CN207898748U - Endotracheal catheter - Google Patents

Abstract

The utility model discloses a novel tracheal catheter, which comprises a catheter body composed of a hard inner tube and an outer tube. The catheter body is provided with an expansion air bag, and the two ends of the outer tube are sealed and firmly connected with the outer wall of the inner tube to form a sealed cavity. The rear end of the outer sleeve is provided with an inflation catheter, which is marked with a scale mark; the expansion balloon is sealed and fixed at the front end of the outer sleeve, and the front end of the expansion air bag is recessed inward to form a bowl-shaped thickened support surface, and the front end of the inner sleeve is connected to the bowl-shaped thickened support The surface is fixedly connected, and the bowl-shaped thickened support surface is provided with openings corresponding to the inner casing tube holes; the inflation catheter penetrates from the rear end of the outer casing and communicates with the expansion air bag; the front end of the outer casing is provided with a screen hole, There is a suction tube at the end, and a hard bite is set on the outer sleeve; after the bite, the edge is turned outward to form a lip baffle, and the outer circumference of the bite is covered with a soft rubber layer, and the outer wall of the outer sleeve at the front of the bite is set There is a card block; the rear end of the inner sleeve is provided with a connector. The utility model has the advantages of simple structure and convenient use.

Description

new endotracheal tube

technical field

The utility model relates to a medical device, in particular to a novel trachea catheter.

Background technique

Endotracheal intubation refers to inserting a special endotracheal tube into the patient's trachea through the oral or nasal cavity; it is a technique for endotracheal anesthesia and patient rescue, and it is also the most reliable means of keeping the upper airway open. Tracheal intubation is required when the following situations occur: 1. Patients whose airway is difficult to ensure unobstructed during general anesthesia, such as intracranial surgery, thoracotomy, general anesthesia surgery requiring special positions such as prone position or sitting position; Patients with major operations under general anesthesia such as internal tumors compressing the trachea, jaw, face, neck, and facial features, and extremely obese patients; patients with obvious inhibition of breathing by general anesthesia or who are treated with muscle relaxants should all undergo tracheal intubation. 2. Tracheal intubation plays an important role in the rescue of critically ill patients; respiratory failure requiring mechanical ventilation, cardiopulmonary resuscitation, drug poisoning, and severe neonatal asphyxia must all undergo tracheal intubation. 3. Some special anesthesia: if combined with hypothermia, antihypertensive surgery and intravenous procaine combined anesthesia, etc., it is necessary to intubate the patient's existing trachea.

As shown in Figure 1, the existing tracheal catheter is generally a catheter body composed of a transparent hard inner sleeve and an outer sleeve set in a gap and an expansion balloon arranged on the catheter body. The inner sleeve is a through tube, and the two ends of the outer sleeve are Sealing forms a sealed cavity in the middle, and an inflation catheter is provided at the rear end of the outer sleeve for inflating the expansion balloon; the outer sleeve is provided with a scale mark for judging the insertion depth. During operation, insert the endotracheal tube into the throat with the help of a laryngoscope and a guide wire. The insertion depth is generally 18-22 cm from the insertion end to the incisors. After insertion, inject gas into the dilation balloon through the inflation catheter. Connect the ventilator to the back end of the endotracheal tube, and finally place a hollow hard tube in the patient's mouth to prevent the patient from biting off or biting off the endotracheal tube.

The existing dilation balloon cannot completely cover the front end of the endotracheal tube, and the liquid (such as sputum) in the human trachea will accumulate between the endotracheal tube at the front of the dilation balloon and the human trachea wall for a long time; It can only absorb the liquid inside the endotracheal tube, so a large amount of liquid will accumulate between the endotracheal tube at the back of the dilated balloon and the human body's trachea wall; the long-term accumulation of liquid will affect the patient's breathing, cause choking, and easily lead to bacterial infection; The traditional endotracheal tube cannot flush or locally apply drugs to the human body's tracheal wall at the rear of the dilation balloon. In addition, since the hollow hard tube and the endotracheal tube are not integral structures, and are placed after the endotracheal tube is intubated, the patient’s mouth needs to be opened again when placing it, which is troublesome to operate; at the same time, there is no fall-off structure under the hollow hard tube, It is very easy to slip into the patient's mouth and cause damage to it, and there is no elastic layer on the hollow hard tube, which may cause damage to the patient's teeth after the patient's teeth are clenched.

