The invention generally relates to removal of ingested material from a stomach.
Obesity is a major health problem in the United States and other countries. The National Health and Nutrition Examination Survey (1988-1994) reported that approximately 20-25% of Americans are obese, while another study estimated the percentage of overweight Americans to be between 60% and 65% (Flegal K M, Carroll M D, Ogden C L, Johnson C L “Prevalence and trends in obesity among US adults, 1999-2000” JAMA 2002; 288:1723-1727). Obesity can cause numerous health problems, including diabetes, degenerative joint disease, hypertension, and heart disease. Weight reduction can be achieved by increased caloric expenditure through exercise and/or by reduced caloric consumption through diet. However, in most cases, weight gain often recurs and improvements in related co-morbidities are often not sustained.
Surgical procedures present an increasingly common solution for obese patients. Surgical procedures include, for example, stapled gastroplasty, banded gastroplasty, gastric banding, gastric bypass surgery, and bilopancreatic bypass. However, these surgical procedures are invasive, risky and expensive to perform, and many patients regain a substantial portion of the lost weight.
The use of a gastrostomy to drain a portion of ingested food is an alternative to these procedures for weight loss management. Upon installation, one end of the gastrostomy tube will reside within the stomach with the other end passing through the abdominal wall outside of the body. A low-profile valve which rests against the surface of the skin of the abdomen is typically fitted to the external end of the gastrostomy tube to prevent the inadvertent discharge of the contents of the stomach and to prevent inadvertent pulling of the tube inside the stomach.
Typically a fluid, such as water is infused into the stomach to improve the flow of partially digested material out of the stomach through the gastrostomy tube. While a simple drain tube may be connected to the external end of the gastrostomy tube to partially drain the contents of the stomach after a meal therefore reducing the amount of food which is digested, in practice, this simple approach is unsatisfactory. Often, less than the desired portion of the ingested food can be drained before the gastrostomy tube clogs with partially digested food. In practice, a fluid, typically water, is infused through the discharge end of the gastrostomy tube to clear any clogs and further dilute the contents of the stomach so that additional partially digested food may be drained.
Various devices have been used to allow the user to alternately switch between draining the stomach, unclogging the gastrostomy tube, or diluting the contents of the stomach more quickly and efficiently without disconnecting the drain tube. However, the devices described in prior art for draining material from the stomach and infusing fluid into the stomach allow the drained material from the stomach to pass directly through the apparatus. This makes it difficult to thoroughly clean the malodorous stomach discharge from the apparatus. It also makes it difficult to visually identify a clog within the apparatus itself. Additionally, it is desirable that the process of clearing a clogged gastrostomy tube and diluting the partially digested food can be performed quickly with little physical exertion. The present invention is directed to overcoming some of these deficiencies.
In one embodiment, an apparatus for draining material from a stomach and infusing fluid into the stomach comprises a connector, a housing unit, and a one-way valve. The connector can have a first port, a second port, a third port and a branched lumen that extends through each of the first, second and third ports. The housing unit can have a housing lumen that is sized and shaped to receive the third port. In some embodiments, the housing unit can further have a slot that is sized and shaped to receive the connector. The one-way valve can be sized and shaped to be received in the housing lumen.
In another embodiment, an apparatus for draining material from a stomach and infusing fluid into the stomach comprises a tubing set, a fluid reservoir, and a housing unit to connect the fluid reservoir to the tubing set. The tubing set includes a connector that has three ports and a branched lumen which connects all of the ports. The fluid reservoir consists of a deformable container which when squeezed ejects fluid from the reservoir. The housing has a housing lumen which connects the third port of the connector to the fluid container through a one-way valve and a means to occlude the fluid flow out of the first fluid port of the connector.
Methods of assembling an apparatus for draining material from a stomach and infusing fluid into the stomach are also disclosed. In one embodiment a connector is removed from a housing unit, the connector defining a first port, a second port, and a branched lumen, and the housing unit defining a housing lumen. A first tube can be connected to the first port and a second tube can be connected to the second port. The connector assembly can then be fit into the housing unit such that the housing lumen and branched lumen together form a fluid conduit, and an interface between the housing unit and the connector forms a fluid tight seal.
