 20 having a plurality of through holes to couple to the tibia T and having one of the through holes as a rotation center;

Bearings

31 and 32 accommodated in the center of rotation of the first frame 10 and the second frame 20 via bolts 35; And fastening means 40 allowing the first frame 10 and the second frame 20 to be coupled to the femur F and the tibia via the screw 42.

However, the assisting device for the load distribution of the knee joint disclosed in the Korean Patent Registration No. 10-1110075, if the attachment surface of the distal femur and the attachment surface of the proximal tibia to which the auxiliary device is to be fixed are not parallel to each other, Knee joints because the attachment surface and the lower surface of the femoral side frame of the assisting device are not in close contact, or the attachment surface of the tibia and the lower surface of the tibial frame of the assisting device are not in close contact with each other. You may be restricted by your exercise. Also, if the shape of the femur and tibia is not normal and the attachment surface of the distal femoral attachment device and the proximal tibia attachment are not located on the same plane, either the femoral side frame or the tibia side frame is distal. Since it is fixed in a state of not being in close contact with the femur or the proximal tibia, there is a fear that a problem that the knee joint assisting device cannot smoothly share the body load occurs.

Therefore, the present invention can be mounted in close contact with the frames of the knee joint assist device to the attachment surface of the femur and the tibia even when the attachment surface of the femur and the attachment surface of the tibia are not parallel to each other. If the shape of the femur and tibia is not normal and the attachment surface of the femur and tibia is not located on the same plane, the frames of the knee joint aid are attached to the femur and tibia. An object of the present invention is to provide a knee joint assistive device capable of smoothly sharing a load.

In addition, the present invention is fixed between the femur and the tibia, while maintaining a constant joint spacing, as well as flexion movement of the knee joint as well as help to smoothly perform the rotational movement of the knee joint within a predetermined angle range of the knee of the surgical patient, etc. An object of the present invention is to provide a knee joint aid that enables three-dimensional movement of a joint.

Knee joint auxiliary device for connecting the femur and tibia according to one aspect of the present invention, a plurality of femoral fixing through-holes are formed on one side, the femur side frame is formed through the rotation center through hole on the other side; A coupling means having a rotation center through hole corresponding to the rotation center through hole of the femur side frame at one side thereof, and a coupling part formed at the other side thereof; A tibial side frame having a coupling part corresponding to a coupling part of the coupling means at one side, and a plurality of tibial fixing through holes formed at the other side; A coupling member for rotatably coupling the femoral side frame and the coupling means to each other through a rotation center through hole of the femur side frame and a rotation center through hole of the coupling means; A plurality of fastening means for fixing the femoral side frame and the tibia side frame to the femur and tibia, respectively; And coupling means for coupling the coupling portion of the coupling means and the coupling portion of the tibial frame.

In the knee joint assisting apparatus according to an embodiment of the present invention, the plurality of fastening means, one end is formed with a first screw thread and passes through the plurality of femoral fixation through holes or the plurality of tibial fixation through holes A plurality of screws inserted into the femur or tibia, the other end of which has a second thread and a third thread to which nuts are fastened; Lower surface of the femoral side frame or the tibia by screwing to a second thread of the plurality of screws exposed from the lower surface of the femoral side frame or the lower surface of the tibial side frame and rotating about each of the plurality of screws A plurality of positioning nuts capable of adjusting the length of each of the plurality of screws exposed from the bottom surface of the side frame; And a plurality of upper nuts respectively fastened to third threads of the plurality of screws exposed from the upper surface of the femoral side frame or the upper surface of the tibial side frame.

In addition, in the knee joint assisting device according to an embodiment of the present invention, at least one of the plurality of fastening means for fixing the tibial side frame to the tibia is a predetermined angle with respect to an axis perpendicular to the horizontal plane of the tibial side frame For example, it may be configured to allow movement within an angle range of about 15 °. Specifically, the female screw portion which is rotatable in all directions while being screwed to the male screw portion of the screw constituting the movable fastening means may be installed to be pivotable in the through hole through which the movable fastening means passes.

