CN107982588B - Anticoagulation pump for blood purification - Google Patents
Anticoagulation pump for blood purification Download PDFInfo
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- CN107982588B CN107982588B CN201711216819.1A CN201711216819A CN107982588B CN 107982588 B CN107982588 B CN 107982588B CN 201711216819 A CN201711216819 A CN 201711216819A CN 107982588 B CN107982588 B CN 107982588B
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- nut
- needle tube
- baffle
- gear
- push plate
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- 239000008280 blood Substances 0.000 title claims abstract description 26
- 210000004369 blood Anatomy 0.000 title claims abstract description 26
- 230000010100 anticoagulation Effects 0.000 title claims abstract description 18
- 238000000746 purification Methods 0.000 title claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 56
- 230000000149 penetrating effect Effects 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 238000003825 pressing Methods 0.000 claims abstract description 10
- 230000001360 synchronised effect Effects 0.000 claims description 11
- 230000007246 mechanism Effects 0.000 claims description 7
- 239000003146 anticoagulant agent Substances 0.000 claims description 6
- 229940127219 anticoagulant drug Drugs 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 15
- 238000001631 haemodialysis Methods 0.000 description 8
- 230000000322 hemodialysis Effects 0.000 description 8
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 238000011282 treatment Methods 0.000 description 7
- 238000012544 monitoring process Methods 0.000 description 6
- 239000002585 base Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- HTTJABKRGRZYRN-UHFFFAOYSA-N Heparin Chemical compound OC1C(NC(=O)C)C(O)OC(COS(O)(=O)=O)C1OC1C(OS(O)(=O)=O)C(O)C(OC2C(C(OS(O)(=O)=O)C(OC3C(C(O)C(O)C(O3)C(O)=O)OS(O)(=O)=O)C(CO)O2)NS(O)(=O)=O)C(C(O)=O)O1 HTTJABKRGRZYRN-UHFFFAOYSA-N 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 229960002897 heparin Drugs 0.000 description 4
- 229920000669 heparin Polymers 0.000 description 4
- 230000004087 circulation Effects 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 238000012959 renal replacement therapy Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012510 hollow fiber Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 208000009304 Acute Kidney Injury Diseases 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 206010019670 Hepatic function abnormal Diseases 0.000 description 1
- 208000033626 Renal failure acute Diseases 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 201000011040 acute kidney failure Diseases 0.000 description 1
- 208000012998 acute renal failure Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 208000020832 chronic kidney disease Diseases 0.000 description 1
- 208000022831 chronic renal failure syndrome Diseases 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000520 microinjection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
- A61M1/3672—Means preventing coagulation
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3327—Measuring
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Cardiology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses an anticoagulation pump for blood purification, which comprises a frame structure surrounded by a front baffle, a rear baffle, a left baffle and a right baffle, wherein a control circuit board is arranged above the frame structure, a transmission screw is arranged between the front baffle and the rear baffle in a penetrating way, a sliding part is arranged on the transmission screw, a transmission rod is arranged on the rear baffle in a penetrating way, one end of the transmission rod is connected with the sliding part, and the other end of the transmission rod is connected with a tail clamp part; a metal card is fixed on the sliding part, a position sensor is electrically connected to the control circuit board, and a first plectrum on the position sensor is clamped into the metal card; the lower part of the frame structure is provided with a needle tube seat, the lower part of the needle tube seat is connected with a needle tube pressing plate, the needle tube pressing plate is provided with a moving rod, the fixed seat is movably provided with a clamping ring, the control circuit board is electrically connected with a pipe diameter detection sensor, and a second poking piece on the pipe diameter detection sensor is clamped into the clamping ring. The invention has simple structure, convenient use, low manufacturing cost and higher reliability and safety.
Description
Technical Field
The invention belongs to the technical field of medical appliances, and particularly relates to an anticoagulant pump for blood purification.
Background
Hemodialysis (HD) is one of the renal replacement therapies for patients with acute and chronic renal failure. The method comprises the steps of draining in-vivo blood to the outside of the body, passing through a dialyzer consisting of innumerable hollow fibers, wherein the blood and electrolyte solution (dialysate) with similar concentration of the body are in and out of the hollow fibers, and carrying out substance exchange by dispersion/convection to remove metabolic wastes in the body and maintain the balance of the electrolyte and acid and alkali; at the same time, the whole process of removing excessive water from the body and reinfusion of the purified blood is called hemodialysis.
