Intelligent pressure feedback peripheral vascular thrombectomy and autologous blood reinfusion system

Abstract

The application relates to the technical field of medical devices, and discloses a smart pressure feedback type peripheral blood vessel thrombus removing and autologous blood returning system, which comprises a negative pressure pump, a one-way valve symmetrically arranged at one end of a negative pressure pump cabin, a blood storage bag arranged outside the one-way valve at the outlet end of the negative pressure pump cabin, a separation mechanism arranged outside the one-way valve at the inlet section of the negative pressure pump, and a bubble discharging mechanism arranged in the separation mechanism, wherein the bubble discharging mechanism is used for discharging bubbles from blood; the separation mechanism comprises a shell, a sliding groove arranged at the top of the shell, a sliding block arranged in the sliding groove, the sliding block moving along the sliding groove, the sliding groove limiting the moving range of the sliding block, and a reset spring arranged on the side of the sliding block close to the negative pressure pump. The filter component is separated into different working spaces through the separation mechanism, different working spaces can be switched, and the situation that the whole device cannot be used due to blockage of a single filter component is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to an intelligent pressure feedback peripheral vascular thrombus removal and autologous blood transfusion system. BACKGROUND

[0002] The intelligent pressure feedback peripheral vascular thrombus removal and autologous blood transfusion system combines advanced sensing technology and intelligent control algorithm, and can accurately perceive the pressure change in the negative pressure pump. When removing thrombus, the pressure of the feedback negative pressure pump is fed back, which can efficiently remove thrombus and avoid damaging the blood vessel wall. At the same time, the system has the function of autologous blood transfusion, which recovers blood during the process of removing thrombus, and then transfuses the filtered blood back to the patient, reducing blood waste and the risk of allogeneic blood transfusion.

[0003] The traditional peripheral vascular thrombus removal and autologous blood transfusion system is widely used in the medical field, but due to the limitations of its structure and working principle, there are some problems that cannot be ignored. Among them, thrombus is easy to accumulate and block the filter assembly. During the process of removing thrombus, a large amount of thrombus fragments is sucked out with blood, and these fragments are easy to accumulate at the filter assembly. Once too much is accumulated, the filter channel will be narrowed or even completely blocked, thereby affecting the filtering effect. In addition, air bubbles are easy to mix in the extracted blood. After the air bubbles mix in the blood, they will be transfused into the patient's body with the blood. These air bubbles may block small blood vessels after entering the blood vessels, causing local tissue ischemia and hypoxia, and even endangering the patient's life. Air bubbles can also interfere with the normal flow of blood, affecting the efficiency and safety of blood transfusion. SUMMARY

[0004] In view of the problems in the prior art that the blood transfusion system lacks the problem of dealing with thrombus blockage of the equipment, and the problem of discharging air bubbles from the blood, an intelligent pressure feedback peripheral vascular thrombus removal and autologous blood transfusion system is proposed.

[0005] The purpose is to enable the blood transfusion system to deal with the blockage of the equipment by thrombus, and to discharge the air bubbles from the sucked blood.

[0006] The technical scheme of the present application is an intelligent pressure feedback peripheral vascular thrombus removal and autologous blood transfusion system, which comprises a negative pressure pump, a one-way valve symmetrically arranged at one end of the negative pressure pump cabin, a blood storage bag arranged outside the one-way valve at the outlet end of the negative pressure pump cabin, a separation mechanism arranged outside the one-way valve at the inlet section of the negative pressure pump, and a bubble discharging mechanism arranged inside the separation mechanism, the bubble discharging mechanism being used for discharging air bubbles from the blood.

[0007] The separation mechanism comprises a shell, a sliding groove arranged on the top of the shell, a sliding block arranged in the sliding groove and moving along the sliding groove, the sliding groove limiting the moving range of the sliding block, a reset spring arranged on the side of the sliding block close to the negative pressure pump and making the sliding block keep the tendency of moving away from the negative pressure pump, both ends of the reset spring being fixedly connected with the sliding block and the sliding groove respectively, a separation cabin arranged in the shell, a driving groove arranged on the outside of the separation cabin, the separation cabin being able to rotate when the sliding block extrudes the driving groove, the bottom of the sliding block being slidably connected with the inner wall of the driving groove, the corners of the side walls of the driving groove being staggered at the turning positions, a filter plate arranged on the inner wall of the separation cabin, the filter plate intercepting thrombus in blood, a screw cap arranged on the side of the shell away from the negative pressure pump and sealing the shell after being screwed tightly, and a docking unit arranged in the screw cap.

