CN113230491B - CT contrast agent extravasation monitoring and interrupting device and application method - Google Patents
CT contrast agent extravasation monitoring and interrupting device and application method Download PDFInfo
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- CN113230491B CN113230491B CN202110465708.4A CN202110465708A CN113230491B CN 113230491 B CN113230491 B CN 113230491B CN 202110465708 A CN202110465708 A CN 202110465708A CN 113230491 B CN113230491 B CN 113230491B
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- 239000002872 contrast media Substances 0.000 title claims abstract description 59
- 238000012544 monitoring process Methods 0.000 title claims abstract description 35
- 206010015866 Extravasation Diseases 0.000 title claims abstract description 32
- 230000036251 extravasation Effects 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title abstract description 12
- 210000000707 wrist Anatomy 0.000 claims description 12
- 238000005485 electric heating Methods 0.000 claims description 10
- 208000007624 Extravasation of Diagnostic and Therapeutic Materials Diseases 0.000 claims 4
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000002347 injection Methods 0.000 description 18
- 239000007924 injection Substances 0.000 description 18
- 238000010438 heat treatment Methods 0.000 description 14
- 230000008961 swelling Effects 0.000 description 9
- 210000004204 blood vessel Anatomy 0.000 description 5
- 210000002615 epidermis Anatomy 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 206010067484 Adverse reaction Diseases 0.000 description 2
- 230000006838 adverse reaction Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 210000003414 extremity Anatomy 0.000 description 1
- 210000003195 fascia Anatomy 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 210000003491 skin Anatomy 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 208000011580 syndromic disease Diseases 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
- A61M5/16836—Monitoring, detecting, signalling or eliminating infusion flow anomalies by sensing tissue properties at the infusion site, e.g. for detecting infiltration
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computed tomography [CT]
- A61B6/032—Transmission computed tomography [CT]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/007—Heating or cooling appliances for medical or therapeutic treatment of the human body characterised by electric heating
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- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Heart & Thoracic Surgery (AREA)
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- Optics & Photonics (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
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- Anesthesiology (AREA)
- Hematology (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a CT contrast agent extravasation monitoring interrupt device which comprises a wearing device, a control terminal and an electric valve, wherein the wearing device is arranged in the needle tip direction of an indwelling needle on a monitored arm, the wearing device comprises a miniature camera, a processor unit, a data transceiver unit, a shell and two wristbands, the processor unit and the data transceiver unit are respectively arranged in an inner cavity of the shell, the miniature camera is arranged at the top of the shell, two sides of the shell are respectively connected with one wristband, the miniature camera faces the indwelling needle, the electric valve is arranged at the liquid inlet end of the indwelling needle, the miniature camera is connected with the input end of the control terminal through the processor unit and the data transceiver unit, and the output end of the control terminal is connected with the control end of the electric valve. The invention also discloses an application method of the invention, which can effectively reduce the occurrence of leakage of the contrast agent, can discover the leakage of the contrast agent in time and prevent the contrast agent from being continuously injected, and can relieve the pain of patients.
Description
Technical Field
The invention relates to the field of medical treatment, in particular to a CT contrast agent extravasation monitoring interrupt device and an application method thereof.