The hemodialysis machine is a treatment instrument which is most widely applied in hemodialysis treatment and consists of a dialysate supply monitoring device and an extracorporeal circulation monitoring device. The device comprises a blood pump which is the power for driving the extracorporeal circulation of blood; a dialysate preparation system; preparing dialysate with proper electrolyte concentration on line; the capacity control system ensures that the liquid amount entering and exiting the dialyzer reaches a preset balance target; and various safety monitoring systems including pressure monitoring, air monitoring, and blood leakage monitoring.
An anticoagulant pump is a separate device in a hemodialysis machine, which corresponds to a clinically applied microinjection pump, for continuously injecting heparin or citric acid solution into the patient's blood. Since blood is easily coagulated during extracorporeal circulation in hemodialysis, the use of heparin or citric acid solution can prevent coagulation. Heparin or citric acid solution is used as a clinically common anticoagulant to prevent blood from coagulating in the outer tubing of the dialyzer or the like.
Heparin pumps of hemodialysis machines in the current market are usually finished by manual operation, are complex in operation and have a certain danger, lack a locked rotor protection function, and do not have the functions of quick injection and quick replacement of an installation syringe.
CRRT (i.e., continuous renal replacement therapy) is an english abbreviation for continuous renal replacement therapy. Refers to any one of the techniques of extracorporeal blood purification treatment intended to replace impaired liver function for a continuous 24 hours or more. The method is mainly applied to ICU wards. The method can continuously remove excessive water and toxin in the body during treatment, and regulate the balance of acid, alkali and electrolyte to effectively maintain the stability of the internal environment of the body. Continuous anticoagulation is required during continuous treatment to establish and maintain a good blood circulation path. Whether anticoagulation is sufficient is directly related to filtration of the liquid, clearance of solutes and the life of the filter. The anticoagulant pump plays a very critical role in CRRT treatment. And if citric acid is used for anticoagulation in CRRT treatment, an anticoagulation pump needs to be used for injecting a calcium solution to be matched with citric acid for achieving the anticoagulation of the extracorporeal blood. The existing pipe diameter identification function adopts a photoelectric switch, and only two types and three types of injectors can be identified, so that the anti-coagulation pump function is also provided to adapt to the requirements of injectors with different types and specifications.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention has an object to provide an anticoagulant pump for purifying blood, which is easy to assemble, has high reliability, and can rapidly perform syringe injection and monitoring for stalling.
The technical scheme of the invention is as follows:
the anticoagulation pump for blood purification comprises a frame structure surrounded by a front baffle, a rear baffle, a left baffle and a right baffle, wherein a control circuit board is arranged above the frame structure, a transmission screw is rotatably arranged between the front baffle and the rear baffle in a penetrating way, the transmission screw is driven by a motor through a transmission mechanism, a sliding part is movably arranged on the transmission screw, a transmission rod is arranged on the rear baffle in a penetrating way, one end of the transmission rod is connected with the sliding part, and the other end of the transmission rod is connected with a tail clamp part;
a metal card is fixed on the sliding part, a position sensor is electrically connected to the control circuit board, and a first poking piece on the position sensor is clamped into the metal card and can move back and forth along with the metal card;
the utility model discloses a needle tube seat, including frame construction, needle tube clamp plate, fixing base, control circuit board, needle tube seat, needle tube clamp plate, first return spring, fixed seat, control circuit board, the below of frame construction is provided with a needle tube seat, and the below of this needle tube seat is connected with a needle tube clamp plate, is provided with a movable rod along vertical direction on this needle tube clamp plate, and this movable rod wears to establish on the fixing base, and this fixing base is fixed on left baffle, be provided with a snap ring along vertical direction movability on the fixing base, the electricity is connected with pipe diameter detection sensor on this pipe diameter detection sensor's second plectrum card income in the snap ring and with the upper end of movable rod contacts, still the cover is equipped with first return spring on the movable rod, and this first return spring's one end is supported on the fixing base, and the other end is supported on the needle tube seat.
