A circulation suction pump and a circulation suction system

Abstract

The present invention discloses a circulating suction pump and a circulating suction system, including a disposable valve box and a driving part detachably connected to the disposable valve box, the disposable valve box including a valve box main body, and a first valve body part and a second valve body part are respectively arranged on both sides of the valve box main body. The present invention is a disposable valve box for connecting a pipeline and a driving part for controlling the disposable valve box, the disposable valve box can be replaced after use, single use, safer and more hygienic, the driving part can be reused, the safety is improved, and the use cost is saved, the valve box main body is provided with two valve body parts, the first valve body part and the second valve body part, the two valve body parts are relatively independent, the two valve body parts can be respectively connected to a negative pressure suction pipeline and a positive pressure pipeline, cooperate with each other and operate alternately, the thrombus is decomposed and reduced under high-frequency negative pressure and positive pressure, and is completely sucked out of the blood vessel by the suction catheter, so as to meet various suction needs and cope with various stubborn thrombi.

Description

Technical Field

[0001] The present invention relates to the technical field of thrombus treatment, in particular to the technical field of a circulating suction pump and a circulating suction system. Background Art

[0002] Thrombosis is a multi-factorial process in which a group of genetic and environmental factors interact and influence each other. The main characteristics of common thrombosis patients in clinical practice are familial inheritance, recurrent attacks, severity of symptoms, abnormality of thrombosis site, and young onset of the disease. The incidence of thrombotic diseases is increasing, which can block or completely interrupt blood flow. If this type of embolism occurs in a blood vessel, it will cause very serious consequences, ranging from disability to death. In the prior art, suction catheters are usually used to remove foreign matter such as thrombi in blood vessels. The suction catheter is transported to the thrombus site, and negative pressure is applied to the proximal end of the suction catheter to allow thrombi and other foreign matter to be discharged from the body along the inner cavity of the catheter, thereby re-establishing blood circulation.

[0003] The suction catheter uses the negative pressure suction principle to suck out the thrombus through the suction catheter. The mechanical suction device in the prior art is a continuous suction device with a constant negative pressure and low suction force, which is not easy to suck out thrombi with large volume or strong adhesion. During continuous suction, if the doctor does not place the active end of the suction catheter close to the thrombus site, it may cause excessive blood to be sucked out, increasing the risk of complications. At the same time, when sucking thrombi with different formation times, the required suction force is also different, and the constant pressure suction effect is poor. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the prior art and to propose a circulating suction pump and a circulating suction system, which can repeatedly impact the thrombus with positive and negative pressure to gradually rupture, decompose and reduce the size of the thrombus, so that the thrombus is gradually drawn out of the blood vessel.

[0005] To achieve the above-mentioned object, the present invention proposes a circulation suction pump, comprising a disposable valve box and a driving part detachably connected to the disposable valve box, the disposable valve box comprising a valve box body, a first valve body part and a second valve body part are respectively provided on both sides of the valve box body, the first valve body part and the second valve body part are each provided with two communication ports connected to the inside thereof, the first valve body part and the second valve body part are respectively provided with a first control shaft and a second control shaft connected to the control thereof, when the first control shaft rotates, the communication ports provided on the first valve body part are controlled to be connected or disconnected with each other, and when the second control shaft rotates, the communication ports provided on the second valve body part are controlled to be connected or disconnected with each other;

[0006] The driving part includes a driving housing and a first output shaft and a second output shaft arranged on both sides of the driving housing. The first output shaft and the second output shaft are synchronously connected through a synchronization mechanism, and the synchronization mechanism is also provided with a power input part for driving its operation.

[0007] Preferably, the first valve body portion and the second valve body portion are alternately connected, and when the connecting ports on the first valve body portion are connected to each other, the connecting ports on the second valve body portion are disconnected from each other, and when the connecting ports on the second valve body portion are connected to each other, the connecting ports on the first valve body portion are disconnected from each other.

[0008] Preferably, a valve cavity is provided in the first valve body portion and the second valve body portion, the connecting port is connected with the valve cavity, a valve core is provided in the valve cavity and is rotatably connected thereto, a normally open groove is provided on the outer wall of the valve core and a notch groove is provided next to the normally open groove, the notch groove and the normally open groove are connected through a connecting groove, and the notch groove and the normally open groove correspond to one of the connecting ports respectively.

