Source: https://patents.google.com/patent/JP5850467B2/en
Timestamp: 2019-12-09 11:49:47
Document Index: 512814801

Matched Legal Cases: ['Application No. 61', 'Application No. 61', 'Application No. 61', 'Application No. 61', 'Application No. 61', 'Application No. 61', 'Application No. 61', 'Application No. 61', 'Application No. 61', 'Application No. 61', 'Application No. 61', 'art 200', 'art 300']

JP5850467B2 - Decompression / compression system and device for curved body parts - Google Patents
Decompression / compression system and device for curved body parts Download PDF
JP5850467B2
JP5850467B2 JP2013150463A JP2013150463A JP5850467B2 JP 5850467 B2 JP5850467 B2 JP 5850467B2 JP 2013150463 A JP2013150463 A JP 2013150463A JP 2013150463 A JP2013150463 A JP 2013150463A JP 5850467 B2 JP5850467 B2 JP 5850467B2
JP2013150463A
JP2014000413A (en
ウィルクス，ロバート，ペイトン
2013-07-19 Application filed by ケーシーアイ ライセンシング インコーポレイテッド, ケーシーアイ ライセンシング インコーポレイテッド filed Critical ケーシーアイ ライセンシング インコーポレイテッド
2013-12-20 First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=40809887&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JP5850467(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
2014-01-09 Publication of JP2014000413A publication Critical patent/JP2014000413A/en
2016-02-03 Publication of JP5850467B2 publication Critical patent/JP5850467B2/en
RELATED APPLICATIONS The present invention relates to US Provisional Application No. 61 / 057,807 “Reduced-pressure Surgical Wound Treatment System” filed May 30, 2008, US Provisional Application No. 61/057, filed May 30, 2008. 798 “Dressing Assembly For Subcutaneous Wound Treatment Using Reduce Pressure”, US Provisional Application No. 61 / 057,808 “See-Through, Reduced-Pressure Dressing” filed May 30, 2008, filed May 30, 2008 US Provisional Application No. 61 / 057,802 “Reduced-Pressure Dressing Assembly For Use in Applying a Closing Force”, US Provisional Application No. 61 / 057,803 filed May 30, 2008 “Reduced-Pressure, Linear -Wound Treatment System ", US Provisional Application No. 61 / 057,800," Reduced-Pressure, Compression Sytstem and Apparatus for use on a Curved Body Part ", filed May 30, 2008, May 2008 US Provisional Application No. 61 / 057,797 “Reduced-Pressure, Compression Sytstem and Apparatus for use on Breast Tissue” filed on 0th, US Provisional Application No. 61 / 057,805 filed May 30, 2008 “Super” -Absorbent, Reduced-Pressure Wound Dressing and System ", US Provisional Application No. 61 / 057,810 filed May 30, 2008," Reduced-Pressure, Compression System and Apparatus for use on a Joint ", December 2008 US Provisional Application No. 61 / 121,362 “Reduced-Pressure Wound Treatment System Employing an Anisotropic Drape” filed 10 days, and US Provisional Application No. 61 / 144,067 “Reduced-Pressure” filed January 12, 2009 , Compression System and Apparatus for use on a Joint ", claim the benefit of 35 USC 119 (e). All of these provisional applications are incorporated herein by reference for all purposes.
The present invention relates generally to medical systems, and more particularly to a reduced pressure wound treatment system.
Physicians perform millions of surgical procedures worldwide every year. Many procedures are performed as open surgery, but the number of procedures performed using minimally invasive surgery such as endoscopic surgery, arthroscopic surgery, and laparoscopic surgery is increasing. As an example, the American College of Cosmetic Surgery reports that over 450,000 liposuction operations were performed in the United States in 2007.
Surgical procedures involve acute wounds, such as incisions, in the skin and related tissues. In many cases, the incision is closed at the end of the surgery using a mechanical instrument such as a staple or suture, or is closed using an adhesive. Thereafter, the wound is usually simply covered with a dry, sterile bandage. Of course, more tears usually occur than in the epidermis.
For many surgical procedures, especially those performed with minimally invasive techniques, much of the tear or damage is at the lower or subcutaneous level of the epidermis. Again, as an example, in one type of liposuction surgery, after introducing an expansive fluid (saline, mild analgesic, and epinephrine), the surgeon will use the trocar and cannula to remove and remove the fat area. Let's go. At this time, it is not uncommon for a subcutaneous void or other tissue defect to occur at the tissue site away from the incision where the cannula was placed and the other incision where the instrument was placed. This excavated tissue required time and care to heal and was at risk for many complications and edema, seroma, hematoma, further wounds, and ecchymosis.
According to one exemplary embodiment, a system for applying a force to a desired treatment area of a person's curved body portion includes a medical article assembly for placement in the person's desired treatment area. The medical assembly has a longitudinal portion having a first end and a second end. The medical assembly further includes an inner surface member having a first surface and a second inward surface, and a medical cushion having a first surface and a second inward surface. The second inward surface of the medical cushion is disposed to face the first surface of the inner surface member. The system further includes a releasable circumferential member coupled to a first end and a second end of the medical assembly, a sealing subsystem for providing a fluid seal on the medical assembly, and the medical assembly Including a vacuum subsystem for providing vacuum to the
According to one exemplary embodiment, a system for applying a force to a desired treatment area of a person's curved body portion includes a medical article assembly for placement in the person's desired treatment area. The medical assembly has a longitudinal portion having a first end and a second end. The medical assembly includes a first material having a first surface and a second inward surface, and a second material having a first surface and a second inward surface. The second inward surface of the first material is disposed to face the first surface of the second material. The system further includes a releasable circumferential member coupled to a first end and a second end of the medical assembly, a sealing subsystem for providing a fluid seal on the medical assembly, and the medical assembly Including a vacuum subsystem for providing vacuum to the
According to an exemplary embodiment, a medical assembly shaped and configured to be placed on at least a portion of a human torso, a system for applying a compressive force to a desired treatment area of the human torso; A releasable circumferential connector for holding the medical assembly relative to the torso. The circumferential connector and the medical assembly include a circumferential member. The system further compresses against at least a portion of the torso as soon as the system provides a decompression to the medical assembly and a sealing subsystem for providing a fluid seal on the human skin. And a vacuum subsystem for being operable to generate a force.
