Embolus clearing filter device and blood recovery system

Abstract

The present specification provides an embolus suction filter device and a blood recovery system, the embolus suction filter device comprising: a tube body comprising a first end and a second end, wherein the first end is adapted to suck embolus and the second end is connected with a blood recovery device; a first filter component and a second filter component respectively arranged inside the tube body and adapted to block the embolus and make blood flow through; a power source arranged between the first filter component and the second filter component and outside the tube body, adapted to squeeze and release the tube body to generate a suction force inside the tube body for sucking embolus. Thus, the embolus suction and the filtration of embolus in blood can be considered, the stability of the embolus suction process can be improved and the purity of blood can be ensured, thereby providing convenience for blood recovery after blood collection, and shortening the interval time of blood flowing out of the embolus suction process and back to the patient's body.

Description

Technical Field

[0001] This specification relates to the field of medical device technology, and in particular to an embolus removal filtration device and a blood recovery system. Background Technology

[0002] Emboli can exist in the blood vessels of the human body. As the embolus grows, it can block the blood vessel, or it may break off and travel to other parts of the body with the bloodstream. If the embolus travels to smaller blood vessels (such as coronary arteries and cerebral vessels), it can cause serious harm to the body, or even endanger life.

[0003] The existing method for removing emboli involves inserting a catheter into a blood vessel in the patient's body, connecting one end to a suction device (such as a syringe or suction pump), and the other end into the body through the blood vessel. Once the catheter reaches the lesion, the suction device is activated to draw the emboli from the blood vessel to the outside of the body, thereby removing the emboli from the patient's body.

[0004] During embolic removal, blood will flow out. Excessive blood loss can be life-threatening and increase the risk of complications. Therefore, timely blood transfusion is necessary during embolic removal. However, due to blood scarcity, the required blood supply may not always be met. Therefore, collecting the blood flowing out during embolic removal and reinfusing it into the patient would be a better solution.

[0005] However, the blood collected during the removal of emboli contains impurities (such as emboli, air entering through the connection between the suction device and the catheter port), requiring additional time to filter the impurities before it can be reinfused into the patient.

[0006] As can be seen from the above, how to shorten the interval between the return of blood flowing out during the embolization process to the patient's body is a problem that needs to be solved by those skilled in the art. Summary of the Invention

[0007] In view of this, on the one hand, the embodiments of this specification provide an embolus removal and filtration device that can both absorb emboli and filter emboli in the blood, and can improve the stability of the embolus absorption process and ensure the purity of the blood, thereby facilitating blood reinfusion after blood collection and shortening the interval between the blood flowing out during the embolus absorption process and the reinfusion of the blood into the patient's body.

[0008] On the other hand, embodiments of this specification also provide a blood recovery system that can simultaneously absorb emboli, filter emboli from the blood, and collect blood. It can also improve the stability of the emboli absorption process and ensure the purity of the blood, thereby facilitating blood reinfusion after blood collection and shortening the interval between the blood flowing out during emboli absorption and reinfusion into the patient's body.

[0009] This specification provides an embodiment of an embolus removal and filtering device, comprising:

[0010] The tube includes a first end and a second end, wherein the first end is adapted to aspirate embolus, and the second end is connected to a blood recovery device;

[0011] The first and second filter components are respectively disposed inside the tube body, and are adapted to block the embolus and allow blood to flow through;

[0012] A power source is disposed between the first filter component and the second filter component and outside the tube body, and is adapted to squeeze and release the tube body so that the tube body generates the power to suck up the embolus.

[0013] Optionally, the tube body further includes: a first chamber, a second chamber, and a connecting tube section; wherein:

[0014] The first chamber is disposed between the first end and the connecting tube portion, and is adapted to accommodate the first filter component;

[0015] The connecting pipe is disposed between the first chamber and the second chamber and is adapted to be coupled with the power source;

[0016] The second chamber is disposed between the connecting tube and the second end, and is adapted to accommodate the second filter component.

[0017] Optionally, the cross-sectional dimension of the first chamber in the direction perpendicular to the blood flow direction is larger than the cross-sectional dimension of the first end in the direction perpendicular to the blood flow direction;

[0018] The cross-sectional dimension of the second chamber perpendicular to the blood flow direction is larger than the cross-sectional dimension of the second end perpendicular to the blood flow direction.

