Intraarterial puncture catheterization needle for critical patient

Abstract

The intraarterial puncture catheterization needle comprises a needle base, a puncture head and an intelligent monitor, a catheter is arranged at the bottom end of the needle base, branch tubes are symmetrically arranged on the two sides of the needle base, the inner side of the catheter is divided into a monitoring channel and a flow guide channel, the monitoring channel and the flow guide channel are communicated with the two branch tubes respectively, and the intelligent monitor is connected with the monitoring channel. A puncture channel is arranged on the inner side of the needle seat, and the flow guide channel extends upwards to be communicated with the puncture channel. A steel needle is arranged at the bottom end of the puncture head, and the steel needle is inserted into the puncture channel from the top of the needle base and penetrates out of the bottom end of the flow guide channel; the top of the intelligent monitor is provided with a guide wire, and the guide wire penetrates into the monitoring channel from the branch pipe. The two branch pipes are arranged on the catheter base, each branch pipe is connected with the corresponding hose, the connecting bases are arranged at the ends of the hoses, one connecting base is connected with the intelligent monitor, the pressure sensor and the flow sensor are integrated in the intelligent monitor, and the blood pressure of a patient can be detected through the pressure sensor.

Description

Technical Field

[0001] The present invention relates to the technical field of catheter needles, and particularly to an arterial puncture catheter needle for critically ill patients. Background Art

[0002] In the field of intensive care treatment, it is crucial to perform precise arterial blood pressure monitoring, frequent arterial blood gas analysis, etc. on critically ill patients. Traditional arterial puncture methods have many limitations. For example, ordinary puncture needles are difficult to stably remain in the artery after successful puncture, easily leading to complications such as bleeding and hematoma at the puncture site, and repeated punctures increase the patient's pain and the risk of vascular injury. Therefore, some new types of arterial indwelling needles have emerged on the market.

[0003] For example, Chinese Patent with Publication No. CN103948984B discloses an arterial indwelling needle capable of displaying arterial pulsation, which includes a stainless steel needle, an indwelling needle, a pressure measuring catheter, and a steel wire inner core. The stainless steel needle includes a needle body and a needle seat. A guiding device is installed on the needle seat. The needle body is hollow, and a cavity is opened inside the needle seat. The steel wire inner core enters the stainless steel needle through the guiding device of the needle seat. A blood return groove is provided on the side wall of the needle body; the indwelling needle is composed of an indwelling needle catheter, a catheter seat located at the tail end of the indwelling needle tube, and a check valve placed inside the catheter seat. The catheter seat is sleeved with the needle seat. The catheter seat is hollow and is provided with a side tube communicating with the catheter seat. The side tube is connected to the pressure measuring catheter. The check valve is located above the side tube, and the blood return groove is located in the inner cavity formed by the catheter seat and the check valve; a hemostatic clip is provided on the pressure measuring catheter. This kind of arterial indwelling needle has a simple structure and is convenient to use, can effectively improve the success rate of arterial puncture and catheterization, avoid pollution caused by blood overflow, and reduce the patient's pain and economic burden.

[0004] The arterial indwelling needle provided by the above patent measures pressure by relying on the pressure measuring catheter. However, this kind of arterial indwelling needle cannot detect the blood flow of the artery and does not have an auxiliary puncture mechanism, which is not convenient for the staff to perform precise puncture treatment. Summary of the Invention

[0005] The purpose of the present invention is to provide an arterial puncture catheter needle for critically ill patients, aiming to improve the problem that the existing indwelling needle tube cannot detect the blood flow of the artery and does not have an auxiliary puncture mechanism, which is not convenient for the staff to perform precise puncture treatment.

[0006] The present invention is realized as follows:

[0007] An arterial puncture catheter needle for critically ill patients, comprising a needle hub, a catheter is provided at the bottom end of the needle hub, branch tubes are symmetrically provided on both sides of the needle hub, the inner side of the catheter is divided into a monitoring channel and a diversion channel, the monitoring channel and the diversion channel communicate with the two branch tubes respectively, a puncture channel is provided inside the needle hub, and the diversion channel extends upward to communicate with the puncture channel;

[0008] A puncture head, a steel needle is provided at the bottom end of the puncture head, the steel needle is inserted into the puncture channel from the top of the needle hub and passes out from the bottom end of the diversion channel;

[0009] An intelligent detector, a guide wire is provided at the top of the intelligent monitor, and the guide wire penetrates into the monitoring channel from the branch tube.

