Thrombus aspiration catheter and thrombus treatment device

Abstract

The utility model is suitable for the technical field of medical equipment, and provides a thrombus aspiration catheter and a thrombus treatment device. The thrombus aspiration catheter comprises a first catheter body and a second catheter body, two connectors are arranged at the first end of the first catheter body, and one end of the second catheter body is connected with any connector of the first catheter body. The second end of the first catheter is used for being connected to a negative pressure device. The first guide pipe and the second guide pipe are connected through threads. The thrombus suction catheter further comprises a sealing cover used for sealing any connector of the first catheter. A pressure gauge is further arranged on the first guide pipe and used for measuring the negative pressure in the first guide pipe. The two connectors are arranged on the first catheter, so that when the second catheter is prevented from being blocked and replaced, the second catheter can be quickly replaced and used, and the thrombus suction efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a thrombus aspiration catheter and a thrombus treatment device. Background Art

[0002] Thrombi are small pieces of blood formed on the surface of the lining of the cardiovascular system. In variable fluid dependent patterns, thrombi are composed of insoluble fibrin, deposited platelets, accumulated leukocytes and trapped erythrocytes.

[0003] A suction catheter is required during the suction process of thrombus, but the suction catheter may be blocked during the suction process. If blocked, the entire suction catheter needs to be replaced, which is troublesome to operate. In order to solve this technical problem, a thrombus suction catheter and a thrombus treatment device are proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a thrombus aspiration catheter and a thrombus treatment device to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above object, the utility model provides the following technical solution:

[0006] A thrombus aspiration catheter comprises a first catheter and a second catheter, wherein the first end of the first catheter is provided with two interfaces, and one end of the second catheter is connected to any interface of the first catheter.

[0007] As a further solution of the utility model: the second end of the first conduit is used to be connected to a negative pressure device.

[0008] As a further solution of the present invention: the first conduit and the second conduit are connected via threads.

[0009] As a further solution of the utility model: the thrombus aspiration catheter also includes a sealing cover for sealing any interface of the first catheter.

[0010] As a further solution of the present invention: a pressure gauge is also provided on the first conduit, and the pressure gauge is used to measure the negative pressure inside the first conduit.

[0011] The utility model provides another technical solution as follows:

[0012] A thrombus treatment device comprises: a thrombus collecting component, an inner catheter, a thrombus crushing component and a thrombus suction catheter.

[0013] As a further solution of the utility model: the thrombus collecting component includes a push-pull guide wire and a collecting net, the collecting net is sleeved on the push-pull guide wire, and the tightening end of the collecting net is fixedly installed on the push-pull guide wire.

[0014] As a further solution of the utility model: the inner catheter is sleeved on the outside of the thrombus collection component, and the collection net is accommodated inside the inner catheter; the collection net has two states: a contracted state accommodated inside the inner catheter and an open state withdrawn from the inner catheter; and in the open state, the collection net is an open umbrella-shaped structure, and the tightening end is arranged close to the end of the push-pull guide wire.

[0015] Compared with the prior art, the utility model has the following beneficial effects: by providing two interfaces on the first catheter, the second catheter is prevented from being blocked, and when the second catheter is replaced, it can be quickly replaced and used, and the plug suction efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a thrombus aspiration catheter in an embodiment of the utility model.

[0017] Figure 2 It is a schematic structural diagram of a thrombus collecting component in a thrombus treatment device in an embodiment of the utility model.

[0018] Figure 3 The present invention is a schematic diagram of a thrombus-breaking device in an embodiment of the present invention.

[0019] Figure 4 It is a schematic structural diagram of a thrombus-breaking component in a thrombus-processing device in an embodiment of the utility model.

[0020] Figure 5 The present invention is a schematic diagram of a thrombus treatment device in an embodiment of the present invention.

[0021] In the figure: 10-thrombus collection component, 20-inner catheter, 30-outer catheter, 40-thrombus crushing component, 50-thrombus suction catheter, 101-collecting net, 102-push-pull guide wire, 401-connecting catheter, 402-thrombus crushing structure, 403-storing catheter, 501-first catheter, 502-second catheter, 503-pressure gauge. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1

[0024] See also Figure 1 , a structural diagram of a thrombus aspiration catheter provided in Example 1 of the utility model, the thrombus aspiration catheter 50, comprises a first catheter 501 and a second catheter 502, the first catheter 501 is provided with two interfaces at the first end, one end of the second catheter 502 is connected to any interface of the first catheter 501; the second end of the first catheter 501 is used to connect to a negative pressure device, and the negative pressure device is a prior art. Therefore, no further description is made here.