[0019] Optionally, the first end is positioned above the power source, and the second end is positioned below the power source.

[0020] Optionally, the tube body has a bent shape.

[0021] Optionally, the porosity of the first filter element is greater than that of the second filter element.

[0022] Optionally, the first filtering component includes a first filter; the first filter has a three-dimensional structure, and a portion of its outer contour has a gap with the tube body.

[0023] Optionally, the first filter element is made of polyester, pure cotton, or silk.

[0024] Optionally, the second filtering component includes a second filter; the second filter has a three-dimensional structure, and a portion of its outer contour has a gap with the tube body.

[0025] Optionally, the second filter element is made of polyester, cotton, or silk.

[0026] Optionally, the power source is a peristaltic pump.

[0027] Optionally, the inner diameter of the first end portion ranges from 3 mm to 8 mm.

[0028] This specification also provides a blood recovery system, comprising:

[0029] The embolus removal and filtering device described in any of the above descriptions is suitable for suctioning and filtering embolus.

[0030] A blood collection device adapted to collect blood flowing from the embolus removal filter.

[0031] Optionally, the blood collection device includes a suction component adapted for use in combination with the embolus removal filter.

[0032] Optionally, the blood collection device includes a plurality of blood storage chambers connected in sequence, wherein the blood storage chambers relatively closer to the embolus removal filter are higher than the blood storage chambers relatively farther away from the embolus removal filter.

[0033] The embolus removal and filtration device described in this embodiment includes a tube, a first filter element, a second filter element, and a power source. The first and second filter elements are respectively disposed inside the tube, suitable for blocking the embolus and allowing blood to flow through. The power source is disposed between the first and second filter elements and outside the tube, suitable for squeezing and releasing the tube. As can be seen, the first and second filter elements allow for simultaneous filtration of the embolus in the blood during embolus removal. Squeezing and releasing the tube by the power source generates continuous suction power for the embolus, thereby improving the stability of the embolus removal process. Since the power source is located outside the tube and not connected to its end, external impurities (such as air) can be prevented from entering the blood, ensuring blood purity. In summary, the embolus removal and filtration device described in this embodiment facilitates blood reinfusion after collection, shortening the interval between the return of blood flowing out during embolus removal to the patient.

[0034] Furthermore, since the cross-sectional dimension of the first chamber in the direction perpendicular to the blood flow is larger than the cross-sectional dimension of the first end in the direction perpendicular to the blood flow, and the cross-sectional dimension of the second chamber in the direction perpendicular to the blood flow is larger than the cross-sectional dimension of the second end in the direction perpendicular to the blood flow, the accommodating space of the first chamber and the second chamber can be expanded, thereby allowing the first chamber to accommodate more first filter components of different shapes and / or sizes, and the second chamber to accommodate more second filter components of different shapes and / or sizes.

[0035] Furthermore, the first end is positioned above the power source, and the second end is positioned below the power source, thereby making the overall structure of the embolus removal filter device more compact and improving space utilization.

[0036] Furthermore, since the porosity of the first filter element is greater than that of the second filter element, the first filter element can block larger emboli, while the second filter element can block smaller emboli, thereby improving the filtration effect of emboli.

[0037] The blood recovery system described in this specification's embodiments involves drawing and filtering emboli through the embolus removal filter; and collecting blood flowing from the embolus removal filter through the blood collection device. This allows for the simultaneous drawing of emboli, filtering of emboli from the blood, and blood collection. Furthermore, the embolus removal filter improves the stability of the embolus drawing process and ensures blood purity. In summary, the blood recovery system described in this specification's embodiments facilitates blood reinfusion after collection, shortening the interval between the return of blood flowing out during embolus drawing to the patient. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of a blockage removal filter device provided in an embodiment of this specification.

[0040] Figure 2 This is a schematic diagram of another embolus removal filter device provided in the embodiments of this specification.

[0041] Figure 3 This is a schematic diagram of a blood recovery system provided as an embodiment of this specification. Detailed Implementation

[0042] As is known from the background art, the blood collected during embolism removal contains embolus, and additional time is required to filter the embolus from the blood before it can be reinfused into the patient. Therefore, how to shorten the interval between the reinfusion of blood flowing out during embolism removal and the patient's return to the body is a problem that needs to be solved by those skilled in the art.