[0010] Preferably, a white isolation plug is provided at the inner top end of the needle hub, an insertion port is provided at the top end of the needle hub, a socket joint is provided at the connection between the needle hub and the catheter, a throttle valve is provided on the side of the branch tube, and hoses are provided at the top ends of the branch tubes, a connection seat is provided at the bottom end of the hose, an end cap is provided on the side of the connection seat, and a connection head is provided at the bottom end of the connection seat.

[0011] Preferably, side holes are provided at the bottom of the side of the catheter; and the catheter is made of a medical polymer material with biocompatibility and flexibility, a heparin coating is provided on the outer wall of the catheter, and the monitoring channel and the diversion channel inside the catheter do not interfere with each other.

[0012] Preferably, a plug is provided at the connection between the puncture head and the steel needle, and the plug is inserted into the insertion port at the top end of the needle hub; the steel needle passes through the white isolation plug and is inserted into the diversion channel, and a needle-holding handle is provided on the side of the puncture head.

[0013] Preferably, a plug post is provided at the connection part between the intelligent monitor and the guide wire, the plug post is inserted into the connection seat, and the intelligent monitor is threadedly connected to the connection head; a connecting wire is provided at the bottom of the intelligent monitor, a connecting plug is provided at the end of the connecting wire, and the connecting wire cooperates with the connecting plug to be connected to a display screen.

[0014] Preferably, an MCU control module is integrated inside the intelligent monitor, the MCU control module is connected with a pressure sensor and a flow sensor, the flow sensor is arranged at the bottom position of the guide wire and is used for measuring the blood flow in the monitored artery after the guide wire is inserted into the artery, the pressure sensor is arranged on the guide wire, and the guide wire provided with the pressure sensor is placed inside the monitoring channel for real-time monitoring of arterial blood pressure.

[0015] Preferably, the specific calculation method for the flow sensor to measure the blood flow in the artery is as follows: The blood flow Q in the artery can be expressed as:

[0016]

[0017] Among them, r is the radius of the arterial blood vessel (unit: m), η is the blood viscosity (unit: Pa·s), L is the blood vessel length (unit: m), and ΔP is the pressure difference (unit: Pa).

[0018] Preferably, the flow sensor collects the blood flow data in real time as Q 实际 , and transmits it to the MCU control module. The MCU control module transmits Q 实际 to compare with the preset normal arterial flow range Q 正常 . If Q 实际 deviates from Q 正常 range, the MCU control module adjusts the release rate of the heparin coating through a specific algorithm. Let the initial value of the release rate of the heparin coating be R0 (unit: mg / s), and the flow deviation ratio is:

[0019]

[0020] Then the adjusted release rate R of the heparin coating can be calculated by the following formula:

[0021] R = R0(1 + k)

[0022] The pressure sensor transmits the monitored arterial blood pressure data to the MCU control module. The MCU control module analyzes and processes the blood pressure data, and displays the blood pressure value and the flow value on the display screen in real time.

[0023] Preferably, the intelligent monitor further includes an ultrasonic imaging module. The ultrasonic imaging module is connected to the MCU control module. The ultrasonic imaging module integrates a microprocessor. The microprocessor is connected to a micro ultrasonic transducer array unit, a signal processing unit, an imaging unit, and an image transmission unit. The micro ultrasonic transducer array unit is integrated at the end of one end of the guide wire insertion monitoring channel. The ultrasonic transducer array unit is used to transmit and receive high-frequency ultrasonic signals. The signal processing unit is used to process and convert the collected signals to facilitate cooperation with the imaging unit. The imaging unit is used to perform imaging processing on the signals collected by the signal processing unit. The image transmission unit is used to connect to the display screen to facilitate the real-time presentation of the image of the blood vessels around the steel needle.

