Matrix-pin-type bone surface coordinate mapper

Abstract

The invention relates to a matrix-pin-type bone surface coordinate mapper which comprises an outer sleeve, wherein measurement pins are disposed in the outer sleeve, a plurality of elastic limiting assemblies are disposed in the outer sleeve, each measurement pin is sleeved inside each elastic limiting assembly, the measurement pins consist of multiple protective pins and multiple collection pins,the diameter of each protective pin is larger than the diameter of each collection pin, pressure applying assemblies are installed in the outer sleeve, and a working end of each pressure applying assembly is corresponding to the tail end of each collection pin. In this way, the measurement pins are constituted through coordination of the protective pins and the collection pins, a cohesion effectof the collection pins can be realized by the protective pins, arrangement is denser and deformation is avoided, and coordinates obtained are more accurate. Effective flexible pressurizing can be satisfied through use of the mapper in cooperation with an air gun. With high universality, the mapper is applicable to various orthopedics robot operations and can be expanded to other surgical operations. A range fed back by the measurement pins can be collected accurately through existence of a laser range finder, so effective bone surface coordinate points can be acquired.

Description

technical field [0001] The invention relates to a coordinate mapper, in particular to a matrix pin type bone surface coordinate mapper. Background technique [0002] In recent years, some orthopedic surgical robots have been put into clinical practice one after another, such as spinal surgery robots and joint surgery robots. They have greatly improved the technical level of digital orthopedic surgery through bone surface coordinate acquisition and registration technology, and played a vital role in promoting the rapid development of orthopedic surgery in the direction of personalization, precision and minimal invasiveness. [0003] The key technology of orthopedic surgical navigation and surgical robot system—bone coordinate acquisition and registration methods can be divided into the following categories. [0004] 1. Non-contact bone surface coordinate acquisition technology, which includes: [0005] (1) Laser scanning. For example, the Robodoc system adopts invasive mar...

AI Technical Summary

Problems solved by technology

However, in practical applications, it is found that due to structural problems, it still has defects such as sparse measurement data and the need to increase the measurement position by moving to increase the data density. This can only be achieved with the assistance of a complex high-precision mobile transposition mechanism, resulting in low efficiency. , Measurement accuracy may be affected by limited movement and other deficiencies

Images