According to one exemplary embodiment, a system for applying a compressive force to a desired treatment area of a human torso includes a medical article assembly for placement in the desired treatment area of the person. The medical assembly includes a longitudinal portion having a first end and a second end, and a medical cushion having a first surface and a second inward surface. The second inward surface of the medical cushion is disposed to face the first surface of the inner surface member. The medical assembly further includes a skin member surrounding the medical cushion. The outer skin member includes an inner surface member having a first surface and a second inward surface, and an outer surface member having a first surface and a second inward surface. A second inward surface of the outer surface member is disposed adjacent to the first surface of the medical cushion. The medical cushion is formed of a cushion material having a density of 25 kg / m 3 or more. The system further includes a releasable circumferential member coupled to the first and second ends of the medical assembly, and a sealing subsystem for providing a fluid seal on the medical assembly and the patient's epidermis Including. The sealing subsystem includes an overdrape that extends over the outer member, and a human skin and a seal for providing a fluid seal over the overdrape.
According to an exemplary embodiment, a method of manufacturing a system for applying a compressive force to a desired treatment area of a curved body part of a person is shaped and configured for placement in the desired treatment area of the person. Forming a medical assembly. The method further includes providing a releasable circumferential connector for holding the medical assembly relative to the desired treatment area, and providing a fluid seal on the medical assembly and the human epidermis. Providing a sealing subsystem.
According to an exemplary embodiment, a method of applying a force to at least a portion of a person's curved body portion includes placing a medical assembly on the curved body portion. The medical assembly is an inner surface member for placement on the desired treatment area, the inner surface member having a first surface and a second inward surface, and a first surface and a second inward surface. And a medical cushion having a surface. A second inward surface of the medical cushion is disposed opposite the first surface of the inner surface member, thereby sealing the medical assembly to the curved body part. The method further includes providing a reduced pressure to the medical assembly. The medical cushion has a first volume (V 1 ) under atmospheric pressure and a second volume (V 2 ) where V 1 > V 2 under reduced pressure.
According to one exemplary embodiment, a method for applying a force to a curved body part includes positioning a medical assembly relative to a desired region. The medical assembly has a longitudinal portion having a first end and a second end. The method further includes releasably connecting a first end to the second end to hold a longitudinal portion of the medical assembly relative to a person at the desired treatment area; and a vacuum source to the medical assembly. Coupling the fluid flowable and activating a reduced pressure source to provide reduced pressure to the medical assembly. The medical assembly is placed under reduced pressure and contracts to produce a directional force.
A more complete understanding of the present invention may be obtained by reference to the following detailed description when taken in conjunction with the accompanying drawings.
FIG. 1 is a schematic perspective view of a portion of an exemplary embodiment of a reduced pressure system shown on a patient's torso. FIG. 2 is a schematic perspective view with a portion of a cross section of an exemplary embodiment of a reduced pressure system shown on an incision and perforated subcutaneous tissue. FIG. 3 is a cross-sectional view of a portion of an exemplary embodiment of a reduced pressure system shown on intact skin and a region of perforated subcutaneous tissue. FIG. 4 is a schematic cross-sectional view of a portion of an exemplary embodiment of a decompression system that is shown applied to a patient's torso. FIG. 5 is a schematic cross-sectional view of a portion of an exemplary embodiment of a decompression system shown applied to a patient's torso. FIG. 6 is a schematic perspective view of a portion of an exemplary embodiment of a reduced pressure system shown on a patient's torso. FIG. 7 is a rear schematic perspective view of a portion of the exemplary system shown in FIG. FIG. 8 is a schematic cross-sectional view of a portion of an exemplary embodiment of a reduced pressure and compression system shown on a patient's torso. FIG. 9 is a schematic perspective view showing a cushion material. FIG. 10 is a front schematic perspective view of an exemplary embodiment of a brassiere for providing support to breast tissue. 11 is a cross-sectional view of the brassiere of FIG. 10 taken from one side. 12 is a front schematic perspective view of the brassiere of FIGS. 10-11 with a portion of the released brassiere. FIG. 13 is a schematic cross-sectional view of a portion of the brassiere of FIGS. 14 is a schematic cross-sectional view of a portion of the brassiere of FIGS. 10-12 illustrating an exemplary alternative embodiment.
In the following detailed description of the exemplary embodiments, reference is made to the accompanying drawings that form a part hereof, and in which is shown by way of illustration specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention, other embodiments may be used, and logical structures, machines may be used without departing from the spirit and scope of the invention. It should be understood that mechanical, electrical and chemical changes are possible. In order to avoid details not necessary to enable one skilled in the art to practice the invention, certain information known to those skilled in the art may be omitted from the description. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is defined only by the appended claims.
Referring to FIG. 1, a system 2 for applying force to a desired treatment area 3 of a patient's torso 4 is shown. This system 2 may be applied in any situation where support is desired for a predetermined part of the patient's body, such as the patient's torso, arms, legs or other curved body parts, This will be explained in the related section. The system 2 is for therapeutic reasons such as applying a compressive or inward force (tangential component force) and a lifting or upward force to the desired treatment area while optionally removing fluid such as exudate. Can be applied when power is desired. System 2 can be applied to treat subcutaneous tissue, superficial tissue, or provide support. As used herein, subcutaneous means tissue at least as deep as subcutaneous tissue, but may further include deep tissue including organs. Unless otherwise stated, as used herein, “or” does not require mutual exclusivity. The system 2 can be applied when support is simply desired for cosmetic reasons or for any reason.
System 2 makes it relatively easy to provide support to a part of a patient's body and accepts various sized body parts by a single system or device, thereby requiring a large amount of inventory. Can be reduced. When used on a wound, the system 2 keeps the wound dry, reduces dead space formation, improves perfusion, reduces seroma and hematoma formation, purpura associated with certain surgical procedures and Will reduce edema. System 2 further provides relative comfort to the patient or person using system 2. The force generated by the system 2 can be varied by changing the reduced pressure transmitted to the system 2, allowing for automatic adjustment of the reduced pressure using a feedback loop, which can be desired at the treatment site even when swelling increases or decreases The compression force can be maintained.
Referring now to FIG. 2, an exemplary system 10 for treating perforated subcutaneous tissue in a peri-incision region according to an exemplary embodiment is shown. The system 10 is shown in the peri-incision area around the incision 12, which passes through the epidermis 14 or skin and the dermis 16 to the inferior skin or subcutaneous tissue 18. Subcutaneous tissue 18 includes a number of tissue types such as adipose tissue or muscle. The drilled subcutaneous tissue site 20 is shown extending from the incision 12 and in this example includes a subcutaneous defect or void 22. The drilled subcutaneous tissue 20 is often caused by surgical procedures such as liposuction. The perforated subcutaneous tissue 20 will contain voids, such as voids 22, spaces, and various defects that can be troublesome for many reasons. For example, the void 22 may increase fluid and cause edema. The term “fluid” as used herein generally refers to a gas or liquid, but further includes other flowable materials including, but not limited to, gels, colloids, and foam-like substances.
