A system for negative pressure wound occlusion therapy

Abstract

A system for negative pressure wound occlusion (NPWT) includes a bridge dressing comprising a first bridge end portion adjacent to the wound and a second bridge end portion opposite to the first bridge end portion. The system further includes a pump and a casing spaced apart from the wound. The casing includes a first portion comprising a first internal cavity configured to receive the pump at least partially inside, a second internal cavity spaced apart from the first internal cavity, and a channel for fluid communication between the first internal cavity and the second internal cavity. The casing further includes a second portion pivotably connected to the first portion and a third portion pivotably connected to the first portion and pivotable relative to the first portion independently of the second portion.

Description

Technical Field

[0001] Cross - reference to Related Applications This application claims the benefit of priority to U.S. Provisional Patent Application No. 63 / 445,011, filed on February 13, 2023, which is hereby incorporated by reference in its entirety.

[0002] The present disclosure generally relates to negative pressure wound therapy. More particularly, the present disclosure relates to a system for negative pressure wound therapy of a wound.

Background Art

[0003] Negative pressure wound therapy (NPWT) systems are embodied as sealed wound treatment systems that are particularly adapted for chronic, refractory, and / or complex wounds. Specifically, in order to promote wound healing, a reduced pressure (commonly referred to as "negative pressure") compared to the surroundings is applied to the wound. Negative pressure causes mechanical contraction of the wound and removal of exudates such as debris, necrotic tissue, and microbial load (e.g., bacteria and biofilms) from the wound, thus promoting the formation of granulation tissue and accelerating wound healing. In an NPWT system, the negative pressure is typically generated by an electromechanical pump that displaces air within a sealed volume around the wound. However, conventional NPWT systems can be cumbersome for out - patient use due to large, rigid therapy units and stiff tubing connecting the dressing and the electromechanical pump. This can lead to a negative experience for the patient. Therefore, there is a need for a system that provides NPWT to a wound by overcoming the above - mentioned limitations.

Summary of the Invention

[0004] In a first aspect, the present disclosure provides a system for negative pressure wound occlusion (NPWT) of a wound. The system includes a bridge dressing comprising a first bridge end portion adjacent to the wound and a second bridge end portion opposite to the first bridge end portion. The system further includes a pump and a casing spaced apart from the wound. The casing includes a first portion comprising a first internal cavity configured to at least partially receive the pump, a second internal cavity spaced apart from the first internal cavity and configured to receive the second bridge end portion of the bridge dressing, and a channel for fluid communication between the first internal cavity and the second internal cavity. The casing further includes a second portion pivotably connected to the first portion and configured to at least partially engage with the first portion in the closed position of the second portion. The second part includes a third internal cavity that aligns with the first internal cavity in the closed position of the second part, thereby allowing the pump to be received inside the first and third internal cavities. The casing further includes a third part that is pivotably connected to the first part and pivotably connected to the first part independently of the second part. The third part is configured to at least partially engage with the first part in the closed position of the third part. The third part covers the second internal cavity in the closed position of the third part, thereby allowing the second bridge end portion of the bridge dressing to be received between the second internal cavity and the third part.

[0005] In a second aspect, the disclosure provides a system for negative pressure wound occlusion (NPWT) of a wound. The system includes a bridge dressing comprising a first bridge end portion adjacent to the wound and a second bridge end portion opposite to the first bridge end portion. The system further includes a pump and a casing spaced apart from the wound. The casing includes an internal cavity that receives the pump inside, an external surface, and a channel at least partially disposed on the external surface and in fluid communication with the internal cavity. The second bridge end portion of the bridge dressing is connected to and disposed on the external surface of the casing. The second bridge end portion is in fluid communication with the channel and covers the channel.

[0006] In a third aspect, the disclosure provides a system for negative pressure wound occlusion (NPWT) of a wound. The system includes a bridge dressing comprising a first bridge end portion adjacent to the wound and a second bridge end portion opposite to the first bridge end portion. The system further includes a tube comprising a first tube end portion and a second tube end portion opposite to the first tube end portion. The system further includes a first manifold disposed around the first tube end portion and fluidically coupled to the tube. The first manifold is connected to the second bridge end portion of the bridge dressing. The system further includes a second manifold disposed around the second tube end portion and fluidically coupled to the tube. The system further includes a pump and a casing spaced away from the wound. The casing includes an internal cavity receiving the pump, an external surface, and channels at least partially disposed on the external surface and fluidly communicating with the internal cavity. The second manifold is connected to the outer surface of the casing and is mounted on top of it. The second manifold communicates with the channel and covers the channel. [Brief explanation of the drawing]

[0007] The exemplary embodiments disclosed herein can be better understood by considering the following detailed description in relation to the following drawings. The drawings are not necessarily drawn to scale. Similar numbers used in the drawings refer to similar components. However, it will be understood that the use of numbers to refer to components in a given drawing is not intended to limit components in another drawing labeled with the same number. [Figure 1] Figure 1 is a schematic top view of a system for negative pressure wound occlusion (NPWT) according to one embodiment of the present disclosure. [Figure 2A] Figure 2A is a top perspective view of the casing of the system shown in Figure 1, according to one embodiment of the present disclosure. [Figure 2B] Figure 2B is a rear perspective view of the casing shown in Figure 2A, according to one embodiment of the present disclosure. [Figure 2C] Figure 2C is a side perspective view of the casing shown in Figure 2A, according to one embodiment of the present disclosure. [Figure 2D] Figure 2D is a front perspective view of the casing shown in Figure 2A, according to one embodiment of the present disclosure. [Figure 2E] Figure 2E is an enlarged view of a portion of the casing shown in Figure 2A, according to one embodiment of the present disclosure. [Figure 2F] Figure 2F is a side cross-sectional view of a portion of Figure 2E along the line A-A' according to one embodiment of the present disclosure. [Figure 2G] Figure 2G is an enlarged view of a portion of the casing shown in Figure 2C, according to one embodiment of the present disclosure. [Figure 3] Figure 3 is a schematic top view of a system for wound NPWT according to another embodiment of the present disclosure. [Figure 4] Figure 4 is a schematic diagram of a system for wound NPWT according to another embodiment of the present disclosure. [Figure 5A] Figure 5A is a top perspective view of the casing of the system of Figure 1, according to another embodiment of the present disclosure. [Figure 5B] Figure 5B is a rear perspective view of the casing shown in Figure 5A, according to one embodiment of the present disclosure. [Figure 5C] Figure 5C is a side perspective view of the casing shown in Figure 5A, according to one embodiment of the present disclosure. [Figure 5D] Figure 5D is a front perspective view of the casing shown in Figure 5A, according to one embodiment of the present disclosure. [Figure 5E] Figure 5E is an enlarged view of a portion of the casing shown in Figure 5A, according to one embodiment of the present disclosure. [Figure 5F] Figure 5F is a side cross-sectional view of a portion of Figure 5E along the line B-B' according to one embodiment of the present disclosure. [Figure 5G] Figure 5G is an enlarged view of a portion of the casing shown in Figure 5C, according to one embodiment of the present disclosure. [Figure 6A] Figure 6A is a top perspective view of the casing of the system of Figure 1, according to another embodiment of the present disclosure. [Figure 6B] FIG. 6B is a rear perspective view of the casing of FIG. 6A according to an embodiment of the present disclosure. [Figure 6C] FIG. 6C is a side perspective view of the casing of FIG. 6A according to an embodiment of the present disclosure. [Figure 6D] FIG. 6D is a front perspective view of the casing of FIG. 6A according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0008] In the following description, reference is made to the accompanying drawings which form a part hereof and in which various embodiments are shown by way of illustration. It is to be understood that other embodiments are contemplated and may be made without departing from the scope and spirit of the present disclosure. Accordingly, the following detailed description should not be taken in a limiting sense.

