CN215688233U

CN215688233U - Bone cutting instrument

Info

Publication number: CN215688233U
Application number: CN202121888158.9U
Authority: CN
Inventors: 张荣凯; 郭一伟
Original assignee: Guangzhou Minyi Medical Technology Development Co ltd
Current assignee: Guangzhou Minyi Medical Technology Development Co ltd
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2022-02-01
Anticipated expiration: 2031-08-12

Abstract

The utility model discloses an osteotomy instrument, comprising: the positioning device comprises a mounting belt, a positioning block and a pointing strip, wherein a mounting structure is arranged on the mounting belt, and the positioning block is arranged between the mounting belt and the pointing strip and internally provided with a through hole; the protector is connected with the positioner through the mounting structure, and a blocking piece is arranged on the protector, is in a bent plate shape and is used for blocking a drill bit; the guiding device is internally provided with a plurality of penetrating guiding holes, one part of the guiding holes guides the Kirschner wire to the affected part, and the rest part guides the drill bit to the affected part. In the utility model, when in operation, the skeleton and the human soft tissue can be separated, the soft tissue is protected from accidental injury during the operation, the drill bit and the Kirschner wire can be arranged at the same time, the moving range of the drill bit is limited, misoperation is prevented, and the universality is strong.

Description

Bone cutting instrument

Technical Field

The utility model relates to the field of medical instruments, in particular to an osteotomy instrument.

Background

The bone cutting treatment of the bone surgery comprises the following modes: the electric swing saw is a commonly used bone cutting tool, the head of a bone cutting blade is a sawtooth, the blade is sharp and large in swing, the blade is not easy to control when being held by two hands, other tissues near the bone cutting position are easy to hurt when the bone is cut, and body fluid or blood of a patient is easy to splash; the ultrasonic osteotome is safe and easy to operate, but is expensive and has no popularity; the saw blade is manually operated, a large wound needs to penetrate through the saw blade, the bone cutting is labor-consuming, the operation is not easy, and tissues near the wound are easy to hurt.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one of the above technical problems, the present invention provides an osteotomy instrument, which adopts the following technical scheme:

the osteotomy instrument provided by the utility model comprises a positioner, wherein the positioner comprises a mounting belt, a positioning block and a pointing strip, the mounting belt is provided with a mounting structure, the positioning block is arranged between the mounting belt and the pointing strip, and a through hole is formed in the positioning block; the protector is connected with the positioner through the mounting structure, and a blocking piece is arranged on the protector, is in a bent plate shape and is used for blocking a drill bit; the guiding device is internally provided with a plurality of penetrating guiding holes, one part of the guiding holes guides the Kirschner wire to the affected part, and the rest part guides the drill bit to the affected part.

In some embodiments of the utility model, the protector further comprises a handle, and the blocking piece is disposed on the handle.

In some embodiments of the utility model, the upper part of the through hole is provided with a positioning groove which penetrates through the through hole from left to right; the through hole and the positioning groove can be internally provided with a guider or a osteotome corresponding to the width of the through hole.

In some embodiments of the present invention, the through hole corresponds to the shape of the guide, thereby facilitating installation.

In some embodiments of the utility model, two sides of the outside of the positioning block are provided with raised cylinders corresponding to the positioning grooves, and the raised cylinders are used for installing the guide on the positioner.

In some embodiments of the utility model, the positioner, the protector and the guide are removably connected.

In some embodiments of the utility model, the handle is provided with an installation groove, the installation groove is arranged along the length direction of the handle, the installation belt is inserted into the installation groove and slides in the installation groove to adjust the position, and the installation belt is fixedly connected after the position is adjusted.

In some embodiments of the utility model, the protector further comprises a locking member for locking the connection of the retainer and the protector.

In some embodiments of the present invention, the handle is provided with a locking hole, the locking hole is arranged on the bottom surface of the mounting groove far away from the handle, and the locking component penetrates through the mounting structure of the positioner mounting belt and is connected in the locking hole.

In some embodiments of the utility model, the guide hole is directed toward the blocking piece when the retainer and the guide are installed.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a perspective view of the osteotomy instrument of the present invention;

FIG. 2 is an exploded view of the osteotomy instrument of the present invention;

FIG. 3 is a perspective view of a guide in the osteotomy instrument of the present invention;

FIG. 4 is a cross-sectional view of a guide in the osteotomy instrument of the present invention;

FIG. 5 is a perspective view of a positioner in the osteotomy instrument of the present invention;

FIG. 6 is a cross-sectional view of a positioner in the osteotomy instrument of the present invention;

figure 7 is a perspective view of a protector in the osteotomy instrument of the present invention.

