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GB2511523A - A vacuum Indicator - Google Patents

A vacuum Indicator Download PDF

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Publication number
GB2511523A
GB2511523A GB1303929.2A GB201303929A GB2511523A GB 2511523 A GB2511523 A GB 2511523A GB 201303929 A GB201303929 A GB 201303929A GB 2511523 A GB2511523 A GB 2511523A
Authority
GB
United Kingdom
Prior art keywords
indicator
vacuum
vacuum indicator
deformable membrane
state
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB1303929.2A
Other versions
GB2511523A8 (en
GB2511523B (en
GB201303929D0 (en
GB2511523B8 (en
Inventor
Kristopher Carver
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB1303929.2A priority Critical patent/GB2511523B8/en
Publication of GB201303929D0 publication Critical patent/GB201303929D0/en
Publication of GB2511523A publication Critical patent/GB2511523A/en
Publication of GB2511523B publication Critical patent/GB2511523B/en
Application granted granted Critical
Publication of GB2511523A8 publication Critical patent/GB2511523A8/en
Publication of GB2511523B8 publication Critical patent/GB2511523B8/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/08—Means for indicating or recording, e.g. for remote indication
    • G01L19/10—Means for indicating or recording, e.g. for remote indication mechanical
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/05—Bandages or dressings; Absorbent pads specially adapted for use with sub-pressure or over-pressure therapy, wound drainage or wound irrigation, e.g. for use with negative-pressure wound therapy [NPWT]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/71—Suction drainage systems
    • A61M1/73—Suction drainage systems comprising sensors or indicators for physical values
    • A61M1/732—Visual indicating means for vacuum pressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
    • A61M1/91—Suction aspects of the dressing
    • A61M1/917—Suction aspects of the dressing specially adapted for covering whole body parts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
    • A61M1/96—Suction control thereof
    • A61M1/966—Suction control thereof having a pressure sensor on or near the dressing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L21/00—Vacuum gauges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
    • G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
    • G01L7/08—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges of the flexible-diaphragm type
    • G01L7/086—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges of the flexible-diaphragm type with optical transmitting or indicating means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow
    • A61M2205/3344—Measuring or controlling pressure at the body treatment site
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2210/00—Anatomical parts of the body
    • A61M2210/06—Head

Landscapes

  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Anesthesiology (AREA)
  • Hematology (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Packages (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

A vacuum indicator 12 comprising an indicator-element 20 and a deformable membrane 22, wherein when the membrane 22 is in a first state the indicator element is obscured, and when the membrane is in a second state the extent to which the indicator-element is obscured is reduced. The membrane is configured to transition from the first state to the second state on exposure to a decrease in surrounding pressure. The indicator element may comprise a protuberance 26 and the protuberance may project in a direction substantially perpendicular to the membrane. The membrane may comprise a foam material and the membrane may also comprise a guide-hole 28 to house the protuberance. A vacuum assembly 12 comprising first and second skin layers 14 and 16 defining a cavity 18 wherein vacuum indicator 10 is positioned. First and/or second skin layers may be light-permeable, or may be translucent or may be transparent. The assembly 12 may comprise a channel for evacuating fluid from within the cavity.

