WO2013166634A1

WO2013166634A1 - Lead core for retrograde tracheal intubation

Info

Publication number: WO2013166634A1
Application number: PCT/CN2012/001272
Authority: WO
Inventors: 陈志扬; 陈瑞光; 刘瑾
Original assignee: Chen Zhiyang; Chen Ruiguang; Liu Jin
Priority date: 2012-05-10
Filing date: 2012-09-17
Publication date: 2013-11-14
Also published as: CN103386161A

Abstract

A lead core for retrograde tracheal intubation consists of a front hemisphere (1), a truncated cone (2), a cylinder (3), a rear hemisphere (4) and an inner bore (5) from the front end to the back end. All sections of the lead core have a diameter of 0.5-2mm to allow a guidewire to pass through. The diameter of the front hemisphere (1) is 2-5mm. The front cross section of the truncated cone (2) has the same diameter with the front hemisphere (1), and the rear cross section of the truncated cone (2) has the same diameter with the cylinder (3). The length of the truncated cone (2) is 0.5-4cm. The cylinder (3) has a 3-9mm diameter and a 38-45cm length. The rear hemisphere (4) has the same diameter with the cylinder (3). The most front of the front hemisphere (1) of the lead core being set as 0 point, the cylinder (3) are marked with the scales of 33cm, 34cm, 35cm, 36cm, 37cm and 38cm.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a guide core for retrograde endotracheal intubation, from front to back, respectively, "front hemisphere", "round table", "cylinder", and "post hemisphere". ", there is a hole. In the retrograde tracheal intubation, first insert the guiding core into the tracheal tube to expose the front hemisphere and the round table of the guiding core, and then insert the guiding wire from the inner hole of the front hemisphere of the guiding core, insert it from the inner hole of the rear hemisphere, and tighten The guiding wire is inserted along the guiding wire to guide the guiding core and the tracheal tube, so as to avoid the obstacle of the meeting and the glottis, smoothly reach the tracheal wall, complete the retrograde tracheal intubation, and avoid damage to the respiratory tract.

First, the background technology

At present, various methods for difficult tracheal intubation are not guaranteed to be successful for all patients, because tracheal catheters are most vulnerable to epiglottis and glottis in difficult tracheal intubation. Clinically, when the anesthesiologist reverses the tracheal intubation, the guide wire is inserted into the trachea from the outside of the trachea, and then through the mouth or nostril, and then into the tracheal tube. When the tracheal tube is inserted, the guide wire is thin (0.99). The diameter of the tracheal tube is very large (about 3-5-9mm). The guide wire tends to stick to the wall of the endotracheal tube. The slope of the front end of the catheter is often blocked by the epiglottis and vocal cords, which makes the intubation difficult. From the front end to the rear end, the guide core is "front hemisphere", "round table", "cylinder", "post hemisphere", and has an inner hole and a jacketed tracheal tube. When the guiding core and the endotracheal tube are inserted along the guiding wire, the guiding core "closes tightly" the guiding wire. When the glottic door is passed through, the guiding core gradually squeezes the vocal cord from the thicker and thicker, which is free from the vocal cord and the epiglottis; The inner diameter is greater than the outer diameter of the lead core 0. 5-lmm, "tightly hug" the guide core. The guiding core is finally blocked by the tracheal wall, and then the tracheal tube reaches the tracheal wall, the guiding core and the guiding wire are removed, and the tracheal tube can be slightly advanced to complete the tracheal intubation.

Second, the content of the invention

In order to overcome the major drawbacks of the existing retrograde tracheal intubation when the tracheal tube bevel is susceptible to obstruction and glottis leading to intubation difficulties, we have designed this guide. The inner diameter is adapted to the outer diameter of the guide wire. The smaller "front hemisphere" at the front end and the "round table" from the thin to the thick can hold the guide wire forward tightly; the "cylindrical" outer diameter of the guide core Adapted to the inner diameter of the tracheal tube so that the lead is not blocked when inserted; the "back hemisphere" of the lead prevents the lead from being blocked at the joint through the endotracheal tube.

