Strap type blood purification training device

Abstract

The utility model relates to a strap type blood purification training device, which is characterized in that a second fistulization capsule body is communicated with an internal jugular vein capsule body mounted on the front sides of a first neck protection belt and a second neck protection belt through a pipeline, and the internal jugular vein capsule body is communicated with a subclavian vein capsule body through a pipeline; the subclavian vein bag body is communicated with the femoral vein bag body through a pipeline, the femoral vein bag body is communicated with the circulating water bag through a pipeline, and an internal jugular vein puncture simulation cortex or an internal jugular vein double-cavity catheter is arranged on the outer side of the internal jugular vein bag body. A subclavian vein puncture simulation cortex or a subclavian vein double-cavity catheter is arranged on the outer side of the subclavian vein capsule, and a femoral vein puncture simulation cortex or a femoral vein double-cavity catheter is arranged on the outer side of the femoral vein capsule; the real person is used for implementing operation, the effect is more vivid, the visual sense effect of the user is more easily improved in the simulated training process, and the training operation effect is improved.

Description

Technical Field

[0001] The utility model relates to the field of medical teaching, in particular to a shoulder-type blood purification training device. Background Art

[0002] At present, there are special mannequins on the market for blood purification research and learning. For details, please refer to the Chinese patent: CN211087693U. This mannequin cooperates with the training operation of external blood purification equipment to achieve a comprehensive understanding and mastery of the overall process of blood purification. It simulates the human blood circulation system by forming a pathway with a liquid-containing bag, a simulated arterial line, an automatic constant-pressure micro-water pump, and a simulated venous line. It also provides a right subclavian vein hemodialysis catheter interface, a right internal jugular vein hemodialysis catheter interface, and a right femoral vein hemodialysis catheter interface. All interfaces are equipped with external end plugs for connecting to external blood purification equipment. An arteriovenous anastomosis fistula is also provided for use with the cephalic vein catheter and the radial artery catheter. The cephalic vein catheter is connected to the radial artery catheter through the arteriovenous anastomosis fistula.

[0003] The above-mentioned blood purification manikin still has certain defects in the training process, which are specifically manifested as follows: First, the traditional blood purification manikin adopts a model demonstration method, and its realism is not high. The manikin body has a fixed shape and style, and lacks realism during demonstration, display and simulation training, which reduces the effectiveness of simulation training. Secondly, the traditional blood purification manikin needs to make the manikin body after the mold is opened. The manikin body is made of hard or soft material structure, and the overall simulation of the real height of the human body is not conducive to transportation and transfer operations. In addition, the production cost is high, the consumables are expensive, and the transportation process takes up a lot of space, which increases transportation costs. Thirdly, the traditional blood purification manikin implements a fixed installation of the connecting pipes of the hemodialysis equipment, which cannot achieve the purpose of puncture and intubation training. Moreover, its pipe connections cannot be replaced, the service life is short, and the whole cannot be used after local damage occurs, resulting in a waste of resources. In addition, the traditional wearable manikin equipment has the defects of low overall fit and laborious and time-consuming wearing during use. Its wearing convenience is not high, and there is room for improvement.

[0004] In summary, a strap-type blood purification training device is provided, which has vivid display effects, high realism during use, and can be quickly operated by real people. It can realize real-person display, demonstration and auxiliary simulation training, can be used for hemodialysis intubation training, and can be connected to external equipment to demonstrate the hemodialysis process. It is convenient for reprinting and transportation, and has a long service life and can be partially replaced and repaired. It has broad market prospects. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the utility model provides a strap-type blood purification training device with vivid display effects, high realism during use, and real-person fast strap-type operation display. It can realize real-person display, demonstration and auxiliary simulation training, can be used for hemodialysis intubation training, and can be connected to external equipment to demonstrate the hemodialysis process. It is convenient for reprinting and transportation, and has a long service life and can be partially replaced and repaired, which is used to overcome the defects in the existing technology.