[0009] Preferably, the first control shaft and the second control shaft are provided with positioning blocks, and the first output shaft and the second output shaft are provided with positioning grooves engaged with the positioning blocks.

[0010] The locking plate is provided with a plurality of locking protrusions that mesh with the recessed portions of the tongue body, and a groove is provided between the locking plate and the recessed portions of the tongue body. The locking plate can be slidably arranged in the latching groove, and a plurality of locking protrusions that mesh with the recessed portions of the tongue body are provided on the locking plate. The locking protrusions can extend into the locking hole, and a groove is provided between adjacent locking protrusions. The driving housing is also provided with a locking knob rotatably connected to the driving housing, and a cam eccentrically connected to the locking knob is provided in the driving housing, and the cam is in conflict with the locking plate, and the locking plate is rotated to drive the locking plate to slide along the plate slide groove, and a return spring for driving the locking plate to slide in a direction close to the cam is also provided on the locking plate.

[0011] Preferably, a locking sensor cooperating with the locking card plate is further provided in the driving housing, and when the locking sensor cooperates with the locking card plate, the locking card plate is in a locked state.

[0012] Preferably, the valve box body and the drive housing are respectively provided with fool-proof positioning pins and fool-proof positioning holes that engage with each other.

[0013] Preferably, a micro switch is further provided in the driving housing, and a probe of the micro switch extends into the foolproof positioning socket and abuts against the foolproof positioning pin.

[0014] Preferably, a zero position sensing sheet is disposed on the outer side of any one of the first output shaft and the second output shaft, and a zero position sensor cooperating with the zero position sensing sheet is disposed on the drive housing.

[0015] Preferably, the drive housing is further provided with a drive panel, and the drive panel is connected to a wire control electrically connected thereto.

[0016] Another object of the present invention is to propose a circulating suction system, comprising a circulating suction pump as described in any one of the above items, and also comprising a tee, a separation tank, a liquid storage tank and a negative pressure source, one end of the tee is connected to the suction catheter, one end is connected to one of the connecting ports of the first valve body, and one end is connected to the input end of the separation tank, another connecting port on the first valve body is connected to physiological saline, the output end of the separation tank is connected to one of the connecting ports of the second valve body, and another connecting port of the second valve body is connected to the input end of the liquid storage tank, and the liquid storage tank is connected to the negative pressure source.

[0017] Preferably, the separation tank comprises a tank body and a separation screen obliquely arranged in the tank body, and the tank body is also provided with a separation input port and a separation output port connected to the interior thereof, the separation input port is connected to the lower side of the separation screen, the separation output port is connected to the upper side of the separation screen, and the tank body is transparent.

[0018] The beneficial effects of a circulating suction pump and a circulating suction system of the present invention: the present invention separately arranges a disposable valve box for connecting pipelines and a driving part for controlling the disposable valve box. The disposable valve box can be replaced after use and is single-use, which is safer and more hygienic. The driving part can be reused to improve safety and save use costs. Two valve body parts, a first valve body part and a second valve body part, are arranged on the valve box main body. The two valve body parts are relatively independent of each other. The two valve body parts can be respectively connected to a negative pressure suction pipeline and a positive pressure pipeline, cooperate with each other and operate alternately. The thrombus is decomposed and reduced under high-frequency negative and positive pressures, and is thus completely sucked out of the blood vessel by the suction catheter, thereby meeting various suction needs and being able to cope with various stubborn thrombi.

[0019] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of a circulating suction pump of the present invention.

[0021] Figure 2 It is a schematic diagram of the explosion structure of a circulating suction pump of the present invention.

[0022] Figure 3 It is a schematic diagram of the main structure of a circulation suction pump of the present invention.

[0023] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure of AA.

[0024] Figure 5 yes Figure 3 Schematic diagram of the cross-sectional structure of BB.

[0025] Figure 6 It is a rear structural schematic diagram of a circulating suction pump of the present invention.

[0026] Figure 7 It is a rear view schematic diagram of the internal structure of a circulating suction pump of the present invention.

[0027] Figure 8 yes Figure 7 Schematic diagram of the cross-sectional structure of FF.