In addition, in the knee joint assisting device according to an embodiment of the present invention, the coupling means is coupled to the coupling portion of the coupling means having an insertion groove, and the tibial side frame having a protrusion inserted into the insertion groove The insertion groove has a cutout portion in which a part of its periphery is cut out, and a space portion formed inside the cutout portion, and the protrusion is guided to the cutout portion of the insertion groove so as to be rotatable in the space portion. It may include flanges that can be clamped.

In addition, in the knee joint assisting device according to an embodiment of the present invention, the space portion is configured to correspond to the shape of the protrusion and the flange, the incision and the flange relative to each other relative rotation within a predetermined angle range It may be formed to be possible. The angle may be determined in the range of 10 ° to 170 °. In addition, in the knee joint assisting device according to an embodiment of the present invention, the coupling portion of the tibia frame may be connected to the coupling portion of the coupling means by a clamping screw.

In addition, in the knee joint assisting apparatus according to an embodiment of the present invention, the femur side frame and the tibia side frame may each include a plurality of pin holes to which the positioning pins can be fitted. In addition, in the knee joint assisting device according to an embodiment of the present invention, it is preferable that bearings are provided in the rotation center through hole of the femoral side frame and the rotation center through hole of the coupling means, respectively.

According to the present invention, even when the attachment surface of the femur and the attachment surface of the tibia are not parallel to each other, the frames of the knee joint assisting device capable of three-dimensional movement during the procedure are mounted in close contact with the attachment surface of the femur and the attachment surface of the tibia. can do.

In addition, according to the present invention, even when the shape of the femur and tibia is not normal and the attachment surface of the support device of the femur and the attachment surface of the support device of the tibia are not located on the same plane, the knee which is capable of three-dimensional movement during the procedure By closely attaching frames of the joint aid to the femur and tibia, the effect of smoothly sharing the body load can be obtained.

In addition, the present invention is fixed between the femur and tibia to maintain the joint spacing while maintaining a constant joint joint as well as to facilitate the rotational movement of the knee joint within a predetermined angle range, such as surgery patients There is an advantage to enable three-dimensional movement of the knee joint.

1 is a perspective view showing the overall configuration of the knee joint aid according to an embodiment of the present invention.

Figure 2 is a perspective view showing the major components of the knee joint assistive device according to an embodiment of the present invention.

Figure 3 is a longitudinal sectional view showing the overall configuration of the knee joint assistive device according to an embodiment of the present invention.

Figure 4 is a longitudinal cross-sectional view of the femur side frame, coupling means and the tibia side frame of the knee joint aid in accordance with an embodiment of the present invention.

5 to 7 is a view showing the assembly process of the main components of the knee joint aid according to an embodiment of the present invention.

8 is a view showing an operating state of the coupling means of the knee joint aid according to an embodiment of the present invention.

Figure 9 is a partial detailed view of the tibia side frame of the knee joint aid in accordance with another embodiment of the present invention.

10 to 13 is a view showing a state of use of the knee joint assistive device according to an embodiment of the present invention.

Figure 14 is a longitudinal cross-sectional view showing the attachment state of the knee joint aid according to the prior art (Korean Patent No. 10-1110075).

FIG. 15 is a plan view of the state of FIG. 14 to which a knee joint assisting device according to the related art (Korean Patent No. 10-1110075) is attached.

The foregoing objects, features, and advantages will become more apparent from the following examples taken in conjunction with the accompanying drawings. Specific structural to functional descriptions are merely illustrated for the purpose of describing embodiments in accordance with the inventive concept, and embodiments in accordance with the inventive concept may be embodied in various forms and are described in the specification of the present application. It should not be construed as limited to these. Embodiments according to the concept of the present invention can be variously modified and have a variety of forms specific embodiments will be illustrated in the drawings and described in detail in the specification of the present application. However, this is not intended to limit the embodiments in accordance with the concept of the present invention to a specific disclosed form, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but other components may be present in the middle. It should be understood. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between. Other expressions for describing the relationship between components, such as "between" and "immediately between" or "adjacent to" and "directly adjacent to", should be interpreted as well. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. The terms "comprise" or "have" herein are intended to indicate that the described feature, number, step, operation, component, part, or combination thereof exists, and that one or more other features or numbers, It is to be understood that it does not exclude in advance the possibility of the presence or addition of steps, actions, components, parts or combinations thereof. Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and, unless expressly defined in the specification of the present application, in an ideal or overly formal sense. Not interpreted.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements.

