CN112983775A - Automatic detection method for injection allowance of injector, injection pump and radio frequency ablation system - Google Patents

Automatic detection method for injection allowance of injector, injection pump and radio frequency ablation system Download PDF

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Publication number
CN112983775A
CN112983775A CN202110179037.5A CN202110179037A CN112983775A CN 112983775 A CN112983775 A CN 112983775A CN 202110179037 A CN202110179037 A CN 202110179037A CN 112983775 A CN112983775 A CN 112983775A
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China
Prior art keywords
injector
injection
optical coupler
light barrier
allowance
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CN202110179037.5A
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Chinese (zh)
Inventor
江丽芳
隋海龙
李宇航
徐宏
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Hangzhou Kunbo Biotechnology Co Ltd
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Hangzhou Kunbo Biotechnology Co Ltd
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Priority to CN202110179037.5A priority Critical patent/CN112983775A/en
Publication of CN112983775A publication Critical patent/CN112983775A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B51/00—Testing machines, pumps, or pumping installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
    • A61B2018/00011—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids
    • A61B2018/00029—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids open
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/00577—Ablation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00642—Sensing and controlling the application of energy with feedback, i.e. closed loop control
    • A61B2018/00648—Sensing and controlling the application of energy with feedback, i.e. closed loop control using more than one sensed parameter
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00696—Controlled or regulated parameters
    • A61B2018/00744—Fluid flow
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00898—Alarms or notifications created in response to an abnormal condition
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
    • A61B2560/02—Operational features
    • A61B2560/0266—Operational features for monitoring or limiting apparatus function

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Plasma & Fusion (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Otolaryngology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Computer Hardware Design (AREA)
  • Cardiology (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

The invention provides an automatic detection method of injection allowance of an injector, which is applied to an injection pump, wherein the injection pump comprises the injector and an injector driving device, the injector driving device comprises a motor, a push rod and a detection device, the motor drives a push handle to move in the running process, and the push rod drives the injector to perform extraction action; judging whether the light barrier reaches the position of the first optocoupler or not; if the light barrier reaches the position of the first optocoupler, controlling a push rod of the injector to stop extracting; starting the injection action of a push rod of the injector; calculating the movement distance of the light barrier in a straight path; and automatically calculating the injection allowance of the injector according to the movement distance, the total length of the linear path and the maximum capacity of the injector. According to the automatic detection method for the injection allowance of the injector, the automatic detection of the injection allowance can be realized, and the working efficiency is improved. The invention also provides an automatic detection system for the injection allowance of the injector, a computer readable storage medium, an injection pump and a radio frequency ablation system.

Description

Automatic detection method for injection allowance of injector, injection pump and radio frequency ablation system
Technical Field
The invention relates to the field of medical treatment, in particular to an automatic detection method and system for injection allowance of an injector, a computer-readable storage medium, an injection pump and a radio frequency ablation system.
Background
In recent years, radio frequency ablation technology is widely applied to treatment of abnormal tissues of human bodies, and the principle is that high-frequency alternating current is applied to enable ions in the abnormal tissues (such as tumors) to generate high-speed oscillation and mutual friction, and radio frequency energy is converted into heat energy, so that the tumors generate coagulation necrosis.
The device for radiofrequency ablation therapy comprises an ablation instrument and an ablation catheter connected with the ablation instrument. The ablation catheter is inserted into the body to ablate abnormal tissue in the body. Can produce a large amount of heats at the ablation in-process, make the dry charring back "scab" of tissue around the ablation catheter function position to lead to melting and stop, melt thoroughly, consequently, the industry is melting the in-process, injects heat transfer medium to the ablation catheter through the syringe, and heat transfer medium flows out via melting the catheter, with cooling ablation position, avoids scabbing, ensures to the abundant ablation of abnormal tissue.
However, the injector in the prior art cannot realize automatic injection of a heat exchange medium, is slow in injection speed and low in efficiency, and cannot automatically measure and calculate the injection amount.
Disclosure of Invention
In view of the above, the present invention provides a method and a system for automatically detecting an injection remaining amount of an injector, a computer-readable storage medium, an injection pump, and a radio frequency ablation system. The automatic detection of the injection allowance can be realized, and the working efficiency is improved.
