CN213156212U

CN213156212U - Osteotomy guider for ankle surgery and osteotomy assembly

Info

Publication number: CN213156212U
Application number: CN202021204711.8U
Authority: CN
Inventors: 陆国海
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-05-11
Anticipated expiration: 2030-06-24

Abstract

An osteotomy guider for ankle surgery comprises a handheld part and a blocky guide part, wherein one end of the handheld part is fixedly connected with one end of the guide part. The guide part is provided with a front surface and a back surface, and the front surface is provided with a saw blade guide groove and a plurality of falling needle through holes for the penetration of the Kirschner wire. The saw blade guide groove is linearly penetrated from the front surface of the guide part to the back surface of the guide part in the depth direction. The needle falling through holes are arranged in a clearance mode, hole shafts of the needle falling through holes are located on the central line of the saw blade guide groove in the length direction, and the diameter of each needle falling through hole is larger than the groove width of the saw blade guide groove. An osteotomy assembly for ankle surgery comprises the osteotomy guider for ankle surgery, a plurality of Kirschner wires matched with the osteotomy guider and a saw blade. Adopt the utility model discloses, can guarantee to cut the bone direction and cut planar accuracy, the simple operation nature is high, and the operation security is good, and simple structure, small and exquisite.

Description

Osteotomy guider for ankle surgery and osteotomy assembly

Technical Field

The utility model relates to the technical field of medical equipment, in particular to ankle part operation is with cutting bone director and cutting bone subassembly.

Background

One quarter of the bones of the human body are concentrated in both feet, and ankle injury deformities occur most frequently in all sports trauma disorders. For example, hallux valgus is a more common ankle deformity, which is particularly a complex deformity of the hallux of the ankle moving obliquely to the outside at the first metatarsophalangeal joint and the rotation of the hallux in the axial direction. The hallux valgus is less concerned in the early stage of the disease, but with the time lapse and the age increase, the hallux valgus is easy to get worse gradually, and finally, the hallux valgus is painful and swollen, so that the hallux valgus is difficult to wear shoes and walk, and the daily life of a patient is seriously influenced. Ankle deformity is frequent, making ankle osteotomy one of the widely used surgical operations.

The ankle osteotomy usually needs to realize the V-shaped or Z-shaped isoline-shaped truncation, and the osteotomy mode is to position a truncation plane by a Kirschner wire and then to perform truncation along the truncation plane by an oscillating saw. The standard of the cutting operation is that the cutting direction of the saw blade of the oscillating saw is positioned on the same plane with the Kirschner wire.

However, the prior art has certain disadvantages. During the operation, the surgeon can only adjust the position and angle of the Kirschner wire and the oscillating saw blade entering the bone part by hand and feel. By adopting the mode, two kirschner wires are not easy to form a plane, and the saw blade of the oscillating saw is also difficult to cut along the plane of the kirschner wires, so the accuracy of the osteotomy direction cannot be ensured by the operation mode, and larger errors are easy to generate. When the osteotomy direction is deviated from the osteotomy plane abnormally, the operation complication and iatrogenic injury of the patient can be caused. At present, some auxiliary osteotomy instruments for treating ankle deformity exist, but the instruments have complex structures, are inconvenient to operate and increase the difficulty of operation to a certain extent, so that the instruments are not beneficial to popularization and use; some designs have defects, which cause large bone loss and unsmooth truncation plane, thus seriously affecting healing.

In view of the above, the present invention provides an osteotomy guide and an osteotomy assembly for surgery, which can ensure the accuracy of the osteotomy direction and the osteotomy plane, have a simple structure, and are convenient to use.

Disclosure of Invention

The utility model provides a not enough to prior art exists, the utility model provides a sufficient ankle part operation is with cutting bone director and cutting bone subassembly, this cuts bone director and cuts bone subassembly especially adapted hallux valgus operation, has solved the inaccurate problem of the in-process truncation plane of bare-handed osteotomy in the past.

