HANDLING DEVICE FOR A MICRO-INVASIVE SURGICAL INSTRUMENT

• US 20120271347A1
• Filed: 04/10/2012
• Published: 10/25/2012
• Est. Priority Date: 04/11/2011
• Status: Active Grant

• Current Assignee: Karl Storz Se & Co. Kg
• Original Assignee: Karl Storz Se & Co. Kg
• Inventors: Kaercher, Daniel, Stefan, Jochen
• Granted Patent: US 9,387,003 B2
• Time in Patent Office: Days
• US Class Current: 606/205
• CPC Class Codes: A61B 17/29 Forceps for use in minimally invasive surgery
• CPC Class Codes: A61B 17/2909 Handles
• CPC Class Codes: A61B 2017/0046 with a releasable handle; with handle and operating part separable for prosthetic joint-implanting tools A61F2/4603
• CPC Class Codes: A61B 2017/2903 transferring rotary motion
• CPC Class Codes: A61B 2017/2912 transmission of forces to actuating rod or piston
• CPC Class Codes: A61B 2017/292 connection of actuating rod to handle, e.g. ball end in recess
• CPC Class Codes: A61B 2017/2929 with a head rotatable about the longitudinal axis of the shaft
• CPC Class Codes: A61B 2017/293 with means preventing relative rotation between the shaft and the actuating rod

Abstract

A handling device for a micro-invasive surgical instrument includes a gripping device to hold and guide the handling device, a shaft coupling to couple the handling device with a proximal end of a shaft, and a rod coupling that can slide linearly inside the handling device between a distal assembly position and a range of working positions for coupling with a proximal end of a transmission rod that can be slid inside a shaft coupled with the shaft coupling. The slidable rod coupling is configured, in the assembly position, to receive or release a proximal end of a transmission rod and to hold a proximal end of a transmission rod, in the range of working positions. The shaft coupling is configured to block a proximal end of a shaft in a position in which the proximal end of the shaft holds the rod coupling in the range of working positions.

Claims

1. A handling device for a micro-invasive surgical instrument, having:

a gripping device for manual holding and guiding of the handling device;

a shaft coupling for detachable mechanical coupling of the handling device with a proximal end of a shaft;

a rod coupling that can be slid in linear direction in the handling device between a predetermined distal installation position and a predetermined range of working positions, for detachable mechanical coupling with a proximal end of a transmission rod, which can at least either slide or rotate in a shaft that is coupled with the shaft coupling,

such that the slidable rod coupling is configured in order to receive or release, in the predetermined assembly position, a proximal end of a transmission rod and in order, with the rod coupling in the predetermined range of working positions, to hold a proximal end of a transmission rod that is inserted in the rod coupling,

such that the shaft coupling is configured in order to block a proximal end of a shaft that is inserted in the shaft coupling in a predetermined position in which the proximal end of the shaft holds the rod coupling in the predetermined range of working positions.

2. The handling device according to claim 1, in addition having:

a slide bar that can slide in the handling device between a predetermined distal assembly position and a predetermined proximal working position, such that the slide bar is configured and positioned in order to be held in the predetermined proximal working position by a proximal end of a shaft blocked in the shaft coupling.

3. The handling device according to claim 2, wherein the slide bar comprises a pass-through opening, which extends from the proximal to the distal side, such that the cross-section of the pass-through opening constantly varies, at least in portions, from the distal to the proximal side.

4. The handling device according to claim 2, wherein

the slide bar can rotate around an axis with respect to the handling device,

the slide bar is configured in order to transmit torque to a transmission rod coupled with the rod coupling.

5. The handling device according to claim 1, wherein the rod coupling includes a movable gripping clamp to hold a proximal end of a transmission rod, such that the rod coupling is configured in such a way that the gripping clamp, with the rod coupling in a predetermined installation position, can receive or release a proximal end of a transmission rod and can hold a proximal end of a transmission rod, with the rod coupling in the predetermined range of working positions.

6. The handling device according to claim 5, in addition having:

a guide pin and a control groove, such that either the guide pin or the control groove is positioned on the gripping clamp, and such that the guide pin engages in the control groove in order to hold the gripping clamp in various positions depending on the position of the rod coupling.

7. The handling device according to claim 5, further comprising a slide bar that can slide in the handling device between a predetermined distal assembly position and a predetermined proximal working position, such that the slide bar is configured and positioned in order to be held in the predetermined proximal working position by a proximal end of a shaft blocked in the shaft coupling, wherein the surface area on the slide bar, with the slide bar in the predetermined proximal working position, is configured to form a mechanical stop for the gripping clamp of the rod coupling that restricts the predetermined range of working positions.

8. A micro-invasive surgical instrument having:

a handling device according to one of the foregoing claims;

a shaft with a proximal end that is configured for detachable coupling with the handling device, and a distal end that is mechanically connected or connectable with a tool;

a transmission rod to transmit at least either a force or a torque from the handling device to the distal end of the shaft.

9. The micro-invasive surgical instrument according to claim 8, wherein the transmission rod is configured in addition in order to transmit torque from the handling device to the distal end of the shaft.

10. The micro-invasive surgical instrument according to claim 8, wherein the tool and the distal end of the shaft can be detachably mechanically coupled with one another, such that the tool, shaft and transmission rod are configured in such a way that the tool is locked on the distal end of the shaft when the position of the rod coupling coupled with the proximal end of the transmission rod is situated in the predetermined working range.