[0009] In the following disclosure, the following definitions are adopted.

[0010] As described herein, all numbers should be considered to be modified by the term "about." As used herein, "a," "an," "the," "at least one," and "one or more" are used interchangeably.

[0011] As used herein as a modifier to a property or attribute, the term "generally" means that the property or attribute is readily recognizable by one of ordinary skill in the art, but does not require absolute precision or complete conformance (e.g., within + / - 20% for a quantifiable property) unless specifically defined otherwise.

[0012] The term "substantially" means a high degree of approximation (e.g., within + / - 10% for a quantifiable property) but again does not require absolute precision or complete conformance unless specifically defined otherwise.

[0013] The term "about" means a high degree of approximation (e.g., within + / - 5% for quantifiable characteristics) unless specifically defined otherwise, but does not require absolute precision or exact match here either.

[0014] Terms such as same, equal, uniform, constant, exactly, etc. are not required to have absolute precision or exact match, but are understood to be within the normal tolerances or measurement errors applicable to a particular situation.

[0015] As used herein, the terms "first" and "second" are used as identifiers. Thus, such terms should not be construed as limiting the present disclosure. When used with a feature or element, the terms "first" and "second" are interchangeable throughout the various embodiments of the present disclosure.

[0016] As used herein, when a first material is said to be "identical" or "similar" to a second material, at least 90% by weight of the first and second materials are identical, and any variation between the first and second materials is less than about 10% by weight of each of the first and second materials.

[0017] As used herein, "at least one of A and B" should be understood to mean "only A, only B, or both A and B".

[0018] Unless otherwise specified or limited, the terms "attached", "connected", "coupled", and variations thereof are used in a broad sense and include both direct physical connection and indirect physical connection between two or more components connected together by one or more additional components. For example, a first component may be coupled to a second component by being directly connected to each other or by being connected by a third component. In some examples, coupling, connection, and attachment may also include mechanical, thermal, electrical, or chemical bonding (such as chemical bonding) in some contexts.

[0019] As used herein, the terms “layer,” “sheet,” and “dressing,” or variations thereof, are used to describe articles having a thickness that is small relative to their length and width.

[0020] As used herein, the term “negative pressure” broadly refers to a local environment outside the sealed therapeutic environment provided by a dressing that is lower than local ambient pressure, such as ambient pressure. Often, local ambient pressure may also be the atmospheric pressure in which the wound site is located. Alternatively, this pressure may be lower than the hydrostatic pressure associated with the tissue at the wound site. Unless otherwise specified, the pressure values ​​described herein are gauge pressures. Similarly, references to an increase in negative pressure typically refer to a decrease in absolute pressure, while a decrease in negative pressure typically refers to an increase in absolute pressure.

[0021] As used herein, the term “wound” can include, for example, chronic wounds, acute wounds, traumatic wounds, subacute wounds, closed surgical wounds or dehiscences, partially thickened burns, ulcers (such as diabetic ulcers, pressure ulcers, or venous insufficiency ulcers), flaps, and grafts. Wounds may also include open abdominal areas of a patient.

[0022] As used herein, the term “wound site” may include tissue sites such as bone tissue, adipose tissue, muscle tissue, nerve tissue, skin tissue, vascular tissue, connective tissue, cartilage, tendons, or ligaments. The term “wound site” may also refer to an area of ​​tissue that is not necessarily a wound or defect, but where additional or promoted tissue growth is desired. For example, negative pressure therapy may be used in a particular tissue area to grow additional tissue that can be harvested or transplanted to another tissue site. A wound site may also include an area where a surgical incision has been previously made.

[0023] Conventionally, negative pressure wound occlusion (NPWT) systems are used to promote wound healing. An NPWT system includes a therapeutic device configured to provide negative pressure wound occlusion by reducing pressure in the wound. This therapeutic device can create a vacuum (relative to atmospheric pressure) in the wound by removing wound exudate, air, and other fluids from the wound. The fluids removed from the wound may be collected in an exudate canister. The therapeutic device can also extract from the wound fluids that can be pre-delivered to the wound (e.g., injection fluids). In some cases, a preset volume of injection fluid is delivered to the wound site along with the application of negative pressure to heal the wound. The injection fluids may include, for example, lavage fluids, prescribed fluids, medicinal fluids, antibiotic fluids, or any other type of fluid that can be delivered to the wound during wound treatment. The injection fluids are held in an injection canister and can be controlledly distributed to the wound via tubing. Furthermore, the NPWT system includes a wound dressing that is placed in the wound and is fluidly connected to an injection canister and an exudate canister.

[0024] Conventional NPWT systems can be cumbersome for outpatients to wear due to their large, rigid therapy units and the stiff tubing connecting the dressing to the electromechanical pump. This can lead to a negative experience for patients. Furthermore, with conventional NPWT systems, attaching tubing with smaller dressings can be difficult in some applications. Moreover, certain NPWT systems may be comfortable and preferred by some patients, while the same NPWT system may be uncomfortable for others, depending on the location of the wound and the patient's lifestyle and preferences.

[0025] This disclosure provides a system for negative pressure wound occlusion (NPWT) of a wound. The system includes a bridge dressing comprising a first bridge end portion adjacent to the wound and a second bridge end portion opposite to the first bridge end portion. The system further includes a pump and a casing spaced apart from the wound. The casing includes a first portion comprising a first internal cavity configured to receive the pump at least partially inside, a second internal cavity spaced apart from the first internal cavity and configured to receive the second bridge end portion of the bridge dressing, and a channel for fluid communication between the first internal cavity and the second internal cavity. The casing further includes a second portion pivotably connected to the first portion and configured to at least partially engage with the first portion in the closed position of the second portion. The second portion includes a third internal cavity aligned with the first internal cavity in the closed position of the second portion, thereby receiving the pump inside the first and third internal cavities. The casing further includes a third portion that is pivotably connected to the first portion and pivotably connected to the first portion independently of the second portion. The third portion is configured to at least partially engage with the first portion in the closed position of the third portion. The third portion covers the second internal cavity in the closed position of the third portion, thereby allowing the second bridge end portion of the bridge dressing to be received between the second internal cavity and the third portion.

[0026] Since the pump is received in the first internal cavity and the second bridge end portion of the bridge dressing is received between the second internal cavity and the third portion, the system of the present disclosure is a compact therapeutic unit for decompression therapy of wounds of various sizes. The system of the present disclosure is beneficial for amblyable patients and can be worn comfortably.

[0027] The third part is pivotably connected to the first part and pivotably movable relative to the first part independently of the second part; therefore, the third part can be pivotably moved relative to the first part between an open position and a closed position, independently of the second part. This allows clinicians to easily replace a used bridge dressing with a new one without needing to access the pump inside the casing.

[0028] In some embodiments, the casing is a single-piece component made from closed-cell foam. In one application, the casing may be web-formed from a flexible closed-cell foam material to reduce costs, thereby providing a flexible housing for the pump. The flexibility of the casing material may allow the casing to conform around the second bridge end portion of the bridge dressing.

