RU97260U1 - TROACAR TUBE FOR MINIMALLY INVASIVE SURGERY - Google Patents

Abstract

 A trocar tube for minimally invasive surgery, which is a hollow cylinder, characterized in that it further comprises an internal hollow cylinder located coaxially to the external, with the ability to move along and around a common axis, each of the cylinders has a longitudinal cutout for the entire length, and the length of the outer cylinder is less than the length of the inner, the distal end of which is beveled, a clamp is made on the inner cylinder, and two or more grooves are made on the outer cylinder.

Description

The utility model relates to medicine, is a surgical tool that provides entry into the cavity during minimally invasive operations, and can be used in all areas of medicine.

Various trocars for surgery are known.

A common constructive feature is a tube made in the form of a hollow cylinder for holding instruments in a patient’s body cavity for therapeutic or diagnostic purposes. For example, a trocar for thoracocentesis is Medicon Instruments. Catalog No 12. Surgicon instruments and appliances. Medicon, Tuttlingen. Germany, 1986.

The closest is the Olympus trocar tube (A5553, Olympus catalog W7.055.388 1.2_11 / 03).

However, this trocar tube has the following disadvantages.

1. Despite the large diameter (20 mm), it does not allow the use of several instruments at the same time in the process of surgical intervention, which leads to the need to use additional ports for institution of instruments. This increases the injuries of the intervention, complicates the manipulation and reduces the cosmetic effect of minimally invasive interventions.

2. This tool does not allow visual control over manipulations in body cavities when instruments are inserted through its lumen.

We first developed a trocar tube for minimally invasive operations, which allows you to enter several instruments at the same time while maintaining visual control over the performed manipulations.

The proposed design is shown in figure 1, where

1 - inner cylinder,

2 - longitudinal cutout of the inner cylinder,

3 - external cylinder,

4 - longitudinal cutout of the outer cylinder,

5 - latch

6, 7 - retainer grooves.

The inner cylinder (1) has a longitudinal cut (2) for the entire length, up to 1/3 of the circumference. The inner cylinder is longer than the outer and its end is beveled at an angle from 0 to 45 ° to the axis of the cylinder for less traumatic passage of the device through the tissues. The outer cylinder (3) also has a longitudinal cutout (4) for the entire length corresponding in width to the cutout of the outer cylinder. Moreover, the outer diameter of the inner cylinder is less than the inner diameter of the outer cylinder, which allows the inner cylinder to move inside the outer cylinder, both along the axis and around the axis. The inner cylinder (1) has a lock (5), and the outer cylinder (3) has several grooves, for example two (6, 7).

Figure 2 developed trocar tube in assembled form: a - with a closed neckline, 6-with an open neckline.

The device operates as follows. Before using the device, the inner cylinder (1) is inserted into the outer cylinder (3), so that the cutout in the outer cylinder is closed (Fig. 2 a). Then, through a previously performed surgical access in the projection of the organ of interest to the surgeon, the device is inserted into the body cavity. Next, an instrument for holding the organ is inserted into the trocar tube. After capturing the organ, the inner cylinder (1) is rotated and fixed relative to the outer (3) using the lock (5) inserted into the groove (6) or (7), so that the cutouts of the cylinders coincide (Fig.2 b). Then, the instrument with the retained organ is removed through the notch beyond the trocar tube, leaving the organ in the surgeon's field of vision. In the course of further manipulations, the cutout of the device is closed. Subsequently, other tools can be introduced through the trocar tube to carry out the necessary manipulations under visual control, which, if necessary, can also be moved outside the device. In addition, fixing the retainer (5) of the inner cylinder (1) in the grooves (6) or (7) of the outer cylinder (3) allows you to change the length of the device and the penetration depth in the body cavity.

As can be seen from the description, the proposed trocar tube design allows the use of several instruments while maintaining visual control during surgery. That is, devoid of the disadvantages of the known devices.

Claims (1)

A trocar tube for minimally invasive surgery, which is a hollow cylinder, characterized in that it further comprises an internal hollow cylinder located coaxially to the external, with the ability to move along and around a common axis, each of the cylinders has a longitudinal cutout along the entire length, the length of the outer cylinder being less the length of the inner, the distal end of which is beveled, a clamp is made on the inner cylinder, and two or more grooves are made on the outer cylinder.