An intracorporeal thrombus prosthesis delivery device

Abstract

The application relates to the technical field of prosthesis delivery, and mainly discloses a thrombus prosthesis in-vivo delivery device. The device comprises a catheter head, the outer part of the catheter head is slidably connected with a sliding ring, the outer part of the catheter head is slidably connected with a transition ring, a first elastic element is arranged between the sliding ring and the transition ring, the sliding ring is fixedly connected with mirror image distributed guide wires, the catheter head is fixedly connected with a fixing frame, the fixing frame is slidably connected with a sliding plate, and the sliding plate is fixedly connected with a storage soft cloth between the sliding plate and the transition ring. The thrombus prosthesis is installed in the catheter head in advance, and the storage soft cloth is used for flexible fitting, so that the storage soft cloth uniformly stores the thrombus prosthesis, external force is cut off, the structural stability is maintained, then the thrombus prosthesis is delivered into a blood vessel by pulling the storage soft cloth, and the thrombus prosthesis is prevented from being broken due to uneven force by pressure injection.

Description

Technical Field

[0001] This invention relates to the field of prosthesis delivery technology, and in particular proposes an in vivo delivery device for thrombus prostheses. Background Technology

[0002] Thrombosis refers to a blood clot that forms within a blood vessel. It can occur in veins or arteries, obstructing blood flow and causing a series of diseases. Thrombotic diseases have become a major type of disease affecting human health. Currently, there are many new medical devices for thrombotic diseases in China, such as thrombus aspiration catheters and thrombectomy stents. However, these devices require animal studies before entering clinical trials to verify their feasibility, safety, and effectiveness in treating thrombotic diseases. Therefore, creating a suitable thromboembolic model in animal blood vessels is particularly important. There are two main aspects to establishing such a model. There are two main technical approaches to thrombus injection: the first involves creating a thrombus outside the body and then introducing it into the body using specialized equipment; the second involves injecting thrombin to induce thrombus formation in situ within the target blood vessel. When using the first approach, most existing in vitro injection methods involve guiding a microcatheter along the blood vessel to the desired location, and then delivering the thrombus prosthesis into the vessel via external pressure injection. During this process, the thrombus prosthesis is subjected to uneven external pressure, making it highly susceptible to rupture due to this uneven pressure, leading to delivery failure and compromising the stability of the thrombus prosthesis structure. Summary of the Invention

[0003] In order to overcome the shortcomings mentioned in the background art, the present invention provides an in vivo delivery device for a thrombus prosthesis.

[0004] The technical solution of the present invention is: an intra-body delivery device for a thrombus prosthesis, comprising a catheter head, a sliding ring slidably connected to the outside of the catheter head, a transition ring slidably connected to the outside of the catheter head, a first elastic element disposed between the sliding ring and the transition ring, guide wires with mirror distribution fixedly connected to the side of the sliding ring away from the transition ring, a fixing frame fixedly connected to the inside of the catheter head, a sliding plate slidably connected to the fixing frame, a storage soft cloth fixedly connected between the sliding plate and the transition ring, a second elastic element with mirror distribution disposed between the sliding plate and the fixing frame, and a cutting component for cutting the thrombus prosthesis disposed inside the catheter head.

[0005] Furthermore, the tensile force of the first elastic element is greater than the sum of the elastic forces of the mirror-distributed second elastic elements.

[0006] Furthermore, the cutting assembly includes a first rotating ring disposed inside the catheter head, a second rotating ring disposed inside the catheter head, a spring sheet fixedly connected between the first rotating ring and the second rotating ring, and a pushing assembly for pushing the first rotating ring disposed inside the catheter head.

[0007] Furthermore, the spring is V-shaped, and the sharp end of the spring is close to the central axis of the sliding plate.

[0008] Furthermore, the width of the reed gradually decreases from both ends to the middle to reduce the resistance to compressing the thrombus prosthesis.

