Abstract: An injection device includes a dispensing chamber, a plunger, a controller, a temperature control device, and a memory device. The dispensing chamber has an inner surface and an outer surface. The inner surface defines a cavity for receiving a quantity of a substance. The plunger is engaged with the inner surface of the dispensing chamber, is capable of sliding in the cavity of the dispensing chamber, and is fluidly sealed to the inner surface of the dispensing chamber. The controller controls the operation of the injection device. The temperature control device at least partially surrounds the dispensing chamber. The memory device has a parameter stored on it. The controller uses the parameter from the memory device to operate the injection device.

Abstract: The present invention is a universal limited reuse assembly for an ophthalmic hand piece having a power source for providing power to a tip segment, a controller for controlling the operation of the tip segment, a motor with a shaft, a mechanical linkage interface located on an end of the shaft, an interface for connecting the limited reuse assembly to the tip segment, and a housing at least partially enclosing the power source, the controller, and the motor. The limited reuse assembly is connectable to and removable from two or more types of tip segments. Each of the two or more types of tip segments is configured to perform a different procedure.

Abstract: An ophthalmic injection system has a tip segment attachable to and removable from a limited reuse assembly. The tip segment has a dispensing chamber housing, a plunger, a needle, a temperature control device, a thermal sensor, and a first housing at least partially enclosing the dispensing chamber housing, the temperature control device and the plunger. The limited reuse assembly has an actuator with a shaft, a power source for providing power to the actuator, a controller for controlling the actuator, a mechanical linkage interface, and a second housing at least partially enclosing the power source, the controller, and the actuator. The mechanical linkage interface is coupled to the actuator shaft and has a mating surface on one end. The substance is injected after the temperature of the substance is altered.

Abstract: A disposable injection device includes a dispensing chamber, a plunger, a fuse in series with a light, and a housing. The dispensing chamber has an inner surface and an outer surface. The inner surface defines a cavity for receiving a quantity of a substance. The plunger is engaged with the inner surface of the dispensing chamber, is capable of sliding in the cavity of the dispensing chamber, and is fluidly sealed to the inner surface of the dispensing chamber. The housing at least partially encloses the dispensing chamber and the plunger. After the substance has been delivered from the dispensing chamber, the fuse is blown causing the light to go out and disabling the device.

Abstract: An ophthalmic injection device has a dispensing chamber housing, a plunger, an actuator for driving the plunger, a temperature control device, and a temperature release mechanism. The dispensing chamber housing has an inner surface and an outer surface. The inner surface partially defines a dispensing chamber for holding a quantity of a substance. The plunger is engaged with the inner surface of the dispensing chamber housing, is capable of sliding in the dispensing chamber housing, and is fluidly sealed to the inner surface of the dispensing chamber housing. The temperature control device at least partially surrounds the dispensing chamber housing and is capable of altering the temperature of the substance in the dispensing chamber. The temperature release mechanism is in a locked position when the substance is outside the proper temperature range and an unlocked position when the substance is in the proper temperature range.

Abstract: A disposable drug delivery device has a dispensing needle, a plunger, a spring, a shaft, and a lock mechanism. The plunger is engaged with the inner surface of the dispensing needle, is capable of sliding in the cavity of the dispensing needle, and is fluidly sealed to the inner surface of the dispensing needle. The spring is connected to the plunger via a shaft. The lock mechanism holds the shaft in a first position such that the spring is in a compressed state. When the lock mechanism releases the shaft, the spring extends providing a force that moves the shaft and connected plunger in a direction toward the tapered end of the dispensing needle thereby expelling the drug from the dispensing needle into an eye. The spring also provides a retaining force so that the plunger is retained in an extended position against the tapered end of the dispensing needle.

Abstract: A method of injecting a substance into an eye is disclosed. A connection between a disposable tip segment and a limited reuse assembly is recognized. A temperature control device is activated to alter the temperature of a substance contained in a dispensing chamber. Dosage information is read. In response to the dosage information, a mechanical linkage interface is advanced to advance a plunger to expel the substance from the dispensing chamber. The mechanical linkage interface is retracted without substantially retracting the plunger to prevent reflux of the substance. Reuse of the disposable tip segment is prevented. The removal of the disposable tip segment from the limited reuse assembly is recognized.

