Simulation blood vessel model suite for interventional operation

Abstract

The utility model discloses a simulation blood vessel model suite for interventional operation, which comprises a channel blood vessel model and a test blood vessel model, the test blood vessel model comprises a main tube and a plurality of branch tubes, each branch tube is respectively communicated with the main tube in a converging manner, the channel blood vessel model is provided with at least one or one channel outlet, and the channel outlet is communicated with the channel blood vessel model. A first quick-release structure convenient to assemble and disassemble is arranged between the channel outlet and the main pipe of the test blood vessel model, the first quick-release structure is one or combination of a sleeving structure, a clamping structure, a lock catch structure or a thread structure, and after the channel blood vessel model and the test blood vessel model are connected, pipe cavities of the channel blood vessel model and the test blood vessel model are communicated with each other. Wherein the channel blood vessel model and the test blood vessel model are detachable, different types of test blood vessel models can be replaced to be connected with the channel blood vessel model, and branch shapes and bending degrees of branch tubes and main tubes of different test blood vessel models are different, so that different test blood vessel models are tested, and the cost-effectiveness ratio of products is improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a simulated blood vessel model kit 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 consist of a pathway vessel (simulating the entry path of interventional consumables, such as the femoral or radial artery pathway) and a test vessel (simulating the lesion area, such as coronary artery or cerebrovascular lesions). Existing simulated vascular models have both parts molded as a single unit, and the test vessel has a limited form. Operators cannot test or train on test vessels with different morphologies and lesion conditions (such as intravascular embolism, stenosis, and intravascular hemorrhage). Furthermore, it is difficult to retrieve the vascular stent after deployment, and it is also difficult to add simulated thrombi or other blockages into the lumen of the test vessel to simulate various surgical scenarios. Utility Model Content

[0004] The purpose of this invention is to provide a simulated vascular model kit 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 kit for interventional surgery includes a channel vascular model and a test vascular model. The test vascular model includes a main tube and several branch tubes, each of which is connected to the main tube. The channel vascular model has at least one channel outlet. A first quick-release structure for easy assembly and disassembly is provided between the channel outlet and the main tube of the test vascular model. The first 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 vascular model and the test vascular model are connected, their lumens are connected to each other.

[0007] Preferably, when the first 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.

[0008] Preferably, at least one of the branches is connected to a functional segment at its end, and a second quick-release structure is provided between the functional segment and the end of the branch 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. The functional segment is one or a combination of a stent testing functional segment, a simulated thrombosis functional segment, and a vascular stenosis functional segment.

[0009] Preferably, the support testing section adopts a flexible tube structure or an openable rigid tube structure. When the support testing section adopts a flexible tube structure and the second quick-release structure is a sleeve structure, the end of the branch tube is provided with an anti-slip protrusion, and one end of the flexible tube structure is sleeved on the anti-slip protrusion of the branch tube by its own elasticity.

[0010] Preferably, the channel blood vessel model and the test blood vessel model are provided with simulated blood, and the end of the functional segment or branch is provided with a blocking part to prevent the simulated blood in the lumen from overflowing. Under the blocking effect of the blocking part and the effect of atmospheric pressure, the simulated blood in the functional segment is sealed and will not flow out.

[0011] Alternatively, the end of the functional segment or branch is connected to a circulation pump via a pipeline, through which simulated blood is drawn out and then pumped back into the lumen of the channel vascular model and / or test vascular model.

[0012] Preferably, the simulated thrombus functional segment is filled with a first filler for simulating thrombus, the first filler being jelly-like or gel-like.

[0013] Preferably, the vascular stenosis functional segment has a stenosis portion, which is a stenosis tube structure, and the cross-sectional area of ​​the inner lumen of the stenosis tube structure is smaller than the cross-sectional area of ​​the inner lumen of the branch tube connected to the vascular stenosis functional segment.

[0014] Preferably, the vascular stenosis functional segment is provided with a stenosis section, which is a second filler disposed in the lumen. The vascular stenosis functional segment is also provided with an expansion section. The cross-sectional area of ​​the inner lumen of the expansion section is larger than the cross-sectional area of ​​the inner lumen of the branch tube connected to the vascular stenosis functional segment. The second filler is filled in the expansion section. The second filler is in the form of soft gel, sponge, or paste.

