CN110859611A - Board card formula electrophysiological signal amplification system - Google Patents
Board card formula electrophysiological signal amplification system Download PDFInfo
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- CN110859611A CN110859611A CN201911317470.XA CN201911317470A CN110859611A CN 110859611 A CN110859611 A CN 110859611A CN 201911317470 A CN201911317470 A CN 201911317470A CN 110859611 A CN110859611 A CN 110859611A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/0215—Measuring pressure in heart or blood vessels by means inserted into the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/683—Means for maintaining contact with the body
- A61B5/6832—Means for maintaining contact with the body using adhesives
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
- A61B5/6847—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive mounted on an invasive device
- A61B5/6852—Catheters
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
- A61B5/6867—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive specially adapted to be attached or implanted in a specific body part
- A61B5/6869—Heart
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7225—Details of analog processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/0223—Magnetic field sensors
Abstract
The invention relates to the technical field of medical instruments, in particular to a plate-clamp type electrophysiological signal amplification system, which comprises an accessory unit, an electrophysiological signal amplification device, an operation workstation and a graphic workstation, wherein the accessory unit is medical peripheral equipment and medical consumables, a signal input port of the accessory unit is connected with a patient by using the medical consumables, a signal output port of the accessory unit is connected with a signal input end of the electrophysiological signal amplification device by using a medical catheter/connecting cable, and a signal output end of the electrophysiological signal amplification device is connected with the operation workstation and the graphic workstation by using a wired/wireless connection mode. The overall size of the electrophysiological system is reduced, making it convenient for debugging, installation, maintenance and upgrade.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a plate-card type electrophysiological signal amplification system.
Background
In the medical field, particularly in interventional procedures, cardiac ablation procedures are commonly performed using electrophysiological systems and intracardiac mapping catheters to treat diseases caused by ectopic pacing of the heart, such as atrial fibrillation, atrial flutter, and the like. For the present electrophysiological system, as shown in fig. 1, the structure is mainly composed of three major parts, namely a patient connection unit, an amplifier and a physician's graphics workstation. The patient who receives the intervention operation is connected with the electrophysiological signal amplification device through a medical catheter and a series of connecting cables, the electrophysiological signals of the patient are amplified by the electrophysiological signal amplification device and then sent to the operation workstation, and the electrophysiological signals are processed by the software system and displayed on a screen for diagnosis and treatment of doctors. The electrophysiological signal amplifier at the core position of the system needs to realize the functions of signal acquisition, amplification, A/D conversion, digital signal processing, digital communication and the like, and simultaneously needs to supply power to the whole electrophysiological system and integrate auxiliary functions of patient protection and the like.
However, the existing electrophysiological system usually adopts a single board card design, i.e. all the functions are integrated on a single main board, and as with the main board of a computer, the main board is connected to external devices and apparatuses through slots and connectors on the board. Although the design seems direct, the utilization efficiency of the interior of the case is not high, so that the product volume is overlarge and is inconvenient to transport and install; when a certain functional module of a product has a problem, the whole main board card is usually required to be tested and diagnosed, even completely replaced, which consumes a lot of time and labor for assembly, debugging and maintenance personnel, and is not in line with the requirements of hospitals using the equipment on equipment maintenance, particularly on the time and efficiency of field maintenance; meanwhile, the size of the main plate is too large, the main plate is not suitable for an automatic testing system, only manual testing can be adopted, the problems of complicated procedures and long time consumption exist, and meanwhile, due to factors such as the self quality and the training of testers, errors are easy to occur, so that the overall reliability of products is reduced.
On the other hand, the existing electrophysiological systems often expand the number of acquisition channels and expand the functions of other mapping and positioning, etc. according to the user's needs. Therefore, the product is often redesigned, retested and re-registered, which consumes a lot of economic and time cost, and hardware upgrade of the single-board card type electrophysiological system is very difficult, and cannot meet the latest market demand in time.
Therefore, it is necessary to design an electrophysiological system signal amplification system with definite functional partition, small volume, convenient assembly, maintenance and repair.
Disclosure of Invention
The invention breaks through the difficult problems in the prior art and designs the electrophysiological signal amplification system which has clear functional partition, small volume, convenient assembly, convenient maintenance and convenient repair.
