Injector for viscous materials
First Claim
1. A device for delivering microquantities of viscous materials comprisingan injector for delivery of viscous materials from a cartridge containing a prepackaged quantity of said viscous materials, said injector comprising a syringe body with a proximal end, a distal end with an outlet and a hollow bore between the ends sized and shaped to receive said cartridge;
- an internal needle in communication with said outlet and internal to the distal end of said injector, said internal needle located for penetration of said cartridge;
and a plunger disposed within the hollow bore coupled to a positive displacement mechanism that progressively advances the plunger toward the distal end of the syringe body to eject the material within a cartridge in the hollow bore through said outlet; and
a microcannula or microcatheter attached to said outlet in communication with said needle.
6 Assignments
0 Petitions
Accused Products
Abstract
An injector is provided to deliver microquantities of viscous materials into the body, such as the eye, for surgical purposes. The injector comprises a syringe body with a plunger disposed therein coupled to a positive displacement mechanism capable of progressively advancing the plunger to precisely deliver microquantities of materials at a constant or predetermined delivery rate.
237 Citations
25 Claims
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1. A device for delivering microquantities of viscous materials comprising
an injector for delivery of viscous materials from a cartridge containing a prepackaged quantity of said viscous materials, said injector comprising a syringe body with a proximal end, a distal end with an outlet and a hollow bore between the ends sized and shaped to receive said cartridge; -
an internal needle in communication with said outlet and internal to the distal end of said injector, said internal needle located for penetration of said cartridge; and a plunger disposed within the hollow bore coupled to a positive displacement mechanism that progressively advances the plunger toward the distal end of the syringe body to eject the material within a cartridge in the hollow bore through said outlet; and a microcannula or microcatheter attached to said outlet in communication with said needle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A kit for delivering microquantities of viscous materials comprising
an injector for delivery of viscous materials from a cartridge containing a prepackaged quantity of said viscous materials, said injector comprising a syringe body with a proximal end, a distal end with an outlet and a hollow bore between the ends sized and shaped to receive said cartridge; -
an internal needle in communication with said outlet and internal to the distal end of said injector, said internal needle located for penetration of said cartridge; and a plunger disposed within the hollow bore coupled to a positive displacement mechanism that progressively advances the plunger toward the distal end of the syringe body to eject the material within a cartridge in the hollow bore through said outlet; and a microcannula or microcatheter adapted for attachment to said outlet in communication with said needle. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification