Brightwake Limited

Convatec Technologies, Inc.

Convatec Limited

Tsi Technology Limited

Stephen Michael Cotton

Bryony Jayne Lee

Terence Gourlay

Matthew Tasker

Matthew Anthony Tasker

An apparatus () for negative pressure wound therapy comprises a source of reduced pressure () and first () and second () chambers, the first chamber being in fluid communication with the source of reduced pressure such that a negative pressure may be generated in the first chamber, the negative pressure being prevented from exceeding a predetermined value by way of a pressure release means (), and the second chamber comprising means () for establishing a fluid connection with a wound. A valve () between the first and second chambers permits the negative pressure in the second chamber to increase in response to an increase in the negative pressure in the first chamber and prevents the negative pressure in the second chamber from dropping in response to a drop in the negative pressure in the first chamber.

Relating to apparatus negative pressure wound therapy

A negative pressure wound therapy dressing comprising a drainage tube. The drainage tube comprises a tube knitted or braided from monofilament yarn and surrounded by an impermeable sheath. Also disclosed is a method of treating a wound using the negative pressure wound therapy dressing, and the knitted or braided tube for use in medical applications.

Wound dressing

An absorbent wound dressing () comprising a superabsorbent material () that is in fluid communication with the surface of a wound to which the dressing is applied when in use. The superabsorbent material () is enclosed in an envelope () having a wound-facing surface that is knitted or woven from a yarn comprising gelling fibres.

Absorbent wound dressings

Apparatus for treating blood. A device () for separating plasma from blood comprises a blood flow path () including formations () for agitating blood flow along the blood flow path and a separation membrane () with a first surface in fluid communication with the blood flow path. The device may be comprised in an extracorporeal blood circuit and used in a method for separating plasma from blood.

Plasmapheresis device

Apparatus negative pressure wound therapy

Vacuum pump

A wound dressing including a layer in the form of a strip and including gel-forming fibers, the strip having longitudinal lines of stitches formed from a thread and transverse lines of stitches formed from a thread. In certain forms, the wound dressing includes at least one stitch free column.

A wound dressing including a nonwoven absorbent layer including a layer of fabric comprising gel-forming fibers. The absorbent layer is gathered in a longitudinal direction by stitching through the layer of fabric using one or more resilient threads or yarns and an inelastic thread or yarn. The resilient and inelastic threads or yarns gather the layer of fabric so that the layer of fabric in use is configured to maintain close conformability with a wound during movement, and to elongate by 35% to 85% and then recover.

A non-adhesive absorbent wound dressing () is suitable for application about a jointed limb. The wound dressing () has a first portion () adapted to conform to and wrap around an upper part of the limb, a second portion () adapted to conform to and wrap around a lower part of the limb, and a hinge portion () between said first portion () and said second portion (), said hinge portion () in use lying adjacent to the joint of the limb. The wound dressing () also comprises a porous wound contact sheet () and a substantially liquid-impermeable backing sheet (), the wound contact sheet () and the backing sheet () being bounded () together at their periphery and along lines that define a plurality of pockets () in both the first portion () and the second portion (), the pockets () containing absorbent material ().

Absorbent wound dressing for wrapping around jointed limbs

A wound dressing is in the form of a strip or a ribbon. The strip or ribbon is made of gel-forming fibers and has longitudinal lines of stitches formed from a thread and transverse lines of stitches formed from a thread.

A non-adhesive absorbent wound dressing () is suitable for application about a jointed limb. The wound dressing () has a first portion () adapted to conform to and wrap around an upper part of the limb, a second portion () adapted to conform to and wrap around a lower part of the limb, and a hinge portion () between said first portion () and said second portion (), said hinge portion () in use lying adjacent to the joint of the limb. The wound dressing () also comprises a porous wound contact sheet () and a substantially liquid-impermeable backing sheet (), the wound contact sheet () and the backing sheet () being bonded () together at their periphery and along lines that define a plurality of pockets () in both the first portion () and the second portion (), the pockets () containing absorbent material ().

A device for collecting cellular material from a fluid sample comprises first and second chambers that are releasably connected and which define a fluid flow path from the first chamber to the second chamber. A porous membrane is between the chambers when they are connected to each other, in the fluid flow path. An absorbent body is positioned in close proximity to the downstream surface of the porous membrane, and a resilient member is arranged to urge the absorbent body towards the porous membrane. In use, a sample introduced into the first chamber contacts the upstream surface of the porous membrane and fluid is drawn through the porous membrane and is absorbed by the absorbent body. Cellular material is retained upon the upstream surface of the porous membrane. After separation of the chambers, the porous membrane can be removed from the device for analysis of the deposited cellular material.

Filtration device

A wound dressing comprising an absorbent layer, the absorbent layer being gathered in a longitudinal direction by one or more resilient yarns.

A releasably adhesive laminate () comprises a structural layer () carrying on at least part of one side thereof a hydrophobic gel () and on at least part of the other side thereof a pressure-sensitive adhesive (). The structural layer () is preferably a film of synthetic plastics material, eg polyurethane. The pressure-sensitive adhesive () is preferably an acrylic adhesive, and the hydrophobic gel () is preferably a silicone gel. The laminate () may be used as a skin contact component of a wound dressing or in numerous other applications.

Growing community of inventors

Nottingham, United Kingdom

Stephen Michael Cotton