30results about How to "Maintain air pressure" patented technology

A patient support system for an operating room table is provided. At least a portion of the patient support system components form a no-air-loss patient support surface. At least one fluid pump can supply air pressure to a plurality of no-air-loss air cells, and at least one pressure release valve can release air pressure from the no-air-loss air cells. A computer can compare air pressure within the air cells to a desired air pressure set point and can modulate the air pressure by actuating the at least one fluid pump and / or the at least one pressure release valve to bring the air pressure within the air cells to a desired air pressure. After the initial air pressure adjustments are made and the desired air pressure is achieved, no further adjustments during the operation are able to be made by the computer so that the patient positioned thereon the patient support system will not be moved by the patient support system during an operation.

The invention comprises a tire pressure monitoring system. One system comprises a tire pressure monitor that signals to a user with audio alarm and visual alarm. Another component is the use of a tire air pressure balancing device with a safety trigger to ensure that dual tire systems share air but that stop sharing air in the case of rapid air pressure drop as in cases of tire blow out.

The invention provides a combined-type distributing valve group which is particularly suitable for an air bag type inflation and deflation system applied in an automobile chair for improving the comfort performance. The distributing valve group comprises a control air valve and at least two inflation and deflation valves capable of inflating or deflating different air bags. A control air valve is provided with a normally-closed first distribution flow channel which is communicated with one inflation and deflation valve and is provided with a normally-opened second distribution flow channel which is communicated with the other inflation and deflation valve. The two inflation and deflation valves are each provided with a check valve, a normally-opened inflation pipe and a normally-closed deflation opening. Thus, when air enters an air pump, one air bag set can be directly inflated or the other air bag set is inflated through switching of the control air valve and the air pressure in air bags is maintained through the check valves when air is prevented from entering the air pump. When any inflation and deflation valve acts, the air bag corresponding to the inflation and deflation valve is deflated, and therefore the amount of valve bodies and control procedures can be greatly reduced.

The invention discloses an outdoor liquid storage tank. The outdoor liquid storage tank is characterized in that a nitrogen pipeline 2 is arranged on the side surface of the upper portion of a tank body in a communicating mode, a nitrogen sealing valve is arranged on the nitrogen pipeline 2 and is connected to an outlet of a nitrogen tank through a pressure reducing valve, the top of the tank bodyis provided with a ventilation elbow, a one-way exhalation valve is arranged at the ventilation elbow, an oil inlet is connected with an oil pipe penetrating through a nitrogen sealing layer, the lower end of a manual oil pouring opening is connected to an oil liquid isolation area, the oil liquid isolation area penetrates through the nitrogen sealing layer to communicate to the bottom of the tank body, a liquid pressure release valve is arranged on the side wall of the bottom of the oil liquid isolation area 6, the upper portion of the oil liquid isolation area is provided with a one-way airvalve communicating with the nitrogen sealing layer, the manual oil pouring opening is covered by a sealing cover with the one-way air valve, an oil outlet is formed in the side face of the lower portion of the tank body, and a stop valve is arranged at the end portion of the oil outlet. According to the outdoor liquid storage tank, leakage can be prevented, a liquid can be cooled, normal air pressure in the tank body can be maintained, and the safety of the outdoor liquid storage tank is greatly improved.

The invention discloses a mixed hemostatic structure. The structure consists of an external application film of hemostatic materials and a mixed self-adaptive structure. The self-adaptive structure consists of an air bag, an air inflation device and a horizontal self-adaptive scissor-like hinge deployable structure. The self-adaptive horizontal scissor-like hinge deployable structure consists of ascissor-like hinge structural unit and a perforation line, and the scissor-like hinge structural unit is connected into a whole by the perforation line. The scissor-like hinge structural unit consists of a scissor-like hinge unit and an elastic element, wherein the scissor-like hinge unit is formed by hinging four rods end to end in sequence. When in use, the mixed hemostatic structure istis injected into the wound, the inflation device is opened and the air bag is inflated to expand so that the external application film of hemostatic materials is driven to contact with the wound surface, theelastic element releases elastic potential energy to drive the scissor-like hinge structural unit to expand along the radial direction to provide support for the air bag. When the pressure meets thehemostatic condition of the wound compression hemostasis, the air inflation is stopped, so that the hemostasis function is achieved.

The invention discloses a foldable mixed hemostatic structure and a hemostatic device, wherein the hemostatic structure consists of an externally film of a hemostatic material and a mixed self-adaptive structure; the mixed adaptive structure consists of an air bag, an inflation device and adaptive scissor hinge deployment structures; the external film of the hemostatic material is pasted and fixedon the outer side of the air bag; the inflation device is connected to the upper end of the air bag and can charge or withdraw air into the air bag; the adaptive scissor hinge deployment structures consist of scissor hinge structural units and supporting rods; the scissor hinge structure units consist of scissor hinge units and elastic components; the supporting rods consist of supporting rod scissor hinge units and supporting rod elastic components. When in use, the hemostatic structure is injected into the wound, the supporting rods expand along the axial direction, the inflation device isopened to inflate the air bag to inflate the air bag to drive the external film of the hemostatic material to contact with the wound surface, the scissor hinge structure units expand along the radialdirection to provide support for the air bag, and inflation is stopped when the pressure meets the hemostatic condition of the wound pressing, so that the hemostatic function is realized.

The invention discloses an elastic plate and air bag combined hemostasis structure and a hemostasis device. The hemostasis structure is composed of a hemostasis structure material external applicationfilm and a combined self-adaption structure. The combined self-adaption structure is composed of an air bag, an inflation device and a self-adaption elastic plate spreading structure. The two ends ofthe air bag are connected with the inflation device and a support rod respectively. The inflation device can detect the air pressure inside the air bag. The self-adaption elastic plate spreading structure is composed of self-adaption elastic plate spreading structure basic units. The self-adaption elastic plate spreading structure basic units are composed of elastic plates and support rod units.The support rod units are composed of support rod shear-type hinge units and support rod elastic elements. Before usage, the combined hemostasis structure is stored in an injector; when in use, the hemostasis structure is injected into a wound, support rods axially spread, the inflation device is opened to inflate the air bag to make the air bag expand, the elastic plates radially spread along with the air bag, the hemostasis structure material external application film is driven to be attached to the surface of the wound, and then a rapid hemostasis function is achieved.