CN111281428A - Ultrasonic probe for monitoring hemodynamic parameters - Google Patents
Ultrasonic probe for monitoring hemodynamic parameters Download PDFInfo
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- CN111281428A CN111281428A CN202010089676.8A CN202010089676A CN111281428A CN 111281428 A CN111281428 A CN 111281428A CN 202010089676 A CN202010089676 A CN 202010089676A CN 111281428 A CN111281428 A CN 111281428A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/06—Measuring blood flow
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/08—Detecting organic movements or changes, e.g. tumours, cysts, swellings
- A61B8/0891—Detecting organic movements or changes, e.g. tumours, cysts, swellings for diagnosis of blood vessels
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/12—Diagnosis using ultrasonic, sonic or infrasonic waves in body cavities or body tracts, e.g. by using catheters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
- A61B8/4483—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer
- A61B8/4488—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer the transducer being a phased array
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
- A61B8/4483—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer
- A61B8/4494—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer characterised by the arrangement of the transducer elements
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/48—Diagnostic techniques
- A61B8/488—Diagnostic techniques involving Doppler signals
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2503/00—Evaluating a particular growth phase or type of persons or animals
- A61B2503/08—Elderly
Abstract
The invention relates to the technical field of medical instruments, in particular to an ultrasonic probe for monitoring hemodynamic parameters, which comprises a tube body, a first ultrasonic transducer, a second ultrasonic transducer, an acoustic reflector and a driving device, wherein the first ultrasonic transducer is arranged at the end part of the tube body and emits a first sound beam to the outside of the tube body, the second ultrasonic transducer is arranged inside the tube body and emits a second sound beam to the acoustic reflector, the acoustic reflector is arranged inside the tube body and is connected with the driving device, and the second sound beam is reflected to the direction vertical to the wall of the tube body through the acoustic reflector. The first ultrasonic transducer emits a first sound beam forwards, receives a first echo signal reflected by red blood cells in blood flow, and calculates to obtain the blood flow velocity; the second ultrasonic transducer emits a second sound beam backwards, the second sound beam is emitted to the sound reflecting mirror, and the sound reflecting mirror emits the second sound beam at an angle perpendicular to the pipe wall of the pipe body and the pipe wall of the blood vessel after reflection, so that the circumference imaging of the blood vessel wall and the inner diameter size calculation of the blood vessel wall are realized.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an ultrasonic probe for monitoring hemodynamic parameters.
Background
In a neonatal intensive care unit, severe children with unstable hemodynamics such as neonatal shock, heart failure, severe asphyxia and the like are often encountered, and clinicians are often difficult to objectively evaluate the hemodynamics state of the critically ill children according to the clinical manifestations of the critically ill children. Similarly, it is difficult for physicians to objectively evaluate hemodynamic status based on their clinical manifestations for patients in anesthesia surgery and patients at high risk of remaining unconscious after surgery. The change of the hemodynamic parameters means that the condition of a patient is abnormal, if a doctor cannot take measures in time, the patient often dies, and even if the doctor survives the rescue, the prognosis effect is very poor due to the fact that the doctor cannot take the measures in time. Therefore, for critically ill patients, elderly patients or neonates undergoing general anesthesia surgery, it is necessary to enhance hemodynamic management, improve safety of post-operative monitoring and monitoring during anesthesia surgery, and to feed back the patient's condition to the doctor in time.
Currently, the following methods are often used in clinical monitoring of hemodynamics: (1) the thermodilution method is adopted to measure the heart discharge volume value of a patient, but the method needs to insert a floating catheter into the heart through a puncture method at the position of a superior vena cava or a right atrium, and then physiological saline with lower temperature is continuously injected into the heart of the patient, so that the condition of the patient is aggravated, and certain limitations exist; (2) the heart discharge capacity is monitored by adopting an external Doppler ultrasound method, but an external B-ultrasonic probe is influenced by lung tissues and a sternum, so that very high requirements are put on a doctor's detection method, and a novice doctor often cannot obtain effective heart discharge capacity data; (3) the use of transesophageal ultrasound probes for cardiac output monitoring requires the patient to remain stationary or movement of the patient can cause measurement errors, and transesophageal ultrasound probes are very irritating to the patient and are not used by weak and pediatric patients.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the ultrasonic probe for monitoring the hemodynamic parameters, which can accurately monitor the blood flow speed and the inner diameter size of the blood vessel wall, has small harm to a patient, cannot be influenced by lung tissues and sternum, and has small irritation to the patient.
In order to solve the technical problems, the invention adopts the technical scheme that:
the ultrasonic probe for monitoring the hemodynamic parameters comprises a catheter, a first ultrasonic transducer, a second ultrasonic transducer, a sound reflecting mirror and a driving device for driving the sound reflecting mirror to rotate, wherein the first ultrasonic transducer is arranged at the end of the catheter and emits a first sound beam to the outside of the catheter; the tube body is obtained by curling an FPC (flexible printed circuit), the first ultrasonic transducer and the second ultrasonic transducer are electrically connected with the FPC, and the FPC is in signal connection with a computing and control unit.
