Control assembly and thrombectomy device

Abstract

The utility model discloses a control subassembly and thrombectomy device relates to medical instrument technical field, control subassembly includes first sensor, electric control valve and control module, first sensor is provided the far end of catheter of thrombectomy device, control module is electrically connected first sensor and electric control valve. The first sensor can obtain a pressure value in a catheter of the thrombectomy device and transmit the pressure value to the control module. And meanwhile, the electric control valve is arranged on a catheter of the thrombectomy device. Before the catheter encounters thrombus, the pressure in the catheter is low, the control module controls the electric control valve to be intermittently opened and closed, blood loss can be reduced to the maximum extent, blood suction of the catheter in the blood vessel conveying time is reduced, and the influence of an operation on the body of a patient is reduced. When the catheter is in contact with thrombus, the pressure of the catheter is increased by the thrombus. When the pressure value is larger than or equal to the threshold value, the control module controls the electric control valve to be continuously opened, so that thrombus is gradually extracted from the blood vessel, the thrombus is prevented from blocking the catheter, and the use safety of the control assembly is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field especially, and it is a kind of control assembly and take bolt device. BACKGROUND

[0002] The formation of thrombus is the result of the joint action of multiple factors, including genetic and environmental factors. For clinical thrombus patients, they usually show family heredity, repeated attack, severe symptoms, abnormal thrombus formation site and younger onset, etc. With the increasing incidence of thrombotic disease, it has become a serious problem of blocking or interrupting blood flow.

[0003] Current technology usually uses thrombus removal device to remove thrombus and other foreign matter in blood vessel. This technology transports the thrombus removal device to the thrombus site, and applies negative pressure at the proximal end of the thrombus removal device, so that the thrombus and other foreign matter are discharged out of the body along the catheter lumen, thereby reconstructing blood circulation.

[0004] However, during the operation, medical staff cannot judge whether the thrombus removal device is close to the thrombus, so that it needs to keep suctioning when being transported in the blood vessel, resulting in too much blood loss during the transportation process and increasing the risk of operation. SUMMARY

[0005] In view of the shortcomings of the above-mentioned related technology, the present application provides a control assembly and a thrombus removal device to solve the above technical problems.

[0006] The present application provides a control assembly, which is applied to a thrombus removal device. The control assembly includes a first sensor, an electric control valve and a control module. The first sensor is arranged at the distal end of the catheter of the thrombus removal device and is used to obtain the pressure value in the catheter. The electric control valve is used to detachably connect the catheter. The control module is electrically connected to the first sensor and the electric control valve. When the pressure value is less than the pressure threshold value, the control module controls the electric control valve to be intermittently opened or closed. When the pressure value is greater than or equal to the pressure threshold value, the control module controls the electric control valve to be continuously opened.

[0007] In an embodiment of the present application, the control assembly further includes a flow sensor, which is electrically connected to the control module, and the flow sensor is detachably connected to the catheter. The flow sensor is used to detect the flow value in the catheter. When the flow value is less than the flow threshold value and the pressure value is greater than or equal to the pressure threshold value, the control module controls the electric control valve to be continuously opened.

[0008] In an embodiment of the present application, the control assembly further includes a fixing clamp, which is arranged at intervals with the electric control valve. The fixing clamp is used to detachably connect with the catheter.

[0009] In an embodiment of the present application, the control assembly further comprises a second sensor, the second sensor is arranged at a proximal end of the catheter of the thrombus removal device and is electrically connected with the control module, the second sensor is configured to obtain a rated pressure value of the thrombus removal device, and the control module is configured to determine the pressure threshold value according to the rated pressure value.

[0010] In an embodiment of the present application, the control assembly further comprises an input module, the input module is electrically connected with the control module, and the input module is configured to input parameter information of the catheter.

[0011] In an embodiment of the present application, the control assembly further comprises a sound module, the sound module is electrically connected with the control module, and the control module is configured to switch a state of the sound module according to an opening state of the electric control valve.

[0012] To achieve the above object and other related objects, the present application provides a thrombus removal device, which comprises a catheter, a negative pressure source and the aforementioned control assembly. The catheter is provided with a handheld portion, and the handheld portion is provided with a prompt device. The catheter is configured to be detachably connected with the negative pressure source. The electric control valve is detachably connected with the catheter. The first sensor is arranged in the catheter and located in the handheld portion. The prompt device is electrically connected with the control module.

[0013] In an embodiment of the present application, the prompt device has a first state, a second state and a third state. When the electric control valve is in an intermittent opening state, the control module is configured to switch the state of the prompt device to the first state. When the electric control valve is in a continuous opening state, the control module is configured to switch the state of the prompt device to the second state. When the electric control valve is in a closed state, the control module is configured to switch the state of the prompt device to the third state.

