![Key hole surgery. Close-up of a trochar (hollow tube-like needle) being inserted into the abdomen of a patient. Key hole surgery (laparoscopy) is a ty Stock Photo - Alamy Key hole surgery. Close-up of a trochar (hollow tube-like needle) being inserted into the abdomen of a patient. Key hole surgery (laparoscopy) is a ty Stock Photo - Alamy](https://c8.alamy.com/comp/2ACFRAY/key-hole-surgery-close-up-of-a-trochar-hollow-tube-like-needle-being-inserted-into-the-abdomen-of-a-patient-key-hole-surgery-laparoscopy-is-a-ty-2ACFRAY.jpg)
Key hole surgery. Close-up of a trochar (hollow tube-like needle) being inserted into the abdomen of a patient. Key hole surgery (laparoscopy) is a ty Stock Photo - Alamy
![Keyhole surgery instrument. Surgeon holding a trochar fitted with a dilating tip (yellow). This hollow tube-like needle is inserted into a patient at Stock Photo - Alamy Keyhole surgery instrument. Surgeon holding a trochar fitted with a dilating tip (yellow). This hollow tube-like needle is inserted into a patient at Stock Photo - Alamy](https://c8.alamy.com/comp/2ACK7NE/keyhole-surgery-instrument-surgeon-holding-a-trochar-fitted-with-a-dilating-tip-yellow-this-hollow-tube-like-needle-is-inserted-into-a-patient-at-2ACK7NE.jpg)
Keyhole surgery instrument. Surgeon holding a trochar fitted with a dilating tip (yellow). This hollow tube-like needle is inserted into a patient at Stock Photo - Alamy
![General set up of the instrumented trochar installed in the trainer.... | Download Scientific Diagram General set up of the instrumented trochar installed in the trainer.... | Download Scientific Diagram](https://www.researchgate.net/publication/221910954/figure/fig8/AS:668343887486994@1536357008984/General-set-up-of-the-instrumented-trochar-installed-in-the-trainer-The-image-shows-the.png)
General set up of the instrumented trochar installed in the trainer.... | Download Scientific Diagram
Two trochar and canula deflating tools for stabbing through the side gut of cattle and a pair of lam
![Key hole surgery. Close-up of a small trochar (hollow tube-like needle, centre) inserted in the abdomen of a patient. A hose (seen in background) is c Stock Photo - Alamy Key hole surgery. Close-up of a small trochar (hollow tube-like needle, centre) inserted in the abdomen of a patient. A hose (seen in background) is c Stock Photo - Alamy](https://c8.alamy.com/comp/2ACFRAX/key-hole-surgery-close-up-of-a-small-trochar-hollow-tube-like-needle-centre-inserted-in-the-abdomen-of-a-patient-a-hose-seen-in-background-is-c-2ACFRAX.jpg)
Key hole surgery. Close-up of a small trochar (hollow tube-like needle, centre) inserted in the abdomen of a patient. A hose (seen in background) is c Stock Photo - Alamy
![A blunt 11 mm laparoscopic trochar is utilized to make the entry into... | Download Scientific Diagram A blunt 11 mm laparoscopic trochar is utilized to make the entry into... | Download Scientific Diagram](https://www.researchgate.net/publication/342499004/figure/fig2/AS:1084229534392323@1635511873051/A-blunt-11mm-laparoscopic-trochar-is-utilized-to-make-the-entry-into-the-abdominal.jpg)