Simulation blood vessel model suite for interventional operation
By designing a detachable simulated vascular model kit, including channel vascular model and test vascular model, the problems of insufficient flexibility in simulating different morphology and lesions in the prior art and difficulty in stent recovery are solved, and efficient and flexible vascular interventional surgery simulation is achieved.
Patent Information
- Application Number
- CN202510396815.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2025-05-13
AI Technical Summary
The existing simulated vascular models lack flexibility in simulating different morphology and lesions, and are difficult to recover stents and simulate thrombosis, making it impossible to fully simulate the complex scenarios of vascular interventional surgery.
A simulated vascular model kit including a channel vascular model and a test vascular model was designed. The test vascular model has a removable main and branch tube structure. The channel vascular model is connected through a quick-removal structure. The functional segments can be replaced at the end of the branch tube to simulate the lesions such as thrombosis and stenosis, and blood circulation is simulated through the circulatory pump system.
It realizes flexible simulation of different morphology and lesions, improves the cost-effectiveness ratio of the product, is recyclable, and the diversity of functional segments enhances the authenticity and diversity of surgical scenarios.
Smart Images
Figure CN119992946A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of medical instruments, in particular to a simulated blood vessel model kit for interventional surgery. Background Art
[0002] Vascular interventional surgery is a minimally invasive surgery performed in human blood vessels using medical consumables such as guidewires, catheters, and stents. It is used to treat cardiovascular diseases, neurovascular diseases, and other vascular-related diseases. Vascular interventional surgery is mainly divided into surgical treatments for intravascular embolism, stenosis, and intravascular hemorrhage. Various interventional instruments and imaging equipment are required during vascular interventional surgery.
[0003] Due to the limitations of imaging equipment and experimental animals, operators usually need to use simulated vascular models for testing or training before performing vascular interventional surgery, so it is necessary to design simulated vascular models. Simulated vascular models usually include a channel vascular part (used to simulate the entry path of interventional consumables, such as the femoral artery path or radial artery path, etc.) and a test vascular part (used to simulate the lesion area, such as coronary artery lesions or cerebrovascular lesions, etc.). The two parts of the existing simulated vascular models are all integrally formed, and the test vascular part has a single shape. Operators cannot test or train test vessels with different shapes and different lesions (such as intravascular embolism, stenosis, intravascular bleeding, etc.), and it is difficult to recover the vascular stent after it is released. It is also difficult to add simulated thrombi or other blockages into the lumen of the test vessel to simulate various surgical scenarios. Summary of the invention
[0004] The purpose of the present invention is to provide a simulated blood vessel model kit for interventional surgery to solve the existing technical defects and unattainable technical requirements.
[0005] To achieve the above object, the present invention provides the following technical solutions:
[0006] A simulated blood vessel model kit for interventional surgery includes a channel blood vessel model and a test blood vessel model. The test blood vessel model includes a main pipe and a plurality of branch pipes, each branch pipe is respectively connected to the main pipe. The channel blood vessel model is provided with at least one channel outlet. A first quick-release structure for easy loading and unloading is provided between the channel outlet and the main pipe of the test blood vessel model. The first quick-release structure is one or a combination of a sleeve structure, a clamping structure, a locking structure or a threaded structure. When the channel blood vessel model and the test blood vessel model are connected, the lumens of the two are connected to each other.
[0007] Preferably, when the first quick-release structure is a sleeve structure, a bell-shaped connecting sleeve is provided at the end of the main pipe, and the connecting sleeve is sleeved on the outside of the outlet end of the channel.
[0008] Preferably, at least one end of the branch tube is connected to a functional segment, and a second quick-release structure for easy loading and unloading is provided between the functional segment and the end of the branch tube, and the second quick-release structure is one or a combination of a sleeve structure, a snap-on structure, a locking structure or a threaded structure, and the functional segment is one or a combination of a stent test functional segment, a simulated thrombus functional segment, and a vascular stenosis functional segment.
[0009] Preferably, the bracket test function section adopts a hose structure or an openable and closable hard tube structure. When the bracket test function section adopts a hose structure and 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 elastically sleeved over the anti-slip protrusion of the branch pipe.