[0014] In an embodiment of the present application, the catheter comprises a first section and a second section, and the second section is configured to communicate with the negative pressure source. The handheld portion comprises a housing, a connecting pipe and a control valve. The connecting pipe is communicated between the first section and the second section and located in the housing. The first sensor is connected with the connecting pipe, and the control valve is arranged in the connecting pipe.

[0015] In an embodiment of the present application, the control valve comprises a pressing block and a driving member. The driving member is in sliding fit with the housing, and the driving member is in transmission connection with the pressing block. When the driving member moves towards a first direction or a second direction, the pressing block presses or releases the connecting pipe. The first direction and the second direction are opposite.

[0016] In an embodiment of the present application, the handheld portion is further provided with a micro switch, the micro switch is electrically connected with the control module, and the micro switch is configured to obtain a state of the control valve. The control module is configured to selectively open or close the electric control valve according to the state of the control valve.

[0017] In an embodiment of the present application, the catheter is provided with a buffer portion, the buffer portion has a buffer cavity, and the buffer portion is located between the handheld portion and the electric control valve.

[0018] The utility model provides a control assembly, first sensor can obtain the pressure value in the catheter of taking bolt device, and transmission to control module, simultaneously, electric control valve sets up on the catheter of taking bolt device, before the catheter does not meet thrombus, the pressure in the catheter is lower, and control module controls electric control valve intermittent open -close, can reduce blood loss to the maximum extent, reduces the blood suction of catheter in blood vessel delivery time, reduces the influence of operation to patient's body, when the catheter contacts thrombus, and thrombus can cause the pressure increase of catheter, and when the pressure value is greater than or equal to threshold value, control module controls electric control valve to keep open, to make thrombus gradually be taken away from blood vessel, avoid thrombus to block the catheter, improve the use safety and use effect of control assembly.

[0019] The taking bolt device using the control assembly can reduce blood loss and improve the use safety and use effect of the taking bolt device. In addition, the catheter inserted into the body can be detachably connected to the negative pressure source and the electric control valve, and the catheter can be used as a disposable product to reduce the disinfection requirement of the taking bolt device. The negative pressure source and the electric control valve do not directly contact the human body, and they can be reusable products, which can not increase the cost of the taking bolt device and reduce the disinfection requirement of the taking bolt device. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0021] Figure 1 is a structure schematic view of a taking bolt device according to an exemplary embodiment of the present application;

[0022] Figure 2 is a liquid path structure schematic view of a control assembly and a negative pressure source according to an exemplary embodiment of the present application;

[0023] Figure 3 is a structure schematic view of another taking bolt device according to an exemplary embodiment of the present application;

[0024] Figure 4 is a schematic view of the relationship between the pressure of fluid in the catheter and time according to an exemplary embodiment of the present application;

[0025] Figure 5 is a structure schematic view of a buffer according to an exemplary embodiment of the present application;

[0026] Figure 6 is a structural schematic view of still another thrombectomy device shown in an exemplary embodiment of the present application;

[0027] Figure 7 is a circuit structure schematic view of a thrombectomy device shown in an exemplary embodiment of the present application;

[0028] Figure 8 is a structural schematic view of a catheter and a hand-held part shown in an exemplary embodiment of the present application;

[0029] Figure 9 is a sectional view along line A-A in Figure 8

[0030] Figure 10 is a structural schematic view of a micro switch shown in an exemplary embodiment of the present application;

[0031] Figure 11 is a circuit schematic view of another thrombectomy device shown in an exemplary embodiment of the present application;

[0032] Figure 12 is a circuit schematic view of still another thrombectomy device shown in an exemplary embodiment of the present application.

[0033] In the drawings: 1, thrombectomy device; 100, catheter; 110, first section; 120, second section; 130, horn suction head; 200, hand-held part; 210, housing; 220, connecting tube; 230, control valve; 231, pressing block; 232, driving member; 240, prompting device; 250, micro switch; 300, negative pressure source; 400, control assembly; 410, electric control valve; 420, control module; 430, first sensor; 440, flow sensor; 450, buffer part; 451, buffer cavity; 460, second sensor; 470, fixing clamp; 480, input module; 490, sound module. DETAILED DESCRIPTION

[0034] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0035] ​The terms "first", "second", and the like in the description and in the claims of the present application are used for distinguishing between similar objects and are not necessarily used to describe a particular sequential or chronological order. It is to be understood that the use of the term "first", "second", and the like, if any, in the description and in the claims of the present application is merely to distinguish between two separate and distinct structures, and not a particular sequential or chronological order. Unless specifically stated in the specification, the description and the claims of the present application do not imply that the features are the only possible ones, and do not represent a limitation. The terms "first", "second", and the like do not imply a certain order, but are used to distinguish one object from another. Furthermore, the terms "comprises", "comprising", "includes", "including", "has", "having" and the like are to be construed in a non-exclusive manner when employed in the description and the claims of the present application, unless otherwise noted. The terms "and / or" and "or" shall be understood to mean "and / or" unless otherwise noted. The characters " / " and "and / or" generally represent an "or" relationship between the associated objects.

