The present disclosure is directed to embodiments of a needle safety sheath, guard, or device that is compatible and removably mountable to syringes (e.g., aspirating syringes for use within the dental industry) to which needles may be mounted. In at least one embodiment, the needle safety sheath, guard, or device includes one or more slots and one or more cutouts along a cylindrical safety sheath of the needle safety sheath, guard, or device along which the cylindrical safety sheath may slide from a retracted position (e.g., non-deployed state) to an extended position (e.g., deployed state) and vice versa. One or more flexible members may be along the cylindrical safety sheath that allow a medical practitioner to remove the needle from the syringe without the medical practitioner having to be exposed to a tip of the commercially available needle.

The invention features a pharmaceutical suspension containing drug particles, a drug delivery device anchored in the mouth for continuously administering the pharmaceutical suspension, and methods of their use.

This invention relates to a device for whitening teeth, including both a tank (16) for at least part of the whitening product in solid or semi-solid form, and a tank (17) of a product in liquid form and means designed to mix the products in powder form and in liquid form before they come out of a nozzle (14), the device also includes a duct (18) leading to the nozzle (14) and operatively connected to a pressurized energy source (219) from which, on command, a flow of gas extends; operatively connected in an intermediate position of a first stretch (18A) of the duct (18) there being the tank (16) of at least part of the whitening product; operatively connected in an intermediate position of a second stretch (18B) of the duct (18) there being the tank (17) of product in liquid form.

The invention features a pharmaceutical suspension containing drug particles, a drug delivery device anchored in the mouth for continuously administering the pharmaceutical suspension, and methods of their use.

The saliva management system is a device that can be worn at night while sleeping to help alleviate dry mouth syndrome. The device utilizes a wind-up timer to periodically release a burst of water mist directly into the mouth, under the tongue. The water comes from a reservoir located within the housing of the saliva management system. The device comprises teeth clips and a strap to hold it in place. A built-in, finger-operated pump pressurizes the water to force it out of the reservoir via misting nozzles. A valve release is included to allow easier draining and cleaning of the device.

The present invention provides dental amalgam recycling systems, useful for recycling particles from a dental liquid effluent drawn, for example, from a suctioning device.

A dental suction tip that can be connected through a hose to a low pressure or vacuum source will entrain material in a patient's mouth. A flap valve is formed by incisions in the hollow tube forming the suction tip. The flap valve is located between opposite ends of the dental suction tip so that the flap valve remains aligned with the tube walls so as not to restrict entraining flow in the suction tip. The dental suction tip can be reoriented with the tube extending between the patient's lips so that the patient can exert pressure to force valve flaps inwardly to open the valve to permit the patient to spit into the dental suction tip. The flap valve is spaced from the open end of the suction tip by a distance sufficient to prevent simultaneous blockage of both openings to avoid stalling or suck back or fluid migration and resulting adverse effects on patient health without compromising evacuating flow.

The present invention discloses a negative-pressure oral apparatus capable of relieving discomfort of soft tissues in the oral cavity and improving fixation of the oral apparatus to prevent the oral apparatus from falling off due to mouth opening. The oral apparatus is compact and elastic so that it fits various shapes and sizes of the oral cavity and is easy to be put on and taken off to provide convenience and safety to the user. In another embodiment, a method for maintaining a negative oral pressure and collecting liquid by coupling the oral apparatus to a liquid collecting apparatus capable of effectively providing the oral cavity with a negative pressure to expel liquid in the oral apparatus and deliver the liquid to an absorbing element in the liquid collecting apparatus so as to prevent liquid leakage or contamination.

A positive exhalation pressure device increases the pressure gradient in the airways, thereby increasing oxygen saturation levels and decreasing the severity of hypoxia. Various embodiments of the device may be inserted into the nasal and/or oral cavities, or configured as mask devices covering the nasal and/or oral cavities. In some embodiments, the resistance of the device may be varied.

Systems, devices, and methods are disclosed for maintaining oral hydration. A device may include a perforated tube, covered by an outer cover made of an absorbent material. The tube may be shaped such that it allows a patient using the device to open and close his or her jaw, without displacement and also to allow other medical devices to be used on the patient simultaneously.