Simulated blood vessel model for interventional operation

Abstract

The utility model discloses a simulation blood vessel model of interventional operation, including test blood vessel model and stent test function section, the test blood vessel model includes main tube and a plurality of branch tube, each branch tube converges and is communicated with the main tube respectively, the end of at least one branch tube is connected with one stent test function section through a second quick release structure, and the second quick release structure is connected with the stent test function section through a second quick release structure. The second quick release structure is one or combination of a sleeving structure, a clamping structure, a lock catch structure or a thread structure, and the support test function section adopts a hose structure. Wherein the stent test function section adopts a hose structure, a hose has elasticity, the simulation of a blood vessel wall through the hose is more real, the hose can be quickly mounted or dismounted, the hoses adopted by different stent test function sections are different in outer diameter or inner diameter or hardness, and the elastic force or clamping force of an elastic clamping piece or a plastic clamping piece is different. The test of different calcification degrees of different blood vessel walls can be realized, and after the stent is released, the hose structure can be cut open to recycle the stent.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a simulated blood vessel model for interventional surgery. Background Technology

[0002] Interventional vascular surgery is a minimally invasive procedure performed inside blood vessels using interventional medical consumables such as guidewires, catheters, and stents. It is used to treat cardiovascular diseases, neurovascular diseases, and other vascular-related conditions. Interventional vascular surgery is mainly categorized by treatment focus into surgical treatments for endovascular embolization, stenosis, and intravascular hemorrhage. Various interventional instruments and imaging equipment are required during the procedure.

[0003] Due to limitations in imaging equipment and experimental animals, operators typically need to use simulated vascular models for testing or training before performing vascular interventional procedures. Therefore, the design of simulated vascular models is essential. These models usually include a test vessel section (used to simulate the lesion area, such as coronary artery disease or cerebrovascular disease). Existing test vessel sections are all one-piece molded, resulting in a uniform shape. Operators cannot test or train on test vessels with different shapes and lesion conditions (such as intravascular embolism, stenosis, and intravascular hemorrhage). Furthermore, once the vascular stent is deployed, it is difficult to retrieve it. Utility Model Content

[0004] The purpose of this invention is to provide a simulated vascular model for interventional surgery to address the shortcomings and unmet technical requirements of existing technologies.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A simulated vascular model for interventional surgery includes a test vascular model and a stent test functional segment. The test vascular model includes a main tube and several branch tubes, each branch tube being connected to the main tube. The end of at least one branch tube is connected to a stent test functional segment via a second quick-release structure. The second quick-release structure is one or a combination of a sleeve structure, a snap-fit ​​structure, a locking structure, or a threaded structure. The stent test functional segment adopts a flexible tube structure.

[0007] Preferably, the end of the test section of the bracket is further provided with a variable diameter section, and the maximum inscribed circle diameter of the inner cavity cross section of at least one part of the variable diameter section is less than 1 mm.

[0008] Preferably, the stent testing function section further includes an external component, which is an elastic clamp or a shaping clamp. The elastic clamp or the shaping clamp is clamped outside the hose structure. The shaping clamp is made of plastic metal. When the stenosis is expanded by the external balloon or stent, the shaping clamp will be expanded and deformed, and the shaping clamp will undergo plastic deformation and maintain its shape change.

[0009] Preferably, the elastic clamping member or the shaping clamping member is a U-shaped clamp or an O-shaped clamp, and the hose structure is clamped by the two arms of the U-shaped clamp or the O-shaped clamp. The elastic force or clamping force of the elastic clamping member or the shaping clamping member of different bracket test functional sections are different.

[0010] Preferably, the end of the variable diameter section is provided with a blocking part or a return pipe, and the return pipe is connected to a circulation pump for blood circulation.

[0011] Preferably, when the second quick-release structure is a sleeve structure, the end of the branch pipe is provided with an anti-slip protrusion, and one end of the hose structure is sleeved on the anti-slip protrusion of the branch pipe by its own elasticity.

[0012] Preferably, the system also includes a channel blood vessel model, which has at least one channel outlet. A third quick-release structure for easy assembly and disassembly is provided between the channel outlet and the main tube of the test blood vessel model. The third quick-release structure is one or a combination of a sleeve structure, a snap-fit ​​structure, a locking structure, or a threaded structure. When the channel blood vessel model and the test blood vessel model are connected, their lumens are in communication with each other.

[0013] Preferably, when the third quick-release structure is a sleeve structure, the end of the main pipe is provided with a flared connecting sleeve, which is sleeved on the outside of the channel outlet end.

[0014] Preferably, the test vascular model adopts a transparent plastic tubular structure, and the stent test functional segment adopts a transparent flexible tube structure, which is a transparent silicone tube or a transparent TPU tube.

[0015] Preferably, the outer diameter, inner diameter, or hardness of the transparent flexible tube structure for different support test functional sections are different.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. The stent testing section adopts a flexible tube structure. The flexible tube is elastic and simulates the blood vessel wall more realistically. The flexible tube can be quickly installed or removed. Different stent testing sections use different outer or inner diameters or hardness of the flexible tube, and the elasticity or clamping force of the elastic or plastic clamping parts are different. This can realize the testing of different degrees of calcification of different blood vessel walls. After the stent is released, the flexible tube structure can be cut open to recycle the stent.

