Peripheral vascular interventional thrombectomy catheter with distal embolic protection structure

Abstract

The application discloses a peripheral blood vessel intervention thrombus-removing catheter with a distal embolism protection structure and relates to the technical field of blood vessel thrombus-removing catheters.The peripheral blood vessel intervention thrombus-removing catheter with the distal embolism protection structure comprises a catheter body, one end of the catheter body is provided with a thrombus-removing assembly, the surface of the catheter body is provided with a thrombus-removing assembly, the inside of the catheter body is provided with a transmission assembly, the thrombus-removing assembly comprises a protection pipe network fixedly installed on one side of the catheter body.The transmission assembly is arranged, in the process of use, the rotation of a lead screw can drive one end of the lead screw to move the one side of the filter screen plate to the inside of the protection pipe network, so that the protection pipe network is expanded, and the air bag piece can be inflated, the catheter is placed into in the process of use, the preparation time of catheter operation is reduced, the catheter is convenient to operate, the thrombus-removing and protection operation of the catheter are improved, and the use convenience of the catheter is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vascular thrombectomy catheter, in particular to a peripheral vascular interventional thrombectomy catheter with a distal embolism protection structure. BACKGROUND

[0002] The thrombectomy catheter is a medical device used for treating intravascular thrombus. The thrombectomy catheter can accurately enter the inside of the blood vessel and remove or grasp the thrombus out of the blood vessel due to its flexibility and controllability. It has a small outer diameter and a soft material, which can adapt to different shapes and curvatures of blood vessels. It also has good visibility, which can observe the situation inside the blood vessel in real time through optical fibers or ultrasonic waves in the catheter, thereby improving the accuracy and safety of the operation. The thrombectomy catheter is an important interventional medical device for treating intravascular thrombus diseases, and is widely used in neurosurgery and cardiovascular surgery.

[0003] However, the peripheral vascular interventional thrombectomy catheter on the market needs to be placed inside the catheter first, then the embolism protection structure of the catheter is opened, and then the thrombectomy operation is performed. In this operation process, the catheter cannot be placed in place while the embolism protection structure and the thrombectomy structure are expanded at the same time, so that the operation process of the catheter is more complicated, the preparation time of the catheter is increased, the operation is not convenient, and the subsequent thrombectomy and protection operation is affected. SUMMARY

[0004] The present application aims to provide a peripheral vascular interventional thrombectomy catheter with a distal embolism protection structure to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a peripheral vascular interventional thrombectomy catheter with a distal embolism protection structure, comprising a catheter body, one end of the catheter body is provided with an embolism protection assembly, the surface of the catheter body is provided with a thrombectomy assembly, and the inside of the catheter body is provided with a transmission assembly.

[0006] The surface of the catheter body is sleeved with an anti-skid sleeve, the surface of the anti-skid sleeve is fixedly installed with an anti-skid strip, the surface of the anti-skid strip is provided with anti-skid lines, the anti-skid strip is made of silica gel, and the inner wall of the anti-skid sleeve is fixedly connected with the surface of the catheter body.

[0007] The anti-skid sleeve is provided, the catheter body can be held during use, and the anti-skid strip is provided, so that the anti-skid effect is achieved during holding, and the use convenience of the catheter is improved.

[0008] The embolism protection assembly comprises a protective pipe network fixedly installed on one side of the catheter body, a filter screen plate fixedly installed on one side of the protective pipe network, and a reinforcing ring fixedly installed in the middle of the protective pipe network, wherein the reinforcing ring is made of elastic guide wire, the diameter of the filter screen plate is 1.5 times the diameter of the protective pipe network, and the reinforcing ring can support the middle of the protective pipe network during use, thereby avoiding uneven stress on the protective pipe network and facilitating the formation of a shuttle shape after the protective pipe network is stressed, so as to facilitate subsequent thrombus removal operation.

[0009] The embolism protection assembly can protect the inside of the blood vessel during use, avoid impurities and cleaned fragments from entering the inside of the blood vessel during cleaning, maintain the comprehensiveness of cleaning, and facilitate subsequent thrombus removal operation.