The invention provides an injection allowance automatic detection method of an injector, which is applied to an injection pump, wherein the injection pump comprises the injector and an injector driving device, the injector driving device comprises a motor, a push handle, a sliding part, a light barrier and a first optical coupler, the push handle is detachably connected with a push rod of the injector, the motor drives the push handle to move in the operation process, the push handle drives the push rod of the injector to extract or inject while moving, the light barrier is fixed on the sliding part and synchronously keeps the reciprocating motion of a linear path along with the push handle, and the first optical coupler is arranged at the starting point of the linear path, wherein the injection allowance automatic detection method comprises the following steps:
the motor drives the push handle to move in the running process and drives the push rod of the injector to perform extraction action;
judging whether the light barrier reaches the position of the first optocoupler or not;
if the light barrier reaches the position of the first optocoupler, controlling a push rod of the injector to stop extracting;
starting the injection action of a push rod of the injector;
calculating the movement distance of the light barrier in the straight path;
and automatically calculating the injection allowance of the injector according to the movement distance, the total length of the linear path and the maximum capacity of the injector. Through the setting of linear actuating mechanism drive syringe and injection allowance detection structure, realize automatic the pouring and automated inspection injection allowance, improve the injection effect. The problems that in the prior art, manual injection efficiency is low and injection amount cannot be automatically measured and calculated are solved.
In a possible solution, the injector driving device includes a second optical coupler, the second optical coupler is disposed on the straight path and close to the first optical coupler, and a position of the second optical coupler corresponds to a 50ml position of the injector, wherein the method for automatically detecting the injection allowance further includes:
judging whether the light barrier reaches the position of the second optocoupler or not;
and if the light barrier reaches the position of the second optocoupler, automatically determining that the injection allowance of the injector is 50 ml.
In a possible solution, the injector driving device includes a third optical coupler, the third optical coupler is disposed on the linear path and close to the second optical coupler, and a position of the third optical coupler corresponds to a 10ml position of the injector, wherein the method for automatically detecting the injection allowance further includes:
judging whether the light barrier reaches the position of the third optocoupler or not;
and if the light barrier reaches the position of the third optocoupler, automatically determining that the injection allowance of the injector is 10 ml.
In a possible solution, the injector driving device includes a fourth optical coupler, the fourth optical coupler is disposed at an end point on the linear path and close to the third optical coupler, and a position of the fourth optical coupler corresponds to a 0ml position of the injector, wherein the method for automatically detecting the injection allowance further includes:
judging whether the light barrier reaches the position of the fourth optocoupler or not;
and if the light barrier reaches the position of the fourth optocoupler, automatically determining that the injection allowance of the injector is 0ml, and performing shutdown reset detection.
The invention also provides an automatic injection allowance detection system of an injector, which is applied to an injection pump, wherein the injection pump comprises the injector and an injector driving device, the injector driving device comprises a motor, a push handle, a sliding part, a light barrier and a first optical coupler, the push handle is detachably connected with a push rod of the injector, the motor drives the push handle to move in the operation process, the push handle drives the push rod of the injector to draw or inject while moving, the light barrier is fixed on the sliding part and synchronously keeps the reciprocating motion of a linear path along with the push handle, and the first optical coupler is arranged at the starting point of the linear path, wherein the automatic injection allowance detection system comprises:
the extraction module is used for driving the push handle to move in the running process of the motor and driving a push rod of the injector to perform extraction action;
the judging module is used for judging whether the light barrier reaches the position of the first optocoupler or not;
the control module is used for controlling a push rod of the injector to stop the extraction action and starting the injection action of the push rod of the injector if the light barrier reaches the position of the first optocoupler;
and the calculation module is used for calculating the movement distance of the light barrier in the linear path and automatically calculating the injection allowance of the injector according to the movement distance, the total length of the linear path and the maximum capacity of the injector. Through the setting of linear actuating mechanism drive syringe and injection allowance detection structure, realize automatic the pouring and automated inspection injection allowance, improve the injection effect. The problems that in the prior art, manual injection efficiency is low and injection amount cannot be automatically measured and calculated are solved.
In a feasible scheme, the injector driving device includes a second optical coupler, the second optical coupler is disposed on the linear path and close to the first optical coupler, and a position of the second optical coupler corresponds to a position of 50ml of the injector, wherein the determining module is further configured to determine whether the light barrier reaches the position of the second optical coupler; the calculation module is further used for automatically determining that the injection allowance of the injector is 50ml if the light barrier reaches the position of the second optical coupler.
In a feasible scheme, the injector driving device includes a third optical coupler, the third optical coupler is disposed on the linear path and close to the second optical coupler, and a position of the third optical coupler corresponds to a position of 10ml of the injector, wherein the determining module is further configured to determine whether the light barrier reaches the position of the third optical coupler; the calculation module is further used for automatically determining that the injection allowance of the injector is 10ml if the light barrier reaches the position of the third optocoupler.