[0009] Furthermore, the pushing component includes an air injection ring, which is rotatably connected to the inside of the conduit head. The side of the air injection ring away from the first rotating ring is fixedly connected to and communicates with a first air injection tube. The side of the air injection ring close to the first rotating ring is sealed and slidably connected to a driving column, which is fixedly connected to the first rotating ring. The air injection ring is provided with a sliding component for the first rotating ring and the second rotating ring to slide synchronously.

[0010] Furthermore, the sliding component includes a first rack, which is fixedly connected to the side of the second rotating ring near the first rotating ring. The first rack passes through the first rotating ring and the two are slidably connected to each other. A second rack is fixedly connected to the side of the first rotating ring near the gas injection ring. The gas injection ring is rotatably connected to a gear. Both the first rack and the second rack mesh with the gear. The guide head is provided with a rotating component for driving the gas injection ring to rotate.

[0011] Furthermore, it also includes a rotating assembly for driving the gas injection ring to rotate. The rotating assembly is disposed inside the guide tube head. The rotating assembly includes a connecting cylinder, which is fixedly connected to the gas injection ring. A sliding groove is provided inside the connecting cylinder. A pusher is slidably connected to the fixed frame. A locking block is fixedly connected to the side of the pusher near the connecting cylinder. The locking block is slidably connected to the sliding groove. Both the first rotating ring and the second rotating ring are rotatably and slidably connected to the guide tube head. A drive assembly for driving the pusher to move is provided inside the guide tube head.

[0012] Furthermore, the groove is a spiral groove, and the spiral angle of the groove is ≥360°.

[0013] Furthermore, the drive assembly includes an air injection cylinder, which is fixedly connected to the inside of the guide tube head. A second air injection pipe is fixedly connected to the air injection cylinder. A piston shaft is slidably connected inside the air injection cylinder. The air injection cylinder and the piston shaft cooperate to form a sealed cavity. The second air injection pipe communicates with the sealed cavity. The piston shaft is fixedly connected to the push frame.

[0014] The beneficial effects are: 1. By pre-installing the thrombus prosthesis in the catheter tip and simultaneously using a soft storage cloth to flexibly fit it, the soft storage cloth can evenly store the thrombus prosthesis while isolating it from external forces and maintaining its structural stability. Then, by pulling the soft storage cloth, the thrombus prosthesis can be delivered into the blood vessel, avoiding the thrombus prosthesis from rupturing due to uneven force during pressure injection.

[0015] 2. By having two mirror-distributed springs contact and compress the storage soft cloth to deform it and block the thrombus prosthesis located inside, the probability of the thrombus entering the blood vessel prematurely is reduced. This prevents the thrombus prosthesis inside the storage soft cloth from entering the blood vessel prematurely when the device moves along the blood vessel, thus avoiding the failure of thrombus prosthesis delivery.

[0016] 3. By alternately rotating forward and backward on two mirror-distributed reeds, the thrombus prosthesis located in the storage soft cloth is squeezed and cut, and the thrombus prosthesis is circumferentially cut. The volume of the thrombus prosthesis that is delivered into the blood vessel can be adjusted autonomously.

[0017] 4. The deformation of the storage soft cloth is adapted by the deformation of the first elastic element and the second elastic element to reduce the wear of the spring on the storage soft cloth, while keeping the storage soft cloth taut to ensure that the cut thrombus prosthesis can enter the blood vessel. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional cross-sectional view of the catheter tip and storage soft cloth of the present invention;

[0020] Figure 3 This is a three-dimensional cross-sectional view of the catheter tip of the present invention;

[0021] Figure 4 This is a three-dimensional structural diagram of the first and second rotating rings of the present invention;

[0022] Figure 5 This is a three-dimensional structural diagram of the gas injection ring and gas injection cylinder of the present invention.

