EP-4736795-A2 - FLUID MANAGEMENT SYSTEM WITH INTEGRATED LASER FIBER COOLING

Abstract

A medical system may include: a medical device including an elongate shaft configured to access a treatment site within a patient and a handle coupled to a proximal end of the elongate shaft; a laser device including an elongate tubular member configured for insertion through a working lumen of the medical device, the elongate tubular member including a cooling channel and a laser fiber extending distally within the cooling channel; and a fluid management system including an inflow pump configured to pump fluid from a first fluid supply source through the elongate shaft to the treatment site, a cooling pump configured to pump fluid from a second fluid supply source through the cooling channel, and a controller configured to control the inflow pump and the cooling pump.

Inventors

• MAHER, Michelle
• SMITH, LEE
• STANHOPE, William
• KHATTAR, Nishant
• WONG, ERIC
• RAUNIYAR, Niraj Prasad
• ERNSTER, Logan

Assignees

• Boston Scientific Scimed, Inc.

Dates

Publication Date

20260506

Application Date

20210729

Claims (14)

1. A medical system, comprising: a medical device (20) comprising: an elongate shaft (76) configured to access a treatment site within a patient; and a handle coupled to a proximal end of the elongate shaft, the handle including a port (86) in fluid communication with a working lumen of the elongate shaft; wherein the medical device (20) is an endoscope; a laser device (100) including an elongate tubular member (116) configured for insertion through the working lumen of the medical device, the elongate tubular member including a cooling channel (128) and a laser fiber (114) extending distally within the cooling channel; and a fluid management system (10) comprising: an inflow pump (50) configured to pump fluid through the elongate shaft to the treatment site; a cooling pump (53) configured to pump fluid through the cooling channel; and a controller (30) configured to control the inflow pump and the cooling pump; wherein the cooling channel (128) is used to provide liquid cooling of the laser fiber (114).
2. The medical system of claim 1, wherein the laser device includes a laser controller (110) in electronic communication with the controller of the fluid management system.
3. The medical system of claim 2, wherein when the laser controller increases laser power, the controller of the fluid management system speeds up the cooling pump.
4. The medical system of any one of claims 2-3, wherein when the laser controller terminates laser power, the controller of the fluid management system shuts down the cooling pump.
5. The medical system of any one of claims 2-4, wherein the laser controller delays activation of laser power until after the controller of the fluid management system activates the cooling pump.
6. The medical system of any one of claims 2-5, wherein the laser controller monitors a temperature of a distal end of the laser fiber and instructs the controller of the fluid management system to increase cooling pump speed if the temperature exceeds a predetermined limit.
7. The medical system of any one of claims 1-6, wherein the medical device includes a pressure sensor at a distal tip of the elongate shaft to measure intracavity pressure within the treatment site.
8. The medical system of any one of claims 1-7, wherein the medical device includes a temperature sensor to provide intracavity temperature feedback to the fluid management system.
9. The medical system of any one of claims 1-8, further comprising a workstation (81); wherein the medical device (20) is in electronic communication with the workstation (81); and wherein the workstation (81) is configured with a wired or wireless communication connection (91) with the controller (30) of the fluid management system (10).
10. The medical system of any one of claims 1-9, wherein the cooling pump is a peristaltic pump, a diaphragm pump, or a positive displacement pump.
11. The medical system of any one of claims 1-10, wherein the cooling pump includes a disposable, single-use pump head.
12. The medical system of any one of claims 1-11, wherein the cooling channel surrounds the laser fiber.
13. The medical system of claim 12, wherein the cooling channel terminates at a distal port (140) proximal a distal end of the elongate tubular member.
14. The medical system of claim 13, wherein laser energy exits the elongate tubular member through the distal port.

Description

CROSS REFERENCE TO RELATED APPLICATIONS This application claims the benefit of and priority to U.S. Provisional Patent Application Serial No. 63/058,687 filed on July 30, 2020, the disclosure of which is incorporated herein by reference. TECHNICAL FIELD The disclosure is directed to a fluid management system. More particularly, the disclosure is directed to a system and method for cooling a laser fiber with a fluid management system. BACKGROUND Flexible ureteroscopy (fURS), gynecology, and other endoscopic procedures require the circulation of fluid for several reasons. Surgeons today deliver the fluid in various ways such as, for example, by hanging a fluid bag and using gravity to deliver the fluid, filling a syringe and manually injecting the fluid or using a peristaltic pump to deliver fluid from a reservoir at a fixed pressure or flow rate via a fluid management system. Fluid management systems may adjust the flow rate and/or pressure at which fluid is delivered from the reservoir based on data collected from a procedural device, such as, but not limited to, an endoscope. Of the known medical devices, systems, and methods, each has certain advantages and disadvantages. There is an ongoing need to provide alternative medical devices and fluid delivery systems. SUMMARY In a first example, a medical system may comprise: a medical device comprising an elongate shaft configured to access a treatment site within a patient, and a handle coupled to a proximal end of the elongate shaft; a laser device including an elongate tubular member configured for insertion through a working lumen of the medical device, the elongate tubular member including a cooling channel and a laser fiber extending distally within the cooling channel; and a fluid management system comprising an inflow pump configured to pump fluid from a first fluid supply source through the elongate shaft to the treatment site, a cooling pump configured to pump fluid from a second fluid supply source through the cooling channel, and a controller configured to control the inflow pump and the cooling pump. In addition or alternatively to any example disclosed herein, the cooling pump is a peristaltic pump. In addition or alternatively to any example disclosed herein, the cooling pump is a diaphragm pump. In addition or alternatively to any example disclosed herein, the cooling pump is a positive displacement pump. In addition or alternatively to any example disclosed herein, the cooling pump includes a disposable, single-use pump head. In addition or alternatively to any example disclosed herein, the fluid management system includes a pressure sensor disposed between the cooling pump and a distal end of the cooling channel. In addition or alternatively to any example disclosed herein, the fluid management system includes a pressure sensor disposed between the second fluid supply source and the cooling pump. In addition or alternatively to any example disclosed herein, the cooling pump is configured to pump fluid through the cooling channel at a fluid flow rate between 0 mL/minute and 100 mL/minute. In addition or alternatively to any example disclosed herein, the cooling pump is configured to pump fluid through the cooling channel at a fluid pressure between 0 mmHg and 500 mmHg. In addition or alternatively to any example disclosed herein, and in a second example, a medical system may comprise: a medical device comprising an elongate shaft configured to access a treatment site within a patient, and a handle coupled to a proximal end of the elongate shaft; a laser device including an elongate tubular member configured for insertion through a working lumen of the medical device, the elongate tubular member including a cooling channel and a laser fiber extending distally within the cooling channel; and a fluid management system comprising an inflow pump configured to pump fluid from a first fluid supply source through the elongate shaft to the treatment site, a cooling pump configured to pump fluid from a second fluid supply source through the cooling channel, and a controller configured to control the inflow pump and the cooling pump. The laser device may include a laser controller in electronic communication with the controller of the fluid management system. In addition or alternatively to any example disclosed herein, when the laser controller increases laser power, the controller of the fluid management system speeds up the cooling pump. In addition or alternatively to any example disclosed herein, when the laser controller terminates laser power, the controller of the fluid management system shuts down the cooling pump. In addition or alternatively to any example disclosed herein, the laser controller delays activation of laser power until after the controller of the fluid management system activates the cooling pump. In addition or alternatively to any example disclosed herein, the laser controller monitors a temperature of a distal end of the laser