TWI793895B - Osteotomy Guide Components - Google Patents

Abstract

The invention provides an osteotomy guide assembly, which includes an upper guide, a lower guide, a locking part and a locking part. A first guide groove and a second guide groove are adapted to be formed between the upper guide part and the lower guide part. The locking portion includes a first portion disposed on the upper guide and a second portion disposed on the lower guide. The locking part corresponds to the locking part, and by locking the locking part to the locking part, the upper guiding part, the lower guiding part and the locking part are combined together. In this way, the upper guide and the lower guide can be fixed to a predetermined bone position when the osteotomy is performed.

Description

Osteotomy Guide Components

The present invention provides an osteotomy guide assembly, especially an osteotomy guide assembly for guiding a scalpel to perform osteotomy.

For patients with tibial curvature, the medical community has developed a treatment called High Tibial Osteotomy (HTO). The surgical procedure involves making an incision at a specific location on the patient's tibia (usually the top near the inside of the knee), and then expanding the incision at a specific angle according to the degree of curvature of the individual patient's tibia. Then, bone cement is injected into the distracted incision as a support, and bone plates and bone screws are applied to the outside of the tibia for fixation.

However, although the current HTO surgery can achieve a very good effect through careful assessment of each patient before surgery, it still relies heavily on the operator's current judgment and surgical experience. For inexperienced operators, there may be errors in the plane of the incision or the opening angle of the incision, which will affect the surgical effect. Therefore, at present, when performing high tibial osteotomy, two guide plates are first fixed to the tibia, and the scalpel can make an incision from between the two guide plates to the tibia.

Although the conventional technology can reduce the error rate of operation by using two guide plates, the two guide plates must be respectively fixed to the tibia, which causes inconvenience to the operator.

The inventor then exhausted his mind and researched carefully, and then developed a guide assembly for osteotomy. After the upper guide and the lower guide can form a combined structure, they can be fixed to the bone position together, thus simplifying the operation of the operator. time operation.

The invention provides an osteotomy guide assembly, which includes an upper guide, a lower guide, a locking part and a locking part. A first guide groove and a second guide groove are adapted to be formed between the upper guide part and the lower guide part. The locking portion includes a first portion disposed on the upper guide and a second portion disposed on the lower guide. The locking part corresponds to the locking part, and by locking the locking part to the locking part, the upper guiding part, the lower guiding part and the locking part are combined together.

In one embodiment, the upper guide includes a first guide plate and a second guide plate connected to the first guide plate, and the lower guide includes a third guide plate and a second guide plate connected to the A fourth guide plate of the third guide plate, wherein the third guide plate is suitable for forming the first guide groove relative to the first guide plate, and the fourth guide plate is suitable for forming the first guide groove relative to the first guide plate The second guide plate forms the second guide groove.

In one embodiment, the first portion of the lock portion is disposed on the first guide plate, and the second portion of the lock portion is disposed on the third guide plate.

In one embodiment, a bottom surface of the upper guiding member is provided with at least a downward protrusion abutting against a top surface of the lower guiding member to form the first guiding groove.

In one embodiment, a top surface of the lower guiding member is provided with at least one upward protrusion abutting against a bottom surface of the upper guiding member to form the first guide groove.

In one embodiment, the locking piece includes a body, the body has a limiting through hole, the locking part is a cylinder with a cross-sectional area smaller than the limiting through hole, and the end of the locking part is provided with a limiting hole. The position-limiting protrusion corresponds to the configuration of the position-limiting through hole, and the position-limiting protrusion is suitable for passing through the position-limiting through-hole to make the locking part rotate relative to the locking part, so that the body limits It is located between a combined structure of the upper guide piece plus the lower guide piece and the limiting protrusion.

In one embodiment, the osteotomy guide assembly further includes a set of rods. The assembly rod is suitable for being located between the first part and the second part of the lock part when the lock part is locked on the lock part, so as to push away the upper guide part and the lower guide part , thereby forming the first guide trench.

In one embodiment, the assembly rod is integrally connected with the locking element.

In one embodiment, the assembly rod has a through hole, and the locking portion has an observation hole passing through the upper guide and the lower guide, and the through hole communicates with the observation hole.

In one embodiment, the assembly rod is assembled on the locking part.