The incision 12 can be closed using any closure device, such as staples, sutures or adhesives, but in this exemplary embodiment, the suture 13 is shown. The system 10 is typically for treating an area, and in particular, typically for treating the subcutaneous tissue site 20 and the tissue surrounding the subcutaneous tissue 20, although the system 10 further includes an incision. It may be used to treat 12 more limited areas.
The system 10 includes a medical assembly 30 that includes a molded medical cushion 32 (or medical cushion), a sealing subsystem 60 and a vacuum subsystem 80. System 10 produces a net compressive force represented by reference numeral 24, which is realized in subcutaneous tissue 20. As described further below, the shaped medical cushion 32 may be shaped and configured to allow the compressive force 24 to be distributed almost evenly above and below the patient's epidermis 14. Otherwise, dermatitis will occur if there are areas where the force is substantially increased compared to other areas. The system 10 may further operate to generate an inward force (or closure force), ie, a force toward the interior of the medical assembly 30. The inward force is represented by 26. The inward force 26 may remain substantially in the plane of the skin 14. In other words, the inward force 26 acts mainly within the epidermis 14. The system 10 is also operable to transmit a reduced pressure to the incision 12. Depressurization can be achieved at the level of the subcutaneous void 22 to aid in the approach (integration) of tissue in that area, as well as assisting in the removal of any air or any other fluid, such as exudate.
The medical assembly 30 includes a molded medical cushion 32 having a first surface 34 and a second inward (tissue facing) surface 36. The shaped medical cushion 32 can be sized and shaped to substantially match the estimated area of the drilled subcutaneous tissue 20 even if larger or smaller sizes are used. The molded medical cushion 32 has a peripheral edge 38. The molded medical cushion 32 can be made of a number of different cushion materials. In an exemplary embodiment, the molded medical cushion 32 is formed from a porous and permeable foam material, and more particularly a mesh-like that allows for good permeability of wound fluid even under reduced pressure. Formed by open cell polyurethane or polyether foam. One such foam material that has been used is Kinetic Concepts, Inc. of San Antonio, Texas. VAC® Granfoam® material available from (KCI). Any material or combination of materials can be used for the cushion material to distribute the reduced pressure and to operate the cushion material to provide the desired force.
The shaped medical cushion 32 may be sized and shaped to distribute force evenly and dispense reduced pressure. The term “manifold” as used herein generally refers to a substance or structure provided to apply reduced pressure to a tissue site, to deliver fluid to the tissue site, or to assist in removing fluid from the tissue site. Say. The manifold typically includes a plurality of channels or pathways interconnected to improve the distribution of fluid provided to and removed from the surrounding tissue. The manifold may be a biocompatible material that can be placed in contact with the tissue site and that can distribute the reduced pressure to the tissue site. Examples of manifolds include, but are not limited to, a flow such as a porous foam, an open cell foam, a porous tissue collection, a liquid, a gel and a foam containing or holding a flow path. A device having structural elements arranged to form a path may be included. The manifold may be porous and may be made from a foam, gauze, felted mat or any other material suitable for a particular biological application. Other embodiments would include “closed bubbles”. In some situations, the manifold may further be used to distribute fluids such as drugs, antimicrobials, growth factors and various solutions to the tissue site. Other layers such as absorbent materials, wicking materials, hydrophobic materials and hydrophilic materials may be included in or on the manifold.
Granfoam® material reticulated pores range from about 400 microns to 600 microns and are useful for achieving the manifold function, although other materials may be used. The density of medical cushion materials, such as Granfoam® material, is typically about 1.3 lb / ft 3 -1.6 lb / ft 3 (20.8 kg / m 3 -25.6 kg / m 3 ). In some situations, a material having a higher density (smaller pore size) than Granfoam® material may be desirable. For example, Granfoam® material or a similar material having a density greater than 1.6 lb / ft 3 (25.6 kg / m 3 ) can be used. As another example, 2.0lb / ft 3 (32kg / m 3) or 5.0lb / ft 3 Granufoam having a density or more density greater than (80.1kg / m 3) (R) material or Similar materials can be used. The higher the density of the material, the higher the compression force generated for a given vacuum. When a foam having a smaller density than the tissue at the tissue site is used as a medical cushion material, lifting force may be generated. In an exemplary embodiment, one portion of the medical assembly, eg, the edge, may provide a compressive force while another portion, eg, the central portion, provides the lifting force.
The cushion material may be a reticulated foam that is later felted to a thickness of about one third (1/3) of the original thickness. Among many possible cushioning materials, Granfoam® 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 the process of microbonding, or to add other substances to the cushion material, such as antimicrobial substances. The cushion material may be isotropic or anisotropic depending on the exact direction of compression force 24 desired during application of reduced pressure. The cushion material may further be a bioabsorbable material.
The sealing subsystem 60 includes an overdrape 62 (drape) or a sealing member. Overdrape 62 may be an elastomeric material or any material that provides a fluid seal. By “fluid seal” or “seal” is meant the seal necessary to maintain the vacuum at the desired site to which the particular vacuum subsystem associated is provided. “Elastomer” means having an elastomeric property and generally refers to a polymer material having rubber-like properties. More specifically, most elastomers have an elongation of 100% or more and very high elasticity. The elasticity of a material refers to the performance of the material that recovers 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, Includes EVA film, copolyester and silicone. By way of non-limiting example, the overdrape 62 can be formed from a material including silicone, 3M's Tegaderm® drape material, acrylic drape material available from Avery, or incise drape material.
An overdrape 62 can be coupled to the cushion 32. This coupling can be done in various ways. The overdrape 62 and the cushion 32 may be bonded using an adhesive such as an acrylic adhesive, a silicone adhesive, a hydrogel, or a hydrocolloid. The overdrape 62 and the cushion 32 may be coupled by thermal bonding, ultrasonic bonding, radio frequency bonding, or the like. This combination can be done in a discrete pattern or more completely. Structural members may be added to this bond in order to cause the overdrape 62 to act anisotropically in the desired direction, i.e. to create an anisotropic drape member. The anisotropic drape member helps the medical assembly 30 initially move only in a predetermined direction, i.e. around a particular axis or axes.
