A blood purification model human

Abstract

The present invention relates to a blood purification model human. Outer end plugging heads are sleeved on the hemodialysis catheter interfaces of the right subclavian vein, the right internal jugular vein, the right femoral vein, and the two arteriovenous anastomosis internal fistula interfaces. A controller is installed at a position corresponding to the automatic constant pressure micro water pump inside the simulation model human body. A control operation panel is fixedly installed at a position corresponding to the controller on the outer side of the simulation model human body. A loudspeaker is fixedly installed inside the head of the simulation model human body. The loudspeaker and the automatic constant pressure micro water pump are electrically connected to the controller through wires respectively, and the controller is electrically connected to the control operation panel through a wire; it realizes a comprehensive understanding and mastery of the overall process of blood purification, and ultimately enables the operator to have the ability to handle various problems that occur during the blood purification cycle.

Description

Technical Field

[0001] The present invention relates to the field of medical teaching, and particularly to a blood purification model human. Background Art

[0002] Blood purification refers to the process of using certain instruments and equipment to draw a patient's blood out of the body, removing certain metabolic wastes or toxic substances in the body through a certain device, and then returning the blood to the body. The existing technologies of blood purification include: hemodialysis, hemofiltration and hemodiafiltration, hemoperfusion, plasma exchange, immunoadsorption, continuous renal replacement therapy, sustained low-efficiency hemodialysis, etc.

[0003] Currently, in the clinical practice of blood purification, the current situation of blood purification practitioners such as medical college teachers, medical college students or intern doctors, and intern nurses in clinical teaching demonstrations and students' practical skill operations is as follows: they all conduct practical skill operations according to the real patient situation, need to demonstrate on real patients, and the demonstration of external blood purification equipment must rely on the patient entity for operation, and there is no special model human and equipment for blood purification. The above current situation has certain defects, which are mainly reflected in: First, the demonstration of only external blood purification equipment is one-sided. Skill training personnel can only master the operation process of external blood purification equipment, and cannot directly observe the overall circulation treatment process of blood purification, which has certain limitations for later operations in practice, cannot comprehensively understand and master the overall process of blood purification, and cannot handle many problems that occur during the blood purification treatment process; Second, operating and demonstrating on real patients is likely to cause fear in patients, and the cooperation and support of the patients' families are required. Often, during the demonstration process of real patients, affected by these factors, the overall demonstration process and demonstration effect are restricted, and the demonstration cannot be carried out in all directions, and at the same time, skill training personnel also do not have the opportunity to learn by hands-on operation; Third, in the traditional blood purification teaching or demonstration mode, the initiative of skill training personnel is relatively weak, and what they master is mostly theoretical knowledge, which is not conducive to the innovation and attempt of skill training personnel. In summary, the existing teaching and training status seriously restricts the innovation and development of blood purification.

[0004] Therefore, it has a broad market prospect to produce a blood purification model human with simple structure, convenient operation, high working and running efficiency, comprehensive display, strong initiative, high intelligence, diverse functions, wide coverage of blood purification teaching, conducive to innovation and attempt, realistic skill simulation, and strong overall intuitiveness. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a blood purification model human with a simple structure, convenient operation, high working and running efficiency, comprehensive display, strong active operability, high intelligence level, diverse functions, wide coverage of blood purification teaching, conducive to innovation and experimentation, realistic skill simulation, and strong overall intuitiveness, which is used to overcome the defects in the prior art.