Abstract: An injection device assembly includes a dispensing chamber housing and a plunger. The dispensing chamber housing is coupled to a needle. The dispensing chamber housing has an inner surface and an outer surface. The inner surface partially defines a dispensing chamber for holding a quantity of a substance. A dosage of a substance is cast into the dispensing chamber housing or cast onto a plunger that is inserted into the dispensing chamber housing.

Abstract: An ophthalmic injection device has a dispensing chamber, a storage chamber, a piezoelectric array, a needle fluidly coupled to the dispensing chamber, a power source for providing power to the piezoelectric array, and a controller for controlling the power source. A dispensing chamber housing has an inner surface and an outer surface. The inner surface defines a dispensing chamber for receiving a quantity of a substance. The storage chamber is located near the dispensing chamber housing. The piezoelectric array is located between the storage chamber and the dispensing chamber housing. A housing at least partially encloses the dispensing chamber housing, the storage chamber, the piezoelectric array, the power source, and the controller. The piezoelectric array is activated to pump the substance from the storage chamber to the dispensing chamber.

Abstract: An ophthalmic injection device has a dispensing chamber housing, a needle fluidly coupled to a dispensing chamber, a power source for providing current to the dispensing chamber housing, a controller for controlling the power source, and a housing at least partially enclosing the dispensing chamber housing, the power source, and the controller. The dispensing chamber housing is made of a shape memory alloy and has an inner surface defining a dispensing chamber for receiving a quantity of a substance. The controller directs a first current to the dispensing chamber housing to heat the substance contained in the dispensing chamber and a second current to the dispensing chamber housing to alter the shape of the dispensing chamber housing to deliver the substance.

Abstract: An injection device includes a dispensing chamber, a plunger, a controller, a memory device resistant to sterilization, and a housing at least partially enclosing the dispensing chamber and the plunger. The dispensing chamber has an inner surface and an outer surface. The inner surface defines a cavity for receiving a quantity of a substance. The plunger is engaged with the inner surface of the dispensing chamber, is capable of sliding in the cavity of the dispensing chamber, and is fluidly sealed to the inner surface of the dispensing chamber. The controller controls the operation of the injection device. The controller reads dosage data from the memory device and operates the injection device to deliver a dosage corresponding to the dosage data.

Abstract: An ophthalmic injection system has a tip segment attachable to and removable from limited reuse assembly. The tip segment includes a flexible chamber for receiving a quantity of a substance, a piezoelectric array located near the flexible chamber, a needle fluidly coupled to the flexible chamber, and a first housing at least partially enclosing the flexible chamber and the piezoelectric array. The limited reuse assembly includes a power source for providing power to the piezoelectric array, a controller for controlling the power source, and a second housing at least partially enclosing the power source and the controller. The piezoelectric array is activated to compress the flexible chamber and dispense the substance from the flexible chamber.

Abstract: A limited reuse assembly for an ophthalmic medical device has an actuator with a shaft, a power source for providing power to the actuator, a controller for controlling the actuator, a mechanical linkage interface, and a housing. The mechanical linkage interface is coupled to the actuator shaft and has a mating surface on one end. The housing at least partially encloses the power source, the controller, and the actuator. The limited reuse assembly is attachable to and removable from a disposable injection device.

Abstract: An ophthalmic injection device has a dispensing chamber housing, a plunger, a needle fluidly coupled to a dispensing chamber, a temperature control device, a power source for providing power to the temperature control device, a controller for controlling the temperature control device, and a mechanical linkage mechanism. The interior surface of the dispensing chamber housing partially defines a dispensing chamber for holding a quantity of a substance. The plunger is engaged with the inner surface of the dispensing chamber housing, is capable of sliding in the dispensing chamber housing, and is fluidly sealed to the inner surface of the dispensing chamber housing. A plunger shaft is coupled to the plunger. The temperature control device can alter the temperature of the substance contained therein. The mechanical linkage mechanism has at least two pivots and at least two shafts and transfers force from a lever to the plunger.