[0036] In the embodiments of the present application, "proximal end" and "distal end" refer to the relative positions of the components to the user in the use environment, wherein the end closer to the user is designated as the "proximal end", and the end farther from the user is designated as the "distal end".

[0037] The formation of thrombus is the result of the joint action of multiple factors, including genetic and environmental factors. For clinical thrombus patients, they usually show family heredity, repeated attacks, severe symptoms, abnormal thrombus formation site, and younger onset, etc. With the increasing incidence of thrombotic diseases, it has become a serious problem of blocking or interrupting blood flow.

[0038] Current technology usually uses a thrombectomy device to remove foreign matter such as thrombus in the blood vessel. This technology reestablishes blood circulation by transporting the thrombectomy device to the thrombus site and applying negative pressure at the proximal end of the thrombectomy device, so that foreign matter such as thrombus is discharged out of the body along the catheter lumen.

[0039] However, during the operation, the medical staff cannot determine whether the thrombectomy device is close to the thrombus, so that it needs to maintain suction all the time when it is transported in the blood vessel, resulting in excessive blood loss during the transportation process and increasing the risk of surgery.

[0040] The present application provides a thrombectomy device 1, please refer to Figure 1 The thrombectomy device 1 can include a catheter 100 and a control assembly 400, and the control assembly 400 is arranged on the catheter 100.

[0041] Specifically, the catheter 100 is in the shape of an elongated tubular structure, so that it can be inserted into the body and aspirate thrombus. The catheter 100 can be a nylon tube or a polycarbonate tube, etc., and the present embodiment is not limited. Please refer to Figure 2, the catheter 100 is detachably connected with a negative pressure source 300, the negative pressure source 300 is used for providing power to the catheter 100. Wherein, the negative pressure source 300 can be a negative pressure suction pump or a vacuum generator, etc., the embodiment does not limit the type of negative pressure source 300. The negative pressure source 300 provides power, and thrombus can be transported from the distal end of the catheter 100 to the proximal end of the catheter 100 to realize the thrombectomy operation.

[0042] Exemplarily, please refer to Figure 1 and Figure 2 , the proximal end of the catheter 100 is provided with a trumpet suction head 130, the trumpet suction head 130 is a special designed medical suction head, which is similar to a trumpet, having a wider opening and a narrower neck. The trumpet suction head 130 is connected with different specifications of the negative pressure source 300, and the trumpet suction head 130 can improve the versatility of the catheter 100. The trumpet suction head 130 is connected with the negative pressure source 300, the negative pressure source 300 starts to work, and a negative pressure atmosphere is formed in the catheter 100. When the distal end of the catheter 100 contacts or is adjacent to the thrombus, the catheter 100 can suck the thrombus out of the body.

[0043] In the embodiment, please refer to Figure 2 and Figure 3 , the control assembly 400 can include an electrically controlled valve 410, a control module 420 and a first sensor 430, the first sensor 430 is arranged at the distal end of the catheter 100, the electrically controlled valve 410 is detachably connected with the catheter 100, and the control module 420 is electrically connected with the first sensor 430 and the electrically controlled valve 410.

[0044] It can be understood that the first sensor 430 is not arranged at the end of the catheter 100 farthest from the user, but the first sensor 430 is arranged at a position farther from the user relative to the electrically controlled valve 410. In addition, the first sensor 430 can be integrally formed with the catheter 100, or the first sensor 430 can be detachably arranged with the catheter 100. For the convenience of description, the following content is introduced by taking the first sensor 430 integrally formed with the catheter 100 as an example.

[0045] Please refer to Figure 3 , the electrically controlled valve 410 can be a pinch valve, which controls the opening and closing of the fluid in the catheter 100 by extruding the catheter 100. The electrically controlled valve 410 can be electrically connected with the control module 420, and the control module 420 can control the opening of the electrically controlled valve 410, thereby controlling the flow rate of the fluid in the catheter 100. It can be understood that the electrically controlled valve 410 can detachably clamp catheters 100 of different specifications, so that the control assembly 400 can adapt to catheters 100 of different specifications, thereby improving the adaptability of the control assembly 400.

