Abstract: Masks for various uses and methods for manufacture thereof, including masks for use in continuous positive air pressure (CPAP) therapies. An example includes a mask having a first, relatively softer material for contact with the face of the user, and a second, relatively harder or more structural material used away from the face of the user, with a gradient therebetween. The mask can be produced by additive manufacturing to avoid a discernible boundary between the first and second materials.

Abstract: Masks for various uses and methods for manufacture thereof, including masks for use in continuous positive air pressure (CPAP) therapies. An example includes a mask having a first, relatively softer material for contact with the face of the user, and a second, relatively harder or more structural material used away from the face of the user, with a gradient therebetween. The mask can be produced by additive manufacturing to avoid a discernible boundary between the first and second materials. The mask may include a foam element, which can be removable for replacement in some examples, for contacting the patient's skin.

Abstract: A collar for prevention of sleep apnea is disclosed. An illustrative collar includes upper and lower portions to provide a comfortable and generally air-sealed interface to the upper neck and jaw, and lower neck and chest, respectively, of the patient. In between, an intermediate section defines a chamber over the anterior neck to which negative pressure is applied, drawing tissue forward and away from the patient's airway, improving air flow for the patient and preventing sleep apnea.

Abstract: Masks for various uses and methods for manufacture thereof, including masks for use in continuous positive air pressure (CPAP) therapies. An example includes a mask having a first, relatively softer material for contact with the face of the user, and a second, relatively harder or more structural material used away from the face of the user, with a gradient therebetween. The mask can be produced by additive manufacturing to avoid a discernible boundary between the first and second materials.