Background
CT, magnetic resonance enhancement before examining, need implant the needle of keeping somewhere into patient's blood vessel, then input contrast agent medicine to the blood vessel through keeping somewhere the needle, reach the appointed position, increase the contrast of normal tissue and pathological change tissue, be convenient for diagnosis, in order to ensure that short time contrast agent reaches the focus position, need use high-pressure syringe to adopt the speed of velocity of flow 2-7 ml/second to push in contrast agent, and contrast agent itself has high viscosity, high osmotic pressure's physicochemical property, the problem that the medicine leaks to the outside of blood vessel very easily appears, contrast agent seepage 20ml is less, be slight seepage, general adverse reaction is less, 20-40ml is moderate extravasation, more than 40ml is heavy extravasation, limb swelling can appear after moderate and severe contrast agent seepage, local skin bubble, painful subalternation adverse reaction, serious appearance bone fascia chamber syndrome, patient's misery has increased. It is currently found that extravasation is substantially more than moderate and there is a need for devices or methods that can identify early contrast agent extravasation.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the technical problems in the prior art, the invention provides the CT contrast agent extravasation monitoring and interrupting device and the application method, which can effectively reduce the occurrence of contrast agent leakage, can timely discover the contrast agent leakage and prevent the contrast agent from being continuously injected, and can relieve the pain of patients.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
The utility model provides a CT contrast agent extravasation monitoring interrupt device, includes wearing device, control terminal and electric valve, wearing device sets up the needle tip direction of keeping somewhere the syringe needle on the arm that is monitored, wearing device includes miniature camera head, processor unit, data transceiver unit, shell and two wrist strap, processor unit and data transceiver unit set up respectively in the shell inner chamber, miniature camera head sets up in the shell top, the shell both sides are connected with a wrist strap respectively, miniature camera head is kept somewhere the syringe needle towards, electric valve sets up in the feed liquor end of keeping somewhere the syringe needle, miniature camera head is connected through the input of processor unit and data transceiver unit and control terminal, control terminal's output and electric valve's control end are connected.
Further, the wearing device further comprises a distance sensor and two support legs, the support legs are respectively arranged at the bottom of the shell, the wrist bands are in one-to-one correspondence with the support legs, each wrist band is respectively connected with the end parts of the corresponding support legs, the distance sensor is arranged at the bottom of the shell and between the two support legs, and the output end of the distance sensor is connected with the input end of the data receiving and transmitting unit through the processor unit.
Further, the wearing device further comprises a first pressure sensor and an elastic belt arranged between the two wrist belts, two ends of the elastic belt are respectively connected with the end parts of the two support legs, the first pressure sensor is arranged at the bottom of the elastic belt, and the output end of the first pressure sensor is connected with the input end of the data receiving and transmitting unit through the processor unit.
Further, wearing device still includes electric heat piece, relay and power supply unit, the electric heat piece sets up in the top of elastic webbing, relay and power supply unit set up in the shell inner chamber respectively, the power supply end of electric heat piece is connected through relay and power supply unit, the output of processor unit is connected with the control end of relay.
Further, the wearing device further comprises a motor and a boss arranged at the front end of the shell, the motor is arranged on the boss, a rotating shaft of the motor is connected with the miniature camera, and the output end of the processor unit is connected with the control end of the motor.
Further, a groove is formed in the top of the shell, and the miniature camera is arranged in the groove.
Further, the other end of the wrist strap far away from the shell is respectively provided with a binding belt, a buckle or a magic tape.
The invention also provides a CT contrast agent extravasation monitoring and interrupting system, which comprises a CT contrast agent extravasation monitoring and interrupting device, and an indwelling needle, a high-pressure connecting pipe and a high-pressure injector which are sequentially connected, wherein any one of the CT contrast agent extravasation monitoring and interrupting devices is sleeved on the outer side of the high-pressure connecting pipe by an electric valve of the CT contrast agent extravasation monitoring and interrupting device.
Further, the interruption device for monitoring the extravasation of the CT contrast agent further comprises a second pressure sensor, the second pressure sensor is arranged at the output end of the high-pressure injector, the second pressure sensor is connected with the input end of the control terminal, and the output end of the control terminal is connected with the control end of the high-pressure injector.
