Abstract: An intravenous cannula device (10) having a cannula body (12), a needle carrier (20), and a needle carrier container (36) nested in series. The needle carrier is spring loaded (48) toward the container, and the container carries an external lever assembly (50) that triggers the spring as the cannula is pushed forward of the container toward full insertion in the patient, whereby the released spring drives the needle carrier including needle (30) into the container.

Abstract: A disposable safety scalpel comprises a handle and a blade carrier, which fit together such that the blade carrier can shift between a retracted position whereby a front portion of the handle covers or otherwise blocks contact with the sharp edge of the blade, and an extended position whereby the sharp edge of the blade protrudes beyond the handle. The handle has a substantially flat base portion that can be held by the forefinger of the surgeon for shifting of the carrier with the thumb between retracted and extended positions. When the carrier and blade are extended, the surgeon can hold only the base of the handle between the thumb and forefinger for cutting during surgery. The shifting between the retracted and deployed positions with only the fingers of one hand can be readily accomplished even in the presence of slippery fluids during surgery.

Abstract: A safety biopsy instrument having a body, a tubular blade with a sharp edge and a protection member engaged with the body such that the protection member and/or body are axially displaceable relative to each other from a position with the protection member concealing the blade edge to a position with the blade edge exposed, and then to a position with the blade edge concealed and the protection member and blade edge axially locked relative to each other. Also, a safety biopsy instrument with a handle, body and removable blade cartridge with a distal opening, a tubular blade having a sharp edge, and a resistance member disposed between a front shoulder and rear wall to bias the blade edge away from the distal opening. Forward movement of the body relative to the handle causes the resistance member to compress between the rear wall and front shoulder and the blade edge to travel distally.

Abstract: A disposable safety scalpel comprises a handle and a blade carrier, which fit together such that the blade carrier can shift between a retracted position whereby a front portion of the handle covers or otherwise blocks contact with the sharp edge of the blade, and an extended position whereby the sharp edge of the blade protrudes beyond the handle. The handle has a substantially flat base portion that can be held by the forefinger of the surgeon for shifting of the carrier with the thumb between retracted and extended positions. When the carrier and blade are extended, the surgeon can hold only the base of the handle between the thumb and forefinger for cutting during surgery. The shifting between the retracted and deployed positions with only the fingers of one hand can be readily accomplished even in the presence of slippery fluids during surgery.

Abstract: A disposable guarded surgical scalpel includes a handle with a blade fixed to it and a slidably mounted guard. The guard can be moved using a single hand. When the scalpel is in use the guard is moved to a retracted position where the blade is exposed; the guard locks in this position to prevent any unintentional movement. When the scalpel is not in use, the guard is moved to an extended position where the blade is covered. When the scalpel has been used on a patient the guard is moved to a disposal position beyond the extended position thus exposing a visual indicia on the handle that indicates that the scalpel should not be reused. The guard also has grooves on the outer surface so as to provide better grip to a surgeon during operation.

Abstract: A disposable guarded surgical scalpel includes a handle with a blade fixed to it and a slidably mounted guard. The guard can be moved using a single hand. When the scalpel is in use the guard is moved to a retracted position where the blade is exposed; the guard locks in this position to prevent any unintentional movement. When the scalpel is not in use, the guard is moved to an extended position where the blade is covered. When the scalpel has been used on a patient the guard is moved to a disposal position beyond the extended position thus exposing a visual indicia on the handle that indicates that the scalpel should not be reused. The guard also has grooves on the outer surface so as to provide better grip to a surgeon during operation.