Systems and methods for cleaning body cavities

• US 9,895,483 B2
• Filed: 01/11/2011
• Issued: 02/20/2018
• Est. Priority Date: 01/11/2010
• Status: Active Grant

• Current Assignee: Motus Gi Medical Technologies Ltd. (Motus GI Holdings, Inc.)
• Original Assignee: Motus Gi Medical Technologies Ltd. (Motus GI Holdings, Inc.)
• Inventors: Shtul, Boris, Morochovsky, Alexey, Banzger, Alexander, Hassidov, Noam
• Primary Examiner(s): Zalukaeva, Tatyana
• Assistant Examiner(s): Mensh, Andrew J
• Application Number:
  US13/521,061
• Publication Number:
  US 20130296771A1
• Time in Patent Office: 2,597 Days
• Field of Search: 604317, 604318, 604323
• CPC Class Codes: A61B 1/015 Control of fluid supply or evacuation
• CPC Class Codes: A61B 1/04 combined with photographic or television appliances
• CPC Class Codes: A61B 1/122 using cleaning tools, e.g. brushes
• CPC Class Codes: A61B 1/31 for the rectum, e.g. proctoscopes, sigmoidoscopes , colonoscopes
• CPC Class Codes: A61B 17/22012 in direct contact with, or very close to, the obstruction or concrement for removing obstructions in blood vessels by laser A61B18/245
• CPC Class Codes: A61B 17/3207 Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions A61B17/32037 takes precedence; endoscopic cutting instruments A61B17/320016
• CPC Class Codes: A61B 17/320758 with a rotating cutting instrument, e.g. motor driven A61B17/320725, A61B17/32075 and A61B17/320783 take precedence; for removing intra-ocular material A61F9/00763; endoscopic rotatable cutting instruments A61B17/32002
• CPC Class Codes: A61B 2217/005 with suction drainage system
• CPC Class Codes: A61B 2217/007 with irrigation system
• CPC Class Codes: A61F 5/442 having irrigation ports or means irrigators A61M3/02
• CPC Class Codes: A61F 5/445 Colostomy, ileostomy or urethrostomy devices A61F5/441, A61F5/442, A61F5/443 take precedence
• CPC Class Codes: A61M 1/743 by changing the cross-section of the line, e.g. flow regulating valves A61M1/7413 takes precedence
• CPC Class Codes: A61M 1/77 Suction-irrigation systems aspiration tips supplying fluids A61M1/85; specific for negative pressure wound therapy A61M1/92; combined with tracheal tubes A61M16/0463
• CPC Class Codes: A61M 1/777 Determination of loss or gain of body fluids due to suction-irrigation, e.g. during surgery
• CPC Class Codes: A61M 1/85 with gas or fluid supply means, e.g. for supplying rinsing fluids or anticoagulants for negative pressure wound therapy A61M1/92, A61M1/94; combined with tracheal tubes A61M16/0463; dental instruments with combined rinsing and aspirating A61C17/0208
• CPC Class Codes: A61M 16/0463 combined with suction tubes, catheters or the like; Outside connections
• CPC Class Codes: A61M 2025/0019 Cleaning catheters or the like, e.g. for reuse of the device, for avoiding replacement
• CPC Class Codes: A61M 2025/0025 having a collapsible lumen
• CPC Class Codes: A61M 2205/3334 Measuring or controlling the flow rate
• CPC Class Codes: A61M 2205/3344 Measuring or controlling pressure at the body treatment site
• CPC Class Codes: A61M 2205/3389 : Continuous level detection A61M2205/3393 takes precedence
• CPC Class Codes: A61M 2205/3393 : by weighing the reservoir
• CPC Class Codes: A61M 2205/50 : with microprocessors or computers
• CPC Class Codes: A61M 2210/1064 : Large intestine
• CPC Class Codes: A61M 3/0202 : with electronic control means or interfaces
• CPC Class Codes: A61M 3/0208 : before use
• CPC Class Codes: A61M 3/0212 : after use
• CPC Class Codes: A61M 3/0216 : Pressure
• CPC Class Codes: A61M 3/022 : Volume; Flow rate
• CPC Class Codes: A61M 3/0241 : the liquid being supplied by gravity
• CPC Class Codes: A61M 3/0275 : Pulsating jets; Vibrating nozzles
• CPC Class Codes: A61M 3/0283 : with at least two inner passageways, a first one for irrigating and a second for evacuating suction-irrigation systems A61M1/77; aspiration tips with fluid supply means A61M1/85; for negative pressure wound therapy A61M1/92
• CPC Class Codes: A61M 3/0295 : with inflatable balloon
• CPC Class Codes: B08B 9/0436 : provided with mechanical cleaning tools, e.g. scrapers, with or without additional fluid jets B08B9/045, B08B9/047 take precedence
• CPC Class Codes: B08B 9/045 : the cleaning devices being rotated while moved , e.g. flexible rotating shaft or "snake"B08B9/047 takes precedence

Abstract

Systems and methods for cleaning body cavities are presented. Some embodiments reduce size of fecal matter pieces within an evacuation conduit. Some comprise devices and methods for purging an evacuation conduit. Some comprise reduced cross-sectional profiles of a cleaning device. Some protect intestinal tissue by preventing exposure to excessively high and low pressures.