[0008] Further, the bottom of the sliding block is provided with a driving rod, and the bottom end of the driving rod is slidably connected with the driving groove.

[0009] Further, the screw cap is provided with a medicine injection port at the center of the side away from the negative pressure pump, and the screw cap and the medicine injection port are provided with a suction port at the edge of the same side.

[0010] Further, the docking unit comprises a connecting head arranged on the screw cap close to the suction port, an ejection spring arranged at the end of the connecting head away from the negative pressure pump and fixedly connected with the screw cap and the connecting head at both ends, a hole plate arranged on the side of the separation cabin close to the screw cap, and three annular array through holes arranged on the side of the hole plate close to the screw cap, and the end of the connecting head close to the hole plate is in abutment with the aligned through holes.

[0011] Further, the end of the connecting head close to the hole plate is an outward convex arc end face, the side of the through hole close to the connecting head is provided with an annular groove, and the annular groove is matched with the outward convex arc end face of the connecting head.

[0012] Further, the bubble discharging mechanism comprises a sedimentation chamber arranged on the side of the shell away from the separation cabin, a clockwork arranged on the side of the sedimentation chamber close to the negative pressure pump, a gear ring arranged on the outer end of the clockwork, a driving wheel arranged on the top of the gear ring, the side of the driving wheel away from the sedimentation chamber being rotatably connected with the shell, a driven wheel arranged on the bottom of the driving wheel, an eccentric block arranged on the side of the driven wheel close to the sedimentation chamber, a disc arranged on the side of the driven wheel away from the sedimentation chamber, a knob arranged on the bottom of the side of the shell close to the negative pressure pump, and a pressing block arranged on the side of the knob close to the sedimentation chamber.

[0013] Further, the middle part of the knob is provided with a screw thread, the connection position of the shell and the knob is provided with a screw hole, and the screw hole is threadedly connected with the knob.

[0014] Further, the side of the gear ring close to the negative pressure pump is provided with a limiting groove, and a limiting ring is arranged on the inner wall of the side of the shell close to the negative pressure pump and rotatably connected with the limiting groove.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] 1. By setting a separation mechanism, the filter components are separated into different working spaces, and different working spaces can be switched. When one of the filter components is blocked due to thrombus accumulation, the system can automatically switch to another unblocked working space to continue blood filtration and return, which avoids the situation that the entire device cannot be used due to the blockage of a single filter component, ensures the continuity and stability of the blood return process, and through switching the working space, the system can continuously and effectively remove thrombus while ensuring normal blood return, thereby improving the reliability and practicality of the device in treating peripheral vascular thrombus.

[0017] 2. By setting a bubble removal mechanism, air bubbles in the blood are treated by vibration. When the blood flows through the mechanism, the bubble removal mechanism vibrates, which changes the force state of the air bubbles in the blood, promotes the air bubbles to float up, and the relative position of the air bubbles to the blood changes under the action of vibration, gradually moving to the surface of the liquid. As the air bubbles continue to float up, they gather in the upper layer of the blood and burst. In this way, the bubble removal mechanism accelerates the air bubble removal process in the blood, reducing the possibility of air bubbles entering the patient's blood vessels, which helps to ensure the safety of blood return, avoids adverse consequences caused by air bubbles in the blood vessels, ensures that the returned blood is more pure, and improves the effect of blood return treatment.

[0018] 3. By setting a docking unit, the blood is accurately guided into the correct working area of the filter component during blood extraction. The docking unit is located at the connection between the blood extraction pipeline and the filter component, and its design can achieve accurate docking. When the blood extraction pipeline is connected to the docking unit, the guide structure inside the docking unit guides the blood to the designated working area of the filter component. This guiding action avoids the misentry of blood into other areas, ensuring the normal flow path of blood in the filter component. Through the accurate docking and guidance of the docking unit, the system can effectively guide the blood to the working space that needs to be filtered, improving the accuracy and efficiency of blood treatment. At the same time, this also reduces the problems such as reduced filtering effect or equipment failure that may be caused by incorrect blood flow. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall three-dimensional structure of the present application;

