Suspension arm type odontoid guide needle sighting device
A cantilever type, aiming technology, applied in medical science, surgery and other directions, can solve the problems of internal fixation screw offset, cannot be connected in series, affecting the operation effect, etc., and achieves the effect of reliable fixation, easy adjustment and accurate aiming.
A cantilever type, aiming technology, applied in medical science, surgery and other directions, can solve the problems of internal fixation screw offset, cannot be connected in series, affecting the operation effect, etc., and achieves the effect of reliable fixation, easy adjustment and accurate aiming.
CN103445853AInactive Publication Date: 2013-12-18徐兆万
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[0019] Referring to the accompanying drawings, the cantilever type denticule guide pin collimator includes two lower connecting seats 1 oppositely arranged, and the two lower connecting seats 1 respectively have an upper pressing plate 11 and a lower supporting plate 12 which are parallel up and down and arranged correspondingly. A plurality of jacking bolts 13 are screwed on the plate 11, and a door-shaped cantilever 2 with a circular cross section is fixedly connected between the two opposite upper pressing plates 11, and the door-shaped cantilever 2 is respectively fixed on the two upper pressing The two sections of L-shaped cantilever 2-1 are composed of two sections of L-shaped cantilevers 2-1 on the back plate 11. The opposite extending ends of the two L-shaped cantilevers 2-1 are connected by sliding and rotating connecting blocks. The mutual displacement of -1 controls the length of the gate-shaped cantilever 2, and any section of the L-shaped cantilever 2-1 can be rota...
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The invention discloses a suspension arm type odontoid guide needle sighting device, which comprises two lower connecting seats, wherein the two lower connecting seats are respectively provided with an upper pressing plate and a lower support plate, each upper pressing plate is screwed with a plurality of jacking bolts, an n-shaped suspension arm is fixedly connected between the two opposite upper pressing plates, and is sheathed with an upper clamping block, the upper clamping block is provided with an upper adjusting bolt column in a penetrating way, one end of the upper adjusting bolt column is screwed with an upper adjusting nut, the other end of the upper adjusting bolt column is provided with a conical penetrating column, the surface of the upper clamping block is provided with a conical annular groove, the lower part of an upper adjusting rod is sheathed with a lower clamping block, the lower clamping block is provided with a lower adjusting bolt column in a penetrating way, one end of the lower adjusting bolt column is screwed with a lower adjusting nut, the other end of the lower adjusting bolt column is provided with a lower penetrating column, the lower penetrating column is provided with a lower penetrating hole, a working sleeve tube penetrates into the lower penetrating hole, the interior of the working sleeve tube is rotationally connected with a sighting sleeve tube, the upper end of the sighting sleeve tube is provided with a handle, and the lower end of the sighting sleeve tube is provided with clamping teeth. The device has the advantages that the fixing is reliable, the sighting is accurate, the adjustment is simple and convenient, and the reaming depth is conveniently and accurately controlled.
Description
technical field [0001] The invention belongs to the technical field of orthopedic surgery medical instruments, and in particular relates to a cantilever type dento-process guide pin aimer. Background technique [0002] Cannulated screw fixation for odontoid fractures through the anterior cervical approach has a history of 20 years. It is mainly used for Anderson type Ⅱ and Anderson superficial Ⅲ odontoid fractures. The operation is difficult, and inaccurate positioning of the hollow screw will lead to deviation of the internal fixation screw and tooth fracture. Poor healing or malunion of condylar fractures, and even stabbing of the dura mater and nerves. When performing internal fixation of odontoid fractures with screws, the first step is to penetrate the Kirschner wires. Because the Kirschner wires are thin and long, it is difficult to grasp the direction of needle insertion, and deviations are prone to occur. If it is necessary to correct and re-insert the needle, it is...
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Patent Timeline
18 Dec 2013
Publication
CN103445853A
- IPC
- A61B17/90
- Inventors
- 徐兆万; 于明东