In one embodiment, the locking piece includes a body, the body has a limiting through hole, the assembly rod includes a rod body with a cross-sectional area smaller than the limiting through hole, and fins protruding from the rod body part, and a stop convex part protruding from the rod body and spaced from the wing part, the width of the wing part is larger than the width of the hole of the limiting through hole and shorter than the length of the hole of the limiting through hole , the width of the stop convex part is greater than the hole width and hole length of the limiting through hole, so that the wing part can pass through the limiting through hole, and by making the assembly rod rotate relative to the lock The main body is limited between the stop convex portion and the wing portion.

In one embodiment, a bottom surface of the upper guide member and a top surface of the lower guide member respectively have a groove corresponding to the stop protrusion, and the stop protrusion is suitable for being inserted into the groove.

In one embodiment, the stop protrusion has a maximum width and a main width smaller than the maximum width, the stop protrusion is suitable for being inserted into the groove with the part having the main width, and is suitable for being inserted into the groove with the maximum width. A part of the width is against the upper guide piece and the lower guide piece to limit the insertion depth of the stop protrusion into the groove.

In one embodiment, both the first part and the second part have an external thread, and the locking part is a nut and has an internal thread corresponding to the external thread.

Thereby, the osteotomy guide assembly of the present invention, through the locking member, enables the upper guide member and the lower guide member to form a combined structure and then be fixed to the bone position together, thereby simplifying the operation of the operator. operation during surgery.

100:Osteotomy guide assembly

1: Upper guide

10: The first guide plate

11: Second guide plate

12: The first bone plate

13: bottom surface

14: lower convex part

2: Lower guide

20: The third guide plate

21: The fourth guide plate

22: The second bone plate

23: top surface

24: Convex part

3: Locking part

31: Part 1

32: Part Two

33: Limiting convex part

4: Locking parts

40: Ontology

41: Set up sticks

410: through hole

411: rod body

412: wing part

413: stop protrusion

42: Connecting beam

43:Limiting through hole

44: Joystick

45:Nut

5: Hole opening

h1: Observation hole

L: hole length

R1: external thread

R2: internal thread

t1: the first guide ditch

t2: the second guide ditch

t3: Groove

W1: width

W2: hole width

W3: maximum width

W4: main width

Fig. 1 is a three-dimensional exploded schematic diagram of an osteotomy guide assembly according to a specific embodiment of the present invention.

Fig. 2 is a combined schematic diagram of an osteotomy guide assembly according to a specific embodiment of the present invention.

Fig. 3 is a first schematic cross-sectional view of an osteotomy guide assembly according to a specific embodiment of the present invention.

Fig. 4 is a second schematic cross-sectional view of the osteotomy guide assembly according to a specific embodiment of the present invention.

Fig. 5 is an exploded schematic view of a lock member according to a specific embodiment of the present invention.

Fig. 6 is a front combined schematic diagram of an upper guide and a lower guide according to a specific embodiment of the present invention.

Fig. 7 is a perspective exploded schematic diagram II of the osteotomy guide assembly according to a specific embodiment of the present invention.

In order to fully understand the purpose, characteristics and effects of the present invention, the present invention will be described in detail by the following specific embodiments in conjunction with the accompanying drawings. The description is as follows: Please refer to Fig. 1, Fig. 2 and Fig. 7. The present invention provides an osteotomy guide assembly 100 , which includes an upper guide 1 , a lower guide 2 , a locking part 3 and a locking part 4 . As shown in FIG. 2 , a first guide groove t1 and a second guide groove t2 are suitably formed between the upper guide member 1 and the lower guide member 2 . The locking portion 3 includes a first portion 31 disposed on the upper guide 1 and a second portion 32 disposed on the lower guide 2 . As shown in Figure 1 and Figure 7, the lock piece 4 corresponds to the lock part 3, by locking the lock piece 4 to the lock part 3, the upper guide 1, the lower guide The lead piece 2 and the locking piece 4 are combined together. Since the first part 31 and the second part 32 of the locking part 3 are respectively provided on the upper guide 1 and the lower guide 2, when the lock When the locking part 4 is locked on the locking part 3, the upper guiding part 1 and the lower guiding part 2 are combined together at the same time. When performing an osteotomy, you can hold the locking part 4 (as shown in Figure 1) or the locking part 3 (as shown in Figure 7) and place the osteotomy guide assembly 100 on a predetermined position of the human bone as a whole, and wait for it to be fixed. After the upper guide 1 and the lower guide 2 are removed, the operation can be officially performed by removing the locking member 4 .

