# US 10,245,063 B2 · Surgical drive apparatus

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- Number: US 10,245,063 B2
- Document ID: US10245063B2
- Status: Granted
- Kind: B2
- Application number: 15/113,262
- Filed: 2015-01-26
- Published: 2017-01-26
- Granted: 2019-04-02
- Earliest claimed: 2014-01-27
- Assignees: Smith & Nephew, Inc.
- Applicants: Smith & Nephew, Inc.
- Inventors: Brian Loreth
- Web page: https://patentgrep.com/patent/US10245063B2

## CPC

- A61B 17/32002: {with continuously rotating, oscillating or reciprocating cutting instruments}
- A61B 2017/00477: {Coupling (A61B2017/0046 takes precedence)}
- A61B 2017/00539: {hydraulically}
- A61B 2017/320032: {Details of the rotating or oscillating shaft, e.g. using a flexible shaft}
- A61B 2090/0813: {Accessories designed for easy sterilising, i.e. re-usable}
- A61B 2217/005: with suction drainage system
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A surgical drive apparatus includes a rotating shaft of a sectioning device and a drive unit having a motor disposed in a motor chamber, in which the motor rotationally couples to the rotating shaft as the rotating shaft extends through an end of the motor chamber. A suction chamber is defined by an interior of a cap, in which the end of the motor chamber is receptive to the cap for sealing engagement with the drive unit, and a rotary tool such as the sectioning device extends through the cap for rotational movement relative to the cap while maintaining fluid communication with the suction chamber. For evacuation of surgical material, an outflow tube is in fluid communication with the suction chamber for providing a fluid path to the suctioning device via the suction chamber. The drive protrudes from the motor chamber which is sealed to allow cleaning and sterilization.

## Claims

### Claim 1

A surgical drive apparatus, comprising:
an external rotating shaft coupled to a resectioning device;
a drive unit having a motor disposed in a motor chamber, the motor rotationally coupled to the external rotating shaft, the external rotating shaft extending through a distal end of the motor chamber, and the distal end of the motor chamber defines an exterior surface of the drive unit;
a cap defining an interior volume, the cap telescoping, over the exterior surface of the drive unit;
a suction chamber defined by the interior volume of the cap and the exterior surface of the drive unit;
the resectioning device coupled to the external rotating shaft and extending through the cap;
the resectioning device configured to rotate relative to the cap and be in fluid communication with the suction chamber, the external rotating shaft configured to provide rotational movement to the resectioning device; and
an outflow tube in fluid communication with the suction chamber by way of the cap, the outflow tube defining a fluid path to the resectioning device via the suction chamber.

### Claim 2 (depends on 1)

The apparatus of claim 1 further comprising a noncircular protrusion on the external rotating shaft configured to convey rotary motion from the motor to the resectioning device.

### Claim 3 (depends on 1)

The apparatus of claim 1 further comprising a sealing ring disposed circularly around the external rotating shaft on the exterior surface of the drive unit, the cap receptive to the resectioning device and configured to create a sealed interior defined by the exterior surface of the drive unit and the interior volume of the cap.

### Claim 4 (depends on 1)

The apparatus of claim 1 further comprising a motor seal disposed around the external rotating shaft between the motor chamber and the suction chamber, the motor seal preventing fluid communication between the motor chamber and the suction chamber.

### Claim 5 (depends on 1)

The apparatus of claim 1 wherein the suction chamber separates the fluid path from the motor chamber.

### Claim 6 (depends on 1)

The apparatus of claim 1 wherein the resectioning device is a blade or burr operable for surgical intervention when rotated.

### Claim 7 (depends on 1)

The apparatus of claim 1 further comprising a pin and groove locking mechanism, including at least one pin disposed on the motor chamber and configured to engage a groove, the groove disposed on the cap.