CN217244641U

CN217244641U - Orthopedic first metatarsal distal end of hallux valgus cuts bone director

Info

Publication number: CN217244641U
Application number: CN202220075596.1U
Authority: CN
Inventors: 郭亮; 吴学军; 林世备; 黄顺毅; 王志伟
Original assignee: Fuzhou Second Hospital
Current assignee: Fuzhou Second Hospital
Priority date: 2022-01-12
Filing date: 2022-01-12
Publication date: 2022-08-23
Anticipated expiration: 2032-01-12

Abstract

The utility model belongs to the technical field of orthopedic operation auxiliary equipment, a hallux valgus orthopedic first metatarsal distal end osteotomy guider is related to, including handle and director body. The guider is utilized, a serrated opening at the distal end of the guider can be firmly attached to the inner side bone surface of the distal end of the first metatarsal, periosteum blocks and can be spread, stimulation to the periosteum is reduced, uniform punching is only needed along the Kirschner wire guider in the operation, the last Kirschner wire is reserved and fixed on the distal metatarsal after full punching, the hallux valgus correcting first metatarsal distal end osteotomy guider is rotated to the back side along the Kirschner wire by 180 degrees and uniformly punched again, a bone part connected between the Kirschner wire holes is chiseled by a small bone knife, the metatarsal distal end osteotomy can be completed, and the guide is utilized to reduce the shaking of the Kirschner wire, and the uniform distribution of the Kirschner wire osteotomy holes is ensured.

Description

Hallux valgus orthopedic first metatarsal distal end osteotomy guider

Technical Field

The utility model belongs to the technical field of orthopedic operation auxiliary equipment, concretely relates to first metatarsal distal end osteotomy director of hallux valgus orthopedics.

Background

Hallux valgus, commonly known as 'big foot bone', belongs to the most common disease of ankle surgery, and refers to forefoot deformity in which the first metatarsophalangeal joint of hallux toes deflects outwards beyond the normal physiological range. But not a single disease but a series of syndromes. Hallux valgus is the most common forefoot deformity with a prevalence rate as high as 23%. When the deformity exceeds a physiological normal angle, the deformity is difficult to self-heal once formed, bursitis is often formed at the convex part at the inner side of the first metatarsophalangeal joint, the life of a patient is influenced, and the patient mostly needs surgical treatment, so that the clinical surgical methods for treating hallux valgus mainly comprise 4 types of soft tissue correction, arthroplasty, osteotomy correction and joint fusion, wherein the osteotomy correction comprises 3 types of first metatarsal distal osteotomy, first metatarsal dry osteotomy and first metatarsal proximal osteotomy.

There are over 200 types of hallux valgus orthodontics, and the first metatarsal distal osteotomy is most commonly used in all hallux valgus correction techniques. One of the main features of this type of procedure is the relaxation of the contracture soft tissue spanning the first metatarsal head, neck and metatarsophalangeal joint. Osteotomies effectively reduce the volume of space within the metatarsal head joint capsule, thereby eliminating soft tissue contracture outside the metatarsal heads. The distal osteotomy can also control the position of the metatarsal heads, and has a good correction effect on the severe hallux valgus deformity. At present, hallux valgus deformity is corrected by aiming at the first metatarsal distal end osteotomy with a small incision which is more popular in China. The use of small incisions in orthopaedics for feet began in the end of the 20 th century 70 s of the united states, but the osteotomy procedure was a 1 st metatarsal head and neck "V" shaped osteotomy. The method is easy to cause instability of the distal metatarsal osteotomy block in the practical application of a small incision, and the treatment effect is influenced. Has rarely been used clinically since its introduction into China in 1983. In 1993, Wen Jian et al organically combine the small incision minimally invasive technology and the traditional Chinese medicine bonesetting manipulation on the basis of summarizing the experience of hallux valgus treatment at home and abroad, and establish the small incision manipulation for treating the hallux valgus.

