US 6,893,415 B2Granted

Medication delivery device

AssigneeNovo Nordisk A/S

InventorsMads Koerstz Madsen, Jens Munk

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Abstract

A medication delivery device comprising a system that is able to sense if the delivery device is in actual physical contact with a human being or if the delivery device has been abandoned. The system comprises an electronic control and a touch sensitive switch preferably formed as a part of the housing of the medication delivery device. The housing can be divided into two parts each constituting separate electrical conductors being spaced apart from each other by an insulating material. When the two parts a temporarily bridged e.g. by the skin of a human being a direct current path between the parts are created, which can provide an electrical signal at the electronic control. When a dose has been set, absence of the signal will cause the electronic control to cancel the set dose and to sound an alarm.

Claims4

Dependent claims

A medication delivery device comprising:

a. housing for accommodating a cartridge of a medicament, which has a moveable piston sealing one end of the cartridge and which is capable of being coupled to an injection needle so that medicament in the cartridge can be pressed out through the needle when the piston is moved in a first direction;
b. a piston rod for driving the piston in the cartridge to expel medication from the cartridge;
c. a electric drive coupled to the piston rod;
d. an electronic control unit communicating into which the size of a desired dose can be inputted by a user;
wherein the electronic control unit communicates with the electric drive to drive the piston rod;
e. a touch sensor sensitive to the touch of a human being, the sensor comprising two parts, each constituting separate electrical conductors spaced apart from one another, such that when the two parts are temporarily bridged by the skin of a human being a direct current path between the two parts is established, and
f. wherein the touch sensor is in communication with the control unit so that the control unit receives a signal when the sensor is in contact with human skin.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 09/960,245Filed 21 Sep 2001 · us provisional application
Priority: DK 2000 0140622 Sep 2000
Published: US 2002/0133113 A119 Sep 2002
Granted: 17 May 2005
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

A61M 5/14566
Pressurised by means of pistons: with a replaceable reservoir for receiving a piston rod of the pump
A61M 5/20
Syringes: automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
A61M 2005/2073
Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically: preventing premature…
A61M 2205/13
General characteristics of the apparatus: with means for the detection of operative contact with patient, e.g. lip sensor