A negative pressure suction pump for a thrombus aspiration system

Abstract

This application discloses a negative pressure suction pump for a thrombus aspiration system, including a control unit, a first negative pressure pump, a base, a turntable, a turntable drive unit, a collection container, a lifting frame connected to the turntable via an electric lifting rod, and multiple liquid receiving containers. An inlet pipe and an outlet pipe are installed at the top of the collection container, and the outlet pipe is connected to the first negative pressure pump via a first connecting pipe. The collection container includes an upper container and a lower container; an interception unit for intercepting thrombi is installed inside the collection container. The top of the upper container has a motor mounting housing, within which a filter motor is installed. The interception unit includes a rotating plate, a first annular filter, and a second annular filter surrounding the first annular filter, both of which are mounted on the rotating plate. The negative pressure suction pump of this application can better aspirate thrombi and separate and collect thrombi and blood.

Description

Technical Field

[0001] This application relates to the field of medical devices, specifically to a negative pressure suction pump for a thrombus aspiration system. Background Technology

[0002] A thrombus aspiration device is a medical instrument used to remove blood clots from blood vessels, widely used in the treatment of deep vein thrombosis and peripheral artery disease. Its core principle is to remove the thrombus from the blood vessel through negative pressure aspiration, restoring blood flow. The thrombus aspiration device includes an aspiration catheter, a negative pressure source, connecting tubing, and a collection container. The aspiration catheter is inserted into the blood vessel to aspirate the thrombus, extracting a mixture of thrombus and blood into the collection container. Within the collection container, the thrombus and blood are separated, allowing the thrombus to be used for subsequent pathological analysis.

[0003] However, when using a thrombus aspiration device, the mixture of thrombus and blood will enter the collection container. Sometimes, when a large amount of blood is aspirated, the collection container is easy to fill up, and changing the collection container is very inconvenient. In addition, the change process can easily cause changes in negative pressure, which makes thrombus aspiration difficult. Summary of the Invention

[0004] Purpose of the invention: This application aims to overcome the deficiencies of the prior art and provide a negative pressure suction pump for a thrombus aspiration system.

[0005] Technical solution: A negative pressure suction pump includes a control unit, a first negative pressure pump, a base, a turntable, a turntable drive unit, a collection container, a lifting frame connected to the turntable via an electric lifting rod, and multiple liquid receiving containers; the top of the collection container is equipped with an inlet pipe and an outlet pipe, and the outlet pipe and the first negative pressure pump are connected via a first connecting pipe.

[0006] Furthermore, the turntable drive unit is used to drive the turntable to rotate.

[0007] Furthermore, multiple liquid receiving containers are fixed to the lifting frame.

[0008] Furthermore, the collection container includes an upper container and a lower container; an interception unit for intercepting blood clots is installed inside the collection container.

[0009] Furthermore, the lower container is fixedly connected to the upper container.

[0010] Furthermore, the lower container is fixedly connected to the upper container in a detachable manner.

[0011] Furthermore, the upper container and the lower container are sealed together by screwing on a threaded connection.

[0012] Furthermore, the top of the upper container has a motor mounting housing, and a filter motor is installed inside the motor mounting housing. The interception unit includes a rotating plate, a first annular filter, and a second annular filter surrounding the first annular filter. Both the first annular filter and the second annular filter are installed at the rotating plate.

[0013] Furthermore, a rotating shaft driven by a filter motor is fixed to the rotating plate.

[0014] Furthermore, a bearing is installed between the rotating plate shaft and the upper container.

[0015] Furthermore, the pore size of the second annular filter is smaller than that of the first annular filter.

[0016] Therefore, if a blood clot leaks out from the first annular filter, it can be intercepted by the second annular filter.

[0017] Furthermore, the lower container includes a lower surrounding plate, a hopper, and a liquid discharge pipe.

