# US 2019/0167277 A1 · Semicylindrical osteotomy device

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- Number: US 2019/0167277 A1
- Document ID: US20190167277A1
- Status: Published application
- Kind: A1
- Application number: 16/321,044
- Filed: 2017-08-10
- Published: 2019-06-06
- Earliest claimed: 2016-08-10
- Assignees: Inje University Industry-Academic Cooperation Foundation
- Applicants: Inje University Industry-Academic Cooperation Foundation
- Inventors: Sang Won MOON; Sung Hyuk MOON
- Web page: https://patentgrep.com/patent/US20190167277A1

## CPC

- A61B 17/1637: {Hollow drills or saws producing a curved cut, e.g. cylindrical (A61B10/025, A61B17/1695 take precedence)}
- A61B 17/149: {Chain, wire or band saws}
- A61B 17/151: {for corrective osteotomy}
- A61B 17/1626: {Control means; Display units}
- A61B 17/1628: {Motors; Power supplies}
- A61B 17/1662: {for particular parts of the body}
- A61B 17/1739: {specially adapted for particular parts of the body}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

Provided is a semi-cylindrical osteotomy device including: a guide portion where a tibia accommodating space in which a tibia is accommodated is formed; a cutter portion moving in the tibia accommodating space and cutting the tibia while moving along an inner circumferential surface of the guide portion; and a driving unit driving the cutter portion. According to the semi-cylindrical osteotomy device, stability of a surgery is increased by inserting the guide portion by approaching a side surface of the tibia to minimize an exposed portion of a bone. Also, a wire saw moves along a slit of the guide portion, and thus a cut bone surface of a semi-cylindrical shape is easily and quickly formed.

## Claims

### Claim 1

A semi-cylindrical osteotomy device comprising:
a guide portion where a tibia accommodating space in which a tibia is accommodated is formed;
a cutter portion moving in the tibia accommodating space and cutting the tibia while moving along an inner circumferential surface of the guide portion; and
a driving unit driving the cutter portion.

### Claim 2 (depends on 1)

The semi-cylindrical osteotomy device of claim 1, wherein the guide portion includes a center portion curvedly formed.

### Claim 3 (depends on 1)

The semi-cylindrical osteotomy device of claim 1, wherein the cutter portion moves along the inner circumferential surface of the guide portion to cut the tibia in a curved surface.

### Claim 4 (depends on 2)

The semi-cylindrical osteotomy device of claim 2, wherein the guide portion comprises:
a pipe where an internal space is formed to accommodate the cutter portion, and arranged along an outer circumference of the tibia; and
a slit formed along an inner circumference of the pipe.

### Claim 5 (depends on 4)

The semi-cylindrical osteotomy device of claim 4, wherein the cutter portion is configured in a wire saw, is arranged along the outer circumference of the tibia by being provided along an internal space of the guide portion, and cuts the tibia in a curved surface by moving through the slit.

### Claim 6 (depends on 4)

The semi-cylindrical osteotomy device of claim 4, wherein the guide portion comprises:
an anterior guide pipe arranged at an anterior portion of the tibia, including a center portion forming a semi-circular shape by being curved, and including an anterior slit along a length direction at a side contacting the tibia;
a posterior guide pipe arranged at a posterior portion of the tibia, including a center portion forming a semi-circular shape by being curved, and including a posterior slit along a length direction at a side contacting the tibia; and
a connecting unit provided at one ends of the anterior guide pipe and posterior guide pipe to connect the anterior guide pipe and the posterior guide pipe.

### Claim 7 (depends on 6)

The semi-cylindrical osteotomy device of claim 6, wherein the cutter portion is configured in a wire saw, is arranged along the outer circumference of the tibia by being provided along inner spaces of the anterior guide pipe and posterior guide pipe, and cuts the tibia in a curved surface by moving along the anterior slit and the posterior slit from other ends to the one ends of the anterior guide pipe and posterior guide pipe.

### Claim 8 (depends on 5)

The semi-cylindrical osteotomy device of claim 5, wherein the driving unit comprises:
a rotating shaft where both ends of the wire saw are fixed and wound around;
a driving motor controlling the rotating shaft; and
a controller controlling the driving motor.

### Claim 9 (depends on 5)

The semi-cylindrical osteotomy device of claim 5, wherein the driving unit comprises:
a body provided at one side of the guide portion and where a space is formed; and
a moving body to which both ends of the wire saw are fixed and slidably moves by being provided inside the body.