SYRINGE CARPULE FOR STORING, TRANSPORTING AND IN SITU MIXING OF LOCAL ANESTHETIC AND BUFFER, AND FOR DELIVERY OF BUFFERED ANESTHETIC SOLUTION AND A PIERCING-MIXING UNIT THEREFORE

摘要

A syringe carpule for storing, transporting and in situ mixing of a local anesthetic, such as lidocaine, and a buffer, such as sodium bicarbonate, and delivery of buffered anesthetic solution comprises a hollow tubular body received within the frame of a carpule syringe, at least one axially movable plunger within the body and configured to be engaged and moved by a rod of the carpule syringe, a seal pierced by a rear portion of a needle coupled to the carpule syringe, a first chamber within the body filled with anesthetic solution during storing and transport, a second chamber defined within the body filled with buffering solution during storing and transport; and a breachable separating member between the first and second chamber configured to be removed by a piercing-mixing unit for in situ mixing of the buffering and the anesthetic solutions allowing for delivery of a buffered anesthetic solution.

主权项

1. A syringe carpule for storing, transporting, in situ mixing and delivery of a mixed buffered anesthetic solution, comprising
A hollow tubular body configured to be received within the frame of a carpule syringe; At least one axially movable plunger within the tubular body and configured to be engaged and moved by a rod of the carpule syringe; A seal configured to be pierced by a rear portion of a needle coupled to the carpule syringe; A first chamber defined within the hollow tubular body filled with one of an anesthetic solution or a buffering solution during storing and transport; A second chamber defined within the hollow tubular body filled with the other of an anesthetic solution or a buffering solution during storing and transport; and A breachable separating member between the first chamber and the second chamber, wherein the separating member is configured to be breached for in situ mixing of the buffering solution and the anesthetic solution prior to delivery of material to allow for delivery of a buffered anesthetic solution.