阅读说明：本技术 一种截骨器 (Bone cutter ) 是由 唐举玉 庞晓阳 吴攀峰 潘丁 祝自君 戴隆理 于 2019-09-24 设计创作，主要内容包括：本发明公开了一种截骨器,包括手持部分和锯片,所述锯片固定连接于手持部分的顶部前端,还包括连接于手持部分上的环抱装置,所述环抱装置设有沿周向围设于待截断骨的外围的环抱部,所述环抱部内设有连通待截断骨和锯片的通道,所述通道沿待截断骨径向布设。本发明的截骨器具有结构简单、操作稳定、截骨效果好和不会造成截骨不全等优点。(The invention discloses a bone cutter which comprises a handheld part and a saw blade, wherein the saw blade is fixedly connected to the front end of the top of the handheld part, the bone cutter also comprises an encircling device connected to the handheld part, the encircling device is provided with an encircling part circumferentially encircling the periphery of a bone to be cut, a channel for communicating the bone to be cut and the saw blade is arranged in the encircling part, and the channel is radially distributed along the bone to be cut. The osteotome has the advantages of simple structure, stable operation, good osteotomy effect, no incomplete osteotomy, and the like.)

1. An osteotome, comprising a hand-held portion (1) and a saw blade (2), said saw blade (2) being fixedly connected to a top front end of the hand-held portion (1), characterized in that: still including connecting in embracing device (3) on handheld part (1), embracing device (3) and being equipped with along circumference enclose locate the peripheral portion of embracing (31) of waiting to cut the bone, it waits to cut passageway (311) of bone and saw bit (2) to be equipped with the intercommunication in portion of embracing (31), passageway (311) are along waiting to cut the radial laying of bone.

2. The osteotome defined in claim 1 wherein: a limiting plate (312) which is perpendicular to the channel (311) and is arranged in the channel (311) of the encircling part (31) is arranged, a through hole allowing the saw blade (2) to pass through is formed in the limiting plate (312), and the height of the through hole is 1.2-2 times of the thickness of the saw blade (2).

3. The osteotome defined in claim 2 wherein: the encircling part (31) comprises two encircling parts (313), the middle parts of the two encircling parts (313) are hinged and connected, the end parts of the two encircling parts are provided with inwards concave arc-shaped buckling ends, the buckling ends can be buckled on the periphery of a bone to be cut off by rotating around a hinge point, and the channel (311) is arranged between the buckling ends and the hinge point.

4. The osteotome defined in claim 3 wherein: the inner side surfaces of the two surrounding pieces (313) are provided with limiting pieces, and the two surrounding pieces (313) are buckled to enable the limiting pieces to be in butt joint to form the limiting plates (312).

5. The osteotome defined in claim 3 wherein: the encircling part (31) is provided with an elastic element which is propped between the two encircling elements (313) at the other end of the buckling end opposite to the hinge point/is provided with an elastic element which is pulled and connected between the two encircling elements (313) at the same side of the buckling end opposite to the hinge point.

6. The osteotome defined in claim 2 wherein: the embracing device (3) further comprises a connecting part (32), and the embracing device (3) is connected with the handheld part (1) in a sliding fit manner along the direction of the channel (311) through the connecting part (32).

7. The osteotome defined in claim 6 wherein: the connecting part (32) is a sliding block arranged on the encircling device (3), and the handheld part (1) is provided with a slide way (11) which is matched with the connecting part (32) and is arranged along the direction of the channel (311).

8. The osteotome defined in claim 6 wherein: the saw blade (2) is provided with limiting blocks (21) on two sides of the connecting end of the saw blade and the handheld part (1), and the distance between the outer side surfaces of the two limiting blocks (21) is larger than the width of the through hole of the limiting plate (312); when the end part of the saw blade (2) slides along the channel (311) to reach the inner side surface of the surrounding part (31), the limiting block (21) props against the plate surface of the limiting plate (312).

9. The osteotome defined in claim 1 wherein: the outline of the end part of the saw blade (2) is the same as the shape of the inner side surface of the surrounding part (31).

Technical Field

The invention relates to the field of medical instruments, in particular to an osteotome.

Background

The first mode is that the force is not well controlled when the bone is cut by an electric drill and a osteotome, the second mode is that a swing saw is used for cutting the bone, the first mode has the defects that the force is not well controlled when the bone is cut and the hole is drilled by ①, a ② osteotome is not flat in a bone cutting plane, an osteotomy section is split in ③ operation, the possibility of damaging nerves and blood vessels exists in ④ operation, limb necrosis occurs after operation, and lower limb sense or function is obstructed.

