请阅读下面这张Markdown格式的表格并回答问题。同一行中不同列的单元格用'|'分隔，不同行的单元格用'
'分隔。

表格:
| 序号 | 器材代码 | 项目名称 | 医保类别 |
| --- | --- | --- | --- |
| 1.0 | C0033000002 | 瓣膜机械瓣 | 乙 |
| 2.0 | C0033000001 | 瓣膜生物瓣 | 乙 |
| 3.0 | C0033000003 | 瓣膜成形环 | 乙 |
| 4.0 | C0033000027 | 人工血管 | 乙 |
| 5.0 | C0031230037 | 冠脉支架 | 乙 |
| 6.0 | C0031230038 | 颅内血管支架 | 乙 |
| 7.0 | C0031230039 | 外周血管支架 | 乙 |
| 8.0 | C0031230040 | 颈动脉血管支架 | 乙 |
| 9.0 | C0031230041 | 血管覆膜支架 | 乙 |
| 10.0 | C0031230042 | 门静脉支架 | 乙 |
| 11.0 | C0031230043 | 静脉支架 | 乙 |
| 12.0 | C0031230044 | 破膜支架 | 乙 |
| 13.0 | C0031230045 | 中心血管支架 | 乙 |
| 14.0 | C0031230046 | 肾动脉支架 | 乙 |
| 15.0 | C0031230047 | 下肢动脉支架 | 乙 |
| 16.0 | C0031230048 | 胆管支架 | 乙 |
| 17.0 | C0031230049 | 气管支架 | 乙 |
| 18.0 | C0031230050 | 食管支架 | 乙 |
| 19.0 | C0031230051 | 输尿管支架 | 乙 |
| 20.0 | C0031000004 | 单腔起搏器 | 乙 |
| 21.0 | C0031000005 | 双腔起搏器 | 乙 |
| 22.0 | C0031230006 | 可调弯非温控射频消融导管 | 乙 |
| 23.0 | C0031230007 | 可调弯温控射频消融导管 | 乙 |
| 24.0 | C0033000008 | 人工半髋关节 | 乙 |
| 25.0 | C0033000009 | 人工全髋关节 | 乙 |
| 26.0 | C0033000010 | 人工膝关节后稳定型 | 乙 |
| 27.0 | C0033000011 | 人工膝关节 | 乙 |
| 28.0 | C0033000012 | 其它各类人工关节 | 乙 |
| 29.0 | C0033000013 | 6钉2棒1横联SINO胸腰椎后路内固定系统 | 乙 |
| 30.0 | C0033000014 | 4钉2棒1横联SINO胸腰椎后路内固定系统 | 乙 |
| 31.0 | C0033000015 | 脊柱钉棒系统 | 乙 |
| 32.0 | C0033000018 | 各型普通钢板 | 乙 |
| 33.0 | C0033000019 | 各型钛钢板 | 乙 |
| 34.0 | C0033000020 | 固定钢丝 | 乙 |
| 35.0 | C0033000021 | 骨水泥 | 乙 |
| 36.0 | C0033000022 | 各型普通螺钉 | 乙 |
| 37.0 | C0033000023 | 各型普通髓内钉 | 乙 |
| 38.0 | C0033000024 | 各型钛螺钉 | 乙 |
| 39.0 | C0033000025 | 各型钛髓内钉 | 乙 |
| 40.0 | C0033000026 | 各类外固定材料 | 乙 |
| 41.0 | C0033000028 | 体内置放材料封堵器 | 乙 |
| 42.0 | C0033000029 | 体内置放材料关闭器 | 乙 |
| 43.0 | C0033000030 | 体内置放材料钛夹 | 乙 |
| 44.0 | C0033000031 | 体内置放材料银夹 | 乙 |
| 45.0 | C0033000032 | 体内置放材料钉匣 | 乙 |
| 46.0 | C0033000033 | 人工植入类材料 | 乙 |
| 47.0 | C0033000016 | 人工硬质晶体 | 乙 |
| 48.0 | C0033000017 | 人工折叠晶体 | 乙 |
| 49.0 | C0031230034 | 各类介入导管、导丝及套件 | 乙 |
| 50.0 | C0031230035 | 各类造影导丝、导管 | 乙 |
| 51.0 | C0032300036 | 栓塞材料 | 乙 |
| 52.0 | C0033000067 | 支气管堵塞器 | 乙 |
| 53.0 | C0031200052 | 血液透析、腹膜透析一次性耗材 | 乙 |
| 54.0 | C0031300053 | 一次性各类穿刺、活检针（器） | 乙 |
| 55.0 | C0031230054 | 一次性普通导管 | 乙 |
| 56.0 | C0031230055 | 一次性球囊 | 乙 |
| 57.0 | C0031000056 | 一次性套管针及套件 | 乙 |
| 58.0 | C0031230057 | 一次性特殊导管 | 乙 |
| 59.0 | C1331370058 | 一次性特殊面罩 | 乙 |
| 60.0 | C0033000059 | 一次性特殊手术刀 | 乙 |
| 61.0 | C1231300060 | 一次性诊疗器械 | 乙 |
| 62.0 | C0013000061 | 一次性引流袋、管、瓶等 | 乙 |
| 63.0 | C0000000062 | 一次性电极 | 乙 |
| 64.0 | C0000000063 | 一次性电凝柄 | 乙 |
| 65.0 | C0013000064 | 一次特殊性输液器 | 乙 |
| 66.0 | C0033000065 | 生物胶、粘弹剂 | 乙 |
| 67.0 | C0031000066 | 宫内节育器 | 乙 |
| 68.0 | C1331000068 | 中心静脉、动脉压测压套件 | 乙 |
问题:
我想知道这个人工血管的医保类别是什么
Answer:
乙