CN117462210B - Thrombus suction device - Google Patents
Thrombus suction device Download PDFInfo
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- CN117462210B CN117462210B CN202311824289.4A CN202311824289A CN117462210B CN 117462210 B CN117462210 B CN 117462210B CN 202311824289 A CN202311824289 A CN 202311824289A CN 117462210 B CN117462210 B CN 117462210B
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- 208000007536 Thrombosis Diseases 0.000 title claims abstract description 62
- 230000033001 locomotion Effects 0.000 claims description 14
- 208000006011 Stroke Diseases 0.000 description 28
- 230000001276 controlling effect Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000017531 blood circulation Effects 0.000 description 2
- 208000005189 Embolism Diseases 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 230000002490 cerebral effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B2017/22079—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with suction of debris
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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Abstract
The invention relates to a thrombus suction device, belongs to the technical field of thrombus suction, and solves the problem of low suction efficiency caused by intermittent suction adopted by the existing thrombus suction pump system. The invention relates to a thrombus sucking device, which comprises a sucking machine and a negative pressure tank, wherein the sucking machine comprises a mounting seat and a sucking pump, the sucking pump comprises a driving unit, a first intermittent pump, a second intermittent pump and an air duct, and the air duct is communicated with the negative pressure tank; the driving unit is used for driving the first intermittent pump. The first intermittent pump and the second intermittent pump of the thrombus sucking device can alternately generate negative pressure, so that intermittent negative pressure suction is realized, thrombus sucking operation is facilitated, continuous suction of thrombus is realized, and suction efficiency is remarkably improved for intermittent suction.
Description
Technical Field
The invention relates to the technical field of thrombus aspiration, in particular to a thrombus aspiration device.
Background
With the current improvement of the living standard of people, the incidence rate of thrombotic diseases is increasing, and the thrombotic diseases can block or completely interrupt blood flow. If such embolism occurs in cardiac and cerebral vessels, serious consequences are caused, and the death can be caused seriously, how to quickly and effectively eliminate the obstruction is a problem to be solved urgently by those skilled in the art.
In the prior art, a suction catheter is generally used for removing foreign matters such as thrombus in a blood vessel, the suction catheter is conveyed to a thrombus position, and the foreign matters such as thrombus are discharged out of the body along a catheter inner cavity by applying negative pressure on the proximal end of the suction catheter, so that blood circulation is reestablished. In practice it has been found that if aspiration is stopped and waited for a period of time when a thrombus seizes the aspiration tube, the thrombus can generally change shape or become loose, facilitating the subsequent aspiration. Intermittent aspiration is more advantageous for thrombus aspiration procedures.
The current commonly used intermittent thrombus suction pump system mostly adopts a centrifugal vacuum pump to generate negative pressure, and utilizes a valve to conduct on-off operation on a suction pipeline, so that thrombus is intermittently sucked. But suction efficiency using intermittent suction is low.
Therefore, there is an urgent need for a thrombus aspiration device to solve the above-described problem of low aspiration efficiency caused by intermittent aspiration.
Disclosure of Invention
In view of the above analysis, an embodiment of the present invention is directed to providing a thrombus aspiration device, which is used to solve the problem of low aspiration efficiency caused by intermittent aspiration in the prior art.
The aim of the invention is mainly realized by the following technical scheme:
A thrombus aspiration device, comprising an aspiration machine and a negative pressure tank, wherein the aspiration machine comprises a mounting seat and an aspiration pump, the aspiration pump comprises a driving unit, a first intermittent pump, a second intermittent pump and an air duct, and the air duct is communicated with the negative pressure tank; the driving unit is used for driving the first intermittent pump;
The first intermittent pump comprises a first reciprocating unit and a first air cylinder, the second intermittent pump comprises a second reciprocating unit and a second air cylinder, and the first air cylinder and the second air cylinder are connected with the air guide pipe;
The first reciprocating unit comprises a first rotating wheel, a rotating wheel shaft, a rotating bearing, a first reciprocating shaft and a first connecting rod, and the first rotating wheel is connected with the driving unit; the rotating shaft and the first reciprocating shaft are fixedly connected with a first rotating wheel, the rotating bearing comprises an inner ring and an outer ring, the rotating shaft is fixedly connected with the inner ring of the rotating bearing, the outer ring of the rotating bearing is fixedly connected with the mounting seat, and one end of the first connecting rod is rotationally connected with the first reciprocating shaft; the first reciprocating shaft can do circular motion around the rotating wheel shaft and drives the first connecting rod to do reciprocating motion, so that the first cylinder is repeatedly pushed and pulled;
The second reciprocating unit comprises a second rotating wheel, a second reciprocating shaft and a second connecting rod, the second rotating wheel is connected with the rotating wheel shaft, the second reciprocating shaft is connected with the second rotating wheel, one end of the second connecting rod is rotationally connected with the second reciprocating shaft, and the other end of the second connecting rod is connected with a second cylinder; the second reciprocating shaft can do circular motion around the rotating wheel shaft, and the second reciprocating shaft can drive the second connecting rod to do reciprocating motion so as to repeatedly push and pull the second cylinder;
the movement direction of the second connecting rod is opposite to that of the first connecting rod at the same moment; the first intermittent pump and the second intermittent pump can alternately apply work to the negative pressure tank, so that continuous negative pressure suction to the negative pressure tank is realized.
