# US 8,784,341 B2 · Tongue depressor with a force/pressure sensing element

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

- Number: US 8,784,341 B2
- Document ID: US8784341B2
- Status: Granted
- Kind: B2
- Application number: 13/013,001
- Filed: 2011-01-25
- Published: 2011-08-04
- Granted: 2014-07-22
- Earliest claimed: 2010-01-30
- Applicants: Eric Mitchell Friedland; Mark Shaffer Annett
- Inventors: Eric Mitchell Friedland; Mark Shaffer Annett
- Web page: https://patentgrep.com/patent/US8784341B2

## CPC

- A61B 5/4552: {Evaluating soft tissue within the mouth, e.g. gums or tongue}
- A61B 13/00: Instruments for depressing the tongue (combined with illuminating and viewing instruments A61B1/24; combined with saliva removers A61C17/10)
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A body force measurement system for both assessment and therapeutic usage comprising a non-rigid tongue depressor with a force sensing element attached to it and a means of converting the force sensed into quantifiable data. The system provides convenient method for making body force measurements consistent with current clinical practice and without the need for a fixed registration point.

## Claims

### Claim 1

A force sensing tongue depressor comprising:
a. a longitudinal element having a distal end with said distal end being a single flexible flat rectangular plate with a rounded tip
b. a force sensing element located at the distal end of said longitudinal element
c. traces that are used to transmit the information sensed by said force sensing element to measurement equipment
and said force sensing tongue depressor is designed to achieve measurement equilibrium during the measurement of tongue force.

### Claim 2 (depends on 1)

The force sensing tongue depressor of claim 1 wherein the force sensing element is comprised of a force sensing resistor, force-sensing capacitors, strain gauges, liquid filled bladders with a pressure transducer or one-time-use pressure sensitive films.

### Claim 3 (depends on 1)

The force sensing tongue depressor of claim 1 includes measurement equipment capable of measuring and displaying said information sensed.

### Claim 4 (depends on 3)

The force sensing tongue depressor of claim 3 wherein the measurement equipment includes the ability to establish a zero offset against which all force measurements are taken.

### Claim 5 (depends on 3)

The force sensing tongue depressor of claim 3 comprises the ability of the measurement equipment to go to sleep when the longitudinal element is removed from said measurement equipment.

### Claim 6 (depends on 3)

The force sensing tongue depressor of claim 3 further comprises a light capable of illuminating the distal end of the longitudinal element.

### Claim 7 (depends on 3)

The force sensing tongue depressor of claim 3 wherein the measurement equipment further comprises a locking mechanism for the longitudinal element, such that said longitudinal element cannot be unintentionally removed.

### Claim 8 (depends on 3)

The force sensing tongue depressor of claim 3 wherein the measurement equipment further comprises the ability to display peak force measured.

### Claim 9 (depends on 1)

The force sensing tongue depressor of claim 1 wherein said longitudinal element is flexible and specifically designed such that tradeoff between flexibility and tactile feedback is optimized in order to reduce the risk of a therapist influencing the measurement of said information sensed, since decreased flexibility increases the risk that the therapist will influence the measurement of said information sensed while increased flexibility comes at the expense of tactile feedback and the two competing features need to be balanced.

### Claim 10

A force sensing tongue depressor comprising:
a. a longitudinal element having a distal end with said distal end being a single flexible flat rectangular plate with a rounded tip
b. a force sensing element located at the distal end of said longitudinal element
c. said force sensing element is a one-time-use pressure sensitive film
and said force sensing tongue depressor is designed to achieve measurement equilibrium during the measurement of tongue force.