CN100502970C - A double balloon tracheal tube - Google Patents

Abstract

A sleeve pipe with dual air bags for trachea features that after the sleeve pipe is inflated by air bags, the gap between said sleeve pipe and internal wall of trachea is closed. Two air bags can be alternatively used to shorten the press time of air bag to local trachea mucosa, so preventing the ischemia, erosion, necrosis, etc of trachea mucosa. It is possible to use a pressure monitor.

Description

A double balloon tracheal tube

technical field

The invention relates to the technical field of medical devices, and relates to a double-balloon tracheal tube.

Background technique

Clinically, patients undergoing tracheotomy often need to be placed with a tracheal tube to keep the airway open. Existing tracheal tubes include two parts, an outer tube and a tube core. Wherein the outer casing is composed of a casing, an indicating balloon, an inflation tube, an inflation valve, a fixed wing, and an air bag. The fixed wing is located on the outer wall of the proximal end of the cannula, and the air bag is located on the outer wall of the far end of the cannula. One end of the inflatable tube passes through the connection between the fixed wing and the cannula, extends along the tube wall of the cannula and is connected with the air bag, and the other end of the inflatable tube For indicator balloon and inflation valve. The tube core is composed of head, tail and tube body. The head is conical, the top is blunt, and the tail is square or circular. The length of the tube body in the middle matches the sleeve of the outer tube. The tube core is placed In the outer tube, the head of the tube core just extends out of the distal nozzle of the sleeve when it is fitted, and the tail end of the tube core just covers the proximal nozzle of the tube. The secretions enter the outer tube, and on the other hand, the smooth conical surface prevents damage to the inner wall of the trachea. When in use, insert the outer cannula together with the stylet through the opening of the trachea and fix it with the fixed wings, pull out the stylet, connect the inflation valve with the syringe to inflate the airbag through the inflation tube, and make the airbag close the gap between the outer wall of the outer tube and the inner wall of the trachea This will not only prevent air leakage during mechanical ventilation, but also prevent oropharyngeal secretions or the contents of the nasogastric tube from entering the lower respiratory tract.

However, the above-mentioned tracheal tube has the following disadvantages: 1. The outer tube only has one air bag, and the long-term compression of the air bag on the tracheal wall is prone to mucosal ischemia, erosion, necrosis or granuloma and then causes symptoms such as tracheal stenosis. In 1969, Cooper and Grillo confirmed that only 48 hours after the balloon inflation of the tracheal tube, the tracheal mucosa was ulcerated. In 1984, Wited confirmed that the occurrence of tracheal stenosis was related to the length of intubation time. Among patients who were intubated for more than 11 days, 12% developed gas The airway is narrow, and the usual time of use is 2 to 3 weeks, so the incidence of the above-mentioned symptoms is relatively high; 2. The airbag is inflated by a syringe, and the amount of inflation is difficult to control. If the airbag is inflated too much, the pressure of the airbag is too high to compress the tracheal wall, which will easily cause mucosal defect. Blood, erosion, and necrosis; air leakage occurs during mechanical ventilation if the air bag pressure is too low. This is a problem that the existing tracheal tubes are difficult to solve.

Contents of the invention

The invention provides a double-airbag tracheal tube, which includes two parts, an outer tube and a tube core. The head is conical, the top is blunt, and the tail is square or circular. The length of the middle tube matches the sleeve of the outer sleeve. The core is placed in the outer sleeve. The head of the core just extends out of the distal nozzle of the casing, and the tail end of the tube core just covers the proximal nozzle of the casing. It is characterized in that the outer casing has two air bags, two inflation tubes, two inflation valves and Two air pressure indicating balloons.

In order to monitor the gas pressure in the airbag and facilitate operation, a pressure monitoring device can be provided. The pressure monitoring device can be the following two types: 1. The inflation valve is connected to the numerical control airbag pressure monitor through two inflation and deflation pipes respectively, so that the inflation pressure in the airbag and the time of alternate inflation and deflation of the two airbags can be controlled by the numerical control instrument. The numerical control instrument can adopt the numerical control instrument such as the commercially available numerical control air pressure tourniquet, so that the operation is more scientific and convenient. 2. The tail of the air pressure indicating balloon is bifurcated into two branch pipes, one branch pipe is an inflation valve pipe with an inflation valve at the nozzle, and the other branch pipe is an airbag pressure indicator. There is a pressure scale on the tube wall of the airbag pressure indicator. There is a spring in the tube cavity. The end of the spring close to the inflation valve tube is connected with the circular rubber valve. The diameter of the rubber valve matches the diameter of the inner cavity of the airbag pressure indicator. When the airbag When inflating, the gas pressure presses the spring through the rubber valve, and the scale on the edge of the rubber valve indicates the gas pressure in the air bag, so that the air pressure in the air bag can be monitored at any time and adjusted in time.