Further, the driving unit comprises a motor and a driving gear, the motor is arranged on the mounting seat, and the driving gear is connected with the motor; the first rotating wheel is a gear and is connected with the driving gear.
Further, the first cylinder comprises a first cylinder barrel, a first piston, a first pipe connector, a first one-way valve and a second one-way valve, one end of the first cylinder barrel is a gas path end, the other end of the first cylinder barrel is an open end, the first pipe connector is arranged at the gas path end, and the first pipe connector is used for connecting the first cylinder barrel with a gas guide pipe; one end of the first piston is arranged at the opening end, and the other end of the first piston is connected with the first connecting rod; the first one-way valve is arranged at the air path end of the first cylinder barrel, and the second one-way valve is arranged between the first pipe interface and the first cylinder barrel; the first one-way valve is a one-way air outlet valve, and the second one-way valve is a one-way air inlet valve.
Further, the first intermittent pump pushes the first piston to move towards the air path end, the first one-way valve is used for discharging air in the first cylinder barrel, and the second one-way valve prevents the air from entering the air guide pipe; the first intermittent pump pulls the first piston to move towards the opening end, the first one-way valve prevents gas from entering the first cylinder barrel, and gas in the gas guide pipe enters the first cylinder barrel through the second one-way valve, so that negative pressure suction is generated to the negative pressure tank through the gas guide pipe.
Further, the second cylinder comprises a second cylinder barrel, a second piston, a second pipe joint, a third one-way valve and a fourth one-way valve, wherein the third one-way valve is a one-way air outlet valve, and the fourth one-way valve is a one-way air inlet valve; the structure of the second cylinder is the same as that of the first cylinder.
Further, the first reciprocating unit further comprises a connecting key, and the connecting key is arranged on the rotating shaft; the second reciprocating unit further comprises a connecting key groove, the connecting key groove is formed in the second rotating wheel, and the second rotating wheel is rotationally connected with the rotating wheel shaft.
Further, the second reciprocating unit further comprises a switching ring groove, and the switching ring groove is formed in the second rotating wheel; the suction machine further comprises a switching unit, and the switching unit is arranged on the mounting seat.
Further, the switching unit comprises a deflector rod and a shaft pin, and the shaft pin is connected with the mounting seat; the deflector rod is connected with the shaft pin and can rotate around the shaft pin; the deflector rod is connected with the switching ring groove.
Further, the switching unit further comprises a shifting rod sleeve and a positioning groove, the positioning groove is formed in the mounting seat, the shifting rod sleeve can slide along the shifting rod and can be inserted into or separated from the positioning groove, and therefore the shifting rod can be fixed or rotated.
Further, the switching unit further includes a drag reducing wheel rotatable around the shift lever, and the drag reducing wheel is rotatable following the second wheel when the second wheel is rotated.
