PLUNGER COUPLE FOR SURGICAL INSTRUMENTS, APPARATUSES, DEVICES AND METHOD OF ASSEMBLING PLUNGER COUPLE FOR SURGICAL INSTRUMENTS, APPARATUSES, DEVICES Russian patent published in 2008 - IPC A61B17/3203 B62J1/14 B62J1/20 B65B3/32 A61B17/00 A61B17/32 B67C3/20 F01B19/00 

FIELD: plunger couple and method of assembling of plunger couple can be used in liquid jet surgical instruments or for weighers of medicinal preparations.

SUBSTANCE: plunger couple has at least single external part in form of case and at least one internal part. Hollow insertion is encapsulated into external part. Internal part is provided with aids for kinematics connection with drive. Case is made in form of metal shock-proof sleeve. At least one edge of case and at least one edge of hollow insertion are disposed at the same plane or put apart one from other for distance which doesn't exceed one minimal external diameter of hollow insertion. Wall of hollow insertion has minimal thickness which exceeds minimal thickness of wall of case 1,7 times minimum. Hollow insertion and internal part are made of leuco-sapphire. When assembling plunger couple, first and second items are subject to deep cooling. First item is made of leuco-sapphire in form of hollow insertion of external part of plunger couple. Second item is made in form of case of external part of plunger couple. Case is made in form of metal shock-proof sleeve. Temperatures of first and second parts are increased after first item was installed inside second one. When assembling, at least one edge of case and at least one edge of hollow insertion are positioned in same plane or put apart for distance which doesn't exceed one minimal internal diameter of hollow insertion. Hollow insertion has minimal thickness of wall which at least 1,7 times exceeds minimal thickness of wall of case. Internal part of plunger couple is lapped against first item for at least 16 minutes by using abrasive material. Working surfaces of plunger couple interact with matters being put inside it in such a way that elements, forming as a result of wear of components of couple or as result of collection of content of coupe in pints of its connection, can not practically find themselves in mentioned preparations.

EFFECT: simplicity of assembling; convenient at use.

8 cl, 6 dwg