[0025] The utility model provides two interfaces on the first catheter 501 to prevent the second catheter 502 from being blocked. When the second catheter 502 is replaced, it can be quickly replaced and used, and the plug suction efficiency is higher.

[0026] In some embodiments, a pressure gauge 503 is further provided on the first conduit 501 . The pressure gauge 503 is used to measure the negative pressure inside the first conduit 501 . The pressure-leading end of the pressure gauge 503 is connected to the inside of the first conduit 501 .

[0027] In some embodiments, the inner diameters of the first catheter 501 and the second catheter 502 are 6-11F (ie, 2-4 mm). The total length of the first catheter 501 is 45-80 cm.

[0028] In some embodiments, the first conduit 501 is connected to the second conduit 502 by threads. The pressure gauge 503 is also installed on the first conduit 501 by threads.

[0029] In some embodiments, the thrombus aspiration catheter 50 further includes a sealing cap for sealing any interface of the first catheter 501, the sealing cap is closed on the interface, so as to seal another open interface during the thrombus aspiration process to prevent pressure release. The sealing cap can be closed on the interface by threading.

[0030] Example 2

[0031] like Figure 2-5 As shown, the embodiment of the utility model also provides a thrombus treatment device, comprising: a thrombus collection component 10, an inner catheter 20, a thrombus crushing component 40 and a thrombus suction catheter 50; the thrombus collection component 10 comprises a push-pull guide wire 102 and a collection net 101; the collection net 101 is arranged at the end of the push-pull guide wire 102;

[0032] In some embodiments, the collecting net 101 is sleeved on the push-pull guide wire 102 , and the tightening end of the collecting net 101 is fixedly mounted on the push-pull guide wire 102 .

[0033] In some embodiments, the inner catheter 20 is sleeved on the outside of the thrombus collection component 10, and the collection net 101 is received inside the inner catheter 20; the collection net 101 has two states: a contracted state received inside the inner catheter 20 and an open state withdrawn from the inner catheter 20; and in the open state, the collection net 101 is an open umbrella-shaped structure, which includes a tightening end and an opening end, and the tightening end is arranged near the end of the push-pull guide wire 102.

[0034] In some embodiments, the thrombus-breaking component 40 is used to crush the thrombus; the thrombus-breaking component 40 includes a receiving catheter 403, a connecting catheter 401 is arranged inside the receiving catheter 403, and a thrombus-breaking structure 402 is arranged at the end of the connecting catheter 401; the thrombus-breaking structure 402 is squeezed and received in the receiving catheter 403, and when the thrombus-breaking structure 402 is separated from the receiving catheter 403, it can automatically open outward; the connecting catheter 401 can be sleeved on the outside of the push-pull guide wire 102;

[0035] Specifically, the inner diameter of the receiving catheter 403 is set larger than the outer diameter of the push-pull guide wire 102 .

[0036] The thrombus aspiration catheter 50 is used to be sleeved on the push-pull guide wire 102 .

[0037] The utility model may further include an outer catheter 30, which is used to establish a channel, through which the inner catheter 20 containing the thrombus collection component 10 is conveniently inserted into the inferior vena cava.

[0038] Specifically, when in use, the guide wire is inserted into the inferior vena cava where the thrombus needs to be treated, and then the outer catheter 30 is inserted into the inferior vena cava along the guide wire to establish a channel; the inner catheter 20 with the thrombus collection component 10 is inserted into the channel established by the outer catheter 30, the thrombus collection component 10 is inserted into the inferior vena cava, and the inner catheter 20 passes through the thrombus; the outer catheter 30 is withdrawn, and then the push-pull guide wire 102 is held by hand at one end outside the body to fix the position of the collection net 101, and the inner catheter 20 is pulled back to withdraw it from the inferior vena cava; the collection net 101 withdraws from the inner catheter 20, and the collection net 101 automatically opens to wrap the thrombus, and then the push-pull guide wire 102 is pulled so that the collection net 101 is stuck at the bifurcation of the vena (iliac) vein; the connecting catheter 401 arranged inside the receiving catheter 403 is sleeved on the push-pull guide wire 102 On the guide wire 102, the receiving catheter 403 and the thrombus-breaking structure 402 are inserted into the thrombus position through the receiving catheter 403, and then the connecting catheter 401 is fixed, the receiving catheter 403 is withdrawn, the thrombus-breaking structure 402 automatically opens, and the connecting catheter 401 is pulled back and forth, the connecting catheter 401 cuts the thrombus and breaks it up, and then the connecting catheter 401 is withdrawn; then the thrombus suction catheter 50 is inserted into the thrombus position along the push-pull guide wire 102, and the negative pressure port of the thrombus suction catheter 50 away from the thrombus provides negative pressure to suck out the thrombus, and then the thrombus suction catheter 50 is withdrawn; the outer catheter 30 is inserted along the push-pull guide wire 102, and when the end of the outer catheter 30 hits the open end of the collecting net 101, the push-pull guide wire 102 is pulled down to collect the collecting net 101 into the outer catheter 30, and then the outer catheter 30 is withdrawn to complete the thrombus treatment. The utility model reduces the risk of filter blockage due to the shedding of large emboli and the risk of pulmonary embolism due to the shedding of small emboli; the collection net 101 is designed as a net bag structure, which can also take out a part of the thrombus during the withdrawal process, thereby achieving the cleaning of the thrombus.