In a feasible scheme, the injector driving device includes a fourth optical coupler, the fourth optical coupler is disposed at an end point on the linear path and close to the third optical coupler, and a position of the fourth optical coupler corresponds to a 0ml position of the injector, wherein the determining module is further configured to determine whether the light barrier reaches the position of the fourth optical coupler; and the calculation module is also used for automatically determining that the injection allowance of the injector is 0ml and carrying out shutdown reset detection if the light barrier reaches the position of the fourth optocoupler.
The third aspect of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium has a computer program stored thereon, and the computer program, when executed by a processor, implements the steps of the automatic detection method for injection remaining amount of the injector described above.
The fourth aspect of the present invention also provides a syringe pump, wherein the syringe pump includes a memory and a processor, the memory stores computer processing instructions, and the processor executes the above-mentioned syringe remaining injection amount automatic detection method by calling the computer processing instructions.
The invention also provides a radio frequency ablation system, which comprises an ablation catheter, an ablation instrument connected with the ablation catheter and an injection pump, wherein the injection pump is the injection pump.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of a syringe pump according to an embodiment of the present invention.
Fig. 2 is a left side view of the syringe pump of fig. 1.
Fig. 3 is a top view of the syringe pump of fig. 1.
Fig. 4 is a partial cross-sectional view of the syringe pump of fig. 3 taken along line a-a.
Fig. 5 is an enlarged view of a portion B of the syringe pump of fig. 4.
Fig. 6 is a schematic view showing the internal structure of the syringe pump shown in fig. 1, in which the rear cover of the housing is omitted to show the internal structure thereof.
Fig. 7 is a partially enlarged view of a portion of the syringe pump C shown in fig. 6.
Fig. 8 is a flowchart illustrating an automatic detection method for injection remaining of an injector according to an embodiment of the present invention.
Fig. 9 is a schematic block diagram of an automatic injection remaining amount detection system of an injector according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the indicated orientations and positional relationships based on the drawings for convenience in describing and simplifying the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication connection; either directly or indirectly through intervening media, either internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
The present invention will be described in detail with reference to the following examples.
Please refer to fig. 1-7. The syringe pump 100 according to an embodiment of the present invention includes a syringe 10 and a driving device 20 for driving the syringe 10.
The drive device 20 includes a housing 22, a linear drive mechanism 24 mounted within the housing 22, and a push handle 26 drivable by the linear drive mechanism 24. The push handle 26 is located outside the housing 22, and is fixedly connected to the linear driving mechanism 24 through a guide shaft 27, and the guide shaft 27 penetrates through a side wall of the housing 22. The injector 10 is mounted on a housing 22 of the drive device 20. The injector 10 includes a ram 12, the ram 12 being movable back and forth on an inner sidewall 14 of the injector 10. The end of the push rod 12 is detachably connected to the push handle 26. The linear actuator 24 is operative to drive the push handle 26 to move, and the push handle 26 drives the push rod 12 of the syringe 10 to move, so as to draw fluid into the syringe 10 or push fluid out of the syringe 10, thereby achieving automatic priming.
In this embodiment, the housing 22 of the driving device 20 is formed by connecting a front case 222 and a rear cover 224. The front housing 222 and the rear cover 224 enclose a receiving space, and the linear driving mechanism 24 is disposed in the receiving space. A mounting chamber is formed at an outer side of the front case 222, and the syringe 10 is detachably mounted in the mounting chamber. The front shell 222 is further provided with a receiving groove at one side of the mounting cavity, and the push handle 26 can move into the receiving groove, so that the syringe pump 100 designed in this way is more compact in structure and convenient to store and transport.
Specifically, the linear drive mechanism 24 includes a motor 242, a lead screw 244 driven by the motor 242, and a slider 246 threadedly engaged with the lead screw 244. A slide rail 247 is fixed relative to the housing 22, and the sliding member 246 is disposed on the slide rail 247. One side of the slide member 246 is fixedly connected to the guide shaft 27. Therefore, when the motor 242 is operated, the lead screw 244 is driven to rotate, the lead screw 244 further drives the sliding member 246 to perform a linear motion along the sliding rail 247, and when the sliding member 246 moves, the guide shaft 27 is driven to perform a linear motion, and further the push handle 26 is driven to move. In the present embodiment, the screw 244 is connected to the rotation shaft of the motor 242 through a speed reduction mechanism. Specifically, the reduction mechanism includes a drive gear 248 and a driven gear 249 that mesh with each other. The driving gear 248 is fixedly connected with the rotating shaft of the motor 242, and the driven gear 249 is fixedly connected with the screw rod 244. The number of teeth of the driven gear 249 is greater than that of the drive gear 248.