In order to achieve the above purpose, the utility model adopts the technical scheme that: an osteotomy guide for ankle surgery, the innovation of which is: the portable handheld device comprises a handheld part and a block-shaped guide part, wherein one end of the handheld part is fixedly connected with one end of the guide part. The guide part is provided with a front surface and a back surface, and the front surface is provided with a saw blade guide groove and a plurality of falling needle through holes for the penetration of the Kirschner wire. The saw blade guide groove is linearly penetrated from the front surface of the guide part to the back surface of the guide part in the depth direction. The needle falling through holes are arranged in a clearance mode, hole shafts of the needle falling through holes are located on the central line of the saw blade guide groove in the length direction, and the diameter of each needle falling through hole is larger than the groove width of the saw blade guide groove.

An osteotomy component for ankle surgery, the innovation is that: comprises the osteotomy guider for the ankle surgery, a plurality of kirschner wires matched with the osteotomy guider and a saw blade.

The relevant content in the above technical solution is explained as follows:

1. in the above-described embodiment, the "front side" of the guide portion is used to contact the body surface (i.e., the affected part surface of the patient), and the "back side" of the guide portion faces the operator (i.e., the operating surgeon).

2. In the scheme, the groove width of the saw blade guide groove is matched with the thickness of the saw blade required by the operation; the aperture of the needle falling through hole is matched with the diameter of the kirschner wire required by the operation.

3. In the scheme, the thin saw blade is adopted for cutting bones, the suitable distance between the needle falling through holes is combined, the bone loss is small, the cut plane is smooth, and the bone seam healing is facilitated.

4. In the above scheme, the osteotomy guide and the osteotomy component can be disposable products and can also be general surgical devices. When the device is used as a general surgical device, the disinfection mode of the medical instruments for the conventional operation such as high-temperature high-pressure disinfection, ultraviolet disinfection or ultrasonic disinfection and the like can be adopted.

5. In the above scheme, preferably, the hole pitch between two adjacent needle falling through holes is greater than or equal to 2 mm. Preferably, the hole pitch of two adjacent needle falling through holes is 5 mm. The hole intervals of a plurality of adjacent needle falling through holes can be combined and matched, a plurality of cutting distances formed in one-time operation can be combined, and the optimal structure gives consideration to the actual clinical precision requirement, the cut plane smoothness and the simplification of the guider structure.

6. In the above aspect, preferably, one end of the blade guide groove in the longitudinal direction thereof penetrates through one end surface of the guide portion.

7. In the above aspect, preferably, the saw blade guide groove is provided with a needle falling through hole at each of two ends in the length direction. The structure is beneficial to reducing the volume of the guider, improves the convenience of use and also is beneficial to saving materials.

8. In the above aspect, preferably, a knurl is provided on a surface of the hand-held portion for anti-slip.

9. In the above aspect, preferably, the saw blade guide groove has a groove width ranging from 0.5 mm to 0.7 mm, and the needle drop through hole has an aperture ranging from 1.5mm to 1.7 mm. As a further preference, the saw blade has a thickness of 0.5 mm and a width of 5 mm; the diameter of the Kirschner wire is 1.5 mm. This configuration is the preferred configuration in view of the actual clinical requirements of the ankle surgery.

The utility model discloses a theory of operation does:

with one positioning and truncation of a plane of truncation being one truncation operation, a series of truncation operations are typically required throughout the ankle osteotomy. According to clinical actual conditions, to adopting the utility model discloses a series of operations of cuting can all adopt two pieces of kirschner wire location, also can all adopt a piece of kirschner wire location, can also partly cut the operation and adopt two pieces of kirschner wire location, part to cut the operation and adopt a piece of kirschner wire location.

The cutting operation of positioning by using one kirschner wire is as follows: firstly, inserting one end of a Kirschner wire into a bone along a preset truncation plane to be used as a rotating shaft for positioning the truncation plane; the osteotomy guider is sleeved on the Kirschner wire through a needle falling through hole, so that the osteotomy guider can rotate around the Kirschner wire by any angle; adjusting the osteotomy guider to a proper angle, and positioning by combining external force to enable the Kirschner wire and the saw blade guide groove to be positioned on a preset truncation plane; then, the kirschner wire is used as one end part of the saw blade, and cutting and truncation are carried out along the saw blade guide groove.

