RU2261648C1 - Device for illuminating wound canal in surgically treating the cases of intracerebral bleeding - Google Patents

Abstract

FIELD: medical engineering.

SUBSTANCE: device has a set of neurosurgical spatulas having fixing attachments, fiber-optic waveguide and casing having cam for fastening spatula. The casing has toothed wheel and gearing rack bar having screw for fastening light guide. The rack bar enables light guide to be smoothly movable in wound when rotating toothed wheel.

EFFECT: reduced risk of cerebral injuries; improved surgical space illumination.

2 cl, 7 dwg

Description

The invention relates to medicine, namely to surgical instruments, and can be used in neurosurgery.

Traditional sources of illumination for neurosurgical operations are illuminators with incandescent lamps that are mounted to the ceiling or are made in the form of mobile lamps. Headlamps are also used for local illumination of the surgical field [1].

The disadvantage of these devices is the forced, fixed position of the surgeon's head, when illuminating the bottom of a narrow deep wound channel.

To reduce brain injury, a decrease in the length of encephalotomy is required, which leads to the need for manipulation in a deep and narrow wound channel and requires the use of additional light sources.

The closest to the claimed device are spatulas with fiber optic fibers, consisting of a neurosurgical spatula (large and medium size) with rigidly fixed fiber fibers [2].

The disadvantage of these spatulas is:

- rigid fixation of the fiber, which does not allow you to change the intensity of illumination along the wound;

- an increase in the thickness of the spatula due to the diameter of the rigidly fixed fiber, which increases injuries during the formation of the wound channel;

- use only spatulas of large and medium size.

The technical result of the invention is to reduce brain injury during the formation of the wound channel, increasing the illumination of the surgical field both in the depth of the wound and throughout the wound channel, ease of use.

The technical result is achieved by the fact that the device further comprises a housing, a gear rack with a fiber mounting screw that smoothly moves the fiber in the wound channel, while the gear is rotating. Set of neurosurgical spatulas with fixing attachment.

The figure 1 shows a General view of the device, figure 2 - the device in disassembled form, figure 3 - the body with a hollow head, rear view, figures 4, 5, 6, 7 show the stages of Assembly of the device.

The device consists of a lightweight housing 1 having a hollow head 2, which has an oval cutout 3 on the front surface for installing a spatula mounting cam with a rotary lever 4, and a rectangular groove 5 for installing neurosurgical spatulas 6 with a fixing nozzle 7.

In the head of the housing 2 there is a through channel 8 for installing a gear rack with a fiber mounting screw 9, where the optical fiber 10 is fixed. On the side surface of the head 2 there is a through hole 11 for the axis 12 with a mounting nut 13. At the end of the head 2 there is a groove 14 for installation gear wheel 15.

The device is assembled as follows. A gear wheel 15 is placed in the groove 14 of the head of the housing 2, which is fixed by the axis of attachment of the gear wheel 12 through the hole 11 and secured by a nut 13 (figure 5). The cam of the spatula fastening with the rotary lever 4 is inserted into the oval cutout 3 of the head of the housing 2, then the spatula 6 with the fixing nozzle 7 is inserted and fixed by turning the rotary lever of the cam of the spatula 4 (figure 6). A light guide 10 is inserted into the gear rack with the screw for fastening the light guide 9, then the gear rack with the screw for fastening the light guide 9 and the light guide 10 is placed in the through channel 8 of the hollow head of the housing 2 until gearing with the gear wheel 15 is reached (Figure 7).

The device works as follows: after a standard craniotomy and dissection of the dura mater, encephalotomy is performed. Using a spatula 6, mounted in the groove 5 of the head of the body 2, a wound channel is formed until an intracerebral hematoma is detected. The thumb of the brush rotates the gear 15, which leads to a reciprocating movement of the rack of the gear 9 and the optical fiber 10 in the depth of the wound channel.

When sufficient light is reached, the hematoma is evacuated. Changing the direction of the light flux, inspect the cavity formed after removal of the hematoma.

The invention allows optimal coverage of the bottom of the wound, which makes it possible to fully examine the formed cavity and produce high-quality hemostasis; reduce the time of surgery, reduce brain injury due to the ability to remove hematomas from a narrow deep canal, facilitates the manipulation of surgical instruments, improves the results of surgical removal of intracerebral hematomas.

Sources of information

1. Description, instruction manual and passport of the binocular magnifier with fiber illuminator AC3.950.004 PS.

2. Voitina S.V. The use of instruments with fiber optic fibers in neurosurgery // Journal of Neurosurgery named after N.N. Burdenko - 1983. - No. 1. - S. 57-59.

Claims (2)

1. Device for illumination of the wound channel during surgical treatment of intracerebral hemorrhage, comprising neurosurgical spatulas and a fiber optic fiber, characterized in that it further comprises a body with a cam for attaching the spatula, with a gear wheel and a gear rack having a fiber mount screw, while the gear rack the transmission is installed with the possibility of smooth movement of the fiber in the wound during rotation of the gear, and the spatulas have fixing nozzles and are made in the form of a set. 2. The device according to claim 1, characterized in that the housing has a hollow head, and the cam is equipped with a rotary lever and is placed in an oval cutout on the front surface of the hollow head.

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