Urethral profilometry catheter

Details Urethral profilometry catheter Urethral profilometry catheter

1976-04-05

1978-02-14

Michell, Robert W.

Surgery

Truss

Perineal

128 2S, 128 205D, 128 21E, 128 21M, 128349R, 128404, A61B 510

Patent

active

040732878

ABSTRACT:
A catheter for performing urethral profilometry, and a method of making same, are provided herein. The catheter preferably comprises an elongated tubular body portion provided with a plurality of circumferentially spaced apart orifices for discharging fluid and a pair of flushly mounted flexible electrodes for sensing urethral electrical signals. A pair of electrical conductors connected to the electrodes deliver urethral signals externally of the catheter.
A method disclosed herein for providing a catheter with flexible electrodes comprises the steps of mixing powdered silver with a medical grade adhesive and a solvent, and afterwards forming the electrodes in the desired shape. Evaporation of the solvent concurrently with curing of the adhesive yields a permanently affixed flexible electrode. A method of providing fluid discharge orifices disclosed herein comprises the steps of placing the catheter coaxially within a rigid tool having a plurality of predrilled orifices provided therein, soaking the catheter in xylene or the like, and then drilling the catheter through the predrilled orifices to form fluid discharge holes of constant predetermined diameter.

REFERENCES:
patent: 1989282 (1935-01-01), Kimble et al.
patent: 3480003 (1969-11-01), Crites
patent: 3533403 (1970-10-01), Woodson
patent: 3606881 (1971-09-01), Woodson
patent: 3680544 (1972-08-01), Shinnick et al.
patent: 3920003 (1975-11-01), Ash et al.
patent: 3995623 (1976-12-01), Blake et al.
USCI Cardiovasular Electrodes, . . . Catheters, Jun. 1974, pp. 1-12.

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