CN116250861A - Ultrasonic catheter for intracardiac monitoring - Google Patents

Ultrasonic catheter for intracardiac monitoring Download PDF

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CN116250861A
CN116250861A CN202310332982.3A CN202310332982A CN116250861A CN 116250861 A CN116250861 A CN 116250861A CN 202310332982 A CN202310332982 A CN 202310332982A CN 116250861 A CN116250861 A CN 116250861A
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catheter
monitoring
ultrasonic
air bag
intracardiac
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田军
李政
史宏伟
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Jiangsu Bridge Shuixin Power Technology Co ltd
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Jiangsu Bridge Shuixin Power Technology Co ltd
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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
    • A61B8/065—Measuring blood flow to determine blood output from the heart
    • 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
    • A61B8/4444—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device related to the probe
    • A61B8/445—Details of catheter construction
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/06—Measuring instruments not otherwise provided for
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/06—Measuring instruments not otherwise provided for
    • A61B2090/064—Measuring instruments not otherwise provided for for measuring force, pressure or mechanical tension
    • A61B2090/065—Measuring instruments not otherwise provided for for measuring force, pressure or mechanical tension for measuring contact or contact pressure

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Abstract

The invention discloses an ultrasonic catheter for intracardiac monitoring, which comprises a monitoring catheter and an extravascular handheld part, wherein a cavity pipeline is arranged in the monitoring catheter, the rear end of the cavity pipeline is communicated with an air sac gas injection through pipe in the body of the extravascular handheld part, the front end of the cavity pipeline is communicated with an air sac, the surface of the monitoring catheter is provided with an ultrasonic transducer and a pressure sensor, the pressure sensor is close to the air sac, and the other end of the extravascular handheld part is provided with a signal transmission interface; the invention has novel and small structure, relatively low processing cost and simple use method, can accurately measure hemodynamic parameters in heart cavities such as continuous heart displacement and the like, displays a two-dimensional ultrasonic image of the heart in real time, and is convenient for doctors to clinically treat and take medicines.

Description

Ultrasonic catheter for intracardiac monitoring
Technical Field
The application belongs to the field of intracardiac ultrasonic medical instruments, and particularly relates to an ultrasonic catheter for intracardiac monitoring.
Background
Clinically, the optimal treatment of emergency chest pain patients and critical patients depends on accurate assessment of hemodynamic states, hemodynamic monitoring (Hemodynamic Monitoring) is an indispensable means for operation anesthesia, intensive Care Unit (ICU), operation and rescuing patients, and physiological or pathological changes of organisms are revealed by obtaining hemodynamic related parameter indexes through a traumatic or non-traumatic method, so that the illness state and development process of the patients can be comprehensively and deeply known, diagnosis and prognosis evaluation are facilitated, and hemodynamic related scientific application plays a vital role in various aspects such as determination of clinical treatment direction, selection of treatment method, control of illness state and the like, and can guide clinicians to treat and take medicines.
There are three methods of monitoring cardiac hemodynamics currently in clinical use, esophageal ultrasound, thermodilution and intravascular ultrasound catheter techniques (intravascular ultrasound imaging, IVUS).
The esophageal ultrasonic method has the advantages that the interference of gases in chest walls, ribs and lungs of transthoracic ultrasonic cardiography can be avoided when the heart is observed, the ultrasonic cardiac image is very clear, the external interference and other tissue interference are avoided, and the accuracy of disease diagnosis is facilitated. But has the disadvantages that: (1) to be put into a human body, the patient has considerable discomfort and complications after anesthesia and resuscitation, and if the esophagus and the stomach have ulcers, the examination is not suitable, or the patient with serious arrhythmia can induce the conditions during transesophageal ultrasound, the examination is not suitable. (2) Transesophageal ultrasound can only accomplish hemodynamic monitoring under patient anesthesia, and patient recovery is not continuous and clinically limited. (3) The ultrasonic observation range of the esophagus is limited, and the ultrasonic observation range can only reach a place 4cm away from the center of the main rod of the instrument. (4) Esophageal ultrasound requires manual searching for heart monitoring sites in the esophagus or stomach, learning the technique training period is at least more than 6 months, heart discharge volume cannot be continuously monitored in real time, and manual calculation is partially required.