The present invention is an improvement to the above-mentioned existing tracheal tube. One of the improvements is to change the single airbag into double airbags, so as to alternately inflate and deflate, and prevent tracheal mucosal ischemia, erosion, and necrosis due to long-term pressure on the inner wall of the trachea. and other symptoms, the second improvement is to install a device for monitoring the gas pressure in the airbag, which makes the operation more scientific and convenient.

Description of drawings

Fig. 1 is a schematic diagram of the overall combined structure of the present invention with a numerically controlled airbag pressure monitor

Fig. 2 is the overall structure schematic diagram of the air pressure indicating balloon tail provided with the air bag pressure display of the present invention

Fig. 3 is a structural schematic diagram of the air pressure indicating balloon provided with an airbag pressure indicator at the tail of the present invention

Fig. 4 is the structural representation of outer casing of the present invention

Fig. 5 is a schematic diagram of the die structure of the present invention

Detailed ways

The present invention will be described in detail in conjunction with the accompanying drawings and embodiments.

The present invention includes two parts, an outer sleeve 1 and a tube core 2. The outer tube 1 is composed of a sleeve 1.1, a fixed wing 1.2, an air bag 1.3, an inflatable tube 1.4, an inflation valve 1.5 and an air pressure indicating balloon 1.6, and the tube core 2 is composed of a head 2.1 , tail end 2.2, and tube body 2.3, the head 2.1 is conical, the top is blunt, the tail end 2.2 is square or circular, the length of the middle tube body 2.3 matches the casing 1.1, and the tube core 2 is placed Inside the outer sleeve, the head 2.1 of the tube core just extends out of the distal nozzle 1.1.1 of the sleeve 1.1 when it is fitted, and the tail end 2.2 of the tube core just covers the proximal nozzle 1.1.2 of the sleeve 1.1, and the outer tube 1 There are two bladders, two inflation tubes, two inflation valves and two air pressure indicating balloons.

In order to monitor the gas pressure in the airbag and facilitate operation, a pressure monitoring device can be provided. Pressure monitoring devices can be of the following two types:

(1) The inflation valve 1.5 at the end of the air pressure indicating balloon is connected with the numerically controlled airbag pressure monitor 3 .

(2) The air pressure indicating balloon tail is bifurcated into two branch pipes, one branch pipe is an inflation valve pipe 1.7 with an inflation valve 1.5 at the nozzle, and the other branch pipe is an air bag pressure display 1.8. There is a pressure scale on the tube wall of the airbag pressure indicator. There is a spring 1.8.1 in the tube cavity. The end of the spring close to the inflation valve tube is connected with a circular rubber valve 1.8.2. The diameter of the rubber valve is the same as that of the airbag pressure indicator. Lumen diameter matching.

Example 1.

The present invention comprises two parts, an outer tube 1 and a tube core 2. The outer tube 1.1 of the outer tube is bent in a 120° arc, with a length of 90mm (inner arc 78mm, outer arc 102mm), outer diameter 11.9mm, inner diameter 8mm, and the outer diameter of the airbag after inflation. The diameter is 32mm, the width on both sides is 15mm, and the distance between the two airbags is 5mm. The inflatable indicator balloon is 1.6Φ30mm, and the length of the inflation tube 1.4 is 300mm.

The head 2.1 of the tube core 2 is conical, the top is blunt, the tail end 2.2 is a square sheet, the length of the tube body 2.3 in the middle matches the sleeve 1.1, the tube core 2 is placed in the outer sleeve, and the head of the tube core 2.1 just extends out of the distal nozzle 1.1.1 of the casing 1.1, and the tube core tail end 2.2 just covers the proximal nozzle 1.1.2 of the casing 1.1.

Example 2.

The inflation valve 1.5 at the end of the air pressure indicating balloon 1.6 of the present invention is connected with the numerically controlled airbag pressure monitor 3, and the rest are the same as in the embodiment 1, as shown in FIG. 1 .