[0006] The technical solution of the present invention is realized as follows: A blood purification model human includes a simulation model human body. A liquid storage sac is installed inside the simulation model human body. The left side of the liquid storage sac is connected to a simulated arterial pipeline. The simulated arterial pipeline is connected to a simulated venous pipeline through an automatic constant pressure micro water pump. The simulated venous pipeline is connected to the right side of the liquid storage sac. A right subclavian vein hemodialysis catheter interface is opened at the right collarbone position of the simulation model human body. A right internal jugular vein hemodialysis catheter interface is opened at the right neck position of the simulation model human body. A right femoral vein hemodialysis catheter interface is opened at the position above the right leg of the simulation model human body. Two arteriovenous fistula openings are opened at the position of the left forearm near the wrist of the simulation model human body. The inner end of the right subclavian vein hemodialysis catheter interface is connected to the simulated venous pipeline through a right subclavian vein pipeline. The inner end of the right internal jugular vein hemodialysis catheter interface is connected to the simulated venous pipeline through a right internal jugular vein pipeline. The inner end of the right femoral vein hemodialysis catheter interface is connected to the simulated venous pipeline through a right femoral vein pipeline. One of the arteriovenous fistula interfaces is connected to the simulated arterial pipeline through a radial artery pipeline. The other arteriovenous fistula interface is connected to the simulated venous pipeline through a cephalic vein pipeline. The cephalic vein pipeline is connected to the radial artery pipeline through an arteriovenous fistula pipeline. Outer end plugs are sleeved on the right subclavian vein hemodialysis catheter interface, the right internal jugular vein hemodialysis catheter interface, the right femoral vein hemodialysis catheter interface, and the two arteriovenous fistula interfaces. A controller is installed inside the simulation model human body at a position corresponding to the automatic constant pressure micro water pump. A control operation panel is fixedly installed outside the simulation model human body at a position corresponding to the controller. A loudspeaker is fixedly installed inside the head of the simulation model human body. The loudspeaker and the automatic constant pressure micro water pump are respectively electrically connected to the controller through wires. The controller is electrically connected to the control operation panel through a wire.

[0007] The liquid storage bladder is a strip-shaped bladder structure with a capacity of 4,200 to 4,800 milliliters. A liquid filling tube is provided on the top surface of the liquid storage bladder. A hole is provided on the body of the simulation model human corresponding to the position of the liquid filling tube. The upper part of the liquid filling tube is fixedly installed in this hole. The outer end of the liquid filling tube is installed with an anti-reflux medical connecting tube by means of threaded connection. The simulated arterial pipeline and the simulated venous pipeline are symmetrically distributed on both sides of the front end of the liquid storage bladder. The automatic constant pressure micro water pump is arranged at the far rear end of the connection position between the simulated arterial pipeline and the simulated venous pipeline and the liquid storage bladder. The simulated arterial pipeline, the simulated venous pipeline and the liquid storage bladder form a closed loop through the automatic constant pressure micro water pump.

[0008] The right subclavian vein hemodialysis catheter interface, the right internal jugular vein hemodialysis catheter interface, the right femoral vein hemodialysis catheter interface and the two arteriovenous fistula anastomosis interfaces are all circular tube structures. Interface installation holes for installing the five interfaces are provided on the body of the simulation model human. The right subclavian vein hemodialysis catheter interface, the right internal jugular vein hemodialysis catheter interface, the right femoral vein hemodialysis catheter interface and the two arteriovenous fistula anastomosis interfaces are respectively installed in the five interface installation holes by means of pasting. Outer end plug head internal thread layers are provided on the inner walls of the outer ends of the right subclavian vein hemodialysis catheter interface, the right internal jugular vein hemodialysis catheter interface, the right femoral vein hemodialysis catheter interface and the two arteriovenous fistula anastomosis interfaces. The outer end plug head includes an outer end plug head limiting tube. The inner end of the outer end plug head limiting tube is fixedly connected to the outer end plug head connecting tube. The outer end of the outer end plug head limiting tube is fixedly connected to the outer end plug head heparin cap head. An outer end plug head external thread layer matching with the outer end plug head internal thread layer is provided on the outer end of the outer end plug head connecting tube.

[0009] An opening and closing connection piece is provided on the back of the body of the simulation model human. The opening and closing connection piece is in the shape of an arc-shaped sheet structure. One side of the opening and closing connection piece is an integral structure with the body of the simulation model human. The other side of the opening and closing connection piece is connected to the body of the simulation model human through a zipper tooth connection body. A pull head is installed on the zipper tooth connection body. The width of the opening and closing connection piece is not less than the width of the liquid storage bladder. A sound outlet hole is provided on the head of the body of the simulation model human corresponding to the installation position of the speaker. The control operation panel is a rectangular plate structure with arc-shaped ends at both ends. An external power cord, a power switch and an automatic constant pressure micro water pump switch are fixedly installed on the control operation panel. The controller is connected to the external power cord through the power switch. The automatic constant pressure micro water pump is connected to the controller through the automatic constant pressure micro water pump switch.