As mentioned above, in the osteotomy guide assembly 100 of the present invention, by means of the locking member 4, the upper guide 1 and the lower guide 2 can form a combined structure and be fixed to the bone position together (not shown shown), so as to simplify the operation of the operator during the operation.

As shown in FIG. 1 , FIG. 2 and FIG. 7 , in one embodiment, the upper guide 1 includes a first guide plate 10 and a second guide plate 11 connected to the first guide plate 10 . The lower guiding member 2 includes a third guiding plate 20 and a fourth guiding plate 21 connected to the third guiding plate 20 . The third guide plate 20 is adapted to form the first guide groove t1 relative to the first guide plate 10, and the fourth guide plate 21 is adapted to form the second guide groove t1 relative to the second guide plate 11. Guide ditch t2. The first portion 31 of the lock portion 3 is disposed on the first guide plate 10 , and the second portion 32 of the lock portion 3 is disposed on the third guide plate 20 . The upper guide 1 may further include an upper bone fitting plate 12 , and the lower guide 2 may further include a lower bone fitting plate 22 adapted to be combined with the upper bone fitting plate 12 . The upper bone plate 12 and the lower bone plate 22 are customized for the bone shape of an individual human body, and the upper bone plate 12 and the lower bone plate 12 can be manufactured by knowing the bone shape of the human body through, for example, a tomographic scan. bone plate22. The upper bone fitting plate 12 can be further provided with an opening (not shown), so as to guide the upper guide member 1 to a correct position with pins (not shown) when it is attached to the human bone. In addition, it is shown in FIG. 7 that the upper guide 1 and the lower guide 2 can be respectively provided with openings 5 to be fixed to human bones by screws or other locking elements. The locking part 3 may have an observation hole h1 passing through the upper guide 1 and the lower guide 2, so that X-rays can be used when the osteotomy guide assembly 100 has just been placed at the position of the human bone but has not yet been fixed. An image is taken to determine whether the predetermined fixed position is correct. Preferably, the upper guide 1 and the lower guide 2 can be respectively produced by 3D printing.

As shown in Figures 1 and 2, in one embodiment, the locking member 4 includes a main body 40, the main body 40 has a limiting through hole 43, and the locking part 3 has a cross-sectional area smaller than the limiting through hole 43 after assembly. A cylinder of the through hole 43 , and a limiting convex portion 33 is provided at the end of the locking portion 3 . The limiting convex part 33 can correspond to the configuration of the limiting through hole 43, and the limiting convex part 33 is suitable for passing through the limiting through hole 43 to make the locking part 4 rotate relative to the locking part 3, so that The body 40 is limited between a combined structure of the upper guide 1 and the lower guide 2 and the limiting protrusion 33 . But it doesn't stop there.

As shown in FIG. 7, in one embodiment, both the first part 31 and the second part 32 of the locking part 3 have an external thread R1, and the locking part 4 is a nut 45 and has a corresponding external thread An internal thread R2 of R1.

As shown in Figures 1 and 2, the first guiding groove t1 and the second guiding groove t2 are used to guide the scalpel to cut human bones, wherein the cutting guided by the first guiding groove t1 is related to the subsequent correction. angle. The upper guide 1 and the lower guide 2 can be separated by an appropriate distance to form the first guide groove t1 , of course, the first guide groove t1 can also be directly opened by a scalpel. In order to form the first guide groove t1 before performing osteotomy, in one embodiment, the osteotomy guide assembly 100 may further include a set of rods 41, the set of rods 41 is suitable for the locking member 4 is located between the first part 31 and the second part 32 of the lock part 3 when locked on the lock part 3, so as to push apart the upper guide 1 and the lower guide 2, thereby forming the The first guide trench t1. The assembly rod 41 can be integrally connected to the locking member 4 , but it is not limited thereto. The locking member 4 can include two operating rods 44 extending from the body 40, and the assembly rod 41 can pass through the body 40 and be located between the two operating rods 44, and a connecting beam 42 can operate the two operating rods. A rod 44 is connected to the set of rods 41 . However, the connecting beam 42 can also be disposed on the body 40 . In addition, the set of rods 41 may have a through hole 410 communicating with the observation hole h1 without hindering the preoperative X-ray shooting. After the locking part 4 is locked to the locking part 3 , as long as the operating rod 44 is held by hand, the entire osteotomy guide assembly 100 can be moved. Preferably, the locking element 4 can be produced by 3D printing.