[0015] The end of the expansion segment is provided with at least two sub-functional segments, and the lumen of the expansion segment is connected to the lumen of the two sub-functional segments. Each sub-functional segment is used to simulate the true lumen or false lumen of a blood vessel.

[0016] Preferably, the end of the functional section or branch pipe is provided with a tapering section, and the maximum inscribed circle diameter of the inner cavity cross-section of at least one location of the tapering section is less than 1 mm.

[0017] Preferably, the branch pipes are arranged in a tree-like, interlaced manner on the main pipe, and at least one branch pipe is further branched and connected to a sub-branch pipe.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. 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. Different test blood vessel models have different branch shapes and degrees of curvature of each branch and main tube, so different test blood vessel models can be tested to improve the cost-effectiveness of the product.

[0020] 2. The functional segments and branches are detachably connected, making it easy to replace different functional segments to simulate lesions such as intravascular thrombosis and stenosis;

[0021] 3. 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 functional sections use different outer diameters, inner diameters or hardnesses of the flexible tubes to achieve testing of different blood vessel walls. After the stent is released, the flexible tube structure can be cut open to recycle the stent.

[0022] 4. The simulated thrombus functional segment is equipped with a first filling material that simulates a thrombus. Different functional segments use different hardness or filling length of the first filling material. By connecting different functional segments to the end of the branch tube, the test of thrombi of different hardness can be achieved.

[0023] 5. The stenotic segment is equipped with a stenotic section to simulate vascular stenosis. The combination of the dilation segment and the second filler simulates CTO complete occlusion lesions, so that the guidewire lacks the guidance of the vessel wall when passing through the dilation segment, simulating the blind puncture of the guidewire in real situations. The sub-functional segment can be used to simulate the true lumen and false lumen of the vessel, thereby simulating the blind puncture of the guidewire into the false lumen. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of Example 1;

[0025] Figure 2 This is a schematic diagram of the structure of Example 2;

[0026] Figure 3 This is a side cross-sectional view of the hose in Example 2;

[0027] Figure 4 This is a schematic diagram of the overall structure of Example 3;

[0028] Figure 5 This is a schematic diagram of the expansion section structure in Example 3;

[0029] Figure 6This is a schematic diagram of the first embodiment of the narrow tube structure in Example 4;

[0030] Figure 7 This is a schematic diagram of the second embodiment of the narrow tube structure in Example 4;

[0031] Figure 8 This is a schematic diagram of the structure of Example 5;

[0032] Figure 9 This is a schematic diagram of the structure of Example 6. Detailed Implementation

[0033] 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.

[0034] Example 1

[0035] like Figure 1 A simulated vascular model kit 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.

[0036] The vascular model is made of transparent plastic, which facilitates observation of the inside of the vascular model when simulating various surgical scenarios.

[0037] 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 first quick-release structure for easy assembly and disassembly between the main tube 201 of the test vessel model 200. The first 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, their lumens are connected to each other.

[0038] 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.

[0039] When the first 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, which facilitates the passage of interventional consumables through the connection between the two and facilitates 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 of different test vessel models 200 are different, but the connecting sleeve 204 structure of different test vessel models is the same. 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.

[0040] Example 2

[0041] This embodiment refers to the working principle of embodiment 1, but differs from embodiment 1 in that:

[0042] like Figure 2 and Figure 3 At least one of the branch tubes 202 or sub-branch tubes is connected to a functional section at its end. A second quick-release structure is provided between the functional section and the end of the branch tube 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. The functional section is one or a combination of a stent testing functional section, a simulated thrombosis functional section, and a vascular stenosis functional section.

[0043] The stent testing functional segment is made of a flexible tube structure 205 or an openable rigid tube structure. In this embodiment, 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, different blood vessel walls can be tested.

[0044] The channel blood vessel model and the test blood vessel model contain simulated blood. The end of the functional segment or branch 202 is equipped with a plug. In this embodiment, the plug is a plug 206, which prevents the simulated blood in the lumen from overflowing. The plug 206 is made of a rigid or elastic material and can be connected to the end of the functional segment or branch 202 by interference fit. Alternatively, the plug 206 can be replaced by other sealing methods, such as a blind hole structure, a flattened structure, or adhesive sealing.

