DEVICE FOR SAMPLING SUBCUTANEOUS ADIPOSE TISSUE IN PATIENTS WITH EXTENSIVE SKIN BURNS Russian patent published in 2023 - IPC A61M1/00 A61B90/00 

FIELD: medicine; medical equipment.

SUBSTANCE: invention relates to medical equipment and can be used as a counter stop for a syringe in order to create and maintain negative pressure necessary for taking adipose tissue in undamaged areas of the body of limited area in patients with burns. A device for sampling subcutaneous adipose tissue in patients with extensive skin burns consists of two semi-cylindrical parts with a semi-cylindrical protrusion from the proximal end for fixation in a medical drill chuck, which are assembled into a single cylindrical structure by tongue-and-groove joints. One part — a hollow semi-cylinder — contains a one-way intra-lock mechanism, represented by four stops-teeth, the maximum distance from the inner surface of the half-cylinder to the edge of the stop-tooth is 30–35% of the diameter of the syringe rod stop. On the cross section through the axis of the cylinder, the distal side of the stops-teeth has a slope of 35°, and the proximal side of the teeth stops has a slope of 90°. On the distal base in the middle along the axis of the cylinder, a longitudinal open groove is made, corresponding in depth to 50% of the width of the syringe rod. On teeth-stops, open grooves are made so that their lower level corresponds to the lower level of the base groove. The other part of the device is a solid semi-cylinder, corresponding in its size to the first semi-cylinder and containing transverse grooves on the inner surface, arranged so that the distal edge of each groove corresponds to the edge of each stop-tooth. The depth of the groove is 30–35% of the diameter of the stop of the syringe rod. A longitudinal open groove is made in the middle along the axis of the cylinder, corresponding in its depth to 50% of the width of the syringe rod.

EFFECT: reduction of the risk of perforation of the underlying tissues with cannulas and infectious complications in the area of adipose tissue sampling in patients with extensive skin burns by replacing the reciprocating movements of the cannula from outside to inside and back to rotational movements.

1 cl, 5 dwg