Patent ID: 8718791

Claim:
Apparatus for application to a nerve of a subject, comprising an electrode cuff, which comprises: a housing, configured to be placed at least partially around the nerve so as to define an inner surface of the housing that faces the nerve; a plurality of insulating elements coupled to the inner surface of the housing at respective insulating element longitudinal positions along the housing, such that the inner surface of the housing and pairs of the insulating elements define one or more respective cavities at respective cavity longitudinal positions along the housing; and one or more electrodes, fixed to the housing in fewer than all of the cavities, such that at least one of the cavities is an empty cavity that does not have an electrode positioned therein, wherein the housing has a length of between 10 mm and 14 mm, an outer radius of between 4 mm and 8 mm, an inner radius of between 3 mm and 6 mm, wherein the insulating elements have an outer radius of between 3 mm and 6 mm, and an inner radius of between 2 mm and 3.5 mm, and wherein the plurality of insulating elements comprises exactly seven insulating elements, respective edges of which are positioned within the housing at the following respective distances from one end of the housing: 0.0 mm, between 1.3 and 1.7 mm, between 2.7 and 3.3 mm, between 5.1 and 6.3 mm, between 7.1 and 8.7 mm, between 8.5 and 10.3 mm, and between 10.2 and 12.4 mm, and the insulating elements having the following respective widths: between 0.7 and 0.9 mm, between 0.7 and 0.9 mm, between 1.4 and 1.8 mm, between 0.7 and 0.9 mm, between 0.7 and 0.9 mm, between 1.1 and 1.3 mm, and between 0.7 and 0.9 mm.