RU197542U1 - FOGARTY CATHETER INTRAVASCULAR INTRODUCTION - Google Patents

Abstract

The utility model relates to medicine, namely to vascular surgery, and more specifically to devices that allow the Fogarty catheter to pass through a narrow arteriotomy hole in small diameter arteries atraumatically and safely during reconstructive surgery, thrombectomy. The cannula is a tube with a through longitudinal hole about 80 mm long and 3 mm in diameter, bent at an angle of 90 °, the working end of which ends with an olive made in the form of a truncated cone. The device allows for reliable guiding of the Fogarty catheter into the artery through a narrow arteriotomy opening; its easy removal after the catheter; reduce the risk of additional trauma to the walls of the artery and perforation of the walls of the artery; convenience of manipulation in conditions of limited wound space.

Description

The utility model relates to medicine, namely to vascular surgery, and more specifically to devices that allow the Fogarty catheter to pass through a narrow arteriotomy hole in small diameter arteries atraumatically and safely during reconstructive surgery, thrombectomy, thereby reducing the risk of trauma to the artery and prevent perforation of its posterior wall.

Known classic grooved probe, which is used in general surgery (http://darleys-surgical.com/probes_2106_330).

Its disadvantages are a direct stroke, the absence of bends, which does not allow manipulation in conditions of limited space; a sharp tip that increases the risk of trauma to the artery.

Known groove probe in the modification of Doyen 145 mm (http://falconmedical.eu/produkt/director_fistula_grooved_doyen_curved_145mm.php).

Its disadvantages include too small bending of the working part along a plane that does not allow manipulation of the arteries, as well as a high risk of trauma to the posterior wall of the artery.

Known groove probe in the modification of Lockhart-Mummery 165 mm 90 °, having a bend along the plane of 90 ° (https://www.medicorkm.hu/surgical-instruments/probes/probes?page=6).

Its disadvantages include a too long curved part, which does not allow working in a small surgical wound.

All the above models, in addition, have a common drawback - too small bending of the working part around the circumference; during the Fogarty catheter, there is a risk of slipping off the probe and perforation of the artery wall.

Known hollow cannula for washing the vessel in the modification of Schmid 150mm, which has a spherical olive at the end (http://www.ecosurgical.com/product/l7-101-17-102-17-103-17-104-schmid-vessel- irrigating-cannulae).

The disadvantage is that the cannula has no bends and no outlet, which does not allow it to be removed from the vessel immediately after the installation of the Fogarty catheter. Also, due to the fact that the cannula has a spherical shape, there are difficulties when used on small diameter vessels.

Known hollow cannula for flushing the vessel in the modification of Vollmar 60mm, which has a small spherical olive on the middle working part and is connected to a syringe (https://www.surtex-instruments.co.uk/vollmar-vessel-irrigation-cannula-with-luer -lock-connection).

The disadvantage of this hollow cannula is that it does not have an outlet, which does not allow it to be removed from the vessel immediately after the installation of the Fogarty catheter.

Both of these models also have a drawback - the cannula is equipped with a Luer Lock-type connecting part, which prevents it from being used for the Fogarty catheter.

All presented models have a drawback - they are not adapted for intravascular catheter insertion.

The task of creating a utility model is to increase the usability in a limited wound space.

The technical result of the utility model is to ensure reliable passage of the Fogarty catheter into the artery through a narrow arteriotomy hole; easy removal of the cannula after the catheter; reducing the risk of additional trauma to the walls of the artery; no risk of perforation of the artery walls; convenience of manipulation in conditions of limited wound space.

This technical result is achieved by the fact that the cannula is a tube with a through longitudinal hole about 80 mm long and 3 mm in diameter bent at an angle of 90 °, the working end of which ends with an olive made in the form of a truncated cone.

The utility model is illustrated by graphic material, where in FIG. 1 shows a general view of a cannula 1 made in the form of a tube with a through longitudinal hole 2, bent at an angle of 90 °, the working end of which is provided with olive 3. In FIG. 2 shows the working end of the cannula 1 with olive 3 made in the form of a truncated cone. In FIG. 3 shows an example of intraoperative use of a cannula, where an artery 4, an arteriotomy opening 5, a Fogarty catheter 6 is shown.

In practice, the cannula for intravascular insertion of the Fogarty catheter works as follows. Intraoperatively, after artery 4 has been separated from the surrounding tissues and arteriotomy hole 5 has been made, a cannula is inserted into the artery through the hole obtained with the working end with olive 3. Through a longitudinal hole 2, a Fogarty 6 catheter (Fig. 3) of a suitable diameter is inserted into the artery necessary length. Then the cannula is removed from the artery, while the Fogarty catheter passes through the longitudinal through hole 2 and remains in the lumen of the artery.

The use of cannula is illustrated by a clinical example.

Patient K., 68 years old, was admitted to the vascular department of the RCCH with a diagnosis of Acute thrombosis of the popliteal, anterior tibial, posterior tibial artery of the left lower limb. Acute ischemia 2a st of the left lower limb. After examination and preoperative preparation, an operation was performed: thrombectomy from the popliteal artery, left lower limb arteries, drainage of the postoperative wound. Intraoperatively accessed through the Ken line on the upper third of the left lower leg. The popliteal artery with a diameter of 5 mm was taken on the holders, after clamping it, a transverse arteriotomy was performed with a length of 4 mm above the trifurcation by 10 mm. A cannula is installed in the produced hole with the working end with olive inward. A Fogarty catheter 3f and 4f was inserted through the cannula into the distal and proximal bed, thrombotic masses were removed, and a satisfactory antegrade and retrograde blood flow was obtained. Immediately after insertion of the Fogarty catheter, the cannula was safely removed using a longitudinal hole on it. When using the cannula, no additional trauma to the artery wall was observed. The arteriotomy opening is sutured with interrupted sutures. In the postoperative period, complications were not observed. The patient was discharged to the outpatient stage of treatment on the 8th day.

Claims (1)

The cannula for intravascular insertion of the Fogarty catheter, which is a hollow tube with a through longitudinal hole, the cannula has a length of about 80 mm, a diameter of 3 mm and is bent at an angle of 90 °, and its working end ends with an olive made in the form of a truncated cone.

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