[0039] In some embodiments, the push-pull guide wire 102 is made of an elastic metal wire, which has the elasticity to expand outward when housed in the inner catheter 20 .

[0040] In some embodiments, the inner catheter 20 , the outer catheter 30 , the receiving catheter 403 , and the thrombus aspiration catheter 50 may all be hollow plastic tubes.

[0041] In some embodiments, the open end of the collecting net 101 is contracted toward the center, so as to avoid damage to the blood vessel wall when the collecting net 101 is pulled, and to facilitate the collection of the collecting net 101 into the outer catheter 30.

[0042] like Figure 1 As shown, in some embodiments, the contraction section of the collection net 101 is provided with a pointed tip, and the pointed tip is provided for penetrating a thrombus.

[0043] like Figure 4As shown, in some embodiments, the thrombus-breaking structure 402 includes a plurality of spiral cutting wires arranged in an array in the same area outside the connecting catheter 401; two adjacent spiral cutting wires are arranged in opposite directions. Such an arrangement can effectively cut the thrombus without rotating during the pulling process, reduce damage to the thrombus, and directly pull down to cut the thrombus into small pieces. The first spiral cutting wire and the second spiral cutting wire can be metal wires. It has elasticity at one end and can be received in the receiving catheter 403.

[0044] The pin structure 402 is configured as a lantern structure.

[0045] In some embodiments, a handle may be provided at one end of the push-pull guide wire 102 away from the collecting net 101 to facilitate pulling the push-pull guide wire 102 .

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0049] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A thrombus aspiration catheter, characterized in that: It comprises a first conduit (501) and a second conduit (502), wherein the first end of the first conduit (501) is provided with two interfaces, and one end of the second conduit (502) is connected to any interface of the first conduit (501).

2. A thrombus aspiration catheter according to claim 1, characterized in that: The second end of the first conduit (501) is used to be connected to a negative pressure device.

3. The thrombus aspiration catheter according to claim 1, characterized in that: The first conduit (501) and the second conduit (502) are connected via threads.

4. The thrombus aspiration catheter according to claim 1, characterized in that: The thrombus aspiration catheter also includes a sealing cover for sealing any interface of the first catheter (501).

5. The thrombus aspiration catheter according to claim 1, characterized in that: The first conduit (501) is also provided with a pressure gauge (503), and the pressure gauge (503) is used to measure the negative pressure inside the first conduit (501).

6. A thrombus treatment device, characterized in that: include: A thrombus collecting component (10), an inner catheter (20), a thrombus crushing component (40), and a thrombus aspiration catheter as claimed in any one of claims 1 to 5.

7. A thrombus treatment device according to claim 6, characterized in that: The thrombus collecting component (10) comprises a push-pull guide wire (102) and a collecting net (101), wherein the collecting net (101) is sleeved on the push-pull guide wire (102), and the tightening end of the collecting net (101) is fixedly mounted on the push-pull guide wire (102).

8. A thrombus treatment device according to claim 7, characterized in that: The inner catheter (20) is sleeved on the outside of the thrombus collection component (10), and the collection net (101) is received inside the inner catheter (20); the collection net (101) has two states: a contracted state received inside the inner catheter (20) and an open state withdrawn from the inner catheter (20); and in the open state, the collection net (101) is an open umbrella-shaped structure, and the tightening end is arranged close to the end of the push-pull guide wire (102).

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