[0043] To address the aforementioned problems, this specification provides an embolus removal and filtration device, comprising a tube, a first filter element, a second filter element, and a power source. The first and second filter elements are respectively disposed inside the tube, adapted to block the embolus and allow blood to flow through. The power source is disposed between the first and second filter elements and outside the tube, adapted to compress and release the tube. This allows for both embolus removal and filtration, improving the stability of the embolus removal process and ensuring blood purity. This facilitates blood reinfusion after collection and shortens the interval between embolus removal and reinfusion into the patient.

[0044] To enable those skilled in the art to more clearly understand the concept, implementation method and advantages of the technical solution in this specification, the following is a schematic description with reference to the accompanying drawings.

[0045] Reference Figure 1 This is a schematic diagram of the structure of an embolus removal and filtering device provided in an embodiment of this specification. In this embodiment, the embolus removal and filtering device M1 may include:

[0046] The tube body 11 includes a first end 11-1 and a second end 11-2, wherein the first end 11-1 is adapted to aspirate embolic material, and the second end 11-2 is connected to a blood recovery device (not shown in the figure). The embolic material can be an embolus or other substances that can block blood vessels; this specification does not impose specific limitations on this.

[0047] The first filter element 12 and the second filter element 13 are respectively disposed inside the tube body 11, adapted to block the embolus and allow blood to flow through. Specifically, in Figure 1 In the example shown, the first filter element 12 is located in the tube 11 near the first end 11-1, and the second filter element 13 is located in the tube 11 near the second end 11-2.

[0048] A power source 14 is disposed between the first filter element 12 and the second filter element 13 and outside the tube body 11, and is adapted to squeeze and release the tube body 11 so that the tube body 11 generates a force to suck up the embolus.

[0049] In practical application, the first end 11-1 of the tube 11 enters the body through a blood vessel. Upon reaching the location of the embolus, the power source 14 is activated. The power source 14 squeezes and releases the tube 11, thereby generating continuous suction force within the tube 11 to draw in the embolus. The first end 11-1 of the tube 11 draws in the embolus, which is drawn into the tube 11 through the first end and moves along the tube 11. During the suction of the embolus, blood is also drawn into the tube 11 through the first end and moves along the tube 11. Therefore, at least one substance, either blood or embolus, is present in the tube 11.

[0050] The first filter element 12 is disposed at the front end of the power source 14. The first filter element 12 is capable of blocking at least part of the plug (such as...) that enters from the first end 11-1 of the pipe body 11. Figure 1 The first filter (W1) allows blood to flow smoothly through the tube, thus performing initial filtration of the embolus entering the tube 11 and preventing blockages caused by excessively large embolus being squeezed by the power source 14. The second filter (13) is located at the rear end of the power source 14 and blocks the embolus passing through the first filter (12), thus performing secondary filtration and preventing the embolus from entering the blood recovery device.

[0051] Based on the multiple filtrations performed by the first filter element 12 and the second filter element 13, the blood in the blood recovery device may be free of emboli. Even if emboli are present, the multiple filtrations by the first filter element 12 and the second filter element 13 result in a low emboli content in the blood, thus shortening the time required for impurity filtration in the blood recovery device. Furthermore, since the power source 14 is located outside the tube body 11 and is not connected to the end of the tube body 11, external impurities (such as air) can be prevented from entering the blood, ensuring blood purity and further shortening the time required for impurity filtration in the blood recovery device.

[0052] As can be seen from the above, the first and second filter components can simultaneously filter the embolus in the blood during the process of embolus removal; by squeezing and releasing the tube body by the power source, continuous power can be generated to remove the embolus, thereby improving the stability of the embolus removal process; since the power source is located outside the tube body and is not connected to the end of the tube body, external impurities (such as air) can be prevented from entering the blood, ensuring the purity of the blood.

[0053] In summary, the embolus removal and filtration device in the embodiments of this specification can facilitate blood reinfusion after blood collection and shorten the interval between the blood flowing out during the embolus removal process and the reinfusion into the patient's body.

[0054] In practical applications, the embolus removal and filtration device described in this specification can shorten the interval between the return of blood flowing out during embolus removal to the patient's body. This allows for timely control of the overall bleeding volume during embolus removal (i.e., the total bleeding volume minus the returned blood volume), preventing excessive bleeding and premature cessation of the procedure. This improves the safety of embolus removal and extends the operation time, thereby increasing the one-time embolus removal rate.