Claims

1. A colon cleaning device, comprising:

an evacuation conduit configured for maneuverability from an anal sphincter at the proximal end of a colon through the curves of a colon to the distal end of said colon, and having a distal receiving aperture configured to receive suction for drawing fecal material from at least a portion of said colon and into a lumen of the evacuation conduit while inserted to said colon; and

a fluid supply channel, having a supply aperture positioned where a pressure differential between the supply aperture and the evacuation conduit lumen induced by the suction changes upon blockage of said receiving aperture; and

wherein the supply aperture position is furthermore external to the evacuation conduit lumen, and near a bypass orifice which is separate from the receiving aperture and providing passage of fecal material from at least one other portion of said colon into the evacuation conduit lumen, into which bypass orifice the change in pressure differential elicits the drawing of fluid exiting said supply aperture, such that a pressure differential across said receiving aperture is reduced.

2. The colon cleaning device of claim 1, wherein said fluid supply channel comprises an irrigation channel, operable by proximally applied pressure to supply fluid exiting said fluid supply channel in a region external to said receiving aperture.

3. The colon cleaning device of claim 1, wherein—

when said blockage occurs—

said pressure differential is reduced to below a level at which damage to an intestinal wall occurs.

4. The colon cleaning device according to claim 1, wherein said supply aperture is in a luminal wall of said evacuation conduit.

5. The colon cleaning device of claim 1, comprising:

a pressure sensor, positioned within said evacuation conduit and near a distal end thereof;

a pressurizing fluid supply for forcing fluid through said fluid supply channel; and

a controller, configured to control delivery of said fluid supply as a function of a measured pressure reported by said sensor.

6. The colon cleaning device of claim 2, wherein said supplied fluid comprises a fluid jet configured to reduce fecal matter size outside said evacuation conduit, wherein said jet is drawn through said evacuation conduit upon said receiving of said suction and upon said blockage of said receiving aperture, such that said pressure differential across said receiving aperture is reduced.

7. The colon cleaning device of claim 1, where said pressure differential is further reduced by closing of a closure mechanism inside said evacuation conduit.

8. The colon cleaning device of claim 2, wherein said closing is activated by the pressure of fluid issuing from said fluid supply channel.

13. The colon cleaning device of claim 1, wherein the length of said evacuation conduit insertable into the colon is between 1 and 2.5 meters.

14. The colon cleaning device of claim 1, wherein the outer diameter of said evacuation conduit fits within a system diameter of between 1 and 2.5 cm.

15. The colon cleaning device of claim 1, wherein being configured for maneuverability through the curves of the colon comprises having a sufficiently reduced cross-section.

16. The colon cleaning device of claim 1, wherein the fluid exiting said fluid supply channel comprises liquid.

17. The colon cleaning device of claim 1, wherein said fluid supply channel comprises an irrigation channel, operable by proximally applied pressure to supply fluid exiting said fluid supply channel into lumen of said colon at a region external to said bypass orifice between an opening of said irrigation channel and said bypass orifice.

18. The colon cleaning device of claim 17, wherein at least a portion of said fluid supplied into said lumen of said colon is drawn into said bypass orifice by said change in pressure differential.

19. The colon cleaning device of claim 1, wherein at least a portion of said fluid supply is drawn from said intestinal lumen into said bypass orifice.

9. A method of preventing damage to an intestinal wall during cleaning, comprising:

applying suction to an evacuation conduit of a colon cleaning device inserted into an intestine via the anal sphincter, the evacuation conduit being of sufficiently reduced cross-section for maneuverability from an anal sphincter at the proximal end of a colon through the curves of a colon to the distal end of said colon;

sucking a portion of the wall of said intestine against a fecal matter receiving aperture of said evacuation conduit;

supplying liquid within said evacuation conduit, the supplied liquid issuing from a distal supply aperture of a fluid supply channel, wherein the distal supply aperture is external to the evacuation conduit, and wherein the fluid supply channel has a proximal connection to a fluid supply source outside said anal sphincter;

the fluid then passing into the evacuation conduit through a bypass aperture separate from the receiving aperture and positioned near an end of the evacuation conduit positioned at the distal end of the colon, to reduce the pressure differential acting on said portion of intestinal wall induced by said suction.

10. The method of claim 9, wherein said supplying of fluid comprises diverting irrigation fluid supplied to a supply aperture outside said evacuation conduit to the inside thereof through a vacuum reduction opening separate from said receiving aperture.

11. The method of claim 9, wherein said supplying of fluid comprises drawing fluid from said supply aperture inside said evacuation conduit, said drawing being in response to said pressure differential.

12. The method of claim 9, wherein said supplying of fluid comprises:

sensing of a pressure change by a sensor located in said evacuation conduit; and

activation by a controller of a pressure source configured to supply said fluid;

wherein

said activation is determined based on said pressure change sensed by said sensor.

20. The colon cleaning device of claim 12, wherein said pressure change sensed by said sensor comprises low pressure in said evacuation conduit.