Ultrasound needle tip localization system
US4249539A · kind A · utility
224Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1979 |
| Grant date | Feb 10, 1981 |
| Priority date | — |
| Expiry date | Feb 9, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/3929
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A B-scan pulse echo ultrasound system produces a real time image of a body area under inquiry, and an aspiration needle is inserted directly into that area. The needle carries a small, omni-directional ultrasound transducer, electrically connected through the needle to transponder electronics. Incident pulses from the imaging transducer to the omni-directional transducer are sensed at the latter, and the position thereof is inserted into the image either by generation of a return signal from the needle point, or through delay logic and subsequent production of a composite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.