[0006] The technical solution of the utility model is achieved as follows: a strap-type blood purification training device comprises a display sheet, straps installed on both sides of the upper part of the display sheet, a first waist fixing belt and a second waist fixing belt installed on both sides of the lower part of the display sheet, a first neck protection belt and a second neck protection belt that cooperate with each other are provided on the top of the display sheet, a circulating water bag is fixedly installed on the front side of the display sheet, the circulating water bag is connected to the first fistula bag on the forearm cuff through a pipeline equipped with an automatic constant pressure micro water pump, and the first fistula bag is connected to the second fistula bag on the forearm cuff through a venous anastomosis internal fistula pipeline The second fistula balloon is connected with the internal jugular vein balloon installed on the front side of the first neck protection belt and the second neck protection belt through a pipeline, the internal jugular vein balloon is connected with the subclavian vein balloon through a pipeline, the subclavian vein balloon is connected with the femoral vein balloon through a pipeline, the femoral vein balloon is connected with the circulating water balloon through a pipeline, the outside of the internal jugular vein balloon is provided with an internal jugular vein puncture simulation cortex or an internal jugular vein double-lumen catheter, the outside of the subclavian vein balloon is provided with a subclavian vein puncture simulation cortex or a subclavian vein double-lumen catheter, the outside of the femoral vein balloon is provided with a femoral vein puncture simulation cortex or a femoral vein double-lumen catheter.

[0007] An outer display sheet protective layer is movably installed on the outer side of the display sheet layer through sticky hair and sticky hooks. The outer display sheet protective layer is provided with a first through-hole, a second through-hole and a third through-hole corresponding to the positions of the internal jugular vein sac, the subclavian vein sac and the femoral vein sac. The display sheet layer is made of a needle-proof insulating material. A control box is installed on the outer side of the automatic constant-pressure micro-water pump. A control switch electrically connected to the automatic constant-pressure micro-water pump is installed on the control box. The control switch is electrically connected to the external power cord socket.

[0008] The automatic constant pressure micro water pump is connected to the first fistula sac through the first internal fistula artificial blood vessel, the second fistula sac is connected to the internal jugular vein sac through the second internal fistula artificial blood vessel, the internal jugular vein sac is connected to the subclavian vein sac through the subclavian vein artificial blood vessel, and the subclavian vein sac is connected to the femoral vein sac through the femoral vein artificial blood vessel.

[0009] An extension connecting belt is fixedly installed on the outer end of the shoulder strap, and a connecting buckle is installed on the outer end of the extension connecting belt. A connecting buckle plug-in fastening joint that cooperates with the connecting buckle is fixedly installed on the outer side of the first waist fixing belt. The first waist fixing belt and the second waist fixing belt are connected to each other through a sticky hook layer and a sticky wool layer. The first neck protection belt and the second neck protection belt are connected to each other through a sticky hook layer and a sticky wool layer.

[0010] A water injection pipe with a one-way water inlet valve is arranged on the top of the circulating water bag, a sewage discharge pipe with an opening and closing valve is arranged on the bottom of the circulating water bag, and the forearm cuff is provided with mutually cooperating Velcro layers.

[0011] A control box is provided on the front side of the outer display sheet protective layer. The control box is mounted on a corresponding position outside the automatic constant pressure micro water pump. An electrically connected control switch is installed on the control box. The control switch is electrically connected to the external power cord socket.

[0012] The front side of the outer display sheet protective layer is provided with a water inlet and a sewage outlet, and the outer ends of the water inlet and the sewage outlet are both provided with plugs.

[0013] The inner ends of the first internal fistula artificial blood vessel and the second internal fistula artificial blood vessel are provided with a limiting fixing sleeve fixedly connected to the front side of the display layer.

[0014] The utility model has the following positive effects:

[0015] 1. This product adopts a strap-type structure to implement blood purification training operations. When in use, real people can wear it for demonstration, display and auxiliary simulation training operations. The overall realism is high. Using real people to implement the operation makes the effect more vivid. During the simulation training process, users can more easily improve their visual sensory effects and improve the effectiveness of the training operations.

[0016] 2. This product can be folded for storage and unfolded for real-life strap-type wearable simulation training. Due to the use of a soft structure, it is convenient for transportation and transfer operations, does not take up too much space, increases the overall carrying capacity, and reduces transportation costs.