A first fixing plate 226 and a second fixing plate 227 are spaced apart from each other in the housing 22. The motor 242 is located between the first fixing plate 226 and the second fixing plate 227, one end of the motor 242 is fixed to the inner side of the first fixing plate 226 facing the second fixing plate 227, and the speed reducing mechanism is located on the outer side of the first fixing plate 226 facing away from the second fixing plate 227. The rotating shaft of the motor 242 passes through the first fixing plate 226 and is connected with the driving gear 248 of the speed reducing mechanism. The two ends of the screw rod 244 are rotatably supported in the first fixing plate 226 and the second fixing plate 227, respectively. A first end of the screw rod 244 passes through the first fixing plate 226 and is fixedly connected with the driven gear 249.
The slider 246 includes a threaded portion 241, a sliding portion 243, and a connecting portion 245 which are integrally connected. The threaded portion 241 has a threaded hole at the center, and the internal thread of the threaded hole is engaged with the external thread of the screw rod 244. The connecting portion 245 extends from one side of the threaded portion 241, and the connecting portion 245 is used for being fixedly connected with the guide shaft 27, so as to drive the guide shaft 27 to move. The sliding portion 243 extends from one end of the connecting portion 245. The sliding part 243 has a sliding slot for cooperating with the sliding rail 247.
A third fixing plate 228 is disposed in the housing, and the third fixing plate 228 is spaced apart from the second fixing plate 227. A linear bearing 229 is supported by the second fixing plate 227 and the third fixing plate 228, and the guide shaft 27 passes through the linear bearing 229 to be rotatably supported therein.
The syringe pump 100 of the present invention further includes a remaining injection amount detecting mechanism 30. The injection allowance detection mechanism 30 includes a light-blocking plate 32 fixed with respect to the slider 246, and one or more light couplers 34 fixed with respect to the housing 22. The light barrier 32 is fixed to the connecting portion 245 of the slider 246. When motor 242 is operated, light barrier 32 moves linearly with slide 246. In this embodiment, the optical coupler 34 is disposed on a stroke path of the light barrier 32.
Specifically, the light barrier 32 has a substantially inverted zigzag shape, and includes a vertically arranged connecting plate 322, and a bottom plate 324 and a top plate 326 respectively connected to both ends of the connecting plate 322, and the bottom plate 324 and the top plate 326 are respectively located at both sides of the connecting plate 322. The bottom plate 324 is fixedly connected to the connecting portion 245 of the slider 246. The top plate 326 is positioned above the bottom plate 324, and one side of the top plate 326 is connected to the connection plate 322 and the other side extends outward.
The optical coupler 34 includes an optical transmitter and an optical receiver spaced apart to form a slot. When the light barrier 32 moves along with the sliding member 246, the top plate 326 of the light barrier 32 passes through the notch of the optical coupler 34 and blocks the light emitted from the light emitter, so that the position of the light barrier 32 is detected by the optical coupler 34, and the position of the push handle 26 and the push rod 12 of the syringe is determined by the position of the light barrier 32, and the liquid remaining amount of the syringe is obtained.
In the present embodiment, the injection allowance detection mechanism 30 includes four photo-couplers 34, and the four photo-couplers 34 are arranged in a straight line on a stroke path of the light-blocking plate 32. Referring to fig. 6, the four optical couplers are distributed in sequence from 34 left to right. Specifically, the first optocoupler 34 on the right is used for power-off reset detection, and the light blocking sheet 32 is located at the position during power-off; the second optical coupler 34 on the right side is the position of 10ml of the injector, and when the light blocking sheet 32 is in the position during injection, a software algorithm is started to calculate when the light blocking sheet is injected into 10 ml; the first optocoupler 34 on the left side is at the position with the maximum extraction amount, and extraction is stopped at the position during extraction, so that extraction action cannot be continuously performed, and injection is only performed; the second opto-coupler 34 on the left is the injector 50ml position, providing a position reference for the software.
The syringe pump 100 of the present invention further comprises a pressure detecting mechanism 40, wherein the pressure detecting mechanism 40 is disposed on the push handle 26 and is used for detecting the amount of the pushing force applied to the end of the push rod 12 by the push handle 26, that is, the amount of the torque output by the motor 242. In the present embodiment, the pressure detection mechanism 40 is provided inside the push handle 26.
