Anes-Lecture-3-12716-12916.pdf - Dr Celian Teng Lecture#3 Anesthesiology Page 1 of 6 • Breech loading cartridge is inserted Armamentarium 1 Syringe 2

Anes-Lecture-3-12716-12916.pdf - Dr Celian Teng Lecture#3...

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Dr. Celian Teng Lecture #3 (12/7/16 & 12/9/16) Anesthesiology Page of 1 6 Armamentarium 1. Syringe 2. Needle 3. Cartridge Dental Cartridge Syringe - one of the 3 essential components of the local anaesthetic armamentarium Criteria for Acceptable Syringe 1. Durable and able to withstand sterilisation without damage (if the unit is disposable it would be packaged in a sterile container) 2. Capable of accepting wide variety of cartridges and needles of different manufacturers and should permit repeated use 3. Inexpensive, self contained lightweight and simple to use with one hand 4. Should provide for effective aspiration and be constructed so that blood may be easily observed in the cartridge The old type is non-aspirating Parts Types: I. Non Disposable A. Breech Loading, Metallic, Cartridge type, Aspirating most commonly used in dentistry Breech loading - cartridge is inserted into the syringe from the side of the barrel the needle is attached to the barrel of the syringe at the needle adaptor has a short , hook shaped end (harpoon) attached at the piston that is used to prevent the silicon rubber stopper thumb ring and finger grip - give the administrator added control over the syringe a) Finger Grip b) Thumb Ring B. Breech Loading, Plastic, Cartridge type, Aspirating C. Breech Loading, Metallic, Cartridge type, Self aspirating Advantages Disadvantages Visible Cartridge Weight Aspiration with 1 hand Syringe may be too bof for small operators Autoclvable Possibility of infection with improper care Rust resistant Long lasting with proper maintenance Denise Roman
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Dr. Celian Teng Lecture #3 (12/7/16 & 12/9/16) Anesthesiology Page of 2 6 - a metal projection within the barrel depresses the diaphragm of the local anaesthetic cartridge - pressure on he thumb disc (arrow) increases pressure within the cartridge. Release of pressure on the thumb disc produces self-aspiration test D. Pressure Syringe for Periodontal Ligament Injection E. Jet injector (“Needle Less” Syringe) II. Disposable Syringes III. Safety Syringes The sliding cap makes it safe IV. Computer assisted Local Anesthetic Delivery System Care and Handling 1. After each use, the syringe should be throughly washed and rinsed so as to be free of any local anaesthetic solution, saliva or other foreign matter. The syringe should be autoclaved in the same manner as other surgical instruments 2. Every 5 autoclaves - it must be oiled Following repeated autoclaving, the syringe should be dismantled and lubricated at all threaded joints with a light oil 3. Harpoon should be cleaned with a brush after each use 4. To ensure reliable aspiration, the piston and harpoon should be replaced if the harpoon loses its sharpness and readily disengages from the rubber stopper of the cartridge of the harpoon is bent Problems of Syringes 1. Leakage during injection
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