[0028] Fig. 9 It is a schematic diagram of the three-dimensional structure of a valve box main body of a circulating suction pump of the present invention.

[0029] Fig.10 It is a schematic diagram of the main structure of a valve box body of a circulating suction pump of the present invention.

[0030] Fig.11 yes Fig.10 Schematic diagram of the cross-sectional structure of CC.

[0031] Fig.12 It is a schematic diagram of the rear view structure of a valve box body of a circulating suction pump of the present invention.

[0032] Fig.13 It is a schematic diagram of the top view of the valve box main body of a circulating suction pump of the present invention.

[0033] Fig.14 It is a three-dimensional structural schematic diagram of a valve core communication port of a circulating suction pump of the present invention.

[0034] Fig.15 It is a schematic diagram of the main structure of a valve core connecting port of a circulating suction pump of the present invention.

[0035] Fig.16 yes Fig.15 Schematic diagram of the cross-sectional structure of EE.

[0036] Fig.17 It is a structural schematic diagram of a circulation attraction system of the present invention.

[0037] Fig.18It is a diagram of the intermittent opening and closing angles of the valve cores on both sides, with one rotation of the valve cores on both sides as a cycle.

[0038] Fig.19 It is a schematic diagram of the structure of a separation tank of a circulating suction system of the present invention.

[0039] in:

[0040] 1-valve box body; 2-drive housing; 3-tee; 4-separation tank; 5-liquid storage tank; 6-negative pressure source; 11-first valve body; 12-second valve body; 13-connecting port; 14-first control shaft; 15-second control shaft; 16-valve cavity; 17-valve core; 18-position locking tongue; 19-foolproof positioning pin; 111-zero position sensor; 112-zero position sensor; 141-positioning block; 171-missing Slot; 172-normally open slot; 21-first output shaft; 22-second output shaft; 23-locking socket; 24-foolproof positioning socket; 25-locking knob; 26-cam; 27-reset spring; 28-locking sensor; 29-micro switch; 201-locking bump; 210-drive panel; 211-positioning slot; 41-tank body; 42-separation screen; 43-separation input port; 44-separation output port. Implementation

[0041] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of the present invention. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0042] In the description of the present invention, it should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0043] In the description of the present invention, it should be noted that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the invention product is usually placed when in use, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. "Several" means one or more, unless otherwise clearly and specifically defined.

[0044] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0045] See also Figure 1-Figure 16The present invention provides a circulation suction pump, comprising a disposable valve box and a driving part detachably connected to the disposable valve box, the disposable valve box is used to connect a pipeline, and the driving part is used to control the disposable valve box, the disposable valve box comprises a valve box body 1, a first valve body part 11 and a second valve body part 12 are respectively arranged on both sides of the valve box body 1, the first valve body part 11 and the second valve body part 12 are respectively provided with two communication ports 13 connected to the inside thereof, the first valve body part 11 and the second valve body part 12 are respectively provided with a first control shaft 14 and a second control shaft 15 connected to the control thereof, when the first control shaft 14 rotates, the communication ports 13 arranged on the first valve body part 11 are controlled to be connected or disconnected with each other, and when the second control shaft 15 rotates, the communication ports 13 arranged on the second valve body part 12 are controlled to be connected or disconnected with each other; the driving part comprises a driving housing 2 and a first output shaft 21 and a second output shaft 22 arranged on both sides of the driving housing 2, the first output shaft 21 and the second output shaft 22 are synchronously connected with each other through a synchronization mechanism, and the synchronization mechanism is also provided with a power input part for driving its operation. When in use, the disposable valve box is used to connect the pipeline, and the driving part is used to control the disposable valve box. The disposable valve box can be replaced after use and is single-use, which is safer and more hygienic. The driving part can be reused to improve safety and save use costs. The valve box main body 1 is provided with two valve body parts, a first valve body part 11 and a second valve body part 12. The two valve body parts are relatively independent. The two valve body parts can be respectively connected to the negative pressure suction pipeline and the positive pressure pipeline, cooperate with each other and operate alternately. The thrombus is decomposed and reduced under high-frequency negative and positive pressure, and is thus all sucked out of the blood vessel by the suction catheter, meeting various suction needs and being able to deal with various stubborn thrombi.

