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US 11,484,202 B2Granted
Intraocular pressure sensor
AssigneeBoard of Trustees of Michigan State University
InventorsWen Li, Arthur J. Weber, Mohammad Hossein Mazaheri Kouhani
Life of this patent
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Abstract
A pressure sensor system is provided. In another aspect, a wireless intraocular pressure sensor includes a deformable or stretchable inductor. A further aspect of an intraocular pressure sensing system includes a deformable inductor sized to contact an eye. Another aspect provides an organ pressure sending system including a passive inductor with a wavy, serpentine or undulating shape.
Claims31
An organ pressure sensing system comprising:
- a sensor comprising a passive inductor having a stretchable undulating shape which is elongated to create at least a majority of a circle;
- a polymeric protective layer encapsulating the passive inductor;
- the sensor having an unobstructed central opening coaxial with the passive inductor when sensing;
- the polymeric protective layer having an uninterrupted inner polymeric segment between an inner surface of the passive inductor and an inner edge of the polymeric protective layer, the inner surface of the passive inductor including innermost peak surfaces located adjacent to but spaced away from the inner edge;
- and
- the polymeric protective layer having an outer segment between outermost peak surfaces of the passive inductor and a peripheral outer edge, the outermost peak surfaces being located adjacent to but spaced away from the outer edge.
3 more elements
An organ pressure sensing system comprising:
- (a) an intraocular sensor including a passive metallic inductor within a polymeric carrier,
- (i) the inductor having an elongated and stretchable wavy shape with alternating curved peaks and valleys,
- (ii) the wavy shape of the inductor configured to surround an eye pupil centerpoint,
- (iii) the sensor being configured to be removably and externally mounted to an eye without surgical implantation,
- (iv) the inductor being a single loop of no greater than 360 degrees, and
- (v) the polymeric carrier including an outer segment between the peaks and an outer edge of the carrier, the peaks being spaced away from the outer edge;
- (b) a reader including a conductive coil, a microprocessor and a power supply;
- and
- (c) the reader being spaced away from the sensor and the organ.
6 more elements
An organ pressure sensing system comprising:
- (a) an intraocular sensor including a metallic inductor within a polymeric carrier;
- (b) the inductor including a wavy shape along a majority thereof with alternating peaks and valleys;
- (c) the carrier being flexible and having a partially spherical, eye sclera-contacting surface;
- (d) the inductor being a single loop of no greater than 360 degrees;
- (e) the carrier including an outer segment between outermost of the peaks and an outer edge of the carrier, the peaks being spaced away from the outer edge;
- (f) the carrier having an inner segment between innermost of the peaks and an inner edge, the innermost peaks being spaced away from the inner edge;
- (g) an inductor lateral radial dimension defined between an inner circle, intersecting the innermost peaks, and an outer circle, intersecting the outermost peaks, being a majority of a carrier lateral radial dimension defined between the inner edge and the outer edge;
- and
- (h) a polymeric intermediate layer located between overlapping end portions of the inductor, the polymeric intermediate layer and the overlapping end portions being stacked in a direction perpendicular to the eye sclera-contacting surface.
6 more elements
Dependencies are inferred from the claim text.