As shown in Figure 1 to 4, the knee joint aid according to an embodiment of the present invention is a femur side frame 100 is fixed to the femur, tibia side frame 200 is fixed to the tibia, the femur side frame Coupling means 300 for rotatably coupling the 100 and the tibial side frame 200 with respect to the horizontal plane and the vertical plane, respectively. The femur side frame 100, the tibia side frame 200 and the coupling means 300 may be made of a high strength and lightweight material, for example, aluminum alloy.

A plurality of femur fixing through holes 111 are formed at one side of the femoral side frame 100, and a rotation center through hole 115 is formed at the other side of the femur side frame 100. In addition, a rotation center through hole 325 is formed at one side of the coupling means 300, and a coupling part 350 is formed at the other side. In addition, the coupling part 250 is formed at one side of the tibial side frame 200, and a plurality of tibia fixing through holes 211 are formed at the other side.

When the femoral side frame 100 and the coupling means 300 are coupled to each other in the knee joint assisting apparatus according to the present invention, the rotation center through hole 115 and the coupling means of the femoral side frame 100 ( After aligning the center of rotation through hole 325 of 300, through these

coupling holes

115 and 325, for example, through a coupling member 335 such as a bolt can be fastened with a nut 336. . The coupling member may be made of a pin and a lock ring having a head, in addition to a bolt and a nut. Boring holes of a predetermined depth are formed in the upper and lower surfaces of the rotation center through hole 115 of the femoral side frame 100 so that the bearing 330 may be mounted in the boring hole (see FIG. 3). In addition, the bearing 130 on the outer circumferential surface of the coupling member 335 passing through the rotation center through hole 115 of the femoral side frame 100 and the rotation center through hole 325 of the coupling means 300. ) Can be mounted. The

bearings

130 and 330 may be made of ABS resin, PTFE, resin, or the like, but are not limited thereto, and may be made of any material.

In addition, as shown in Figures 2 to 4, the knee joint assisting device according to the present invention is the coupling portion 350 of the coupling means 300 and the coupling portion 250 of the tibial side frame 200 And engaging means for engaging. The coupling means includes a coupling portion 350 of the coupling means having an insertion groove 351 and a coupling portion of the tibial side frame 200 having a protrusion 251 inserted into the insertion groove 351. Consists of 250. The insertion groove 351 has a cutout portion 352 of which a part of the circumference is cut out, and a space portion formed inside the cutout portion 352. The protrusion 251 may be provided with a flange 252 which is guided to the cutout 352 of the insertion groove 351 to be rotatably fitted in the space. Therefore, the space portion located inside the cutout 352 is configured to correspond to the shape of the protrusion 251 and the flange 252.

The protrusion 251 is inserted in the state where the flange 252 of the coupling part 250 of the tibial side frame 200 is aligned with the cutout 352 of the coupling part 350 of the coupling means 300. When the protrusion 251 with the flange 252 rotates in the insertion groove 351 after being inserted into the groove 351, the position of the flange 252 is shifted from the position of the cutout 352. As a result, the protrusion 251 does not fall out of the insertion groove 351. Thus, the coupling means 300 and the tibia side frame 200 may be coupled relative rotation in a plane perpendicular to the tibia side frame plane, whereby the femur side frame 100 and the tibia The side frame 200 may be coupled to allow relative rotation in a plane perpendicular to the femoral side frame and the tibial side frame plane (see FIGS. 5-7 and 10-13). The cutout 352 of the insertion groove 351 and the flange 252 of the protrusion 251 may be formed to allow relative rotation within a predetermined angle range with respect to each other. The angle may be determined in the range of 10 ° to 170 °.

When coupling the coupling portion 350 of the coupling means 300 and the coupling portion 250 of the tibial side frame 200 configured as described above, the cutout 352 and the insertion of the insertion groove 351 After the flanges 252 of the protrusion 251 are aligned in alignment (see FIG. 5), and then the protrusion 251 is inserted into the insertion groove 351 (see FIG. 6), the tibial side frame ( The tibial side frame 200 is rotated so that the lower surface of the 200 is parallel to the surface of the tibia. The rotation range in the vertical plane of the tibial frame 200 with respect to the femoral side frame 100 is preferably set in a range of 60 ° in the clockwise and counterclockwise directions, respectively. By such a configuration, the present invention is fixed between the femur and tibia to maintain the joint spacing while maintaining the joint joint as well as flexion movement of the knee joint as well as assisted to perform the rotational movement of the knee joint within a predetermined angle smoothly There is an advantage that enables the three-dimensional movement of the knee joint of the back.

