DENTAL HAND INSTRUMENT AND HEAD HOUSING THEREFOR

• US 20160074134A1
• Filed: 08/31/2015
• Published: 03/17/2016
• Est. Priority Date: 09/12/2014
• Status: Active Grant

• Current Assignee: Kavo Dental GMBH (Envista Holdings Corporation)
• Original Assignee: Kaltenbach & Voigt GmbH (Danaher Corporation)
• Inventors: Kuhn, Bernhard, Classen, Thomas
• Granted Patent: US 10,456,216 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61C 1/0061 Air and water supply systems; Valves specially adapted therefor A61C1/052 takes precedence; rinsing or air-blowing devices A61C17/02
• CPC Class Codes: A61C 1/0076 Sterilising operating fluids or fluid supply elements such as supply lines, filters sterilisation of liquid substances in general A61L2/18
• CPC Class Codes: A61C 1/12 Angle hand-pieces
• CPC Class Codes: A61C 1/141 in an angled handpiece

Abstract

In the case of a dental hand instrument having a grip sleeve and also a head housing arranged at the front end of the grip sleeve for receiving or holding a treatment instrument, the head housing has a substantially cylindrical hollow space which is connected by way of at least one connecting bore to a connection region pointing to the grip sleeve, wherein the connecting bore is coupled, at its end facing the grip sleeve, to a media line extending through the grip sleeve, and wherein the inner wall region of the head housing enclosing the hollow space has a recess into which the connecting bore opens.

Claims

1. A dental hand instrument, comprising:

a grip sleeve;

a head housing arranged at the front end of the grip sleeve, the head housing configured to receive or hold a treatment instrument,

wherein the head housing has a substantially cylindrical hollow space connected by way of at least one connecting bore to a connection region pointing to the grip sleeve, and

wherein the at least one connecting bore is coupled, at its end facing the grip sleeve, to a media line extending through the grip sleeve; and

at least one recess within an inner wall region of the head housing enclosing the hollow space and into which the at least one connecting bore opens.

2. A dental hand instrument of claim 1, wherein the at least one connecting bore is aligned so as to be inclined with respect to a plane running perpendicularly to a longitudinal axis of the hollow space.

3. A dental hand instrument of claim 1, wherein the recess is formed so as to be sickle-shaped.

4. A dental hand instrument of claim 1, wherein the recess is formed so as to be annular or partially annular, extending in particular over the whole extent of the inner wall region.

5. A dental hand instrument of claim 1, further comprising an insert piece arranged in the hollow space of the head housing, wherein the insert piece has a media channel communicating with the recess.

6. A dental hand instrument of claim 5, wherein the height of the recess corresponds to the height of the associated media channel.

7. A dental hand instrument of claim 1, wherein the head housing has a plurality of connecting bores, wherein each connecting bore opens into the recess formed on the inner wall region of the head housing.

8. A head housing for a dental hand instrument for receiving or holding a treatment instrument, the head housing comprising:

a substantially cylindrical hollow space connected by way of at least one connecting bore to a connection region pointing to a grip sleeve of the hand instrument, and

an inner wall region enclosing the hollow space and comprising a recess into which the at least one connecting bore opens.