CN114129815A - Automatic deep vein thrombolytic device - Google Patents
Automatic deep vein thrombolytic device Download PDFInfo
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- CN114129815A CN114129815A CN202111442486.0A CN202111442486A CN114129815A CN 114129815 A CN114129815 A CN 114129815A CN 202111442486 A CN202111442486 A CN 202111442486A CN 114129815 A CN114129815 A CN 114129815A
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- moving block
- mounting
- screw rod
- base
- mounting groove
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- 239000003146 anticoagulant agent Substances 0.000 title claims description 22
- 210000003462 vein Anatomy 0.000 title claims description 22
- 230000002537 thrombolytic effect Effects 0.000 title claims description 17
- 238000005086 pumping Methods 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims abstract description 8
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 208000007536 Thrombosis Diseases 0.000 claims description 12
- 230000006978 adaptation Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 6
- 238000001179 sorption measurement Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 229940127219 anticoagulant drug Drugs 0.000 description 7
- 230000003044 adaptive effect Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001990 intravenous administration Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920001875 Ebonite Polymers 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 238000002627 tracheal intubation Methods 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M39/223—Multiway valves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/14212—Pumping with an aspiration and an expulsion action
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pulmonology (AREA)
- Vascular Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to the field of medical instruments. The device comprises a base, wherein the upper surface of the base is provided with two strip-shaped first mounting grooves for placing an injector and a second mounting groove for mounting a three-way valve and matched with the three-way valve; the first mounting groove is communicated with the second mounting groove; a pumping and discharging driving mechanism is arranged on the upper surface of the base between the two first mounting grooves, the pumping and discharging driving mechanism comprises a screw rod and a moving block, the screw rod is arranged along the length direction of the base, the moving block is arranged on the screw rod, and one end of the screw rod is in transmission connection with a driving motor; the moving block is sleeved on the screw rod and forms threaded fit with the screw rod. According to the invention, the screw rod drives the moving block, so that the operation on the injector is more stable when negative pressure is constructed, the misoperation risk is reduced, the integral safety is improved, the device can be directly matched with the existing injector and a three-way valve, and the assembly is flexible.
Description
Technical Field
The invention relates to the field of diagnosis and treatment instruments, in particular to an automatic deep vein thrombolytic device.
Background
The PICC technology is short for a central vein catheterization technology through peripheral venipuncture, and is characterized in that a PICC catheter is used for puncturing and intubation from a basilic vein, an elbow median vein and a cephalic vein until the PICC catheter is inserted into a central vein. The PICC tube is mainly used for providing medium-term and long-term intravenous infusion treatment for patients, can reach about one year at most, can avoid irreversible damage caused by long-term repeated puncture of veins, reduces stimulation of medicines to peripheral veins, and provides a stable channel for long-term intravenous administration.
In the using process of the PICC tube, thrombolysis operation is an important maintenance step for ensuring the normal use of the PICC tube, and in the traditional thrombolysis step, the operation mainly comprises the following steps of connecting a PICC catheter, a dosing injector containing anticoagulant and a suction injector through a three-way valve; adjusting the three-way valve to the state that the PICC catheter is communicated with the suction injector, and extracting the catheter-sealing medicine in the catheter by using the suction injector; then the three-way valve is adjusted to the state that the PICC catheter is communicated with the dosing injector, and anticoagulant is sucked into the PICC catheter by utilizing the negative pressure formed in the PICC catheter; the above operations are repeated until the thrombus is completely dissolved and eliminated.
When a suction syringe is used for constructing negative pressure, the existing regulations require the use of a syringe with the volume of more than 10ml to buffer the suction force and avoid the rupture of a catheter caused by overlarge suction force. However, in actual operation, the control of the suction force and the control of the suction speed mainly depend on the operation experience of medical personnel, which increases certain risk for thrombolysis. In addition, in order to avoid infection, the injector, the three-way valve and the like belong to disposable consumables, are not suitable for being designed to be too complex and not suitable for being too high in cost, and can be preferably directly matched with the existing consumables; for this reason, it is a difficult problem in the art to find an appropriate balance between the improvement of the operation stability and the control cost.