[0010] The thrombus removal assembly comprises a balloon piece fixedly installed on the surface of the catheter body, a lumen is formed in the inside of the catheter body, a balloon ring is fixedly installed in the inside of the lumen, a connecting pipe is communicated with one end of the balloon ring, one end of the connecting pipe penetrates through the catheter body and extends to the outside of the catheter body and is communicated with one side of the balloon piece, an arc-shaped piece is fixedly installed on one side of the balloon piece, the surface of the arc-shaped piece is smooth, the balloon piece is made of silicone, the number of the balloon pieces is seven, the seven balloon pieces are arranged in a circle on the surface of the catheter body, the peripheral size of the seven balloon pieces when inflated is the same as the diameter of the filter screen plate, the filter screen plate is arranged to facilitate the protection and filtration of thrombus fragments during use, thereby improving the convenience of use of the catheter.

[0011] The arc-shaped piece is arranged to fit the inner wall of the blood vessel during use, facilitate the support of the inner wall of the blood vessel during use, prevent damage to the blood vessel during use, and facilitate subsequent thrombus removal operation, thereby improving the convenience of use of the catheter.

[0012] The thrombus removal assembly is arranged to facilitate the formation of a sealed space between the embolism protection assembly during use, avoid the entry of some fragments generated during thrombus removal into one side of the protective pipe network, improve the cleanliness of thrombus removal, and improve the success rate of thrombus removal.

[0013] The transmission assembly comprises a partition plate fixedly installed in the inside of the catheter body, a lead screw inserted in the partition plate, one end of the lead screw rotatably connected to one side of the filter screen plate through a bearing, and a cannula arranged in the lumen of the catheter body.

[0014] The transmission assembly is arranged, in use, can be through the rotation of the screw rod, in the process of screw rod rotation can make the one end of the screw rod drive the one side of the filter screen plate to the inside of the protective pipe net moving, thereby opening the protective pipe net, at the same time, the air bag piece can be inflated, in use, the catheter is placed into, without complicated operation, which reduces the preparation time of catheter operation, makes its operation convenient, improves the catheter taking and protection operation, improves the use convenience of the catheter.

[0015] Preferably, one side of the catheter body is fixedly installed with a protective ring, the inner wall of the protective ring is in sliding connection with the surface of the cannula, and the cannula is matched with the protective ring.

[0016] The protective ring is arranged, in use, the subsequent hand operation of the catheter is facilitated, so that the subsequent adjustment of the catheter is facilitated, thereby facilitating the subsequent taking operation, and the use convenience of the catheter is improved.

[0017] Preferably, one end of the screw rod outside the catheter body is fixedly installed with a rotating block, one side of the rotating block is fixedly installed with a rotating plate, the surface of the rotating plate is provided with anti-skid lines, one end of the cannula is arranged in a plugging shape, one end of the cannula is provided with a wire hole for the screw rod to pass through, and the inner wall of the wire hole is in threaded connection with the surface of the screw rod.

[0018] The rotating block and the rotating plate are arranged, in use, the rotation of the screw rod is facilitated, so that the corresponding threaded connection components are moved when the screw rod rotates, and the hand operation of the medical staff is facilitated, and the operation convenience of the catheter is improved.

[0019] Preferably, one end of the cannula is fixedly installed with a pressing ring, one side of the pressing ring is in abutment with one side of the air bag ring, and the surface and the inner ring of the pressing ring are in sliding connection with the inner wall of the lumen.

[0020] The pressing ring is arranged, in use, one side of the air bag ring can be extruded in the moving process of the cannula, so that the gas in the air bag ring is extruded into the inside of the connecting pipe, thereby facilitating the next step, and the operation convenience of the catheter is improved.

[0021] Preferably, the partition plate is provided with a wire hole for the screw rod to pass through, and the screw rod is in threaded connection with the wire hole.

[0022] The wire hole and the partition plate are in threaded connection, in the rotation of the screw rod, one end of the screw rod is moved to drive one side of the filter screen plate to move, thereby facilitating the subsequent operation.