[0045] The simulated thrombus functional segment is filled with a first filler 207 for simulating thrombi. The first filler 207 is in the form of jelly or gel. There are multiple simulated thrombus functional segments, and the first filler 207 used in different simulated thrombus functional segments has different hardness or filling length. By connecting different simulated thrombus functional segments to the end of the branch tube 202, the testing of thrombi of different hardness can be achieved.

[0046] Example 3

[0047] This embodiment refers to the working principle of embodiment 2, but differs from embodiment 2 in that:

[0048] like Figures 4 to 5 At least one branch tube 202 or sub-branch tube is provided with a vascular stenosis functional segment. The vascular stenosis functional segment is provided with a stenosis portion. The stenosis portion is a second filler 210 disposed in the lumen. The vascular stenosis functional segment is also provided with an expansion segment 208. The cross-sectional area of ​​the inner lumen of the expansion segment 208 is larger than the cross-sectional area of ​​the inner lumen of the branch tube 202 connected to the vascular stenosis functional segment. The second filler 210 is filled in the expansion segment 208. The second filler is in the form of soft gel, sponge or paste. There are multiple vascular stenosis functional segments. Different vascular stenosis functional segments use expansion segments 208 with different inner lumen cross-sectional shapes or lengths, or use second fillers 210 with different hardness.

[0049] In this embodiment, the expansion section 208 and the branch tube 202 are fixed by a locking sleeve 209. The expansion section 208 is flat and filled with a second filler 210. The second filler 210 is used to simulate vascular stenosis. There are multiple vascular stenosis functional sections, and the cross-sectional shape or length of the expansion section 208 and the hardness of the second filler 210 used for different vascular stenosis functional sections are different. By connecting different vascular stenosis functional sections to the end of the branch tube 202, the testing of different vascular stenosis lesions can be achieved.

[0050] The expansion section 208 includes an expansion body 2081 and a tapering section. The maximum inscribed circle diameter of the inner cavity cross-section of at least one part of the tapering section is less than 1 mm. The tapering section is a funnel-shaped blocking sleeve 2082. The end of the expansion body 2081 is fixedly connected to the end of the branch pipe 202 through a locking sleeve 209. The large-diameter end of the blocking sleeve 2082 is sleeved on the outside of the end of the expansion body 2081 on the side away from the branch pipe 202. The blocking sleeve 2082 is used to block the second filler 210 inside the expansion body 2081 to prevent the second filler 210 from being displaced.

[0051] The small-diameter end of the blocking sleeve 2082 is equipped with a sealing sleeve 212. The sealing sleeve 212 is formed by heat shrink tubing. The sealing sleeve 212 shrinks rapidly when heated, and the end of the sealing sleeve 212 is sealed with glue to prevent the simulated blood in the expansion section from leaking out. During simulated vascular interventional surgery, the guidewire is first pushed into the sealing sleeve 212. Since the maximum inscribed circle diameter of the inner cross-section of the sealing sleeve 212 is less than 1mm, it can embed the end of the guidewire, effectively preventing the guidewire from retracting when pushing the Rx balloon catheter or OTW balloon catheter along the guidewire.

[0052] Example 4

[0053] This embodiment refers to the working principle of embodiment 3, but differs from embodiment 3 in that:

[0054] like Figure 6 and Figure 7 As shown, the vascular stenosis functional segment has a stenosis portion, which is a stenosis tube structure 216. The cross-sectional area of ​​the inner lumen of the stenosis tube structure 216 is smaller than the cross-sectional area of ​​the inner lumen of the branch tube 202 connected to the vascular stenosis functional segment, such as... Figure 6 The diameter of the lumen of the narrow tube structure 216 is set to decrease from both ends toward the middle, or as follows: Figure 7 The middle of the lumen of the narrow tube structure 216 is completely closed and blocked.

[0055] Example 5

[0056] This embodiment refers to the working principle of embodiment 3, but differs from embodiment 3 in that: the end of the expansion segment is provided with at least two sub-functional segments, each of which is used to simulate the true lumen 214 and the false lumen 213 of the blood vessel.

