Dental applicator

Patent metadata

Field	Value
Publication number	US-11051911-B2
Application number	US-201815745154-A
Country	US
Kind code	B2
Filing date	Jul 14, 2016
Priority date	Jul 17, 2015
Publication date	Jul 6, 2021
Grant date	Jul 6, 2021

Abstract

The invention relates to a dental applicator comprising an applicator housing and a plunger body guided movably in said applicator housing, wherein the applicator housing comprises a connection for detachably mounting a cannula in a pressure-resistant manner, said cannula comprising a connection body and a cannula tube that is rigidly connected in or on said connection body, and the applicator housing ( 12 ) and/or plunger body ( 14 ) having a receiving device ( 22 ) for at least partially receiving a bendable cannula tube ( 20 ).

First claim

The invention claimed is:

1. A dental applicator comprising: an applicator housing and a plunger body guided movably in said applicator housing, wherein the applicator housing comprises a connection for detachably mounting a bendable cannula in a pressure-resistant manner, said cannula comprising a connection body and a cannula tube that is rigidly connected in or on said connection body, wherein the applicator housing has a recess for receiving the bendable cannula tube, wherein the recess is a radially extending recess formed as a blind hole on an annular reinforcement member of the applicator housing located proximate an entry of the applicator housing.

2. The dental applicator in accordance with claim 1 ,
wherein the cannula tube is insertable into the radially extending recess.

3. The dental applicator in accordance with claim 1 ,
wherein the recess is provided with a depth stop and
wherein the cannula tube is insertable into the recess until the cannula tube abuts against the depth stop.

4. The dental applicator in accordance with claim 1 ,
wherein the recess has a depth which amounts to at least twice a diameter of the cannula tube.

5. The dental applicator in accordance with claim 4 ,
wherein the diameter of the cannula tube provides a clearance of at least 50 μm inside the recess, and
wherein the recess has an inside diameter which is at least 50 μm larger than the circumference of the cannula tube.

6. The dental applicator in accordance with claim 1 ,
wherein the recess is provided with at least two bending stops which are spaced apart from each other, which bending stops are offset towards each other by 180°.

7. The dental applicator in accordance with claim 1 ,
wherein the recess is circular and has a straight course.

8. The dental applicator in accordance with claim 1 ,
wherein the recess is provided, on an outward-pointing end, with at least one curved end surface which extends in a circularly curved fashion around the outward-pointing end.

9. The dental applicator in accordance with claim 8 ,
wherein the curved end surface is provided with a radius which corresponds to at least the minimally admissible bending radius of the cannula tube.

10. The dental applicator in accordance with claim 8 ,
wherein the curved end surface is provided on the levelling-off margin of the radius, with at least one pre-defined ramp angle.

11. The dental applicator in accordance with claim 1
wherein the recess enters into the plunger body in a fashion coaxially with the plunger body.

12. The dental applicator in accordance with claim 1 ,
wherein the recess extends radially away from a shank of the plunger body or from the applicator housing, adjacently to the respectively associated handle plate, and
wherein on the handle plate which is adjacent to the recess, angle markings are attached which signal the bending angle of the cannula tube during the bending of the end of the cannula tube which is inserted into the recess.

13. The dental applicator in accordance with claim 1 ,
wherein the recess has a depth which is at least three times a diameter of the cannula tube.

14. The dental applicator in accordance with claim 1 ,
wherein the recess has a depth which is no more than ten times a diameter of the cannula tube.

Assignees

• Ivoclar Vivadent Ag

Inventors

• Müller Frank

Classifications

• A61M2005/341

  angularly adjustable or angled away from the axis of the injector · CPC title

• B05C17/00593

  Hand tools of the syringe type · CPC title

• A61M5/31511

  Piston or piston-rod constructions, e.g. connection of piston with piston-rod (A61M5/5066 takes precedence) · CPC title

• A61C5/62 Primary

  Applicators, e.g. syringes or guns · CPC title

• A61M5/34

  Constructions for connecting the needle {, e.g. to syringe nozzle or needle hub (connecting catheter tubes to hubs A61M25/0014)} · CPC title