[0024] Preferably, it further includes a needle cap. The needle cap is sleeved outside the catheter, and a sealing joint is provided at the top of the needle cap. The sealing joint is sleeved at the bottom of the needle seat, and the sealing joint seals between the needle cap and the needle seat.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. The present invention is provided with two branch pipes on the catheter base, and each branch pipe is connected with a flexible hose. A connecting seat is provided at the end of the flexible hose. One of the connecting seats is connected with an intelligent monitor, which integrates a pressure sensor and a flow sensor. The blood pressure of the patient can be detected by the pressure sensor, and the blood flow of the artery can be monitored by the flow sensor. At the same time, an ultrasonic imaging module is provided at the end of the intelligent monitor. Through the ultrasonic imaging module, the vascular tissue can be imaged and observed during the puncture weighing, which also facilitates observing the needle tube orientation and enables the needle tube to smoothly puncture into the patient's artery.

[0027] 2. The present invention sets a throttle valve on the branch pipe. The throttle valve can delay the problem of too fast blood flow rising speed during puncture and can restrict the blood flow.

[0028] 3. The present invention sets a guide wire in the intelligent detector, and the pressure sensor and the flow sensor are integrated on the guide wire. By inserting the guide wire into the inner side of the catheter and extending the guide wire into the blood vessel, it is convenient to accurately detect the blood pressure and blood flow inside the blood vessel. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is the schematic structural diagram of the whole of the present invention;

[0030] Figure 2 is the three-dimensional structural diagram of the needle base of the present invention;

[0031] Figure 3 is the cross-sectional view of the internal channel of the needle base of the present invention;

[0032] Figure 4 is the structural diagram of the puncture head of the present invention;

[0033] Figure 5 is the structural diagram of the intelligent monitor of the present invention;

[0034] Figure 6 is the structural block diagram of the intelligent monitor of the present invention;

[0035] Figure 7 is the structural block diagram of the ultrasonic imaging module of the present invention;

[0036] Figure 8 is the structural block diagram of the needle cap of the present invention.

[0037] In the figure: 1. Needle seat; 11. Sleeve joint; 12. Conduit; 121. Monitoring channel; 122. Diversion channel; 123. Puncture channel; 13. Side hole; 14. Branch pipe; 15. Throttle valve; 16. Socket; 17. Hose; 18. Connection seat; 181. End cap; 182. Connector; 2. Puncture head; 21. Plug; 22. Needle-holding handle; 23. Steel needle; 3. Intelligent monitor; 31. Insertion post; 32. Guide wire; 33. Connecting wire; 34. Connecting plug; 4. Needle cap; 41. Sealing joint. Detailed implementation mode

[0038] In the present invention, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0039] The following is a further description in conjunction with the drawings and specific embodiments:

[0040] Embodiment 1

[0041] Such as Figure 1 , Figure 2 And Figure 3As shown in the figure, an arterial puncture catheter needle for critically ill patients includes a needle seat 1, a puncture head 2, and an intelligent monitor 3. A catheter 12 is provided at the bottom end of the needle seat 1, and the catheter 12 is convenient for cooperating with the puncture head 2 to perform arterial puncture on the patient. Two branch tubes 14 are symmetrically provided on both sides of the needle seat 1, and the two branch tubes 14 facilitate providing a larger operating space for medical staff. The inner side of the catheter 12 is divided into a monitoring channel 121 and a diversion channel 122, and the monitoring channel 121 and the diversion channel 122 communicate with the two branch tubes 14 respectively. A puncture channel 123 is provided inside the needle seat 1, and the diversion channel 122 extends upward to communicate with the puncture channel 123; the monitoring channel 121 is convenient for cooperating with the intelligent monitor 3 to detect the arterial blood flow of the patient and facilitate real-time understanding of the condition of the patient's arterial blood flow. The diversion channel 122 is convenient for cooperating with the other branch tube 14 to facilitate medical staff to inject medicine into the artery or take samples from the artery. The puncture channel 123 is convenient for cooperating with the puncture head 2, so that the puncture head 2 can pass through the puncture channel 123 and the diversion channel 122 to penetrate the catheter 12. A steel needle 23 is provided at the bottom end of the puncture head 2, and the steel needle 23 is inserted into the puncture channel 123 from the top of the needle seat 1 and passes out from the bottom end of the diversion channel 122; the steel needle 23 is convenient for cooperating with the catheter 12 to puncture the patient. A guide wire 32 is provided at the top of the intelligent monitor 3, and the guide wire 32 penetrates into the monitoring channel 121 from the branch tube 14, so as to facilitate the monitoring of the arterial blood.

