A pedicle screw for minimally invasive surgery
A pedicle screw and minimally invasive surgery technology, applied in the fields of surgery, medical science, internal bone synthesis, etc., can solve the problems of waste and increase the cost of surgery, and achieve the goal of reducing the cost of surgery, highlighting the substantive features, and reducing the cost of surgery. Effect
Active Publication Date: 2015-10-28
SHANDONG GUANLONG MEDICAL UTENSILS
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Problems solved by technology
But the long tail of this structure can only be discarded after one use, which not only causes waste, but also increases the operation cost, which is the deficiency of the existing technology
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[0011] In order to clearly illustrate the technical characteristics of this solution, the following describes this solution through a specific implementation mode combined with its accompanying drawings.
[0012] As can be seen from the accompanying drawings, the pedicle screw for minimally invasive surgery of this program has a U-shaped nail seat 2 and a hollow screw 1 connected with the U-shaped nail seat 2, and there is a threaded connection in the U-shaped nail seat 2. Cover 3, and long tail 9, this scheme is respectively integrally connected with nail seat short tail 5 on the two side walls of described U-shaped nail seat 2, on the two side walls of described U-shaped nail seat 2 and each described nail There is a breaking groove 4 between the short tails 5 of the seat, and the same thread that is threadedly connected with the compression cover 3 on the U-shaped nail seat 2 is arranged on the short tails 5 of the two nail seats. Also respectively have a mounting hole 11 o...
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The invention provides a technical scheme of a pedicle screw for minimally invasive surgery. The technical scheme includes that the pedicle screw comprises a U-shaped screw base and a hollow screw connected with the U-shaped screw base. A compacting cover in threaded connection with the U-shaped screw base and long tail wings are arranged in the U-shaped screw base. A short screw base tail is integrally connected to each of two side walls of the U-shaped screw base; broken grooves are formed between the two side walls of the U-shaped screw base and the short screw base tails respectively; same threads in threaded connection with the compacting cover on the U-shaped screw base are arranged on the two short screw base tails; a mounting hole is formed in each short screw base tail; the detachable long tail wings are connected to the short screw base tails respectively; inner-wall radian of the long tail wings is matched with outer-wall radian of the short screw base tails; clamping edges are arranged at the ends, connected with the short screw base tails, of the long tail wings; each clamping edge is matched with two side end faces of the corresponding short screw base tail; elastic pieces formed by elastic piece grooves in an encircling manner are arranged on the long tail wings; fastening heads matched with mounting holes of the short screw base tails are arranged on the elastic pieces.
Description
technical field [0001] The invention relates to a medical operation instrument for orthopedics, in particular to a pedicle screw for minimally invasive operation. Background technique [0002] In the prior art, the technical solution closest to this application is the utility model patent with the application number 201220624213.8, which was applied by the applicant and authorized by the Patent Office of the State Intellectual Property Office. This patent discloses a percutaneously placed The technical scheme of pedicle screw, this scheme adopts that there are long tail fins on the two side walls of the U-shaped nail seat of the pedicle screw, and there is a breaking groove between the two side walls of the U-shaped nail seat and the long tail fins. Due to the existence of the long tail fin, the minimally invasive operation that can be performed outside the skin can be realized during the operation, and the long tail fin can be broken off and taken out after the operation. ...
Claims
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IPC IPC(8): A61B17/86A61B17/70
CPCA61B17/00234A61B17/7032
Inventor 郝在晨申维波路雪城赵天明
Owner SHANDONG GUANLONG MEDICAL UTENSILS