According to the ultrasonic probe for monitoring the hemodynamic parameters, the first ultrasonic transducer emits the first sound beam forwards and receives the first echo signal reflected by red blood cells in blood flow, the sound signal of the first echo signal is converted into the electric signal to calculate the blood flow velocity, and the blood flow velocity can be accurately monitored; the second ultrasonic transducer emits a second sound beam backwards, the second sound beam is emitted to the sound reflecting mirror, the sound reflecting mirror emits the second sound beam at an angle vertical to the tube wall of the tube body and the tube wall of the blood vessel after reflection, a second echo signal is reversely transmitted to the second ultrasonic transducer along a path during emission, and the second ultrasonic transducer receives the second echo signal and converts the second echo signal into an electric signal; simultaneously, the driving device drives the acoustic reflector to rotate, and the second sound beam can sweep the blood vessel wall by 360-degree rotating ring to obtain blood vessel wall circumference imaging and blood vessel wall inner diameter. The invention can realize accurate monitoring of the cardiac output only by placing the catheter in the patient, avoid unnecessary intervention injury to the patient and reduce the workload of doctors, and the invention does not need frequent calibration in the cardiac output monitoring process and can obtain higher testing precision.
Furthermore, one end of the first ultrasonic transducer is provided with a first focusing acoustic lens, and the other end of the first ultrasonic transducer is provided with a first conductive backing arranged in a grounding manner; and one end of the second ultrasonic transducer is provided with a second focusing lens, and the other end of the second ultrasonic transducer is provided with a second conductive backing arranged in a grounding manner. The first focusing acoustic lens is used for focusing the first acoustic beam, so that the accuracy of monitoring the blood flow velocity is improved, and the first conductive backing plays a role of leading out a ground wire; the second focusing acoustic lens is used for focusing the second sound beam, so that the measurement precision of the inner diameter size and the circumference imaging of the blood vessel is improved, and accurate monitoring of hemodynamics is facilitated; the second conductive backing serves as a lead-out ground.
Furthermore, the end faces of the first conductive backing and the second conductive backing are jointed, the joint of the first conductive backing and the second conductive backing is connected with a ground wire, and the ground wire is led out and grounded through the FPC. The end faces of the first conductive backing and the second conductive backing are jointed, the ultrasonic probe is compact in structure, and the joint is provided with the ground wire to realize that the first ultrasonic transducer and the second ultrasonic transducer are grounded.
Furthermore, a first signal line is connected to the side of the first ultrasonic transducer, a second signal line is connected to the side of the second ultrasonic transducer, the tube body is an FPC (flexible printed circuit), and the first signal line and the second signal line are electrically connected with the FPC. The first signal wire can transmit an electric signal to the first ultrasonic transducer to excite the first ultrasonic transducer to emit a first sound beam in a pulse ultrasonic Doppler mode, and can convert a first echo signal received by the first ultrasonic transducer into an electric signal and transmit the electric signal to the calculation and control unit for analysis and calculation to obtain the blood flow velocity; the second signal line can transmit an electric signal to the second ultrasonic transducer to excite the second ultrasonic transducer to emit a second beam in a pulse ultrasonic Doppler mode, and can convert a second echo signal received by the second ultrasonic transducer into an electric signal to be transmitted to the calculation and control unit to be analyzed to obtain the inner diameter size of the blood vessel wall and the circumferential imaging of the blood vessel wall.
Further, FPC flexible printed circuit board is including the stratum basale, conducting layer and the protective layer that the cementing set up in order: the conducting layer comprises a first outgoing line, a second outgoing line and a third outgoing line which are arranged in parallel, and the first signal line, the second signal line and the ground wire are respectively and electrically connected with the first outgoing line, the second outgoing line and the third outgoing line; the base layer and the protective layer are polyimide layers, and a polyimide adhesive layer is arranged at the curling connection position of the FPC flexible printed circuit board. The first signal line, the second signal line and the ground wire are respectively led out through a first outgoing line, a second outgoing line and a third outgoing line on the FPC flexible printed circuit board, the stability of signal transmission is good, the line widths of the first outgoing line, the second outgoing line and the third outgoing line are as narrow as possible on the premise of ensuring signal transmission, and the scattering of ultrasound is reduced to the maximum extent; the stratum basale and protective layer all adopt polyimide PI layer, and it not only can play the guard action to the circuit, has better sound effect moreover, and the stratum basale passes through the PI adhesive bonding with the curling overlap joint department of protective layer to obtain the seamless sound tube that passes through that has better electrical property, improve ultrasonic probe's detection precision.
