Surgical implement detector utilizing a radio-frequency identification marker
US7307530B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Feb 10, 2005 |
| Grant date | Dec 11, 2007 |
| Priority date | — |
| Expiry date | Aug 4, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B90/98
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A radio-frequency surgical implement detection system detects surgical implements in a surgical wound during and at the completion of a surgical procedure. Surgical implements, including surgical sponges or laparotomy pads, gauze pads and metallic surgical instruments, are individually attached to a non battery-powered, encapsulated radio-frequency marker. The marker comprises an integrated chip having a burnt-in memory code, which is broadcast through an antenna using a modulated carrier frequency. The code is received by an interrogating antenna of a detector. The interrogating antenna provides a power pulse, which is received by the antenna of the radio-frequency marker. The power pulse charges a capacitor, which proves power for the read function, carrier frequency modulation function and broadcast function of the integrated chip, permitting each marker-containing implement to be specifically identified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.