[0010] The arteriovenous fistula conduit described above is a U-shaped tubular structure made of metal. One side of the arteriovenous fistula conduit extends 3 to 5 centimeters into the radial artery conduit, and the other end of the arteriovenous fistula conduit extends 3 to 5 centimeters into the cephalic vein conduit. On the inner sides of both ends of the arteriovenous fistula conduit, two arteriovenous fistula interface installation holes for installing two arteriovenous fistula interfaces are respectively opened. The two arteriovenous fistula interfaces are respectively fixedly installed in the two arteriovenous fistula interface installation holes, and the outer ends of the arteriovenous fistula interfaces extend to a position 1 centimeter outside the body of the simulation model human.

[0011] Non-contact ultrasonic flow sensors are installed on the right subclavian vein conduit, the right internal jugular vein conduit, and the right femoral vein conduit described above. The three non-contact ultrasonic flow sensors are respectively connected to the controller through wires, and the three non-contact ultrasonic flow sensors all adopt non-contact ultrasonic flow sensors of German model SONOFLOE CO55.

[0012] A reinforcing connection ring is fixedly installed at the outer end of the liquid filling tube. The inner side of the reinforcing connection ring is an integral structure with the outer wall of the liquid filling tube. The bottom of the liquid filling tube is communicated with the liquid storage bag. An anti-reflux medical connection pipe internal thread layer is provided on the inner wall of the liquid filling tube. The anti-reflux medical connection pipe includes an anti-reflux connection main pipe. A liquid filling tube connection head is fixedly installed on one side of the anti-reflux connection main pipe. An anti-reflux connection extension pipe is fixedly installed on the other side of the anti-reflux connection main pipe. One end of the anti-reflux connection extension pipe is connected with an anti-reflux joint. An anti-reflux medical connection pipe external thread layer that matches the anti-reflux medical connection pipe internal thread layer is provided on the liquid filling tube connection head.

[0013] The present invention has the following positive effects: First, the product is easy to operate, has high working and operating efficiency, changes the current status of blood purification research, provides a special model for blood purification research and learning, and can realize research and learning without demonstration on real patients. It can be trained and operated in conjunction with external blood purification equipment, and can be fully practiced. Not only can the overall circulation process of blood purification be observed intuitively, but also after time training with external purification equipment, practical operation experience in dealing with later problems can be obtained, and a comprehensive understanding and mastery of the overall process of blood purification can be achieved, which will ultimately enable the operator to have the ability to deal with problems that may occur during the blood purification circulation process. Secondly, this product can be free from the inconvenience of operating and demonstrating on real patients, avoiding the psychological harm and concerns caused to patients in real demonstrations, and at the same time ensuring the comprehensiveness of the demonstration process and demonstration effect, without worrying about the physical limitations of patients who have undergone blood purification, achieving a full range of demonstration effects, and allowing learners to actually operate; thirdly, this product has changed the traditional blood purification teaching or demonstration mode, and the active operability of practical trainees has been enhanced, not just staying at the theoretical level, meeting the active operation and exploration needs of practical trainees, and is conducive to the innovation and bold attempts of practical trainees. It is conducive to the innovation and development of blood purification skills. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0015] Figure 2 It is a rear structural schematic diagram of the present invention.

[0016] Figure 3 It is a schematic diagram of the internal structure of the present invention.

[0017] Figure 4 It is a schematic diagram of the structure of the anti-reflux medical connecting tube of the present invention.

[0018] Figure 5 It is a schematic diagram of the structure of the outer end plugging head of the present invention. DETAILED DESCRIPTION

