Arterial peripheral suction cup stent and installation method thereof

Abstract

The present invention belongs to the technical field of arterial interventional medical devices, and discloses an arterial peripheral suction cup stent and its installation method. The net tube stent is provided with a support rod, and the support rod is composed of a plurality of V-shaped rods connected in the first position, and two opposite V-shaped rods form a diamond mesh; an opening is provided on one side of the net tube stent; a suction cup stent is provided in the middle of the net tube stent; and a plurality of micro suction cups are provided on the inner side of the suction cup stent. The present invention changes the intravascular operation mode to start from the outer mold of the blood vessel, and adopts a suction cup type stent auxiliary device to uniformly adsorb the outer membrane of the blood vessel at the narrow part along the surrounding of the tube wall in a radial shape, so that the organ cavity is uniformly enlarged, and the cerebral blood flow is increased, thereby improving the ischemic and hypoxic symptoms of the brain, avoiding the need for long-term oral anticoagulant drugs for the internal carotid artery stent and causing more serious complications, alleviating the pain of the patient, and does not require blocking of the blood vessel, with a high safety factor.

Description

Technical Field

[0001] The present invention belongs to the technical field of arterial interventional medical devices, and in particular relates to an arterial peripheral suction cup bracket and a mounting method thereof. Background Art

[0002] At present, hypoxic-ischemic encephalopathy has become a major risk factor threatening human health. One factor leading to the high incidence of this disease is directly related to the gradually worsening atherosclerosis. With age, the compliance of the blood vessel wall decreases, and the two main blood supply devices to the brain, the internal carotid artery and the vertebral basilar artery, may experience arterial lumen stenosis caused by atherosclerosis, thereby causing insufficient blood supply to the brain and leading to the occurrence of hypoxic-ischemic encephalopathy.

[0003] The main clinical treatments for hypoxic-ischemic encephalopathy are: for patients with stenosis of the internal carotid artery lumen, internal carotid artery stent implantation is used to fully expand the stenotic lumen, increase blood supply to the brain, and thus alleviate the patient's abnormal brain dysfunction. However, patients treated with this method need long-term oral anticoagulant therapy due to the implantation of stent foreign bodies in their bodies to prevent recurrence of thrombosis and blockage of blood vessels. Long-term oral anticoagulants may cause coagulation disorders in patients, and the possibility of bleeding is significantly increased, resulting in more serious complications; the second method is surgical treatment, in which internal carotid endarterectomy is used to surgically remove the abnormally thickened arterial intima, but the operation is risky, the internal carotid artery is temporarily blocked and then an intravascular operation is performed, the possibility of cerebral ischemia and bleeding at the surgical site are both high, resulting in serious complications. Therefore, there is an urgent need for a safe and effective method for the treatment of hypoxic-ischemic encephalopathy in clinical practice.

[0004] Through the above analysis, the problems and defects of the prior art are as follows:

[0005] (1) The use of internal carotid artery stents requires long-term oral anticoagulant therapy to prevent recurrence of thrombosis and blockage of blood vessels. Long-term oral anticoagulant therapy may cause coagulation disorders in patients, significantly increasing the possibility of bleeding and causing more serious complications.

[0006] (2) Surgical procedures are risky. Temporary occlusion of the internal carotid artery followed by intravascular procedures may increase the likelihood of cerebral ischemia and bleeding at the surgical site, resulting in serious complications.

[0007] The difficulty in solving the above problems and defects is: because the internal carotid artery stent system is commonly used with alloy materials, its mesh structure itself is easy to affect blood components such as red blood cells and platelets. At present, the effective method to prevent this complication is to take anticoagulants for a long time after the stent system is placed. However, the problem with long-term use of anticoagulants is that the patient's own coagulation mechanism is destroyed, which often causes a significant increase in the risk of bleeding. In order to prevent the occurrence of bleeding, patients need to go to the hospital regularly to draw blood for tests on four coagulation indicators, and often need to adjust the dosage of drugs, which has a great impact on the patient's body and mind. At the same time, patients often cannot take the drugs on time and in the right amount, which greatly increases the risk after stent implantation. The peripheral vascular suction cup system can well avoid long-term drug treatment, so it will not cause serious complications such as ischemia or bleeding caused by insufficient or excessive drugs.

