# US 9,040,131 B2 · Diamond window component for a laser tool

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- Number: US 9,040,131 B2
- Document ID: US9040131B2
- Status: Granted
- Kind: B2
- Application number: 13/811,261
- Filed: 2011-07-26
- Published: 2013-09-12
- Granted: 2015-05-26
- Earliest claimed: 2010-07-30
- Assignees: Element Six Limited
- Applicants: Hendrikus Gerardus Maria DeWit; Gerrit Jan Pels
- Inventors: Hendrikus Gerardus Maria DeWit; Gerrit Jan Pels
- Web page: https://patentgrep.com/patent/US9040131B2

## CPC

- A61B 18/201: {with beam delivery through a hollow tube, e.g. forming an articulated arm (through a flexible conduit A61B18/22); Hand-pieces therefor}
- G02B 23/2492: {Arrangements for use in a hostile environment, e.g. a very hot, cold or radioactive environment}
- A61B 18/24: with a catheter (A61B18/26, A61B18/28 take precedence)
- A61B 2018/00095: {high, i.e. heat conducting}
- A61B 2018/2222: {Fibre material or composition}
- Y10T 428/12361: having aperture or cut
- Y10T 428/13: Hollow or container type article [e.g., tube, vase, etc.]
- Y10T 428/131: Glass, ceramic, or sintered, fused, fired, or calcined metal oxide or metal carbide containing [e.g., porcelain, brick, cement, etc.]
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A component for a laser tool, the component comprising: a tubular body defining an internal channel and an aperture; and a window disposed across the aperture and bonded to the tubular body around the aperture, wherein the window is diamond, and wherein the tubular body comprises a material having a coefficient of linear thermal expansion α of 14×10−6 K−1 or less at 20° C. and a thermal conductivity of 60 Wm−1K−1 or more at 20° C.

## Claims

### Claim 1

A component for a laser tool, the component comprising:
a tubular body defining an internal channel and an aperture; and
a window disposed across the aperture and bonded to the tubular body around the aperture,
wherein the window is diamond, and
wherein the tubular body comprises a material having a coefficient of linear thermal expansion α of 12×10−6 K−1 or less at 20° C. and a thermal conductivity of 80 Wm−1 K−1 or more at 20° C.

### Claim 2 (depends on 1)

A component according to claim 1, wherein α is 10×10−6 K−1 or less.

### Claim 3 (depends on 1)

A component according to claim 1, wherein the thermal conductivity is 100 Wm−1 K−1 or more.

### Claim 4 (depends on 1)

A component according to claim 1, wherein the tubular body is formed of at least 50% of said material.

### Claim 5 (depends on 1)

A component according to claim 1, wherein said material is a metal, an alloy, a ceramic, or a composite material.

### Claim 6 (depends on 1)

A component according to claim 1, wherein said material comprises one or more of molybdenum, chromium, tungsten, rhodium, ruthenium, diamond, silicon carbide (SiC), tungsten carbide (WC), aluminium nitride (AlN), titanium zirconium molybdenium (TZM), tungsten nickel iron (WNiFe), and tungsten nickel copper (WNiCu).

### Claim 7 (depends on 1)

A component according to claim 1, wherein the tubular body is formed of molybdenum.

### Claim 8 (depends on 1)

A component according to claim 1, wherein the tubular body is coated with a biocompatible material.

### Claim 9 (depends on 1)

A component according to claim 1, wherein the diamond window is free of antireflective coating in an area across the aperture.

### Claim 10 (depends on 1)

A component according to claim 1, wherein the diamond window is provided with a metallization coating forming at least a portion of a bond between the diamond window and the tubular body.

### Claim 11 (depends on 10)

A component according to claim 10, wherein the metallization coating comprises a layer of carbide forming material bonded to the diamond window, an inert barrier layer, and a metal layer soldered or brazed to the tubular body.

### Claim 12 (depends on 11)

A component according to claim 11, wherein the carbide forming material is titanium, the inert barrier layer is platinum, and the metal layer is gold.

### Claim 13 (depends on 10)

A component according to claim 10, wherein the bond further comprises a braze joint between the metallization coating and the tubular body.

### Claim 14 (depends on 13)

A component according to claim 13, wherein the braze joint comprises gold.

### Claim 15 (depends on 1)

A component according to claim 1, wherein the aperture is in a side wall of the tubular body.

### Claim 16 (depends on 1)

A component according to claim 1, wherein α is 8×10−6 K−1 or less.

### Claim 17 (depends on 1)

A component according to claim 1, wherein α is 6×10−6 K−1 or less.

### Claim 18 (depends on 1)

A component according to claim 1, wherein α is 4×10−6 K−1 or less.

### Claim 19 (depends on 1)

A component according to claim 1, wherein the thermal conductivity is 120 Wm−1 K−1 or more.

### Claim 20 (depends on 1)

A component according to claim 1, wherein the thermal conductivity is 140 Wm−1 K−1 or more.

### Claim 21 (depends on 1)

A component according to claim 1, wherein the tubular body is formed of at least 70% of said material.

### Claim 22 (depends on 1)

A component according to claim 1, wherein the tubular body is formed of at least 80% of said material.

### Claim 23 (depends on 1)

A component according to claim 1, wherein the tubular body is formed of at least 90% of said material.

### Claim 24 (depends on 1)

A component according to claim 1, wherein the tubular body is formed of at least 95% of said material.

### Claim 25 (depends on 13)

A component according to claim 13, wherein the braze joint comprises copper and silver.