[0029] In some embodiments, the first portion is adhesively bonded to the second portion in the closed position of the second portion. In some embodiments, the first portion is adhesively bonded to the third portion in the closed position of the third portion. Once the second bridge end portion of the bridge dressing is received between the second internal cavity and the third portion, the bridge dressing may be cut to a desired length based on different application attributes and patient preferences. Furthermore, the system of this disclosure may be wearable by positioning the casing near the wound.

[0030] In some embodiments, the system further includes a wound dressing configured to be positioned at the wound site of a wound. A bridge dressing extends from the wound dressing. The first bridge end portion of the bridge dressing is connected to the wound dressing. In some embodiments, the wound dressing is integral with the bridge dressing. Therefore, a coupler is not required to connect the bridge dressing to the wound dressing, especially in the case of small wounds. In some embodiments, the system of the present disclosure may further include adhesive patches for securing the casing to the patient's body.

[0031] Therefore, the system of this disclosure may be comfortable for different patients because the casing, including the pump, may be attached to the patient's body or disposed away from the patient's body.

[0032] Replacing conventional tubing with bridge dressings can also improve the overall flexibility of the system of this disclosure, which may lead to a positive experience for patients.

[0033] This disclosure further provides a system for negative pressure wound occlusion (NPWT) of a wound. The system includes a bridge dressing comprising a first bridge end portion adjacent to the wound and a second bridge end portion opposite to the first bridge end portion. The system further includes a tube comprising a first tube end portion and a second tube end portion opposite to the first tube end portion. The system further includes a first manifold disposed around the first tube end portion and fluidically coupled to the tube. The first manifold is connected to the second bridge end portion of the bridge dressing. The system further includes a second manifold disposed around the second tube end portion and fluidically coupled to the tube. The system further includes a pump and a casing spaced away from the wound. The casing includes an internal cavity receiving the pump, an external surface, and channels at least partially disposed on the external surface and in fluid communication with the internal cavity. The second manifold is connected to the outer surface of the casing and is mounted on top of it. The second manifold communicates with the channel and covers the channel.

[0034] Such a system may be beneficial for patients who wish to have the casing remotely positioned away from their body, or for applications requiring remote positioning of the casing away from the patient's body. In some embodiments, the first and second manifolds may be made from flexible injection-molded material or web-treated flexible closed-cell foam. This may provide a positive patient experience.

[0035] Referring here to the drawings, Figure 1 is a schematic perspective view of a system 50 for negative pressure wound therapy (NPWT) of a user's (not shown) wound 52 according to one embodiment of the present disclosure. The system 50 is used to heal a wound 52 through the user's skin (or generally the epidermis). The system 50 includes a pump 110 (shown in Figure 2A) configured to generate negative pressure for NPWT of the wound 52.

[0036] The system 50 further includes a wound dressing 102 configured to be placed on the wound site 54 of a wound 52. In some embodiments, the wound dressing 102 may be an advanced wound care dressing that may be suitable for healing larger wounds. The wound dressing 102 defines a sealed volume (not shown) around the wound 52. The wound dressing 102 may include a foam pad (not shown) placed in the wound 52. The foam pad may be cut so that the shape of the wound 52 is similar to the shape of the foam pad, and the foam pad may be contained within the wound site 54. It should be noted that the foam pad may be replaced with any other manifold material such as microreplica polyurethane, gauze, or nonwoven material.

[0037] The wound dressing 102 may include a foam pad and a sealing member 56 placed on the foam pad to cover the wound site 54. The sealing member 56 may include an adhesive layer (not shown) and a release liner (not shown) disposed on the adhesive layer. The release liner may protect the adhesive layer from contaminants such as dust and debris before use of the sealing member 56. The release liner may be peeled off from the adhesive layer before being removably fixed to the sealing member 56 in the wound 52. The adhesive layer may also include an acrylic adhesive, a silicone adhesive, a hydrocolloid adhesive, or a synthetic rubber adhesive. The foam pad and sealing member 56 may include any shape and size to cover and seal the wound 52 in an appropriate manner. In some embodiments, the wound dressing 102 may further include a contact layer (not shown) which may be placed on the wound 52 before the foam pad is placed on the wound 52 to avoid direct contact between the wound 52 and the foam pad. Details relating to wound dressing 102 as provided herein are essentially illustrative, and it should be noted that wound dressing 102 may include any other combination of designs / materials.

[0038] The sealing member 56 is generally formed from a flexible sheet. The sealing member 56 may be formed from any material that provides a fluid seal. The sealing member 56 may be, for example, an impermeable or semi-permeable elastomeric material. "Elastomer" means having the properties of an elastomer. Elastomer generally refers to polymer materials that have rubber-like properties. More specifically, most elastomers have an ultimate elongation of more than 100% and a considerable amount of elasticity. The elasticity of a material refers to the material's ability to recover from elastic deformation. Examples of elastomers 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, and silicone. Specific examples of sealing material include silicone drapes, 3M Tegaderm® drapes, acrylic drapes such as those available from Avery Dennison, or incision drapes.

[0039] The system 50 further includes a bridge dressing 104 extending from the wound dressing 102. The bridge dressing 104 includes a first bridge end portion 106 connected to the wound dressing 102 and a second bridge end portion 108 opposite the first bridge end portion 106. The first bridge end portion 106 is located proximal to the wound 52. In some embodiments, the wound dressing 102 is integral with the bridge dressing 104. In other words, the bridge dressing 104 and the wound dressing 102 together form a single component. Therefore, a coupler is not required to connect the bridge dressing 104 to the wound dressing 102. This may be useful in some applications, particularly for smaller wounds. In some embodiments, the bridge dressing 104 has a flat tubular shape. In some other embodiments, the bridge dressing 104 and the wound dressing 102 are separate components connected to each other by a coupler. In some embodiments, the bridge dressing 104 is made of a material that prevents collapse when negative pressure is applied for the NPWT of the wound 52. In some embodiments, the material of the bridge dressing 104 may be a nonwoven fabric, a foam, a micro-replica polyurethane, etc.

[0040] The system 50 further includes a casing 100 spaced apart from the wound 52 and the wound dressing 102. Figures 2A to 2D are different views of the casing 100 according to one embodiment of the present disclosure. Figure 2E is an enlarged view of a portion A1 (shown in Figure 2A) of the casing 100 according to one embodiment of the present disclosure. Figure 2F is a side cross-sectional view of a portion A1 along the line A-A' shown in Figure 2E according to one embodiment of the present disclosure. Figure 2G is an enlarged view of a portion A2 (shown in Figure 2C) of the casing 100 according to one embodiment of the present disclosure.

[0041] Referring to Figures 1 to 2G, the casing 100 includes a first section 202 which includes a first internal cavity 204 configured to receive the pump 110 at least partially inside. For illustrative purposes, the pump 110 is shown only in Figure 2A. The first section 202 further includes a second internal cavity 206 which is spaced apart from the first internal cavity 204 and configured to receive the second bridge end section 108 of the bridge dressing 104 inside. The first section 202 further includes a channel 208 which provides fluid communication between the first internal cavity 204 and the second internal cavity 206. The channel 208 will be described in detail later. In some embodiments, the first internal cavity 204 may be interchangeably referred to as “internal cavity 204” as used herein. Thus, the casing 100 includes an internal cavity 204 that receives the pump 110 inside.