Specifically, referring to fig. 5, the push handle 26 includes a body 262 and a cover 264 that are connected to each other. One side of the body 262 is used for accommodating the end of the push rod 12, and the other side of the body 262 is fixedly connected with the cover 264. The main body 262 is provided with a through containing cavity, and the pressure detecting mechanism 40 is disposed in the containing cavity. The pressure detecting mechanism 40 includes a pressure sensor 42, a contact amplifier 44, and a return spring 46. The pressure sensor 42 is disposed in the housing chamber of the body 262, and one side thereof is supported by the inner wall of the cover 264. A contact amplifier 44 is disposed within the receiving cavity between the pressure sensor 42 and the end of the pushrod 12. The contact enlargement 44 includes opposing first and second ends. Wherein the first end is used for abutting with the pressure sensor 42, the second end is used for abutting with the end part of the push rod 12, and the area of the second end is larger than that of the first end, thereby increasing the contact area with the end part of the push rod 12.
The return spring 46 is disposed around the contact amplifying member 44, and has one end abutting a step surface on the periphery of the contact amplifying member 44 and the other end abutting a surface of the body 262, and the return spring 46 is compressed when the plunger 12 of the syringe 10 is mounted. When the push handle 26 is moved in the injection direction, the cap 264 of the push handle 26 pushes the end of the push rod 12 by contacting the enlarged part 44, thereby moving the push rod 12 and discharging the liquid in the syringe 10. The pressure sensor 42, which is located between the inner wall of the cover 264 and the first end of the contact amplifying member 44, is pressed, thereby detecting the magnitude of the pushing force of the push lever 26. When the plunger 12 of the injector 10 is removed, the return spring 46 pushes against the contact amplifier 44, relieving the pressure on the pressure sensor 42.
Fig. 8 is a schematic flow chart illustrating an automatic injection remaining amount detection method of an injector according to an embodiment of the present invention.
In this embodiment, the method for automatically detecting the injection allowance of the injector is applied to an injector driving device 20, wherein the injector driving device 20 includes a motor 242, a push handle 26, a sliding member 246, a light barrier 32, and a first optical coupler 34, wherein the push handle 26 is detachably connected to a push rod 12 of the injector 10, the motor 242 drives the push handle 26 to move during operation, the push handle 26 drives the push rod 12 of the injector 10 to perform a drawing or injection motion while moving, the light barrier 32 is fixed on the sliding member 246 and synchronously maintains a back-and-forth movement of a linear path along with the push handle 26, and the first optical coupler 34 is disposed at a starting point of the linear path, wherein the method for automatically detecting the injection allowance includes steps S11-S22.
In step S11, the motor 242 drives the push handle 26 to move during operation, and drives the push rod 12 of the injector 10 to perform a drawing action.
In step S12, it is determined whether the light-blocking panel 32 has reached the position of the first light coupler 34.
In step S13, if the light barrier 32 reaches the position of the first light coupler 34, the push rod 12 of the injector 10 is controlled to stop the extraction motion.
In step S14, an injection operation of the plunger 12 of the injector 10 is initiated.
In step S15, the movement distance L1 of the light-blocking panel 32 in the straight path is calculated.
In step S16, the injection allowance V1 of the syringe is automatically calculated according to the movement distance L1, the total length L2 of the straight path, and the maximum capacity V2 of the syringe. In the present embodiment, the remaining injection amount V1 of the syringe 10 is (L2-L1)/L2 × V2.
In this embodiment, the injector driving device 20 includes a second optical coupler 34, the second optical coupler 34 is disposed on a straight path and close to the first optical coupler 34, and a position of the second optical coupler 34 corresponds to a 50ml position of the injector 10, wherein the method for automatically detecting the injection allowance further includes:
in step S17, it is determined whether the light-blocking panel 32 reaches the position of the second photocoupler 34;
in step S18, if the light barrier 32 reaches the position of the second light coupler 34, the injection allowance of the injector 10 is automatically determined to be 50 ml.
In this embodiment, the injector driving device 20 includes a third optical coupler 34, the third optical coupler 34 is disposed on a straight path and close to the second optical coupler 34, a position of the third optical coupler 34 corresponds to a 10ml position of the injector 10, and the method for automatically detecting the injection allowance further includes:
in step S19, it is determined whether the light-blocking panel 32 reaches the position of the third photocoupler 34;
in step S20, if the light barrier reaches the position of the third light coupler 34, the injection allowance of the injector 10 is automatically determined to be 10 ml.
