Charles: Do you know yet, in outline, the basis for saying how he deviated from Gassendi?
The only evidence for a claim is that Lamy was very much interested in the Physics of Epicurean Philosophy and applied the physics to his medical & chemical work, including the soul. He was frustrated over how Gassendi had "watered-down" Epicurus' Atomism and tried to bring it back to its original form, despite being Christian in the same way Gassendi was, I can't say whether or not (yet) he looked to Lucretius like Mettrie did, though the latter was also taught by Herman Boerhaave, who took a mechanistic approach to medicine.