[0042] As Figure 2 and Figure 3 shown in the figure, a white isolation plug is provided at the top end inside the needle seat 1. The white isolation plug is to prevent blood from flowing out of the entire catheter needle through the puncture channel 123. After the steel needle 23 is pulled out, the gap of the white isolation plug will automatically recover to achieve the purpose of blocking. An insertion interface 16 is provided at the top end of the needle seat 1, and the insertion interface 16 is convenient for connecting with the puncture head 2. A socket joint 11 is provided at the connection between the needle seat 1 and the catheter 12, and a throttle valve 15 is provided on the side of the branch tube 14. The throttle valve 15 is convenient for controlling the opening and closing of the branch tube 14. Flexible hoses 17 are provided at the top ends of the branch tubes 14, and a connection seat 18 is provided at the bottom end of the flexible hose 17. The flexible hose 17 and the connection seat 18 are convenient for connecting with components such as a syringe or the intelligent monitor 3. An end cap 181 is provided on the side of the connection seat 18, and a connection head 182 is provided at the bottom end of the connection seat 18. The connection head 182 is convenient for the connection seat 18 to stably connect with components such as the intelligent monitor 3 or a syringe. A side hole 13 is provided at the bottom of the side of the catheter 12; the side hole 13 provides an additional inflow channel for the infusion liquid. When the main needle hole causes poor liquid flow due to certain reasons (such as partial blockage, sticking to the wall, etc.), the side hole 13 can share the infusion task and enable the liquid to enter the blood vessel more smoothly. The catheter 12 is made of a medical polymer material with biocompatibility and flexibility, such as polyurethane. A heparin coating is provided on the outer wall of the catheter 12, which can effectively reduce the risk of thrombus formation. The monitoring channel 121 and the diversion channel 122 inside the catheter 12 do not interfere with each other.

[0043] As Figure 4 shown, a plug 21 is provided at the connection between the puncture head 2 and the steel needle 23, and the plug 21 is inserted into the inner part of the socket 16 at the top end of the needle base 1; this structure facilitates the stable connection of the puncture head 2 to the needle base 1. The steel needle 23 passes through the white isolation plug and is inserted into the diversion channel 122. A needle-holding handle 22 is provided on the side of the puncture head 2. The needle-holding handle 22 facilitates the operation of medical staff, making it convenient for puncture and also for pulling out the puncture head 2.

[0044] As Figure 5 shown, a plug post 31 is provided at the connection part between the intelligent monitor 3 and the guide wire 32. The plug post 31 is inserted into the inner part of the connection base 18, and the intelligent monitor 3 is threadedly connected to the connection head 182; this structure ensures the stable connection of the intelligent monitor 3 to the connection base 18. A communication wire 33 is provided at the bottom of the intelligent monitor 3, and a communication plug 34 is provided at the end of the communication wire 33. The communication wire 33 and the communication plug 34 are used to connect to the display screen, facilitating the transmission of the data and images monitored by the intelligent monitor 3 to the display screen. An MCU control module is integrated inside the intelligent monitor 3. The MCU control module is connected to a pressure sensor and a flow sensor. The flow sensor is arranged at the bottom position of the guide wire 32 and is used to monitor the blood flow in the artery after the guide wire 32 is inserted into the artery. The pressure sensor is arranged on the guide wire 32, and the guide wire 32 provided with the pressure sensor is placed inside the monitoring channel 121 for real-time monitoring of the arterial blood pressure. The specific calculation method for the flow sensor to measure the blood flow in the artery is as follows: The blood flow Q in the artery can be expressed as:

[0045]