[0008] The significance of solving the above problems and defects is: when performing internal carotid artery stripping, it is often necessary to temporarily block the blood vessel in order to perform endothelial resection surgery. In order to avoid the occurrence of ischemic symptoms, it is often necessary to strictly control the time of temporary blockage during the operation, which requires high operating skills of the operator. At the same time, because it involves intravascular operations, the slightest carelessness may cause complications such as heavy bleeding. However, operations performed through the periphery of the blood vessels will not cause damage to the endothelium. At the same time, the lack of temporary blockage ensures that blood circulation is not restricted, thereby avoiding complications such as ischemia caused by temporary blockage, which has good clinical significance. Summary of the invention

[0009] In order to solve the problems existing in the prior art, the present invention provides an arterial peripheral suction cup stent and an installation method thereof.

[0010] The present invention is achieved in that an arterial peripheral suction cup stent is provided with:

[0011] Network management bracket;

[0012] The network management bracket is provided with a support rod, and the support rod is composed of a plurality of V-shaped rods connected in the first position, two opposite V-shaped rods form a diamond mesh, and the opposite V-shaped rods are arranged in a peak-to-valley staggered manner; a connecting bridge is provided between adjacent support rods at intervals; an opening is provided on one side of the network management bracket; a suction cup bracket is provided in the middle of the network management bracket; and a plurality of micro suction cups are integrated on the outer side of the suction cup bracket;

[0013] The suction cup bracket is provided with a connecting plate, the connecting plate is arranged on both sides of the network management bracket, the connecting plate and the network management bracket are integrally formed, and the micro suction cup is clamped on the outer side of the connecting plate;

[0014] Furthermore, a plurality of support rings are integrated in the network management bracket, and the support rings are linearly and evenly arranged.

[0015] Furthermore, a plurality of operating holes are arranged on the outer side of the connecting plate, and the operating holes are evenly arranged in a matrix.

[0016] Furthermore, the network management bracket is made of nickel-titanium superelastic alloy.

[0017] Another object of the present invention is to provide a method for installing an arterial peripheral suction cup stent, which specifically includes:

[0018] Step 1: Detect the stenosis position of the internal carotid artery by using a vascular stenosis detection system, and evaluate the stenosis degree of the internal carotid artery;

[0019] Step 2, detecting the diameter of the normal internal carotid artery near the stenosis position by a blood vessel diameter detection method;

[0020] Step 3, determining the diameter specification of the network management stent according to the detected diameter data of the internal carotid artery;

[0021] Step 4: Align the suction cup bracket to the narrowed part of the blood vessel and put it on the internal carotid artery, and attach the micro suction cup to the internal carotid artery through forceps and the operation hole.

[0022] Furthermore, the vascular stenosis detection system comprises:

[0023] A graphics acquisition module, connected to the central processing and control module, is used for the CT device to obtain angiographic CTA images of the internal carotid vessels to be tested;

[0024] The image processing module is connected to the central processing and control module, tracks the centerline of the blood vessel based on the deep feature regression technology, determines the location of the blood vessel bifurcation structure using the prediction point clustering method, and completes the structure extraction of the blood vessel;

[0025] An image segmentation module, connected to the central processing and control module, performs straightening imaging at multiple set angles on the CTA image, and segments the straightened images at the multiple set angles respectively to obtain segmented images corresponding to each straightened image;

[0026] The width measurement module is connected to the central processing and control module, and measures the width of each segmented image of the straightened image one by one, and outputs a width curve corresponding to the straightened image;

[0027] The positioning module performs plaque positioning screening on the width curves one by one, and determines the stenosis area of ​​the internal jugular blood vessel to be tested according to the result of the plaque positioning screening.