[0046] Please refer to Figure 2The first sensor 430 can be a pressure sensor or similar device, and it is used to acquire the pressure value within the conduit 100. For example, please refer to [link to example]. Figure 2 as well as Figure 4 , Figure 4 The horizontal axis represents time, in milliseconds (ms), and the vertical axis represents the pressure value of the catheter 100, in kilopascals (kPa). Figure 4 The dashed line in the diagram illustrates the relationship between pressure and time in the internal fluid when catheter 100 does not encounter a thrombus. Figure 4 The solid line in the figure illustrates the relationship between pressure and time of the internal fluid when catheter 100 encounters a thrombus. (As shown in the image) Figure 4 As shown by the dotted line, when there is no thrombus in catheter 100, catheter 100 is unobstructed, and the pressure inside catheter 100 is relatively lower. Figure 4 As shown by the solid line, when a thrombus enters the catheter 100, the thrombus is a blockage formed by blood clots, which can obstruct the catheter 100, resulting in relatively higher pressure within the catheter 100. The pressure value obtained by the first sensor 430 can determine whether there is a thrombus in the catheter 100, providing a reference for the control module 420 and medical personnel, thereby improving surgical safety.

[0047] Therefore, please continue to refer to the following in this implementation: Figure 3 When the pressure value is greater than or equal to the pressure threshold, the control module 420 controls the solenoid valve 410 to remain open. In other words, a pressure value greater than or equal to the pressure threshold indicates that a thrombus or other substance is blocking the catheter 100. The control module 420 controls the solenoid valve 410 to continuously aspirate, and the pressure value of the catheter 100 will approach the rated pressure value of the negative pressure source 300. The greater pressure can extract the thrombus or other substance in the catheter 100, thus ensuring the thrombectomy effect of the thrombectomy device 1.

[0048] The pressure threshold can be the rated pressure value of the negative pressure source 300 or a percentage thereof. The rated pressure value of the negative pressure source 300 can be transmitted to the control device via wireless or wired transmission. For example, if the rated pressure value of the negative pressure source 300 is -100 kPa, the pressure threshold can be -90 kPa. This setting can eliminate transmission loss and ensure the safe use of the thrombectomy device 1.

[0049] Please continue reading. Figure 3 When the pressure value is less than the pressure threshold, the control module 420 controls the solenoid valve 410 to open or close intermittently. In other words, a pressure value less than the pressure threshold indicates that the catheter 100 has not come into contact with a thrombus, or that the catheter 100 has not come into contact with a large thrombus. However, continuous aspiration by the catheter 100 will cause a large amount of blood loss. The control module 420 controls the solenoid valve 410 to open or close intermittently. The intermittent aspiration method can reduce blood loss and improve the safety and effectiveness of the thrombectomy device 1.

[0050] In this embodiment, the specific duration ratio of the intermittent opening or closing of the electrically controlled valve 410 is not limited, i.e., the ratio of the opening duration and the closing duration of the electrically controlled valve 410 in one intermittent cycle, such as 1:1, 1:2, 2:1, etc. For example, the electrically controlled valve 410 can be a normally open valve, and the electrically controlled valve 410 is closed when powered on. In one intermittent cycle, the power-on duration of the electrically controlled valve 410 is 1 s, and the closing duration of the electrically controlled valve 410 is 1 s, i.e., the ratio is 1:1.

[0051] It can be understood that before encountering a thrombus, the electrically controlled valve 410 will be intermittently opened or closed, and the pressure in the catheter 100 will change at any time, and the pressure threshold will also change accordingly. Therefore, in this embodiment, the control module 420 can compare the pressure value and the pressure threshold when the electrically controlled valve 410 is completely opened, eliminating the influence of the working state of the electrically controlled valve 410 on the control effect of the control module 420.

[0052] In one embodiment, referring to Figure 3 and Figure 5 The catheter 100 is provided with a buffer portion 450, the buffer portion 450 has a buffer cavity 451, and the buffer portion 450 is located between the handheld portion 200 and the electrically controlled valve 410. For example, the catheter 100 is provided with a three-way pipe, the first end of the three-way pipe is connected to the catheter 100 extending from the handheld portion 200, the second end of the three-way pipe is connected to the catheter 100 extending from the electrically controlled valve 410, and the third end of the three-way pipe is connected to a flexible pipe to form the buffer portion 450, so that the buffer portion 450 has good elasticity and toughness. The buffer cavity 451 in the buffer portion 450 can effectively absorb and disperse the fluid impact and pressure fluctuation caused by the valve action at the moment when the electrically controlled valve 410 is opened or closed, which improves the stability and smoothness during the opening and closing of the electrically controlled valve 410.