[0046] where r is the radius of the arterial blood vessel (unit: m), η is the blood viscosity (unit: Pa·s), L is the blood vessel length (unit: m), and ΔP is the pressure difference (unit: Pa). The flow sensor collects the blood flow data Q 实际 , and transmits it to the MCU control module. The MCU control module compares Q 实际 with the preset normal arterial flow range Q 正常 . If Q 实际 deviates from the range of Q 正常 , the MCU control module adjusts the release rate of the heparin coating through a specific algorithm. Let the initial value of the release rate of the heparin coating be R0 (unit: mg / s), and the flow deviation ratio is:

[0047]

[0048] Then the adjusted release rate R of the heparin coating can be calculated by the following formula:

[0049] R = R0(1 + k)

[0050] The pressure sensor transmits the monitored arterial blood pressure data to the MCU control module. The MCU control module analyzes and processes the blood pressure data and real-time displays the blood pressure value and flow rate value on the display screen.

[0051] Embodiment 2

[0052] As Figure 1 、 Figure 2 and Figure 3 shown, an arterial puncture catheter needle for critically ill patients includes a needle hub 1, a puncture head 2, and an intelligent monitor 3. A catheter 12 is provided at the bottom end of the needle hub 1. The catheter 12 facilitates arterial puncture of the patient in cooperation with the puncture head 2. Branch tubes 14 are symmetrically provided on both sides of the needle hub 1. The two branch tubes 14 facilitate providing a larger operating space for medical staff. The inside of the catheter 12 is divided into a monitoring channel 121 and a diversion channel 122. The monitoring channel 121 and the diversion channel 122 communicate with the two branch tubes 14 respectively. A puncture channel 123 is provided inside the needle hub 1. The diversion channel 122 extends upward and communicates with the puncture channel 123. The monitoring channel 121 facilitates detecting the arterial blood flow of the patient in cooperation with the intelligent monitor 3, and facilitates understanding the condition of the patient's arterial blood flow in real time. The diversion channel 122 facilitates cooperation with the other branch tube 14, and facilitates medical staff injecting medicine into the artery or sampling from the artery. The puncture channel 123 facilitates cooperation with the puncture head 2, so that the puncture head 2 can pass through the puncture channel 123 and the diversion channel 122 to penetrate the catheter 12. A steel needle 23 is provided at the bottom end of the puncture head 2. The steel needle 23 is inserted into the puncture channel 123 from the top of the needle hub 1 and passes out from the bottom end of the diversion channel 122. The steel needle 23 facilitates puncturing the patient in cooperation with the catheter 12. A guide wire 32 is provided at the top of the intelligent monitor 3. The guide wire 32 penetrates into the monitoring channel 121 from the branch tube 14, so as to facilitate monitoring the blood of the artery.

[0053] As Figure 2 and Figure 3As shown in the figure, a white isolation plug is provided at the inner top end of the needle seat 1. The white isolation plug is used to prevent blood from flowing out of the entire catheter needle through the puncture channel 123. After the steel needle 23 is withdrawn, the gap of the white isolation plug will automatically recover to achieve the purpose of sealing. An insertion port 16 is provided at the top end of the needle seat 1, which is convenient for connecting with the puncture head 2. A socket joint 11 is provided at the connection between the needle seat 1 and the catheter 12. A throttle valve 15 is provided on the side of the branch pipe 14, and the throttle valve 15 is convenient for controlling the opening and closing of the branch pipe 14. Flexible hoses 17 are provided at the top ends of the branch pipes 14, and a connection seat 18 is provided at the bottom end of the flexible hose 17. The cooperation between the flexible hose 17 and the connection seat 18 is convenient for connecting with components such as a syringe or an intelligent monitor 3. An end cap 181 is provided on the side of the connection seat 18, and a connection head 182 is provided at the bottom end of the connection seat 18. The connection head 182 is convenient for the connection seat 18 to stably connect with components such as the intelligent monitor 3 or a syringe. A side hole 13 is provided at the bottom of the side of the catheter 12; the side hole 13 provides an additional inflow channel for the infusion liquid. When the main needle hole causes poor liquid flow due to certain reasons (such as partial blockage, wall adhesion, etc.), the side hole 13 can share the infusion task and allow the liquid to enter the blood vessel more smoothly. The catheter 12 is made of a medical polymer material with biocompatibility and flexibility, such as polyurethane. A heparin coating is provided on the outer wall of the catheter 12, which can effectively reduce the risk of thrombus formation. The monitoring channel 121 and the diversion channel 122 inside the catheter 12 do not interfere with each other.

