Devices, system, and methods for guiding an operative tool into an interior body region
First Claim
1. A guide device comprising a guide tube defining a guide passage through which an operative tool can be deployed into an interior body region, and a steering assembly comprising a deflecting element coupled to a distal end region of the guide tube to apply a deflecting force to bend the distal end region, an actuator, and a linkage system coupling the actuator to the deflecting element to apply the deflecting force in response to operation of the actuator, the linkage system including a rack and a gear train coupled to the rack, the linkage system being operative to translate rotation of the actuator into linear movement of the rack into rotation of the gear train to apply the deflecting force to the deflecting component.
4 Assignments
0 Petitions
Accused Products
Abstract
A guide device establishes a guide passage through a guide tube, through which an operative tool can be deployed into an interior body region for use. A steering assembly, in use, deflects or bends the distal end region of the guide tube, so that the operative tool can be placed in a desired orientation with respect to tissue. The steering assembly is desirable configured for single handed operation by the clinician. The steering assembly is also desirably configured to provide a mechanical advantage sufficient to translate relatively small increments of clinician control into relatively larger increments of guide tube deflection. In one arrangement, the steering assembly includes a rack and pinion linkage system. In another arrangement, the steering assembly includes a pivoting lever system.
167 Citations
10 Claims
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1. A guide device comprising
a guide tube defining a guide passage through which an operative tool can be deployed into an interior body region, and a steering assembly comprising a deflecting element coupled to a distal end region of the guide tube to apply a deflecting force to bend the distal end region, an actuator, and a linkage system coupling the actuator to the deflecting element to apply the deflecting force in response to operation of the actuator, the linkage system including a rack and a gear train coupled to the rack, the linkage system being operative to translate rotation of the actuator into linear movement of the rack into rotation of the gear train to apply the deflecting force to the deflecting component.
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6. A guide device comprising
a guide tube defining a guide passage through which an operative tool can be deployed into an interior body region, and a steering assembly comprising a deflecting element coupled to a distal end region of the guide tube to apply a deflecting force to bend the distal end region, an actuator, and a linkage system coupling the actuator to the deflecting element to apply the deflecting force in response to operation of the actuator, the linkage system including a slider and a pivoting lever arm coupled to the slider, the linkage system being operative to translate rotation of the actuator into linear movement of the slider into pivotal movement of the lever arm to apply the deflecting force to the deflecting component.
Specification