[0028] Furthermore, in the positioning module, performing plaque positioning screening on the width curves one by one specifically includes:

[0029] Using a reference curve of an ideal width corresponding to the segmented image to compare the width curve corresponding to the segmented image for similarity, so as to perform plaque location screening on the width curves one by one;

[0030] Furthermore, in the positioning module, determining the stenosis area of ​​the blood vessel to be tested according to the result of the plaque positioning screening specifically includes:

[0031] The plaque localization screening results of the straightened images at multiple set angles are merged to determine whether the number of stenosis identifications at the same position is greater than a set threshold, and the corresponding position where the number of stenosis identifications is greater than the set threshold is identified as the stenosis point of the internal jugular blood vessel to be tested. The collection of the stenosis points constitutes the stenosis area of ​​the blood vessel to be tested.

[0032] Furthermore, the evaluation of the degree of stenosis of the internal carotid artery specifically includes:

[0033] Receiving angiography CTA images of the internal carotid blood vessel to be measured at multiple angles, and obtaining multiple two-dimensional images of the internal carotid blood vessel segment to be measured through the CTA image data;

[0034] The plurality of two-dimensional images represent corresponding cross sections of the internal carotid blood vessel segment to be measured, and a lumen region is identified for each of the plurality of two-dimensional images, wherein the lumen region includes lumen pixels representing the lumen of the corresponding cross section;

[0035] Quantitative measurements are obtained using the luminal area of ​​serial cross-sections of the vessel segment, and the quantitative measurements are used to assess vessel stenosis.

[0036] Furthermore, the blood vessel diameter detection method includes:

[0037] Select three reference vectors with an angle of π / 3 on the vascular cross section of the acquired vascular CTA image: a0, b0 and c0;

[0038] Taking a0 as the reference, a strip-shaped reconstructed strip image Ia is extracted from the original image, wherein the center line of the strip image is the center line of the blood vessel p0-pn;

[0039] The longitudinal grayscale sequence of each center point in Ia is extracted, and the gradient of the sequence is calculated. The difference between the horizontal coordinates corresponding to the maximum and minimum values ​​of the gradient sequence is taken as the blood vessel diameter.

[0040] Combining all the above-mentioned technical solutions, the advantages and positive effects of the present invention are as follows: the present invention changes the intravascular operation mode to start from the outer model of the blood vessel, and adopts a suction cup-type stent auxiliary device to uniformly adsorb the outer membrane of the blood vessel at the narrow part along the four sides of the tube wall in a radial manner, so that the lumen is uniformly enlarged, the cerebral blood flow is increased, and the symptoms of ischemia and hypoxia in the brain are improved, and the need for long-term oral anticoagulant drugs for internal carotid artery stents to produce more serious complications is avoided, the patient's pain is alleviated, and there is no need to block the blood vessels, so the safety factor is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0042] Figure 1 It is a schematic diagram of the structure of the arterial peripheral suction cup stent provided in an embodiment of the present invention.

[0043] Figure 2 It is a schematic diagram of the structure of the other side of the arterial peripheral suction cup stent provided in an embodiment of the present invention.

[0044] Figure 3 It is a schematic diagram of the structure of a suction cup provided in an embodiment of the present invention.

[0045] Figure 4 It is a schematic diagram of the use status of the arterial peripheral suction cup stent provided by an embodiment of the present invention.

[0046] In the figure: 1. network management bracket; 2. support rod; 3. connecting bridge; 4. connecting plate; 5. operation hole; 6. support ring; 7. opening; 8. micro suction cup; 9. internal carotid artery.

