CN101579265B - aortic arch stent - Google Patents

Abstract

The present invention provides an aortic arch stent-type blood vessel, which includes a trunk and a branch part, wherein the branch includes a first branch, a second branch and a third branch, and the first branch and the second branch are respectively arranged at one end of the trunk and the third branch. The aortic arch stent-type blood vessel further includes a first module and a second module, the first module and the second module are tubular structures, respectively sleeved with the second branch and the third branch, so as to achieve endoluminal reconstruction of branch vessels . Three branches are provided at one end of the main trunk, so that the aortic arch stent-type blood vessels do not affect each other and can be adapted to different patients.

Description

aortic arch stent

technical field

The invention relates to the field of implantable blood vessels, in particular to an aorta-intervenable stent-type blood vessel. the

Background technique

The traditional treatment of aortic aneurysm is aortic aneurysm resection and artificial vascular grafting. Due to the high surgical risk, some patients are not suitable for such surgery. The advent of endovascular surgery technology provides the possibility of treatment for such patients. the

The basic principle of minimally invasive anterior endovascular repair for aortic aneurysm or aortic dissection is: compress the stent-type blood vessels in the delivery system, transport them to the vascular lesion through the delivery system and release them, and use the elasticity of the stent itself to make the The stent-type blood vessel expands, thereby isolating the lesion site such as an aneurysm or a dissection breach from the stent-type blood vessel lumen, and completes the repair of the vascular lesion. the

The prior art adopts a split-type stent-type blood vessel for endovascular repair of aorta and aortic arch, as shown in Figure 1, the split-type stent-type blood vessel includes a first module A, a second module B and a third module C , wherein the first module A and the second module B respectively include a cylindrical trunk and branches, and the third module C only includes a cylindrical trunk. The first module, the second module and the third module are connected in series respectively, that is, the main end of the second module B is connected with the end of the first module A with branch A1, and the end of the third module C is connected with the first module A. The second module B is provided with the other end of the branch B1 for socketing. Since the diameter of the trunk part of the split-type stent-type vessel is larger than that of the branch vessel of the aortic arch in the human body, the stent-type vessel can be fixed by combining the branch vessel of the aortic arch in the human body with the stent-type vessel. The split-type stent-type blood vessel is implanted in the aorta shown in Figure 2, and the connection and staggered part between the first module and the second module is located at the proximal end of the opening of the right common carotid artery and the innominate artery. If the patient's right common carotid artery The short distance between the position and the innominate artery will make each module unable to be used at the aortic arch; at the same time, the sequential connection between the modules increases the length of the connected stent, which requires operation in the longer ascending aorta and aortic arch At the same time, the sequential connection between modules also increases the mutual influence between each other and increases the possibility of internal leakage. the

Contents of the invention

The invention provides an aortic arch stent-type blood vessel, the main purpose of which is to be able to adapt to different types of patients, and at the same time avoid the mutual influence between parts of the aortic arch stent-type blood vessel during use. the

The present invention provides an aortic arch stent-type blood vessel, comprising a first module and a second module, as well as a trunk and branch parts, wherein the branches include a first branch, a second branch and a third branch, which are respectively arranged at one end of the trunk , the first branch is longer than the second branch and the third branch respectively; the first module and the second module are tubular structures, wherein the first module is socketed with the second branch, and the second module is socketed with the third branch catch. the

Preferably, the aortic arch stent-type blood vessel further includes markers at both ends of the first module for determining the socket position of the first module and the second branch. the

Preferably, the aortic arch stent-type blood vessel further includes markers at both ends of the second module for determining the socket position of the second module and the third branch. the

Preferably, said second module is arcuate. the

Preferably, the first branch is longer than the second branch and the third branch respectively. the

Preferably, the diameter of the first branch is larger than that of the second branch and smaller than that of the third branch. the

Preferably, one end of the first branch, the second branch and the third branch, and one end of the trunk fixed to the first branch, the second branch and the third branch are provided with markers. the

Preferably, the marker is X-ray opaque. the

Preferably, one end of the trunk is provided with a barbed structure for fixing the aortic arch stent-type blood vessel. the

In the present invention, the first branch, the second branch and the third branch are provided at the same end of the trunk, and the first module and the second module are respectively socketed with the second branch and the third branch, so that no Because the connection of one branch affects the work of other branches, and makes the branches closer, so as to adapt to different patients. the

