High-pressure injection blood vessel state multi-parameter monitor

Abstract

The invention relates to a high-pressure injection blood vessel state multi-parameter monitor which is used for being connected with a high-pressure injector and detecting the state of a patient during high-pressure injection. The folding bracket is connected with the mounting rod; the mounting plate is connected with one end of the folding bracket; the near-infrared monitoring imaging assembly is mounted on the mounting plate and is used for forming a blood vessel distribution profile diagram and a seepage diagram in an injection area of the patient; the three-dimensional seepage mass monitoring component is mounted on the mounting plate and is used for monitoring the seepage state of an injection area of a patient. Compared with the prior art, the method has the advantages of greatly improving the accuracy of high-pressure injection state detection of a patient and the like.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a multi-parameter monitor for high-pressure injection blood vessel status. Background Art

[0002] During the use of medical high-pressure syringes, the data from the pressure sensor at the end of the high-pressure syringe cannot accurately reflect the actual conditions of different examinations and different patients, which may lead to misjudgment or delay of missed needle swelling, resulting in misjudgment and cessation of examination (causing the failure of the entire enhanced examination), and a large amount of missed needle medicine seeping into the subcutaneous tissue space, causing severe swelling or even ulceration, which ultimately causes serious troubles to patients and medical work.

[0003] Iodine contrast agent intravenous extravasation refers to a series of pathological and physiological changes caused by contrast agent extravasation into the peripheral tissues of blood vessels due to various reasons after intravenous injection, and the change of osmotic pressure gradient in the interstitial space, which causes the water in the cells to transfer to the interstitial space. Since iodine contrast agent is administered by peripheral intravenous push injection with a high-pressure syringe, once extravasated, it is highly irritating to the subcutaneous tissue, and the swollen tissue locally compresses the blood vessels and nerves, causing blood circulation disorders and pain. In severe cases, it can cause serious complications such as tissue necrosis, ulcers and fascial compartment syndrome, affecting limb function, increasing patient pain, and affecting the examination effect and diagnosis.

[0004] Contrast agents are increasingly used in conventional enhanced scanning, vascular imaging, and perfusion scanning, as well as CT and MR scanning. When performing enhancement, medical staff usually operate a high-pressure syringe to inject contrast agents in the operating room, which is adjacent to the patient's examination room and separated by radiation-proof lead glass. Nurses or operating technicians can only look at the patient from a distance and cannot know the specific situation of the injection. Usually, they will communicate with the patient in advance and tell the patient to raise his hand or shout if he feels pain. The nurse or operating technician will observe whether the patient raises his hand or shouts pain. When an abnormality is identified, the nurse or operating technician will promptly operate the emergency stop button of the high-pressure syringe to terminate the injection. This requires the nurse or operating technician to pay close attention to observe the patient's abnormality at all times, but when the patient's abnormality is observed, a large amount of extravasation may have occurred. Although the operating interface of the high-pressure syringe also monitors abnormal pressure fluctuations, if an abnormal pressure waveform appears, the operator can also stop the injection in time. However, when the above situation occurs, a large amount of extravasation has already occurred, the consequences are already very serious, and the potential risk of medical accidents is huge. At the same time, common complications of contrast agent injection during CT or MR scans are manifested as local papule-like swelling at the puncture site; in more severe cases, the puncture site is swollen and the forearm is full due to swelling; in severe cases, the swelling can affect the entire upper limb soft tissue. In addition to soft tissue swelling, blisters may appear on the skin and even tissue ulcers and necrosis may occur. How to effectively detect extravasation as early as possible so that the operation can be stopped earlier, control extravasation in the early stage, and control the amount of contrast agent extravasation to a sufficiently small amount is particularly necessary.

[0005] On the other hand, current pressure monitoring is limited to blood vessel pressure detection, whether it is pressure detection at the high-pressure syringe end or the subsequent improvement of the proximal end of the injection site bandage pressure sensor, often due to individual differences (blood vessel thickness and elasticity), injection site differences (such as elbow joints will cause excessive pressure) and the state of the subject (such as muscle tension compressing blood vessels due to tension during injection) The pressure value is abnormally false, and the blood vessels themselves will have pressure changes during high-pressure injections, so only a general "normal pressure range" can be set to balance the real-time pressure changes and individual differences that cause false alarms, or the discovery of exudation too late. This causes the operating medical technicians to stop the examination urgently, resulting in the failure of the entire enhanced examination, repeated examinations that bring more property damage, time waste, and physical pain.

[0006] The above two problems have not been well solved yet. This fundamentally determines that the accuracy of blood vessel status monitoring by improving pressure alone cannot reach a very ideal level. Summary of the invention

[0007] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a high-pressure injection blood vessel status multi-parameter monitor, which greatly improves the accuracy of patient high-pressure injection status detection.

[0008] The purpose of the present invention can be achieved by the following technical solutions:

[0009] A high-pressure injection blood vessel status multi-parameter monitor, which is used to connect with a high-pressure injector and detect the status of a patient during high-pressure injection, and the multi-parameter monitor includes:

[0010] Mounting rod;

[0011] a folding bracket connected to the mounting rod;

[0012] a mounting plate connected to one end of the folding bracket;

[0013] A near infrared monitoring imaging assembly mounted on the mounting plate and used to form a vascular distribution contour map and a permeation map in the injection area of ​​the patient;

[0014] And a three-dimensional monitoring component for exudate mass installed on the installation plate and used for monitoring the exudate status of the patient's injection area.

[0015] Furthermore, the high-pressure injector is a conventional instrument in the art, so it will not be described in detail.

[0016] Furthermore, the mounting rod is a telescopic mounting rod.

[0017] Furthermore, the folding bracket comprises:

[0018] a first connecting rod rotatably connected to the mounting rod;

[0019] a second connecting rod rotatably connected to the first connecting rod;

[0020] The third connecting rod is rotatably connected to the second connecting rod, and the mounting plate is detachably fixedly connected to the third connecting rod. Through the folding bracket, the near-infrared monitoring imaging assembly and the exudate mass stereoscopic monitoring assembly can be telescopically moved to any position without affecting the operation of the CT (computed tomography) machine and the patient's getting in and out of bed.

[0021] Furthermore, the first connecting rod is rotatably connected to the mounting rod via a first rotating shaft;

[0022] The first connecting rod and the second connecting rod are rotatably connected via a second rotating shaft;

[0023] The second connecting rod is rotatably connected to the second connecting rod via a third rotating shaft;

[0024] The first rotating shaft is a damping rotating shaft, or a damping sheet is wrapped on the outside, or a damping spring is arranged on the outside, so that the first connecting rod can be rotated conveniently, and the connection part will not rotate naturally;

[0025] The second rotating shaft is a damping rotating shaft, or a damping sheet is wrapped on the outside, or a damping spring is arranged on the outside, so that the first connecting rod and the second connecting rod can be rotated conveniently, and the connection part will not rotate naturally;

[0026] The third rotating shaft is a damping rotating shaft, or a damping plate is wrapped on the outside, or a damping spring is arranged on the outside, so that the second connecting rod and the third connecting rod can be rotated conveniently, and the connection will not rotate naturally.

[0027] Furthermore, the mounting plate is provided with an interface connected to the third connecting rod.

[0028] Furthermore, a thread for connecting with an MR (magnetic resonance) bed or with a counterweight base is provided at the bottom of the mounting rod.

[0029] Furthermore, the MR bed is provided with a mounting hole for installing the mounting rod, or for being compatible with certain patients who need to hang saline solution.

[0030] Furthermore, the near-infrared monitoring imaging component includes:

[0031] A near-infrared light emitter mounted on the mounting plate and used to illuminate the patient's injection area and reflect near-infrared signals;

[0032] a near-infrared light receiver electrically connected to the near-infrared light transmitter and used to receive a reflected signal from the near-infrared light transmitter;

[0033] A processor electrically connected to the near-infrared light receiver, processing the near-infrared signal received by the near-infrared light receiver and outputting an image;

[0034] and a projector electrically connected to the processor and projecting the output image onto the surface of the injection area of ​​the patient.

[0035] Furthermore, the wavelength of the near-infrared incident light of the near-infrared light emitter is 720-1100 nm, and the commonly used wavelength of the near-infrared incident light is 760 nm, 850 nm or 940 nm, which can better penetrate the surface skin.

[0036] Furthermore, the infrared receiver in the near-infrared monitoring imaging component also includes an infrared filter for filtering out interference from natural light to ensure that the device can operate normally in the presence of natural light.

[0037] Furthermore, the working principle of the near-infrared monitoring imaging component is as follows: the near-infrared light emitter emits near-infrared incident light waves that are harmless to the human body to irradiate the injection area of ​​the patient, and the maximum penetration depth of near-infrared light in human tissue can reach about 10 mm. Its penetration depth is affected by the characteristics of the skin tissue itself, such as the composition of the subcutaneous tissue, water content, pigmentation degree and other factors, and the depth of near-infrared light penetration will also be different. The subcutaneous venous network of our human limbs is usually about 2 to 3 mm deep. At this depth, near-infrared rays can easily penetrate and form a good infrared echo signal. According to the absorption and scattering characteristics of near-infrared light in human tissue. Hemoglobin in the blood (especially reduced hemoglobin), iodine-containing contrast agents for CT, and gadolinium-containing contrast agents for magnetic resonance imaging have higher near-infrared light absorption rates than normal human skin, muscles and other soft tissues. The instrument emits near-infrared light to penetrate the skin. When the infrared light encounters hemoglobin (or contrast agent) in the blood vessels, it will be absorbed more, and the absorption and scattering of light by the surrounding tissues are different from those in the blood vessels. The reflected near-infrared signal is received by the near-infrared light receiver and processed by the processor. The obtained near-infrared signal is directly projected onto the surface of the injection area through a projector, forming an image with obvious light and dark contrast between the blood vessels and other skin areas, so that the situation of the blood vessel network can be displayed clearly in real time. Using this principle, the maximum blood vessel detection display depth can also reach several millimeters. For real-time detection of the injection area of ​​a high-pressure syringe, the detection depth is sufficient to effectively ensure the image quality.

[0038] Furthermore, the exudate mass stereoscopic monitoring component is a binocular structured light camera for monitoring the size of the exudate mass in the patient's injection area, and the binocular structured light camera is installed on one side of the near-infrared monitoring imaging component. When there is extravasation of contrast agent, an exudate mass will appear in the image, and the exudate mass will appear as a black spot in the infrared imaging image, which is different from the color of normal tissue. The binocular structured light camera can accurately identify it, determine its coordinate position, and after transmitting the coordinate signal to the controller, detect its size through the change of coordinate position before and after injection. The appearance of the exudate mass is because when the contrast agent extravasates, the blood vessel wall ruptures, and the ruptured part of the blood vessel wall will absorb more near-infrared light due to the concentration of contrast agent and blood, forming a "black spot".

[0039] Furthermore, the binocular mechanism optical camera has two, which are located on both sides of the near-infrared monitoring imaging component, forming a good three-dimensional depth effect; the near-infrared light transmitter and the near-infrared light receiver are located in the middle position so that the injection area can be vertically irradiated, and the projector is located on one side of the near-infrared light receiver to prevent it from being deformed due to tilted projection. When in use, the near-infrared monitoring imaging component is pulled to about 25 to 30 cm above the injection area through the mounting rod and the folding bracket to ensure the emission, penetration and reflection reception capabilities of the near-infrared ray. The focal length of the projector is also set within the range of 25 to 30 cm, and the projected image will not be out of focus or deformed.

[0040] Furthermore, the mounting plate is provided with a battery slot for placing batteries, and the cover can be opened for replacing batteries.

[0041] Furthermore, the multi-parameter monitor also includes a controller electrically connected to the high-pressure injector, the near-infrared monitoring imaging component, and the exudate mass stereo monitoring component.

[0042] Furthermore, the controller is electrically connected to an alarm, and the alarm 9 is mounted on the mounting plate 4;

[0043] The controller is electrically connected to a pressure detector for detecting the injection pressure of the high-pressure syringe, and the pressure detector is placed on the high-pressure syringe. The pressure sensor has an accurate and sensitive pressure detection function, and can provide the pressure value in the output pipeline of the high-pressure syringe at the current injection in real time. Under normal circumstances, the injection pressure in the high-pressure syringe is 0-1200psi. Depending on the set flow rate and the pressure of the blood vessel state, the injection pressure value of ordinary CT and MR enhanced peripheral veins is generally within 200psi. The value read by the pressure sensor can be displayed in real time to remind the operator.

[0044] Furthermore, the high-pressure injector includes a housing, a syringe, and an infusion tube. The pressure detector is located at one end of the housing close to the syringe, and a connecting tube connected to the pressure detector is installed on one side of the infusion tube.

[0045] Furthermore, the exudate mass stereoscopic monitoring component monitors the diameter of the image projected by the near-infrared monitoring imaging component, and the pressure detector monitors the injection pressure of the high-pressure injector;

[0046] The exudate mass stereoscopic monitoring component monitors the coordinates of the exudate mass in the patient's injection area and transmits a signal to the controller. When the change in the coordinates of the exudate mass △x is less than 0.5 cm, the controller controls the alarm to sound an alarm.

[0047] The three-dimensional monitoring component for exudate mass monitors the coordinates of the exudate mass in the injection area of ​​the patient, and the pressure detector monitors the injection pressure P of the high-pressure syringe, and transmits the signal to the controller. When the change in the coordinates of the exudate mass is 0.5≤△x<1cm and the injection pressure P<150psi, the controller controls the alarm to sound an alarm;

[0048] The exudate mass stereoscopic monitoring component monitors the coordinates of the exudate mass in the patient's injection area, and the pressure detector monitors the injection pressure P of the high-pressure injector, and transmits the signal to the controller. When the change in the coordinates of the exudate mass is 0.5≤△x<1cm, and the injection pressure is 150≤P<250psi, the controller controls the alarm to sound an alarm, and at the same time controls the injection pressure of the high-pressure injector to be less than 100psi, and restores the injection pressure of the high-pressure injector after 2 to 5 seconds;

[0049] The exudate mass stereoscopic monitoring component monitors the coordinates of the exudate mass in the patient's injection area, and the pressure detector monitors the injection pressure P of the high-pressure injector, and transmits the signal to the controller. When the change in the coordinates of the exudate mass is 1≤△x<2cm, the controller controls the alarm to sound an alarm, and at the same time controls the injection pressure P of the high-pressure injector to be less than 100psi, and restores the injection pressure of the high-pressure injector after 2 to 5 seconds;

[0050] The exudate mass stereoscopic monitoring component monitors the coordinates of the exudate mass in the patient's injection area, and the pressure detector monitors the injection pressure P of the high-pressure syringe and transmits the signal to the controller. When the change in the coordinates of the exudate mass △x ≥ 2cm or the injection pressure P ≥ 250psi, the controller controls the alarm to sound an alarm and controls the high-pressure syringe to stop injecting. That is, the injection situation is usually determined jointly by the exudate mass stereoscopic monitoring component and the pressure sensor. However, when the injection pressure is too high, the injection procedure can be ended independently to ensure the safety of personnel and equipment.