[0018] Furthermore, the liquid receiving container includes a circular bottom plate, a surrounding shell, a top plate, and a liquid receiving pipe fixedly connected to the top plate. The liquid receiving pipe can be inserted into the lower liquid pipe, and the liquid receiving pipe has a sealing sleeve surrounding the liquid receiving pipe.

[0019] Furthermore, the upper surrounding plate is an annular cylindrical shape.

[0020] Furthermore, the hopper is fixedly connected to the lower surrounding plate and is in the shape of an inverted frustum.

[0021] Furthermore, the liquid outlet pipe is fixedly connected to the hopper.

[0022] Furthermore, the surrounding shell is fixedly connected to the circular base plate and is in the shape of a ring cylinder.

[0023] Furthermore, the top plate is fixedly connected to the surrounding shell and is in the shape of an inverted frustum.

[0024] The inverted frustum-shaped design of the top plate ensures that if blood leaks from the drain pipe, it will fall onto the top plate and not contaminate other areas.

[0025] Furthermore, it also includes a second negative pressure pump; the lower liquid pipe has a first annular protrusion and a first abutting ring, the first annular protrusion is connected to a first sealing plug that abuts against the first abutting ring via a first spring, the lower liquid pipe is also connected to a limiting sleeve via multiple radial rods, one of which has an air extraction channel communicating with the space inside the limiting sleeve, the limiting sleeve is also fixedly connected to an air extraction pipe, the air extraction pipe is connected to the second negative pressure pump via a second connecting pipe; the liquid receiving pipe has a second annular protrusion and a second abutting ring, the second annular protrusion is connected to a second sealing plug via a second spring, the second sealing plug is fitted with an insertion tube that can be inserted into the limiting sleeve, the insertion tube has... There are multiple strip-shaped channels; a first pressure sensor is installed at the collection container, and a second pressure sensor is installed at the suction pipe; the liquid inlet pipe and the liquid outlet pipe can be in a first insertion state, a second insertion state, and a third insertion state. In the first insertion state, the inlet pipe is inserted into the limiting sleeve, and both the first and second sealing plugs are in a closed state; in the second insertion state, the end of the inlet pipe abuts against the first sealing plug, the first sealing plug is in a closed state, and the second sealing plug is in an open state; in the third insertion state, the end of the inlet pipe abuts against the first sealing plug, the first sealing plug is in an open state, and the second sealing plug is in an open state.

[0026] The first spring requires more force to be pressed and deformed compared to the second spring. Therefore, when the insertion tube contacts the first sealing plug, the second sealing plug moves downwards first, thus opening the container. As the receiving container continues to rise, the first spring is pressed down with even greater force, causing the first sealing plug to be pushed upwards, thus opening the container.

[0027] Furthermore, the air extraction channel can be connected to the strip-shaped channel.

[0028] Furthermore, the number of the strip-shaped through slots is greater than or equal to four, and they are distributed in a ring with equal spacing.

[0029] Preferably, the number of the strip-shaped through slots is greater than or equal to 8.

[0030] Thus, when the tube is inserted into the limiting sleeve and abuts against the first sealing plug, the air extraction channel is connected to at least one strip-shaped through groove.

[0031] Furthermore, the first air pressure sensor is installed at the circular top plate.

[0032] Furthermore, a first valve is installed at the air outlet pipe.

[0033] Furthermore, a second valve is installed at the extraction pipe.

[0034] Furthermore, both the first and second valves are solenoid valves, which are controlled by the control unit.

[0035] Furthermore, it also includes a touchscreen, which is connected to the control unit.

[0036] Furthermore, the first sealing plug has a first frustoconical abutment surface, and the first abutment ring has a second frustoconical abutment surface capable of abutting the first frustoconical abutment surface.

[0037] Thus, the first sealing plug and the first abutting ring can achieve a better seal.

[0038] Furthermore, the second sealing plug has a third frustoconical abutment surface, and the second abutment ring has a fourth frustoconical abutment surface that is capable of abutting the third frustoconical abutment surface.