The small-incision first metatarsal distal osteotomy is to design a transverse incision about lcm to reach the metatarsal on the inner side of the first metatarsophalangeal joint and under the metatarsal heads, and a first metatarsal distal osteotomy line is designed according to the inversion angle of the first metatarsal, wherein the inversion is more serious, and the osteotomy line is farther away from the metatarsal heads. Performing transverse osteotomy at the distal metatarsal end design line, pushing the distal bone end outwards for a distance of about one to two cortical bones, pushing the metatarsal heads to shift about one cortical bone toward the metatarsal side, so as to counteract the possibility of metastatic metatarsal pain caused by first metatarsal shortening; the hallux valgus deformity can be completely corrected. At present, the swing saw is used for cutting bones clinically, and the surgical formula has the following defects: 1. when the saw is used for cutting bones, the saw generates larger heat, so that the blood circulation damage of the cut bones is large, and delayed healing or bone nonunion of the bones is easy to cause. 2. When the swing saw is used, the quantity of the bones at the osteotomy end is greatly lost due to the swinging of the saw blade, and metatarsal shortening is easily caused. 3. After the swing saw cuts the bone, the bone cutting surface is relatively flat, and after the far-end bone fracture end is pushed outwards, the friction force is small, and the stability is poor. 4. When the oscillating saw is used, the adjacent vascular nerve is easily damaged by pushing too deep, so that a kirschner wire osteotomy method is adopted when the hallux valgus is treated in a minimally invasive manner. However, when the kirschner wire is used for osteotomy, the kirschner wire has advantages over a swing saw, and has the advantages of small heat injury, less bone loss, rough osteotomy surface and the like. However, when the osteotomy is performed, the defects that the osteotomy hole positions on the inner side and the dorsal side are not on the same plane due to lack of guidance, manual operation and difficult positioning are caused, the osteotomy line is easy to deflect and the like, the osteotomy direction cannot be accurately controlled, and the injury of vascular nerves is easy to cause.

SUMMERY OF THE UTILITY MODEL

To solve the problems raised in the background art described above. The utility model provides a first metatarsal distal end osteotomy director of hallux valgus correction, it has solved that the heat damage is big, and the bone mass is lost much, the poor stability of osteotomy face, the fragile technical problem who injures the angioneurotic.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a hallux valgus orthopedic first metatarsal distal end osteotomy director, includes handle and director body, and the handle is 90 degrees fixed connection with the director body, the handle is the wave form, the director body includes the arc body, cavity body chamber, distal end dentate mouth and periosteum blocking device.

As a further aspect of the present invention: the utility model discloses a director body, including director body, arc body, direction passageway and every, the director body near-end is the arc body, the arc body is the quarter circular arc, the direction passageway has been seted up to the arc body centre, the quantity of direction passageway is a plurality of, and is a plurality of direction passageway align to grid, the equal directional centre of a circle of the arc body of direction passageway, every the other corresponding digital mark that is provided with of direction passageway.

As a further aspect of the present invention: the diameter of the guide channel is 1.6 mm, and the depth of the guide channel is 5 mm.

As a further aspect of the present invention: the interior of the hollow body cavity is hollow.

As a further aspect of the present invention: the far-end toothed opening is a quarter of circular arc, the arc length of the far-end toothed opening is 8 mm, and the far-end toothed openings are distributed in a zigzag manner.

As a further aspect of the present invention: the periosteum blocking device is located on two sides of the arc of the distal dentate orifice, and the arc length of the periosteum blocking device is 0.5 mm.

As a further aspect of the present invention: the handle and the guider body are made of stainless steel materials.

Compared with the prior art, the beneficial effects of the utility model are that:

the guider is utilized, the sawtooth-shaped opening at the far end of the guider can be firmly clung to the inner bone surface of the far end of the first metatarsal, the periosteum can be propped open by blocking, the stimulation to the periosteum is reduced, the last Kirschner wire is reserved to be fixed on the far-end metatarsal after the guider is fully drilled, the hallux valgus orthopedic first metatarsal far-end osteotomy guider is rotated to the back side along the Kirschner wire for 180 degrees to be drilled uniformly again, the bone connected between the Kirschner wire holes is chiseled by a small bone knife to complete the metatarsal far-end osteotomy, the hallux valgus orthopedic first metatarsal far-end osteotomy guider is utilized to reduce the shaking of the Kirschner wire, the uniform distribution of the Kirschner wire osteotomy holes is ensured, the loss of bone mass is reduced, and the injury of vascular nerves can be avoided by the guider, the irritation to peripheral soft tissues can be reduced, the incidence rate of metatarsal head necrosis and nonunion of osteotomy ends can be reduced, the guide device can be used for more accurately osteotomy, the osteotomy line is ensured to be on the same plane, and the direction of the osteotomy line can be more favorably adjusted.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a schematic three-dimensional structure of the present invention;

fig. 2 is another three-dimensional schematic structural diagram of the present invention;

fig. 3 is a schematic structural view of the present invention from the top;

FIG. 4 is a side view of the present invention;

in the figure: 1. a handle; 2. a guider body; 21. a circular arc body; 211. a guide channel; 212. a numerical label; 22. a hollow body cavity; 23. a distal toothed orifice; 24. a periosteal barrier device.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-4, the present invention provides the following technical solutions: the utility model provides a first metatarsal distal end osteotomy director of hallux valgus orthopedics, includes handle 1 and director body 2, and handle 1 is 90 degrees fixed connection with director body 2, and handle 1 is the wave form, and director body 2 includes the arc body 21, cavity body 22, distal end dentate orifice 23 and periosteum blocking device 24.