The invention also provides an application method of the CT contrast agent extravasation monitoring interrupt device, which comprises the following steps:
S1) before injection starts, a miniature camera acquires a current image, a distance sensor acquires current distance information, a first pressure sensor acquires current pressure information and sends the current pressure information to a processor unit, the processor unit respectively sends the current image, the current distance information and the current pressure information to a control terminal through a data receiving and sending unit, after receiving the current image, the current distance information and the current pressure information, the control terminal takes the current image as an original image if the current image meets the requirements, takes the current distance information as the original distance information, takes the current pressure information as the original pressure information and jumps to the step S2), otherwise, the control terminal sends a motor instruction to the data receiving and sending unit, the data receiving and sending unit sends the motor instruction to the processor unit, the processor unit controls the motor to rotate according to the motor instruction, and then acquires the current image, the current distance information and the current pressure information and sends the current pressure information to the control terminal through the data receiving and sending unit until the current image meets the requirements;
S2) after injection starts, the control terminal sends a heating instruction to the data receiving and transmitting unit, the data receiving and transmitting unit sends the heating instruction to the processor unit, the processor unit controls the relay to be connected according to the heating instruction, the miniature camera head acquires a current image, the distance sensor acquires current distance information, the pressure sensor acquires current pressure information and sends the current pressure information to the processor unit, the processor unit respectively sends the current image, the current distance information and the current pressure information to the control terminal through the data receiving and transmitting unit, and the control terminal receives the current image sent by the data receiving and transmitting unit at intervals of 0.5 seconds and receives the current distance information and the current pressure information sent by the data receiving and transmitting unit in real time;
s3) the control terminal compares the current image with the original image, the current distance information with the original distance information and the current pressure information with the original pressure information, if the color of the current image relative to the same part in the original image is changed or the swelling or pore enlargement occurs, or the change value of the current distance information relative to the original distance information exceeds 0.1-0.5 cm, or the change value of the current pressure information relative to the original pressure information exceeds a preset first threshold value, the step S4) is skipped, otherwise, the step S2) is returned until the injection is finished;
S4) the control terminal controls the electric valve to be closed, meanwhile, a heating stopping instruction is sent to the data receiving and sending unit, the data receiving and sending unit sends the heating stopping instruction to the processor unit, the processor unit controls the relay to be disconnected according to the heating stopping instruction, the control terminal further obtains pressure information sent by the second pressure sensor in real time, and if the difference value between the pressure information of the next time period and the pressure information of the current time period is larger than a preset second threshold value, the control terminal controls the high-pressure injector to be closed.
Compared with the prior art, the invention has the advantages that:
1. The invention comprises a miniature camera, medical staff can judge whether the leakage condition of the contrast agent occurs in time by observing the image near the indwelling needle head shot by the miniature camera through the control terminal, and meanwhile, the invention also comprises an electric valve, and under the condition that the leakage of the contrast agent occurs again, the medical staff operates the control terminal to enable the electric valve to be closed, so that the continuous injection of the contrast agent can be prevented, the leakage condition is avoided to be more serious, and the pain of a patient is relieved;
2. The invention comprises the distance sensor arranged at the bottom of the shell of the wearing device, can reflect the swelling condition of the injection area of the indwelling needle head in real time according to the change of the relative distance of the reference, avoids the condition that swelling is beyond the shooting area of the miniature camera and cannot be monitored, and perfects the monitoring range;
3. the invention comprises an elastic belt arranged at the bottom of the shell of the wearing device, wherein the bottom of the elastic belt is provided with a first pressure sensor which can transmit the pressure information of the epidermis of the injection area of the indwelling needle head in real time, and medical staff can adjust the flow rate of the contrast agent injection according to the pressure information, thereby reducing the uncomfortable feeling of patients and preventing the contrast agent leakage;
4. According to the invention, the electric heating sheet is arranged at the top of the elastic belt, and in the injection process, the processor unit enables the relay, the power supply end of the electric heating sheet and the power supply unit are conducted and then emit heat, so that the injection area of the indwelling needle head is subjected to hot compress, the viscosity of the injected contrast agent is reduced through heating, the pressure on blood vessels is reduced, and the incidence rate of leakage of the contrast agent is reduced;
5. According to the method, the current image and the original image, the current distance information and the original distance information, and the current pressure information and the original pressure information are compared in the injection process, and the leakage of the contrast agent can be accurately and timely confirmed and treated by analyzing various information, so that the treatment efficiency of the leakage of the contrast agent is improved.
Drawings
Fig. 1 is a system configuration diagram of an embodiment of the present invention.