[0023] In the attached diagram, the following are the reference numerals: 1-guide tube head, 2-sliding ring, 3-transition ring, 4-first elastic element, 5-guide wire, 6-fixed frame, 7-sliding plate, 8-storage soft cloth, 9-second elastic element, 201-first rotating ring, 202-second rotating ring, 203-spring, 204-injection ring, 205-first injection tube, 206-drive column, 207-first rack, 208-second rack, 209-gear, 301-connecting cylinder, 302-slide groove, 303-push frame, 304-block, 305-injection cylinder, 306-second injection tube, 307-piston shaft. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0025] Most existing extracorporeal injection methods involve using a microcatheter to travel along the blood vessel to the desired location, and then delivering the thrombus prosthesis into the blood vessel through external pressure injection. During this process, the thrombus prosthesis is subjected to external injection force, and the force on its external surface is uneven. It is very easy for it to rupture due to uneven pressure during the injection process, resulting in delivery failure and failing to guarantee the stability of the thrombus prosthesis structure.

[0026] Example 1: An in vivo delivery device for a thrombus prosthesis, such as Figure 1 and Figure 2As shown, the catheter includes a catheter head 1, which is connected to a microcatheter for easy delivery. A sliding ring 2 and a transition ring 3 are slidably connected to the outside of the catheter head 1, with the transition ring 3 positioned above the sliding ring 2. A first elastic element 4, a tension spring, is positioned between the sliding ring 2 and the transition ring 3 to reposition the transition ring 3. Two guidewires 5, mirror-distributed, are fixedly connected to the lower side of the sliding ring 2, pulling the sliding ring 2 downwards along the catheter head 1. The sliding ring 2, via the first elastic element 4, drives the transition ring 3 to move synchronously. A fixing frame 6 is fixedly connected inside the catheter head 1, with a sliding plate 7 slidably connected to the upper part of the fixing frame 6. A storage soft cloth 8 is fixedly connected between the sliding plate 7 and the transition ring 3, used to store the thrombus prosthesis. The transition ring 3 drives the storage soft cloth 8 to move synchronously. The soft cloth 8 slides outward to release the thrombus prosthesis. A second elastic element 9, which is a spring, is provided between the sliding plate 7 and the fixing frame 6. The second elastic element 9 is used to drive the sliding plate 7 to reset. The tension of the first elastic element 4 is greater than the sum of the elastic forces of the two mirror-distributed second elastic elements 9. When the transition ring 3 pulls the soft cloth 8 to release the thrombus prosthesis, the second elastic element 9 is compressed first. The catheter head 1 is provided with a cutting component for cutting the thrombus prosthesis. By pre-installing the thrombus prosthesis in the catheter head 1 and flexibly fitting it with the soft cloth 8, the soft cloth 8 can evenly store the thrombus prosthesis, while isolating external forces and maintaining its structural stability. Then, by pulling the soft cloth 8, the thrombus prosthesis is delivered into the blood vessel, avoiding the rupture of the thrombus prosthesis due to pressure injection.

[0027] like Figures 2-4 As shown, the cutting assembly includes a first rotating ring 201, which is disposed inside the catheter head 1. A second rotating ring 202 is disposed at the top of the catheter head 1. Two mirror-distributed springs 203 are fixedly connected between the first rotating ring 201 and the second rotating ring 202. The springs 203 are V-shaped, and the sharp ends of the springs 203 are close to the central axis of the sliding plate 7. Before the thrombus prosthesis is delivered, the two springs 203 are bent in opposite directions, so that the middle parts of the springs 203 move in opposite directions and contact each other with the storage soft cloth 8, blocking the thrombus prosthesis in the storage soft cloth 8. This prevents the thrombus prosthesis in the storage soft cloth 8 from entering the blood vessel in advance when the device moves along the blood vessel, which would cause the thrombus prosthesis delivery to fail. The width of the springs 203 gradually decreases from the upper and lower ends to the middle to reduce the resistance of squeezing the thrombus prosthesis. A pushing assembly for pushing the first rotating ring 201 is disposed inside the catheter head 1.

