Systems, devices and methods of making highly elastic suture needles for minimally invasive surgery
US11612392B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2020 |
| Grant date | Mar 28, 2023 |
| Priority date | — |
| Expiry date | May 23, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/06095
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An elastic suture needle for passing through a smaller cannula used in minimally invasive surgery includes an elongated body having a proximal end, a distal end, a length extending from the proximal end to the distal end, a top surface extending along the length of the elongated body, and a bottom surface extending along the length of the elongated body. The elongated body has dimensions that are calculated using the equation T/LN<(4*σ)/(πE), where T is the thickness of the elongated body, LN is the length of the neutral axis of the elongated body, σ is the yield strength of the elongated body, and E is the Young's modulus of the elongated body. The elongated body is made of stainless steels such as martensitic stainless steels, austenitic stainless steels, martensitic-aged (mar-aged) stainless steels, and stainless steels sold under the registered trademark ETHALLOY® Needle Alloy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.