Fig. 2 is a front view of a wearable device according to an embodiment of the present invention.
Fig. 3 is a top view of a wearable device according to an embodiment of the invention.
Fig. 4 is a side view of the wearable device in a use state in an embodiment of the present invention.
Fig. 5 is a block diagram showing the connection relationship of electrical components in an embodiment of the present invention.
Legend description: the portable electronic device comprises a 1-wearing device, a 2-control terminal, a 3-electric valve, a 11-shell, a 12-wrist strap, a 13-bracket leg, a 14-elastic strap, a 15-motor, a 16-boss, a 101-miniature camera, a 102-processor unit, a 103-data transceiver unit, a 104-distance sensor, a 105-first pressure sensor, a 106-electric heating sheet, a 107-relay and a 108-power supply unit.
Detailed Description
The invention is further described below in connection with the drawings and the specific preferred embodiments, but the scope of protection of the invention is not limited thereby.
As shown in fig. 1 to 4, the invention provides a CT contrast agent extravasation monitoring interrupt device, which comprises a wearing device 1, a control terminal 2 and an electric valve 3, wherein the wearing device 1 is arranged in the needle tip direction of an indwelling needle on a monitored arm, the wearing device comprises a miniature camera 101, a processor unit 102, a data transceiver unit 103, a shell 11 and two wristbands 12, the processor unit 102 and the data transceiver unit 103 are respectively arranged in the inner cavity of the shell 11, the miniature camera 101 is arranged at the top of the shell 11, two sides of the shell 11 are respectively connected with one wristband 12, the miniature camera 101 faces the indwelling needle, specifically, the distance between the miniature camera 101 and the indwelling needle is 0.5 cm, the electric valve 3 is arranged at the indwelling needle and is connected with the liquid inlet end of a high-pressure conveying pipe, as shown in fig. 5, the miniature camera 101 is connected with the input end of the control terminal 2 through the processor unit 102 and the data transceiver unit 103, and the control end of the electric valve 3.
Through the above structure, in this embodiment, the image near the indwelling needle that is shot by the miniature camera 101 is sent to the processor unit 102, the processor unit 102 receives the image data and then forwards the image data to the data transceiver unit 103, the data transceiver unit 103 forwards the image data to the control terminal 2 again, the medical staff looks over the image near the indwelling needle through the control terminal 2, if the conditions of color change, swelling and pore enlargement are found, an enabling signal is sent to the control end of the electric valve 3 through the control terminal 2, and in this embodiment, the electric valve 3 adopts a normally open electric valve, so that the electric valve 3 is closed, the contrast agent is prevented from being continuously injected, the leakage condition is avoided to be more serious, and the pain of the patient is relieved.
As shown in fig. 4, when the contrast agent leaks, the possible swelling area is outside the shooting area of the miniature camera 101, so, as shown in fig. 2, the wearable device 1 further includes a distance sensor 104 and two support legs 13, the support legs 13 are respectively disposed at the bottom of the housing 11, the wrist bands 12 and the support legs 13 are in one-to-one correspondence, each wrist band 12 is respectively connected with an end of the corresponding support leg 13, the distance sensor 104 is disposed at the bottom of the housing 11 and between the two support legs 13, and as shown in fig. 5, an output end of the distance sensor 104 is connected with an input end of the data transceiver 103 through the processor unit 102. Through the distance sensor 104 arranged at the bottom of the shell 11, the swelling condition of the injection area of the indwelling needle can be reflected in real time according to the change of the relative distance of the reference, the condition that swelling exists outside the shooting area of the miniature camera 101 and cannot be monitored is avoided, and the monitoring range is perfected.