Optionally, in the coupling of the coupling means 300 and the tibial frame 200 in the knee joint assisting device according to the present invention, the protrusion 251 is inserted into the insertion groove 351 and then aligned. A female screw formed in the coupling portion 350 of the coupling means 300 by passing through a coupling member 360 such as a clamping screw or a clamping bolt through a through hole formed in the coupling portion 250 of the tibial side frame 200. It can also be screwed into the part and fixed.

When the coupling member 360 such as the clamping screw or the clamping bolt is fixed to the coupling portion 250 of the tibial frame 200 and the coupling portion 350 of the coupling means 300, FIG. As shown, a predetermined axial direction of the coupling member 360 between the end of the coupling portion 250 of the tibial side frame 200 and the end of the coupling portion 350 of the coupling means 300. It is preferable to set the interval c.

When the axial spacing c is set in this way, the axial force acting when the coupling part 250 of the tibial frame 200 and the coupling part 350 of the coupling means 300 is fixed. Due to this, the lower surface of the femur side frame 100 may be separated from the femur side or the lower surface of the tibia side frame 200 may be prevented from generating a force to be separated from the tibia side.

1 to 4, three femoral fixing through holes 111 may be formed in the femoral side frame 100. In addition, the femoral fixing through hole 111 may be formed by a combination of a small diameter through hole 111 a disposed below and a large diameter through hole 111 b disposed above (see FIG. 4). The small diameter through hole 111a and the large diameter through hole 111b are preferably formed concentrically. In addition, a plurality of fastening means are coupled to the femoral fixing through-holes 111 to fix the femoral side frame 100 to the femur.

The plurality of fastening means of the femur side, one end is formed with a first screw thread (142a) is passed through the plurality of fixing holes through the femur 111 is inserted into the femur, the other end is the second fastening nuts A plurality of screws 142 on which threads and third threads are formed; The femur by screwing to the second thread of the plurality of screws 142 exposed from the lower surface of the femur side frame 100 and rotating clockwise or counterclockwise with respect to each of the plurality of screws 142. A plurality of positioning nuts 141 that can adjust the length of each of the plurality of screws 142 exposed from the bottom surface of the side frame 100; And a plurality of upper nuts 144 fastened to third threads of the plurality of screws 142 exposed from the upper surface of the femoral side frame 100, respectively.

The plurality of upper nuts 144 may be disposed in the through holes 111b of the upper large diameter of the thigh fixing through holes 111.

When the femoral side frame 100 is fixed to the femur by using a plurality of fastening means of the femur side having such a configuration, the plurality of upper nuts 144 function as a locking nut and thus the plurality of screws 142. While preventing the nuts fastened to the upper end of the loosening, the plurality of positioning nuts 141 can adjust the length of the plurality of screws 142 according to the state of the surgical patient. The screw 142 and the nut 144 are preferably made of a material having high strength and corrosion resistance, for example, stainless steel.

In addition, in the exemplary embodiment of the present invention illustrated in FIGS. 1 to 4, four tibia fixing through holes 211 may be formed in the tibial side frame 200. The tibial fixing through hole 211 may be a combination of a small diameter through hole 211 a disposed below and a large diameter through hole 211 b disposed above (see FIG. 4). The small diameter through hole 211a and the large diameter through hole 211b are preferably formed concentrically. In addition, a plurality of fastening means are coupled to the tibial fixing through holes 211 to fix the tibial side frame 200 to the tibia.

The plurality of fastening means of the tibia side, one end is formed with a first screw thread (242a) is passed through the plurality of tibial fixing through-hole 211 is inserted into the tibia, the other end is the second fastening nut A plurality of screws 242 on which threads 242b and third threads 242c are formed; Each screw threaded to the second thread 242b of the plurality of screws 242 exposed from the lower surface of the tibial side frame 200 and rotated clockwise or counterclockwise with respect to each of the plurality of screws 242. A plurality of positioning nuts 241 capable of adjusting the length of each of the plurality of screws 242 exposed from the lower surface of the tibial side frame 200; And a plurality of upper nuts 244 respectively fastened to third threads 242c of the plurality of screws 242 exposed from the upper surface of the tibial side frame 200.