Thermal dilution is a continuous measurement of pulmonary artery pressure during patient anesthesia by placing a floating catheter intravenously into the venous system, through the right atrium, right ventricle, and finally into the pulmonary artery. And further inflating the catheter tip balloon to float with the blood flow and wedge into the distal pulmonary arterioles to block the blood flow, measuring the pulmonary capillary wedge pressure. Currently conventional floating catheters are capable of measuring a variety of hemodynamic indices: pulmonary Arterial Pressure (PAP), pulmonary capillary wedge pressure (PWP), right Atrial Pressure (RAP), cardiac Output (CO), pulmonary circulatory resistance (PVR), systemic resistance (SVR), stroke Work (SW), left Ventricular Stroke Work (LVSW), right Ventricular Stroke Work (RVSW), cardiac Index (CI), and the like. If necessary, the pulmonary ventilation function can be indirectly known by taking a mixed venous blood sample through a catheter and measuring the venous oxygen partial pressure (PvO). However, while monitoring the above functions, it is also necessary to use external devices such as a pressurized infusion bag, a physiological monitor, a pressure transducer, a flushing device, an additional infusion tower crane and interface, a central venous interface, an air sac opening, a distal opening, a thermistor connection port, a cardiac output measurement interface, a catheter sheath infusion bypass interface, a catheter sheath infusion and tower crane, etc. to assist the device in completing the corresponding data monitoring.
IVUS is used in the heart catheter room, mainly inserted into the heart coronary artery blood vessel, through analyzing the image of IVUS, evaluate the distribution range, severity and composition of pathological changes of coronary atherosclerosis of heart; guiding the implantation position of the coronary heart disease stent and evaluating the effect of the operation, and immediately withdrawing the catheter after the operation is finished, so that continuous measurement cannot be realized.
In view of the foregoing, there is a need in the clinic for a novel and compact device for measuring hemodynamic parameters such as Continuous Cardiac Output (CCO) during the non-operative period, and for a novel intracardiac ultrasound catheter that displays two-dimensional ultrasound images of the heart in real time.
Disclosure of Invention
In order to solve the problems, the invention discloses an ultrasonic catheter for intracardiac monitoring, which is novel and compact in structure, simple in use method, capable of accurately measuring parameters such as continuous cardiac displacement and the like, displaying a two-dimensional ultrasonic image of a heart in real time, and convenient for doctors to clinically treat and take medicines.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
an ultrasonic catheter for intracardiac monitoring, comprising a monitoring catheter and an extravascular handheld portion, characterized in that: the monitoring catheter is internally provided with a cavity pipeline, the rear end of the cavity pipeline is communicated with an air bag air injection through pipe in the main body of the external handheld part of the blood vessel, the front end of the cavity pipeline is communicated with an air bag, and the other end of the external handheld part of the blood vessel is provided with a signal transmission interface; the surface of the monitoring catheter is also provided with a pressure sensor, and the pressure sensor is arranged close to the air bag; the surface of the monitoring catheter is also provided with an ultrasonic transducer, and the distance between the ultrasonic transducer and the air bag is 280-400mm.
Further, the length of the monitoring conduit is 900-1100mm, the diameter of the monitoring conduit is 2.3-2.7mm, and the monitoring conduit is made of high-density polyethylene.
Further, the pressure sensor is 3-5mm from the air bag. The pressure sensor is a universal pressure sensor, when the air bag is filled, the pressure sensor can effectively measure the intravascular pressure of 360 degrees in the blood vessel within the distance, and the interference of the air bag when the air bag is filled is avoided.
Further, the ultrasonic catheter also comprises an ultrasonic probe, the ultrasonic probe comprises a main body packaging tube, ultrasonic transducers, quartz reflectors and a micro gas turbine, the ultrasonic transducers and the micro gas turbine are respectively arranged on two sides inside the main body packaging tube, a power supply circuit of the ultrasonic transducers is arranged along the wall of the main body packaging tube, an air inlet pipe and an air outlet pipe are arranged at the rear end of the micro gas turbine, the quartz reflectors are arranged on an output shaft of the micro gas turbine, and at least one reflecting surface is arranged on the surface of each quartz reflector.