[0042] The casing 100 further includes a second portion 210 that is pivotably connected to the first portion 202 and configured to at least partially engage with the first portion 202 in the closed position of the second portion 210. The closed position of the second portion 210 is shown in Figure 1. In Figures 2A to 2D, the closed position of the second portion 210 is not shown for illustrative purposes. The second portion 210 includes a third internal cavity 212 that aligns with the first internal cavity 204 in the closed position of the second portion 210, thereby allowing the pump 110 to be received within the first internal cavity 204 and the third internal cavity 212.

[0043] In the closed position of the second section 2120, the pump 110 is received and sealed within the first internal cavity 204 and the third internal cavity 212, thereby allowing the outlet port (not shown) of the pump 110 to be in fluid communication with the surroundings, and the inlet port (not shown) of the pump 110 to be in fluid communication with the second internal cavity 206 via the channel 208. The second internal cavity 206 is further in fluid communication with the wound via the bridge dressing 104 and the wound dressing 102. This creates a vacuum inside the casing 100 when negative pressure is applied to the wound 52.

[0044] The casing 100 further includes a third portion 214 pivotably connected to the first portion 202 and pivotable relative to the first portion 202 independently of the second portion 210. The third portion 214 is configured to at least partially engage with the first portion 202 in the closed position of the third portion 214. In the closed position of the third portion 214, the third portion 214 covers the second internal cavity 206, thereby allowing the second bridge end portion 108 of the bridge dressing 104 to be received between the second internal cavity 206 and the third portion 214. The closed position of the third portion 214 is shown in Figure 1. In Figures 2A to 2D, the closed position of the third portion 214 is not shown for illustrative purposes. Furthermore, when the second bridge end portion 108 of the bridge dressing 104 is received between the second internal cavity 206 and the third portion 214, the material of the bridge dressing 104 prevents the bridge dressing 104 from collapsing in the closed position of the third portion 214.

[0045] In some embodiments, the system 50 further includes an electronic unit 112 (shown in Figure 2A for illustrative purposes only) which is housed within the first internal cavity 204 and the third internal cavity 212 in the closed position of the second portion 210. The electronic unit 112 may include a printed circuit board, wiring, and other electronic components for controlling the operating parameters of the pump 110. In some embodiments, the casing 100 may include an input button that can be accessed by a clinician to switch the electronic unit 112 on and off. In some embodiments, the casing 100 may further include a visual indicator for checking various parameters related to the electronic unit 112, such as the status of remaining battery power.

[0046] In some embodiments, the casing 100 further includes a first living hinge 216 (shown in Figure 2B) that pivotably connects a first portion 202 to a second portion 210. The casing 100 further includes a second living hinge 218 (shown in Figure 2B), separate from the first living hinge 216, that pivotably connects the first portion 202 to a third portion 214. In some embodiments, the casing 100 further defines a gap G disposed between the second portion 210 and the third portion 214, thereby allowing the second portion 210 and the third portion 214 to pivot independently of each other relative to the first portion 202. In other words, the third portion 214 is pivotably movable relative to the first portion 202, independently of the second portion 210. Similarly, the second portion 210 is pivotably movable relative to the first portion 202, independently of the third portion 214.

[0047] In some embodiments, the area of ​​each of the first internal cavity 204 and the third internal cavity 212 is larger than the area of ​​the second internal cavity 206. In some other embodiments, the area of ​​each of the first internal cavity 204 and the third internal cavity 212 is less than or equal to the area of ​​the second internal cavity 206. In some embodiments, the first internal cavity 204 and the third internal cavity 212 have similar shapes and dimensions. In some other embodiments, the first internal cavity 204 and the third internal cavity 212 may have different shapes and dimensions.

[0048] The first portion 202 further includes a first outer periphery P1, a first inner surface 220, and a first outer surface 222 facing the first inner surface 220. The first inner surface 224 is at least partially bounded by the first outer periphery P1. In some embodiments, the first outer surface 222 may be interchangeably referred to herein as “outer surface 222”. The first inner surface 220 of the first portion 202 at least partially engages with the second portion 210 in the closed position of the second portion 210, and at least partially engages with the third portion 214 in the closed position of the third portion 214.

[0049] The second portion 210 further includes a second outer periphery P2, a second inner surface 224, and a second outer surface 226 facing the second inner surface 224. The second inner surface 224 is at least partially bounded by the second outer periphery P2. The second inner surface 224 of the second portion 210 at least partially engages with the first portion 202 in the closed position of the second portion 210.

[0050] In some embodiments, the first portion 202 is adhesively bonded to the second portion 210 in the closed position of the second portion 210. In some cases, an adhesive may be applied to at least one of the first inner surface 220 of the first portion 202 and the second inner surface 224 of the second portion 210 so that the second inner surface 224 of the second portion 210 remains engaged with the first inner surface 220 of the first portion 202 in the closed position of the second portion 210. Furthermore, the adhesive may be a pressure-sensitive adhesive.

[0051] In some embodiments, the first portion 202 is adhesively bonded to the third portion 214 in the closed position of the third portion 214. In some cases, an adhesive may be applied to at least one of the first inner surface 220 of the first portion 202 and the third portion 214 so that the third portion 214 is maintained engaged with the first inner surface 220 of the first portion 202 in the closed position of the third portion 214. The adhesive may be a pressure-sensitive adhesive or a peelable adhesive.

[0052] Once the second bridge end portion 108 of the bridge dressing 104 is received between the second internal cavity 206 and the third portion 214, the bridge dressing 104 may be cut to a desired length based on different application attributes and patient preferences. Furthermore, the system 50 may be wearable by positioning the casing 100 near the wound 52.

[0053] In some embodiments, the casing 100 is a single-piece component made from closed-cell foam. In one application, the casing 100 may be web-formed from a flexible closed-cell foam material to reduce costs, thereby providing a flexible housing for the pump 110. The flexible material of the casing 100 may allow the casing 100 to fit around the second bridge end portion 108 of the bridge dressing 104.

[0054] In some embodiments, the first portion 202 further includes an inclined surface 228 that slopes from the first inner surface 220 toward the first outer surface 222. The first portion 202 further includes a peripheral section 230 that extends from the first inner surface 220 toward the inclined surface 228. The peripheral section 230 at least partially encloses the inclined surface 228. Specifically, the peripheral section 230 encloses the inclined surface 228 from three sides. In some embodiments, the first portion 202 further includes an intermediate section 232 disposed between the first internal cavity 204 and the second internal cavity 206. The intermediate section 232 at least partially defines the first inner surface 220.

[0055] In some embodiments, the first portion 202 further includes a plurality of first lateral recesses 234 disposed adjacent to a second internal cavity 206 opposite the first internal cavity 204, and a plurality of first lateral ribs 236 alternating with the plurality of first lateral recesses 234. The second portion 210 further includes a plurality of second lateral recesses 238 spaced apart from the third internal cavity 212, and a plurality of second lateral ribs 240 alternating with the plurality of second lateral recesses 238. In the closed position of the third portion 214, the plurality of first lateral recesses 234 are aligned with the plurality of second lateral recesses 238, and at least partially receive the bridge dressing 104 between them. Specifically, in the closed position of the third portion 214, the plurality of first transverse recesses 234 and the plurality of second transverse recesses 238 receive the second bridge end portion 108 of the bridge dressing 104 between them. The presence of the plurality of first transverse recesses 234, the plurality of first transverse ribs 236, the plurality of second transverse recesses 238, and the plurality of second transverse ribs 240 can improve the fit of the casing 100 around the bridge dressing 104.