[0046] See also Fig.18 The first valve body 11 and the second valve body 12 are alternately connected. When the communication ports 13 on the first valve body 11 are connected to each other, the communication ports 13 on the second valve body 12 are disconnected from each other. When the communication ports 13 on the second valve body 12 are connected to each other, the communication ports 13 on the first valve body 11 are disconnected from each other. The two valve bodies operate alternately and cooperate with each other. During suction, the suction pipeline can be controlled to alternately switch between positive pressure and negative pressure, so that the thrombus can be decomposed and reduced under high-frequency negative and positive pressures. Example

[0047] See also Figure 1-Figure 17 The power input part includes a power input shaft synchronously connected with the synchronization mechanism, a coupling provided on the power input shaft, and a driving motor drivingly connected with the coupling. The driving motor can drive the first output shaft 21 and the second output shaft 22 on both sides to rotate synchronously, thereby driving the first control shaft 14 and the second control shaft 15 to rotate synchronously. Single motor drive can save costs and improve the synchronization of the control shafts on both sides.

[0048] See also Figure 5 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.13 and Fig.14 A valve cavity 16 is provided in each of the first valve body portion 11 and the second valve body portion 12, and the communicating port 13 is communicated with the valve cavity 16. A valve core 17 is provided in the valve cavity 16 and is rotatably connected thereto. The outer wall of the valve core 17 is provided with a surrounding normally open groove 172, and a notch groove 171 is provided next to the normally open groove 172. The notch groove 171 is communicated with the normally open groove 172 through a communicating groove, and the notch groove 171 and the normally open groove 172 correspond to one of the communicating ports 13 respectively. In this embodiment, the connection or disconnection between the two communication ports is controlled by the cooperation of the notch groove 171 and the normally open groove 172. The communication port 13 connected to the normally open groove 172 is used as an input end for connecting an input source of physiological saline or an input device such as a negative pressure source or a positive pressure source, and the communication port 13 connected to the notch groove 171 is used as an output end. During the rotation of the valve core 17, the communication port 13 at the input end can maintain the connection with the normally open groove 172, and the communication port 13 at the output end will be connected with the notch groove 171 only when the notch groove 171 rotates to the position of the communication port 13. At this time, the two communication ports 13 are connected through the cooperation of the normally open groove 172 and the notch groove 171, and can maintain connection for a certain time. The connection time is determined by the length of the notch groove 171 and the rotation speed of the valve core 17. When the notch groove 171 is staggered with the corresponding communication port 13, the connection between the two communication ports 13 can be disconnected. When the valve core 17 continues to rotate, intermittent connection and disconnection between the two communication ports 13 can be achieved, which is convenient to control and has stronger controllability.

[0049] See also Figure 2 , Fig.13 The first control shaft 14 and the second control shaft 15 are provided with positioning blocks 141, and the first output shaft 21 and the second output shaft 22 are provided with positioning grooves 211 that mesh with the positioning blocks 141. When the positioning blocks 141 cooperate with the positioning grooves 211, they can not only locate the only connection position between the two, but also avoid relative rotation between the control shaft and the output shaft, thereby improving the synchronization between the two. Example