Methods of cleaning an apparatus for draining material from a stomach are also disclosed. In one embodiment a connector can be engaged to a housing unit. The connector can define a first port, a second port, a third port and a branched lumen. The branched lumen can have a first arm that extends through the first port, a second arm that extends through the second port and a third arm that extends through the third port. The housing unit can define a housing lumen; wherein the engaging causes the branched lumen and the housing lumen together to form a fluid conduit and causes an interface between the housing unit and the connector to form a fluid tight seal. A first tube can be occluded, the first tube defining a first tube lumen. The first tube can be engaged to the first port of the connector and the first tube lumen and the branched lumen together can form a first fluid path. A fluid reservoir having an outlet and containing a fluid can be engaged to the housing unit such that the outlet and housing lumen together form a reservoir fluid pathway. A first pressure can be exerted on the fluid reservoir, causing fluid to flow from the fluid reservoir and through the conduit. The occlusion can be removed from the first tube. A second pressure can be exerted on the fluid reservoir, wherein the second pressure on the fluid reservoir causes fluid to flow from the fluid reservoir, and through the outlet, the reservoir fluid pathway, the fluid conduit and the first tube.
The foregoing summary, as well as the following detailed description will be better understood when read in conjunction with the appended drawings. For the purpose of illustrating the subject matter, there are shown in the drawings exemplary embodiments of the subject matter; however, the presently disclosed subject matter is not limited to the specific methods, devices, and systems disclosed. In addition, the drawings are not necessarily drawn to scale. In the drawings:
The present invention may be understood more readily by reference to the following description taken in connection with the accompanying Figures and Examples, all of which form a part of this disclosure. It is to be understood that this invention is not limited to the specific products, methods, conditions or parameters described and/or shown herein, and that the terminology used herein is for the purpose of describing particular embodiments by way of example only and is not intended to be limiting of any claimed invention. Similarly, unless specifically otherwise stated, any description as to a possible mechanism or mode of action or reason for improvement is meant to be illustrative only, and the invention herein is not to be constrained by the correctness or incorrectness of any such suggested mechanism or mode of action or reason for improvement. Throughout this text, it is recognized that the descriptions refer both to the features and methods of making and using apparatuses for removal of material from a stomach, as well as the apparatuses themselves, and vice versa.
In the present disclosure the singular forms “a,” “an,” and “the” include the plural reference, and reference to a particular numerical value includes at least that particular value, unless the context clearly indicates otherwise. Thus, for example, a reference to “a material” is a reference to at least one of such materials and equivalents thereof known to those skilled in the art, and so forth.
When a value is expressed as an approximation by use of the descriptor “about,” it will be understood that the particular value forms another embodiment. In general, use of the term “about” indicates approximations that can vary depending on the desired properties sought to be obtained by the disclosed subject matter and is to be interpreted in the specific context in which it is used, based on its function. The person skilled in the art will be able to interpret this as a matter of routine. In some cases, the number of significant figures used for a particular value may be one non-limiting method of determining the extent of the word “about.” In other cases, the gradations used in a series of values may be used to determine the intended range available to the term “about” for each value. Where present, all ranges are inclusive and combinable. That is, references to values stated in ranges include every value within that range.
It is to be appreciated that certain features of the invention which are, for clarity, described herein in the context of separate embodiments, may also be provided in combination in a single embodiment. That is, unless obviously incompatible or specifically excluded, each individual embodiment is deemed to be combinable with any other embodiment(s) and such a combination is considered to be another embodiment. Conversely, various features of the invention that are, for brevity, described in the context of a single embodiment, may also be provided separately or in any sub-combination. It is further noted that the claims may be drafted to exclude any optional element. As such, this statement is intended to serve as antecedent basis for use of such exclusive terminology as “solely,” “only” and the like in connection with the recitation of claim elements, or use of a “negative” limitation. Finally, while an embodiment may be described as part of a series of steps or part of a more general structure, each said step may also be considered an independent embodiment in itself.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Although any methods and materials similar or equivalent to those described herein can also be used in the practice or testing of the present invention, representative illustrative methods and materials are described herein.
