A multi-stage umbrella-type thrombus cleaner and cleaning method

Abstract

The present invention belongs to the technical field of medical devices, and particularly relates to a multi-stage umbrella-type thrombus cleaner and a cleaning method. It includes an injection device for injecting thrombus solvents and a thrombus cleaning device for cleaning thrombi. The injection device includes a main body, an outer hose is connected to the main body, a cavity communicating with the outer hose is provided inside the main body, a piston member for sucking and ejecting thrombus solvents is provided in the cavity, and a sliding member is also provided in the cavity. The thrombus cleaning device includes a plurality of umbrella-type collection structures. One end of the umbrella-type collection structure is connected to the outer hose, and the other end is connected to the sliding member. The relative movement between the outer hose and the sliding member realizes the expansion or closing of the umbrella-type collection structure. The present invention injects thrombus solvents through the injection device to soften the thrombi in the blood vessels, and some small particle thrombi can fall off from the blood vessel wall. After injecting the thrombus solvents and standing for a period of time, the umbrella-type collection structure is closed at the outlet end and then withdrawn to realize the removal of the thrombi in the blood vessels, thereby achieving the purpose of effectively dredging the blood vessels.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and particularly relates to a multi-stage umbrella-type thrombus cleaner and a cleaning method. Background Art

[0002] Diseases caused by vascular diseases are becoming increasingly serious, and there is a trend of getting younger. Among vascular diseases, vascular occlusion caused by thrombus is the most common. To solve various health problems caused by thrombus, generally speaking, there are currently two main types of solutions.

[0003] The first method is to inject a thrombus solvent into the blood vessel to dissolve the clumped thrombus and make the blood vessel unobstructed. This method has a slow effect and high cost, and usually requires long-term hospitalization; the second method is to use a medical device to enter the blood vessel and mechanically remove the key thrombus part. However, there are potential problems in the currently known mechanical removal solutions, mainly concentrated on the secondary damage to the blood vessel, resulting in blood vessel rupture. The mechanical cleaning structures in the existing patent designs all have obvious limitations in the blood vessel, mainly because they are extremely easy to cause secondary damage to the blood vessel, resulting in internal rupture of the blood vessel, thereby causing further harm to the body; in addition, the injection of the thrombus solvent and the thrombus cleaning generally require different instruments, the operation is complex, and improper operation is likely to miss the cleaning time. Summary of the Invention

[0004] In order to solve the problem that different instruments are required for thrombus injection and thrombus cleaning in the prior art and the operation is inconvenient, the present invention provides a multi-stage umbrella-type thrombus cleaner and a cleaning method in which thrombus injection and thrombus cleaning are integrated.

[0005] The technical solution adopted by the present invention to solve its technical problems is:

[0006] A multi-stage umbrella-type thrombus cleaner includes an injection device for injecting a thrombus solvent and a thrombus cleaning device for cleaning thrombus. The injection device includes a body, an outer hose is connected to the body, a cavity communicated with the outer hose is provided in the body, a piston member for sucking and pushing out the thrombus solvent is provided in the cavity, a sliding member is further provided in the cavity. The thrombus cleaning device includes a plurality of umbrella-type collection structures. One end of the umbrella-type collection structure is connected to the outer hose, and the other end is connected to the sliding member. The mutual movement of the outer hose and the sliding member realizes the expansion or closing of the umbrella-type collection structure.

[0007] Further, the sliding member includes a sliding barrel, the umbrella-type collection structure is connected to the sliding barrel through an inner hose, and the inner hose and the outer hose are placed in the outer hose, and both ends of the inner hose are open.

[0008] Further, the umbrella-shaped collection structure includes umbrella ribs and a coating covering the umbrella ribs. One end of the umbrella ribs is fixed to the outer hose, and the other end is connected to the inner hose through a pull rod. The umbrella ribs can elastically deform under the pulling of the pull rod.