[0050] See also Figure 2 , Figure 4 , Figure 7 , Figure 8 , Fig.11A plurality of protruding positioning locking tongues 18 are provided on one side of the valve box body 1 close to the drive housing 2, a locking socket 23 cooperating with the positioning locking tongue 18 is provided on the drive housing 2, a recessed tongue body concave portion 181 is provided on the outer wall of the positioning locking tongue 18, a locking card plate 20 and a card plate slide groove adapted to the locking card plate 20 are provided in the drive housing 2, the locking card plate 20 can be slidably arranged in the card plate slide groove, a plurality of locking protrusions 201 meshing with the tongue body concave portion 181 are provided on the locking card plate 20, and the locking The protrusion 201 can extend into the locking hole 23, and a groove is provided between the adjacent locking protrusions 201. The drive housing 2 is also provided with a locking knob 25 rotatably connected thereto. The drive housing 2 is provided with a cam 26 eccentrically connected to the locking knob 25. The cam 26 is in contact with the locking card plate 20 and rotates the locking card plate 20 to drive the locking card plate 20 to slide along the card plate slot. The locking card plate 20 is also provided with a return spring 27 for driving the locking card plate 20 to slide in a direction close to the cam 26. In this embodiment, by providing a positioning locking tongue 18 and a locking card plate 20, the disposable valve box and the driving part can be locked together to prevent the two from being separated and to prevent accidents caused by the circulating suction pump during surgery. When the disposable valve box needs to be fixed to the driving part, the locking knob 25 is first rotated to the open state. At this time, the short axis side of the cam 26 contacts the locking card plate 20, and the locking card plate 20 is attached to the cam 26 and the locking protrusion 201 of the locking card plate 20 under the action of the reset spring 27. Exit the locking socket 23, align the positioning locking tongue 18 of the valve box body 1 with the locking socket 23 and insert it, then rotate the locking knob 25 in the opposite direction to make the long axis side of the cam 26 contact the locking card plate 20, drive the locking card plate 20 to slide along the card plate slide groove, and the locking protrusion 201 of the locking card plate 20 slides into the locking socket 23 and engages with the inner recess 181 of the tongue body, so that the disposable valve box and the driving part are locked together through the cooperation of the locking protrusion 201 and the inner recess 181 of the tongue body, thereby improving stability.

[0051] See also Figure 1 , Figure 2 The drive housing 2 is also provided with a drive panel 210, and a wire control electrically connected to the drive panel 210 is connected to the drive panel 210. The drive panel 210 can be used to control the drive part. The drive panel 210 can prompt the operation steps, feedback information, program call, parameter fine-tuning and frequency adjustment. The lower part has a power on, power off, negative pressure suction, and cycle suction button. The wire control can extend the control distance and facilitate operation adjustment during surgery.

[0052] See also Figure 2 , Figure 7The drive housing 2 is also provided with a locking sensor 28 that cooperates with the locking card plate 20. When the locking sensor 28 cooperates with the locking card plate 20, the locking card plate 20 is in a locked state. The locking sensor 28 is a pressure-triggered sensor, which is provided on the locking card plate 20. When the cam 26 is in a locked state, the locking sensor 28 conflicts with the inner wall of the drive housing 2. When the cam 26 is in an unlocked state, the locking sensor 28 does not conflict with the inner wall of the drive housing 2. The position of the locking card plate 20 is monitored by the locking sensor 28. The locking sensor 28 is connected to the drive panel 210 for data communication. The drive panel 210 will control the operation of the power input part only when it receives a signal from the locking sensor 28 that the locking card plate 20 is in a locked state, thereby improving the safety of use.

[0053] See also Figure 2 , Figure 8 , Fig.10 , Fig.11 , Fig.12 , Fig.13 The valve box body 1 and the drive housing 2 are respectively provided with mutually engaged anti-foolproof positioning pins 19 and anti-foolproof positioning holes 24. The anti-foolproof positioning pins 19 and the anti-foolproof positioning holes 24 cooperate to ensure that the valve box body 1 and the drive housing 2 have a unique matching state, avoiding accidents caused by reverse insertion.

[0054] See also Figure 7 , Figure 8 A micro switch 29 is also provided in the drive housing 2, and the probe of the micro switch 29 extends into the anti-foolproof positioning socket 24 and contacts and cooperates with the anti-foolproof positioning pin 19. The micro switch 29 is connected to the drive panel 210 for data communication. When the anti-foolproof positioning pin 19 is inserted into the anti-foolproof positioning socket 24, the anti-foolproof positioning pin 19 can contact the probe of the micro switch 29. After receiving the signal, the micro switch 29 can transmit the signal to the drive panel 210, so that the drive panel 210 can judge whether the valve box body 1 is fixed on the drive housing 2, thereby choosing whether to control the operation of the device.

