一种拉线快速锁定型猪尾引流管

Abstract

本实用新型涉及医用引流管技术领域，公开了一种拉线快速锁定型猪尾引流管，包括引流管、引流接头、拉线和锁定套管，引流管的一端与引流接头相连，另一端设置有猪尾段，锁定套管套于引流接头外侧并沿引流接头的轴向移动设置，引流接头上开设有供拉线端部穿出的内出线孔，锁定套筒内具有与拉线端部相连的连接部和远离连接部设置的密封部，连接部与内出线孔位置相对应时，锁定套筒处于解锁状态，密封部与内出线孔位置对应时，所述锁定套筒处于锁定状态，锁定套筒从解锁状态移动至锁定状态，以带动拉线在引流管内拉直并控制猪尾段弯曲定型。本实用新型对拉线一次锁定并收纳到位，保证锁定后的拉线不外漏，从而完全避免拉线受到的牵拉风险。

Claims

1. A pigtail drainage tube with quick locking type pull wire, comprising a drainage tube, a drainage connector and a pull wire, one end of the drainage tube is connected with the drainage connector, the other end is provided with a pigtail section, a threading hole is formed on the pigtail section for the pull wire to pass into the drainage tube, characterized in that, It also includes a locking sleeve, which is fitted around the outside of the drainage connector and is movable along the axial direction of the drainage connector. The drainage connector has an inner outlet hole for the end of the pull wire to pass through. The locking sleeve has a connecting part connected to the end of the pull wire and a sealing part disposed away from the connecting part. When the connecting part corresponds to the position of the inner outlet hole, the locking sleeve is in an unlocked state. When the sealing part corresponds to the position of the inner outlet hole, the locking sleeve is in a locked state. The locking sleeve moves from the unlocked state to the locked state to straighten the pull wire in the drainage tube and control the bending and shaping of the pig tail section.

2. The stay wire quick locking pigtail drainage tube according to claim 1, characterized in that, A locking groove is provided on the outer wall of the drain connector located outside the inner outlet hole. The locking groove is an annular groove. The sealing part is a sealing ring fixed on the inner wall of the locking sleeve. The sealing ring is interference-fitted with the annular groove.

3. The stay wire quick locking pigtail drainage tube according to claim 1 or 2, characterized in that, The connecting part is an outgoing wire hole opened at the upper end of the locking sleeve. The outgoing wire hole is a countersunk hole with a large-size cavity facing away from the drain connector. After the end of the pull wire passes through the countersunk hole, it forms a wire knot and is fixed in the large-size cavity of the countersunk hole.

4. The stay wire quick locking pigtail drainage tube according to claim 2, characterized in that, The inner outlet hole is filled with a sealant, and the pull wire passes through the sealant and exits the inner outlet hole.

5. The stay wire quick locking pigtail drainage tube according to claim 2 or 4, characterized in that, The locking sleeve includes a sleeve body and an elastic locking sleeve. The lower end of the sleeve body has an installation groove. The upper end of the elastic locking sleeve is fixedly connected to the installation groove via an annular step portion. The sealing ring is formed by the inner side of the annular step portion extending radially.

6. The stay wire quick locking pigtail drainage tube according to claim 2, characterized in that, The drainage connector has a guide portion between one end of the drainage tube and the locking groove, and the outer wall of the guide portion has an outer conical surface that gradually decreases in size in the direction away from the locking groove.

7. The stay wire quick locking pigtail drainage tube according to claim 1, characterized in that, The drainage connector has a pagoda-shaped connector at one end for connecting to the drainage tube, and the lower end of the locking sleeve has a flared inner cavity that fits against the outer wall of the drainage tube connected to the pagoda connector.

8. The stay wire quick locking pigtail drainage tube according to claim 1 or 2, characterized in that, The drain connector has a locking tongue that moves radially inward under external force. The front end of the locking tongue has a conical tooth. An annular groove is provided on the inner side of the upper end of the locking sleeve. When the locking sleeve is in the locked state, the conical tooth enters the annular groove and cooperates with it.

9. The stay wire quick locking pigtail drainage tube according to claim 8, characterized in that, The drainage connector includes an upper connector and a lower connector. The upper connector has a slot on its inner side, and the lower connector has a plug-in part that is fixed to the slot. The lower end of the slot has two sets of deformation slots along the circumference. The upper connector body between each set of deformation slots forms the locking tongue. The surface of the plug-in part has a receiving groove for the locking tongue and the conical locking teeth to move radially inward.

10. The stay wire quick locking pigtail drainage tube according to claim 1 or 2, characterized in that, A limit ring is fixed to the outside of the drainage tube, and the locking sleeve is in the unlocked state, with the lower end face of the locking sleeve abutting against the upper end face of the limit ring.

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