[0017] 3. This product provides two ways to implement simulation training: puncture simulated cortex or double-lumen catheter. It can be used for puncture training and can also be directly connected to external equipment for display and demonstration. It has diverse functions and is efficient and convenient to operate.

[0018] 4. The display and demonstration effects of this utility model are more realistic. The pipelines are connected separately, and the components can be partially replaced separately after damage occurs. The use of capsules in multiple positions realizes the corresponding simulation of all hemodialysis positions. It has high reference value and wide coverage when used, and has good social and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the expanded state of the utility model.

[0020] Figure 2 This is one of the main structural diagrams of the present invention.

[0021] Figure 3 This is the second main structural diagram of the present invention.

[0022] Figure 4 This is one of the main structural diagrams of an embodiment of the present utility model.

[0023] Figure 5 This is the second main structural diagram of an embodiment of the present utility model.

[0024] Figure 6 It is a rear view structural schematic diagram of the present utility model. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] In the following description of the invention, it should be noted that the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation or be constructed or operated in a specific orientation. The term "connected" simply indicates a connection between devices and does not have any special meaning.

[0027] like Figure 1 、 2, 3, 4, 5, 6 show a strap-type blood purification training device, comprising a display sheet 1, straps 2 installed on both sides of the upper part of the display sheet 1, a first waist fixing belt 4 and a second waist fixing belt 5 installed on both sides of the lower part of the display sheet 1, the top of the display sheet 1 is provided with a first neck protection belt 3 and a second neck protection belt 6 that cooperate with each other, a circulating water bag 8 is fixedly installed on the front side of the display sheet 1, the circulating water bag 8 is connected to the first fistula bag 9 on the forearm cuff 24 through a pipeline equipped with an automatic constant pressure micro water pump 14, the first fistula bag 9 is connected to the second fistula bag 10 on the forearm cuff 24 through a venous anastomosis fistula pipeline 20, and the second fistula bag 1 0 is connected with the internal jugular vein sac 11 installed on the front side of the first neck protection belt 3 and the second neck protection belt 6 through a pipeline, the internal jugular vein sac 11 is connected with the subclavian vein sac 12 through a pipeline, the subclavian vein sac 12 is connected with the femoral vein sac 13 through a pipeline, the femoral vein sac 11 is connected with the circulating water sac 8 through a pipeline, the outside of the internal jugular vein sac 11 is provided with an internal jugular vein puncture simulation cortex 25 or an internal jugular vein double-lumen catheter 30, the outside of the subclavian vein sac 12 is provided with a subclavian vein puncture simulation cortex 26 or a subclavian vein double-lumen catheter 31, and the outside of the femoral vein sac 13 is provided with a femoral vein puncture simulation cortex 27 or a femoral vein double-lumen catheter 32.

[0028] When in use, the human body can directly wear this product in a shoulder strap manner. After wearing it, the display layer 2 is a single-layer structure that is fitted over the human body cavity and the front side of the abdominal cavity, realizing real-life display, demonstration or cooperation with simulation training of puncture operations. The overall realism is high. Compared with the traditional model human display form, the simulation training effect of this utility model is more obvious. The user can implement observation and simulation training more intuitively, and simulate the later work scene more realistically, thereby improving the simulation training effect of this product.

[0029] This product uses a circulating water bladder 8 to work in conjunction with the internal jugular vein bladder 11, the first fistula bladder 9, the second fistula bladder 10, the femoral vein bladder 13, and the subclavian vein bladder 12. This provides hemodialysis reference positions corresponding to actual human positions for external tubing connection and puncture training, achieving a highly realistic component configuration. This ensures that liquid can circulate from the circulating water bladder 8 to the first fistula bladder 9, the second fistula bladder 10, the internal jugular vein bladder 11, the subclavian vein bladder 12, and the femoral vein bladder 13, and ultimately return to the circulating water bladder 8. The overall simulation of the human blood circulation system is highly realistic, providing more realistic display and demonstration effects.

