Abstract: Systems and methods for controlling a pump system for use in negative pressure wound therapy are described herein. In some embodiments, a method for controlling a pump system includes causing provision of negative pressure, via a flow path, to a wound dressing configured to be positioned over a wound, the flow path configured to fluidically connect the pump system to the wound dressing, measuring a first pressure value in the flow path at a first time, measuring a second pressure value in the flow path at a second time, calculating a first rate of pressure change using the first and second pressure values, and in response to determining that the calculated first rate of pressure change satisfies a threshold rate of change, providing an indication that the wound dressing is full, wherein the method is performed under control of a controller of the pump system.

Abstract: Systems and methods are provided for vacuum handling of composite parts. One embodiment is a method for performing vacuum securement of an object. The method includes covering the object with an impermeable membrane, locating a vacuum port at the impermeable membrane, and applying a negative pressure to the vacuum port that offsets air leaks between the impermeable membrane and the object.

Abstract: Disclosed herein are embodiments of a wound treatment apparatus employing hydrophobic and hydrophilic dressing materials and/or coating of the layers of a wound dressing. In some embodiments, the hydrophobic and hydrophilic dressing materials and/or coating controls the migration of fluid within the wound dressing.

Abstract: A container for sterilizing flexible bags can be for pharmaceutical use. The container includes an upper flat structure including at least one element supporting the flexible bags and designed to accommodate a plug port of the flexible bag. The support element includes at least one fastening element, which is suitable for retaining the flexible bags once they are inserted into the support element. The container also includes a lower receptacle designed to contain the upper flat structure and to couple to the upper flat structure in a detachable manner. The container further includes a cap for hermetically sealing the lower receptacle.

Abstract: A negative pressure wound closure system and methods for using such a system are described. Preferred embodiments of the invention facilitate closure of the wound by utilizing a stabilizing structure that preferentially contracts to provide for movement of the tissue. Some embodiments may utilize a protective layer, such as a mesh or net layer, attached to a top surface of the stabilizing structure. The protective layer prevents a drape positioned over the stabilizing structure from being drawn into cells of the stabilizing structure, and permits visualization of the collapse of the cells.

Abstract: In some embodiments, a negative pressure wound therapy device includes a negative pressure source and a controller configured to, in response to determining that the negative pressure source is directly fluidically connected to a wound dressing without a canister between the two, operate the negative pressure source in a first mode; otherwise, operate the negative pressure source in a second, different mode. The controller can be further configured to, in response to determining that a level of activity of the negative pressure source over a first time duration satisfies at least one of a leak or blockage condition, provide an indication of at least one of a leak or blockage and, in response to determining that the level of activity does not satisfy the at least one of the leak or blockage condition over a second time duration subsequent to the first time duration, discontinue providing the indication.

Abstract: A method and apparatus are disclosed for determining status of a canister of a topical negative pressure (TNP) system. The method includes the steps of monitoring pressure provided by a pump element of the TNP system, determining at least one characteristic associated with the monitored pressure and determining status of at least one parameter associated with a canister of the TNP system responsive to the determined characteristics.

Abstract: Systems, apparatuses, and methods for providing negative pressure and/or instillation fluids to a tissue site are disclosed. Some embodiments are illustrative of an apparatus or system for delivering negative-pressure and/or therapeutic solution of fluids to a tissue site, which can be used in conjunction with sensing properties of fluids extracted from a tissue site and/or instilled at a tissue site. For example, an apparatus may comprise a dressing interface or connector that includes a pH sensor, a humidity sensor, a temperature sensor and/or a pressure sensor embodied on a single pad within the connector and proximate the tissue site to provide data indicative of acidity, humidity, temperature and pressure. Such apparatus may further comprise algorithms for processing such data for detecting leakage and blockage as well as providing information relating to the progression of healing of wounds at the tissue site.

Abstract: A system and method for automatically removing by suction urine voided by a female. The system includes an integrated external catheter and suction regulator unit. The external catheter is applied at the female's urethra opening to receive urine voided by the female. The suction regulator is connected to a receptacle for collecting the urine and is operative to regulate suction applied to the canister from a hospitals' suction line to a regulated value which is applied the external female catheter, whereupon urine from the external female catheter is carried by the regulated suction through the suction regulator and into the receptacle. The external catheter includes an internal suction tube and an external removable and replaceable liquid permeable cover located on the internal suction tube. The external catheter is malleable so that it can be conformed to the anatomy of the female.