Description

A VACUUM INDICATOR
Technical Field
The present invention is in the field of indicators, in particular but not limited to a vacuum indicator.
The present invention is also directed towards a vacuum indicator assembly.
Background
The use of a \TCUU1fl is becoming morc coimnon in a number of applications.
A vacuum may be dcfined as an enclosed space from which matter, especially air, has bccn partially removed so that the matter or gas remaining in thc space exerts lcss pressure than the atmosphere.
It is well imown to use the application of a vacuum in the food industry for canning or packaging in which air is removed from a container to preserve and/or prevent deterioration of the contents of the container. Generally these are done on a large commercial scale.
Tn addition, a vacuum may be used to save space for storage by reducing the vcdurne of packed clothes by rcmoving thc air in a sealcd bag. Thcsc so called VCUUfl1 storagc bags are quite popular due to the benefits they provide.
The use of a vacuum has even extended to the culinary industry where vacuum packaging/sealing is used during the cooking process to h&p seat in the flavour of the item being cooked.
The usc of a vacuum has also extended into the medical field as disclosed in 0B2461048. GB2461048 discloses a vacuum wound dressing comprising a sealed enclosure having at least one compartment and means for evacuating air from the at least one compartment wherein the evacuation of air from the at least one compartment results in the wound dressing applying pressure onto a body member or wound in order to reduce the risk of swelling or stem bleeding of the wound.
In a number of applications, the integrity of the pressure differential caused by the vacuum state is important wherein failure of which can have one or more unwanted or adverse effects.
Statement of Invention
In accordance with a first aspect, the present invention provides a vacuum indicator comprising: an indicator element; and a deformable membrane, wherein when the deformable membrane is in a first state the indicator element is obscured, and when the deformable membrane is in a second state the extent to which the indicator e'ement is obscured is reduced) the deformaNe membrane being configured to transition from the first state to the second state on exposure to a decrease in surrounding pressure.
The invention provides a means by which a user can easily check that the integrity of the pressure differential caused by a vacuum state has not failed or been compromised, thus reducing or mitigating the risk of unwanted or adverse effects caused by said failure as a user is able to take action to rectify the issue.
Optionally, the deformable membrane is configured to transition from the first state to the second state on exposure to a decrease in surrounding pressure towards a pressure that is significantly lower than atmospheric pressure.
In exemp'ary embodiments of the invention) the indicator element comprises an optical indicator.
The optical indicator facilitates the indication to a user of when a required vacuum state has been reached during the air evacuation process. It also facilitates the indication to a user of a change in the maintenance of a vacuum state.
Optionally, the optical indicator comprises a different hue to the deformable membrane.
The use of a different hue facilitates the identification of the optical indicator.
In exemplary embodiments of the invention) the optical indicator may comprise a plain coloured surface or a vividly coloured surface.
In exemplary embodiments of the invention) the indicator element comprises a protuberance.
Optionally, the protuberance projects in a direction substantially perpendicular to the deformable membrane.
Optionally, the deformable membrane comprises a foraminous material.
The foraminous material may be any suitable foraminous material, for example, the deformaNe membrane may comprise a foam material.
In exemplary embodiments of the invention, wherein the indicator element comprises a protuberance) the deformable membrane comprises a guide-hole thereth rough, said guide-hole adapted to house the protuberance.
Optionally, the vacuum indicator may further comprise a housing adapted to receive said deformable membrane.
In accordance with a second aspect, the present invention provides a vacuum indicator assembly comprising: a vacuum indicator according to the first aspect of the invention; and a first skin layer and a second skin layer defining a cavity therebetween, wherein the vacuum indicator is positioned within said cavity.
Optionally) the first skin layer and/or the second skin ayer is light permeable.
In exemplary embodiments, the first skin layer and/or the second skin layer is translucent.
In exemplary embodiments, the first skin layer and/or the second skin layer is transparent.
Optionally, the vacuum indicator assemNy further comprises a channel for evacuating fluid from within the cavity.
Brief Description of the Drawings
Figure 1 depicts an exploded view of the features of an embodiment of a vacuum indicator assembly in accordance with the invention; Figure 2 is a cross-sectional view of the vacuum indicator assembly of figure 1 with the deformable membrane in a first state; Figure 3 is a plan view of the vacuum indicator assembly of figure 1 with the deformable membrane in a first state; Figure 4 is a cross-sectional view of the vacuum indicator assembly of figure 1 with the deformable membrane in a second state; Figure 5 is a plan view of the vacuum indicator assembly of figure 1 with the deformable membrane in a second state; and Figure 6 is a schematic view of the incorporation of an embodiment of a vacuum indicator assembly according to the invention in a vacuum wound dressing.
Detailed Description
Throughout the description and claims of this specification, the words "comprise" and "contain" and variations of the words, for example "comprising" and "comprises", means "including but not limited to") and is not intended to [and does not) exclude other components, integers or steps.
Throughout the description and claims of this specification, the singular encompasses the plural unless the context otherwise requires. In particular, where the indefinite article is used, the specification is to be understood as contemplating plurality as well as singularity, unless the context requires otherwise.
