Conveying device
A technology of delivery device and sheath core, applied in stents and other directions, can solve the problems of difficulty in bare wave circles, jumping out of wave peaks, increased difficulty, etc., and achieves the effect of reducing the difficulty of fixing and reducing the release pressure.
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Embodiment 1
[0033] like Figure 1.1 As shown, delivery device 10 includes catheter 11 , sheath tube assembly 12 and handle 13 . The handle 13 is disposed at the proximal end of the catheter 11 , the sheath core tube assembly 12 passes through the interior of the catheter 11 , and the proximal end of the sheath core tube assembly 12 is fixed on the handle 13 , and the operator can realize the catheter 11 by operating the handle 13 . Relative movement with the sheath core tube assembly 12 . After the stent is assembled on the sheath core tube assembly 12 , the purpose of assembling the stent into the catheter 11 of the delivery device 10 is achieved through the relative movement between the catheter 11 and the sheath core tube assembly 12 in the axial direction.
[0034] like Figure 1.2 As shown, the sheath core tube assembly 12 includes an inner sheath core tube 121 and an outer sheath core tube 122 . Specifically, the distal end of the inner sheath core tube 121 protrudes from the dist...
Embodiment 2
[0057] like Figure 8.1 and Figure 8.2 As shown, in the delivery device of this embodiment, a protrusion 229 is provided on the part of the guide head 224 that is in contact with the fixed anchor 223 . The inner surface is in contact with the upper surface of the protrusion 229, thereby leaving a space for the bare wave ring to move, but the protrusion can also prevent the bare wave ring from detaching from the moving space. At the same time, the protrusions 229 make interference contact between the claw and the receiving portion, which increases the friction between the guide head 224 and the fixing anchor 223, and avoids the separation of the guide head 224 and the fixing anchor 223, which causes the separation of the bare wave ring. Phenomenon.
[0058] Specifically, according to the embodiment of the present application, the outer surface of the accommodating portion 225 facing the inner surface of the claws (that is, the bottom surface of the accommodating portion) is ...
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