By adopting the technical scheme, when the injector is used, the rotating tail clamp part drives the sliding part to be closed through the transmission rod, then the needle tube pressing plate is pulled downwards to mount the injector on the needle tube seat, the needle tube tail clamp of the injector is fixed on the tail clamp part, at the moment, the second poking piece on the pipe diameter detection sensor moves up and down along with the moving rod, and the pipe diameter detection sensor feeds corresponding signals back to the control circuit board to detect the pipe diameter; the motor is started to drive the drive screw to rotate, so that the sliding part is driven to move, the tail clamp part is driven to move, the pushing injection action is completed, meanwhile, when the sliding part moves, the metal card on the sliding part can drive the first poking piece on the position sensor to move, the position sensor can feed corresponding signals back to the control circuit board, and the position of the tail end of the injector can be monitored in real time, and whether the injector is blocked or not can be accurately judged.
Preferably, the sliding component comprises a sliding seat arranged in the frame structure, a left opening and closing nut and a right opening and closing nut are arranged in the sliding seat, one ends of the left opening and closing nut and the right opening and closing nut are hinged, the transmission screw penetrates through the sliding seat and the position where the left opening and closing nut and the right opening and closing nut are buckled, the end part of the transmission rod stretches into the position where the left opening and closing nut and the right opening and closing nut are buckled, two sides of the left opening and closing nut and the right opening and closing nut are symmetrically provided with a second return spring respectively, one ends of the two second return springs are respectively abutted with the left opening and closing nut and the right opening and closing nut on corresponding sides, and the other ends of the second return springs are respectively abutted with the corresponding sides of the sliding seat.
Preferably, the end of the transmission rod is connected with a cam, the cam stretches into the position where the left opening and closing nut and the right opening and closing nut are buckled, when the left opening and closing nut and the right opening and closing nut are buckled, the planes at two ends of the cam are respectively contacted with the buckling surfaces of the left opening and closing nut and the right opening and closing nut, and when the left opening and closing nut and the right opening and closing nut are opened, the two arc surfaces of the cam are respectively contacted with the left opening and closing nut and the right opening and closing nut.
Preferably, two parallel guide rods are further arranged on the sliding seat in a penetrating manner along the horizontal direction.
Preferably, a U-shaped groove is provided on the sliding seat, and a rotary sliding sleeve is installed in the U-shaped groove, wherein one of the guide rods passes through the rotary sliding sleeve.
The device has the advantages that the parallelism requirement on the guide rod during assembly is reduced, the linearity requirement on the driving screw is reduced, the vibration noise can be obviously reduced, the requirement on the machining precision is reduced, and the manufacturing cost is obviously reduced.
Preferably, the tail clamp component comprises a push plate front cover and a push plate rear cover which are mutually buckled, the end part of the transmission rod stretches into a space formed by buckling the push plate front cover and the push plate rear cover, a knob is connected to the end part of the transmission rod and is installed on the push plate rear cover, a tooth-shaped rotating block is sleeved on the transmission rod close to the end part of the transmission rod and meshed with a first gear, the first gear is meshed with a second gear, a first needle tube tail clamp and a second needle tube tail clamp are respectively connected to rotating shafts of the first gear and the second gear, a third return spring is arranged below the tooth-shaped rotating block, one end of the third return spring is connected with the tooth-shaped rotating block, and the other end of the third return spring is connected with the push plate rear cover.
Preferably, the axes of the first gear and the second gear are parallel to each other, and the axes of the first gear and the second gear are on the same horizontal plane.
Preferably, the first needle tube tail clip and the second needle tube tail clip are arranged on the push plate front cover in a penetrating way, and the first needle tube tail clip and the second needle tube tail clip are positioned outside a space formed by the push plate front cover and the push plate rear cover.
Preferably, a positioning block is further installed in the push plate front cover, the positioning block is sleeved on the transmission rod, and the positioning block is tightly attached to one end face of the tooth-shaped rotary block.
Preferably, the transmission mechanism comprises a small synchronizing wheel arranged on an output shaft of the motor and a large synchronizing wheel arranged on the transmission screw, and the small synchronizing wheel and the large synchronizing wheel are connected through a synchronous belt.
