# US 2014/0371752 A1 · Depth Controllable and Measurable Medical Driver Devices and Methods of Use

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2014/0371752 A1
- Document ID: US20140371752A1
- Status: Published application
- Kind: A1
- Application number: 14/473,299
- Filed: 2014-08-29
- Published: 2014-12-18
- Earliest claimed: 2008-06-26
- Inventors: Wayne Anderson
- Web page: https://patentgrep.com/patent/US20140371752A1

## CPC

- A61B 17/1624: {Drive mechanisms therefor}
- A61B 17/1633: {Sleeves, i.e. non-rotating parts surrounding the bit shaft, e.g. the sleeve forming a single unit with the bit shaft (A61B17/1644 takes precedence)}
- A61B 17/17: Guides {or aligning means} for drills {, mills, pins or wires}
- A61B 90/06: {Measuring instruments not otherwise provided for}
- A61B 17/162: {Chucks or tool parts which are to be held in a chuck}
- A61B 2090/036: {abutting on tissue or skin}
- A61B 2090/062: {penetration depth}
- A61B 2090/066: {for measuring torque}
- A61B 2217/007: with irrigation system
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

Disclosed are devices and methods for creating a bore in bone. The devices and methods described involve driving a rotating bit in an axial direction such that both rotation and linear movement are controlled and measurable. The instrument is useful for a surgeon to control and simultaneously measure the travel of the tool into the bone and prevent injury to surrounding structures.

## Claims

### Claim 1

A medical drilling device comprising:
a housing comprising:
a hand-held portion near a proximal end of the housing;
an engagement portion near a distal end of the housing; and
an actuator;
an axial drive shaft extending through a region of the housing between the proximal and distal ends;
a first drive element coupled to a region of the axial drive shaft;
a rotational drive shaft extending through a region of the housing between the proximal and distal ends;
a second drive element coupled to a region of the rotational drive shaft;
a coupler interchangeably connected to a working tool and the rotational drive shaft, wherein the coupler extends beyond the engagement portion of the housing;
a transducer; and
an electronics package.

### Claim 2 (depends on 1)

The device of claim 1, wherein the first drive element comprises a fixed axial drive motor.

### Claim 3 (depends on 2)

The device of claim 2, wherein the fixed axial drive motor powers the axial drive shaft.

### Claim 4 (depends on 3)

The device of claim 3, wherein the axial drive shaft travels a distance in an axial direction.

### Claim 5 (depends on 4)

The device of claim 4, wherein the axial drive shaft travels axially from a proximal to a distal direction or from a distal to a proximal direction relative to the housing.

### Claim 6 (depends on 4)

The device of claim 4, wherein the distance the axial drive shaft travels is instantaneously measured by the transducer.

### Claim 7 (depends on 6)

The device of claim 6, wherein the electronics package translates the distance the axial drive shaft travels within the housing into a depth measurement of axial movement of the working tool into a bone.

### Claim 8 (depends on 1)

The device of claim 1, wherein the depth the working tool penetrates a bone is pre-programmed by an operator.

### Claim 9 (depends on 1)

The device of claim 1, wherein the axial drive shaft is selected from the group consisting of a jack screw, a ball screw and a lead screw.

### Claim 10 (depends on 1)

The device of claim 1, wherein the second drive element comprises a slidable, rotational drive motor.

### Claim 11 (depends on 10)

The device of claim 10, wherein the axial drive shaft moves the slidable, rotational drive motor in an axial direction.

### Claim 12 (depends on 1)

The device of claim 1, wherein the second drive element coupled to the rotational drive shaft rotates the working tool.

### Claim 13 (depends on 1)

The device of claim 1, wherein the working tool is selected from the group consisting of a drill bit, Kirshner wire, trochar, burr, reamer and a screw driver.

### Claim 14 (depends on 1)

The device of claim 1, further comprising a drill guide assembly comprising a drill guide surrounding the working tool, a forward surface guide and a rear surface guide.

### Claim 15 (depends on 14)

The device of claim 14, wherein a distal region of the forward surface guide couples to the drill guide and a proximal region of the forward surface guide couples to the rear surface guide, and wherein the rear surface guide couples to the axial drive shaft.

### Claim 16 (depends on 15)

The device of claim 15, wherein the drill guide assembly travels axially towards the proximal region of the housing to a retracted state upon actuation of the axial drive shaft.

### Claim 17 (depends on 16)

The device of claim 16, wherein the drill guide assembly in the retracted state reveals a length of the working tool extending beyond a distal region of the drill guide assembly.

### Claim 18 (depends on 1)

The device of claim 1, wherein the transducer comprises a rotary encoder.

### Claim 19 (depends on 18)

The device of claim 18, wherein the rotary encoder is an incremental rotary encoder or an absolute rotary encoder.

### Claim 20 (depends on 19)

The device of claim 19, wherein the rotary encoder is electronic, optical, magnetic or mechanical.