Surgery – Truss – Perineal
Patent
1977-03-10
1980-05-27
Michell, Robert W.
Surgery
Truss
Perineal
354 62, A61B 106
Patent
active
042045282
ABSTRACT:
Improved method for in situ visual examination of cardiovascular system comprises feeding a catheter having at least one afferent fiber-optic bundle for transmitting light from the proximal end of the catheter to the distal end thereof and at least one efferent fiber-optic bundle for returning light from the distal end to the proximal end, into the cardiovascular system until the distal end is in the vicinity of the region of cardiovascular system to be examined; illuminating the region by illuminating the proximal end of the catheter; injecting a clear physiologically innocuous fluid in front of the distal end of the catheter to increase clarity of blood in the region being examined; and observing the image returned to the proximal end of the efferent fiber-optic bundle. Fiber-optic catheter system and improved catheter for carrying out method are also disclosed.
REFERENCES:
patent: 2940370 (1960-06-01), Yandell
patent: 3162190 (1964-12-01), Del Gizzo
patent: 3583393 (1971-06-01), Takahashi
patent: 3643653 (1972-02-01), Takahashi et al.
patent: 3814081 (1974-06-01), Mori
patent: 3888237 (1975-06-01), Mori
patent: 3903877 (1975-09-01), Terada
patent: 3924608 (1975-12-01), Mitsui
Olympus "EF" Esophago Fiber Scope; Ad. in Medical--Surgical Review, 1st Quarter 1969.
Michell Robert W.
Rose Arthur S.
Zafmedico Corp.
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