Liver segment positioning catheter
A catheter and catheter technology, applied in the field of hepatobiliary surgery, can solve problems such as difficulty in success, worsening disease, and difficulty in manipulation
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Embodiment 1
[0023] Example 1: Determination of the 7th segment of the liver, which is suitable for 7-segment resection
[0024] 1. After the operation begins, perform distal ligation through the right gastroepiploic vein, insert the guide wire 9 into the catheter 1, and under the guidance of the guide wire 9, place the balloon unit of the liver segment positioning catheter from the proximal end. entry vein;
[0025] 2. The operator guides the balloon unit into the right or left portal vein branch by hand;
[0026] 3. After the balloon unit is placed in the right portal vein, it is continuously fed to the end of the portal vein, and the front end airbag c1 is inflated through the gas injection port B1. At this time, it is very simple to use B-ultrasound to detect on the surface of the liver. It is obtained whether the position of the balloon unit is the right anterior lobe of the liver or the right posterior lobe of the liver;
[0027] 4. As shown in Figure 3, it is assumed that the ball...
Embodiment 2
[0031]Example 2 Determination of the fifth segment of the liver
[0032] 1. The liver segment positioning catheter is located in the right anterior lobe liver for the first time, and the positioning of the fifth and eighth segment livers is the same as that of the seventh segment described in Example 1 above, and the determination steps are the same;
[0033] 2. If the assumptions in Example 1 are continued, and the first liver segment positioning catheter is positioned in the right posterior lobe liver, the following steps are performed:
[0034] ① After inflating through the air supply port B1, air supply port B2, air supply port B3 and air supply port B4 in sequence, and then through the liquid supply port A1, liquid supply port A2, liquid supply port A3 and liquid supply port A4, respectively inject Gradual dilution of melanin until the right anterior staining occurs, then it is determined that the outlet ax is the channel leading to the branch of the right anterior portal...
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