[0009] Further, a first hook for pulling the umbrella ribs is provided at the first end of the pull rod, a second hook for pulling the inner hose is provided at the second end of the pull rod, and a plurality of avoidance grooves for avoiding the pull rod are provided on the outer hose.

[0010] Further, a collection cavity communicating with the outer hose is provided inside the sliding barrel, the piston member is slidably disposed in the collection cavity, and a push rod is fixed or integrally formed at one end of the piston member away from the outer hose.

[0011] Further, a first mounting hole matching the outer diameter of the outer hose is provided on the body. The body is provided with a threaded section and a conical end at the end of the body. The end dimension of the conical end is the smallest, and the threaded section is adjacent to the conical end. A locking buckle for pressing the outer hose is fitted on the body, and the locking buckle is provided with an internal thread matching the threaded section and an internal conical surface matching the conical end.

[0012] Further, the inner hose is fixed to one end of the sliding barrel through a locking ring. The sliding barrel is provided with a second mounting hole matching the outer diameter of the inner hose. An external thread is formed at the end of the sliding barrel to form a threaded end. The threaded end of the sliding barrel is fitted with a locking ring. The locking ring is provided with an internal thread matching the external thread of the sliding barrel, and the threaded end of the sliding barrel has a cross groove, so that the threaded end can generate a radial displacement under the action of the locking ring, thereby locking the inner hose.

[0013] Further, the sizes of a plurality of umbrella-shaped collection structures are different.

[0014] Further, small holes for blood to pass through are provided on the coating, and a protective sleeve is provided between the push rod and the body.

[0015] A cleaning method for a multi-stage umbrella-shaped thrombus cleaner as described above includes the following steps:

[0016] Step 1: Use the push rod to draw the thrombus solvent into the body and the collection cavity of the sliding barrel, and push the sliding barrel to the end of the body away from the umbrella-shaped collection structure to ensure that the umbrella-shaped collection structure is in a closed state;

[0017] Step 2: Insert the outer hose into the blood vessel through the end injection port to reach the position of the blood vessel where thrombus cleaning is required, and push the push rod to inject the thrombus solvent into the blood vessel;

[0018] Step 3: Continue to push the outer hose so that the umbrella-shaped collection structures on the outer hose all cross the position of the blood vessel where thrombus treatment is required;

[0019] Step 4: After standing for the set time, push the sliding barrel to move axially towards the umbrella-shaped collection structure. At this time, the pull rod will gradually become slack, and the umbrella ribs on the umbrella-shaped collection structure will automatically open under the action of the original rigidity. The opening degree of the opening depends on the axial displacement of the sliding barrel.

[0020] Step 5: While keeping the umbrella-shaped collection structure open, pull the entire cleaner outwards. During the movement, the umbrella-shaped collection structure will scrape off the thrombus on the blood vessel wall and cause the thrombus to gradually accumulate in the coating in the umbrella-shaped collection structure.

[0021] Step 6: When the umbrella-shaped collection structure approaches the initial blood vessel insertion port, control the sliding barrel to move axially away from the umbrella-shaped collection structure, drive the inner hose to move axially, and the pull rod will start to pull the umbrella-shaped collection structure under the action of the inner hose, forcing the umbrella ribs to start to deform forcibly and finally closing the umbrella-shaped collection structure. At this time, the remaining part of the thrombus in the blood vessel will be closed inside the coating of the umbrella-shaped collection structure. Withdraw the outer hose from the blood vessel to complete the cleaning of the thrombus.