In order to achieve the above object, the present invention provides a card-type electrophysiological signal amplification system, which comprises an accessory unit, an electrophysiological signal amplification device, an operation workstation and a graphics workstation, and is characterized in that:
the accessory unit is medical peripheral equipment and medical consumables, a signal input port of the accessory unit is connected with a patient by using the medical consumables, a signal output port of the accessory unit is connected with a signal input end of the physiological signal amplifying device by using a medical catheter/connecting cable, and a signal output end of the physiological signal amplifying device is connected with the operation workstation and the graphic workstation by using a wired/wireless connection mode;
the electrophysiological signal amplification device is a multi-card electrophysiological signal amplification device and comprises a device shell, a signal processing bottom plate, a rack unit and an acquisition card, wherein a plurality of signal through holes are formed in the front side plate of the device shell, heat dissipation ports are formed in the side plates on two sides of the device shell, heat dissipation mesh holes and signal output through holes are formed in the rear side plate of the device shell, the signal processing bottom plate is fixed at the front end in the device shell, signal input insertion ports formed in the front side surface of the signal processing bottom plate are exposed out of the signal through holes, male connector connectors are distributed on the rear side surface of the signal processing bottom plate, female connector connectors are fixed at the front ends of the rack unit and the acquisition card, and the rack unit and the acquisition card are fixedly inserted into the signal processing bottom plate by using the male connectors and the female;
the acquisition card is a single-function acquisition card and comprises a magnetic field positioning board card, a body surface electrocardiogram board card, an intracardiac signal acquisition card and a control board card.
The work flow of the electrophysiological signal amplification system is as follows: after the acquisition card and the rack unit are installed in place, the whole electrophysiological signal amplification device is electrified, the rack unit provides electric energy for other board cards, and information such as power supply current, voltage and the like of each board card is sent to the control board card;
the body surface electrocardiogram board card respectively picks up invasive blood pressure signals and body surface electrocardiosignals of a patient from electrode plates of the medical catheter and the body surface of the patient through a connecting cable in the accessory unit, sends the signals to the control board card after analog amplification, filtering, analog-to-digital conversion, digital filtering and other processing, and simultaneously sends electric field positioning excitation signals and intracardiac stimulation signals to the electrode plates of the medical catheter and the body surface of the patient when the control board card sends an instruction;
the magnetic field positioning board card controls a magnetic field generator in the accessory system, is used for positioning the magnetic field of the medical catheter and sends catheter magnetic field positioning data to the control board card;
the intracardiac signal acquisition board card picks up an exciting signal and an electric field positioning signal in the heart cavity of a patient through a medical catheter, and the signals are subjected to analog amplification, filtering, analog-to-digital conversion, digital filtering and the like and then are sent to the control board card;
and the control board card classifies the collected information of each board card and sends the information to the operation workstation through a communication interface according to a predetermined communication protocol.
The signal input connection ports are invasive blood pressure measurement interfaces, body surface electrocardiogram interfaces, intracardiac signal mapping magnetic field positioning catheter interfaces, electric field excitation signal interfaces, radio frequency ablation catheter interfaces and expansion connection interfaces.
The inside of frame unit is equipped with the fan, and the rear end of frame unit is from last to being equipped with fan window, ground post, supply socket, switch down in proper order.
The rear end of the control board card is provided with an Ethernet interface, a multifunctional interface and an optical fiber interface.
And the rear end of the magnetic field positioning board card is provided with a magnetic field generator interface.
A plurality of heat dissipation through holes are formed in the rear ends of the body surface electrocardiogram board card and the intracardiac signal acquisition card.
The number of the intracardiac signal acquisition cards is more than 2.
The Ethernet interface, the multifunctional interface, the optical fiber interface and the magnetic field generator interface are exposed out of the through hole on the rear side plate of the device shell.
Compared with the prior art, the invention solves the problem that the whole main board card needs to be tested and diagnosed once the electrophysiological system of the single-board card has problems by arranging different functional modules on a plurality of different board cards and then connecting the functional modules with the case unit, reduces the overall size of the electrophysiological system and facilitates debugging, installation, maintenance and upgrading.
Drawings
FIG. 1 is a topological connection diagram of the present invention.
Fig. 2 is a board card connection topology diagram of the electrophysiological signal amplification device of the present invention.
Fig. 3 is a circuit connection topology diagram of the electrophysiological signal amplification device of the present invention.
FIG. 4 is a software functional connection topology of the present invention.
Fig. 5 is a perspective view of the electrophysiological signal amplification device of the present invention.
Fig. 6 is an exploded view of the electrophysiological signal amplification device of the present invention.
Fig. 7 is a rear view of the electrophysiological signal amplification device of the present invention with the rear panel removed.