Abstract: Apparatuses and dressing components for tissue treatment with negative pressure and methods of making and using the dressings and dressing components are disclosed. For example, an apparatus for managing fluid from a tissue site may comprise at least two fluid pathways formed along the length of the apparatus. The apparatus may have at least one hinge line spanning along the length of the apparatus between at the at least two fluid pathways, and the apparatus may be curved about the hinge line. Some examples of the apparatus may comprise multiple layers assembled in a stacked relationship, which may be bonded together using weld lines to define at least two fluid pathways along the length of the apparatus. In some examples, the apparatus may be curved about the weld lines.

Abstract: A skin-safe effluent containment system that may be used to contain fluid leakage from openings in the body of a patient and will adhere to skin in any condition: healthy or injured, wet or dry, smooth, scarred, or uneven. Fluid leakage can occur from natural orifices such as the anus and vagina, spontaneously formed enteric fistulas, rectovaginal fistulas, and surgical openings such as ileostomy and colostomy stomas. The system includes a vacuum-adherent pouch device, comprised of a pouch connected to a porous foam ring which has an air-permeable contact layer on its bottom surface and an air seal on its top surface. The inner and outer perimeters of the foam ring are enclosed and sealed with skin-adhesive materials. When placed on the patient, negative pressure (vacuum) is applied to the foam ring so that the foam collapses and compresses the vacuum-adherent pouch device down against the patient's skin.

Abstract: Systems, apparatuses, and methods for providing negative pressure with instillation fluids to a tissue site are disclosed. Some embodiments are illustrative of an apparatus or system for delivering negative-pressure and/or therapeutic solution of fluids to a tissue site, which can be used in conjunction with sensing properties of fluids extracted from a tissue site and/or instilled at a tissue site. For example, a system may comprise a tissue interface adapted to be coupled to a source of instillation fluid and a dressing interface having a therapy cavity that includes a pH sensor, a humidity sensor, a temperature sensor, and a pressure sensor embodied on a single pad within the dressing interface to provide data indicative of acidity, humidity, temperature and pressure at the tissue site. Such apparatus may further comprise algorithms for processing such data for detecting leakage and blockage conditions as well as providing information relating to the progression of healing of wounds at the tissue site.

Abstract: Embodiments of negative pressure wound therapy systems and methods are disclosed. In one embodiment, an apparatus includes a housing, negative pressure source, circuit board, and one or more controllers. The circuit board can be supported by the housing and include a conductive pathway extending around at least part of a perimeter of a first side of the circuit board. The conductive pathway can be electrically coupled to an electrical ground for the circuit board. The one or more controllers can be mounted on the circuit board and activate and deactivate the negative pressure source.

Abstract: Disclosed herein are embodiments of a wound treatment apparatus with electronic components integrated within a wound dressing. In some embodiments, a wound dressing apparatus can comprise a wound contact layer, an absorbent layer over the wound contact layer, the absorbent layer comprising one or more apertures, a cover layer configured to cover and form a seal over the wound contact layer and the absorbent layer, and an electronics assembly comprising a negative pressure source. The cover layer can be configured to be compressed within the aperture in the absorbent layer when negative pressure is applied to the wound dressing apparatus and indicate a level of negative pressure below the cover layer. In some embodiments, the wound dressing apparatus can comprise an indicator material layer configured to protrude when negative pressure is applied to the wound dressing apparatus and indicate a level of negative pressure below the cover layer.

Abstract: A waste collection system for collecting medical/surgical waste. A mobile rover includes at least one waste container supported on the mobile rover for storing the medical/surgical waste. A chassis is separate from and configured be removably coupled with the mobile rover. The chassis supports a chassis controller and a vacuum pump configured to draw a vacuum on the waste container. A rover controller is supported on the mobile rover and configured to receive a pressure signal representative of a level of the vacuum. The chassis controller is configured to be in communication with the rover controller and to regulate the level of the vacuum drawn based on the pressure signal. A transmitter may be supported on the mobile rover and in communication with the rover controller, and a receiver may be supported on the chassis to be in communication with the transmitter to establish a communication circuit for data transfer.

Abstract: This disclosure describes devices, systems, and methods related to a connector for a dressing, such as a dressing of a hyperbaric oxygen therapy system. An example of a connector includes a connector body configured to define at least a portion of a first channel. The connector also includes a viewing member coupled to the connector body. The connector further includes a deformable member positioned within the first channel. The deformable member is configured to deform based on a pressure associated with the deformable member and to provide a visual indication, via the viewing member, of the pressure.