Compared with the prior art, the invention has at least one of the following beneficial effects:
(1) The first intermittent pump of the thrombus suction device can reciprocate for a first positive pressure stroke and a first negative pressure stroke, so that the first cylinder can intermittently suck the negative pressure tank, thrombus can change shape or become loose in the intermittent suction process, and thrombus suction operation is facilitated;
(2) The second intermittent pump of the thrombus aspiration device of the present invention is capable of reciprocating a second positive pressure stroke and a second negative pressure stroke; when the first intermittent pump is in the first positive pressure stroke, the second intermittent pump can be in the second negative pressure stroke, and when the first intermittent pump does not suck, the second intermittent pump is used for sucking the negative pressure of the negative pressure tank through the air duct, the first intermittent pump and the second intermittent pump can alternately generate negative pressure, so that continuous suction of thrombus is realized, and the continuous suction efficiency and power are improved due to the use of two air cylinders;
(3) The connecting key of the thrombus suction device can be connected with the connecting key groove, and the rotating wheel shaft can drive the second rotating wheel and the first rotating wheel to synchronously rotate; the connecting key can be separated from the connecting key groove, and the second rotating wheel stops rotating; the switching unit can switch the state of the second rotating wheel in rotation or stopping by pulling the second rotating wheel and enabling the second rotating wheel to slide on the rotating wheel shaft and controlling the connection key to be connected with or separated from the connection key groove, so that switching operation between two operation states of continuous suction and intermittent suction is facilitated.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, like reference numerals being used to designate like parts throughout the drawings;
FIG. 1 is a schematic view showing the overall structure of a thrombus aspiration device;
FIG. 2 is a schematic view showing an exploded structure of the thrombus aspiration device;
FIG. 3 is a schematic view of the overall structure of the suction pump;
Fig. 4 is a schematic cross-sectional view of a suction pump.
Reference numerals:
1-a suction machine; 2-a negative pressure tank; a 3-drive unit; 4-a first reciprocation unit; 5-a first cylinder; 6-a second reciprocating unit; 7-a second cylinder; 8-a switching unit; 9-an airway; 10-a speed regulating knob; 11-a fuselage; 12-a negative pressure interface of the machine body; 13-a mounting base; 21-a tank; 22-suction tube; 23-a tank negative pressure interface; 31-an electric motor; 32-a drive gear; 41-a first runner; 42-a rotating shaft; 43-a rotating bearing; 44-a first reciprocating shaft; 45-a first link; 46-a linkage; 51-a first cylinder; 52-a first piston; 53-first pipe interface; 54-a first one-way valve; 55-a second one-way valve; 61-a second wheel; 62-a second reciprocating shaft; 63-a second link; 64-switching ring grooves; 71-a second cylinder; 72-a second piston; 73-a second pipe interface; 74-a third one-way valve; 75-a fourth one-way valve; 81-a deflector rod; 82-a shaft pin; 83-a setting bar sleeve; 84-positioning grooves; 85-drag reducing wheel.
Detailed Description
The following detailed description of preferred embodiments of the invention is made in connection with the accompanying drawings, which form a part hereof, and together with the description of the embodiments of the invention, are used to explain the principles of the invention and are not intended to limit the scope of the invention.
Example 1
In one embodiment of the invention, as shown in fig. 1 and 2, a thrombus aspiration device is disclosed, comprising an aspiration machine 1 and a negative pressure tank 2, wherein the aspiration machine 1 comprises a main body 11, a main body negative pressure port 12 and a suction pump, and the main body negative pressure port 12 and the suction pump are both arranged on the main body 11; the negative pressure tank 2 comprises a tank body 21, a suction pipe 22 and a tank body negative pressure interface 23, and the suction pipe 22 and the tank body negative pressure interface 23 are arranged on the tank body 21. The tank negative pressure port 23 can be connected with the body negative pressure port 12, and the suction pump can suck the negative pressure tank 2 into negative pressure through the tank negative pressure port 23 and the body negative pressure port 12, and thrombus and blood are sucked into the tank 21 through the suction tube 22.
Preferably, as shown in fig. 3, the suction machine 1 further comprises a mounting seat 13, the mounting seat 13 being provided on the body 11. The suction pump comprises a drive unit 3, a first intermittent pump and an air duct 9. The air duct 9 is communicated with the machine body negative pressure interface 12, and the driving unit 3 can drive the first intermittent pump to generate negative pressure and conduct the negative pressure to the machine body negative pressure interface 12 through the air duct 9. The first intermittent pump can realize intermittent negative pressure suction, and thrombus can change shape or become loose in the intermittent suction process, so that suction operation is facilitated.
Preferably, the driving unit 3 includes a motor 31 and a driving gear 32, the motor 31 is provided on the mount 13, the driving gear 32 is connected to the motor 31, and the motor 31 is used to power the driving gear 32.