Disclosure of Invention
The invention aims to provide an automatic deep vein thrombolytic device which is stable and reliable in operation.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows: the deep vein automatic thrombolytic device comprises a base, wherein the upper surface of the base is provided with two strip-shaped first mounting grooves for placing an injector and a second mounting groove which is used for mounting a three-way valve and is matched with the three-way valve; the first mounting groove is communicated with the second mounting groove;
a pumping and discharging driving mechanism is arranged on the upper surface of the base between the two first mounting grooves, the pumping and discharging driving mechanism comprises a screw rod and a moving block, the screw rod is arranged along the length direction of the base, the moving block is arranged on the screw rod, and one end of the screw rod is in transmission connection with a driving motor; the moving block is sleeved on the screw rod and forms threaded fit with the screw rod; the lower parts of two sides of the moving block are provided with inverted trapezoidal guide blocks, the upper surfaces of the bases on two sides of the screw rod are also provided with guide grooves extending along the length direction of the screw rod, and the guide blocks are matched with the guide grooves and clamped in the guide grooves; and the moving block is also provided with a connecting rod used for being connected with a piston handle of the injector.
Preferably, the driving motor is electrically connected with a controller, and the controller is installed inside the base; the rear side of base upper surface is provided with operating unit and display element, display element and operating unit respectively with controller electric connection.
Preferably, the display unit and the operation unit are constituted by a touch display screen.
Preferably, the center of the moving block is provided with a mounting circular hole, a driving ring is arranged in the mounting circular hole, the driving ring and the moving block form a rotating fit, and the screw rod is arranged in the circular hole of the driving ring in a penetrating manner and forms a threaded fit with the driving ring; one side of the moving block is also provided with a pressure limiting assembly, the pressure limiting assembly comprises an adjusting hole which is arranged on one side surface of the moving block and transversely penetrates through the mounting round hole, the outer end of the adjusting hole is matched with an adjusting bolt, the adjusting bolt is in threaded fit with the adjusting hole, and a pressure limiting spring and a pressure limiting ball are sequentially arranged in the adjusting hole at the inner end of the adjusting bolt along the direction far away from the adjusting bolt; the side wall of the driving ring is provided with an arc-shaped groove matched with the pressure limiting ball, and the pressure limiting ball is propped against the arc-shaped groove through a pressure limiting spring;
the upper surface of the base is also provided with a position detection sensor for detecting the position of the moving block, and the position detection sensor is electrically connected with the controller.
Preferably, a circle of annular edge is arranged on each of the side walls at the two ends of the driving ring along the circumferential direction, and the moving block is clamped between the two annular edges of the driving ring.
Preferably, the connecting rod comprises a crank arm section and a chuck section, a U-shaped groove is formed in the top of the moving block, and one end, far away from the chuck section, of the crank arm section is fixed in the U-shaped groove through a connecting screw; the chuck section is Y-shaped.
Preferably, be provided with the adaptation pad in the first mounting groove, the outer fringe and the first mounting groove of adaptation pad cooperate, and the adaptation is stacked up and is provided with the model assorted with the syringe, supplies the constant head tank of syringe joint.
Preferably, the second mounting groove is Y-shaped, the upper surfaces of the bases corresponding to two Y-shaped branches of the second mounting groove are respectively provided with a cut-off component, each cut-off component comprises a mounting frame in a shape like a Chinese character 'ji', one end of each mounting frame is hinged with the corresponding base, and the other end of each mounting frame is detachably connected with the corresponding base through a locking piece; the top of mounting bracket is provided with miniature electric push rod, miniature electric push rod's output is down, and the tip is provided with the floodgate head with second mounting groove matched with.
Preferably, the locking member is a magnetic attraction sheet.