[0051] Furthermore, when the injection pressure exceeds 250psi for 2s or more, the controller controls the alarm to sound an alarm and controls the high-pressure injector to stop injecting. When the operator checks that the patient and equipment status are normal, the injection procedure is repeated to ensure patient safety and that the high-pressure injection flow rate can be completed as required. The reasons for excessive injection pressure include vascular extravasation and swelling, the indwelling needle switch not being turned on, and the soft indwelling needle being bent at the butler in the body.

[0052] Furthermore, the controller is a PLC control. Furthermore, the implementation principle of the multi-parameter monitor mainly includes the following aspects:

[0053] Image acquisition and processing: The near-infrared monitoring imaging component is equipped with a corresponding processor, which can collect image data of the monitored area at a certain frame rate and process the collected images, such as performing optimization operations such as noise reduction and contrast enhancement, to improve the image quality and the accuracy of subsequent analysis.

[0054] Exudate mass detection: The near-infrared monitoring imaging component detects the blood vessel distribution and exudate mass, and the exudate mass stereoscopic monitoring component detects the change in the coordinate position of the exudate mass and transmits the signal to the controller to compare the coordinate position before and after injection to obtain the size of the exudate mass, thereby controlling the alarm to sound, the high-pressure injector to reduce the injection pressure or stop the injection.

[0055] Furthermore, the binocular structured light camera adopts deep-sensing stereo recognition technology and has structured light stereo imaging function. Through two sets of image acquisition and detection, image preprocessing and matching and recognition steps, it can make an identification response to the deformation of the monitored part. The change in the coordinates of the exudate mass obtained is the three-dimensional deformation, so that the alarm prompt will be triggered only when the three-dimensional deformation appears in the picture, effectively filtering out false alarms caused by slight tremors of the limbs, light changes, etc.

[0056] Furthermore, the binocular structured light camera uses intelligent video analysis algorithms to detect deformation of objects in the picture. The common method is that the internal chip compares the current frame of the stereoscopic picture with the previous frame of the stereoscopic picture. If the stereoscopic picture changes, the corresponding feedback is triggered.

[0057] Furthermore, the multi-parameter monitor also includes a display light assembly located on the mounting plate, and the display light assembly is located on the side opposite to the near-infrared monitoring imaging assembly and the exudate mass stereoscopic monitoring assembly. The display light assembly includes a power display light, a signal display light, an alarm light, and a power display light. When the size of the exudate mass is detected to be in different intervals, the alarm light displays different colors.

[0058] Furthermore, the multi-parameter monitor also includes a display electrically connected to the high-pressure injector, the near-infrared monitoring imaging component, and the exudate mass stereoscopic monitoring component, providing real-time infrared images of the near-infrared monitoring imaging component and monitoring images of the exudate mass stereoscopic monitoring component, allowing the operator to make intuitive judgments, and when the alarm sounds an alarm, the operator can take corresponding measures in time according to the patient's condition. Furthermore, the multi-parameter monitor also includes a remote monitor electrically connected to the display, and the remote monitor is located in the operating room or other areas, and the multi-parameter monitor is not located in the same room.

[0059] Furthermore, a voice monitoring and call component is also installed on the installation board, which is connected to a remote monitor for remotely monitoring the patient's status.

[0060] Further, the multi-parameter monitor is connected to a recording device by any suitable means known in the art so that the signals measured by each detector are separately recorded and stored, for example, the multi-parameter monitor may be connected to a computer component via an optical fiber cable.

[0061] Furthermore, all components of the multi-parameter monitor are anti-magnetic components and are used in a magnetic resonance room, thereby avoiding artifacts caused by changes in the magnetic field caused by entering and opening the magnetic resonance door.

[0062] Compared with the prior art, the present invention has the following advantages:

[0063] (1) The high-pressure injection vascular status multi-parameter monitor provided by the present invention can achieve real-time intuitive vascular status display, multi-parameter monitoring and analysis, injection conditions detected by the high-pressure syringe, vascular distribution contour map and exudate map detected by the near-infrared monitoring imaging component, and vascular change status and exudate status detected by the exudate mass stereo monitoring component. Through comprehensive analysis of multiple parameters, doctors can make the most accurate judgment based on actual examination requirements and combined with the patient's response (such as pain response sound), greatly improving the accuracy of the patient's high-pressure injection status detection, thereby minimizing false alarms and detecting abnormal swelling of the injection blood vessel more timely and accurately, thereby ensuring patient safety and reducing unnecessary medical accidents.

[0064] (2) The high-pressure injection blood vessel state multi-parameter monitor provided by the present invention is provided with a controller and an alarm, combined with a near-infrared monitoring imaging component, a three-dimensional monitoring component for exudate mass, and a pressure detector, and realizes alarm reminders, reduces injection pressure, reduces flow rate, or stops injection by monitoring the deformation of the blood vessel and the pressure value of the syringe. When the patient encounters extravasation of contrast agent, the high-pressure injector and the operator can respond in time, greatly improving the accuracy of the patient's high-pressure injection state detection, avoiding large amounts of extravasation of contrast agent caused by the operator's untimely response, and reducing the occurrence of medical accidents.

[0065] (3) The near-infrared monitoring imaging assembly of the present invention is compact and is connected to the mounting rod via a foldable bracket. It can be directly inserted into the mounting hole of the MR bed via a thread, or placed on the MR bed or other places via a counterweight base. It is convenient and quick to use and does not substantially increase the workload of the inspection.

[0066] (4) The binocular structured light camera of the present invention has the function of structured light stereo imaging. The change in the coordinates of the exudate mass obtained is the stereo deformation. The alarm prompt will be triggered only when the stereo deformation appears in the picture. It can effectively filter out false alarms caused by slight tremors of limbs, light changes, etc., and improve the alarm accuracy.

[0067] (5) The vascular imaging component of the present invention performs real-time imaging, is radiation-free, is not easily interfered with, and is very intuitive and accurate in dynamic detection.

[0068] (6) The parameter information of the present invention can be transmitted to the remote monitor in the operating room, and the blood vessel status can be remotely and dynamically detected. The operating room can clearly see a variety of data, and medical technicians do not have to run in and out to check the condition of the injection needle, which indirectly improves the inspection work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] Figure 1 It is a structural schematic diagram of the high-pressure injector shown in the present invention;

[0070] Figure 2 It is a structural schematic diagram of the high-pressure injection blood vessel status multi-parameter monitor shown in Example 1;

[0071] Figure 3 It is a schematic diagram of the structure of the near-infrared monitoring imaging component and the exudate mass three-dimensional monitoring component shown in Example 1;

[0072] Figure 4 This is a schematic diagram of the near-infrared monitoring imaging assembly shown in Example 1;

[0073] Figure 5 It is a schematic diagram of the position of the interface of the mounting plate shown in Example 1;

[0074] Figure 6 It is a structural schematic diagram of the mounting rod with a counterweight base shown in Example 1;

[0075] Figure 7 is a side view of the MR bed shown in Example 1;

[0076] Figure 8 is a top view of the MR bed shown in Example 1;

[0077] Fig. 9 This is a schematic diagram of infrared imaging projection of blood vessels and exudate masses in the injection area shown in Example 1, wherein A represents the injection area, B represents blood vessels, and C represents exudate masses;

[0078] Fig.10 It is a structural schematic diagram of the high-pressure injection blood vessel status multi-parameter monitor shown in Example 2;

[0079] Fig.11 is a schematic diagram of the display light assembly shown in Example 2;

[0080] Fig.12 It is a schematic diagram of the high-pressure injection blood vessel status multi-parameter monitor shown in Example 2;

[0081] Fig.13 is a schematic diagram of a battery slot shown in Example 3;

[0082] Fig.14This is a schematic diagram of the high-pressure injection blood vessel status multi-parameter monitor shown in Example 3.

[0083] Description of the markings in the figure:

[0084] 1-high pressure syringe, 11-housing, 12-syringe, 13-infusion tube;

[0085] 2-mounting rod, 21-thread, 22-weight base;

[0086] 3-folding bracket, 31-first connecting rod, 32-second connecting rod, 33-third connecting rod, 34-first rotating shaft, 35-second rotating shaft, 36-third rotating shaft;

[0087] 4-installation plate, 41-battery slot, 42-interface, 43-display light assembly, 431-power display light, 432-signal display light, 433-alarm light, 434-power display light;

[0088] 5-near infrared monitoring imaging component, 51-near infrared light transmitter, 52-near infrared light receiver, 53-processor, 54-projector;

[0089] 6-exudate mass stereo monitoring component, 61-binocular structured light camera;

[0090] 7-MR bed, 71-mounting hole;

[0091] 8-controller, 81-display, 82-remote monitor;

[0092] 9- Siren;

[0093] 10-pressure detector, 101-connecting pipe. DETAILED DESCRIPTION

[0094] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments are implemented based on the technical solution of the present invention, and detailed implementation methods and specific operation processes are given, but the protection scope of the present invention is not limited to the following embodiments. In the following embodiments or embodiments, if there is no special description of the functional components or structures, it means that they are all conventional components or conventional structures used in the art to achieve the corresponding functions.

[0095] It should be noted that in the description of the present invention, the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0096] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0097] A high-pressure injection blood vessel status multi-parameter monitor, which is used to connect with a high-pressure injector 1 and detect the status of a patient during high-pressure injection, and the multi-parameter monitor includes:

[0098] Mounting rod 2;

[0099] A folding bracket 3 connected to the mounting rod 2;

[0100] A mounting plate 4 connected to one end of the folding bracket 3;

[0101] A near-infrared monitoring imaging component 5 mounted on the mounting plate 4 and used to form a blood vessel distribution contour map and a permeation map in the injection area of ​​the patient;

[0102] And a three-dimensional monitoring component 6 for exudate mass is installed on the installation plate 4 and is used to monitor the exudate status of the patient's injection area.

[0103] In some specific embodiments, the high-pressure injector 1 is a conventional instrument in the art, so it will not be described in detail.

[0104] In some specific embodiments, the mounting rod 2 is a telescopic mounting rod.

[0105] In some specific embodiments, the folding bracket 3 includes:

[0106] A first connecting rod 31 rotatably connected to the mounting rod 2;

[0107] A second connecting rod 32 rotatably connected to the first connecting rod 31;

[0108] The third connecting rod 33 is rotatably connected to the second connecting rod 32, and the mounting plate 4 is detachably fixedly connected to the third connecting rod 33.

[0109] In some specific embodiments, the first connecting rod 32 is rotatably connected to the mounting rod 2 via a first rotating shaft 34;

[0110] The first connecting rod 31 and the second connecting rod 32 are rotatably connected via a second rotating shaft 35;

[0111] The second connecting rod 32 is rotatably connected to the second connecting rod 33 via a third rotating shaft 36;

[0112] The first rotating shaft 34 is a damping rotating shaft, or a damping sheet is wrapped on the outside, or a damping spring is arranged on the outside, so that the first connecting rod can be rotated conveniently, and the connection part will not rotate naturally;

[0113] The second rotating shaft 35 is a damping rotating shaft, or a damping sheet is wrapped on the outside, or a damping spring is arranged on the outside, which can easily rotate the first connecting rod 31 and the second connecting rod 32, and the connection will not rotate naturally;

[0114] The third rotating shaft 36 is a damping rotating shaft, or a damping plate is wrapped on the outside, or a damping spring is arranged on the outside, which can easily rotate the second connecting rod 32 and the third connecting rod 33, and the connection will not rotate naturally.

[0115] In some specific embodiments, a thread 21 for connecting with the MR bed 7 or with the counterweight base 22 is provided at the bottom of the mounting rod 2 .

[0116] In some specific implementations, an interface 42 connected to the third connecting rod 33 is provided on the mounting plate 4 .

[0117] In some specific implementations, a mounting hole 71 is provided on the MR bed 7 .

[0118] In some specific embodiments, the near-infrared monitoring imaging component 5 includes:

[0119] A near-infrared light emitter 51 mounted on the mounting plate 4 and used for irradiating the injection area of ​​the patient and reflecting near-infrared signals;

[0120] a near-infrared light receiver 52 electrically connected to the near-infrared light transmitter 51 and used to receive a reflected signal from the near-infrared light transmitter 51;

[0121] A processor 53 electrically connected to the near-infrared light receiver 52, and configured to process the near-infrared signal received by the near-infrared light receiver 52 and output an image;

[0122] And a projector 54 electrically connected to the processor 53 and projecting the output image onto the surface of the injection area of ​​the patient.

[0123] In some specific embodiments, the wavelength of the near-infrared incident light of the near-infrared light emitter 51 is 720-1100 nm, and the commonly used wavelength of the near-infrared incident light is 760 nm, 850 nm or 940 nm, which can better penetrate the surface skin.

[0124] In some specific embodiments, the near-infrared monitoring imaging component 5 also includes an infrared filter for filtering out interference from natural light to ensure that the device can operate normally in the presence of natural light.

[0125] In some specific embodiments, the working principle of the near-infrared monitoring imaging component 5 is as follows: the near-infrared light emitter 51 emits near-infrared incident light waves that are harmless to the human body to irradiate the patient's injection area, and the depth can reach about 2 to 3 mm subcutaneously and form a good infrared echo signal. The superficial venous network of the human body is often the preferred puncture injection site during high-pressure injection, in which the hemoglobin of the blood can absorb near-infrared light. When the near-infrared light emitter 51 is running and irradiating above the skin, the reflected near-infrared signal is received by the near-infrared light receiver 52 because the color of the blood vessels, the extravasated contrast agent (if there is extravasation) and the signal returned by the surrounding tissue are obviously different. After being processed by the processor 53, the obtained near-infrared signal is directly projected to the surface of the injection area through the projector 54, forming an image with obvious light and dark contrast between the blood vessels and other skin areas, so that the situation of the blood vessel network can be displayed in real time and clearly.

[0126] In some specific embodiments, contrast agents include iodine-containing contrast agents for CT and gadolinium-containing contrast agents for magnetic resonance imaging, which absorb near-infrared light more than normal human tissues, thereby forming a significant contrast. Using this principle, the maximum blood vessel detection display depth can also reach several millimeters. For real-time detection of the injection area of ​​a high-pressure syringe, the detection depth is sufficient to effectively ensure image quality.

[0127] In some specific embodiments, the exudate mass stereo monitoring component 6 is a binocular structured light camera 61 for monitoring the size of the exudate mass in the patient's injection area, and the binocular structured light camera 61 is installed on one side of the near-infrared monitoring imaging component 5. When there is extravasation of contrast agent, an exudate mass will appear in the image, and the exudate mass is displayed as an "infrared low signal black spot" in the infrared image, which is different from the color of normal tissue. The binocular structured light camera 61 can accurately identify it, determine its coordinate position, and after transmitting the coordinate signal to the controller, detect its size by the change of the coordinate position before and after the injection. The appearance of the exudate mass is because when the contrast agent extravasates, the blood vessel wall ruptures, and a mass with exudate accumulation will form at the rupture of the blood vessel wall.

[0128] In some specific embodiments, there are two binocular optical cameras 61, which are located on both sides of the near-infrared monitoring imaging component 5 to form a good three-dimensional depth effect; the near-infrared light emitter 51 and the near-infrared light receiver 52 are located in the middle position so that the injection area can be vertically irradiated, and the projector 54 is located on one side of the near-infrared light receiver 52 to prevent it from being deformed due to tilted projection. When in use, the near-infrared monitoring imaging component 5 is pulled to about 25 to 30 cm above the injection area through the mounting rod 2 and the folding bracket 3 to ensure the emission, penetration and reflection receiving capabilities of the near-infrared ray. The focal length of the projector 54 is also set within the range of 25 to 30 cm, and the projected image will not be out of focus or deformed.

[0129] In some specific embodiments, the binocular structured light camera 61 adopts deep-sensing stereo recognition technology and has a structured light stereo imaging function. It makes an identification response to the deformation of the monitored part through two sets of image acquisition and detection, image preprocessing and matching and recognition steps. The change in the coordinates of the exudate mass obtained is the stereo deformation, so that the alarm prompt is triggered only when the stereo deformation appears in the picture, effectively filtering out false alarms caused by slight tremors of the limbs, light changes, etc.

[0130] In some specific implementations, the binocular structured light camera 61 uses an intelligent video analysis algorithm to detect deformation of objects in the image. A common method is that the chip inside the camera compares the current frame of the stereoscopic image with the previous frame of the stereoscopic image, and triggers corresponding feedback if the stereoscopic image changes.

[0131] In some specific embodiments, the mounting plate 4 is provided with a battery slot 41 for placing batteries, and the cover can be opened for replacing batteries.

[0132] In some specific embodiments, the multi-parameter monitor further includes a controller 8 electrically connected to the high-pressure injector 1 , the near-infrared monitoring imaging component 5 , and the exudate mass stereoscopic monitoring component 6 .

[0133] In some specific embodiments, the controller 8 is electrically connected to an alarm 9, and the alarm 9 is mounted on the mounting plate 4;

[0134] The controller 8 is electrically connected to a pressure detector 10 for detecting the injection pressure of the high-pressure injector 1. The high-pressure injector 1 includes a housing 11, a syringe 12, and an infusion tube 13. The pressure detector 10 is located at one end of the housing 11 close to the syringe 12, and a connecting tube 101 connected to the pressure detector 10 is installed on one side of the infusion tube 13.

[0135] In some specific embodiments, the exudate mass stereoscopic monitoring component 6 monitors the diameter of the image projected by the near-infrared monitoring imaging component 5, and the pressure detector 10 monitors the injection pressure of the high-pressure injector 1;

[0136] The exudate mass stereoscopic monitoring component 6 monitors the coordinates of the exudate mass in the patient's injection area and transmits a signal to the controller 8. When the change in the coordinates of the exudate mass △x < 0.5 cm, the controller 8 controls the alarm 9 to sound an alarm.

[0137] The three-dimensional monitoring component 6 for exudate mass monitors the coordinates of the exudate mass in the injection area of ​​the patient, and the pressure detector 10 monitors the injection pressure P of the high-pressure injector 1, and transmits the signal to the controller 8. When the change in the coordinates of the exudate mass is 0.5≤△x<1cm and the injection pressure P<150psi, the controller 8 controls the alarm 9 to sound an alarm;

[0138] The exudate mass stereoscopic monitoring component 6 monitors the coordinates of the exudate mass in the patient's injection area, and the pressure detector 10 monitors the injection pressure P of the high-pressure injector 1, and transmits the signal to the controller 8. When the change in the coordinates of the exudate mass is 0.5≤△x<1cm, and the injection pressure is 150≤P<250psi, the controller 8 controls the alarm 9 to sound an alarm, and at the same time controls the injection pressure of the high-pressure injector 1 to be less than 100psi, and restores the injection pressure of the high-pressure injector 1 after 2 to 5 seconds;

[0139] The exudate mass stereoscopic monitoring component 6 monitors the coordinates of the exudate mass in the patient's injection area, and the pressure detector 10 monitors the injection pressure P of the high-pressure injector 1, and transmits the signal to the controller 8. When the change in the coordinates of the exudate mass 1≤△x<2cm, the controller 8 controls the alarm 9 to sound an alarm, and at the same time controls the injection pressure P of the high-pressure injector 1 to be less than 100psi, and the injection flow rate is reduced, and the injection pressure of the high-pressure injector 1 is restored after 2 to 5 seconds;

[0140] The exudate mass stereoscopic monitoring component 6 monitors the coordinates of the exudate mass in the patient's injection area, and the pressure detector 10 monitors the injection pressure P of the high-pressure injector 1, and transmits the signal to the controller 8. When the change △x of the coordinates of the exudate mass ≥ 2cm or the injection pressure P ≥ 250psi, the controller 8 controls the alarm 9 to sound an alarm and controls the high-pressure injector 1 to stop injection.

[0141] In some specific implementations, the controller 8 is PLC controlled.

[0142] In some specific embodiments, the multi-parameter monitor also includes a display light assembly 43 located on the mounting plate 4, and the display light assembly 43 is located on the opposite side of the near-infrared monitoring imaging assembly 5 and the exudate mass stereoscopic monitoring assembly 6. The display light assembly 43 includes a power display light 431, a signal display light 432, an alarm light 433, and a power display light 434. When the size of the exudate mass is detected to be in different intervals, the alarm light 433 displays different colors.

[0143] In some specific embodiments, the multi-parameter monitor also includes a display 81 electrically connected to the high-pressure injector 1, the near-infrared monitoring imaging component 5, and the exudate mass stereoscopic monitoring component 6, providing real-time infrared imaging images of the near-infrared monitoring imaging component 5 and monitoring images of the exudate mass stereoscopic monitoring component 6, allowing the operator to make intuitive judgments, and when the alarm 9 sounds an alarm, corresponding measures can be taken in time according to the patient's condition.

[0144] In some specific embodiments, the multi-parameter monitor further includes a remote monitor 82 electrically connected to the display 81 .

[0145] In some specific implementations, a voice monitoring and call component is also installed on the installation plate 4, which is connected to the remote monitor 82 for remotely monitoring the patient's status.

[0146] In some specific embodiments, the multi-parameter monitor is connected to a recording device by any suitable means known in the art so that the signals measured by each detector are separately recorded and stored, for example, the multi-parameter monitor can be connected to a computer component via a fiber optic cable.

[0147] In some specific embodiments, all components of the multi-parameter monitor are anti-magnetic components and are used in a magnetic resonance room, thereby avoiding artifacts caused by changes in the magnetic field caused by entering and opening the magnetic resonance door.