Further, drive arrangement includes motor coil, stator and magnetite, motor coil twines in the body periphery, the stator is fixed in inside the body, the magnetite is located in the body and the magnetite contacts with the stator. The driving device is a micro motor, a motor coil is electrified to excite the magnet to rotate, and the stator provides a supporting point for the magnet.
Furthermore, the tube body is externally connected with a cladding, and the motor coil is arranged in a cavity formed between the cladding and the outer wall of the tube body. The motor coil is hidden in the cavity, so that the damage to human tissues after the motor coil is exposed and placed in a human body is prevented.
Furthermore, the outer wall of the tube body and the outer wall of the cladding are provided with biocompatible films, and the outer diameter of the cladding is 0.7-1.7 mm. The tube body can be endowed with biocompatibility while the tube body is protected by the biological compatibility film layer; the outer diameter of the tube body is set according to the clinically available catheter for interventional operation, but the numerical range is not limited thereto.
Furthermore, the first ultrasonic transducers are in multiple groups, and the multiple groups of first ultrasonic transducers are regularly arranged. A plurality of groups of first ultrasonic transducers are arranged to acquire a plurality of groups of data at the same time, so that the detection accuracy can be improved; the multiple groups of first ultrasonic transducers can be in a regular arrangement mode such as a ring array, a phased array and a single array element.
Furthermore, the second ultrasonic transducers are in multiple groups, and the multiple groups of second ultrasonic transducers are regularly arranged. A plurality of groups of second ultrasonic transducers are arranged to acquire a plurality of groups of data simultaneously so as to improve the detection accuracy; the multiple groups of second ultrasonic transducers can be arranged in a regular arrangement mode such as a ring array and a phased array.
Further, the multiple groups of first ultrasonic transducers, the multiple groups of second ultrasonic transducers and the driving device are all connected to a calculation and control unit, and the calculation and control unit comprises:
the first transmitting part is connected with the first ultrasonic transducer and transmits the first excitation signal to the first ultrasonic transducer; a first receiving part connected to the first ultrasonic transducer, receiving the first echo signal detected by the first ultrasonic transducer and converting the first echo signal into a first electrical signal; a first calculating unit connected to the first receiving unit, for receiving the first electric signal and calculating a blood flow velocity;
the second sending part is connected with the second ultrasonic transducer and transmits a second excitation signal to the second ultrasonic transducer; a second receiving unit connected to the second ultrasonic transducer, for receiving a second echo signal detected by the second ultrasonic transducer and converting the second echo signal into a second electrical signal; the measuring part is connected with the second receiving part, receives the second electric signal and calculates to obtain the inner diameter size of the blood vessel wall; the imaging part is connected with the second receiving part and used for receiving the second electric signal and generating blood vessel wall circumference imaging;
and the display part is connected with the first calculation part, the measurement part and the imaging part and displays the blood flow speed, the inner diameter size of the blood vessel wall and the circumferential imaging of the blood vessel wall in real time. The invention displays the blood flow speed, the inner diameter size of the vessel wall and the circumference imaging of the vessel wall in real time, thereby realizing the accurate monitoring of the heart discharge capacity.
Compared with the prior art, the invention has the beneficial effects that:
according to the ultrasonic probe for monitoring the hemodynamic parameters, the first ultrasonic transducer emits the first sound beam forwards and receives the first echo signal reflected by red blood cells in blood flow, and the blood flow velocity can be calculated according to the first echo signal; meanwhile, the second ultrasonic transducer can emit a second sound beam perpendicular to the tube wall of the tube body and the tube wall of the blood vessel, receive a second echo signal, obtain circumferential imaging of the blood vessel wall and the inner diameter of the blood vessel wall according to the second echo signal, and accurately monitor hemodynamic parameters by combining blood flow velocity, the inner diameter of the blood vessel and the circumferential imaging of the blood vessel wall;
according to the ultrasonic probe for monitoring the hemodynamic parameters, only a catheter needs to be placed in a patient body during monitoring, unnecessary intervention injury to the patient can be avoided, and the workload of a doctor can be reduced;
the ultrasonic probe for monitoring the hemodynamic parameters adopts the curled FPC flexible printed circuit board to form the tube body with a single-layer structure, has better sound transmission performance, and can effectively improve the monitoring accuracy of the ultrasonic probe.