[0028] like Figures 2-4As shown, the pushing assembly includes an injection ring 204, which is rotatably connected to the middle of the conduit head 1. The lower side of the injection ring 204 is fixedly connected to and communicates with a first injection pipe 205, which is connected to an external first injection device. The upper side of the injection ring 204 is sealed and slidably connected to a drive column 206, which is fixedly connected to a first rotating ring 201. By injecting gas into the injection ring 204, the gas pushes the drive column 206 to move outward along the injection ring 204, causing the drive column 206 to drive the first rotating ring 201 to move synchronously, thereby reducing the distance between the first rotating ring 201 and the second rotating ring 202, causing the spring 203 between them to bend. The injection ring 204 is provided with a sliding assembly for the synchronous sliding of the first rotating ring 201 and the second rotating ring 202.

[0029] like Figure 3 and Figure 4 As shown, the sliding assembly includes a first rack 207, which is fixedly connected to the lower side of the second rotating ring 202. The first rack 207 passes through the first rotating ring 201 and the two are slidably connected to each other. A second rack 208 is fixedly connected to the lower side of the first rotating ring 201. A gear 209 is rotatably connected to the upper side of the air injection ring 204. Both the first rack 207 and the second rack 208 mesh with the gear 209. The second rack 208 drives the first rack 207 to move in opposite directions through the gear 209, so that the first rotating ring 201 and the second rotating ring 202 move in opposite directions at equal distances, so that the bending position of the spring 203 between the two is located in the middle. A rotating assembly for pushing the air injection ring 204 to rotate is provided inside the guide head 1.

[0030] When a thrombus prosthesis needs to be delivered into a blood vessel in an animal, the staff places the pre-prepared thrombus prosthesis inside a storage cloth 8, then turns on the external first gas injection device to inject gas into the first gas injection tube 205. At this time, the gas flows along the first gas injection tube 205 to the inside of the gas injection ring 204, and then the gas in the gas injection ring 204 pushes the drive column 206 outward. At this time, the drive column 206 drives the first rotating ring 201 to slide upward along the catheter head 1. Simultaneously, the first rotating ring 201 drives the second rack 208 on it to move upward in sync. The second rack 208 drives the gear 209 to rotate, so that the gear 209 drives the first rack 207 downward. During the movement, the first rack 207 drives the second rotating ring 202 to move downwards synchronously. At this time, the first rotating ring 201 and the second rotating ring 202 move in opposite directions, causing the two springs 203, which are mirror-distributed between them, to bend and compress the storage soft cloth 8, causing the storage soft cloth 8 to deform. This continues until the two mirror-distributed springs 203 come into contact with each other across the storage soft cloth 8. Then, the first external air injection device is turned off. At this time, the thrombus prosthesis located in the storage soft cloth 8 is sealed, reducing the probability of the thrombus entering the blood vessel prematurely. This prevents the thrombus prosthesis in the storage soft cloth 8 from entering the blood vessel prematurely when the device moves along the blood vessel, which would lead to the failure of thrombus prosthesis delivery.

[0031] After the thrombus prosthesis is placed and sealed in the storage soft cloth 8, the device is then punctured into the animal's blood vessel. The device is then pushed along the blood vessel through a microcatheter until it reaches the position where the thrombus prosthesis needs to be injected, at which point it stops moving. Then, the staff turns on the external first gas injection device to draw back the gas in the gas injection ring 204, and then turns off the first gas injection device. At this time, the drive column 206 slides inward along the gas injection ring 204 to reset. The drive column 206 drives the first rotating ring 201 to move downward to reset. At the same time, the first rotating ring 201 drives the second rotating ring 202 to reset upward synchronously through the second rack 208, gear 209 and the first rack 207. At this time, the first rotating ring 201 and the second rotating ring 202 move in opposite directions, causing the mirror-distributed springs 203 between them to separate and reset to their initial state, thus releasing the seal on the thrombus prosthesis in the storage soft cloth 8.