[0057] Specifically: such as Figure 8 As shown, the thinned segment fitted onto the expansion body 2081 has two branches, which respectively simulate the true lumen 214 and the false lumen 213 of the blood vessel.

[0058] Example 6

[0059] The end of the functional segment or branch is connected to a circulation pump via a pipeline. The circulation pump extracts the simulated blood and then pumps it back into the lumen of the channel vascular model and / or the test vascular model.

[0060] like Figure 9 As shown, the ends of one or more functional segments of the test vascular model 200 are connected to the circulation pump 215 via tubing, and the channel vascular model 100 is connected to the circulation pump 215 via tubing. The circulation pump 215 draws out the simulated blood from the test vascular model 200 and pumps it back into the channel vascular model 100 (the pumping position is the location of the aortic valve, simulating the heart pumping blood into the aorta), thus achieving circulation.

[0061] 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.

[0062] 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 interventional procedure simulation vascular phantom kit, characterized by, The channel blood vessel model comprises a main pipe and a plurality of branch pipes, each of which is in communication with the main pipe, and at least one channel outlet is arranged on the channel blood vessel model, and a first quick release structure is arranged between the channel outlet and the main pipe of the test blood vessel model to facilitate disassembly.

2. The simulated vascular model kit for an interventional procedure according to claim 1, wherein, When the first 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 end of the channel outlet.

3. The simulated vascular model kit for an interventional procedure according to claim 1, wherein, The end of at least one of the branch pipes is connected with a functional section, and a second quick release structure is arranged between the end of the branch pipe and the functional section to facilitate disassembly, and the second quick release structure is one or a combination of a sleeve structure, a clamping structure, a lock structure or a threaded structure.

4. The simulated vascular model kit for an interventional procedure according to claim 3, wherein The functional section is one or a combination of a stent test functional section, a simulated thrombus functional section and a blood vessel stenosis functional section.

5. The simulated vascular model kit for an interventional procedure according to claim 3, wherein When the stent test functional section adopts a soft tube structure and 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 soft tube structure is sleeved on the anti-skid protrusion of the branch pipe by the elasticity of the soft tube structure. The channel blood vessel model and the test blood vessel model are provided with simulated blood, and the end of the functional section or the branch pipe is provided with a blocking part to prevent the simulated blood in the pipe cavity from overflowing.

6. The simulated vascular model kit for an interventional procedure according to claim 3, wherein Alternatively, the end of the functional section or the branch pipe is connected to a circulating pump through a pipeline, the simulated blood is pumped out by the circulating pump, and then re-pumped into the pipe cavity of the channel blood vessel model and / or the test blood vessel model.

7. The simulated vascular model kit for an interventional procedure according to claim 3, wherein The simulated thrombus functional section is filled with a first filler for simulating thrombus, and the first filler is in the form of jelly or gel.

8. The simulated vascular model kit for an interventional procedure according to claim 3, wherein, The blood vessel stenosis functional section is provided with a stenosis part, and the stenosis part is a stenosis pipe structure, and the inner cavity cross-sectional area of the stenosis pipe structure is smaller than the inner cavity cross-sectional area of the branch pipe connected with the blood vessel stenosis functional section. The blood vessel stenosis functional section is provided with a stenosis part, and the stenosis part is a second filler arranged in the pipe cavity, and the blood vessel stenosis functional section is further provided with an expansion section, and the inner cavity cross-sectional area of the expansion section is larger than the inner cavity cross-sectional area of the branch pipe connected with the blood vessel stenosis functional section, and the second filler is filled in the expansion section, and the second filler is in the form of soft glue, sponge or paste.

9. The simulated vascular model kit for an interventional procedure according to claim 3, wherein, The end of the expansion section is provided with at least two sub-functional sections, the inner cavity of the expansion section is in communication with the pipe cavities of the two sub-functional sections, and each of the sub-functional sections is used for simulating the true cavity or the false cavity of a blood vessel.

10. The simulated vascular model kit for an interventional procedure of claim 1, wherein, The end of the functional section or the branch pipe is provided with a tapered section, and the maximum inscribed circle diameter of the inner cavity cross-section of at least one place of the tapered section is less than 1 mm. The plurality of branch pipes are staggered on the main pipe in the form of tree branches, and at least one branch pipe is further bifurcated and connected with a sub-branch pipe.

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