[0039] Thus, the second sealing plug and the second abutting ring can achieve a better seal.

[0040] Furthermore, both the receiving container and the collecting container are made of transparent material.

[0041] This makes it easier to align and observe the interior.

[0042] Furthermore, the lifting ring has a first mounting groove and a second mounting groove, wherein a light emitter is installed in the first mounting groove and a light receiver is installed in the second mounting groove.

[0043] Therefore, the light emitter and light receiver can more easily detect whether the blood in the liquid receiving container is about to be full, thus facilitating the replacement of the liquid receiving container.

[0044] Furthermore, the lifting frame includes a lifting plate and multiple lifting rings connected to the lifting plate. The multiple lifting rings are distributed in a ring at equal intervals. The lifting rings have internal threads, the liquid receiving container has external threads that can mate with the internal threads, and the liquid receiving container has an annular limiting plate that can abut against the lifting rings.

[0045] This makes it convenient to install the liquid receiving container at the lifting frame, and the lifting frame can then lift and lower it.

[0046] Furthermore, the turntable has multiple limiting cylinders distributed in a ring at equal intervals. The number of limiting cylinders and liquid receiving containers are equal and correspond one-to-one. Each liquid receiving container is inserted into a limiting cylinder. The turntable is equipped with a support spring whose top end can abut against the liquid receiving container.

[0047] Furthermore, the support spring is not connected to the liquid receiving container.

[0048] This allows for limiting and supporting the lifting and lowering of the liquid container.

[0049] Furthermore, it also includes a shielding part, which includes a plurality of surrounding rings distributed at equal intervals in a ring shape and a plurality of connecting seats distributed at equal intervals in a ring shape. The surrounding rings and connecting seats are alternately distributed, and a connecting seat is connected between two adjacent surrounding rings. The connecting seat has a connecting groove, and the surrounding ring has two notches communicating with the connecting groove. The surrounding ring has a sealing ring that can abut against the liquid receiving container.

[0050] Therefore, when changing the liquid receiving container, even if a small amount of blood drips, it will fall onto the shield and will not contaminate other parts. In addition, the shield is easy to disassemble and clean.

[0051] Furthermore, both the surrounding ring and the connecting seat have three.

[0052] Furthermore, the sealing ring is made of rubber material.

[0053] Furthermore, the suction pipe passes through the lower liquid pipe and the lower surrounding plate.

[0054] Furthermore, both the first connecting pipe and the second connecting pipe are flexible hoses.

[0055] Furthermore, the outer side of the sealing sleeve can abut against the inner side of the lower liquid pipe.

[0056] This allows for a seal between the liquid inlet tube and the liquid outlet tube when the inlet tube is inserted into the outlet tube.

[0057] Furthermore, the upper container includes a circular top plate and an annular cylindrical upper surrounding plate fixedly connected to the circular top plate, and the feed pipe and the air outlet pipe are both installed at the circular top plate.

[0058] Furthermore, the collection container is installed on the base via a lifting mechanism. The lifting mechanism includes a lifting seat connected to the collection container, an L-shaped frame fixed to the base, a lead screw bearing installed on the base, a lead screw motor installed on the L-shaped frame, a lead screw connecting the lead screw motor and the lead screw bearing, and a vertical guide rail fixed to the L-shaped frame. The lifting seat has a threaded hole that mates with the lead screw and a vertical groove that mates with the vertical guide rail.

[0059] Furthermore, the lifting seat is connected to the lower surrounding plate.

[0060] Furthermore, the limiting cylinder is an annular cylindrical shape.

[0061] Furthermore, the support spring can support the liquid receiving container, and the support spring and the liquid receiving container can be separated.

[0062] Furthermore, the number of the limiting cylinder, the lifting ring, and the liquid receiving container are all three.

[0063] Furthermore, the base has an internal mounting cavity, and the turntable drive unit is a drive motor installed in the internal mounting cavity, and the turntable is capable of rotating relative to the base.