Preferably, the plurality of upper nuts 244 are disposed in the through holes 211b of the upper large diameter of the tibial fixing through holes 211.

When the tibial side frame 200 is fixed to the tibia by using a plurality of fastening means of the tibial side having such a configuration, the plurality of upper nuts 244 function as a locking nut and thus the plurality of screws 242. While preventing the nuts fastened to the upper end of the loosening, the plurality of positioning nuts 241 can adjust the length of the plurality of screws 242 according to the state of the surgical patient. The screw 242 and the nut 244 are preferably made of a material having high strength and corrosion resistance, for example, stainless steel.

In addition, in the knee joint assisting apparatus according to an embodiment of the present invention, as shown in partial detail in Figure 9, the second of the plurality of fastening means of the tibia side for fixing the tibia side frame 200 to the tibia A pivot portion 243c having a female screw portion 243b rotatable in all directions may be provided in the through hole through which the screw 242 passes. In this case, an angle that can be rotated in all directions with respect to an axis perpendicular to the horizontal plane of the tibial frame 200 of the screw 242 may be set to, for example, 15 °, and the pivot part 243c. The interference fit within the through hole of the tibia frame 200 can be coupled. As such, the screw 242 is rotatably configured about the vertical axis so that the insertion direction of the screw 242 can be freely changed according to the shape of the patient or the shape of the femur and tibia.

In addition, as described above, in the knee joint assisting device according to an embodiment of the present invention, positioning

nuts

141 and 241 on the lower surface of the femoral side frame 100 or the lower surface of the tibial side frame 200. ) May be additionally installed (see FIG. 3). Using these

positioning nuts

141 and 241, the shape of the femur and tibia is not normal, and the position adjustment of the femoral auxiliary device and the tibial auxiliary device is not performed on the same plane. The height of the femoral side frame 100 or the tibia side frame 200 can be adjusted by

nuts

141 and 241 so that the femoral side frame 100 and the tibial side frame 200 are disposed on the same plane. It becomes possible. This configuration of the present invention enables the adjustment of the three-dimensional movement of the frame of the knee joint assistive device during the procedure, by the three-dimensional movement by closely attaching the frames of the knee joint assistive device to the femur and tibia The body load can be smoothly shared.

In addition, in the knee joint assistive device according to an embodiment of the present invention, the femur side frame 100 and the tibia side frame 200 can be fitted with positioning pins 138, 238 (see Fig. 1), respectively. It is preferred to include a plurality of pinholes 118 and 218 (see FIG. 2). Using the plurality of

pinholes

118 and 218 and the positioning pins 138 and 238 fitted thereto, the femoral side frame 100 and the tibia side frame 200 when the knee joint assisting device of the present invention is operated. ) Can be fixed in the correct position of the femur and tibia.

Next, the operation and effects of the knee joint aid of the present invention will be described.

In the knee joint assisting apparatus according to the present invention, the femoral side frame 100 and the tibia side frame 200 are connected by the coupling means 300, and the femoral side frame 100 and the tibial side frame ( 200, the coupling member 335, such as a through-bolt as a rotation axis can be rotated on a horizontal plane. Accordingly, while maintaining a constant distance between the femur and tibia in the knee joint, it serves to assist flexion and rotation.

In addition, the knee joint assisting device according to the present invention, the flange 252 of the coupling portion 250 of the tibial side frame 200 is the cutout 352 of the coupling portion 350 of the coupling means 300 And the protrusion 251 is fitted into the insertion groove 351 in the state of being fitted with the protrusion 251 with the flange 252 is rotated in the insertion groove 351, the tibial side frame 200 Rotational movement can be performed on this vertical plane. Accordingly, even when the attachment surface of the femur and the attachment surface of the tibia are not parallel to each other, any one of the femoral side frame 100 and the tibia side frame 200 is rotated by a predetermined angle with respect to the other to make the femur side The frame 100 and the tibial side frame 200 may be mounted to be in close contact with the attachment surface of the femur and the attachment surface of the tibia, respectively.

