Control mechanism for steerable rod
AssigneeVexim
InventorsGuillaume Dutertre, Jean-Baptiste Zerlauth, Jean-Francois Oglaza, Yves-Alain Ratron
Life of this patent
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Abstract
The present invention relates to a control mechanism for controlling a rod (210) having at least one key, the control mechanism comprising a handle comprising a sliding ring (131), a sliding shaft (132) and a drive shaft (133), each extending along a longitudinal axis (101) and comprising a central opening; and a friction reduction cannula (110) comprising an opening configured to receive the rod (210). The present invention also relates to a steerable device and a steerable system comprising the control mechanism according to the invention.
Claims16
A control mechanism for controlling a rod having a preformed bend and at least one key, the control mechanism comprising:
- a handle comprising a sliding ring, a sliding shaft and a drive shaft comprising an internal surface defining at least one longitudinal groove or keyseat configured to engage the at least one key of the rod, each of the sliding ring, the sliding shaft, and the drive shaft extending along a longitudinal axis, wherein the sliding ring is threadedly connected to the sliding shaft;
- blocking means which prevent axial rotation between the drive shaft and the sliding shaft and which allow the drive shaft to slide within the sliding shaft;
- connecting means which prevent axial displacement between the drive shaft and the sliding ring and which allow axial rotation between the drive shaft and the sliding ring;
- and
- a friction reduction cannula configured to receive the rod, wherein the friction reduction cannula is secured to the sliding shaft or to the drive shaft.
A control mechanism for controlling a rod having a preformed bend, the control mechanism comprising:
- a handle comprising a sliding ring, a sliding shaft and a drive shaft, each of the sliding ring, the sliding shaft, and the drive shaft extending along a longitudinal axis, wherein the sliding ring is threadedly connected to the sliding shaft;
- wherein one of the drive shaft and the sliding shaft comprises at least one keyseat and the other one of the drive shaft and the sliding shaft comprises a key configured to slidably move within the at least one keyseat such that axial rotation is blocked between the drive shaft and the sliding shaft and slidable movement of the drive shaft relative to the sliding shaft is allowed;
- a bearing operably connecting the drive shaft and the sliding ring and configured to prevent axial displacement between the drive shaft and the sliding ring and allow axial rotation between the drive shaft and the sliding ring;
- and
- a friction reduction cannula configured to receive the rod;
- wherein the friction reduction cannula is secured to the sliding shaft or to the drive shaft.
Dependencies are inferred from the claim text.