[0019] like Figure 1 , 2As shown in Figures 3, 4, and 5, a blood purification model human includes a simulation model human body 1. A liquid storage bladder 3 is installed inside the simulation model human body 1. A simulated arterial pipeline 4 is connected to the left side of the liquid storage bladder 3. The simulated arterial pipeline 4 is connected to a simulated venous pipeline 6 through an automatic constant pressure micro water pump 5. The simulated venous pipeline 6 is connected to the right side of the liquid storage bladder 3. A right subclavian vein hemodialysis catheter interface 8 is provided at the right collarbone position of the simulation model human body 1. A right internal jugular vein hemodialysis catheter interface 9 is provided at the right neck position of the simulation model human body 1. A right femoral vein hemodialysis catheter interface 10 is provided above the right leg of the simulation model human body 1. Two arteriovenous fistula openings 11 are provided near the wrist of the left forearm of the simulation model human body 1. The inner end of the right subclavian vein hemodialysis catheter interface 8 is connected to the simulated venous pipeline 6 through a right subclavian vein pipeline 12. The inner end of the right internal jugular vein hemodialysis catheter interface 9 is connected to the simulated venous pipeline 6 through a right internal jugular vein pipeline 13. The inner end of the right femoral vein hemodialysis catheter interface 10 is connected to the simulated venous pipeline 6 through a right femoral vein pipeline 14. One of the arteriovenous fistula interfaces 11 is connected to the simulated arterial pipeline 4 through a radial artery pipeline 16. The other arteriovenous fistula interface 11 is connected to the simulated venous pipeline 6 through a cephalic vein pipeline 15. The cephalic vein pipeline 15 is connected to the radial artery pipeline 16 through an arteriovenous fistula pipeline 17. Outer end plugs 20 are sleeved on the right subclavian vein hemodialysis catheter interface 8, the right internal jugular vein hemodialysis catheter interface 9, the right femoral vein hemodialysis catheter interface 10, and the two arteriovenous fistula interfaces 11. A controller 7 is installed inside the simulation model human body 1 at a position corresponding to the automatic constant pressure micro water pump 5. A control operation panel 23 is fixedly installed outside the simulation model human body 1 at a position corresponding to the controller 7. A speaker 18 is fixedly installed inside the head of the simulation model human body 1. The speaker 18 and the automatic constant pressure micro water pump 5 are electrically connected to the controller 7 through wires respectively. The controller 7 is electrically connected to the control operation panel 23 through a wire.

[0020] The liquid storage bladder 3 is a long strip-shaped bladder structure. The capacity of the liquid storage bladder 3 is 4200 milliliters to 4800 milliliters. A liquid filling tube 2 is provided on the top surface of the liquid storage bladder 3. A hole is provided on the simulation model human body 1 at a position corresponding to the liquid filling tube 2. The upper part of the liquid filling tube 2 is fixedly installed in this hole. The outer end of the liquid filling tube 2 is installed with an anti-reflux medical connection tube 19 by means of threaded connection. The simulated arterial pipeline 4 and the simulated venous pipeline 6 are symmetrically distributed on both sides of the front end of the liquid storage bladder 3. The setting position of the automatic constant pressure micro water pump 5 is located at the far rear end of the connection position of the simulated arterial pipeline 4 and the simulated venous pipeline 6 with the liquid storage bladder 3. The simulated arterial pipeline 4, the simulated venous pipeline 6, and the liquid storage bladder 3 form a closed loop through the automatic constant pressure micro water pump 5.

[0021] The right subclavian vein hemodialysis catheter interface 8, right internal jugular vein hemodialysis catheter interface 9, right femoral vein hemodialysis catheter interface 10, and two arteriovenous fistula interfaces 11 are all tubular structures. On the body 1 of the simulation model human, there are interface mounting holes for installing the five interfaces. The right subclavian vein hemodialysis catheter interface 8, right internal jugular vein hemodialysis catheter interface 9, right femoral vein hemodialysis catheter interface 10, and two arteriovenous fistula interfaces 11 are respectively installed in the five interface mounting holes by pasting. On the inner wall of the outer ends of the right subclavian vein hemodialysis catheter interface 8, right internal jugular vein hemodialysis catheter interface 9, right femoral vein hemodialysis catheter interface 10, and two arteriovenous fistula interfaces 11, there are outer end plug head internal thread layers. The outer end plug head 20 includes an outer end plug head limiting tube 20-1. The inner end of the outer end plug head limiting tube 20-1 is fixedly connected to the outer end plug head connecting tube 20-2. The outer end of the outer end plug head limiting tube 20-1 is fixedly connected to the outer end plug head heparin cap 20-3. On the outer end of the outer end plug head connecting tube 20-2, there is an outer end plug head external thread layer 20-4 that matches the outer end plug head internal thread layer.