In addition, the femur side frame 100 or the tibia side frame 200 by additionally installing the positioning nuts (141, 241) on the femur side frame 100 or the tibia side frame 200 You can adjust the height. Accordingly, even when the attachment surface of the femur and the attachment surface of the tibia are not parallel to each other, the

frames

100 and 200 of the knee joint assist device can be mounted in close contact with the attachment surface of the femur and the attachment surface of the tibia.

By the configuration of the knee joint aid of the present invention, by attaching the frames of the knee joint aid in close contact with the femur and tibia, the knee joint aid is to function to smoothly share the body load.

Next, the process of mounting the knee joint assistive device according to an embodiment of the present invention to the knee joint site will be described.

First, the bearing 130 is inserted into the rotation center through hole 115 of the femur side frame 100 and the rotation center through hole 325 of the coupling means 300 is connected to the femur side frame 100. After aligning the center of rotation through hole 115 and the axis of the center of the rotation), the femoral side frame 100 and the coupling means using a coupling member 335 and a nut 336, such as a through bolt. The 300 is coupled, but rotatable (ie, joint movement) is coupled around the coupling member 335 such as the through bolt. Subsequently, the flange 252 of the cutout 352 of the insertion groove 351 of the coupling portion 300 of the coupling means 300 and the protrusion 251 of the coupling portion 250 of the tibial frame 200. ) Are matched (see FIG. 5). Then the projection 251 of the tibial side frame 200 is inserted into the insertion groove 351 of the coupling means 300 (see FIG. 6), and then the lower portion of the tibial side frame 200 The tibial side frame 200 is rotated so that the surface is parallel to the surface of the tibia.

In addition, the positioning pins 138 and 238 are inserted into the pinhole 118 of the femur side frame 100 and the pinhole 218 of the tibial side frame 200, respectively, and the femur side frame 100 The tibia side frame 200 may be fixed at the correct positions on the femur and tibia, respectively.

In this state, a plurality of screws (142, 242) are applied to the femur and tibia by penetrating a tool such as a drill into the through holes 111 of the femoral side frame and the through holes 211 of the tibia side frame 200. ) To form insertion grooves. The plurality of

screws

142 and 242 pass through the through holes 111 of the femoral side frame 100 and through holes 211 of the tibial side frame 200 to pass the plurality of screws 142. 242) screw one end to the femur and tibia. In this case, as shown in FIG. 9, in the second through hole of the tibial frame 200 indicated by “A” in FIG. According to the shape of the femur and tibia, the insertion direction of the screw 242 passing through the second through hole may be different.

In FIG. 9, although the pivot part 243b is installed in the second through hole from the coupling part 250 of the tibial side frame 200, other through holes of the tibial side frame 200 are needed. The pivot part 243b may also be installed. In addition, a pivoting part may be installed in the through holes of the thigh side frame 100. One end of the plurality of

screws

142 and 242 is formed by a self-tapping screw, and the plurality of

screws

142 and 242 are fastened in the femur and tibia while cutting the female screw in the femur and tibia. It is preferable to be fixed. Then, in the state where the femoral side frame 100 and the tibial side frame 200 are separated from the plurality of

screws

142 and 242, the plurality of

positioning nuts

141 and 242 are connected to the plurality of screws. It is adjusted to be located at a predetermined height of the

fields

142, 242. Next, the positioning nut is passed through the other ends of the plurality of

screws

142 and 242 into the plurality of through

holes

111 and 211, and the height is adjusted to the plurality of

screws

142 and 242. The femur side frame 100 and the tibia side frame 200 are seated on the

fields

141 and 242. At this time, the

position adjusting nuts

141 and 242 may be rotated as needed to further adjust the heights of the femoral side frame 100 and the tibia side frame 200. Then, a plurality of upper nuts 144 on the third thread of the plurality of

screws

142 and 242 exposed from the upper surface of the femoral side frame 100 and the upper surface of the tibial side frame 200. 244, so that the femoral side frame 100 and the tibial side frame 200 are firmly tightened between the

positioning nuts

141, 242 and the

upper nuts

144, 244.

