Device for alkalizing local anesthetic injection medication
First Claim
1. A device for alkalizing a local anesthetic injection comprising in combination a local anesthetic carrier being substantially cylindrical and having opposite ends and a bottom, a disposable cartridge having opposite ends and containing a buffering solution having means at one end of the cartridge for removably securing said cartridge to said anesthetic carrier, hollow needle means on said end of the cartridge communicating with said buffering solution for transferring said buffering solution from said cartridge through one end of said carrier, a movable stopper in the bottom of said carrier spaced adjacent to the opposite end of said carrier whereby when said buffering solution enters said carrier said stopper moves toward said opposite end in order to enlarge the interior space of said carrier to accommodate the buffering solution that is transferred therein from said cartridge.
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Accused Products
Abstract
A disposable cartridge containing a buffering solution for attachment to a local anesthetic carrier in order to alkalize the anesthetic. The cartridge is provided with a needle which permits the buffering solution to enter the carrier and mix with the anesthetic solution.
76 Citations
14 Claims
- 1. A device for alkalizing a local anesthetic injection comprising in combination a local anesthetic carrier being substantially cylindrical and having opposite ends and a bottom, a disposable cartridge having opposite ends and containing a buffering solution having means at one end of the cartridge for removably securing said cartridge to said anesthetic carrier, hollow needle means on said end of the cartridge communicating with said buffering solution for transferring said buffering solution from said cartridge through one end of said carrier, a movable stopper in the bottom of said carrier spaced adjacent to the opposite end of said carrier whereby when said buffering solution enters said carrier said stopper moves toward said opposite end in order to enlarge the interior space of said carrier to accommodate the buffering solution that is transferred therein from said cartridge.
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6. A device for raising the pH level of a local anesthetic medication from acidic to less acidic and having a local anesthetic carrier and a cartridge, said cartridge having two ends and a buffering solution and being capable of being removably attached to said carrier comprising:
- a hollow needle projecting from one end of the cartridge and in communication with said buffering solution, a skirt on one end of said cartridge surrounding said needle, a frictional surface on an inside surface of said skirt whereby the skirt of the carrier is frictionally attached to one end of said carrier, said one end of said carrier having an puncturable seal, and said needle puncturing said seal when said when said cartridge is forced against aid one end of the carrier to permit the transferring of said buffering solution from said cartridge to said carrier.
- View Dependent Claims (7, 8, 9, 10)
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11. A device for alkalizing a local anesthetic medication in combination with a carpule having said medication comprising a syringe having a buffering solution therein, said syringe having a needle at one end and a plunger at the opposite end and provided with a depending skirt, one said one end surrounding said syringe the needle of said syringe being located within said skirt, said carpule having one end with a membrane, said skirt being adopted to frictionally fit over said one end of the carpule whereby the needle punctures said membrane when said plunger is depressed and the buffering solution therein is transferred through said needle to mix the anesthetic solution in the carpule.
- 12. A system for alkalizing a local anesthetic medication in a carrier member comprising in combination a carrier member having said local anesthetic medication therein, an intermediate cylinder, a double-ended needle in said cylinder, a double-ended protective skirt projecting from opposite ends of said intermediate cylinder and a cartridge having a buffering solution therein, said carrier member being provided with a membrane on one end and a movable stopper at the other end, said cartridge having a closure member at one end, said intermediate cylinder having the skirt at one end being inserted over one end of said carrier member whereby one end of the double-ended needle punctures and passes through the membrane of said carrier member, and said cartridge with the buffering solution is inserted within the skin at the opposite end of said intermediate cylinder whereby the other end of the double-ended needle punctures and passes through the closure member of said cartridge thereby permitting the flow of said buffering solution from said cartridge through said double-ended needle and into said carrier member having the local anesthetic medication threrein.
Specification