[0032] After the blockage of the thrombus prosthesis inside the storage soft cloth 8 is released, the staff pulls the sliding ring 2 through the mirror-distributed guide wire 5, causing the sliding ring 2 to slide along the catheter head 1. At this time, the sliding ring 2 drives the transition ring 3 to slide synchronously through the first elastic element 4. The transition ring 3 pulls the storage soft cloth 8, causing the storage soft cloth 8 to drive the sliding plate 7 to slide along the fixation frame 6. At this time, the mirror-distributed second elastic element 9 is compressed, and the storage soft cloth 8 drives the thrombus prosthesis inside to move outward synchronously, so that the thrombus prosthesis gradually enters the blood vessel. This continues until the thrombus prosthesis is completely entered into the blood vessel, at which point the thrombus prosthesis delivery is completed.

[0033] After the thrombus prosthesis is injected, the staff releases the tension on the guidewire 5, then removes the device along the blood vessel. The first elastic element 4 resets, causing the transition ring 3 to reset. At the same time, the second elastic element 9 resets, causing the sliding plate 7 to reset synchronously. Simultaneously, the sliding plate 7, through the storage soft cloth 8, causes the transition ring 3, the sliding ring 2, and the first elastic element 4 to reset to their initial state. Then, the staff cleans the remaining thrombus prosthesis inside the storage soft cloth 8. When it is necessary to deliver the thrombus prosthesis into the animal again, the above steps are repeated.

[0034] In this embodiment, both the first rotating ring 201 and the second rotating ring 202 are rotatably connected to the catheter head 1. In the following embodiments, both the first rotating ring 201 and the second rotating ring 202 are rotatably and slidably connected to the catheter head 1.

[0035] Example 2: Based on Example 1, such as Figure 4 and Figure 5As shown, it also includes a rotating assembly for driving the air injection ring 204 to rotate. The rotating assembly is disposed inside the guide tube head 1. The rotating assembly includes a connecting cylinder 301, which is fixedly connected to the air injection ring 204. The connecting cylinder 301 has a sliding groove 302 inside, which is a spiral groove with a spiral angle ≥360°. This is used to make the rotation angle of the air injection ring 204 ≥360°, so that the air injection ring 204 drives the first rotating ring 201 to rotate by an angle ≥360° through the drive column 206, so that the two springs 203 come into contact and rotate. The spring 203 squeezes and breaks the thrombus prosthesis through the storage soft cloth 8, allowing the staff to independently adjust the volume of the thrombus prosthesis delivered into the blood vessel. The fixing frame 6 is slidably connected to the push frame 303. The upper side of the push frame 303 is fixedly connected to the locking block 304. The locking block 304 is slidably connected to the slide groove 302. The first rotating ring 201 and the second rotating ring 202 are both rotatably and slidably connected to the catheter head 1. The locking block 304 slides with the slide groove 302 and drives the air injection ring 204 to rotate. The catheter head 1 is provided with a drive component for pushing the push frame 303 to move.

[0036] like Figure 4 and Figure 5 As shown, the drive assembly includes an air injection cylinder 305, which is fixedly connected to the lower part of the guide tube head 1. A second air injection pipe 306 is fixedly connected to the lower side of the air injection cylinder 305. The second air injection pipe 306 is connected to an external second air injection device. A piston shaft 307 is slidably connected inside the air injection cylinder 305. The air injection cylinder 305 and the piston shaft 307 cooperate to form a sealed cavity. The second air injection pipe 306 is connected to the sealed cavity. By injecting gas into the sealed cavity, the gas pushes the pusher frame 303 to move through the piston shaft 307. The piston shaft 307 is fixedly connected to the pusher frame 303.

[0037] During the injection of the thrombus prosthesis, the amount injected into different blood vessels varies, which makes it easier to control the amount of thrombus prosthesis injected into the blood vessel. The staff pulls the mirror-distributed guide wire 5 to deliver the required amount of thrombus prosthesis into the blood vessel. Then, the staff turns on the first external gas injection device again to inject gas into the gas injection ring 204 again. The above steps are repeated until the two springs 203 bend and contact each other, and then the gas injection device is turned off again.