[0054] As Figure 4 shown in the figure, a plug 21 is provided at the connection between the puncture head 2 and the steel needle 23, and the plug 21 is inserted into the insertion port 16 at the top end of the needle seat 1; this structure is convenient for the puncture head 2 to stably connect with the needle seat 1. The steel needle 23 passes through the white isolation plug and is inserted into the diversion channel 122. A needle-holding handle 22 is provided on the side of the puncture head 2, and the needle-holding handle 22 is convenient for medical staff to operate, facilitating puncture and also convenient for pulling out the puncture head 2.

[0055] As Figure 5As shown in the figure, a plug post 31 is provided at the connection part of the intelligent monitor 3 and the guide wire 32. The plug post 31 is inserted into the inside of the connection seat 18, and the intelligent monitor 3 is threadedly connected to the connection head 182; this structure ensures that the intelligent monitor 3 is stably connected to the connection seat 18. A connecting wire 33 is provided at the bottom of the intelligent monitor 3, and a connecting plug 34 is provided at the end of the connecting wire 33. The connecting wire 33 and the connecting plug 34 are used to connect to the display screen, facilitating the transmission of the data and images monitored by the intelligent monitor 3 to the display screen. An MCU control module is integrated inside the intelligent monitor 3. The MCU control module is connected to a pressure sensor and a flow sensor. The flow sensor is arranged at the bottom of the guide wire 32 and is used to monitor the blood flow in the artery after the guide wire 32 is inserted into the artery. The pressure sensor is arranged on the guide wire 32, and the guide wire 32 provided with the pressure sensor is placed inside the monitoring channel 121 for real-time monitoring of the arterial blood pressure. The specific calculation method for the flow sensor to measure the blood flow in the artery is as follows: The blood flow Q in the artery can be expressed as:

[0056]

[0057] where r is the radius of the arterial blood vessel (unit: m), η is the blood viscosity (unit: Pa·s), L is the blood vessel length (unit: m), and ΔP is the pressure difference (unit: Pa). The flow sensor real-time collects the blood flow data as Q 实际 , and transmits it to the MCU control module. The MCU control module transmits Q 实际 to compare with the preset normal arterial flow range Q 正常 . If Q 实际 deviates from the range of Q 正常 , the MCU control module adjusts the release rate of the heparin coating through a specific algorithm. Let the initial value of the release rate of the heparin coating be R0 (unit: mg / s), and the flow deviation ratio is:

[0058]

[0059] Then the adjusted release rate R of the heparin coating can be calculated by the following formula:

[0060] R = R0(1 + k)

[0061] The pressure sensor transmits the monitored arterial blood pressure data to the MCU control module. The MCU control module analyzes and processes the blood pressure data and real-time displays the blood pressure value and the flow value on the display screen.

[0062] Such as Figure 7As shown, the intelligent monitor 3 further includes an ultrasonic imaging module. The ultrasonic imaging module is connected to the MCU control module. The ultrasonic imaging module integrates a microprocessor, which is connected to a micro ultrasonic transducer array unit, a signal processing unit, an imaging unit, and an image transmission unit. The micro ultrasonic transducer array unit is integrated at the end of one end of the guide wire 32 inserted into the monitoring channel 121. The ultrasonic transducer array unit is used to transmit and receive high-frequency ultrasonic signals. The signal processing unit is used to process and convert the collected signals for convenient cooperation with the imaging unit. The imaging unit is used to perform imaging processing on the signals collected by the signal processing unit. The image transmission unit is used to connect to a display screen to facilitate the real-time presentation of the image of the blood vessels around the steel needle 23.