The beneficial effects of the invention are concentrated and expressed as follows: the moving block is driven by the screw rod, so that the operation of the injector is more stable when negative pressure is constructed, the misoperation risk is reduced, the overall safety is improved, the universal joint can be directly completed with the existing injector and the three-way valve, and the assembly is flexible. Specifically, in the using process, the three-way valve is arranged in the second mounting groove and is well assembled with the PICC catheter; then an injector containing anticoagulant and an evacuated suction injector are respectively arranged in the first mounting groove, and after the injector and the suction injector are fixed, the injector is connected with the three-way valve. Then the driving motor stably operates according to a preset suction mode, the driving motor drives the screw rod to move, the screw rod drives the moving block to move along the guide groove in the rotating process, and then the piston handle of the injector is driven to move through the connecting rod, so that suction action is realized, and negative pressure is constructed; after the negative pressure construction is finished, the flow direction of the three-way valve is switched, and the anticoagulant is automatically sucked into the PICC catheter through the negative pressure in the PICC catheter; when the thrombus is serious, the steps are repeated until the thrombus is completely dissolved, and the observation of the thrombus condition can be carried out by matching with real-time ultrasonic detection. Compared with the traditional mode of simply operating by medical personnel, the invention reduces the operation difficulty and the error risk, lightens the labor intensity of the medical personnel, and can directly utilize the existing injector and the three-way valve to be very convenient to use.
Drawings
FIG. 1 is a schematic structural diagram of a top view of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic view of the internal structure of a preferred embodiment of the moving mass;
FIG. 4 is a side view of the drive ring;
FIG. 5 is a schematic view of a block assembly;
fig. 6 is a schematic diagram of the structure of the adapter pad.
Detailed Description
Referring to fig. 1-6, the deep vein automatic thrombolytic device comprises a base 1, wherein the base 1 can be made of different materials such as plastic and stainless steel, preferably plastic, and has the advantages of light weight, high strength, corrosion resistance and the like. The specific shape and the like of the base 1 have sufficient design margin according to the specific design requirements of the product model, for example, the shape of circle, square, rectangle and the like is feasible, and as shown in fig. 1, the base 1 is rectangular.
In order to facilitate the installation of the three-way valve 3 and the injector 0, as shown in fig. 1, the upper surface of the base 1 of the present invention is provided with two first installation grooves 2 having a long bar shape for installing the injector 0, and a second installation groove 4 for installing the three-way valve 3 and matching with the three-way valve 3. The first mounting groove 2 is communicated with the second mounting groove 4, so that the connection between the injector 0 and the three-way valve 3 is facilitated. The two first mounting grooves 2 are respectively used for mounting a syringe containing anticoagulant drugs and a suction syringe. The shape of the second mounting groove 4 is matched with the three-way valve 3, the commonly used three-way valve 3 can be a traditional hand-rotating three-way valve, and the switching of the conduction direction of the three-way valve is realized by controlling a knob on the three-way valve. However, in order to improve the automation control level and reduce the electric control difficulty, the three-way valve 3 can also be a silica gel three-way pipe, and the on-off of the three-way pipe is directly controlled by a cut-off component arranged on the base 1 so as to realize the function of the three-way valve 3.
As shown in fig. 1 and 5, the second mounting groove 4 is Y-shaped, the upper surface of the base 1 corresponding to two forks of the second mounting groove 4Y is provided with a cut-off component respectively, the cut-off component includes a mounting frame 23 shaped like a Chinese character ji, one end of the mounting frame 23 is hinged to the base 1, the other end is detachably connected to the base 1 through a locking piece 24, and the locking piece 24 can adopt the form of a snap, a hook and loop fastener, and the like, and also can adopt the form of a magnetic absorption sheet. The top of mounting bracket 23 is provided with miniature electric push rod 25, miniature electric push rod 25's output is down, and the tip is provided with the floodgate head 26 with second mounting groove 4 matched with. When the corresponding passage needs to be cut off, the output end of the miniature electric push rod 25 extends out to drive the gate head 26 to cut off the three-way pipe.
In the using process of the invention, considering that the models of the syringes 0 used by each using terminal are different greatly, in order to improve the overall compatibility and adapt to the syringes 0 of different models, in combination with the drawings of fig. 1 and 6, an adaptive pad 21 is arranged in the first mounting groove 2, the outer edge of the adaptive pad 21 is matched with the first mounting groove 2, the first mounting groove 2 generally adopts a long groove with a square cross section, the adaptive pad 21 is clamped in the first mounting groove 2, a positioning groove 22 matched with the models of the syringes 0 and used for clamping the syringes 0 is arranged on the adaptive pad 21, the specific shape of the positioning groove 22 is determined so as to realize stable clamping and fixing of the syringes 0 and not influence the functions of other parts, and the adaptive pad 21 generally adopts a low-elasticity hard rubber pad. The present invention can be equipped with several adapter pads 21 for different types of syringes 0 to meet different usage requirements.