[0018] 2. The test vascular model is made of transparent plastic material, and the stent test functional section adopts a transparent flexible tube structure, which facilitates observation of the inside of the vascular model when simulating various surgical scenarios.

[0019] 3. Due to the small diameter of the reducing section, the end of the guidewire can be embedded, effectively preventing guidewire retraction when pushing the Rx balloon catheter or OTW balloon catheter along the guidewire.

[0020] 4. The channel blood vessel model and the test blood vessel model are detachable and can be replaced with different models of test blood vessel models to connect with the channel blood vessel model. The branch shape and curvature of each branch and main tube of different test blood vessel models are different, so different test blood vessel models can be tested to improve the cost-effectiveness of the product. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of Example 1;

[0022] Figure 2 This is a schematic diagram of the structure of Example 2;

[0023] Figure 3 This is a side cross-sectional view of the hose in Example 2;

[0024] Figure 4 This is a schematic diagram of the external component structure of Example 2;

[0025] Figure 5 This is a schematic diagram of the structure of the external component clamped outside the flexible tube structure in Example 2;

[0026] Figure 6 This is a schematic diagram of the structure of Example 3. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1

[0029] like Figure 1A simulated vascular model for interventional surgery includes a channel vascular model 100 and a test vascular model 200. The test vascular model 200 is an alternative module and can be a coronary artery model, a cerebral vascular model, or a peripheral vascular model. When the test vascular model 200 is a coronary artery model, the channel vascular model 100 can simulate the vascular intervention path of interventional consumables from the femoral artery, iliac artery, abdominal aorta, thoracic aorta, and aorta, or the channel vascular model 100 can simulate the vascular intervention path of interventional consumables from the radial artery, brachial artery, axillary artery, subclavian artery, and aorta. When the test vascular model 200 is a cerebral vascular model, the channel vascular model 100 can simulate the vascular intervention path of interventional consumables from the femoral artery, iliac artery, abdominal aorta, thoracic aorta, aortic arch, and carotid artery, or the channel vascular model 100 can simulate the vascular intervention path of interventional consumables from the radial artery, brachial artery, axillary artery, subclavian artery, aortic arch, and carotid artery. The test vessel model 200 in this embodiment uses a coronary artery model. The test vessel model 200 includes a main tube 201 and several branch tubes 202. Each branch tube 202 is connected to the main tube 201. The branch tubes 202 are arranged in a tree-like staggered manner on the main tube 201, and at least one branch tube 202 is also branched and connected to a sub-branch tube 203. The channel vessel model is provided with a left coronary artery orifice 101 and a right coronary artery orifice 102 (the left coronary artery orifice 101 and the right coronary artery orifice 102 are equivalent to the channel outlet). The left coronary artery orifice 101 and / or the right coronary artery orifice 102 are provided with a third quick-release structure between the main tube 201 of the test vessel model 200 for easy installation and removal. The third quick-release structure is one or a combination of a sleeve structure, a snap-fit ​​structure, a locking structure, or a threaded structure. When the channel vessel model and the test vessel model are connected, the lumens of the two are connected to each other.

[0030] The test vascular model 200 is made of transparent plastic.

[0031] The branch pipe 202 or sub-branch pipe 203 is equipped with a stent testing section. After the stent is tested, the stent testing section can be cut open to quickly remove the stent and recycle it.

[0032] The tail end of the branch tube 202 or sub-branch tube 203 is provided with a first tapered section 2031 with a reduced diameter. During simulated vascular interventional surgery, the guidewire is first pushed to the first tapered section 2031. Because the diameter of the first tapered section 2031 is small, it can embed the end of the guidewire. When pushing the Rx balloon catheter or OTW balloon catheter along the guidewire, it can effectively prevent the guidewire from retracting.

[0033] When the third quick-release structure is a sleeve structure, the end of the main tube is provided with a flared connecting sleeve 204. The connecting sleeve 204 is sleeved on the outside of the ends of the left coronary artery ostium 101 and / or the right coronary artery ostium 102, facilitating the passage of interventional consumables through the connection between the two and enabling quick assembly and disassembly by the operator. Multiple test vessel models 200 are provided, and the branching morphology and curvature of each branch tube 202 and the main tube 201 differ among different test vessel models 200, but the connecting sleeve 204 structure is identical across different test vessel models. By connecting different test vessel models 200 to the left coronary artery ostium 101 and the right coronary artery ostium 102, testing of coronary arteries with different morphologies can be achieved.

[0034] Example 2

[0035] This embodiment refers to the working principle of embodiment 1, but differs from embodiment 1 in that:

[0036] like Figures 2 to 5 At least one of the branch pipes 202 or sub-branch pipes is connected to a support testing functional section at its end. A second quick-release structure is provided between the support testing functional section and the end of the branch pipe 202 for easy installation and removal. The second quick-release structure is one or a combination of a sleeve structure, a snap-fit ​​structure, a locking structure, or a threaded structure.

