Bearing system to support a rotatable operating head in an intracorporeal device
First Claim
1. A bearing system for supporting an operating head in an intracorporeal device, the bearing system comprising:
- an internal shaft rotatably mountable to a drive shaft at a proximal end of the internal shaft and for translating rotational torque to the operating head mountable at a distal end of the internal shaft, the internal shaft including a seat;
a static member fixedly mountable to a catheter enclosing the drive shaft, the static member including at least one opening; and
at least one connecting structure, each connecting structure having a contact portion resting through the opening in the static member and being received by the seat of the internal shaft.
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Accused Products
Abstract
A bearing system useful in an intracorporeal device connects an operating head, a rotatable drive shaft and a catheter. The bearing system includes a static member in fixed communication with the distal end of the catheter, an interior shaft that is in rotatable communication with the drive shaft and the operating head, and at least one connecting structure. The static member has at least one opening through which the connecting structure moveably rests against a seat of the interior shaft. The position of the connecting structure within the seat enables the bearing to accept a rotational load of the rotating drive shaft and/or thrust load in the direction of the longitudinal length of the catheter. The connecting structure further retains the internal shaft and static member of the bearing system. A clearance space between the internal shaft and the catheter may permit the interior shaft to tilt relative to the catheter and flexibly orient the operating head at different angles about longitudinal axis of the catheter.
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Citations
24 Claims
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1. A bearing system for supporting an operating head in an intracorporeal device, the bearing system comprising:
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an internal shaft rotatably mountable to a drive shaft at a proximal end of the internal shaft and for translating rotational torque to the operating head mountable at a distal end of the internal shaft, the internal shaft including a seat;
a static member fixedly mountable to a catheter enclosing the drive shaft, the static member including at least one opening; and
at least one connecting structure, each connecting structure having a contact portion resting through the opening in the static member and being received by the seat of the internal shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An intracorporeal device comprising:
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a drive shaft that is rotatable within a catheter;
an operating head; and
a bearing system comprising;
an internal shaft for rotatable mounted to the drive shaft at a proximal end of the internal shaft and for rotatably mounted the operating head at the distal end of the internal shaft, the internal shaft including a seat;
a static member in fixed communication with the catheter; and
at least one connecting structure for resting through the static member, wherein a contact portion of each connecting structure rests through an opening of the static member and is received by the seat. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. An intracorporeal device comprising:
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a catheter;
a drive shaft that is rotatable within the catheter;
a cutting head; and
a bearing system comprising;
an internal shaft fixedly coupled to the drive shaft at a proximal end of the internal shaft and fixedly coupled to the cutting head at the distal end of the internal shaft, the internal shaft including a seat;
a static member fixedly coupled to the catheter, the static member having at least one opening; and
at least one connecting structure, each connecting structure having a contact portion resting through one opening and being received by the seat, wherein the internal shaft is capable of orienting the cutting head about a longitudinal axis of the catheter and communicating rotational torque from the drive shaft to the cutting head. - View Dependent Claims (22, 23, 24)
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Specification