Thrombus prosthesis in-vivo conveying device

Abstract

The invention relates to the technical field of prosthesis conveying, and mainly relates to a thrombus prosthesis in-vivo conveying device. Comprising a catheter head, the outer portion of the catheter head is in sliding connection with a sliding ring, the outer portion of the catheter head is in sliding connection 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 guide wires distributed in a mirror image mode, and the catheter head is fixedly connected with a fixing frame. The fixing frame is slidably connected with a sliding plate, and storage soft cloth is fixedly connected between the sliding plate and the transition ring. The thrombus prosthesis is installed in the catheter head in advance, meanwhile, the storage soft cloth is flexibly attached to the thrombus prosthesis, the thrombus prosthesis is evenly stored through the storage soft cloth, external acting force is cut off, the structural stability of the thrombus prosthesis is maintained, then the thrombus prosthesis is conveyed into a blood vessel by pulling the storage soft cloth, pressure injection of the thrombus prosthesis is avoided, and the thrombus prosthesis is prevented from being damaged. And cracks occur due to uneven stress.

Description

Technical Field

[0001] The present invention is directed to the technical field of prosthesis delivery, and in particular proposes a thrombus prosthesis in vivo delivery device. Background Art

[0002] Thrombosis refers to a blood clot formed in a blood vessel. It can occur in veins or arteries, resulting in blood flow obstruction and a series of diseases. Thrombotic diseases have become a major type of disease that affects people's lives and health. At present, there are many new medical devices for thrombotic diseases in China, such as thrombus aspiration catheters and thrombectomy stents. However, these related devices need to be studied in animals before entering the clinic to verify the feasibility, safety and effectiveness of the device in treating thrombotic diseases. Therefore, it is particularly important to create a suitable thromboembolic model in animal blood vessels. There are two main ways to establish such a model. There are two technical lines. The first one is to make a thrombus in vitro and inject it into the body through certain equipment. The second one is to form a thrombus in situ in the target blood vessel in the body by injecting thrombin. When the first technical line is injected into the animal body, the existing in vitro injection methods mostly use a microcatheter to move along the blood vessel to the desired position, and then the thrombus prosthesis is delivered to the blood vessel by external pressure injection. In this process, the thrombus prosthesis is affected by the external push force, and the force on the outside is uneven. During the injection process, it is very easy to rupture due to uneven pressure, resulting in delivery failure and the stability of the thrombus prosthesis structure cannot be guaranteed. Summary of the invention

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

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

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

[0006] Furthermore, the cutting assembly includes a first swivel, which is arranged inside the catheter head, and a second swivel is arranged inside the catheter head. A spring is fixedly connected between the first swivel and the second swivel, and a pushing assembly for pushing the first swivel is arranged inside the catheter head.

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

[0008] Furthermore, the width of the spring sheet gradually decreases from both ends to the middle, so as to reduce the resistance of squeezing the thrombus prosthesis.

[0009] Furthermore, the pushing assembly includes an injection ring, which is rotatably connected to the inside of the catheter head, and the side of the injection ring away from the first rotating ring is fixedly connected and connected to the first injection pipe, and the side of the injection ring close to the first rotating ring is sealingly and slidably connected to a driving column, and the driving column is fixedly connected to the first rotating ring. The injection ring is provided with a sliding assembly for synchronous sliding of the first rotating ring and the second rotating ring.

[0010] Furthermore, the sliding assembly includes a first rack, which is fixedly connected to the side of the second swivel close to the first swivel, the first rack passes through the first swivel, and the two are slidably connected to each other, the side of the first swivel close to the gas injection ring is fixedly connected to the second rack, the gas injection ring is rotatably connected to a gear, the first rack and the second rack are both meshed with the gear, and a rotating assembly for driving the gas injection ring to rotate is provided inside the catheter head.

[0011] Furthermore, it also includes a rotating component for driving the gas injection ring to rotate, the rotating component is arranged inside the catheter head, the rotating component includes a connecting tube, the connecting tube is fixedly connected to the gas injection ring, a slide groove is arranged inside the connecting tube, the fixed frame is slidably connected to a pushing frame, the pushing frame is fixedly connected to a clamping block on a side close to the connecting tube, the clamping block is slidably connected to the slide groove, the first rotating ring and the second rotating ring are both rotatably and slidably connected to the catheter head, and a driving component for driving the pushing frame to move is arranged inside the catheter head.

