Two New Types of Cystoscopic Forceps for Versatile Fluorescence Cystoscope

Vol. 114, November Printed in U.S.A.

THE JOURNAL OF UROLOGY

Copyright © 1975 by The Williams & Wilkins Co.

TWO NEW TYPES OF CYSTOSCOPIC FORCEPS FOR VERSATILE FLUORESCENCE CYSTOSCOPE lWAO NAKANO, ROKURO KOIKE*

AND

YASUYUKI YONASE

From the Departments of Urology, National Medical Center Hospital, Toyama-cho, Shinjuku-ku, Tokyo. Kyorin Uniuersit_v School of }dedicine, S'hinkawa, lvlitaka-shi, Tokyo and Jichi lvledical School) lviinarriil'?ochi-mach( Koc.hi-gun, T'ochigi-hen, ~Japarl

In 197 4 Koike 1 on fl uorescence cystoscope in ~lvhich thE excitation spectrurn is rnore than 100 tin1es than the conventional fluoresc,snce cysroscope described and associates in 1966. 2 The excitation spectrum makes the ing the fluorescence in the tumor. On the other Yonase has tumar (fig. contains an electrode on l side of the spoon-shaped sharp When the tumor is hooked it is pulled and the surrounding mucosa is cut out the electrode. This is suitable for biopsy of a stalked men will contain useless tissue. The specimen inside the jaws is not influenced the coagulation heat. The advantage of this 1s that bleeding is prevented by the coagulation despite the of a large specimen. For of an initial or in situ bladder tumor, conventional nase's because surface of the tumor, hook-pull-cut

FIO. 2. Nakano's cystoscopic hook-pull-cut forceps

APPARATL~

Nakano has developed a cystoscopic hook-pullcut forceps, which contains a curved needle like a for of a fishing hook and 2 occluding flat tumor (fig. 2). Marked mucosa is hooked and pulled the curved needle and cut by the occluding edges. Enough specimen for examination (1 by 3 mm.) can be taken almost without any bleeding this cold punch. biopsy of papillary tumors, except for a small one, is sible because the papillary tumor cannot be pulled by the curved needle. Koike has developed a hook-pullelectroresection forceps, incorporating the advantages of Nakano's and Yonase's :3). This contains a curved needle and an electrode on 1 side of the which are shorter than Nakano's to enable the of tumor on the trigone and large Moreover, the curved needle of this can be detached to enable the of all types of tumors. Accepted for publication J1.E1e- 2'1 for Ieprlnts · 1-

F1c. L '{onase's cystoscopic pull-electroresection forceps.

Bunkyo-ku,

FIO. 3. Koike's cystoscopic hook-pull-electroresection forceps.

REFEXENCES

L Koike, li..: A nevv apparatus with interchangeable lens groups for fluorescence cystoscopy, photography, biopsy and coagulation . lJrcl.. l lL 3L 1974. '2. Quint.. ~-I .. Hstt . .]. H. and VVa.llace, F . . . Flu.ores-

T. lJr:JL,

'208, 1966.