The beneficial effects are that: when the injector is used, the sliding part is driven to be closed by the rotating tail clamp part through the transmission rod, the needle tube pressing plate is pulled downwards to install the injector on the needle tube seat, the needle tube tail clamp of the injector is fixed on the tail clamp part, at the moment, the second poking piece on the pipe diameter detection sensor moves up and down along with the moving rod, and the pipe diameter detection sensor feeds corresponding signals back to the control circuit board to detect the pipe diameter, so that the injector can be quickly moved to any position and installed; the motor is started to drive the driving screw to rotate so as to drive the sliding part to move back and forth, and then drive the tail clamp part to move back and forth, so that the pushing action is completed, meanwhile, when the sliding part moves, the metal card on the sliding part can drive the first poking piece on the position sensor to move, and the position sensor can feed corresponding signals back to the control circuit board, so that the tail end position of the injector can be monitored in real time, and whether the injector is blocked or not can be accurately judged. The invention has the advantages of simple structure, convenient use, low manufacturing cost and higher reliability and safety.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a rear view of FIG. 1;
FIG. 3 is an enlarged view of the portion I in FIG. 1;
FIG. 4 is a cross-sectional view A-A of FIG. 1;
FIG. 5 is an enlarged view at II in FIG. 1;
fig. 6 is a right side view of fig. 5.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
the anticoagulation pump for blood purification as shown in fig. 1-6 comprises a frame structure formed by enclosing a front baffle 21, a rear baffle 22, a left baffle 23 and a right baffle 24 which are made of metal materials, wherein the height of the front baffle 21 is higher than that of the other three baffles, a control circuit board 9 is arranged above the frame structure, the control circuit board 9 is arranged on the left baffle 23, a transmission screw 1 is rotatably penetrated between the front baffle 21 and the rear baffle 22, the transmission screw 1 is supported on the front baffle 21 and the rear baffle 22 by two pairs of bearings, the transmission screw 1 is driven by a motor 3 through a transmission mechanism 31, the motor 3 is arranged on the front baffle 21, the transmission mechanism 31 is positioned outside the frame structure formed by enclosing the front baffle 21, the rear baffle 22, the left baffle 23 and the right baffle 24, the transmission mechanism 31 comprises a small synchronous wheel 310 arranged on an output shaft of the motor 3 and a large synchronous wheel 311 arranged on the transmission screw 1, and the small synchronous wheel 310 and the large synchronous wheel 311 are connected through a synchronous belt 312.
As can be seen from fig. 3 and 4, the driving screw 1 is movably provided with a sliding component, the rear baffle 22 is provided with a driving rod 5 in a penetrating way, one end of the driving rod 5 is connected with the sliding component, and the other end is connected with the tail clip component; the sliding component comprises a sliding seat 41 arranged in the frame structure, a left opening and closing nut 42 and a right opening and closing nut 43 with one ends hinged are arranged in the sliding seat 41, the transmission screw 1 penetrates through the sliding seat 41 and the position where the left opening and closing nut 42 is buckled with the right opening and closing nut 43, the end part of the transmission rod 5 stretches into the position where the left opening and closing nut 42 is buckled with the right opening and closing nut 43, the end part of the transmission rod 5 is connected with a cam 51, the cam 51 stretches into the position where the left opening and closing nut 42 is buckled with the right opening and closing nut 43, when the left opening and closing nut 42 is buckled with the right opening and closing nut 43, the planes at two ends of the cam 51 are respectively contacted with buckling surfaces of the left opening and closing nut 42 and the right opening and closing nut 43, and when the left opening and closing nut 43 are opened, two arc surfaces of the cam 51 are respectively contacted with the left opening and closing nut 42 and the right opening and closing nut 43.
Two sides of the left opening and closing nut 42 and the right opening and closing nut 43 are symmetrically provided with a second return spring 44, one end of each second return spring 44 is respectively abutted with the left opening and closing nut 42 and the right opening and closing nut 43 on the corresponding sides, and the other end is respectively abutted with the corresponding sides of the sliding seat 41.
