Infusion pump
First Claim
1. An infusion pump comprising a housing, a reservoir which is received in the housing and can be filled with a fluid and has a piercing mandrel and outlet, a catheter, a battery-driven delivery device which is arranged between reservoir and catheter and whose delivery rate can be adjusted via an electronic control unit, characterized in that the delivery device (23) is designed to operate according to the piezoelectric principle.
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Accused Products
Abstract
Known variable flow pumps (VF pumps) are characterized by significant inaccuracies in the delivery quantities. In addition, they cause cosmetic problems in the carrier after implantation as a result of their external configuration. The invention provides an implantable VF pump, which resolves the disadvantages. To achieve this, the battery-driven delivery device is configured according to piezoelectric principles and the external surface of the upper pump housing shell is provided with expansion joints.
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Citations
13 Claims
- 1. An infusion pump comprising a housing, a reservoir which is received in the housing and can be filled with a fluid and has a piercing mandrel and outlet, a catheter, a battery-driven delivery device which is arranged between reservoir and catheter and whose delivery rate can be adjusted via an electronic control unit, characterized in that the delivery device (23) is designed to operate according to the piezoelectric principle.
Specification