The 'cutting operation by adopting two kirschner wires for positioning' means that: firstly, inserting one end of a first kirschner wire into a bone along a preset truncation plane so as to position a rotating shaft of the truncation plane; the osteotomy guider is sleeved on the Kirschner wire through a needle falling through hole, so that the osteotomy guider can rotate around the Kirschner wire by any angle; after the osteotomy guider is adjusted to a proper angle, selecting a needle falling through hole with a proper distance, penetrating a second kirschner wire into the needle falling through hole, and inserting the second kirschner wire into a bone, so that the two kirschner wires and the saw blade guide groove are positioned on the same plane; then cutting and cutting off the steel wire along a saw blade guide groove between two Kirschner wires by using a saw blade.

It should be noted that:

first, two kinds of locate mode all can realize cutting planar accurate control, and this accurate control not only includes that accurate control cuts plane self for strict plane, still includes that accurate control should cut plane and kirschner wire coplanar.

Second, in both positioning modes, a cut-off plane at an arbitrary angle around the kirschner wire as a rotation axis can be realized. Therefore, through a series of cutting operations, the utility model discloses can realize the broken line shape of arbitrary shape and cut the bone.

Thirdly, the 'cutting operation using one kirschner wire for positioning' is generally applicable to the tail end cutting in the zigzag cutting, or flexibly applicable to other cutting requiring special cutting length in clinic.

Fourthly, for the 'cutting operation by adopting two kirschner wires for positioning', continuous operation can be realized. Namely, after the cutting operation of positioning by two kirschner wires is completed, the first kirschner wire can be pulled out, and then the next cutting operation is continued by taking the second kirschner wire as a rotating shaft; the "next cutting operation" may be "a cutting operation for positioning with two kirschner wires", or "a cutting operation for positioning with one kirschner wire".

The utility model has the advantages as follows:

at first, adopt the utility model discloses can realize not only realizing cutting plane self for strict plane to cutting planar accurate control, can also realize cutting plane and ke shi needle coplanar technological effect. Can effectively avoid the operation complication and iatrogenic injury caused by abnormal deviation of the osteotomy direction and the osteotomy plane in the prior art.

Secondly, the utility model discloses before cutting the plane operation each time, can all do the adjustment of arbitrary angle around the ke shi needle as the rotation axis to can realize the broken line shape of arbitrary shape and cut the bone, the flexible operation, the convenience is high.

Moreover, in the cutting operation of positioning by adopting two kirschner wires, the two kirschner wires can be ensured to be arranged on the same plane, and continuous operation can be adopted. The continuous operation is beneficial to improving the convenience of fold line-shaped cutting operation, is beneficial to reducing damage and has good operation safety.

In addition, the hole spacing of a plurality of adjacent needle falling through holes can be combined and matched, the cutting distance suitable for forming by combining various once-through operations is obtained, the structure has higher adaptability, and the requirements of clinical precision and the simplification of the guider structure are considered.

In a word, the utility model is suitable for the ankle osteotomy, in particular for the hallux valgus osteotomy. Adopt the utility model discloses can guarantee to cut the bone direction and cut planar accuracy, the simple operation nature is high, and the operation security is good, and simple structure, small and exquisite.

Drawings

FIG. 1 is a first schematic structural view of the osteotomy guide of the present invention;

FIG. 2 is a second schematic structural view of the osteotomy guide of the present invention;

FIG. 3 is a schematic diagram of the cutting operation of the osteotomy guide assembly of the present invention using a Kirschner wire for positioning on a hallux model;

FIG. 4 is a schematic diagram of the cutting operation of the osteotomy guiding assembly of the present invention using two kirschner wires for positioning on the hallux model.

In the above drawings: 1. a guide portion; 2. a hand-held portion; 3. a saw blade guide slot; 4. a needle falling through hole; 5. a Kirschner wire; 6. a saw blade; 7. a human hallux-toe model; 8. a front side; 9. and (4) the reverse side.

