US7479147B2 — Rotational atherectomy device

Claim 1

Independent Claim 75 words

A rotational medical device, comprising: an elongate flexible tubular body, having a proximal end and a distal end; a rotatable element extending through the body; a rotatable cutter at the distal end of the body and connected to the rotatable element; a control on the proximal end of the body; and a sensor on the device in electrical communication with an indicator, for indicating resistance to rotation of either the rotatable element or rotatable cutter.

Claim 2

Dependent Claim 75 words

A rotational medical device, comprising: an elongate flexible tubular body, having a proximal end and a distal end; a rotatable element extending through the body; a rotatable cutter at the distal end of the body and connected to the rotatable element; a control on the proximal end of the body; and a sensor on the device in electrical communication with an indicator, for indicating resistance to rotation of either the rotatable element or rotatable cutter.

Claim 3

Dependent Claim 18 words

A rotational medical device as in claim 1 , wherein the indicator comprises a source of tactile feedback.

Claim 4

Dependent Claim 17 words

A rotational medical device as in claim 1 , wherein the indicator comprises at least one light.

Claim 5

Dependent Claim 27 words

A rotational medical device as in claim 1 further comprising a reverse direction control such that the rotatable cutter can be rotating in either of two directions.

Claim 6

Dependent Claim 18 words

A rotational medical device as in claim 1 , wherein the rotatable cutter comprises a generally helical thread.

Claim 7

Dependent Claim 21 words

A rotational medical device as in claim 1 , wherein the rotatable element is positioned entirely inside of the tubular body.

Claim 8

Dependent Claim 26 words

A rotational medical device as in claim 1 , further comprising an annular space between the rotatable element and an interior wall of the tubular body.

Claim 9

Dependent Claim 26 words

A rotational medical device as in claim 1 , wherein the control unit is attached to the proximal end of the body by a rotatable hub.

Claim 10

Dependent Claim 26 words

A rotational medical device as in claim 1 , further comprising a reinforcing sleeve oyer at least a portion of the proximal end of the body.

Claim 11

Dependent Claim 22 words

A rotatable medical device as in claim 1 , wherein the rotatable element and the cutter can translate relative to the body.

Claim 12

Dependent Claim 143 words

A rotational medical device, comprising: an elongate flexible tubular body, having a proximal end and a distal end; a rotatable element extending through and spaced radially inwardly from the body; an aspiration lumen extending through the tubular body in between an interior wall of the elongate flexible tubular body and exterior wall of the rotatable element; a rotatable cutter at the distal end of the body, connected to the rotatable element; and a control on the proximal end of the body; a sensor on the device in electrical communication with an indicator, for indicating resistance to rotation of either the rotatable element or rotatable cutter; wherein the tubular body has a first cross-sectional area, and the aspiration lumen has a second cross-sectional area, and the cross-sectional area of the aspiration lumen is at least 35% of the cross-sectional area of the tubular body.

Claim 13

Dependent Claim 143 words

A rotational medical device, comprising: an elongate flexible tubular body, having a proximal end and a distal end; a rotatable element extending through and spaced radially inwardly from the body; an aspiration lumen extending through the tubular body in between an interior wall of the elongate flexible tubular body and exterior wall of the rotatable element; a rotatable cutter at the distal end of the body, connected to the rotatable element; and a control on the proximal end of the body; a sensor on the device in electrical communication with an indicator, for indicating resistance to rotation of either the rotatable element or rotatable cutter; wherein the tubular body has a first cross-sectional area, and the aspiration lumen has a second cross-sectional area, and the cross-sectional area of the aspiration lumen is at least 35% of the cross-sectional area of the tubular body.

Claim 14

Dependent Claim 35 words

The rotational medical device of claim 11 , wherein the aspiration lumen is defined by and located between the interior wall of the elongate flexible tubular body and the exterior wall of the rotatable element.

Claim 15

Dependent Claim 75 words

A rotational medical device, comprising: an elongate flexible tubular body, having a proximal end and an open distal end; a rotatable element extending through the body; a rotatable cutter disposed within the tubular body at the distal end of the body and connected to the rotatable element; a control on the proximal end of the body; and an axially extending annular aspiration channel defined by and located between the rotatable element and the tubular body.

Claim 16

Dependent Claim 75 words

A rotational medical device, comprising: an elongate flexible tubular body, having a proximal end and an open distal end; a rotatable element extending through the body; a rotatable cutter disposed within the tubular body at the distal end of the body and connected to the rotatable element; a control on the proximal end of the body; and an axially extending annular aspiration channel defined by and located between the rotatable element and the tubular body.

Claim 17

Dependent Claim 22 words

A rotational medical device as in claim 13 , further comprising an indicator for indicating changes in flow through the aspiration channel.

Claim 18

Dependent Claim 43 words

A rotational medical device as in claim 13 , wherein the control is mounted on a handle configured for one hand operation of the rotational medical device, and the control activates both rotation of the rotatable cutter and an application of a vacuum.