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

[0013] Furthermore, the driving assembly includes an air injection cylinder, which is fixedly connected to the interior of the catheter head, and is fixedly connected to a second air injection pipe. A piston shaft is sealingly and slidably connected to the interior of the air injection cylinder, and the air injection cylinder and the piston shaft cooperate to form a closed cavity. The second air injection pipe is connected to the closed cavity, and the piston shaft is fixedly connected to the pushing frame.

[0014] The beneficial effects are: 1. By installing the thrombus prosthesis in the catheter head in advance and flexibly fitting the storage soft cloth to it, the storage soft cloth can evenly store the thrombus prosthesis and isolate the external force to maintain its structural stability. Then, the thrombus prosthesis is delivered to the blood vessel by pulling the storage soft cloth to avoid the thrombus prosthesis from rupture due to uneven force during pressure injection.

[0015] 2. The two mirror-distributed springs contact each other to squeeze the storage soft cloth to deform and seal the thrombus prosthesis inside it, thereby reducing the probability of thrombus entering the blood vessel prematurely and preventing the thrombus prosthesis in the storage soft cloth from entering the blood vessel prematurely when the device moves along the blood vessel, resulting in failure of thrombus prosthesis delivery.

[0016] 3. The two mirror-distributed reeds rotate alternately forward and reverse to squeeze and cut the thrombus prosthesis in the storage soft cloth, and the thrombus prosthesis is cut circumferentially, and the volume of the thrombus prosthesis delivered into the blood vessel can be autonomously adjusted.

[0017] 4. The deformation of the first elastic element and the second elastic element adapts to the deformation of the storage soft cloth to reduce the degree of wear of the spring on the storage soft cloth, while keeping the storage soft cloth in a taut state to ensure that the cut thrombus prosthesis can enter the blood vessel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic cross-sectional view of the three-dimensional structure of the catheter head and the storage soft cloth of the present invention; Figure 3 It is a schematic cross-sectional view of the three-dimensional structure of the catheter head of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the first rotating ring and the second rotating ring of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the gas injection ring and the gas injection cylinder of the present invention.

[0019] In the figure markings: 1-catheter 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 swivel, 202-second swivel, 203-reed, 204-injection ring, 205-first injection tube, 206-driving column, 207-first rack, 208-second rack, 209-gear, 301-connecting cylinder, 302-slide groove, 303-pushing frame, 304-block, 305-injection cylinder, 306-second injection tube, 307-piston shaft. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0021] Most of the existing in vitro injection methods use a microcatheter to move along the blood vessel to the desired position, and then the thrombus prosthesis is delivered into the blood vessel by external pressure injection. During this process, the thrombus prosthesis is affected by the external push force, and the force on the outside is uneven. During the injection process, it is very easy to rupture due to uneven pressure, resulting in delivery failure, and the stability of the thrombus prosthesis structure cannot be guaranteed.

