Patent application number | Description | Published |
20090192499 | ENCLOSURE-BASED REDUCED PRESSURE TREATMENT SYSTEM - A reduced pressure treatment appliance is provided for enclosing and providing reduced pressure treatment to a portion of a body of a patient. The reduced pressure treatment appliance may be used to treat wounds and other conditions, such as lymphedema, varicose veins, venous insufficiency and stasis, and other infirmities. In some embodiments, the appliance comprises an enclosure that encloses the portion of the body to be treated for purposes of applying a reduced pressure to the enclosed portion of the body. In other embodiments, the wound treatment appliance also includes a vacuum system to supply reduced pressure to the portion of the body to be treated in the volume under the enclosure. In yet other embodiments, the treatment appliance also includes wound packing means to prevent overgrowth of the wound or to encourage growth of wound tissue into an absorbable matrix comprising the wound packing means. In still other embodiments, a suction bulb may be used to provide a source of reduced pressure to an enclosure that encloses the portion of the body to be treated. Finally, methods are provided for using various embodiments of the treatment appliance. | 07-30-2009 |
20100042074 | AUXILIARY POWERED NEGATIVE PRESSURE WOUND THERAPY APPARATUSES AND METHODS - A negative pressure wound therapy apparatus that can include a wound dressing, a fluid collection device, a vacuum pump comprising a pump motor, and tubing can be powered by auxiliary power sources such as high efficiency batteries, photovoltaic panels or cells, fuel cells, combustion generators, human powered generators, or other mechanical, electrical, or chemical power sources such as hand operated dynamos or wound springs, or any combination of the foregoing. Additionally, the apparatus can include a high efficiency pressure controller for controlling the output of the vacuum pump. In some embodiments, the pressure controller can control the pump without using a processor, and can have other features such as an intermittent delay function and an anti-stall mechanism to reduce the energy consumption of the apparatus. | 02-18-2010 |
20100100075 | CONTROL CIRCUIT AND METHOD FOR NEGATIVE PRESSURE WOUND TREATMENT APPARATUS - A negative pressure wound therapy apparatus can include a wound dressing, a fluid collection container, a vacuum pump comprising a pump motor, and tubing. Additionally, the apparatus can include a pressure sensor that measures a pressure in the tubing. One or more tubes can channel a fluid between the wound dressing, the fluid collection canister, and the pump. In addition, first and second control circuits can be provided for controlling the pump motor without using a processor. The first control circuit can generate a difference signal between a desired pressure input and a pressure sensor input, and can further generate a motor control signal responsive to the difference signal. Moreover, a second control circuit can provide an override signal based at least in part on the difference signal and at least one reference signal. The override signal beneficially overrides the motor control signal to prevent the pump motor from stalling. | 04-22-2010 |
20100106114 | DRESSING - A dressing ( | 04-29-2010 |
20100218305 | Negative pressure protection system - A negative pressure protective system is provided for protection of persons (including animals) from harmful environments, such as environments containing hazardous materials. In one aspect, the system provides for protection of extremities, such as hands, wrists, feet and ankles, by enclosing the extremities with an extremity enclosure that is maintained at negative pressure or a vacuum. The system may also provide for an extremity liner and sensors to monitor conditions in the enclosure. The enclosure may also be used in conjunction with environmentally controlled enclosures, such as may be used in laboratories. In other aspects, the system provides for a partial body casing that encloses the torso and a portion of the neck, arms and legs. The partial body casing may be used with head, hand or foot casings that are also under negative pressure. In still other aspects, the system provides for a whole body casing, which is maintained at negative pressure and encloses the entire body, except for the head and a portion of the neck. | 09-02-2010 |
