SURGICAL INSTRUMENT (VERSIONS) AND CONNECTING STRUCTURE FOR ATTACHING ITS END EFFECTOR Russian patent published in 2017 - IPC A61B17/68 

FIELD: medicine.

SUBSTANCE: group of inventions refers to versions of a surgical instrument (CI) and a connecting structure for attaching its end effector (EE). The CI contains EE, a proximal rotary transfer assembly (RTA), a distal RTA, a proximal axial transfer assembly (ATA), a distal ATA, and a connecting structure for simultaneous attachment of the proximal RTA to the distal RTA and the proximal ATA to the distal ATA and their simultaneous disconnection. The proximal RTA is functionally connected to a source of rotary and axial control movements. The proximal RTA is additionally configured to be displaced longitudinally as a result of communicating to it the axial control movements. The distal RTA is functionally connected to the EE to communicate to it the rotary control movements. The proximal ATA is functionally connected to a source of other axial control movements. The distal ATA is functionally connected to the EE to communicate to it the axial control movements. A connecting structure for attaching a EE including a plurality of distal transfer assemblies configured to communicate a plurality of control movements of the EE corresponding to proximal transfer assemblies connected to a driving motions source, wherein the structure comprises a proximal fixing structure (PFS) at the distal end of each proximal transfer assembly, a distal fixing structure (DFS) at the proximal end of each distal transfer assembly, a proximal connecting element (PCE), a distal connecting element (DCE) and the blocking ring (BR). The PCE is configured with the ability of functional support of each proximal transfer assembly so that the PFS is held in the aligned position for the connection. Each DFS is configured with the ability to engage functionally the PFS at the distal end of the corresponding proximal transfer assembly when they are engaged in interlocking with each other. The DCE is functionally connected to the EE and is configured with the ability to functionally support each distal transfer assembly to hold the DFS thereon in an aligned position for connection. The BR has protruding inwardly of the stopper and is movable from the unlocked position, where the distal transfer assemblies can be disconnected from the corresponding proximal, into the locked position, where the distal transfer assemblies are held in interlocking engagement with the corresponding proximal transfer assemblies. The version of the surgical instrument contains the EE, the driving motions source, the first RTA, the second RTA, the first DTA, the second DTA and the connecting structure. The EE is designed to perform surgical operations in response to the driving motions reported to it. The first RTA and the second RTA interact functionally with the driving motions source and receive from it, respectively, the first and second driving motions. The first and second DTA interact functionally with the EE and are configured to receive, respectively, the first and second drive motions from the first and second RTA when they are functionally connected. The connecting structure version comprises a first connecting element, a second connecting element and a BR. The first connecting element functionally supports the first and second RTA. The second connecting element functionally supports the first and second distal transfer assemblies and is made with the ability of axial alignment with the first connecting element so that, in the axial alignment of the first and second connecting elements, the first DTA is aligned axially with the first RTA for functional engagement with it, and the second the DTA is aligned axially with the second RTA for functional engagement with it. The BR is movably mounted on one of the first and second connecting elements, has protruding inwardly of the stopper and is movable between an unlocked position, where the first and second DTA can be disconnected from the first and second RTA, respectively, and the locked position, where the second DTA is held in the functional engagement with the first and second RTA, respectively.

EFFECT: increased manipulation capabilities in surgery.

20 cl, 178 dwg