Further, the diameter of the main body packaging tube is 2.3-2.9mm, the length of the main body packaging tube is 3.5-4mm, and the main body packaging tube is made of polycarbonate.
Further, the ultrasonic transducer is a phased array miniature transducer, the diameter of the ultrasonic transducer is 1mm, and the ultrasonic transducer is a 64 x 1, 64 x 2 or 64 x 3 crystal array phased array, and the ultrasonic transducer is led out by 64 coaxial cables and is connected with an external host.
Further, the quartz reflector is a circular wedge body with the diameter of 1mm, the tangent plane forms a 45-degree angle, and the center of the bottom of the quartz reflector is fixed on the output shaft of the micro gas turbine.
The invention also discloses a multi-balloon ultrasonic catheter for intracardiac monitoring, which comprises a monitoring catheter and an extravascular handheld part, and is characterized in that: the monitoring catheter is sequentially provided with a floating guide air bag, a PAOP pressure transducer, a blocking pressure air bag, a Cvp pressure transducer and an ultrasonic transducer from the topmost end of the catheter; the monitoring catheter is internally provided with a cavity pipeline, the cavity pipeline is respectively connected with a blocking pressure air bag injection port and a floating guide air bag injection port on the external vascular hand control part, the cavity pipeline is connected with the blocking pressure air bag and the floating guide air bag at the forefront end of the catheter, and the distance between the ultrasonic transducer and the foretop end of the catheter is 280-400mm.
Further, a temperature sensor is arranged at the foremost end of the monitoring catheter; blocking the pressure balloon 70-100mm from the topmost end of the catheter; PAOP pressure transducer, diameter is 2.3-3mm, distance from the top of the catheter is 50-70mm; a floating guide balloon 20-40mm away from the topmost end of the catheter; the Cvp pressure transducer is disposed proximate to the ultrasound transducer.
The beneficial effects of the invention are as follows:
(1) The ultrasonic catheter for monitoring the heart chamber has the advantages of novel and small structure, simple use method, capability of accurately measuring continuous heart displacement and other parameters, real-time display of a two-dimensional ultrasonic image of the heart, and convenience for clinical treatment and medication of doctors.
(2) The ultrasonic transducer is arranged close to the air sac, at the moment, the ultrasonic transducer is just positioned at the pulmonary valve of the right ventricle, the position is just the center position (unconventional position) of the whole heart chamber, the ultrasonic transducer can display the most complete heart chamber structure at the position by using the minimum ultrasonic energy, and the output quantity of the pulmonary artery can be measured more accurately.
(3) The advantages compared to esophageal ultrasound are as follows:
accurately knowing morphological characteristics of heart chambers and inner walls of pulmonary artery blood vessels by real-time observation;
the heart intracavity ultrasonic monitoring catheter can rapidly observe pulmonary artery and branches thereof in a larger range through ultrasonic imaging because of being in a blood vessel cavity, diagnose pulmonary artery embolism, and simultaneously guide a clinician to rapidly treat and attract and take out thrombus;
the patients in the esophagus ultrasonic awake state can not withstand monitoring, and the heart intracavity ultrasonic monitoring catheter can be suitable for all critical patients and anesthetized patients;
the esophageal ultrasound needs to manually search heart monitoring sites in esophagus or stomach, and learning the training period of the technology is at least more than 6 months, so that the heart blood volume can not be continuously monitored in real time, and part of the ultrasonic ultrasound needs to be manually calculated; the ultrasonic monitoring catheter in the heart cavity can realize continuous and real-time display of the waveform of blood flow Doppler, and measures the heart discharge per minute and the stroke volume.
(4) The advantages over the thermal dilution method are as follows:
the image structure and function of the whole heart are evaluated, and the waveform of blood flow Doppler can be displayed and measured in real time in the Right Ventricular Outflow Tract (RVOT) or the Main Pulmonary Artery (MPA), so that the stroke volume and the heart discharge volume per minute can be measured.