[0022] On the back of the body 1 of the simulation model human, there is an opening and closing connection piece 27. The shape of the opening and closing connection piece 27 is an arc-shaped sheet structure. One side of the opening and closing connection piece 27 is an integral structure with the body 1 of the simulation model human. The other side of the opening and closing connection piece 27 is connected to the body 1 of the simulation model human through a zipper tooth connection body 28. A pull head 29 is installed on the zipper tooth connection body 28. The width of the opening and closing connection piece 27 is not less than the width of the liquid storage bladder 3. On the head of the body 1 of the simulation model human, there is a sound outlet hole 22 corresponding to the installation position of the speaker 18. The control operation panel 23 is a rectangular plate structure with arc-shaped ends at both ends. An external power cord 26, a power switch 24, and an automatic constant pressure micro water pump switch 25 are fixedly installed on the control operation panel 23. The controller 7 is connected to the external power cord 26 through the power switch 24. The automatic constant pressure micro water pump 5 is connected to the controller 7 through the automatic constant pressure micro water pump switch 25. The arteriovenous fistula pipeline 17 is a U-shaped tubular structure made of metal. One side of the arteriovenous fistula pipeline 17 extends 3 to 5 centimeters into the radial artery pipeline 16. The other end of the arteriovenous fistula pipeline 17 extends 3 to 5 centimeters into the cephalic vein pipeline 15. At both inner ends of the arteriovenous fistula pipeline 17, there are two arteriovenous fistula interface mounting holes for installing the two arteriovenous fistula interfaces 11. The two arteriovenous fistula interfaces 11 are respectively fixedly installed in the two arteriovenous fistula interface mounting holes. The outer ends of the arteriovenous fistula interfaces 11 extend 1 centimeter outside the body 1 of the simulation model human.

[0023] Non-contact ultrasonic flow sensors 30 are installed on the right subclavian vein pipeline 12, the right internal jugular vein pipeline 13, and the right femoral vein pipeline 14. The three non-contact ultrasonic flow sensors 30 are respectively connected to the controller 7 through wires. The three non-contact ultrasonic flow sensors 30 are all non-contact ultrasonic flow sensors of the German model SONOFLOE CO55. The outer end of the liquid filling tube 2 is fixedly installed with a strengthened connection ring. The inner side of the strengthened connection ring is an integral structure with the outer wall of the liquid filling tube 2. The bottom of the liquid filling tube 2 is communicated with the liquid storage bladder 3. The inner wall of the liquid filling tube 2 is provided with an anti-reflux medical connection pipe internal thread layer. The anti-reflux medical connection pipe 19 includes an anti-reflux connection main pipeline 19-1. A liquid filling tube connector 19-2 is fixedly installed on one side of the anti-reflux connection main pipeline 19-1. An anti-reflux connection extension tube 19-4 is fixedly installed on the other side of the anti-reflux connection main pipeline 19-1. One end of the anti-reflux connection extension tube 19-4 is connected with an anti-reflux joint 19-5. An anti-reflux medical connection pipe external thread layer 19-3 that matches the anti-reflux medical connection pipe internal thread layer is provided on the liquid filling tube connector 19-2.

[0024] During the specific operation of this product, it can meet the establishment of blood purification pipelines at four positions. First, three temporary central venous catheter insertions are performed, namely subclavian vein catheter insertion, internal jugular vein catheter insertion, and femoral vein catheter insertion. The puncture point for internal jugular vein catheter insertion in this product is the right internal jugular vein catheter interface 9. Since the right internal jugular vein is almost in a straight line with the innominate vein and the superior vena cava, and the right pleural apex is lower than the left side, and there is no thoracic duct on the right side, the right internal jugular vein is cannulated dextrally. The puncture point for femoral vein catheter insertion in this product is selected at a position 2 - 3 cm below the inguinal ligament and 0.5 - 1 cm from the femoral artery, and its puncture point is the right femoral vein catheter interface 10. The puncture point for subclavian vein catheter insertion in this product is the right subclavian vein catheter interface 8, and the specific position is at the middle and outer one-third of the clavicle, 1 cm below the clavicle. During the specific operation, a double-lumen catheter 21 of the Mahurkar Qplus series is used. During the specific operation of the double-lumen catheter 21, it depends on the puncture position for liquid infusion and is correspondingly punctured into the right internal jugular vein catheter interface 9, the right femoral vein catheter interface 10, or the right subclavian vein catheter interface 8. Since outer end occlusion heads 20 are provided on the right internal jugular vein catheter interface 9, the right femoral vein catheter interface 10, or the right subclavian vein catheter interface 8, and outer end occlusion head heparin cap heads 20 - 3 are provided on the outer end occlusion heads 20, the inner end of the puncture body of the double-lumen catheter 21 directly punctures and pierces through the outer end occlusion head heparin cap heads 20 - 3 and enters the corresponding right internal jugular vein pipeline 13, right subclavian vein pipeline 12, and right femoral vein pipeline 14. A blood purification device is connected to the outside of the double-lumen catheter 21, the power switch 24 is turned on, and the automatic constant pressure micro water pump switch 25 is turned on. When a liquid flow circulation is formed in the right internal jugular vein pipeline 13, the right subclavian vein pipeline 12, or the right femoral vein pipeline 14, the corresponding non-contact ultrasonic flow sensor 30 installed on its upper part senses the liquid flow information and transmits the flow information to the controller 7. The controller drives the speaker 18 to play the puncture voice information of the puncture point position according to the sensing information transmitted back by different non-contact ultrasonic flow sensors 30.