Preferably, the first intermittent pump includes a first reciprocation unit 4 and a first cylinder 5. The first cylinder 5 is connected with the air duct 9, and the first reciprocating unit 4 can reciprocate and drive the first cylinder 5 to intermittently suck the negative pressure tank 2.
Preferably, as shown in fig. 3 and 4, the first reciprocation unit 4 includes a first runner 41, a runner shaft 42, a rotation bearing 43, a first reciprocation shaft 44, and a first link 45. The first rotating wheel 41 is a gear and is connected with the driving gear 32, and the driving gear 32 can drive the first rotating wheel 41 to rotate; the rotary shaft 42 and the first reciprocating shaft 44 are fixedly connected with the first rotary wheel 41, the rotary bearing 43 comprises an inner ring and an outer ring, the rotary shaft 42 is fixedly connected with the inner ring (not shown in the figure) of the rotary bearing 43, the outer ring (not shown in the figure) of the rotary bearing 43 is fixedly connected with the mounting seat 13, one end of the first connecting rod 45 is rotatably connected with the first reciprocating shaft 44, and the other end of the first connecting rod 45 is connected with the first cylinder 5. The first reciprocating shaft 44 can perform a circular motion around the rotating shaft 42 and drives the first link 45 to perform a reciprocating motion, so as to repeatedly push and pull the first cylinder 5.
Preferably, the first cylinder 5 comprises a first cylinder tube 51, a first piston 52 and a first tube interface 53. One end of the first cylinder 51 is an air passage end, the other end of the first cylinder 51 is an open end, the first pipe interface 53 is arranged at the air passage end, and the first pipe interface 53 is used for connecting the first cylinder 51 with the air duct 9; one end of the first piston 52 is provided at the open end, and the other end of the first piston 52 is connected to the first link 45. The first piston 52 is capable of reciprocating within the first cylinder 51, thereby creating a positive or negative pressure within the first cylinder 51 and within the first tube interface 53.
The thrombus aspiration device of this embodiment requires only negative pressure to aspirate the thrombus. Therefore, the first cylinder 5 further includes a first check valve 54 and a second check valve 55, the first check valve 54 being provided at the gas path end of the first cylinder tube 51, the second check valve 55 being provided between the first tube interface 53 and the first cylinder tube 51. The first one-way valve 54 is a one-way air outlet valve and the second one-way valve 55 is a one-way air inlet valve. The first intermittent pump includes a first positive pressure stroke and a first negative pressure stroke. In the stage that the first intermittent pump pushes the first piston 52, the first piston 52 moves towards the air path end, positive pressure is generated in the first cylinder 51, the first one-way valve 54 is used for discharging air in the first cylinder 51, the second one-way valve 55 prevents the air from entering the air duct 9, and at the moment, the first intermittent pump does not work on the negative pressure tank 2, and the stage is a first positive pressure stroke; in the stage where the first intermittent pump pulls the first piston 52, the first piston 52 moves toward the open end, the inside of the first cylinder 51 is negative pressure, the first check valve 54 prevents gas from entering the first cylinder 51, and gas in the gas-guide tube 9 enters the first cylinder 51 through the second check valve 55, so that negative pressure suction is generated to the negative pressure tank 2 through the gas-guide tube 9, and this stage is a first negative pressure stroke. The first intermittent pump performs negative pressure suction to the negative pressure tank 2 in the first negative pressure stroke stage, and the negative pressure suction is stopped in the first positive pressure stroke stage, and the first intermittent pump can perform intermittent negative pressure suction to the negative pressure tank 2.
Preferably, the thrombus aspiration device of this embodiment further comprises a speed adjusting knob 10 and a controller (not shown in the drawings), the controller being provided on the body 11, the speed adjusting knob 10 and the motor 31 being connected to the controller. The speed adjusting knob 10 is rotated, and the controller can control the rotation speed of the motor 31, thereby adjusting the suction frequency of the thrombus suction device of the present embodiment.
Preferably, the thrombus aspiration device of the present embodiment further comprises a pressure sensor (not shown in the figure) provided in the airway 9 and connected to the controller. The pressure sensor is used for measuring the vacuum degree in the air duct 9, and when the vacuum degree is smaller than a standard value in a unit time period, the suction tube 22 can be considered to be blocked, and at the moment, the controller can stop the rotation of the motor 31, and the thrombus suction device of the embodiment stops suction.
