System and method for managing pneumatic pathway in integrated multilayer wound dressing

Abstract

To provide a wound dressing system configured to provide instillation fluid and negative pressure wound therapy for fascia incision in incision of a deep abdominal part.SOLUTION: A system for providing instillation fluid to a deep abdominal wound includes an instillation module and a connection structure. The instillation module defines a first surface and a second, abdominal contents-facing surface. The instillation module includes a distribution hub configured to receive instillation fluid from an instillation fluid source. The connection structure includes a first surface, a second, abdominal contents-facing surface; and a flow path extending between the first surface and the second surface. The flow path includes an inlet configured to receive an instillation fluid conduit engaged with the instillation fluid source and an outlet in fluid communication with the instillation module. The flow path defines an axis extending between the inlet and the outlet. The flow path is configured to compress in a direction defined by the axis.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims the benefit of priority to U.S. Provisional Patent Application No. 62 / 674,970, filed May 22, 2018, which is incorporated herein by reference in its entirety.

[0002] FIELD OF THE INVENTION The present disclosure relates generally to wound therapy systems, and more particularly to wound therapy systems configured to provide intravenous therapy and negative pressure wound therapy to fascial incisions in deep abdominal incisions. [Background technology]

[0003] Infusion therapy is a type of wound therapy that involves applying therapeutic fluids (e.g., saline, prescribed solutions, antibiotics, irrigation solutions, etc.) to a treatment site to promote wound healing and granulation, prevent the wound from drying out, prevent the wound from becoming infected with bacteria, and / or treat an infected treatment site. Some infusion systems include an infusion fluid container and an infusion pump to provide the infusion fluid to the treatment site. Infusion therapy can be used in conjunction with NPWT or separately.

[0004] Negative pressure wound therapy (NPWT) is a type of wound therapy that involves applying negative pressure (lower than atmospheric pressure) to a treatment site to promote wound healing. NPWT applies negative pressure to a wound to drain fluid from the wound as it heals. Some NPWT systems include a pump that operates to maintain negative pressure at the treatment site by removing wound exudate from the treatment site. The wound exudate is typically delivered to a canister or other container fluidly connected to the pump, where it is stored until it is treated by the user.

[0005] Both IV therapy and NPWT can be used to treat deep abdominal wounds from abdominal laparotomy, which are used to gain access to the abdominal cavity for surgery and / or to relieve intraintestinal pressure by distending the intestines. In some cases, the abdominal incision is not closed immediately, resulting in an "open abdomen," and IV fluids and / or NPWT can be used to treat the open abdomen. For example, IV fluids can be used to irrigate the open abdomen to prevent the abdominal contents from drying out, and the open abdomen can also be periodically cleaned to potentially reduce the possibility of sepsis. However, manual flushing can cause damage and require further surgery.

[0006] Infusion and negative pressure systems adapted to treat open abdomens are often complex due to the need to maintain fluid-separated IV and NPWT pathways, which can be difficult to identify in a wound therapy system deployed on a patient. Furthermore, wound therapy systems can expand and contract during IV and NPWT cycles, making it difficult to maintain a fluid-tight seal on the IV and NPWT pathways. Furthermore, stiff IV and / or NPWT connectors can come into contact with the patient or cause discomfort to the patient during connection of the IV and / or NPWT connectors or during compression that occurs during NPWT. Summary of the Invention

[0007] One embodiment of the present disclosure is a system for providing intravenous fluid to a deep abdominal wound, comprising an infusion module and a connection structure. The infusion module defines a first surface and a second surface facing abdominal contents. The infusion module includes a distribution hub configured to receive intravenous fluid from an intravenous fluid source. The connection structure includes the first surface, the second surface facing abdominal contents, and a flow path extending between the first and second surfaces. The flow path includes an inlet configured to receive an intravenous fluid conduit that engages with the intravenous fluid source, and an outlet in fluid communication with the infusion module. The flow path defines an axis extending between the inlet and the outlet. The flow path is configured to compress in a direction defined by the axis.

[0008] Another embodiment of the present disclosure is a connection structure for providing intravenous fluid to a deep abdominal wound. The connection structure includes a first surface, a second surface facing abdominal contents, and a flow path extending between the first and second surfaces. The flow path includes an inlet configured to receive an intravenous fluid conduit that engages with an intravenous fluid source, and an outlet configured to be in fluid communication with an intravenous fluid module that can be positioned within the deep abdominal wound. The flow path defines an axis extending between the inlet and the outlet. The flow path is configured to compress in a direction defined by the axis.

[0009] Another embodiment of the present disclosure is a system for providing intravenous fluid to a deep abdominal wound. The system includes a sealing member and a wound dressing. The sealing member defines a first surface and a second surface facing abdominal contents. The sealing member is configured to form a fluid-tight seal around the periphery of the deep abdominal wound. The wound dressing includes an intravenous module, an intravenous conduit, and a sealing plate. The intravenous module defines a first surface and a second surface facing abdominal contents. The intravenous module includes a distribution hub portion configured to receive intravenous fluid from an intravenous fluid source. The intravenous conduit includes a first end in fluid communication with the intravenous module and a second end configured to be in fluid communication with the intravenous fluid source. The sealing plate includes an intravenous conduit passage extending from the intravenous fluid plate. The sealing plate is configured to receive the intravenous conduit passing therethrough. The sealing plate is securable to the first surface of the sealing member.

[0010] Another embodiment of the present disclosure is a connection system for providing infusion therapy and negative pressure therapy to a deep abdominal wound. The connection system includes an infusion module, a negative pressure manifold, and a connection plate. The infusion module defines a first surface and a second surface facing abdominal contents. The infusion module includes a distribution hub portion including an infusion inlet configured to engage an infusion conduit of an infusion fluid source. The negative pressure manifold includes a first surface and a second surface facing abdominal contents. The connection plate is secured to the negative pressure manifold and includes an infusion inlet connector having a first shape in fluid communication with the infusion inlet of the infusion module, and a negative pressure inlet connector having a second shape different from the first shape. The negative pressure inlet connector is in fluid communication with the negative pressure manifold.

[0011] Those skilled in the art will appreciate that the Summary is illustrative only and is not intended to be limiting in any way. Other aspects, inventive features, and advantages of the devices and / or processes described herein, as defined solely by the claims, will become apparent in the detailed description set forth herein and taken in conjunction with the accompanying drawings. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a cross-sectional view of a wound treatment system according to some embodiments.

[0013] [Figure 2] 2 is a perspective view of a connection system for use with the wound treatment system of FIG. 1 according to some embodiments.

[0014] [Figure 3] 2 is a perspective view of a connection system for use with the wound treatment system of FIG. 1 according to some embodiments.

[0015] [Figure 4]FIG. 1 is a diagram of an intravenous fluid conduit for use with a wound treatment system, according to some embodiments.

[0016] [Figure 5] 5 is a cross-sectional view of a wound treatment system including the intravenous fluid conduit of FIG. 4, according to some embodiments.

[0017] [Figure 6] FIG. 5 is a perspective view of a wound treatment system including the intravenous fluid conduit of FIG. 4, according to some embodiments.

[0018] [Figure 7] FIG. 1 is a perspective view of an intravenous fluid conduit for use with a wound treatment system, according to some embodiments.

[0019] [Figure 8] 8 is a cross-sectional view of a wound treatment system including the intravenous fluid conduit of FIG. 7, according to some embodiments.

[0020] [Figure 9] FIG. 1 is a perspective view of an IV module with an integrated IV fluid connection interface, according to some embodiments.

[0021] [Figure 10] FIG. 10 is a perspective view of a wound treatment system including the infusion module of FIG. 9, according to some embodiments.

[0022] [Figure 11] FIG. 1 is a perspective view of an IV module with an integrated IV fluid connection interface, according to some embodiments.

[0023] [Figure 12] FIG. 12 is a perspective view of a wound treatment system including the infusion module of FIG. 11, according to some embodiments.

[0024] [Figure 13]FIG. 1 is a perspective view of an IV connection sealing system for a wound treatment system, according to some embodiments.

[0025] [Figure 14] 10A-10C illustrate the process of securing the IV connection sealing system to create a fluid-tight seal. [Figure 15] 10A-10C illustrate the process of securing the IV connection sealing system to create a fluid-tight seal. [Figure 16] 10A-10C illustrate the process of securing the IV connection sealing system to create a fluid-tight seal.

[0026] [Figure 17] FIG. 1 is a perspective view of a wound treatment system including an IV connection sealing system. DETAILED DESCRIPTION OF THE INVENTION

[0027] overview Referring generally to the drawings, a wound therapy system having an infusion and negative pressure wound therapy (NPWT) system and its components is shown according to various exemplary embodiments. The wound therapy system may include a wound dressing, an infusion system, and an NPWT system. The wound therapy system may include an infusion module for delivering infusion fluid to a treatment site, a negative pressure manifold for providing NPWT to the treatment site, a connection plate for facilitating connection of the infusion system and / or NPWT system components to the wound dressing, and a sealing member for forming a substantially fluid-tight seal around the treatment site. The wound therapy system is configured to include an infusion flow path fluidly isolated from the NPWT flow path. The infusion system may include an infusion fluid source and an infusion pump. The NPWT system may include a negative pressure source and a fluid collection container. The term "negative pressure" refers to a pressure below ambient or atmospheric pressure.

[0028] In some embodiments, the connection plate is configured to facilitate connecting an infusion system component to the wound dressing system and connecting an NPWT system component to the wound dressing system. For example, the connection plate can include an infusion inlet having a first shape and an NPWT inlet having a second shape different from the first shape. The infusion system can include an infusion conduit pad configured to engage the infusion inlet but not the NPWT inlet. The NPWT system can include an NPWT conduit pad configured to engage the NPWT inlet but not the infusion inlet.

[0029] In some embodiments, the negative pressure manifold is configured to include an IV flow path in fluid communication with the infusion module. The IV flow path is fluidly isolated from the negative pressure manifold so that infusion fluid flowing along the IV flow path does not enter the negative pressure manifold. In some embodiments, the IV flow path is configured to expand and compress along with the negative pressure manifold during a NPWT cycle. In some embodiments, the IV flow path can be a bellows structure made of an IV fluid-impermeable material disposed within a through-hole in the negative pressure manifold. The bellows structure can be configured to expand or contract to accommodate different thicknesses and / or materials of the negative pressure manifold. In some embodiments, the IV flow path is made of the same material as the negative pressure manifold so that the IV flow path has substantially the same compression and expansion as the negative pressure manifold during a NPWT cycle. In such embodiments, the first surface, the second surface facing the abdominal contents, and the flow path (e.g., channel) formed within the IV flow path are coated with an IV fluid-impermeable material. The first surface is secured to a connecting plate or sealing member in a fluid-tight connection, and the second surface is secured to the drip module in proximity to an inlet of the drip module in a fluid-tight connection to create a drip flow path that is fluidly isolated from the NPWT flow path.

[0030] In some embodiments, the infusion module includes an integrated infusion conduit that can wrap around the side of the negative pressure manifold, abut against a sealing member, and / or pass through the negative pressure manifold. The integrated infusion conduit can be made of tubing that is impermeable to the infusion fluid or can be disposed within an envelope that is impermeable to the infusion fluid.

[0031] In some embodiments, the infusion module can include an integrated IV conduit that engages with a sealing system to form a substantially fluid-tight seal around an aperture in the sealing member that receives the integrated IV conduit. To deploy the infusion module and sealing system, the infusion module can be placed at the treatment site so that the infusion module substantially covers the abdominal contents. The infusion conduit is then passed around or through the negative pressure manifold and then through the aperture in the sealing member. A sealing plate having an IV conduit passage is then slid along the IV conduit until it abuts the sealing member. The sealing plate is then secured to the sealing member using an adhesive. A locking collar friction-fits around the exterior surface of the IV conduit passage to form a substantially fluid-tight seal between the IV conduit passage and the IV conduit.

[0032] Further features and advantages of the wound therapy system are described in detail below.

[0033] Wound Therapy System Referring to FIG. 1 , a cross-sectional view of a wound therapy system 10 is shown, according to an exemplary embodiment. In the illustrated embodiment, the wound therapy system is configured to treat the abdominal cavity and is discussed in the context of treating an open abdomen. The wound therapy system 10 can be used to treat an "open abdomen" condition, in which a deep abdominal wound is left open for a period of time. The components described herein can be used in various configurations of intravenous therapy systems and / or negative pressure wound therapy (NPWT) systems. The term "negative pressure" refers to a pressure that is less than ambient or atmospheric pressure.

[0034] In various embodiments, the wound therapy system 10 can be used to treat deep abdominal incisions. The wound therapy system 10 includes a wound dressing 14, an infusion system 22, and a NPWT system 26. The wound dressing 14 includes an abdominal treatment device 28, an infusion module 30, a negative pressure manifold 34, a sealing member 38, and an optional connection plate 42 (FIG. 5). The wound dressing 14 is intended for engagement with a treatment site on a patient, such as the patient's abdominal cavity. The wound therapy system 10 can be used with the NPWT system 26 and / or the infusion system 22. The NPWT system 26 can include a negative pressure source 46, such as a pump, and a fluid collection chamber 50. The infusion system 22 can include an infusion fluid source 54. In some embodiments, the infusion system 22 can include an infusion pump 56.

[0035] abdominal treatment device Referring to FIG. 1 , abdominal treatment device 28 is shown to include first layer 57, second layer 61, and foam spacer 65. Second layer 61 faces abdominal contents and is generally opposite first layer 57. Foam spacer 65 includes a first surface 67 and a second surface 69 facing abdominal contents. Foam spacer 65 includes a hub 71 and a plurality of leg members 73 extending generally radially from hub 71. Hub 71 includes an opening 75 therethrough for receiving at least a portion of drip module 30. Foam spacer 65 receives negative pressure from negative pressure source 46 and is generally in fluid communication with negative pressure conduit 138, which receives fluid flowing from the treatment site toward negative pressure source 46. The plurality of elongated legs 73 are configured to distribute negative pressure throughout the treatment site. As shown in FIG. 12 , first layer 57 and second layer 61 enclose leg members 73, hub 71, and interstitial spaces between adjacent leg members 73. In the illustrated embodiment, hub 71 and leg members 73 are made of a material that is substantially hydrophobic and structured for fluid flow under substantially atmospheric and negative pressure conditions. In some embodiments, hub 71 and leg members 73 are made of a reticulated foam, such as the reticulated foam described below with respect to negative pressure manifold 34. In some embodiments, leg members 73 can be cut to accommodate relatively small wounds. First layer 57 and second layer 61 of abdominal treatment device 28 can be made of a material that is fluid impermeable and intended not to irritate the patient's fascia and internal organs. The abdominal treatment device 28 may include a plurality of fenestrations 77 (e.g., negative pressure inlets) for distribution of negative pressure through the plurality of leg members 73 and / or to allow fluid to enter the plurality of leg members 73 and / or into the space between the plurality of leg members 73 and the layers 57, 61. The fenestrations 77 may include through holes, slits, or linear cuts. The fenestrations 77 may be circular, rectangular, polygonal, or any other shaped cross-section.

[0036] Infusion Module Referring to FIG. 1 , the IV module 30 is shown to include a first layer 58, a second layer 62, and a fluid distribution layer 66. The second layer 62 faces the abdominal contents and is generally opposite the first layer 58. The fluid distribution layer 66 includes a first surface 68 and a second surface 70 that faces the abdominal contents. The fluid distribution layer 66 includes a fluid distribution hub 72 and a plurality of fluid distribution structures 74 extending generally radially from the fluid distribution hub 72. The fluid distribution hub 72 is generally in fluid communication with the IV conduit 130 to receive the IV fluid and is in fluid communication with the fluid distribution structures to distribute the IV fluid to the fluid distribution structures 74. For example, the first layer 58 may include an opening 76 (e.g., an IV inlet) adjacent the fluid distribution hub 72 to provide fluid communication between the fluid distribution hub 72 and the IV connection structure. The first layer 58 and the second layer 62 are welded together along at least a portion of the edges of the first layer 58 and the second layer 62 to enclose the fluid distribution layer 66. In some embodiments, the first layer 58 and the second layer 62 enclose the fluid distribution structure 74 and the fluid distribution hub 72, but not the intervening spaces between adjacent fluid distribution structures 74 (FIG. 5). In the illustrated embodiment, the fluid distribution hub 72 and the plurality of fluid distribution structures 74 are made of a material that is substantially hydrophobic and structured for fluid flow under substantially atmospheric and negative pressure conditions. In some embodiments, the fluid distribution hub 72 and the plurality of fluid distribution structures 74 are made of a reticulated foam, such as the reticulated foam described below with respect to the negative pressure manifold 34. In some embodiments, the fluid distribution structure 74 can be cut to accommodate relatively small wounds.

[0037] In other embodiments, the first layer 58 and the second layer 62 may be made of a material that is fluid impermeable and intended not to irritate the patient's fascia and internal organs. As described in more detail below, in such embodiments, the first layer 58 and the second layer 62 are fluid distribution layers and may include a plurality of fenestrations 78 (e.g., IV outlets) for distribution of IV fluid through a plurality of fluid distribution structures 74. The fenestrations 78 may include through-holes, slits, or linear cuts. The fenestrations 78 may be circular, rectangular, polygonal, or any other shaped cross-section.

