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2. Surgical suture - Wikipedia

   en.wikipedia.org/wiki/Surgical_suture

   Application generally involves using a needle with an attached length of thread. There are numerous types of suture which differ by needle shape and size as well as thread material and characteristics. Selection of surgical suture should be determined by the characteristics and location of the wound or the specific body tissues being ...

3. 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 ]

4. 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] At higher gauge numbers, the increment between the two ...

5. Suture materials comparison chart - Wikipedia

   en.wikipedia.org/wiki/Suture_materials...

   The PDS suture knots must be properly placed to be secure. Conjunctival and vaginal mucosal sutures remaining in place for extended periods may be associated with localized irritation. Subcuticular sutures should be placed as deeply as possible in order to minimize the erythema and induration normally associated with adsorption.

6. Central venous catheter - Wikipedia

   en.wikipedia.org/wiki/Central_venous_catheter

   Once implanted, the port is accessed via a "gripper" non-coring Huber-tipped needle (PowerLoc is one brand, common sizes are 0.75 and 1 inch (19 and 25 mm) length; 19 and 20 gauge. The needle assembly includes a short length of tubing and cannula) inserted directly through the skin. The clinician and patient may elect to apply a topical ...

7. Hypodermic needle - Wikipedia

   en.wikipedia.org/wiki/Hypodermic_needle

   Pravaz designed a hypodermic needle measuring 3 cm (1.18 in) long and 5 mm (0.2 in) in diameter; it was made entirely of silver. [ citation needed ] Charles Hunter , a London surgeon, is credited with the coining of the term "hypodermic" to describe subcutaneous injection in 1858.