Soft module drill

Abstract

The invention discloses a soft module drill. The soft module drill comprises a transmission body; a spiral section is arranged at one end of the transmission body; a drill bit is arranged at the otherend of the spiral section; an electric drilling tool is arranged at the end, away from the spiral section, of the transmission body; the transmission body and the spiral section are integrally formed; the spiral section is in threaded connection with the drill bit; the threaded connection direction between the spiral section and the drill bit is consistent with the rotating direction of the output end of the electric drilling tool; and a gap is formed between threads of the spiral section. According to the soft module drill, the gap of the spiral section is large, cleaning and disinfection can be conducted on the soft module drill after the soft module drill is used, and the soft module drill can be repeatedly used; the spiral section and the drill bit are connected in a mutually screwedmode, the straight line section of the soft module drill is relatively short, the operable space in a hip replacement surgery is relatively sufficient, and the operation difficulty of the surgery is reduced; and the mutual screwing connection mode enables the soft module drill to be installed in one step, and the soft module drill can be matched with acetabular cups of different sizes while beingrepeatedly used.

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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