[0025] A microphone is provided on one side of the speaker 18 below the sound outlet hole 22. The microphone is connected to the controller 7 through a wire. A SIM card module, a WIFI module, and an intelligent voice dialogue module are installed in the controller 7 to achieve intelligent networked voice dialogue and enhance the intelligence level of the product.

[0026] The liquid storage bladder contains a liquid dyed with red pigment to simulate blood circulation. For the convenience of detection by external devices, when filling the liquid, the removal operation is carried out through an anti-reflux medical connecting tube, and the dyed liquid is directly filled into the liquid storage bladder. Alternatively, the liquid can be filled after external pressure connection through the anti-reflux medical connecting tube. Meanwhile, during the process of blood purification, a supplementary liquid can be externally connected through the anti-reflux medical connecting tube 19 to supplement the liquid required during blood purification. The anti-reflux medical connecting tube is used to ensure that the filled supplementary liquid will not flow out in the reverse direction, guaranteeing the smooth implementation of the blood purification process.

[0027] During the specific operation process, to ensure the stability of the product, a fixed binding rope is set inside the simulation model human body 1 at the corresponding position of the liquid storage bladder 3. One end of the rope is fixedly connected to the simulation model human body 1, and the other end of the rope is connected to the simulation model human body 1 by means of Velcro or snap connection. The liquid storage bladder 3 is fixedly installed inside the rope. To increase the operability of the product, all the connecting pipeline interfaces and control buttons are set on the front of the simulation model human body 1 to ensure the convenience during operation and to prevent misoperation caused by extrusion. The arteriovenous fistula internal fistula pipeline 17 is a U-shaped tubular structure made of metal. One side of the arteriovenous fistula internal fistula pipeline 17 extends 3 to 5 centimeters into the radial artery pipeline 16, and the other end of the arteriovenous fistula internal fistula pipeline 17 extends 3 to 5 centimeters into the cephalic vein pipeline 15. At the inner sides of both ends of the arteriovenous fistula internal fistula pipeline 17, two arteriovenous fistula interface installation holes for installing two arteriovenous fistula interfaces 11 are respectively opened. The two arteriovenous fistula interfaces 11 are respectively fixedly installed in the two arteriovenous fistula interface installation holes. The outer ends of the arteriovenous fistula interfaces 11 extend to a position 1 centimeter outside the simulation model human body 1. After installing the outer end plug 20, it can be used for repeated punctures and ensure that the radial artery pipeline 16 and the cephalic vein pipeline 15 will not be damaged after puncture. The intervention of the double-lumen catheter 21 causes minimal damage to the right internal jugular vein pipeline 13, the right subclavian vein pipeline 12, and the right femoral vein pipeline 14, which can be ignored. The right internal jugular vein pipeline 13, the right subclavian vein pipeline 12, the right femoral vein pipeline 14, the radial artery pipeline 16, and the cephalic vein pipeline 15 of the product are all made of high-strength plastic hoses. The capacity of the liquid storage bladder 3 is 4200 to 4800 milliliters, simulating the normal blood volume of an adult. Meanwhile, the automatic constant pressure micro water pump 5 continuously provides a circulating pressure to simulate the heart's blood supply pressure, ensuring the necessary power source for blood purification during the circulation process.

