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Stent delivery device for bifurcated blood vessels and method based on device

A technology for vascular stents and delivery devices, which is applied in the field of medical devices, can solve the problems of stent placement guides, stent delivery positioning, etc., and achieve the effects of facilitating stent delivery, convenient operation, and simple structure

Pending Publication Date: 2020-07-31
FUWAI HOSPITAL CHINESE ACAD OF MEDICAL SCI & PEKING UNION MEDICAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a bifurcated double-lumen delivery tube for vascular stents, which solves the problem of stent delivery positioning in bifurcated vessels and the placement and guidance of bifurcated stents.

Method used

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  • Stent delivery device for bifurcated blood vessels and method based on device
  • Stent delivery device for bifurcated blood vessels and method based on device
  • Stent delivery device for bifurcated blood vessels and method based on device

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Such as figure 1 , 2 As mentioned above, the bifurcated blood vessel stent delivery device in this embodiment includes a delivery tube 1, a vascular stent 2, a guide wire tube 5 and a handle 3, wherein the delivery tube 1 is an elongated member with a proximal end, a distal end and the longitudinal axis between them, the delivery tube 1 is divided into a main lumen 11 and a secondary lumen 12 by a lumen wall 13, the main lumen 11 is defined by the delivery tube and extends from the proximal end to the The distal end is closed by the guide wire tube 5 at the distal end, and the main lumen 11 is provided for the main wire 6 to pass through the distal end of the guide wire tube 5 and pass through the vascular stent 2. The outlet hole 14, the auxiliary lumen 12 is defined by the delivery tube and extends from the proximal end to less than the distal end, and is provided with an outlet 15 less than the distal end, the handle 3 is connected to the The proximal end of the de...

Embodiment 2

[0043] The difference between this embodiment and the first embodiment is that the delivery tube 1 is provided with a spiral groove 16 around the outer contour of the delivery tube 1 between the outlet of the auxiliary lumen 12 and the distal end. Since the length of the delivery tube entering the blood vessel is longer, it is more difficult to turn the distal end, and the direction and angle of the bifurcation at the vascular lesion are not fixed, which will cause the outlet of the auxiliary lumen at the distal end to not correspond to the bifurcation, and it is difficult to align Bifurcation for stent delivery. The use of the design structure of the spiral groove can make the auxiliary guide wire coming out of the distal outlet of the auxiliary lumen be guided by the spiral groove and the inner wall of the blood vessel, and can advance spirally and enter the bifurcation road, which facilitates the delivery of the vascular stent.

[0044] Preferably, the helical groove around...

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Abstract

The invention discloses a stent delivery device for bifurcated blood vessels and a method based on the device and belongs to the field of medical devices. The device comprises a delivery tube, a bloodvessel stent, a handle and a guide wire tube, wherein the delivery tube is a long component, the inside of the delivery tube is divided into a main tube cavity and an auxiliary tube cavity by a tubecavity wall, the main tube cavity is closed by the guide wire tube at the far end, a leading-out hole used for penetrating a main guide wire through the far end of the guide wire tube and penetratingout the main guide wire after the main guide wire exceeds the blood vessel stent is formed in the main tube cavity, an outlet is formed in the part, not reaching the far end, of the auxiliary tube cavity, the handle is connected to the near end of the delivery tube and is communicated with the main tube cavity, a guide wire barrel used for penetrating the auxiliary guide wire and extending the auxiliary guide wire to the auxiliary tube cavity is arranged on the handle, the blood vessel stent and an expanding part communicated with the main tube cavity and used for expanding the blood vessel stent are arranged at the far end of the delivery tube, and a yield port allowing the auxiliary guide wire to penetrate out is reserved in the position, opposite to the outlet of the auxiliary tube cavity, of the blood vessel stent. The device can deliver the stent to the bifurcated blood vessels and has the advantages of being simple in structure and convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and relates to a bifurcated blood vessel stent delivery device and a method thereof, which are suitable for use in clinical delivery of vascular stents. Background technique [0002] It is known that stents can be placed within the vasculature using endovascular techniques for the treatment of diseased vessels. Known applications of stents include the treatment of stenotic and atherosclerotic lesions in coronary, peripheral, and cerebral vasculature. Stents are usually made of materials with certain strength and flexibility, such as tantalum, medical stainless steel, and nickel-titanium alloy, and are processed into a tube network structure by engraving technology, which can be left in human blood vessels for a long time or temporarily. The stent is based on the balloon expansion of the lumen, and the stent placed in the diseased segment is designed to resist the inner wall of the blood ...

Claims

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Application Information

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IPC IPC(8): A61F2/954A61F2/966A61F2/958A61F2/82A61F2/91
CPCA61F2/82A61F2/91A61F2/954A61F2/958A61F2/966
Inventor 叶绍东唐熠达
Owner FUWAI HOSPITAL CHINESE ACAD OF MEDICAL SCI & PEKING UNION MEDICAL COLLEGE