[0053] At the same time, the control assembly 400 can further include a fixing clamp 470, the fixing clamp 470 is spaced apart from the electrically controlled valve 410, and the fixing clamp 470 is detachably connected to the catheter 100. The fixing clamp 470 can solve the problem of twisting or confusion of the catheter 100 during use, and the fixing clamp 470 provides support to ensure that the catheter 100 remains in a straight line near the connection point, avoiding twisting and deformation caused by external force or improper operation. Further, the fixing clamp 470 can be arranged on the side of the buffer portion 450 away from the electrically controlled valve 410, which can ensure that the catheter 100 near the buffer portion 450 is in a straight line, avoiding the influence of the bending of the catheter 100 on the buffering effect of the buffer cavity 451.

[0054] In addition, the fixed clamp 470 also has an adjusting function, which can be fine-tuned according to the different diameters and materials of the catheter 100 to ensure the best clamping effect. This setting not only improves the firmness of the catheter 100, but also reduces the potential risks caused by clamping too tightly or too loosely.

[0055] In another embodiment, referring to Figure 6 , the control assembly 400 can also include a flow sensor 440, which is electrically connected to the control module 420. The flow sensor 440 is detachably connected to the catheter 100 and is located on the side of the electrically controlled valve 410 close to the distal end of the catheter 100.

[0056] The flow sensor 440 is used to detect the flow value of the catheter 100, which indicates the flow condition in the catheter 100. For example, after the thrombus blocks the catheter 100, the pressure value in the catheter 100 will increase and the flow value will decrease. Therefore, when the flow value is less than the flow threshold value and the pressure value is greater than or equal to the pressure threshold value, the control module 420 controls the electrically controlled valve 410 to be continuously opened. The control module 420 can determine the state of the catheter 100 by the pressure and flow parameters, improve the accuracy of thrombus aspiration, and improve the control accuracy of the control module 420.

[0057] In this embodiment, the flow threshold value can be obtained through multiple experiments, or it can be converted according to the Bernoulli formula, which records the relationship between the fluid pressure and flow rate in the catheter 100, and further determines the relationship between the pressure and flow in the catheter 100 to convert the pressure threshold value to the flow threshold value.

[0058] It can be understood that when the first sensor 430 fails, the control module 420 can only use the flow value detected by the flow sensor 440 as the basis for controlling the electrically controlled valve 410. Specifically, when the flow value is less than the flow threshold value, the control module 420 controls the electrically controlled valve 410 to be continuously opened. When the flow value is greater than or equal to the flow threshold value, the control module 420 controls the electrically controlled valve 410 to be intermittently opened or closed, which will not be described in detail here.

[0059] In this embodiment, please refer to Figure 3The control assembly 400 can further comprise a second sensor 460, which can be a pressure sensor. The second sensor 460 is arranged at the proximal end of the catheter 100 and is electrically connected to the control module 420. The second sensor 460 can be integrated at the proximal end of the catheter 100 to improve the integration of the catheter 100. The second sensor 460 is used to obtain a rated pressure value of the thrombectomy device 1, which can be a rated pressure value of the negative pressure source 300. For example, the control module 420 controls the electromagnetic valve to be closed, and the pressure of the catheter 100 between the electromagnetic valve and the negative pressure source 300 approaches the rated pressure of the negative pressure source 300. The pressure value detected by the second sensor 460 can be determined as the pressure value of the negative pressure source 300.

[0060] The control module 420 is used to confirm the pressure threshold value according to the pressure value of the negative pressure source 300. For example, the pressure threshold value can be the rated pressure value of the negative pressure source 300 or a percentage thereof. The arrangement of the second sensor 460 can be suitable for various pump bodies, without the need for manual input into the control module 420. The control assembly 400 can automatically obtain the rated pressure value of different pump bodies and automatically calculate the pressure threshold value.

[0061] The second sensor 460 is not arranged at the end of the catheter 100 farthest from the user, but is arranged at a position farther from the user relative to the electrically controlled valve 410, i.e., the second sensor 460 is arranged between the electrically controlled valve 410 and the pump body.

[0062] Preferably, the second sensor 460 is connected to the inner wall of the catheter 100, and the second sensor 460 can directly obtain the rated pressure value in the negative pressure source 300, thereby improving the detection accuracy of the second sensor 460.

