DIRECTION CONTROL DEVICE FOR
RELATED APPLICATIONS 5
This application is a continuation-in-part of my corresponding application Ser. No. 607,270, filed Aug. 25, 1975, now abandoned.
BACKGROUND OF THE INVENTION w
During surgery, surgical recovery and in other critical medical situations in which the respiratory capability of a patient is diminished, breathing-assist through a tube inserted into the trachea is often desirable. According to present medical practice, the lower end of an 15 endotracheal tube is inserted through the throat and into the trachea by an anesthesiologist employing a laryngoscope or by medical personnel trained specifically in intubation methodology. The endotracheal tube is specifically designed for insertion into the trachea or 20 windpipe and must be flexible for the purpose of easy manipulation and tapered at one end to facilitate insertion between the vocal cords. Even though the endotracheal tube is specially designed for easy manipulation through the throat into the trachea, such insertion of the 25 tube into the trachea normally requires the services of a skilled anesthesiologist, since without direct visualization of the vocal cords, the tube tends to enter the esophagus because of the posterior anatomical location of the entry to the esophagus relative to the entry to the 30 trachea and the curvature of the wall of the oropharynx.
Emergency situations frequently arise in which the insertion of an endotracheal tube is vital and life saving. In such situations it would be advantageous for an un- 35 skilled physician, nurse, or paramedic to be able to insert the endotracheal tube into the patient's trachea for breathing-assist.
Accordingly, it is an object of my present invention to provide a safe endotracheal intubation device which 40 can be operatively inserted by a relatively unskilled technician, nurse, or physician.
It is also an object of my present invention to provide an endotracheal tube, the lower tip of which may be displaced for easy manipulation and installation into the 45 trachea by an external magnetic device exerting an attractive force upon the tip of an endotracheal tube in which a magnetic substance is incorporated.
A prime object of my present invention is to provide a flexible magnetically responsive endotracheal intuba- 50 tion tube tip.
It is a further object of my invention to provide a method for intubation of an endotracheal tube.
SUMMARY OF THE INVENTION 55
The present invention provides a means for magnetically displacing the lower end of an endotracheal tube so that it can be readily inserted into a patient's trachea by a relatively unskilled physician, nurse, or technician. The displacement means requires the location of a ferro- 60 magnetic substance adjacent the lower tip of the endotracheal tube and either permanent or an electromganetic device which is applied externally at that portion of the patient's neck or throat to create a magnetic field for displacement of the tube tip anteriorly to permit 65 entry of the tip into the trachea as the endotracheal tube is lowered down through the patient's throat. The manner in which the tip of the endotracheal tube is rendered
magnetically responsive to the electromagnetic device is extremely important to the successful use of this intubation device.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic view of a patient with an endotracheal tube in accordance with the present invention, inserted into the proximal end of the trachea;
FIG. 2 is an enlarged cross-sectional view of the endotracheal tube shown in FIG. 1, taken on line 2—2 of FIG. 1.
FIG. 3 is a sectional view taken on line 3—3 of FIG.
FIG. 4 is an enlarged cross-sectional view of the tip of an endotracheal tube in accordance with a modification of my present invention;
FIG. 5 is a sectional view of the apparatus shown in FIG. 4, taken on line 5—5 of FIG. 4;
FIG. 6 is an enlarged cross-sectional view of a modified form of the tube tip used with my present invention;
FIG. 7 shows a modified form of my present invention showing the external magnet device attached to a strap;
FIG. 8 shows schematically, an electromagnetic circuit which may be used with the external magnet shown in FIGS. 1 and 7.
FIG. 9 shows schematically, a modified external magnetic device adapted for use in accordance with an embodiment of my present invention.
FIG. 10 is an enlarged sectional view showing a modified form of my present invention;
FIG. 11 is an enlarged cross-sectional view of a further modification of the tube tip of my present invention; and
FIG. 12 is a sectional view taken on line 12—12 of FIG. 11.
DESCRIPTION OF THE PREFERRED
An endotracheal tube of the type used with my present invention is shown in FIG. 1 and consists of a hollow, flexible, plastic tube 10 with the insertion end tapered and bevelled for effective insertion into a human trachea through various anatomical obstacles, as discussed below. References herein to the tapered end 12 of the tube 10 refers to either the end 12 being tapered or beveled or both. The other end of the tubular member 10 shown in FIG. 1 is equipped with an adaptor 14 which is connecticle to breathing-assist equipment and which also provides a handle or grip for manipulation of the endotracheal tube through the patient's throat.
FIG. 1 shows tube 10 operatively positioned in a patient's trachea 16 for breathing-assist. The endotracheal tube 10 is equipped with a conventional inflatable seal 18 near the tapered end of the endotracheal tube which is inflatable with air through a tube syringe 20. The inflatable seal 18 is inflated with air after intubaion, to seal to exterior of the endotracheal tube 10 within the trachea and prevent passage of gastrointestinal contents, blood, mucus, etc. into the trachea around the tube as it holds the tracheal orifice open. The seal 18 is inflated by the externally positioned syringe bulb 22. Similar endotracheal tube structure is illustrated in U.S. Pat. No. 3,565,079.
The tube 10 is inserted into the patient's throat 24, as shown, and would tend to enter the esophagus 26 because of the posterior location of the esophagus opening