Preferably, the unit time period is 10-20s, and the calibration value is-700 mmHg to-800 mmHg.
Compared with the prior art, the first intermittent pump of the thrombus aspiration device of the present embodiment can reciprocate for a first positive pressure stroke and a first negative pressure stroke, thereby realizing intermittent aspiration of the negative pressure tank 2 by the first cylinder 5, and thrombus can change shape or become loose during intermittent aspiration, which is beneficial to aspiration operation.
Example 2
In another embodiment of the present invention, as shown in FIG. 3, a suction pump is modified based on the thrombus aspiration device of embodiment 1. Under the condition that thrombus is small and suction is smooth, intermittent suction efficiency is lower than continuous suction, and in order to save operation time and improve operation efficiency, the thrombus suction device of the embodiment is added with a thrombus continuous suction function.
Preferably, as shown in fig. 3 and 4, the suction pump further comprises a second intermittent pump, which is in communication with the air duct 9. The second intermittent pump comprises a second reciprocating unit 6 and a second cylinder 7. The second cylinder 7 is connected with the air duct 9, and the second reciprocating unit 6 can reciprocate and drive the second cylinder 7 to intermittently suck the negative pressure tank 2. The second intermittent pump includes a second positive pressure stroke and a second negative pressure stroke. When the first intermittent pump is in the first positive pressure stroke, the second intermittent pump can be in the second negative pressure stroke, when the first intermittent pump does not suck, the second intermittent pump is used for sucking the negative pressure of the negative pressure tank 2 through the air duct 9, the first intermittent pump and the second intermittent pump can alternately generate negative pressure, continuous suction of thrombus is realized, and suction efficiency is remarkably improved for intermittent suction.
Preferably, the second reciprocating unit 6 includes a second rotating wheel 61, a second reciprocating shaft 62, and a second connecting rod 63, the second rotating wheel 61 is connected to the rotating wheel shaft 42, the second reciprocating shaft 62 is connected to the second rotating wheel 61, one end of the second connecting rod 63 is rotatably connected to the second reciprocating shaft 62, and the other end of the second connecting rod 63 is connected to the second cylinder 7. The second reciprocating shaft 62 can perform circular motion around the rotating shaft 42, the second reciprocating shaft 62 and the first reciprocating shaft 44 are axially symmetrical relative to the rotating shaft 42, the second reciprocating shaft 62 can drive the second connecting rod 63 to perform reciprocating motion, so that the second cylinder 7 is repeatedly pushed and pulled, and the moving direction of the second connecting rod 63 and the moving direction of the first connecting rod 45 are completely opposite at the same time.
Preferably, the second cylinder 7 includes a second cylinder tube 71, a second piston 72, a second pipe joint 73, a third check valve 74, and a fourth check valve 75, and the second cylinder 7 has the same structure as the first cylinder 5.
The third check valve 74 is a check outlet valve and the fourth check valve 75 is a check inlet valve. In the second positive pressure stroke, the second intermittent pump pushes the second piston 72, positive pressure is generated in the second cylinder 71, the third one-way valve 74 is used for discharging gas in the second cylinder 71, the fourth one-way valve 75 prevents the gas from entering the gas guide pipe 9, and the second intermittent pump does not work on the negative pressure tank 2 at the moment; in the second negative pressure stroke, the second intermittent pump pulls the second piston 72, negative pressure is generated in the second cylinder 71, the third one-way valve 74 prevents gas from entering the second cylinder 71, and the gas in the gas duct 9 enters the second cylinder 71 through the fourth one-way valve 75, so that negative pressure suction is generated to the negative pressure tank 2 through the gas duct 9.
The second connecting rod 63 and the first connecting rod 45 are completely opposite in movement direction, during the first positive pressure stroke, the first intermittent pump pushes the first piston 52, the negative pressure suction of the negative pressure tank 2 by the first intermittent pump is stopped, the second intermittent pump is in the second negative pressure stroke, the second intermittent pump pulls the second piston 72, and the second intermittent pump can conduct negative pressure suction on the negative pressure tank 2; during the second positive pressure stroke, the second intermittent pump pushes the second piston 72, the negative pressure suction of the negative pressure tank 2 by the second intermittent pump is stopped, the first intermittent pump is in the first negative pressure stroke, the first intermittent pump pulls the first piston 52, and the first intermittent pump can perform negative pressure suction on the negative pressure tank 2, so that continuous suction on thrombus is achieved. For intermittent suction, the suction efficiency of continuous suction is significantly improved.