[0023] Preferably, the screw rod is provided with a first threaded groove and a second threaded groove, the first threaded groove is in threaded connection with the wire hole on the cannula, and the second threaded groove is in threaded connection with the wire hole on the partition plate.

[0024] By setting the first and second threaded grooves in opposite directions, the corresponding components can be moved during the rotation of the screw, thereby enabling simultaneous protection and bolt removal operations while the screw is rotating, thus improving the ease of use of the conduit.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] (1) This peripheral vascular interventional thrombectomy catheter with distal embolization protection structure, through the transmission component, can rotate the lead screw during use. During the rotation of the lead screw, one end of the lead screw can drive one side of the filter plate to move into the protective network, thereby opening the protective network. At the same time, the balloon can be inflated. After the catheter is inserted during use, there is no need to perform cumbersome operations. It reduces the preparation time for catheter operation, makes it easy to operate, improves the thrombectomy and protection operation of the catheter, and improves the ease of use of the catheter.

[0027] (2) This peripheral vascular interventional thrombectomy catheter with distal embolization protection structure protects the inside of the blood vessel during use by setting embolization protection components, preventing impurities and debris from entering the inside of the blood vessel during the cleaning process, thus maintaining the thoroughness of the cleaning and facilitating subsequent thrombectomy.

[0028] (3) This peripheral vascular interventional thrombectomy catheter with distal embolization protection structure can easily form a sealed space with the embolization protection component during use. When performing thrombectomy, it can prevent some fragments generated during thrombectomy from entering one side of the protective pipeline, thus improving the cleanliness of thrombectomy and increasing the success rate of thrombectomy. Attached Figure Description

[0029] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0030] Figure 2 is a schematic diagram of the first perspective three-dimensional cross-sectional structure of the present invention;

[0031] Figure 3 is a schematic diagram of the second perspective stereoscopic cross-sectional structure of the present invention;

[0032] Figure 4 is a schematic diagram of the third-view stereoscopic cross-sectional structure of the present invention;

[0033] Figure 5 is an enlarged schematic diagram of the structure at point A in Figure 1 of this invention;

[0034] Figure 6 shows the present invention. Figure 2 Enlarged schematic diagram of the structure at point B;

[0035] Figure 7 is an enlarged schematic diagram of the structure at point C in Figure 3 of the present invention;

[0036] Figure 8 is a schematic view of the structure of the present application Figure 4 in D.

[0037] In the figure: 1, catheter body; 2, embolic protection assembly; 200, protective tube network; 201, filter screen; 202, reinforcing ring; 3, thrombectomy assembly; 300, balloon piece; 301, balloon ring; 302, connecting tube; 303, arc piece; 4, transmission assembly; 400, partition; 401, screw rod; 402, cannula; 403, rotating block; 404, rotating plate; 405, compression ring; 406, first threaded groove; 407, second threaded groove; 5, anti-skid sleeve; 6, anti-skid bar; 7, protective ring. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only 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 those skilled in the art without creative labor fall within the scope of protection of the present application.

[0039] Please refer to Figure 1- Figure 8 The present application provides a technical solution: a peripheral vascular interventional thrombectomy catheter with a distal embolic protection structure, comprising a catheter body 1, one end of the catheter body 1 is provided with an embolic protection assembly 2, the surface of the catheter body 1 is provided with a thrombectomy assembly 3, and the inside of the catheter body 1 is provided with a transmission assembly 4.

[0040] The embolic protection assembly 2 comprises a protective tube network 200 fixedly installed on one side of the catheter body 1, and a filter screen 201 fixedly installed on one side of the protective tube network 200.

[0041] The embolic protection assembly 2 is provided to protect the inside of the blood vessel during use, so as to avoid impurities and debris after cleaning from entering the inside of the blood vessel, thereby maintaining the comprehensiveness of cleaning and facilitating subsequent thrombectomy operation.

