CN202386774U - Locking screw for setting bone - Google Patents

Abstract

The utility model relates to a mechanical instrument for clinical orthopaedics and particularly relates to a locking screw for setting a bone. The locking screw for setting the bone comprises a nut, a screw rod and a first screw thread, wherein the screw thread is installed on the screw rod, the nut is fixed at the top end of the screw rod, and at least three second screw threads are installed on the side wall of the nut. According to the locking screw for setting the bone, the screw threads are installed on the nut so that time for screwing the screw into a fixing bone setting plate is shortened, operation risks are reduced, and operation efficiency is increased.

Description

Lock screw is used in synthetism

Technical field

This utility model relates to a kind of orthopaedics clinical treatment apparatus, and lock screw is used in especially a kind of synthetism.

Background technology

Bone screw medically is being used to make bone be used for implant is fixed on vertebral body under combination again, fixation bone fracture plate or the situation at cancellous bone screw after the fracture; This synthetism nail is retained in the patient body usually for a long time; And can under the load effect, not get loose; Rotation is screwed into but present screw needs the time fixed the time, has so just prolonged the time of operation, has increased patient's operation risk.

The utility model content

Be screwed into long deficiency of time in order to overcome existing bone screw, this utility model provides a kind of synthetism to use lock screw.

This utility model solves the technical scheme that its technical problem adopted: lock screw is used in a kind of synthetism, comprises nut, shank of screw and screw thread one, and shank of screw is provided with screw thread one, and fixed by nut is on the shank of screw top, and the nut sidewall is provided with screw thread two.

According to another embodiment of this utility model, further comprise at least 3 of screw thread two quantity.

The beneficial effect of this utility model is that this synthetism, has been shortened it and has been screwed into the time of fixation bone fracture plate through the screw thread on the nut with lock screw, has reduced operation risk, has improved efficient.

Description of drawings

Below in conjunction with accompanying drawing and embodiment this utility model is further specified.

Fig. 1 is the structural representation of this utility model;

1. nuts among the figure, 2. screw rod, 3. screw thread one, and 4. screw thread two.

The specific embodiment

Like Fig. 1 is the structural representation of this utility model, and lock screw is used in a kind of synthetism, comprises nut 1, shank of screw 2 and screw thread 3 one; Shank of screw 2 is provided with screw thread 1; Nut 1 is fixed on shank of screw 2 tops, and nut 1 sidewall is provided with screw thread 24, at least 3 of screw thread 24 quantity.

On the nut 1 of screw, set up 3 screw threads 24; In operation, in the fixation bone fracture plate, use this screw that is threaded 24 nuts then, can obviously reduce the time that it is screwed into screwed hole; This synthetism is passed through the screw thread on the nut with lock screw; Shorten it and be screwed into the time of fixation bone fracture plate, reduced operation risk, improved efficient.

Claims (2)

1. lock screw is used in a synthetism; Comprise nut (1), shank of screw (2) and screw thread one (3), shank of screw (2) is provided with screw thread one (3), and nut (1) is fixed on shank of screw (2) top; It is characterized in that nut (1) sidewall is provided with screw thread two (4).

2. lock screw is used in a kind of synthetism according to claim 1, it is characterized in that at least 3 of screw thread two (4) quantity.

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