Abstract: Dressings for closing an opening through a surface of a tissue site are described. The dressing includes a cover adapted to form a sealed space over the opening and a bolster. The bolster is adapted to be positioned adjacent the opening and includes a first plurality of holes. The holes have an average width to length ratio causing the plurality of holes to collapse in a direction substantially perpendicular to the opening. Systems, apparatuses, kits and methods including and/or using the dressing for closing the opening are also described.

Abstract: An autonomous medical waste collection assembly comprises a base adapted to be positioned near a patient. At least one wheel is powered to move the base along a floor surface. A waste collection unit is coupled to the base for receiving medical waste from the patient. The waste collection unit includes a canister for holding the medical waste. A controller is operable to initiate a waste disposal protocol. The waste disposal protocol includes transmitting a movement signal to the powered wheel for automatically moving the autonomous medical waste collection assembly away from the patient to a disposal station. A user input device is in communication with the controller. The user input device is adapted to provide a user input signal in response to being actuated by a user. The controller is configured to initiate the waste disposal protocol in response to receiving the user input signal.

Abstract: Disclosed embodiments may relate to devices, systems, and methods for providing negative-pressure therapy simultaneously to a plurality of tissue sites using a single negative-pressure source. For example, a fluid bridge may comprise a plurality of distal ends, each configured to interact fluidly with a tissue site. In some embodiments, each distal end may have an aperture. The bridge may also comprise a port for entry of negative pressure into the enclosed space of the bridge. In some embodiments, each distal end may comprise a one-way valve. The enclosed space of the fluid pathway between the distal ends and the port may be supported in some embodiments, to prevent collapse due to negative pressure and/or compression.

Abstract: A fluid connector includes a body that has a first end and a second end. The first end defines a first opening that has a first diameter and the second end defines a second opening that has a second diameter different from the first diameter. The body has an inner surface defining a channel that extends from the first opening to the second opening. The inner surface smoothly extending from the first end to the second end. The first connector configured to prevent foaming of media flowed therethrough as a flow diameter of the media transition from the first diameter to the second diameter.

Abstract: Apparatuses for multi-orientation fluid management are described. In some example embodiments, an apparatus for managing fluids may comprise an absorbent core and one or more layers of a fluid acquisition and manifolding material. The fluid acquisition and manifolding material can provide a shell or envelope for capturing the fluid and distributing it to the absorbent core for storage. The manifolding material can distribute fluid as the absorbent core swells. The apparatus may additionally include an exudate container providing a casing for the absorbent core and the fluid acquisition and manifolding layers.

Abstract: Embodiments of negative pressure wound closure devices, systems and methods are disclosed. In some embodiments, a negative pressure apparatus includes a pump housing comprising a pump, a controller, and at least one light source and a panel removably attachable to the pump housing and configured to cover the at least one light source, the removable panel comprising one or more icons. The at least one light source can be configured to illuminate the one or more icons when the removable panel is attached to the pump housing.

Abstract: A dressing includes a foam layer, a plurality of cores extending substantially through the foam layer, and a drape sealable over the foam layer and a wound bed. The drape is couplable to a pump operable to create a negative pressure in the substantially-airtight volume. Each core is substantially removable from the foam layer to reveal a channel through the foam layer. Each core is defined by perforations that facilitate separation of the core from the foam layer.

Abstract: A system for providing therapy to a tissue site is described. The system can include a light sensor, a motion sensor, and a controller. The controller can be communicatively coupled to the source of negative pressure, the light sensor, and the motion sensor. In some embodiments, the controller can be configured to receive a first signal from the light sensor indicative of ambient light, receive a second signal from the motion sensor indicative of activity, and activate alert based on the first signal and the second signal.

Abstract: Some embodiments are directed to a system 10 for the application of topical negative pressure therapy to a site 18 on the body of a mammal. Some embodiments of the system 10 comprise a piston 22 and cylinder 24 device 12 having a self-contained power source for the generation of a reduced pressure and for aspirating the site 18. Some embodiments of the system 10 comprise a dressing 14 sealably surrounding the site 18 that can be operably connected to the device 12 by a conduit means 16 to apply the reduced pressure to the site 18.

Abstract: Embodiments disclosed herein are directed to negative pressure treatment systems and wound dressing systems, apparatuses, and methods that may be used for the treatment of wounds. In particular, some embodiments are directed to improved wound dressings comprising an obscuring layer that may hide fluid contained therein and a stabilizing structure that may aid in wound closure.