In the exemplary embodiment of FIG. 2, the overdrape 62 is sized to extend beyond the peripheral edge 38 of the end 33 of the molded medical cushion 32 to form a drape extension 64. The drape extension 64 has a first surface 66 and a second inward surface 68. The overdrape 62 can be sealed against the patient's epidermis 14 using a seal or device 69 to provide a seal. Overdrape 62 and seal 69 allow the reduced pressure subsystem 80 to maintain reduced pressure at the tissue site. Seal 69 may take various forms such as adhesive 70, sealing tape or drape tape or strip, double-sided drape tape, glue, hydrocolloid, hydrogel, or other sealing means. When using a tape, it may be formed of the same material as that of the overdrape 62, and a pressure sensitive adhesive may be applied in advance. The pressure sensitive adhesive 70 can be applied on the second surface 68 of the drape extension 64. The pressure sensitive adhesive 70 provides a substantial fluid seal between the overdrape 62 and the patient's epidermis 14. The pressure sensitive adhesive 70 may have a removable strip that covers the adhesive 70 that is removed before the drape extension 64 is applied to the patient's epidermis 14.
The decompression subsystem 80 includes a decompression source 82, which can take a variety of forms. A reduced pressure source 82 provides a reduced pressure as part of the system 10. The reduced pressure source 82 can be any device for supplying reduced pressure, such as a vacuum pump, wall suction, or other source. The amount and nature of the vacuum applied to the tissue site and the molded medical cushion 32 will generally vary depending on the application, but the vacuum is typically between -5 mmHg and -500 mmHg, more typically between -100 mmHg and -300 mmHg. Will be between.
As used herein, “reduced pressure” generally refers to a pressure below the ambient pressure of the tissue site being treated. In many cases, this reduced pressure will be below the atmospheric pressure where the patient is. Alternatively, the reduced pressure may be less than the hydrostatic pressure at the tissue site. Unless otherwise stated, the pressure values mentioned in this document are gauge pressures. The reduced pressure transmitted may be constant or change (patterned or random), and may be transmitted continuously or intermittently. The terms “vacuum” and “negative pressure” may be used to describe the pressure applied to the tissue site, but the actual pressure applied to the tissue site is usually above that associated with a full vacuum. Good. Consistent with the use herein, reduced pressure or increased vacuum typically refers to the relative decrease in absolute pressure.
In order to maximize patient mobility and comfort, the vacuum source 82 may be a battery-powered disposable vacuum generator. This reduced pressure source 82 facilitates use in the operating room and provides ease of movement and convenience to the patient during the rehabilitation phase. The reduced pressure source 82 has a battery compartment 84 and a canister region 86 that has a window 88 that provides a visual indication of the level of fluid within the canister 86. An insertion membrane filter, such as a hydrophobic or oil repellent filter, may be inserted between the vacuum conduit or tube 90 and the vacuum source 82.
For many treatments, the patient may be instructed to wear the system 10 for 3 to 5 days, or may be instructed to wear the system 10 for more than 15 days. Nevertheless, treatment time is a welcome period as opposed to treatment with conventional compression garments, which is worn today for up to 6 weeks after many treatments. Thus, battery life and / or power supply should provide up to 15 days of operation. V. available from KCI, San Antonio, Texas. A. C. Other decompression sources such as a (registered trademark) treatment unit or a wall suction unit may be used. The reduced pressure source 82 can also be supplied by a portable mechanical device, such as a piston in the tube, depending on how much leakage occurs in the fluid seal between the molded medical cushion 32 and the skin 14.
The reduced pressure generated by the reduced pressure source 82 is transmitted to the reduced pressure interface 92 which is the L-type terminal 94 through the reduced pressure conducting tube 90. In one exemplary embodiment, terminal 94 is a TRAC® technology terminal available from KCI, San Antonio, Texas. The decompression interface 92 allows decompression to be communicated to the ceiling subsystem 60 and realized within the ceiling subsystem 60. In the exemplary embodiment, terminal 94 extends through overdrape 62 and into molded medical cushion 32.
In operation, system 10 is utilized in the operating room after a surgical procedure on a patient or at another time. The second surface 36 of the molded medical cushion 32 is positioned opposite the patient's epidermis 14, above the subcutaneous tissue site 20 where the molded medical cushion 32 has been drilled, and partly above the incision 12. . The medical assembly 30 can be sized for standard applications associated with surgery performed by a medical service provider. The medical assembly 30 can be sized, shaped and configured to work with a variety of anatomical applications such as the abdomen, chest, thighs, arms.
If the overdrape 62 is not yet coupled to the molded medical cushion 32 (see other exemplary embodiments below), the overdrape 62 is disposed on the first surface 34 of the molded medical cushion 32 and the additional portion Extends beyond the peripheral edge 38 to form a drape extension 64. Thereafter, the drape extension 64 can be taped to the skin 14 (see reference numeral 172 in FIG. 2), or an adhesive 70 (FIG. 1) can be used, the overdrape 62 and the patient's skin 14 A fluid seal is formed between the two. The fluid seal need only be sufficient so that the system 10 can maintain a reduced pressure on the treatment site. The decompression interface 92 and the decompression source 82 are connected by a decompression conduction tube 90 so that fluid can flow. The reduced pressure source 82 is then activated and the reduced pressure is transmitted to the molded medical cushion 32.
As pressure is reduced at the molded medical cushion 32, the molded medical cushion 32 contracts and contracts laterally, forming a semi-rigid substrate, resulting in many beneficial forces and movements. The reduced pressure is further transmitted as it is through the molded medical cushion 32, and as a result, the reduced pressure is applied to the patient's epidermis 14 at the incision 12. At least in the early stages of the healing process, reduced pressure is achieved in the subcutaneous tissue 20 through the incision 12, and the reduced pressure helps close the defect, such as the subcutaneous void 22, and generally provides stability to this region. The reduced pressure transmitted to the molded medical cushion 32 further generates a compressive force 24, which can again provide stability and treatment. The compressive force 24 is just over the point of the epidermis 14. The compressive force 24 extends deeper and downward and is received at the level of the subcutaneous tissue 20.
When the overdrape 62 and the molded medical cushion 32 contract laterally under the influence of reduced pressure and a downward force acts on the epidermis 14 via the Poisson's ratio, an inward force 26 is generated and closed at the incision 12 Helps to retain force and generally provides additional stability to the incision 12 or treatment site. The inward force 26 transmits force to the skin 14 depending in part on the friction between the molded medical cushion 32 and the skin 14, either by the adhesive 70 or using tape (reference numeral 172 in FIG. 2). In some cases, force can be transmitted from the drape extension 64 to the skin 14 via friction. At the same time, the reduced pressure transmitted to the molded medical cushion 32 and the reduced pressure through the molded medical cushion 32 help remove any exudate or other fluid from the cut 12. The system 10 can also flatten the epidermis with an even application of force, which contours and smooths the epidermis 14. All of these actions can improve the recovery of the incision 12 and the drilled subcutaneous tissue 20.