As shown in fig. 2 and 4, the wearable device 1 in this embodiment further includes a first pressure sensor 105 and an elastic band 14 disposed between the two wrist bands 12, where two ends of the elastic band 14 are respectively connected to ends of the two support legs 13, the first pressure sensor 105 is disposed at a bottom of the elastic band 14, and as shown in fig. 5, an output end of the first pressure sensor 105 is connected to an input end of the data transceiver 103 through the processor unit 102. The elastic band 14 presses the first pressure sensor 105 against the epidermis of the monitored arm, so that the first pressure sensor 105 can monitor the pressure information of the epidermis of the indwelling needle injection area and sequentially send the pressure information to the control terminal 2 through the processor unit 102 and the data receiving and transmitting unit 103, medical staff can check the pressure information through the control terminal 2, adjust the flow rate of the contrast agent injection according to the pressure information, thereby reducing discomfort of patients and preventing leakage of the contrast agent, and meanwhile, according to the change of the pressure information in different periods, the medical staff can also judge whether the leakage of the contrast agent occurs or not, so that the medical staff can process timely.
As shown in fig. 2 to 4, the wearable device 1 further includes an electric heating sheet 106, a relay 107 and a power supply unit 108 in this embodiment, where the relay 107 is a normally open relay, the electric heating sheet 106 is disposed at the top of the elastic belt 14, the relay 107 and the power supply unit 108 are respectively disposed in the inner cavity of the housing 11, as shown in fig. 5, a power supply end of the electric heating sheet 106 is connected with the power supply unit 108 through the relay 107, and an output end of the processor unit 102 is connected with a control end of the relay 107. In order to reduce uncomfortable feeling of a patient, the indwelling needle injection area is subjected to hot compress through the structure, so that viscosity of injected contrast agent is reduced through heating, pressure generated to blood vessels is reduced, leakage of the contrast agent is reduced, but if leakage of the contrast agent occurs, the situation that the hot compress will aggravate swelling is continued, and therefore a relay 107 is arranged between an electric heating sheet 106 and a power supply unit 108 in the embodiment, when leakage of the contrast agent occurs, medical staff sends an instruction to a data receiving unit 103 through a control terminal 2, the data receiving unit 103 forwards the instruction to a processor unit 102, and the processor unit 102 stops enabling the relay 107 after receiving the instruction, so that the relay 107 is disconnected.
As shown in fig. 2 to 4, the wearable device 1 in this embodiment further includes a motor 15 and a boss 16 disposed at the front end of the housing 11, the motor 15 is disposed on the boss 16, a rotation shaft of the motor 15 is connected to the miniature camera 101, and as shown in fig. 5, an output end of the processor unit 102 is connected to a control end of the motor 15. Through the structure, medical staff can send instructions to the data receiving and transmitting unit 103 through the control terminal 2, the data receiving and transmitting unit 103 forwards the instructions to the processor unit 102, the processor unit 102 can enable the motor 15 to rotate forward or reversely after receiving the instructions, and the motor 15 rotates to drive the miniature camera 101 to rotate, so that the monitoring range of the miniature camera 101 is enlarged, and the medical staff can adjust the angle of the miniature camera 101 according to actual requirements, so that a proper image is obtained.
In this embodiment, the power supply unit 108 may be connected to the power supply terminals of the motor 15, the micro camera 101, the processor unit 102, the data transceiver unit 103, the distance sensor 104, and the first pressure sensor 105, respectively, to supply power to these electrical components.
In this embodiment, the control terminal 2 is a PC, and the processor unit 102 is a PLC.
In this embodiment, the elastic band 14 is a rubber band or a silicone tape, and has a thickness of 0.5 to 1.5mm.
In this embodiment, a groove is formed in the top of the housing 11, and the micro camera 101 is disposed in the groove, so as to avoid collision between the micro camera 101 and the top of the housing 11.
The other end of the wrist strap 12 far away from the housing is respectively provided with a binding band, a buckle or a magic tape.
The embodiment also provides a CT contrast agent extravasation monitoring interrupt system, as shown in fig. 1, comprising a CT contrast agent extravasation monitoring interrupt device, and an indwelling needle, a high-pressure connecting pipe and a high-pressure injector which are sequentially connected, wherein the CT contrast agent extravasation monitoring interrupt device is any one of the CT contrast agent extravasation monitoring interrupt devices, and an electric valve 3 of the CT contrast agent extravasation monitoring interrupt device is sleeved on the outer side of the high-pressure connecting pipe.
