RU181729U1 - Device for providing hemostasis in neurosurgical operations - Google Patents

Abstract

The utility model relates to medicine, namely to devices used in neurosurgery, surgery. A device for hemostasis during neurosurgical operations, which is a 5 ml surgical wax melting tank equipped with a hermetically sealed lid, a heating element, a temperature sensor, a dispenser, a control unit and an autonomous power supply, while the heating element is made in the form of a rod, which is located inside the tank, at an equal distance from its side walls, the temperature sensor is made in the form of a ring and is located in front of the dispenser, the dispenser allows t release a portion of 0.3 ml preheated wax, the control unit controls the heating temperature of the heating element in three modes of operation, the first mode corresponds to heating the wax to 45 ° C, the second mode corresponds to heating the wax to 50 ° C, the third mode corresponds to wax heating up to 55 ° C, and the power source allows you to use the device for 30 minutes of battery life. 1 ill.

Description

The technical field to which the utility model relates.

The utility model relates to medicine, namely to devices used in neurosurgery.

The level of technology. When conducting neurosurgical operations, the surgeon is faced with bleeding and spongy cut bone. It is almost impossible to stop this bleeding by coagulation, it is often impossible to close the bleeding end with soft tissues surrounding the awn, and the application of a hemostatic sponge is difficult due to the complexity of its fixation. Synthetic drugs injected into the spongy bone often cause a rejection reaction up to aseptic necrosis. The only effective way to stop such bleeding is to carry out waxing - the mechanical pressing of sterile surgical wax into the bleeding area.

There is a known technique for mechanically stopping bleeding from bone during neurosurgical interventions, described in all textbooks on neurosurgery and indicated in the instructions for surgical wax [for example, http://www.nda.ru/suture/bone-wax.html].

With this manipulation, sterile wax is kneaded by the surgeon's fingers to the required consistency, while it sticks to his hands, his pieces fall into the area of the surgical field, the surgeon spends at least 1.5-2 minutes to get the right warm-up for each portion of the wax, during which time the bleeding continues , and with a large bleeding zone, previously pressed wax can be knocked out with blood.

The prototype of the proposed device is "Electrically heated dental wax supplying and manipulating tools" patent US 3364577 And from June 7, 1965. The authors have developed an electrically heated tool for forming and feeding wax, with quick-detachable tips. Some tips are shaping, while others are nozzles that feed and form wax. This device was used to remove specifying dental prints during prosthetics before the appearance of an alginate mixture and three-dimensional scanning of the prosthetics site.

However, the use of this device during neurosurgical surgery is associated with a number of disadvantages:

1. The difficulty in conducting preoperative sterilization of the device due to its size and abundance of parts.

2. The device depends on the power source.

3. Wax heating is possible only in one temperature mode.

4. Forced dosing of wax is not possible, which allows the surgeon to use more than two servings of surgical wax, which can lead to serious complications from the wound.

Utility Model Disclosure

The authors propose a device for hemostasis during neurosurgical operations, which is a 5 ml surgical wax melting tank equipped with a hermetically sealed lid, a heating element, a temperature sensor, a dispenser, a control unit and an autonomous power source, while the heating element is made in the form of a rod, which located inside the tank, at an equal distance from its side walls, the temperature sensor is made in the form of a ring and is located in front of the dispenser , the dispenser allows you to release a portion of the heated wax with a volume of 0.3 ml, the control unit controls the heating temperature of the heating element in three operating modes, while the first mode corresponds to heating the wax to 45 ° C, the second mode corresponds to heating the wax to 50 ° C, the third mode corresponds to heated wax to 55 ° C, and the power source allows you to use the device for 30 minutes of battery life.

The device we offer has several advantages:

1. The volume of the surgical wax melting tank of 5 ml allows only two standard portions (about 2.5-3 g) of surgical wax to be used, which is sufficient for mechanical hemostasis under normal conditions, but does not allow the surgeon to get carried away by waxing the end of the bone with massive bleeding , which prevents postoperative complications associated with necrosis and rejection of the bone, excessively filled with wax.