Two parallel guide rods 11 are further arranged on the sliding seat 41 in a penetrating manner in the horizontal direction, a U-shaped groove is formed in the sliding seat 41, a rotary sliding sleeve 45 is arranged in the U-shaped groove, and one guide rod 11 penetrates through the rotary sliding sleeve 45.
A metal card 40 is fixed on the sliding component, a position sensor 10 is electrically connected to the control circuit board 9, the position sensor 10 is arranged along the horizontal direction, and a first plectrum 100 on the position sensor 10 is clamped into the metal card 40 and can move back and forth along with the metal card 40.
As can be seen from fig. 1 and fig. 2 in combination with fig. 4, a needle tube seat 7 is disposed below the frame structure, a needle tube pressing plate 12 is connected below the needle tube seat 7, a moving rod 13 is disposed on the needle tube pressing plate 12 along the vertical direction, the moving rod 13 is arranged on a fixing seat 14 in a penetrating manner, the fixing seat 14 is fixed on a left baffle 23 along the vertical direction, a clamping ring 140 is movably disposed on the fixing seat 14 along the vertical direction, a pipe diameter detection sensor 15 is electrically connected on the control circuit board 9 along the vertical direction, a second pulling piece 150 on the pipe diameter detection sensor 15 is clamped into the clamping ring 140 and is contacted with the upper end of the moving rod 13, a first return spring 131 is further sleeved on the moving rod 13, one end of the first return spring 131 abuts against a clamping block 141 on the fixing seat 14, and the other end abuts against the seat 7.
As can be seen from fig. 5 and 6, the tail clip component includes a push plate front cover 61 and a push plate rear cover 62 that are fastened to each other, the end of the transmission rod 5 extends into a space formed by fastening the push plate front cover 61 and the push plate rear cover 62, a knob 63 is connected to the end of the transmission rod 5, the knob 63 is mounted on the push plate rear cover 62, a tooth-shaped rotating block 64 is further sleeved on the transmission rod 5 near the end thereof, the tooth-shaped rotating block 64 is meshed with a first gear 65, the first gear 65 is meshed with a second gear 66, the axes of the first gear 65 and the second gear 66 are parallel to each other, and the axes of the first gear 65 and the second gear 66 are on the same horizontal plane. The rotating shafts of the first gear 65 and the second gear 66 are respectively connected with a first needle tube tail clamp 67 and a second needle tube tail clamp 68, the first needle tube tail clamp 67 and the second needle tube tail clamp 68 are arranged on the push plate front cover 61 in a penetrating manner, and the first needle tube tail clamp 67 and the second needle tube tail clamp 68 are located outside a space formed by the push plate front cover 61 and the push plate rear cover 62. A positioning block 610 is further installed in the push plate front cover 61, the positioning block 610 is sleeved on the transmission rod 5, and the positioning block 610 is tightly attached to one end face of the tooth-shaped rotary block 64. A third return spring 69 is further arranged below the tooth-shaped rotary block 64, one end of the third return spring 69 is connected with the tooth-shaped rotary block 64, and the other end of the third return spring 69 is connected with the push plate rear cover 62. The tooth-shaped rotary block 64, the first gear 65, the second gear 66, the positioning block 610 and the third return spring 69 are located in a space formed by the front push plate cover 61 and the rear push plate cover 62 after being buckled.