One operational concern is to avoid dermatitis when the system 10 is deployed and used. For this reason, care is taken to avoid dermatitis such as blistering of the patient's epidermis 14 due to secondary shear forces, secondary distortions or other effects. For this reason, the end 33 of the molded medical cushion 32 can be molded to provide an even distribution of compressive force. The end 33 is the molded portion outside the cushion 32 and the peripheral edge is generally the outermost portion of the molded medical cushion 32 or the outermost portion that interacts with the patient's epidermis. The end 33 may be a chamfered surface, but other shapes may be used, for example, an arch shape for the system 110 (FIG. 2). A shape that distributes the force evenly is desirable. Incidentally, if a medical cushion with square edges is used, a “tent area” may form when overdrape is applied over the medical cushion and on the patient's epidermis. The “tent area” is thought to contribute to problems related to dermatitis. The “tent area” can also be avoided by molding the molded cushion 32 or by attaching an overdrape to the side area of the medical cushion.
The molded edge or end of the molded medical cushion 32 generates a compressive force 24 without a large “edge effect”, ie, without causing shear or stress to a level that causes dermatitis such as erythema or blisters. Enable. The molded part gradually distributes the force and avoids inflammation. This method of carefully applying pressure to the epidermis 14 to avoid inflammation is commonly referred to as “equally distributing” the compressive force 24, but is not strictly used in the literal sense. There may be some variation, but it is not enough to cause inflammation of the epidermis 14. As another precaution against dermatitis, an inner layer is added between the molded medical cushion 32 and the patient's epidermis 14 (see reference numeral 857 in FIG. 11), or other exemplary embodiments described below. It may be arranged at other positions described in relation to them.
It is desirable to apply the system 10 in the operating room and allow the patient to leave the system 10 until sufficient healing has occurred. In this regard, overdrape 62, molding, to allow the medical service provider to obtain visual clues about the healing of the incision 12 and the drilled subcutaneous tissue 20 without having to remove the medical assembly 30. It may be desirable to form the medical cushion 32 and other layers from a transparent material.
Referring now to FIG. 3, another exemplary embodiment of a system 110 for treating a patient's perforated subcutaneous tissue is shown. Since this system 110 is similar in most respects to the system 10 of FIG. 2, in this embodiment, 100 is added to the reference and similar parts are generally indicated. In this particular exemplary embodiment, system 110 is placed on an intact skin 115 (ie, there is no incision or other linear wound in this case). However, there is a perforated subcutaneous tissue 120 that includes a subcutaneous void 122. The system 110 helps treat the drilled subcutaneous tissue 120 with or without an incision.
System 110 includes a medical assembly 130 having a molded medical cushion 132. The molded medical cushion 132 has a first surface 134 and a second inwardly facing surface 136. While the molded medical cushion 32 of FIG. 2 is shown with a trapezoidal cross section, the molded medical cushion 132 of FIG. 3 is formed in an elliptical shape having an end 133 with a rounded or arcuate edge. It has a cross section. The molded medical cushion 132 can be formed with a double chamfered cross section or other shape. As described above, the shape of the molded medical cushion 132 facilitates the even distribution of compressive force to the extent that dermatitis is avoided during decompression. In the exemplary embodiment of FIG. 3, a seal 169 provides a fluid seal between the overdrape 162 and the patient's epidermis 114. In this embodiment, the seal 169 is a sealing tape 172.
System 110 includes a sealing subsystem 160 for providing a fluid seal on molded medical cushion 132. The reduced pressure conducting tube 190 transmits the reduced pressure to a reduced pressure interface 192, for example, a terminal 194, and this connection is capable of fluid communication with the interior of the sealing subsystem 160.
In this exemplary embodiment, atmospheric pressure provides a force 131 on the first surface 161 of the overdrape 162 and the contraction of the molded medical cushion 132 generates a compressive force 124 to provide a net force, which is It will be brought into the lower skin to reach the dermis 116 and the other subcutaneous level 118. At the same time, an in-plane force directed substantially inward is generated. Inward forces can be generated through two different actions. First, the inward force 127 is an inward contraction force caused by compression of the molded medical cushion 132. As the molded medical cushion 132 is compressed, the molded medical cushion 132 is pulled inward. . At the same time, when depressurization is applied, overdrape 162 is drawn into the region adjacent end 133 as indicated by arrow 128. Since the drape extension 164 is fixed to the skin 114, the horizontal component of the resultant force 128 pulls the skin 114 inward as indicated by the inward force 129.
Referring now to FIG. 4, a system 210 for treating a tissue site 220, eg, a drilled subcutaneous tissue site, is shown on a curved body part 200, such as a patient's torso.
The system 210 includes a medical assembly 230 and a sealing subsystem 260. The medical assembly 230 includes a molded medical cushion 232. Sealing subsystem 260 includes an overdrape 262 having an extension 264. The extension 264 can be secured to the patient's epidermis 214 with a seal such as an adhesive 270. A reduced pressure source (not shown) provides reduced pressure to the reduced pressure conduit 290, which is communicated to the reduced pressure interface 292.
The reduced pressure interface 292 transmits the reduced pressure to the molded medical cushion 232. As the shaped medical cushion 232 is compressed under the influence of reduced pressure, a net compressive force 224 is generated and transmitted to the tissue site 220. In this embodiment, the end 233 of the molded medical cushion 232 is formed at a right end. Overdrape 262 forms a “tent” region 229 around void 235. Under reduced pressure, the overdrape 262 is drawn into the gap 235, thereby applying a force that generates an inward contraction force 226.
In the system 210, the curvature of the molded medical cushion 232 helps generate a compressive force. The first surface 234 of the molded medical cushion 232 has a surface area greater than the surface area of the second inward surface 236 of the molded medical cushion 232. For this reason, under reduced pressure, this difference in surface area further promotes the generation of a net compressive force 224.
Referring now to FIG. 5, an exemplary system 310 for treating a tissue site 320, eg, a drilled subcutaneous tissue site, is shown. Since this system 310 is similar in most respects to the system 210 of FIG. 4, in this embodiment generally 100 is added to the reference number of FIG. 4 to indicate similar portions. The system 310 is applied to a curved body part 300, such as a patient's torso. System 310 presents a circumferential medical assembly 330 disposed adjacent to epidermis 314.
The medical cushion 332 is disposed opposite the epidermis 314 and the drape or overdrape 362 and is used to form a sealed area that houses the medical cushion 332. The reduced pressure is communicated to the reduced pressure interface 392 through the reduced pressure conduit 390. The reduced pressure interface 392 transmits reduced pressure to the medical cushion 332. The circumferential forces that occur during the application of vacuum combine in system 310 to produce an inward compression force 324. This compressive force can be higher than flat or partial torso applications because there is no drape and release of force on the skin.