Contents of the invention

The purpose of the utility model is to provide a novel tracheal tube with simple structure and convenient use.

In order to achieve the above object, the utility model can take the following technical solutions:

The novel endotracheal catheter described in the utility model comprises a catheter body composed of rigid inner and outer tubes set in gaps and an expansion balloon arranged on the catheter body. Sealed and fixed to form a sealed cavity in the middle, the rear end of the outer sleeve is provided with an inflation catheter, and the outer sleeve is marked with a scale mark; the expansion air bag is sealed and fixed to the front end of the outer sleeve, and the front end of the expansion air bag is sunken inward to form a bowl shape A thickened support surface, the front end of the inner casing extends forward and is fixedly connected with the bowl-shaped thickened support surface, and an opening corresponding to the inner casing tube hole is opened on the bowl-shaped thickened support surface The inflatable catheter is sealed and extended from the rear end of the outer sleeve and communicated with the expansion balloon; a number of screen holes are evenly spaced at the front end of the outer sleeve, and the rear end of the outer sleeve is provided with a hole that is in contact with the sealed air bag. The cavity is connected to the suction tube, and the outer sleeve is equipped with a hard bite; the edge of the bite is turned out to form a lip plate, and the outer peripheral surface of the bite is covered with a soft rubber layer, which is located on the bite A blocking block is provided on the outer wall of the outer sleeve at the front; a connecting head is provided in communication with the rear end of the inner sleeve.

The stopper is located 16-21 cm away from the front end of the inner sleeve.

The utility model has the advantages of simple structure and convenient use. The bowl-shaped thickened support surface at the front end of the expansion balloon makes the expansion balloon close to the human trachea wall after expansion, which is convenient for completely sucking out the liquid (such as sputum) in the front of the expansion balloon. The hole is convenient for completely sucking out the liquid at the back of the dilated balloon, so that the patient can breathe smoothly, reduce the coughing caused by the accumulation of liquid in the intubated patient, and reduce the chance of tracheal infection; at the same time, the trachea can be filled with drugs (such as Atomized medicine can make sputum thinner and easier to suck out, antibiotics can avoid local infection, etc.) adjuvant treatment. The tooth bite on the outer sleeve of the movable suit can avoid repeated opening of the patient's mouth, making the operation more convenient. The soft rubber layer covering the outer surface of the tooth bite can effectively protect the patient's teeth, and the lip baffle and locking block can effectively Prevent the teeth from slipping and avoid damage to the patient's oral cavity.

Description of drawings

Fig. 1 is a structural schematic diagram of an existing tracheal intubation tube.

Fig. 2 is a structural representation of the utility model.

Fig. 3 is an enlarged view of the cross-sectional structure along A-A in Fig. 2 .

Fig. 4 is a schematic diagram of the inflated state of the expansion airbag in Fig. 2 .