When the injector is used, the knob 63 of the tail clamp part is rotated to drive the transmission rod 5 to rotate, so that the lug 51 at the end part of the transmission rod 5 is driven to rotate to close the left opening nut 42 and the right opening nut 43 of the sliding part, the tooth-shaped rotary block 64 is driven to rotate to drive the first gear 65 to rotate, the first gear 65 and the second gear 66 are oppositely rotated to open the first needle tube tail clamp 67 and the second needle tube tail clamp 68, the needle tube pressing plate 12 is pulled downwards to install the injector 8 on the needle tube seat 7, the tail part of the needle tube 81 of the injector 8 is fixed between the opening spaces of the first needle tube tail clamp 67 and the second needle tube tail clamp 68, the knob 63 is loosened, when the needle tube pressing plate 12 is pulled downwards, the moving rod 13 drives the clamping ring 140 and the second shifting piece 150 on the pipe diameter detection sensor 15 to move downwards until the injector 8 is installed, and at the moment, the pipe diameter detection sensor 15 feeds corresponding signals detected to the controller circuit board 9 to realize the identification of the pipe diameter of the injector; then at this moment, the motor 3 is started to drive the transmission rod screw 1 to rotate so as to drive the sliding part to move forward and further drive the tail clamp part to move forward, so that the effect of quick injection is achieved, meanwhile, the sliding part can drive the metal card 40 on the sliding part to move when moving, and further drive the first poking piece 100 on the position sensor 10 to move until injection is completed, and the position sensor 10 can feed back detected corresponding signals to the controller circuit board 9 so as to achieve the effects of monitoring of injection blockage and quick injection.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (8)
1. An anticoagulant pump for purifying blood, characterized in that:
the device comprises a frame structure surrounded by a front baffle (21), a rear baffle (22), a left baffle (23) and a right baffle (24), wherein a control circuit board (9) is arranged above the frame structure, a transmission screw (1) is rotatably arranged between the front baffle (21) and the rear baffle (22) in a penetrating manner, the transmission screw (1) is driven by a motor (3) through a transmission mechanism (31), the motor (3) is arranged on the front baffle (21), a sliding part is movably arranged on the transmission screw (1), a transmission rod (5) is arranged on the rear baffle (22) in a penetrating manner, one end of the transmission rod (5) is connected with the sliding part, and the other end of the transmission rod is connected with a tail clamp part;
a metal card (40) is fixed on the sliding part, a position sensor (10) is electrically connected to the control circuit board (9), and a first poking piece (100) on the position sensor (10) is clamped into the metal card (40) and can move back and forth along with the metal card (40);
a needle tube seat (7) is arranged below the frame structure, a needle tube pressing plate (12) is connected below the needle tube seat (7), a moving rod (13) is arranged on the needle tube pressing plate (12) along the vertical direction, the moving rod (13) is arranged on a fixed seat (14) in a penetrating mode, the fixed seat (14) is fixed on a left baffle plate (23), a clamping ring (140) is movably arranged on the fixed seat (14) along the vertical direction, a pipe diameter detection sensor (15) is electrically connected on the control circuit board (9), a second poking piece (150) on the pipe diameter detection sensor (15) is clamped into the clamping ring (140) and is in contact with the upper end of the moving rod (13), a first return spring (131) is sleeved on the moving rod (13), one end of the first return spring (131) is abutted to the fixed seat (14), and the other end of the first return spring is abutted to the needle tube seat (7);
the sliding component comprises a sliding seat (41) arranged in the frame structure, a left opening and closing nut (42) and a right opening and closing nut (43) with one ends hinged are arranged in the sliding seat (41), the transmission screw (1) passes through the positions where the sliding seat (41) and the left opening and closing nut (42) are buckled with the right opening and closing nut (43), the end part of the transmission rod (5) stretches into the positions where the left opening and closing nut (42) is buckled with the right opening and closing nut (43), two sides of the left opening and closing nut (42) and the right opening and closing nut (43) are symmetrically provided with a second return spring (44), one ends of the two second return springs (44) are respectively abutted with the left opening and closing nut (42) and the right opening and closing nut (43) on corresponding sides, and the other ends of the two second return springs are respectively abutted with corresponding sides of the sliding seat (41);
the end connection of transfer line (5) has a cam (51), and this cam (51) stretches into left side open and shut nut (42) and right side open and shut nut (43) lock's position, when left side open and shut nut (42) and right side open and shut nut (43) lock, the plane at cam (51) both ends respectively with left side open and shut nut (42) and right side open and shut nut (43) lock face contact, when left side open and shut nut (42) and right side open and shut nut (43) open, two arcwall faces of cam (51) respectively with left side open and shut nut (42) and right side open and shut nut (43) contact.
2. An anticoagulation pump for blood purification according to claim 1, wherein:
two parallel guide rods (11) are also arranged on the sliding seat (41) in a penetrating manner along the horizontal direction.
3. An anticoagulation pump for blood purification according to claim 2, characterized in that:
a U-shaped groove is arranged on the sliding seat (41), a rotary sliding sleeve (45) is arranged in the U-shaped groove, and one guide rod (11) penetrates through the rotary sliding sleeve (45).