As shown in fig. 1, the interruption device for monitoring the extravasation of the CT contrast agent further comprises a second pressure sensor, the second pressure sensor is arranged at the output end of the high-pressure injector, the second pressure sensor is connected with the input end of the control terminal 2, and the output end of the control terminal 2 is connected with the control end of the high-pressure injector. Through the structure, medical staff can check the injection pressure of the high-pressure injector through the control terminal 2, and when the electric valve 3 is closed or the high-pressure connecting pipe is blocked, the pressure value returned by the second pressure sensor is continuously increased, so that the high-pressure injector is prevented from being damaged, and the medical staff sends out an instruction to stop the high-pressure injector through the control terminal 2.
According to the above-mentioned CT contrast agent extravasation monitoring interrupt device and CT contrast agent extravasation monitoring interrupt device system, the present embodiment further provides a method for applying the CT contrast agent extravasation monitoring interrupt device, including the following steps:
S1) before injection starts, the miniature camera 101 acquires a current image, the distance sensor 104 acquires current distance information, the first pressure sensor 105 acquires current pressure information and sends the current pressure information to the processor unit 102, the processor unit 102 respectively sends the current image, the current distance information and the current pressure information to the control terminal 2 through the data transceiver unit 103, after receiving the current image, the current distance information and the current pressure information, the control terminal 2 takes the current image as an original image, takes the current distance information as the original distance information, takes the current pressure information as the original pressure information and jumps to the step S2, otherwise, the control terminal 2 sends a motor instruction to the data transceiver unit 103, the data transceiver unit 103 sends the motor instruction to the processor unit 102, the processor unit 102 enables the motor 15 to rotate forwards or reversely according to the motor instruction, and then acquires the current image, the current distance information and the current pressure information and sends the current pressure information to the control terminal 2 through the data transceiver unit 103 until the current image meets the requirements;
S2) after injection starts, the control terminal 2 sends a heating instruction to the data receiving and transmitting unit 103, the data receiving and transmitting unit 103 sends the heating instruction to the processor unit 102, the processor unit 102 enables the relay 107 to be connected with the electric heating sheet 106 and the power supply unit 108 according to the heating instruction, the miniature camera 101 acquires a current image, the distance sensor 104 acquires current distance information, the pressure sensor 105 acquires current pressure information and sends the current pressure information to the processor unit 102, the processor unit 102 respectively sends the current image, the current distance information and the current pressure information to the control terminal 2 through the data receiving and transmitting unit 103, and the control terminal 2 receives the current image sent by the data receiving and transmitting unit 103 at intervals of 0.5 seconds and receives the current distance information and the current pressure information sent by the data receiving and transmitting unit 103 in real time;
S3) the control terminal 2 compares the current image with the original image, the current distance information with the original distance information and the current pressure information with the original pressure information, if the color of the current image relative to the same part in the original image changes or swells or pores increase, or the change value of the current distance information relative to the original distance information exceeds 0.1-0.5 cm, or the change value of the current pressure information relative to the original pressure information exceeds a preset first threshold value, the step S4) is skipped, otherwise, the step S2) is returned until the injection is finished;
S4) the control terminal 2 enables the electric valve 3 to be closed, and simultaneously sends a heating stop instruction to the data transceiver unit 103, the data transceiver unit 103 sends the heating stop instruction to the processor unit 102, the processor unit 102 stops the enable relay 107 according to the heating stop instruction, the control terminal 2 further acquires pressure information sent by the second pressure sensor in real time, and if the difference between the pressure information of the next time period and the pressure information of the current time period is greater than a preset second threshold value, the control terminal 2 sends a closing instruction to the high-pressure injector.
The foregoing is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. While the invention has been described with reference to preferred embodiments, it is not intended to be limiting. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention shall fall within the scope of the technical solution of the present invention.