Drawings
FIG. 1 is a schematic structural view of an ultrasound probe for monitoring hemodynamic parameters;
FIG. 2 is a bottom view of an ultrasound probe for monitoring hemodynamic parameters;
FIG. 3 is a schematic structural view of an FPC flexible printed circuit board;
FIG. 4 is an expanded view of the FPC flexible printed circuit board;
FIG. 5 is a schematic diagram of a calculation and control unit;
FIG. 6 is a signal flow diagram of blood flow velocity detection;
FIG. 7 is a signal flow diagram of the imaging detection of the inner diameter of the vessel wall and the circumference of the vessel wall;
in the drawings: 1-a pipe body; 11-a base layer; 12-a conductive layer; 13-a protective layer; 14-a first outlet; 15-a second outlet; 16-a third outlet; 2-a first ultrasound transducer; 21-a first focusing acoustic lens; 22-a first conductive backing; 23-a first signal line; 3-a second ultrasound transducer; 31-a second focusing acoustic lens; 32-a second conductive backing; 33-a second signal line; 4-an acoustic mirror; 5-a drive device; 51-motor coils; 52-a stator; 53-Magnetitum; 54-a cladding layer; 6-a calculation and control unit; 61-a first transmission section; 62-a first receiving section; 63-a first calculation section; 64-a second transmission section; 65-a second receiving part; 66-a measuring section; 67-an imaging section; 68-a display section; 7-ground wire; 8-supporting layer.
Detailed Description
The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
Examples
Fig. 1 to 2 show an embodiment of an ultrasonic probe for monitoring hemodynamic parameters of the present invention, which includes a tube 1, a first ultrasonic transducer 2, a second ultrasonic transducer 3, an acoustic reflector 4, and a driving device 5 for driving the acoustic reflector 4 to rotate, wherein the first ultrasonic transducer 2 is disposed at an end of the tube 1 and emits a first sound beam to the outside of the tube 1, the second ultrasonic transducer 3 is disposed inside the tube 1, the second ultrasonic transducer 3 is disposed opposite to the acoustic reflector 4, the second ultrasonic transducer 3 emits a second sound beam to the acoustic reflector 4, the acoustic reflector 4 is disposed inside the tube 1, the acoustic reflector 4 is connected to the driving device 5, and the second sound beam is reflected by the acoustic reflector 4 to a direction perpendicular to a wall of the tube 1; the tube body is obtained by curling an FPC (flexible printed circuit), the first ultrasonic transducer 2 and the second ultrasonic transducer 3 are electrically connected with the FPC, and the FPC is in signal connection with the calculation and control unit 6.
According to the ultrasonic probe for monitoring the hemodynamic parameters, the first ultrasonic transducer 2 emits the first acoustic beam forward and receives the first echo signal reflected by red blood cells in blood flow, the acoustic signal of the first echo signal is converted into the electrical signal to calculate the blood flow velocity, and the accurate monitoring of the blood flow velocity can be realized; the second ultrasonic transducer 3 emits a second sound beam backwards, the second sound beam is emitted to the sound reflector 4, the sound reflector 4 emits the second sound beam at an angle vertical to the tube wall of the tube body and the tube wall of the blood vessel after being reflected, a second echo signal is reversely transmitted to the second ultrasonic transducer 3 along a path during emission, and the second ultrasonic transducer 3 receives the second echo signal and converts the second echo signal into an electric signal; meanwhile, the driving device 5 drives the acoustic reflector 4 to rotate around the central axis of the tube body 1, and the second sound beam can sweep the vessel wall through a 360-degree rotating ring to obtain vessel wall circumference imaging and the inner diameter size of the vessel wall; the blood flow velocity, the blood vessel inner diameter size and the blood vessel wall circumference imaging are combined, so that accurate hemodynamic parameters can be obtained, and the accurate monitoring of the ultrasonic probe on the hemodynamic is realized; it should be noted that, this embodiment adopts the flexible printed circuit board of the curled FPC to form body 1 of single-layer structure, prints the conducting wire on the flexible printed circuit board of FPC, has reduced the process of arranging the circuit at body 1, need not to set up at body 1 and walks line recess or cavity to avoid the influence of body 1 structure complication to body 1 sound transmission performance and to detecting the influence of accuracy.
As shown in fig. 1, one end of the first ultrasonic transducer 2 is provided with a first focusing acoustic lens 21, and the other end of the first ultrasonic transducer 2 is provided with a first conductive backing 22 arranged to be grounded; the first focusing acoustic lens 21 is arranged for focusing the first acoustic beam, so that the accuracy of monitoring the blood flow velocity is improved, and the first conductive backing 22 plays a role of leading out the ground wire 7. One end of the second ultrasonic transducer 3 is provided with a second focusing acoustic lens 31, the other end of the second ultrasonic transducer 3 is provided with a second conductive backing 32 which is arranged in a grounding mode, the second focusing acoustic lens 31 is arranged for focusing a second beam, the measurement accuracy of the inner diameter size and the circumference imaging of the blood vessel is improved, accurate monitoring of hemodynamics is facilitated, and the second conductive backing 32 plays a role in leading out the ground wire 7. The first focusing acoustic lens 21 and the second focusing acoustic lens 31 can be selected according to the requirement of the application scene on the detection precision. In this embodiment, the end faces of the first conductive backing 22 and the second conductive backing 32 are attached, and the joint of the first conductive backing 22 and the second conductive backing 32 is connected with the ground wire 7, and the ground wire 7 is led out and grounded through the FPC flexible printed circuit board. It should be noted that the positions of the first conductive backing 22 and the second conductive backing 32 are preferred for obtaining a compact ultrasonic probe and simplifying the grounding structure, and are not intended to be restrictive; in the present embodiment, the first conductive backing 22 and the second conductive backing 32 can be made of PZT piezoelectric ceramics, but not limited to this type of piezoelectric materials. In order to ensure the connection stability among the first focusing acoustic lens 21, the first ultrasonic transducer 2, the second focusing acoustic lens 31 and the second ultrasonic transducer 3, in this embodiment, a support layer 8 is sleeved on the periphery of the tube 1 corresponding to the first focusing acoustic lens 21, the first ultrasonic transducer 2, the first conductive backing 22, the second conductive backing 32, the second ultrasonic transducer 3 and the second focusing acoustic lens 31, and the first focusing acoustic lens 21, the first ultrasonic transducer 2, the first conductive backing 22, the second conductive backing 32, the second ultrasonic transducer 3 and the second focusing acoustic lens 31 of this embodiment are coaxially arranged and the common axis coincides with the central axis of the tube 1.
