Due to many vascular branches on the supra-hepatic vena cava (SHVC) and infra-hepatic vena cava (IHVC), in the whole procedures of preparation of liver donation, preparation of hepatic vena cava (HVC) is the most key and troublesome step. Magnetic Spiderman (MS) is a novel surgical instrument, designed and created to solve the vital problems of preparation of liver donation's HVC. Therefore, the aim of this study is to evaluate the feasibility and security of MS when using it prepare the liver donation's HVC.
From January 1 2020 to June 30 2020, after inclusion and exclusion, donors' livers will be divided to MS group and manual (MA) group. In MS group, MS grips the SHVC and IHVC, respectively. MS's magnets are adsorbed on the wall of the basin and MS can pull the HVC accordingly. By changing the position of MS on the wall of the basin, the attending can expose the surgical field that make the operation convenient. In MA group, assistants use vessel forceps to pull the HVC according to the attending's requirements. In both groups, right adrenal vein, phrenic veins and other branches of the HVC are isolated and ligated, then SHVC and IHVC where MS's clamps gripped are cut off. After preparation, the SHVC and IHVC remain at least 1.5 cm. Excess diaphragms are removed. Outcomes of two groups are compared.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
20
Magnetic Spiderman (MS) is a novel surgical instrumentIt. It consists of a circular neodymium iron boron magnet packed in a stainless-steel case with a spring and a jagged clamp, which gives it a spider-like appearance.
First Affiliated Hospital of Xian JiaotongUniversity
Xi'an, Shaanxi, China
The number of damaged points on HVC
the number of damaged points on the HVC during the preparation
Time frame: measured at the time of the end of preparation HVC; up to 1 hour
Operation time
operation time of preparation of HVC
Time frame: measured at the time of the end of preparation HVC; up to 1 hour
The number of assistants
the number of assistants ensuring smooth operation according to attending's requirement
Time frame: measured at the time of the end of preparation HVC; up to 1 hour
Leak test
we use nondestructive vascular forceps to occlude the SHVC and IHVC, and perfused about 100 ml organ preservation solution through portal vein. If HVC and portal vein bulge and does not leak, the leak test is negative. Otherwise, it is positive.
Time frame: measured at the time of the end of preparation HVC; up to 1 hour
HVC hemorrhage
Whether HVC hemorrhage after implantation
Time frame: measured at the time of liver implanted to the recipient; up to 1 hour
Frequency of MS's detachment
the frequency of MS's detachment from the vasculature and basin wall.
Time frame: measured at the time of the end of preparation HVC; up to 1 hour
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