Radiation responsive surgical instrument

Details Radiation responsive surgical instrument Radiation responsive surgical instrument

1992-12-18

1995-08-15

Smith, Ruth S.

Surgery

Truss

Pad

128654, 25037001, 25037013, 25037015, A61B 600

Patent

active

054410509

ABSTRACT:
A crystal containing detector particularly suited for use in immunoguided surgery capable of detecting gamma emissions present at tumor sites. The instrument utilizes a cadmium-zinc-telluride detector crystal which may be retained within a finger mount positioned over the surgeon's finger. Within this mount there also is incorporated a first preamplification stage designed to accumulate charge signals from the detector as well as to drive a relatively short length of cable to a second preamplification stage located, for example, within a housing at the surgeon's upper arm. The small finger mounted probe may be moved between operative orientations at the underside of the tip of the finger to stand-by orientations at the top of the finger adjacent the knuckles. In an additional embodiment, the finger probe incorporates a sodium iodide crystal, the scintillations from which are transmitted via a short length of fiber optic cable to an upper arm mounted housing which contains a photomultiplier tube. Signals from the remote, arm-mounted housing then are transmitted via longer cabling or the like to a control console.

REFERENCES:
patent: 4695730 (1987-09-01), Noda et al.
patent: 4782840 (1988-11-01), Martin, Jr. et al.
patent: 4801803 (1989-01-01), Denen et al.
patent: 4889991 (1989-12-01), Ramsey et al.
patent: 4932412 (1990-06-01), Goldenberg
patent: 5070878 (1991-12-01), Denen
patent: 5151598 (1992-09-01), Denen
patent: 5152293 (1992-10-01), Vonesh et al.
"CdZnTe Gamma Ray Detector" by Butler et al.
Recent Developments in CdZnTe Gamma Ray Detector Technology by Butler, et al.
Properties of CdZnTe Crystals Grown by a High Pressure Bridgman Method by Doty et al.
Semi-Conductor Nuclear Particle Detectors and Circuits, pp. 476-483 Proceedings-Sub. Committee on Instruments and Techniques Committee on Nuclear Science (1969).

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