# US 5,343,883 A · Sonic dental device and method

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 5,343,883 A
- Document ID: US5343883A
- Status: Granted
- Kind: A
- Application number: 07/998,378
- Filed: 1992-12-30
- Granted: 1994-09-06
- Earliest claimed: 1992-12-30
- Inventors: Ronald K. Murayama
- Web page: https://patentgrep.com/patent/US5343883A

## CPC

- A61C 15/047: {power-driven}
- A61C 17/20: using ultrasonic waves
- A61C 2204/002: using batteries
- 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)

## Abstract

An electric device which removes supragingival and subgingival plaque and undesirable debris from the interproximal surfaces between teeth is described. This device utilizes a combination of sonic energy and dental floss which is secured between two tines, the tines being part of a flexible fork which is removable from a powered handle which contains batteries and an electric motor. The electric motor, which is coupled to an eccentrically mounted disc on an output shaft, revolves at sonic frequencies which in turn generates sonic energy that is transmitted to the flexible fork which holds the floss. The sonic energy is synchronized and in tune with the natural resonance frequencies of the fork thereby stimulating the resonance action of oscillating vertical and/or elliptical movement of the fork which in turn imparts cleaning energy to and enhances the cleaning properties of the floss.

## Claims

### Claim 1

A device for cleaning teeth comprising
a handle containing a motor which rotates an eccentric counterweight thereby producing vibrational energy in frequencies between 2,000 and 20,000 Hertz, and
a floss-holding member comprising a pair of tines for holding a strand of floss therebetween, the floss-holding member being attached to the handle to allow the vibrational energy produced by the motor to be transmitted to the floss-holding member to cause the floss-holding member to move and thereby the strand of floss to move.

### Claim 2 (depends on 1)

The device of claim 1 wherein the frequency of the vibrational energy is between 8,000 and 17,000 Hertz.

### Claim 3 (depends on 1)

The device of claim 1 wherein the frequency of the vibrational energy induces a resonance action in the floss-holding member to cause the floss to move.

### Claim 4 (depends on 1)

The device of claim 1 wherein the floss-holding member is detachable from the handle and wherein the device includes a different dental cleaning tool which is attachable to the handle in place of the floss-holding member.

### Claim 5 (depends on 4)

The device of claim 4 wherein the different dental cleaning tool comprises a toothbrush.

### Claim 6 (depends on 5)

The device of claim 5 wherein the frequency of the vibrational energy induces a resonance action in the toothbrush to cause the toothbrush to move.

### Claim 7 (depends on 4)

The device of claim 4 wherein the different dental cleaning tool comprises a toothpick-like instrument.

### Claim 8 (depends on 7)

The device of claim 7 wherein the frequency of the vibrational energy induces a resonance action in the toothpick-like instrument to cause the toothpick-like instrument to move.

### Claim 9

A method of cleaning tooth surfaces comprising the steps of
(a) attaching dental floss to a floss-holding member,
(b) inserting the dental floss between two teeth, and
(c) inducing movement in the floss-holding member through rotating an eccentric counterweight thereby producing vibrational energy in frequencies between 2,000 and 20,000 Hertz for directly causing the dental floss to move between the two teeth.

### Claim 10 (depends on 9)

The method of claim 9 comprising the further steps of
(a) removing the floss holding member,
(b) attaching a toothbrush member, and
(c) inducing movement in the toothbrush member through rotating an eccentric counterweight thereby producing vibrational energy in frequencies between 2,000 and 20,000 Hertz for directly causing the toothbrush member to move.

### Claim 11 (depends on 9)

The method of claim 9 comprising the further steps of
(a) removing the floss holding member,
(b) attaching a toothpick member, and
(c) inducing movement in the toothpick member through rotating an eccentric counterweight thereby producing vibrational energy in frequencies between 2,000 and 20,000 Hertz for directly causing the toothbrush member to move.

### Claim 12

A device for cleaning teeth comprising
a handle containing an eccentric counterweight attached to a motor for rotating the counterweight and producing vibrational energy in frequencies between 2,000 and 20,000 Hertz, and
a floss-holding member comprising a pair of tines for holding a strand of floss therebetween, the floss-holding member being detachably attached to the handle for allowing the vibrational energy produced by the counterweight to induce a resonance action in the floss-holding member for moving the strand of floss.