Reference numerals: 1. a positioner; 2. a protector; 3. a locking member; 4. a guide; 101. mounting a belt; 102. positioning blocks; 103. positioning a groove; 104. a pointing bar; 105. a through structure; 201. a blocking sheet; 202. a locking hole; 203. mounting grooves; 401. a guide hole; 402. and (5) an outer cylinder.

Detailed Description

This section will describe in detail embodiments of the utility model, examples of which are illustrated in the accompanying drawings, in conjunction with fig. 1 to 7, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that if the terms "center", "middle", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., are used in an orientation or positional relationship indicated based on the drawings, it is merely for convenience of description and simplicity of description, and it is not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore, is not to be considered as limiting the present invention. The features defined as "first" and "second" are used to distinguish feature names rather than having a special meaning, and further, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment of the utility model provides an osteotomy instrument, which comprises a protector 2, a positioner 1 and a guider 4, wherein a blocking sheet 201 is arranged on the protector 2, the blocking sheet 201 can separate bones of an affected part of a patient from other human tissues, and a drill bit is blocked by the blocking sheet 201 after penetrating through the bones during an operation and cannot further invade a human body; locator 1 is including installation area 101, locating piece 102, constant head tank 103 and directional strip 104, and the locating piece is used for installing director 4, sets up guiding hole 401 on the director 4, because drill bit and kirschner wire all need reach the affected part through guide structure, consequently, guiding hole 401 sets up a plurality ofly, and the affected part is aimed at to the drill bit of being convenient for and kirschner wire, and guide structure still is used for injecing the home range of drill bit, further protects human tissue. One end of the positioner 1 is a mounting belt 101, a mounting structure is arranged on the mounting belt 101, the mounting structure is conveniently mounted on the protector 2, the other end of the positioner is a pointing bar 104, and the pointing bar 104 points to a characteristic point of an operation, so that the positioner can be conveniently positioned in the operation. Specifically, the mounting structure may be an elongated hole, or may be a plurality of mounting holes.

The inside structure 105 that runs through that is of locating piece 102, run through structure 105 and be used for installing director 4, perhaps directly be used for restricting the home range with the osteotomy that the through-hole width is corresponding, detachable connections between locator 1 and the director 4, constant head tank 103 cooperatees with the positioning device on the director 4, and constant head tank 103 bottom is the arc, and the director 4 installation back of being convenient for is rotatory.

Specifically, the mounting strap 101 and the pointing stick 104 may be provided as separate structures, and then fixedly connected to both ends of the positioning block 102. Alternatively, the mounting band 101 and the direction bar 104 are integrally formed, and a mounting portion is left in the middle, the mounting portion is fixedly mounted with the positioning block 102, and the mounting portion includes a hole having a cross section identical to that of the positioning block 102.

Guider 4 is used for setting up drill bit and kirschner wire, sets up guiding hole 401 in guider 4 as guide structure, and after locator 1 was installed to guider 4, patient affected part was aimed at to guiding hole 401, guarantees that kirschner wire and drill bit can pass through, performs the operation.

The plurality of guide holes 401 are provided along the handle width direction, and the pitch of the guide holes 401 may be the same or may be set as necessary. The arrangement of the plurality of guide holes 401 enables the drill bit and the Kirschner wire to respectively reach the affected part, and is convenient for aligning the guide holes 401 with the affected part. During operation, two Kirschner wires are driven into any two guide holes 401 to position the positioner 1, and then the surgical instrument drills and cuts bones through other guide holes 401.

Specifically, the guider 4 and the positioner 1 are of a separated structure, the main body of the guider 4 is installed in a penetrating structure 105 of the positioner, cylinders 402 on two sides of the guider are used as positioning equipment, slide in along a positioning groove 103 and are used as a rotation center, after the guider 1 rotates for an angle, a Kirschner wire is driven into a guide hole 401 on the edge, after the Kirschner wire is ensured not to penetrate through a blocking piece 201, the rest of the Kirschner wires and the drill bit are continuously driven, and after the angle is changed, the other Kirschner wires and the drill bit are driven in the same mode; after all the Kirschner wires and the drill bits are drilled, a plurality of groups of crossed through holes are arranged on the osteotomy surface, the guider 4 is taken out, the osteotomy knife is inserted into the through hole of the positioner, and the osteotomy can be safely and easily completed by lightly knocking.

Protector 2 is including blockking piece 201 and handle, and the handle is used for gripping to, the handle front end has mounting groove 203, and mounting groove 203 sets up along handle length direction, detachable connections between locator 1 and protector 2, and installation area 101 inserts mounting groove 203 and slide adjusting in the mounting groove, carries out fixed connection after adjusting the position.

