Method and apparatus for subretinal administration of therapeutic agent
First Claim
1. An apparatus for delivering therapeutic agent to an eye, wherein the apparatus comprises:
- (a) a body;
(b) a cannula extending distally from the body, wherein the cannula is sized and configured to be insertable between a choroid and a sclera of a patient'"'"'s eye, wherein the cannula defines a longitudinal axis;
(c) a hollow needle, wherein the hollow needle is slidable relative to the cannula; and
(d) an actuation assembly, wherein the actuation assembly is operable to actuate the hollow needle relative to the cannula, wherein the actuation assembly comprises;
(i) a knob, and(ii) a coupling element that operatively couples the knob with the hollow needle, wherein the coupling element is slidably engaged with the knob and is configured to translate axially relative to the knob,wherein the knob is rotatable relative to the body to drive movement of the coupling element relative to the body and thereby drive actuation of the hollow needle relative to the cannula.
17 Assignments
0 Petitions
Accused Products
Abstract
An apparatus for delivering therapeutic agent to an eye includes a body, a cannula, a hollow needle, and an actuation assembly. The cannula extends distally from the body and is sized and configured to be insertable between a choroid and a sclera of a patient'"'"'s eye. The actuation assembly is operable to actuate the needle relative to the cannula to thereby drive a distal portion of the needle along an exit axis that is obliquely oriented relative to the longitudinal axis of the cannula. The cannula may be inserted through a sclerotomy incision to position a distal end of the cannula at a posterior region of the eye, between the choroid and sclera. The needle may be advanced through the choroid to deliver the therapeutic agent adjacent to the potential space between the neurosensory retina and the retinal pigment epithelium layer, adjacent to the area of geographic atrophy.
-
Citations
18 Claims
-
1. An apparatus for delivering therapeutic agent to an eye, wherein the apparatus comprises:
-
(a) a body; (b) a cannula extending distally from the body, wherein the cannula is sized and configured to be insertable between a choroid and a sclera of a patient'"'"'s eye, wherein the cannula defines a longitudinal axis; (c) a hollow needle, wherein the hollow needle is slidable relative to the cannula; and (d) an actuation assembly, wherein the actuation assembly is operable to actuate the hollow needle relative to the cannula, wherein the actuation assembly comprises; (i) a knob, and (ii) a coupling element that operatively couples the knob with the hollow needle, wherein the coupling element is slidably engaged with the knob and is configured to translate axially relative to the knob, wherein the knob is rotatable relative to the body to drive movement of the coupling element relative to the body and thereby drive actuation of the hollow needle relative to the cannula. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. An apparatus for delivering therapeutic agent to an eye, wherein the apparatus comprises:
-
(a) a body defining a longitudinal axis; (b) a cannula extending distally from the body, wherein the cannula is sized and configured to be insertable between a choroid and a sclera of a patient'"'"'s eye; (c) a hollow needle, wherein the hollow needle is slidable relative to the cannula; and (d) an actuation assembly, wherein the actuation assembly is operable to actuate the hollow needle relative to the cannula, wherein the actuation assembly comprises; (i) a knob, wherein the knob is rotatable relative to the body, (ii) an actuation member operatively coupled with the hollow needle, wherein the actuation member is translatable with the hollow needle relative to the body, (iii) a channel, wherein the channel extends in a plane parallel to the longitudinal axis, and (iv) a protrusion slidably engaged with the channel, wherein the protrusion extends transversely to the longitudinal axis and is operatively coupled with the actuation member and with the knob, wherein the protrusion is configured to translate axially through the channel in response to rotation of the knob relative to the body to thereby drive translation of the actuation member relative to the body and actuation of the needle relative to the cannula.
-
Specification