Endotracheal tube assembly and related method

• US 5,421,325 A
• Filed: 12/28/1993
• Issued: 06/06/1995
• Est. Priority Date: 04/30/1992
• Status: Expired due to Fees

• Current Assignee: James Z. Cinberg, Peter J. Wilk
• Original Assignee: James Z. Cinberg, Peter J. Wilk
• Inventors: Wilk, Peter J., Cinberg, James Z.
• Primary Examiner(s): Burr, Edgar S.
• Assistant Examiner(s): Lewis, Aaron J.
• Application Number:
  US08/174,398
• Time in Patent Office: 525 Days
• Field of Search: 128/200.26, 128/207.14, 128/207.15, 604/99, 604/100
• US Class Current: 128/200.26
• CPC Class Codes: A61M 16/04 Tracheal tubes catheters in general A61M25/00
• CPC Class Codes: A61M 16/0429 with non-integrated distal obturators
• CPC Class Codes: A61M 2016/0027 pressure meter
• CPC Class Codes: A61M 2016/0413 with detectors of CO2 in exhaled gases

Abstract

An endotracheal assembly comprises an endotracheal tube, a malleable obturator inside the tube for enabling a placement of a distal end of the tube into a patient'"'"'s trachea, and a pressure-sensitive detector mounted to the obturator at a distal end thereof for detecting air or gas pressure above a predetermined threshold exerted against a distal end of the obturator upon placement of the tube with the obturator into the patient. Upon an initial insertion of the tube and the obturator into a patient'"'"'s trachea and possible manipulation of the tube and the obturator to effectuate a placement of the tube, a compressive pressure is exerted externally on the patient'"'"'s chest. The compressive pressure forces air out of the patient'"'"'s lungs and, if the tube and obturator assembly is properly placed, effectuates a change in the condition of the pressure sensor. That change in condition indicates that pressure above a predetermined level was exerted against the detector element.

Claims

1. An endotracheal assembly comprising:

an endotracheal tube;

a malleable obturator inside said tube for enabling a placement of a distal end of said tube into a patient'"'"'s trachea; and

pressure-sensitive detector means mounted to said obturator at a distal end thereof for detecting air or gas pressure above a predetermined threshold exerted against a distal end of said obturator upon placement of said tube with said obturator into the patient.

2. The assembly defined in claim 1 wherein said detector means is removably attached to said distal end of said obturator.

3. The assembly defined in claim 2, further comprising means for releasably locking said detector means to said distal end of said obturator.

4. The assembly defined in claim 1 wherein said tube, said obturator and said detector means are sterile, further comprising a removable disposable wrapper enclosing said tube and said obturator for purposes of maintaining said tube, said obturator and said detector means in a sterile condition.

5. A device for determining proper placement of an endotracheal tube, comprising:

a malleable obturator insertable inside an endotracheal tube; and

pressure-sensitive detector means mounted to said obturator at a distal end thereof for detecting air or gas pressure above a predetermined threshold exerted against a distal end of said obturator upon placement of an endotracheal tube, with said obturator disposed therein, into the patient.

6. The device defined in claim 5 wherein said detector means is removably attached to the distal end of said obturator.

7. The device defined in claim 6, further comprising means for releasably locking said detector means to the distal end of said obturator.

8. The device defined in claim 5, further comprising means for releasably locking said detector means to said obturator.

9. The device defined in claim 5 wherein said obturator and said detector means are sterile, further comprising a removable disposable wrapper enclosing said obturator and said detector means for purposes of maintaining said obturator and said detector means in a sterile condition.

10. A method for placing an endotracheal tube, comprising the steps of:

initially inserting into a patient'"'"'s trachea an endotracheal tube longitudinally traversed at least partially by an obturator made of a malleable material;

manipulating said tube and said obturator to effectuate a placement of said tube;

upon a placement of said tube with said obturator, exerting compressive pressure externally on the patient'"'"'s chest;

upon exertion of compressive pressure on the patient'"'"'s chest, withdrawing said obturator; and

inspecting a pressure measurement element mounted to a distal end of said obturator to determine the whether said distal end of said obturator has been exposed to a gaseous pressure in excess of a predetermined level, thereby determining that a distal end of said tube is properly placed in the patient.

11. The method defined in claim 10, further comprising the steps of:

removing said tube upon determining, via a condition of said pressure measurement element, that said tube is improperly placed; and

again inserting into the patient'"'"'s trachea an endotracheal tube longitudinally traversed at least partially by an obturator made of a malleable material.

12. The method defined in claim 11 wherein the obturator utilized in said step of again inserting is a different obturator than that obturator used in said step of initially inserting.

13. The method defined in claim 11 wherein the endotracheal tube utilized in said step of again inserting is the same tube used in said step of initially inserting.

14. The method defined in claim 13, further comprising the step of leaving said endotracheal tube inside the patient upon determining, via said condition of said pressure measurement element, that said tube is properly placed.

15. The method defined in claim 11 wherein the endotracheal tube and obturator utilized in said step of again inserting are the same tube and obturator used in said step of initially inserting.