A fluid control device includes a housing. The housing includes a first main plate, a second main plate, and a side plate connecting the first main plate and the second main plate. The housing has a pump chamber defined by the first main plate, the second main plate, and the side plate. The fluid control device also includes a driver, a first hole that extends through the first main plate or the second main plate, and a first recess formed in the first main plate between a center and a circumference or the second main plate between a center and a circumference.

Embodiments of the improved stimulation device include a cup and a driver. The cup has a cavity surrounded by a rim. The driver comprises a plate disposed on an underside of the cup, a cam disposed adjacent to the plate, and a motor mechanically coupled to the cam. The driver is configured to intermittently vary a volume of the cavity of the cup from a first volume to a second volume without returning the cup from the second volume to the first volume. In some embodiments, the cup returns from the second volume to the first volume, in between intermittent varying from the first volume to the second volume, due to the resilient nature of the material of the cup and/or the configuration of the cup. This varying of the volume between the first and second volumes creates a pressure field in a chamber formed by the cavity and a user's skin.

Embodiments of the present invention relate to an improved stimulation device. Embodiments of the improved stimulation device includes a cup and a driver. The cup has a cavity surrounded by a rim. The driver comprises a plate disposed on an underside of the cup, a cam disposed adjacent to the plate, and a motor mechanically coupled to the cam. The driver comprises a cam pin affixed to the cam, and a bearing rotatably disposed on the cam pin. The bearing is mechanically coupled to a lifter. The lifter is mechanically coupled to a linear bearing, enabling a smooth reciprocating back-and-forth motion from the rotation of the motor. A top of the cup swells and unswells during an operation cycle of the driver.

Disclosed is a massage chair with improved stretching performance. The massage chair includes a seating unit (20); a backrest unit (10) with a pair of massage rollers (40) installed to left and right sides thereof; a footrest unit (30) or an ankle holder (33) provided to a front lower portion of the backrest unit (10) to hold both feet; and an upper body stretching unit (50) installed to a rear portion of the backrest unit (10) to lift a hand lever (51) by a driving force, in which when the hand lever (51) is lifted in a state in which a user holds the hand lever (51) by both hands, the whole body is stretched. The lower portion of the backrest unit (10) is optionally provided with a lumbar stretching unit (70) for stretching a waist of the user, and an air conditioner (460) for supplying air to the backrest unit (10), so that the user can get over feeling tired.

Disclosed embodiments provide a massager having at least one expandable chamber. In some embodiments, there is provided an expandable shaft chamber that is inflatable to push a stimulator towards the G-spot of the user to increase contact pressure in that area. This inflation can also allow for a hands-free experience by expanding the width of the shaft inside the vagina for a snug fit tight against the vaginal or rectum walls. In some embodiments, there is provided an expandable ring chamber that is inflatable to securely hold a massager device inside the vagina or rectum, allowing for a hands-free experience.

A relief valve in which a valve body is automatically properly opened/closed by pressure of gas while having a simple device structure, and a device including the relief valve. In a valve-closed state, a first pressure receiving surface portion receives pressure of gas from a valve hole to smoothly open a valve body, and in an open position after the valve is opened, a pressure receiving area is enlarged to a second pressure receiving surface portion, and the first pressure receiving surface portion and the second pressure receiving surface portion are surrounded by a peripheral wall portion formed on a back surface of the valve body. Thus, the valve body continuously receives the pressure with the pressure of the gas being reduced, thereby allowing the valve-opened state of the valve body to be stably maintained to set pressure.

Disclosed is a massage apparatus. The massage apparatus includes a vibration array including a plurality of vibration devices, a driver configured to vibrate the plurality of vibration devices, and a processor configured to control the driver to generate a stimulus at a stimulus point between the plurality of vibration devices by simultaneously vibrating two or more vibration devices among the plurality of vibration devices.

A device (900) includes a leg engaging section (101) and a foot engaging section (102 intersecting at a heel receiver (103). The leg engaging section and the foot engaging section defining a leg insertion aperture (104). A first compression wrap member (301) and a second compression wrap member (302) extend from the leg engaging section. An inflatable bladder (501) can be disposed along the leg engaging section between the leg insertion aperture and a compressible cushion layer (902). The inflatable bladder can be selectively inflatable through a connection tube (502) exiting the inflatable bladder at a non-orthogonal angle (504) relative to an edge (507) of the inflatable bladder. The leg engaging section can define at least one channel to permit the connection tube to exit the device.

Described herein are various embodiments of differential air pressure systems and methods of using and calibration such systems for individuals with impaired mobility. The differential air pressure systems may include an access assist device configured to help a mobility impaired user to stand in a pressure chamber configured to apply a positive pressure on a portion of the user's body in the sealed pressure chamber. The system may also include load sensors configured to measure the user's weight exerted inside and outside the chamber. The system may be calibrated by determining a relationship between the actual weight of the user and the pressure in the chamber, where the actual weight of the user may be measured by more than one load sensor and at least one load sensor is not in the pressure chamber.

A blood flow stimulator may help encourage blood flow in a limb of a patient. The blood flow stimulator may include a housing configured for sealing about the limb of the patient. The housing may include a sealable volume, and the sealable volume may receive the limb of the patient. The blood flow stimulator may include a seal, and the seal may be coupled with the housing. The seal may engage with at least a portion of the limb, for instance to segregate the sealable volume from a surrounding environment of the blood flow stimulator. The blood flow stimulator may include a conduit extending through the housing. The conduit mat help provide access to the sealable volume, for instance from the surrounding environment. In some examples, an adjustable stent is utilized to enhance blood flow within vasculature of a patient. A stent operator may change a size of the stent.