[0055] In practical implementation, the specific structure of the tube can be set according to specific circumstances and requirements. In one optional example, refer to... Figure 1 The tube body may further include: a first chamber 11-3, a second chamber 11-4, and a connecting tube portion 11-5. Wherein: the first chamber 11-3 is disposed between the first end portion 11-1 and the connecting tube portion 11-5, and is adapted to accommodate the first filter element 12. The connecting tube portion 11-5 is disposed between the first chamber 11-3 and the second chamber 11-4, and is adapted to couple with the power source 14. The second chamber 11-4 is disposed between the connecting tube portion 11-5 and the second end portion 11-2, and is adapted to accommodate the second filter element 13.

[0056] In practical applications, the relative dimensions between the first chamber and the first end can be determined according to specific circumstances and requirements. For example, refer to... Figure 1 The cross-sectional dimension of the first chamber 11-3 in the direction perpendicular to the blood flow is larger than the cross-sectional dimension of the first end 11-1 in the direction perpendicular to the blood flow. This expands the accommodating space of the first chamber 11-3, which is beneficial for accommodating more first filter components 12 of different shapes and / or sizes.

[0057] In practical applications, the relative dimensions between the second chamber and the second end can be determined based on specific circumstances and requirements. For example, refer to... Figure 1 The cross-sectional dimension of the second chamber 11-4 in the direction perpendicular to the blood flow is larger than the cross-sectional dimension of the second end 11-2 in the direction perpendicular to the blood flow. This expands the accommodating space of the second chamber 11-4, which is beneficial for accommodating more second filter components 13 of different shapes and / or sizes.

[0058] In practical applications, the relative dimensions of the first chamber, the second chamber, and the connecting tube can be determined according to specific circumstances and requirements. For example, refer to... Figure 1 The first chamber 11-3 has a larger cross-sectional dimension perpendicular to the blood flow direction than the connecting tube 11-5, and the second chamber 11-4 has a larger cross-sectional dimension perpendicular to the blood flow direction than the connecting tube 11-5. This expands the accommodating space of the second chamber 11-4, which is beneficial for accommodating more second filter components 13 of different shapes and / or sizes.

[0059] In practical applications, the relative positions between the first end, the second end, and the power source of the tube can be determined according to specific circumstances and requirements.

[0060] For example, such as Figure 1 As shown, the first end 11-1 of the tube 11 is positioned higher than the power source 14, and the second end 11-2 of the tube 11 is positioned lower than the power source 14. Therefore, the overall structure of the embolus removal filter M1 is more compact, thereby improving space utilization.

[0061] For example, such as Figure 2 The diagram shown is a structural schematic of another embolus removal filter device provided in an embodiment of this specification. In this example, the embolus removal filter device M2 includes: a tube body 21, a first filter element 22, a second filter element 23, and a power source 24. The tube body 21 may include a first end 21-1 and a second end 21-2. It is understood that the usage process of the embolus removal filter device M2 can be referred to the relevant sections above, and will not be repeated here.

[0062] The central axes of the first ends 21-1 and 21-2 of the tube 21 overlap, meaning that the first ends 21-1 and 21-2 are on the same plane, and the height difference between the first ends 21-1 and 21-2 and the power source 14 is equal. This allows the embolus removal filter M2 to more effectively remove emboli.

[0063] In practice, the specific shape of the tube can be determined according to the specific circumstances.

[0064] In an optional example, such as Figure 1 As shown, the tube 11 can have a bent shape. Specifically, refer to... Figure 1From the view shown, the first end 11-1 of the tube body 11 is located on the upper part of the first side of the first chamber 11-3; the connecting tube 11-5 of the tube body 11 is located on the lower part of the second side of the first chamber 11-3 and on the upper part of the first side of the second chamber 11-4, and the two ends of the connecting tube 11-5 are at the same height; the second end 11-2 of the tube body 11 is located on the lower part of the second side of the second chamber 11-4.

[0065] In another optional example, such as Figure 2 As shown, the tube 21 can be dumbbell-shaped. Specifically, refer to... Figure 2 From the perspective shown, the first end 21-1 of the tube body 21 is located in the middle of the first side of the first chamber 21-3; the connecting tube 21-5 of the tube body 21 is located in the middle of the second side of the first chamber 21-3 and in the middle of the first side of the second chamber 21-4, and the two ends of the connecting tube 21-5 are at the same height; the second end 21-2 of the tube body 21 is located in the middle of the second side of the second chamber 21-4.