[0064] Furthermore, the turntable is connected to a turntable shaft driven by a drive motor, and a shaft bearing is connected between the turntable shaft and the base.

[0065] Furthermore, the base has an annular groove, and the turntable has a slider that mates with the annular groove.

[0066] This makes the rotation of the turntable more stable.

[0067] Beneficial effects: The negative pressure suction pump of this application can be used for thrombus aspiration. Furthermore, since the receiving container is replaceable, there is sufficient volume to hold the mixture of thrombus and blood at the aspiration site, even when a large amount of blood is aspirated during surgery.

[0068] During the replacement of multiple liquid receiving containers, the negative pressure can be kept stable, thus avoiding the inconvenience caused to the aspiration operation by the replacement operation.

[0069] It allows for better separation of thrombi, making it easier to remove them for subsequent pathological analysis. Attached Figure Description

[0070] Figure 1 Schematic diagram of a negative pressure suction pump;

[0071] Figure 2 This is a magnified view of region A;

[0072] Figure 3 This is a magnified view of region B.

[0073] Figure 4 This is a schematic diagram showing the separation of the negative pressure suction pump components;

[0074] Figure 5 This is a magnified view of region C;

[0075] Figure 6 This is a magnified view of region D;

[0076] Figure 7 This is a schematic diagram of the negative pressure suction pump in the first plug-in state;

[0077] Figure 8 This is a magnified view of region E.

[0078] Figure 9 This is a schematic diagram of the negative pressure suction pump in the second insertion state;

[0079] Figure 10 This is a magnified view of region F;

[0080] Figure 11 This is a magnified view of region G;

[0081] Figure 12 This is a schematic diagram of the negative pressure suction pump in the third plug-in state;

[0082] Figure 13 This is a magnified view of region H;

[0083] Figure 14 This is a schematic diagram of the negative pressure pump from another angle in the first plug-in state;

[0084] Figure 15 This is a schematic diagram of the negative pressure pump from another angle in the second plug-in state;

[0085] Figure 16 This is a schematic diagram of the negative pressure pump from another angle in the second plug-in state.

[0086] Figure 17 A schematic diagram showing how an electric lifting rod drives the lifting frame to descend, separating the liquid receiving pipe and the liquid lowering pipe, allowing the turntable to rotate.

[0087] To illustrate the internal structure Figures 7-16 In the middle, a portion of the collection container and one of the receiving containers were cut off to demonstrate the connection between the discharge tube and the receiving tube; Figure 14-16 In the middle, the obstruction unit is removed to make the connection between the liquid inlet pipe and the liquid outlet pipe clearer. Detailed Implementation

[0088] Attached reference numerals: 1. Base; 2. Turntable; 3. Limiting cylinder; 3.1. Support spring;

[0089] 4.1 Electric lifting rod; 4.2 Lifting plate; 4.3 Lifting ring; 4.4 First mounting groove; 4.5 Second mounting groove; 4.6 Internal thread;

[0090] 5.1 L-shaped frame; 5.2 Vertical guide rail; 5.3 Lead screw; 5.4 Lead screw bearing; 5.5 Lifting seat; 5.6 Lead screw motor;

[0091] 6.1 Enclosing ring; 6.2 Connecting seat; 6.3 Sealing ring;

[0092] 7.1 Liquid receiving container; 7.1.1 Surrounding shell; 7.1.2 Top plate; 7.2 Circular limiting plate; 7.3 Liquid receiving tube; 7.4 Second abutting ring; 7.4.1 Fourth frustoconical abutting surface; 7.5 Second annular protrusion; 7.6 Second spring; 7.7 Second sealing plug; 7.7.1 Third frustoconical abutting surface; 7.8 Insert tube; 7.9 Strip groove; 7.10 Sealing sleeve;

