Device for mixing and dispensing of two-component reactive surgical sealant

摘要

An applicator for mixing and applying multi-component compositions to a work surface, such as two-component surgical sealants. A luer hub sub-assembly having a proximal hub and a distal hub, an elongate, four-lumened cannula, and a spray tip sub-assembly are provided, with interconnections between the sub-assemblies preserving isolation of the fluid components from one another. The tip cap sub-assembly includes registration structure to assure proper alignment between tip cap and tip insert. The end wall of the tip cap includes a spinner region with three feeders or feeder channels leading thereto, the fluid components remaining isolated from one another in two of the feeders or feeder channels, and initiating mixing with one another in a third of the feeders or feeder channels.

主权项

1. An apparatus for delivering a mixture of at least first and second fluid components contained in at least two respective reservoirs in a manner that prevents premature cross-contamination of the fluid components, comprising:
a luer hub sub-assembly configured to engage the at least two reservoirs and forming a first hub fluid channel and a second hub fluid channel to provide passage to a first fluid component and a second fluid component; a malleable cannula including first and second fluid-carrying lumens, each of the first and second fluid-carrying lumens being in fluid communication with a respective one of the first hub fluid channel and second hub fluid channel; and a spray tip sub-assembly disposed at an end of the cannula including at least a portion of a tip insert received in a tip cap, the tip cap having an end wall with a delivery opening therethrough, the tip insert and the tip cap forming at least three feeder channels including a first feeder channel, a second feeder channel, and a third feeder channel, and the tip insert and the tip cap defining at least three flow paths in correspondence to the at least three feeder channels, each of the feeder channels being in fluid communication with a respective one of the flow paths, the tip insert and the tip cap forming fluid communication between the first fluid carrying lumen and a first flow path of the at least three flow paths to provide for passage of the first fluid component and fluid communication between a second flow path of the at least three flow paths to provide passage for the second component, a portion of the tip cap engaging the tip insert, the tip cap and the tip insert configured so that the engagement physically separates the first flow path from the second flow path, the tip insert and the tip cap forming a third flow path of the at least three flow paths, the tip cap and the tip insert forming a first transfer channel between the first flow path and the third flow path and a second transfer channel between the second flow path and the third flow path, wherein a portion of the first fluid component is permitted to flow through the first flow path into the first feeder channel, a portion of the second fluid component is permitted to flow through the second flow path into the second feeder channel, and the remaining portions of the first and second fluid components are permitted to flow through the first and second transfer channels into the third flow path and then into the third feeder channel, each of the first, second, and third flow paths being in the form of an arcuate segment defined between a side wall of the tip insert and an interior surface of the tip cap, through which fluid components from the first and second fluid-carrying lumens pass prior to entering the feeder channels, a first of the arcuate segments receiving a fluid component from only the first fluid-carrying lumen of the malleable cannula; a second of the arcuate segments receiving a fluid component from only the second of the fluid-carrying lumen of the malleable cannula; and a third of the arcuate segments receiving fluid components from the first and second flow paths via the first and second transfer channels.