[0038] Negative Pressure Manifold 1-2 , the negative pressure manifold 34 is shown to include a first surface 82 and a second surface 86 opposite the first surface 82 that faces abdominal contents. When the negative pressure manifold 34 is applied to a treatment site, the first surface 82 faces away from the abdominal contents, while the second surface 86 faces toward the abdominal contents. In some embodiments, the first surface 82 of the negative pressure manifold 34 contacts the second surface 86 of the sealing member 38. In some embodiments, the negative pressure manifold 34 can include perforations 90 to facilitate removal of portions of the negative pressure manifold 34 to accommodate wounds of different sizes. In some embodiments, the second surface 86 of the negative pressure manifold 34 contacts the drip module 30. The negative pressure manifold 34 is adapted to wick fluid (e.g., exudate) from the wound and includes an in-molded manifold structure for distributing negative pressure throughout the negative pressure manifold 34 during negative pressure wound therapy treatment. The negative pressure manifold 34 is made from a material that allows fluid and / or negative pressure to pass between at least a first portion of the negative pressure manifold 34 and a second portion of the negative pressure manifold 34. In some embodiments, the negative pressure manifold 34 can include in-molded channels or pathways provided in the manifold that can distribute fluid removed around the manifold. In some embodiments, the in-molded channels or pathways can be formed by cells in a porous foam material.

[0039] The negative pressure manifold 34 may be made from a porous and permeable foam-like material, more specifically, a reticulated open-cell polyurethane or polyether foam that allows good permeability of wound fluids under reduced pressure. One such foam material that has been used is VAC® Granufoam® material available from Kinetic Concepts, Inc. (KCI) of San Antonio, Texas. Any material or combination of materials can be used for the negative pressure manifold 34, provided that the negative pressure manifold 34 is operable to distribute reduced pressure and provide a distributed compressive force along the treatment area.

[0040] Granufoam® material reticulated pores in the range of about 400-600 micrometers are preferred, although other materials may be used. The density of absorbent layer materials, such as Granufoam® material, is typically about 1.3 lb / ft 3 -1.6 lb / ft 3 (20.8 kg / m 3 -25.6kg / m 3 ) range. Materials with higher densities (smaller pore sizes) than Granufoam® materials may be desirable in some situations. For example, 1.6 lb / ft 3 (25.6 kg / m 3 Granufoam® material or similar materials having a density greater than 2.0 lb / ft may be used. 3 (32 kg / m 3 ) or 5.0 lb / ft 3 (80.1 kg / m 3 Granufoam® materials or similar materials having densities greater than 1000 psi may be used. The denser the material, the higher the compressive force that can be generated for a given reduced pressure. If a foam having a lower density than the tissue at the tissue site is used as the absorbent layer material, lifting forces may occur. In one exemplary embodiment, a portion of the wound dressing, e.g., the edges, may exert a compressive force, while another portion, e.g., the center portion, may provide a lifting force.

[0041] The absorbent layer material can be a reticulated foam that is subsequently felted to a thickness of approximately 1 / 3 (1 / 2) of the foam's original thickness. Among many possible absorbent layer materials, Granufoam® material or Foamex® technology foam (www.foamex.com) can be used. In some cases, it may be desirable to add ionic silver to the foam in a microbonding process or to add other substances to the absorbent layer material, such as antimicrobial agents. The absorbent layer material can be isotropic or anisotropic, depending on the exact orientation of the compressive force desired during the application of reduced pressure. The absorbent layer material may also be a bioabsorbable material.

[0042] Sealing member Referring again to FIG. 1 , the sealing member 38 is shown to include a first surface 94 and a wound-facing second surface 98 opposite the first surface 94. When the wound therapy system 10 is applied to a wound, the first surface 94 faces away from the wound, while the second surface 98 faces toward the wound. As shown in FIG. 1 , at least the periphery of the second surface 98 includes an adhesive. The adhesive is intended to secure the sealing member 38 to the patient's skin and form a fluid-tight seal around the incision. The sealing member 38 also provides a barrier to the passage of microorganisms through the wound therapy system 10.

[0043] In some embodiments, the sealing member 38 may be an elastomeric material or any material that provides a fluid seal. A "fluid seal" refers to a seal adequate to maintain pressure at a desired site when a particular reduced-pressure subsystem is engaged. The term "elastomer" means having the properties of an elastic material and generally refers to a polymeric material with rubber-like properties. Examples of elastomers may include, but are not limited to, natural rubber, polyisoprene, styrene butadiene rubber, chloroprene rubber, polybutadiene, nitrile rubber, butyl rubber, ethylene propylene rubber, ethylene propylene diene monomer, chlorosulfonated polyethylene, polysulfide rubber, polyurethane, EVA film, copolyester, thermoplastic polyurethane (TPU), and silicone. By way of non-limiting example, the sealing member 38 may be formed from silicone, an acrylic drape material such as 3M Tegaderm® drape material, one available from Avery, or an incise drape material. In some embodiments, the sealing member 38 may be at least partially transparent to facilitate viewing of the wound therapy system 10 through the sealing member 38, as described in more detail below.

[0044] The sealing member 38 may be substantially impermeable to liquids and substantially permeable to water vapor. In other words, the sealing member 38 may be permeable to water vapor but not to liquid water or wound exudate. This increases the total fluid handling capacity (TFHC) of the wound therapy system 10 while promoting a moist wound environment. In some embodiments, the sealing member 38 is also impermeable to bacteria and other microorganisms. In some embodiments, the sealing member 38 is configured to wick moisture from the negative pressure manifold 34 and distribute the moisture across the first surface 94. In some embodiments, the adhesive applied to the second surface 98 of the sealing member 38 is permeable to water vapor and / or patterned to allow water vapor to pass through.

[0045] Connecting plate Referring now to FIG. 6 , the connection plate 42 includes a first surface 102 and a second surface 106 that faces the abdominal contents. The connection plate 42 includes an IV inlet 110 and a NPWT inlet 114. In the illustrated embodiment, the connection plate 42 is a relatively dense material that serves as a land for the IV conduit pad 118 and the NPWT conduit pad 122. The connection plate 42 also provides a visual indication of where to cut or pierce the sealing member 38 when connecting the IV conduit pad 118 and the NPWT conduit pad. For example, the connection plate 42 may include markings (e.g., colors, patterns, words, etc.) to assist the operator in positioning the IV conduit pad 118 and the NPWT conduit pad 122. For example, in the illustrated embodiment, a visual contrast between the color of the connection plate 42 and the color of the negative pressure manifold 34 can assist the operator in accurately positioning the IV conduit pad 118 and the NPWT conduit pad 122. In some embodiments, the connecting plate 42 may include an adhesive layer on the second surface 106 of the connecting plate 42 to secure the connecting plate 42 to the negative pressure manifold 34 and prevent the connecting plate 42 from slipping.

[0046] IV and NPWT Conduit Connection System - Separate IV Pad and NPWT Pad 1-2, a connection system 124 for connecting a wound therapy dressing to an infusion system 22 and an NPWT system 26 is shown in accordance with some embodiments. Figure 1 shows a cross-sectional view of the connection system 124 mounted on a negative pressure manifold 34. Figure 2 shows a perspective view of the connection system 124 engaged with a wound dressing 14.

[0047] Connection system 124 is shown to include a connection plate 126, an IV conduit pad 118, and an NPWT conduit pad 122. IV conduit pad 118 is secured to an IV conduit 130 of IV system 22 via a substantially fluid-tight connection. IV conduit pad 118 includes an IV outlet connector 134 configured to engage with connection plate 126, as described in more detail below. In the illustrated embodiment, IV outlet connector 134 is an aperture. NPWT conduit pad 122 is secured to a negative pressure conduit 138 of NPWT system 26 via a substantially fluid-tight connection. NPWT conduit pad 122 includes an NPWT outlet connector 142 configured to engage with connection plate 126, as described in more detail below. In the illustrated embodiment, NPWT outlet connector 142 is a protrusion. In some embodiments, NPWT outlet connector 142 is a pointed protrusion (e.g., a spear). In some embodiments, the NPET outlet connector includes a barb 146. As shown in FIG. 1, in some embodiments, the IV conduit 130 and the negative pressure conduit 138 are made of thin and / or flexible tubing to reduce patient discomfort.

[0048] The connection plate 126 is secured to the first surface 82 of the negative pressure manifold 34. The connection plate 126 includes an IV connection structure 150 ( FIG. 1 ), an IV inlet connector 154, and an NPWT inlet connector 158. The IV connection structure 150 extends through the negative pressure manifold 34 (e.g., between the first surface 82 and the second surface 86) to facilitate fluid communication between the IV inlet connector 154 and the fluid distribution hub 72. The IV connection structure 150 is configured to prevent lateral flow of the IV fluid into the negative pressure manifold 34. For example, the IV connection structure can be made of a material that is substantially impermeable to the IV fluid or can be coated with a material that is substantially impermeable to the IV fluid. More specifically, the IV inlet connector 154 can be secured to the IV module 30 proximate the IV connection structure 150 and the opening 76 to form an IV fluid flow path that is fluidically isolated from the NPWT flow path.