[0038] When the two reeds 203 come into contact, the storage soft cloth 8 is compressed, causing the internal thrombus prosthesis to deform. Then, the operator turns on the second air injection device to inject gas into the second air injection tube 306. At this time, the gas enters the sealed cavity formed by the air injection cylinder 305 and the piston shaft 307 along the second air injection tube 306. Then, the gas pushes the piston shaft 307 to slide upward. The piston shaft 307 drives the pusher 303 to slide synchronously. The pusher 303 drives the locking block 304 on it to move synchronously. At this time, the locking block 304 slides along the slide groove 302, causing the locking block 304 to push the connecting cylinder 301 to rotate. The connecting cylinder 301 drives the air injection ring 204 to rotate synchronously. The air injection ring 204 drives the first rotating ring 201 to rotate synchronously through the drive column 206. The first rotating ring 201 drives the two mirror-distributed reeds 203. The system rotates synchronously until the locking block 304 slides to the limit position of the slide groove 302. Then, the second gas injection device draws gas from the gas injection cylinder 305 and the piston shaft 307 to form a sealed cavity. The piston shaft 307 drives the locking block 304 to return to its initial state through the push frame 303. This causes the connecting cylinder 301 to drive the gas injection ring 204 to rotate in the opposite direction. The gas injection ring 204 drives the two mirror-distributed springs 203 to rotate synchronously in the opposite direction through the drive column 206 and the first rotating ring 201. Then, gas is injected into the sealed cavity again. This cycle is repeated three to five times. By alternating forward and reverse rotation of the two mirror-distributed springs 203, the thrombus prosthesis located in the storage soft cloth 8 is squeezed and cut. The thrombus prosthesis is circumferentially cut, and under the action of blood in the blood vessel, the cut thrombus prosthesis enters the blood vessel.

[0039] Once the thrombus prosthesis enters the blood vessel, the staff stops the second inflator and removes the device along the blood vessel. Then, the first inflator is activated to extract the gas from the inflator ring 204. The above steps are repeated to separate the two springs 203 and restore them to their initial state. At this point, the blockage of the thrombus prosthesis in the storage cloth 8 is released, and any remaining thrombus prosthesis in the storage cloth 8 is cleaned out. The above steps are repeated when a thrombus prosthesis needs to be injected into the blood vessel again.

[0040] When the transition ring 3 pulls the storage soft cloth 8 to deliver the thrombus prosthesis into the blood vessel, the storage soft cloth 8 is in a taut state. When the two mirror-distributed springs 203 squeeze and cut the thrombus prosthesis, the springs 203 will cause the storage soft cloth 8 to deform towards the center. At this time, the storage soft cloth 8 will pull the transition ring 3 and the sliding plate 7 on both sides to move. At this time, the transition ring 3 slides along the catheter head 1 under the pulling force of the storage soft cloth 8. At the same time, the first elastic element 4 is stretched, and the sliding plate 7 slides along the fixation frame 6 under the pulling force of the storage soft cloth 8. At the same time, the two mirror-distributed second elastic elements 9 are further compressed. The deformation of the first elastic element 4 and the second elastic element 9 adapts to the deformation of the storage soft cloth 8, so as to reduce the wear of the springs 203 on the storage soft cloth 8, and at the same time keep the storage soft cloth 8 in a taut state, so as to ensure that the cut thrombus prosthesis can enter the blood vessel.

