LOADING AND UNLOADING OF CARTRIDGE OF SURGICAL STAPLER Russian patent published in 2022 - IPC A61B17/72 

FIELD: medical equipment.

SUBSTANCE: group of inventions relates to medical equipment, namely to surgical staplers and stapling with staples. A loading device for use in a surgical stapler capable of engaging with a working channel of the stapler and a working cartridge with a curved tip, held by this channel of the surgical stapler, contains a cavity, a proximal upper spring, a proximal lower spring, as well as a distal lower spring. The cavity is formed in the loading device. At least a distal section of the working cartridge with a curved tip is held in the cavity. The proximal upper spring is formed in an upper section of the loading device and continues down into the cavity. The proximal upper spring is moved down to the working cartridge with a curved tip with the first force. The proximal lower spring is formed in a lower section of the loading device and continues upward into the cavity. The proximal lower spring is displaced upward to the working cartridge with a curved tip with the second force exceeding the first force. The distal lower spring is formed in the lower section of the loading device and continues upward into the cavity at a place located distally relatively to the proximal lower spring. The distal lower spring is engaged with a distal segment of the working cartridge with a curved tip to raise the distal end of the working cartridge with a curved tip relatively to its proximal end. A working method for a loading device for use in a surgical stapler contains the capture of the loading device, the cartridge with a curved tip, held by the loading device, an unloading device, as well as the surgical stapler, while the surgical stapler contains a stop and a channel at its distal end, wherein at least one of the mentioned stop and channel can perform rotation relatively to the other of these elements; initiation of movement of at least one of the mentioned loading device and channel in the direction of the other of them; as a result of initiation, engagement of the loading device and the cartridge with a curved tip with the channel; initiation of movement of at least loading device or channel from the other of them, while the cartridge with a curved tip remains engaged with the channel after initiation.

EFFECT: use of inventions makes it possible to simplify the process of loading and unloading of cartridges with staples, having curved tips.

13 cl, 14 dwg