Transcutaneous probe

Details Transcutaneous probe Transcutaneous probe

1978-11-14

1980-09-02

Cohen, Lee S.

Surgery

Truss

Pad

204195B, 204195P, A61B 500

Patent

active

042201586

ABSTRACT:
A transcutaneous probe for causing oxygen and other gases or vapors carried in the bloodstream of a mammal to be extracted from the blood through the skin and passed to a device, such as a mass spectrometer, for analyzing the extracted gas. The probe has a boundary wall intended to be placed in contact with the skin comprising a first layer of gas permeable material and a second layer of perforate or porous gas-impermeable material in intimate contact with the first, the size and distribution of the perforations or pores in the second layer being such that the wall has a substantially uniform extrinsic macropermeability which is significantly lower than the inherent permeability of the first layer alone and such that in use, gas passes into the perforations or pores of the second layer from respective volumes of tissue which do not substantially overlap.

REFERENCES:
patent: 3658053 (1972-04-01), Fergusson et al.
patent: 3659586 (1972-05-01), Johns et al.
patent: 3718563 (1973-02-01), Krull et al.
patent: 3767552 (1973-10-01), Laver
patent: 3869354 (1975-03-01), Montalvo, Jr.
patent: 3979274 (1976-09-01), Newman
patent: 4005700 (1977-02-01), Parker

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