The side of the first ultrasonic transducer 2 is connected with a first signal line 23, the side of the second ultrasonic transducer 3 is connected with a second signal line 33, the tube body 1 is an FPC (flexible printed circuit), the first signal line 23 and the second signal line 33 are electrically connected with the FPC, and the FPC can be in signal connection with the calculation and control unit 6. As shown in fig. 3 to 4, the FPC flexible printed circuit board includes a base layer 11, a conductive layer 12 and a protective layer 13 which are sequentially bonded: the conductive layer 12 includes a first outgoing line 14, a second outgoing line 15, and a third outgoing line 16 that are arranged in parallel, and the first signal line 22, the second signal line 32, and the ground line 7 are electrically connected to the first outgoing line 14, the second outgoing line 15, and the third outgoing line 16, respectively; the base layer 11 and the protective layer 13 are polyimide layers, and a polyimide adhesive layer is arranged at the curling connection position of the FPC flexible printed circuit board. In this embodiment, the first signal line 22, the second signal line 32, and the ground line 7 are respectively led out through the first outgoing line 14, the second outgoing line 15, and the third outgoing line 16 on the FPC flexible printed circuit board, the circuit structure is simple, the stability of signal transmission is good, and the line widths of the first outgoing line 14, the second outgoing line 15, and the third outgoing line 16 are as narrow as possible on the premise of ensuring signal transmission, so as to reduce the scattering of ultrasound to the maximum extent; the stratum basale and protective layer all adopt polyimide PI layer, and it not only can play the guard action to the circuit, has better sound effect moreover, and the stratum basale passes through the PI adhesive bonding with the curling overlap joint department of protective layer to obtain the seamless sound tube that passes through that has better electrical property, improve ultrasonic probe's detection precision. It should be noted that, the selection of the materials of the base layer 11 and the protective layer 13 is not a restrictive provision of the present invention, and any polymer material that can be used as a substrate of an FPC flexible printed circuit board and has a good sound transmission performance can be used in the present invention, but the curling and overlapping portion of the base layer 11 and the protective layer 13 should be preferably bonded by an adhesive having the same chemical composition as the base layer 11 or the protective layer 13 to minimize the attenuation of the ultrasonic sound beam caused by the tube body.
As shown in fig. 1, the driving device 5 of the present embodiment is a micro motor, and includes a motor coil 51, a stator 52 and a magnet 53, wherein the motor coil 51 is wound around the outer periphery of the tube 1, the stator 52 is fixed inside the tube 1, the magnet 53 is disposed inside the tube 1, and the magnet 53 is in contact with the stator 52; specifically, the present embodiment may provide a concave portion on the stator 52 and a convex portion on the bottom of the magnet 53, or provide a convex portion on the stator 52 and a concave portion on the bottom of the magnet 53, and the convex portion and the concave portion cooperate to support and position the magnet by the stator. In this embodiment, the diameter of the magnet 53 is slightly smaller than the inner diameter of the tube body 1 to ensure that the magnet 53 can rotate inside the tube body 1, the lower end surface of the magnet 53 is a flat plane and is supported by the stator 52, the upper end surface of the magnet 53 is an inclined surface, an included angle between the inclined surface and the central axis of the tube body 1 is 45 degrees, the acoustic reflector 4 is fixed on the inclined surface, and it can be ensured that the second sound beam emitted by the second ultrasonic transducer 3 is emitted perpendicular to the tube wall and the blood vessel wall after being reflected by the acoustic reflector; when the motor coil 51 is energized, the magnet 53 is excited to rotate, and the stator 52 provides a supporting point for the magnet 53. Wherein, the acoustic reflector 4 and the inclined plane can adopt fixed connection modes such as bonding, clamping, scarf joint and the like. However, the rotation of the magnet 53 by the micro motor as the driving device 5 is preferable because the catheter used for the interventional therapy has a small diameter, works stably, and has little influence on the surrounding environment during the operation, and is not limited to the above-mentioned requirements; the angle of the inclined plane is set to be 45 degrees, so that the second sound beam can be emitted out just perpendicular to the tube body, and the inclined plane inclination angle can be adjusted according to the actual monitoring requirement when the device is applied. In order to hide the motor coil 51 and prevent the motor coil 51 from being exposed and placed in the human body and then injuring the human body tissue, in this embodiment, a cladding 54 is connected to the outside of the tube body 1, and the motor coil 51 is disposed in a cavity formed between the cladding 54 and the outer wall of the tube body 1.
