Adipose tissue separation device with pressure equalization

A tissue separating device comprising:

• a canister device including canister body having a sidewall defining a volume;
• an adjustable height filtration assembly arranged within the canister body and including a filtering material having a top side portion and a bottom side portion, the filtering material separating the volume into an upper vacuum chamber and a lower vacuum chamber;
• a tissue retrieval port arranged on the canister device and capable of being arranged in fluid communication with a harvesting device for directing a fatty liposuction aspirate into the-volume of the canister device onto the top side portion of the filtering material;
• an air pressure equalizing line operatively mounted to the canister device to allow fluid connection between the upper vacuum chamber and the lower vacuum chamber;
• and
• a tissue harvesting port arranged in the sidewall of the canister body and capable of being arranged in communication with a collection device for atraumatically receiving a filtered pure fat component collected on the top side portion of the filtering material;
• wherein the adjustable height filtration assembly is movably arranged within the canister body such that the filtering material is adjustable with respect to the tissue harvesting port as air pressure is equalized between the upper vacuum chamber and the lower vacuum chamber via the air pressure equalization line to alleviate a negative pressure in the lower vacuum chamber when the filtering material becomes clogged.

A tissue separating device comprising:

• a canister device including canister body having a sidewall defining a volume;
• a tissue retrieval port arranged on the canister device and capable of being arranged in fluid communication with a harvesting device for directing a fatty liposuction aspirate into the volume of the canister device;
• a single adjustable height filtration assembly arranged within the canister body and including a filtering material separating the volume into an upper vacuum chamber and a lower vacuum chamber such that the fatty liposuction aspirate is directed by the tissue retrieval port into the upper vacuum chamber;
• a tissue harvesting port arranged in the sidewall of the canister body and capable of being arranged in communication with a collection device to allow the tissue harvesting port to atraumatically receive a filtered pure fat collected on the filtering material within the upper vacuum chamber;
• a vacuum connector for creating a vacuum in the upper vacuum chamber, wherein the vacuum connector and the tissue retrieval port are arranged on the same side of the filtering material so that vacuum is applied on the same side of the filtering material as the upper chamber;
• and
• an air pressure equalizing line operatively mounted to the canister device to allow fluid connection between the upper vacuum chamber and the lower vacuum chamber as a height of the filtering material is adjusted with respect to the tissue harvesting port to alleviate a negative pressure in the lower vacuum chamber when the filtering material becomes clogged.

A method of separating pure fat from a fatty liposuction aspirate comprising:

• providing a canister device defining a volume, the canister device including a tissue retrieval port, a filtration assembly including a filtering material having a top side portion and a bottom side portion and being movably arranged within the canister body, and a tissue harvesting port;
• directing a fatty liposuction aspirate into the volume of the canister device and onto the top side portion of the filtering material of the filtration assembly;
• separating the fatty liposuction aspirate using the filtering material into a filtered pure fat component collected on the top side portion of the filtering material and into an aqueous fluid component collected below the filtering material;
• moving the filtering material with respect to the tissue harvesting port into a position to place the separated pure fat collected on the top side portion of the filtering material in communication with a collection device;
• equalizing an air pressure between the upper vacuum chamber and the lower vacuum chamber as the filtering material is moved with respect to the tissue harvesting port to alleviate a negative pressure in the lower vacuum chamber when the filtering material becomes clogged;
• and
• creating a vacuum at the tissue harvesting port using the collection device to atraumatically remove the filtered pure fat from the canister body without manipulating the fat.