[0093] 8.1 Upper container; 8.1.1 Circular top plate; 8.1.2 Upper surrounding plate; 8.1.3 Motor mounting housing; 8.1.4 Filter motor; 8.1.5 Rotating plate shaft; 8.1.6 Rotating plate; 8.1.7 First annular filter; 8.1.8 Second annular filter; 8.1.9 Feed pipe; 8.1.10 Air outlet pipe; 8.1.11 First air pressure sensor;

[0094] 8.2 Lower container; 8.2.1 Lower surrounding plate; 8.2.2 Hopper; 8.3 First annular protrusion; 8.4 First abutting ring; 8.4.1 Second frustoconical abutting surface; 8.5 First sealing plug; 8.5.1 First frustoconical abutting surface; 8.6 First spring; 8.7 Radial rod; 8.7.1 Air extraction channel; 8.7.2 Limiting sleeve; 8.8 Lower liquid pipe; 8.9 Air extraction pipe; 8.10 Second pressure sensor;

[0095] 9.1 First negative pressure pump; 9.2 Second negative pressure pump;

[0096] As shown in the figure, a negative pressure suction pump for a thrombus aspiration system includes a control unit, a first negative pressure pump 9.1, a base 1, a turntable 2, a turntable drive unit for driving the turntable 2 to rotate, a collection container, a lifting frame connected to the turntable 2 via an electric lifting rod 4.1, and multiple liquid receiving containers 7.1 fixed to the lifting frame. The top of the collection container is equipped with an inlet pipe 8.1.9 and an outlet pipe 8.1.10, which are connected to the first negative pressure pump 9.1 via a first connecting pipe. The collection container includes an upper container 8.1 and a lower container 8.2 that is detachably and fixedly connected to the upper container 8.1. The collection container contains an interception unit for intercepting thrombi. The top of the upper container 8.1 has a motor mounting housing 8.1.3, and a filter motor 8.1.4 is installed inside the motor mounting housing 8.1.3. The interception unit includes a rotating plate 8.1.6, a first annular filter 8.1.7, and a second annular filter 8.1.8 surrounding the first annular filter 8.1.7. The first annular filter 8.1.7 and the second annular filter 8.1.8 are both installed on the rotating plate 8.1.6. A rotating plate shaft 8.1.5 driven by the filter motor 8.1.4 is fixed on the rotating plate 8.1.6. The lower container 8.2 includes a cylindrical lower enclosure plate 8.2.1, an inverted frustum-shaped hopper 8.2.2 fixedly connected to the lower enclosure plate 8.2.1, and a liquid receiving pipe 8.8 fixedly connected to the hopper 8.2.2; the liquid receiving container 7.1 includes a circular bottom plate, a cylindrical enclosure shell 7.1.1 fixedly connected to the circular bottom plate, an inverted frustum-shaped top plate 7.1.2 fixedly connected to the enclosure shell 7.1.1, and a liquid receiving pipe 7.3 fixedly connected to the top plate 7.1.2. The liquid receiving pipe 7.3 can be inserted into the liquid receiving pipe 8.8, and the liquid receiving pipe 7.3 has a sealing sleeve 7.10 surrounding the liquid receiving pipe 7.3.