2. Dosage of 0.3 ml wax per serving does not allow the surgeon to apply a thick layer and prevents postoperative complications associated with necrosis and rejection of the bone area, which is excessively filled with wax.

3. Using a combination of a ring temperature sensor and a centrally located heating element, it is possible to maintain a uniform heating temperature of the dosed wax due to its convection movement inside the tank.

4. The device allows you to apply slightly softened wax (the first mode corresponds to heating the wax to 45 ° C), which allows you to create more effort when it is pressed - it is used on bones with massive bleeding and large pores.

5. The device allows you to apply a very liquid wax (the third mode corresponds to heating the wax to 55 ° C), which allows you to close the smallest pores in the bone, without applying additional pressure - it is used on brittle and thin bones, and in cases where bleeding is weak in intensity but vast in area.

6. The device can work autonomously for at least 30 minutes, which is sufficient for hemostasis, while the probability of a power cable getting into the wound is excluded and nothing limits the surgeon's actions in the wound (no wires).

The technical result of using the proposed device is the provision of local hemostasis during bone cutting during neurosurgical surgery by rubbing pre-softened wax into the edge of the cut bone (mechanical hemostasis), while the consistency of the surgical wax can be set depending on the required quality of adhesion of the rubbed wax and on the required depth its penetration into the bone.

To characterize the utility model, in particular, the following features of the device are used:

- the heating element is made in the form of a rod, which is located inside the tank, at an equal distance from its side walls,

- the temperature sensor is made in the form of a ring and located in front of the dispenser,

- the dispenser allows you to release a portion of the heated wax with a volume of 0.3 ml,

- the control unit controls the heating temperature of the heating element in three modes of operation, while the first mode corresponds to heating the wax to 45 ° C, the second mode corresponds to heating the wax to 50 ° C, the third mode corresponds to heating the wax to 55 ° C,

- the power source allows you to use the device for 30 minutes of battery life

Brief Description of the Drawings

In FIG. 1 shows a diagram (side view in section) of the proposed device:

- position 1 - dispenser;

- position 2 - temperature sensor;

- position 3 - 5 ml surgical wax melting tank;

- position 4 - heating element;

- position 5 - hermetically sealed lid;

- position 6 - control unit,

- position 7 - autonomous power supply.

Utility Model Implementation

The claimed device can be applied as follows:

- the device is sterilized by the method adopted in this medical institution;

- in the operating room, two servings of wax are laid in the device;

- the heating mode is set (most often the second mode, which corresponds to the heating of the wax to 50 ° C);

- in case of bleeding from the end face of the cut bone, wax is applied portionwise, followed by its pressing into the area of the bleeding bone with the fingers of the operating surgeon;

- when massive bleeding occurs that knocks the wax out of the cut bone, it is necessary to switch to the first mode of operation - the heating of the wax decreases to 45 ° C, which allows it to be pressed more strongly into the spongy substance of the bone;

- if there are cracks in the bone or thinning of the spongy substance, it is necessary to transfer the device to the third mode of operation (heating the wax to 55 ° C), which allows you to close the smallest pores in the bone, without applying additional pressure;

- at the end of the operation, the lid is removed from the device and the remaining wax is removed during the sterilization process of the instrument.

Claims (1)

A device for providing hemostasis during neurosurgical operations, which is a 5 ml surgical wax melting tank equipped with a hermetically sealed lid, a heating element, a temperature sensor, a dispenser, a control unit and an autonomous power supply, characterized in that the heating element is made in the form of a rod, which is located inside the tank at an equal distance from its side walls, the temperature sensor is made in the form of a ring and is located in front of the dispenser, the dose the torus allows you to release a portion of preheated wax with a volume of 0.3 ml, the control unit controls the heating temperature of the heating element in three operating modes, while the first mode corresponds to heating the wax to 45 ° C, the second mode corresponds to heating the wax to 50 ° C, the third mode corresponds to heating wax up to 55 ° C, and the power source allows you to use the device for 30 minutes of battery life.

Images