# US 7,744,529 B2 · Laryngoscope blade

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- Number: US 7,744,529 B2
- Document ID: US7744529B2
- Status: Granted
- Kind: B2
- Application number: 10/777,293
- Filed: 2004-02-12
- Published: 2005-08-18
- Granted: 2010-06-29
- Earliest claimed: 2004-02-12
- Assignees: Carl Kaoru Sakamoto
- Inventors: Carl Kaoru Sakamoto
- Web page: https://patentgrep.com/patent/US7744529B2

## CPC

- A61B 1/267: for the respiratory tract, e.g. laryngoscopes or bronchoscopes
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

An improved laryngoscope. In one embodiment a laryngoscope blade includes a main blade portion and blade tip and a blade base. The main blade portion has a posterior surface, a distal end and proximal end. The blade tip extends from the distal end of the main blade portion. The blade tip also has a width that is flared wider in a first direction than a width of the main blade portion. The blade tip is further positioned at a select angle with relation to the posterior surface of the main blade portion. The blade base coupled to the proximal end of the blade.

## Claims

### Claim 1

A laryngoscope blade, the blade comprising:
a main blade portion having a posterior surface, a distal end and a proximal end, the posterior surface having a length that is generally straight from the proximal end to the distal end;
a blade tip extending from the distal end of the main blade portion, the blade tip further extending beyond a width of the main blade portion from a first side of the main blade portion, the blade tip further extending from the posterior surface of the main blade portion at a select angle;
a first tongue displacement plate extending from a second side of the main blade portion at generally a right angle, the first tongue displacement portion further extending along a select length of the main blade portion proximate the distal end of the main blade portion;
a second tongue displacement plate extending from the first displacement plate at generally a right angle, the second displacement plate further extending from the first displacement plate in a direction that is generally away from the main blade portion, the second tongue displacement plate further having a surface that is positioned in an opposite direction as the posterior surface of the main blade, the surface of the second tongue displacement plate forming a plane that is generally parallel with an axis formed by the length of the posterior surface; and
a blade base coupled to the proximal end of the main blade portion, wherein the generally straight length of the posterior surface extends from the blade base at generally a right angle.

### Claim 2 (depends on 1)

The blade of claim 1, wherein the first tongue displacement plate has a length that is less than ½ the length of the main blade portion.

### Claim 3 (depends on 1)

The blade of claim 1, wherein the select angle between the blade tip and the posterior surface is an obtuse angle.

### Claim 4 (depends on 1)

The blade of claim 1, wherein the select angle between the blade tip and the posterior surface is approximately 165 degrees.

### Claim 5 (depends on 1)

The blade of claim 1, further comprising:
the blade base has a channel; and
a blade connection portion coupled to the proximal end of the main blade portion, the blade connection portion received in the channel in the blade base.