[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 the branch is provided with a blocking portion to prevent the simulated blood in the lumen from overflowing. Under the blocking effect of the blocking portion and the atmospheric pressure, the simulated blood is sealed in the functional segment and does not flow out.
[0011] Alternatively, the end of the functional segment or branch tube is connected to a circulation pump through a pipeline, and the simulated blood is drawn out by the circulation pump and then pumped back into the lumen of the channel vascular model and / or the test vascular model.
[0012] Preferably, the simulated thrombus functional segment is filled with a first filler for simulating thrombus, and the first filler is in a jelly or gel state.
[0013] Preferably, the vascular stenosis functional segment is provided with a stenosis portion, and the stenosis portion is a stenosis tube structure, and the inner cavity cross-sectional area of the stenosis tube structure is smaller than the inner cavity cross-sectional area of the branch tube connected to the vascular stenosis functional segment.
[0014] Preferably, the vascular stenosis functional section is provided with a stenosis portion, the stenosis portion is a second filler disposed in the lumen, the vascular stenosis functional section is further provided with an expansion section, the lumen cross-sectional area of the expansion section is larger than the lumen cross-sectional area of the branch connected to the vascular stenosis functional section, the second filler is filled in the expansion section, and the second filler is in a soft gel, sponge or paste form;
[0015] At least two sub-functional segments are arranged at the end of the expansion segment, the inner cavity of the expansion segment is communicated with the lumens of the two sub-functional segments, and each sub-functional segment is used to simulate the true cavity or false cavity of a blood vessel.
[0016] Preferably, a thinning section is provided at the end of the functional section or the branch pipe, and the maximum inscribed circle diameter of the inner cavity cross section of at least one point of the thinning section is less than 1 mm.
[0017] Preferably, the plurality of branch pipes are staggeredly arranged on the main pipe in a tree-branch shape, and at least one branch pipe is also bifurcated and connected to a sub-branch pipe.
[0018] The beneficial effects of the present invention are:
[0019] 1. The channel vascular model and the test vascular model are detachable, and different types of test vascular models can be replaced and connected to the channel vascular model. Different test vascular models have different branch shapes and bending degrees of each branch and main pipe, so different test vascular models can be tested to improve the cost-effectiveness of the product.
[0020] 2. The functional segment and the branch tube can be detachably connected, which is convenient for replacing different functional segments to simulate lesions such as intravascular thrombosis and stenosis;
[0021] 3. The stent test functional section adopts a hose structure. The hose is elastic and can simulate the blood vessel wall more realistically. The hose can be quickly installed or removed. Different functional sections use hoses with different outer diameters, inner diameters or hardnesses, which can test different blood vessel walls. After the stent is released, the hose structure can be cut open to recycle the stent.
[0022] 4. A first filler simulating a thrombus is provided in the thrombus simulation functional segment, and different functional segments use first fillers with different hardness or filling lengths. By connecting different functional segments to the ends of the branch tubes, thrombi of different hardness can be tested;
[0023] 5. A stenosis portion is provided in the vascular stenosis functional segment, which is used to simulate vascular stenosis lesions. The combination of the expansion segment and the second filler simulates CTO complete occlusion lesions, so that the guide wire lacks the guidance of the vascular wall when passing through the expansion segment, simulating the blind penetration of the guide wire in real situations. The sub-functional segment can be used to simulate the true lumen and false lumen of the blood vessel, thereby simulating the situation where the guide wire blindly penetrates into the false lumen. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a structural schematic diagram of Example 1;
[0025] Figure 2 It is a structural schematic diagram of Example 2;
[0026] Figure 3 is a side cross-sectional view of the hose of 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 of Example 3;
[0029] Figure 6This is a schematic structural diagram of the first solution of the narrow tube structure of Example 4;
[0030] Figure 7 This is a schematic structural diagram of a second solution of the narrow tube structure of Example 4;
[0031] Figure 8 It is a structural schematic diagram of Example 5;
[0032] Fig. 9 This is a schematic diagram of the structure of Example 6. DETAILED DESCRIPTION
[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[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 a replaceable module and can be a coronary artery model, a cerebrovascular 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 cerebrovascular 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 blood vessel model is made of transparent plastic material, which makes it convenient to observe the inside of the blood vessel model when using the blood vessel model to simulate various surgical scenarios.