In order to realize automatic pumping, negative pressure is constructed. As shown in fig. 1-4, a pumping and discharging driving mechanism is arranged on the upper surface of the base 1 between the two first mounting grooves 2, the pumping and discharging driving mechanism comprises a screw rod 5 arranged along the length direction of the base 1 and a moving block 6 arranged on the screw rod 5, and one end of the screw rod 5 is in transmission connection with a driving motor 7. The moving block 6 is sleeved on the screw rod 5 and forms threaded fit with the screw rod 5, so that a screw nut pair structure is formed. The moving block 6 is controlled to move stably by the action of the driving motor 7. The driving motor 7 adopts a stepping motor, and the control precision is higher. In order to improve the motion stability of the moving block 6, the lower parts of two sides of the moving block 6 are provided with inverted trapezoidal guide blocks 8, the upper surfaces of the bases 1 of two sides of the screw 5 are also provided with guide grooves 9 extending along the length direction of the screw 5, and the guide blocks 8 are matched with the guide grooves 9 and clamped in the guide grooves 9. The moving block 6 is further provided with a connecting rod 10 for connecting with a piston handle of the injector 0. The specific shape and fixing mode of the connecting rod 10 only need to be satisfied with the pushing of various types of piston handles, as shown in fig. 1 and 2, the connecting rod 10 comprises a crank arm section and a chuck section, the top of the moving block 6 is provided with a U-shaped groove, one end of the crank arm section, which is far away from the chuck section, is fixed in the U-shaped groove through a connecting screw, and the chuck section is in a Y shape.
In the using process, the three-way valve 3 is arranged in the second mounting groove 4 and is well assembled with the PICC catheter; then, a syringe 0 containing an anticoagulant (i.e., an upper syringe 0 in fig. 1) and an evacuated aspiration syringe 0 (i.e., a lower syringe 0 in fig. 1) are respectively installed in the first installation groove 2, and after being fixed, the syringe 0 is connected to the three-way valve 3. Then the driving motor 7 stably operates according to a preset suction mode, the driving motor 7 drives the screw rod 5 to move, the screw rod 5 drives the moving block 6 to move along the guide groove 9 in the rotating process, and then the connecting rod 10 drives the piston handle of the injector 0 to move, so that suction action is realized, and negative pressure is constructed; after the negative pressure construction is finished, the flow direction of the three-way valve 3 is switched, and the anticoagulant is automatically sucked into the PICC catheter through the negative pressure in the PICC catheter; when the thrombus is serious, the steps are repeated until the thrombus is completely dissolved, and the observation of the thrombus condition can be carried out by matching with real-time ultrasonic detection. Compared with the traditional mode of simply operating by medical personnel, the invention reduces the operation difficulty and the error risk, lightens the labor intensity of the medical personnel, and can directly utilize the existing injector 0 and the three-way valve 3 for convenient use.
Of course, to realize the electric control automation control of each component, obviously, the invention should also have a controller, because the overall control logic is simple, the controller can be a small-sized singlechip. The electric control components such as the driving motor 7 and the micro electric push rod 25 are electrically connected with the controller, and the controller is installed inside the base 1. An operation unit 11 and a display unit 12 are arranged on the rear side of the upper surface of the base 1, and the display unit 12 and the operation unit 11 are respectively electrically connected with the controller. The display unit 12 can be an LCD display screen, an LED display screen, or an electronic tube display; the operation unit 11 may be a push-button operation unit, and the operation unit 11 is used as a human-computer interaction interface, so that a user can conveniently set various parameters in real time, for example: suction volume, three-way valve 3 switching time, etc., to form a complete control logic. In order to further improve the convenience of operation, the display unit 12 and the operation unit 11 are constituted by a touch display screen.