Detailed ways

As shown in Figures 2-4, the new endotracheal catheter described in the utility model includes a catheter body composed of a rigid inner sleeve 1 and a rigid outer sleeve 2 fitted in a gap, and an expansion balloon 3 arranged on the catheter body The two ends of the outer sleeve 2 are sealed and fixedly connected with the outer wall of the inner sleeve 1 to form a sealed cavity 4 in the middle. The rear end of the outer sleeve 2 is provided with an inflation conduit 5, and the inflation conduit 5 is sealed and extended from the rear end of the outer sleeve 2 to penetrate and expand. The airbag 3 is connected, and the inflation catheter 5 can be easily inflated into the expansion airbag 3; the outer tube 2 is marked with a scale mark 6, which can assist in observing the length of the intubation and facilitate the operation of the endotracheal intubation. The expansion balloon 3 is sealed and fixed to the front end of the outer sleeve 2, and is covered on the outer wall of the inner sleeve 1, so that the expansion balloon 3 and the sealed cavity 4 become two independent chambers, and the front end of the expansion balloon 3 is sunken inward to form a bowl shape The thickened support surface 7, the front end of the inner sleeve 1 extends forward and is fixedly connected with the bowl-shaped thickened support surface 7, and an opening corresponding to the tube hole of the inner sleeve 1 is opened on the bowl-shaped thickened support surface 7 , when the expansion balloon 3 is expanded, it can be close to the trachea wall of the human body, so that there is no gap for accumulated liquid (such as sputum) between the trachea wall of the human body and the mouth of the inner cannula 1, so that the liquid in the front part of the expansion balloon 3 can be completely sucked out; A number of sieve holes 8 are evenly spaced at the front end of the outer tube 2, and a liquid suction tube 9 connected to the sealed cavity 4 is provided at the rear end of the outer tube 2, through which the airbag 3 rear portion of the human body's trachea wall can be easily expanded. The liquid between the cannula 2 and the outer cannula 2 can be completely sucked out, and the liquid in the front and back of the expansion balloon 3 can be completely sucked out, so that the patient can breathe more smoothly, reduce the coughing caused by the accumulation of liquid in the intubated patient, and reduce the chance of tracheal infection; Through the sieve hole 8, medicine can also be injected into the trachea (such as atomized medicine can make sputum become thinner and easier to suck out, and antibiotics can avoid local infection, etc.) to assist treatment. There is a hard tooth bite 10 on the outer casing 2, and the outer peripheral surface of the tooth bite 10 is covered with a soft rubber layer, which can effectively protect the patient's teeth; The outer wall of the outer tube 2 at the front of the 10 is provided with a block 12, the lip plate 11 and the block 12 can effectively prevent the bite 10 from slipping, and avoid causing damage to the patient's oral cavity; in addition, because the existing tracheal intubation During the operation, the insertion depth of the catheter body is generally 18-22cm from the front end to the front teeth, so the stop block 12 is arranged at 16-21cm from the front end of the inner casing 1, so that the teeth bite 10 is just positioned at the patient's front teeth after intubation. A connecting head 13 is provided in communication with the rear end of the inner sleeve 1, which is convenient for being connected with a ventilator. The intubation process of the novel endotracheal catheter described in the utility model is the same as the intubation process of the existing endotracheal catheter. It is only necessary to distinguish the inflatable catheter 5, the liquid suction tube 9 and the connector 13 at the rear end of the inner cannula 1. To avoid confusion, the inflatable conduit 5, the suction pipe 9 and the connector 13 can also be divided into different colors or marked with different words to distinguish them, which makes the operation more convenient.

Claims (2)

1. A new type of endotracheal tube, comprising a tube body composed of rigid inner and outer tubes (1, 2) fitted in gaps and an expansion balloon (3) arranged on the tube body, the outer tube (2) The two ends are sealed and fixedly connected with the outer wall of the inner sleeve (1) to form a sealed cavity (4) in the middle, and the rear end of the outer sleeve (2) is provided with an inflation conduit (5), and the outer sleeve (2) is marked with a scale mark (6); it is characterized in that: the expansion balloon (3) is sealed and fixedly connected to the front end of the outer tube (2), and the front end of the expansion balloon (3) is sunken inward to form a bowl-shaped thickened support surface (7), the The front end of the inner sleeve (1) extends forward and is fixedly connected with the bowl-shaped thickened support surface (7). The opening corresponding to the hole; the inflation catheter (5) seals and extends from the rear end of the outer cannula (2) to penetrate and communicate with the expansion balloon (3); at the front end of the outer cannula (2) A number of sieve holes (8) are arranged at intervals, and a suction pipe (9) connected to the sealed cavity (4) is provided at the rear end of the outer casing (2). bite (10); the rear edge of the bite (10) is turned outward to form a lip (11), and the outer peripheral surface of the bite (10) is covered with a soft rubber layer, located at the front of the bite (10) A locking block (12) is arranged on the outer wall of the outer casing (2); and a connecting head (13) is provided in communication with the rear end of the inner casing (1). 2. The new endotracheal tube according to claim 1, characterized in that: the stopper (12) is located 16-21 cm away from the front end of the inner cannula (1).