RU2796776C1 - Set of instruments for the elimination of stricture of the stenon's duct of the parotid salivary gland - Google Patents

Abstract

FIELD: surgical instruments.

SUBSTANCE: invention can be used in maxillofacial surgery. A set of tools for eliminating the stricture of the Stenon's duct of the parotid salivary gland contains a polymer stent in the form of an elongated tube, a trocar with an oblique cut at the end and a flexible conductor, at the end of which a thread is made in the form of a drill for excision of the stricture. The outer diameter of the stent corresponds to the inner diameter of the trocar. The inner diameter of the stent corresponds to the diameter of the flexible conductor. The thread has 5–7 turns, made with a constant pitch. Along the length of the polymer stent, marks are evenly applied with a step of 10 mm.

EFFECT: reducing the trauma of surgical intervention by performing an operative access through an external puncture, the possibility of installing a stent in case of deformation of the mouth of the Stenon's duct and preventing the recurrence of pathology.

1 cl, 6 dwg

Description

The invention relates to medical equipment, namely to surgical instruments, and can be used in maxillofacial surgery to eliminate the stricture of the Stenon duct of the parotid salivary gland with minimal operational access and traumatization of surrounding tissues, and prevention of the recurrence of pathology.

Known stent catheter salivary gland (No. CN 212730681 U), in which the authors propose the use of a stent for the treatment of strictures of the ducts of the salivary glands, as well as the treatment of inflammatory processes. This model consists of a tube with a narrowed end in the distal part and further expanding along the length, in the medial part there is a gas inlet point, one end surface of the gas inlet point is equipped with a gas controller. There is also a hole for the entry of drugs.

Also known polymeric stent for the treatment of ducts of the salivary glands and the way it is used (No. US 20050125071 A1). For the purpose of treating strictures of the ductal system of the salivary gland, a polymer stent is proposed in the form of an elongated tube with valves of various modifications. The stent was placed into the lumen of the Stenon's duct through the mouth of the duct using a sialoendoscope or a guide element and fixed with sutures to the oral mucosa.

The common disadvantages of these solutions are the limitation of the possibility of installing a stent in case of deformation of the mouth of the Stenon's duct, the traumatic nature of the surgical intervention, as well as the need to use expensive equipment that requires specialized training of the doctor.

The technical result achieved by using the invention is to reduce the trauma of surgical intervention, the possibility of installing a stent in case of deformation of the mouth of the Stenon's duct by performing an operative access through an external puncture.

The claimed technical result is achieved using a set of tools to eliminate strictures of the Stenon duct of the parotid salivary gland, containing a polymer stent in the form of an elongated tube, as well as a trocar with an oblique cut at the end and a flexible conductor, the end of which is threaded, and the outer diameter of the stent corresponds to the inner diameter trocar, and the inner diameter of the stent corresponds to the diameter of the flexible conductor.

The most optimal is the execution of the thread at the end of the flexible conductor with a constant pitch and the number of turns 5-7.

It is advisable to apply uniform markings along the length of the polymer stent.

Preferably, the markers on the polymer stent are applied in 10 mm increments.

A trocar with an oblique cut at the end allows external puncture of the enlarged section of the Stenon's duct and in the antegrade direction along the flow of saliva, it is the least traumatic to access the stricture, including when the mouth of the Stenon's duct is deformed.

The passage of a flexible conductor along the trocar, at the end of which a thread is made, makes it possible to excise the stricture and bring the conductor into the oral cavity with the least trauma to the surrounding tissues.

Uniform marks applied along the length of the polymer stent provide control over the location of the stent during its passage along the conductor.

The figures show:

- in Fig. 1 - trocar, side view;

- in Fig. 2 - flexible conductor;

- in Fig. 3 - polymer stent;

- in Fig. 4 - external puncture of the enlarged section of the Stenon's duct with a trocar;

- in Fig. 5 - conducting a flexible conductor along the trocar in the antegrade direction through the stricture of the Stenon's duct into the oral cavity;

- in Fig. 6 - carrying out a polymer stent along a flexible conductor into the oral cavity. Set of tools for elimination of stricture of the Stenon's duct parotid

salivary gland contains:

- trocar 1 with an oblique cut of the tip 2 and an internal channel 3 (Fig. 1). The trocar is equipped with holder 4;

- flexible conductor 5 with a threaded section 6 at the end (Fig. 2);

- polymer stent 7 in the form of a tube with an internal channel 8 (Fig. 3). The stent is equipped with holder 9. Marks 10 are evenly applied along the length of the polymer stent.

The outer diameter of the stent 7 corresponds to the diameter of the inner channel 3 of the trocar 1, and the inner diameter of the stent corresponds to the diameter of the flexible conductor 5.

The Parotid Stenon's Duct Stricture Kit can be used as follows.

Under local anesthesia in the area of the expanded part 11 of the duct under ultrasound control with external access, a puncture is made with a trocar 1 (Fig. 4).

Through the trocar 1, a flexible conductor 5 is inserted into the duct (Fig. 5). The lumen of the duct is expanded by displacing the conductor along the length of the duct, while the threaded section 6 at the end of the conductor 5 performs the function of a drill and cuts the stricture. The end of the conductor 5 is brought into the oral cavity. A stent 7 is installed along the conductor 5, which is advanced until its medial end is in the oral cavity. The level of location of the stent 7 is controlled by marks 10, as well as according to echography. After that, the flexible conductor 5 is removed. The section of the stent adjacent to the holder 9 is cut off, the rest is advanced until its medial end is in the lumen of the Stenon's duct. Stent 7 is fixed with sutures to the oral mucosa and cut after the fixing suture at a distance of 5-7 mm from it. Thus, stent 7 remains in the Stenon's duct, extending into the oral cavity, around which the excretory section of the duct is formed.

The use of the invention makes it possible to reduce the trauma of surgical intervention by performing an operative access through an external puncture, provides the possibility of installing a stent in case of deformation of the mouth of the Stenon's duct, as well as prevention of the recurrence of pathology.

Claims (1)

A set of tools for eliminating the stricture of the Stenon duct of the parotid salivary gland, containing a polymer stent in the form of an elongated tube, characterized in that it additionally contains a trocar with an oblique cut at the end and a flexible conductor, at the end of which a thread is made in the form of a drill for excision of the stricture, and the outer the diameter of the stent corresponds to the inner diameter of the trocar, the inner diameter of the stent corresponds to the diameter of the flexible conductor, and the thread has 5-7 turns, made with a constant pitch, while the length of the polymer stent is evenly marked with a pitch of 10 mm.

Images