If the thrombus aspiration device of the present invention is implemented to switch between two operating states of continuous aspiration and intermittent aspiration, the thrombus aspiration operation will be greatly facilitated. Preferably, the first reciprocation unit 4 further includes a connection key 46, the connection key 46 being provided on the rotation shaft 42; the second reciprocating unit 6 further includes a connection key groove (not shown in the drawing) provided on the second runner 61, and the second runner 61 is rotatably connected to the runner shaft 42. The connecting key 46 can be connected with the connecting key groove, and the rotating wheel shaft 42 can drive the second rotating wheel 61 to synchronously rotate with the first rotating wheel 41; the connection key 46 can be disengaged from the connection key groove, and the second rotating wheel 61 stops rotating, so that the two operation states of continuous suction and intermittent suction can be switched.
Preferably, in order to facilitate the switching operation of the operation state, as shown in fig. 3 and 4, the second reciprocation unit 6 further includes a switching ring groove 64, the switching ring groove 64 being opened on the second rotating wheel 61; the suction machine 1 further comprises a switching unit 8, the switching unit 8 being arranged on a mounting seat 13. The switching unit 8 is connected with the switching ring groove 64, and the switching unit 8 can switch the state of the second rotating wheel 61 to be rotated or stopped by pulling the second rotating wheel 61 and enabling the second rotating wheel 61 to slide on the rotating wheel shaft 42 and controlling the connection key 46 to be connected with or separated from the connection key groove, so that the switching between the two operation states of continuous suction and intermittent suction is facilitated.
Preferably, the switching unit 8 includes a lever 81 and a shaft pin 82, the shaft pin 82 being connected with the mounting base 13; the deflector rod 81 is connected with the shaft pin 82 and can rotate around the shaft pin 82; the shift lever 81 is connected to the shift ring groove 64. The toggle lever 81 is toggled to toggle the second wheel 61 and slide the second wheel 61 on the wheel shaft 42.
Preferably, in order to lock the rotation angle of the lever 81 and thus the position of the second rotating wheel 61 on the rotating wheel shaft 42, the switching unit 8 further includes a lever sleeve 83 and a positioning groove 84, the positioning groove 84 is provided on the mounting base 13, the lever sleeve 83 is provided on the lever 81, the lever sleeve 83 is capable of sliding along the lever 81 and is capable of being inserted into or separated from the positioning groove 84, thereby being capable of fixing the lever 81 or rotating the lever 81. The positioning groove 84 includes a first groove and a second groove. When the poking rod sleeve 83 is inserted into the first groove, the connecting key 46 is connected with the connecting key groove, and the rotating wheel shaft 42 drives the second rotating wheel 61 to synchronously rotate with the first rotating wheel 41; when the setting lever sleeve 83 is inserted into the second groove, the connection key 46 is disengaged from the connection key groove, and the second rotating wheel 61 stops rotating.
Preferably, the switching unit 8 further includes a drag reducing wheel 85, the drag reducing wheel 85 being provided on the shift lever 81 and the drag reducing wheel 85 being rotatable around the shift lever 81, the drag reducing wheel 85 following the rotation of the second wheel 61 when the second wheel 61 rotates, thereby reducing wear on the shift lever 81.
When the thrombus sucking device of the embodiment is used, the poking rod 81 is poked and the poking rod sleeve 83 is inserted into the second groove, the connecting key 46 is separated from the connecting key groove, the second rotating wheel 61 does not rotate, the first intermittent pump pushes and pulls the first air cylinder 5, and negative pressure suction is intermittently generated on the negative pressure tank 2 through the air guide pipe 9; the poking rod 81 is poked, the poking rod sleeve 83 is inserted into the first groove, the connecting key 46 is connected with the connecting key groove, the rotating wheel shaft 42 drives the second rotating wheel 61 to synchronously rotate with the first rotating wheel 41, the first intermittent pump and the second intermittent pump simultaneously operate, and negative pressure suction is continuously generated on the negative pressure tank 2 through the air duct 9.
