# US 9,433,432 B2 · Surgical cutting instrument

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- Number: US 9,433,432 B2
- Document ID: US9433432B2
- Status: Granted
- Kind: B2
- Application number: 14/386,066
- Filed: 2013-03-20
- Published: 2015-02-19
- Granted: 2016-09-06
- Earliest claimed: 2012-03-21
- Assignees: Olympus Winter & Ibe GmbH
- Applicants: Olympus Winter & Ibe GmbH
- Inventors: Uwe Schoeler; Dido Armin Zweibrueck; Andre Scheel
- Web page: https://patentgrep.com/patent/US9433432B2

## CPC

- A61B 17/320016: {Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes (A61B10/0233, A61B17/29, A61B17/3207 take precedence)}
- A61B 17/32002: {with continuously rotating, oscillating or reciprocating cutting instruments}
- A61B 17/3205: Excision instruments
- A61B 2017/00845: {of moving parts with respect to each other}
- A61B 2017/0088: {ceramic}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A surgical milling instrument, comprising two tubular cutters arranged one inside another, each of which has a cylindrical shaft tube, an integrally formed distal end piece in a hollow hemispherical shape, and a cutting window, wherein the outer tubular cutter is non-rotatably mounted on a main body and the inner tubular cutter is mounted in a rotationally driven manner thereon, is characterized in that at least one of the end pieces, in a hole surrounding the axis of the associated shaft tube, has an insert plate connected on the edge thereof to the edge of the hole.

## Claims

### Claim 1

A surgical cutting instrument comprising two tubular cutters arranged one inside another, each of which having a cylindrical shaft tube, a distal end piece in a hollow hemispherical shape integrally formed with the cylindrical shaft tube and a cutting window, wherein the outer tubular cutter is non-rotatably mounted on a main body and the inner tubular cutter is mounted in a rotationally driven way thereon, wherein at least one of the end pieces has, in a hole surrounding the axis of the associated shaft tube, an insert plate connected on the edge thereof to the edge of the hole.

### Claim 2 (depends on 1)

The surgical cutting instrument according to claim 1, wherein the insert plate is formed projecting with the center surface thereof lying towards the other end piece over the sphere surface.

### Claim 3 (depends on 2)

The surgical cutting instrument according to claim 2, wherein the inner surface of the insert plate is formed as flat.

### Claim 4 (depends on 3)

The surgical cutting instrument according to claim 3, wherein the outer surface of the insert plate is formed as part of the spherical surface.

### Claim 5 (depends on 3)

The surgical cutting instrument according to claim 3, wherein the insert plates of both tubular cutters are formed identically.

### Claim 6 (depends on 1)

The surgical cutting instrument according to claim 1, wherein the hole is formed as a drilled hole arranged concentric to the axis of the associated shaft tube.

### Claim 7 (depends on 1)

A tubular cutter of a cutting instrument according to claim 1, having a cylindrical shaft tube, a distal end piece in a hollow hemispherical shape integrally formed with the cylindrical shaft tube, wherein the end piece has, in a hole surrounding the axis of the associated shaft tube, an insert plate connected on the edge thereof to the edge of the hole.

### Claim 8 (depends on 7)

A method for producing a tubular cutter according to claim 7, wherein one end of the shaft tube is indented to a hemispherical shape until an opening remains, which opening is smaller than the area of the hole, the hole is then introduced and the insert plate is inserted in said hole and is subsequently fixed at the edge.