[0063] As Figure 1 and Figure 8 shown, it further includes a needle cap 4. The needle cap 4 is sleeved outside the catheter 12, and a sealing joint 41 is provided at the top of the needle cap 4. The sealing joint 41 is sleeved at the bottom of the needle base 1. The sealing joint 41 seals the between the needle cap 4 and the needle base 1. This structure can effectively protect the catheter 12 and the steel needle 23, avoid contamination of the catheter 12 and the steel needle 23, and thus reduce the infection risk of patients.

[0064] Working principle: During use, the intelligent monitor 3 is installed inside the monitoring channel 121 of the catheter 12 according to the usage requirements; then the intelligent monitor 3 is connected to the display screen; after that, medical staff can use this catheterization needle to puncture the artery of the patient. During the puncture process, the puncture angle and depth during puncture can be observed on the display screen through the ultrasonic imaging module, so as to judge whether the steel needle 23 can accurately penetrate into the artery of the patient; when the steel needle 23 penetrates into the artery blood vessel, the catheter 12 will also follow the steel needle 23 into the artery blood vessel. Then the medical staff pulls out the steel needle 23 and fixes the needle base 1 and the connecting seat 18 through a fixing patch; and the intelligent monitor 3 can accurately measure the blood pressure and blood flow through the pressure sensor and the flow sensor, which is convenient for medical staff to understand the patient's physical condition in real time. When medical staff need to inject medicine into the patient's artery or take samples from the artery, they can use the connecting seat 18 corresponding to the branch pipe 14 communicating with the diversion channel 122. This not only ensures the quality of the patient, but also does not affect the monitoring of the patient's artery blood vessel by the intelligent monitor 3.

[0065] In summary, compared with the prior art, in the present application, two branch pipes 14 are provided on the catheter 12 seat, and a flexible pipe 17 is connected to each branch pipe 14. A connection seat 18 is provided at the end of the flexible pipe 17. One of the connection seats 18 is connected to an intelligent monitor 3. A pressure sensor and a flow sensor are integrated in the intelligent monitor 3. The blood pressure of the patient can be detected by the pressure sensor, and the blood flow of the artery can be monitored by the flow sensor. At the same time, an ultrasonic imaging module is provided at the end of the intelligent monitor 3. Through the ultrasonic imaging module, the vascular tissue can be imaged and observed during the puncture weighing, which also facilitates observing the needle tube orientation and facilitating the smooth puncture of the needle tube into the artery of the patient.

[0066] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An intra-arterial puncture catheter needle for critically ill patients, characterized in that: include: A needle seat (1), wherein a catheter (12) is provided at the bottom end of the needle seat (1), and branch tubes (14) are symmetrically provided on both sides of the needle seat (1), the inner side of the catheter (12) is divided into a monitoring channel (121) and a diversion channel (122), the monitoring channel (121) and the diversion channel (122) are respectively communicated with the two branch tubes (14), and a puncture channel (123) is provided on the inner side of the needle seat (1), and the diversion channel (122) extends upward to communicate with the puncture channel (123); A puncture head (2), wherein a steel needle (23) is provided at the bottom end of the puncture head (2), and the steel needle (23) is inserted into the puncture channel (123) from the top of the needle holder (1) and passes through the bottom end of the diversion channel (122); An intelligent monitoring instrument (3), wherein a guide wire (32) is provided at the top of the intelligent monitoring instrument (3), and the guide wire (32) passes through the branch pipe (14) into the interior of the monitoring channel (121).

2. The intra-arterial puncture catheterization needle for critically ill patients according to claim 1, characterized in that: A white isolation plug is provided at the top of the needle seat (1), a plug interface (16) is provided at the top of the needle seat (1), a sleeve joint (11) is provided at the connection between the needle seat (1) and the catheter (12), a throttle valve (15) is provided on the side of the branch pipe (14), and a hose (17) is provided at the top of each branch pipe (14), a connecting seat (18) is provided at the bottom end of the hose (17), an end cap (181) is provided on the side of the connecting seat (18), and a connector (182) is provided at the bottom end of the connecting seat (18).

3. The intra-arterial puncture catheterization needle for critically ill patients according to claim 2, characterized in that: A side hole (13) is provided at the bottom of the side of the catheter (12); the catheter (12) is made of a medical polymer material with biocompatibility and flexibility, the outer wall of the catheter (12) is provided with a heparin coating, and the monitoring channel (121) and the diversion channel (122) inside the catheter (12) do not interfere with each other.