The technical solution adopted by the present invention to solve the technical problem is: The invention is designed as a guiding core for retrograde tracheal intubation, which is "front hemisphere", "round table" and "cylinder" from the front end to the rear end respectively. "The latter hemisphere" has an inner hole. The inner diameter of each section of the core is 0. 5- 2mra (through the guide wire); the diameter of the "front hemisphere" is 2-5, and the diameter of the front section of the "round table" is equal to the diameter of the "front hemisphere", the rear section The diameter of the cylinder is equal to the diameter of the cylinder, the length is 0. 5-4cm _; the diameter of the "cylinder" is 3-9, and the length is 38-45cm. The diameter of the "post hemisphere" is equal to the diameter of the cylinder. The front end of the "front hemisphere" of the lead core is 0 points, and the "column" has the scales of 33cm, 34cm, 35cm, 36cm, 37cm, 38cm. When the guiding core passes through the glottis along the guiding wire, starting from the smaller "front hemisphere", the gradually thickening "round table", the thick "cylinder" and the endotracheal tube enter the trachea in turn, and the guiding core can be tightly held. Staying "guide wire, tracheal tube" can hold the "guide core tightly", making the push process smooth.

The invention has the beneficial effects that the guiding core and the tracheal tube can be inserted into the guiding wire after the guiding wire is pierced from the oral cavity or the nasal cavity, and the guiding core and the tracheal tube can be easily inserted, and is suitable for any difficult airway cannula. . It is only necessary to make a puncture on the tracheal wall, and the damage is small. It requires less equipment and is inexpensive, and is suitable for medical units of any level. The operation is simple, the technical requirements are not high, and the experience of the anesthesiologist is not high, so it has a high promotion value.

Fourth, the description of the drawings

The invention will now be further described with reference to the drawings and embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view of a pencil type retrograde tracheal intubation guide core of the present invention.

In the figure 1. The first hemisphere 2. The round table 3. The cylinder 4. The rear hemisphere 5. The inner hole

V. Specific implementation methods

In Figure 1, when the retrograde tracheal intubation is performed, the airway surface is anesthetized first, and the patient can be directly induced by general anesthesia. Inserted from the trachea into the patient's trachea, through the glottis, through the mouth or nostrils, leaving 3cm outside the trachea, showing the Ocm scale point, fixing the outer part of the guide wire of the guide wire, try to straighten the guide wire, first the trachea The catheter is inserted into the guiding core, so that the leading hemisphere and the round table of the guiding core are exposed from the front end of the tracheal tube, the guiding wire is inserted from the inner hole of the "front hemisphere" of the guiding core, and the inner hole of the "rear hemisphere" is inserted, and the steel wire is tightened. After inserting the guiding core and the tracheal tube, after feeling that the guiding core is blocked by the tracheal wall (also determined by B-ultrasound), advance the tracheal tube to the tracheal wall, remove the guiding core and the guiding wire, and then slightly advance the trachea forward. The catheter can complete the tracheal intubation.

Claims

Claim

1. A guide core for retrograde endotracheal intubation, from front to back, respectively, "front hemisphere", "round table", "cylinder", "rear hemisphere", with an inner hole.

2. A lead core for retrograde endotracheal intubation according to claim 1, wherein: the inner diameter of each section of the guiding core is 0.5-2 mm (through the guiding wire); the diameter of the "front hemisphere" Is 2-5mm, the diameter of the front section of the "round table" is equal to the diameter of the "front hemisphere", the diameter of the rear section is equal to the diameter of the "cylinder", the length is 0.5-4cm; the diameter of the "cylinder" is 3-9mm, the length is 38-45cm, the diameter of the "post hemisphere" is equal to the diameter of the "cylinder". The front end of the front hemisphere of the lead core is 0 points, and the scale on the cylinder is 33cm, 34cm, 35cm, 36cm, 37cm. 38cm.