[0020] Figure 2 is a schematic diagram of the overall structure of the separation mechanism of the present application;

[0021] Figure 3 is an exploded view of the separation mechanism of the present application;

[0022] Figure 4 The schematic diagram of the internal structure of the shell of the present application;

[0023] Figure 5 The schematic diagram of the connection between the shell and the sliding slot of the present application;

[0024] Figure 6 The schematic diagram of the connection between the sliding block and the sliding slot of the present application;

[0025] Figure 7 The schematic diagram of the connection between the orifice plate and the separation cabin of the present application;

[0026] Figure 8 The schematic diagram of the connection between the filter plate and the separation cabin of the present application;

[0027] Figure 9 The schematic diagram of the structure of the separation cabin and the orifice plate of the present application;

[0028] Figure 10 The schematic diagram of the connection between the connector and the orifice plate of the present application;

[0029] Figure 11 The schematic diagram of the connection between the spring and the gear ring of the present application;

[0030] Figure 12 The schematic diagram of the connection between the gear ring and the driving wheel of the present application;

[0031] Figure 13 The schematic diagram of the structure of the eccentric block and the driven wheel of the present application;

[0032] Figure 14 The schematic diagram of the connection between the driven wheel and the disc of the present application.

[0033] In the figure:

[0034] 1, negative pressure pump; 2, one-way valve; 3, blood storage bag; 4, separation mechanism; 5, bubble discharge mechanism; 41, shell; 42, sliding slot; 43, sliding block; 44, return spring; 45, separation cabin; 46, driving slot; 47, filter plate; 48, screw cap; 49, connector; 410, ejection spring; 411, orifice plate; 412, flow-through hole; 51, sedimentation chamber; 52, spring; 53, gear ring; 54, driving wheel; 55, driven wheel; 56, eccentric block; 57, disc; 58, knob; 59, pressing block. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0036] Example 1, refer to Figures 1-10For the first embodiment of the application, a smart pressure feedback peripheral vascular thrombus removal and autologous blood transfusion system is provided, comprising a negative pressure pump 1, a one-way valve 2 symmetrically and fixedly connected at one end of the cabin of the negative pressure pump 1, a blood storage bag 3 fixedly connected outside the one-way valve 2 at the outlet end of the cabin of the negative pressure pump 1, further comprising a separation mechanism 4 installed outside the one-way valve 2 at the inlet section of the negative pressure pump 1, and a bubble removal mechanism 5 installed inside the separation mechanism 4, which is used to remove bubbles from the blood; the separation mechanism 4 comprises a shell 41, a sliding groove 42 fixedly connected at the top of the shell 41, a sliding block 43 slidingly connected inside the sliding groove 42, the sliding block 43 moving along the sliding groove 42, the sliding groove 42 limiting the movement range of the sliding block 43, a return spring 44 fixedly connected to the side of the sliding block 43 close to the negative pressure pump 1, the return spring 44 keeping the sliding block 43 in a tendency to move away from the negative pressure pump 1, the two ends of the return spring 44 being fixedly connected to the sliding block 43 and the sliding groove 42 respectively, a separation cabin 45 rotatably connected inside the shell 41, a drive groove 46 opened outside the separation cabin 45, the sliding block 43 pressing the drive groove 46 being able to rotate the separation cabin 45, the bottom of the sliding block 43 being slidingly connected with the inner wall of the drive groove 46, the corner positions of the drive groove 46 sidewall at the turning points being staggered with each other, a filter plate 47 fixedly connected to the inner wall of the separation cabin 45, the filter plate 47 intercepting thrombus in the blood, a screw cap 48 threadedly connected to the side of the shell 41 away from the negative pressure pump 1, the screw cap 48 being tightened to seal the shell 41, and a docking unit assembled inside the screw cap 48.

[0037] Specifically, the top of the negative pressure pump 1 is connected with a pressure sensing device, which can feedback the pressure parameter inside the negative pressure pump 1 in real time, the negative pressure pump 1 extracts thrombus and blood in the peripheral blood vessels by generating negative pressure, the one-way valve 2 is used to restrict the flow direction of the blood, the blood storage bag 3 is used to store filtered blood, the inside of the shell 41 contains working components, the sliding block 43 can be moved along the sliding groove 42 by pushing, the sliding block 43 will press the return spring 44 when moving towards the negative pressure pump 1, the return spring 44 resets the sliding block 43 after the sliding block 43 is released, the sliding block 43 rotates the separation cabin 45 by pressing the inner wall of the drive groove 46 while moving again, the separation cabin 45 rotates the filter plate 47 and the hole plate 411 together, the sliding block 43 moves to the maximum stroke and resets once towards the negative pressure pump 1, which can drive the separation cabin 45 to rotate one hundred and twenty degrees, and the screw cap 48 cooperates with the shell 41 to seal the inside of the shell 41.