Features, integers or characteristics described in conjunction with a particular aspect, embodiment or example of the invention are to be understood to be applicable to any other aspect, embodiment or example described herein unless incompatible therewith.
Referring to figures 1 to 5, an embodiment of a vacuum indicator assembly 10 according to the invention is shown.
The vacuum indicator assembly 10 comprises of vacuum indicator 12, a first skin layer 14 and a second skin layer 16 defining a cavity 18 therebetween.
The vacuum indicator 12 is positioned within the cavity 18 and comprises an indicator &ement 20 and a deformable membrane 22.
In the embodiment shown, the vacuum indicator 12 further comprises a housing 24 adapted to receive the deformable membrane 22. The housing 24 is beneficial in that it facilitates the positioning of the membrane 22 relative to the indicator element 20.
The deformable membrane 22 is configured to transition from a first state [see figure 2) to a second state [see figure 4) on exposure to a decrease in the surrounding pressure. In the embodiment shown, the deformable membrane 22 is configured to transition from the first state to the second state on an exposure to a decrease in surrounding pressure towards a pressure that is significantly lower than atmospheric pressure.
The deformable membrane 22 is arranged such that when in the first state, the indicator element 20 is obscured [see figure 3) and when in the second state, the extent to which the indicator element 20 [see figure 5) is obscured is reduced.
The deformable membrane 22 comprises a foraminous material in the form of a foam material. It would be understood that the deformable membrane 22 may comprise any suitable foraminous material.
The indicator element 20 comprises an optical indicator. In the embodiment shown, the indicator element 20 comprises a protuberance 26. The protuberance 26 projects in a direction substantially perpendicular to the deformable membrane 22 (see figures 2 and 4).
The deformable membrane 22 comprises a guide-hole 28 therethrough which is adapted to house the protuberance 26.
The protuberance 26 comprises a surface 30 comprising a different hue to the deformaNe membrane 22. The surface 30 maybe a plain coloured surface or a vividly coloured surface. For example if the deformable membrane 22 is grey in colour, the surface 30 may be white in colour i.e. a plain coloured surface or be luminous green in colour i.e. a vividly coloured surface.
The first skin layer 14 and second skin layer 16 are Ught permeable. it would be understood that it may only be necessary for one of the skin layers 14,16 to be light permeable.
The first skin layer 14 and the second skin layer 16, depending on the application of the vacuum indicator assembly 10, may be translucent or transparent The vacuum indicator assembly 10 further comprises a channel 32 for evacuating fluid from within the cavity 18.
Referring to figure 6, the instalment of a vacuum indicator assembly 110 in accordance with another embodiment of the invention in a vacuum wound dressing is shown. The vacuum wound dressing 200 comprises a sealed enclosure 202 having at least one compartment 204 and is adapted to apply pressure onto the head of a user in order to reduce the risk of swelling or stem bleeding of a head wound.
in the embodiment shown, the first skin layer and the second skin layer of the vacuum indicator assembly 110 are integrally formed with the surface layers of the vacuum wound dressing 200 defining a compartment 204 thereof On application of the vacuum wound dressing 200 and the evacuation of air from the compartments 204 in order to apply pressure onto the head wound, the fluid will be evacuated from the cavity in which the deformable membrane 22 is positioned. This will result in the exposure of the deformable membrane 22 to a decrease in surrounding pressure and hence initiate transition of the deformable membrane 22 from the first state towards the second state.
When the required vacuum state is reached) the surface 30 of the protuberance 28 will be clearly visible through the first skin layer, an indication to a user that the required vacuum state has been obtained.
if there is a failure in the system and the vacuum state is compromised and is no longer maintained, the increase in surrounding pressure towards atmospheric pressure would result in the transition of the deformable membrane 22 from the second state towards the first state. As this occurs, the surface 30 of the protuberance will become more and more obscured. This change will indicate to a person that the pressure on the wound exerted by the vacuum wound dressing 200 has decreased and allow the person to take corrective action if or as required.
While the above mentioned embodiments have been described with the use of a housing, it would be understood that a housing is not essential for the working of the invention.
in a further embodiment (not shown) of a vacuum indicator assembly in accordance with the invention, the vacuum indicator does not comprise a housing and the retention of the deformable membrane in the require position is facilitated by means of the protuberance. in said embodiment, the protuberance is integrally formed with the second skin layer or affixed to the second skin layer.
in yet another embodiment (not shown) of a vacuum indicator assembly in accordance with the invention, the indicator element comprises a coloured surface instead of a protuberance with said coloured surface located between the deformaNe membrane and the second skin layer. if a housing is utilized, then the coloured surface will be a surface of the housing. if a housing is not utilized, then the coloured surface may be a integrally formed or separate to the second skin layer.
in this embodiment, the difference in hue between the deformable membrane and the coloured surface is such that when the deformable membrane is in the second state, the colour of the coloured surface is distinguishable from the colour of the deformaNe membrane.
While the invention has been described with reference to use in a wound dressing, it would be understood that its use is not limited thereto. For example the invention may easily be configured for use with vacuum storage bags, vacuum sealer bags etc.