No additional detecting consumable is needed, and the cost is reduced; meanwhile, the monitoring indexes are more abundant, and the data monitored by the pressure transducer and the ultrasonic transducer are functional data.
(5) The advantages over IVUS are as follows:
the device is inserted into a heart right ventricle system (right atrium, right ventricle and pulmonary artery), can be left in a heart cavity for a short term or a long term, has a hemodynamic monitoring function, is suitable for various critical patients, can be widely applied to continuous hemodynamic monitoring and guiding clinicians of critical patients such as operating room anesthesia department, intensive medicine (ICU), cardiology CCU, respiratory department and the like, judges the illness state according to monitoring indexes, and performs individual diagnosis and treatment medication.
(6) The multi-balloon ultrasonic catheter can realize multi-parameter measurement, and has simple structure and convenient operation.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a monitoring catheter according to the present invention.
Fig. 2 is a schematic view of the structure of an extravascular hand-held portion according to the present invention.
Fig. 3 is a use state diagram of the present invention.
Fig. 4 is a schematic view of the structure of the multi-balloon ultrasound catheter of the present invention.
Fig. 5 is a schematic view of the structure of an ultrasonic probe according to the present invention.
List of drawing identifiers:
1. the device comprises a monitoring catheter, 2, an ultrasonic transducer, 3, a pressure sensor, 4, a balloon, 5, a scale, 6, an extravascular handheld part main body, 7, a handheld device, 8, a signal transmission interface, 9, a balloon gas injection through pipe, 10, a cavity pipeline, 11, a control valve, 12 and a pulmonary artery tail end.
3', cvp pressure transducer, 3", PAOP pressure transducer, 4', occlusion pressure balloon, 4", floating guide balloon, 13, temperature sensor, 14, SPO2 fiber.
21. The main body packaging tube 22, the ultrasonic energy generator 23, the quartz reflector 24, the micro gas turbine 25, the air inlet pipe 26 and the air outlet pipe.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Example 1
As shown in the figure, an ultrasonic catheter for intracardiac monitoring according to the present invention comprises two parts: the monitoring catheter 1 and the outer handheld part main body 6 of blood vessel, the inside cavity pipeline that is equipped with of monitoring catheter 1, the inside gasbag gas injection siphunculus of cavity pipeline rear end intercommunication outer handheld part main body 6 of blood vessel, cavity pipeline front end intercommunication gasbag 4, monitoring catheter 1 surface is equipped with ultrasonic transducer 2 and pressure sensor 3, and wherein pressure sensor 3 is close to gasbag 4, the outer handheld part main body 6 other end of blood vessel is equipped with the signal transmission interface.
The monitoring catheter 1 is shown in figure 1, the whole length is 1000mm, the diameter is 2.5mm, and the pipe material is made of high-density polyethylene; the ultrasonic transducer 2 is arranged on the surface of the monitoring catheter and is adhered to the position 320mm away from the top end through an adhesive; the pressure sensor 3 is arranged on the surface of the monitoring catheter, and is required to be placed in the aorta when in use, and is bonded by an adhesive and is 4mm away from the top end of the monitoring catheter 1, so that the pressure value of the tail end of the aorta can be displayed.
The inflatable balloon 4 is arranged at the top end of the monitoring catheter 1, and can be used for injecting CO during the advancing process of the human body 2 The gas is injected into the balloon 4 through the internal cavity line 10 in dashed lines in fig. 1, the balloon having a diameter of 2.3mm in the uninflated state, a diameter of 10-13mm after inflation and a volume of 1.2-1.5ml.
At the end of the monitoring catheter 1, there is a scale 5 as shown in fig. 1 to show the length of the monitoring catheter 1 into the blood vessel of the human body, and a rough step is performed to determine whether it is in place.
The extravascular handheld portion comprises a main body 6 of the handheld portion, a handheld device 7, a signal transmission interface 8 and a balloon inflation tube 9.
