39 results about "Mask ventilation" patented technology

An air delivery system includes an air flow generator to provide a pressurized flow of air, a patient interface to provide a seal with the patient's face in use, an air delivery conduit to interconnect the air flow generator and the patient interface, and a controllable vent valve to control venting from the patient interface. The vent valve is controlled to maintain a substantially constant air flow in the air delivery conduit and the air flow generator.

One embodiment of an oral airway comprised of two articulating parts which displace the tongue anteriorly and stent open the oropharynx. This device reversibly locks in a conformation which allows it to be used as a conduit for a fiberoptic scope or other airway device. An adjunct to airway management which can be used when mask ventilation or endotracheal intubation is indicated and can be removed easily after intubation without manipulation of the endotracheal tube. Other embodiments are described as shown.

The invention discloses a ventilation control device and a breathing mask device with the ventilation control device. The ventilation control device comprises a cavity with one or more gas conveying openings and mask ventilation openings for being communicated with a breathing mask, and valve assemblies arranged on the gas conveying openings. The valve assemblies are matched with the gas conveyingopenings to form gas inlets and gas outlets. The valve assemblies make the gas inlets communicated with the mask ventilating openings when the pressure in the cavity is smaller than or equal to the barometric pressure and make the gas outlets communicated with the mask ventilation openings when the pressure in the cavity is larger than the barometric pressure. The section area of the gas inlets is larger than the section area of the gas outlets. The gas outlets can keep the pressure in the cavity larger than the barometric pressure during breathing. By means of the ventilation control device,the breathing phase positive pressure function is realized, and the patient discomfort caused by continuous positive pressure is avoided; the ventilation control device does not need to be connectedwith a positive pressure gas supply device or a pipeline or the like in use, and therefore the patient can conveniently move; the positive pressure gas supply device does not need to be carried when the patient goes out.

A ventilation control apparatus, and a breathing mask device provided with the ventilation control apparatus. The ventilation control apparatus comprises: a cavity (210, 310, 410, 510, 610, 710), provided with air delivery ports (212A, 212B, 312A, 312B, 412, 512, 612, 712); a valve assembly (220, 230, 320, 420, 520, 620, 720), arranged at the air delivery ports (212A, 212B, 312A, 312B, 412, 512, 612, 712), the valve assembly (220, 230, 320, 420, 520, 620, 720) being configured to keep the pressure within the cavity (210, 310, 410, 510, 610, 710) greater than the atmospheric pressure during exhalation; a heat and moisture exchanger (240, 440, 540), a mask ventilation port (241, 411, 511) in communication with the air delivery ports (212A, 212B, 312A, 312B, 412, 512, 612, 712) being arranged on the heat and moisture exchanger (240, 440, 540) or the cavity (210, 310, 410, 510, 610, 710), the mask ventilation port (241, 411, 511) being used for ventilation with a breathing mask, the heat and moisture exchanger (240, 440, 540) being in communication with the air delivery ports (212A, 212B, 312A, 312B, 412, 512, 612, 712), so that both exhalation and inhalation occur via the heat and moisture exchanger (240, 440, 540). The ventilation control apparatus implements an exhalation phase positive pressure function, and prevents patient discomfort caused by continuous positive pressure. A positive pressure air supply apparatus and a pipeline etc. need not be connected during use, thereby facilitating patient movement, and the positive pressure air supply apparatus need not be carried when going out. In addition, the ventilation control apparatus is small in size, convenient to carry, and low in cost.

Provided is an effective technology which establishes high levels of both mask ventilation and mask collection characteristics for a mask fitted on the face of the wearer. A mask (1) is comprised of a mask body (10) which covers at least the mouth and the nose of the wearer, and a pair of ear fasteners (20) which extend out of both sides of the mask body (10) and catch onto the ears of the wearer. The mask body (10) includes a first fiber sheet and a second fiber sheet which are electret nonwoven sheets composed of a polypropylene fiber. The first fiber sheet is formed as a nonwoven sheet having an average fiber diameter of 0.5 to 3 mm and an areal weight of 1.5 to 5 g / m2. The second fiber sheet is formed as a nonwoven sheet with both an average fiber diameter and an areal weight greater than those of the first fiber sheet.

The invention discloses an active ventilation mask ventilation method and a mask ventilator, which comprises the following steps: (1) setting a mask; (2) setting a mask ventilator; (3) people put on a mask and turn on the mask through a rotary switch The strip opening of the ventilator is controlled by the single-chip controller to control the rotation of the driving motor; (4) when the human body exhales, the driving motor drives the fan blade to rotate, and the exhaust gas exhaled by the human body is discharged between the mask and the human body; (5) the human body breathes When the air is exhausted, the drive motor stops rotating or reduces the rotation speed, and the outside air enters through the filter material of the mask; (6) the active ventilation of the mask is realized. The invention also discloses a mask ventilator. The invention actively extracts the exhaust gas exhaled by the human body from the mask and the mouth and nose through the mask ventilator, which is beneficial to keep the air between the mask and the face dry and comfortable, and avoids the discomfort of breathing and wearing caused by humidity and sultry heat.