[0047] Figure 5 It is a flow chart of the installation method of the arterial peripheral suction cup stent provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0049] In view of the problems existing in the prior art, the present invention provides an arterial peripheral suction cup stent and an installation method thereof. The present invention is described in detail below in conjunction with the accompanying drawings.

[0050] like Figures 1 to 4As shown, the arterial peripheral suction cup stent provided by the present invention includes: a mesh tube stent 1, a support rod 2, a connecting bridge 3, a connecting plate 4, an operation hole 5, a supporting ring 6, an opening 7, and a micro suction cup 8.

[0051] Example 1

[0052] The network management support 1 of this embodiment is made of nickel-titanium superelastic alloy, and is provided with a support rod 2, which is composed of a plurality of V-shaped rods connected in the first position, and two opposite V-shaped rods form a diamond mesh, and the opposite V-shaped rods are arranged in a peak-to-valley staggered manner; a connecting bridge 3 is provided between adjacent support rods 2 at intervals; an opening 7 is provided on one side of the network management support 1; a suction cup support is provided in the middle of the network management support 1; and a plurality of micro suction cups 8 are integrated on the outer side of the suction cup support;

[0053] Example 2

[0054] On the basis of Example 1, the suction cup bracket of this embodiment is provided with a connecting plate 4, and a plurality of operation holes 5 are provided on the outer side of the connecting plate 4, and the operation holes 5 are evenly arranged in a matrix. The connecting plate 4 is provided on both sides of the network management bracket 1, and the connecting plate 4 and the network management bracket 1 are integrally formed, and the micro suction cup 8 is clamped on the outer side of the connecting plate 4;

[0055] Example 3

[0056] On the basis of Example 1, a plurality of support rings 6 are integrated in the network management support 1 of this embodiment, and the support rings 6 are linearly and evenly arranged.

[0057] The working principle of the present invention is as follows: according to the diameter of the patient's internal carotid artery 9, the diameter of the mesh tube support 1 is determined, the diameter of the mesh tube support 1 is slightly larger than the diameter of the internal carotid artery 9, the position of the stenosis of the blood vessel is determined, the opening 7 is opened by forceps and the operation hole 5, the suction cup support of the present invention is aligned with the stenosis of the blood vessel, and is put on the internal carotid artery 9, and the micro suction cup 8 is adsorbed on the internal carotid artery 9 through forceps and the operation hole 5, so that the organ cavity is uniformly enlarged, the cerebral blood flow is increased, and the ischemic and hypoxic symptoms of the brain are improved.

[0058] like Figure 5 As shown, the installation method of the arterial peripheral suction cup stent provided by the embodiment of the present invention specifically includes:

[0059] S101, detecting the stenosis position of the internal carotid artery by using a vascular stenosis detection system, and evaluating the stenosis degree of the internal carotid artery.

[0060] S102, detecting the diameter of a normal internal carotid artery near the stenosis position by a blood vessel diameter detection method.

[0061] S103, determining the diameter specification of the mesh tube stent according to the detected diameter data of the internal carotid artery.

[0062] S104, align the suction cup bracket with the narrowed part of the blood vessel and put it on the internal carotid artery, and adsorb the micro suction cup on the internal carotid artery through forceps and the operation hole.

[0063] The vascular stenosis detection system in the embodiment of the present invention comprises:

[0064] The image acquisition module is connected to the central processing and control module and is used by the CT device to obtain the angiography CTA image of the internal carotid blood vessels to be tested.

[0065] The image processing module is connected to the central processing and control module, tracks the centerline of the blood vessel based on the deep feature regression technology, uses the prediction point clustering method to determine the location of the blood vessel bifurcation structure, and completes the structure extraction of the blood vessel.

[0066] The image segmentation module is connected to the central processing and control module, and performs straightening imaging at multiple set angles on the CTA image, and segments the straightened images at the multiple set angles respectively to obtain segmented images corresponding to each straightened image.