[0037] The test blood vessel model 200 of this embodiment adopts a coronary artery model, and the test blood vessel model 200 includes a main pipe 201 and a plurality of branch pipes 202, each branch pipe 202 is respectively connected to the main pipe 201, and the plurality of branch pipes 202 are staggeredly arranged on the main pipe 201 in a tree-like manner, and at least one branch pipe 202 is also bifurcated and connected to a sub-branch pipe 203, and the channel blood vessel model is provided with a left coronary artery port 101 and a right coronary artery port 102 (the left coronary artery port 101 and the right coronary artery port 102 are equivalent to the channel outlet), and a first quick-release structure for easy loading and unloading is provided between the left coronary artery port 101 and / or the right coronary artery port 102 and the main pipe 201 of the test blood vessel model 200, and the first quick-release structure is one or a combination of a sleeve structure, a clamping structure, a locking structure or a threaded structure. When the channel blood vessel model and the test blood vessel model are connected, the lumens of the two are connected to each other.
[0038] The tail end of the branch tube 202 or the sub-branch tube 203 is provided with a first tapered section 2031 with a reduced diameter. When simulating a vascular interventional surgery, the guide wire is first pushed into the first tapered section 2031. Since the diameter of the first tapered section 2031 is small, the end of the guide wire can be embedded, and when the Rx balloon catheter or the OTW balloon catheter is pushed along the guide wire, the guide wire can be effectively prevented from retreating.
[0039] When the first quick-release structure is a sleeve structure, the end of the main tube is provided with a trumpet-shaped connection sleeve 204, and the connection sleeve 204 is sleeved on the outside of the end of the left coronary artery ostium 101 and / or the right coronary artery ostium 102, so as to facilitate the insertion of interventional consumables through the connection between the two and facilitate the operator to quickly disassemble and assemble. The test blood vessel model 200 is provided with multiple branches, and the branch forms and bending degrees of each branch tube 202 and the main tube 201 of different test blood vessel models 200 are different, but the connection sleeve 204 structure of different test blood vessel models is the same. By connecting different test blood vessel models 200 with the left coronary artery ostium 101 and the right coronary artery ostium 102, the test of coronary arteries of different forms can be achieved.
[0040] Example 2
[0041] This embodiment refers to the working principle of embodiment 1, and the difference from embodiment 1 is that:
[0042] like Figure 2 and Figure 3 At least one end of the branch tube 202 or sub-branch tube is connected to a functional segment, and a second quick-release structure for easy loading and unloading is provided between the functional segment and the end of the branch tube 202. The second quick-release structure is one or a combination of a sleeve structure, a snap-on structure, a locking structure or a threaded structure. The functional segment is one or a combination of a stent test functional segment, a simulated thrombus functional segment, and a vascular stenosis functional segment.
[0043] The stent test functional section is made of a hose structure 205 or an openable and closable hard tube structure. The stent test functional section of this embodiment adopts a hose 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, and one end of the hose structure 205 is elastically sleeved on the outside of the anti-slip protrusion 2021 of the branch tube 202. There are multiple stent test functional sections, and different stent test functional sections use hose structures 205 with different outer diameters, inner diameters or hardnesses. By connecting different stent test functional sections to the end of the branch tube 202, testing of different blood vessel walls can be achieved.
[0044] 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 pipe 202 is provided with a blocking portion, and the blocking portion of this embodiment adopts a plug 206 to prevent the simulated blood in the lumen from overflowing, wherein the plug 206 is made of hard material or elastic material, and can be connected to the end of the functional segment or branch pipe 202 by interference insertion. Alternatively, the plug 206 is replaced by other blocking forms, such as a blind hole structure, a clamping structure, or bonding blocking.
