4-way cystoscopy catheter

摘要

Systems and methods of cannulating a body orifice such as a bladder are disclosed. A cystoscopy catheter can include a proximal end, a distal end having at least one exit port, and a flexible elongate tubular body therebetween; an inflatable balloon near the distal end of the catheter, the balloon transformable from an unexpanded and an expanded configuration; a first proximal port for fluid inflow; a second proximal port for fluid outflow; a third proximal port for balloon inflation, in fluid connection with the balloon; and a fourth proximal port for insertion of a diagnostic and/or therapeutic instrument such as a cystoscope therethrough, wherein the first, second, and fourth proximal ports are fluidly connected to a common central lumen extending through the elongate tubular body to the exit port on the distal end.

主权项

1. An indwelling cystoscopy catheter, comprising:
a proximal end, a distal end having at least one exit port, and a flexible elongate tubular body therebetween; an inflatable balloon near the distal end of the catheter, the balloon transformable from an unexpanded to an expanded configuration, wherein the balloon in its expanded configuration comprises a low profile oblong shape suitable for anchoring within a human bladder, the low profile oblong shape comprising a first dimension in a radial direction that is at least about 1.5× of a second dimension in an axial direction, and wherein the balloon is sized and positioned sufficiently close to a distal tip of the distal end of the catheter to enable a cystoscope protruding from the distal tip to view ureter openings of the bladder, the balloon positioned such that an axial length from a distal end of the balloon in its expanded configuration to the distal tip of the distal end of the catheter is no greater than ⅕ of an axial length from a proximal end of the balloon in its expanded configuration to the distal tip of the distal end of the catheter; a first proximal port for fluid inflow; a second proximal port for fluid outflow; a third proximal port for balloon inflation, in fluid connection with the balloon; and a fourth proximal port for insertion of a cystoscope therethrough, the fourth proximal port aligned coaxially with the flexible elongate tubular body, the fourth proximal port including a sealing member therein, the sealing member configured to seal against an outer shaft surface of the cystoscope to prevent proximal backflow of fluid when the cystoscope is inserted therethrough, the sealing member further configured to self-seal to prevent proximal backflow of fluid when the cystoscope is not inserted therethrough, wherein the first, second, and fourth proximal ports are fluidly connected to a common central lumen extending through the elongate tubular body to the exit port on the distal end of the catheter.