Fig. 8 is a schematic diagram of a signal processing board of the electrophysiological signal amplification device of the present invention.
Detailed Description
The invention is further described with reference to the accompanying drawings.
Referring to fig. 1 to 8, in a specific implementation, the invention designs a board card type electrophysiological signal amplification system, which comprises an accessory unit, an electrophysiological signal amplification device, an operation workstation and a graphic workstation, wherein the accessory unit 1 is medical peripheral equipment and medical consumables, a signal input port of the accessory unit 1 is connected with a patient by using the medical consumables, a signal output port of the accessory unit 1 is connected with a signal input end of a physiological signal amplification device 2 by using a medical catheter/connection cable, and a signal output end of the physiological signal amplification device 2 is connected with the operation workstation and the graphic workstation 3 by using a wired/wireless connection mode;
the electrophysiological signal amplification device 2 is a multi-card electrophysiological signal amplification device, and comprises a device housing, a signal processing bottom plate 4, a frame unit 5 and an acquisition card 6, wherein a plurality of signal through holes are formed in a front side plate 7 of the device housing, heat dissipation ports 9 are formed in side plates 8 on two sides of the device housing, heat dissipation mesh holes 11 and signal output through holes 12 are formed in a rear side plate 10 of the device housing, the signal processing bottom plate 4 is fixed at the front end in the device housing, signal input insertion ports formed in the front side surface of the signal processing bottom plate 4 are exposed from the signal through holes, male connector connectors 13 are distributed on the rear side surface of the signal processing bottom plate 4, female connector 14 are fixed at the front ends of the frame unit 5 and the acquisition card 6, the frame unit 5 and the acquisition card 6 are fixed with the signal processing bottom plate 4 by means of male connectors and female connectors 13, 14, realizing electrical connection;
the acquisition card 6 is a single-function acquisition card and comprises a magnetic field positioning board card 6-1, a body surface electrocardiogram board card 6-2, an intracardiac signal acquisition card 6-3 and a control board card 6-4.
The working process of the electrophysiological signal amplification system of the invention is as follows: after the acquisition card 6 and the rack unit 5 are installed in place, the whole electrophysiological signal amplification device 2 is powered on, the rack unit 5 provides electric energy for other board cards, and information such as power supply current, voltage and the like of each board card is sent to the control board card 6-4;
the body surface electrocardiogram board card 6-2 respectively picks up invasive blood pressure signals and body surface electrocardiosignals in the body of a patient from electrode plates on the body surfaces of a medical catheter and the patient through a connecting cable in the accessory unit 1, sends the signals to the control board card 6-4 after analog amplification, filtering, analog-to-digital conversion, digital filtering and other processing, and simultaneously sends electric field positioning excitation signals and intracardiac stimulation signals to the electrode plates on the body surfaces of the medical catheter and the patient when the control board card 6-4 sends instructions;
the magnetic field positioning board card 6-1 controls a magnetic field generator in the accessory system, is used for positioning the magnetic field of the medical catheter, and sends catheter magnetic field positioning data to the control board card 6-4;
the intracardiac signal acquisition board card picks up an exciting signal and an electric field positioning signal in the heart cavity of a patient through a medical catheter, and the signals are subjected to analog amplification, filtering, analog-to-digital conversion, digital filtering and the like and then are sent to the control board card 6-4;
the control board 6-4 classifies the collected information of each board, and sends the information to the operation workstation through a communication interface according to a predetermined communication protocol.
The signal input connection ports of the invention are an invasive blood pressure measurement interface 15, a body surface electrocardiogram interface 16, an intracardiac signal mapping magnetic field positioning catheter interface 17, an electric field excitation signal interface 18, a radio frequency ablation catheter interface 19 and an expansion connection interface 20.
In the invention, a fan is arranged in the rack unit 5, and a fan window 21, a grounding post 22, a power socket 23 and a power switch 24 are sequentially arranged at the rear end of the rack unit 5 from top to bottom.
The rear end of the control board card 6-4 is provided with an Ethernet interface 25, a multifunctional interface 26 and an optical fiber interface 27.
The rear end of the magnetic field positioning board card 6-1 is provided with a magnetic field generator interface 28.
In the invention, a plurality of heat dissipation through holes 29 are formed at the rear ends of the body surface electrocardiogram board card 6-2 and the intracardiac signal acquisition card 6-3.
The number of the signal acquisition cards 6-3 in the center of the invention is 4.
