The present invention discloses a speaker device capable of restraining polarization, a method for adjusting a diaphragm balance position of the speaker device and a method for adjusting diaphragm compliance performance of the speaker device. The speaker device comprises a vibration system, a magnetic circuit system, a shell accommodating the vibration system and the magnetic circuit system, a first electret layer, a second electret layer and a third electret layer, wherein the first electret layer, the second electret layer and the third electret layer have the same electric charge polarity; the first electret layer is attached to the vibration system; the second electret layer is attached to a first fixing component above the vibration system and opposite to the first electret layer; the third electret layer is attached to a second fixing component below the vibration system and opposite to the first electret layer; and the first electret layer, the second electret layer and the third electret layer are parallel to one another. In the present invention, an electrostatic field force is adopted to restrain the polarization of a diaphragm in a vibration direction.

The present invention relates to a device for the treatment of blood comprising a solid phase on which a polypeptide is immobilized which is suitable for the inactivation of free nucleic acids. Suitable polypeptides are, for example, deoxyribonucleases, ribonucleases, DNA methyltransferases or cytosine deaminases. The invention further comprises the use of such devices for the treatment of patients suffering from chronic kidney failure, cancer or lupus erythematosus, as well as methods and systems for the treatment of blood, wherein free nucleic acids are inactivated outside the body.

A nebuliser cup for maintaining a safe level of liquid during nebulization, the cup comprising a liquid level sensor comprising: a first element sensing liquid at or below a position corresponding to a filled liquid level in the nebuliser cup; a second element electrically isolated from the first element and located at a position corresponding to a filled liquid level in the nebuliser cup; and wherein when the cup is not filled with a liquid to the filled liquid level, the first element, the liquid and the second element do not form an electrically coupled circuit; and when the cup is filled with a liquid to the filled to liquid level, the first element, the liquid and the second element together form an electrically coupled circuit.

A device for killing blood-borne pathogens, and a method of using the device to effectively remove the blood-borne pathogens from a body of a human or an animal is claimed. The device comprises a wire that is inserted into a bloodstream of a patient, which releases metallic ions which effectively kill the pathogens. There are several embodiments, each of which has a combination of covered and uncovered portions of the wire. The wire is electrically connected to both a source of power and a power supply with printed circuit board or controller/software, which controls the intensity and duration of the treatment.

The disclosure provides methods of making a cell-containing product having a uniform amount of cells therein. The method comprises pooling red blood cells from a plurality of blood units, and inactivating any pathogen contained therein. A storage solution added to the cellular component results in a cell-containing product that is essentially pathogen and white blood cell free and has an extended shelf life of about 42 to about 100 days. The cell-containing product is further divided into units which comprise a uniform dose of RBCs per unit.

The present invention provides a method to treat sinusitis, a method for improved medication delivery to the sinus mucosa, and a method for staunching bleeding of the sinus mucosa comprising of comprising compressing sinus mucosa of a sinus of a patient against bone tissue of the sinus to a predetermined level without damaging the bone tissue. The present invention further provides a method to treat nasal polyposis comprising compressing nasal polyps contained within the nasal cavity against its lining to reduce volume of the nasal polyps. The present invention provides a method to treat chronic urethral syndrome comprising compressing interior surfaces of an urethra in order to stimulate and cause excretion out of urethral mucosa located along length of the urethra. The present invention further provides additional methods relating to drug delivery and visualization.

A patient mask including a body shaped to be placed over a face of a patient and configured to prevent the passage of viruses and/or particles therethrough and at least one port configured to receive an endoscope, a surgical instrument, or both and to conform to the shape of the surgical instrument such that the port prevents the passage of viruses and/or particles therethrough.

A clear, soft and malleable plastic constructed face mask is provided that has an elastic strap that is used to secure the mask onto a patient's face. The mask comprises of a malleable aluminium strip on the top for easy molding of the mask around the patient's nose; a front opening covered with a paper filter; and two side openings covered with a paper filter. The mask provides supplemental oxygen through connection to a Y-shaped respiratory/ventilator circuit or standard oxygen tubing. The mask also allows the patient to breathe comfortably without a supplemental oxygen source. It has ribbed tubing for gas sampling. The mask allows a health care employee to visualize breathing on the clear plastic material. The mask provides filtration of aerosolized contaminants.

The disclosure provides methods of making a cell-containing product having a uniform amount of cells therein. The method comprises pooling red blood cells from a plurality of blood units, and inactivating any pathogen contained therein. A storage solution added to the cellular component results in a cell-containing product that is essentially pathogen and white blood cell free and has an extended shelf life of about 42 to about 100 days. The cell-containing product is further divided into units which comprise a uniform dose of RBCs per unit.

A devise for retracting or opening a tissue wound employs two retractor arms that do not enter or penetrate into the wound. The retractor arms engage the tissue on either side of the wound and apply outward pressure on the tissue surface to open the wound.