Claim 19

Dependent Claim 39 words

A rotational medical device as in claim 15 , wherein the control is activateable by single finger operation, and, upon actuation thereof, initiates the application of the vacuum within the tubular body before initiating rotation of the rotatable tip.

Claim 20

Dependent Claim 29 words

A rotational medical device as in claim 16 , further comprising a shipping lock-out wire adapted to hold the control in a vacuum activated position and rotation deactivated position.

Claim 21

Dependent Claim 28 words

The rotational medical device of claim 13 further comprising a cutter housing positioned at the distal end of the tubular body and within which the cutter is disposed.

Claim 22

Dependent Claim 125 words

A rotational medical device, comprising: an elongate flexible tubular body, having a proximal end and a distal end; a rotatable element extending through the body; a rotatable cutter at the distal end of the body and connected to a motor through the rotatable element; a control on the proximal end of the body; and a sensor on the device in electrical communication with a motor control circuit, wherein the motor control circuit is capable of receiving a signal from the sensor for indicating an operating condition based upon resistance to rotation of either the rotatable element or rotatable cutter and wherein the motor control circuit is capable of disengaging the motor rotation from the cutter in the event the operating condition indicates an overload condition.

Claim 23

Dependent Claim 125 words

A rotational medical device, comprising: an elongate flexible tubular body, having a proximal end and a distal end; a rotatable element extending through the body; a rotatable cutter at the distal end of the body and connected to a motor through the rotatable element; a control on the proximal end of the body; and a sensor on the device in electrical communication with a motor control circuit, wherein the motor control circuit is capable of receiving a signal from the sensor for indicating an operating condition based upon resistance to rotation of either the rotatable element or rotatable cutter and wherein the motor control circuit is capable of disengaging the motor rotation from the cutter in the event the operating condition indicates an overload condition.

Claim 24

Dependent Claim 19 words

A rotational medical device as in claim 19 further comprising at least one indicator for indicating the operating condition.

Claim 25

Dependent Claim 16 words

A rotational medical device as in claim 20 , wherein the indicator includes a visual indicator.

Claim 26

Dependent Claim 16 words

A rotational medical device as in claim 20 , wherein the indicator includes an auditory indicator.

Claim 27

Dependent Claim 16 words

A rotational medical device as in claim 20 , wherein the indicator includes a tactile indicator.

Claim 28

Dependent Claim 76 words

A rotational medical device comprising an elongated tubular body, the elongated tubular body defining an aspiration channel, a cutter disposed at a distal end of the tubular body, the cutter rotatable relative to the tubular body, a control disposed at the proximal end of the tubular body, the control including a connecting hub, the connecting hub coupling the tubular body to the control such that the tubular body may rotate relative to the control during operation.

Claim 29

Dependent Claim 76 words

A rotational medical device comprising an elongated tubular body, the elongated tubular body defining an aspiration channel, a cutter disposed at a distal end of the tubular body, the cutter rotatable relative to the tubular body, a control disposed at the proximal end of the tubular body, the control including a connecting hub, the connecting hub coupling the tubular body to the control such that the tubular body may rotate relative to the control during operation.

Claim 30

Dependent Claim 67 words

A rotational medical device as in claim 24 further comprising a motor housed within the control and a flexible drive element transmitting power from the motor to the cutter, wherein the flexible drive element extends through the hub such that the flexible drive element may rotate relative to the hub and tubular body while still allowing the tubular body and hub to rotate relative to the control.

Claim 31

Dependent Claim 60 words

A rotational medical device as in claim 25 further comprising a drive coupling, the drive coupling comprising a sleeve and a plate which slides within the sleeve and engages the sleeve to transmit rotation between the sleeve and the plate, wherein at least one of the sleeve and plate shields the motor from fluids which may leak into the control.

Claim 32

Dependent Claim 50 words

A rotational medical device comprising a cutter, an elongated tubular body connecting the cutter to a control, the control having a drive motor, the drive motor transmitting rotation to the cutter through at least a flexible drive shaft, the cutter capable of axial displacement relative to the control during operation.

Claim 33

Dependent Claim 50 words

A rotational medical device comprising a cutter, an elongated tubular body connecting the cutter to a control, the control having a drive motor, the drive motor transmitting rotation to the cutter through at least a flexible drive shaft, the cutter capable of axial displacement relative to the control during operation.

Claim 34

Dependent Claim 21 words

A rotational medical device as in claim 27 , wherein the cutter is capable of axial displacement relative to the motor.

Claim 35

Dependent Claim 42 words

A rotational medical device as in claim 27 further comprising a transfer shaft that extends through the motor and that is coupled to an output of the motor such that the transfer shaft is capable of axial displacement relative to the motor.

Claim 36

Dependent Claim 41 words

A rotational medical device as in claim 27 , further comprising a transfer shaft that transfers rotation from the motor to the flexible drive shaft and wherein the flexible drive shaft is capable of axial displacement relative to the transfer shaft.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	2012-01-20	2012-07-21	2013-01-20	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2016-01-20	2016-07-21	2017-01-20	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2020-01-20	2020-07-21	2021-01-20	$7700.00	Window Closed / Lapsed

Rotational atherectomy device

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