Skin scale for operation

By designing the scale strips and magnetic block structure of the skin ruler, the stability and image compatibility issues of surface marking tools during surgery were solved, achieving high-precision, low-cost intraoperative positioning and measurement, and simplifying the operation process.

CN224403782UActive Publication Date: 2026-06-26刘莘雨
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Patent Information

Application Number
CN202520733098.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-17
Publication Date
2026-06-26
Estimated Expiration
2035-04-17

AI Technical Summary

Technical Problem

Existing surgical surface marking tools cannot provide a stable and durable reference benchmark due to wear and tear caused by disinfection, sweat, or intraoperative operations. They also lack image compatibility and are difficult to calibrate simultaneously during intraoperative fluoroscopy. Traditional ruler plates or electromagnetic navigation systems are costly and complex to operate, making them difficult to popularize.

Method used

A skin ruler was designed, which uses graduated strips and magnetic blocks to achieve dynamic adjustment of the spacing. Combined with metal wires and strap buckles, it ensures a close fit to curved body surfaces and is clearly visible in X-rays and CT scans. It provides a unified ruler reference and supports quick assembly and disassembly.

Benefits of technology

The imaging grid eliminates magnification distortion caused by differences in the distance of the radiation source, reduces measurement error to less than 10%, achieves an intraoperative displacement rate of less than 1.5 mm, shortens operation time by 40%, and costs only 5% of traditional navigation equipment.

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Abstract

A skin scaleplate for an operation mainly comprises a transverse scaleplate and a longitudinal scaleplate which are vertically connected with each other and are connected with a detachable bandage through a connecting block. And a metal wire grid structure with adjustable spacing is arranged between the ruler plates and comprises metal wires which are transversely and longitudinally arranged. Accurate scales are arranged on the surface of the ruler plate to facilitate direct measurement. The distance between the longitudinal metal wires is controlled through a thread adjusting mechanism, and the transverse metal wires are rapidly positioned through a magnetic attraction type sliding fixing device. And the bandage is quickly disassembled and assembled through the buckle type connector. The dental implant is made of medical-grade materials, and has good biocompatibility and perspective developing performance. The device solves the problem of measurement errors caused by body position changes, skin stretching and other factors in traditional operation positioning, and a stable and reliable body surface positioning reference can be provided. The body surface positioning device is simple in structure and convenient to operate, and can be widely applied to medical operations such as orthopedic surgery and tumor needle biopsy needing accurate body surface positioning.
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