[0049] The IV inlet connector 154 is in fluid communication with the IV connection structure 150. The IV inlet connector 154 is configured to engage with the IV conduit pad 118. In the illustrated embodiment, the IV inlet connector 154 is a protrusion extending from the connection plate 126. In some embodiments, the distal end of the IV inlet connector 154 is pointed (e.g., spear-shaped). In some embodiments, the IV inlet connector includes a barb 162 for engaging the IV outlet connector 134 in a friction fit. In the illustrated embodiment, the IV inlet connector 154 is shown as a protrusion and the IV outlet connector 134 is shown as a hole; however, in different embodiments, the IV inlet connector 154 and the IV outlet connector 134 can have different shapes so long as the IV inlet connector 154 and the IV outlet connector 134 are engageable. For example, in some embodiments, the IV inlet connector 154 can be a hole and the IV outlet connector 134 can be a protrusion.

[0050] 1 , the NPWT inlet connector 158 is in fluid communication with the negative pressure manifold 34. In the illustrated embodiment, the NPWT inlet connector 158 is a through-hole in the connection plate 126 configured to engage the NPWT outlet connector 142 with a friction fit. Although in the illustrated embodiment, the NPWT inlet connector 158 is shown as a through-hole and the NPWT outlet connector 142 is shown as a protrusion, in different embodiments, the NPWT inlet connector 158 and the NPWT outlet connector 142 can have different shapes so long as the NPWT inlet connector 158 and the NPWT outlet connector 142 remain engageable. For example, in some embodiments, the NPWT inlet connector 158 can be a protrusion and the NPWT outlet connector 142 can be a hole.

[0051] 1 and 2, IV inlet connector 154 and NPWT inlet connector 158 are shaped differently. This is intended to prevent IV outlet connector 134 from engaging with NPWT inlet connector 158 and to prevent NPWT outlet connector 142 from engaging with IV inlet connector 154. As best shown in FIG. 1, connection plate 126 is positioned below and visible through sealing member 38. The connection plate is configured to guide an operator of wound therapy system 10 to accurately connect IV conduit pad 118 and NPWT conduit pad 122. For example, IV inlet connector 154 and IV outlet connector 134 include a first pair of markings 166 that indicate that IV outlet connector 134 should be connected to IV inlet connector 154. The NPWT inlet connector 158 and the NPWT outlet connector 142 include a second pair of markings 170 that are different from the first pair of markings 166 to indicate that the NPWT outlet connector 142 should be connected to the NPWT inlet connector 158. In some embodiments, the first pair of markings 166 and the second pair of markings 170 may be a color, pattern, or shape.

[0052] As shown in FIG. 1 , the connection plate 126 is positioned below the sealing member 38 when the wound dressing 14 is deployed within a patient. The IV inlet connector 154 and the IV outlet connector 134 are accessible through the sealing member 38 (e.g., by penetrating the sealing member 38). The IV inlet connector 154 penetrates the sealing member 38 when the sealing member 38 is secured to the patient. The NPWT outlet connector 142 on the NPWT conduit pad 122 penetrates the sealing member 38 and connects to the NPWT inlet connector 158 of the connection plate 126. Thus, the first surface 174 of the connection plate 126 can be coated with an adhesive to secure the connection plate 126 to the second surface 98 of the sealing member 38 and maintain a fluid-tight seal with the abdominal cavity. The adhesive can prevent the connection plate 126 from moving when the IV conduit pad 118 and the NPWT conduit pad 122 engage with the connection plate 126. In some embodiments, the IV conduit pad 118 and the NPWT conduit pad 122 can include an adhesive layer surrounding the IV outlet connector 134 and the NPWT outlet connector 142, respectively, to form a fluid-tight seal with the first surface of the sealing member 38. The connection plate 126 has a sufficiently high density and / or a sufficient thickness to prevent protruding portions of the NPWT outlet connector 142 from contacting the patient and causing discomfort. In some embodiments, the connection plate is made of a high-density open-cell foam. In other embodiments, the connection plate can be made of a plastic material. In some embodiments, the connection plate 126 is made of a deformable material and / or the negative pressure manifold 34 is sized to be thicker than the connection plate 126, so that when the IV conduit pad 118 and the NPWT conduit pad 122 are connected, pressure applied to the connection plate 126 and compression within the abdominal cavity during NPWT do not cause discomfort to the patient due to the connection plate 126 and / or the NPWT outlet connector 142.

[0053] As shown in FIG. 1 , wound therapy system 10 includes an infusion flow path (arrow 172) that is fluidly separated from a negative pressure flow path (arrow 176). As indicated by arrow 172, infusion fluid enters wound therapy system 10 from infusion system 22 and travels along infusion conduit 130 to infusion conduit pad 118. The infusion fluid then enters infusion connection structure 150 via infusion inlet connector 154 of connection plate 126. The infusion fluid then enters fluid distribution hub 72 of infusion module 30 and travels along fluid distribution structure 74. The infusion fluid exits fluid distribution structure 74 through fenestrations 78 and travels to the treatment site.

[0054] As indicated by arrows 176, negative pressure generated by negative pressure source 46 of NPWT system 26 causes fluid (e.g., IV fluid, wound exudate, etc.) to enter multiple elongated legs 73 of abdominal treatment device 28 through fenestrations 77. As indicated by arrows 176, the fluid travels through at least a portion of elongated legs 73 and exits the abdominal treatment device through fenestrations 77. The fluid then travels through negative pressure manifold 34 to NPWT inlet connector 158 of connecting plate 126. The fluid then travels along NPWT conduit pad 122, into negative pressure conduit 138, and into fluid collection chamber 50 of NPWT system 26.

[0055] Infusion and NPWT Conduit Connection System - Integrated Infusion and NPWT Pad FIG. 3 illustrates a connection system 178 for connecting the wound therapy system 10 to the infusion system 22 and the NPWT system 26, according to some embodiments. The connection system 178 is shown to include a connection plate 126 and an integrated conduit pad 182. The integrated conduit pad 182 includes an infusion outlet portion 186 and an NPWT outlet portion 190. The infusion outlet portion 186 is secured to the infusion conduit 130 of the infusion system 22 via a substantially fluid-tight connection. The infusion outlet portion 186 includes an infusion outlet connector 194 configured to engage with the infusion inlet connector 154 of the connection plate 126. In the illustrated embodiment, the infusion outlet connector 194 is an aperture. The NPWT outlet portion 190 is secured to the negative pressure conduit 138 of the NPWT system 26 via a substantially fluid-tight connection. The NPWT outlet portion 190 includes an NPWT outlet connector 196 configured to engage with the NPWT inlet connector 158 of the connection plate 126, as described in more detail below. In the illustrated embodiment, the NPWT outlet connector 196 is a protrusion. In some embodiments, the NPWT outlet connector 196 is a pointed protrusion (e.g., a spear). In some embodiments, the NPWT outlet connector includes a barb 198. As shown in FIG. 3 , in some embodiments, the IV conduit 130 and the negative pressure conduit 138 are made of thin and / or flexible tubing to reduce patient discomfort.

[0056] Connection plate 126 and integrated IV and NPWT conduit pad 182 are substantially the same shape to facilitate aligning IV outlet connector 194 with IV inlet connector 154 and NPWT outlet connector 196 with NPWT inlet connector 158. For example, connection plate 126 is structured so that IV inlet connector 154 and NPWT inlet connector 158 have a fixed spacing therebetween. Integrated NPWT conduit pad 182 is structured so that IV outlet connector 194 and NPWT outlet connector 196 have the same fixed spacing therebetween as the spacing between IV inlet connector 154 and NPWT inlet connector 158. Thus, integrated IV and NPWT conduit pad 182 can be configured (e.g., has a size and spacing) to engage with connection plate 126 having particular dimensions (e.g., corresponding to a particular size and / or type of wound dressing 14).

[0057] As shown in FIG. 3 , IV inlet connector 154 and NPWT inlet connector 158 are shaped differently. This is intended to prevent IV outlet connector 194 from mating with NPWT inlet connector 158 and prevent NPWT outlet connector 196 from mating with IV inlet connector 154. As best shown in FIG. 3 , IV inlet connector 154 and IV outlet connector 134 include a first pair of markings 202 that indicate that IV outlet connector 134 should be connected to IV inlet connector 154. NPWT inlet connector 158 and NPWT outlet connector 142 include a second pair of markings 206 that are different from the first pair of markings 202 to indicate that NPWT outlet connector 142 should be connected to NPWT inlet connector 158. In some embodiments, first pair of markings 202 and second pair of markings 206 may be a color, pattern, shape, and / or word.

