Screw-device for anastomosis

Abstract

The present invention, the screw-device, is a mechanical device for anastomosing hollow tube-like structures in the human body, such as blood vessels, bowels and ureters. It is thus not restricted to (micro-)vessels. It can be used in every surgical operation dealing with anastomosis and bypass operations. It allows anastomosing end to side or side to side. The screw-device is very easy to apply onto the vessel wall. Screwing is a fast technique saving operating time and requiring only basic microsurgical skills. The manufacturing is easy. Another advantage is that the screw-device can be mounted onto the receptor vessel without first opening and / or occluding this vessel. Later on, the receptor vessel wall can be opened with laser or scalpel. It should be understood that the foregoing is illustrative and not limiting, and that modifications may be made by those skilled in the art, without departing from the scope of the invention.

Description

[0001] This application is a continuation of PCT application no. PCT / BE2003 / 000126, designating the United States and filed Jul. 22, 2003; which claims the benefit of the filing date of PCT application no. PCT / BE03 / 00074, filed Apr. 28, 2003, both of which are hereby incorporated herein by reference.DESCRIPTION [0002] 1. Technical Field [0003] The present invention relates to an anastomosis device, more particularly, the SCREW-DEVICE is capable of anastomosing the end of a blood vessel to the side of another blood vessel (end to side—see FIG. 1) or the side of a blood vessel to the side of another blood vessel (side to side—see FIG. 2). BACKGROUND ART [0004] Vital Cells (in brain, heart, muscles, organs) demand nutrition, oxygen, energy (glucose) at a constant supply. These components are found in the blood which runs in a healthy vascular system. As a pump system, the heart ensures the circulation of the blood(nutrients) through the body. When there is a discrepancy between demand ...

AI Technical Summary

Benefits of technology

[0015] The opening of the receptor vessel wall can be done without occlusion of the receptor vessel or with a temporary occlusion of the receptor vessel. It can easily be combined with existing laser technologies for opening the receptor vessel in a non-occlusive manner.

Problems solved by technology

When there is a discrepancy between demand of oxygen or nutrients to the cell and the delivery capacity of the bloodstream to the cell, there is cell damage or even cell death. in some vital organs this warm ischemia before cell death is very short.

These highly complex operations require a competent surgical team, delicate instruments, advanced microsurgical equipment, magnifying loops, or—for neurosurgeons—an operating microscope.

This technique of suturing is time consuming and it demands extremely advanced microsurgical skills.

Moreover, it never results in a completely smooth joint, the stitches producing microscopic creases in the vessel wall.

Most of these devices are complex and time-consuming to apply (for example, in brain-surgery, a microvascular anastomosis takes on average, twenty to thirty minutes).

During this time, there is a high risk of bleeding and infection in all forms of microvascular surgery mentioned above.

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