When the femoral side frame 100 and the tibial side frame 200 need relative rotational movement to each other in a plane perpendicular to the plane of the femur side frame or the tibia side frame, the coupling part 350 of the coupling means 300 ) And the coupling part 250 of the tibial side frame 200 to maintain rotational motion with each other.

Alternatively, the clamping screw or clamping bolt when the femoral side frame 100 and the tibial side frame 200 need to be limited in relative rotational motion to each other in a plane perpendicular to the plane of the femur side frame or the tibial side frame. Using the coupling member 360, such as coupling portion 250 of the tibial side frame 200 may be fixed to the coupling portion 350 of the coupling means 300.

In the knee joint assisting apparatus according to the present invention, the femoral side frame 100 and the tibia side frame 200 may be disposed on the same plane as shown in FIGS. 10 and 11, As shown, the tibial side frame 200 may be disposed to be rotated a predetermined angle clockwise or counterclockwise with respect to the femoral side frame 100.

After performing the knee joint aid of the present invention as described above, clean and sterilization treatment is performed. The knee joint assisting apparatus according to the present invention has a function of sharing the load of the knee joint connecting the femur and the tibia, maintaining a constant distance between the femur and the tibia, and assisting the flexion and rotational movements. It can be applied to microfracture surgery, culture transplantation, etc.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

Claims

In the knee joint aid connecting the femur and tibia,

A plurality of femoral fixing through-holes are formed at one side, and a femur-side frame having a rotation center through-hole formed at the other side thereof;

A coupling means having a rotation center through hole corresponding to the rotation center through hole of the femur side frame at one side thereof, and a coupling part formed at the other side thereof;

A tibial side frame having a coupling part corresponding to a coupling part of the coupling means at one side, and a plurality of tibial fixing through holes formed at the other side;

A coupling member for rotatably coupling the femoral side frame and the coupling means to each other through a rotation center through hole of the femur side frame and a rotation center through hole of the coupling means;

A plurality of fastening means for fixing the femoral side frame and the tibia side frame to the femur and tibia, respectively; And

And a coupling means for engaging the coupling portion of the coupling means and the coupling portion of the tibial frame.
The method of claim 1,

The plurality of fastening means,

One end is formed with a first thread and is inserted into the femur or tibia through the plurality of femoral fixation through holes or the plurality of tibial fixation through holes, and the other end includes a second thread and a third thread to which nuts are fastened. A plurality of screws formed;

Lower surface of the femoral side frame or the tibia by screwing to a second thread of the plurality of screws exposed from the lower surface of the femoral side frame or the lower surface of the tibial side frame and rotating about each of the plurality of screws A plurality of positioning nuts capable of adjusting the length of each of the plurality of screws exposed from the bottom surface of the side frame; And

And a plurality of upper nuts respectively fastened to third threads of the plurality of screws exposed from the upper surface of the femoral side frame or the upper surface of the tibial side frame.
The method according to claim 1 or 2,

At least one of the plurality of fastening means for fixing the tibia side frame to the tibia is characterized in that the knee joint assist mechanism is configured to be capable of movement within a predetermined angle range with respect to the axis perpendicular to the horizontal plane of the tibia side frame .
The method of claim 3, wherein

Knee joint assistance, characterized in that the female screw portion that is rotatable in all directions while being screwed to the male screw portion of the screw constituting the movable fastening means, is rotatably installed in the through hole through which the movable fastening means passes. Instrument.
The method according to any one of claims 1 to 4,

The coupling means includes a coupling portion of the coupling means having an insertion groove, and a coupling portion of the tibial frame having a protrusion inserted into the insertion groove,

The insertion groove has a cutout portion cut out of the circumference portion, and a space portion formed inside the cutout portion,

The protruding portion is guided to the incision of the insertion groove knee joint assist device characterized in that it has a flange that can be inserted to be rotatable in the space.
The method of claim 5,

The space portion is configured to correspond to the shape of the protrusion and the flange, the incision and the flange is knee joint assist mechanism characterized in that it is formed to enable relative rotation within a predetermined angle range with respect to each other.
The method according to any one of claims 1 to 6,

The joint part of the tibial frame is knee joint assistive device, characterized in that connected to the coupling portion of the coupling means by a clamping screw.