The Ethernet interface 25, the multifunctional interface 26, the optical fiber interface 27 and the magnetic field generator interface 28 are exposed out of the through hole 12 on the rear side plate 10 of the device shell.
Referring to fig. 1, the present invention is composed of three functional modules: the device comprises an accessory unit 1, an electrophysiological signal amplification device 2, an operation workstation and a graphic workstation (DWS) 3, wherein the accessory unit 1 comprises peripheral equipment and medical consumables such as a connecting cable 1-1, a magnetic field positioning ablation catheter 1-2, a magnetic field generator 1-3, body surface excitation electrode plates 1-4 and the like. The electrophysiological signal amplification device 2 consists of a rack unit 5, a magnetic field positioning board card 6-1, a body surface electrocardiogram board card 6-2, four intracardiac signal acquisition board cards 6-3 and a control board card 6-4. The main components of the operation workstation and the graphics workstation (DWS) 3 are the graphics workstation, which consists of a computer and installed software, wherein the software functional modules comprise a communication subunit 3-1, a data processing subunit 3-2, a file storage subunit 3-3, a display rendering subunit 3-4 and a user control subunit 3-5.
Referring to fig. 2, the rack unit 5 is connected to the collection cards 6 to provide electric energy for the collection cards 6, and sends information such as supply current and voltage of each collection card to the control board 6-4, and the fan mounted in the chassis plays a role in heat dissipation.
The control board card 6-4 is responsible for collecting the operation information of other acquisition cards and controlling the operation information. The body surface electrocardiogram board card 6-2 picks up invasive blood pressure signals and body surface electrocardiosignals in a patient body from electrode plates of a medical catheter and the body surface of the patient respectively through a connecting cable 1-1 in the accessory unit 1, sends the signals to the control board card 6-4 after analog amplification, filtering, analog-to-digital conversion, digital filtering and other processing, and sends electric field positioning excitation signals and intracardiac stimulation signals to the medical catheter and the body surface electrode plates of the patient when the control board card 6-4 sends instructions.
The magnetic field positioning board card 6-1 controls a magnetic field generator 1-3 in the accessory unit 1, is used for positioning the magnetic field of the medical catheter, and sends catheter magnetic field positioning data to the control board card 6-4.
The four intracardiac signal acquisition board cards 6-3 pick up exciting signals and electric field positioning signals in the heart cavity of a patient through the medical catheter, carry out analog amplification, filtering, analog-to-digital conversion, digital filtering and the like on the signals, and then send the signals to the control board card 6-4.
The control board 6-4 classifies the collected information of each acquisition card, and transmits the information to the operation workstation and the graphics workstation (DWS) 3 through a communication interface according to a predetermined communication protocol.
Referring to fig. 3, inside the dashed box is the present invention and outside the dashed box are some external devices. The connection among the acquisition cards in the invention is realized through different functional buses. The power bus draws power required by each acquisition card 6, including positive and negative power used by the amplifier and single-ended power used by the digital circuit, from the chassis unit 5 and supplies the power to other acquisition cards. The communication bus is formed by a communication bus of ethernet or other bus topology to meet the requirements of transmission speed. Each acquisition card comprises an Ethernet interface connected with a control board card, the control board card comprises an Ethernet switch for controlling communication between the board cards, the control board card is connected with an external workstation through an optical fiber, control instructions of all hardware by the workstation are issued to the control board card, and then the control board card analyzes the control instructions and sends the control instructions to the acquisition cards with corresponding functions to be executed through the Ethernet switch.
The control mode of indirectly sending the instruction simplifies the connection between external equipment and each acquisition card and has higher reliability. The command synchronization bus sends command synchronization signals by the control board card, then the command synchronization signals are received by other acquisition cards, when control commands are issued by an external workstation, the command synchronization bus can ensure that the command synchronization signals are synchronously received by other function acquisition cards, and the command transmission delay from the workstation to the function acquisition cards through the control board card is reduced.
The analog bus exists among the body surface electrocardiogram board card, the magnetic field positioning board card and the intracardiac signal acquisition cards related to the signal acquisition of the patient, and performs data exchange and acquisition channel switching control on other analog signal acquisition board cards by transmitting analog signals acquired by each acquisition card. The equipment bus is connected with all the acquisition cards, transmits identification information of each acquisition card and an IP address of Ethernet communication, and transmits the identification information and the communication IP address of all the acquisition cards to the control board card to be identified by the workstation after being processed. The synchronous clocks of all the board cards are generated by the control board card so as to realize the clock synchronization among the acquisition cards. In addition, the control board card also generates a collecting time sequence signal to control the collecting time sequence of the analog signal collecting board card.
