Liver segment positioning catheter

Abstract

The invention relates to a liver positioning tube, formed by main body and guide wire made from macromolecule materials, wherein the front of main body has at least three ball bubbles; each ball bubble has liquid outlet of liquid tube, air outlet of air tube and air bubble; the liquid tube and air tube are in the main body; the liquid outlet and air outlet extend out the front tube of main body distantly; the air bubble through to the air inlet is on the outer tube of main body; the liquid inlet and the air inlet extend outside the main body; the wire is longer than liquid tube; the wire is smaller then liquid tube. The inventive tube can use multi-chamber multi-bubble to judge the integral interface of liver, to mark target liver in short time.

Description

technical field [0001] The invention belongs to the field of hepatobiliary surgery and relates to a catheter for positioning liver segments in hepatectomy. Background technique [0002] With the advancement of surgical technology and theory, the level of liver surgery has also been greatly improved. Diseases that were incurable in the past have been cured, and unresectable liver cancer can now be resected. Advances in surgical instruments, such as the clinical application of ultrasonic suction knife Cusa, bloodless scalpel TissueLink, etc., have led to the rapid development of liver resection technology, and doctors can perform resection with ease. With resection, there is less blood loss during the operation, minimal disturbance to the pathophysiology of the patient, and the operation can be passed safely and smoothly. The patient's economic affordability and perioperative management skills have been greatly improved compared with the past, which provide greater support fo...

AI Technical Summary

Problems solved by technology

The disadvantage is that the operation is difficult, and the operator needs to be familiar with and proficient in ultrasound technology and puncture knowledge

However, for surgeons, unless they are trained accordingly, the puncture is generally not easy to succeed, and in practice, even if the puncture is successful, it is easy to cause the reverse diffusion of methylene blue to expand the staining range or quickly excrete, and the boundary disappears; There is a risk of needle tract spread

[0008] 4) Follow the method of hepatic lobectomy, such as dissecting the first hepatic hilum, freeing the left and right hepatic hilums, and blocking them separately. This method can only determine the right anterior and right posterior blood vessels and block or cut them off, and cannot reach the branches of the liver segment, which is easy Causes too much healthy liver destruction

The existing resection instruments can fully meet the requirements of liver segment resection, but the judgment technology of liver segment has the disadvantages of poor judgment accuracy and / or high technical difficulty, difficult to control, and even the risk of worsening the disease

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