Angled hose connection for dental handpiece

Inactive Publication Date: 2008-01-03
DENTSPLY SIRONA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0012] Another advantage of the present invention is that side load exerted on the coupler is reduced. This, in turn, reduces the load exerted on the coupler seals in the cylindrical portion that isolate the water, air and optional electricity, which results in longer seal life.
[0013] Another advantage of the present invention is that the reduced load exerted on the coupler seals reduces the friction on the

Problems solved by technology

The forces from the weight and flexural resistance of the hose are thus applied at a point well behind the area in which the dental professional grips the handpiece, resulting in a moment arm that increases the strain on the dental profession

Method used

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  • Angled hose connection for dental handpiece
  • Angled hose connection for dental handpiece
  • Angled hose connection for dental handpiece

Examples

Experimental program
Comparison scheme
Effect test

Example

[0032] A second embodiment of the present invention is depicted in FIG. 6. This embodiment utilizes a coupling 100 intermediate the quick disconnect 26 and the handpiece 10. Coupling 100 is a separate independent piece. Coupling 100 has a first end 102 and a second end 104, being connected to the handpiece assembly on a first end 102 and to a quick disconnect 26 on a second end 104, there being an angular transition at a preselected angle between the coupling first end 102 and coupling second end 104. The second end 104 of coupling made in accordance to ISO Standard 9168 for assembly to quick disconnect 26, also conforming to ISO Standard 9168. Thus, the second end of coupling 104 is configured substantially identically to the supply-end portion of coupler 22 depicted in FIG. 2, while the first end of coupling 102 is configured substantially identically to the first end 54 of the quick disconnect of FIG. 4.

[0033] The quick disconnect assembles to the second end 104 of coupling 100,...

Example

[0035] In a third embodiment of the invention, a quick disconnect has a first end for attachment to a handpiece assembly and a second end for attachment to a flexible supply 24. The quick disconnect includes an angle between the first end and a second end. The first end and the second end of the quick disconnect otherwise conform to ISO Standard 9168. Again, the angle can be movable from moved from a first fixed angle to a second fixed angle, or the angle in the quick disconnect can be articulating, the angles varying from about 10° to 90°, preferably varying from 10° to 45°. One of the distinctions between the first embodiment and the second embodiments, discussed above, and this third embodiment is that the distance between the gripping surface and the effective load point is moved back further from the gripping surface so that the moment, while reduced, is not reduced as much as in the first and second embodiment, since the distance, while shortened, is not reduced as much as in ...

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PUM

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Abstract

A dental handpiece having a distal end including an attachment for assembly of a removable workpiece and a handpiece body intermediate a proximal end and the distal end. The handpiece extends in a substantially axial direction. A coupler is included having a cylinder portion and a supply-end portion, the cylinder portion being assembled into the handpiece extending in the axial direction toward the distal end. The cylinder portion includes at least one seal that interfaces with an interior of the body so as to isolate a portion of the body interior into at least one distinct chamber. The supply-end portion of the coupler extends from the proximal end of the handpiece body at an angle from the axis. The supply-end portion also includes a plurality of outlets, the at least one distinct chamber in fluid communication with one of the outlets of the plurality of outlets.

Description

FIELD OF THE INVENTION [0001] The present invention relates generally to a dental handpiece having an angled coupling between the handpiece body and the flexible supply connection. BACKGROUND OF THE INVENTION [0002] Dental handpieces typically include a handpiece body, a coupler and a flexible supply connection. The handpiece includes a proximal end, a distal end and a body intermediate the proximal and distal end, the proximal end, the distal end and the handpiece body oriented in a substantially axial direction. An outer surface of the body is molded to be an ergonomic gripping area is so that the dental professional can comfortably grip the handpiece. The distal end has a head onto which a removable workpiece, such as a burr or a prophy-angle is attached. A coupler is assembled axially to the handpiece body, the coupler having a supply-end portion and a cylinder portion projecting from the supply-end portion. The cylinder portion of the coupler, which includes one or more diametr...

Claims

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Application Information

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IPC IPC(8): A61C1/08
CPCA61C1/18
Inventor PAPANEK, THOMASNOVAK, GENEHEIL, DONBEANE, BRET
Owner DENTSPLY SIRONA INC
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