[0030] This product features two simulation training modes. The first involves placing a simulated puncture layer on each bladder. During the puncture procedure, the puncture tubing is inserted through the simulated puncture layer into the bladder to perform hemodialysis puncture training. The second mode directly connects the dual-lumen catheter to the corresponding bladder and seals it with a plug. During use, the plug is removed and the dual-lumen catheter is connected to the external hemodialysis equipment tubing, enabling realistic hemodialysis training. Demonstrations using real people provide a more realistic effect.

[0031] The outer side of the display sheet layer 1 is movably installed with an outer display sheet protective layer by means of sticky hairs and sticky hooks. The outer display sheet protective layer is provided with a first through-hole 33, a second through-hole 34 and a third through-hole 35 corresponding to the positions of the internal jugular vein capsule 11, the subclavian vein capsule 12 and the femoral vein capsule 13. The display sheet layer 1 is made of a needle-proof insulating material. A control box 15 is installed on the outer side of the automatic constant pressure micro water pump 14. A control switch 16 electrically connected to the automatic constant pressure micro water pump 14 is installed on the control box 15. The control switch 16 is electrically connected to the external power cord socket 17.

[0032] In order to increase the service life of this product and provide a variety of simulation training methods, this product is equipped with an outer display sheet protective layer on the outer side of the one-piece wearable suit 1, thereby forming a protective effect and increasing the service life of this product. At the same time, the puncture simulation cortex and double-lumen catheter position set on the capsule are exposed to the outside, and the pipeline components are protected while the reference puncture position can be clearly displayed. During use, the damage to the capsule and the damage to the pipeline caused by misoperation are avoided, which greatly increases the service life of this product. At the same time, it provides a variety of simulation training modes with diverse functions, enhances the simulation effect, and serves the purpose of preventing acupuncture.

[0033] The automatic constant pressure micro water pump 14 is connected to the first fistula sac 9 through the first internal fistula artificial blood vessel 18, the second fistula sac 10 is connected to the internal jugular vein sac 11 through the second internal fistula artificial blood vessel 19, the internal jugular vein sac 11 is connected to the subclavian vein sac 12 through the subclavian vein artificial blood vessel 21, and the subclavian vein sac 12 is connected to the femoral vein sac 13 through the femoral vein artificial blood vessel 22.

[0034] This product simulates the real blood circulation system of the human body when in use, and uses multiple artificial blood vessels for simulated connectivity. The two ends of each artificial tube are connected by a movable interface. When a single artificial blood vessel is damaged, it can be replaced. The artificial blood vessel itself can be used for multiple punctures. Each capsule can also be replaced when a single one is damaged, saving costs, reducing repair and maintenance costs, saving resources, and increasing service life.

[0035] The outer end of the shoulder strap 2 is fixedly mounted with an extension strap 39, which is equipped with a connecting buckle 40. A connecting buckle joint 7 that cooperates with the connecting buckle 40 is fixedly mounted on the outer side of the first waist strap 4. The first waist strap 4 and the second waist strap 5 are connected to each other via a hook and loop layer and a fleece layer. The first neck support strap 3 and the second neck support strap 6 are also connected to each other via a hook and loop layer. The shoulder strap structure makes the whole device easy and quick to put on, allowing for quick donning. The display sheet 1 is then tightly fitted to the front of the chest and abdomen.

[0036] The top of the circulating water bag 8 is provided with an inlet pipe 28 with a one-way water inlet valve, and the bottom of the circulating water bag 8 is provided with a drain pipe 29 with an opening and closing valve. The forearm cuff 24 is provided with a matching Velcro layer 38. The forearm cuff 24 is used to fit the position of the human forearm, and the overall design is sleeveless during use. The forearm cuff 24 is provided with a first fistula sac 9 and a second fistula sac 10 for simulating the fistula position. The front side of the outer display sheet protective layer is provided with a control box 15. The control box 15 is mounted on the corresponding position outside the automatic constant pressure micro water pump 14. The control box 15 is installed with an electrically connected control switch 16, which is electrically connected to the external power cord socket 17. The front side of the outer display sheet protective layer is provided with a water inlet 36 and a drain outlet 37, and the outer ends of the water inlet 36 and the drain outlet 37 are both provided with plugs. The inner ends of the first internal fistula artificial blood vessel 18 and the second internal fistula artificial blood vessel 19 are provided with a limiting fixing sleeve 23 fixedly connected to the front side of the display layer 1.

