Devices and methods for cleaning contaminated body cavities
View Patent ↗Provided is a method of cleaning a body cavity using a device by coupling a distal end portion of a first cannula to the housing such that a lumen is in fluid communication with the first portion of the inner volume, the first cannula coupled to a vacuum source, then coupling a distal end portion of a second cannula to the housing such that a lumen is in fluid communication with the second portion of the inner volume, the second cannula being coupled to a fluid source, inserting a portion of the housing into a body cavity, conveying a fluid from the fluid source to the body cavity via the lumen of the second cannula, and withdrawing the fluid from the body cavity into the vacuum source concurrently with the conveying the fluid, via the lumen of at least the first cannula.
1 . An apparatus, comprising:
a housing having a proximal end portion and a distal end portion and defining an inner volume, the housing defining a first plurality of openings in fluid communication with a first portion of the inner volume and a second plurality of openings in fluid communication with a second portion of the inner volume, the first portion of the inner volume being fluidically isolated from the second portion of the inner volume;
a proximal seal member disposed at least partially within the housing, the proximal seal member having a first coupling portion and a second coupling portion;
a first cannula having a proximal end portion and a distal end portion and defining a lumen therethrough, the proximal end portion of the first cannula configured to be placed in fluid communication with a vacuum source, the distal end portion of the first cannula coupled to a first opening of the first coupling portion of the proximal seal member such that the first portion of the inner volume and the lumen of the first cannula collectively define a fluid flow path between the first plurality of openings and the vacuum source;
a second cannula having a proximal end portion and a distal end portion and defining a lumen therethrough, the proximal end portion of the second cannula configured to be placed in fluid communication with a fluid source, the distal end portion of the second cannula coupled to a first opening of the second coupling portion of the proximal seal member;
a first conduit disposed within the inner volume and coupled to the first coupling portion of the proximal seal member, the first conduit defining a lumen configured to place the lumen of the first cannula in fluid communication with the first portion of the inner volume;
a second conduit disposed within the inner volume coupled to the second coupling portion of the proximal seal member, the second conduit defining a lumen configured to place the lumen of the second cannula in fluid communication with the second portion of the inner volume, wherein a first end portion of the first conduit is in contact with an inner surface of the housing to collectively define a substantially fluid tight seal therebetween, and a first end portion of the second conduit is in contact with the inner surface of the housing to collectively define a substantially fluid tight seal therebetween, the first portion of the inner volume is defined between the first end portion of the first conduit and the first end portion of the second conduit; and
an inner volume conduit disposed within the first portion of the inner volume, the inner volume conduit defining a lumen in fluid communication with the second portion of the inner volume and the lumen of the second cannula such that the second portion of the inner volume and the lumen of the inner volume conduit and the lumen of the second cannula collectively define a fluid flow path between the second plurality of openings and the fluid source.
2 . The apparatus of claim 1 , wherein the housing encloses the first conduit and the second conduit.
3 . The apparatus of claim 1 , further comprising a flange configured to move along a longitudinal centerline of the housing from a first position to a second position, the first plurality of openings and the second plurality of openings being distal to the flange when the flange is in the first position and the second position.
4 . The apparatus of claim 3 , wherein the flange and the housing are joined by a threaded coupling and the flange is configured to rotate about the housing to advance the flange along the longitudinal centerline of the housing from the first position to the second position.
5 . The apparatus of claim 1 , further comprising:
a first flow control mechanism disposed about a portion of the first cannula and configured to transition from a first configuration to a second configuration to fluidically isolate the vacuum source from the first portion of the inner volume;
a second flow control mechanism disposed about a portion of the second cannula and configured to transition from a first configuration to a second configuration to fluidically isolate the fluid source from the second portion of the inner volume.
6 . The apparatus of claim 1 , wherein the housing comprises a solid distal tip configured to be inserted into a distal opening to form a friction fit.
7 . The apparatus of claim 1 , further comprising a handle to facilitate single handed use of the device.
8 . The apparatus of claim 7 , wherein the handle further includes a first port and a second port, the first port extending from the handle and defining a lumen, the second port in fluid communication with a second conduit disposed within the housing, the second port configured to be fluidically coupled to the second cannula.
9 . The apparatus of claim 1 , wherein the distal end portion of the housing includes a continuous distal surface having a rounded or curved shape to prevent the housing from damaging tissue during use.
10 . The apparatus of claim 1 , wherein the distal end portion of the housing comprises material which allows the housing to deform.
11 . The apparatus of claim 1 , wherein the proximal end portion of the second cannula is configured to be coupled to a reservoir.
12 . The apparatus of claim 1 , wherein the proximal end portion of the first cannula is configured to be coupled to the vacuum source via an intervening structure.
13 . The apparatus of claim 1 , wherein the proximal end portion of the second cannula is configured to be coupled to the fluid source via an intervening structure.
14 . The apparatus of claim 1 , wherein the fluid source includes a pump and a reservoir, the reservoir configured to contain a sterile fluid and the pump configured to increase a pressure of a predetermined volume of the sterile fluid.
15 . The apparatus of claim 1 , wherein the vacuum source is configured to produce a suction force within the lumen of the first cannula.
16 . The apparatus of claim 15 , wherein the suction force is configured to draw matter and fluid into the first portion of the inner volume.
17 . The apparatus of claim 1 , wherein an arrangement of the housing corresponds to an anatomical structure of a lower gastrointestinal tract.
18 . An apparatus, comprising:
a housing defining an inner volume, the inner volume having a first portion of the inner volume fluidically isolated from a second portion of the inner volume;
a proximal seal member disposed at least partially within the housing, the proximal seal member having at least a first opening and a second opening;
a first cannula having a proximal end portion and a distal end portion and defining a first lumen, the proximal end portion of the first cannula configured to be placed in fluid communication with a vacuum source, the distal end portion of the first cannula configured to be coupled to the first opening of the proximal seal member such that the first lumen is in fluid communication with the first portion of the inner volume;
a second cannula having a proximal end portion and a distal end portion and defining a second lumen, the proximal end portion of the second cannula configured to be placed in fluid communication with a fluid source, the distal end portion of the second cannula configured to be coupled to the second opening of the proximal seal member;
a first conduit disposed within the inner volume and coupled to a first coupling portion of the proximal seal member, the first conduit defining a lumen configured to place the lumen of the first cannula in fluid communication with the first portion of the inner volume;
a second conduit disposed within the inner volume coupled to a second coupling portion of the proximal seal member, the second conduit defining a lumen configured to place the lumen of the second cannula in fluid communication with the second portion of the inner volume, wherein a first end portion of the first conduit is in contact with an inner surface of the housing to collectively define a substantially fluid tight seal therebetween, and a first end portion of the second conduit is in contact with the inner surface of the housing to collectively define a substantially fluid tight seal therebetween, the first portion of the inner volume is defined between the first end portion of the first conduit and the first end portion of the second conduit; and
an inner volume conduit disposed within the first portion of the inner volume, the inner volume conduit defining a third lumen in fluid communication with the second lumen and the second portion of the inner volume such that the second lumen and the third lumen define an extended lumen that is in fluid communication with the second portion of the inner volume and the fluid source.
19 . The apparatus of claim 18 , wherein the housing encloses the first conduit and the second conduit.
20 . The apparatus of claim 18 , wherein the distal end portion of the housing includes a continuous distal surface having a rounded or curved shape to prevent the housing from damaging tissue during use.