Compared with the prior art, the second intermittent pump of the thrombus aspiration device of the present embodiment can reciprocate for a second positive pressure stroke and a second negative pressure stroke; when the first intermittent pump is in the first positive pressure stroke, the second intermittent pump can be in the second negative pressure stroke, and when the first intermittent pump does not suck, the second intermittent pump is used for sucking the negative pressure of the negative pressure tank 2 through the air duct 9, the first intermittent pump and the second intermittent pump can alternately generate negative pressure, so that continuous suction of thrombus is realized, and the suction efficiency of continuous suction is obviously improved for intermittent suction; the connecting key 46 can be connected with the connecting key groove, and the rotating wheel shaft 42 can drive the second rotating wheel 61 to synchronously rotate with the first rotating wheel 41; the connection key 46 can be disengaged from the connection key groove, and the second rotating wheel 61 stops rotating; the switching unit 8 can switch the state of the second rotating wheel 61 to rotate or stop by pulling the second rotating wheel 61 and sliding the second rotating wheel 61 on the rotating wheel shaft 42 and controlling the connection key 46 to be connected with or separated from the connection key groove, thereby facilitating the switching between the two operation states of continuous suction and intermittent suction.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention.
Claims (8)
1. A thrombus aspiration device, characterized by comprising an aspiration machine (1) and a negative pressure tank (2), wherein the aspiration machine (1) comprises a mounting seat (13) and a suction pump, the suction pump comprises a driving unit (3), a first intermittent pump, a second intermittent pump and an air duct (9), and the air duct (9) is communicated with the negative pressure tank (2); the driving unit (3) is used for driving the first intermittent pump;
The first intermittent pump comprises a first reciprocating unit (4) and a first air cylinder (5), the second intermittent pump comprises a second reciprocating unit (6) and a second air cylinder (7), and the first air cylinder (5) and the second air cylinder (7) are connected with the air guide pipe (9);
The first reciprocating unit (4) comprises a first rotating wheel (41), a rotating wheel shaft (42), a rotating bearing (43), a first reciprocating shaft (44) and a first connecting rod (45), and the first rotating wheel (41) is connected with the driving unit (3); the rotating shaft (42) and the first reciprocating shaft (44) are fixedly connected with the first rotating wheel (41), the rotating bearing (43) comprises an inner ring and an outer ring, the rotating shaft (42) is fixedly connected with the inner ring of the rotating bearing (43), the outer ring of the rotating bearing (43) is fixedly connected with the mounting seat (13), and one end of the first connecting rod (45) is rotationally connected with the first reciprocating shaft (44); the first reciprocating shaft (44) can do circular motion around the rotating wheel shaft (42) and drives the first connecting rod (45) to do reciprocating motion so as to repeatedly push and pull the first cylinder (5);
The second reciprocating unit (6) comprises a second rotating wheel (61), a second reciprocating shaft (62) and a second connecting rod (63), the second rotating wheel (61) is connected with the rotating wheel shaft (42), the second reciprocating shaft (62) is connected with the second rotating wheel (61), one end of the second connecting rod (63) is rotationally connected with the second reciprocating shaft (62), and the other end of the second connecting rod (63) is connected with the second air cylinder (7); the second reciprocating shaft (62) can do circular motion around the rotating wheel shaft (42), and the second reciprocating shaft (62) can drive the second connecting rod (63) to do reciprocating motion so as to repeatedly push and pull the second air cylinder (7);
The second connecting rod (63) and the first connecting rod (45) move in opposite directions at the same moment; the first intermittent pump and the second intermittent pump can alternately apply work to the negative pressure tank (2) to realize continuous negative pressure suction to the negative pressure tank (2);
The first cylinder (5) comprises a first cylinder barrel (51), a first piston (52), a first pipe interface (53), a first one-way valve (54) and a second one-way valve (55), one end of the first cylinder barrel (51) is an air path end, the other end of the first cylinder barrel (51) is an open end, the first pipe interface (53) is arranged at the air path end, and the first pipe interface (53) is used for connecting the first cylinder barrel (51) with an air duct (9); one end of the first piston (52) is arranged at the opening end, and the other end of the first piston (52) is connected with the first connecting rod (45); the first one-way valve (54) is arranged at the air path end of the first cylinder barrel (51), and the second one-way valve (55) is arranged between the first pipe interface (53) and the first cylinder barrel (51); the first one-way valve (54) is a one-way air outlet valve, and the second one-way valve (55) is a one-way air inlet valve;
the second cylinder (7) comprises a second cylinder barrel (71), a second piston (72), a second pipe connector (73), a third one-way valve (74) and a fourth one-way valve (75), wherein the third one-way valve (74) is a one-way air outlet valve, and the fourth one-way valve (75) is a one-way air inlet valve.