[0042] The thrombectomy assembly 3 comprises a balloon piece 300 fixedly installed on the surface of the catheter body 1, a lumen is formed in the inside of the catheter body 1, a balloon ring 301 is fixedly installed in the inside of the lumen, a connecting tube 302 is communicated at one end of the balloon ring 301, and one end of the connecting tube 302 penetrates through the catheter body 1 and extends to the outside of the catheter body 1 and is communicated with one side of the balloon piece 300.

[0043] The set plug taking assembly 3 forms a closed space between the embolism protection assembly 2 during use, and can avoid part of the fragments generated during plug taking from entering one side of the protection pipe network 200, thereby improving the cleanliness of plug taking and the success rate of plug taking.

[0044] The transmission assembly 4 includes a partition plate 400 fixedly installed inside the catheter body 1, a lead screw 401 inserted on the partition plate 400, one end of the lead screw 401 rotatably connected to one side of the filter screen plate 201 through a bearing, and a cannula 402 arranged in a lumen on the catheter body 1.

[0045] The transmission assembly 4 can move one end of the lead screw 401 and one side of the filter screen plate 201 towards the inside of the protection pipe network 200 during rotation of the lead screw 401, thereby expanding the protection pipe network 200 and inflating the air bag piece 300, so that the catheter can be placed without complicated operation, the preparation time of the catheter operation is reduced, the operation is convenient, the plug taking and protection operation of the catheter are improved, and the use convenience of the catheter is improved.

[0046] Referring to FIG. 5, one side of the air bag piece 300 is fixedly installed with an arc-shaped piece 303, the surface of the arc-shaped piece 303 is smooth, the arc-shaped piece 303 is made of silica gel, the arc-shaped piece 303 is set to fit the inner wall of the blood vessel during use, and also facilitates the support operation on the inner wall of the blood vessel during use, prevents damage to the blood vessel during use, and facilitates subsequent plug taking operation, thereby improving the use convenience of the catheter.

[0047] Referring to FIG. 5, the middle part of the protection pipe network 200 is fixedly installed with a reinforcing ring 202, the reinforcing ring 202 is made of elastic guide wire, the diameter of the filter screen plate 201 is one and a half times the diameter of the protection pipe network 200, and the reinforcing ring 202 is set to support the middle part of the protection pipe network 200 during use, thereby avoiding uneven stress on the protection pipe network 200, and facilitating the formation of a shuttle shape after the protection pipe network 200 is stressed, thereby facilitating subsequent plug taking operation.

[0048] Please refer to Figure 1, the surface of the catheter body 1 is sleeved with an anti-skid sleeve 5, the surface of the anti-skid sleeve 5 is fixedly provided with an anti-skid strip 6, the surface of the anti-skid strip 6 is provided with anti-skid lines, the anti-skid strip 6 is made of silica gel, the inner wall of the anti-skid sleeve 5 is fixedly connected with the surface of the catheter body 1, the anti-skid sleeve 5 is arranged, and the catheter body 1 can be held during use, and the anti-skid strip 6 is arranged, so that the anti-skid effect is achieved during holding, and the use convenience of the catheter is improved.

[0049] Please refer to Figure 1, the catheter body 1 is fixedly provided with a protective ring 7 on one side, the inner wall of the protective ring 7 is slidably connected with the surface of the cannula 402, the cannula 402 is adapted to the protective ring 7, and the protective ring 7 is arranged, so that the subsequent hand-held operation of the catheter during use is facilitated, and thus the subsequent adjustment of the catheter is facilitated, so that the subsequent bolt taking operation is facilitated, and the use convenience of the catheter is improved.

[0050] Please refer to Figure 2 , the end of the lead screw 401 located outside the catheter body 1 is fixedly provided with a rotating block 403, one side of the rotating block 403 is fixedly provided with a rotating plate 404, the surface of the rotating plate 404 is provided with anti-skid lines, one end of the cannula 402 is arranged in a plugging manner, one end of the cannula 402 is provided with a wire hole for the lead screw 401 to pass through, the inner wall of the wire hole is threadedly connected with the surface of the lead screw 401, the rotating block 403 and the rotating plate 404 are arranged, so that the rotation of the lead screw 401 is facilitated during use, so that the corresponding screw-connected components are driven to move when the lead screw 401 rotates, and the hand-held operation of the medical staff is also facilitated, and the operation convenience of the catheter is improved.