[0097] The negative pressure suction pump also includes a second negative pressure pump 9.2; the lower liquid pipe 8.8 has a first annular protrusion 8.3 and a first abutting ring 8.4, the first annular protrusion 8.3 is connected to a first sealing plug 8.5 that can abut against the first abutting ring 8.4 via a first spring 8.6, the lower liquid pipe 8.8 is also connected to a limiting sleeve 8.7.2 via multiple radial rods 8.7, one of the radial rods 8.7 has a suction channel 8.7.1 that communicates with the space inside the limiting sleeve 8.7.2, the limiting sleeve 8.7.2 is also fixedly connected to a suction pipe 8.9, the suction pipe 8.9 is connected to the second negative pressure pump 9.2 via a second connecting pipe; the liquid receiving pipe 7.3 has a second annular protrusion 7.5 and a second abutting ring 7.4, the second annular protrusion 7.5 is connected to a second sealing plug 7.7 via a second spring 7.6, the second sealing plug 7.7 is fitted with a device that can insert into the limiting sleeve 8.7. The tube 7.8 inside the 2 has multiple strip-shaped through grooves 7.9; a first pressure sensor 8.1.11 is installed at the collection container, and a second pressure sensor 8.10 is installed at the suction pipe 8.9; the liquid outlet pipe 8.8 and the liquid receiving pipe 7.3 can be in a first insertion state, a second insertion state, and a third insertion state. In the first insertion state, the tube 7.8 is inserted into the limiting sleeve 8.7.2, and both the first sealing plug 8.5 and the second sealing plug 7.7 are in a closed state; in the second insertion state, the end of the tube 7.8 abuts against the first sealing plug 8.5, the first sealing plug 8.5 is in a closed state, and the second sealing plug 7.7 is in an open state; in the third insertion state, the end of the tube 7.8 abuts against the first sealing plug 8.5, the first sealing plug 8.5 is in an open state, and the second sealing plug 7.7 is in an open state.

[0098] The first sealing plug 8.5 has a first frustoconical abutment surface 8.5.1, and the first abutment ring 8.4 has a second frustoconical abutment surface 8.4.1 capable of abutting the first frustoconical abutment surface 8.5.1; the second sealing plug 7.7 has a third frustoconical abutment surface 7.7.1, and the second abutment ring 7.4 has a fourth frustoconical abutment surface 7.4.1 capable of abutting the third frustoconical abutment surface 7.7.1. Both the liquid receiving container and the collection container are made of transparent material; the lifting ring 4.3 has a first mounting groove 4.4 and a second mounting groove 4.5, where a light emitter is installed in the first mounting groove 4.4 and a light receiver is installed in the second mounting groove 4.5. The lifting frame includes a lifting plate 4.2 and multiple lifting rings 4.3 connected to the lifting plate 4.2. The multiple lifting rings 4.3 are distributed in a ring at equal intervals. Each lifting ring 4.3 has an internal thread 4.6. The liquid receiving container 7.1 has an external thread that can mate with the internal thread 4.6. The liquid receiving container 7.1 has a ring-shaped limiting plate 7.2 that can abut against the lifting ring 4.3. The turntable 2 has multiple limiting cylinders 3 distributed in a ring at equal intervals. The number of limiting cylinders 3 and liquid receiving containers 7.1 are equal and correspond one-to-one. Each liquid receiving container 7.1 is inserted into a limiting cylinder 3. The turntable 2 is equipped with a support spring 3.1 whose top end can abut against the liquid receiving container 7.1.

[0099] The negative pressure suction pump also includes a shielding part, which includes a plurality of annularly spaced surrounding rings 6.1 and a plurality of annularly spaced connecting seats 6.2. The surrounding rings 6.1 and connecting seats 6.2 are alternately distributed, and a connecting seat 6.2 is connected between two adjacent surrounding rings 6.1. The connecting seat has a connecting groove, and the surrounding ring has two notches communicating with the connecting groove. The surrounding ring has a sealing ring 6.3 that can abut against the liquid receiving container 7.1. The upper container 8.1 includes a circular top plate 8.1.1 and a cylindrical upper surrounding plate 8.1.2 fixedly connected to the circular top plate 8.1.1. The feed pipe 8.1.9 and the air outlet pipe 8.1.10 are both installed at the circular top plate 8.1.1. The collection container is installed at the base 1 via a lifting mechanism. The lifting mechanism includes a lifting seat 5.5 connected to the collection container, an L-shaped frame 5.1 fixed at the base 1, a lead screw bearing 5.4 installed at the base 1, a lead screw motor 5.6 installed at the L-shaped frame 5.1, a lead screw 5.3 connecting the lead screw motor 5.6 and the lead screw bearing 5.4, and a vertical guide rail 5.2 fixed at the L-shaped frame 5.1. The lifting seat 5.5 has a threaded hole that mates with the lead screw 5.2 and a vertical groove that mates with the vertical guide rail 5.2.

