Efficient continuous flow irrigation system
First Claim
1. A continuous flow irrigation endoscope, comprising:
- a body having a proximal end and a distal end;
an outer tube, wherein at least a portion of the outer tube has a first diameter;
an inner tube located within the outer tube, the inner tube having a second diameter which is smaller than the first diameter, wherein the inner tube further defines within the outer tube a closed cavity within the body of the endoscope, the closed cavity surrounding an entire circumference of the inner tube; and
wherein the endoscope further comprises;
an inflow port formed on an outer circumferential portion of the outer tube at a proximal end thereof and being configured to allow fluid to enter through the outer tube and into the closed cavity;
a plurality of perforations formed on an outer circumferential portion of the outer tube at a distal end thereof and being configured to allow fluid to exit the closed cavity;
an outflow port formed on an outer circumferential portion of the inner tube at a proximal end thereof and being configured to allow fluid and/or tissue debris to exit the body of the endoscope through the inner tube;
wherein a cross-sectional area of the outflow port is equal to a cross-sectional area of the inner tube,wherein a cross-sectional area of the outflow port is equal to a cross-sectional area of a distally located opening being in communication with the outflow port, and wherein the inner and the outer tubes touch each other at their distal most ends, the distally located opening representing openings of both the tubes at a position where the tubes make a fluid tight contact with each other, andwherein the inner channel accommodates an optical channel.
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Abstract
A continuous flow irrigation endoscope and a continuous flow irrigation fluid management system, both designed to be compatible to each other and meant to function as a single system. The endoscope and the fluid management system are synergistic to each other such that both enhance the efficiency of each other. The system allows a body tissue cavity to be distended by continuous flow irrigation so that the detached tissue pieces and waste fluid present inside a body tissue cavity are continuously automatically evacuated from the tissue cavity without causing the cavity to collapse at any stage and without the need of withdrawing the endoscope or a part of the endoscope from the tissue cavity.
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Citations
14 Claims
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1. A continuous flow irrigation endoscope, comprising:
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a body having a proximal end and a distal end;
an outer tube, wherein at least a portion of the outer tube has a first diameter;
an inner tube located within the outer tube, the inner tube having a second diameter which is smaller than the first diameter, wherein the inner tube further defines within the outer tube a closed cavity within the body of the endoscope, the closed cavity surrounding an entire circumference of the inner tube; and
wherein the endoscope further comprises;an inflow port formed on an outer circumferential portion of the outer tube at a proximal end thereof and being configured to allow fluid to enter through the outer tube and into the closed cavity; a plurality of perforations formed on an outer circumferential portion of the outer tube at a distal end thereof and being configured to allow fluid to exit the closed cavity; an outflow port formed on an outer circumferential portion of the inner tube at a proximal end thereof and being configured to allow fluid and/or tissue debris to exit the body of the endoscope through the inner tube; wherein a cross-sectional area of the outflow port is equal to a cross-sectional area of the inner tube, wherein a cross-sectional area of the outflow port is equal to a cross-sectional area of a distally located opening being in communication with the outflow port, and wherein the inner and the outer tubes touch each other at their distal most ends, the distally located opening representing openings of both the tubes at a position where the tubes make a fluid tight contact with each other, and wherein the inner channel accommodates an optical channel. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A continuous flow irrigation system, comprising:
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a resectoscope-based endoscope comprising;
the endoscope comprising a body having a proximal end and a distal end;
an outer tube, wherein at least a portion of the outer tube has a first diameter;
an inner tube located within the outer tube, the inner tube having a second diameter which is smaller than the first diameter, wherein the inner tube further defines within the outer tube a closed cavity within the body of the endoscope, the closed cavity surrounding an entire circumference of the inner tube; and
wherein the endoscope further comprises;an inflow port formed on an outer circumferential portion of the outer tube at a proximal end thereof and being configured to allow fluid to enter through the outer tube and into the closed cavity; a plurality of perforations formed on an outer circumferential portion of the outer tube at a distal end thereof and being configured to allow fluid to exit the closed cavity; an outflow port formed on an outer circumferential portion of the inner tube at a proximal end thereof and being configured to allow fluid and/or tissue debris to exit the body of the endoscope through the inner tube; wherein a cross-sectional area of the outflow port is equal to a cross-sectional area of the inner tube, wherein a cross-sectional area of the outflow port is equal to a cross-sectional area of a distally located opening being in communication with the outflow port, and wherein the inner and the outer tubes touch each other at their distal most ends, the distally located opening representing openings of both the tubes at a position where the tubes make a fluid tight contact with each other, an inflow pump connected to the inflow port of the resectoscope-based endoscope; and an outflow pump connected to the outflow port of the resectoscope-based endoscope. - View Dependent Claims (9, 10, 11)
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12. A continuous flow irrigation system for an endoscopic procedure, the system comprising:
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an endoscope comprising;
the endoscope comprising a body having a proximal end and a distal end;
an outer lumen, wherein at least a portion of the outer lumen has a first diameter;
an inner lumen located within the outer lumen, the inner lumen having a second diameter which is smaller than the first diameter, wherein the inner lumen further defines, within the outer lumen, a closed cavity within the body of the endoscope, the closed cavity surrounding an entire circumference of the inner lumen; and
wherein the endoscope further comprises;an inflow port formed on an outer circumferential portion of the outer lumen at a proximal end thereof and being configured to allow fluid to enter through the outer lumen and into the closed cavity; a plurality of perforations formed on an outer circumferential portion of the outer lumen at a distal end thereof and being configured to allow fluid to exit the closed cavity; an outflow port formed on an outer circumferential portion of the inner lumen at a proximal end thereof and being configured to allow fluid and/or tissue debris to exit the body of the endoscope through the inner lumen; wherein a cross-sectional area of the outflow port is equal to a cross-sectional area of the inner lumen, wherein a cross-sectional area of the outflow port is equal to a cross-sectional area of a distally located opening being in communication with the outflow port, and wherein the inner and the outer lumens touch each other at their distal most ends, the distally located opening representing openings of both the lumens at a position where the lumens make a fluid tight contact with each other, and wherein the inner channel accommodates an optical channel a first peristaltic pump connecting a fluid source reservoir to the inflow port of the endoscope via an inflow tube; a second peristaltic pump connecting a waste fluid reservoir to the outflow port of the endoscope; and a tube having a controllable constriction site provided between the fluid source reservoir and the inflow port of the endoscope, the tube providing a route for any excess fluid being pumped by the first peristaltic pump to bypass the first peristaltic pump. - View Dependent Claims (13, 14)
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Specification