[0022] Embodiment 1: A thrombus prosthesis in vivo delivery device, such as Figure 1 and Figure 2As shown, it includes a catheter head 1, which is connected to a microcatheter to facilitate transportation by staff. A sliding ring 2 is slidably connected to the outside of the catheter head 1. A transition ring 3 is slidably connected to the outside of the catheter head 1, and the transition ring 3 is located above the sliding ring 2. A first elastic element 4 is arranged between the sliding ring 2 and the transition ring 3. The first elastic element 4 is a tension spring, which is used to drive the transition ring 3 to reset. Two guide wires 5 distributed in a mirror image are fixedly connected to the lower side of the sliding ring 2. The guide wires 5 are used to pull the sliding ring 2 to move downward along the catheter head 1. The sliding ring 2 drives the transition ring 3 to move synchronously through the first elastic element 4. A fixing frame 6 is fixedly connected to the inside of the catheter head 1. A sliding plate 7 is 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. The storage soft cloth 8 is used to store a thrombus prosthesis. The transition ring 3 drives the storage soft cloth 8 to move synchronously. The storage soft cloth 8 slides outward to release the thrombus prosthesis, and a second elastic element 9 with mirror distribution is arranged between the sliding plate 7 and the fixing frame 6. The second elastic element 9 is a spring, and the second elastic element 9 is used to drive the sliding plate 7 to reset. The pulling force of the first elastic element 4 is greater than the sum of the elastic forces of the two second elastic elements 9 with mirror distribution, and when the transition ring 3 pulls the storage soft cloth 8 to release the thrombus prosthesis, the second elastic element 9 is preferentially compressed. A cutting component for cutting off the thrombus prosthesis is arranged inside the catheter head 1. The thrombus prosthesis is installed in the catheter head 1 in advance, and the storage soft cloth 8 is flexibly fitted thereto, so that the storage soft cloth 8 evenly stores the thrombus prosthesis and isolates the external force to maintain its structural stability. Then, the thrombus prosthesis is transported into the blood vessel by pulling the storage soft cloth 8 to avoid the rupture of the thrombus prosthesis due to pressure injection.

[0023] like Figure 2-Figure 4 As shown, the cutting assembly includes a first swivel 201, which is arranged inside the catheter head 1, and a second swivel 202 is arranged on the top of the catheter head 1, and two mirror-distributed springs 203 are fixedly connected between the first swivel 201 and the second swivel 202, and the spring 203 is V-shaped, and the sharp part of the spring 203 is close to the central axis of the sliding plate 7. Before the thrombus prosthesis is delivered, the two springs 203 are bent toward each other so that the middle parts of the springs 203 move toward each other and contact with the storage cloth 8 separated by each other, thereby blocking the thrombus prosthesis in the storage cloth 8, so as to prevent the thrombus prosthesis in the storage cloth 8 from entering the blood vessel in advance when the device moves along the blood vessel, resulting in failure of the thrombus prosthesis delivery, and the width of the spring 203 from the upper and lower ends to the middle part gradually decreases, which is used to reduce the resistance of squeezing the thrombus prosthesis, and a pushing assembly for pushing the first swivel 201 is arranged in the catheter head 1.

[0024] like Figure 2-Figure 4As shown, the pushing component includes an injection ring 204, which is rotatably connected to the middle part of the catheter head 1, and the lower side of the injection ring 204 is fixedly connected and connected to a first injection pipe 205, and the first injection pipe 205 is connected to an external first injection device. The upper side of the injection ring 204 is sealed and slidably connected with a driving column 206, and the driving column 206 is fixedly connected to the first rotating ring 201. By injecting gas into the injection ring 204, the gas pushes the driving column 206 to move outward along the injection ring 204, so that the driving column 206 drives the first rotating ring 201 to move synchronously, thereby reducing the distance between the first rotating ring 201 and the second rotating ring 202, driving the reed 203 between the two to bend, and a sliding component for the synchronous sliding of the first rotating ring 201 and the second rotating ring 202 is provided on the injection ring 204.

[0025] like Figure 3 and Figure 4 As shown, the sliding assembly includes a first rack 207, the first rack 207 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, the lower side of the first rotating ring 201 is fixedly connected to the second rack 208, the upper side of the gas injection ring 204 is rotatably connected to the gear 209, the first rack 207 and the second rack 208 are both engaged 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 an equal distance, so that the bending position of the spring leaf 203 therebetween is located in the middle, and a rotating assembly for driving the gas injection ring 204 to rotate is arranged inside the catheter head 1.