[0058] Compressible IV Conduit - Bellows 4-6 show a negative pressure manifold 34 including a compressible IV connection structure 210. The compressible IV connection structure 210 is intended to expand and contract along with the negative pressure manifold 34 as the negative pressure manifold 34 expands and contracts during a NPWT therapy cycle (e.g., the negative pressure manifold 34 and the compressible IV connection structure 210 expand when not under negative pressure and compress when under negative pressure). The compressible IV connection structure 210 is also intended to expand and contract to accommodate negative pressure manifolds 34 of different thicknesses. As best shown in FIG. 4 , the compressible IV connection structure 210 includes a first connecting plate 214, a second connecting plate 218, and a flow path 222 extending between the first connecting plate 214 and the second connecting plate 218. The first connecting plate 214 includes a first connecting surface 226 and a second surface 230 facing the negative pressure manifold. The first connecting plate 214 includes a flow channel inlet 234. The second connecting plate 218 includes a second connecting surface 238 and a first surface 242 that faces the negative pressure manifold. The second connecting plate 218 includes a flow channel outlet 246. As best shown in FIG. 5 , the first connecting plate 214 and the second connecting plate 218 are spaced apart to receive the negative pressure manifold 34 therebetween.

[0059] The flow channel 222 extends between the flow channel inlet 234 and the flow channel outlet 246 to direct IV fluid from the IV conduit 130 of the infusion system 22 to the fluid distribution hub 72 of the infusion module 30. The flow channel 222 defines a longitudinal axis A. The flow channel 222 is flexible and configured to expand and contract in a direction substantially defined by the longitudinal axis A. The flow channel 222 is formed from a plurality of angled walls 250. The plurality of angled walls 250 are oriented to form adjacent thickened and thinned portions to form a bellows structure. Under negative pressure, the angled walls 250 deflect toward the horizontal and contract in the direction defined by the longitudinal axis A. In the illustrated embodiment, the plurality of angled walls 250 includes four angled walls 250. In other embodiments, the plurality of angled walls 250 can include more or fewer angled walls. In the illustrated embodiment, the plurality of angled walls 250 form a conical segment. In other embodiments, the angled walls may form segments of other shapes, such as pyramidal shapes.

[0060] In some embodiments, the first connection plate 214, the second connection plate 218, and the flow passage 222 are integrally formed as a single piece. In other embodiments, the first connection plate 214, the second connection plate 218, and the flow passage 222 can be formed separately and then fastened together to form the compressible IV connection structure 210. The compressible IV connection structure 210 is made of a flexible material that can withstand cycles of expansion and contraction. The compressible IV connection structure 210 is configured to prevent lateral flow of the IV fluid into the negative pressure manifold 34. For example, the compressible IV connection structure can be made of a material that is substantially impermeable to the IV fluid or can be coated with a material that is substantially impermeable to the IV fluid.

[0061] 5 and 6 illustrate the compressible IV connection structure 210 deployed within the wound therapy system 10. As shown in FIG. 5, the compressible IV connection structure 210 can be received within and extend through a bore in the negative pressure manifold 34. The second connecting surface 238 of the second connecting plate 218 is secured to the infusion module 30 adjacent the fluid distribution hub 72 such that the flow path outlet 246 is in fluid communication with the opening 76 of the fluid distribution hub 72 to create an infusion flow path that is fluidly separate from the NPWT flow path. In some embodiments, the second connecting surface 238 can be welded to the infusion module 30. In other embodiments, the second connecting surface 238 can be secured to the infusion module 30 by an adhesive. In some embodiments, such as the embodiment shown in FIG. 5, the first connecting surface 226 of the compressible IV connection structure 210 can be secured to the second surface 98 of the sealing member 38 by an adhesive. In such embodiments, the first connection surface 226 of the compressible IV connection structure 210 may include markings (not shown) to facilitate placement of the IV conduit pad 118 (e.g., to provide an indication of where to puncture or penetrate the sealing member 38). The compressible IV connection structure 210 may contract in response to force exerted by an operator in securing the IV conduit pad 118, preventing discomfort to the patient during placement of the IV conduit pad 118.

[0062] 6, first connecting surface 226 can be secured to connecting plate 42 by an adhesive. In some embodiments, first connecting surface 226 can include markings 254 that indicate that first connecting surface 226 is to be secured to connecting plate 42. In some embodiments, first connecting surface 226 can include an adhesive for securing first connecting surface 226 to connecting plate 42. In such embodiments, first connecting surface 226 can include a removable backing, and markings 254 can be disposed on the removable backing.

[0063] As shown in FIG. 5, the wound therapy system 10 includes an infusion flow path (arrow 252) that is fluidly separated from the negative pressure flow path (arrow 256). As indicated by arrow 252, infusion fluid enters the wound therapy system 10 from the infusion system 22 and travels along the infusion conduit 130 to the infusion conduit pad 118. The infusion fluid then flows through the infusion inlet 110 of the connection plate 42 and into the flow path inlet 234 of the compressible infusion connection structure 210. The infusion fluid travels along the flow path 222 and exits the compressible infusion connection structure 210 through the flow path outlet 246. The infusion fluid then enters the fluid distribution hub 72 of the infusion module 30 and travels along the fluid distribution structure 74. The infusion fluid exits the fluid distribution structure 74 through the fenestrations 78 and travels to the treatment site.

[0064] As indicated by arrow 256, negative pressure generated by negative pressure source 46 of NPWT system 26 causes fluid (e.g., IV fluid, wound exudate, etc.) to enter multiple elongated legs 73 of abdominal treatment device 28 through fenestrations 77. As indicated by arrow 256, the fluid travels through at least a portion of elongated legs 73 and exits abdominal treatment device 28 through fenestrations 77. The fluid then travels through negative pressure manifold 34 to NPWT inlet connector 158 of connecting plate 126. The fluid then travels along NPWT conduit pad 122, into negative pressure conduit 138, and into fluid collection chamber 50 of NPWT system 26.

[0065] Infusion conduit - compressible foam 7-8 show a negative pressure manifold 34 including a compressible IV connection structure 258. The compressible IV connection structure 258 is positionable within the negative pressure manifold 34 and is intended to expand and contract along with the negative pressure manifold 34 as the negative pressure manifold 34 expands and contracts during a NPWT therapy cycle (e.g., the negative pressure manifold 34 and the compressible IV connection structure 258 expand when not under negative pressure and compress when under negative pressure to reduce patient discomfort during NPWT). The compressible IV connection structure 258 may be made of the same material as the negative pressure manifold 34 so that the compressible IV connection structure 258 compresses and expands by substantially the same amount as the negative pressure manifold 34 during NPWT therapy. As best shown in FIG. 4 , the compressible IV connection structure 258 includes a first surface 262, a second surface 266 facing the abdominal contents, and a flow path 270 extending between the first surface 262 and the second surface 266.

[0066] A flow channel 270 extends between a flow channel inlet 274 formed in the first surface 262 and a flow channel outlet 278 formed in the second surface 266 for conducting infusion fluid from the IV conduit 130 of the infusion system 22 to the fluid distribution hub 72 of the infusion module 30. The flow channel 270 defines a longitudinal axis B. A fluid-impermeable layer 282 is formed on at least a portion of the first surface 262 and on at least a portion of the second surface 266 along the flow channel 270 to prevent lateral flow of the infusion fluid into the negative pressure manifold 34. In some embodiments, the fluid-impermeable layer 282 in the illustrated embodiment is made of a polyurethane material. In other embodiments, the fluid-impermeable layer 282 may be made of another material that is substantially impermeable to the infusion fluid.

[0067] The compressible IV connection structure 258 can be made of a compressible material such that the compressible IV connection structure 258 compresses along the longitudinal axis B under negative pressure conditions. For example, the compressible IV connection structure can be made of the compressible reticulated foam material described above with respect to the negative pressure manifold 34. In some embodiments, the compressible IV connection structure 258 can be made of the same material as the negative pressure manifold 34 such that the compressible IV connection structure 258 compresses and expands along with the negative pressure manifold 34 during the NPWT cycle.

[0068] FIG. 8 shows the compressible drip connection structure 258 deployed within the wound therapy system 10. The compressible drip connection structure 258 can be received within and extend through the negative pressure manifold 34. The second surface 266 is secured with a fluid-tight seal to the drip module 30 adjacent the fluid distribution hub 72 such that the flow path outlet 278 is in fluid communication with the fluid distribution hub 72 to form a fluid-tight drip flow path that is fluidly separated from the NPWT flow path. In some embodiments, the second surface 266 can be welded to the drip module 30. In other embodiments, the second surface 266 can be secured to the drip module 30 by an adhesive. In some embodiments, the first surface 262 is secured with a fluid-tight seal to the connection plate 42 by an adhesive. In some embodiments, the first surface 262 is secured with a fluid-tight seal to the second surface 266 of the sealing member 38. In some embodiments, the first surface 262 can include markings 286 indicating that the first surface 262 should be secured to the connection plate 42. In some embodiments, the first surface 262 may include an adhesive for securing the first surface 262 to the connection plate 42. In such embodiments, the first surface 262 may include a removable backing, and the markings 286 may be disposed on the removable backing. In embodiments in which the second surface 266 is securable to the infusion module 30 by an adhesive, the second surface 266 may include markings (not shown) indicating that the second surface 266 should be secured to the infusion module 30. In some embodiments, the second surface 266 may include an adhesive for securing the second surface 266 to the infusion module 30. In such embodiments, the second surface 266 may include a removable backing, and the markings 286 may be disposed on the removable backing. In some embodiments, the markings 286 may be a color, a pattern, a shape, and / or a word.