Embodiment 3. The air pressure indicating balloon 1.6 tail of the present invention is bifurcated into two branch pipes, one branch pipe is provided with the inflation valve pipe 1.7 of the inflation valve 1.5 at the mouth of the pipe, and the other branch pipe is the air bag pressure indicator 1.8 (length 4cm, outer diameter 4mm, inner diameter 3.8mm), the pressure scale (0~30mmHg) is marked on the tube wall of the airbag pressure indicator, and there is a metal spring 1.8. The circular rubber valve 1.8.2 of mm links to each other, and the diameter of this circular rubber valve matches the cavity diameter of the air bag pressure indicator, in case gas overflows, and all the other are with embodiment 1, as shown in Figure 2.

Claims (2)

1. two air bag tracheal casing pipe, comprise trocar sheath (1) and tube core (2) two parts, trocar sheath (1) is by sleeve pipe (1.1), fixed-wing (1.2), air bag (1.3), gas tube (1.4), the gentle end finger of charge valve (1.5) shows sacculus (1.6) composition, fixed-wing (1.2) is positioned at the outer wall of sleeve pipe (1.1) near-end, air bag (1.3) is positioned at the outer wall of sleeve pipe (1.1) far-end, gas tube (1.4) one ends pass the joining place of fixed-wing (1.2) and sleeve pipe (1.1), link to each other along telescopic tube wall extension and with air bag, the other end of gas tube (1.4) is air pressure indication sacculus (1.6) and charge valve (1.5), tube core (2) is by head (2.1), tail end (2.2) and body (2.3) are formed, head (2.1) is coniform, nose-circle is blunt, tail end (2.2) is square or round sheet, intermediary body (2.3) length and sleeve pipe (1.1) coupling, tube core (2) places in the trocar sheath, the head (2.1) that overlaps fashionable tube core just stretches out the far-end mouth of pipe (1.1.1) of sleeve pipe (1.1), tube core tail end (2.2) just in time is covered in the near-end mouth of pipe (1.1.2) of sleeve pipe (1.1), it is characterized in that trocar sheath (1) has two air bags, two gas tubes, two charge valves and two air pressure indication sacculus, two charge valves (1.5) fill by two respectively, bleeder pipe (3.1) is connected with gasbag pressure monitor controller (3).

2. two air bag tracheal casing pipe, comprise trocar sheath (1) and tube core (2) two parts, trocar sheath (1) is by sleeve pipe (1.1), fixed-wing (1.2), air bag (1.3), gas tube (1.4), the gentle end finger of charge valve (1.5) shows sacculus (1.6) composition, fixed-wing (1.2) is positioned at the outer wall of sleeve pipe (1.1) near-end, air bag (1.3) is positioned at the outer wall of sleeve pipe (1.1) far-end, gas tube (1.4) one ends pass the joining place of fixed-wing (1.2) and sleeve pipe (1.1), link to each other along telescopic tube wall extension and with air bag, the other end of gas tube (1.4) is air pressure indication sacculus (1.6) and charge valve (1.5), tube core (2) is by head (2.1), tail end (2.2) and body (2.3) are formed, head (2.1) is coniform, nose-circle is blunt, tail end (2.2) is square or round sheet, intermediary body (2.3) length and sleeve pipe (1.1) coupling, tube core (2) places in the trocar sheath, the head (2.1) that overlaps fashionable tube core just stretches out the far-end mouth of pipe (1.1.1) of sleeve pipe (1.1), tube core tail end (2.2) just in time is covered in the near-end mouth of pipe (1.1.2) of sleeve pipe (1.1), it is characterized in that trocar sheath (1) has two air bags, two gas tubes, two charge valves and two air pressure indication sacculus, the afterbody of two air pressure indication sacculus (1.6) is branched into two arms, an arm is the charge valve pipe (1.7) that the mouth of pipe is provided with charge valve (1.5), another arm is gasbag pressure display (1.8), the tube wall of gasbag pressure display (1.8) is marked with the scale that shows pressure, one metal spring (1.8.1) is arranged in the tube chamber, this spring links to each other with a circular rubber valve (1.8.2) near an end of charge valve pipe (1.7), the diameter of this circle rubber valve and gasbag pressure display intracavity diameter coupling are with anti-gas-leak.

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