[0051] Please refer to Figure 6 , the end of the cannula 402 is fixedly provided with a pressing ring 405, one side of the pressing ring 405 is attached to one side of the air bag ring 301, the surface and the inner ring of the pressing ring 405 are slidably connected with the inner wall of the lumen, and the pressing ring 405 is arranged, so that one side of the air bag ring 301 can be extruded by the cannula 402 during movement, so that the gas in the air bag ring 301 can be extruded into the inside of the connecting pipe 302, and the next step is facilitated, and the operation convenience of the catheter is improved.

[0052] Please refer to Figure 6 , the partition plate 400 is provided with a wire hole for the lead screw 401 to pass through, and the lead screw 401 is threadedly connected with the wire hole, the wire hole and the partition plate 400 are threadedly connected, and when the lead screw 401 rotates, one end of the lead screw 401 moves to drive one side of the filter screen plate 201 to move, so that the subsequent operation is facilitated.

[0053] Please refer to Figure 7, the screw rod 401 is provided with the first screw groove 406 and the second screw groove 407, the first screw groove 406 is threadedly connected with the pinhole on the cannula 402, the second screw groove 407 is threadedly connected with the pinhole on the partition plate 400, the first screw groove 406 and the second screw groove 407 are oppositely arranged, thus in the process of rotating the screw rod 401, the corresponding components can be driven to move, so that the protection and the taking out of the plug are simultaneously realized when the screw rod 401 rotates, and the use convenience of the catheter is improved.

[0054] Please refer to Figure 1, the number of the air bag pieces 300 is seven, the seven air bag pieces 300 are circumferentially arranged on the surface of the catheter body 1, and the peripheral size of the seven air bag pieces 300 when inflated is the same as the diameter size of the filter screen plate 201, the filter screen plate 201 is arranged, which facilitates the protection and the filtering operation of the thrombus fragments in the process of use, so that the use convenience of the catheter is improved.

[0055] Working principle: in use, the catheter is placed in the blood vessel where the thrombus is to be taken out, when the catheter body 1 is located at the thrombus taking out position, the filter screen plate 201 passes through the thrombus taking out position, then the screw rod 401 is rotated, the screw rod 401 is threadedly connected with the partition plate 400 in the process of rotation, thus in the process of rotating the screw rod 401, one end of the screw rod 401 can drive the central part of the filter screen plate 201 to move towards the inside of the protection pipe screen 200, at this time the filter screen plate 201 will extrude one side of the protection pipe screen 200, so that the middle part of the protection pipe screen 200 is expanded, at this time the protection pipe screen 200 is in the shape of a shuttle;

[0056] In the process of rotating the screw rod 401, the thumb is used to extrude one side of the protection ring 7, so as to avoid the cannula 402 from rotating in the process of rotating the screw rod 401, at this time the screw rod 401 moves the cannula 402 towards the inside of the lumen under the action of the first screw groove 406, at the same time the compression ring 405 at one end of the cannula 402 extrudes one side of the air bag ring 301, the gas in the air bag ring 301 enters the inside of the air bag piece 300 through the connecting pipe 302, at this time the air bag piece 300 is inflated, so that the surface of the air bag piece 300 is attached to the inner wall surface of the blood vessel;

[0057] At this time, the taking out of the plug can be realized by the pipe or the catheter body 1, in this process, the filter screen plate 201 can protect one side of the thrombus taking out position, so as to avoid the leakage.

[0058] The standard parts used in the present application can be purchased from the market, and the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail here. The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0059] The above describes the present application and its embodiments, which is not limited, and the drawings only show one of the embodiments of the present application, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired, without departing from the purpose of the present application, without creative design, similar structure and embodiments of the technical solution, which should belong to the protection scope of the present application.

