FIELD: medicine.
SUBSTANCE: group of inventions relates to medicine. Surgical stapler according to the first embodiment comprises a first portion of the handle, a second portion of the handle and an adjustment mechanism. First part of the handle contains staple cartridge, detachable cartridge of staple cartridge, locking lever and drive assembly. Handle second part comprises staple seat and rotary shaft. First part of handle and second part of handle are configured to be assembled and locked in longitudinal direction by locking lever on first part of handle. Adjustment mechanism is located on proximal end of stapler between first part of handle and second part of handle and is made with possibility of rotation by user, causing rotation of second part of handle relative to first part of handle around the pivoting shaft thereon so that the thickness of the tissue after clamping is levelled at the proximal and distal ends. Adjustment mechanism represents a cam mechanism including a rotary disc, a rotary disk handwheel, a pin, a compression spring, an adjusting slider and a sliding pin. Rotary disk is connected with first part of handle by means of said pin and compression spring. Adjusting slider is connected to the second part of the handle by means of the specified sliding pin. Round hole based on the staple cartridge is coaxially aligned with the pin, the rotary disc and the adjustment slider. Rotary disk flywheel is connected with rotary disc, which includes at least two stepped surfaces. One end of the adjustment slider is engaged with one of the stepped surfaces of the rotary disc, and other end is connected to second part of handle by means of sliding mechanism. Turning handwheel of rotary disc drives rotary disc, resulting in adjustment slider, which is engaged with rotary disc, displaces vertically relative to stepped surface, thereby actuating second part of handle by means of sliding pin, turning it relative to first part of handle until thickness of tissue after compression is aligned at proximal and distal ends. Surgical stapler according to the second embodiment comprises a first portion of the handle, a second portion of the handle and an adjustment mechanism. First part of handle comprises staple cartridge assembly and drive assembly. Handle second part comprises staple seat. On the first part of the handle and/or the second part of the handle there is a locking mechanism. First part of handle and second part of handle are rotatable by means of rotary mechanism and locked in longitudinal direction by locking mechanism. Adjustment mechanism is located between the first part of the handle and the second part of the handle and is made with possibility to cause rotation of the second part of the handle relative to the first part of the handle by means of the rotary mechanism on it. Adjustment mechanism represents a cam mechanism including a flywheel of a rotary disc, a rotary disc and an adjustment slider. Flywheel of rotary disc is connected with rotary disc including at least two stepped surfaces. One end of the adjustment slider is engaged with one of the stepped surfaces of the rotary disc. Other end is connected to the second part of the handle by means of the sliding mechanism. Turning handwheel of rotary disc drives rotary disc together with handwheel, resulting in adjustment slider, which is engaged with rotary disc, shifted vertically relative to stepped surface, thereby actuating second part of handle by means of sliding mechanism, turning it relative to first part of handle until tissue thickness after pressing is aligned on proximal and distal ends. Surgical stapler of the third embodiment comprises a first portion of the handle, a second portion of the handle and an adjustment mechanism. First part of handle comprises staple cartridge, staple cartridge assembly and drive assembly. Handle second part comprises staple seat. On the first part of the handle and/or the second part of the handle there is a locking mechanism. First part of handle and second part of handle are rotatable by means of rotary mechanism and locked in longitudinal direction by locking mechanism. Adjustment mechanism is located between the first part of the handle and the second part of the handle and is made with possibility to cause rotation of the second part of the handle relative to the first part of the handle by means of the rotary mechanism on it. Adjustment mechanism comprises rotary disc, rotary disk handle, pin, compression spring, adjusting slider and sliding pin. Rotary disk is connected with first part of handle by means of said pin and compression spring. Adjusting slider is connected to the second part of the handle by means of a sliding pin. Round hole in the staple cartridge base is coaxially aligned with the pin, the rotary disc and the adjustment slider. Rotary disk of adjustment mechanism disc is connected with rotary disc, which includes at least two stepped surfaces. Adjusting slider is engaged with one of step surfaces of rotary disc. Turning the rotary disc slider rotates the rotary disc, as a result of which the adjustment slider, which is engaged with the rotary disc, shifts vertically relative to the stepped surface, thereby actuating second part of handle by means of sliding pin, rotating it relative to first part of handle until thickness of tissue after clamping is aligned at proximal and distal ends.
EFFECT: inventions provide the same thickness of the tissue after clamping on the proximal and distal ends (stapler), helping to improve staple strain rate and reduce bleeding from the suture, inconsistency of the anastomosis and the like.
3 cl, 10 dwg