[0066] In practice, the porosity of the first filter element can be greater than that of the second filter element. Therefore, the first filter element can block larger emboli, while the second filter element can block smaller emboli, thus improving the filtration efficiency.

[0067] In specific implementations, the first filtering component may include a first filter, and the specific structure of the first filter can be set according to specific circumstances. For example, the first filter may be a flat filter screen structure. Alternatively, the first filter may have a three-dimensional structure, with a gap between part of its outer contour and the tube body.

[0068] In specific implementation, when the first filter has a three-dimensional structure, the specific shape of the three-dimensional structure of the first filter can be set according to the specific circumstances.

[0069] For example, such as Figure 1 As shown, the first filter of the first filter component 12 has a U-shaped three-dimensional structure protruding towards the first end 11-1, and the top of the first filter (i.e., the end near the first end 11-1) is sealed, thereby making the protruding three-dimensional structure of the first filter... Figure 1 It presents an inverted "U" shape. A gap exists between part of the outer contour of the first filter and the tube body 11 (e.g., Figure 1 The gaps 1a and 1b in the middle can be used to accommodate emboli (such as...) Figure 1 The embolus W1 is located in the gap 1a.

[0070] For example, such as Figure 2As shown, the first filter element 22 has a triangular three-dimensional structure protruding towards the first end 21-1, and the top of the first filter element (i.e., the end near the first end 21-1) is sealed. A gap exists between part of the outer contour of the first filter element and the tube body 21 (e.g., ...). Figure 2 The gaps 2a and 2b in the middle can be used to accommodate emboli.

[0071] In a specific implementation, the first filtering component may include multiple first filters, wherein the porosity of the first filter relatively closer to the first end is not less than the porosity of the first filter relatively farther from the first end. Thus, the plug entering the pipe can be filtered multiple times before the power source, preventing blockages caused by excessively large plugs being unable to pass through due to the power source squeezing the pipe.

[0072] Furthermore, when the first filtering component includes multiple first filters, the specific structure of each first filtering component can be determined according to the specific circumstances. The specific structures of the multiple first filters can be the same or at least partially different.

[0073] In practice, the material used to manufacture the first filter element can be selected according to specific circumstances. For example, the first filter element can be made of polyester, pure cotton, or silk.

[0074] In specific implementations, the specific structure of the second filtering component can be determined according to the specific circumstances. For example, the second filtering component may include a second filter. Based on this, the specific structure of the second filter can be set according to the specific circumstances. For example, the second filter may be a flat filter screen structure. Another example is that the second filter may have a three-dimensional structure, and a gap exists between part of its outer contour and the tube body.

[0075] In specific implementation, when the second filter has a three-dimensional structure, the specific shape of the three-dimensional structure of the second filter can be set according to the specific circumstances.

[0076] For example, such as Figure 1 As shown, the second filter element 13 has a U-shaped three-dimensional structure protruding towards the second end 11-2, and the top of the second filter (i.e., the end near the second end 11-2) is sealed, thereby making the protruding three-dimensional structure of the second filter... Figure 1 The filter is shaped like a "U". A gap exists between a portion of the outer contour of the second filter and the tube 11 (e.g., ...). Figure 1 The gaps 1c and 1d in the middle can be used to accommodate emboli.

[0077] For example, such as Figure 2As shown, the second filter element 23 has a triangular three-dimensional structure protruding towards the second end 21-2, and the top of the second filter (i.e., the end near the second end 21-2) is sealed. A gap exists between part of the outer contour of the second filter and the tube body 21 (e.g., ...). Figure 2 The gaps 2c and 2d in the middle can be used to accommodate emboli.

[0078] In a specific implementation, the second filtering component may include multiple second filters, wherein the porosity of the second filter relatively farther from the second end is not less than the porosity of the second filter relatively closer to the second end. Thus, the embolus within the tube can be filtered multiple times before the second end, preventing embolus from flowing into the blood recovery device.

[0079] Furthermore, when the second filter component includes multiple second filters, the specific structure of each second filter component can be determined according to the specific circumstances. The specific structures of the multiple second filters can be the same or at least partially different.

[0080] In practice, the material used to make the second filter element can be selected according to the specific circumstances. For example, the second filter element can be made of polyester, pure cotton, or silk.