In addition, since the aspiration process of the syringe 0 for creating negative pressure is influenced by the thrombus length, the thrombus strength, other practical factors, and the like, the preset aspiration volume and the like are not necessarily completely adapted to the requirement of negative pressure aspiration, for example: the volume of each suction is preset to be 2ml, and the constructed negative pressure meets the requirement due to low blockage degree of the common thrombus; however, in the case of a more severe thrombus, an excessive negative pressure may build up, causing a PICC catheter burden. Therefore, in order to further improve the safety of the invention in the application process, the invention can also have a pressure limiting function, namely, the invention has a power tripping function when the resistance is too large in the process of pushing the piston handle.
The specific design scheme is as follows: as shown in fig. 3, a mounting circular hole is formed in the center of the moving block 6, a driving ring 13 is disposed in the mounting circular hole, the driving ring 13 and the moving block 6 form a rotating fit, in order to ensure the stability of the driving ring 13 in the mounting circular hole, as shown in fig. 4, a ring of annular edges 20 are circumferentially disposed on the side walls of both ends of the driving ring 13, and the moving block 6 is clamped between the two annular edges 20 of the driving ring 13. The moving block 6 of the invention is not directly in threaded engagement with the screw 5, but the screw 5 is inserted into the annular hole of the driving ring 13 and is in threaded engagement with the driving ring 13. Under normal conditions, the moving block 6 is locked with the driving ring 13, so that power transmission can be realized, and the moving block 6 is driven to move. However, when the resistance is too large, the power is released by disengaging (forming relative rotation) the drive ring 13 from the moving block 6.
In order to realize the functions, as shown in fig. 4, a pressure limiting assembly is further arranged on one side of the moving block 6, the pressure limiting assembly comprises an adjusting hole 14 which is arranged on one side surface of the moving block 6 and transversely penetrates through the mounting circular hole, an adjusting bolt 15 is adapted to the outer end of the adjusting hole 14, the adjusting bolt 15 is in threaded fit with the adjusting hole 14, and a pressure limiting spring 16 and a pressure limiting ball 17 are sequentially arranged in the adjusting hole 14 at the inner end of the adjusting bolt 15 along the direction far away from the adjusting bolt 15. The side wall of the driving ring 13 is provided with an arc groove 18 matched with a pressure limiting ball 17, the pressure limiting ball 17 is abutted against the arc groove 18 through a pressure limiting spring 16, and the pressure limiting spring 16 is a soft spring with low rigidity.
Under the normal use condition, the pressure limiting spring 16 presses the pressure limiting ball 17 in the arc-shaped groove 18, and the driving ring 13 and the moving block 6 can be taken as a whole. When the resistance is too large, the pressure limiting ball 17 is doubled and pressed back into the joint hole 14, at the moment, the moving block 6 and the driving ring 13 rotate relatively, and the rotation of the screw 5 does not provide driving force any more. By adjusting the adjusting bolt 15, the compression amount of the pressure limiting spring 16 can be changed, and the magnitude of the pressure limiting value can be further changed. When the driving ring 13 no longer provides driving force to the moving block 6, which means that the constructed negative pressure is too large, the conducting direction of the three-way valve 3 should be switched to suck the anticoagulant. In order to detect whether the driving ring 13 continues to provide the driving force for the moving block 6, the simplest way of the present invention is to provide a position detecting sensor 19 on the upper surface of the base 1 for detecting the position of the moving block 6, and the position detecting sensor 19 is electrically connected to the controller. Whether the negative pressure limit is reached can be known by detecting whether the moving block 6 moves.
Claims (9)
1. The utility model provides an automatic thrombus dissolving device of dark vein which characterized in that: the device comprises a base (1), wherein the upper surface of the base (1) is provided with two strip-shaped first mounting grooves (2) for placing an injector (0) and one second mounting groove (4) which is used for mounting a three-way valve (3) and is matched with the three-way valve (3); the first mounting groove (2) is communicated with the second mounting groove (4);
a pumping and discharging driving mechanism is arranged on the upper surface of the base (1) between the two first mounting grooves (2), the pumping and discharging driving mechanism comprises a screw rod (5) arranged along the length direction of the base (1) and a moving block (6) arranged on the screw rod (5), and one end of the screw rod (5) is in transmission connection with a driving motor (7); the moving block (6) is sleeved on the screw rod (5) and forms threaded fit with the screw rod (5); the lower parts of two sides of the moving block (6) are provided with inverted trapezoidal guide blocks (8), the upper surfaces of the bases (1) on two sides of the screw rod (5) are also provided with guide grooves (9) extending along the length direction of the screw rod (5), and the guide blocks (8) are matched with the guide grooves (9) and clamped in the guide grooves (9); the moving block (6) is also provided with a connecting rod (10) which is used for being connected with a piston handle of the injector (0).
