An airbag module comprises a control unit, a source of electric current managed by the control unit, a container wherein a gas is stored under pressure, and a hollow body with an inlet duct, in which an outlet of the container sealed by a pierceable membrane is tightly fitted, and an outlet duct on which an inflatable bag is tightly assembled. The airbag module further comprises an actuator assembly configured to pierce open the membrane sealing the container, said actuator assembly comprising a piercing member movably restrained to the body and at least one linear shape memory alloy wire actuator member that is electrically connected to the source of electric current and operably restrained to the piercing member so as to cause it to move beyond the pierceable membrane.

A garment configured to be worn on a human body includes at least one fabric portion provided on a torso portion or a limb portion of the garment. The at least one fabric portion is comprised of an elastic material and is configured to provide a degree of compression to the human body depending on a degree of stretch of the at least one fabric portion. The garment further includes a compression adjustment arrangement coupled to the at least one fabric portion. The compression adjustment arrangement includes a plurality of fluid pockets positioned on an inner side of the at least one fabric portion and a pump configured to pump fluid into the plurality of fluid pockets in order to stretch the at least one fabric portion.

In one aspect, there is provided a fabric containing gas therein, the fabric comprising a weave between warps and wefts, wherein each warp includes an elongate array of a plurality of individual gas cells, wherein neighboring gas cells are physically coupled to each other via a connection, wherein the connection is monolithic with the gas cells, and each cell contains the gas therein.

A wearable airbag device for protecting the hip of a wearer includes an airbag adapted to be worn around the pelvis and inflatable with an inflation gas. The airbag includes: an inner wall configured to face the wearer at airbag deployment; an outer wall opposite the inner wall and having a circumferential edge jointed with that of the inner wall so that the airbag has a substantially board shape when inflated; a contact portion disposed in an upper reach of a stream of inflation gas and configured to be deployed at a side of the pelvis; a protecting portion configured to be deployed in such a manner as to extend downward from the contact portion for covering an outer side of the trochanter of femur at airbag deployment; and a float-preventing means for preventing the protecting portion from floating away from the body of the wearer at airbag deployment.

An enveloping body for at least partly enveloping a limb, comprising an enclosed volume and a connection for supplying fluid to the volume and discharging it from the volume, wherein the enveloping body defines an inner circumference and an outer circumference, wherein the inner circumference of the enveloping body increases as the pressure of the volume increases.

Body protection padding with non-bursting gas cells preferably includes at least one base shell, an inside gas cell impact layer and an outside gas cell impact layer. The gas is preferably air, but could be any other suitable gas, such as pure nitrogen or argon. Body protection padding includes shoulder-chest pads, knee pads, hip pads, thigh pads and any other type of sports protective padding. The gas cells in the inside and outside gas cell impact layers do not burst upon impact. The at least one base shell is typically used in the body protection padding. Each gas cell layer includes a plurality of gas cells created between two plastic sheets. The inside and outside gas cell impact layers may be permanently or removably attached.

In one aspect, there is provided a fabric containing gas therein, the fabric comprising a weave between warps and wefts, wherein each warp includes an elongate array of a plurality of individual gas cells, wherein neighboring gas cells are physically coupled to each other via a connection, wherein the connection is monolithic with the gas cells, and each cell contains the gas therein.

A wrist protector includes a contact pad to be worn on a wrist of a user, a plurality of air tubes disposed on the contact pad, a pump configured to inject air from an outside into the plurality of air tubes, and a discharge valve configured to discharge the air stored in the plurality of air tubes to the outside.

An enveloping body for at least partly enveloping a limb, comprising an enclosed volume and a connection for supplying fluid to the volume and discharging it from the volume, wherein the enveloping body defines an inner circumference and an outer circumference, wherein the inner circumference of the enveloping body increases as the pressure of the volume increases.

For people with reduced physical ability such as elderly people, risks of bodily injuries are high. Once an injury occurs, a victim suffers, sometimes a victim even may not survive. To help such people, a device without adding much inconvenience in normal life is disclosed. The device is able to detect dangerous conditions and automatically deploy airbags when needed to prevent or mitigate potential bodily injuries.