[0100] The negative pressure suction pump of this application allows for the separation of the upper and lower containers of the collection container, and the receiving container can be removed from the lifting ring. This facilitates convenient and flexible use and installation. After normal installation, during use, the collection container is evacuated by the first negative pressure pump through the vent pipe, creating negative pressure. This negative pressure allows the thrombus in the blood vessel to be aspirated into the suction catheter. During normal use, a receiving container is located below the collection container, and the receiving tube of the receiving container is inserted into the lower tube of the collection container, with the tube abutting against the first sealing plug. The lower tube and the receiving tube are in a third-connection state, with both the first and second sealing plugs open. Therefore, when the mixture of thrombus and blood enters the collection container, the thrombus is intercepted by the interception unit. Under centrifugal force and the interception of two filters, the thrombus is more effectively intercepted. The blood after thrombus separation flows from the lower tube into the receiving tube and into the receiving container. Furthermore, due to the presence of the light emitter and receiver, the liquid level in the receiving container can be detected when it reaches the height of the light emitter, indicating that the receiving container is almost full. At this time, driven by the electric lifting rod, the lifting frame can be lowered, allowing the receiving tube to detach from the lower liquid tube, and the first and second sealing plugs will re-seal. Then, the turntable rotates (during this process, the aspiration operation can be paused or continued; if it continues, the aspirated blood can be temporarily stored in the collection container), placing the unused receiving container below the collection container. Then, the electric push rod raises the lifting frame, and the receiving tube is inserted into the lower liquid tube, with the tube abutting against the first sealing plug, causing the second sealing plug to open (at this time, the first sealing plug is still closed, and the lower liquid tube...). (With the receiving tube in the second insertion state), the second negative pressure pump is activated to evacuate the receiving container, thus creating a negative pressure in the receiving container. When the pressure inside the receiving container equals the air pressure inside the collection container, the electric push rod causes the lifting frame to continue rising, thereby opening the first sealing plug (the lower tube and the receiving tube are in the third insertion state). This allows the blood in the collection container to be discharged into the receiving container. Since the air pressure in the collection container and the receiving container is approximately equal when the first sealing plug is opened, sudden pressure changes will not cause inconvenience to the aspiration operation.

[0101] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes and modifications can be made to the present invention without departing from the scope defined by the claims.

Claims

1. A negative pressure suction pump for a thrombus aspiration system, characterized in that, It includes a control unit, a first negative pressure pump, a base, a turntable, a turntable drive unit, a collection container, a lifting frame connected to the turntable via an electric lifting rod, and multiple liquid receiving containers; the top of the collection container is equipped with an inlet pipe and an outlet pipe, and the outlet pipe is connected to the first negative pressure pump via a first connecting pipe; The collection container includes an upper container and a lower container; the collection container is equipped with an interception unit for intercepting blood clots; The lower container includes a lower surrounding plate, a hopper, and a liquid receiving pipe; the liquid receiving container includes a circular bottom plate, a surrounding shell, a top plate, and a liquid receiving pipe fixedly connected to the top plate, the liquid receiving pipe being able to be inserted into the lower liquid receiving pipe, and the liquid receiving pipe having a sealing sleeve surrounding the liquid receiving pipe. It also includes a second negative pressure pump; the liquid outlet has a first annular protrusion and a first abutting ring, the first annular protrusion is connected to a first sealing plug that abuts against the first abutting ring via a first spring, the liquid outlet is also connected to a limit sleeve via multiple radial rods, one of the radial rods has an air extraction channel communicating with the space inside the limit sleeve, the limit sleeve is also fixedly connected to an air extraction pipe, the air extraction pipe is connected to the second negative pressure pump via a second connecting pipe; the liquid inlet has a second annular protrusion and a second abutting ring, the second annular protrusion is connected to a second sealing plug via a second spring, the second sealing plug is fitted with an insertion tube that can be inserted into the limit sleeve, the insertion tube has multiple A strip-shaped through-slot; a first pressure sensor is installed at the collection container, and a second pressure sensor is installed at the suction pipe; the liquid inlet pipe and the liquid outlet pipe can be in a first insertion state, a second insertion state, and a third insertion state. In the first insertion state, the inlet pipe is inserted into the limiting sleeve, and both the first and second sealing plugs are in a closed state; in the second insertion state, the end of the inlet pipe abuts against the first sealing plug, the first sealing plug is in a closed state, and the second sealing plug is in an open state; in the third insertion state, the end of the inlet pipe abuts against the first sealing plug, the first sealing plug is in an open state, and the second sealing plug is in an open state.