Referring to fig. 4, after receiving the information sent from the control board of the electrophysiological signal amplification device from the communication interface, the operation workstation calls the data engine to store the information in the file system, and simultaneously sends the information to the waveform processing sub-module and the data access sub-module, respectively.
The waveform processing submodule performs further operations such as digital filtering, digital notch and the like on the electrophysiological signal waveform, and then sends the electrophysiological signal waveform to a graphic rendering engine for 3D modeling, mapping and waveform display. The data access submodule stores the information of the patient and all the information collected by the electrophysiological signal amplification device in the operation process, so that a doctor can review waveforms and playback the operation process conveniently, meanwhile, the control engine sends an instruction to the communication interface through the stimulation delivery submodule, and delivers intracardiac stimulation signals to the medical catheter through the intracardiac signal acquisition board card of the electrophysiological signal amplification device, so that the doctor can cause arrhythmia of the patient, and therefore an ectopic pacing point in the cardiac chamber of the patient is searched.
The control engine also judges the type of the inserted medical catheter through the data transmitted from the communication interface, so that a doctor can conveniently configure the catheter, simultaneously control an external printer to print a real-time waveform result, and simultaneously record the operation event of the software during the operation process of the doctor. All functions of the software are interacted with the physician by a user graphical interface.
Referring to fig. 5-7, the device shell of the electrophysiological signal amplification device of the present invention is composed of six side plates, i.e., an upper side plate, a lower side plate, a left side plate, a right side plate, a front side plate, a rear side plate, a left side plate, a right side plate, a left side plate, a right. The left and right side plates have a structure of a heat dissipation port 9 for heat dissipation of the system. The signal processing bottom plate 4 is provided with a male connector 13 which is used for being connected with the rack unit 5, the control board card 6-4, the magnetic field positioning board card 6-1, the body surface electrocardiogram board card 6-2 and the intracardiac signal acquisition card 6-3, each board card is provided with a female connector, and the female connectors are mechanically matched with the male connectors on the bottom plate to realize electrical connection, so that connection by using a wire harness is omitted, the connection reliability is enhanced, and the use efficiency of the internal space of the case is improved.
All the acquisition cards are provided with fixing holes, so that the acquisition cards can be conveniently fixed in the chassis. The functional modules of the acquisition card are clearly distinguished, so that the system is more suitable for an automatic test system to test. When the device is installed, all the finished acquisition cards are inserted into the assembled case for fixing, and then the rear cover plate of the case is installed. When a certain acquisition card breaks down and needs to be maintained and replaced, the rear cover plate is detached, the fixing screws are detached, and the acquisition card is pulled out from the signal processing bottom plate to replace a new card, so that the time and efficiency requirements of a hospital on field maintenance of equipment are met, and the replaced acquisition card can be brought back by maintenance personnel to be detected and repaired. Meanwhile, if the hardware needs to be upgraded and updated, only the position of a connector of the acquisition card needs to be kept unchanged, and a bus type communication method between the acquisition cards is not changed, so that a certain function can be upgraded and updated conveniently.
The electrophysiological signal amplification device of the invention is provided with an invasive blood pressure measuring interface 15, a body surface electrocardiogram interface 16, an intracardiac signal mapping magnetic field positioning catheter interface 17, an electric field excitation signal interface 18, a radio frequency ablation catheter interface 19, an expansion connection interface 20 and an indicator light 30, wherein each interface is used for connecting a corresponding medical catheter, acquiring electrophysiological signals from the body of a patient and simultaneously transmitting the electric field excitation signals.
Referring to fig. 8, the signal processing board is provided with a male connector 13, a power connector 31 and fixing screw holes 32, the male connector 13 is used for interconnecting with the rack unit 5 and each acquisition card, the power connector 31 supplies power to other acquisition cards through the connected rack unit 5, and the fixing screw holes are used for fixing the power connectors on the inner side of the front panel.