[0063] In this embodiment, please refer to Figure 7 The control assembly 400 can further comprise an input module 480, which includes but is not limited to a wireless transmission module, a touch display screen, etc. The transmission protocol of the wireless transmission module includes but is not limited to Bluetooth protocol, Zigbee protocol, etc. The input module 480 is electrically connected to the control module 420, and the input module 480 is used to input parameter information of the catheter 100 and the negative pressure source 300, such as the specifications, models of the catheter 100, and the rated power of the negative pressure source 300, etc.

[0064] Exemplarily, the electric control valve 410 can be an electric pinch valve, the input module 480 inputs the outer diameter and the inner diameter of the catheter 100 to the control module 420, and the electric control valve 410 pinches the outer wall of the catheter 100. During operation, the electric control valve 410 can pinch the catheter 100 to a specified shape to adjust the opening degree of the catheter 100. The control assembly 400 can adjust the pinching amplitude of the electric control valve 410 through the parameter signal of the catheter 100 to ensure the accurate control of the electromagnetic valve on the opening degree of the catheter 100 and improve the adaptability of the electric control valve 410.

[0065] In the embodiment, please refer to Figure 3 , the catheter 100 is provided with the hand-held part 200, which can be held by medical staff, and the medical staff can adjust the orientation of the catheter 100 through the hand-held part 200 to extend the catheter 100 to a specified position. The first sensor 430 is located in the hand-held part 200, wherein the first sensor 430 can be integrated in the hand-held part 200 to improve the integration of the catheter 100. The first sensor 430 can obtain the pressure value of the front end of the catheter 100 in real time to improve the accuracy of the first sensor 430.

[0066] In an embodiment, please refer to Figure 8 , the hand-held part 200 can be provided with the prompt device 240, which can include but is not limited to an indicator light, a buzzer, etc. For the convenience of description, the indicator light is taken as an example for introduction. The prompt device 240 is electrically connected with the control module 420. The prompt device 240 has a first state, a second state and a third state. In the first state, the prompt device 240 can display green, or the prompt device 240 can flash intermittently. In the second state, the prompt device 240 can display yellow, or the prompt device 240 can be always on. In the third state, the prompt device 240 can display red light, or the prompt device 240 can be off.

[0067] When the electric control valve 410 is in an intermittent opening state, the control module 420 is configured to switch the state of the prompt device 240 to the first state. When the electric control valve 410 is in a continuous opening state, the control module 420 is configured to switch the state of the prompt device 240 to the second state. When the electric control valve 410 is in a closed state, the control module 420 is configured to switch the state of the prompt device 240 to the third state. This setting can enable the medical staff to obtain the condition in the catheter 100 in real time without frequently turning their heads to check the indicator light or display screen of the electric control valve 410. This not only greatly improves the work efficiency, but also reduces the safety hazards that may be caused by the line of sight shift, and ensures the real-time monitoring of the state of the electric control valve 410.

[0068] In some other cases, the prompting device 240 can prompt the medical staff through different sound, such as continuous "drop" sound, intermittent "drop" sound, etc. The present embodiment is not limited thereto.

[0069] In the present embodiment, referring to Figure 9 , the catheter 100 can include a first section 110 and a second section 120. The first section 110 can be a stretching section, i.e. stretching into the human body. The first section 110 can be a hard tube, such as a stainless steel tube. The medical staff holds the hand-held part 200 and can control the orientation of the first section 110 so that the catheter 100 can enter the blood vessel of the human body. The second section 120 can be a lead-through section, i.e. communicating with the negative pressure source 300. The negative pressure source 300 communicates with the proximal end of the second section 120. The second section 120 can be a soft tube, such as a silica gel tube. The second section 120 has a bending ability, which improves the flexibility of the thrombectomy device 1.

[0070] Please continue to refer to Figure 9 , the hand-held part 200 can include a shell 210, a connecting tube 220 and a control valve 230. The control valve 230 is arranged in the connecting tube 220. The control valve 230 is located in the hand-held part 200. This arrangement facilitates the medical staff to timely open or close the catheter 100 to deal with emergency situations in the operation. The connecting tube 220 is located in the shell 210. The connecting tube 220 communicates between the first section 110 and the second section 120. The connecting tube 220 can be a flexible tube with a certain deformation ability. The medical staff can control the control valve 230 manually to make the connecting tube 220 deform, thereby changing the working state of the catheter 100. The first sensor 430 is connected to the connecting tube 220. The first sensor 430 can acquire the working state in the connecting tube 220 in real time.

[0071] Preferably, the first sensor 430 is connected to the inner wall of the connecting tube 220. The first sensor can directly acquire the pressure value in the connecting tube 220, thereby improving the detection accuracy of the first sensor 430.

