diff --git a/unilabos/registry/devices/liquid_handler.yaml b/unilabos/registry/devices/liquid_handler.yaml
index 2bf975de..bcddae55 100644
--- a/unilabos/registry/devices/liquid_handler.yaml
+++ b/unilabos/registry/devices/liquid_handler.yaml
@@ -72,7 +72,7 @@ liquid_handler:
         feedback: { }
         result: { }
       mix:
-        type: DPLiquidHandlerMix
+        type: LiquidHandlerMix
         goal:
           targets: targets
           mix_time: mix_time
@@ -255,24 +255,6 @@ liquid_handler:
     - name
     additionalProperties: false
 
-dp_liquid_handler:
-  description: 通用液体处理
-  class:
-    module: unilabos.devices.liquid_handling.action_definition:DPLiquidHandler
-    type: python
-    status_types:
-      status: String
-    action_value_mappings:
-
-  schema:
-    type: object
-    properties:
-      name:
-        type: string
-        description: 物料名
-    required:
-    - name
-
 liquid_handler.revvity:
   class:
     module: unilabos.devices.liquid_handling.revvity:Revvity
diff --git a/unilabos/ros/nodes/base_device_node.py b/unilabos/ros/nodes/base_device_node.py
index 078cb470..335fee85 100644
--- a/unilabos/ros/nodes/base_device_node.py
+++ b/unilabos/ros/nodes/base_device_node.py
@@ -748,7 +748,7 @@ class ROS2DeviceNode:
         self.resource_tracker = DeviceNodeResourceTracker()
 
         # use_pylabrobot_creator 使用 cls的包路径检测
-        use_pylabrobot_creator = driver_class.__module__.startswith("pylabrobot") or driver_class.__name__ == "DPLiquidHandler"
+        use_pylabrobot_creator = driver_class.__module__.startswith("pylabrobot") or driver_class.__name__ == "LiquidHandlerAbstract"
 
         # TODO: 要在创建之前预先请求服务器是否有当前id的物料，放到resource_tracker中，让pylabrobot进行创建
         # 创建设备类实例