[0026] When it is necessary to deliver the thrombus prosthesis to the blood vessels in the animal body, the staff will place the thrombus prosthesis prepared in advance in the storage soft cloth 8, and then turn on the first gas injection device outside to inject gas into the first gas injection pipe 205. At this time, the gas flows along the first gas injection pipe 205 to the inside of the gas injection ring 204, and then the gas in the gas injection ring 204 pushes the driving column 206 to protrude outward. At this time, the driving column 206 drives the first rotating ring 201 to slide upward along the catheter head 1, and at the same time, the first rotating ring 201 drives the second rack 208 thereon to move upward synchronously, and the second rack 208 drives the gear 209 to rotate, so that the gear 209 drives the first rack 207 downward. The first rack 207 drives the second rotating ring 202 to move downward synchronously. At this time, the first rotating ring 201 and the second rotating ring 202 move in opposite directions, so that the two mirror-distributed reeds 203 between the two are bent, and the storage soft cloth 8 is squeezed to deform the storage soft cloth 8, and this is repeated until the two mirror-distributed reeds 203 are in contact with each other across the storage soft cloth 8. The first air injection device outside is then closed, and the thrombus prosthesis in the storage soft cloth 8 is sealed at this time to reduce the probability of the thrombus entering the blood vessel in advance, so as to avoid the thrombus prosthesis in the storage soft cloth 8 entering the blood vessel in advance when the device moves along the blood vessel, resulting in failure in the delivery of the thrombus prosthesis.

[0027] After the thrombus prosthesis is placed in the storage soft cloth 8 and blocked, the device is then punctured into the animal's blood vessel, and then the device is pushed along the blood vessel through the microcatheter until the device moves to the position where the thrombus prosthesis needs to be injected and stops moving. Then the staff turns on the first external gas injection device to draw back the gas in the gas injection ring 204, and then closes the first gas injection device. At this time, the driving column 206 slides inward along the gas injection ring 204 to reset, and the driving column 206 drives the first rotating ring 201 to move downward for 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, the 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, so that the mirror-distributed reed 203 between the two separates and resets to the initial state, thereby releasing the blockage of the thrombus prosthesis in the storage soft cloth 8.

[0028] When the blockage of the thrombus prosthesis in the storage soft cloth 8 is released, the staff pulls the sliding ring 2 through the mirror-distributed guide wire 5 to make the sliding ring 2 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. At this time, the transition ring 3 pulls the storage soft cloth 8, so that the storage soft cloth 8 drives the sliding plate 7 to slide along the fixed frame 6. At this time, the mirror-distributed second elastic element 9 is compressed, and the storage soft cloth 8 drives the internal thrombus prosthesis to move outward synchronously, so that the thrombus prosthesis gradually enters the blood vessel, and this continues until the thrombus prosthesis completely enters the blood vessel. At this time, the thrombus prosthesis delivery is completed.

[0029] When the thrombus prosthesis is injected, the staff releases the pulling force on the guide wire 5, then repositions the device along the blood vessel and takes it out, the first elastic element 4 is reset to drive the transition ring 3 to reset, and the second elastic element 9 is reset and drives the sliding plate 7 to reset synchronously, and the sliding plate 7 drives the transition ring 3, the sliding ring 2 and the first elastic element 4 to reset to the initial state through the storage soft cloth 8, and then the staff cleans the remaining thrombus prosthesis inside the storage soft cloth 8, and repeats the above steps when the thrombus prosthesis needs to be delivered to the animal again.

[0030] In this embodiment, the first swivel 201 and the second swivel 202 are both rotatably connected to the catheter head 1 . In the following embodiments, the first swivel 201 and the second swivel 202 are both rotatably and slidably connected to the catheter head 1 .

[0031] Embodiment 2: Based on embodiment 1, Figure 4 and Figure 5As shown, it also includes a rotating assembly for driving the gas injection ring 204 to rotate. The rotating assembly is arranged inside the catheter head 1. The rotating assembly includes a connecting cylinder 301. The connecting cylinder 301 is fixedly connected to the gas injection ring 204. A slide groove 302 is arranged inside the connecting cylinder 301. The slide groove 302 is a spiral groove, and the spiral angle of the slide groove 302 is ≥360°, which is used to make the rotation angle of the gas injection ring 204 ≥360°, so that the gas injection ring 204 drives the first rotating ring 201 to rotate by an angle of ≥360° through the driving column 206, so that the two reeds 203 are rotated after contacting The spring 203 squeezes and breaks the thrombus prosthesis through the storage soft cloth 8, so that the staff can independently adjust the volume of the thrombus prosthesis delivered into the blood vessel. The fixed frame 6 is slidably connected to the pushing frame 303. The upper side of the pushing frame 303 is fixedly connected to a clamping block 304. The clamping 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 clamping block 304 slides with the slide groove 302 and drives the gas injection ring 204 to rotate. A driving component for driving the pushing frame 303 to move is arranged inside the catheter head 1.