[0081] In practice, the specific type of power source can be determined according to the specific circumstances. For example, the power source can be a peristaltic pump.

[0082] In practical implementation, since the power source is located outside the tube body, there are fewer restrictions on the size of the first end, and the size of the first end can be determined according to the specific circumstances. For example, the inner diameter of the first end can range from 3mm to 8mm.

[0083] In specific implementations, the embolus removal filter may also include a switching component (such as...). Figure 1 The switch component 15 is located at the first end. When aspirating the embolus, the switch component is in the open state. After confirming that all the embolus is inside the tube, the switch component can be in the closed state, thereby further controlling the bleeding volume. When the switch component is in the closed state, the blood in the tube can be completely aspirated using the power source of the embolus removal filter or other external power sources.

[0084] It is understood that, depending on the specific application scenario and requirements, the embolus removal filter device provided in the embodiments of this specification can be adaptively selected and / or modified. For example, the number of some components in the embolus removal filter device can be changed; the size of some components in the embolus removal filter device can be adjusted; or some components in the embolus removal filter device can be replaced by equivalent components. Based on this, more implementation schemes of the embolus removal filter device can be derived, and the embodiments of this specification do not limit these derived schemes.

[0085] This specification also provides a blood recovery system, which involves aspirating and filtering emboli through the embolus removal filter; and collecting blood flowing out of the embolus removal filter through the blood collection device. The specific structure and operating principle of the embolus removal filter can be found in the aforementioned related content and will not be repeated here. Therefore, this system can simultaneously aspirate emboli, filter emboli from the blood, and collect blood, improving the stability of the embolus aspiration process and ensuring blood purity. This facilitates blood reinfusion after collection and shortens the interval between the return of blood flowing out during embolus aspiration to the patient.

[0086] To enable those skilled in the art to more clearly understand the concept, implementation method and advantages of the technical solution in this specification, the following is a schematic description with reference to the accompanying drawings.

[0087] In an optional example, such as Figure 3 The diagram shown is a structural schematic of a blood recovery system provided in an embodiment of this specification. The blood recovery system SYS1 may include: an embolus removal and filtration device M1 and a blood collection device M3; wherein, the embolus removal and filtration device M1 is adapted to aspirate and filter emboli; and the blood collection device M3 is adapted to collect blood flowing out of the embolus removal and filtration device.

[0088] By employing the above-described scheme, the embolus removal filtration device and blood collection device can simultaneously absorb emboli, filter emboli from the blood, and collect the blood. Furthermore, the embolus removal filtration device improves the stability of the embolus absorption process and ensures blood purity. In summary, the blood recovery system described in this specification facilitates blood reinfusion after collection, shortening the interval between the return of blood flowing out during embolus removal to the patient.

[0089] Understandable Figure 1 For illustrative purposes only, in actual use, the blood recovery system may employ any of the embolus removal and filtration devices described in the above examples, and this specification does not impose any specific limitations on this.

[0090] In practical applications, the blood recovery system described in this specification can shorten the interval between the return of blood flowing out during the embolic removal process to the patient's body. This allows for timely control of the overall bleeding volume during embolic removal (i.e., the total bleeding volume minus the amount of blood returned), preventing the patient from bleeding excessively and prematurely stopping the procedure. This improves the safety of the embolic removal process and extends the operation time, thereby increasing the one-time clearance rate of the emboli.

[0091] In practice, the specific structure of the blood collection device can be determined according to the specific circumstances.

[0092] In an alternative example, the blood collection device may include a suction component adapted for use in conjunction with the embolus removal filter. Thus, the suction component can provide an external suction source for the embolus removal filter, collecting blood flowing from the embolus removal filter while simultaneously aspirating blood.

[0093] In another alternative example, the blood collection device may include at least one blood storage chamber adapted to collect blood flowing from the embolus removal filter. Thus, a suitable blood storage space can be provided.

[0094] In a specific implementation, when the blood collection device includes multiple blood storage chambers, these chambers can be connected sequentially, and the blood storage chambers relatively closer to the embolus removal filter are positioned higher than those relatively farther away. This design provides a larger blood storage space, and the height difference between the multiple blood storage chambers allows for smoother blood flow and a more compact arrangement, improving space utilization.