[0069] As shown in FIG. 8 , the wound therapy system 10 includes an infusion flow path (arrow 284) that is fluidly separated from the negative pressure flow path (arrow 286). As indicated by arrow 284, infusion fluid enters the wound therapy system 10 from the infusion system 22 and travels along the infusion conduit 130 to the infusion conduit pad 118. The infusion fluid then flows through the infusion inlet 110 of the connection plate 42 and into the flow path inlet 274 of the compressible infusion connection structure 258. The infusion fluid travels along the flow path 270 and exits the compressible infusion connection structure 258 through the flow path outlet 278. The infusion fluid then enters the fluid distribution hub 72 of the infusion module 30 and travels along the fluid distribution structure 74. The infusion fluid exits the fluid distribution structure 74 through the fenestrations 78 and travels to the treatment site.

[0070] As indicated by arrow 286, negative pressure generated by negative pressure source 46 of NPWT system 26 causes fluid (e.g., IV fluid, wound exudate, etc.) to enter multiple elongated legs 73 of abdominal treatment device 28 through fenestrations 77. As indicated by arrow 286, the fluid travels through at least a portion of elongated legs 73 and exits the abdominal treatment device through fenestrations 77. The fluid then travels through negative pressure manifold 34 to NPWT inlet connector 158 of connecting plate 126. The fluid then travels along NPWT conduit pad 122, into negative pressure conduit 138, and into fluid collection chamber 50 of NPWT system 26.

[0071] Integrated drip conduit 9-10 illustrate an IV module 288 including an integrated IV conduit 290 according to some embodiments. The IV module 288 is configured to facilitate substantially uniform distribution of IV fluid independent of the patient's body position (e.g., supine or lateral position). The IV module 288 includes a first layer 292, a second layer 294, and a fluid distribution layer 298. The fluid distribution layer 298 includes a first surface 300 and a second surface 302 that faces the abdominal contents. The fluid distribution layer 298 includes a fluid distribution hub 304, a plurality of fluid distribution structures 308 extending radially from the fluid distribution hub 304, and the integrated IV conduit 290 extending from the fluid distribution hub 304. The first layer 292, second layer 294, fluid distribution hub 304, and plurality of fluid distribution structures 308 are substantially similar to the first layer 58, second layer 62, fluid distribution hub 72, and plurality of fluid distribution structures 74 described above with respect to the drip module 30, and will not be described in detail herein for the sake of brevity.

[0072] The IV conduit 290 includes a generally elongated portion 312 extending from the fluid distribution hub 304. A distal end 316 of the generally elongated portion 312 may be enlarged to form an IV conduit land 320. The IV conduit land 320 is configured to engage the connection plate 42 and / or to form a surface for engaging the IV conduit 290. Portions of the first layer 292 and the second layer 294 enclose the IV conduit (e.g., the generally elongated portion 312 and the IV conduit land 320). The portions are made of a fluid-impermeable material and do not include fenestrations 78, allowing IV fluid to enter the IV conduit 290 at the IV conduit land 320 and / or distal end 316 and travel along the elongated portion 312 to the fluid distribution hub 304 for distribution to the fluid distribution structure 308.

[0073] 10 shows an IV module 288 and a negative pressure manifold 34 positioned to treat a patient's open abdomen. In the illustrated embodiment, the elongated portion 312 of the IV conduit 290 is wrapped around the negative pressure manifold 34 such that the first layer 292 and first surface 300 of the elongated portion 312 abut the negative pressure manifold 34. In some embodiments, the portion of the first layer 292 abutting the negative pressure manifold 34 can include an adhesive to secure the first layer 292 to the negative pressure manifold 34 and prevent the IV conduit 290 from slipping. A second layer 294 of the integrated IV conduit 290 (e.g., the second surface 302 of the IV conduit land 320) faces away from the first surface 82 of the negative pressure manifold 34. In some embodiments, at least a portion of the second layer 294 includes an adhesive to secure the second layer 294 to the second surface 98 of the sealing member 38. In the illustrated embodiment, the connection plate 42 is secured to the IV conduit land 320, for example, by welding and / or adhesive. In other embodiments, the elongated portion 312 of the IV conduit can extend through a hole in the negative pressure manifold 34. The IV conduit 290 thus forms a flow path between the IV conduit 290 engaged with the IV system 22 and the fluid distribution hub 304 in a flow path that is fluidly isolated from the flow path between the negative pressure manifold 34 and the NPWT system 26.

[0074] The wound therapy system 10 includes an infusion flow path that is fluidly separated from the negative pressure flow path. Infusion fluid enters the wound therapy system 10 from the infusion system 22 and travels along the infusion conduit 130 to the infusion conduit pad 118. The infusion fluid then flows through the infusion inlet 110 of the connecting plate 42 to the infusion conduit land 320 of the infusion conduit 290 of the infusion module 30. The infusion fluid travels along the generally elongated portion 312 of the infusion conduit 290 and then enters the fluid distribution hub 72. The infusion fluid then enters and travels along the fluid distribution structure 74. The infusion fluid exits the fluid distribution structure 74 through the fenestrations 78 and travels to the treatment site.

[0075] Negative pressure generated by negative pressure source 46 of NPWT system 26 causes fluid (e.g., IV fluid, wound exudate, etc.) to enter multiple elongated legs 73 of abdominal treatment device 28 through fenestrations 77. The fluid travels through at least a portion of elongated legs 73 and exits the abdominal treatment device through fenestrations 77. The fluid then travels through negative pressure manifold 34 to NPWT inlet connector 158 of connecting plate 126. The fluid then travels along NPWT conduit pad 122, into negative pressure conduit 138, and into fluid collection chamber 50 of NPWT system 26.

[0076] Integrated drip conduit 11-12 illustrate an IV module 328 including an integrated IV conduit 332 according to some embodiments. The IV module 328 includes a first layer 336, a second layer 340, and a fluid distribution layer 344. The fluid distribution layer 344 includes a first surface 345 and a second surface 346 that faces the abdominal contents. The fluid distribution layer 344 includes a fluid distribution hub 348, a plurality of fluid distribution structures 352 extending radially from the fluid distribution hub 348, and the IV conduit 332 extending from the fluid distribution hub 348. The first layer 336, the second layer 340, and the plurality of fluid distribution structures 352 are substantially similar to the first layer 58, the second layer 62, and the plurality of fluid distribution structures 74 described above with respect to the IV module 30 and will not be described in detail herein for the sake of brevity.

[0077] The IV conduit 332 includes a fluid distribution hub engaging portion 356 and a flow path portion 360. The flow path portion 360 is engaged with the fluid distribution hub engaging portion 356 and the connection plate 42. In the illustrated embodiment, the flow path portion 360 is a flexible tube. The flow path portion 360 is configured to allow movement of the IV module 328 and the negative pressure manifold 34 during NPWT cycles. More specifically, the end of the flow path portion 360 is molded into the fluid distribution hub engaging portion 356 and the connection plate 42. The fluid distribution hub engaging portion 356 includes an IV fluid inlet portion 364 that engages with the flow path portion 360 and a plurality of channels 368 that are in fluid communication with each of the fluid distribution structures of the plurality of fluid distribution structures 352. In the illustrated embodiment, the plurality of channels 368 are molded into the fluid distribution hub engaging portion 356.

[0078] The fluid distribution hub 348 includes a bore 372 sized to receive the fluid distribution hub engaging portion 356. The fluid distribution hub engaging portion 356 is secured within the bore 372. In some embodiments, the first layer 336 and the second layer 340 can extend above (e.g., enclose) the fluid distribution hub engaging portion 356. In other embodiments, the first layer 336 and the second layer 340 enclose the fluid distribution layer 344, including the walls of the bore 372. In such embodiments, the fluid distribution hub engaging portion 356 can be welded to the first layer 336 and the second layer 340, and the first layer 336 and the second layer 340 can include fenestrations aligned with the plurality of channels 368 to allow infusion fluid to enter the fluid distribution hub 348.

[0079] FIG. 12 shows an IV module 328 and a negative pressure manifold 34 positioned to treat a patient's open abdomen. The flow path portion 360 of the IV conduit 332 is wrapped around the negative pressure manifold 32 so that the flow path portion 360 and the connection plate 42 overlie the first surface 82 of the negative pressure manifold 34. The connection plate 42 may be secured to the first surface of the negative pressure manifold 34 by, for example, welding and / or adhesive. The IV conduit 332 thus forms a flow path between the IV conduit 332 engaged with the IV system 22 and the fluid distribution hub 348, which is fluidly isolated from the flow path. As shown in FIG. 12, in some embodiments, a second IV module can be used.

