Skin biopsy trepan
A trephine and skin technology, applied in the field of medical devices, can solve the problems of skin pathological extraction failure, damage to the negative pressure of the trephine body, inconvenient use and operation, etc., achieving remarkable practicability and novelty, reducing operation difficulty, and convenient operation. Effect
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[0015] See attached figure 1 As shown, the drill rod 11 is tubular, and the inside is provided with a piston 2 and a push-pull rod 3 connected to the piston 2, and a tooth-shaped gap 6 is opened on one side of the push-pull rod 3; the lower end of the drill rod 11 is threadedly connected with a drill bit 1; the handle 9 is vertical It is arranged on one side of the upper end of the drill rod 11. One end of the handle 9 connected to the drill rod 11 is provided with a slotted hole along the length direction, and a sliding pin 10 is arranged in the slotted hole. The outer end of the sliding pin 10 is provided with a wedge-shaped head 4, and the other end Then be provided with back-moving spring 8, under the thrust effect of back-moving spring 8, wedge-shaped head 4 keeps the trend of moving outwards all the time, and it abuts against tooth-shaped notch 6 and cooperates, and push-pull bar 3 positions can be positioned, and handle 9 is provided with There is a sliding key 7 that d...
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