[0032] like Figure 4 and Figure 5 As shown, the driving assembly includes a gas injection cylinder 305, which is fixedly connected to the lower part of the catheter head 1, and a second gas injection pipe 306 is fixedly connected to the lower side of the gas injection cylinder 305, and the second gas injection pipe 306 is connected to an external second gas injection device. The inside of the gas injection cylinder 305 is sealed and slidably connected with a piston shaft 307, and the gas injection cylinder 305 and the piston shaft 307 cooperate to form a closed cavity, and the second gas injection pipe 306 is connected to the closed cavity. By injecting gas into the closed cavity, the gas pushes the push frame 303 to move through the piston shaft 307, and the piston shaft 307 is fixedly connected to the push frame 303.

[0033] When injecting the thrombus prosthesis, different blood vessels are injected with different contents, which facilitates the control of the content of the 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. At this time, the staff then opens the first external gas injection device again, and injects gas into the gas injection ring 204 again. The above steps are repeated until the two reeds 203 are bent and contact each other, and then the gas injection device is closed again.

[0034] When the two reeds 203 come into contact, the storage soft cloth 8 is squeezed to deform the internal thrombus prosthesis, and then the staff turns on the second gas injection device to inject gas into the second gas injection tube 306. At this time, the gas enters the closed cavity formed by the gas injection cylinder 305 and the piston shaft 307 along the second gas injection tube 306, and then the gas pushes the piston shaft 307 to slide upward, and the piston shaft 307 drives the pushing frame 303 to slide synchronously, and the pushing frame 303 drives the block 304 thereon to move synchronously. At this time, the block 304 slides along the slide groove 302, so that the block 304 drives the connecting tube 301 to rotate, and the connecting tube 301 drives the gas injection ring 204 to rotate synchronously, and the gas injection ring 204 drives the first rotating ring 201 to rotate synchronously through the driving column 206, and the first rotating ring 201 drives the two reeds 203 distributed in a mirror image. The piston shaft 307 drives the block 304 to return to its initial state through the push frame 303, and the connecting tube 301 drives the gas injection ring 204 to rotate in the opposite direction. The gas injection ring 204 drives the two mirror-distributed reeds 203 to rotate in the opposite direction synchronously through the driving column 206 and the first rotating ring 201, and then injects gas into the closed cavity again. This cycle is repeated three to five times, and the two mirror-distributed reeds 203 rotate alternately forward and reversely to squeeze and cut the thrombus prosthesis located in the storage soft cloth 8, and cut the thrombus prosthesis circumferentially. Under the action of the blood in the blood vessel, the cut thrombus prosthesis enters the blood vessel.

[0035] When the thrombus prosthesis enters the blood vessel, the staff stops the second gas injection device, then takes the device out along the blood vessel, and then opens the first gas injection device to extract the gas in the gas injection ring 204, and repeats the above steps to separate the two reeds 203 and restore them to the initial state. At this time, the blockage of the thrombus prosthesis in the storage soft cloth 8 is released, and the remaining thrombus prosthesis in the storage soft cloth 8 is cleaned, and the above steps are repeated when the thrombus prosthesis needs to be injected into the blood vessel again.

[0036] When the transition ring 3 pulls the storage soft cloth 8 to transport the thrombus prosthesis into the blood vessel, the storage soft cloth 8 is in a taut state. When the two mirror-distributed reeds 203 squeeze and cut the thrombus prosthesis, the reed 203 will drive the storage soft cloth 8 to deform toward the middle. 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 fixing 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 to reduce the wear of the reed 203 on the storage soft cloth 8, and at the same time, the storage soft cloth 8 is kept in a taut state to ensure that the cut thrombus prosthesis can enter the blood vessel.

