Prophy angle with translating paddle system and method for metered dispensing of a prophylaxis medium with tactile and aural feedback

• US 10,206,758 B2
• Filed: 12/18/2008
• Issued: 02/19/2019
• Est. Priority Date: 03/24/2008
• Status: Active Grant

• Current Assignee: Bradley A. Randolph
• Original Assignee: Bradley A. Randolph
• Inventors: Randolph, Bradley A.
• Primary Examiner(s): Lewis, Ralph
• Application Number:
  US12/337,899
• Publication Number:
  US 20090098505A1
• Time in Patent Office: 3,715 Days
• Field of Search: 433 80, 433 82, 433 87
• CPC Class Codes: A46B 2200/01 Disposable brush A46B11/0003, A46B5/0004 take precedence
• CPC Class Codes: A46B 9/005 where the brushing material is not made of bristles, e.g. sponge, rubber or paper
• CPC Class Codes: A61C 1/12 Angle hand-pieces
• CPC Class Codes: A61C 17/005 Devices for dental prophylaxis
• CPC Class Codes: A61C 17/227 with reservoirs, e.g. for toothpaste

Abstract

A disposable prophy angle with an accessible and replaceable internal collapsible prophylaxis bladder and a push button and plunger/paddle combination to force a metered amount of prophylaxis medium into the prophy angle while providing audible and/or tactile feedback.

Claims

1. An apparatus for providing dentifrice into a tooth-cleaning means comprising:

a longitudinal section having a longitudinal axis with a drive member disposed therein which is substantially parallel with the longitudinal axis;

a head adjacent to said longitudinal section, said head having a tooth-engaging means which is oriented substantially perpendicular to the longitudinal axis and is configured to engage a tooth and remove matter from the tooth when the drive member is driven and the tooth-engaging means is in contact with the tooth;

said longitudinal section having an exterior longitudinal section surface and sized and configured to be held and manipulated by a human hand and further comprising;

a removable lid configured to be disposed on said exterior longitudinal section surface;

a variable volume structure is disposed inside a fixed volume cavity defined by said exterior longitudinal section surface and said removable lid;

said removable lid having a slot therein extending above the variable volume structure which is sized and configured to permit visual inspection of the variable volume structure during operation;

a passageway configured to transport prophylaxis medium from the variable volume structure to the tooth-engaging means;

finger-engaging member configured for transferring a longitudinal prophylaxis media expelling force from a finger to the variable volume structure;

a plurality of exterior lid surface deviations in said removable lid;

said finger-engaging member configured to be manually pushed longitudinally toward the head while causing the variable volume structure to decrease in volume and thereby expel prophylaxis medium into said tooth-engaging means in a metered manner, depending upon an extent of a distance of travel of the finger-engaging member;

wherein the variable volume structure is a means for converting a longitudinal force into an increase in pressure to force prophylaxis medium into the tooth-engaging means;

wherein the means for converting a longitudinal force is a collapsible bladder;

wherein the tooth-engaging means is a prophy cup;

wherein the plurality of exterior lid surface deviations and the finger-engaging member further cooperate to simultaneously provide to a user of the apparatus;

tactile notification of passage of the finger engaging member beyond one of said plurality of exterior lid surface deviations; and

aural notification of passage of the finger engaging member beyond one of said plurality of exterior lid surface deviations.

2. The apparatus of claim 1 wherein the passageway configured to transport prophylaxis medium has a neck section which is substantially parallel to the longitudinal axis and a head section which is substantially perpendicular to the longitudinal axis, and where the head section coaxially extends through a central portion of a gear head disposed in the head and configured to transfer motion of the drive member into motion of the tooth-engaging means.

3. The apparatus of claim 2 wherein the finger-engaging member slides through a slot in the top side of the removable lid, where the slot is disposed above the collapsible bladder and permits visual inspection of the prophylaxis material when the collapsible bladder is made of a transparent material.