[0045] The simulated thrombus functional segment is filled with a first filler 207 for simulating a thrombus, and the first filler 207 is in a jelly or gel state. There are multiple simulated thrombus functional segments, and different simulated thrombus functional segments use first fillers 207 with different hardness or filling lengths. Thrombi of different hardness can be tested by connecting different simulated thrombus functional segments to the end of the branch tube 202.
[0046] Example 3
[0047] This embodiment refers to the working principle of Embodiment 2, and the difference from Embodiment 2 is that:
[0048] like Figures 4 to 5 At least one branch 202 or sub-branch 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 arranged in the lumen, the vascular stenosis functional segment is also provided with an expansion segment 208, the inner cavity cross-sectional area of the expansion segment 208 is larger than the inner cavity cross-sectional area of the branch 202 connected to the vascular stenosis functional segment, the second filler 210 is filled in the expansion segment 208, the second filler is in a soft gel, sponge or paste form, there are multiple vascular stenosis functional segments, and different vascular stenosis functional segments use expansion segments 208 with different inner cavity cross-sectional shapes or different lengths, or use second fillers 210 with different hardness.
[0049] In this embodiment, the expansion section 208 is fixed to the branch tube 202 by a locking sleeve 209, and the expansion section 208 is flat in shape. The expansion section 208 is filled with a second filler 210, and the second filler 210 is used to simulate vascular stenosis. There are multiple vascular stenosis functional sections, and different vascular stenosis functional sections use expansion sections 208 with different cross-sectional shapes or lengths and different hardnesses of the second filler 210. By connecting different vascular stenosis functional sections to the end of the branch tube 202, testing of different vascular stenosis lesions can be achieved.
[0050] The expansion section 208 includes an expansion body 2081 and a thinning section, wherein the maximum inscribed circle diameter of the inner cavity cross section at least at one point of the thinning section is less than 1 mm, and the thinning 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, and the large-diameter end of the blocking sleeve 2082 is sleeved on the outside of the end of the expansion body 2081 away from the branch pipe 202. The blocking sleeve 2082 is used to block the second filler 210 in the expansion body 2081 to prevent the second filler 210 from displacement.
[0051] The small diameter end of the blocking sleeve 2082 is provided with a sealing sleeve 212, which is formed by shrinking a heat shrink tube. 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 overflowing. When simulating vascular intervention surgery, the guide wire is first pushed into the sealing sleeve 212. Since the maximum inscribed circle diameter of the inner cavity cross section of the sealing sleeve 212 is less than 1mm, the end of the guide wire can be embedded, and when the Rx balloon catheter or OTW balloon catheter is pushed along the guide wire, the guide wire can be effectively prevented from retreating.
[0052] Example 4
[0053] This embodiment refers to the working principle of Embodiment 3, and the difference from Embodiment 3 is that:
[0054] like Figure 6 and Figure 7 As shown, the vascular stenosis functional segment is provided with a stenosis portion, and the stenosis portion is a stenosis tube structure 216, and the inner cavity cross-sectional area of the stenosis tube structure 216 is smaller than the inner cavity cross-sectional area of the branch tube 202 connected to the vascular stenosis functional segment, as shown in FIG. Figure 6 The diameter of the tube cavity of the narrow tube structure 216 is reduced from both ends to the middle, or as Figure 7 The middle part 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, and differs from Embodiment 3 in that at least two sub-functional segments are provided at the end of the expansion segment, and each sub-functional segment is used to simulate the true lumen 214 and the false lumen 213 of the blood vessel.
[0057] Specific: such as Figure 8 As shown, two branches are provided on the thinned section which is sleeved on the expansion body 2081, and the two branches 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 pipe is connected to a circulation pump through a pipeline, and the simulated blood is drawn out by the circulation pump and then pumped back into the lumen of the channel blood vessel model and / or the test blood vessel model.
[0060] like Fig. 9 As shown, the ends of one or more functional segments of the test vascular model 200 are connected to the circulation pump 215 through pipelines, and the channel vascular model 100 is connected to the circulation pump 215 through pipelines. 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 active valve, simulating the heart pumping blood into the aorta) to achieve circulation.