In addition, the osteotomy device has a problem of osteotomy depth, because only a limited part of the front side of the bone to be cut is exposed in the visual field of the operator during the osteotomy process, and the back side of the bone cannot be exposed, which easily causes the problem that the bone cannot be completely cut, and other tools such as a bone knife are needed to further cut the bone during the osteotomy process, so that the back side of the bone is not completely cut, and the fracture is generated.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the osteotomy device which has the advantages of simple structure, stable operation, good osteotomy effect and no incomplete osteotomy.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

the utility model provides a cut bone ware, includes handheld part and saw bit, saw bit fixed connection still embraces the device including connecting in handheld part in the top front end of handheld part, it is equipped with along the peripheral portion of embracing of enclosing of locating the bone of waiting to cut to embrace the device, it waits to cut the passageway of bone and saw bit to be equipped with the intercommunication in the portion of embracing, the passageway is along waiting to cut the radial laying of bone.

As a further improvement of the above technical solution:

the saw blade clamping device is characterized in that a limiting plate which is perpendicular to the channel and arranged is arranged in the channel of the encircling part, a through hole allowing a saw blade to pass through is formed in the limiting plate, and the height of the through hole is 1.2-2 times of the thickness of the saw blade.

The encircling part comprises two encircling parts, the middle parts of the two encircling parts are hinged and connected, the end parts of the two encircling parts are provided with inwards concave arc-shaped buckling ends, the buckling ends rotate around hinge points and can be buckled on the periphery of a bone to be cut, and the channel is arranged between the buckling ends and the hinge points.

And the inner side surfaces of the two surrounding pieces are provided with limiting pieces, and the two surrounding pieces are buckled to enable the limiting pieces to be butted to form the limiting plate.

The encircling part is provided with an elastic part which is propped between the two encircling parts at the other end of the buckling end relative to the hinge point or is provided with an elastic part which is pulled and connected between the two encircling parts at the same side of the buckling end relative to the hinge point.

The encircling device further comprises a connecting part, and the encircling device is connected with the handheld part in a sliding fit mode along the channel direction through the connecting part.

The connecting part is a sliding block arranged on the encircling device, and the handheld part is provided with a slideway which is matched with the connecting part and is arranged along the channel direction.

The saw blade is provided with limiting blocks on two sides of the connecting end of the saw blade and the handheld part, and the distance between the outer side surfaces of the two limiting blocks is larger than the width of the through hole of the limiting plate; when the end part of the saw blade slides along the channel to reach the inner side surface of the surrounding part, the limiting block abuts against the plate surface of the limiting plate.

The profile of the end part of the saw blade is the same as the shape of the inner side surface of the surrounding part.

Compared with the prior art, the invention has the advantages that:

the invention provides a bone cutter which comprises a handheld part and a saw blade, wherein the handheld part and the saw blade are both arranged in the existing bone cutter, the handheld part is connected with an encircling device, the encircling device is provided with an encircling part which is circumferentially arranged around the periphery of a bone to be cut, a channel for communicating the bone to be cut and the saw blade is arranged in the encircling part, and the channel is radially arranged along the bone to be cut, namely, the bone to be cut and the saw blade are encircled in the same internal area. When the osteotomy is carried out, the encircling part is arranged around the periphery of the bone to be osteotomy in an encircling way, the saw blade can only cut the bone in the encircling part, and the moving area is limited, so the operation process is more stable, and the osteotomy effect is optimized; and the saw blade is limited in longitudinal displacement and transverse displacement, so that the probability of damage to soft tissues, blood vessels and nerves around the bone is greatly reduced, and the injury of the operator and an assistant caused by the lack of grip strength of the operator is avoided.

Drawings

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

FIG. 2 is a schematic view showing a coupling structure of a hand-held portion and a saw blade in the osteotome of the present invention;

FIG. 3 is a front view of the embracing means in the osteotome of the present invention;

FIG. 4 is a schematic top view of the embracing means in the osteotome of the present invention;

FIG. 5 is a schematic perspective view of the embracing means in the osteotome of the present invention;

figure 6 is a schematic view of the connection between the embracing means and the hand-held portion in the osteotomy instrument of the present invention.

Illustration of the drawings: 1. a hand-held portion; 11. a slideway; 2. a saw blade; 21. a limiting block; 3. an encircling device; 31. an encircling part; 311. a channel; 312. a limiting plate; 313. an encircling member; 32. a connecting portion.

Detailed Description

In order to facilitate an understanding of the invention, the invention will be described more fully and in detail below with reference to the accompanying drawings and preferred embodiments, but the scope of the invention is not limited to the specific embodiments below.