Medical material needle
US12070243B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 17, 2021 |
| Grant date | Aug 27, 2024 |
| Priority date | — |
| Expiry date | Sep 9, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/3925
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A medical material needle, applicable for detection and positioning by an ultrasound, includes a needle body having a three-layer structure. The three-layer structure includes an outer structure, an inner structure, and a middle structure disposed between the outer structure and the inner structure. The outer structure and the middle structure have different characteristic acoustic impedance with respect to the ultrasound, the inner structure and the middle structure have different characteristic acoustic impedance with respect to the ultrasound, and at least one of the outer structure, the middle structure and the inner structure is provided with a dimension in at least one direction less than a wavelength at a frequency of the ultrasound in water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.