20100298792 | SUSTAINED VARIABLE NEGATIVE PRESSURE WOUND TREATMENT AND METHOD OF CONTROLLING SAME - Disclosed herein are systems and methods for providing reduced or negative pressure, and more particularly cyclical reduced pressure, to treat a wound. The system can include a wound dressing, a fluid collection container, a suction source, filters, and conduits. In addition, the system can include a control device and sensors. The sensors may be configured to monitor certain physiological conditions of a patient such as temperature, pressure, blood flow, blood oxygen saturation, pulse, cardiac cycle, and the like. Application of cyclical reduced pressure between two or more values below atmospheric pressure may be synchronized with the physiological conditions monitored by the sensors. Certain embodiments of the system utilize an air reservoir and one or more valves and pressure sensors or gauges to allow for rapid cycling of the level of reduced pressure within the wound dressing between two or more reduced pressure values. | 11-25-2010 |
20130116637 | CONTROL CIRCUIT AND METHOD FOR NEGATIVE PRESSURE WOUND TREATMENT APPARATUS - A negative pressure wound therapy apparatus can include a wound dressing, a fluid collection container, a vacuum pump comprising a pump motor, and tubing. Additionally, the apparatus can include a pressure sensor that measures a pressure in the tubing. One or more tubes can channel a fluid between the wound dressing, the fluid collection canister, and the pump. In addition, first and second control circuits can be provided for controlling the pump motor without using a processor. The first control circuit can generate a difference signal between a desired pressure input and a pressure sensor input, and can further generate a motor control signal responsive to the difference signal. Moreover, a second control circuit can provide an override signal based at least in part on the difference signal and at least one reference signal. The override signal beneficially overrides the motor control signal to prevent the pump motor from stalling. | 05-09-2013 |
20130144233 | SUSTAINED VARIABLE NEGATIVE PRESSURE WOUND TREATMENT AND METHOD OF CONTROLLING SAME - Disclosed herein are systems and methods for providing reduced or negative pressure, and more particularly cyclical reduced pressure, to treat a wound. The system can include a wound dressing, a fluid collection container, a suction source, filters, and conduits. In addition, the system can include a control device and sensors. The sensors may be configured to monitor certain physiological conditions of a patient such as temperature, pressure, blood flow, blood oxygen saturation, pulse, cardiac cycle, and the like. Application of cyclical reduced pressure between two or more values below atmospheric pressure may be synchronized with the physiological conditions monitored by the sensors. Certain embodiments of the system utilize an air reservoir and one or more valves and pressure sensors or gauges to allow for rapid cycling of the level of reduced pressure within the wound dressing between two or more reduced pressure values. | 06-06-2013 |
20140163493 | CONTROL CIRCUIT AND METHOD FOR NEGATIVE PRESSURE WOUND TREATMENT APPARATUS - A negative pressure wound therapy apparatus can include a wound dressing, a fluid collection container, a vacuum pump comprising a pump motor, and tubing. Additionally, the apparatus can include a pressure sensor that measures a pressure in the tubing. One or more tubes can channel a fluid between the wound dressing, the fluid collection canister, and the pump. In addition, first and second control circuits can be provided for controlling the pump motor without using a processor. The first control circuit can generate a difference signal between a desired pressure input and a pressure sensor input, and can further generate a motor control signal responsive to the difference signal. Moreover, a second control circuit can provide an override signal based at least in part on the difference signal and at least one reference signal. The override signal beneficially overrides the motor control signal to prevent the pump motor from stalling. | 06-12-2014 |
20150025487 | INSTRUCTIONAL MEDICAL TREATMENT SYSTEM - The present invention discloses an appliance for administering medical treatment to a person, as well as methods of using the appliance. In various embodiments, the appliance may be comprised of a medical device, an electronic processor, an electronic display (such as a liquid crystal display (LCD)), an audio output device (such as a piezoelectric speaker/microphone), electronic controls for controlling the operation of the electronic processor, and an electronic input receptacle (such as a DVD drive or USB port) adapted to receive and electronically access an electronic storage device (such as a DVD or flash memory device). The electronic processor or electronic storage device or both have information related to use and operation of the medical device digitally stored therein, so that the user of the appliance has ready access to instructional materials. Thus, the appliance includes an internal system for instructing the user in the use of the medical device. | 01-22-2015 |