Claims (5)
1. The utility model provides a CT contrast medium extravasation monitoring interrupt device, its characterized in that includes wearing device (1), control terminal (2) and electric valve (3), wearing device (1) set up the needle tip direction of the needle of keeping somewhere on the arm of being monitored, wearing device includes miniature camera head (101), processor unit (102), data transceiver unit (103), shell (11) and two wrist strap (12), processor unit (102) and data transceiver unit (103) set up respectively in shell (11) inner chamber, miniature camera head (101) set up in shell (11) top, shell (11) both sides are connected with wrist strap (12) respectively, miniature camera head (101) are kept somewhere the needle towards, electric valve (3) set up in the feed-in end of keeping somewhere the needle, miniature camera head (101) are connected through processor unit (102) and data transceiver unit (103) and control terminal (2) input, the output of control terminal (2) and the control end of electric valve (3) are connected, wearing device (1) include that sensor (104) and leg (13) are located respectively in leg (13) support (13) and leg (13), each wristband (12) is respectively connected with the end parts of the corresponding bracket legs (13), the distance sensor (104) is arranged at the bottom of the shell (11) and between the two bracket legs (13), the output end of the distance sensor (104) is connected with the input end of the data receiving and transmitting unit (103) through the processor unit (102), the wearing device (1) further comprises a first pressure sensor (105) and an elastic belt (14) arranged between the two wristbands (12), the two ends of the elastic belt (14) are respectively connected with the end parts of the two bracket legs (13), the first pressure sensor (105) is arranged at the bottom of the elastic belt (14), the output end of the first pressure sensor (105) is connected with the input end of the data receiving and transmitting unit (103) through the processor unit (102), the wearing device (1) further comprises an electric heating sheet (106), a relay (107) and a power supply unit (108), the electric heating sheet (106) is arranged at the top of the elastic belt (14), the relay (107) and the power supply unit (108) are respectively arranged at the output end of the power supply unit (107) through the processor unit (102) and the power supply unit (107), the wearable device (1) further comprises a motor (15) and a boss (16) arranged at the front end of the shell (11), the motor (15) is arranged on the boss (16), a rotating shaft of the motor (15) is connected with the miniature camera (101), and an output end of the processor unit (102) is connected with a control end of the motor (15).
2. CT contrast media extravasation monitoring interrupt device according to claim 1, characterized in that the top of the housing (11) is provided with a recess in which the miniature camera (101) is arranged.
3. CT contrast media extravasation monitoring interrupt device according to claim 1, characterized in that the other end of the wristband (12) remote from the housing is provided with a strap, buckle or velcro, respectively.
4. The utility model provides a CT contrast agent extravasation monitoring interrupt system which characterized in that includes CT contrast agent extravasation monitoring interrupt device and the keep somewhere syringe needle, high-pressure connecting pipe and the high-pressure syringe that connect gradually, CT contrast agent extravasation monitoring interrupt device is the CT contrast agent extravasation monitoring interrupt device of any one of claims 1~3, CT contrast agent extravasation monitoring interrupt device's electric valve (3) cover is located the outside of high-pressure connecting pipe.
5. The CT contrast media extravasation monitoring interrupt system of claim 4, wherein the CT contrast media extravasation monitoring interrupt device further comprises a second pressure sensor disposed at the output of the high pressure syringe, the second pressure sensor being connected to the input of the control terminal (2), the output of the control terminal (2) being connected to the control terminal of the high pressure syringe.
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| US7308300B2 (en) * | 2001-05-30 | 2007-12-11 | Acist Medical Systems, Inc. | Medical injection system |
| JP5575515B2 (en) * | 2010-03-23 | 2014-08-20 | 株式会社東芝 | Medical diagnostic imaging system |
| JP5978427B2 (en) * | 2011-07-27 | 2016-08-24 | 株式会社日立製作所 | X-ray CT apparatus and contrast imaging method |
| CN207462416U (en) * | 2017-01-18 | 2018-06-08 | 华中科技大学同济医学院附属同济医院 | A kind of contrast agent injects stationary monitoring device |
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