Description of drawings

Figure 1 is a schematic diagram of the existing stent-type blood vessel structure;

Figure 2 Schematic diagram of the thoracic aorta;

Fig. 3 is a schematic diagram of the aortic arch stent-type vessel according to the first embodiment of the present invention;

Fig. 4 is the schematic diagram of the aortic arch stent-type blood vessel of the second embodiment of the present invention;

Fig. 5 is the schematic cross-sectional view of trunk and branch of the second embodiment of the present invention;

Fig. 6 is a schematic structural diagram of the first module of the third embodiment of the present invention;

Fig. 7 is the structural schematic diagram of the second module of the third embodiment of the present invention;

Fig. 8 is a schematic diagram of the use state of the aortic arch stent-type blood vessel after the second branch and the third branch are socketed with the first module and the second module according to the embodiment of the present invention. the

The realization of the purpose of the present invention, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings. the

Detailed ways

In the present invention, three branches are arranged at one end of the trunk on the aortic arch stent type vessel. Since the three branches are arranged at the same end of the trunk, the branches are closer together without mutual influence, and can be adapted to different patients. the

As shown in FIG. 3 , it is a schematic diagram of the aortic arch stent-type blood vessel according to the first embodiment of the present invention. The aortic arch stent-type blood vessel includes a trunk 10, a first branch 11, a second branch 12 and a third branch 13, wherein the first branch 11. The second branch 12 and the third branch 13 are respectively arranged at the same end of the trunk 10 , and the branches communicate with the trunk 10 respectively. the

In order to further illustrate the working principles of the above-mentioned embodiments of the present invention, the usage of the aortic arch stent-type blood vessel will be described in detail. Compress the aortic arch stent-type blood vessel into a suitable delivery system, and extend the aortic arch stent-type blood vessel from the right subclavian artery or right common carotid artery to the ascending aorta through the delivery system, withdraw the delivery system, expand the stent-type blood vessel, and place the trunk 10 At the ascending aorta, the first branch 11 is deployed in the right common carotid artery, and the second branch 12 and the third branch 13 are respectively deployed in the ascending aorta. the

The embodiment of the present invention also proposes a second embodiment on the basis of the first embodiment. As shown in Figure 4 and Figure 5, the diameter of the first branch 11 is greater than the diameter of the second branch 12, smaller than the diameter of the third branch 13, the sum of the diameters of the first branch 11 and the third branch 13 is equal to the trunk 10 The diameters are equivalent, and one end of the first branch 11, the second branch 12, the third branch 13 and the trunk 10, and the joints between the first branch 11, the second branch 12 and the third branch 13 and the trunk 10 are respectively provided with impervious An X-ray marker 14, the X-ray-opaque marker 14 is used to determine the position of the aortic arch stent-type vessel in the patient's body. A protruding structure, such as a barb structure, is provided at the other end of the aortic arch stent-type blood vessel trunk 10 for fixing the aortic arch stent-type blood vessel to the ascending aorta. the

The embodiment of the present invention also proposes a third embodiment on the basis of the above embodiments, and the aortic arch stent-type blood vessel further includes a first module 1 . As shown in FIG. 6 , it is a schematic structural diagram of the first module 1 according to the third embodiment of the present invention. The first module 1 is tubular, the diameter of one end of the first module 1 is smaller than the diameter of the other end, and the first module 1 is socketed with the second branch 12, wherein the smaller diameter end of the first module 1 is connected to the second branch 12 diameter to match. Two ends of the first module 1 are provided with X-ray-opaque markers 14 for determining the position between the first module 1 and the second branch 12 when the first module 1 and the second branch 12 are socketed. the

The third embodiment of the present invention also includes a second module 2 . As shown in FIG. 7 , it is a schematic structural diagram of the second module 2 according to the third embodiment of the present invention. The second module 2 is tubular and arcuate, wherein the diameter of one end of the second module 2 is smaller than that of the other end, and the second module 2 is socketed with the third branch 13 . The smaller diameter end of the second module 2 matches the diameter of the third branch 13 . Two ends of the second module 2 are provided with X-ray-opaque markers 14 for determining the position between the second module 2 and the third branch 13 socketed therein. The other structures and connections of the aortic arch stent-type vessels remained unchanged. the