As shown in FIGS. 6 and 7 , in one embodiment, compared with the assembling rod 41 shown in FIGS. 1 and 2 , the assembling rod 41 shown in FIG. 7 is an independent component. The assembly rod 41 includes a rod body 411 and a stop protrusion 413 protruding from the end of the rod body 411 . In FIG. 6 , the bottom surface 13 of the upper guide 1 and the top surface 23 of the lower guide 2 respectively have a groove portion t3 corresponding to the stop protrusion 413 . The stop convex portion 413 is suitable for being inserted into the groove portion t3 to confirm the distance of the human bone that needs to be corrected. Specifically, after the osteotomy is used to make an incision on the human bone, the stop convex part 413 can be inserted into the groove part t3 to push away the upper guide part 1 and the lower guide part 2, so as to confirm the need for correction. The distance to stretch the human bones can be estimated in advance to determine the width of the stop convex portion 413 .

As shown in Figure 3 and with reference to Figure 2, in one embodiment, if there is no assembly rod 41 shown in Figure 2 or Figure 7, a bottom surface 13 of the upper guide 1 can be provided with At least one lower convex portion 14 of the top surface 23 of the guide member 2 forms the first guide groove t1. FIG. 3 shows a plurality of convex portions 14, but it is not limited thereto. During the osteotomy, the lower protrusion 14 can be cut off together, but the upper guide 1 can be made of biodegradable material, so even if it remains in the human body, there will be no adverse effects.

As shown in Figure 4 and with reference to Figure 2 and Figure 3, in one embodiment, if there is no assembly rod 41 shown in Figure 2, the top surface 23 of the lower guide 2 can be provided with abutting against the upper At least one raised portion 24 on the bottom surface 13 of the guide member 1 forms the first guide groove t1. FIG. 4 shows a plurality of raised portions 24, but it is not limited thereto. During the osteotomy, the upper protrusion 24 can be cut off together, but the lower guide 2 can be made of biodegradable material, so even if it remains in the human body, there will be no adverse effects. Of course, the upper guiding part 1 and the lower guiding part 2 can also be provided with the lower convex part 14 and the upper convex part 24 which are offset from each other.

As shown in FIG. 5 and FIG. 6 , in one embodiment, the assembly rod 41 can also be assembled on the locking member 4 . For example, the set of rods 41 includes a rod body 411 with a cross-sectional area smaller than the limiting through hole 43, a fin portion 412 protruding from the rod body 411, and a fin portion 412 protruding from the rod body 411 and spaced from the fin portion. 412 of the stop convex portion 413 . Should The width W1 of the wing portion 412 is greater than the width W2 of the limiting through hole 43 and shorter than the length L of the limiting through hole. The hole width W2 and the hole length L of the hole 43 allow the wing portion 412 to pass through the limiting through hole 43, and the body 40 is limited by rotating the assembly bar 41 relative to the locking member 4. Located between the stop convex portion 413 and the fin portion 412 . The width W1 is the maximum width of the fin portion 412 . The stop protrusion 413 also has a main width W4 smaller than the maximum width W3. The main width W4 of the stop protrusion 413 shown in FIG. 5 may be substantially the same as the width W1 of the wing portion 412 , but is not limited thereto. The stop protrusion 413 is adapted to be inserted into the groove t3 of FIG. 6 with a portion having the main width W4. Specifically, after the osteotomy is used to make an incision on the human bone, the part of the stop protrusion 413 having the main width W4 can be inserted into the groove t3 to push away the upper guide 1 and the lower guide. 2. To confirm the distance to stretch the human bones for correction, the main width W4 of the stop convex portion 413 can be determined by evaluating the distance to be stretched in advance. The portion of the stop protrusion 413 having the maximum width W3 is adapted to abut against the upper guide 1 and the lower guide 2 after the stop protrusion 413 is inserted into the groove t3, so as to limit the stop protrusion. The portion 413 is inserted to the depth of the groove portion t3. As shown in FIG. 2 , when the assembly rod 41 is assembled on the lock member 4 , since the wing portion 412 and the stop convex portion 413 are flat, only a part of the body 40 is used to limit the position. , which are staggered from the limit between the body 40 and the locking part 3 .