The top end of the main body 6 of the hand-held part is connected with the tail end of the monitoring catheter 1, the balloon gas injection through pipe 9 is mostly positioned in the main body 6 of the hand-held part, and one end is connected with the cavity pipeline 10 for injecting medical CO 2 The gas can be released after the catheter reaches the aorta along with blood flow in the heart cavity; the other end extends out of the body 6 of the hand-held part, and the end is provided with a control valve 11 for controlling air intake or air discharge.
The handset 7 in fig. 2 comprises two symmetrically arranged 24mm diameter rings into which the index and middle fingers of the physician can be inserted during operation, facilitating adjustment and fixation of the angle and depth of the catheter in the heart chamber.
In fig. 2, the signal transmission interface 8 is made of round copper electromagnetic wire wrapped by polyurethane nylon wire, and is connected with the ultrasonic transducer 2 and the pressure sensor 3, so that an intracardiac ultrasonic signal and an intra-aortic pressure signal can be transmitted to the external device.
The ultrasonic transducer 2 is a phased array miniature transducer, has the diameter of 1mm, is a 64 x 2 crystal array phased array, is led out by 64 coaxial cables and is connected with an external host.
Compared with the traditional esophagus ultrasonic method, the heat dilution method and the IVUS method, the intracardiac ultrasonic method applying the ultrasonic catheter has the following advantages and differences:
Figure BDA0004155518870000071
Figure BDA0004155518870000081
example 2
Based on the embodiment 1, the whole length of the monitoring catheter 1 is 900mm, the diameter is 2.3mm, and the distance between the ultrasonic transducer 2 and the top end is 280mm;
the pressure sensor 3 is 3mm from the tip of the monitoring catheter 1 and the handpiece 7 comprises two symmetrically arranged rings of diameter 22 mm. The ultrasonic transducer 2 is a 64 x 1 crystal array phased array.
Example 3
Based on the embodiment 1, the whole length of the monitoring catheter 1 is 1100mm, the diameter is 2.7mm, and the distance between the ultrasonic transducer 2 and the top end is 360mm;
the pressure sensor 3 is 5mm from the tip of the monitoring catheter 1 and the handpiece 7 comprises two symmetrically arranged rings of 26mm diameter. The ultrasonic transducer 2 is a 64 x 3 crystal array phased array.
Example 4
FIG. 4 is a schematic view of the structure of the improved multi-balloon ultrasonic catheter of the invention, wherein the length of the monitoring catheter 1 is 110cm, the monitoring catheter is made of high-density polyethylene, and the diameter of the monitoring catheter is 3mm; the ultrasonic transducer 2 is positioned 400mm away from the topmost end of the catheter; the blocking pressure balloon 4' is 100mm from the topmost end of the catheter, the diameter of the balloon in the uninflated state is 2.3-3mm, the diameter after inflation is 1.3-1.5mm, and the volume is 15-1.8ml; the PAOP pressure transducer 3' has a diameter of 3mm and is 70mm from the topmost end of the catheter; the floating guide air bag 4' is 40mm away from the topmost end of the catheter, the diameter of the air bag is 2.3-3mm in an uninflated state, the diameter of the air bag is 10-12mm after inflation, and the volume of the air bag is 1.3-1.5ml; oxygen saturation SPO 2 The sensor conducting optical fiber 14 is placed in the lumen from beginning to end; the temperature sensor 13 is arranged at the topmost end of the catheter; the scale 5 is capable of displaying the depth of the catheter traveling within the human body. The Cvp pressure transducer 3' is disposed proximate to the ultrasound transducer.