In this embodiment, the injector driving device 20 includes a fourth optical coupler 34, the fourth optical coupler 34 is disposed at an end point on the straight path and close to the third optical coupler 34, a position of the fourth optical coupler 34 corresponds to a 0ml position of the injector 10, and the method for automatically detecting the injection remaining amount further includes:
in step S21, it is determined whether the light-blocking panel 32 reaches the position of the fourth photocoupler 34;
in step S22, if the light barrier 32 reaches the position of the fourth optical coupler 34, it is automatically determined that the injection allowance of the injector 10 is 0ml, and the power-off reset detection is performed.
In the present embodiment, the injection allowance detection mechanism 30 includes four photo-couplers 34, and the four photo-couplers 34 are arranged in a straight line on a stroke path of the light-blocking plate 32. Referring to fig. 4, the four optical couplers are distributed in sequence from 34 left to right. Specifically, the first optocoupler 34 on the right is used for power-off reset detection, and the light blocking sheet 32 is located at the position during power-off; the second optical coupler 34 on the right side is the position of 10ml of the injector, and when the light blocking sheet 32 is in the position during injection, a software algorithm is started to calculate when the light blocking sheet is injected into 10 ml; the first optocoupler 34 on the left side is at the position with the maximum extraction amount, and extraction is stopped at the position during extraction, so that extraction action cannot be continuously performed, and injection is only performed; the second opto-coupler 34 on the left is the injector 50ml position, providing a position reference for the software.
Fig. 9 is a block diagram of an automatic injection-allowance detection system 1 for an injector according to an embodiment of the present invention.
In this embodiment, the automatic injection allowance detection system 1 of the injector is applied to an injector driving device 20, wherein the injector driving device 20 includes a motor 242, a push handle 26, a slider 246, a light barrier 32, and a first optical coupler 34, wherein the push handle 26 is detachably connected to a push rod 12 of the injector 10, the motor 242 drives the push handle 26 to move during operation, the push handle 26 drives the push rod 12 of the injector 10 to perform an extraction or injection motion while moving, the light barrier 32 is fixed on the slider 246 and synchronously keeps a back-and-forth movement of a linear path along with the push handle 26, and the first optical coupler 34 is disposed at a starting point of the linear path, wherein the automatic injection allowance detection system 1 includes an extraction module 11, a judgment module 12, a control module 13, and a calculation module 14.
The extraction module 11 is used for driving the push handle to move in the running process of the motor and driving a push rod of the injector to perform extraction action;
the judging module 12 is used for judging whether the light barrier reaches the position of the first optocoupler;
the control module 13 is used for controlling the push rod of the injector to stop the extraction action and starting the injection action of the push rod of the injector if the light barrier reaches the position of the first optocoupler;
and the calculating module 14 is used for calculating the movement distance of the light barrier in the linear path and automatically calculating the injection allowance of the injector according to the movement distance, the total length of the linear path and the maximum capacity of the injector.
In this embodiment, the injector driving device 20 includes a second optical coupler 34, the second optical coupler 34 is disposed on a straight path and close to the first optical coupler 34, a position of the second optical coupler 34 corresponds to a position of 50ml of the injector 10, wherein the determining module 12 is further configured to determine whether the light barrier 32 reaches the position of the second optical coupler 34; the calculation module 14 is further configured to automatically determine that the injection allowance of the injector 10 is 50ml if the light barrier 32 reaches the position of the second light coupler 34.
In this embodiment, the injector driving device 20 includes a third optical coupler 34, the third optical coupler 34 is disposed on a straight path and close to the second optical coupler 34, a position of the third optical coupler 34 corresponds to a position of 10ml of the injector 10, wherein the determining module 12 is further configured to determine whether the light barrier 32 reaches the position of the third optical coupler 34; the calculation module 14 is further configured to automatically determine that the injection allowance of the injector 10 is 10ml if the light barrier 32 reaches the position of the third optical coupler 34.
In this embodiment, the injector driving device 20 includes a fourth optical coupler 34, the fourth optical coupler 34 is disposed at an end point on the linear path and is close to the third optical coupler 34, a position of the fourth optical coupler 34 corresponds to a 0ml position of the injector 10, and the determining module 12 is further configured to determine whether the light barrier 32 reaches the position of the fourth optical coupler 34; the calculation module 14 is further configured to automatically determine that the injection allowance of the injector 10 is 0ml and perform shutdown reset detection if the light barrier 32 reaches the position of the fourth optical coupler 34.