With reference now to FIGS. 6-8, a system 410 for treating a treatment area 412 of a patient is shown. The treatment provided in this example is a force on the treatment area 412 on the patient's torso 404. The procedure may further include removal of one or more incision fluids. For this exemplary embodiment, the desired treatment area 412 is shown as the patient's abdomen. If the patient is, for example, swollen liposuction, apply a compressive force realized in one or more incisions to obtain a compressive force realized in the dermis 416 and the drilled subcutaneous tissue 420. It may be desirable to use the system 410 to apply, provide tissue stabilization to the subcutaneous tissue 418 and tissue stabilization against shear stress, and remove any expelling fluid, such as swelling fluid or exudate. System 410 includes a medical assembly 430 that extends at least partially circumferentially around a patient's torso 404. The medical assembly 430 includes a medical cushion 432 having a first peripheral edge 439.
As clearly shown in FIG. 8, the medical cushion 432 has a first surface 434 and a second inwardly facing (or tissue facing) surface 436. The medical cushion 432 distributes the reduced pressure to provide a force, which may be a compression force or a lifting force, to a desired treatment area, eg, the treatment area 412. The inner member 440 has a first surface 442 and a second inward surface 444 and can be disposed between the patient's epidermis 414 and the medical cushion 432. The second surface 436 of the medical cushion 432 may be coupled, eg, joined or incorporated, to the first surface 442 of the inner surface member 440. The inner member 440 can be independent of the medical cushion 432. The inner member 440 can be fluid permeable or impermeable and can provide a barrier between the medical cushion 432 and the patient's epidermis. In one exemplary embodiment, the inner surface member 440 avoids dermatitis that may be caused by the medical cushion 432 interacting with the patient's skin and uses vacuum to facilitate the removal of sweat and other fluids on that surface. To do.
The medical cushion 432 can be made from any cushion material described elsewhere in this application. As in the breast of the bra embodiment shown below, in some parts, the user desires a harder (not giving too much lift) medical cushion 432, and in some parts, a softer, medical that produces maximum lift. Because the user desires the cushion 432, the medical cushion 432 can include a cushion material that is not completely uniform. The cushion material can be hardened to some extent by using a cushioning material that has changing properties, or by using two or more different materials combined to form the cushioning material. In some applications, Supreme Systems, Inc. of Sunnyvale, California. It would be desirable to form the cushioning material from a honeycomb material, such as the Supracor® melt bonded honeycomb material.
The medical assembly 430 can further include an outer member 446 or an outer member having a first surface 448 and a second surface 450. The inner member 440 or inner member, and outer member 446 may be formed of a pre-tensioned elastic material, such as a spandex material, for example, a Lycra® brand material can be used. The inner member 440 has a high shrinkage performance to avoid wrinkles that can result in contact loads on the skin. Further, the low friction of the material used for the inner member 440 helps reduce the likelihood of shear damage to the skin. The permeability of the inner member 440 or layer also provides reduced pressure transmission to the tissue site and provides a path for exudate removal. The inner surface member 440 or inner member and the outer surface member 446 may be combined to form an outer skin surrounding the medical cushion 432.
The second surface 450 of the outer surface member 446 may be coupled to the first surface 434 of the medical cushion 432. The various members (eg, surfaces 436 and 442 and surfaces 450 and 434) can be combined in various ways, many examples are described below. That is, an adhesive such as an acrylic adhesive, a silicone adhesive, a hydrogel, or a hydrocolloid can be used, or a bonding such as a thermal bonding, an ultrasonic bonding, or a radio frequency bonding can be used. The combination may be performed in a pattern or may cover the whole. A structural member may be added to this bond to cause the member to act anisotropically in the desired direction. In addition, struts or other mechanical elements can be provided within the cushion to alter the compression force and characteristics of the medical cushion 432.
The medical assembly 430 is shown in a substantially rectangular cross-section in FIGS. 6-8, but other shapes are utilized to provide more vertical lifting force (perpendicular to the directions shown in FIGS. 6 and 7). Can be provided. Although the medical cushion 432 is shown as an integral member, the medical cushion 432 can be provided with various sections of cushioning material, each having a different supply of reduced pressure, and can also be provided with sections having positive pressure. . With respect to the latter, one or more sealed chambers can be added to provide positive pressure to help redistribute the load or to add structural elements.
The medical cushion 432 and any additional layers such as the inner surface member 440 and the outer surface member 446 may be covered with an overdrape 462 that is part of the sealing subsystem 460. Overdrape 462 can extend beyond peripheral edges 438 and 439 to form a drape extension 464 having a first surface 466 and a second surface 468. The fluid seal may be a drape extension 464 by using a seal 469 such as a sealing tape or drape tape 471, an adhesive (see adhesive 5 in FIG. 1), glue, hydrocolloid, hydrogel or other sealing means. And the patient's epidermis 414. The drape tape 471 includes an adhesive 473. In some applications, gasket material may be added between the skin 414 and the medical cushion 432 or overdrape 462. In another embodiment, the overdrape 462 is applied only on the first surface of the medical cushion 432, and then a wide drape tape is used to attach the edge or periphery of the medical cushion 432 with or without the extension 464. It may be sealed.
Sealing subsystem 460 provides a fluid seal or allows system 410 to maintain a reduced pressure at the desired treatment site 412. The sealing subsystem 460 preferably includes an overdrape 462 and a seal 469. Although described as forming a fluid seal, in practice there may be some leakage, and a slight air leak provides a low velocity airflow throughout the medical assembly 430 that is distributed to remove moisture. Help to remove. In an alternative embodiment, instead of using an overdrape 462, the outer member 446 may be made to have an airtight outer portion and the drape tape to cover the edges of the cushion material as well as other portions that are not sealed. Can be assigned.
Although the decompression subsystem 480 is shown in part, it is similar to the decompression subsystem of the previously described embodiment, eg, 80 of FIG. The decompression subsystem 480 includes a decompression interface 492, such as an L-shaped terminal 494, which allows a decompression source to carry decompression into the medical assembly 430 via the decompression conduit 479, particularly into the medical cushion 432. . The decompression subsystem 480 can be controlled to vary the pressure to provide a constant level of compressive force as the patient's dimensions change due to reduced edema. The reduced pressure source can provide a constant reduced pressure or a variable reduced pressure. As with the other embodiments described above, the reduced pressure source can take many different forms, including those mentioned elsewhere in this document.
As clearly shown in FIG. 7, the medical assembly 430 may include a transition region 452 on a portion of the medical cushion 432. The transition region 452 may be tapered or formed to reduce thickness to increase flexibility and maximize shear compliance at the edges. This is due to any concentrated shear loading, patient mobility, as caused by contraction of the medical assembly 430, and stiffness discontinuities between the dressed / splinted area and the unsupported dermis. Can help distribute the concentration of load caused. Transition region 452 can transition to one or more coupling pieces 454 or coupling elements 454.