2. The negative pressure suction pump for the thrombus aspiration system according to claim 1, characterized in that, The top of the upper container has a motor mounting housing, and a filter motor is installed inside the motor mounting housing. The interception unit includes a rotating plate, a first annular filter, and a second annular filter surrounding the first annular filter. Both the first annular filter and the second annular filter are installed on the rotating plate.

3. The negative pressure suction pump for the thrombus aspiration system according to claim 1, characterized in that, The first sealing plug has a first frustoconical abutment surface, and the first abutment ring has a second frustoconical abutment surface capable of abutting the first frustoconical abutment surface; the second sealing plug has a third frustoconical abutment surface, and the second abutment ring has a fourth frustoconical abutment surface capable of abutting the third frustoconical abutment surface.

4. The negative pressure suction pump for the thrombus aspiration system according to claim 1, characterized in that, The lifting frame includes a lifting plate and multiple lifting rings connected to the lifting plate. The multiple lifting rings are distributed in a ring at equal intervals. Each lifting ring has an internal thread, and each liquid receiving container has an external thread that can mate with the internal thread. The liquid receiving container has an annular limiting plate that can abut against the lifting ring. Both the liquid receiving container and the collection container are made of transparent material. Each lifting ring has a first mounting groove and a second mounting groove. A light emitter is installed in the first mounting groove, and a light receiver is installed in the second mounting groove.

5. The negative pressure suction pump for the thrombus aspiration system according to claim 1, characterized in that, The turntable has multiple limiting cylinders distributed in a ring at equal intervals. The number of limiting cylinders and liquid receiving containers are equal and correspond one-to-one. Each liquid receiving container is inserted into a limiting cylinder. The turntable is equipped with a support spring whose top end can abut against the liquid receiving container.

6. The negative pressure suction pump for the thrombus aspiration system according to claim 1, characterized in that, It also includes a shielding part, which includes a plurality of surrounding rings distributed at equal intervals in a ring shape and a plurality of connecting seats distributed at equal intervals in a ring shape. The surrounding rings and connecting seats are alternately distributed, and a connecting seat is connected between two adjacent surrounding rings. The connecting seat has a connecting groove, and the surrounding ring has two notches communicating with the connecting groove. The surrounding ring has a sealing ring that can abut against the liquid receiving container.

7. The negative pressure suction pump for the thrombus aspiration system according to claim 1, characterized in that, The upper container includes a circular top plate and an annular cylindrical upper surrounding plate fixedly connected to the circular top plate. The feed pipe and the air outlet pipe are both installed at the circular top plate. The collection container is installed at the base via a lifting mechanism. The lifting mechanism includes a lifting seat connected to the collection container, an L-shaped frame fixed at the base, a lead screw bearing installed at the base, a lead screw motor installed at the L-shaped frame, a lead screw connecting the lead screw motor and the lead screw bearing, and a vertical guide rail fixed at the L-shaped frame. The lifting seat has a threaded hole that mates with the lead screw and a vertical groove that mates with the vertical guide rail.

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