[0061] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.
[0062] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A simulated vascular model kit for interventional surgery, characterized in that: It includes a channel blood vessel model and a test blood vessel model, the test blood vessel model includes a main pipe and a plurality of branch pipes, each branch pipe is respectively connected to the main pipe, and at least one channel outlet is provided on the channel blood vessel model, and a first quick-release structure for easy loading and unloading is provided between the channel outlet and the main pipe of the test blood vessel model, the first quick-release structure is one or a combination of a sleeve structure, a clamping structure, a locking structure or a threaded structure, and when the channel blood vessel model and the test blood vessel model are connected, the lumens of the two are connected to each other.
2. The simulated blood vessel model kit for interventional surgery according to claim 1, characterized in that: When the first quick-release structure is a sleeve structure, the end of the main pipe is provided with a bell-shaped connecting sleeve, and the connecting sleeve is sleeved on the outside of the end of the channel outlet.
3. The simulated blood vessel model kit for interventional surgery according to claim 1, characterized in that: A functional segment is connected to the end of at least one of the branches, and a second quick-release structure for easy loading and unloading is provided between the functional segment and the end of the branch. The second quick-release structure is one or a combination of a sleeve structure, a snap-on structure, a locking structure or a threaded structure. The functional segment is one or a combination of a stent test functional segment, a simulated thrombus functional segment, and a vascular stenosis functional segment.
4. The simulated blood vessel model kit for interventional surgery according to claim 3, characterized in that: The bracket test function section adopts a hose structure or an openable and closable hard tube structure. When the bracket test function section adopts a hose structure and the second quick-release structure is a sleeve structure, an anti-slip protrusion is provided at the end of the branch pipe, and one end of the hose structure is elastically sleeved on the outside of the anti-slip protrusion of the branch pipe.
5. The simulated blood vessel model kit for interventional surgery according to claim 3, characterized in that: The channel blood vessel model and the test blood vessel model are provided with simulated blood, and the end of the functional segment or the 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 is sealed in the functional segment and will not flow out; Alternatively, the end of the functional segment or branch tube is connected to a circulation pump through a pipeline, and the simulated blood is drawn out by the circulation pump and then pumped back into the lumen of the channel vascular model and / or the test vascular model.
6. The simulated blood vessel model kit for interventional surgery according to claim 3, characterized in that: The simulated thrombus functional section is filled with a first filler for simulating thrombus, and the first filler is in a jelly or gel state.
7. The simulated blood vessel model kit for interventional surgery according to claim 3, characterized in that: The vascular stenosis functional segment is provided with a stenosis portion, which is a stenosis tube structure, and the inner cavity cross-sectional area of the stenosis tube structure is smaller than the inner cavity cross-sectional area of the branch tube connected to the vascular stenosis functional segment.
8. The simulated blood vessel model kit for interventional surgery according to claim 3, characterized in that: The vascular stenosis functional section is provided with a stenosis portion, and the stenosis portion is a second filler disposed in the lumen. The vascular stenosis functional section is also provided with an expansion section, and the lumen cross-sectional area of the expansion section is larger than the lumen cross-sectional area of the branch connected to the vascular stenosis functional section. The second filler is filled in the expansion section, and the second filler is in a soft gel, sponge or paste form; At least two sub-functional segments are arranged at the end of the expansion segment, the inner cavity of the expansion segment is communicated with the lumens of the two sub-functional segments, and each sub-functional segment is used to simulate the true cavity or false cavity of a blood vessel.
9. The simulated blood vessel model kit for interventional surgery according to claim 3, characterized in that: A thinning section is provided at the end of the functional section or the branch pipe, and the maximum inscribed circle diameter of the inner cavity cross section of at least one point of the thinning section is less than 1 mm.
10. The simulated blood vessel model kit for interventional surgery according to claim 1, characterized in that: The plurality of branch pipes are staggeredly arranged on the main pipe in a tree-branch shape, and at least one branch pipe is bifurcated and connected with a sub-branch pipe.