Ocular implant with pressure sensor and delivery system

Abstract

An ocular implant including an intraocular pressure sensor and having an inlet portion and a Schlemm's canal portion distal to the inlet portion, the inlet portion being disposed at a proximal end of the implant and sized and configured to be placed within an anterior chamber of a human eye, the Schlemm's canal portion being arranged and configured to be disposed within Schlemm's canal of the eye when the inlet portion is disposed in the anterior chamber.

What is claimed is: 
     
         1 . An ocular implant kit, the kit comprising:
 an ocular implant adapted to reside at least partially in a portion of Schlemm's canal of an eye, the implant comprising:
 a tubular body having an inner surface and an outer surface, the tubular body extending in a curved volume whose longitudinal axis forms an arc of a circle, the tubular body having a diameter of between 0.005 inches and 0.04 inches; 
 a plurality of open areas and strut areas formed in the tubular body, the strut areas surrounding the plurality of open areas; 
 a first pressure sensor disposed on the inner surface of the tubular body adjacent an opening of the plurality of openings, the pressure sensor comprising a diaphragm facing the elongate channel and a piezoresistor disposed on the diaphragm; and 
   a cannula defining a passageway extending from a proximal end to a distal end, the cannula having a distal opening extending through a side wall and the distal end of the cannula to form a trough, a curved distal portion, a curved intermediate portion, and a proximal portion; and   a delivery tool having a distal interlocking portion engaging a complementary interlocking portion of the ocular implant.   
     
     
         2 . The kit of  claim 1 , wherein the first pressure sensor further comprises a first substrate comprising a layered silicon substrate and a cavity, the diaphragm being disposed over the cavity, and a second substrate comprising a semiconductor wafer. 
     
     
         3 . The kit of  claim 1 , wherein the first pressure sensor includes an antenna for transmitting data from the first pressure sensor to a remote location. 
     
     
         4 . The kit of  claim 3 , wherein the data is automatically transmitted from the remote location to a second remote device. 
     
     
         5 . The kit of  claim 1 , further comprising a second pressure sensor disposed within the trough of the cannula. 
     
     
         6 . The kit of  claim 5 , wherein the second pressure sensor comprises a micro-electro-mechanical system (MEMS) pressure sensor and includes an antenna for transmitting data from the second pressure sensor to a remote location.