Universal precise acetabular cup screw extractor
An acetabular cup, precise technology, applied in the field of medical equipment, can solve the problems of not reaching the ideal angle, prosthesis dislocation, revision, etc., to achieve the effect of convenient reference and enhanced hand feeling
Pending Publication Date: 2021-02-26
天衍医疗器材有限公司
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Problems solved by technology
During operation, the fixing force of the screw is controlled by the doctor's experience value, there is no size limit, if the force is too large, it will cause damage to the body; if the force is too small, the screw fixation will be unstable
The angle of implantation is determined by visual inspection. When the acetabular cup is fixed, the prosthesis will be displaced and the ideal angle will not be achieved. After surgery, the prosthesis is likely to dislocate and lead to revision
Method used
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[0027] Example: see Figure 1~5 , the present invention provides a technical solution: a universal precision acetabular cup nail remover, including a handle 1, an extension rod 2 is provided on one side of the handle 1, the inside of the extension rod 2 is hollow, and a nail removal rod 13 is arranged inside the extension rod 2, and the nail removal method One end of the rod 13 passing through the extension rod 2 is provided with a rear fork 3, and the side of the rear fork 3 away from the extension rod 2 is provided with a front fork 4, and the rear fork 3 and the front fork 4 are connected by a hinge structure 29, so that the nail can be removed The head of the nail remover can rotate freely. The acetabular cup is the prosthesis of the human femur. During the operation, the doctor needs to operate at the position of the acetabular fossa. The operation space is limited and complicated. The head of this nail remover can be rotated 360 degrees, which is convenient The doctor ac...
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The invention discloses an universal precise acetabular cup screw extractor, which comprises a handle, a extension rod is arranged on one side of the handle, the interior of the extension rod is hollow, a screw extracting rod is arranged in the extension rod, a rear fork is arranged at the end, penetrating out of the extension rod, of the screw extracting rod, and a front fork is arranged on the side, away from the extension rod, of the rear fork; the rear fork and the front fork are connected through a hinge structure, a first edge protrusion is arranged on the side, facing the front fork, ofthe rear fork, a second edge protrusion is arranged on the side, facing the rear fork, of the front fork, a resistance spring is arranged between the first edge protrusion and the second edge protrusion, and a screw pulling head is arranged on the end, away from the rear fork, of the front fork. The screw extractor provided by the invention has a rotatable head, which is convenient for a doctor to align to a screw of an acetabular cup accurately, the problem that the screw extractor is difficult to operate is solved, the resistance spring provides resistance to the hinge structure, so that the head of the screw extractor has certain resistance when rotating, the hand feeling of a user is enhanced, and then the screw of the acetabular cup can be positioned rapidly and accurately.
Description
technical field [0001] The invention relates to the technical field of medical devices, in particular to a universal precision acetabular cup nail remover. Background technique [0002] After more than 30 years of clinical practice, the therapeutic effect of artificial hip replacement has been fully affirmed and developed into a reliable treatment method. The main purpose of artificial joint replacement is to relieve joint pain, correct deformity, restore and improve joint motion function. [0003] In hip surgery, the fixation and removal of implants requires the use of screws and staple removers. During the operation, the fixing force of the screw is controlled by the doctor's experience value, and there is no size limit. If the force is too large, it will cause damage to the body; if the force is too small, the screw fixation will be unstable. The angle of implantation is determined by visual inspection. When the acetabular cup is fixed, the prosthesis will be displaced,...
Claims
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IPC IPC(8): A61B17/92
CPCA61B17/92
Inventor 刘娟周海利
Owner 天衍医疗器材有限公司