A modular soft drill

Abstract

The invention discloses a modular soft drill, which comprises a transmission body, a helical section is provided at one end of the transmission body, a drill bit is provided at the other end of the helical section, and an electric drill is provided at the end of the transmission body away from the helical section. The moving body and the helical section are integrally formed, and the helical section and the drill bit are screwed together. The screw connection direction between the helical section and the drill bit is consistent with the rotation direction of the output end of the electric drill. The thread of the helical section There are gaps in between. A modular soft drill disclosed by the present invention has a large gap between the helical sections, which can be cleaned and disinfected after use, and can be reused; the connection mode of the helical section and the drill bit is to be screwed together, so that the straight line of the modular soft drill can be achieved. The section is short, and the operable space in the hip replacement operation is relatively sufficient, which reduces the difficulty of the operation; the mutual tightening connection makes the installation of the modular soft drill in one step, which can be used repeatedly and can also be used with different sizes. Acetabular cup.

Description

technical field [0001] The invention relates to the field of hip joint replacement, in particular to a modular soft drill. Background technique [0002] Artificial total hip joint is composed of artificial acetabular cup and artificial femoral head. Hip replacement surgery is the operation of replacing human hip joint with artificial hip joint. Specifically, the artificial acetabular cup is installed in the human acetabular socket, and the artificial femoral head The process of installation in the human femur. The installation of the artificial acetabular cup in the human acetabular socket is to fix the acetabular socket and the acetabular cup with screws. Before the screws are tightened, a hole needs to be drilled in the acetabular socket. The drilling action needs to be completed with a modular soft drill . There are some problems in the existing modular soft drills: 1. The existing modular soft drills include the drill bit section at the front end, the spring section in...

AI Technical Summary

Problems solved by technology

There are some problems in the existing modular soft drills: 1. The existing modular soft drills include the drill bit section at the front end, the spring section in the middle and the transmission section at the rear end. The spring section in the middle of this structure is very dense, and it is not easy to Cleaning and disinfection can only be used as a disposable device, resulting in waste of resources and uneconomical; 2. The connection method of the drill bit section and the spring section of the existing structure is to seize and assemble. The process is complicated, and there is also a new technology that uses screws to assemble. Specifically, screws are used to compress the drill section and the spring section. However, the space for hip replacement surgery is small, and assembly with screws will result in a longer straight section of the modular soft drill. It makes the surgical operation more difficult; 3. Assembly with screws requires an additional wrench to tighten the screws, and the screws are small. If they are loose, they are easy to lose, which makes the assembly complicated and cannot be completed in one step.

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