4. The apparatus of claim 3 wherein the finger-engaging member makes a clicking sound when being advanced forward past one of the plurality of exterior lid surface deviations.

5. An apparatus for providing dentifrice into a tooth-cleaning means comprising:

means for housing a drive shaft with a longitudinal axis and gears to cause a tooth-polishing means to turn about an axis which is substantially perpendicular to the longitudinal axis;

said means for housing configured to be held and manipulated by a human hand and comprising an exterior surface;

a removable lid configured to be disposed on said exterior surface;

a variable volume structure is disposed inside a fixed volume cavity defined by said exterior surface and said removable lid;

said removable lid having a slot therein extending above the variable volume structure which is sized and configured to permit visual inspection of the variable volume structure during operation;

a passageway configured to transport dentifrice from the variable volume structure to the tooth polishing means; and

means for simultaneously;

1. causing a decrease in volume and thereby expelling dentifrice into said tooth polishing means;

2. producing an aural notification of passage of the finger engaging member beyond one of said plurality of protuberances;

3. producing a tactile notification of passage of the finger engaging member beyond one of said plurality of protuberances; and

4. providing a graduated visual notification of expelling dentifrice.

6. An apparatus for providing dentifrice into a tooth-cleaning means comprising:

a longitudinal section having a longitudinal axis with a drive member disposed therein which is substantially parallel with the longitudinal axis;

a head adjacent to said longitudinal section, said head having a prophy cup which is oriented substantially perpendicular to the longitudinal axis and is configured to engage a tooth and remove matter from the tooth when the drive member is driven and the prophy cup is in contact with the tooth;

said longitudinal section having an exterior surface and sized and configured to be held and manipulated by a human hand and further comprising;

a removable lid configured to be disposed on said exterior surface;

a variable volume structure is disposed inside a fixed volume cavity defined by said exterior surface and said removable lid;

said removable lid having a slot therein extending above the variable volume structure which is sized and configured to permit visual inspection of the variable volume structure during operation;

a passageway configured to transport prophylaxis medium from the variable volume structure to the prophy cup;

finger-engaging member configured for transferring a longitudinal prophylaxis media expelling force from a finger to the variable volume structure;

a plurality of exterior surface deviations in said removable lid;

said finger-engaging member configured to be manually pushed longitudinally toward the head while causing the variable volume structure to decrease in volume and thereby expel prophylaxis medium into said prophy cup in a metered manner, depending upon an extent of a distance of travel of the finger-engaging member;

wherein the variable volume structure is sized, located and configured for converting a longitudinal force into an increase in pressure to force prophylaxis medium into the prophy cup;

wherein the variable volume structure comprises a collapsible bladder;

wherein the plurality of exterior surface deviations are a plurality of protuberances on a top side of the removable lid;

wherein the plurality of protuberances are configured to contact the finger-engaging member and to limit backward travel of the finger-engaging member;

wherein the plurality of protuberances and the finger-engaging member further cooperate to simultaneously provide to a user of the apparatus;

tactile notification of passage of the finger engaging member beyond one of said plurality of protuberances; and

aural notification of passage of the finger engaging member beyond one of said plurality of protuberances.

7. The apparatus of claim 6 further wherein said removable lid has a latch member thereon which is configured to mate with a void in said exterior surface.

8. The apparatus of claim 6 wherein the passageway configured to transport prophylaxis medium has a neck section which is substantially parallel to the longitudinal axis and a head section which is substantially perpendicular to the longitudinal axis, and where the head section coaxially extends through a central portion of a gear head disposed in the head and configured to transfer motion of the drive member into motion of the prophy cup.

9. The apparatus of claim 8 wherein the finger-engaging member slides through a slot in the top side of the exterior surface, where the slot is disposed above the collapsible bladder and permits visual inspection of the prophylaxis material when the collapsible bladder is made of a transparent material.

10. The apparatus of claim 9 wherein the finger-engaging member makes a clicking sound when being advanced forward past one of the plurality of protuberances.