When in work, (1) the patient lies quietly and flatly, and the needle is inserted from the position of the subclavian vein close to the tip of the lung; (2) The monitoring catheter is implanted into the human body from the step (1), and the pressure waveform is observed at the moment of the signal transmitted by the PAOP pressure transducer 3' on the catheter, and the monitoring catheter is slowly placed into the catheter. When the catheter is deeply penetrated by 15-20cm through the scale 5 on the catheter, injecting CO into the air bag through the injector at the hand-held end 2 The air floats into the heart chamber along the blood flow, at this time, the ultrasonic transducer 2 transmits signals to external equipment, and a doctor can sequentially see right room, pulmonary artery waveform and ultrasonic two-dimensional images on a screen; (3) The staff gauge 5 on the catheter is observed, meanwhile, a doctor pushes 38-50cm through an ultrasonic two-dimensional image and a pressure waveform displayed by a screen, and after judging that the tail end of the catheter is placed in a pulmonary artery, the ultrasonic transducer 2 and the Cvp pressure transducer 3 'are positioned at the inlet of the aortic valve of the left ventricle, the blocking pressure air bag 4', the PAOP pressure transducer 3', the floating guide air bag 4', the temperature sensor 13 are positioned in the aorta, then the gas in the floating guide air bag 4 'is released, and the signal transmitted by the PAOP pressure transducer 3' is displayed as measured Pulmonary Artery Pressure (PAP) through external equipment. At this time, 1.2-1.5ml CO 2 Gas is injected into the floating guide balloon 4″ through the floating guide balloon injection port of the monitoring catheter 1; the diameter of the air bag is 2.3-3mm in the uninflated state, the diameter is 10-12mm after inflation, and the volume is 1.3-1.5ml; the PAOP pressure transducer 3 "is now located in the aorta and the measured pressure value is the aortic pressure. A regular pressure waveform can now be displayed by the PPAOP pressure transducer 3 "at the front end of the catheter. (4) Regular pressure waveforms transmitted by the PAOP pressure transducer 3 "and through the heart chamber transmitted by the ultrasonic transducer 2 at that timeAnd (3) two-dimensional ultrasonic images, wherein a doctor can judge that the ultrasonic transducer 2 is positioned at the pulmonary artery inlet through the ultrasonic two-dimensional images and the pressure waveforms by releasing gas in the air bag and fine-adjusting the position of the ultrasonic transducer 2, and the distance between the ultrasonic transducer 2 and the top end is 400mm. (5) CO is processed by 2 Gas is injected into the blocking pressure balloon 4' through the Cvp blocking pressure balloon injection port of the monitoring catheter; the diameter of the air bag is 2.3-3mm in the uninflated state, the diameter is 1.3-1.5mm after inflation, and the volume is 1.5-1.8ml; the pressure measured at this time was the Cvp pulmonary artery occlusion pressure. (6) The monitoring catheter 1 is fixed, and the intracardiac ultrasonic signals and the intra-aortic pressure signals are continuously transmitted to the peripheral equipment.
Example 5
Based on the embodiment 4, the length of the monitoring catheter 1 is 90cm, and the monitoring catheter is made of high-density polyethylene material and has a diameter of 2.3mm; the ultrasonic transducer 2 is positioned at a distance of 280mm from the topmost end of the catheter; the blocking pressure balloon 4' is 70mm from the topmost end of the catheter; the PAOP pressure transducer 3 "is 2.3mm in diameter, 50mm from the topmost end of the catheter; the floating guide balloon 4 "is 20mm from the topmost end of the catheter.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims (12)

1. An ultrasonic catheter for intracardiac monitoring, comprising a monitoring catheter and an extravascular handheld portion, characterized in that: the monitoring catheter is internally provided with a cavity pipeline, the rear end of the cavity pipeline is communicated with an air bag air injection through pipe in the main body of the external handheld part of the blood vessel, the front end of the cavity pipeline is communicated with an air bag, and the other end of the external handheld part of the blood vessel is provided with a signal transmission interface; the surface of the monitoring catheter is also provided with a pressure sensor, and the pressure sensor is arranged close to the air bag; the surface of the monitoring catheter is also provided with an ultrasonic transducer, and the distance between the ultrasonic transducer and the topmost end of the catheter is 280-400mm.
2. An ultrasound catheter for intracardiac monitoring according to claim 1, wherein: the length of the monitoring conduit is 900-1100mm, the diameter of the monitoring conduit is 2.3-2.7mm, and the monitoring conduit is made of high-density polyethylene.
3. An ultrasound catheter for intracardiac monitoring according to claim 1, wherein: the pressure sensor is 3-5mm away from the air bag.