2. The thrombus aspiration device according to claim 1, wherein said drive unit (3) comprises a motor (31) and a drive gear (32), said motor (31) being arranged on the mounting seat (13), said drive gear (32) being connected to the motor (31); the first rotating wheel (41) is a gear and is connected with the driving gear (32).
3. The thrombus aspiration device according to claim 1, wherein said first intermittent pump is able to push a first piston (52) towards said air passage end, said first one-way valve (54) allowing the evacuation of the air inside the first cylinder (51), said second one-way valve (55) preventing the entry of air into the air duct (9); the first intermittent pump can pull the first piston (52) to move towards the opening end, the first one-way valve (54) can prevent gas from entering the first cylinder barrel (51), and gas in the gas guide pipe (9) can enter the first cylinder barrel (51) through the second one-way valve (55), so that negative pressure suction is generated to the negative pressure tank (2) through the gas guide pipe (9).
4. The thrombus aspiration device according to claim 1, wherein said first reciprocation unit (4) further comprises a connection key (46), said connection key (46) being provided on a rotation shaft (42); the second reciprocating unit (6) further comprises a connecting key groove, the connecting key groove is formed in the second rotating wheel (61), and the second rotating wheel (61) is rotationally connected with the rotating wheel shaft (42).
5. The thrombus aspiration device according to claim 4, wherein said second reciprocating unit (6) further comprises a switching ring groove (64), said switching ring groove (64) being open on the second wheel (61); the suction machine (1) further comprises a switching unit (8), and the switching unit (8) is arranged on the mounting seat (13).
6. The thrombus aspiration device according to claim 5, wherein said switching unit (8) comprises a lever (81) and a pin (82), said pin (82) being connected to a mounting seat (13); the deflector rod (81) is connected with the shaft pin (82) and can rotate around the shaft pin (82); the deflector rod (81) is connected with the switching ring groove (64).
7. The thrombus aspiration device according to claim 6, wherein said switching unit (8) further comprises a lever sleeve (83) and a positioning groove (84), said positioning groove (84) being provided on the mounting seat (13), said lever sleeve (83) being slidable along the lever (81) and being insertable into or releasable from the positioning groove (84) so as to be able to fix the lever (81) or rotate the lever (81).
8. The thrombus aspiration device according to claim 7, wherein said switching unit (8) further comprises a drag reducing wheel (85), said drag reducing wheel (85) being rotatable about a shift lever (81), said drag reducing wheel (85) being rotatable following the second wheel (61) upon rotation of said second wheel (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311824289.4A CN117462210B (en) | 2023-12-28 | 2023-12-28 | Thrombus suction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311824289.4A CN117462210B (en) | 2023-12-28 | 2023-12-28 | Thrombus suction device |
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| CN117462210A CN117462210A (en) | 2024-01-30 |
| CN117462210B true CN117462210B (en) | 2024-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311824289.4A Active CN117462210B (en) | 2023-12-28 | 2023-12-28 | Thrombus suction device |
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| WO2023049802A1 (en) * | 2021-09-22 | 2023-03-30 | Microvention, Inc. | Aspiration thrombectomy system |
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| CN116458963A (en) * | 2023-06-19 | 2023-07-21 | 深圳市飞梵实业有限公司 | Neural intervention thrombus taking and thrombolysis device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102698328B (en) * | 2012-06-08 | 2014-12-03 | 李广成 | Double-container balanced lavaging device for hematoma remover |
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| JP2006346440A (en) * | 2005-04-25 | 2006-12-28 | National Cardiovascular Center | Artificial pump driving device |
| WO2019024678A1 (en) * | 2017-08-01 | 2019-02-07 | 微创心脉医疗科技（上海）有限公司 | Thrombus removal apparatus |
| CN111938750A (en) * | 2020-09-14 | 2020-11-17 | 上海沃比医疗科技有限公司 | Hand-held thrombus negative pressure suction pump |
| WO2023049802A1 (en) * | 2021-09-22 | 2023-03-30 | Microvention, Inc. | Aspiration thrombectomy system |
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| CN117462210A (en) | 2024-01-30 |
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