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2. Birmingham gauge - Wikipedia

   en.wikipedia.org/wiki/Birmingham_gauge

   The Birmingham gauge ranges from 5/0 or 00000, the lowest gauge number corresponding to the largest size of 0.500 inches (12.7 mm), to 36, the highest gauge number corresponding to the smallest size of 0.004 inches (0.10 mm). The increments between gauge sizes are not linear and vary. [2]

3. Combined spinal and epidural anaesthesia - Wikipedia

   en.wikipedia.org/wiki/Combined_spinal_and...

   However, the standard length of a spinal needle (90mm) may be insufficiently long to reach the subarachnoid space through the Tuohy needle. An extra-long needle (e.g., 120 mm) may be required. Alternatively, several manufacturers produce packs containing both a spinal and an epidural needle which are slightly modified to fit together.

4. French catheter scale - Wikipedia

   en.wikipedia.org/wiki/French_catheter_scale

   The French scale measures and is proportional to the outer diameter of a catheter, with 1 French (Fr) defined as 1 ⁄ 3 millimeter, making the relationship: 1 mm = 3 Fr. Thus, the outer diameter of a catheter in millimeters can be calculated by dividing the French size by 3. [ 2 ]

5. Spinal anaesthesia - Wikipedia

   en.wikipedia.org/wiki/Spinal_anaesthesia

   The first planned spinal anaesthesia for surgery on a human was administered by August Bier (1861–1949) on 16 August 1898, in Kiel, when he injected 3 ml of 0.5% cocaine solution into a 34-year-old labourer. [14] After using it on six patients, he and his assistant each injected cocaine into the other's spine. They recommended it for ...

6. Surgical suture - Wikipedia

   en.wikipedia.org/wiki/Surgical_suture

   A surgical suture, also known as a stitch or stitches, is a medical device used to hold body tissues together and approximate wound edges after an injury or surgery. . Application generally involves using a needle with an attached length

7. Spinal cord stimulator - Wikipedia

   en.wikipedia.org/wiki/Spinal_cord_stimulator

   Spinal cord stimulators are placed in two different stages: a trial stage followed by a final implantation stage. First, the skin is prepped and draped utilizing sterile technique. The epidural space is accessed with loss of resistance technique using a 14-gauge Tuohy needle. The lead is fed through carefully with fluoroscopic guidance to the ...