[0148] Example 1

[0149] like Figures 1 to 4 As shown, a high-pressure injection blood vessel status multi-parameter monitor is used to connect with a high-pressure injector 1 and detect the status of the patient during high-pressure injection. The multi-parameter monitor includes:

[0150] Mounting rod 2;

[0151] A folding bracket 3 connected to the mounting rod 2;

[0152] A mounting plate 4 connected to one end of the folding bracket 3;

[0153] A near-infrared monitoring imaging component 5 mounted on the mounting plate 4 and used to form a blood vessel distribution contour map and a permeation map in the injection area of ​​the patient;

[0154] And a three-dimensional monitoring component 6 for exudate mass is installed on the installation plate 4 and is used to monitor the exudate status of the patient's injection area.

[0155] In this embodiment, the high-pressure injector 1 is a conventional instrument in the art, so it will not be described in detail.

[0156] In this embodiment, the mounting rod 2 is a telescopic mounting rod.

[0157] In this embodiment, the folding bracket 3 includes:

[0158] A first connecting rod 31 rotatably connected to the mounting rod 2;

[0159] A second connecting rod 32 rotatably connected to the first connecting rod 31;

[0160] The third connecting rod 33 is rotatably connected to the second connecting rod 32, and the mounting plate 4 is detachably fixedly connected to the third connecting rod 33.

[0161] In this embodiment, the first connecting rod 32 is rotatably connected to the mounting rod 2 via a first rotating shaft 34;

[0162] The first connecting rod 31 and the second connecting rod 32 are rotatably connected via a second rotating shaft 35;

[0163] The second connecting rod 32 is rotatably connected to the second connecting rod 33 via a third rotating shaft 36;

[0164] The first rotating shaft 34 is a damping rotating shaft, or a damping sheet is wrapped on the outside, or a damping spring is arranged on the outside, so that the first connecting rod can be rotated conveniently, and the connection part will not rotate naturally;

[0165] The second rotating shaft 35 is a damping rotating shaft, or a damping sheet is wrapped on the outside, or a damping spring is arranged on the outside, which can easily rotate the first connecting rod 31 and the second connecting rod 32, and the connection will not rotate naturally;

[0166] The third rotating shaft 36 is a damping rotating shaft, or a damping plate is wrapped on the outside, or a damping spring is arranged on the outside, which can easily rotate the second connecting rod 32 and the third connecting rod 33, and the connection will not rotate naturally.

[0167] In this embodiment, if Figure 5 As shown, the mounting plate 4 is provided with an interface 42 connected to the third connecting rod 33 .

[0168] In this embodiment, if Figure 1 , 6 As shown in Figures 8 to 9, the bottom of the mounting rod 2 is provided with a thread 21 for connecting with the MR bed 7 or with a counterweight base 22. The MR bed 7 is provided with a mounting hole 71.

[0169] In this embodiment, if Figure 3 and 4 As shown, the near-infrared monitoring imaging component 5 includes:

[0170] A near-infrared light emitter 51 mounted on the mounting plate 4 and used for irradiating the injection area of ​​the patient and reflecting near-infrared signals;

[0171] a near-infrared light receiver 52 electrically connected to the near-infrared light transmitter 51 and used to receive a reflected signal from the near-infrared light transmitter 51;

[0172] A processor 53 electrically connected to the near-infrared light receiver 52, and configured to process the near-infrared signal received by the near-infrared light receiver 52 and output an image;

[0173] And a projector 54 electrically connected to the processor 53 and projecting the output image onto the surface of the injection area of ​​the patient.

[0174] In this embodiment, the wavelength of the near-infrared incident light of the near-infrared light emitter 51 is 720-1100 nm. The commonly used wavelength of the near-infrared incident light is 760 nm, 850 nm or 940 nm. In this embodiment, 850 nm is used, which can better penetrate the surface skin.

[0175] In this embodiment, the infrared receiving component 52 in the near-infrared monitoring imaging component 5 also includes an infrared filter for filtering out interference from natural light to ensure that the device can operate normally under the presence of natural light.

[0176] In this embodiment, the working principle of the near-infrared monitoring imaging component 5 is as follows: the near-infrared light emitter 51 emits near-infrared incident light waves that are harmless to the human body to irradiate the patient's injection area, and the depth can reach about 2 to 3 mm below the skin and form a good infrared echo signal. The superficial venous network of the human body is often the preferred location for intravenous injection, where the hemoglobin of the blood can absorb near-infrared light. When the near-infrared light emitter 51 is running above the skin, the reflected near-infrared signal is received by the near-infrared light receiver 52 because the color of the blood vessels, the extravasated contrast agent (if there is extravasation) and the signal returned by the surrounding tissue are obviously different. After being processed by the processor 53, the obtained near-infrared signal image is directly projected onto the surface of the injection area through the projector 54, forming an image with obvious light and dark contrast between the blood vessels and other skin areas, so that the situation of the vascular network can be displayed in real time and clearly.

[0177] In this embodiment, the contrast agent includes an iodine-containing contrast agent for CT and a gadolinium-containing contrast agent for magnetic resonance imaging, which absorbs near-infrared light more than normal human tissue, thereby forming a clear contrast. Using this principle, the maximum blood vessel detection display depth can also reach several millimeters. For real-time detection of the injection area of ​​a high-pressure syringe, the detection depth is sufficient to effectively ensure image quality.

[0178] In this embodiment, if Fig. 9 As shown, the exudate mass stereoscopic monitoring component 6 is a binocular structured light camera 61 for monitoring the size of the exudate mass in the patient's injection area, and the binocular structured light camera 61 is installed on one side of the near-infrared monitoring imaging component 5. When there is extravasation of contrast agent, an exudate mass will appear in the image, and the exudate mass will be displayed as an "infrared low signal black spot" (hereinafter referred to as a black spot) in the infrared imaging image, which is obviously different from the contour of the blood vessel. The binocular structured light camera 61 can accurately identify it and detect its size. The operator uses the near-infrared image, stereoscopic structure image and the exudate mass stereoscopic monitoring component 6 on the monitor to monitor the exudate results, combined with the patient's status and reaction, to give the most accurate judgment, greatly improving the accuracy of the patient's high-pressure injection status detection, thereby minimizing false alarms and misreporting, and more timely and accurately discovering abnormal swelling of the injection blood vessel, thereby ensuring patient safety and reducing unnecessary medical accidents.

[0179] In this embodiment, there are two binocular optical cameras 61, which are located on both sides of the near-infrared monitoring imaging component 5, forming a good three-dimensional depth effect; the near-infrared light transmitter 51 and the near-infrared light receiver 52 are located in the middle position so that the injection area can be vertically irradiated, and the projector 54 is located on one side of the near-infrared light receiver 52 to prevent it from being deformed due to tilted projection. When in use, the near-infrared monitoring imaging component 5 is pulled to about 30 cm above the injection area through the mounting rod 2 and the folding bracket 3 to ensure the emission, penetration and reflection receiving capabilities of the near-infrared ray. The focal length of the projector 54 is also set within 30 cm, and the projected image will not be out of focus or deformed.

[0180] In this embodiment, the binocular structured light camera 61 adopts deep-sensing stereo recognition technology and has structured light stereo imaging function. Through two sets of image acquisition and detection, image preprocessing, matching and recognition steps, it makes an identification response to the deformation of the monitored part. The change in the coordinates of the exudate mass obtained is the stereo deformation, so that the alarm prompt will be triggered only when the stereo deformation appears in the picture, effectively filtering out false alarms caused by slight tremor of the limbs, light changes, etc. The binocular structured light camera 61 adopts an intelligent video analysis algorithm to detect the deformation of objects in the picture. A common way is that the chip inside it compares the current frame stereo picture with the previous frame stereo picture. If the stereo picture changes, the corresponding feedback is triggered. The deep-sensing stereo recognition technology is a conventional technology in this field. The binocular structured light camera 61 of this embodiment adopts Hikvision's RGB-D intelligent stereo camera MV-DB300S, which adopts active binocular stereo imaging technology, combines a color camera to output high frame rate RGB-D images, and has a built-in deep learning algorithm, which is suitable for volume measurement, robot grasping and other applications. The high-performance sensor is paired with an energy-efficient laser module to stably and efficiently output millimeter-level precision depth maps. The scanning frame rate can reach up to 17fps, which can quickly and accurately measure objects.

