Electrochemical pump and delivery device
AssigneeMicroMED Co., Ltd.
InventorsPo-Ying LI, Tsung-Chieh CHENG, Jiunn-Ru LAI
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Abstract
An electrochemical pump adopts a hybrid pulse to intermittently activate an electrochemical reaction. The abovementioned electrochemical pump can save power effectively to prolong the lifetime of the electrochemical pump. In addition, an electrochemical pump increases the bonding strength between electrodes and a substrate by covering edges of the electrodes with an insulating layer to avoid electrode delamination caused by high-power electrochemical reactions. A delivery device using the abovementioned electrochemical pump is also disclosed.
Claims28
An electrochemical pump comprising:
- a substrate having an electrode region;
- a plurality of electrodes disposed in the electrode region;
- a dam encircling the electrode region to define a containing space, wherein the containing space stores an electrochemical liquid;
- and
- a control circuit electrically connected with the electrodes and using a pulse signal to selectively enable an electrochemical reaction on surfaces of the electrodes, wherein an enabling pulse of the pulse signal includes a plurality of sub-enabling pulses.
A delivery device comprising:
- an electrochemical pump comprising:
- a substrate having an electrode region;
- a plurality of electrodes disposed in the electrode region;
- a dam encircling the electrode region to define a containing space, wherein the containing space stores an electrochemical liquid;
- and
- a control circuit electrically connected with the electrodes and using a pulse signal to selectively enable an electrochemical reaction on surfaces of the electrodes, wherein an enabling pulse of the pulse signal includes a plurality of sub-enabling pulses;
- a container including a sealing element and a piston, wherein a liquid, which is to be delivered, is stored between the sealing element and the piston, and wherein the container is connected with the electrochemical pump to define an airtight room between the piston and the containing space of the electrochemical pump;
- and
- a delivery connector including:
- a tube;
- a puncture element connected with one end of the tube and used to puncture the sealing element of the container to make the container interconnect with exterior through the puncture element;
- and
- a delivery element connected with another end of the tube and to be disposed on an object, wherein the piston pushes the liquid to deliver the liquid to the object through the puncture element, the tube and the delivery element.
An electrochemical pump comprising:
- a substrate having an electrode region;
- a plurality of electrodes disposed in the electrode region;
- an insulating layer covering edges of the electrodes, wherein a portion of the electrodes is exposed;
- a dam encircling the electrode region to define a containing space, wherein the containing space stores an electrochemical liquid;
- and
- a control circuit electrically connected with the electrodes and selectively enabling an electrochemical reaction on surfaces of the electrodes.
Dependencies are inferred from the claim text.