4. An anticoagulation pump for blood purification according to any one of claims 1-3, characterized in that:
the tail clamp part comprises a push plate front cover (61) and a push plate rear cover (62) which are mutually buckled and connected, the end part of a transmission rod (5) stretches into a space formed by buckling the push plate front cover (61) and the push plate rear cover (62), a knob (63) is connected to the end part of the transmission rod (5), the knob (63) is installed on the push plate rear cover (62), a tooth-shaped rotating block (64) is sleeved at the position, close to the end part, of the transmission rod (5), the tooth-shaped rotating block (64) is meshed with a first gear (65), the first gear (65) is meshed with a second gear (66), a first tail clamp (67) and a second needle tube tail clamp (68) are respectively connected to the rotating shafts of the first gear (65) and the second gear (66), a third return spring (69) is further arranged below the tooth-shaped rotating block (64), one end of the third return spring (69) is connected with the tooth-shaped rotating block (64), and the other end of the third return spring is connected with the tooth-shaped rotating block (62).
5. An anticoagulation pump for blood purification according to claim 4, wherein:
the axes of the first gear (65) and the second gear (66) are parallel to each other, and the axes of the first gear (65) and the second gear (66) are on the same horizontal plane.
6. An anticoagulation pump for blood purification according to claim 5, wherein:
the first needle tube tail clamp (67) and the second needle tube tail clamp (68) are arranged on the push plate front cover (61) in a penetrating mode, and the first needle tube tail clamp (67) and the second needle tube tail clamp (68) are located outside a space formed by the push plate front cover (61) and the push plate rear cover (62).
7. An anticoagulation pump for blood purification according to claim 5 or 6, characterized in that:
a positioning block (610) is further installed in the push plate front cover (61), the positioning block (610) is sleeved on the transmission rod (5), and the positioning block (610) is tightly attached to one end face of the tooth-shaped rotary block (64).
8. An anticoagulation pump for blood purification according to any one of claims 1-3, characterized in that:
the transmission mechanism (31) comprises a small synchronous wheel (310) arranged on an output shaft of the motor (3) and a large synchronous wheel (311) arranged on the transmission screw (1), and the small synchronous wheel (310) and the large synchronous wheel (311) are connected through a synchronous belt (312).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711216819.1A CN107982588B (en) | 2017-11-28 | 2017-11-28 | Anticoagulation pump for blood purification |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711216819.1A CN107982588B (en) | 2017-11-28 | 2017-11-28 | Anticoagulation pump for blood purification |
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| CN107982588A CN107982588A (en) | 2018-05-04 |
| CN107982588B true CN107982588B (en) | 2024-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711216819.1A Active CN107982588B (en) | 2017-11-28 | 2017-11-28 | Anticoagulation pump for blood purification |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114668911B (en) * | 2022-03-15 | 2025-02-18 | 甘肃省第三人民医院(甘肃省干部医疗保健院) | Anticoagulation pump device for blood purification |
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| CN202113388U (en) * | 2011-06-15 | 2012-01-18 | 广州市暨华医疗器械有限公司 | Heparin pump with liquid emptying detection structure |
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| ITMO20050195A1 (en) * | 2005-07-29 | 2007-01-30 | Gambro Lundia Ab | MACHINE FOR EXTRACORPROUS TREATMENT OF BLOOD |
| DE202015105647U1 (en) * | 2014-10-24 | 2016-01-29 | Johnson Electric S.A. | drive mechanism |
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|---|---|---|---|---|
| CN202113388U (en) * | 2011-06-15 | 2012-01-18 | 广州市暨华医疗器械有限公司 | Heparin pump with liquid emptying detection structure |
| CN202146466U (en) * | 2011-06-15 | 2012-02-22 | 广州市暨华医疗器械有限公司 | Heparin pump with pipe diameter detecting structure |
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| CN105328703A (en) * | 2015-10-13 | 2016-02-17 | 深圳市桑谷医疗机器人有限公司 | Medicine extracting and injecting mechanical arm |
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| CN107982588A (en) | 2018-05-04 |
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