Composite ophthalmic microcannula
First Claim
1. A composite microcannula for access and advancement into a tissue space of the eye comprising:
- at least one flexible, tubular communicating element configured to fit within the tissue space and having an outer diameter of no more than 350 microns, the communicating element having a proximal end and a distal end;
a proximal connector attached to said proximal end, said proximal connector configured for introduction of materials, energy or tools;
and a reinforcing member connected with the communicating element, and wherein the composite microcannula has a flexural rigidity in the range of 3.09 E-11 to 2.86 E-10 kN*m2.
3 Assignments
0 Petitions
Accused Products
Abstract
Microcannulae are constructed with multiple components in a composite design, allowing the microcannulae to have varying mechanical and delivery properties that will enable ophthalmic treatments by minimally invasive means. The microcannula includes at least one flexible, tubular communicating element with an outer diameter of 350 microns or less, a proximal connector for introduction of materials, energy or tools. It may also include a reinforcing member attached to the communicating element, which may be designed to create variable stiffness along the length of the microcannula. The microcannula may also include other features such as a signal beacon near the distal tip.
276 Citations
26 Claims
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1. A composite microcannula for access and advancement into a tissue space of the eye comprising:
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at least one flexible, tubular communicating element configured to fit within the tissue space and having an outer diameter of no more than 350 microns, the communicating element having a proximal end and a distal end; a proximal connector attached to said proximal end, said proximal connector configured for introduction of materials, energy or tools; and a reinforcing member connected with the communicating element, and wherein the composite microcannula has a flexural rigidity in the range of 3.09 E-11 to 2.86 E-10 kN*m2. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A composite microcannula for access and advancement into a tissue space of the eye comprising:
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at least one flexible, tubular communicating element with an outer diameter of no more than 350 microns, said communicating element having a proximal end, a distal end, and a fluid communicating lumen, a proximal connector configured for delivery of fluid, a signal beacon, and a second communicating element configured to deliver the signal beacon, the signal beacon being capable of identifying the microcannula distal tip, and wherein the composite microcannula has a flexural rigidity in the range of 3.09 E-11 to 2.86 E-10 kN*m2. - View Dependent Claims (24, 25, 26)
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Specification