Non Suture Needles Flashcards
Non suture needles
– Hypodermic needles
– Spinal needles
– A/V cannula needles
– Heparin Needles
– Biopsy Needles
Hypodermic needles
- inject meds in tissues or intravenous tubing
- may be used to withdraw fluid from tissues
Length Range: 1/2-4in
Gauge Size: 12-30; with smaller needles having the large gauge number
SR uses them to withdraw meds into a syringe from a vial held by a circulator
Spinal needles
- typically used to introduce anesthetic agents into the epidural or subdural space – can obtain cerebral spinal fluid for diagnostic purposes
Size: Assemblies are 3-4 in long w/ a sharp, beveled stylet with in the metal cannula
A/V cannula needles or Venous/Cannula Needle
- a needle to introduce a plastic indwelling catheter into a vessel (Commonly called an IV in order to deliver fluids, blood or blood products into the circulatory system
- can obtain arterial blood gases or are attached to a line leading to a transduce to directly monitor arterial blood pressure
Ex. Intravenous cannula/needles ex. Angio-Cath, are attached to IV lines to introduce fluids or medications
Ex. Arterial needles ex. Potts-Cournand needle/cannula are used to introduce diagnostic or angioplasty guiding catheters over guiding wires into the arterial system
Ex. Venous needle w/ aspirating syringe are used to puncture large veins to introduce a monitoring catheter ex. Swan-Ganz
Heparin Needles
attached to syringes that are used during open cardiovascular procedures to irrigate open arteries with a saline-heparin solution
Biopsy Needles
- to obtain tissue samples from with in the body for biopsy
- can sometimes be guided w/ the aid of CT scan or fluoroscopy
Ex.
. Dorsey cannulated needle: used for biopsy of cerebral tissue through a burr hole
. Chiba biopsy needle: used for biopsy of the liver & other internal organs
. Tru-Cut biopsy needle: has a sharp cutting cannula to facilitate insertion into the tissue and cutting the tissue