Specifically, 2 near-ends of director body are arc body 21, arc body 21 is the quarter circular arc, direction passageway 211 has been seted up in the centre of the arc body 21, the quantity of direction passageway 211 is a plurality of, a plurality of direction passageway 211 align to grid, the equal directional arc body 21's of a circle centre of direction passageway 211, when cutting the bone, the equal same round point that can point to of kirschner wire through every direction passageway 211 reduces the damage, every direction passageway 211 is other to be provided with corresponding digital mark 212, when cutting the bone, can evenly select the hole site to carry out the needle insertion.

Specifically, the diameter of the guide channel 211 is 1.6 mm, the depth is 5mm, a 1.5mm kirschner wire is selected for cutting bones, the stability and the guidance performance of the kirschner wire during threading are ensured, the hollow body cavity 22 is hollow, the kirschner wire enters the hollow body cavity 22 after passing through the guide channel 211 and can smoothly pass through the hollow body cavity, blocking cannot occur, and the bone cutting can be smoothly completed.

Specifically, the distal toothed opening 23 is a quarter arc, and is concentric with the proximal arc body 21 of the guider body 2, the arc length of the distal toothed opening 23 is 8 mm, so that the bone can be successfully cut under the small incision of the distal end of the first metatarsal bone, the distal toothed opening 23 is distributed in a zigzag manner, and can be tightly combined with the first metatarsal bone, the sliding of the osteotomy guider is not easily caused, the periosteum blocking device 24 is positioned at two sides of the arc shape of the distal toothed opening 23, the arc length of the periosteum blocking device 24 is 0.5 mm, so that the periosteum of the distal end of the first metatarsal bone can be spread, the damage of the periosteum is avoided when the bone is cut, and the handle 1 and the guider body 2 are made of stainless steel materials.

The utility model discloses a theory of operation does:

when the device is used, a transverse incision about lcm is designed on the inner side of the first metatarsophalangeal joint and below the metatarsal heads to reach the metatarsal bones, and periosteum is stripped; the handle 1 is held by hand, the toothed mouth 23 at the far end of the guider is tightly attached to the metatarsal bones in parallel with the first metatarsal bones, and the periosteum blocking device 24 is inserted under the periosteum to open the periosteum; adjusting the direction of the guider according to the osteotomy line direction designed before the operation; 1.5mm Kirschner wires are selected to be inserted along the guide channel 211 marked with even marks, and penetrate through the opposite cortex after passing through the hollow body cavity 22, so as to uniformly punch holes one by one; after penetrating the guide channel 211 of the last even number mark position, loosening the electric drill and keeping the Kirschner wire on the metatarsal; pulling the incision skin to the dorsolateral side by using the elasticity of the incision skin, rotating the guider to the dorsal side of the metatarsal bone around the Kirschner wire for 180 degrees, and uniformly perforating by the same method; then the metatarsal heads are broken off, if the metatarsal heads cannot be broken off, a small amount of connected cortical bone can be chiseled out by a small bone knife, and the bone cutting is successfully completed.

While embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that modifications, alterations, substitutions and variations may be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. The utility model provides a first metatarsal distal end osteotomy director of hallux valgus orthopedics, includes handle (1) and director body (2), its characterized in that: handle (1) is 90 degrees fixed connection with director body (2), handle (1) is the wave form, director body (2) are including arc body (21), cavity body chamber (22), distal end dentate mouth (23) and periosteum blocking device (24).

2. The hallux valgus orthopedic first metatarsal distal osteotomy guide of claim 1, wherein: the near-end of director body (2) is the arc body (21), the arc body (21) is the quarter circular arc, direction passageway (211) have been seted up to the arc body (21) centre, the quantity of direction passageway (211) is a plurality of, and is a plurality of direction passageway (211) align to grid, the centre of a circle of direction passageway (211) all points to the arc body (21), every other corresponding digital mark (212) that is provided with of direction passageway (211).

3. The hallux valgus orthopedic first metatarsal distal osteotomy guide of claim 2, wherein: the diameter of the guide channel (211) is 1.6 mm, and the depth is 5 mm.

4. The hallux valgus orthopedic first metatarsal distal osteotomy guide of claim 1, wherein: the interior of the hollow body cavity (22) is hollow.

5. The hallux valgus orthopedic first metatarsal distal osteotomy guide of claim 1, wherein: the far-end toothed opening (23) is a quarter of circular arc, the arc length of the far-end toothed opening (23) is 8 mm, and the far-end toothed opening (23) is distributed in a sawtooth shape.

6. The hallux valgus orthopedic first metatarsal distal osteotomy guide of claim 1, wherein: the periosteum blocking device (24) is located on two arc sides of the far-end toothed opening (23), and the arc length of the periosteum blocking device (24) is 0.5 mm.

7. The hallux valgus orthopedic first metatarsal distal osteotomy guide of claim 1, wherein: the handle (1) and the guider body (2) are made of stainless steel materials.