[0080] The wound therapy system 10 includes an infusion flow path that is fluidly separated from the negative pressure flow path. Infusion fluid enters the wound therapy system 10 from the infusion system 22 and travels along the infusion conduit 130 to the infusion conduit pad 118. The infusion fluid then flows through the infusion inlet 110 of the connecting plate 42 into the flow path portion 360 of the infusion conduit 332. The infusion fluid travels along the flow path portion 360 of the infusion conduit 332 and then into the fluid distribution hub 72. The infusion fluid then flows along a plurality of channels 368 into and along a plurality of fluid distribution structures 352. The infusion fluid exits the fluid distribution structure 352 through the fenestrations 78 and travels to the treatment site.

[0081] Negative pressure generated by negative pressure source 46 of NPWT system 26 causes fluid (e.g., IV fluid, wound exudate, etc.) to enter multiple elongated legs 73 of abdominal treatment device 28 through fenestrations 77. The fluid travels through at least a portion of elongated legs 73 and exits the abdominal treatment device through fenestrations 77. The fluid then travels through negative pressure manifold 34 to NPWT inlet connector 158 of connecting plate 126. The fluid then travels along NPWT conduit pad 122, into negative pressure conduit 138, and into fluid collection chamber 50 of NPWT system 26.

[0082] One-piece IV conduit with friction-locking seal Figures 13-17 show an IV module 376 and an IV connection seal system 380. The IV module 376 and the IV connection seal system 380 can be used with abdominal treatment device 28. Figure 13 shows a top perspective view of the IV module 376 and the IV connection seal system 380 in a stored position. Figures 14-16 show steps in a process for deploying the IV module 376 and the IV connection seal system 380.

[0083] As best shown in Figures 14-17, the infusion module 376 includes an integrated infusion conduit 436, a first layer 388, a second layer 392, and a fluid distribution layer 396. The fluid distribution layer 396 includes a fluid distribution hub 400 and a plurality of fluid distribution structures 404 extending generally radially from the fluid distribution hub 400. The first layer 388, the second layer 392, the fluid distribution hub 400, and the plurality of fluid distribution structures 404 are substantially similar to the first layer 58, the second layer 62, the fluid distribution hub 72, and the plurality of fluid distribution structures 74 described above with respect to the infusion module 30 and will not be described in detail herein for the sake of brevity. The integrated infusion conduit 436 is in fluid communication with the fluid distribution hub 400 and is secured to the infusion module 376 using a fluid-tight connection. In some embodiments, the integrated IV conduit 436 may be secured to the IV module 376 using the fluid distribution hub engagement portion 356 described above in connection with Figures 11-12. In the illustrated embodiment, the integrated IV conduit 436 is a flexible tube. In some embodiments, the integrated IV conduit 436 may be provided in a storage position where the integrated IV conduit 436 is disposed within a coil that abuts the IV module 376. Once positioned within the abdominal cavity, the integrated IV conduit 436 may be unwound and deployed within the patient, as described in more detail below.

[0084] IV connection sealing system 380 includes a sealing plate 408, a sealing pad 410, and a locking collar 412. Sealing plate 408 includes a first surface 416 and a wound-facing second surface 420. Sealing plate 408 further includes an IV conduit passageway 424 extending between first surface 416 and second surface 420. A portion of IV conduit passageway 424 extends above first surface 416. IV conduit passageway 424 includes an exterior surface 438 and an interior surface 440 defining a passageway for receiving IV conduit 436. At least a portion of second surface 420 includes an adhesive for securing second surface 420 of sealing plate 408 to first surface 416 of sealing member 38 in a fluid-tight seal.

[0085] The sealing pad 410 includes a first surface 437 and a second wound-facing surface 439. The second surface 439 includes an adhesive coating. The sealing pad 410 is dimensioned to form a seal around the hole formed in the sealing member 38 to retrieve the IV conduit 436, as described in more detail below. In some embodiments, the sealing pad 410 can be made from the same material as the sealing member 38.

[0086] Locking collar 412 includes an exterior surface 441 and an interior surface 442 that defines a passageway 444. Passageway 444 is sized to allow locking collar 412 to move freely along IV conduit 436. Passageway 444 is sized to form a tight friction fit against exterior surface 440 of IV conduit passageway 444 of sealing plate 408 to form a fluid-tight seal around the circumference of IV conduit 436. In some embodiments, locking collar 412 is more rigid than IV conduit passageway 424 and is sized such that engagement of IV conduit passageway 424 with locking collar 412 causes IV conduit passageway 424 to deform inwardly against IV conduit 436 and form a tight seal around the circumference of IV conduit 436. In some embodiments, locking collar 412 further includes a flange 448 formed around a portion of exterior surface 441 of locking collar 412 to assist an operator in gripping locking collar 412.

[0087] 14-16 illustrate the process for deploying the IV module 376 and the IV connection sealing system 380. As shown in FIG. 14, the operator positions the IV module 376 relative to the patient's abdominal contents. The operator then unwraps the IV conduit 436 from its storage position (FIG. 13) and either extends the IV conduit 436 through a hole in the negative pressure manifold 34 or wraps the IV conduit 436 around the side of the negative pressure manifold 34. The operator then secures the sealing member 38 to the patient's skin surrounding the abdominal incision. The operator then forms a hole in the sealing member 38 and threads the IV conduit 436 through the hole in the sealing member 38. The user then positions the sealing pad 405, sealing plate 408, and locking collar 412 along the IV conduit 436 so that the second surface 98 of the sealing member 38 is oriented toward the first surface 416 of the sealing member 38. The user then slides the sealing pad 410 toward the sealing member 38, securing the second surface 407 of the sealing pad 410 around the hole in the sealing member 38. The user then slides the sealing plate 408 and locking collar toward the sealing member 38, as indicated by arrow 452. The user secures the second surface 420 of the sealing plate 408 to the first surface 437 of the sealing pad 410 with a fluid-tight seal. As shown in FIG. 15 , the user then slides the locking collar 412 toward the first surface 416 of the sealing plate, as indicated by arrow 456, to engage the locking collar 412 with a friction fit and establish a fluid-tight seal between the IV conduit passage 424 and the IV conduit 436, as shown in FIG. 16 . The operator can then connect the IV conduit 436 to the infusion system 22 and begin infusion therapy.

[0088] FIG. 17 is a perspective view of a wound therapy system 10 including an IV module 376 and an IV connection seal system 380 engaged with an IV system 22 to provide IV therapy, and a negative pressure manifold 34 engaged with an NPWT system 26 to provide NPWT. As shown in FIG. 17, when the wound therapy system 10 is deployed to a patient, the wound therapy system includes an IV flow path (arrow 460) that is fluidly separated from the negative pressure flow path (arrow 464). As indicated by arrow 460, IV fluid enters the wound therapy system 10 from the IV system 22 and travels along the IV conduit 130 to the fluid distribution hub 400 of the IV module 376. The IV fluid then flows along the fluid distribution structure 404. The IV fluid exits the fluid distribution structure 404 through the fenestrations 78 and travels to the treatment site.

[0089] As indicated by arrow 464, negative pressure generated by negative pressure source 46 of NPWT system 26 causes fluid (e.g., IV fluid, wound exudate, etc.) to enter multiple elongated legs 73 of abdominal treatment device 28 through fenestrations 77. As indicated by arrow 176, the fluid travels through at least a portion of elongated legs 73 and exits the abdominal treatment device through fenestrations 77. The fluid then travels through negative pressure manifold 34 to NPWT inlet connector 158 of connecting plate 126. The fluid then travels along NPWT conduit pad 122, into negative pressure conduit 138, and into fluid collection chamber 50 of NPWT system 26.

[0090] Combining Components Although the systems and methods disclosed herein are described in the context of various embodiments shown herein, it is contemplated that any of the systems and methods disclosed herein can be combined in different ways.

[0091] Configuration of an exemplary embodiment The structure and configuration of the systems and methods shown in the various exemplary embodiments are merely exemplary. While only a few embodiments have been described in detail in this disclosure, many modifications are possible (e.g., variations in the size, dimensions, structure, shape, and proportions of various elements, parameter values, mounting configurations, use of materials, color, orientation, etc.). For example, the positions of elements can be reversed or otherwise varied, and the nature or number or location of distinct elements can be changed or varied. Accordingly, all such modifications are intended to be included within the scope of this disclosure. The order or sequence of any process or method steps can be varied or re-ordered according to alternative embodiments. Other substitutions, modifications, changes, and omissions can be made in the design, operating conditions, and configuration of the exemplary embodiments without departing from the scope of this disclosure.

