초록 ▼

A multi-use pen-shaped medication dispensing device made of a plastic material that is recyclable after the contents of the medication cartridge have been exhausted. The device is made of a minimal number of parts, which include a housing, a dial assembly, a generally cylindrical button assembly loc

A multi-use pen-shaped medication dispensing device made of a plastic material that is recyclable after the contents of the medication cartridge have been exhausted. The device is made of a minimal number of parts, which include a housing, a dial assembly, a generally cylindrical button assembly located within the proximal end of the dial assembly, an internally threaded nut, and an externally threaded leadscrew. The device is arranged so that the dial must be rotated to the zero dose position prior to setting a dose. The device includes a lockout mechanism that prevents the dial from being depressed during dosing. The device further includes a mechanism that limits the maximum dosage that can be dialed up and a mechanism that prevents the user from dialing up a dosage greater than that remaining in the cartridge.

대표청구항 ▼

[ What is claimed is:] [1.] A method of delivering a selected dosage of injectable product wherein a container of the injectable product is positioned in a housing of a medication dispensing device, the container having an exit at a first end and a movable piston sealing the container opposite the f

[ What is claimed is:] [1.] A method of delivering a selected dosage of injectable product wherein a container of the injectable product is positioned in a housing of a medication dispensing device, the container having an exit at a first end and a movable piston sealing the container opposite the first end, the container being positioned in the housing whereby a drive stem of the medication dispensing device is engaged with the piston, the medication dispensing device further including a dial assembly operably engageable with the drive stem and a knob operably engageable with the dial assembly, the method comprising the steps of:preventing axial displacement of the knob and dial assembly when the knob and dial assembly are in an initial axial position and not in a predetermined zero setting rotational position;rotating the knob to the predetermined zero setting rotational position while retaining the knob in said initial axial position;then axially retracting the knob and dial assembly from the initial axial position without rotation while the knob is in the predetermined zero setting rotational position;then rotating the knob to set a desired dosage of injectable product to be delivered;maintaining the drive stem in contact with the piston during the steps of axially retracting the knob and dial assembly and rotating the knob to set a desired dosage; andmanually depressing the knob to force the set dosage of injectable product to be delivered out of the exit of the container.