Abstract: A collapsible, clamping and/or steerable apparatus in conjunction with negative pressure system and methods for using such an apparatus are described. Preferred embodiments of the invention have lengths and bent and/or increase their curvatures along their lengths, by preferentially contracting and transforming upon negative pressure.

Abstract: A fluid collection system includes a vacuum source, a collection vessel, and a surgical drape. A fluid outflow line is connected between the surgical drape and the collection vessel. The fluid outflow line provides a path for fluid to the collection vessel. A suction line is connected with the collection vessel. The suction line provides suction to draw fluid through the fluid outflow line to the collection vessel. The suction line branches into a first suction line and a second suction line parallel with the first suction line. The first suction line and the second suction line are each connected with the vacuum source. A flow restrictor is disposed along the first suction line. A valve is disposed along the second suction line. The valve is opened in a pulsatile fashion when fluid is present in the surgical drape to increase a level of suction provided to the surgical drape.

Abstract: A low-profile dressing interface or connector may comprise at least two side-by-side fluid pathways fluidly coupled to a recessed space of the connector, one for providing negative pressure to a tissue interface and the other for sensing negative pressure within the recessed space adjacent the tissue interface. The apparatus may comprise a top layer having a plurality of closed cells with tapered sidewalls. The apparatus may also comprise a base layer forming a sealed space between the top layer and the base layer. The base layer may further include a plurality of closed cells having tapered sidewalls. The apparatus may then further comprise a barrier coupled between the top layer and the base layer to form two fluid pathways within the sealed space.

Abstract: A system and method for providing fluid to a tissue site is described. The method fluidly couples an instillation therapy system to the tissue site and monitors a pressure supplied to the tissue site by a reduced-pressure source with the instillation therapy system for a time period. The method provides fluid to the tissue site with the instillation therapy system in response to the pressure at the tissue site during the time period. The system includes a pressure sensor fluidly coupled to the tissue site to measure a pressure proximate the tissue site. A valve and a flow meter are fluidly between a fluid reservoir and the tissue site. A controller is communicatively coupled to the pressure sensor and the valve and configured to monitor the pressure at the tissue site and a volume of fluid flow to the tissue and, in response, operate the valve.

Abstract: A wound therapy system includes a wound dressing fluidly connected to a fluid canister. The fluid canister is attached to a canister receiving attachment of a housing structure. A pump is fluidly coupled to the canister and is configured to draw a negative pressure within an interior of the canister. A controller of the wound therapy system is configured to operate the pump to apply a vacuum to the interior of the canister and to obtain one or more measurements representative of at least one or a flow rate of air that is exhausted from the canister interior, a pressure within the canister interior and pump ripple. The controller is configured to estimate the volume of the canister based on the comparison of the measured parameters against model data stored by the controller that is representative of the operation of the therapy system with canisters of varying volumes.

Abstract: A fluid collection apparatus for use in negative pressure wound therapy. The fluid collection apparatus includes a flexible bag having a first opening and a second opening. The bag includes a structure defining a fluid pathway connecting the first opening and the second opening. The pathway is circulative and contributes to orientation independence of the bag in use. The bag further includes a load-bearing component.

Abstract: In some embodiments, a negative pressure apparatus includes a negative pressure source configured to provide negative pressure via a fluid flow path to a wound dressing placed to create a seal over a wound, a pressure sensor, and a controller. The controller can be configured to operate the negative pressure source in a first mode and determine a change in pressure in the fluid flow path over a period of time based on a plurality of measurements by the pressure sensor. In response to a determination that pressure in the fluid flow path is decreasing, the controller can operate the negative pressure source in a second mode in which greater amount of negative pressure is provided than in the first mode. In response to a determination that pressure in the fluid flow path is not decreasing, the controller can provide an indication of a first leak in the seal.

Abstract: The invention comprises a diaper sensor device comprising at least two sensor units each comprising at least a temperature sensor and a humidity sensor; optionally a positional sensor; a microcontroller communicating with the sensors and comprising a transmitter for transmitting data from the sensors; a power unit supplying power to the sensors, the microcontroller and the transmitter; a flexible watertight casing; housing the sensors, the transmitter; and the power unit, and fastening means for fastening the diaper sensor device on the outside of the diaper. Furthermore the invention comprises a method and a system for determining the existence and class of human excreta in a diaper.

