초록 ▼

A method and an apparatus for applying an anesthetic includes a receptacle having an upper end, a substantially hollow interior, a lower end having a tube or nozzle extending therefrom and an attachment for attaching to the barrel of a syringe or vice versa. The receptacle receives a container or ca

A method and an apparatus for applying an anesthetic includes a receptacle having an upper end, a substantially hollow interior, a lower end having a tube or nozzle extending therefrom and an attachment for attaching to the barrel of a syringe or vice versa. The receptacle receives a container or canister containing an endothermic gas or vapor (propellant) that rapidly absorbs heat when released to the atmosphere. A depressible actuating member or trigger propels the gas or vapor through an outlet nozzle that is oriented to project a stream of gas or vapor along a delivery axis that intersects a delivery axis of the needle; therefore, the gas or vapor can be successively delivered to an injection site with minimal repositioning of the housing.

대표청구항 ▼

1. An injection apparatus comprising: a syringe, said syringe including an outer wall having a hollow interior, an upper end and a lower end, an injection needle extending from said lower end, a plunger received in said hollow interior for forcing liquid from said hollow interior through said inject

1. An injection apparatus comprising: a syringe, said syringe including an outer wall having a hollow interior, an upper end and a lower end, an injection needle extending from said lower end, a plunger received in said hollow interior for forcing liquid from said hollow interior through said injection needle, an adjunctive chamber sized to receive a canister, said adjunctive chamber attached to said syringe, said canister having a compressed endothermic gas therein, an actuating member for dispensing contents from the canister, and an outlet nozzle for dispensing contents from said canister along a delivery axis that intersects a delivery axis of said injection needle. 2. The injection apparatus of claim 1, wherein said compressed endothermic gas in the canister is dispensed when a user operates means for dispensing said compressed endothermic gas through said outlet nozzle. 3. The syringe assembly of claim 1, wherein said canister containing a compressed endothermic gas includes a valve, an actuating member is connected to the valve for dispensing the contents of the canister through the nozzle, the contents of canister being sprayed from the nozzle topically onto a skin surface. 4. The syringe assembly of claim 1, wherein a nozzle trajectory is along a delivery axis that intersects a delivery axis of said needle positioned on said syringe. 5. A syringe comprising: an elongated tubular housing having an outer wall, a substantially hollow interior, an upper end and a lower end; an injection needle extending from the lower end of the housing; an adjunctive chamber or receptacle secured to said tubular housing; a canister received within said adjunctive chamber or receptacle, said canister having a compressed, endothermic gas or vapor therein that rapidly absorbs heat when released to the atmosphere; means for dispensing a pharmaceutical composition through said injection needle; an outlet nozzle in fluid communication with said canister; means for dispensing said gas or vapor through an outlet nozzle. 6. The syringe according to claim 5, wherein said means for dispensing said pharmaceutical composition through said needle comprises: said pharmaceutical composition in said hollow interior being in fluid communication with said needle; a plunger received within said hollow interior that, when depressed, forces the pharmaceutical composition from said hollow interior into said needle. 7. The syringe according to claim 5, wherein said nozzle is oriented to project said gas or vapor along a delivery axis that intersects a delivery axis of the needle allowing said gas or vapor and said pharmaceutical composition to be successively delivered to an injection site with minimal repositioning of the housing.