Implantable electrostimulator for improving blood flow

Apparatus for treating a subject who suffers from both peripheral artery occlusive disease and polyneuropathy, the apparatus comprising:

• an implant, comprising:
• an injectable housing,
• an electrode disposed on an outer surface of the housing, and
• circuitry, configured:
• (i) with a first mode in which the circuitry drives the electrode to apply a first electrical current having a frequency of 1-100 Hz,
• (ii) with a second mode in which the implant applies a second electrical current having a frequency of 1-10 kHz, and
• (iii) to alternate the implant between the first mode and the second mode;
• and
• an introducer:
• comprising a tube defining a lumen, the tube being percutaneously-advanceable into tissue of the subject, and the lumen dimensioned to at least temporarily house the implant, and
• configured to deploy the implant from a distal end of the lumen by moving the implant and the distal end of the lumen relative to each other.