[0181] Example 2

[0182] like Fig.10 As shown, based on the embodiment 1, this embodiment further comprises a controller 8 electrically connected to the high-pressure injector 1, the near-infrared monitoring imaging assembly 5, and the exudate mass stereoscopic monitoring assembly 6. The controller 8 is electrically connected to an alarm 9, and the alarm 9 is mounted on the mounting plate 4;

[0183] The controller 8 is electrically connected to a pressure detector 10 for detecting the injection pressure of the high-pressure injector 1. The high-pressure injector 1 includes a housing 11, a syringe 12, and an infusion tube 13. The pressure detector 10 is located at one end of the housing 11 close to the syringe 12, and a connecting tube 101 connected to the pressure detector 10 is installed on one side of the infusion tube 13.

[0184] In this embodiment, the controller 8 is PLC controlled.

[0185] In this embodiment, the pressure detector 10 is any pressure sensor that can be realized in the art.

[0186] In this embodiment, if Fig.11The multi-parameter monitor also includes a display light assembly 43 located on the mounting plate 4. The display light assembly 43 is located on the side opposite to the near-infrared monitoring imaging assembly 5 and the exudate mass stereoscopic monitoring assembly 6. The display light assembly 43 includes a power display light 431, a signal display light 432, an alarm light 433, and a power display light 434. When the size of the exudate mass is detected to be in different intervals, the alarm light 433 displays different colors.

[0187] In this embodiment, the multi-parameter monitor also includes a display 81 electrically connected to the high-pressure injector 1, the near-infrared monitoring imaging component 5, and the exudate mass stereoscopic monitoring component 6, providing real-time infrared imaging images of the near-infrared monitoring imaging component 5 and monitoring images of the exudate mass stereoscopic monitoring component 6, allowing the operator to make intuitive judgments, and when the alarm 9 sounds an alarm, corresponding measures can be taken in time according to the patient's condition.

[0188] like Fig.12 As shown, the exudate mass stereo monitoring component 6 can monitor the diameter of the image projected by the infrared image projector 54 in the near-infrared monitoring imaging component 5 in addition to the stereoscopic detection, and the pressure detector 10 monitors the injection pressure of the high-pressure injector 1;

[0189] The exudate mass stereoscopic monitoring component 6 monitors the coordinates of the exudate mass in the injection area of ​​the patient, and transmits a signal to the controller 8. When the change in the coordinates of the exudate mass △x is less than 0.5 cm, the controller 8 controls the alarm 9 to sound an alarm, which may be a beeping sound, and the alarm light 433 lights up to remind the operator to pay attention, and the alarm is displayed on the display 81;

[0190] The exudate mass stereoscopic monitoring component 6 monitors the coordinates of the exudate mass in the patient's injection area, and the pressure detector 10 monitors the injection pressure P of the high-pressure injector 1, and transmits the signal to the controller 8. When the change in the coordinates of the exudate mass is 0.5≤△x<1cm, and the injection pressure P<150psi, the controller 8 controls the alarm 9 to sound an alarm, which may be a beeping sound, and the alarm light 433 lights up to remind the operator to pay attention, and the alarm is displayed on the display 81;

[0191] The exudate mass stereo monitoring component 6 monitors the coordinates of the exudate mass in the patient's injection area, and the pressure detector 10 monitors the injection pressure P of the high-pressure injector 1, and transmits the signal to the controller 8. When the change in the coordinates of the exudate mass is 0.5≤△x<1cm and the injection pressure is 150≤P<250psi, the controller 8 controls the alarm 9 to sound an alarm, which may be a beeping sound, and the alarm light 433 lights up to remind the operator to pay attention, and the alarm is displayed on the display 81; at the same time, the injection pressure of the high-pressure injector 1 is controlled to be less than 100psi, and the injection pressure of the high-pressure injector 1 is restored after 2s. At this time, the operator pays close attention to the situation at the injection site. When it returns to normal and there is no further change, the operator does not need to operate. If exudate still seeps out when the injection pressure is restored, the operator operates to control the injection pressure to decrease;

[0192] The exudate mass stereo monitoring component 6 monitors the coordinates of the exudate mass in the patient's injection area, and the pressure detector 10 monitors the injection pressure P of the high-pressure injector 1, and transmits the signal to the controller 8. When the change in the coordinates of the exudate mass 1≤△x<2cm, the controller 8 controls the alarm 9 to sound an alarm, which may be a beeping sound, and the alarm light 433 lights up to remind the operator to pay attention, and the alarm is displayed on the display 81; at the same time, the injection pressure P of the high-pressure injector 1 is controlled to be less than 100psi, and the injection pressure of the high-pressure injector 1 is restored after 2s. At this time, the operator pays close attention to the situation at the injection site. When it returns to normal and there is no further change, the operator does not need to perform any operation. Operation, if there is still exudate seeping out when the injection pressure is restored, the operator operates to control the injection pressure to decrease; the exudate mass stereoscopic monitoring component 6 monitors the coordinates of the exudate mass in the patient's injection area, and the pressure detector 10 monitors the injection pressure P of the high-pressure injector 1, and transmits the signal to the controller 8. When the change in the coordinates of the exudate mass △x ≥ 2cm or the injection pressure P ≥ 250psi, the controller 8 controls the alarm 9 to sound an alarm, which can be a beeping sound, and the alarm light 433 lights up to remind the operator to pay attention, and it is displayed on the display 81; at the same time, the high-pressure injector 1 is controlled to stop the injection, and the operator operates according to the patient's condition.

[0193] Example 3

[0194] This embodiment is based on embodiment 2. Fig.13 As shown, a battery slot 41 for placing batteries is provided on the mounting plate 4, and the cover can be opened for replacing batteries.

[0195] In this embodiment, the multi-parameter monitor further includes a remote monitor 82 electrically connected to the display 81. Fig.14As shown, the near-infrared light emitter 51 emits near-infrared incident light waves that are harmless to the human body to irradiate the patient's injection area. The reflected near-infrared signal is received by the near-infrared light receiver 52 and processed by the processor 53. The obtained near-infrared imaging image is directly projected onto the surface of the injection area by the projector 54, forming an image with obvious light and dark contrast between the blood vessels and other skin areas, so that the situation of the vascular network can be displayed in real time and clearly. After the blood vessel distribution and the exudate mass are detected by the near-infrared monitoring imaging component 5, the signal is transmitted to the controller 8, and the image is displayed on the display 81. The coordinate position change of the exudate mass is detected by the exudate mass stereoscopic monitoring component 6, and the signal is transmitted to the controller 8. The coordinate positions before and after the injection are compared to obtain the size of the exudate mass. At the same time, the injection pressure of the high-pressure injector 1 is detected by the pressure sensor 10, and the signal is transmitted to the controller 8. By comparing the actual exudate mass size with the set size and the actual pressure with the set pressure value, the alarm 9 is controlled to alarm, the high-pressure injector 1 reduces the injection pressure or stops the injection, and the relevant information is displayed on the display 81. The information in the display 81 is further transmitted to the remote monitor 82 to facilitate remote acquisition of relevant information.

