Piercing needle-equipped cannula
US10765554B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 29, 2016 |
| Grant date | Sep 8, 2020 |
| Priority date | — |
| Expiry date | Jun 8, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F9/0017
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
There is provided a piercing needle-equipped cannula that has a pre-attached piercing needle, and no deformation of the slit portion due to the piercing needle is left after the piercing needle is pulled out. A piercing needle-equipped cannula (100) includes: a cannula (10) pierced in an eyeball and used in ophthalmic operations; a resin cap (13) having a slit (13a) opened in the cannula (10); and a piercing needle (15) attached to the cannula (10). The piercing needle (15) includes a needle main body (15c) on a front end side, a base (15d) on a base end side, and a slit piercing part (15s) piercing the slit (13a) in a state where the needle main body (15c) and the base (15d) are connected, and the cross-sectional area of the slit piercing part (15s) is smaller than that of the thickest part of the needle main body (15c).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.