Referring to
It should be appreciated that the term “fluid” as used herein, while generally referring to liquids, such as water, in some circumstances also includes air or other gaseous or vaporous materials. It is expected that, at times, people may squeeze air from the reservoir to clear clogs, particularly when they are in a hurry and do not want to take the time to fill the reservoir with water. Such embodiments fall within the scope of the present invention.
Referring now to
Referring to
Referring now to
Some embodiments contain a fixture within the back housing 101 onto which a lanyard 601 or neckstrap may be fastened. The incorporation of such a lanyard/neck strap is important for the ease of use of the device, since it supports the apparatus during therapy, thus freeing up both hands of the patient to manipulate the device. In preferred embodiments, the device is designed to make it easy for the lanyard to be removed for cleaning purposes.
Still referring to
As shown in
The housing unit 115 can include a locking device that can hold the connector 201 to the housing unit 115, such as by spring-tension. In some embodiments, the locking device can be made of a connector release 110 and connector release spring 109. As the connector 201 is pushed into the slot 125, the connector 201 can deflect the connector release spring 109 until the connector 201 is fully engaged with the housing unit 115 and the connector release spring 109 holds the connector 201 in place. The connector 201 can be removed from the housing unit 115 by simultaneously depressing a button (such as a rocker) connected to the connector release spring 109 and pulling the connector 201 away from the housing unit 115.
As shown in
In an illustrative embodiment, and with reference to
Referring now to
Advantages of the various features of the present invention can be understood with reference to
The apparatus can be assembled before aspiration therapy, or draining ingested material from a patient's stomach and infusing fluid into the stomach. First the Tee Connector (201) is removed from housing 115. The Connector Tube (203) is attached to the proper barbed fitting (210) of the Tee Connector (201). Connect Drain Tube (204) to the proper barb fitting (205) of the Tee Connector (201). The Tee Connector (201) is inserted into the housing 115, making sure O-ring is in place and not twisted and the Tee Connector (201) is secured by the Tee Connector Release (110). The Drain Clamp (112) is rotated closed to occlude Drain Tube (204). After filling the Reservoir (500) with water, it is connected to the bottle connector or reservoir locking device by pushing up until it snaps in place. The skin port connector 315 is connected to the Skin Port Valve 310 of the patient and latched by pushing the lever on the skin port Connector 315 until a click is heard, confirming it is properly connected. The patient is then ready for the aspiration therapy.
Apparatuses of the invention can be used to perform aspiration therapy, and methods of assembling an apparatus for draining material from a stomach and infusing fluid into the stomach are also considered within the scope of the present invention. In one embodiment a connector is removed from a housing unit, the connector defining a first port, a second port, and a branched lumen, and the housing unit defining a housing lumen. A first tube can be connected to the first port and a second tube can be connected to the second port. The connector assembly can then be fit into the housing unit such that the housing lumen and branched lumen together form a fluid conduit, and an interface between the housing unit and the connector forms a fluid tight seal. While it is somewhat easier to attach the tubing with the connector out of the housing, the tubing can be attached regardless of whether the connector is inserted in the housing or removed. Regardless, this isn't necessarily an advantage. What is advantageous is that the tubing set with the connector can be treated as a single unit. The user will typically keep this tubing set assembled and ready to use or clean it as a unit.
When used for aspiration therapy, the housing 115 connects to the gastrostomy tube 305 via the skin port Connector 315 and the Skin Port valve 310. It provides a passage for aspiration of the semi-digested food out of the patient's stomach. It provides the means for infusing water into the patient's stomach to improve aspiration. It provides a simpler way of cleaning the housing 115 and associated connector 201 and tubing 203, 204 after the procedure.
The following is an example method of aspiration: After the assembled apparatus is connected to the patient through a skin port connector 315, the Drain Tube (204) can be placed over a toilet, bucket, or other removal system for discharging aspirated semi-digested food and fluid from the patient. Unclamping the Drain Tube (204) by releasing the Drain Clamp (112) starts aspiration. Semi-digested food can flow by gravitation and siphon from the gastrostomy tube 305, through the Skin Port valve, and the skin port connector 315 into the Connector Tube (203). Then it can flow into the Tee Connector (201). The Umbrella check valve (103) downstream of the third port 215, does not allow the fluid to pass through into the Reservoir (500). The aspirating semi-digested food can only flow into the Drain Tube (204) for discharge into the toilet.