[0038] Referring to Figure 6 and Figure 7 the bottom of the sliding block 43 is provided with a drive rod, the bottom end of the drive rod being slidingly connected with the drive groove 46.

[0039] Specifically, the slider 43 moves while driving the driving rod, and the driving rod is in sliding connection with the driving slot 46, so that the driving rod is squeezed against the inner wall of the driving slot 46 when moving again, so that the separation cabin 45 rotates.

[0040] With reference to Figures 1-4 The rotary cover 48 is provided with a medicine injection port at the middle position away from the negative pressure pump 1, and the rotary cover 48 is provided with a suction port at the edge on the same side as the medicine injection port.

[0041] Specifically, the medicine can be injected into the shell 41 through the medicine injection port, and the blood can be drawn from the patient's body through the suction port connected with the catheter.

[0042] With reference to Figures 1-10 The docking unit includes a connecting head 49 provided in the rotary cover 48 close to the suction port, an ejection spring 410 fixedly connected to the connecting head 49 away from the negative pressure pump 1, both ends of the ejection spring 410 being fixedly connected with the rotary cover 48 and the connecting head 49, a hole plate 411 fixedly connected to the separation cabin 45 close to the rotary cover 48, and three annular array flow-through holes 412 provided in the hole plate 411 close to the rotary cover 48, one end of the connecting head 49 close to the hole plate 411 abutting against the aligned flow-through holes 412.

[0043] Specifically, the connecting head 49 moves towards the negative pressure pump 1 under the action of the ejection spring 410, and stops after moving to the maximum stroke under the constraint of the suction port, and the hole plate 411 divides the filter plate 47 into three different working spaces, and the drawn blood enters the space between the hole plate 411 and the filter plate 47 through the flow-through holes 412.

[0044] With reference to Figure 10 One end of the connecting head 49 close to the hole plate 411 is an outer convex arc end face, and the side of the flow-through hole 412 close to the connecting head 49 is provided with an annular groove, and the annular groove is matched with the outer convex arc end face of the connecting head 49.

[0045] Specifically, when the hole plate 411 rotates, the annular groove will squeeze the outer convex arc end face of the connecting head 49, so that the connecting head 49 moves away from the negative pressure pump 1, and when the hole plate 411 rotates one hundred and twenty degrees, the connecting head 49 is inserted into the annular groove again.

[0046] Embodiment 2, with reference to Figures 1-14For the second embodiment of the present application, which is different from the first embodiment, the bubble-removing mechanism 5 comprises a settling chamber 51 fixedly connected to the outer shell 41 on the side away from the separation cabin 45, a spring 52 fixedly connected to the settling chamber 51 on the side close to the negative pressure pump 1, a gear ring 53 fixedly connected to the outer end of the spring 52, a driving wheel 54 meshingly connected to the top of the gear ring 53, the driving wheel 54 being rotatably connected to the outer shell 41 on the side away from the settling chamber 51, a driven wheel 55 meshingly connected to the bottom of the driving wheel 54, an eccentric block 56 fixedly connected to the settling chamber 51 on the side close to the driven wheel 55, a disc 57 fixedly connected to the driven wheel 55 on the side away from the settling chamber 51, a knob 58 threadedly connected to the bottom of the outer shell 41 on the side close to the negative pressure pump 1, and a pressing block 59 fixedly connected to the knob 58 on the side close to the settling chamber 51.

