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Multifunctional device for screwing out bone nail

A multi-functional, bone screw technology, applied in the direction of fixator, etc., can solve the problems of difficult removal of bone screws, slippage of the slotted slot or inner hexagonal slot of the bone screw, etc., and achieve the effect of shortening the size, shortening the stroke, and simple operation.

Inactive Publication Date: 2007-09-26
谢福广
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In clinical orthopedic surgery, it is often encountered that the in-line notch of the bone screw or the hexagonal notch of the bone screw slips during the internal fixation process of the patient after the internal fixation of the plate screw, making it difficult to remove the bone screw

Method used

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  • Multifunctional device for screwing out bone nail
  • Multifunctional device for screwing out bone nail
  • Multifunctional device for screwing out bone nail

Examples

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] The present invention as shown in Fig. 1, Fig. 2, comprises: unscrewing device frame 6, the lower end of unscrewing device frame 6 has grasping bone claw 8, and the inner surface of grasping bone claw 8 has anti-slip groove 9. The inner screw 2 has an external thread, the inner screw 2 is fixedly connected with the inner screw handle 1, the outer layer of the inner screw 2 has a threaded sleeve 4, the inner wall of the threaded sleeve 4 has an internal thread, the threaded sleeve 4 There are external threads on the outer wall, and the internal screw rod 2 is screwed into the threaded sleeve 4, and the threaded sleeve 4 is fixedly connected with the threaded sleeve handle 3; into the nut 5; the lower end of the inner screw 2 has a screw-out tool edge 7.

[0029] The screw direction of the external thread of the present invention and the ...

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Abstract

Disclosed a multifunctional bone peg spin-out device comprises an inner screw and spin-out carrier. Wherein, the inner screw with screw thread outer has been mounted with a handle of inner screw; the lower end of spin-out carrier has bone-clamp claws while the inner surface of inner bone-clamp claw has anti-slip groove; the outer layer of screw has a screw muffle whose inner wall has inner screw thread and the outer wall has outer screw thread; the inner screw is screwed into the screw muffle which has be mounted with a handle of screw muffle; the spin-out carrier is connected with a nut into which the screw muffle is screwed; the lower end of inner screw has the blade of spin-out device whose end surface is in the straight shape or cross wing whose side surface has blade; the outer screw thread of inner screw is reverse to the outer screw thread of outer wall of screw muffle, to shorten the distance of run. The invention can be utilized to press the bolt and the side surface of blade of spin-out device has edge, therefore, it can clamp the bolt tightly to skid the screw which can be screwed out too.

Description

technical field [0001] The invention relates to a medical orthopedic bone screw extractor, in particular to a multifunctional bone screw unscrewer. Background technique [0002] In clinical orthopedic surgery, it is often encountered that the in-line notch of the bone screw or the hexagonal notch of the bone screw slips during the internal fixation process of the patient after the internal fixation of the plate screw, making it difficult to take out the bone screw. [0003] Patent No. 200420030701, a utility model titled "Bone Screw Extractor", discloses a bone screw extractor, which belongs to medical equipment, including a screwdriver and a positioning tube. The knife rod is inserted into the positioning tube, and there is a fastening nut outside the positioning tube. Fasten the knife rod and the positioning tube, the knife handle is placed outside the positioning tube, and the knife rod is fixedly installed in the knife handle. There is a side hol...

Claims

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Application Information

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IPC IPC(8): A61B17/92
Inventor 谢福广王涛张秀美宋雪华陈立梅
Owner 谢福广
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