Anaesthetic mask special for oral endoscopy

Abstract

The present invention discloses an anaesthetic mask special for oral endoscopy. The aim of the invention is to overcome the problem that the endoscopy and positive pressure ventilation can not be executed simultaneously. The anaesthetic mask comprises a mask body (9), an oxygen interface (1), an endoscope channel pipe (3), a sealing ring (4) and an annular rubber blanket (8). The sealing ring (4) is fixed at the right central part of mask body (9). One end of endoscope channel pipe (3) is inserted into the sealing ring (9) for becoming a slip connection. The other end of endoscope channel pipe (3) is connected with a screw cap (5) through screw connection. The annular rubber blanket (8) is fixed between the other end of endoscope channel pipe (3) and the screw pipe (5). The oxygen interface (1) is positioned at one side of endoscope channel pipe (3) and fixed on the mask body (9). The hole of annular rubber blanket (8) can be also inserted with a conversion barrel (6) for becoming a slip connection. The central sleeved part at the other end of conversion barrel (6) is processed with a rubber cap (7) of one through hole. The height of endoscope channel pipe (3) or conversion barrel (6) is 40-70mm.

Description

technical field [0001] The present invention relates to a face mask in the field of clinical medicine, more particularly, to a special anesthesia face mask for peroral endoscopy. Background technique [0002] When gastroscope, laryngoscope, bronchoscope and other endoscopy are performed through the mouth and nose, even though the surface anesthesia has been done as much as possible, the patient will still have strong nausea, vomiting, choking, and even laryngospasm, Serious complications such as perforation, bleeding, arrhythmia, myocardial infarction, and cerebral hemorrhage; children cannot cooperate with endoscopy and must be anesthetized. Painless anesthesia requires the combined application of narcotic analgesics and sedatives. Respiratory depression is the most common side effect, with an incidence rate of about 30-50%. Therefore, the ability to perform positive pressure ventilation at the same time as endoscopy has always been a troublesome problem. The bottleneck in...

AI Technical Summary

Problems solved by technology

[0005] Disadvantages: Positive pressure ventilation cannot be performed through a face mask at the same time as gastroscope examination. At this time, there will be multiple insertions of gastroscopes, which is not only time-consuming, but also increases the patient's injury, and also increases the probability of aspiration and laryngospasm; for obese patients It is often the case that the depth of anesthesia required for gastroscopy is greater than the depth of anesthesia for respiratory depression, which is more dangerous and more difficult to operate

[0007] Disadvantages: deep anesthesia depth is required; recovery is slow; the ventilation space is reduced and the airflow resistance is increased; gastroscopy activities or changes in the patient's head position will cause the displacement of the laryngeal mask; sometimes the airway seal is poor; the laryngeal mask can also be used Causing nausea, vomiting, and laryngospasm in patients, it is contraindicated in patients with high risk of vomiting, reflux and aspiration; patients taking muscle relaxants need to enter the postoperative recovery room for monitoring, and are not suitable for non-hospitalized patients; use with caution in obese patients; sore throat; Laryngeal masks are expensive and cost more when hospitalized

[0009] Disadvantages: the gastroscope occupies the airflow channel and increases the ventilation resistance; the distance from the outer mouth of the corner joint to the incisors is relatively large, which occupies part of the length of the gastroscope and limits the depth of entry; when the angle between the corner joint and the oral cavity is angled, it is impossible to adjust it to be beneficial to the operator operating angle

[0012] 1) The standard anesthesia mask, which has not been used in clinical painless anesthesia, is only used to prevent medical staff from being contaminated by the secretions coughed up by patients

[0013] Disadvantages: Positive pressure ventilation cannot be performed through a face mask at the same time as bronchoscopy; if the anesthesia is too deep to suppress breathing, if the anesthesia is too shallow, coughing and laryngospasm are prone to occur, obese patients are more likely to suffer from respiratory depression, the depth of anesthesia is difficult to grasp, and risks The coefficient is too large, and there is no clinical report on the application of standard masks for bronchoscopy

[0015] Disadvantages: The ventilation space is reduced, and the airflow resistance is increased; muscle relaxant drugs are required, which is limited to the intraoperative examination of inpatients, and the postoperative need to enter the recovery room after anesthesia, and the outpatient examination is rarely used, and the cost is high

[0018] Disadvantages: deep anesthesia depth is required; slow recovery; reduced ventilation space and increased airflow resistance; movement of the endoscope or changes in the patient's head position can lead to displacement of the laryngeal mask; airway tightness is sometimes poor; the laryngeal mask can cause Nausea, vomiting, and laryngospasm in patients; aspiration cannot be prevented during hemoptysis, and it is also not conducive to oral cleaning; patients taking muscle relaxants need to enter the postoperative recovery room for monitoring, which is not suitable for non-hospitalized patients; throat pain; obesity patients should be cautious. use; laryngeal masks are expensive and more expensive when hospitalized

[0020] Disadvantages: The bronchoscope occupies the airflow channel and increases the ventilation resistance; the distance from the outer mouth of the corner joint to the glottis is larger than the distance from the nostril to the glottis, which occupies part of the length of the bronchoscope and limits the inspection depth of the endoscope; the inner mouth of the corner joint to the glottis There is a certain distance between the incisors and there is no support, which is not conducive to the softer (bronch) bronchoscope (diameter 2-7mm) entering the trachea through the oral pharynx with greater resistance; when the angle between the corner joint and the oral cavity is formed, it is impossible to adjust to The angle that is conducive to the operator's operation

[0023] Disadvantages: The airtightness of the side opening of the mask is poor, and its application is limited in patients who need to control breathing; the distance from the side hole to the glottis is larger than the distance from the nostril to the glottis, which occupies part of the length of the bronchoscope and limits the endoscope The depth of inspection; the side hole into the endoscope is not the best angle for the operator to operate; there is a certain distance from the side hole to the incisors, and there is no support, which is not conducive to the passage of the thinner (bronch) bronchoscope (diameter 2-7mm) with greater resistance The oral pharynx enters the trachea, which is also not conducive to the bronchoscope entering the trachea through the oral cavity with high resistance (especially the base of the tongue)

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