[0022] Beneficial effects:

[0023] (1) By injecting a thrombus solvent through an injection device, the thrombus in the blood vessel is softened, and some small particle thrombi can fall off from the blood vessel wall. In addition, after injecting the thrombus solvent, stand for a period of time, open the closed umbrella-shaped collection structure, then manually control the movement of the thrombus cleaning device, close the umbrella-shaped collection structure at the outlet end and then withdraw the cleaning device, and finally realize the removal of the thrombus in the blood vessel, so as to achieve the purpose of effectively dredging the blood vessel. The multi-stage umbrella-shaped thrombus cleaner of the present invention integrates the injection device and the thrombus cleaning device. On the one hand, it saves costs, and on the other hand, there is no need to replace the instrument, which is convenient for operation; in addition, it is convenient to control the time interval between thrombus injection and thrombus cleaning by operating the same instrument, preventing missing the best cleaning time.

[0024] (2) The multi-stage porous umbrella-shaped collection structure of different sizes is adopted. While preventing the thrombus cleaning device itself from blocking the blood vessel, it can remove various sizes of thrombi from the blood vessel, significantly improving the cleaning effect, reducing the operation difficulty, and reducing the secondary harm to the human body.

[0025] (3) The present invention designs an umbrella-shaped collection mechanism with variable opening size. The opening degree of the opening depends on the axial displacement of the sliding barrel, and different opening degrees can be adopted according to different blood vessels and different severities of thrombi, thus effectively improving the applicable range of the cleaning device. Description of the drawings

[0026] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0027] Figure 1 It is the assembly drawing of the thrombus cleaning device in the tightened and closed state of the umbrella-shaped collection structure;

[0028] Figure 2 It is Figure 1 the partial enlarged view at position A in

[0029] Figure 3 It is the assembly drawing of the thrombus cleaning device in the opened state of the umbrella-shaped collection mechanism;

[0030] Figure 4 It is Figure 3 the partial enlarged view at position B in

[0031] Figure 5 It is the sectional view of the thrombus cleaning device in the working state;

[0032] Figure 6 It is Figure 5 the partial enlarged view at position C in

[0033] Figure 7 It is Figure 6 the partial enlarged view at position D in

[0034] Figure 8 It is Figure 5 the partial enlarged view at position E in

[0035] Wherein, 1. push rod, 2. protective sleeve, 3. body, 4. sliding barrel, 41. handle, 42. collection cavity, 5. locking ring, 6. locking buckle, 7. outer hose, 71. injection port, 72. avoidance groove, 8. inner hose, 9. pull rod, 10. coating, 11. umbrella rib. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0039] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, up, down, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Without contrary instructions, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the scope of protection of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0040] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of differentiating the corresponding components. Without otherwise stating, the above words have no special meanings, and thus should not be construed as limiting the scope of protection of the present invention.

[0041] As Figures 1 to 8 , a multi-stage umbrella-type thrombus cleaner includes an injection device for injecting thrombus solvent and a thrombus cleaning device for cleaning thrombus. The injection device includes a body 3, an outer hose 7 is connected to the body 3, the end of the outer hose 7 has an injection port 71, a cavity communicating with the outer hose 7 is provided in the body 3, a piston member for sucking and pushing out thrombus solvent is provided in the cavity, a sliding member is also provided in the cavity, the thrombus cleaning device includes a plurality of umbrella-type collection structures, one end of the umbrella-type collection structure is connected to the outer hose 7, and the other end is connected to the sliding member. The relative movement between the outer hose 7 and the sliding member realizes the expansion or closing of the umbrella-type collection structure.

[0042] The sliding member includes a sliding barrel 4, a handle 41 is connected to the sliding barrel 4, the umbrella-type collection structure is connected to the sliding barrel 4 through an inner hose 8, and the inner hose 8 and the outer hose 7 are placed in the outer hose 7, and both ends of the inner hose 8 are open.