A portion of the coupling element 454 may include a fastener 456, which may be a hook-and-loop fastener, a fastener, or other means of coupling the two portions of the coupling element 454. Coupling element 454 and fastener 456 form a circumferential connector and medical assembly 430 completes a path around a curved body part or forms a completed releasable circumferential member 458. Thus, the releasable circumferential member 458 extends around the patient's torso 404 to allow the releasable circumferential member 458 to be retained against the torso 404, and in particular by the decompression subsystem 480. Even before the reduced pressure is transmitted, the cushion 432 is held against the desired treatment area 412. Additional drape tape may be used to provide a fluid seal on coupling element 454 and fastener 456.
The transition region 452 can include a first end 453 and a second end 455 of the medical assembly 430, particularly the end of the longitudinal portion 457 shown around the patient's torso 404. A releasable circumferential member 458 that includes a coupling element 454 and a fastener 456 joins and holds the two ends releasably.
The difference in surface area between the first surface 434 and the second surface 436 of the medical cushion 432 contributes to the generation of a net compression (inward) force. The net compression force increases linearly as the ratio of the outer periphery of the first surface 434 of the medical cushion 432 to the second surface 436 of the medical cushion 432 increases. For this reason, in order to generate a larger compressive force, the medical cushion 432 can be formed thick in order to increase the ratio. The bending stiffness of the medical cushion 432 may also affect the transmission of the generated compression force. If the bending stiffness of the dressing 430 is low, the net compressive force is distributed very evenly. Referring to FIG. 9, the low elastic stiffness along the second axis parallel to 542 and the first axis parallel to 540 contributes to a reduction in the bending stiffness of the medical cushion 532.
6-8, in operation, the medical assembly 430 is placed around the patient's curved body part, eg, the torso 404, with the medical cushion 432 facing the desired treatment region 412. The A releasable circumferential connector 458 is utilized (ie, coupling element 454 and fastener 456 are actuated) to form a finished releasable circumferential member. The decompression subsystem 480 is activated, which causes the decompression subsystem 480 to transmit the reduced pressure to the sealing subsystem 460 and the reduced pressure to the medical cushion 432. The medical cushion 432 can then contract and collapse under reduced pressure to transmit support force to the desired treatment area 412. The support force can include a compressive force that acts within the patient's torso and reaches into the lower epidermis 14, dermis 416, and reaches the subcutaneous level 418 of the drilled subcutaneous tissue 420. The net compressive force for one segment is indicated at 424 in FIG. A lateral force 426 can also be generated, ie, a force toward the peripheral edge 439, or a lifting force or an upward force 426.
Referring now to FIG. 9, a portion of a medical cushion 532 made from an anisotropic material is shown. One anisotropic material that can be used is AirX compression material, or fabric, available from Tytex Group (www.tytex.com). The medical cushion 532 has a first surface 534 and a second surface 536. It further has a top 537 that is closest to the person's head for the embodiment shown in FIGS. 6 and 7 and a bottom 539 that is closest to the person's foot for the embodiment shown in FIGS. For illustrative purposes, the medical cushion 532 has three axes that are parallel to the reference lines 540, 542, and 544, respectively. The material of the medical cushion 532 is potentially anisotropic, meaning that it has different mechanical properties along different axes. For example, the compression ratio may be different between at least two of the first, second, and third axes. In one exemplary embodiment, if it is desired to apply a strong force, the anisotropic material can be selected and oriented to preferentially stretch or shrink along one or more axes. This may be particularly desirable when applying a similar system to breast tissue, as discussed herein.
With reference to FIGS. 10-14, a system 610 for providing support to breast tissue is shown. The system 610 includes a therapeutic bra 612 for supporting breast tissue 614 in the upper chest region 616 of the patient's torso 604. Support may be provided in a defined support area 618 near or above breast tissue 614 that may be the subject of a surgical procedure such as excision or breast augmentation of a portion or the entire mammary gland. In the case of a mastectomy, the support region 618 can support the remaining breast tissue.
System 610 includes a medical assembly 630 that includes a medical cushion 632 having a first surface 634 and a second inward surface 636. The medical assembly 630 may include an inner surface member 638 having a first surface 640 and a second inward surface 642. Inner surface member 638 can be coupled to second surface 636 of medical cushion 632 on first surface 640. The medical assembly 630 may further include an outer surface member 644 that has a first surface 646 and a second inward surface 648. The outer surface member 644 can connect the first surface 634 of the cushion 632 to the second surface.
The sealing subsystem 660 provides a fluid seal sufficient to maintain a reduced pressure against the patient's epidermis at the desired support area 618 when under reduced pressure from the reduced pressure subsystem 680. The sealing subsystem 660 can take many different forms. This embodiment includes an overdrape 662 that covers the medical cushion 632 and extends beyond the peripheral edge 650 of the medical cushion 632 to form an extension 664, to which a seal 667 is applied. A fluid seal is formed between the skin and the skin. The seal 667 can take many forms, such as an adhesive, a sealing tape 668 or strip, a double-sided sealing tape, a glue, a hydrocolloid, a hydrogel, or other sealing means. The seal 667 can also include additional components as shown in FIG.
Referring now to FIG. 13, the closure member 667 can simply be a tape 668 or an adhesive, as described above, or can further include a sealing cushion 670 that is under higher tension than the medical cushion 632. . The sealing cushion 670 has a portion of the overdrape 662 on the sealing cushion 670, which may form a compartment through which the decompression subsystem 680 communicates decompression, or from the decompression subsystem 680. May be fluidly coupled to the medical cushion 632 to receive the fluid.
Referring now to FIG. 14, an exemplary alternative embodiment of the seal 667 is shown. In this embodiment, the outer member 644 and the inner member 638 are disposed adjacent to each other beyond the peripheral edge 650. The second surface 648 of the outer surface member 644 and the first surface 640 of the inner surface member 638 can be connected to each other by any known means. These members can be used in many different ways, including one of the following: using adhesives such as acrylic adhesives, silicone adhesives, hydrogels, hydrocolloids, or by thermal bonding, ultrasonic bonding and radio frequency bonding. They can be joined by joining or by other means. The coupling can be done in a pattern or more completely. Structures can also be added to the bond to make the material act anisotropically in the desired direction. The embodiment of FIG. 14 shows an adhesive strip 674 that is applied between the second surface 642 of the inner member 638 and the patient's epidermis 611. Before the adhesive strip 674 is applied to the skin 611, the adhesive strip 674 can be covered with a removable backing material or strip.