[0028] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in any other form. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution content of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A blood purification model human, comprising a simulation model human body (1), characterized in that: A liquid storage bladder (3) is installed inside the simulation model human body (1). The left side of the liquid storage bladder (3) is connected to a simulated arterial pipeline (4). The simulated arterial pipeline (4) is connected to a simulated venous pipeline (6) through an automatic constant pressure micro water pump (5). The simulated venous pipeline (6) is connected to the right side of the liquid storage bladder (3). A right subclavian vein hemodialysis catheter interface (8) is provided at the right clavicle position of the simulation model human body (1). A right internal jugular vein hemodialysis catheter interface (9) is provided at the right neck position of the simulation model human body (1). A right femoral vein hemodialysis catheter interface (10) is provided above the right leg of the simulation model human body (1). Two arteriovenous fistula openings (11) are provided near the wrist of the left forearm of the simulation model human body (1). The inner end of the right subclavian vein hemodialysis catheter interface (8) is connected to the simulated venous pipeline (6) through a right subclavian vein pipeline (12). The inner end of the right internal jugular vein hemodialysis catheter interface (9) is connected to the simulated venous pipeline (6) through a right internal jugular vein pipeline (13). The inner end of the right femoral vein hemodialysis catheter interface (10) is connected to the simulated venous pipeline (6) through a right femoral vein pipeline (14). One of the arteriovenous fistula interfaces (11) is connected to the simulated arterial pipeline (4) through a radial artery pipeline (16). The other arteriovenous fistula interface (11) is connected to the simulated venous pipeline (6) through a cephalic vein pipeline (15). The cephalic vein pipeline (15) is connected to the radial artery pipeline (16) through an arteriovenous fistula pipeline (17). Outer end plugs (20) are sleeved on the right subclavian vein hemodialysis catheter interface (8), the right internal jugular vein hemodialysis catheter interface (9), the right femoral vein hemodialysis catheter interface (10), and the two arteriovenous fistula interfaces (11). A controller (7) is installed inside the simulation model human body (1) at a position corresponding to the automatic constant pressure micro water pump (5). A control operation panel (23) is fixedly installed outside the simulation model human body (1) at a position corresponding to the controller (7). A speaker (18) is fixedly installed inside the head of the simulation model human body (1). The speaker (18) and the automatic constant pressure micro water pump (5) are respectively electrically connected to the controller (7) through wires. The controller (7) is electrically connected to the control operation panel (23) through a wire.

2. The blood purification model human according to claim 1, characterized in that: The described liquid storage bladder (3) is a strip-shaped bladder structure. The capacity of the liquid storage bladder (3) is 4200 to 4800 milliliters. A liquid filling tube (2) is provided on the top surface of the liquid storage bladder (3). A hole is provided on the body (1) of the simulation model human corresponding to the position of the liquid filling tube (2). The upper part of the liquid filling tube (2) is fixedly installed in this hole. The outer end of the liquid filling tube (2) is installed with an anti-reflux medical connecting tube (19) by means of threaded connection. The simulated arterial pipeline (4) and the simulated venous pipeline (6) are symmetrically distributed on both sides of the front end of the liquid storage bladder (3). The automatic constant pressure micro water pump (5) is arranged at the far rear end of the connection position between the simulated arterial pipeline (4) and the simulated venous pipeline (6) and the liquid storage bladder (3). The simulated arterial pipeline (4), the simulated venous pipeline (6) and the liquid storage bladder (3) form a closed loop through the automatic constant pressure micro water pump (5).