[0056] In some embodiments, the channel 208 includes a first channel portion C1 that is fluidly connected to a first internal cavity 204 and extends through a first portion 202 from the first internal cavity 204 to a first external surface 222. The channel 208 further includes a second channel portion C2 (shown in Figure 2B) that is fluidly connected to the first channel portion C1 and extends toward a second internal cavity 206. The second channel portion C2 is located on the first external surface 222 and is inclined relative to the first channel portion C1. Thus, the casing 100 includes a channel 208 that is at least partially located on the external surface 222 and fluidly connected to the internal cavity 204. In some embodiments, the first channel portion C1 is perpendicular to the second channel portion C2.

[0057] The channel 208 further includes a third channel portion C3 disposed in fluid communication with the second channel portion C2 and extending through the first portion 202 toward the second internal cavity 206. The third channel portion C3 is inclined with respect to the second channel portion C2. In some embodiments, the third channel portion C3 is perpendicular to the second channel portion C2. In some embodiments, the first channel portion C1 is parallel to the third channel portion C3. The channel 208 further includes a fourth channel portion C4 that fluidly communicates the third channel portion C3 with the second internal cavity 206. The fourth channel portion C4 is inclined with respect to the third channel portion C3. In some embodiments, the fourth channel portion C4 is perpendicular to the third channel portion C3. In some embodiments, the second channel portion C2 is parallel to the fourth channel portion C4. Furthermore, the fourth channel portion C4 is a notch formed in the intermediate section 232 and located adjacent to the second internal cavity 206.

[0058] In some embodiments, the system 50 further includes a drape 242 (shown as transparent for illustrative purposes) bonded to the first outer surface 222 of the first portion 202 and configured to seal and cover the second channel portion C2 of the channel 208. The drape 242 may be a flexible sheet or sealing film for restricting any fluid communication between the surroundings and the second channel portion C2 of the channel 208. The drape 242 may be adhesively bonded to the first outer surface 222 of the first portion 202.

[0059] In some embodiments, each of the first internal cavity 204 and the third internal cavity 212 includes a rectangular flat surface 244 and a rectangular peripheral section 246 extending from and surrounding the rectangular flat surface 244.

[0060] Figure 3 is a schematic top view of system 50' for NPWT of wound 52 according to another embodiment of the present disclosure. System 50' is substantially similar to system 50 in Figure 1, and common components are indicated by the same reference numerals. However, in system 50', the second bridge end portion 108 of the bridge dressing 104 is not received between the second internal cavity 206 and the third portion 214. In system 50', the second bridge end portion 108 of the bridge dressing 104 is connected to and disposed on the outer surface 222 of the casing 100, and the second bridge end portion 108 is in fluid communication with and covers the channel 208 (also shown in Figure 2B). Thus, in system 50', the second bridge end portion 108 of the bridge dressing 104 is disposed on the outer surface 222 of the casing 100 and is not received within the second internal cavity 206 of the first portion 202 of the casing 100.

[0061] In some embodiments, system 50' further includes a drape 248 that adhesively bonds the second bridge end portion 108 to the outer surface 222 of the casing 100 and seals and covers the second bridge end portion 108. The drape 248 may also be an adhesive patch that adhesively bonds the second bridge end portion 108 to the outer surface 222 of the casing 100 and secures the casing 100 to the patient's body. Thus, system 50' can be used in applications where the casing 100 needs to be placed on the patient's body. Since the casing 100, including the pump 110, can be bonded to the patient's body, system 50' may be comfortable for different patients.

[0062] Figure 4 is a schematic top view of system 50'' for NPWT of wound 52 according to another embodiment of the present disclosure. System 50'' is substantially similar to system 50' in Figure 3, and common components are indicated by the same reference numerals. However, in system 50'', the second bridge end portion 108 of the bridge dressing 104 is not connected to and not disposed on the outer surface 222 of the casing 100.

[0063] System 50'' further includes a tube 114, which includes a first tube end portion 116 and a second tube end portion 118 opposite the first tube end portion 116. System 50'' further includes a first manifold 120 disposed around the first tube end portion 116 and fluidically coupled to the tube 114. The first manifold 120 is connected to a second bridge end portion 108 of the bridge dressing 104. System 50'' further includes a second manifold 122 disposed around the second tube end portion 118 and fluidly coupled to the tube 114. The second manifold 122 is connected to and disposed on the outer surface 222 of the casing 100. The second manifold 122 is in fluid communication with and covers the channel 208. When the first manifold 120 and the second manifold 122 are fluidly coupled to the tube 114, the first manifold 120 is indirectly fluid-communicated with the second manifold 122 via the tube 114. Since the first manifold 120 is connected to the bridge dressing 104 and the second manifold 122 is in fluid-communicated with the channel 208, the bridge dressing 104 is indirectly fluid-communicated with the channel 208 of the casing 100. Thus, the pump 110 can generate negative pressure in the wound 52 through the channel 208, the first manifold 120, the second manifold 122, the tube 114, the bridge dressing 104, and the wound dressing 102. The first manifold 120 and the second manifold 122 may include foam pads made from a flexible injection-molded material or a web-treated flexible closed-cell foam.

[0064] In some embodiments, system 50'' further includes a first adhesive film 124 that adhesively bonds the first manifold 120 to the second bridge end portion 108 of the bridge dressing 104. The first adhesive film 124 seals and covers the first manifold 120. System 50'' further includes a second adhesive film 126 that adhesively bonds the second manifold 122 to the outer surface 222 of the casing 100. The second adhesive film 126 seals and covers the second manifold 122. The first manifold 120, the second manifold 122, the first adhesive film 124, and the second adhesive film 126 are shown transparent in Figure 4 for illustrative purposes.

[0065] System 50'' may be beneficial for patients who wish to remotely position the casing 100 away from their body, or for applications requiring remote positioning of the casing 100 away from the patient's body. In some embodiments, the first manifold 120 and the second manifold 122 may be made from a flexible injection-molded material or a web-treated flexible closed-cell foam. This may provide a positive patient experience.

[0066] Figures 5A to 5D are different diagrams of the casing 100' according to another embodiment of the present disclosure. Figure 5E is an enlarged view of a portion B1 (shown in Figure 5A) of the casing 100' according to an embodiment of the present disclosure. Figure 5F is a side cross-sectional view of a portion B1 along the line B-B' shown in Figure 5E, according to one embodiment of the present disclosure. Figure 5G is an enlarged view of a portion B2 (shown in Figure 5C) of the casing 100' according to one embodiment of the present disclosure. The casing 100' is substantially similar to the casing 100 shown in Figures 2A to 2D, and common components are indicated by the same reference numerals. The length of the second channel portion C2 of the casing 100' (shown in Figure 5B) is longer than the length of the second channel portion C2 of the casing 100 shown in Figure 2B.

[0067] Referring to Figures 5A to 5G, in casing 100', the first portion 202 includes an inclined surface 228' substantially similar to the inclined surface 228 of casing 100 (shown in Figure 2C). However, the inclined surface 228 of casing 100 has different dimensions from the inclined surface 228' of casing 100'. Specifically, the area of ​​the inclined surface 228' is smaller than the area of ​​the inclined surface 228. In casing 100', the first portion 202 further includes a peripheral section 230' extending from the first inner surface 220 to the inclined surface 228'. The peripheral section 230' at least partially surrounds the inclined surface 228'. In casing 100', the fourth channel portion C4 is a notch formed in the peripheral section 230'.

