Patent Application
20140031768
1. Technical Field
The present invention relates to a liquid dispensing container. The present invention further relates to a method of dispensing a liquid by drops using the container and a method of removing a stoma pouch flange using the container.
2. Related Art
To illustrate, on a person requiring a colostomy or urostomy, a stoma is formed causing a section of the digestive tract or urinary tract to protrude from the body, and a stoma pouch constituted by a donut-shaped flange and a vinyl bag, or the like, is attached. The stoma pouch is attached by adhering the donut-shaped flange surrounding the stoma to the skin, and must be replaced one or more times each day or number of days. When removing the flange from the skin during replacement, a remover is infiltrated between the skin and the flange in order to prevent skin injury or skin irritation, and an adhesive strength is weakened whereby removal can be accomplished.
At this point, if the remover becomes contaminated, there is a risk of the stoma becoming contaminated, leading to inflammation or infection; thus, it is necessary to use a remover that has been maintained in an uncontaminated state.
Remover products include liquid types contained in multiple-dose bottles, and napkin or liquid types individually packaged as single doses. In the case where the stoma bag replacement operation is performed by the user in question, the remover is usually applied with one hand. At this time, with a liquid type contained in a bottle for multiple doses, a front-end portion of the bottle may become unhygienic through repeated use, and there may be an increased risk of infection. In the case when using a product of a napkin type for a single dose, there is still a hygienic problem because the napkin is applied by hand, and remover may furthermore be deposited on the hand and become sticky, thereby becoming an impediment to subsequent operation. Additionally, in the case where a liquid type for a single dose is used, remover may fly out as soon as an individual package is opened and contaminate clothing, and the like, or it may not be possible to apply remover to the area where removal is to be performed.
To illustrate, an ophthalmic liquid preparation dispensing system, including a package containing a pad having absorbed an ophthalmic liquid preparation, is described in Japanese Translation of Published PCT Application No. 2002-516714. With this system, a portion of the package is removed to form an opening, a portion of the pad having absorbed liquid preparation contained in the package is caused to protrude from the opening, and the ophthalmic liquid preparation is dripped from the front end portion of the protruding pad.
The remover system described in Japanese Translation of Published PCT Application No. 2002-516714 has the problem that, because portion of the pad impregnated with liquid preparation is caused to protrude out of the opening, the protruding pad contacts the outside of the package, becoming contaminated.
The disclosed container is capable of dispensing a liquid by drops while preventing the liquid from contacting the contaminated outer portion of the container, keeping the liquid in an uncontaminated state. Also disclosed is a method of dispensing a liquid by drops using the container, and a method of removing a stoma pouch flange using the disclosed container.
Specifically, the present invention provides a liquid storing container including a storage portion formed from a single body front and back of a flexible material sealed around a periphery thereof, a nozzle portion communicating with the storage portion and acting as a liquid channel for dispensing a liquid stored within the storage portion to outside the container, and an enclosed inner space being formed by a seal. The liquid storing container also includes a nozzle tip portion formed by sealing the nozzle portion toward a tip thereof, a tab portion connected to the nozzle tip portion and constituted by a front surface tab portion and a rear surface tab portion wherein the front and rear surfaces of the flexible material are not sealed, a shoulder portion disposed in a direction of the nozzle tip portion opposite to that of the tab portion, and a body portion connected to the shoulder portion; wherein an angle formed by a line extending left and right from a base portion of the nozzle tip portion formed at a boundary between the nozzle tip portion and the shoulder portion in parallel with a lower edge and a ridge line of an upper portion of a seal portion enclosing the storage portion is from 5 to 60 degrees.
The present invention also provides a method of dispensing a liquid by drops that includes the steps of peeling apart a seal of a nozzle tip portion by pulling a front surface tab portion and a rear surface tab portion of a liquid storing container of the present invention to form a drop dispensing opening (step 1); and, following step 1, holding the tab portions along a side of the liquid storing container and turning the drop dispensing opening to face downward, and then pressing the container to dispense drops of a liquid within the liquid storing container (step 2).
