Medical puncture needle and method for manufacturing puncture needle
US10722264B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 30, 2018 |
| Grant date | Jul 28, 2020 |
| Priority date | — |
| Expiry date | Jun 9, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M25/0606
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A medical puncture needle includes: a distal end portion including a needle point; and a rod-like main body portion continuous with the distal end portion. The distal end portion includes a blade surface. The blade surface includes: a first blade surface portion on a front side of the distal end portion, the first blade surface portion being inclined with respect to a center axis of the main body portion and extending to the needle point, and a second blade surface portion on a back side of the distal end portion. When a virtual plane including the center axis of the main body portion is established, the second blade surface portion comprises a curved surface in which an angle with respect to the virtual plane in a cross section orthogonal to the center axis direction gradually increases toward the needle point side in the center axis direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.