### Claim 13 (depends on 12)

The device of claim 12 wherein a different dental cleaning tool may be attached to the handle in place of the floss-holding member.

### Claim 14 (depends on 13)

The device of claim 13 wherein the different dental cleaning tool comprises a toothbrush member.

### Claim 15 (depends on 14)

The device of claim 14 wherein the frequency of the vibrational energy induces a resonance action in the toothbrush member to cause the toothbrush member to move.

### Claim 16 (depends on 13)

The device of claim 13 wherein the different dental cleaning tool comprises a toothpick member.

### Claim 17 (depends on 16)

The device of claim 16 wherein the frequency of the vibrational energy induces a resonance action in the toothpick member to cause the toothpick member to move.

### Claim 18

A device for cleaning teeth comprising
a handle containing an eccentric counterweight attached to a motor for rotating the counterweight and producing vibrational energy in frequencies between 2,000 and 20,000 Hertz,
a power supply for energizing the motor, and
a floss-holding member comprising a pair of tines for holding a strand of floss therebetween, the floss-holding member being detachably attached to the handle for allowing the vibrational energy produced by the motor to be transmitted to the floss-holding member to cause the floss-holding member to move and thereby the strands of floss to move.

### Claim 19 (depends on 18)

The device of claim 18 further including a different dental cleaning tool which is attachable to the handle in place of the floss-holding member.

### Claim 20 (depends on 19)

The device of claim 19 wherein the different dental cleaning tool comprises a toothbrush member.

### Claim 21 (depends on 20)

The device of claim 20 wherein the frequency of the vibrational energy induces a resonance action in the toothbrush member to cause the toothbrush member to move.

### Claim 22 (depends on 19)

The device of claim 19 wherein the different dental cleaning tool comprises a toothpick member.

### Claim 23 (depends on 22)

The device of claim 22 wherein the frequency of the vibrational energy induces a resonance action in the toothpick member to cause the toothpick member to move.

### Claim 24

A method of cleaning tooth surfaces comprising the steps of
(a) removably attaching a floss-holding member to a handle containing an eccentric counterweight attached to a motor for rotating the counterweight,
(b) attaching dental floss to the floss-holding member,
(c) inserting the dental floss between the teeth,
(d) inducing movement in the floss-holding member through rotating the eccentric counterweight thereby producing vibrational energy in frequencies between 2,000 and 20,000 Hertz for directly causing the dental floss to move between the teeth, and
(e) attaching a different dental cleaning tool to the handle in place of the floss-holding member.

### Claim 25

A method of cleaning tooth surfaces comprising the steps of
(a) removably attaching a floss-holding member to a handle containing an eccentric counterweight attached to a motor for rotating the counterweight,
(b) attaching dental floss to the floss-holding member,
(c) inserting the dental floss between teeth,
(d) inducing movement in the floss-holding member through rotating the eccentric counterweight thereby producing vibrational energy in frequencies between 2,000 and 20,000 Hertz for inducing resonance action in the floss-holding member for causing the dental floss to move between the teeth, and
(e) attaching a different dental cleaning tool to the handle in place of the floss-holding member.

### Claim 26

A method of cleaning tooth surfaces comprising the steps of
(a) attaching dental floss to a floss-holding member,
(b) inserting the dental floss between two teeth, and
(c) inducing movement in the floss-holding member through rotating an eccentric counterweight thereby producing vibrational energy in frequencies between 2,000 and 20,000 Hertz for inducing resonance action in the floss-holding member which causes the dental floss to move between the two teeth.

### Claim 27 (depends on 26)

The method of claim 26 comprising the further steps of
(a) removing the floss holding member,
(b) attaching a toothbrush member, and
(c) inducing movement in the toothbrush member through rotating an eccentric counterweight thereby producing vibrational energy in frequencies between 2,000 and 20,000 Hertz for inducing resonance action in the toothbrush member for causing the toothbrush member to move.

### Claim 28 (depends on 26)

The method of claim 26 comprising the further steps of
(a) removing the floss holding member,
(b) attaching a toothpick member, and
(c) inducing movement in the toothpick member through rotating an eccentric counterweight thereby producing vibrational energy in frequencies between 2,000 and 20,000 Hertz for inducing resonance action in the toothpick member for causing the toothpick member to move.