4. An ultrasound catheter for intracardiac monitoring according to claim 1, wherein: the middle part of the extravascular handheld part is provided with a handheld device, the handheld device is provided with two circular rings with the diameters of 24+/-2 mm, and the two circular rings are symmetrically arranged around the body of the extravascular handheld part.
5. An ultrasound catheter for intracardiac monitoring according to claim 1, wherein: the surface of the rear end of the monitoring catheter is provided with a scale.
6. An ultrasound catheter for intracardiac monitoring according to claim 1, wherein: the front end of the air bag air injection through pipe is provided with a control valve.
7. An ultrasound catheter for intracardiac monitoring according to claim 1, wherein: the ultrasonic probe comprises a main body packaging tube, an ultrasonic energy generator, a quartz reflecting mirror and a micro gas turbine, wherein the ultrasonic energy generator and the micro gas turbine are respectively arranged on two sides inside the main body packaging tube, a power supply circuit of the ultrasonic energy generator is arranged along the wall of the main body packaging tube, an air inlet pipe and an air outlet pipe are arranged at the rear end of the micro gas turbine, the quartz reflecting mirror is arranged on an output shaft of the micro gas turbine, and at least one reflecting surface is arranged on the surface of the quartz reflecting mirror.
8. An ultrasound catheter for intracardiac monitoring according to claim 1, wherein: the ultrasonic transducer is a phased array miniature transducer, has the diameter of 1mm and is a 64 x 1, 64 x 2 or 64 x 3 crystal array phased array, and is led out by 64 coaxial cables and connected with an external host.
9. An ultrasonic catheter for intracardiac monitoring, comprising a monitoring catheter and an extravascular handheld portion, characterized in that: the monitoring catheter is internally provided with a cavity pipeline, the rear end of the cavity pipeline is communicated with an air bag air injection through pipe in the main body of the external handheld part of the blood vessel, the front end of the cavity pipeline is communicated with an air bag, and the other end of the external handheld part of the blood vessel is provided with a signal transmission interface; the surface of the monitoring catheter is also provided with an ultrasonic transducer, and the distance between the ultrasonic transducer and the topmost end of the catheter is 280-400mm; the ultrasonic transducer is a phased array miniature transducer and further comprises an ultrasonic probe, wherein the ultrasonic probe comprises a main body packaging tube, an ultrasonic energy generator, a quartz reflector and a miniature gas turbine.
10. A multi-balloon ultrasound catheter for intracardiac monitoring, comprising a monitoring catheter and an extravascular hand-held portion, characterized in that: the monitoring catheter is sequentially provided with a floating guide air bag, a PAOP pressure transducer, a blocking pressure air bag, a Cvp pressure transducer and an ultrasonic transducer from the topmost end of the catheter; the monitoring catheter is internally provided with a cavity pipeline, the cavity pipeline is respectively connected with a blocking pressure air bag injection port and a floating guide air bag injection port on the external vascular hand control part, the cavity pipeline is connected with the blocking pressure air bag and the floating guide air bag at the forefront end of the catheter, and the distance between the ultrasonic transducer and the foretop end of the catheter is 280-400mm.
11. A multi-balloon ultrasound catheter for intracardiac monitoring according to claim 10, wherein: the foremost end of the catheter is provided with a temperature sensor, and the blocking pressure air sac is 70-100mm away from the foremost end of the catheter; the diameter of the PAOP pressure transducer is 2.3-3mm, and the distance from the topmost end of the catheter is 50-70mm; the floating guide air sac is 20-40mm away from the topmost end of the catheter; the Cvp pressure transducer is disposed proximate the ultrasound transducer.
12. A multi-balloon ultrasound catheter for intracardiac monitoring according to claim 11, wherein: the length of the monitoring conduit is 900-1100mm, the diameter of the monitoring conduit is 2.3-3mm, and the monitoring conduit is made of high-density polyethylene.
CN202310332982.3A 2023-03-30 2023-03-30 Ultrasonic catheter for intracardiac monitoring Pending CN116250861A (en)

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