4. The intra-arterial puncture catheterization needle for critically ill patients according to claim 2, characterized in that: A plug (21) is provided at the connection point between the puncture head (2) and the steel needle (23), and the plug (21) is inserted into the plug interface (16) at the top of the needle seat (1); the steel needle (23) passes through the white isolation plug and is inserted into the diversion channel (122), and a needle holding handle (22) is provided on the side of the puncture head (2).

5. The intra-arterial puncture catheterization needle for critically ill patients according to claim 3, characterized in that: The connecting portion between the intelligent monitor (3) and the guide wire (32) is provided with an insertion column (31), the insertion column (31) is inserted into the interior of the connecting seat (18), and the intelligent monitor (3) is threadedly connected to the connecting head (182); a connecting wire (33) is provided at the bottom of the intelligent monitor (3), and a connecting plug (34) is provided at the end of the connecting wire (33), and the connecting wire (33) cooperates with the connecting plug (34) to be connected to the display screen.

6. The intra-arterial puncture catheterization needle for critically ill patients according to claim 5, characterized in that: The intelligent monitor (3) has an MCU control module integrated therein, and the MCU control module is connected to a pressure sensor and a flow sensor. The flow sensor is arranged at the bottom of the guide wire (32) and is used to monitor the blood flow in the artery after the guide wire (32) is inserted into the artery. The pressure sensor is arranged on the guide wire (32), and the guide wire (32) provided with the pressure sensor is placed inside the monitoring channel (121) and is used to monitor the arterial blood pressure in real time.

7. The intra-arterial puncture catheterization needle for critically ill patients according to claim 6, characterized in that: The specific calculation method of the flow sensor to measure the blood flow in the artery is as follows: The blood flow Q in the artery can be expressed as: Where r is the arterial radius (unit: m), η is the blood viscosity (unit: Pa·s), L is the blood vessel length (unit: m), and ΔP is the pressure difference (unit: Pa).

8. The intra-arterial puncture catheterization needle for critically ill patients according to claim 7, characterized in that: The flow sensor collects blood flow data in real time as Q 实际 and pass it to the MCU control module, which will Q 实际 Compared with the preset normal arterial flow range Q 正常 For comparison, if Q 实际 Deviation from Q 正常 The MCU control module adjusts the release rate of the heparin coating through a specific algorithm. The initial value of the release rate of the heparin coating is set to R0 (unit: mg / s), and the flow deviation ratio is: The adjusted heparin coating release rate R can be calculated by the following formula: R=R0(1+k) The pressure sensor transmits the monitored arterial blood pressure data to the MCU control module, and the MCU control module analyzes and processes the blood pressure data and displays the blood pressure value and flow value in real time on the display screen.

9. The intra-arterial puncture catheterization needle for critically ill patients according to claim 7, characterized in that: The intelligent monitor (3) also includes an ultrasonic imaging module, which is connected to the MCU control module. The ultrasonic imaging module is integrated with a microprocessor, and the microprocessor is connected to a miniature ultrasonic transducer array unit, a signal processing unit, an imaging unit and an image transmission unit. The miniature ultrasonic transducer array unit is integrated at the end of the guide wire (32) inserted into the monitoring channel (121). The ultrasonic transducer array unit is used to transmit and receive high-frequency ultrasonic signals. The signal processing unit is used to process and convert the collected signals to facilitate use with the imaging unit. The imaging unit is used to perform imaging processing on the signals collected by the signal processing unit. The image transmission unit is used to connect to a display screen to facilitate real-time presentation of images of blood vessels around the steel needle (23).

10. An intra-arterial puncture catheterization needle for critically ill patients according to any one of claims 1 to 9, characterized in that: The needle cap (4) is also included. The needle cap (4) is sleeved on the outside of the catheter (12). A sealing joint (41) is provided at the top of the needle cap (4). The sealing joint (41) is sleeved on the bottom of the needle seat (1). The sealing joint (41) performs a sealing process between the needle cap (4) and the needle seat (1).

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