[0037] The display layer 1 of this product is made of anti-puncture insulating material, which can not only prevent needle injuries, but also avoid circuit safety threats. The overall safety factor is high. The control components simulate the position of the human heart, with high realism, a strong sense of technology, and obvious simulation effects.

[0038] Example 1: Figure 1 、 2As shown in Figures 6 and 7, this embodiment uses only the display sheet layer for simulation training mode, and adopts the method of setting up a puncture simulation cortex for simulation training. During operation, the real person wears the display sheet layer 1 with a harness, the harness 2 is mounted on the shoulder, the first neck protection belt 3 and the second neck protection belt 6 are mounted on the neck, and the first waist fixing belt 4 and the second waist fixing belt 5 are used to fix the waist. When this embodiment is used, the femoral vein puncture simulation cortex 27, the subclavian vein puncture simulation cortex 26, the internal jugular vein puncture simulation cortex 25, the first fistula sac 9 and the second fistula sac 10 directly implement the hemodialysis tube puncture training operation. After the punctured hemodialysis cannula is connected to the external hemodialysis equipment pipeline, the simulation training operation can be carried out. The entire process is demonstrated by real people wearing the equipment, and the effect is realistic.

[0039] Example 2: Figure 1 、 3 As shown in Figures 6 and 7, this embodiment only uses a display sheet to perform a simulation training mode, and uses a double-lumen catheter to perform simulation training. During operation, a real person wears the display sheet 1 with a harness, the harness 2 is put on the shoulder, the first neck protection belt 3 and the second neck protection belt 6 are put on the neck, and the first waist fixing belt 4 and the second waist fixing belt 5 fix the waist. When this embodiment is used, the femoral vein double-lumen catheter 32, the subclavian vein double-lumen catheter 31, and the internal jugular vein double-lumen catheter 30 can be directly connected to the external hemodialysis equipment pipeline to perform simulation training operations. The first fistula sac 9 and the second fistula sac 10 directly perform the hemodialysis tube puncture training operation. After the hemodialysis cannula after puncture is connected to the external hemodialysis equipment pipeline, the simulation training operation can be performed. The whole process is demonstrated by real people wearing it, and the effect is realistic.

[0040] Example 3: Figure 1 、 2 As shown in Figures 5 and 6, this embodiment employs a simulated training mode by providing an outer display sheet protective layer on the outside of the display sheet 1, and also employs a simulated puncture cortex for simulated training. During operation, a real person wears the display sheet 1 with a harness, with the harness 2 fitted around the shoulders, the first neck protection belt 3 and the second neck protection belt 6 fitted around the neck, and the first waist fixation belt 4 and the second waist fixation belt 5 securing the waist. During operation using this embodiment, the internal jugular vein bladder 11, the subclavian vein bladder 12, and the femoral vein bladder 13 correspond to the first, second, and third egress holes 33, 34, and 35, respectively. The femoral vein puncture simulated cortex 27, the subclavian vein puncture simulated cortex 26, the internal jugular vein puncture simulated cortex 25, the first fistula bladder 9, and the second fistula bladder 10 directly perform hemodialysis tube puncture training. After the punctured hemodialysis cannula is connected to the external hemodialysis equipment piping, the simulated training operation can begin. The entire process is demonstrated by real people wearing the equipment, resulting in a realistic effect.

