Intraretinal delivery and withdrawal instruments
First Claim
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1. A method for grafting cells into an intraretinal eye area which comprises the steps of:
- inserting an intraocular delivery and withdrawal instrument into the retinal area of the eye, said instrument comprising an elongated handle having a distal end and a proximal end and shaped and dimensioned to be grasped by the hand of a user and an elongated curved frame extending from the distal end of the handle and having a proximal end; and
a tip extending from said distal end of the frame;
said frame and tip being shaped and dimensioned for insertion into an orbit in said insertion direction so as to place said tip adjacent to the retina and pointing in a direction for penetration into the intraocular region of the eye when said tip is moved generally in the medial direction; and
transferring cells from the instrument into said retinal area to thereby graft the cells into the intraocular eye area.
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Abstract
An intraretinal delivery and withdrawal instrument which has (a) a curved, distal frame for insertion into an orbit, which insertion is effected (i) inferior to the supraorbital ridge, (ii) superior to the eye, and (iii) in a caudal direction so as to reach the retina; (b) a tip for penetration into the subretinal region of the eye connected to the frame; and (c) an adjustable collar connected to the tip which collar is capable of being positioned so that the collar regulates the depth of tip penetration into the subretinal region including methods for uses thereof.
110 Citations
10 Claims
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1. A method for grafting cells into an intraretinal eye area which comprises the steps of:
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inserting an intraocular delivery and withdrawal instrument into the retinal area of the eye, said instrument comprising an elongated handle having a distal end and a proximal end and shaped and dimensioned to be grasped by the hand of a user and an elongated curved frame extending from the distal end of the handle and having a proximal end; and
a tip extending from said distal end of the frame;
said frame and tip being shaped and dimensioned for insertion into an orbit in said insertion direction so as to place said tip adjacent to the retina and pointing in a direction for penetration into the intraocular region of the eye when said tip is moved generally in the medial direction; andtransferring cells from the instrument into said retinal area to thereby graft the cells into the intraocular eye area. - View Dependent Claims (2, 3, 4)
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5. An instrument for grafting cells at a predetermined depth in an intraretinal eye area comprising:
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an elongated handle having a distal end and a proximal end and shaped and dimensioned to be grasped by the hand of a user; an elongated curved frame extending from the distal end of the handle and having a proximal end; a tip extending from said distal end of the frame, said tip and frame being shaped and dimensioned for insertion into an orbit along an insertion path around the periphery of the eye so as to place said tip adjacent to the retina and pointing in a direction for penetration into the intraocular region of the eye; and an adjustable collar secured to the instrument to limit the depth to which said tip penetrates into the intraocular area of the eye to said predetermined depth. - View Dependent Claims (6, 7, 8, 9, 10)
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Specification