DEVICE FOR OCULAR ACCESS
First Claim
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1. A device comprising an elongated body having a distal end and proximal end, said ends in communication through an internal pathway within said body wherein:
- a. said distal end is configured with a sharp edge or point to penetrate into ocular tissues of the outer shell of the eye,b. a moveable guarding element disposed in a first configuration to shield said ocular tissues from said sharp edge or point, and adapted to apply a distally directed force to said tissues at the distal end of the device to displace tissue away from the distal end of the device upon entry into the suprachoroidal space or subretinal space in an eye with said distal end;
wherein said guarding element is moveable to a second configuration to expose said sharp edge or point to said tissues for penetration into said tissuesc. and an access port to deliver materials and substances through said pathway in the elongated body after deployment of the guarding element within the suprachoroidal space or subretinal space.
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Abstract
The present invention provides devices to access the suprachoroidal space or sub-retinal space in an eye via a minimally invasive transconjunctival approach. The devices may also be used after a partial dissection, for example after dissection of the outer scleral layer of the eye, and using the device within the dissection to access the suprachoroidal space or the sub-retinal space.
123 Citations
35 Claims
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1. A device comprising an elongated body having a distal end and proximal end, said ends in communication through an internal pathway within said body wherein:
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a. said distal end is configured with a sharp edge or point to penetrate into ocular tissues of the outer shell of the eye, b. a moveable guarding element disposed in a first configuration to shield said ocular tissues from said sharp edge or point, and adapted to apply a distally directed force to said tissues at the distal end of the device to displace tissue away from the distal end of the device upon entry into the suprachoroidal space or subretinal space in an eye with said distal end;
wherein said guarding element is moveable to a second configuration to expose said sharp edge or point to said tissues for penetration into said tissuesc. and an access port to deliver materials and substances through said pathway in the elongated body after deployment of the guarding element within the suprachoroidal space or subretinal space. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 25, 26, 27, 28, 29, 30, 32, 33, 34, 35)
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- 20. A device for placement in the sclera of an eye, comprising a body having a proximal end adapted for location at or near the scleral surface and a distal end adapted for location within the suprachoroidal or subretinal space, where said device comprises a lumen and a mechanical stop at the proximal end for retaining the proximal end at or near the scleral surface.
Specification