[0072] In one embodiment, referring to Figure 9 , the control valve 230 can include a pressing block 231 and a driving member 232. The driving member 232 is in sliding fit with the shell 210. The driving member 232 is in transmission connection with the pressing block 231. When the driving member 232 moves towards a first direction or a second direction, the pressing block 231 presses or releases the connecting tube 220. The first direction and the second direction are opposite. The first direction can be as shown by L1 in Figure 9 , and the second direction can be as shown by L2 in Figure 9The first slope of the driving member 232 presses the second slope of the pressing block 231 to drive the pressing block 231 to move towards the connecting tube 220, thereby adjusting the opening of the connecting tube 220.

[0073] In the embodiment, as shown in Figure 10 and Figure 11 The handheld part 200 can further be provided with a micro switch 250, which is electrically connected with the control module 420. The micro switch 250 is used to obtain the state of the driving member 232 of the control valve 230 and transmit to the control module 420. As shown in Figure 9 , the micro switch 250 is in abutment with the pressing block 231, and the pressing block 231 presses the connecting tube 220, so that the catheter 100 is closed by the control valve 230. At the same time, the micro switch 250 can detect the moving position of the pressing block 231, so as to determine that the catheter 100 is closed by the control valve 230.

[0074] The control module 420 is used to selectively open or close the electrically controlled valve 410 according to the state of the control valve 230. The control module 420 can control the opening or closing of the electrically controlled valve 410 through the state of the control valve 230. When the medical staff closes the control valve 230, the control module 420 synchronously controls the electrically controlled valve 410 to be closed, which can avoid the second section 120 of the catheter 100 to be continuously under negative pressure, thereby affecting the normal work of the thrombus removing device 1. When the medical staff opens the control valve 230, the control module 420 synchronously controls the electrically controlled valve 410 to be opened, so that the medical staff does not need to frequently turn around to operate the control module 420, but only needs to control the electrically controlled valve 410 through the control valve 230. This setting greatly improves the work efficiency, reduces the safety hidden danger caused by the line of sight shift, and ensures the real-time monitoring of the state of the electrically controlled valve 410.

[0075] In some other cases, the negative pressure source 300 can be electrically connected with the control module 420, and the control module 420 can control the opening or closing of the negative pressure source 300. When the medical staff closes the control valve 230, the control module 420 synchronously controls the control valve 230 and the negative pressure source 300 to be closed, thereby avoiding the negative pressure source 300 to be continuously under negative pressure and damaging the structure of the negative pressure source 300 and the catheter 100, and improving the use safety of the thrombus removing device 1.

[0076] In the embodiment, as shown in Figure 12The control assembly 400 can further comprise a sound module 490, which can be a buzzer or a loudspeaker, and the like, and the embodiment is not limited in this regard. The sound module 490 is electrically connected to the control module 420, and the control module 420 is configured to switch the state of the sound module 490 according to the opening state of the electric control valve 410. When the electric control valve 410 is in different states, the control module 420 sends corresponding instructions to the sound module 490, and the sound module 490 emits different sounds correspondingly.

[0077] For example, when the electric control valve 410 is in a continuous opening state, the sound module 490 emits continuous "dropping" sound, and when the electric control valve 410 is in an intermittent opening or closing state, the sound module 490 emits intermittent "dropping" sound, which will not be described in detail herein. Through the above arrangement, the medical staff does not need to frequently turn his head to check the indicator light or display screen of the electric control valve 410, and can accurately determine the current state of the electric control valve 410 only by listening. This not only greatly improves the work efficiency, but also reduces the safety hazards caused by the line of sight shift, and at the same time ensures the real-time monitoring of the state of the electric control valve 410.

[0078] The control assembly 400 provided by the utility model, the first sensor 430 can acquire the pressure value in the catheter 100 of the thrombus removal device 1 and transmit to the control module 420. Meanwhile, the electric control valve 410 is arranged on the catheter 100 of the thrombus removal device 1. Before the catheter 100 meets the thrombus, the pressure in the catheter 100 is low, the control module 420 controls the electric control valve 410 to open and close intermittently, which can minimize blood loss, reduce the suction of blood by the catheter 100 during the transportation in the blood vessel, and reduce the impact of the operation on the patient's body. When the catheter 100 contacts the thrombus, the thrombus will increase the pressure of the catheter 100. When the pressure value is greater than or equal to the threshold value, the control module 420 controls the electric control valve 410 to be continuously opened, so that the thrombus is gradually removed from the blood vessel, avoiding the thrombus from blocking the catheter 100, and improving the use safety and use effect of the control assembly 400.

