Multi-lumen arthroscopy cannula (MLAC) and methods of use
US11540858B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2019 |
| Grant date | Jan 3, 2023 |
| Priority date | — |
| Expiry date | Mar 15, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2217/007
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A multi-lumen arthroscopy cannula (MLAC) is described which may be used to contain and manage joint irrigation fluid as a means of improving the state of arthroscopic surgery. The MLAC includes an arrangement of components within a cannula housing. An internal passage (central lumen) through which surgical instruments may be inserted into the body includes a series of components which greatly reduce the leakage path of fluid through the central lumen while enabling manipulation of surgical instruments during arthroscopic procedures. A dual-tapered diaphragm seal grips the instruments as it is manipulated to prevent leakage. This works in concert with the consecutively placed multi-leaflet valves, which act to prevent internal leakage and maintain pressure within the surgical cavity. Unique features of this cannula, aside from the multiple valves and dual-tapered diaphragm seal, include bilateral lumens which provide infusion and withdrawal of irrigation inside the joint capsule. Complementary to this is an elongated central lumen which accommodates both straight- and curved-tip arthroscopic instruments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.