In addition, the outer wall of the tube 1 and the outer wall of the covering 54 are provided with a biocompatible film layer to protect the tube 1 and to impart biocompatibility to the tube 1. The sheath 54 of the present embodiment is set to have an outer diameter of 0.7mm to 1.7mm in accordance with the size of a catheter for interventional operation which is clinically available, but the outer diameter is not limited thereto, and the outer diameter of the ultrasonic probe may be changed in accordance with the size of the catheter for interventional operation.
In order to improve the accuracy of detection: the first ultrasonic transducers 2 of this embodiment may be arranged into multiple groups, and the multiple groups of first ultrasonic transducers 2 may be regularly arranged in the manners of a ring array, a phased array, a single array element, and the like, but are not limited to the above arrangement manner; the second ultrasonic transducers 3 of this embodiment are multiple groups, and the multiple groups of second ultrasonic transducers 3 are all regularly arranged and correspond to one another, where the multiple groups of second ultrasonic transducers 3 are arranged in a regular arrangement manner such as a ring array, a phased array, and the like, but not limited to the arrangement manner.
Wherein, the multiple groups of first ultrasonic transducers 2, the multiple groups of second ultrasonic transducers 3 and the driving device are all connected to the calculation and control unit 6, as shown in fig. 5, the calculation and control unit 6 includes:
a first transmitting unit 61 connected to the first ultrasonic transducer 2 and transmitting the first excitation signal to the first ultrasonic transducer 2; a first receiving unit 62 connected to the first ultrasonic transducer 2, for receiving the first echo signal detected by the first ultrasonic transducer 2 and converting the first echo signal into a first electrical signal; a first calculator 63 connected to the first receiver 62, for receiving the first electric signal and calculating a blood flow velocity;
a second transmitting unit 64 connected to the second ultrasonic transducer 3 and transmitting the second excitation signal to the second ultrasonic transducer 3; a second receiving unit 65 connected to the second ultrasonic transducer 3, receiving a second echo signal detected by the second ultrasonic transducer 3, and converting the second echo signal into a second electrical signal; a measuring unit 66 connected to the second receiving unit 65, for receiving the second electrical signal and calculating the inner diameter of the blood vessel wall; an imaging section 67 connected to the second receiving section 65, for receiving the second electric signal and generating a blood vessel wall circumference image;
the display unit 68 is connected to the first calculation unit 63, the measurement unit 66, and the imaging unit 67, and displays the blood flow velocity, the inner diameter of the blood vessel wall, and the circumferential image of the blood vessel wall in real time. The invention displays the blood flow speed, the inner diameter size of the vessel wall and the circumference imaging of the vessel wall in real time, thereby realizing the accurate monitoring of the heart discharge capacity.
The working mode of the embodiment is as follows:
as shown in fig. 6, the first transmitting portion 61 transmits a first excitation signal to the first ultrasonic transducer 2 through a first signal line, the first ultrasonic transducer 2 receives the first excitation signal and transmits a first sound beam to the front of the ultrasonic probe in a pulsed ultrasonic doppler manner, the first ultrasonic transducer 2 receives a first echo signal reflected by red blood cells in a blood vessel, the first echo signal is transmitted to the first receiving portion 62 through the first signal line, the first receiving portion 62 converts the first echo signal into a first electric signal and transmits the first electric signal to the first calculating portion 63, and the first calculating portion 63 calculates to obtain a blood flow velocity;
as shown in fig. 7, the second transmitting portion 64 transmits a second excitation signal to the second ultrasonic transducer 3 through a second signal line, the second ultrasonic transducer 3 receives the second excitation signal to emit a second beam in a pulsed ultrasonic doppler manner to the back of the ultrasonic probe, the second beam is reflected by the acoustic reflector to a direction perpendicular to the tube body and the blood vessel wall, a second echo signal returned by the blood vessel wall is transmitted to the second ultrasonic transducer 3 through the acoustic reflector, the second echo signal is transmitted to the second receiving portion 65 through the second signal line, the second receiving portion 65 converts the second echo signal into a second electrical signal and transmits the second electrical signal to the measuring portion 66 and the imaging portion 67, and the inner diameter size of the blood vessel wall and the circumferential imaging of the blood vessel wall are obtained.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. An ultrasonic probe for monitoring hemodynamic parameters is characterized by comprising a tube body (1), a first ultrasonic transducer (2), a second ultrasonic transducer (3), an acoustic reflector (4) and a driving device (5) for driving the acoustic reflector (4) to rotate, the first ultrasonic transducer (2) is arranged at the end part of the tube body (1) and emits a first sound beam to the outside of the tube body (1), the second ultrasonic transducer (3) is arranged inside the tube body (1), the second ultrasonic transducer (3) is arranged opposite to the sound reflecting mirror (4), the second ultrasonic transducer (3) emits a second sound beam to the sound reflecting mirror (4), the acoustic reflector (4) is arranged inside the tube body (1), the acoustic reflector (4) is connected with the driving device (5), the second sound beam is reflected to the direction vertical to the wall of the tube body (1) through the sound reflection mirror (4); the tube body (1) is obtained by curling an FPC (flexible printed circuit), the first ultrasonic transducer (2) and the second ultrasonic transducer (3) are electrically connected with the FPC, and the FPC is in signal connection with the calculation and control unit (1).