Claims (9)
1. A board card formula electrophysiological signal amplification system, includes annex unit, electrophysiological signal amplification device, operation workstation and figure workstation, its characterized in that:
the accessory unit (1) is medical peripheral equipment and medical consumables, a signal input port of the accessory unit (1) is connected with a patient by using the medical consumables, a signal output port of the accessory unit (1) is connected with a signal input end of the physiological signal amplifying device (2) by using a medical catheter/connecting cable, and a signal output end of the physiological signal amplifying device (2) is connected with the operation workstation and the graphic workstation (3) by using a wired/wireless connection mode;
the electrophysiological signal amplification device (2) is a multi-card electrophysiological signal amplification device and comprises a device shell, a signal processing bottom plate (4), a frame unit (5) and an acquisition card (6), wherein a plurality of signal through holes are formed in a front side plate (7) of the device shell, heat dissipation ports (9) are formed in side plates (8) on two sides of the device shell, a heat dissipation mesh (11) and a signal output through hole (12) are formed in a rear side plate (10) of the device shell, the signal processing bottom plate (4) is fixed to the front end in the device shell, signal input insertion ports formed in the front side surface of the signal processing bottom plate (4) are exposed from the signal through holes, male connectors (13) are distributed on the rear side surface of the signal processing bottom plate (4), female connectors (14) are fixedly arranged at the front ends of the frame unit (5) and the acquisition card (6), and the frame unit (5), The acquisition card (6) is fixedly connected with the signal processing bottom plate (4) in an inserting way by utilizing male and female connector (13, 14) to realize electrical connection;
the acquisition card (6) is a single-function acquisition card and comprises a magnetic field positioning board card (6-1), a body surface electrocardiogram board card (6-2), an intracardiac signal acquisition card (6-3) and a control board card (6-4).
2. The board-card electrophysiological signal amplification system of claim 1, wherein: the work flow of the electrophysiological signal amplification system is as follows: after the acquisition card (6) and the rack unit (5) are installed in place, the whole electrophysiological signal amplification device (2) is electrified, the rack unit (5) provides electric energy for other board cards, and information such as power supply current, voltage and the like of each board card is sent to the control board card (6-4);
the body surface electrocardiogram board card (6-2) respectively picks up invasive blood pressure signals and body surface electrocardiosignals of a patient from electrode plates of a medical catheter and the body surface of the patient through a connecting cable in the accessory unit (1), sends the signals to the control board card (6-4) after analog amplification, filtering, analog-to-digital conversion, digital filtering and other processing, and simultaneously sends electric field positioning excitation signals and intracardiac stimulation signals to the electrode plates of the medical catheter and the body surface of the patient when the control board card (6-4) sends instructions;
the magnetic field positioning board card (6-1) controls a magnetic field generator in the accessory system, is used for positioning the magnetic field of the medical catheter, and sends catheter magnetic field positioning data to the control board card (6-4);
the intracardiac signal acquisition board card picks up an exciting signal and an electric field positioning signal in the heart cavity of a patient through a medical catheter, and the signals are subjected to analog amplification, filtering, analog-to-digital conversion, digital filtering and the like and then are sent to the control board card (6-4);
the control board card (6-4) classifies the collected information of each board card, and sends the information to the operation workstation through a communication interface according to a predetermined communication protocol.
3. The board-card electrophysiological signal amplification system of claim 1, wherein: the signal input connection ports are an invasive blood pressure measurement interface (15), a body surface electrocardiogram interface (16), an intracardiac signal mapping magnetic field positioning catheter interface (17), an electric field excitation signal interface (18), a radio frequency ablation catheter interface (19) and an expansion connection interface (20).
4. The board-card electrophysiological signal amplification system of claim 1, wherein: the fan is arranged in the rack unit (5), and a fan window (21), a grounding column (22), a power socket (23) and a power switch (24) are arranged at the rear end of the rack unit (5).
5. The board-card electrophysiological signal amplification system of claim 1, wherein: the rear end of the control board card (6-4) is provided with an Ethernet interface (25), a multifunctional interface (26) and an optical fiber interface (27).
6. The board-card electrophysiological signal amplification system of claim 1, wherein: the rear end of the magnetic field positioning board card (6-1) is provided with a magnetic field generator interface (28).
7. The board-card electrophysiological signal amplification system of claim 1, wherein: the rear ends of the body surface electrocardiogram board card (6-2) and the intracardiac signal acquisition card (6-3) are provided with a plurality of heat dissipation through holes (29).
8. A card-type electrophysiological signal amplification system according to claim 1 or 7, wherein: the number of the intracardiac signal acquisition cards (6-3) is more than 2.
9. A card-type electrophysiological signal amplification system according to claim 5 or 6, wherein: the Ethernet interface (25), the multifunctional interface (26), the optical fiber interface (27) and the magnetic field generator interface (28) are exposed out of the through hole (12) on the rear side plate (10) of the device shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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