CN210185645U

CN210185645U - Bone grinder

Info

Publication number: CN210185645U
Application number: CN201920668397.XU
Authority: CN
Inventors: Chunpu Zhang; 张纯朴; Yingze Zhang; 张英泽; Jinsheng Zhang; 张津生; Lei Sun; 孙磊
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-10
Filing date: 2019-05-10
Publication date: 2020-03-27
Anticipated expiration: 2029-05-10

Abstract

The utility model relates to a grind bone object, its structure is equipped with a plurality of screws that radially link up for being the side anchor ring of the annular mill skeleton of circle the spiro union has the molar in the screw, the cylinder structure of molar for being equipped with the external screw thread section is equipped with the blade that can grind the bone at the medial extremity of cylinder structure, is equipped with the pivoted recess of being convenient for change a knife at the outside end of cylinder structure, the length of molar is greater than the radial thickness of mill skeleton ring. The utility model discloses simple structure, convenient to use can be as required at the mill skeleton installation one or more molars to available change the rotatory molars of sword and adjust its position at the screw, thereby adjust the bone piece of the distance of grinding the skeleton center in order to adapt to not equidimension from grinding the skeleton.

Description

Bone grinder

Technical Field

The utility model belongs to the technical field of the medical instrument technique and specifically relates to a grind bone object.

Background

In fracture surgery, it is sometimes necessary to cut two bones to be butted, for example, in the treatment of old nonunion, the fracture is difficult to heal due to infection, local blood supply insufficiency, fracture end separation, fracture stability insufficiency and the like, muscle fiber tissue at the fractured bone grows into the fractured bone seam, bone marrow is closed, new bone grown from the fractured bone is accumulated outwards to make the fractured bone end swell, and the new bone is continuously hardened under the condition of insufficient blood supply, and the condition generally needs to be treated by surgery to ensure that the fractured bone is butted and fixed again.

At present, in the operation of nonunion, muscle tissue is required to be stripped firstly, bone marrow is opened, then the sclerotic bone surface at the fractured end of the bone is removed, the sclerotic bone is usually chiseled by using the existing orthopedic instruments such as an osteotome, the fractured surface and the outer wall of the fracture are exposed out of a fresh wound surface and then are butted and fixed, the existing orthopedic instruments are not only inconvenient to operate, but also the osteotome is easy to split the bone when the sclerotic bone is actually removed, and secondary damage is caused. The removal of the sclerotic bone at the fractured bone end and other situations needing similar bone removal are safer and easier to control by adopting a bone grinding mode, but no special bone grinder or related reports are found in the market at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bone grinder to solve the problem that the operation is inconvenient to get rid of to the current broken bone end sclerosis bone, does not have the bone grinder who is suitable for.

The utility model discloses a realize like this: the utility model provides a grind bone object, its structure is equipped with a plurality of radial screw that link up for being the side anchor ring of annular mill skeleton the spiro union has the molar in the screw, the cylinder structure of molar for being equipped with the external screw thread section is equipped with the blade that can grind the bone at the medial extremity of cylinder structure, is equipped with the pivoted recess of being convenient for change sword at the outside end of cylinder structure, the length of molar is greater than the radial thickness of mill skeleton ring.

The groove is a straight groove.

The cross section of the grinding framework is square.

The screw is four, four even interval distributions in four screw grind the skeleton.

The utility model discloses simple structure, convenient to use can be as required at the mill skeleton installation one or more molars to available change the rotatory molars of sword and adjust its position at the screw, thereby adjust the bone piece of the distance of grinding the skeleton center in order to adapt to not equidimension from grinding the skeleton.

The utility model discloses the flexibility ratio is big during the use, can hand the operation of mill skeleton, also can realize automatic operation with the help of other drive arrangement, and the accessible rotates and grinds the skeleton and carry out the grinding simultaneously to the whole circle outer wall of bone fracture end, also can only install one or two molars, carries out the grinding to the hard bone of local salient, and simple operation and security are high, suitable popularization and application.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a side view of fig. 1.

In the figure: 1. grinding framework, 2 grinding teeth, 3 cutting edge, 4 straight groove.

Detailed Description

As shown in fig. 1 and 2, the utility model discloses a structure is including being annular mill skeleton 1 and locating the molar 2 who grinds skeleton 1, mill skeleton 1 is square steel sheet by the cross-section and makes, the even interval of side anchor ring that grinds skeleton 1 is equipped with four screws that radially link up, the screw is M10 fine screw bolt hole 1, screw thread grinding 2 in the screw, grinding 2 is the cylinder structure of being equipped with the external screw thread section, the external screw thread section is M10 fine screw thread 1, be equipped with blade 3 that can the grinding bone at the medial extremity of cylinder structure, blade 3 is for designing an opening at grinding 2's medial extremity, two borders of opening form sharp-pointed grinding portion, be equipped with the one word groove 4 of being convenient for change sword pivoted at the outside end of cylinder structure, the length of grinding 2 is greater than the radial thickness of mill skeleton 1 ring.

When the grinding framework is applied, the grinding framework 1 is sleeved at the broken end of a bone to be ground, the grinding framework 1 is rotated, so that the cutting edge of the grinding tooth 2 grinds the bone surface, and the depth of the grinding tooth 2 extending into the circular ring can be adjusted by using a screwdriver, so that the size of the middle grinding part can be adjusted and adapted. Can hand mill skeleton 1 operation, also can realize automatic operation with the help of other drive arrangement, the accessible rotates mill skeleton 1 and carries out the grinding simultaneously to the whole circle outer wall of bone broken ends, also can only install one or two molars, grinds the hard bone of local salient.

Claims

1. The utility model provides a bone grinder, characterized by is equipped with a plurality of screws that radially link up at the side anchor ring that is annular mill skeleton the spiro union has the molar in the screw, the cylinder structure of molar for being equipped with the external screw thread section is equipped with the blade that can grind the bone at the medial extremity of cylinder structure, is equipped with the pivoted recess of being convenient for change sword at the outside end of cylinder structure, the length of molar is greater than the radial thickness of mill skeleton ring.

2. The bone mill as in claim 1, wherein the groove is a straight groove.

3. The bone mill as set forth in claim 1, wherein the cross-section of the mill frame is square.

4. The bone grinder as claimed in claim 1, wherein the number of the screw holes is four, and the four screw holes are uniformly distributed on the grinding frame at intervals.