[0037] The stent testing functional segment uses a flexible tube structure 205 to simulate the blood vessel wall. When the second quick-release structure is a sleeve structure, the end of the branch tube 202 is provided with an anti-slip protrusion 2021. One end of the flexible tube structure 205 is elastically sleeved over the anti-slip protrusion 2021 of the branch tube 202. There are multiple stent testing functional segments, and the outer diameter, inner diameter, or hardness of the flexible tube structure 205 used in different stent testing functional segments are different. By connecting different stent testing functional segments to the end of the branch tube 202, tests on different degrees of calcification of blood vessel walls can be achieved.

[0038] The hose structure 205 adopts a transparent hose structure, which is a transparent silicone tube or a transparent TPU tube.

[0039] like Figure 4 and Figure 5 It also includes an external component 2051, which is an elastic clamping member or a shaping clamping member. The elastic clamping member or the shaping clamping member is clamped outside the hose structure 205. The shaping clamping member is made of plastic metal. When the narrow part is expanded by the external balloon or stent, the shaping clamping member will be expanded and deformed. The shaping clamping member will undergo plastic deformation and maintain its shape change.

[0040] The elastic or shaped clamping component is a U-shaped clamp or an O-shaped clamp. The hose structure 205 is clamped by the two arms of the U-shaped clamp or the O-shaped clamp. The elastic force or clamping force of the elastic or shaped clamping component of different bracket test functional sections is different.

[0041] The end of the stent test section is also provided with a diameter-changing part 206. The maximum inscribed circle diameter of the inner cross-section of at least one part of the diameter-changing part 206 is less than 1 mm. The channel blood vessel model and the test blood vessel model are provided with simulated blood. The end of the diameter-changing part 206 is plugged with glue (equivalent to a blockage part) to prevent the simulated blood in the lumen from overflowing.

[0042] Example 3

[0043] The end of the variable diameter section of the stent test functional segment is connected to a circulation pump via a return tube. The circulation pump extracts simulated blood and then pumps it back into the lumen of the channel vascular model and / or the test vascular model.

[0044] like Figure 6 As shown, the ends of the variable diameter sections of one or more stent test functional segments of the test vascular model 200 are connected to the circulation pump 215 via a return tube. The channel vascular model 100 is connected to the circulation pump 215 via a pipeline. The circulation pump 215 draws out the simulated blood in the test vascular model 200 and pumps it back into the channel vascular model 100 (the pumping position is the position of the aortic valve, simulating the heart pumping blood into the aorta), thus achieving circulation.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An intervention simulation blood vessel model, characterized by, The test blood vessel model comprises a main pipe and several branch pipes, each of which is in communication with the main pipe, and the end of at least one branch pipe is connected with a stent test functional section through a second quick release structure, which is one or a combination of a sleeve structure, a clamping structure, a lock structure or a threaded structure.

2. An intervention simulation vascular model according to claim 1, characterized in that, The end of the stent test functional section is also provided with a variable diameter part, and the maximum diameter of the inscribed circle of the cross section of the inner cavity of at least one part of the variable diameter part is less than 1mm.

3. The simulated vascular model for an interventional procedure of claim 1, wherein, The stent test functional section further comprises an external member, which is an elastic clamping member or a plastic clamping member, and the elastic clamping member or the plastic clamping member is clamped outside the hose structure. When the narrow part is expanded by an external balloon or a stent, the plastic clamping member will be deformed, and the plastic clamping member will be plastically deformed and keep the shape change.

4. An intervention simulation vascular model according to claim 3, characterized in that, The elastic clamping member or the plastic clamping member is a U-shaped clamp or an O-shaped clamp, and the hose structure is clamped by the two arms of the U-shaped clamp or the O-shaped clamp.

5. The simulated vascular model for an interventional procedure of claim 2, wherein, The end of the variable diameter part is provided with a plug part or a backflow pipe, and the backflow pipe is connected with a circulating pump for blood circulation.

6. The simulated vascular model for an interventional procedure of claim 1, wherein, When the second quick release structure is a sleeve structure, the end of the branch pipe is provided with an anti-skid protrusion, and one end of the hose structure is sleeved outside the anti-skid protrusion of the branch pipe through the elasticity of the hose structure.

7. An intervention simulation vascular model according to claim 6, characterized in that, The test blood vessel model also comprises a channel blood vessel model, which is provided with at least one channel outlet, and a third quick release structure is arranged between the channel outlet and the main pipe of the test blood vessel model to facilitate disassembly, and the third quick release structure is one or a combination of a sleeve structure, a clamping structure, a lock structure or a threaded structure. When the channel blood vessel model and the test blood vessel model are connected, the pipe cavities of the two are in communication with each other.

8. An intervention simulation vascular model according to claim 7, characterized in that, When the third quick release structure is a sleeve structure, the end of the main pipe is provided with a trumpet-shaped connecting sleeve which is sleeved outside the end of the channel outlet.

9. The simulated vascular model for use in an interventional procedure according to claim 1, characterized in that, The test blood vessel model adopts a transparent plastic tubular structure, and the stent test functional section adopts a transparent hose structure, which is a transparent silica gel tube or a transparent TPU tube.

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