[0043] The umbrella-shaped collection structure includes umbrella ribs 11 and a coating 10 covering the umbrella ribs 11. The coating 10 is provided with small holes for blood to pass through. The sizes of several umbrella-shaped collection structures are different and are used to collect thrombi of different sizes. It should be noted that the number of combinations of umbrella-shaped collection structures needs to be determined according to the actual situation and is not a fixed value. In addition, the more holes on the coating 10, the better without affecting the structural performance, which can improve the blood patency during the cleaning process. In the embodiment of the present invention, there are 5 groups of umbrella-shaped collection structures. The umbrella-shaped collection structure closest to the injection port at the end of the outer hose 7 has the largest size, and the umbrella-shaped collection structures farther away from the injection port at the end of the outer hose 7 have smaller sizes

[0044] One end of the umbrella rib 11 is fixed to the outer hose 7, and the other end is connected to the inner hose 8 through a pull rod 9. The umbrella rib 11 can be elastically deformed under the pulling of the pull rod 9.

[0045] The first end of the pull rod 9 is provided with a first hook for pulling the umbrella rib 11, the second end of the pull rod 9 is provided with a second hook for pulling the inner hose 8, and the outer hose 7 is provided with several avoidance grooves 72 for avoiding the pull rod 9. The number of avoidance grooves 72 is the same as that of the pull rod 9.

[0046] The sliding barrel 4 has a collection cavity 42 communicated with the outer hose 7. The piston member is slidably arranged in the collection cavity 42. One end of the piston member away from the outer hose 7 is fixed or integrally formed with a push rod 1. A protective sleeve 2 is arranged between the push rod 1 and the body 3.

[0047] The body 3 is provided with a first mounting hole matching the outer diameter of the outer hose 7. The body 3 is provided with a threaded section and a conical end at the end of the body 3. The end size of the conical end is the smallest, and the threaded section is adjacent to the conical end. A lock catch 6 for pressing the outer hose 7 is fitted on the body 3. The lock catch 6 is provided with an internal thread matching the threaded section and an internal conical surface matching the conical end.

[0048] The inner hose 8 is fixed to one end of the sliding barrel 4 through a locking ring 5. The sliding barrel 4 is provided with a second mounting hole matching the outer diameter of the inner hose 8. The end of the sliding barrel 4 is provided with an external thread to form a threaded end. The threaded end of the sliding barrel 4 is fitted with a locking ring 5. The locking ring 5 is provided with an internal thread matching the external thread of the sliding barrel 4, and the threaded end of the sliding barrel 4 has a cross groove, so that the threaded end can generate a radial displacement under the action of the locking ring 5, thereby locking the inner hose 8.

[0049] A cleaning method of a multi-stage umbrella-shaped thrombus cleaner as described above includes the following steps:

[0050] Step 1: Use the push rod 1 to draw the thrombus solvent into the body 3 and the collection cavity 42 of the sliding barrel 4, and push the sliding barrel 4 to the end of the body 3 away from the umbrella-shaped collection structure to ensure that the umbrella-shaped collection structure is in a closed state;

[0051] Step 2: Insert the outer hose 7 into the blood vessel through the end injection port 71 until it reaches the position of the blood vessel where thrombus cleaning is required, and then push the push rod 1 to inject the thrombus solvent into the blood vessel;

[0052] Step 3: Continue to push the outer hose 7 forward so that the umbrella-shaped collection structure on the outer hose 7 all passes over the position of the blood vessel where thrombus treatment is required;

[0053] Step 4: After standing for the set time, push the sliding barrel 4 to move axially in the direction close to the umbrella-shaped collection structure. At this time, the pull rod 9 will gradually become slack, and the umbrella ribs 11 on the umbrella-shaped collection structure will automatically open under the action of the original rigidity. The opening degree of the opening depends on the axial displacement of the sliding barrel 4;

[0054] Step 5: While keeping the umbrella-shaped collection structure open, pull the entire cleaner outwards. During the movement, the umbrella-shaped collection structure will scrape off the thrombus on the blood vessel wall and make the thrombus gradually accumulate in the coating 10 in the umbrella-shaped collection structure;

[0055] Step 6: When the umbrella-shaped collection structure approaches the initial insertion port of the blood vessel, control the sliding barrel 4 to move axially in the direction away from the umbrella-shaped collection structure, drive the inner hose 8 to move axially, and the pull rod 9 will start to pull the umbrella-shaped collection structure under the action of the inner hose 8, forcing the umbrella ribs 11 to start to deform forcibly and finally close the umbrella-shaped collection structure. At this time, the remaining part of the thrombus in the blood vessel will be closed inside the coating 10 of the umbrella-shaped collection structure. Then, pull out the outer hose 7 from the blood vessel to complete the cleaning of the thrombus.

