The negative pressure generator includes a chamber body with a suction nozzle; a piston, arranged inside the chamber body; and a driving device configured to drive the piston to reciprocated move inside the chamber body so as to generate negative pressure at the suction nozzle.

The invention relates to an adult choke pleasure enhancement adjustable pressure cuff device. Participants can engage in solo autoerotic asphyxiation (AEA) without accidentally suffocating to death. The adjustable cuff is inflatable and sized to encompass a participant's neck and has a timed safety release function. The participant can apply the device at default setting to fit snugly, but not impede blood flow. The participant can inflate the device to the desired level of pressure that would remain at that setting at participant's discretion. They can control what happens and for how long, as long as the participant is not incapacitated. However, if at any time, the controls/settings are not engaged by the participant, the device would automatically default to zero pressure after a set time. The use of the device therefore allows a participant to safely engage in solo AEA without risking injury or death.

A health care device includes a health care body for positioning a body part of a user, so as to maintain a first specific positional relationship with the body part, wherein the body part has an acupoint; an acupoint work piece for performing a health care work onto the use through the acupoint; and a work piece holder having a first end connected to the health care body and a second end for fixing the acupoint work piece, so that under the first specific positional relationship, the acupoint work piece performs the health care work under the condition that the acupoint work piece has a second specific positional relationship with the acupoint. A health care body, method and system are also provided.

Disclosed is a chest compression device. The chest compression device includes a back for supporting the back of a patient, a compression part for compressing the chest of the patient, a U-shaped support for supporting the compression part, a pair of driving parts for allowing the support and the compression part connected thereto to perform a vertical reciprocating movement, and a control part for controlling the operation of the pair of driving parts.

An orthopaedic device includes an upper exoskeleton (2, 4) and a lower exoskeleton (6), and a receiving actuator having a pivot-connection member (10). The exoskeleton is hinged with respect to one another via the pivot-connection member. A receiving transmission device (30) is designed to be able to transmit a movement to the pivot-connection member. At least a first hydraulic cylinder (20) is coupled to the receiving transmission device so as to be able to rotate said pivot-connection member. An emitting actuator has at least a first hydraulic emitting cylinder (51, 55), an emitting transmission device (60), and a motor device (70) coupled to the emitting transmission device. At least one pressurized-fluid-guiding line (42, 45) is designed to allow a hydraulic transmission of movement from the first emitting cylinder to the receiving actuator.

The present invention is directed to a massage chair having a massage chair frame, a massage and stretching system, and a noise-reducing, enclosure device. The frame includes a first end, a second end, a seat body area portion, and a back body area portion. The massage system includes at least one air massage element, an air pump, and at least one air valve device for regulating air flow into and out of the air massage element. The enclosure device includes an enclosure housing and noise-reducing material positioned inside the housing. The housing encloses the air pump and air valve device(s) during operation such that noise generated from or made by the air pump and air valve device(s) during operation is reduced, contained or eliminated. The present invention may include additional features: manual or automated armrest sliding, manual or automated shoulder massager with sliding mechanism, remote software update, media player holder, virtual reality player, wireless charger, hammering devices, heating acupuncture devices, and oxygen generator.

A lumbar retractor according to an embodiment comprises: a first fixing part for fixing the user's lumbar regions; a second fixing part for fixing the user's pelvic regions; and a connection part disposed between the first fixing part and the second fixing part to connect the first fixing part and the second fixing part, wherein the distance between the first fixing part and the second fixing part can be adjusted by changing the length of the connection part, and the first fixing part can press each of a plurality of segments of the user's lumbar regions individually.

This disclosure relates to improved massage chairs that include air cell apparatuses. A massage chair can include at least one air cell apparatus, which can be integrated into a shoulder portion, leg rest portion, arm portion, and/or other portion of the massage chair. An inflatable air bladder can be connected to each air cell apparatus. Each air cell apparatus can transition between a retracted position and an extended position. The air cell bladder can be configured to inflate when the air cell apparatus is in the extended position, thereby securing an individual to the massage chair. Various assemblies can be used to transition the air cell apparatus between the retracted and extended positions. Other embodiments are disclosed.

A compression device may include a compression plunger in operable communication with a fulcrum assembly and housing assembly in operable communication with a stepper assembly. The compression device may be constructed and arranged to allow a user to administer CPR to a patient by stepping on a portion of the stepper assembly to generate hydraulic power that may be utilized to move the compressor plunger to apply compressive force to the patient's chest. The compression device may include a housing assembly and fulcrum assembly constructed and arranged to provide for variable height and width such that patients of varying sizes can be accommodated and may receive CPR.

The present invention relates generally to the field of joint cracking. More specifically, the present invention relates to a joint cracking device. The device is primarily comprised of a body further comprised of at least one vertical support, at least one cushion, at least one hinge, at least one semi-circular member, and a base. To use the device, a user steps onto the base and positions their body within the semi-circular member. The user then presses a button to inflate an inflatable cuff on the interior surface of the member such that the user is secured within the member. Then, the member is rotated upwards such that the back of the user is cracked on the cushion, which is preferably convex in shape. Then, the member is returned to its original position, wherein the user can then crouch downwards to exit the member.