Abstract:
A portable negative pressure wound therapy system includes a dressing assembly for positioning over a wound to apply a negative pressure to the wound and a canister assembly. The canister assembly includes a control unit having a vacuum source and a controller and a collection canister in communication with the dressing assembly operable to receive fluid from the wound. The collection canister has ports to introduce a vacuum from the vacuum source into the collection canister. A tip sensor is provided to detect a change in an orientation of the canister assembly. The canister assembly also includes valve assemblies, each valve assembly corresponds to one of the ports. The controller communicates with each valve assembly to selectively open or close the port corresponding to the valve assembly based on an output from the tip sensor.
Abstract:
A foot cuff that is inflatable to apply compression to the foot to promote blood flow has a bladder formed of two layers of material secured together. An outer layer includes a foot-underlying portion that has a greater thickness and rigidity that an opposing inner layer. The outer layer directs expansion of the bladder upon inflation in the direction of the inner layer and toward the foot for increasing compressive force applied to the foot.
Abstract:
A foot cuff that is inflatable to apply compression to the foot to promote blood flow has a bladder formed of two layers of material secured together. An outer layer includes a foot-underlying portion that has a greater thickness and rigidity that an opposing inner layer. The outer layer directs expansion of the bladder upon inflation in the direction of the inner layer and toward the foot for increasing compressive force applied to the foot.
Abstract:
Apparatus and methods for radiofrequency (RF) welding are disclosed. RF power delivered to a welding platen of the apparatus is capacitively split into first and second RF power components of different magnitudes. The power components are simultaneously delivered to respective first and second die members to conduct an RF welding operation.
Abstract:
A welding apparatus includes first and second die members opposing one another. The first and second die members include opposing respective first and second perimeter-welding electrodes and opposing respective first and second tube-welding electrodes. The first perimeter-welding electrode and first tube-welding electrode define a first welding surface. The second perimeter-welding electrode and second tube-welding electrode define a second welding surface. A single source of high frequency energy is electrically connected to the perimeter-welding electrodes and to the tube-welding electrodes. Dielectric material is selectively disposed on the first welding surface such that the material is disposed on some but not all the first welding surface for reducing a strength of a high frequency electric field between the first and second perimeter-welding electrodes as compared to a strength of the high frequency electric field between at least a portion of the first and second tube-welding electrodes.
Abstract:
A compression sleeve is described as having a first sheet and a second sheet attached to the first sheet. The first and second sheets define at least one inflatable section. At least one conduit including a textured inner surface on each of the first and second sheets is disposed within the inflatable section.
Abstract:
Apparatus and methods for radiofrequency (RF) welding are disclosed. RF power delivered to a welding platen of the apparatus is capacitively split into first and second RF power components of different magnitudes. The power components are simultaneously delivered to respective first and second die members to conduct an RF welding operation.
Abstract:
An apparatus for promoting the healing of a wound includes a pressure-sensitive adhesive disposed around a periphery of the wound, and a membrane layer in positioned over the wound with a lower surface in contact with the pressure-sensitive adhesive to form a substantially fluid-tight seal to define reservoir over the wound in which a negative pressure may be maintained. In fluid communication with the reservoir is a vacuum source suitable for providing an appropriate negative pressure to the reservoir to stimulate healing of the wound. A resilient member is placed over an upper surface of the membrane layer, and a compression member is configured to apply a compressive force to the resilient member. The resilient member distributes the compressive force to the membrane layer to reinforce the fluid tight-seal.
Abstract:
An apparatus for promoting the healing of a wound includes a pressure-sensitive adhesive disposed around a periphery of the wound, and a membrane layer in positioned over the wound with a lower surface in contact with the pressure-sensitive adhesive to form a substantially fluid-tight seal to define reservoir over the wound in which a negative pressure may be maintained. In fluid communication with the reservoir is a vacuum source suitable for providing an appropriate negative pressure to the reservoir to stimulate healing of the wound. A resilient member is placed over an upper surface of the membrane layer, and a compression member is configured to apply a compressive force to the resilient member. The resilient member distributes the compressive force to the membrane layer to reinforce the fluid tight-seal.
Abstract:
A method of forming a bag assembly by RF welding includes generating from a single source of RF energy a high frequency electric field having a first strength between tube-welding electrodes of opposing die members and a second strength less than said first strength between perimeter-welding electrodes of the opposing die members. Subjecting a tube assembly and corresponding portions of sheets surrounding the tube assembly to the high frequency electric field of said first strength for a predetermined amount of time to weld the sheets to a tube along a tube-weld. Corresponding portions of the sheets between the perimeter-welding electrodes are subjected to the high frequency electric field of said second strength for said predetermined amount of time to weld the sheets together along a bladder perimeter-weld. The subjecting steps are performed simultaneously so that the bag assembly is formed in one welding operation.