[0079] The thrombus removal device 1 using the control assembly 400, the medical staff can hold the hand-held part 200 and insert the catheter 100 into the thrombus part. The negative pressure source 300 provides power to the catheter 100, so that the catheter 100 can discharge the thrombus out of the body. Moreover, the control assembly 400 can reduce blood loss and improve the use safety and use effect of the thrombus removal device 1. In addition, the catheter 100 inserted into the body can be detachably connected to the negative pressure source 300 and the electric control valve 410, and the catheter 100 can be used as a disposable product to reduce the disinfection requirement of the thrombus removal device 1. The negative pressure source 300 and the electric control valve 410 do not directly contact the human body, and they can be reusable products, which can not only increase the cost of the thrombus removal device 1, but also reduce the disinfection requirement of the thrombus removal device 1.

[0080] It should be noted that, in this document, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0081] Further, it is to be understood that the scope of the methods and apparatus of the present embodiments are not limited by the order of execution of the functions as illustrated or discussed, nor by the order of the steps as described. For example, the described methods can be executed in an order other than the order described, and / or various steps can be combined, eliminated, or modified, and / or additional steps can be added. Further, features described with respect to certain examples can be combined in other examples.

[0082] The above only describes the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered by the protection scope of the present application.

Claims

1. A control component, characterized in that, The control component is applied to the thrombectomy device and includes: A first sensor is disposed at the distal end of the catheter of the thrombectomy device and is used to acquire the pressure value inside the catheter. An electrically controlled valve, the electrically controlled valve being used for detachable connection to the conduit; and, The control module is electrically connected to the first sensor and the solenoid valve. When the pressure value is less than the pressure threshold, the control module controls the solenoid valve to open or close intermittently. When the pressure value is greater than or equal to the pressure threshold, the control module controls the solenoid valve to remain open.

2. The control component according to claim 1, characterized in that, The control component also includes a flow sensor, which is electrically connected to the control module and detachably connected to the conduit. The flow sensor is used to detect the flow rate in the conduit. When the flow rate is less than a flow threshold and the pressure is greater than or equal to the pressure threshold, the control module controls the solenoid valve to remain open. And / or, the control assembly further includes a retaining clip spaced apart from the electrically controlled valve, the retaining clip being detachably connected to the conduit.

3. The control component according to claim 1, characterized in that, The control component further includes a second sensor, which is disposed at the proximal end of the catheter of the thrombectomy device and electrically connected to the control module. The second sensor is used to acquire the rated pressure value of the thrombectomy device, and the control module is used to confirm the pressure threshold based on the rated pressure value.

4. The control component according to claim 3, characterized in that, The control component further includes an input module, which is electrically connected to the control module and is used to input parameter information of the catheter. And / or, the control component further includes a sound module, which is electrically connected to the control module, and the control module is used to switch the state of the sound module according to the opening state of the electrically controlled valve.

5. A thrombus removal device, characterized in that, include: The catheter is provided with a handle, the handle is provided with a prompting device, and the catheter is used for detachable connection with a negative pressure source; as well as, The control component as described in any one of claims 1-4, wherein the electrically controlled valve is detachably connected to the conduit, the first sensor is disposed in the conduit and located inside the handheld part, and the prompting device is electrically connected to the control module.

6. The thrombectomy device according to claim 5, characterized in that, The prompting device has a first state, a second state, and a third state. When the solenoid valve is in an intermittently open state, the control module is used to switch the state of the prompting device to the first state. When the solenoid valve is in a continuously open state, the control module is used to switch the state of the prompting device to the second state. When the solenoid valve is in a closed state, the control module is used to switch the state of the prompting device to the third state.

7. The thrombectomy device according to claim 5, characterized in that, The conduit includes a first section and a second section, the second section being used to communicate with the negative pressure source. The handheld part includes a housing, a connecting pipe, and a control valve. The connecting pipe is connected between the first section and the second section and is located inside the housing. The first sensor is connected to the connecting pipe, and the control valve is disposed on the connecting pipe.

8. The thrombectomy device according to claim 7, characterized in that, The control valve includes a pressure block and a driving component. The driving component is slidably engaged with the housing and is drively connected to the pressure block. When the driving component moves in a first direction or a second direction, the pressure block squeezes or releases the connecting pipe. The first direction and the second direction are opposite.

9. The thrombectomy device according to claim 8, characterized in that, The handheld part is also equipped with a micro switch, which is electrically connected to the control module. The micro switch is used to obtain the state of the control valve, and the control module is used to selectively open or close the electrically controlled valve according to the state of the control valve.

10. The thrombectomy device according to claim 5, characterized in that, The conduit is provided with a buffer section, the buffer section having a buffer cavity, and the buffer section is located between the handheld part and the electrically controlled valve.

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