Claims (18)

  1. CLAIMS1. A vacuum indicator comprising: an indicator element; and a deformable membrane, wherein when the deformable membrane is in a first state the indicator element is obscured, and when the deformable membrane is in a second state the extent to which the indicator element is obscured is reduced) the deformable membrane being configured to transition from the first state to the second state on exposure to a decrease in surrounding pressure.
  2. 2. A vacuum indicator according to claim 1 wherein the deformable membrane is configured to transition from the first state to the second state on exposure to a decrease in surrounding pressure towards a pressure that is significantly lower than atmospheric pressure.
  3. 3. A vacuum indicator according to claim 1 or claim 2 wherein the indicator element comprises an optical indicator.
  4. 4. A vacuum indicator according to claim 3 wherein the optical indicator comprises a different hue to the deformable membrane.
  5. 5. A vacuum indicator according to claim 3 or claim 4 wherein the optical indicator comprises a plain coloured surface or a vividly coloured surface.
  6. 6. A vacuum indicator according to any one of the preceding claims wherein the indicator element comprises a protuberance.
  7. 7. A vacuum indicator according to claim 6 wherein the protuberance projects in a direction substantially perpendicular to the deformable membrane.
  8. 8. A vacuum indicator according to any one of the preceding claims wherein the deformable membrane comprises a foraminous material.
  9. 9. A vacuum indicator according to claim 8 wherein the foraminous material is a S foam material.
  10. 10. A vacuum indicator according to daim 6, or any claim directly or indirectly dependent on claim 6, wherein the deformable membrane comprises a guide-hole therethrough, said guide-hole adapted to house the protuberance.
  11. 11. A vacuum indicator according to any one of the preceding claims further comprising a housing adapted to receive said deformable membrane.
  12. 12. A vacuum indicator assembly comprising: a vacuum indicator according to any one of claims 1 to 11; and first skin layer and a second skin layer defining a cavity therebetween, wherein the vacuum indicator is positioned within said cavity.
  13. 13. A vacuum indicator assembly according to claim 12 wherein the first skin layer and/or the second skin layer is light permeable.
  14. 14. A vacuum indicator assembly according to claim 13 wherein the first skin hyer and/or the second skin layer is translucent
  15. 15. A vacuum indicator assembly according to claim 13 wherein the first skin layer and/or the second skin byer is transparent
  16. 16. A vacuum indicator assembly according to any one of claims 12 to 15 further comprising a channel for evacuating fluid from within the cavity.
  17. 17. A vacuum indicator as generally hereinbefore described with reference to and/or illustrated in the accompanying drawings.
  18. 18. A vacuum indicator assembly as generally hereinbefore described with reference to and/or illustrated in the accompanying drawings.
GB1303929.2A 2013-03-05 2013-03-05 A vacuum Indicator Active GB2511523B8 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1303929.2A GB2511523B8 (en) 2013-03-05 2013-03-05 A vacuum Indicator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1303929.2A GB2511523B8 (en) 2013-03-05 2013-03-05 A vacuum Indicator

Publications (5)

Publication Number Publication Date
GB201303929D0 GB201303929D0 (en) 2013-04-17
GB2511523A true GB2511523A (en) 2014-09-10
GB2511523B GB2511523B (en) 2016-05-04
GB2511523A8 GB2511523A8 (en) 2016-06-22
GB2511523B8 GB2511523B8 (en) 2016-06-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB1303929.2A Active GB2511523B8 (en) 2013-03-05 2013-03-05 A vacuum Indicator

Country Status (1)

Country Link
GB (1) GB2511523B8 (en)

Cited By (29)