[0047] Specifically, the blood filtered by the filter plate 47 enters the settling chamber 51, the bubbles carried in the blood float upwards to the liquid surface of the blood and break, the negative pressure pump 1 preferentially extracts the blood at the bottom of the settling chamber, thus reducing the bubble content of the blood entering the interior of the negative pressure pump 1, the gear ring 53 is rotated by rotating the driving wheel, the gear ring 53 rotationally stores the power of the spring 52, the spring 52 drives the gear ring 53 to reverse after the driving wheel 54 is loosened, the gear ring 53 reverses to drive the driven wheel 55 and the eccentric block 56 to rotate, the eccentric block 56 rotates to generate vibration, the vibration is transmitted to the blood in the settling chamber 51 through the settling chamber 51 to accelerate the floating and breaking of the bubbles in the blood, thus reducing the bubble content in the blood, the knob 58 is moved towards the disc 57 by rotating the knob 58, the knob 58 drives the pressing block 59 to move at the same time, the pressing block 59 contacts the disc 57 to reduce the rotation speed of the disc 57 and the driven wheel 55 under the action of friction, the rotation speed of the driven wheel 55 and the eccentric block 56 is controlled by adjusting the contact force of the pressing block 59 and the disc 57, thus the vibration frequency is controlled, when the bubble content in the blood is high, the vibration frequency is appropriately increased to increase the bubble-removing speed, otherwise the vibration frequency is reduced to avoid excessive vibration to break the cell wall of the red blood cells in the blood.

[0048] With reference to Figure 12 and Figure 13 , the middle part of the knob 58 is provided with a thread, the connection part of the outer shell 41 and the knob 58 is provided with a screw hole, and the screw hole and the knob 58 are threadedly connected.

[0049] Specifically, the knob 58 moves along its own axis under the action of the thread while rotating, and the moving direction is controlled by changing the forward and reverse rotation of the knob 58.

[0050] With reference to Figures 1-12 , the side of the gear ring 53 close to the negative pressure pump 1 is provided with a limiting groove, and the inner wall of the side of the outer shell 41 close to the negative pressure pump 1 is provided with a limiting ring, and the limiting ring and the limiting groove are rotatably connected.

[0051] Specifically, the gear ring 53 can only rotate in place under the constraint of the limiting groove and the limiting ring. The rest of the structure is the same as that of embodiment 1.

[0052] In combination of embodiments 1-2, the working principle of the present application is as follows: the blood extraction tube is connected with the suction port, and the negative pressure pump 1 generates negative pressure, so that the thrombus in the peripheral blood vessel is extracted into the inside of the sedimentation chamber 51 together with the blood. In the process of passing through the filter plate 47, the thrombus and part of the bubbles carried by the blood are filtered. When there are more thrombus and the used filtering space is blocked, the slider 43 is moved towards the negative pressure pump 1, and after moving to the maximum stroke, it stops pushing and resets. The slider 43 drives the separation cabin 45 to rotate at the same time, and the separation cabin 45 drives the filter plate 47 and the hole plate 411 to rotate at the same time. After the hole plate 411 rotates, the flow-through hole 412 connected with the connector 49 is switched, so that the blood enters the unblocked filtering space. When the blood in the sedimentation chamber needs to be de-bubbled, the pinion 54 is used to rotate the gear ring 53, the gear ring 53 rotates to store the energy of the clockwork 52, and after the pinion 54 is released, the clockwork 52 drives the driven wheel 55 to rotate through the gear ring 53. The driven wheel 55 rotates at the same time to drive the eccentric block 56 to rotate, and the eccentric block 56 rotates at the same time to generate vibration. After the vibration is transmitted to the blood through the sedimentation chamber, it promotes the breaking and floating of the bubbles in the blood, reduces the content of the bubbles in the blood, and controls the rotation speed of the eccentric block 56 by controlling the contact force of the pressure block 59 and the disc 57 through the rotation knob 58, so that the frequency can be adjusted according to different use requirements.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A peripheral vascular thrombus removal and autologous blood transfusion system with intelligent pressure feedback, comprising a negative pressure pump (1), a one-way valve (2) symmetrically arranged at one end of the chamber of the negative pressure pump (1), and a blood storage bag (3) arranged outside the one-way valve (2) at the outlet end of the chamber of the negative pressure pump (1), characterized in that: Further comprising a separation mechanism (4) arranged outside the one-way valve (2) at the inlet end of the negative pressure pump (1), and a bubble removal mechanism (5) arranged inside the separation mechanism (4), the bubble removal mechanism (5) is used for removing bubbles from the blood; ​ The separation mechanism (4) comprises a shell (41), a sliding groove (42) arranged at the top of the shell (41), a sliding block (43) arranged inside the sliding groove (42), the sliding block (43) moves along the sliding groove (42), the sliding groove (42) limits the movement range of the sliding block (43), a return spring (44) arranged on the side of the sliding block (43) close to the negative pressure pump (1), the return spring (44) makes the sliding block (43) have a tendency to move away from the negative pressure pump (1), both ends of the return spring (44) are fixedly connected with the sliding block (43) and the sliding groove (42), a separation cabin (45) arranged inside the shell (41), a driving groove (46) opened on the outside of the separation cabin (45), the sliding block (43) extruding the driving groove (46) can make the separation cabin (45) rotate, the bottom of the sliding block (43) is slidably connected with the inner wall of the driving groove (46), the corners of the side walls of the driving groove (46) are staggered at the turning positions, a filter plate (47) arranged on the inner wall of the separation cabin (45), the filter plate (47) intercepts thrombus in the blood, a screw cap (48) arranged on the side of the shell (41) away from the negative pressure pump (1), the screw cap (48) is tightly screwed to seal the shell (41), and a docking unit arranged inside the screw cap (48); The side of the screw cap (48) away from the negative pressure pump (1) is provided with a medicine injection port at the center, and the screw cap (48) is provided with a suction port at the edge on the same side as the medicine injection port; The docking unit comprises a connecting head (49) opened on the side of the screw cap (48) close to the suction port, an ejection spring (410) arranged at the end of the connecting head (49) away from the negative pressure pump (1), both ends of the ejection spring (410) are fixedly connected with the screw cap (48) and the connecting head (49), a hole plate (411) arranged on the side of the separation cabin (45) close to the screw cap (48), and three annular array flow-through holes (412) opened on the side of the hole plate (411) close to the screw cap (48), one end of the connecting head (49) close to the hole plate (411) abuts against the aligned flow-through hole (412); The sliding block (43) is moved towards the negative pressure pump (1), and stops pushing after moving to the maximum stroke, so that it resets, the sliding block (43) drives the separation cabin (45) to rotate while moving, the separation cabin (45) drives the filter plate (47) and the hole plate (411) to rotate together, the hole plate (411) rotates to switch the flow-through hole (412) abutting against the connecting head (49).

