RU208403U1 - LASER PROTECTION NOZZLE OF A JET CATHETER FOR ARTIFICIAL VENTILATION OF THE LUNGS IN LASER SURGERY OF THE LARYNX AND TRACHEA - Google Patents

Abstract

The utility model relates to the field of medicine, namely to medical devices, and can be used to protect a jet catheter for artificial lung ventilation from laser exposure during laser surgery of the larynx and trachea. For this purpose, the nozzle is made in the form of a hollow stainless steel cylinder coated with black paint, equipped on the outside with a ring for installing the nozzle on the catheter, the diameter of the cylinder is from 2.5 mm to 5 mm, the length is 5-50 mm, depending on the outer diameter of the used catheter and the length of the laser exposure zone. The cap provides protection for the jet ventilation catheter from laser exposure and possible ignition during laser surgery of the larynx and trachea.

Description

The utility model relates to the field of medicine, namely to medical devices, and can be used to protect a jet catheter for artificial lung ventilation from laser exposure during laser surgery of the larynx and trachea.

Known jet catheter for mechanical ventilation (endotracheal tube LazerFlex firm "MALLINCRODT") for short-term intubation when performing operations on the larynx using a laser

The disadvantage of the tube is its large outer diameter (more than 5 mm), which prevents inspection of the airways, and the lack of flexibility of the tube when inserted into the airways.

Known jet catheter for artificial ventilation of small diameter, made of polyvinyl chloride, used in laser surgery. The catheter is resistant to remote laser, has a small diameter, and is flexible.

The disadvantage of the boat is that it ignites when exposed to laser contact.

The technical result of the utility model is to protect the jet catheter for artificial lung ventilation (endotracheal tube) from the effects of a laser beam and possible fire.

The specified technical result is achieved in a nozzle for protection against laser action of a jet catheter made of polyvinyl chloride for artificial ventilation of the lungs during laser surgery of the larynx and trachea, made in the form of a hollow stainless steel cylinder covered with black paint, equipped with a ring on the outside for installing the nozzle on the catheter, cylinder diameter from 2 mm to 15 mm, length 5-50 mm, depending on the outer diameter of the used catheter and the length of the laser intervention zone.

When the laser radiation falls on the nozzle, the laser energy is absorbed due to the black coating of the protective cap. In this case, the jet catheter (endotracheal tube) is not damaged, and laser energy is not scattered.

The utility model is shown in FIG. 1, 2, where in FIG. 1 - General view of the nozzle, Fig. 2 - nozzle in action.

The nozzle contains a hollow stainless steel cylinder 1, which is provided with a ring 2 on the outside for installing the nozzle on the jet catheter 3.

The nozzle can be made of different diameters from 2.5 mm to 5 mm and lengths of 5-50 mm, depending on the outer diameter of the jet catheter used and the length of the surgical laser intervention zone. The diameter of the jet catheter starts from 2.2 mm - the diameter of the nozzle is 2.5 mm minimum. The outer diameter of the thickest catheter is 13 mm, but these are not used in laryngeal surgery, as they interfere with the view of the vocal folds.

The attachment is used, for example, as follows.

The nozzle (hollow cylinder 1), prior to introduction into the respiratory tract, is installed using the ring 2 on the catheter 3. After the introduction of the catheter 3 into the airway, the cylinder 1 is moved using the ring 2 into the laser exposure zone and is installed in front of the nozzle 4 of the catheter 3. In Fig. 2 the connector 5 of the catheter is marked 3.

The essence of the utility model is confirmed by clinical examples.

Example 1. Patient R., 47 years old. I entered the ENT clinic of the FSBEI HE PSPbGMU named after I. acad. I.P. Pavlova 04/22/2021 with a diagnosis of Generalized papillomatosis of the larynx and trachea. On April 23, 2021, laser resection of the papillomas of the larynx and trachea was performed under general anesthesia with invasive high-frequency transcatheter jet artificial ventilation of the lungs with a respiratory mixture consisting of 100% oxygen. Intraoperatively, laser resection of papillomas of the vocal folds and the upper third of the trachea with a total length of about 5 centimeters was performed, circularly over the entire surface of the mucous membrane. The catheter for jet ventilation of lungs 400 mm long, 2.2 mm in diameter was protected from laser exposure with a 30 mm long, 2.5 mm diameter nozzle to prevent its damage and fire. During the operation, the tip was moved along the catheter in such a way as to exclude the risk of damage to the catheter by laser instruments. The duration of the laser exposure in the operation area and the location of the jet ventilation catheter was 55 minutes. There were no signs of catheter damage and no fire.

Example 2. Patient C., 54 years old. I entered the ENT clinic of the FSBEI HE PSPbGMU named after I. acad. I.P. Pavlova 03/31/2021 with a diagnosis of Polyp of the right vocal fold. On 04/02/2021, laser resection of the vocal fold polyp was performed under general anesthesia with invasive high-frequency transcatheter jet artificial ventilation of the lungs with a respiratory mixture consisting of 100% oxygen. The length of the laser exposure in the area of the right vocal fold was 5 mm. A catheter for jet ventilation of lungs 300 mm long and 4 mm in diameter was protected from laser action with a 5 mm long and 5 mm nozzle to prevent its damage and fire. During the operation, the tip was moved along the catheter in such a way as to exclude the risk of damage to the catheter by laser instruments. The duration of the laser exposure in the operation area and the location of the jet ventilation catheter was 15 minutes. There were no signs of catheter damage and no fire.

The attachment was used in 120 patients from 2018 to 2021. There were no cases of catheter damage or fire.

The nozzle protects the ventilation jet catheter from laser exposure and possible fire during laser surgery of the larynx and trachea.

Claims (1)

A nozzle for protection against laser action of a jet catheter made of polyvinyl chloride for artificial ventilation of the lungs during laser surgery of the larynx and trachea, made in the form of a hollow stainless steel cylinder covered with black paint, equipped with a ring on the outside for installing the nozzle on the catheter, cylinder diameter from 2, 5 mm to 5 mm, length 5-50 mm, depending on the outer diameter of the used catheter and the length of the laser exposure zone.

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