[0068] In casing 100', the first portion 202 further includes an intermediate section 232' disposed between the first internal cavity 204 and the second internal cavity 206. The intermediate section 232' at least partially defines the first inner surface 220. The intermediate section 232' is substantially similar to the intermediate section 232 of casing 100 shown in Figure 2A. However, the intermediate section 232 of casing 100 has different dimensions from the intermediate section 232' of casing 100'. Specifically, the area of ​​the intermediate section 232 is smaller than the area of ​​the intermediate section 232'.

[0069] In the casing 100', the first portion 202 further includes a plurality of first transverse recesses 234 disposed adjacent to a second internal cavity 206 opposite to the first internal cavity 204, and a plurality of first transverse ribs 236' alternating with the plurality of first transverse recesses 234'. The plurality of first transverse recesses 234' are substantially similar to the plurality of first transverse recesses 234 of the casing 100 shown in Figure 2A. However, the length of the plurality of first transverse recesses 234' is shorter than the length of the plurality of first transverse recesses 234 shown in Figure 2A. Furthermore, the plurality of first transverse ribs 236' are substantially similar to the plurality of first transverse ribs 236 of the casing 100 shown in Figure 2A. However, the length of the plurality of first transverse ribs 236' is shorter than the length of the plurality of first transverse ribs 236 shown in Figure 2A.

[0070] In the casing 100', the second portion 210 further includes a plurality of second lateral recesses 238' spaced apart from the third internal cavity 212, and a plurality of second lateral ribs 240' alternating with the plurality of second lateral recesses 238'. The plurality of second lateral recesses 238' are substantially the same as the plurality of second lateral recesses 238 of the casing 100 shown in Figure 2A. However, the length of the plurality of second lateral recesses 238' is shorter than the length of the plurality of second lateral recesses 238 shown in Figure 2A. Furthermore, the plurality of second lateral ribs 240' are substantially the same as the plurality of second lateral ribs 240 of the casing 100 shown in Figure 2A. However, the length of the plurality of second lateral ribs 240' is shorter than the length of the plurality of second lateral ribs 240 shown in Figure 2A.

[0071] In some embodiments, the first portion 202 extends into a first internal cavity 204 and includes a first wedge 250 with a first wedge surface 252. The first channel portion C1 extends from the first wedge surface 252 at least partially through the first wedge 250. In other words, the first channel portion C1 extends from the first wedge surface 252 to the first outer surface 222.

[0072] In some embodiments, the second portion 210 extends from a third internal cavity 212 and further includes a second wedge 254, which includes a second wedge surface 256. The second wedge surface 256 is configured to lock into a first wedge surface 252 of the first wedge 250 when the second portion 210 is in a closed position. The engagement of the second wedge surface 256 and the first wedge surface 252 can isolate the second bridge end portion 108 of the bridge dressing 104 from the pump 110, preventing any leakage into the wound 52 through the pump 110.

[0073] In the casing 100', each of the first internal cavity 204 and the third internal cavity 212 does not include a rectangular plane (i.e., the rectangular plane 244 shown in Figure 2A). In some embodiments, the first portion 202 further includes a pair of first raised surfaces 258 spaced apart from each other. The first portion 202 further includes a first recessed surface 260 extending between the pair of first raised surfaces 258. The first recessed surface 260 is positioned below the pair of first raised surfaces 258 with respect to the first inner surface 220. The first portion 202 further includes a pair of first connecting surfaces 262 (shown in Figure 5C) corresponding to the pair of first raised surfaces 258. Each of the pair of first connecting surfaces 262 extends from the first recessed surface 260 to the corresponding first raised surface 258 of the pair of first raised surfaces 258. Therefore, the first recessed surface 260 and the pair of first connecting surfaces 262 together can form a U-shaped configuration. The first portion 202 further includes a first peripheral section 264 (shown in Figure 5C) that extends from and surrounds the pair of first raised surfaces 258. The first peripheral section 264 also surrounds the first recessed surface 260 and the pair of first connecting surfaces 262. The first peripheral section 264 further extends to the first inner surface 220. The first peripheral section 264 connects each of the pair of first raised surfaces 258 to the intermediate section 232'. The pair of first raised surfaces 258, the first recessed surface 360, the pair of first connecting surfaces 262, and the first peripheral section 264 together define the first internal cavity 204.

[0074] In some embodiments, the second portion 210 further includes a pair of second raised surfaces 266 spaced apart from each other. The second portion 210 further includes a second recessed surface 268 extending between the pair of second raised surfaces 266. The second recessed surface 268 is positioned below the pair of second raised surfaces 266 relative to the second inner surface 224. The second portion 210 further includes a pair of second connecting surfaces 270 (shown in Figure 5C) corresponding to the pair of second raised surfaces 266. Each of the pair of second connecting surfaces 270 extends from the second recessed surface 268 to the corresponding second raised surface 266 of the pair of second raised surfaces 266. Thus, the second recessed surface 268 and the pair of second connecting surfaces 270 can together form a U-shaped configuration. The second portion 210 further includes a second peripheral section 272 (shown in Figure 5C) that extends from and surrounds a pair of second raised surfaces 266. The second peripheral section 272 also surrounds a second recessed surface 268 and a pair of second connecting surfaces 270. The second peripheral section 272 further extends to a second inner surface 224. The pair of second raised surfaces 266, the second recessed surface 268, the pair of second connecting surfaces 270, and the second peripheral section 272 together define a third internal cavity 212.

[0075] The functional advantages of casing 100' are the same as those of casing 100 (shown in Figures 2A to 2D). In some embodiments, system 50' (shown in Figure 3) may also include casing 100' (instead of casing 100). In some embodiments, system 50'' (shown in Figure 4) may also include casing 100' (instead of casing 100).

[0076] Figures 6A to 6D are different diagrams of casing 100'' according to another embodiment of the present disclosure. Casing 100'' is substantially similar to casing 100' shown in Figures 5A to 5D, and common components are indicated by the same reference numerals. However, in the casing 100'', the first portion 202 does not include an inclined surface (i.e., the inclined surface 228' shown in Figure 5C), an intermediate section (i.e., the intermediate section 232' shown in Figure 5C), different channel portions of the channel 208 (shown in Figures 5A to 5G), any wedges (i.e., the first wedge 250 and the second wedge 254), a drape (i.e., the drape 242 shown in Figure 5B), a plurality of first transverse recesses (i.e., a plurality of first transverse recesses 234' shown in Figure 5C), a plurality of first transverse ribs (i.e., a plurality of first transverse ribs 236' shown in Figure 5C), a plurality of second transverse recesses (i.e., a plurality of second transverse recesses 238' shown in Figure 5C), and a plurality of second transverse ribs (i.e., a plurality of second transverse ribs 240' shown in Figure 5C).