2. The ultrasound probe for monitoring hemodynamic parameters of claim 1, wherein said first ultrasound transducer (2) is provided with a first focusing acoustic lens (21) at one end, and a first electrically conductive backing (22) provided to ground at the other end of the first ultrasound transducer (2); one end of the second ultrasonic transducer (3) is provided with a second focusing acoustic lens (31), and the other end of the second ultrasonic transducer (3) is provided with a second conductive backing (32) which is arranged in a grounding mode.
3. The ultrasonic probe for monitoring hemodynamic parameters of claim 2, wherein the end faces of the first conductive backing (22) and the second conductive backing (32) are attached, and a ground wire (7) is connected to the attachment of the first conductive backing (22) and the second conductive backing (32), wherein the ground wire (7) is led out to be grounded through the FPC.
4. The ultrasonic probe for monitoring hemodynamic parameters of claim 3, wherein a first signal line (23) is connected to a side of the first ultrasonic transducer (2), a second signal line (33) is connected to a side of the second ultrasonic transducer (3), and the first signal line (23) and the second signal line (33) are electrically connected to an FPC (flexible printed circuit).
5. The ultrasonic probe for monitoring hemodynamic parameters of claim 4, wherein said FPC flexible printed circuit board comprises a substrate layer (11), a conductive layer (12) and a protective layer (13) glued in sequence: the conducting layer (12) comprises a first outgoing line (14), a second outgoing line (15) and a third outgoing line (16) which are arranged in parallel, and the first signal line (22), the second signal line (32) and the ground wire are respectively and electrically connected with the first outgoing line (14), the second outgoing line (15) and the third outgoing line (16); the base layer (11) and the protective layer (13) are polyimide layers, and a polyimide adhesive layer is arranged at the curling connection position of the FPC flexible printed circuit board.
6. The ultrasound probe for monitoring hemodynamic parameters of any one of claims 1 to 5, wherein the driving device (5) comprises a motor coil (51), a stator (52), and a magnet (53), wherein the motor coil (51) is wound around the circumference of the tube (1), the stator (52) is fixed inside the tube (1), the magnet (53) is disposed inside the tube (1), and the magnet (53) is connected to the stator (52).
7. The ultrasound probe for monitoring hemodynamic parameters of claim 6, wherein a cladding (54) is attached to the outside of the tube (1), and the motor coil (51) is disposed in a cavity formed between the cladding (54) and the outside wall of the tube (1).
8. The ultrasonic probe for monitoring hemodynamic parameters of claim 7, wherein the outer wall of the tube body (1) and the outer wall of the cladding (54) are provided with a biocompatible film layer, and the outer diameter of the cladding (54) is 0.7mm to 1.7 mm.
9. The ultrasound probe for monitoring hemodynamic parameters of claim 1, wherein said first ultrasound transducers (2) are in groups, the groups of first ultrasound transducers (2) being regularly arranged; the second ultrasonic transducers (3) are in multiple groups, and the multiple groups of second ultrasonic transducers (3) are regularly arranged.