[0055] See also Figure 2 , Figure 6 , Figure 7 A zero position sensing sheet 111 is provided on the outer side of any of the first output shaft 21 and the second output shaft 22, and a zero position sensor 112 is provided on the drive housing 2 to cooperate with the zero position sensing sheet 111. To facilitate the determination of the zero point position, a corresponding reset button is provided on the drive panel 210. After pressing the reset button, the power input unit can control the first output shaft 21 and the second output shaft 22 to automatically rotate and reset, which is convenient for the disposable valve box to be installed in position. Example

[0056] See also Fig.17 , Fig.18 , Fig.19The present embodiment provides a circulation suction system, comprising a circulation suction pump as described in any of the above embodiments, and further comprising a tee 3, a separation tank 4, a liquid storage tank 5 and a negative pressure source 6, wherein one end of the tee 3 is connected to a suction catheter, one end is connected to one of the communication ports 13 (physiological saline outlet) of the first valve body 11, and one end is connected to the input end of the separation tank 4, another communication port 13 (physiological saline inlet) on the first valve body 11 is connected to the physiological saline, the output end of the separation tank 4 is connected to one of the communication ports 13 (negative pressure outlet) of the second valve body 12, and another communication port (negative pressure inlet) of the second valve body 12 is connected to the input end of the liquid storage tank 5, and the liquid storage tank 5 is connected to the negative pressure source 6. The suction catheter is used for suction. During the suction process, the power input part controls the first valve body part 11 and the second valve body part 12 to operate synchronously, and the first valve body part 11 and the second valve body part 12 are alternately connected. Since the connecting ports at one end of the first valve body part 11 and the second valve body part 12 are connected to the suction catheter through the three-way 3, during the suction process, the two valve bodies are alternately connected. When the two connecting ports 13 of the second valve body part 12 are connected, the negative pressure source 6 is connected to the suction catheter through the second valve body part 12. At this time, the two connecting ports 13 of the first valve body part 11 are in a disconnected state, and the suction catheter generates negative pressure to suck blood clots. When the two connecting ports 13 of the first valve body part 11 are connected, physiological saline is connected to the suction catheter through the first valve body part 11. At this time, the two connecting ports 13 of the second valve body part 12 are in a disconnected state, and the suction catheter generates positive pressure to make the blood vessel oscillate. This is repeated under the action of high frequency, generally 4-12 cycles per second are adjustable, the thrombus is ruptured and decomposed, and the inhaled thrombus is separated and collected by the separation tank 4.

[0057] See also Fig.19 The separation tank 4 includes a tank body 41 and a separation screen 42 obliquely disposed in the tank body 41. The tank body 41 is also provided with a separation input port 43 and a separation output port 44 communicating with the interior thereof. The separation input port 43 and the separation output port 44 are respectively communicated with both sides of the separation screen 42. The separation input port 43 is communicated with the lower side of the separation screen 42, and the separation output port 44 is communicated with the upper side of the separation screen 42. The tank body 41 is transparent. Thrombus enters the separation tank 4 through the pipeline, and the separation screen 42 retains it in the separation tank 4 to prevent the thrombus from entering the negative pressure source 6.

[0058] The standard parts used in this application document can all be purchased from the market, and the specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the prior art. The electric slide rail slide, cylinder, welding machine, electric telescopic rod and internal components of the controller all adopt conventional models in the prior art, and their internal structures belong to the prior art structure. Workers can complete normal operation of them according to the existing technical manual. In addition, the circuit connection adopts the conventional connection method in the prior art, and no specific description is given here.

[0059] It should be noted that, although the above embodiments have been described in this article, the scope of patent protection of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, changes and modifications made to the embodiments described herein, or equivalent structures or equivalent process changes made using the contents of the present specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields are all included in the scope of protection of the patent of the present invention.