2. The deep vein automatic thrombolytic device of claim 1, wherein: the driving motor (7) is electrically connected with the controller, and the controller is installed inside the base (1); the rear side of the upper surface of the base (1) is provided with an operation unit (11) and a display unit (12), and the display unit (12) and the operation unit (11) are respectively electrically connected with the controller.
3. The deep vein automatic thrombolytic device of claim 2, wherein: the display unit (12) and the operation unit (11) are formed by touch display screens.
4. The deep vein automatic thrombolytic device of claim 3, wherein: a mounting circular hole is formed in the center of the moving block (6), a driving ring (13) is arranged in the mounting circular hole, the driving ring (13) and the moving block (6) form a rotating fit, and the screw (5) penetrates through the annular hole of the driving ring (13) and forms a threaded fit with the driving ring (13); a pressure limiting assembly is further arranged on one side of the moving block (6), the pressure limiting assembly comprises an adjusting hole (14) which is arranged on one side face of the moving block (6) and transversely penetrates through the mounting round hole, an adjusting bolt (15) is adapted to the outer end of the adjusting hole (14), the adjusting bolt (15) is in threaded fit with the adjusting hole (14), and a pressure limiting spring (16) and a pressure limiting ball (17) are sequentially arranged in the adjusting hole (14) at the inner end of the adjusting bolt (15) in the direction away from the adjusting bolt (15); an arc-shaped groove (18) matched with the pressure limiting ball (17) is formed in the side wall of the driving ring (13), and the pressure limiting ball (17) is abutted against the arc-shaped groove (18) through a pressure limiting spring (16);
the upper surface of the base (1) is also provided with a position detection sensor (19) for detecting the position of the moving block (6), and the position detection sensor (19) is electrically connected with the controller.
5. The deep vein automatic thrombolytic device of claim 4, wherein: the side walls at two ends of the driving ring (13) are provided with a circle of annular edges (20) along the circumferential direction, and the moving block (6) is clamped between the two annular edges (20) of the driving ring (13).
6. The deep vein automatic thrombolytic device of claim 5, wherein: the connecting rod (10) comprises a crank arm section and a chuck section, a U-shaped groove is formed in the top of the moving block (6), and one end, far away from the chuck section, of the crank arm section is fixed in the U-shaped groove through a connecting screw; the chuck section is Y-shaped.
7. The deep vein automatic thrombolytic device of claim 6, wherein: be provided with adaptation pad (21) in first mounting groove (2), the outer fringe and the first mounting groove (2) of adaptation pad (21) cooperate, be provided with on adaptation pad (21) with model assorted of syringe (0), supply constant head tank (22) of syringe (0) joint.
8. The deep vein automatic thrombolytic device of claim 7, wherein: the second mounting groove (4) is Y-shaped, the upper surfaces of the bases (1) corresponding to two Y-shaped branches of the second mounting groove (4) are respectively provided with a cut-off component, each cut-off component comprises a mounting frame (23) shaped like a Chinese character 'ji', one end of each mounting frame (23) is hinged to the corresponding base (1), and the other end of each mounting frame is detachably connected with the corresponding base (1) through a locking piece (24); the top of mounting bracket (23) is provided with miniature electric push rod (25), the output of miniature electric push rod (25) is down, and the tip is provided with and second mounting groove (4) matched with floodgate head (26).
9. The deep vein automatic thrombolytic device of claim 8, wherein: the locking piece (24) is a magnetic adsorption piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111442486.0A CN114129815B (en) | 2021-11-30 | 2021-11-30 | Automatic deep vein thrombolysis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN114129815B (en) | 2024-02-02 |
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