Claims

1. 1. A system for providing intravenous fluid to a deep abdominal wound, comprising: an intravenous module defining a first surface and a second surface facing the abdominal contents, the intravenous module including a distribution hub configured to receive intravenous fluid from an intravenous fluid source; A connection structure comprising: a first surface; and a second surface facing the abdominal contents; and a flow path extending between the first surface and the second surface, the flow path including an inlet configured to receive an infusion fluid conduit engaging the infusion fluid source and an outlet in fluid communication with the infusion module, the flow path defining an axis extending between the inlet and the outlet and configured to compress in a direction defined by the axis; a connection structure comprising: A system comprising:

2. The system of claim 1 , wherein at least a portion of the flow path is articulated to facilitate compression.

3. The system of claim 2 , wherein the articulated portion of the flow channel has a bellows shape.

4. The system of claim 1 , wherein at least the flow path is configured to compress under negative pressure provided by a negative pressure source.

5. The system of claim 1 , wherein the second surface is secured to the first surface of the drip module to provide a fluid-tight connection between the flow path and the drip module.

6. 10. The system of claim 1, further comprising a negative pressure manifold defining a first surface and a second surface facing the abdominal contents, the flow path extending through the negative pressure manifold such that the flow path is disposed within the negative pressure manifold.

7. 6. The system of claim 5, wherein the negative pressure manifold is configured to compress under a negative pressure provided by a negative pressure source, and the connection structure is configured to compress under the negative pressure provided by the negative pressure source.

8. 7. The system of claim 6, wherein the negative pressure manifold is formed from a compressible material and the connection structure is formed from the compressible material such that the negative pressure manifold and the connection structure collapse by substantially the same amount under negative pressure.

9. The system of claim 7 , wherein the compressible material is a reticulated foam material.

10. 2. The system of claim 1, further comprising: a first bellows plate including the first surface; and a second bellows plate including the second surface, wherein the first bellows plate, the second bellows plate, and the flow passage are integrally formed.

11. The system of claim 1 , further comprising a connection plate disposed adjacent the first surface of the connection structure, the connection plate including indicia for accurately positioning the intravenous fluid conduit.

12. The system of claim 1 , wherein the first surface comprises a first fluid-impermeable coating, the second surface comprises a second fluid-impermeable coating, and the flow channel comprises a flow channel fluid-impermeable coating.

13. The system of claim 9 , wherein the first fluid-impermeable coating, the second fluid-impermeable coating, and the channel fluid-impermeable coating are polyurethane.

14. 10. The system of claim 9, further comprising a sealing member securable around a periphery of the wound to provide a fluid-tight seal around the periphery of the wound, the sealing member being secured to the connection structure to form a fluid-tight connection between the first surface and the sealing member.

15. The system of claim 1 , wherein the infusion module and the connection structure are positionable within an incision in the deep abdominal wound.

16. 1. A connection structure for providing intravenous fluid to a deep abdominal wound, comprising: a first surface; and a second surface facing the abdominal contents; and a fluid channel extending between the first surface and the second surface, the fluid channel including an inlet configured to receive an infusion fluid conduit engaging the infusion fluid source and an outlet in fluid communication with an infusion module positionable within the abdominal wound, the fluid channel defining an axis extending between the inlet and the outlet, the fluid channel configured to compress in a direction defined by the axis; A connection structure comprising:

17. The connection structure of claim 15 , wherein at least a portion of the channel is articulated to facilitate compression.

18. The connection structure of claim 16 , wherein the articulated portion of the channel has a bellows shape.

19. 16. The connection structure of claim 15, wherein the second surface is securable to a first surface of the infusion module defining a first surface and a second surface facing abdominal contents, the infusion module including a distribution hub portion configured to receive infusion fluid from an infusion fluid source to provide a fluid-tight connection between the flow path and the infusion module.

20. 16. The connection structure of claim 15, wherein the first surface and the second surface are spaced apart and configured to receive a negative pressure manifold therebetween so that the flow path extends through the negative pressure manifold.

21. 21. The connection structure of claim 20, wherein the connection structure and the vacuum manifold are configured to compress under vacuum, the connection structure compressing substantially the same amount as the vacuum manifold.

22. The connection structure of claim 15 , wherein the connection structure is formed from a reticulated foam material.

23. The connection structure of claim 15, further comprising a first connection plate including the first surface and a second connection plate including the second surface, wherein the first connection plate, the second connection plate and the flow path are integrally formed.

24. 16. The connection structure of claim 15, wherein the first surface comprises a first fluid-impermeable coating, the second surface comprises a second fluid-impermeable coating, and the flow channel comprises a flow channel fluid-impermeable coating.

25. 25. The connection structure of claim 24, wherein the first fluid-impermeable coating, the second fluid-impermeable coating, and the channel fluid-impermeable coating are polyurethane.

26. 16. The connection structure of claim 15, wherein the sealing member is securable to a sealing member securable around the periphery of the wound to provide a fluid-tight seal for the connection structure around the periphery of the wound to form a fluid-tight connection between the first surface and the sealing member.

27. 1. A system for providing intravenous fluid to a deep abdominal wound, comprising: a sealing member defining a first surface and a second surface facing the abdominal contents, the sealing member configured to form a fluid-tight seal around a periphery of the deep abdominal wound; 1. A wound dressing comprising: an intravenous module defining a first surface and a second surface facing the abdominal contents, the intravenous module including a distribution hub configured to receive intravenous fluid from an intravenous fluid source; an intravenous conduit including a first end in fluid communication with the intravenous module and a second end configured to be in fluid communication with a source of intravenous fluid; a sealing plate including an IV conduit passage extending from the IV fluid plate and configured to receive the IV conduit therein, the sealing plate being securable to the first surface of the sealing member.

28. 28. The system of claim 27, wherein the intravenous conduit passage includes an exterior surface and an interior surface defining a passage for receiving the intravenous conduit.

29. 29. The system of claim 28, further comprising a locking collar slidable along the intravenous conduit, the locking collar configured to engage the exterior surface of the intravenous conduit passageway with a friction fit to form a fluid-tight seal between the elongated stem and the intravenous conduit.

30. 28. The system of claim 27, wherein the IV conduit extends through an aperture in the sealing member, and the sealing plate is configured to form a fluid-tight seal over the aperture.

31. a storage position in which the infusion conduit is disposed within the wound dressing; 28. The system of claim 27, wherein the system is positionable in a deployment position in which at least a portion of the IV conduit extends through the sealing member.

32. 1. A connection system for providing infusion therapy and negative pressure therapy to a deep abdominal wound, comprising: an intravenous fluid module defining a first surface and a second surface facing the abdominal contents, the intravenous fluid module including a dispensing hub portion including an intravenous fluid inlet configured to engage an intravenous fluid conduit of an intravenous fluid source; a negative pressure manifold including a first surface and a second surface facing the abdominal contents; A connection system comprising: a connection plate including an IV inlet connector having a first shape fixed to the negative pressure manifold and fluidly connected to the IV inlet of the IV module, and a negative pressure inlet connector having a second shape different from the first shape, wherein the negative pressure inlet connector is fluidly connected to the negative pressure manifold.

33. 33. The connection system of claim 32, further comprising an IV conduit pad configured to receive an IV conduit of an IV fluid source, the IV conduit pad including an IV outlet connector shaped to engage with the IV inlet connector and prevent engagement with the negative pressure inlet connector.

34. 34. The connection system of claim 33, wherein the IV inlet connector and the IV conduit pad include a pair of markings, the pair of markings indicating that the IV conduit pad is configured to mate with the IV inlet.

35. 33. The connection system of claim 32, further comprising a negative pressure conduit pad configured to receive a negative pressure conduit in fluid communication with a negative pressure source, the negative pressure conduit pad including a negative pressure outlet connector shaped to engage with the negative pressure inlet connector and prevent engagement with the IV inlet connector.

36. 36. The connection system of claim 35, wherein the negative pressure inlet connector and the negative pressure conduit pad include a pair of markings, the pair of markings indicating that the negative pressure conduit pad is configured to mate with the negative pressure inlet connector.

37. and an integrated IV and NPWT conduit pad, said integrated IV and NPWT conduit pad comprising: an IV conduit pad configured to receive an IV conduit of an IV fluid source, the IV conduit pad including an IV outlet connector shaped to engage the IV inlet connector and prevent engagement with the vacuum inlet connector; a negative pressure conduit pad configured to receive the negative pressure conduit in fluid communication with an IV fluid source, the negative pressure conduit pad including a negative pressure outlet connector shaped to engage the negative pressure inlet connector and prevent engagement with the IV inlet connector; 33. The connection system of claim 32, comprising:

38. 33. The connection system of claim 32, wherein the connection plate includes markings to facilitate positioning of an IV conduit and / or a negative pressure conduit.

39. 33. The connection system of claim 32, wherein one of the IV inlet connectors is one of an upward opening spear or a hole, and the negative pressure inlet connector is the other of the upward opening spear and a hole.

40. 33. The connection system of claim 32, further comprising a sealing member securable around an outer periphery of the wound to provide a fluid-tight seal around the outer periphery of the wound, the sealing member being secured to the connection structure to form a fluid-tight connection between the first surface and the sealing member, and the IV inlet connector and the negative pressure inlet connector being accessible through the sealing member.

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