[0056] It should be understood that the specific embodiments described above are only used to explain the present invention and are not used to limit the present invention. Obvious changes or variations derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A multi-stage umbrella-type thrombus cleaner, characterized in that : It includes an injection device for injecting thrombolytic agents and a thrombus cleaning device for cleaning thrombi. The injection device includes a main body (3), an outer hose (7) is connected to the main body (3), a cavity communicating with the outer hose (7) is provided inside the main body (3), a piston member for sucking and pushing out thrombolytic agents is provided in the cavity, and a sliding member is also provided in the cavity. The thrombus cleaning device includes a number of umbrella-shaped collection structures. One end of the umbrella-shaped collection structure is connected to the outer hose (7), and the other end is connected to the sliding member. The relative movement between the outer hose (7) and the sliding member realizes the unfolding or closing of the umbrella-shaped collection structure; the sliding member includes a sliding barrel (4), the umbrella-shaped collection structure is connected to the sliding barrel (4) through an inner hose (8), and the inner hose (8) is placed in the outer hose (7) and both ends of the inner hose (8) are open; the umbrella-shaped collection structure includes umbrella ribs (11) and a coating (10) covering the umbrella ribs (11). One end of the umbrella ribs (11) is fixed to the outer hose (7), and the other end is connected to the inner hose (8) through a pull rod (9). The umbrella ribs (11) can be elastically deformed under the pull of the pull rod (9); a collection cavity (42) communicating with the outer hose (7) is provided inside the sliding barrel (4), the piston member is slidably arranged in the collection cavity (42), and a push rod (1) is fixed or integrally formed at one end of the piston member away from the outer hose (7); the inner hose (8) is fixed to one end of the sliding barrel (4) through a locking ring (5). The sliding barrel (4) is provided with a second mounting hole matching the outer diameter of the inner hose (8). The end of the sliding barrel (4) is provided with an external thread to form a threaded end. The threaded end of the sliding barrel (4) is matched with a locking ring (5). The locking ring (5) is provided with an internal thread matching the external thread of the sliding barrel (4), and the threaded end of the sliding barrel (4) has a cross groove, so that the threaded end can generate a radial displacement under the action of the locking ring (5) to lock the inner hose (8).

2. The multi-stage umbrella type thrombus cleaner according to claim 1, wherein: A first hook for pulling the umbrella ribs (11) is provided at the first end of the pull rod (9), a second hook for pulling the inner hose (8) is provided at the second end of the pull rod (9), and a number of avoidance grooves (72) for avoiding the pull rod (9) are provided on the outer hose (7).

3. The multi-stage umbrella-type thrombus cleaner according to claim 1, characterized in that: A first mounting hole matching the outer diameter of the outer hose (7) is provided on the main body (3). The main body (3) is provided with a threaded section and a conical end at the end of the main body (3). The end dimension of the conical end is the smallest, and the threaded section and the conical end are adjacent to each other. A lock catch (6) for pressing the outer hose (7) is fitted on the main body (3). The lock catch (6) is provided with an internal thread matching the threaded section and an internal conical surface matching the conical end.

4. The multi-stage umbrella type thrombus cleaner according to claim 1, wherein: The sizes of a number of umbrella-shaped collection structures are different, and small holes for blood to pass through are provided on the coating (10).

5. The multi-stage umbrella-type thrombus cleaner according to claim 1, characterized in that: A protective sleeve (2) is provided between the push rod (1) and the main body (3).

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