The addition of water into the stomach can increase the pressure inside the stomach and dilute the contents within the stomach of the patient and improve aspiration. This can be done if and when aspiration stops even when connected to the apparatus 100 with Drain Tube (204) open. The following is an example procedure for infusing water: Occlude the Drain Tube (204), for example, by clamping using the Drain Clamp (112). This blocks the infusing water from flowing into the Drain Tube (204). Squeezing the Reservoir (500) creates pressure forcing water to flow out of the Reservoir, past the Umbrella valve and into the third port of the connector. Since the drain tube is occluded by the Drain Clamp, the water is forced through the second port into the Connector Tube (203), gastrostomy tube (305) and into the stomach clearing any clogs by the force of the water pressure. This additional volume of water in the patient's stomach increases the pressure inside the patient's stomach to restart aspiration.
Methods of cleaning an apparatus for draining material from a stomach are also disclosed. In one embodiment a connector can be engaged to a housing unit. The connector can define a first port, a second port, a third port and a branched lumen. The branched lumen can have a first arm that extends through the first port, a second arm that extends through the second port and a third arm that extends through the third port. The housing unit can define a housing lumen; wherein the engaging causes the branched lumen and the housing lumen together to form a fluid conduit and causes an interface between the housing unit and the connector to form a fluid tight seal. A first tube can be occluded, the first tube defining a first tube lumen. The first tube can be engaged to the first port of the connector and the first tube lumen and the branched lumen together can form a first fluid path. A fluid reservoir having an outlet and containing a fluid can be engaged to the housing unit such that the outlet and housing lumen together form a reservoir fluid pathway. A first pressure can be exerted on the fluid reservoir, causing fluid to flow from the fluid reservoir and through the conduit. The occlusion can be removed from the first tube. A second pressure can be exerted on the fluid reservoir, wherein the second pressure on the fluid reservoir causes fluid to flow from the fluid reservoir, and through the outlet, the reservoir fluid pathway, the fluid conduit and the first tube.
The following is a method for cleaning the apparatus 100 after the procedure is over: Remove the apparatus 100 from the patient by releasing the skin port Connector 315 from the Skin Port valve 310. Occlude the Drain Tube 204, such as by closing the Drain claim 112. Squeezing the Reservoir 500 forces water through the Umbrella Valve 103 into the Tee Connector 201. Since the Drain Tube 204 is clamped, water will flow through the Tee Connector 201 cleaning the skin port connector 315, the Connector Tube 203 and part of the Tee Connector 201. Next, occlude the Connector Tube 203 by blocking the Connector port 210 or by pinching the Connector Tube 203 closed. Unclamp the Drain Tube 204 by releasing the Drain Clamp 112. Squeeze the Reservoir 500 to force water through the Umbrella Valve 103 into the Tee Connector 201. Since, the water cannot flow through the occluded Connector Tube 203; it will flow through the Drain Tube 204 to discharge into the toilet. This will remove any food particles from the Drain Tube 204 and part of the Tee Connector 201.
It is to be understood that while the invention has been described in conjunction with the preferred specific embodiments thereof, that the foregoing description and the examples that follow are intended to illustrate and not limit the scope of the invention. It will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention, and further that other aspects, advantages and modifications will be apparent to those skilled in the art to which the invention pertains. In addition to the embodiments described herein, the present invention contemplates and claims those inventions resulting from the combination of features of the invention cited herein and those of the cited prior art references which complement the features of the present invention. Similarly, it will be appreciated that any described material, feature, or article may be used in combination with any other material, feature, or article, and such combinations are considered within the scope of this invention.
This application is the National Stage of International Application No. PCT/US2014/017546 filed Feb. 21, 2014, which claims the benefit of U.S. Provisional Application No. 61/768,462, filed Feb. 23, 2013, the entire disclosures of which are incorporated herein by reference.
Filing Document | Filing Date | Country | Kind |
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PCT/US2014/017546 | 2/21/2014 | WO | 00 |
Publishing Document | Publishing Date | Country | Kind |
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WO2014/130757 | 8/28/2014 | WO | A |
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Number | Date | Country | |
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20150366692 A1 | Dec 2015 | US |
Number | Date | Country | |
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61768462 | Feb 2013 | US |