Local anesthetic syringe/components and nitrous oxide sedation
3
Local anesthetic syringe/components and nitrous oxide sedation
Instrument
Anesthetic aspirating syringe
Function
To administer a local anesthetic
Characteristics
Parts:
1. Threaded tip
2. Harpoon
3. Piston rod
4. Barrel of syringe
5. Finger grip
6. Finger bar
7. Thumb ring
8. Syringe assembled with needle and anesthetic cartridge
Practice notes
Syringes with harpoons are considered aspirating syringes.
Disposable syringes equipped with needles and preloaded with anesthetic are available.
Anesthetic Aspirating Syringe is used on most tray setups.
Anesthetic Aspirating Syringe must be cleaned, bagged individually or bagged/wrapped in a tray setup, and then sterilized. A chemical/steam indicator device should be included in the wrapping. Disposable preloaded syringes with needle must be disposed of in a Sharps container. Anesthetic cartridge and needle must be disposed of in a Sharps container. Refer to local and state recommendations for disposal of anesthetic cartridge.
Instrument
Short needle
Function
To administer anesthetic by infiltration injection on maxillary arch
Characteristics
Parts:
1. Cartridge end of needle
2. Needle hub
3. Injection end of needle
4. Protective cap
5. Seal on cap
6. Needle guard
1 inch long for infiltration injection
1. Inserts into the anesthetic cartridge
Variety of gauges:
• Gauge number—Identifies diameter (thickness) of needle
• Larger gauge number—Indicates thinner needle (e.g., 30 gauge is thinner than 25 gauge)
Practice note
Local anesthetic syringe setup is used on most tray setups.
Short Needle must be disposed of in a Sharps container. Single use only.
Instrument
Long needle
Function
To administer anesthetic by block injection on mandibular arch
Characteristics
Parts:
1. Cartridge end of needle
2. Needle hub
3. Injection end of needle
4. Protective cap
5. Seal on cap
6. Needle guard
15⁄8 inches long for block injection
1. Inserts into the anesthetic cartridge
Variety of gauges:
• Gauge number—Identifies diameter (thickness) of needle
• Larger gauge number—Indicates thinner needle (e.g., 30 gauge is thinner than 25 gauge)
Practice note
Local anesthetic syringe setup is used on most tray setups.
Long Needle must be disposed of in a Sharps container. Single use only.
Instrument
Anesthetic cartridge
Function
To hold liquid anesthetic for local injection in the oral cavity
Characteristics
Parts:
1. Rubber diaphragm—Syringe needle is inserted into the diaphragm to penetrate into the cartridge.
2.
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Instrument
Anesthetic Aspirating Syringe must be cleaned, bagged individually or bagged/wrapped in a tray setup, and then sterilized. A chemical/steam indicator device should be included in the wrapping. Disposable preloaded syringes with needle must be disposed of in a Sharps container. Anesthetic cartridge and needle must be disposed of in a Sharps container. Refer to local and state recommendations for disposal of anesthetic cartridge.
Instrument
Short Needle must be disposed of in a Sharps container. Single use only.
Instrument
Long Needle must be disposed of in a Sharps container. Single use only.
Instrument