2. The intelligent pressure feedback peripheral vascular thrombectomy and autologous blood transfusion system according to claim 1, wherein: The bottom of the sliding block (43) is provided with a driving rod, and the bottom end of the driving rod is slidably connected with the driving groove (46).

3. The intelligent pressure feedback peripheral vascular thrombectomy and autologous blood transfusion system according to claim 1, wherein: One end of the connecting head (49) close to the hole plate (411) is an outward convex arc end face, a ring groove is opened on the side of the flow-through hole (412) close to the connecting head (49), and the ring groove matches the outward convex arc end face of the connecting head (49).

4. The intelligent pressure feedback peripheral vascular thrombectomy and autologous blood transfusion system according to claim 1, wherein: The bubble discharging mechanism (5) comprises a settling chamber (51) arranged on the side of the shell (41) away from the separation cabin (45), a spring (52) arranged on the side of the settling chamber (51) close to the negative pressure pump (1), a gear ring (53) arranged on the outer end of the spring (52), a driving wheel (54) arranged on the top of the gear ring (53), the side of the driving wheel (54) away from the settling chamber (51) being rotationally connected with the shell (41), a driven wheel (55) arranged on the bottom of the driving wheel (54), an eccentric block (56) arranged on the side of the driven wheel (55) close to the settling chamber (51), a disc (57) arranged on the side of the driven wheel (55) away from the settling chamber (51), a knob (58) arranged on the bottom of the side of the shell (41) close to the negative pressure pump (1), and a pressing block (59) arranged on the side of the knob (58) close to the settling chamber (51).

5. The intelligent pressure feedback peripheral vascular thrombectomy and autologous blood transfusion system according to claim 4, wherein: The middle part of the knob (58) is provided with a thread, and the connecting part of the shell (41) and the knob (58) is provided with a screw hole, and the screw hole and the knob (58) are threadedly connected.

6. The intelligent pressure feedback peripheral vascular thrombectomy and autologous blood transfusion system according to claim 4, wherein: The side of the gear ring (53) close to the negative pressure pump (1) is provided with a limiting groove, and the inner wall of the side of the shell (41) close to the negative pressure pump (1) is provided with a limiting ring, and the limiting ring and the limiting groove are rotationally connected.

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