A stair traversing device comprising a payload body for transporting a payload, a step frame, and a mechanism between the step frame and the payload body to move the step frame relative to the payload body along a cyclical path. The mechanism drives a movement of one of the payload body and the step frame along a first segment of the cyclical path from a retracted configuration to an extended configuration, and drives a movement of the other one of the payload body and the step frame along a second segment of the cyclical path back into the retracted configuration. The payload body and the step frame are configured to remain fixedly in position on a stair when the other one of the payload body and the step frame is moved. The mechanism is configured to maintain the relative orientation between the payload body and the stair.

A stair traversing device comprising a payload body for transporting a payload, a step frame, and a mechanism between the step frame and the payload body to move the step frame relative to the payload body along a cyclical path. The mechanism drives a movement of one of the payload body and the step frame along a first segment of the cyclical path from a retracted configuration to an extended configuration, and drives a movement of the other one of the payload body and the step frame along a second segment of the cyclical path back into the retracted configuration. The payload body and the step frame are configured to remain fixedly in position on a stair when the other one of the payload body and the step frame is moved. The mechanism is configured to maintain the relative orientation between the payload body and the stair.

Method and system are provided for creating a self-sealing pressurized limb enclosure for the assessment of pressure effects on the limb. Embodiments can be self-sealing in that the seal is created by the positive pressure in the enclosure relative to the external environment and does not necessitate contact pressure at the seal location that exceeds the pressure in the enclosure. The seal accounts for anatomical size differences as well as deformations in the size and shape of the limb due to pressure. Furthermore, the seal maintains function in the presence of skin and tissue movement. In operation, the system can be used by an individual without external assistance.

Disclosed is a pressure monitoring system for a patient that may include a measurement site, a tube, and a pressure transducer, in which, the tube is coupled between the measurement site of the patient and the pressure transducer and the tube contains a fluid for pressure measurement by the pressure transducer from the measurement site. The tube may comprise: a first tubing portion that includes an outer diameter and a plurality of inner diameters and that has a first tensile modulus, in which, the plurality of inner diameters of the first tubing portion form a plurality of fluid paths to contain the fluid; and, a second tubing portion, in which, the first and second tubing portions are coupled together to form the tube and the second tubing portion extends longitudinally with the first tubing portion in a continuous or intermittent manner.

Disclosed is a pressure monitoring system for a patient that may include a measurement site, a tube, and a pressure transducer, in which, the tube is coupled between the measurement site of the patient and the pressure transducer and the tube contains a fluid for pressure measurement by the pressure transducer from the measurement site. The tube may comprise: a first tubing portion that includes an outer diameter and a plurality of inner diameters and that has a first tensile modulus, in which, the plurality of inner diameters of the first tubing portion form a plurality of fluid paths to contain the fluid; and, a second tubing portion, in which, the first and second tubing portions are coupled together to form the tube and the second tubing portion extends longitudinally with the first tubing portion in a continuous or intermittent manner.

A pumpless wearable sphygmomanometer includes a wearable element, a first fluid strip, a second fluid strip and a control module. A first side of the wearable element is for contacting with a wearer. The first and second fluid strips are arranged in parallel on the first side and spaced apart for a predetermined distance. The control module is disposed on the wearable element and includes a first pressure sensing element, a second pressure sensing element and a processing unit. The first and second pressure sensing elements communicate with the first and second fluid strips, respectively, and are configured to sense a first fluid pressure and a second fluid pressure in the first and second fluid strips, respectively. The processing unit is electrically connected to the first and second pressure sensing elements and configured to analyze a difference between the first fluid pressure and the second fluid pressure.

A pumpless wearable sphygmomanometer includes a wearable element, a first fluid strip, a second fluid strip and a control module. A first side of the wearable element is for contacting with a wearer. The first and second fluid strips are arranged in parallel on the first side and spaced apart for a predetermined distance. The control module is disposed on the wearable element and includes a first pressure sensing element, a second pressure sensing element and a processing unit. The first and second pressure sensing elements communicate with the first and second fluid strips, respectively, and are configured to sense a first fluid pressure and a second fluid pressure in the first and second fluid strips, respectively. The processing unit is electrically connected to the first and second pressure sensing elements and configured to analyze a difference between the first fluid pressure and the second fluid pressure.

The present invention provides an arteriovenous pressure measurement device which allows noninvasive and accurate measurement of arteriovenous pressure, and also provides an arteriovenous pressure measurement method using the measurement device. The noninvasive arteriovenous pressure measurement device comprises a probe (20) for radiating ultrasound toward a blood vessel in the skin, a pressing part (10) for pressing the skin in a state of being placed between the skin and the probe (20), and a pressure sensor (33) for detecting a pressing force applied to the skin at the pressing part (10), the pressing part (10) having water (36) permeable to the ultrasound and a balloon (31) accommodating the water (36), the flexible container (31) being made of a flexible material permeable to the ultrasound, and an outer surface of the balloon (31) presses the skin.

The present invention provides an arteriovenous pressure measurement device which allows noninvasive and accurate measurement of arteriovenous pressure, and also provides an arteriovenous pressure measurement method using the measurement device. The noninvasive arteriovenous pressure measurement device comprises a probe (20) for radiating ultrasound toward a blood vessel in the skin, a pressing part (10) for pressing the skin in a state of being placed between the skin and the probe (20), and a pressure sensor (33) for detecting a pressing force applied to the skin at the pressing part (10), the pressing part (10) having water (36) permeable to the ultrasound and a balloon (31) accommodating the water (36), the flexible container (31) being made of a flexible material permeable to the ultrasound, and an outer surface of the balloon (31) presses the skin.

A blood pressure meter includes a pump and a first fluid path provided inside a main body. The first fluid path feeds a fluid from the pump to a fluid bladder or discharges the fluid from the fluid bladder. A pressure sensor is mounted on a first substrate disposed inside the main body. A second fluid path that introduces the fluid from the fluid bladder to the pressure sensor is provided. The second fluid path includes an inlet pipe that is integrally formed with a sensor package that incorporates the pressure sensor, and extends straight between the fluid bladder and the pressure sensor. A second substrate on which a blood pressure measurement element is mounted is disposed in a space that is located between the first substrate and the fluid bladder in a thickness direction and is adjacent to the second fluid path in a planar direction.