The present invention also provides a method of removing a colostomy or urostomy stoma pouch flange that includes the steps of peeling apart a seal of a nozzle tip portion by pulling a front surface tab portion and a rear surface tab portion of the liquid storing container, which contains a remover for removing the flange of a colostomy or urostomy stoma pouch from the skin, in opposite directions, forming a drop dispensing opening (step 3); and, following step 3, holding the tabs down along the sides of the liquid storing container and turning the drop dispensing opening downward, then pressing the container to dispense the remover by drops onto the interface between the stoma pouch flange and the skin (step 4).
The present invention enables a container and method of dispensing a liquid by drops to be provided that allows liquid within the container to be dispensed by drop upon a necessary site while maintaining the liquid in an uncontaminated state. A removing method, by which remover can be applied easily and quickly to a desired site and a flange can be removed hygienically when replacing a stoma pouch, can also be provided by the present invention.
The configuration of the liquid storing container of the present invention will be described with reference to the drawings.
The seal portion toward the tip of the nozzle portion forms a tip of the nozzle portion as well as a nozzle tip portion 13. Following the nozzle tip portion 13, a tab portion 14 is formed wherein the front surface and rear surface of the flexible material are not sealed. The tab portion 14 is constituted by a front surface tab portion and a rear surface tab portion, and a drop dispensing opening is formed by pulling the front surface tab portion and rear surface tab portion in opposite directions to peel apart the seal portion of the nozzle tip portion 13 to a desired position. By forming the drop dispensing opening by peeling down to a base portion 15 of the nozzle tip portion, or to a position slightly in front (approx. 1 mm) of the base portion 15, the liquid contained within the container can be dispensed by drops from the drop dispensing opening while being kept in an uncontaminated state. A marking may be provided on the surface of the container at the nozzle tip portion so that a user can easily discern the position at which liquid can be dispensed while remaining uncontaminated. While there is the possibility of the tab portion 14 being contaminated through contact with the external environment or human hands, the nozzle tip portion 13 connected to the tab portion 14 is not contaminated by virtue of being sealed, and is kept uncontaminated until a drop dispensing opening is formed.
As seen from the outside, the liquid dispensing container 1 has a shoulder portion P continuing in a direction from the nozzle tip portion 13 opposite to that of the tab portion, as well as a body portion Q.
When dispensing drops of the liquid stored in the storage portion 10 of the liquid dispensing container 1 to the outside, the front surface tab portion and rear surface tab portion are pulled so as to pull apart the seal of the nozzle tip portion 13, then respectively folded around to the front and rear surfaces of the body portion Q and held down with the fingers, allowing liquid to be dispensed by drops from the drop dispensing opening. A foam member 17 impregnated with liquid can also be stored in the liquid dispensing container 1, in which case the foam member is pressed with the fingers from the outside of the body portion Q to dispense drops of the liquid impregnating the foam.
A line L1, extending from the base portion 15 of the nozzle tip portion in parallel to the bottom side of the liquid dispensing container 1, and an outer periphery L2 of the container 1 surrounding the seal portion at the shoulder portion P, which is a ridge line of the upper portion of the seal portion surrounding the storage portion 10, form an angle θ. The angle θ is from approximately 5 to approximately 60 degrees. Having the angle θ fall within this range enables liquid within the storage portion 10 to be dispensed by drops to the outside of the container through nozzle portion 11 and out the drop dispensing opening, while avoiding contact with the outside of the container, remaining uncontaminated, when the liquid is dispensed by drops from the container.
The liquid dispensing container 1 is formed from a flexible material. A known flexible material may be used without any particular restrictions. For example, a material having gas barrier and heat seal properties can be used. Moreover, it is preferable from considerations of maintaining the quality of the liquid contained within that the material have light-blocking properties. An example of such material is a multilayer laminate film prepared by laminating a vapor-deposited layer of a metal such as aluminum or a layer including metal foil and a resin film. Examples of resin films that can be used include: polyethylene, polypropylene, and other polyolefins; polyethylene terephthalate, and other polyesters; and nylon.
When a foam member 17 impregnated with a liquid is stored in the storage portion 10, a known soft, porous material can be used for the foam member. Examples include polyurethane foam, absorbent cotton, sponge, nonwoven fabric, and the like.