Detailed Description

The invention will be further described with reference to the following drawings and examples:

the first embodiment is as follows: osteotomy guider for ankle surgery

Referring to the attached drawings 1 to 4, an osteotomy guide for ankle surgery, which is particularly suitable for hallux valgus osteotomy surgery, comprises a handheld part 2 and a block-shaped guide part 1, wherein one end of the handheld part 2 is fixedly connected with one end of the guide part 1. Knurling is arranged on the surface of the handheld portion 2 and used for preventing slipping.

The guide part 1 is approximately a cuboid, a front surface 8 and a back surface 9 are arranged on the guide part, and a saw blade guide groove 3 and seven needle falling through holes 4 for the penetration of the Kirschner wire 5 are arranged on the front surface 8; the saw blade guide groove 3 penetrates through the front surface 8 of the guide part 1 to the back surface 9 of the guide part 1 along a straight line in the depth direction of the saw blade guide groove; the needle falling through holes 4 are arranged in a clearance mode, hole shafts of the needle falling through holes are located on the central line of the saw blade guide groove 3 in the length direction, and the diameter of the needle falling through holes 4 is larger than the groove width of the saw blade guide groove 3. In this embodiment, the saw blade guide groove 3 has a groove width of 0.6, and the needle drop through hole 4 has a diameter of 1.6 mm.

In this embodiment, the saw blade guide slot 3 has a needle falling through hole 4 formed at each of the two ends thereof in the length direction.

In the embodiment, the front surface of the guide part 1 is taken as a reference, one end of the guide part connected with the handheld part 2 is taken as a starting end, and the distances between the first needle falling through hole 4 and the second needle falling through hole 4, between the second needle falling through hole 4 and the third needle falling through hole 4, between the fifth needle falling through hole 4 and the sixth needle falling through hole 4, and between the sixth needle falling through hole 4 and the seventh needle falling through hole 4 are all 5 mm; the distances between the third needle falling through hole 4 and the fourth needle falling through hole 4 and between the fourth needle falling through hole 4 and the fifth needle falling through hole 4 are both 10 mm.

Example two: osteotomy component for ankle surgery

Referring to figures 3 and 4, the ankle surgical osteotomy assembly includes the ankle surgical osteotomy guide of the first embodiment, and two K-wires 5 and a saw blade 6 adapted to mate with the osteotomy guide.

In the present embodiment, the kirschner wire 5 has a diameter of 1.5 mm; the saw blade 6 has a thickness of 0.5 mm and a width of 5 mm.

The use method of the utility model is explained below by taking hallux valgus osteotomy as an example.

First, a first kirschner wire 5 (also called a metal bone wire with a diameter of 1.5mm for internal fixation in osteotomy) is inserted into a bone to be operated (a hallux model shown in fig. 3 and 4) along a preset osteotomy plane.

Then, the osteotomy guider is sleeved on the first kirschner wire 5 through a needle falling through hole 4, so that the front surface 8 of the guiding part 1 is tightly attached to the position of a patient to be operated, and the guiding part 1 can rotate at any angle by taking the first kirschner wire 5 as a rotating shaft.

And then the angle of the guide part 1 is adjusted to ensure that the saw blade guide groove 3 corresponds to the preset truncation plane. Then, according to the preset cutting length, a drop pin through hole 4 with a proper distance is selected, a second kirschner wire 5 is inserted into the drop pin through hole 4, and the end part of the second kirschner wire 5 needs to be inserted into the bone to position the saw blade guide groove 3. The second k-wire 5 is secured in the same plane as the first k-wire 5.

Subsequently, as shown in fig. 4, the saw blade 6 is inserted into the blade guide groove 3 from the back surface 9 of the guide portion 1, and a cutting operation is performed between the two kirschner wires 5. By means of the guide, it is ensured that the saw blade 6 lies in the same plane as the kirschner wire 5, so that the osteotomy direction is along the osteotomy plane.

After the above-mentioned "cutting operation using two kirschner wires for positioning" is completed, the next cutting operation can be continuously performed. The next cutting operation takes "cutting operation using one kirschner wire for positioning" as an example:

firstly, the first kirschner wire 5 is pulled out, and the osteotomy guide rotates a certain angle by taking the second kirschner wire 5 as a rotating shaft, so that the saw blade guide groove 3 corresponds to a preset truncation plane. The saw blade guide groove 3 and the kirschner wire 5 can be ensured to be positioned on the same plane, so that the osteotomy direction is along the osteotomy plane.