Claims

1. A circulating suction pump, comprising a disposable valve box and a driving part detachably connected to the disposable valve box, characterized in that: The disposable valve box comprises a valve box body (1), wherein a first valve body part (11) and a second valve body part (12) are respectively provided on both sides of the valve box body (1), wherein the first valve body part (11) and the second valve body part (12) are each provided with two communication ports (13) which are in communication with the interior thereof, and the first valve body part (11) and the second valve body part (12) are respectively provided with a first control shaft (14) and a second control shaft (15) which are controllably connected thereto, wherein when the first control shaft (14) rotates, the communication ports (13) provided on the first valve body part (11) are controlled to be connected or disconnected with each other, and when the second control shaft (15) rotates, the communication ports (13) provided on the second valve body part (12) are controlled to be connected or disconnected with each other; The driving part comprises a driving housing (2) and a first output shaft (21) and a second output shaft (22) provided on both sides of the driving housing (2); the first output shaft (21) and the second output shaft (22) are synchronously connected via a synchronization mechanism, and the synchronization mechanism is also provided with a power input part for driving the operation thereof; The first valve body portion (11) and the second valve body portion (12) are alternately connected; when the connecting ports (13) on the first valve body portion (11) are connected to each other, the connecting ports (13) on the second valve body portion (12) are disconnected from each other; and when the connecting ports (13) on the second valve body portion (12) are connected to each other, the connecting ports (13) on the first valve body portion (11) are disconnected from each other. The first valve body portion (11) and the second valve body portion (12) are both provided with a valve cavity (16), the communication port (13) is in communication with the valve cavity (16), a valve core (17) rotatably connected to the valve cavity (16) is provided in the valve cavity (16), an outer wall of the valve core (17) is provided with a surrounding normally open groove (172), a notch groove (171) is provided next to the normally open groove (172), the notch groove (171) and the normally open groove (172) are in communication with each other via a communication groove, and the notch groove (171) and the normally open groove (172) respectively correspond to one of the communication ports (13); The first control shaft (14) and the second control shaft (15) are provided with positioning blocks (141), and the first output shaft (21) and the second output shaft (22) are both provided with positioning grooves (211) that mesh with the positioning blocks (141).

2. A circulating suction pump as claimed in claim 1, characterized in that: A plurality of protruding positioning locking tongues (18) are provided on one side of the valve box body (1) close to the drive housing (2); a locking socket (23) cooperating with the positioning locking tongue (18) is provided on the drive housing (2); a recessed inner concave portion (181) of the tongue body is provided on the outer wall of the positioning locking tongue (18); a locking card plate (20) and a card plate slide groove adapted to the locking card plate (20) are provided in the drive housing (2); the locking card plate (20) can be slidably arranged in the card plate slide groove; and a plurality of locking protrusions are provided on the locking card plate (20) that mesh with the inner concave portion (181) of the tongue body (201), the locking protrusion (201) can extend into the locking socket (23), the drive housing (2) is also provided with a locking knob (25) rotatably connected thereto, the drive housing (2) is provided with a cam (26) eccentrically connected to the locking knob (25), the cam (26) is in contact with the locking card plate (20), and the locking card plate (20) is rotated to drive the locking card plate (20) to slide along the card plate slide groove, and the locking card plate (20) is also provided with a return spring (27) for driving the locking card plate (20) to slide in a direction close to the cam (26).

3. A circulating suction pump as claimed in claim 2, characterized in that: A locking sensor (28) cooperating with the locking card plate (20) is also provided in the driving housing (2); when the locking sensor (28) cooperates with the locking card plate (20), the locking card plate (20) is in a locked state.

4. A circulating suction pump as claimed in claim 1, characterized in that: The valve box body (1) and the drive housing (2) are respectively provided with a foolproof positioning pin (19) and a foolproof positioning socket (24) that mesh with each other.

5. A circulation suction pump as claimed in claim 4, characterized in that: A micro switch (29) is also provided in the drive housing (2), and a probe of the micro switch (29) extends into the foolproof positioning socket (24) and contacts and cooperates with the foolproof positioning pin (19).

6. A circulating suction pump as claimed in claim 1, characterized in that: A zero position sensing sheet (111) is provided on the outer side of any one of the first output shaft (21) and the second output shaft (22), and a zero position sensor (112) cooperating with the zero position sensing sheet (111) is provided on the drive housing (2).

7. A circulation suction system, characterized in that: A circulating suction pump according to any one of claims 1 to 6, further comprising a tee (3), a separation tank (4), a liquid storage tank (5) and a negative pressure source (6), wherein one end of the tee (3) is connected to a suction catheter, one end is connected to one of the connecting ports (13) of the first valve body (11), and one end is connected to an input end of the separation tank (4); another connecting port (13) on the first valve body (11) is connected to physiological saline; an output end of the separation tank (4) is connected to one of the connecting ports (13) of the second valve body (12), and another connecting port of the second valve body (12) is connected to an input end of the liquid storage tank (5); and the liquid storage tank (5) is connected to the negative pressure source (6).

Images