[0095] It should be noted that in the description of this specification, the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and "connection," etc., indicating the orientation or structural relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this specification and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. The terms in this specification can be understood according to different application scenarios. For example, "above" or "below" a second feature can include the first and second features being in direct contact, or it can include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, "above" a second feature can include the first feature being directly above or diagonally above the second feature, or simply indicating that the height of the first feature is higher than that of the second feature. "Below" a second feature can include the first feature being directly below or diagonally below the second feature, or simply indicating that the height of the first feature is less than that of the second feature. For those skilled in the art, the specific meaning of the above terms in this specification can be understood according to the specific circumstances.

[0096] Furthermore, the term "an embodiment" or "embodiment" as used in this specification refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this specification. In the description of this specification, terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with terms such as "first" and "second" may explicitly or implicitly include one or more of that feature. Moreover, terms such as "first" and "second" are used to distinguish similar objects and are not necessarily used to describe a specific order or indicate importance. It is understood that such terms may be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein.

[0097] While the embodiments disclosed in this specification are as described above, this specification is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of this specification; therefore, the scope of protection of this specification should be determined by the scope defined in the claims.

Claims

1. A filter device for removing emboli, characterized in that, include: The tube body includes a first end and a second end, wherein the first end is adapted to aspirate embolus, and the second end is connected to a blood recovery device, wherein the tube body has a single-channel structure; A first filter element and a second filter element are respectively disposed inside the tube body, adapted to block the embolus and allow blood to flow through; the porosity of the first filter element is greater than that of the second filter element; the first filter element includes a first filter, which is a conical three-dimensional structure protruding towards the first end, the top of the first filter is sealed and a portion of its outer contour has a gap with the tube body for accommodating the embolus; the second filter element includes a second filter, which is a conical three-dimensional structure protruding towards the second end, the top of the second filter is sealed and a portion of its outer contour has a gap with the tube body for accommodating the embolus; The first filtering component includes a plurality of first filters, wherein the porosity of the first filter relatively closer to the first end is greater than the porosity of the first filter relatively farther from the first end; A power source is disposed between the first filter component and the second filter component and outside the tube body, and is adapted to squeeze and release the tube body so that the tube body generates the power to suck up the embolus.

2. The embolus removal and filtering device according to claim 1, characterized in that, The tube body further includes: a first chamber, a second chamber, and a connecting tube section; wherein: The first chamber is disposed between the first end and the connecting tube portion, and is adapted to accommodate the first filter component; The connecting pipe is disposed between the first chamber and the second chamber and is adapted to be coupled with the power source; The second chamber is disposed between the connecting tube and the second end, and is adapted to accommodate the second filter component.

3. The embolus removal and filtering device according to claim 2, characterized in that, The cross-sectional dimension of the first chamber perpendicular to the blood flow direction is larger than the cross-sectional dimension of the first end perpendicular to the blood flow direction; The cross-sectional dimension of the second chamber perpendicular to the blood flow direction is larger than the cross-sectional dimension of the second end perpendicular to the blood flow direction.

4. The embolus removal and filtering device according to any one of claims 1 to 3, characterized in that, The first end is positioned above the power source, and the second end is positioned below the power source.

5. The embolus removal and filtering device according to claim 4, characterized in that, The tube has a bent shape.

6. The embolus removal and filtering device according to any one of claims 1 to 3, characterized in that, The first filter element is made of polyester, pure cotton or silk.

7. The embolus removal and filtering device according to any one of claims 1 to 3, characterized in that, The second filter element is made of polyester, pure cotton, or silk.

8. The embolus removal and filtering device according to any one of claims 1 to 3, characterized in that, The power source is a peristaltic pump.

9. The embolus removal and filtering device according to any one of claims 1 to 3, characterized in that, The inner diameter of the first end ranges from 3 mm to 8 mm.

10. A blood recovery system, characterized in that, include: The embolus removal and filtering device according to any one of claims 1 to 9 is suitable for aspirating and filtering emboli; A blood collection device adapted to collect blood flowing from the embolus removal filter.

11. The blood recovery system according to claim 10, characterized in that, The blood collection device includes a suction component and is adapted for use in combination with the embolus removal filter.

12. The blood recovery system according to claim 10, characterized in that, The blood collection device includes multiple blood storage chambers connected in sequence, and among the multiple blood storage chambers, the blood storage chambers relatively closer to the embolus removal filter are higher than the blood storage chambers relatively farther away from the embolus removal filter.

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