In addition, the present invention also provides a computer readable storage medium, wherein the computer readable storage medium has stored thereon a computer program, which when executed by a processor, implements the steps S11-S22 of the automatic detection method for injection remaining amount of an injector as described above.
In addition, the present invention also provides a syringe pump, wherein the syringe pump includes a memory and a processor, the memory stores computer processing instructions, and the processor executes the steps S11-S22 of the injection remaining amount automatic detection method of a syringe as described above by calling the computer processing instructions.
In addition, the invention also provides a radio frequency ablation system, which comprises an ablation catheter, an ablation instrument connected with the ablation catheter and a syringe pump, and is characterized in that the syringe pump is the syringe pump 100. The injection pump 100 is connected with the ablation instrument and can automatically deliver heat exchange medium to the ablation part according to the ablation process.
In the technical scheme provided by the embodiment of the invention, the thrust of the motor is detected by the pressure detection mechanism, the injection quantity output by the injector is controlled by the thrust of the motor, automatic injection can be realized, and the four optocouplers 34 are linearly arranged on the stroke path of the light barrier 32, so that the automatic detection of the injection allowance can be realized, and the working efficiency is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
In the present invention, unless otherwise explicitly specified or limited, the first feature "on" or "under" the second feature may be directly contacting the first feature and the second feature or indirectly contacting the first feature and the second feature through an intermediate.
Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lower level than the second feature.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (11)

1. The automatic detection method for the injection allowance of the injector is applied to an injection pump, and is characterized in that the injection pump comprises the injector and an injector driving device, the injector driving device comprises a motor, a push handle, a sliding part, a light barrier and a first optical coupler, wherein the push handle is detachably connected with a push rod of the injector, the motor drives the push handle to move in the operation process, the push handle drives the push rod of the injector to perform extraction or injection actions while moving, the light barrier is fixed on the sliding part and synchronously keeps the reciprocating motion of a linear path along with the push handle, and the first optical coupler is arranged at the starting point of the linear path, wherein the automatic detection method for the injection allowance comprises the following steps:
the motor drives the push handle to move in the running process and drives the push rod of the injector to perform extraction action;
judging whether the light barrier reaches the position of the first optocoupler or not;
if the light barrier reaches the position of the first optocoupler, controlling a push rod of the injector to stop extracting;
starting the injection action of a push rod of the injector;
calculating the movement distance of the light barrier in the straight path;
and automatically calculating the injection allowance of the injector according to the movement distance, the total length of the linear path and the maximum capacity of the injector.
2. The automatic injection margin detection method of a syringe according to claim 1, wherein the syringe driving device includes a second optical coupler disposed on the linear path and adjacent to the first optical coupler, and a position of the second optical coupler corresponds to a 50ml position of the syringe, wherein the automatic injection margin detection method further comprises:
judging whether the light barrier reaches the position of the second optocoupler or not;
and if the light barrier reaches the position of the second optocoupler, automatically determining that the injection allowance of the injector is 50 ml.
3. The automatic injection margin detection method of a syringe according to claim 2, wherein the syringe driving device comprises a third optical coupler, the third optical coupler is disposed on the straight path and close to the second optical coupler, and a position of the third optical coupler corresponds to a 10ml position of the syringe, wherein the automatic injection margin detection method further comprises:
judging whether the light barrier reaches the position of the third optocoupler or not;
and if the light barrier reaches the position of the third optocoupler, automatically determining that the injection allowance of the injector is 10 ml.
4. The automatic detection method of injection allowance of injector of claim 3, wherein the injector driving device comprises a fourth optical coupler, the fourth optical coupler is arranged at an end point on the straight path and close to the third optical coupler, and the position of the fourth optical coupler corresponds to the 0ml position of the injector, wherein the automatic detection method of injection allowance further comprises:
judging whether the light barrier reaches the position of the fourth optocoupler or not;
and if the light barrier reaches the position of the fourth optocoupler, automatically determining that the injection allowance of the injector is 0ml, and performing shutdown reset detection.
5. The utility model provides an injection allowance automatic check out system of syringe, is applied to the syringe pump, its characterized in that, the syringe pump includes syringe and syringe drive arrangement, and syringe drive arrangement includes the motor, pushes away handle, slider, barn door, first opto-coupler, wherein, push away the handle with the push rod detachably of syringe is connected, the motor drives in the moving process push away the motion of handle, push away the handle and drive the push rod of syringe when the motion draws or injects the action, the barn door is fixed on the slider and along with push away the handle and keep the back and forth movement of sharp route in step, first opto-coupler setting is in the starting point department of sharp route, wherein, injection allowance automatic check out system includes:
the extraction module is used for driving the push handle to move in the running process of the motor and driving a push rod of the injector to perform extraction action;
the judging module is used for judging whether the light barrier reaches the position of the first optocoupler or not;
the control module is used for controlling a push rod of the injector to stop the extraction action and starting the injection action of the push rod of the injector if the light barrier reaches the position of the first optocoupler;
and the calculation module is used for calculating the movement distance of the light barrier in the linear path and automatically calculating the injection allowance of the injector according to the movement distance, the total length of the linear path and the maximum capacity of the injector.
