Side-supporting type tectorial membrane support
A technology of covered stents and side stents, which is applied in stents, medical science, surgery, etc. It can solve the problems of not being able to cover the side of the small arterial curvature, and achieve good surgical quality, guarantee surgical quality, and flexible installation.
Active Publication Date: 2013-01-30
张学民
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Problems solved by technology
[0005] Also have at the same time, in order to facilitate the installation with the delivery device, the whole circumference of the head end of the current side-branch type covered stent is set as a bare stent without a covering, but the bare stent without a covering can not reduce the small arteries that are prone to lesion. curved side coverage
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[0030] The present invention will be described in detail below in conjunction with the accompanying drawings. figure 1 It is a schematic structural view of the side-branched stent-graft of the present invention, including a main stent 1 and a side-stent mounting seat 30 .
[0031] The main support 1 is composed of a skeleton 10 and a covering film 20, and is in the shape of a straight cylinder or tapered cylinder as a whole. The skeleton 10 is a metal skeleton, the length of which can be, for example, 160-200mm, and the diameter, for example, can be 22-42mm. figure 1 shown on the upper end) diameter can be compared with the end ( figure 1 The lower end shown) can also be smaller than the tip diameter, and the tip can be with or without a bare stent. The main bracket 1 can be divided into a semi-bare bracket part a, a bracket main body part b and an arc-shaped concave part c. The skeleton 10 is composed of a head-end skeleton 11 located at the semi-bare stent part a and a ...
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The invention relates to a side-supporting type tectorial membrane support. The side-supporting type tectorial membrane support comprises a main support, a side support and a soft connection portion, wherein the main support and the side support are connected by the soft connection portion, the main support comprises a semi-exposed support portion and a built-in side support mounting seat, the semi-exposed support portion is arranged on the head end side of the main support, a framework is arranged on the full circumferential portion of the head end side of the main support, a tectorial membrane is arranged in a half-circumference range of the head end side, and the other half-circumference is an exposed support. The head end side with the tectorial membrane within the half-circumference range is closely attached to a small inner curvature wall of an artery. The side support mounting seat is arranged on the inner side of the main support, one end of the soft connection portion is connected with the side support mounting seat while the other end thereof is connected with the side support. The tectorial membrane at the head end of the side-supporting type tectorial membrane support can completely cover a small curvature side of an arch portion of the artery of a pathological position, and by the aid of the built-in side support mounting seat, the outer wall of the main support and the inner wall of an arch blood vessel of the artery can be tightly jointed, so that the pathological position can be completely covered and good operation quality is guaranteed.
Description
technical field [0001] The invention relates to a minimally invasive interventional medical device, in particular to a side branch type covered stent. Background technique [0002] The use of covered stents in the treatment of aortic diseases is a major advance in aortic surgery in recent years, and its indications include aortic arch aneurysm and thoracoabdominal aortic aneurysm. This technique greatly reduces the surgical trauma, and the patient recovers faster, but there are still shortcomings. Next, the aortic arch will be described. [0003] The stent grafts currently used in the aortic arch are straight cylindrical. Figure 5 An example is shown for aortic disease, when the proximal aneurysm neck is close to the left subclavian artery, in order to obtain a sufficiently long anchoring zone to avoid displacement of the stent-graft due to high-speed blood flow in the aorta , It is often necessary to seal the left subclavian artery together. Although the covered stent c...
Claims
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IPC IPC(8): A61F2/856A61F2/86A61B17/12
Inventor 张学民
Owner 张学民