[0077] In casing 100'', the first portion 202 further includes a first wall 274 separating the first internal cavity 204 from the second internal cavity 206. A pair of first raised surfaces 258 extend from the first wall 274 to the first outer periphery P1 of the first portion 202 opposite the second internal cavity 206. Furthermore, a first recessed surface 260 extends from the first wall 274 to the first outer periphery P1 of the first portion 202 opposite the second internal cavity 206. Furthermore, in casing 100'', the channel 208 includes an open slot 276 extending through the first wall 274 from the first internal cavity 204 to the second internal cavity 206. The channel 208 is located inside the open slot 276 as it extends through the first wall 274. Since the outer surface 222 does not have a channel (i.e., the channel 208 is located inside), the casing 100'' does not need to be incorporated into the system 50' (shown in Figure 3).

[0078] In some embodiments, the second portion 210 further includes a second wall 278 disposed adjacent to the third internal cavity 212 and configured to engage with the first wall 274 in the closed position of the second portion 210. The open slot 276 is covered by the second wall 278 in the closed position of the second portion 210.

[0079] In some embodiments, the first portion 202 further includes a flat surface 280 extending from a first wall 274 to a first outer perimeter P1 of the first portion 202 opposite the first internal cavity 204. In some embodiments, the flat surface 280 is a rectangular flat surface. The first portion 202 further includes a pair of inclined surfaces 282 extending from the opposite side of the flat surface 280 and inclined with respect to the flat surface 280. Each of the pair of inclined surfaces 282 extends from the first wall 274 to a first outer perimeter P1 of the first portion 202 opposite the first internal cavity 204. The flat surface 280, the pair of inclined surfaces 282, and the first wall 274 of the first portion 202 together define a second internal cavity 206. The second internal cavity 206 opens at the first outer perimeter P1 opposite the first wall 274. Since the second internal cavity 206 is open at the first outer circumference P1, the second bridge end portion 108 of the bridge dressing 104 can be easily inserted and received between the second internal cavity 206 and the third portion 214.

[0080] In some embodiments, the third portion 214 includes a plurality of first longitudinal recesses 284 spaced apart from the third internal cavity 212, and a plurality of first longitudinal ribs 286 alternating with the plurality of first longitudinal recesses 284. The plurality of first longitudinal recesses 284 are located proximal to the second living hinge 218 (shown in Figure 6B). The third portion 214 further includes a plurality of second longitudinal recesses 288 spaced apart from the third internal cavity 212, and a plurality of second longitudinal ribs 290 alternating with the plurality of second longitudinal recesses 288. The plurality of second longitudinal recesses 288 are located distal to the second living hinge 218. Furthermore, at least one of the plurality of first longitudinal recesses 284 and at least one of the plurality of second longitudinal recesses 288 at least partially engage with the bridge dressing 104 in the closed position of the third portion 214.

[0081] Unless otherwise indicated, all numbers used in this specification and the claims to represent feature sizes, quantities, and physical properties should be understood as being modified by the term "approximately." Therefore, unless otherwise indicated, the numerical parameters described in the foregoing specification and the appended claims are approximations that may vary depending on the desired properties that a person skilled in the art would seek to obtain using the teachings of this disclosure.

[0082] While specific embodiments have been illustrated and described herein, it will be understood by those skilled in the art that these specific embodiments can be replaced by various alternative and / or equivalent implementations without departing from the scope of this disclosure. This application is intended to encompass any modifications or variations of the specific embodiments discussed herein. Accordingly, this disclosure is intended to be limited only by the claims and their equivalents.

Claims

1. A system for negative pressure wound occlusion (NPWT) of wounds, A bridge dressing comprising a first bridge end portion adjacent to the wound and a second bridge end portion opposite to the first bridge end portion, Pump and A casing spaced apart from the aforementioned wound, A first part comprising: a first internal cavity configured to at least partially receive the pump inside; a second internal cavity spaced apart from the first internal cavity and configured to receive the second bridge end portion of the bridge dressing inside; and a channel that allows the first internal cavity to fluidly communicate with the second internal cavity, A second part is pivotably connected to the first part and configured to at least partially engage with the first part in the closed position of the second part, the second part comprising a third internal cavity aligned with the first internal cavity in the closed position of the second part so that the pump is received within the first internal cavity and the third internal cavity, A system comprising: a casing having a third portion, the third portion being pivotably connected to the first portion and pivotably movable relative to the first portion independently of the second portion, wherein the third portion is configured to at least partially engage with the first portion in the closed position of the third portion, the third portion covering the second internal cavity in the closed position of the third portion, thereby the second bridge end portion of the bridge dressing being received between the second internal cavity and the third portion.

2. The first part is, The first outer perimeter and A first inner surface and a first outer surface facing the first inner surface, wherein the first inner surface of the first portion at least partially engages with the second portion in the closed position of the second portion and at least partially engages with the third portion in the closed position of the third portion, A first wall separates the first internal cavity from the second internal cavity, A pair of first raised surfaces that are spaced apart from each other and extend from the first wall toward the first outer circumference of the first portion opposite the second internal cavity, A first recessed surface extending from the first wall toward the first outer circumference of the first portion opposite the second internal cavity, the first recessed surface further extending between the pair of first raised surfaces and disposed below the pair of first raised surfaces with respect to the first internal surface, A pair of first connecting surfaces corresponding to the pair of first raised surfaces, each of the pair of first connecting surfaces extending from the first recessed surface to the corresponding first raised surface of the pair of first raised surfaces, The device further comprises a first peripheral section extending from and surrounding the pair of first raised surfaces, the first recessed surface, and the pair of first connecting surfaces, and further extending to the first inner surface, The system according to claim 1, wherein the pair of first raised surfaces, the first recessed surface, the pair of first connecting surfaces, and the first peripheral section together define the first internal cavity.

3. The system according to claim 2, wherein the channel comprises an open slot extending from the first internal cavity to the second internal cavity through the first wall.

4. The system according to claim 3, wherein the second portion further comprises a second wall disposed adjacent to the third internal cavity and configured to engage with the first wall in the closed position of the second portion, and the open slot is covered by the second wall in the closed position of the second portion.

5. The first part is, The first outer perimeter and A first wall separates the first internal cavity from the second internal cavity, A flat surface extending from the first wall to the first outer periphery of the first portion opposite the first internal cavity, A pair of inclined surfaces extending from opposite sides of the flat surface and inclined with respect to the flat surface, each of the pair of inclined surfaces further comprising a pair of inclined surfaces extending from the first wall to the first outer circumference of the first portion opposite the first internal cavity, The system according to claim 1, wherein the flat surface, the pair of inclined surfaces, and the first wall of the first portion together define a second internal cavity, the second internal cavity opening on the first outer circumference opposite the first wall.

6. The second part mentioned above is, The second outer perimeter and A second inner surface and a second outer surface facing the second inner surface, wherein the second inner surface of the second portion engages at least partially with the first portion in the closed position of the second portion, A pair of second raised surfaces spaced apart from each other, A second recessed surface extending between the pair of second raised surfaces, the second recessed surface being disposed below the pair of second raised surfaces with respect to the second inner surface, A pair of second connecting surfaces corresponding to the pair of second raised surfaces, each of the pair of second connecting surfaces having a pair of second connecting surfaces extending from the second recessed surface to the corresponding second raised surface of the pair of second raised surfaces, The device further comprises a second peripheral section extending from and surrounding the pair of second raised surfaces, the second recessed surface, and the pair of second connecting surfaces, and further extending to the second inner surface, The system according to claim 1, wherein the pair of second raised surfaces, the second recessed surface, the pair of second connecting surfaces, and the second peripheral section together define the third internal cavity.