Abstract: Embodiments described herein relate to apparatuses, systems, and methods for the treatment of wounds, for example using multiple wound dressings in combination with negative pressure wound therapy. A negative pressure would therapy apparatus can include a negative pressure source and a controller. The negative pressure source can include inlets configured to couple via fluid flow paths to wound dressings. The fluid flow paths can include pressure sensors configured to measure pressure in the fluid flow paths. The pressure sensors can include a first pressure sensor configured to measure pressure in the first fluid flow path and a second pressure sensor configured to measure pressure in the second fluid flow path. The controller can be configured to operate the negative pressure source and provide, based on measured pressure, indication of at least one operating condition associated with at least one of the fluid flow paths.

Abstract: The invention relates to a connection device (2) for use in the negative pressure therapy of wounds, comprising a flexible conducting means (6) and a connecting body (4) made of an elastomeric flexible material which can be applied to a negative pressure dressing which covers the wound and seals the wound off from the atmosphere, wherein the connecting body (4) has a centrally arranged raised first area (8) which receives the conducting means (6), and a flatter flange-shaped second area (10) opposite the first area, which second area forms a contact plane (12) on the negative pressure dressing, wherein a conducting portion (46) which is closed on all sides and is formed by the central first area adjoins a free end of the delivery lumen (42) of the conducting means (6) which opens in the central first area, wherein said conducting portion first opens at a distal end into an interior (16) of the central first area (8) and from there is in fluid communication with the suction lumen (40) of the conducting means (

Abstract: A device and method for treating a wound of a patient with negative pressure is provided. The device comprises a heat-assisted pump system. The pump system can be powered in part by heat derived from the patient. The pump system may be configured to be highly planar, light weight, and portable. The pump system may comprise a Stirling engine or a thermal acoustic engine.

Abstract: The present invention provides a wound dressing tubing connector, comprising a first unit and a second unit which are releasably connectable and which when connected form a fluid path through the connector, wherein the first unit comprises an inlet and an outlet and wherein the second unit comprises an inlet and an outlet, in which the outlet of the first unit and the inlet of the second unit when connected together define the fluid path, and wherein the first unit and the second unit are connectable to form an air and fluid tight seal and wherein the first unit and/or the second unit comprises a pressure regulator valve in fluid communication with the fluid path. Also provided are systems, kits and methods of treatment.

Abstract: A collection bottle and a method for detecting a characteristic of a sample are provided. The collection bottle includes a body and a cover. The body of the collection bottle has an accommodating space. The cover of the collection bottle is removably assembled to the body of the collection bottle, and the cover includes a channel and a testing part. The channel of the collection bottle communicates the accommodating space and the outside environment. While the cover of the collection bottle is assembled to the body, the testing part extends toward the accommodating space.

Abstract: The present invention relates to a wound volume measuring method and device, wherein the method comprises the steps of: disposing a foam dressing on a wound site; hermetically sealing the wound site by attaching a film dressing on skin adjacent to the wound site; supplying a negative pressure to the hermetically sealed space formed between the film dressing and the wound site, and thereby discharging fluid into the hermetically sealed space; measuring the flow of the fluid discharged from the hermetically sealed space; and calculating the volume of the wound site on the basis of the measured fluid flow.

Abstract: The disclosure provides stable formulations of cationic biocides that are primarily used in the treatment and prevention of infections. The disclosure is also concerned with processes for forming stable emulsions of cationic biocides and petrolatum.

Abstract: Provided is a negative-pressure wound therapy apparatus capable of causing negative pressure in a closed space defined by a wound dressing and a wound region with a sufficient suction flow rate as needed even with a miniaturized pump device. In atypical use that needs a high suction flow rate, because a pump device (30) with a high suction flow rate is attached to a wound dressing (10) and sucks gas from a closed space (904) defined by a wound region (903) and the wound dressing (10), even when a pump device (20) for typical use is miniaturized and the suction flow rate of the pump device (20) is reduced, a therapy apparatus (100) can achieve a suction flow rate sufficient for atypical use. Thus, the pressure value in the closed space (904) can decrease to a desired value more quickly.

Abstract: A method for removing a stone from a patient comprising the steps of: providing a suction evacuation assembly which includes a sheath and one or more side arms; inserting and positioning a distal end of the sheath into a lumen or cavity of a patient's body containing a stones; connecting a tube to one of the side arms and to a collection bottle; connecting another tube to the collection bottle and a negative pressure system; visualizing the stone or foreign body using a scope inserted through the assembly; activating the negative pressure system in order to remove the stone from the cavity if the diameter of the stone is narrower than an inside diameter of the sheath and the side arm, or performing a lithotripsy on the stone to create fragments with a decreased diameter which allow the passage through the assembly; and collecting the stone in the collection bottle.