The present invention has been disclosed above with preferred embodiments, but those skilled in the art should understand that the embodiments are only used to describe the present invention, and should not be construed as limiting the scope of the present invention. It should be noted that all changes and substitutions equivalent to the embodiment should be included in the scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the scope of the patent application.

100:Osteotomy guide assembly

1: Upper guide

10: The first guide plate

11: Second guide plate

12: The first bone plate

2: Lower guide

20: The third guide plate

21: The fourth guide plate

22: The second bone plate

3: Locking part

31: Part 1

32: Part Two

33: Limiting convex part

4: Locking parts

41: Set up sticks

42: Connecting beam

43:Limiting through hole

44: Joystick

h1: Observation hole

Claims (14)

A guide assembly for osteotomy, comprising: an upper guide; a lower guide, a first guide groove and a second guide groove are adapted to be formed between the upper guide and the lower guide; The lock part includes a first part provided on the upper guide and a second part provided on the lower guide; and a lock part corresponding to the lock part, by using the lock part Locked on the locking part, so that the upper guide, the lower guide and the locking part are combined together. The osteotomy guide assembly as claimed in claim 1, wherein the upper guide includes a first guide plate and a second guide plate connected to the first guide plate, and the lower guide includes A third guide plate and a fourth guide plate connected to the third guide plate, wherein the third guide plate is suitable for forming the first guide groove relative to the first guide plate, the first guide plate The four guide plates are adapted to form the second guide groove relative to the second guide plate. The osteotomy guide assembly according to claim 2, wherein the first part of the locking part is set on the first guide plate, and the second part of the locking part is set on the third guide plate. The osteotomy guide assembly according to claim 1, wherein a bottom surface of the upper guide is provided with at least a lower convex portion abutting against a top surface of the lower guide to form the first guide groove . The osteotomy guide assembly as claimed in claim 1, wherein a top surface of the lower guide is provided with at least one upper protrusion abutting against a bottom surface of the upper guide to form the first guide ditch. The osteotomy guide assembly as described in claim 1, wherein the locking member includes a body, the body has a limiting through hole, and the locking part is a cylinder with a cross-sectional area smaller than the limiting through hole, The end of the locking part is provided with a limiting convex part, the limiting convex part corresponds to the configuration of the limiting through hole, and the limiting convex part is suitable for making the locking part relative to the lock after passing through the limiting through hole. The hinge portion is rotated so that the body is limited between a combined structure of the upper guide piece plus the lower guide piece and the limiting protrusion. The osteotomy guide assembly as claimed in claim 1, further comprising a set of rods, the set of rods is adapted to be located at the first part of the lock part when the lock part is locked on the lock part Between the second part and the upper guide part and the lower guide part, the first guide groove is formed. The osteotomy guide assembly according to claim 7, wherein the set rod is integrally connected to the locking member. The osteotomy guide assembly as described in claim 7, wherein the assembly rod has a through hole, and the locking part has an observation hole passing through the upper guide and the lower guide, and the through hole communicates in the observation hole. The osteotomy guide assembly according to claim 7, wherein the set rod is set on the locking member. The osteotomy guide assembly as described in claim 10, wherein the locking member includes a body, the body has a limiting through hole, and the assembly rod includes a cross-sectional area smaller than the limiting A rod body of the through hole, a fin part protruding from the rod body, and a stop convex part protruding from the rod body and spaced from the fin part, the width of the fin part is larger than that of the limiting channel A hole width of the hole is smaller than a hole length of the limiting through hole, and a width of the stop protrusion is greater than the hole width and hole length of the limiting through hole, so that the tab can pass through the limiting through hole hole, and the main body is limited between the stop convex portion and the wing portion by rotating the assembly rod relative to the lock piece. The osteotomy guide assembly as described in claim 11, wherein a bottom surface of the upper guide and a top surface of the lower guide respectively have a groove corresponding to the stop convex, the stop convex suitable for insertion into the groove. The osteotomy guide assembly as claimed in claim 12, wherein the stop protrusion has a maximum width and a main width less than the maximum width, and the stop protrusion is adapted to be inserted into the part having the main width The part of the maximum width is adapted to abut against the upper guide piece and the lower guide piece so as to limit the insertion depth of the stop protrusion into the groove. The osteotomy guide assembly according to claim 1, wherein both the first part and the second part have an external thread, and the locking part is a nut and has an internal thread corresponding to the external thread.

Images