The guide 1 is then positioned relative to the site to be operated on (e.g., the handpiece 2 may be grasped to prevent rotation of the osteotomy guide) in conjunction with external forces.

As shown in fig. 3, the saw blade 6 is inserted into the blade guide groove 3 from the back surface 9 of the guide portion 1, and a cutting operation is performed with the second kirschner wire 5 as one end portion in order to ensure continuity between adjacent cutting surfaces.

Finally, the osteotomy guide is removed and the second k-wire 5 is extracted.

In a specific one-time osteotomy, multiple osteotomy operations may be involved, and are not described herein.

Other embodiments and structural changes of the present invention are described below as follows:

1. in the above embodiment, both ends of the saw blade guide groove in the longitudinal direction thereof are closed. However, the structure of the saw blade guide slot of the present invention is not limited thereto. The saw blade guide groove may have a structure in which one end in the length direction thereof is closed and the other end penetrates one end surface of the guide portion. As would be readily understood and accepted by those skilled in the art.

2. In the above embodiment, the distance between two adjacent needle falling through holes is 5mm or 10 mm. However, the present invention is not limited thereto. This spacing is primarily related to the clinical precision requirements of the particular procedure, the smoothness of the truncated surface, and the simplicity of the guide structure, and other spacing arrangements, such as two adjacent needle through holes having a hole spacing greater than or equal to 2 millimeters, etc., should also fall within the scope of the present invention, as will be readily understood and accepted by those skilled in the art.

3. In the above embodiment, the guide portion is substantially a rectangular parallelepiped, but the shape of the guide portion in the present invention is not limited thereto. As long as it is a block-shaped body having two oppositely disposed surfaces thereon, as will be readily understood and accepted by those skilled in the art.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. An osteotomy guide for ankle surgery, comprising: the device comprises a handheld part (2) and a blocky guide part (1), wherein one end of the handheld part (2) is fixedly connected with one end of the guide part (1);

the guide part (1) is provided with a front surface (8) and a back surface (9), and the front surface (8) is provided with a saw blade guide groove (3) and a plurality of needle falling through holes (4) for the penetration of Kirschner wires (5); the saw blade guide groove (3) penetrates through the front surface (8) of the guide part (1) to the back surface (9) of the guide part (1) along a straight line in the depth direction of the saw blade guide groove; the needle falling through holes (4) are arranged in a clearance mode, hole shafts of the needle falling through holes are located on the central line of the saw blade guide groove (3) in the length direction, and the diameter of the needle falling through holes (4) is larger than the groove width of the saw blade guide groove (3).

2. The ankle apparatus according to claim 1, wherein: the hole spacing between two adjacent needle falling through holes (4) is greater than or equal to 2 mm.

3. The ankle apparatus according to claim 2, wherein: the hole spacing of two adjacent needle falling through holes (4) is 5 mm.

4. The ankle apparatus according to claim 1, wherein: one end of the saw blade guide groove (3) in the length direction penetrates through the end face of one side of the guide part (1).

5. The ankle apparatus according to claim 1, wherein: two ends of the saw blade guide groove (3) in the length direction are respectively provided with a needle falling through hole (4).

6. The ankle apparatus according to claim 1, wherein: the width of the saw blade guide groove (3) ranges from 0.5 mm to 0.7 mm.

7. The ankle apparatus according to claim 6, wherein: the aperture range of the needle falling through hole (4) is 1.5mm to 1.7 mm.

8. The ankle apparatus according to claim 1, wherein: knurling is arranged on the surface of the handheld portion (2).

9. An osteotomy assembly for ankle surgery, comprising: comprising an ankle-surgery osteotomy guide according to anyone of claims 1 to 8, and a plurality of kirschner wires (5) and a saw blade (6) adapted to the osteotomy guide.

10. The ankle surgical osteotomy assembly of claim 9, wherein: the diameter of the Kirschner wire (5) is 1.5 mm; the thickness of the saw blade (6) is 0.5 mm, and the width thereof is 5 mm.