7. The aforementioned casing is A first living hinge pivotably connects the first part to the second part, The system according to claim 1, further comprising: a second living hinge, which is separate from the first living hinge and pivotably connects the first portion to the third portion.

8. The third part above is, A plurality of first longitudinal recesses spaced apart from the third internal cavity, and a plurality of first longitudinal ribs alternating with the plurality of first longitudinal recesses, wherein the plurality of first longitudinal recesses and the plurality of longitudinal ribs are arranged proximal to the second living hinge, A plurality of second longitudinal recesses spaced apart from the third internal cavity, and a plurality of second longitudinal ribs alternating with the plurality of second longitudinal recesses, wherein the plurality of second longitudinal recesses and the plurality of second longitudinal ribs are arranged distal to the second living hinge, The system according to claim 7, wherein at least one of the plurality of first longitudinal recesses and at least one of the plurality of second longitudinal recesses engage at least partially with the bridge dressing in the closed position of the third portion.

9. The system according to claim 1, further comprising an electronic equipment unit received in the first internal cavity and the third internal cavity in the closed position of the second portion.

10. The system according to claim 1, wherein the casing further defines a gap between the second portion and the third portion, thereby enabling the second portion and the third portion to pivot independently of each other relative to the first portion.

11. The system according to claim 1, wherein each of the first internal cavity and the third internal cavity comprises a rectangular flat surface and a rectangular peripheral section extending from and surrounding the rectangular flat surface.

12. The system according to claim 1, wherein the area of ​​the first internal cavity and the third internal cavity are each larger than the area of ​​the second internal cavity.

13. The system according to claim 1, wherein the first internal cavity and the third internal cavity have similar shapes and dimensions.

14. The first part is, A first inner surface and a first outer surface facing the first inner surface, wherein the first inner surface of the first portion at least partially engages with the second portion in the closed position of the second portion and at least partially engages with the third portion in the closed position of the third portion, The system according to claim 1, further comprising: an inclined surface inclined from the first inner surface toward the first outer surface; and a peripheral section extending from the first inner surface to the inclined surface, wherein the peripheral section at least partially surrounds the inclined surface.

15. The aforementioned channel is A first channel portion is disposed in fluid communication with the first internal cavity and extends through the first portion from the first internal cavity to the first outer surface, A second channel portion is disposed in fluid communication with the first channel portion and extends toward the second internal cavity, the second channel portion is disposed on the outer surface of the first channel portion and is inclined with respect to the first channel portion, A third channel portion is disposed in fluid communication with the second channel portion, extends through the first portion toward the second internal cavity, and is inclined with respect to the second channel portion, The system according to claim 14, further comprising: a fourth channel portion that fluidly communicates the third channel portion with the second internal cavity, the fourth channel portion being inclined with respect to the third channel portion.

16. The system according to claim 15, wherein the first channel portion is parallel to the third channel portion, the first channel portion is perpendicular to the second channel portion, and the second channel portion is parallel to the fourth channel portion.

17. The system according to claim 15, wherein the first portion further comprises an intermediate section disposed between the first internal cavity and the second internal cavity, the intermediate section at least partially defining the first inner surface, and the fourth channel portion is a notch formed in the intermediate section and disposed adjacent to the second internal cavity.

18. The system according to claim 15, wherein the first portion extends into the first internal cavity and further comprises a first wedge having a first wedge surface, and the first channel portion extends from the first wedge surface at least partially through the first wedge.

19. The system according to claim 18, wherein the second portion extends from the third internal cavity and further comprises a second wedge having a second wedge surface, the second wedge surface being configured to lock-engage with the first wedge surface of the first wedge in the closed position of the second portion.

20. The system according to claim 15, further comprising a drape, which is coupled to the first outer surface of the first portion and configured to seal and cover the second channel portion of the channel.

21. The system according to claim 1, wherein the first portion further comprises a plurality of first lateral recesses disposed adjacent to the second internal cavity opposite the first internal cavity, and a plurality of first lateral ribs alternating with the plurality of first lateral recesses, the second portion further comprises a plurality of second lateral recesses spaced apart from the third internal cavity, and a plurality of second lateral ribs alternating with the plurality of lateral recesses, and in the closed position of the third portion, the plurality of first lateral recesses align with the plurality of second lateral recesses and at least partially receive the bridge dressing between them.

22. The system according to claim 1, wherein the casing is an integrated component made from closed-cell foam.

23. The system according to claim 1, further comprising a wound dressing configured to be placed on the wound site of the wound, wherein the bridge dressing extends from the wound dressing, and the first bridge end portion of the bridge dressing is connected to the wound dressing.

24. The system according to claim 23, wherein the wound dressing is integrated with the bridge dressing.

25. The system according to claim 1, wherein the first portion is adhesively bonded to the second portion at the closed position of the second portion.

26. The system according to claim 1, wherein the first portion is adhesively bonded to the third portion at the closed position of the third portion.

27. A system for negative pressure wound occlusion (NPWT) of wounds, A bridge dressing comprising a first bridge end portion adjacent to the wound and a second bridge end portion opposite to the first bridge end portion, Pump and A casing spaced apart from the aforementioned wound, the casing comprising an internal cavity for receiving the pump, an external surface, and a channel at least partially disposed on the external surface and in fluid communication with the internal cavity, A system wherein the second bridge end portion of the bridge dressing is connected to and disposed on the outer surface of the casing, and the second bridge end portion is in fluid communication with and covers the channel.

28. The system according to claim 27, further comprising a drape that adhesively bonds the second bridge end portion to the outer surface of the casing and seals and covers the second bridge end portion.

29. The system according to claim 27, wherein the casing is an integrated component made from closed-cell foam.

30. The system according to claim 27, further comprising a wound dressing configured to be placed on the wound site of the wound, wherein the bridge dressing extends from the wound dressing, and the first bridge end portion of the bridge dressing is connected to the wound dressing.

31. The system according to claim 30, wherein the wound dressing is integrated with the bridge dressing.

32. A system for negative pressure wound occlusion (NPWT) of wounds, A bridge dressing comprising a first bridge end portion adjacent to the wound and a second bridge end portion opposite to the first bridge end portion, A tube comprising a first tube end portion and a second tube end portion opposite to the first tube end portion, A first manifold disposed around the first tube end portion and fluidly coupled to the tube, the first manifold connected to the second bridge end portion of the bridge dressing, A second manifold is disposed around the end portion of the second tube and is fluidly coupled to the tube, Pump and A casing spaced apart from the aforementioned wound, the casing comprising an internal cavity for receiving the pump, an external surface, and a channel at least partially disposed on the external surface and in fluid communication with the internal cavity, The system comprises a second manifold connected to and disposed on the outer surface of the casing, the second manifold in fluid communication with the channel, and covering the channel.

33. The system according to claim 32, wherein the casing is an integrated component made from closed-cell foam.

34. The system according to claim 32, further comprising a wound dressing configured to be placed over the wound site of the wound, wherein the bridge dressing extends from the wound dressing and the first bridge end portion of the bridge dressing is connected to the wound dressing.

35. The system according to claim 34, wherein the wound dressing is integrated with the bridge dressing.

36. A first adhesive film for bonding the first manifold to the second bridge end portion of the bridge dressing, wherein the first adhesive film seals and covers the first manifold, The system according to claim 32, further comprising: a second adhesive film for adhesively bonding the second manifold to the outer surface of the casing, wherein the second adhesive film seals and covers the second manifold.

Images