10. The ultrasound probe for monitoring hemodynamic parameters of claim 9, wherein sets of said first ultrasound transducer (2), sets of said second ultrasound transducer (3) and driving means (5) are connected to a calculation and control unit (1), said calculation and control unit (1) comprising:
a first transmitting unit (61) connected to the first ultrasonic transducer (2) and transmitting the first excitation signal to the first ultrasonic transducer (2); a first receiving unit (62) connected to the first ultrasonic transducer (2), for receiving a first echo signal detected by the first ultrasonic transducer (2) and converting the first echo signal into a first electrical signal; a first calculation unit (63) connected to the first reception unit (62) and configured to receive the first electric signal and calculate the blood flow velocity;
a second transmitting unit (64) connected to the second ultrasonic transducer (3) and transmitting the second excitation signal to the second ultrasonic transducer (3); a second receiving unit (65) that is connected to the second ultrasonic transducer (3), receives a second echo signal detected by the second ultrasonic transducer (3), and converts the second echo signal into a second electrical signal; a measuring part (66) which is connected with the second receiving part (65) and receives the second electric signal and calculates to obtain the inner diameter size of the blood vessel wall; an imaging unit (67) connected to the second receiving unit (65) and configured to receive the second electrical signal and generate a circumferential image of the blood vessel wall;
and a display unit (68) connected to the first calculation unit (63), the measurement unit (66), and the imaging unit (67) and configured to display the blood flow velocity, the inner diameter of the blood vessel wall, and the circumferential image of the blood vessel wall in real time.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112450972A (en) * | 2020-11-19 | 2021-03-09 | 深圳大学 | Clamp device for imaging test of intravascular ultrasonic probe |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH025936A (en) * | 1988-02-18 | 1990-01-10 | Bjorn A J Angelsen | System for forming and shooting laser pulse tube within artery |
| JPH0492650A (en) * | 1990-08-09 | 1992-03-25 | Toshiba Corp | Ultrasonic diagnostic device |
| JPH0556974A (en) * | 1991-09-04 | 1993-03-09 | Toshiba Corp | Ultrasonic diagnosing device |
| JPH05184574A (en) * | 1992-01-16 | 1993-07-27 | Fujitsu Ltd | Ultrasonic probe |
| US5375602A (en) * | 1990-10-02 | 1994-12-27 | Du-Med, B.V. | Ultrasonic instrument with a micro motor |
| US6162175A (en) * | 1997-09-29 | 2000-12-19 | Acuson Corporation | Multi-array pencil-sized untrasound transducer and method of imaging and manufacture |
| US20060173337A1 (en) * | 2004-12-29 | 2006-08-03 | Chen Yu S | Intravascular ultrasound probing device |
| CN102215756A (en) * | 2008-11-12 | 2011-10-12 | 皇家飞利浦电子股份有限公司 | Acoustical switch and catheter comprising acoustical switch |
| CN104853681A (en) * | 2012-10-12 | 2015-08-19 | 玛芬股份有限公司 | Substantially acoustically transparent and conductive window |
| CN109640832A (en) * | 2016-08-30 | 2019-04-16 | 皇家飞利浦有限公司 | Imaging device with ultrasound transducer array |
| CN110072462A (en) * | 2016-09-16 | 2019-07-30 | 国家医疗保健研究所 | For the method and relevant apparatus to the sample imaging containing blood |
-
2020
- 2020-02-12 CN CN202010089676.8A patent/CN111281428B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH025936A (en) * | 1988-02-18 | 1990-01-10 | Bjorn A J Angelsen | System for forming and shooting laser pulse tube within artery |
| JPH0492650A (en) * | 1990-08-09 | 1992-03-25 | Toshiba Corp | Ultrasonic diagnostic device |
| US5375602A (en) * | 1990-10-02 | 1994-12-27 | Du-Med, B.V. | Ultrasonic instrument with a micro motor |
| JPH0556974A (en) * | 1991-09-04 | 1993-03-09 | Toshiba Corp | Ultrasonic diagnosing device |
| JPH05184574A (en) * | 1992-01-16 | 1993-07-27 | Fujitsu Ltd | Ultrasonic probe |
| US6162175A (en) * | 1997-09-29 | 2000-12-19 | Acuson Corporation | Multi-array pencil-sized untrasound transducer and method of imaging and manufacture |
| US20060173337A1 (en) * | 2004-12-29 | 2006-08-03 | Chen Yu S | Intravascular ultrasound probing device |
| CN102215756A (en) * | 2008-11-12 | 2011-10-12 | 皇家飞利浦电子股份有限公司 | Acoustical switch and catheter comprising acoustical switch |
| CN104853681A (en) * | 2012-10-12 | 2015-08-19 | 玛芬股份有限公司 | Substantially acoustically transparent and conductive window |
| CN109640832A (en) * | 2016-08-30 | 2019-04-16 | 皇家飞利浦有限公司 | Imaging device with ultrasound transducer array |
| CN110072462A (en) * | 2016-09-16 | 2019-07-30 | 国家医疗保健研究所 | For the method and relevant apparatus to the sample imaging containing blood |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112450972A (en) * | 2020-11-19 | 2021-03-09 | 深圳大学 | Clamp device for imaging test of intravascular ultrasonic probe |
| CN112450972B (en) * | 2020-11-19 | 2021-07-27 | 深圳大学 | Clamp device for imaging test of intravascular ultrasonic probe |
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|---|---|
| CN111281428B (en) | 2021-08-06 |
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