Here, mainly with reference to FIGS. 10 to 12, the support force transmitted to the support region 618 regarding the treatment bra 612 will be described. The bra 612 is formed as described above with respect to the medical assembly 630 and includes a first breast cup 682 and a second breast cup 684. In forming breast cups 682 and 684 it may be necessary to add one or more seams 686. Each breast cup 682, 684 forms a pocket, such as pocket 688 shown in FIG. The pocket 688 is for receiving breast tissue 614 or, in the case of a mastectomy, covered with a superabsorbent material to assist in the process of collecting exudate and to apply pressure to the underlying wound. A temporary post-surgical prosthesis such as a silicone gel insert may be received. In alternative embodiments, a single cup may be formed that covers both breasts, or more generally a single cup that covers a portion of the patient's chest.
The therapeutic bra 612 may be bifurcated to have a separate cushion with a separate sealing subsystem for each breast cup 682, 684, providing different pressure levels to each breast cup 682, 684. Accommodate different sizes or conditions. For example, if one breast is the subject of a mastectomy and the other is not, a different vacuum may be desired.
Referring now primarily to FIG. 12, the therapeutic bra 612 may have a transition region 652 that includes a coupling element 654. The coupling element 654 may be a fibrous material and one or more fasteners 656 that connect with the receiving fasteners on opposing transition regions 652 (not clearly shown, but similar to the fasteners 456 of FIG. 7). The fastener 656 may be a hook-and-loop fastener, a zipper member, a snap, or other means. In some situations, it may be desirable to apply a drape tape on top of the fastener 456 to provide a suitable fluid seal. Depressurization subsystem 680 is only partially shown, and communicates depressurization via depressurization conduit 687, which is in fluid communication with medical cushion 632 via depressurization interface 692, such as L-shaped terminal 694.
In operation, the system 610 is utilized by placing a therapeutic bra 612 on the torso 604 so that at least a portion of the cushion 632 is adjacent to the breast tissue 614 and preferably adjacent to the support region 618. The medical assembly 630 forms a releasable circumferential connector 698 with the coupling element 654 and fastener 656, which holds the therapeutic bra 612 in place even before decompression is applied from the decompression subsystem 680. When the treatment bra 612 is in place, the decompression subsystem 680 is activated and the decompression is transmitted to the medical cushion 632 via the decompression connection 692. The medical cushion 632 collapses and contracts under the influence of reduced pressure, thereby creating tension across the circumferential connector 698 and applying a component of compression and support (upward) force to the support region 618 or breast tissue 614. provide.
The system and device have been applied to various body parts, such as the abdomen, breast, but other uses are included. For example, the system can be used on a human thigh, where the cushion assembly is held in place by a pair of shorts resembling cycling shorts. As another example, the system and apparatus described for breast tissue may be modified to form a large single front cup, which can be used to lift and support pannus or other hanging tissue pieces. it can. As yet another example, a vacuum cup made in a manner similar to that presented for breast tissue can be used as a testicular support post-operatively and incorporated into shorts.
According to another exemplary embodiment, a method of providing force to at least a portion of a person's curved body part includes disposing a medical assembly on the curved body part. The medical assembly includes an inner surface member for placement on a desired treatment area and having a first surface and a second inward surface. The medical cushion has a first surface and a second inward surface. The second inward surface of the medical cushion is disposed to face the first surface of the inner surface member. The medical assembly may be sealed against a curved body part. The method further includes providing a reduced pressure to the medical assembly. When reduced pressure is applied, the medical cushion changes from a first volume under atmospheric pressure (V 1 ) to a second volume under reduced pressure (V 2 ). That is, the first volume is greater than or equal to the second volume: V 1 > V 2 . As the volume changes, a force is generated having a direction that includes a compression portion, a lifting portion, or an inward closing portion.
While the invention and its advantages have been disclosed in the context of certain exemplary, non-limiting embodiments, various modifications, without departing from the scope of the invention, as defined by the appended claims, It should be understood that substitutions, substitutions and modifications can be made. It will be appreciated that any feature shown in relation to any one embodiment is applicable to any other embodiment.
In a system to empower a patient's treatment area,
A medical assembly for placement on a patient's epidermis surrounding the treatment area,
A longitudinal portion having a first end and a second end;
A medical cushion having a first surface and a second inward surface;
An outer skin member surrounding the medical cushion, the outer skin member,
An inner surface member having a first surface and a second inward surface and configured to provide a barrier between the medical cushion and the epidermis, the second inward surface of the medical cushion An inner surface member disposed adjacent to the first surface of the inner surface member;
An outer surface member having a first surface and a second inward surface, wherein the second inward surface of the outer surface member is disposed adjacent to the first surface of the medical cushion. A medical assembly comprising:
A sealing subsystem for providing a fluid seal to the medical assembly ;
The system wherein the inner member comprises an elastic material .
The system of claim 1, wherein the inner member includes spandex.
The system of claim 1, wherein the outer member comprises an elastic material.
The system of claim 1, wherein the outer member includes spandex.
The system of claim 1, wherein the medical cushion includes an anisotropic cushion material having a first axis, a second axis, and a third axis, and tension applied along the first axis is the second axis. A system characterized by causing a 1: 1 or more reaction of the anisotropic cushion material along an axis.
The system according to claim 1, wherein the treatment area is a curved body part.
The system according to claim 1, wherein the force applied to the treatment area is a compressive force.
The system of claim 1, wherein the medical cushion includes a cushion material having a density of 25 kg / m 3 or greater.
The system of claim 1, further comprising a releasable circumferential member coupled to the first end and the second end of the medical assembly.
The system of claim 9 , wherein the releasable circumferential member is adapted to releasably connect a first end of the medical assembly to a second end of the medical assembly. system.
The system of claim 1, wherein the system is adapted to couple a first end of the medical assembly to a second end of the medical assembly for releasably attaching the medical assembly to the treatment region. Feature system.
10. The system of claim 9 , wherein the releasable circumferential member includes a coupling element and a releasable fastener.
The system of claim 1, further comprising a sealing subsystem, the sealing subsystem comprising:
An overdrape extending over the outer member;
A system comprising a skin surrounding the treatment area and a seal for providing a fluid seal to the overdrape.
The system of claim 13 , further comprising a decompression subsystem, wherein the decompression subsystem is:
A decompression interface coupled to the sealing subsystem;
A system comprising: a reduced pressure conduit for providing reduced pressure from the reduced pressure source to the reduced pressure interface.
The system of claim 1, wherein the medical assembly is operable to generate a directional force under reduced pressure.
The system of claim 1, wherein the medical assembly is operable to generate a lifting force under reduced pressure.
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