[0041] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An in vivo delivery device for a thrombus prosthesis, characterized in that: The catheter includes a catheter tip (1), a sliding ring (2) is slidably connected to the outside of the catheter tip (1), a transition ring (3) is slidably connected to the outside of the catheter tip (1), a first elastic element (4) is provided between the sliding ring (2) and the transition ring (3), a guide wire (5) with a mirror distribution is fixedly connected to the side of the sliding ring (2) away from the transition ring (3), a fixing frame (6) is fixedly connected inside the catheter tip (1), a sliding plate (7) is slidably connected to the fixing frame (6), a storage soft cloth (8) is fixedly connected between the sliding plate (7) and the transition ring (3), a second elastic element (9) with a mirror distribution is provided between the sliding plate (7) and the fixing frame (6), and a cutting component for cutting the thrombus prosthesis is provided inside the catheter tip (1). The cutting assembly includes a first rotating ring (201), which is disposed inside the catheter head (1). A second rotating ring (202) is disposed inside the catheter head (1). A spring (203) is fixedly connected between the first rotating ring (201) and the second rotating ring (202). A pushing assembly for pushing the first rotating ring (201) is disposed inside the catheter head (1). The pushing component includes an air injection ring (204), which is rotatably connected to the inside of the conduit head (1). The side of the air injection ring (204) away from the first rotating ring (201) is fixedly connected to and communicates with a first air injection tube (205). The side of the air injection ring (204) close to the first rotating ring (201) is sealed and slidably connected to a drive column (206). The drive column (206) is fixedly connected to the first rotating ring (201). The air injection ring (204) is provided with a sliding component for the first rotating ring (201) and the second rotating ring (202) to slide synchronously.

2. The thrombus prosthesis delivery device according to claim 1, characterized in that: The tension of the first elastic element (4) is greater than the sum of the elastic forces of the mirror-distributed second elastic elements (9).

3. The thrombus prosthesis delivery device according to claim 1, characterized in that: The reed (203) is V-shaped, and the sharp part of the reed (203) is close to the central axis of the sliding plate (7).

4. The thrombus prosthesis delivery device according to claim 1, characterized in that: The width of the reed (203) gradually decreases from both ends to the middle to reduce the resistance of squeezing the thrombus prosthesis.

5. The thrombus prosthesis delivery device according to claim 1, characterized in that: The sliding assembly includes a first rack (207), which is fixedly connected to the side of the second rotating ring (202) near the first rotating ring (201). The first rack (207) passes through the first rotating ring (201) and the two are slidably connected to each other. The side of the first rotating ring (201) near the gas injection ring (204) is fixedly connected to a second rack (208). The gas injection ring (204) is rotatably connected to a gear (209). The first rack (207) and the second rack (208) are both meshed with the gear (209). The guide head (1) is provided with a rotating assembly for pushing the gas injection ring (204) to rotate.

6. The thrombus prosthesis delivery device according to claim 5, characterized in that: It also includes a rotating assembly for driving the gas injection ring (204) to rotate. The rotating assembly is disposed inside the conduit head (1). The rotating assembly includes a connecting cylinder (301). The connecting cylinder (301) is fixedly connected to the gas injection ring (204). A sliding groove (302) is provided inside the connecting cylinder (301). A pusher (303) is slidably connected to the fixing frame (6). A locking block (304) is fixedly connected to the side of the pusher (303) near the connecting cylinder (301). The locking block (304) is slidably connected to the sliding groove (302). The first rotating ring (201) and the second rotating ring (202) are both rotatably and slidably connected to the conduit head (1). A drive assembly for driving the pusher (303) to move is provided inside the conduit head (1).

7. The thrombus prosthesis delivery device according to claim 6, characterized in that: The groove (302) is a spiral groove, and the spiral angle of the groove (302) is ≥360°.

8. The thrombus prosthesis delivery device according to claim 6, characterized in that: The drive assembly includes an air injection cylinder (305), which is fixedly connected to the inside of the guide head (1). The air injection cylinder (305) is fixedly connected to a second air injection pipe (306). A piston shaft (307) is slidably connected inside the air injection cylinder (305). The air injection cylinder (305) and the piston shaft (307) cooperate to form a sealed cavity. The second air injection pipe (306) communicates with the sealed cavity. The piston shaft (307) is fixedly connected to the push frame (303).

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