[0196] In this embodiment, a voice monitoring and call component is also installed on the installation plate 4, which is connected to the remote monitor 82 for remotely monitoring the patient's status.

[0197] In this embodiment, the multi-parameter monitor is connected to a recording device by any suitable means known in the art so that the signals measured by each detector are separately recorded and stored. For example, the multi-parameter monitor may be connected to a computer component via an optical fiber cable.

[0198] In this embodiment, all components of the multi-parameter monitor are anti-magnetic components, which are used in the magnetic resonance room, and can avoid artifacts caused by magnetic field changes caused by entering and opening the magnetic resonance door. It is ensured that it is not interfered by the high field strength of magnetic resonance and radio frequency pulses during operation, and will not destroy the normal gradient magnetic field of the magnetic resonance equipment.

[0199] Although the present invention has been described in detail above by means of general description, specific implementation methods and tests, it is obvious to those skilled in the art that some modifications or improvements may be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection claimed by the present invention.

Claims

1. A high-pressure injection blood vessel status multi-parameter monitor, characterized in that: It is used to connect with the high-pressure injector (1) and detect the state of the patient during high-pressure injection. The multi-parameter monitor comprises: Mounting rod (2); a folding bracket (3) connected to the mounting rod (2); A mounting plate (4) connected to one end of the folding bracket (3); A near-infrared monitoring imaging component (5) mounted on the mounting plate (4) and used to form a blood vessel distribution contour map and a permeation map in the injection area of ​​the patient; And a three-dimensional monitoring component (6) for exudate mass installed on the installation plate (4) and used for monitoring the exudate status of the patient's injection area.

2. A high-pressure injection blood vessel status multi-parameter monitor according to claim 1, characterized in that: The folding bracket (3) comprises: a first connecting rod (31) rotatably connected to the mounting rod (2); a second connecting rod (32) rotatably connected to the first connecting rod (31); A third connecting rod (33) is rotatably connected to the second connecting rod (32), and the mounting plate (4) is detachably fixedly connected to the third connecting rod (33).

3. A high-pressure injection blood vessel status multi-parameter monitor according to claim 2, characterized in that: The first connecting rod (32) is rotatably connected to the mounting rod (2) via a first rotating shaft (34); The first connecting rod (31) and the second connecting rod (32) are rotatably connected via a second rotating shaft (35); The second connecting rod (32) is rotatably connected to the second connecting rod (33) via a third rotating shaft (36); The first rotating shaft (34) is a damping rotating shaft, or is wrapped with a damping sheet on the outside, or is provided with a damping spring on the outside; The second rotating shaft (35) is a damping rotating shaft, or is wrapped with a damping sheet on the outside, or is provided with a damping spring on the outside; The third rotating shaft (36) is a damping rotating shaft, or is wrapped with a damping sheet on the outside, or is provided with a damping spring on the outside.

4. The high-pressure injection blood vessel status multi-parameter monitor according to claim 1, characterized in that: The bottom of the mounting rod (2) is provided with a thread (21) for connecting with an MR bed (7) or with a counterweight base (22).

5. The high-pressure injection blood vessel status multi-parameter monitor according to claim 1, characterized in that: The near-infrared monitoring imaging component (5) comprises: A near-infrared light emitter (51) mounted on the mounting plate (4) and used for irradiating the injection area of ​​the patient and reflecting a near-infrared signal; a near-infrared light receiver (52) electrically connected to the near-infrared light transmitter (51) and used to receive a reflected signal from the near-infrared light transmitter (51); A processor (53) electrically connected to the near-infrared light receiver (52) and configured to process the near-infrared signal received by the near-infrared light receiver and output an image; and a projector (54) electrically connected to the processor (53) and projecting its output image onto the surface of the injection area of ​​the patient.

6. The high-pressure injection blood vessel status multi-parameter monitor according to claim 1, characterized in that: The exudate mass stereoscopic monitoring component (6) comprises a binocular structured light camera (61) for monitoring the size of the exudate mass in the injection area of ​​the patient, and the binocular structured light camera (61) is installed on both sides of the near-infrared monitoring imaging component (5).

7. The high-pressure injection blood vessel status multi-parameter monitor according to claim 1, characterized in that: The multi-parameter monitor also includes a controller (8) electrically connected to the high-pressure injector (1), the near-infrared monitoring imaging component (5), and the exudate mass stereoscopic monitoring component (6).

8. The high-pressure injection blood vessel status multi-parameter monitor according to claim 7, characterized in that: The controller (8) is electrically connected to an alarm (9); The controller (8) is electrically connected to a pressure detector (10) for detecting the injection pressure of the high-pressure injector (1), and the pressure detector (10) is placed on the high-pressure injector (1).

9. The high-pressure injection blood vessel status multi-parameter monitor according to claim 8, characterized in that: The exudate mass stereoscopic monitoring component (6) monitors the coordinates of the image projected by the near-infrared monitoring imaging component (5), and the pressure detector (10) monitors the injection pressure of the high-pressure injector (1); The exudate mass stereoscopic monitoring component (6) monitors the coordinates of the exudate mass in the injection area of ​​the patient and transmits a signal to the controller (8). When the change in the coordinates of the exudate mass is △x < 0.5 cm, the controller (8) controls the alarm (9) to sound an alarm. The exudate mass stereoscopic monitoring component (6) monitors the coordinates of the exudate mass in the injection area of ​​the patient, and the pressure detector (10) monitors the injection pressure P of the high-pressure injector (1), and transmits the signal to the controller (8). When the change in the coordinates of the exudate mass is 0.5≤△x<1cm and the injection pressure P<150psi, the controller (8) controls the alarm (9) to sound an alarm; The exudate mass stereoscopic monitoring component (6) monitors the coordinates of the exudate mass in the patient's injection area, and the pressure detector (10) monitors the injection pressure P of the high-pressure injector (1), and transmits a signal to the controller (8). When the change in the coordinates of the exudate mass is 0.5≤△x<1cm and the injection pressure is 150≤P<250psi, the controller (8) controls the alarm (9) to sound an alarm, and at the same time controls the injection pressure of the high-pressure injector (1) to be less than 100psi, and restores the injection pressure of the high-pressure injector (1) after 2 to 5 seconds; The exudate mass stereoscopic monitoring component (6) monitors the coordinates of the exudate mass in the injection area of ​​the patient, and the pressure detector (10) monitors the injection pressure P of the high-pressure injector (1), and transmits the signal to the controller (8). When the change in the coordinates of the exudate mass is 1≤△x<2cm, the controller (8) controls the alarm (9) to sound an alarm, and at the same time controls the injection pressure P of the high-pressure injector (1) to be less than 100psi, and restores the injection pressure of the high-pressure injector (1) after 2 to 5 seconds; The exudate mass stereoscopic monitoring component (6) monitors the coordinates of the exudate mass in the patient's injection area, and the pressure detector (10) monitors the injection pressure P of the high-pressure injector (1), and transmits the signal to the controller (8). When the change △x of the coordinates of the exudate mass is ≥2cm or the injection pressure P is ≥250psi, the controller (8) controls the alarm (9) to sound an alarm and controls the high-pressure injector (1) to stop injection.

10. The high-pressure injection blood vessel status multi-parameter monitor according to claim 1, characterized in that: The multi-parameter monitor also includes a display (81) electrically connected to the high-pressure injector (1), the near-infrared monitoring imaging component (5), and the exudate mass stereoscopic monitoring component (6).

Images