Magnetic markers for surgical guidance
US11191612B2 · kind B2 · utility
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5References
20Claims
0Family size
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Key dates
| Filing date | Mar 18, 2019 |
| Grant date | Dec 7, 2021 |
| Priority date | — |
| Expiry date | Mar 18, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/3991
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An implantable magnetic marker comprising at least one piece of a large Barkhausen jump material (LBJ) containing at least one loop. The coiled marker is deployed to mark a tissue site in the body for subsequent surgery, and a magnetic detection system with a handheld probe excites the marker above or below the switching field required for bistable switching of the marker causing a harmonic response to be generated in a bistable or sub-bistable mode that allows the marker to be detected and localised.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.