Machida Endoscope Co., Ltd.

Riken Corporation

Katsuo Aizawa

Yuichi Komachi

Atsushi Utsumi

Hideo Tashiro

Shin Ishimaru

Hidetoshi Sato

Tsuneyuki Nagae

A Raman probe for measuring Raman spectrum includes an exciting-end light guiding path for guiding excitation light from a light source to a sample; a receiving light-guide path for guiding a light signal from said sample to a detector; a band-pass filter for passing said excitation light and blocking Raman-scattered light produced from said exciting-end light guiding path; a pipe for securing said band-pass filter inside said pipe, said pipe being mounted on a light-outgoing end of said exciting-end light guiding path; and an edge filter mounted on a light-incident end of said receiving light-guide path, said edge filter passing Raman-scattered light from said sample while blocking the excitation light. The edge filter is a short-wavelength transmitting filter that permits passage of wavelengths shorter than the excitation wavelength.

Raman probe and Raman spectrum measuring apparatus utilizing the same

An analysis system comprises an endoscope 10 insertable into the vessel and a Raman analysis apparatus 40. An insert cable 54 of the Raman analysis apparatus 40 is inserted into a channel 10of the endoscope 10. An excitation optical fiber 60 and a bundle 70A of a plural number of light receivingoptical fibers 70 are received in the insert cable 54. A transparent small piece 63 having a film-like excitation optical filter 64 is abutted against the distal end of the fiber 60. A transparent plate 71 having a film-like light reciving optical filter 72 is abutted against the distal end of fibers bundle 70A. The plate 71 has a center hole 71and the piece 63 is fitted into the hole 71.

Analysis system of matter adhered to inside wall of vessel

A hollow optical fiber has an intermed ate dielectric layer interposed between an inner periphery side dielectric layer facing a hollow core portion and a metal layer The inner periphery side dielectric layer is formed of calcium fluoride. The intermediate dielectric layer is formed of yttrium fluoride. Metal of the metal layer can be prevented from dispersing into the dielectric layers by the intermediate dielectric layer formed of yttrium fluoride. The hollow optical fiber is manufactured by vapor depositing calcium fluoride on an outer peripheral surface of an acid-soluble glass tube (base material), then vapor depositing yttrium fluoride on its outer peripheral surface, then vapor depositing a metal layer formed of silver, gold or the like on its outer peripheral surface, and thereafter, dissolving the glass tube with acid.

Hollow optical fiber and method for manufacturing the same

An endoscope apparatus has a side view endoscope for side viewing an object in a radial direction of a distal end constitutional portion and a balloon catheter . With an insert portion of a side view endoscope inserted in an insert tube of the balloon catheter , the balloon catheter is inserted into a blood vessel B. The insert tube is provided at its distal end with a transparent balloon . This balloon encloses the distal end constitutional portion . By feeding air (fluid) to this balloon , the balloon is expanded so as to be urged against an inside wall of the blood vessel B. This causes the blood to be discharged between the inside wall of the blood vessel B and the balloon , thus enabling to observe the inside wall of the blood vessel B through the side view endoscope

Growing community of inventors

Kanagawa, Japan

Katsuo Aizawa