6. The automatic detection system for the injection allowance of the injector according to claim 5, wherein the injector driving device comprises a second optical coupler, the second optical coupler is arranged on the straight path and close to the first optical coupler, the position of the second optical coupler corresponds to the 50ml position of the injector, and the determination module is further configured to determine whether the light barrier reaches the position of the second optical coupler; the calculation module is further used for automatically determining that the injection allowance of the injector is 50ml if the light barrier reaches the position of the second optical coupler.
7. The automatic injection allowance detection system of claim 6, wherein the injector driving device comprises a third optical coupler, the third optical coupler is arranged on the linear path and close to the second optical coupler, the position of the third optical coupler corresponds to the 10ml position of the injector, and the determination module is further configured to determine whether the light barrier reaches the position of the third optical coupler; the calculation module is further used for automatically determining that the injection allowance of the injector is 10ml if the light barrier reaches the position of the third optocoupler.
8. The automatic detection system for the injection allowance of the injector according to claim 7, wherein the injector driving device comprises a fourth optical coupler, the fourth optical coupler is arranged at an end point on the straight path and is close to the third optical coupler, the position of the fourth optical coupler corresponds to the 0ml position of the injector, and the determination module is further configured to determine whether the light barrier reaches the position of the fourth optical coupler; and the calculation module is also used for automatically determining that the injection allowance of the injector is 0ml and carrying out shutdown reset detection if the light barrier reaches the position of the fourth optocoupler.
9. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps of the method for automatically detecting an injection margin of an injector according to any one of claims 1 to 4.
10. A syringe pump, characterized in that it comprises a memory storing computer processing instructions and a processor executing the method of automatic detection of the remaining injection quantity of the syringe of any one of the preceding claims 1 to 4 by calling said computer processing instructions.
11. A radio frequency ablation system comprising an ablation catheter, an ablator connected to the ablation catheter, and a syringe pump, wherein the syringe pump is the syringe pump of claim 10.
CN202110179037.5A 2021-02-09 2021-02-09 Automatic detection method for injection allowance of injector, injection pump and radio frequency ablation system Pending CN112983775A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2259906Y (en) * 1996-08-27 1997-08-20 苏州医学院 Medical purpose long distance controlled quick action infusion pump
CN1671440A (en) * 2002-08-08 2005-09-21 株式会社根本杏林堂 Medicine liquid injection device where medicine liquid sucked up from medicine liquid tank and injected to subject does not flow back
CN204337416U (en) * 2014-12-18 2015-05-20 浙江史密斯医学仪器有限公司 A kind of injection residual quantity recognition device and syringe pump
CN207734413U (en) * 2017-09-04 2018-08-17 浙江史密斯医学仪器有限公司 The syringe pump of structure with whole infusion safety detection and near-space detection
CN208541402U (en) * 2017-11-30 2019-02-26 中国科学技术大学 A kind of radio frequency ablation system
CN112007239A (en) * 2020-09-24 2020-12-01 浙江迈帝康医疗器械有限公司 Control method of syringe pump, and computer-readable storage medium

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2259906Y (en) * 1996-08-27 1997-08-20 苏州医学院 Medical purpose long distance controlled quick action infusion pump
CN1671440A (en) * 2002-08-08 2005-09-21 株式会社根本杏林堂 Medicine liquid injection device where medicine liquid sucked up from medicine liquid tank and injected to subject does not flow back
CN204337416U (en) * 2014-12-18 2015-05-20 浙江史密斯医学仪器有限公司 A kind of injection residual quantity recognition device and syringe pump
CN207734413U (en) * 2017-09-04 2018-08-17 浙江史密斯医学仪器有限公司 The syringe pump of structure with whole infusion safety detection and near-space detection
CN208541402U (en) * 2017-11-30 2019-02-26 中国科学技术大学 A kind of radio frequency ablation system
CN112007239A (en) * 2020-09-24 2020-12-01 浙江迈帝康医疗器械有限公司 Control method of syringe pump, and computer-readable storage medium

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