Conveying device

Abstract

The invention discloses a conveying device which comprises a sheath core tube assembly, the sheath core tube assembly comprises an outer sheath core tube and an inner sheath core tube, the far end of the inner sheath core tube extends out of the far end of the outer sheath core tube and can axially move relative to the outer sheath core tube, a fixing anchor is arranged at the far end of the outer sheath core tube and comprises a plurality of clamping jaws, and the clamping jaws are arranged on the outer sheath core tube. A guide head is arranged at the far end of the inner sheath core tube, a containing part is arranged at the near end of the guide head, the containing part can contain the clamping jaws, and the length of at least one clamping jaw is different from that of the other clamping jaws. According to the conveying device, the multiple wave crests on the support assembling part can be fixed in batches through the clamping jaws with the length differences, so that the fixing difficulty of the multiple wave crests is reduced, meanwhile, the multiple wave crests can be gradually released in batches, and the release pressure of the multiple wave crests at the release moment is reduced.

Description

technical field [0001] The present invention relates to the technical field of interventional medical devices, in particular to a delivery device. Background technique [0002] This section provides merely background information related to the present application and is not necessarily prior art. [0003] Before the stent is implanted into human tissue, it needs to be compressed and assembled into the delivery device. When a stent with a bare wave ring is assembled through the fixed anchor and guide head on the delivery device, it is difficult to fully assemble the bare wave ring on the stent. Hanging on the fixed anchor, especially when assembling the last 1 to 3 wave crests on the bare wave ring, it is easy to cause the wave crests that have been hung on the fixed anchor to jump out. In addition, in the process of hanging the bare wave ring on the fixed anchor, the bare wave ring is easily deformed, which leads to the scrapping of the stent. Moreover, after the stent is ...

AI Technical Summary

Problems solved by technology

[0003] Before the stent is implanted into the human tissue, it needs to be compressed and then assembled into the delivery device. When the stent with the bare wave coil is assembled through the fixed anchor and the guide head on the delivery device, it is difficult to complete the bare wave coil on the stent. Hanging on the fixed anchor, especially when assembling the last 1 to 3 peaks on the bare wave ring, it is easy to cause the wave peaks already hung on the fixed anchor to jump out

In addition, during the process of hanging the bare wave coil on the fixed anchor, the bare wave coil is easily deformed, resulting in scrapping of the bracket

Moreover, after the bracket assembly is completed, the contact between the guide head and the fixed anchor on the conveying device is mainly surface contact. This will further increase the difficulty of passing the unhooked bare wave coil through the gap between the fixed anchor and the seeker, which is not conducive to the assembly of other bare wave coils

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