输送装置及左心耳闭合系统

Abstract

本实用新型涉及一种输送装置及左心耳闭合系统，输送装置包括依次连接的控制手柄、连接管和头端，控制手柄包括壳体、方向控制机构和阻尼结构，方向控制机构与头端连接以带动头端在设定平面内转动，阻尼结构与方向控制机构配合，阻尼结构被构造成响应于方向控制机构或头端的动作，并提供与方向控制机构施加给头端的力方向相反的力，阻尼结构提供的力的上限小于或等于方向控制机构带动头端转动所需力的临界值。本实用新型提出的输送装置在不影响头端正常转动调向的基础上能够防止头端发生意外转动，保证了头端的稳定性，并且提高了操作便捷性，解决了现有的输送装置调向操作繁琐的问题。

Claims

1. A delivery device characterized by: The delivery device comprises a control handle, a connecting tube and a head end connected in sequence, the control handle comprises a housing, a direction control mechanism and a damping structure, the direction control mechanism is connected with the head end to drive the head end to rotate in a set plane, the damping structure cooperates with the direction control mechanism, the damping structure is configured to respond to the action of the direction control mechanism or the head end and provide a force opposite to the force direction applied by the direction control mechanism to the head end, and the upper limit of the force provided by the damping structure is less than or equal to the critical value of the force required for the direction control mechanism to drive the head end to rotate.

2. The delivery device of claim 1, wherein, The direction control mechanism comprises a direction control end and a direction control line connecting the head end and the direction control end, the damping structure cooperates with the direction control line, and the damping structure is configured to respond to the action of the direction control line or the head end and provide a force opposite to the force direction applied by the direction control line to the head end.

3. The delivery device of claim 2, wherein, The damping structure comprises a silica gel piece and a compression piece, the direction control line extends axially and passes through the silica gel piece, and the compression piece is configured to extrude the silica gel piece to apply force to the direction control line.

4. The delivery device of claim 3, wherein, The silica gel piece is provided as a silica gel plug, the silica gel plug is at least partially clamped in the connecting tube, and the direction control line penetrates the silica gel plug.

5. The delivery device of claim 3, wherein, The silica gel piece is provided as a silica gel block in the housing, and the direction control line penetrates the silica gel block.

6. The delivery device of claim 3, wherein, The silica gel piece comprises a plurality of silica gel pads arranged in the housing, and the plurality of silica gel pads are arranged in parallel, and the direction control line is arranged between adjacent silica gel pads.

7. The delivery device of claim 5 or 6, wherein, The compression piece comprises a first pressing plate, a second pressing plate and a bolt, the first pressing plate and the second pressing plate are respectively clamped on opposite sides of the silica gel piece, and the bolt penetrates and is connected to the first pressing plate, the silica gel piece and the second pressing plate.

8. The delivery device of claim 2, wherein, The damping structure comprises a winding column arranged in the housing, and the direction control line is partially wound on the winding column.

9. The delivery device of claim 1, wherein, The direction control mechanism comprises a direction control end and a direction control line connecting the head end and the direction control end, the damping structure cooperates with the direction control end, and the damping structure is configured to respond to the action of the direction control end and provide a force opposite to the force direction applied by the direction control end to the direction control line.

10. The delivery device of claim 9, wherein, The direction control end comprises a first direction control end and a second direction control end, the first direction control end and the second direction control end respectively comprise a connected turntable, a push rod and a pressing key, two turntables are coaxially arranged, and in the working condition that two push rods are rotated to opposite limit positions, two pressing keys are configured to be simultaneously pressed by the user's hands to limit the action of the first direction control end and the second direction control end.

11. The delivery device of claim 1, wherein, The head end comprises a first clamping arm, a second clamping arm arranged in X shape with the first clamping arm and hinged with the first clamping arm, and a torsion spring located between the first clamping arm and the second clamping arm, two free ends of the torsion spring respectively abutting against the first clamping arm and the second clamping arm to exert a torsion force, the torsion force increasing with the increase of the included angle between the first clamping arm and the second clamping arm.

12. A left atrial appendage closure system characterized by, The left atrial appendage closure system comprises a closure clip and the delivery device according to any one of claims 1-11, the closure clip being connected to the head end of the delivery device.

Images