In order to further illustrate the working principles of the above-mentioned embodiments of the present invention, the usage of the aortic arch stent-type blood vessel will be described in detail. The aortic arch stent-type blood vessel, the first module and the second module are respectively compressed in a suitable delivery system, and the aortic arch is determined by observing the X-ray-opaque marker 14 and determining the position of the marker 14 under the monitoring of special equipment Stent-type vessel location. Compress the aortic arch stent-type blood vessel into a suitable delivery system, and extend the aortic arch stent-type blood vessel from the right subclavian artery or right common carotid artery to the ascending aorta through the delivery system, withdraw the delivery system, expand the stent-type blood vessel, and place the trunk 10 At the ascending aorta, the first branch 11 is deployed in the right common carotid artery, and the second branch 12 and the third branch 13 are respectively deployed in the ascending aorta; at the same time, the barb set at one end of the main trunk 10 on the aortic arch stent-type vessel structure, so that the aortic arch stent-type blood vessel is fixed at the ascending aorta; then the first module 1 is placed in the innominate artery, so that the smaller diameter end of the first module 1 is socketed with the second branch 12 on the aortic arch stent-type blood vessel; Finally, the second module 2 is inserted through the femoral artery, and the smaller-diameter end of the second module 2 is socketed with the third branch 13 of the aortic arch stent-type vessel. Determine the position of the X-ray-opaque marker 14 by special equipment, so that the socket position between the first module 1 and the second branch 12 and between the second module 2 and the third branch 13 does not exceed the second branch 12 and the second branch 13 and the X-ray-impermeable marker 14 provided at the junction of the trunk 10, thereby completing the repair of human ascending aorta, aortic arch, and descending aorta lesions. As shown in FIG. 8 , it is the use state of the aortic arch stent-type blood vessel after the second branch 12 and the third branch 13 are socketed with the first module 1 and the second module 2 . the

The above-mentioned aortic arch stent-type blood vessels in the above-mentioned embodiments of the present invention use memory alloy wires or cut metal tubes to make Z-shaped wave stents, and form Z-shaped wave stent rings with different diameters after shaping, and fix Z-shaped wave stent rings with the same diameter, and The film is laid to make the Z-shaped wave stent circle into the shape of the first branch, the second branch, the third branch and the main blood vessel. the

Since the first branch 11, the second branch 12 and the third branch 13 are respectively arranged at the same end of the trunk 10, the branches are closer together, and at the same time the first module 1 and the second module 2 are respectively connected to the third branch on the aortic arch stent-type blood vessel. The two branches 12 and the third branch 13 are socketed to reduce the mutual influence between the aortic arch stent-type vessels during serial connection, and adapt to different patients. the

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related All technical fields are equally included in the scope of patent protection of the present invention. the

Claims (8)

1. An aortic arch stent type blood vessel is characterized in that it comprises a first module and a second module, as well as a trunk and a branch part, wherein the branches include a first branch, a second branch and a third branch, which are respectively arranged on the At one end of the trunk, the first branch is longer than the second branch and the third branch respectively; the first module and the second module are tubular structures, wherein the first module is socketed with the second branch, and the second module is connected with the second branch. Three branch socket. 2 . The aortic arch stent-type blood vessel according to claim 1 , wherein markers are respectively provided at both ends of the first module for determining the socket position of the first module and the second branch. 3 . 3 . The aortic arch stent-type blood vessel according to claim 1 , wherein markers are respectively provided at both ends of the second module for determining the socket position of the second module and the third branch. 4 . 4. The aortic arch stent-type blood vessel according to claim 3, wherein the second module is arc-shaped. 5. The aortic arch stent-type vessel according to any one of claims 1 to 4, wherein the diameter of the first branch is larger than that of the second branch and smaller than that of the third branch. 6. The aortic arch stent-type blood vessel according to claim 5, characterized in that, one end of the first branch, the second branch and the third branch, and the main body fixed with the first branch, the second branch and the third branch There is a marker at one end. 7. The aortic arch stent-type blood vessel according to claim 6, wherein the marker is opaque to X-rays. 8. The aortic arch stent-type blood vessel according to any one of claims 1 to 4, wherein the trunk is provided with a barbed structure for fixing the aortic arch stent-type blood vessel.

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