The foam member is preferably impregnated with the liquid to roughly 50 to 100% of a maximum liquid retention capacity thereof. In other words, all of the liquid is impregnated in the foam member when the foam member is stored in the container. In such a state, the liquid within the container will not drip out when the container is opened to form a drop dispensing opening and turned facing downward, but will only drip out when the container is pressed. When liquid permeates the foam member at less than 50% of the maximum fluid retention capacity of the foam member, the liquid will not sufficiently drip out even when the container is pressed; and when 100% is exceeded, liquid will drip out of the nozzle just from turning the nozzle downward after opening, even when not squeezed.
The liquid dispensing container 1 can contain a variety of types of liquid, and there is no particular limitation thereupon. In particular, it is preferable to store a liquid needing to be dispensed by drops in an uncontaminated state. Examples of such liquids include eye drops, disinfectants, bactericides, and liquid removing agents. The liquid remover may be a known volatile liquid remover. A liquid removing composition containing a methylsiloxane solvent, a nonionic surfactant, and an oil solution can be given as a specific example.
The methylsiloxane solvent is preferably a volatile methylsiloxane solvent having a boiling point of 95° C. to 170° C.; and can be selected, for example, from hexamethyldisiloxane (HMDS), octamethyltrisiloxane (OMTS), hexamethylcyclotrisiloxane (HMCTS), and mixtures thereof. In particular, hexamethyldisiloxane (HMDS) is preferable. These methylsiloxane solvents are commercially available, for example, from Shin-Etsu Chemical of Japan, Dow Corning, and other silicone manufacturers. The methylsiloxane solvent can be used in a quantity of about 85 to about 99.8 wt % based on a weight of the liquid removing composition.
Examples of nonionic surfactants that can be used include sorbitan ester surfactants (ICI Span series), polyoxyethylene sorbitan ester surfactants (ICI Tween series), polyethoxylated aklyl phenols (Triton X35, X102, and the like), and polyethylene glycol fatty acid monoesters (polyethylene glycol 400 monolaurate, polyethylene glycol 400 monooleate, and the like). The surfactant is suitably added to an extent of about 0.1 to about 10 wt % based on the weight of the liquid removing composition.
The oil solution, for example, may be an oil-compatible, adhesive-dissolving oil solution having a boiling point of 170° C. or higher and being difficult to volatilize. Examples of such oil solutions include terpenes, fatty compounds, fatty esters, and certain fatty acids. Terpenes and fatty compounds are included among these as being highly effective in softening and dissolving adhesives.
A specific example of a remover containing a methylsiloxane solvent, a nonionic surfactant, and an oil solution is TP1 remover for skin from 3M Health Care. The liquid remover mentioned above is capable of removing a variety of adhesives such as acrylic adhesives, synthetic rubber-based adhesives, silicone adhesives, and many other types of adhesives.
Because the flange of a colostomy or urostomy stoma pouch is adhered to the skin using an adhesive, the flange can be removed from the skin by dispensing drops of the liquid remover stored in the liquid dispensing container of the present invention onto the interface between the flange and the skin. In this instance, the remover within the container can be dispensed by drops onto the interface between the stoma pouch flange and the skin in an uncontaminated state by forming a drop dispensing opening according to the process described above, turning the drop dispensing opening downward while holding the tab portions at the surface of the liquid dispensing container, and pressing the container to dispense drops of the remover onto the interface between the stoma pouch flange and the skin.
The liquid dispensing container 1 may be manufactured according to a known method. For example, a laminated film may be folded in half, and a foam member disposed within as necessary. Two sides are next crimped by heat sealing while leaving one side on a top open, resulting in a pouch-shaped container having one end open. Next, liquid is injected into the container through the open end, and the container is sealed by means of heat sealing or ultrasonic sealing. Die cutting is then performed to obtain a container of a desired shape. The outside of the completed container may be further sterilized by means of gamma irradiation or the like.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2011-096064 | Apr 2011 | JP | national |
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/US12/32052 | 4/4/2012 | WO | 00 | 10/8/2013 |