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GB2525658A (en) * 2014-05-01 2015-11-04 Jake Timothy Improved wound dressing
WO2019089118A1 (en) * 2017-10-30 2019-05-09 Kci Licensing, Inc. Systems, apparatuses, and methods for negative-pressure treatment with pressure delivery indication
WO2019086332A1 (en) * 2017-11-01 2019-05-09 Smith & Nephew Plc Negative pressure wound treatment apparatuses and methods with integrated electronics
US10384041B2 (en) 2005-09-07 2019-08-20 Smith & Nephew, Inc. Self contained wound dressing apparatus
US10463773B2 (en) 2005-09-07 2019-11-05 Smith & Nephew, Inc. Wound dressing with vacuum reservoir
WO2020072287A1 (en) * 2018-10-03 2020-04-09 Kci Licensing, Inc. Low-profile fluid conductors with treatment indicators
WO2020102049A1 (en) * 2018-11-14 2020-05-22 Kci Licensing, Inc. Apparatus, system, and method for mechanical indication of pressure
US10660994B2 (en) 2012-03-12 2020-05-26 Smith & Nephew Plc Reduced pressure apparatus and methods
US10744041B2 (en) 2007-11-21 2020-08-18 Smith & Nephew Plc Wound dressing
US10744242B2 (en) 2006-05-11 2020-08-18 Smith & Nephew, Inc. Device and method for wound therapy
WO2020109804A3 (en) * 2018-11-29 2020-10-08 Nexa Medical Limited Wound-dressing conditioning device
USD898925S1 (en) 2018-09-13 2020-10-13 Smith & Nephew Plc Medical dressing
US10898388B2 (en) 2015-04-27 2021-01-26 Smith & Nephew Plc Reduced pressure apparatuses and methods
US11096831B2 (en) 2016-05-03 2021-08-24 Smith & Nephew Plc Negative pressure wound therapy device activation and control
US11116669B2 (en) 2016-08-25 2021-09-14 Smith & Nephew Plc Absorbent negative pressure wound therapy dressing
US11123471B2 (en) 2017-03-08 2021-09-21 Smith & Nephew Plc Negative pressure wound therapy device control in presence of fault condition
US11160915B2 (en) 2017-05-09 2021-11-02 Smith & Nephew Plc Redundant controls for negative pressure wound therapy systems
US11173240B2 (en) 2016-05-03 2021-11-16 Smith & Nephew Plc Optimizing power transfer to negative pressure sources in negative pressure therapy systems
US11285047B2 (en) 2016-04-26 2022-03-29 Smith & Nephew Plc Wound dressings and methods of use with integrated negative pressure source having a fluid ingress inhibition component
US11305047B2 (en) 2016-05-03 2022-04-19 Smith & Nephew Plc Systems and methods for driving negative pressure sources in negative pressure therapy systems
US11554203B2 (en) 2017-11-01 2023-01-17 Smith & Nephew Plc Negative pressure wound treatment apparatuses and methods with integrated electronics
US11564845B2 (en) 2017-09-13 2023-01-31 Smith & Nephew Plc Negative pressure wound treatment apparatuses and methods with integrated electronics
US11564847B2 (en) 2016-09-30 2023-01-31 Smith & Nephew Plc Negative pressure wound treatment apparatuses and methods with integrated electronics
US11701265B2 (en) 2017-09-13 2023-07-18 Smith & Nephew Plc Negative pressure wound treatment apparatuses and methods with integrated electronics
US11707564B2 (en) 2017-11-01 2023-07-25 Smith & Nephew Plc Safe operation of integrated negative pressure wound treatment apparatuses
US11723809B2 (en) 2016-03-07 2023-08-15 Smith & Nephew Plc Wound treatment apparatuses and methods with negative pressure source integrated into wound dressing
US12005181B2 (en) 2016-12-12 2024-06-11 Smith & Nephew Plc Pressure wound therapy status indication via external device
US12005182B2 (en) 2019-05-31 2024-06-11 T.J.Smith And Nephew, Limited Systems and methods for extending operational time of negative pressure wound treatment apparatuses
US12083263B2 (en) 2019-03-20 2024-09-10 Smith & Nephew Plc Negative pressure wound treatment apparatuses and methods with integrated electronics

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US6470821B1 (en) * 1999-05-26 2002-10-29 Insulated Shipping Containers Method and apparatus for the evaluation of vacuum insulation panels
US6557462B1 (en) * 2001-12-28 2003-05-06 Wang Soo Chang Combined vacuum valve and vacuum indicator
US20100137775A1 (en) * 2008-11-25 2010-06-03 Spiracur Inc. Device for delivery of reduced pressure to body surfaces

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US6470821B1 (en) * 1999-05-26 2002-10-29 Insulated Shipping Containers Method and apparatus for the evaluation of vacuum insulation panels
US6557462B1 (en) * 2001-12-28 2003-05-06 Wang Soo Chang Combined vacuum valve and vacuum indicator
US20100137775A1 (en) * 2008-11-25 2010-06-03 Spiracur Inc. Device for delivery of reduced pressure to body surfaces

Cited By (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10384041B2 (en) 2005-09-07 2019-08-20 Smith & Nephew, Inc. Self contained wound dressing apparatus
US11896754B2 (en) 2005-09-07 2024-02-13 Smith & Nephew, Inc. Wound dressing with vacuum reservoir
US10463773B2 (en) 2005-09-07 2019-11-05 Smith & Nephew, Inc. Wound dressing with vacuum reservoir
US10744242B2 (en) 2006-05-11 2020-08-18 Smith & Nephew, Inc. Device and method for wound therapy
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