Cryogenic kyphoplasty instrument and methods of use
US9936997B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 28, 2014 |
| Grant date | Apr 10, 2018 |
| Priority date | — |
| Expiry date | Jun 2, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/064
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A surgical instrument includes an outer shaft defining a passageway. An inner shaft is disposed within the passageway and defines a lumen. An expandable structure has a first end coupled to a second end of the outer shaft and a second end coupled to a second end of the inner shaft. The expandable member defines a chamber. A delivery shaft includes a first end positioned within the passageway and a second end positioned within the chamber. The delivery shaft defines a channel configured to deliver a coolant out of an opening in the second end of the delivery shaft and into the chamber to move the expandable structure from an unexpanded configuration to an expanded configuration. A variable exhaust valve is in communication with the passageway and is configured to regulate pressure within the chamber. Systems and methods are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.