CN-224206860-U - Multi-anchor-point bone taking device

CN224206860UCN 224206860 UCN224206860 UCN 224206860UCN-224206860-U

Abstract

The utility model provides a many anchor points get bone device, includes the sleeve, and the sleeve is inside to be equipped with movable channel, and the opening part of movable channel one end has a plurality of fins along its axial extension, and the fin can provide the anchor point of taking out in the femoral head neck sclerotin more, improves the control dynamics when taking out greatly for can be more stable and simple and convenient take out the femoral head, thereby reduce the operation time. The bone taking device further comprises a bone taking device, the bone taking device comprises a rod body matched with the movable channel, a cone portion is arranged at one end, close to the wing piece, of the rod body, a second handle is radially extended from the other end of the rod body, when the second handle is attached to the first handle, the cone portion is exposed out of the sleeve and drills into the femoral head, the bone taking device is embedded, finally, the bone taking device is pulled outwards to screw out the femoral head, and the bone taking device is simple in structure and convenient to operate and can effectively reduce difficulty in taking out the femoral head.

Inventors

HE MINGCHANG
CHEN ZHIDA
ZHAI WENLIANG
HUANG LIANSHUI
ZHOU LIANG
MIAO JIANYUN
ZHU LINGQI

Assignees

中国人民解放军联勤保障部队第九〇九医院

Dates

Publication Date: 20260508
Application Date: 20250108

Claims (8)

1. A multi-anchor bone harvesting device, comprising: A sleeve with a movable channel inside, a plurality of fins extending axially along the opening at one end of the movable channel, a first handle at the other end, and The bone taking device comprises a rod body matched with the movable channel, one end of the rod body, which is close to the wing piece, is provided with a cone part, the other end of the rod body radially extends to form a second handle, and when the first handle is abutted to the second handle, the cone part is exposed out of the sleeve; When taking bone, the wing pieces of the sleeve are driven into bone of the neck of the femoral head, and then the bone taking device is screwed in along the movable channel until the first handle is abutted to the second handle, and the bone taking device drills into the femoral head.
2. The bone harvesting device with multiple anchor points according to claim 1, wherein a limiting hole is formed in the bottom of the second handle, a mounting hole corresponding to the limiting hole is formed in the top of the first handle, an anti-rotation device is arranged in the mounting hole, and the anti-rotation device is clamped in the limiting hole when the second handle drives the limiting hole to rotate to be coaxial with the mounting hole.
3. The bone harvesting device with multiple anchor points according to claim 2, wherein the anti-rotation device comprises a clamping piece, the clamping piece is movably connected in the mounting hole, an elastic piece is connected between the clamping piece and the mounting hole, a limit protruding portion is circumferentially arranged on the clamping piece, a limit piece is arranged at an opening of the mounting hole, and the limit protruding portion is abutted to one end, close to the elastic piece, of the limit piece.
4. The bone harvesting device of claim 3, wherein the end of the clip exposed to the stop member is an outwardly projecting arcuate surface.
5. The multi-anchor bone-harvesting apparatus of claim 4, wherein the outer circumference of the shaft body is provided with external threads, and the movable channel is internally provided with internal threads adapted to the external threads.
6. The multiple anchor point bone extraction device of claim 5, wherein the outer periphery of said taper is provided with guide threads, said guide threads being equidistant from said external threads.
7. The multiple anchor point bone extraction device of claim 6, including at least three of said fins, each of said fins being equally spaced along the circumferential direction of said sleeve.
8. A multi-anchor bone extraction device as in claim 7, wherein said tab has barbs at its edges.

Description

Multi-anchor-point bone taking device Technical Field The utility model relates to the technical field of medical appliances, in particular to a multi-anchor-point bone taking device. Background In current medical practice, doctors commonly use a screw-type bone extraction device that is screwed into the cancellous bone of the femoral head by strong rotation to remove the femoral head. To stabilize the femoral head and prevent it from rotating, doctors often need to tap the bone extractor hard or use a k-wire to temporarily fix the femoral head. However, this mode of operation presents a certain risk of potentially causing accidental injury to the patient and to the surgeon. Especially when encountering femoral head necrosis or residual femoral head after osteotomy, the osteotomy device can hardly find a proper and stable anchor point, and can not smoothly take out the femoral head after osteotomy. Disclosure of utility model In view of the shortcomings of the prior art, the utility model aims to provide a multi-anchor-point bone taking device. In order to achieve the above purpose, the present utility model provides the following technical solutions: A multi-anchor bone harvesting device comprising A sleeve with a movable channel inside, a plurality of fins extending axially along the opening at one end of the movable channel, a first handle at the other end, and The bone taking device comprises a rod body matched with the movable channel, one end of the rod body, which is close to the wing piece, is provided with a cone part, the other end of the rod body radially extends to form a second handle, and when the first handle is abutted to the second handle, the cone part is exposed out of the sleeve; When taking bone, the wing pieces of the sleeve are driven into bone of the neck of the femoral head, and then the bone taking device is screwed in along the movable channel until the first handle is abutted to the second handle, and the bone taking device drills into the femoral head. The bottom of second handle is equipped with spacing hole, the top of first handle be equipped with spacing hole corresponds the mounting hole, be equipped with anti-rotation device in the mounting hole, the second handle drive spacing hole rotatory to with when the mounting hole is coaxial, anti-rotation device joint in the spacing hole. Further, the anti-rotation device comprises a clamping piece, the clamping piece is movably connected in the mounting hole, an elastic piece is connected between the clamping piece and the mounting hole, a limit convex part is arranged on the clamping piece along the circumferential direction, a limit piece is arranged at the opening of the mounting hole, and the limit convex part is abutted to one end, close to the elastic piece, of the limit piece. Further, one end of the clamping piece exposed out of the limiting piece is of an outwards protruding cambered surface structure. Further, an external thread is arranged on the periphery of the rod body, and an internal thread matched with the external thread is arranged in the movable channel. Further, the periphery of the cone portion is provided with guide threads, and the guide threads are equal to the external threads in distance. Further, the sleeve comprises at least three fins, and each fin is equidistantly distributed along the circumferential direction of the sleeve. Further, a plurality of barbs are arranged at the edge positions of the fins. The beneficial effects of the utility model are as follows: 1. The multi-anchor-point bone taking device comprises a sleeve, wherein a movable channel is arranged in the sleeve, a plurality of fins extend along the axial direction of the opening at one end of the movable channel, the fins can provide more anchor points for taking out in the bone of the head and neck of the femur, the control force during taking out is greatly improved, and the femoral head can be taken out more stably and simply, so that the operation time is shortened. The bone taking device further comprises a bone taking device, the bone taking device comprises a rod body matched with the movable channel, a cone portion is arranged at one end, close to the wing piece, of the rod body, a second handle is radially extended from the other end of the rod body, when the second handle is attached to the first handle, the cone portion is exposed out of the sleeve and drills into the femoral head, the bone taking device is embedded, finally, the bone taking device is pulled outwards to screw out the femoral head, and the bone taking device is simple in structure and convenient to operate and can effectively reduce difficulty in taking out the femoral head. 2. The multi-anchor-point bone taking device provided by the utility model further comprises an anti-rotation device, so that the bone taking device is prevented from reversely rotating due to collision in the bone taking process, and is deviated from the sleeve or separated from the fem