The mounting groove 203 is used for mounting the positioner 1 on the protector 2, the shape of the mounting groove 203 is the same as or corresponds to the cross-sectional shape of the mounting band 101, the mounting band 103 of the positioner 1 is inserted into the mounting groove 203, the connection between the protector 2 and the positioner 1 is completed, the insertion depth of the positioner 1 relative to the protector 2 in the length direction of the handle is adjustable due to the fact that the insertion depth of the mounting band 101 is controllable, and the positioner 1 is connected with the affected part by manually adjusting the insertion depth of the mounting band 101 according to actual operation conditions. Keep away from the one end of handle in mounting groove 203 and set up locking hole 202 for protector 2 and locator 1 are guaranteed that mounting band 101 can only be adjusted at mounting structure's within range, can not break away from protector 2, and specifically, locking hole 202 can be for screw hole etc..

The osteotomy instrument further comprises a locking component 3, wherein the locking component 3 is used for being matched with the locking hole 202, the locking component 3 is arranged on the protector 2 and used for fixing the protector 2 and the positioner 1, the locking component 3 penetrates through the mounting structure and is inserted into the locking hole 202, and the protector 2 and the positioner 1 are locked to complete installation. Specifically, the locking member 3 may be a bolt, a screw, or the like.

Locator 1, protector 2 adopt detachable connections, insert the incision of skin with the locating piece 102 of locator 1 earlier during the use, hug closely the skeleton, the mounting band exposes outside the skin with directional strip, the stopper piece 201 of protector 2 inserts the gap between the contralateral skeleton of locator 1 and the tissue, hug closely the skeleton, the main part of adjustment locator 1 and protector 2 is close parallelly to, and adjust the relative position of locator 1 and protector 2, install locator 1 on protector 2 again.

The blocking piece 201 is fixedly arranged on the handle, the blocking piece 201 is adhered to the surface of a bone to enter the human body when in operation, the blocking piece 201 is bent for multiple times and is close to and inosculated with the bone, the blocking piece 201 isolates soft tissues such as the bone, blood vessels and nerves, tissues of non-affected parts are protected, injuries brought by misoperation are prevented, the blocking piece 201 is in a bent plate shape, the space between the blocking piece 201 and the positioning block 102 is an operation space, each guide hole 401 is opposite to the blocking piece 201 in the use process, when the surgical instrument penetrates through the bone along one guide hole 401, the surgical instrument can contact the blocking piece 401 and is blocked by the blocking piece 401. The barrier 401 may be provided in a variety of lengths, widths, and different shapes.

In the description herein, references to the terms "one embodiment," "some examples," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" or the like, if any, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While the embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. An osteotomy instrument, comprising: the method comprises the following steps:

the positioning device comprises a positioning device (1), wherein the positioning device (1) comprises a mounting belt (101), a positioning block (102) and a pointing bar (104), a mounting structure is arranged on the mounting belt (101), the positioning block (102) is arranged between the mounting belt (101) and the pointing bar (104), and a penetrating structure (105) is arranged in the positioning block (102);

the protector (2) is connected with the positioner (1) through the mounting structure, a blocking piece (201) is arranged on the protector (2), and the blocking piece (201) is in a bent plate shape and used for blocking a drill bit;

the guiding device (4) is provided with a plurality of penetrating guiding holes (401) in the guiding device (4), wherein a part of the guiding holes (401) are used for guiding the Kirschner wire to the affected part, and the rest of the guiding holes (401) are used for guiding the drill bit to the affected part.

2. The osteotomy instrument of claim 1, wherein: the protector (2) further comprises a handle, and the blocking piece (201) is arranged on the handle.

3. The osteotomy instrument of claim 1 or 2, wherein: locating piece (102) upper portion is provided with constant head tank (103) that width direction runs through, constant head tank (103) extend to the outer edge of locating piece (102), constant head tank (103) end is the arc, director (4) outside both sides be provided with bellied cylinder (402) that constant head tank (103) correspond for install on locator (1) director (4).

4. The osteotomy instrument of claim 1, wherein: the positioner (1) and the protector (2) are detachably connected.

5. The osteotomy instrument of claim 1, wherein: the positioner (1) and the guider (4) are detachably connected.

6. The osteotomy instrument of claim 2, wherein: set up mounting groove (203) on the handle, mounting groove (203) are followed handle length direction sets up, install area (101) insert mounting groove (203) and slide adjusting position in the mounting groove, carry out fixed connection after adjusting the position.

7. The osteotomy instrument of claim 6, wherein: the osteotomy instrument further comprises a locking member (3) for locking the connection of said locator (1) and said protector (2).

8. The osteotomy instrument of claim 7, wherein: the handle is provided with a locking hole (202), the locking hole (202) is formed in the bottom surface of the mounting groove (203), and the locking component (3) penetrates through the mounting structure of the mounting belt (101) and is connected into the locking hole (202).

9. The osteotomy instrument of claim 1, wherein: after the positioner (1) and the guider (4) are installed, the guide hole (401) points to the blocking piece (201).