Abstract: Disclosed embodiments relate to apparatuses and methods for wound treatment. In certain embodiments, a negative pressure wound therapy apparatus includes one or more indicators configured to illuminate in a pattern to communicate at least one of a status of a pump assembly and/or of a dressing. The pattern is configured to enable an electronic device comprising at least one camera to capture the illumination pattern of the one or more indicators and to determine the status corresponding to the pattern of illumination. In some embodiments, a negative pressure wound therapy apparatus is powered by an energy generator that has a first side configured to be in contact with a skin surface of a patient and a second side configured to be exposed to atmosphere, and the energy generator is configured to utilize a temperature differential between the skin surface and the atmosphere to generate electrical energy to power the apparatus.

Abstract: The present disclosure illustrates a nasal aspiration and wash device which includes a shell member, a pump, a suction part and a spray part. The pump is disposed in the shell member. The suction part is disposed on the shell member and configured to flow external gas into the pump. The spray part is disposed in the shell member and configured to spray atomized liquid out. The suction part and the spray part are spaced apart from each other a distance. The nasal aspiration and wash device of the present disclosure is able to separately perform a nasal aspiration function and a nasal wash function without interfering with each other, and the user does not need to replace a functional assembly for using the two functions.

Abstract: A device and method are provided to facilitate the handling of a volume or fluid. The device includes an elongated tube having an open first end and a second end. The tube defines a reservoir for receiving the volume or fluid. A stanchion has a first end received within the reservoir of the tube and a second end projecting from the open end of the elongated tube. In operation, the elongated tube is deposited in a first capsule having fluid therein. The first capsule is centrifuged such that the volume of fluid is received in a reservoir in the tube through the open end. The tube is removed from the first capsule and positioned in a second capsule such that the open end of the tube is spaced from a closed end of the second capsule. The second capsule is centrifuged such that the volume of fluid is expelled from the reservoir of the tube.

Abstract: A cannula-catheter bonding method and apparatus can include a needle having a specifically configured connector end to reduce the risk of the connector end disengaging with an adapter (e.g., a catheter, a cannula, or a connector of a Huber needle assembly, etc.). The specifically configured needle connector end can be a formation, such as a barb, a bead, an annular structure, a rib, etc. The formation can be formed on the connector end, and may be elongated with a conical shaped nose leading to a base with a bottom. The formation can be used to prevent movement of the needle relative to the adapter. A method for producing the formation can include forming a mold for the formation in a plate, where the connector end can then be placed within the mold so that curable material can be disposed within the mold. Upon hardening of the curable material, the formation can take the shape of at least a portion of the mold.

Abstract: A system and apparatus for treating a tissue site with reduced pressure and collecting fluids from the tissue site is disclosed. The system may include a reduced-pressure source, a pouch in fluid communication with the reduced pressure source, and a dressing in fluid communication with the pouch. The pouch may include a first wall, a second wall having a periphery coupled to the first wall to form an interior, and a third wall extending through the interior to form a first chamber in fluid communication with the dressing and a second chamber in fluid communication with the reduced pressure source. A plurality of filters are positioned in the third wall. The filters permit fluid communication between the first chamber and the second chamber.

Abstract: The present disclosure provides an apparatus and methods of use for collecting particles. An example collection device includes (a) a vessel defining a chamber, wherein the vessel includes a distal end and a proximal end, (b) an inlet port extending from the proximal end of the vessel, wherein the inlet port is in fluid communication with the chamber, and (c) an outlet port extending from the proximal end of the vessel, wherein the inlet port is in fluid communication with the chamber, and wherein the outlet port includes a porous material positioned between the chamber and the outlet port.

Abstract: A reduced-pressure device for wound treatment includes a housing, an air pressure storage unit, a compression unit and a pressure indicating module. The air pressure storage unit is installed in the housing and comprises a pressure storage container, a piston assembly and a piston spring, and the compression unit is mounted on the piston assembly, and the pressure indicating module is engaged to the pressure storage container and the piston assembly. Therefore, the user can see the information shown on the pressure indicating module to be easily aware of how much capacity of negative pressure the reduced-pressure device can continuously be provided in order to determine when to operate the compression unit again for providing the desired negative pressure.