3. The blood purification model human according to claim 1, characterized in that: The right subclavian vein hemodialysis catheter interface (8), the right internal jugular vein hemodialysis catheter interface (9), the right femoral vein hemodialysis catheter interface (10) and the two arteriovenous fistula anastomosis interfaces (11) are all tubular structures. Interface installation holes for installing the five interfaces are provided on the body (1) of the simulation model human. The right subclavian vein hemodialysis catheter interface (8), the right internal jugular vein hemodialysis catheter interface (9), the right femoral vein hemodialysis catheter interface (10) and the two arteriovenous fistula anastomosis interfaces (11) are respectively installed in the five interface installation holes by means of pasting. Outer end plug head internal thread layers are provided on the inner walls of the outer ends of the right subclavian vein hemodialysis catheter interface (8), the right internal jugular vein hemodialysis catheter interface (9), the right femoral vein hemodialysis catheter interface (10) and the two arteriovenous fistula anastomosis interfaces (11). The outer end plug head (20) includes an outer end plug head limiting tube (20-1). The inner end of the outer end plug head limiting tube (20-1) is fixedly connected to the outer end plug head connecting tube (20-2). The outer end of the outer end plug head limiting tube (20-1) is fixedly connected to the outer end plug head heparin cap head (20-3). An outer end plug head external thread layer (20-4) matching the outer end plug head internal thread layer is provided at the outer end of the outer end plug head connecting tube (20-2).

4. The blood purification model human according to claim 1, characterized in that: On the back of the described simulation model human body (1), there is an opening and closing connecting piece (27). The shape of the opening and closing connecting piece (27) is an arc-shaped sheet structure. One side of the opening and closing connecting piece (27) is an integral structure with the simulation model human body (1), and the other side of the opening and closing connecting piece (27) is connected to the simulation model human body (1) through a zipper tooth connecting body (28). A pull head (29) is installed on the zipper tooth connecting body (28). The width of the opening and closing connecting piece (27) is not less than the width of the liquid storage bladder (3). On the head of the simulation model human body (1), a sound outlet hole (22) is opened corresponding to the installation position of the speaker (18). The control operation board (23) is a rectangular plate structure with arc-shaped ends at both ends. An external power cord (26), a power switch (24), and an automatic constant pressure micro water pump switch (25) are fixedly installed on the control operation board (23). The controller (7) is connected to the external power cord (26) through the power switch (24). The automatic constant pressure micro water pump (5) is connected to the controller (7) through the automatic constant pressure micro water pump switch (25).

5. The blood purification model human according to claim 1, characterized in that: The described arteriovenous fistula internal fistula pipeline (17) is a U-shaped tubular structure made of metal. One side of the arteriovenous fistula internal fistula pipeline (17) extends 3 to 5 centimeters into the radial artery pipeline (16), and the other end of the arteriovenous fistula internal fistula pipeline (17) extends 3 to 5 centimeters into the cephalic vein pipeline (15). On the inner sides of both ends of the arteriovenous fistula internal fistula pipeline (17), two arteriovenous fistula internal fistula interface installation holes for installing two arteriovenous fistula internal fistula interfaces (11) are respectively opened. The two arteriovenous fistula internal fistula interfaces (11) are respectively fixedly installed in the two arteriovenous fistula internal fistula interface installation holes. The outer ends of the arteriovenous fistula internal fistula interfaces (11) extend to a position 1 centimeter outside the simulation model human body (1).

6. The blood purification model human according to claim 1, characterized in that: Non-contact ultrasonic flow sensors (30) are installed on the described right subclavian vein pipeline (12), right internal jugular vein pipeline (13), and right femoral vein pipeline (14). The three non-contact ultrasonic flow sensors (30) are respectively connected to the controller (7) through wires. The three non-contact ultrasonic flow sensors (30) are all non-contact ultrasonic flow sensors of the German model SONOFLOE CO55.

7. The blood purification model human according to claim 2, characterized in that: A reinforcing connection ring is fixedly installed at the outer end of the liquid filling pipe (2). The inner side of the reinforcing connection ring and the outer wall of the liquid filling pipe (2) are of an integral structure. The bottom of the liquid filling pipe (2) is communicated with the liquid storage bladder (3). An anti-reflux medical connection pipe internal thread layer is provided on the inner wall of the liquid filling pipe (2). The anti-reflux medical connection pipe (19) includes an anti-reflux connection main pipe (19-1). A liquid filling pipe connection head (19-2) is fixedly installed on one side of the anti-reflux connection main pipe (19-1). An anti-reflux connection extension pipe (19-4) is fixedly installed on the other side of the anti-reflux connection main pipe (19-1). An anti-reflux joint (19-5) is connected to one end of the anti-reflux connection extension pipe (19-4). An anti-reflux medical connection pipe external thread layer (19-3) that matches the anti-reflux medical connection pipe internal thread layer is provided on the liquid filling pipe connection head (19-2).

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