[0067] The width measurement module is connected to the central processing and control module, and measures the width of each segmented image of the straightened image one by one, and outputs a width curve corresponding to the straightened image.

[0068] The positioning module performs plaque positioning screening on the width curves one by one, and determines the stenosis area of ​​the internal jugular blood vessel to be tested according to the result of the plaque positioning screening.

[0069] In the positioning module in the embodiment of the present invention, performing plaque positioning screening on the width curves one by one specifically includes:

[0070] A reference curve of an ideal width corresponding to the segmented image is used to compare the width curve corresponding to the segmented image for similarity, so as to perform plaque location screening on the width curves one by one.

[0071] In the positioning module in the embodiment of the present invention, determining the stenosis area of ​​the blood vessel to be tested according to the result of the plaque positioning screening specifically includes:

[0072] The plaque localization screening results of the straightened images at multiple set angles are merged to determine whether the number of stenosis identifications at the same position is greater than a set threshold, and the corresponding position where the number of stenosis identifications is greater than the set threshold is identified as the stenosis point of the internal jugular blood vessel to be tested. The collection of the stenosis points constitutes the stenosis area of ​​the blood vessel to be tested.

[0073] The evaluation of the degree of stenosis of the internal carotid artery in the embodiment of the present invention specifically includes:

[0074] The angiography CTA images of the internal carotid blood vessel to be measured at multiple angles are received, and multiple two-dimensional images of the internal carotid blood vessel segment to be measured are obtained through the CTA image data.

[0075] The plurality of two-dimensional images represent corresponding cross sections of the internal carotid blood vessel segment to be measured, and a lumen region is identified for each of the plurality of two-dimensional images, the lumen region including lumen pixels representing the lumen of the corresponding cross section.

[0076] Quantitative measurements are obtained using the luminal area of ​​serial cross-sections of the vessel segment, and the quantitative measurements are used to assess vessel stenosis.

[0077] The blood vessel diameter detection method in the embodiment of the present invention includes:

[0078] Three reference vectors with an angle of π / 3 are selected on the blood vessel cross section of the acquired blood vessel CTA image: a0, b0 and c0.

[0079] Taking a0 as a reference, a strip-shaped reconstructed strip image Ia is extracted from the original image, wherein the center line of the strip image is the blood vessel center lines p0-pn.

[0080] The longitudinal grayscale sequence of each center point in Ia is extracted, and the gradient of the sequence is calculated. The difference between the horizontal coordinates corresponding to the maximum and minimum values ​​of the gradient sequence is taken as the blood vessel diameter.

[0081] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0082] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any modifications, equivalent substitutions and improvements made by any technician familiar with the technical field within the technical scope disclosed by the present invention and within the spirit and principle of the present invention should be covered by the protection scope of the present invention.

Claims

1. An arterial peripheral suction cup stent, characterized in that: The arterial peripheral suction cup stent is provided with: Network management bracket; The network management bracket is provided with a support rod, and the support rod is composed of a plurality of V-shaped rods connected end to end, and two opposite V-shaped rods form a diamond mesh, and the opposite V-shaped rods are arranged in a peak-to-valley staggered manner; a connecting bridge is provided between adjacent support rods at intervals; an opening is provided on one side of the network management bracket; a suction cup bracket is provided in the middle of the network management bracket; and a plurality of micro suction cups are integrated on the outer side of the suction cup bracket; The suction cup bracket is provided with a connecting plate, the connecting plate is arranged on both sides of the network management bracket, the connecting plate and the network management bracket are formed in an integrated manner, and the micro suction cup is clamped on the outer side of the connecting plate; A plurality of support rings are integrated in the network management bracket, and the support rings are linearly and evenly arranged; A plurality of operating holes are arranged on the outer side of the connecting plate, and the operating holes are evenly arranged in a matrix.

2. The arterial peripheral suction cup stent according to claim 1, characterized in that: The material of the network management bracket is nickel-titanium superelastic alloy.

Images