# US 11,897,200 B2 · Rapid wash system for additive manufacturing

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- Number: US 11,897,200 B2
- Document ID: US11897200B2
- Status: Granted
- Kind: B2
- Application number: 17/857,371
- Filed: 2022-07-05
- Published: 2022-10-20
- Granted: 2024-02-13
- Earliest claimed: 2018-02-21
- Assignees: Carbon, Inc.
- Applicants: Carbon, Inc.
- Inventors: Ian Alastair Graham; Kyle Laaker; Florian Markus Barth
- Web page: https://patentgrep.com/patent/US11897200B2

## CPC

- A61C 13/0004: {Computer-assisted sizing or machining of dental prostheses}
- B29C 64/35: Cleaning
- A61C 13/34: Making or working of models, e.g. preliminary castings, trial dentures; Dowel pins [4]
- B29C 64/135: the energy source being concentrated, e.g. scanning lasers or focused light sources
- B29C 64/393: for controlling or regulating additive manufacturing processes
- B33Y 10/00: Processes of additive manufacturing
- B33Y 40/00: Auxiliary operations or equipment, e.g. for material handling
- B33Y 80/00: Products made by additive manufacturing
- A61C 5/77: Methods or devices for making crowns
- B29L 2031/753: {Medical equipment; Accessories therefor (bloodbags, medical bags B29L2031/7148; artificial eyes B29L2011/0008)}
- B29L 2031/7536: {Artificial teeth}
- A61C: DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE (non-driven toothbrushes A46B; {tongue scrapers A61B17/24;} preparations for dentistry A61K6/00; preparations for cleaning the teeth or mouth A61K8/00, A61Q11/00)
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B33Y: ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES

## Abstract

A dental model, includes (a) an upper segment, the upper segment having a shape corresponding to at least a portion of a dental arch of a human patient; (b) a base segment having an external surface and a bottom surface; (c) at least one internal cavity formed in the base segment, and optionally the upper segment, the at least one internal cavity extending through the bottom surface; and (d) at least one wash channel extending from the external surface of the base segment through the base segment and into the at least one internal cavity.

## Claims

### Claim 1

A dental model, comprising
(a) an upper segment, said upper segment having a shape corresponding to at least a portion of a dental arch of a human patient;
(b) a base segment having an external surface and a bottom surface;
(c) at least one internal cavity formed in said base segment, said at least one internal cavity extending through said bottom surface; and
(d) at least one wash channel extending from said external surface of said base segment through said base segment and into said at least one internal cavity,
wherein said at least one wash channel is spaced away from said bottom surface.

### Claim 2 (depends on 1)

The dental model of claim 1, wherein said at least one wash channel comprises a plurality of wash channels.

### Claim 3 (depends on 1)

The dental model of claim 1, wherein said bottom surface is substantially flat and planar.

### Claim 4 (depends on 1)

The dental model of claim 1, further comprising:
(e) an additive manufacturing apparatus carrier platform to which said bottom surface of said dental model is adhered.

### Claim 5

A dental model, comprising
(a) an upper segment, said upper segment having a shape corresponding to at least a portion of a dental arch of a human patient;
(b) a base segment having an external surface and a bottom surface;
(c) at least one internal cavity formed in said base segment, said at least one internal cavity extending through said bottom surface; and
(d) at least one wash channel extending from said external surface of said base segment through said base segment and into said at least one internal cavity,
wherein said at least one wash channel comprises a plurality of intersecting wash channels.

### Claim 6 (depends on 5)

The dental model of claim 5, wherein said plurality of wash channels are defined in said bottom surface.

### Claim 7 (depends on 5)

The dental model of claim 5, wherein said plurality of wash channels are spaced apart from said bottom surface and extend through an intermediate portion of said base segment.