Image-guided laryngoscope for tracheal intubation

• US 5,951,461 A
• Filed: 12/05/1997
• Issued: 09/14/1999
• Est. Priority Date: 12/20/1996
• Status: Expired due to Fees

• Current Assignee: Glenn Zaw-Mon, Tin Nyo
• Original Assignee: Glenn Zaw-Mon, Tin Nyo
• Inventors: Nyo, Tin, Zaw-Mon, Glenn
• Primary Examiner(s): LEUBECKER, JOHN P
• Application Number:
  US08/986,205
• Time in Patent Office: 648 Days
• Field of Search: 600/117, 600/118, 600/120, 600/160, 600/183, 600/185, 600/188, 600/194, 348/65
• US Class Current: 600/118
• CPC Class Codes: A61B 1/00149 using articulated arms
• CPC Class Codes: A61B 1/042 characterised by a proximal camera, e.g. a CCD camera
• CPC Class Codes: A61B 1/06 with illuminating arrangements
• CPC Class Codes: A61B 1/2676 Bronchoscopes

Abstract

The invention relates to endotracheal intubation by an endoscope of the type that is automatically guidable in three dimensions in response to control signals. The endoscope has fiber optics and a TV camera for internal viewing. The TV image signals are processed to determine the geometrical shape of body parts near the tip of the endoscope. When the program determines that the vocal cords are in view, it guides the tip of the endoscope toward it and then into the trachea by sending control signals to the mechanical endoscope motion devices.

Claims

1. A system for intubation of a person having internal body parts, the system comprising:

(a) an endoscope having a tip and including optical means to view the internal body parts;

(b) a camera, coupled to said endoscope, producing electronic image signals;

(c) mechanical means, responsive to control signals, for moving said endoscope tip in three dimensions; and

(d) processing means, inputting said image signals and outputting said control signals, for guiding said endoscope tip to a predetermined three-dimensional spatial position in relation to a predetermined one of the body parts, said processing means comprising

analyzing means for analyzing said image signals to determine a distinctive geometrical shape of a viewed body part;

determining means for determining whether the distinctive geometrical shape is that of the predetermined body part; and

moving means for moving the tip to the predetermined spatial position.

2. The system according to claim 1, wherein said predetermined body part includes an orifice and wherein the processing means is for guiding said tip through the orifice.

3. The system according to claim 2, wherein the predetermined body part is the person'"'"'s rima glottidis and said processing means is for guiding the tip into the person'"'"'s trachea to a position which is a predetermined distance beyond the rima glottidis.

4. The system according to claim 1, wherein said processing means includes a programmable digital computer and a program adapted to be run on said computer, and said program includes said determining means.

5. The system according to claim 4, wherein said program further includes said analyzing means.

6. The system according to claim 4, wherein said program further includes said moving means.

7. The system according to claim 1, wherein the determining means includes means for comparing a digitized image of the predetermined body part to stored data.

8. The system according to claim 1, wherein the determining means includes means for performing mathematical analysis.

9. A method for intubation of a person using a system in accordance with claim 1, comprising:

placing the endoscope tip at the entrance of the body part to be intubated;

engaging said camera, processing means and mechanical means to automatically guide the tip of the endoscope to a predetermined spatial position in relation to a predetermined body part.

10. A method according to claim 9, wherein said predetermined body part is the person'"'"'s rima glottidis and said placing step comprises placing the endoscope tip in the person'"'"'s mouth near the entrance to the trachea.

11. A computer program embodied on a computer-readable storage medium to control a system comprising:

(a) an endoscope having a tip and including optical means to view internal body parts;

(b) a camera, coupled to said endoscope, producing electronic image signals;

(c) mechanical means, responsive to control signals, for moving said endoscope tip in three dimensions; and

(d) a processor;

wherein the program inputs said image signals and outputs said control signals, for guiding said endoscope tip to a predetermined three-dimensional spatial position of said tip in relation to a predetermined body part, by

analyzing said image signals to determine a distinctive geometrical shape of a viewed body part;

determining whether the distinctive geometrical shape is that of the predetermined body part; and

outputting control signals to direct said mechanical means to move said tip to the predetermined spatial position.

12. The computer storage medium according to claim 11, wherein said program further includes said analyzing means.

13. The computer storage medium according to claim 11, wherein said program further includes said moving means.