Gelatin based on Power-gel™ as solders for Cr4+laser tissue welding and sealing of lung air leak and fistulas in organs
US7033348B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2002 |
| Grant date | Apr 25, 2006 |
| Priority date | — |
| Expiry date | Apr 10, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/0065
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Laser tissue welding can be achieved using tunable Cr4+ lasers, semiconductor lasers and fiber lasers, where the weld strength follows the absorption spectrum of water. The use of gelatin and esterified gelatin as solders in conjunction with laser inducted tissue welding impart much stronger tensile and torque strengths than albumin solders. Selected NIR wavelength from the above lasers can improve welding and avoid thermal injury to tissue when used alone or with gelatin and esterified gelatin solders. These discoveries can be used to enhance laser tissue welding of tissues such as skin, mucous, bone, blood vessel, nerve, brain, liver, pancreas, spleen, kidney, lung, bronchus, respiratory track, urinary tract, gastrointestinal tract, or gynecologic tract and as a sealant for pulmonary air leaks and fistulas such as intestinal, rectal and urinary fistulas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.