Claims

1. A peripheral vascular interventional thrombectomy catheter with a distal embolic protection structure, comprising a catheter body (1), characterized in that: One end of the catheter body (1) is provided with an embolism protection assembly (2), the surface of the catheter body (1) is provided with a taking embolism assembly (3), and the inside of the catheter body (1) is provided with a transmission assembly (4); The surface of the catheter body (1) is sleeved with an antiskid sleeve (5), the surface of the antiskid sleeve (5) is fixedly installed with an antiskid strip (6), the surface of the antiskid strip (6) is provided with antiskid lines, the antiskid strip (6) is made of silica gel, and the inner wall of the antiskid sleeve (5) is fixedly connected with the surface of the catheter body (1); The embolism protection assembly (2) comprises a protection pipe network (200) fixedly installed on one side of the catheter body (1), a filter screen plate (201) fixedly installed on one side of the protection pipe network (200), and a reinforcing ring (202) fixedly installed in the middle of the protection pipe network (200), wherein the reinforcing ring (202) is made of elastic guide wire, and the diameter of the filter screen plate (201) is one and a half times the diameter of the protection pipe network (200). The taking embolism assembly (3) comprises a gas bag piece (300) fixedly installed on the surface of the catheter body (1), a lumen formed in the catheter body (1), a gas bag ring (301) fixedly installed in the lumen, a connecting pipe (302) communicated with one end of the gas bag ring (301), and one end of the connecting pipe (302) penetrating through the catheter body (1) and extending to the outside of the catheter body (1) and being communicated with one side of the gas bag piece (300), wherein the number of the gas bag piece (300) is seven, the seven gas bag pieces (300) are arranged in a circle on the surface of the catheter body (1), the peripheral size of the seven gas bag pieces (300) when inflated is the same as the diameter of the filter screen plate (201), one side of the gas bag piece (300) is fixedly installed with an arc-shaped piece (303), the surface of the arc-shaped piece (303) is smooth, and the arc-shaped piece (303) is made of silica gel. The transmission assembly (4) comprises a partition plate (400) fixedly installed in the catheter body (1), a lead screw (401) inserted in the partition plate (400), and a pipe (402) arranged in the lumen of the catheter body (1).

2. The peripheral vascular interventional thrombectomy catheter with a distal embolic protection structure of claim 1, wherein: One side of the catheter body (1) is fixedly installed with a protection ring (7), the inner wall of the protection ring (7) is slidably connected with the surface of the pipe (402), and the pipe (402) is matched with the protection ring (7).

3. The peripheral vascular interventional thrombectomy catheter with a distal embolic protection structure of claim 1, wherein: One end of the lead screw (401) located outside the catheter body (1) is fixedly installed with a rotating block (403), one side of the rotating block (403) is fixedly installed with a rotating plate (404), the surface of the rotating plate (404) is provided with antiskid lines, one end of the pipe (402) is provided in a plugging shape, one end of the pipe (402) is provided with a wire hole for the lead screw (401) to pass through, and the inner wall of the wire hole is threadedly connected with the surface of the lead screw (401).

4. The peripheral vascular interventional thrombectomy catheter with a distal embolic protection structure of claim 1, wherein: One end of the pipe (402) is fixedly installed with a pressing ring (405), one side of the pressing ring (405) is attached to one side of the gas bag ring (301), and the surface and the inner ring of the pressing ring (405) are slidably connected with the inner wall of the lumen, respectively.

5. The peripheral vascular interventional thrombectomy catheter with a distal embolic protection structure of claim 1, wherein: The partition plate (400) is provided with a wire hole for the wire rod (401) to pass through, and the wire rod (401) is in threaded connection with the wire hole.

6. The peripheral vascular interventional thrombectomy catheter with a distal embolic protection structure of claim 1, wherein: The wire rod (401) is provided with a first threaded groove (406) and a second threaded groove (407), the first threaded groove (406) is in threaded connection with the wire hole on the insertion tube (402), and the second threaded groove (407) is in threaded connection with the wire hole on the partition plate (400).

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