Puncture needle
US11517667B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2021 |
| Grant date | Dec 6, 2022 |
| Priority date | — |
| Expiry date | Mar 31, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/3375
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A hollow puncture needle includes: a needle body portion; a needle distal end portion that extends from the needle body portion in a distal direction and that includes a blade surface that is inclined with respect to an axis of the puncture needle; and an ultrasonic wave reflecting structure including at least one reflecting portion having a concave or hole shape that opens on an inner peripheral surface of the needle distal end portion. An inner surface of the reflecting portion includes a pair of inclined surfaces that face each other, wherein a distance between the inclined surfaces becomes smaller in a direction towards an outer peripheral surface side of the needle distal end portion. The inclined surfaces is parallel to the axis of the puncture needle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.