SPECIAL INSTRUMENTS IN SURGERY
To obtain tissue for histopathologic examination is an important part of a surgeon’s functions. Scraping from cavities are obtained by Volkmann’s scoop and Sims, uterine curette; Menghini and Silverman needles obtain access through unbroken skin; and Chevalie–Jackson biopsy forceps is used for obtaining biopsy material under vision through proctoscope or a sigmoidoscope.
Biopsy instruments are used for obtaining material for histologic examination.
Those in use are as follows:
· Volkmann’s scoop
· Sims’ uterine curette
· Menghini needle
· Silverman needle
· Chevalier–Jackson biopsy forceps
Silverman biopsy needle
Identification points
· This is a fine-bore needle with a stillete that fits into the tip.
· There is a double-flange stillete that goes beyond the tip.
Uses
· TO OBTAIN A CYLINDER OF TISSUE FOR MICROSCOPIC EXAMNATION
How is biopsy done?
·The patient lies for liver biopsy, and the physician stands on the right side.
·The upper abdomen is cleaned and draped, and local anaesthesia is injected in 9th intercostals space in the mid-axillary line (right).
·The patient holds his/her breath, and the needle with obturator is introduced.
·The spilt needle replaces obturator and cuts the tissue as a 360° turn is undertaken (360° turn).
·The tissue in the flanged stillete is put in preservation solution.
·The puncture area is sealed, and this is sent for histopathology report.
·The patient is kept under observation for 1 day.
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