[0037] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A thrombus prosthesis in vivo delivery device, characterized in that: The invention comprises a catheter head (1), wherein the outside of the catheter head (1) is slidably connected to a sliding ring (2), the outside of the catheter head (1) is slidably connected to a transition ring (3), a first elastic element (4) is arranged between the sliding ring (2) and the transition ring (3), a side of the sliding ring (2) away from the transition ring (3) is fixedly connected to a guide wire (5) distributed in a mirror image, the inside of the catheter head (1) is fixedly connected to a fixing frame (6), the fixing frame (6) is slidably connected to a sliding plate (7), a storage soft cloth (8) is fixedly connected between the sliding plate (7) and the transition ring (3), a second elastic element (9) distributed in a mirror image is arranged between the sliding plate (7) and the fixing frame (6), and a cutting component for cutting off a thrombus prosthesis is arranged inside the catheter head (1).

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

3. The thrombus prosthesis in vivo delivery device according to claim 1, characterized in that: The cutting assembly comprises a first rotating ring (201), the first rotating ring (201) being arranged inside the catheter head (1), a second rotating ring (202) being arranged inside the catheter head (1), a spring sheet (203) being fixedly connected between the first rotating ring (201) and the second rotating ring (202), and a pushing assembly for pushing the first rotating ring (201) being arranged inside the catheter head (1).

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

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

6. The in vivo delivery device for thrombus prosthesis according to claim 3, characterized in that: The pushing assembly comprises an air injection ring (204), the air injection ring (204) being rotatably connected to the interior of the catheter head (1), the side of the air injection ring (204) away from the first rotating ring (201) being fixedly connected and connected to a first air injection pipe (205), the side of the air injection ring (204) close to the first rotating ring (201) being sealingly and slidably connected to a driving column (206), the driving column (206) being fixedly connected to the first rotating ring (201), and the air injection ring (204) being provided with a sliding assembly for synchronous sliding of the first rotating ring (201) and the second rotating ring (202).

7. The in vivo delivery device for thrombus prosthesis according to claim 6, characterized in that: The sliding assembly comprises a first rack (207), the first rack (207) being fixedly connected to a side of the second rotating ring (202) close to the first rotating ring (201), the first rack (207) passing through the first rotating ring (201), and the two are slidably connected to each other, a second rack (208) being fixedly connected to a side of the first rotating ring (201) close to the gas injection ring (204), the gas injection ring (204) being rotatably connected to a gear (209), the first rack (207) and the second rack (208) both being meshed with the gear (209), and a rotating assembly for driving the gas injection ring (204) to rotate is provided inside the catheter head (1).

8. The in vivo delivery device for thrombus prosthesis according to claim 7, characterized in that: The invention also comprises a rotating assembly for driving the gas injection ring (204) to rotate, wherein the rotating assembly is arranged inside the catheter head (1), and comprises a connecting cylinder (301), wherein the connecting cylinder (301) is fixedly connected to the gas injection ring (204), wherein a slide groove (302) is arranged inside the connecting cylinder (301), wherein the fixed frame (6) is slidably connected to a driving frame (303), wherein a clamping block (304) is fixedly connected to a side of the driving frame (303) close to the connecting cylinder (301), wherein the clamping block (304) is slidably connected to the slide groove (302), wherein the first rotating ring (201) and the second rotating ring (202) are both rotatably and slidably connected to the catheter head (1), and wherein a driving assembly for driving the driving frame (303) to move is arranged inside the catheter head (1).

9. The in vivo delivery device for thrombus prosthesis according to claim 8, characterized in that: The slide groove (302) is a spiral groove, and the spiral angle of the slide groove (302) is ≥360°.

10. The in vivo delivery device for thrombus prosthesis according to claim 8, characterized in that: The driving assembly comprises an air injection cylinder (305), the air injection cylinder (305) is fixedly connected to the inside of the catheter head (1), the air injection cylinder (305) is fixedly connected to a second air injection pipe (306), the air injection cylinder (305) is sealed and slidably connected to a piston shaft (307) inside, the air injection cylinder (305) and the piston shaft (307) cooperate to form a closed cavity, the second air injection pipe (306) is connected to the closed cavity, and the piston shaft (307) is fixedly connected to the pushing frame (303).

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