[0041] Example 4: Figure 1 、 3 As shown in Figures 4 and 6, this embodiment adopts a method of providing an outer display sheet protective layer on the outside of the display sheet 1 to perform a simulation training mode, and adopts a method of providing a double-lumen catheter to perform simulation training. During operation, a real person wears the display sheet 1 with a harness, the harness 2 is put on the shoulder, the first neck protection belt 3 and the second neck protection belt 6 are put on the neck, and the first waist fixing belt 4 and the second waist fixing belt 5 fix the waist. When this embodiment is used, the femoral vein double-lumen catheter 32, the subclavian vein double-lumen catheter 31, and the internal jugular vein double-lumen catheter 30 can be directly connected to the external hemodialysis equipment pipeline to perform simulation training operations. The first fistula sac 9 and the second fistula sac 10 directly perform the hemodialysis tube puncture training operation. After the hemodialysis cannula after puncture is connected to the external hemodialysis equipment pipeline, the simulation training operation can be performed. The whole process is demonstrated by real people wearing it, and the effect is realistic.

[0042] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation thereto. Any person skilled in the art may utilize the above disclosure to modify or remodel the present invention into equivalent embodiments. However, any simple modification, equivalent variation, or modification of the above embodiment that does not depart from the technical content of the present invention and is based on the technical essence of the present invention shall still fall within the scope of protection of the present invention.

Claims

1. A strap-type blood purification training device, comprising a display sheet (1), straps (2) mounted on both sides of the upper portion of the display sheet (1), a first waist fixing belt (4) and a second waist fixing belt (5) mounted on both sides of the lower portion of the display sheet (1), characterized in that: The top of the display sheet (1) is provided with a first neck protection belt (3) and a second neck protection belt (6) that cooperate with each other. A circulating water bag (8) is fixedly installed on the front side of the display sheet (1). The circulating water bag (8) is connected to the first fistula bag (9) on the forearm cuff (24) through a pipeline equipped with an automatic constant pressure micro water pump (14). The first fistula bag (9) is connected to the second fistula bag (10) on the forearm cuff (24) through a venous anastomosis internal fistula pipeline (20). The second fistula bag (10) is connected to the internal jugular vein bag (11) installed on the front side of the first neck protection belt (3) and the second neck protection belt (6) through a pipeline. The internal jugular vein sac (11) is connected to the subclavian vein sac (12) through a pipeline, the subclavian vein sac (12) is connected to the femoral vein sac (13) through a pipeline, and the femoral vein sac (13) is connected to the circulating water sac (8) through a pipeline. The external side of the internal jugular vein sac (11) is provided with an internal jugular vein puncture simulation cortex (25) or an internal jugular vein double-lumen catheter (30), the external side of the subclavian vein sac (12) is provided with a subclavian vein puncture simulation cortex (26) or a subclavian vein double-lumen catheter (31), and the external side of the femoral vein sac (13) is provided with a femoral vein puncture simulation cortex (27) or a femoral vein double-lumen catheter (32).

2. The strap-type blood purification training device according to claim 1, characterized in that: The outer side of the display sheet layer (1) is movably mounted with an outer display sheet protective layer through adhesive hairs and adhesive hooks. The outer display sheet protective layer is provided with a first through-hole (33), a second through-hole (34) and a third through-hole (35) corresponding to the positions of the internal jugular vein sac (11), the subclavian vein sac (12) and the femoral vein sac (13). The display sheet layer (1) is made of a needle-proof insulating material. A control box (15) is mounted on the outer side of the automatic constant-pressure micro-water pump (14). A control switch (16) electrically connected to the automatic constant-pressure micro-water pump (14) is mounted on the control box (15). The control switch (16) is electrically connected to the external power cord socket (17).

3. The strap-type blood purification training device according to claim 1, characterized in that: The automatic constant pressure micro water pump (14) is connected to the first fistula sac (9) via the first internal fistula artificial blood vessel (18), the second fistula sac (10) is connected to the internal jugular vein sac (11) via the second internal fistula artificial blood vessel (19), the internal jugular vein sac (11) is connected to the subclavian vein sac (12) via the subclavian vein artificial blood vessel (21), and the subclavian vein sac (12) is connected to the femoral vein sac (13) via the femoral vein artificial blood vessel (22).

4. The strap-type blood purification training device according to claim 1, characterized in that: The outer end of the shoulder strap (2) is fixedly mounted with an extended connecting belt (39), the outer end of the extended connecting belt (39) is mounted with a connecting buckle (40), and a connecting buckle plug-in fastening joint (7) that matches the connecting buckle (40) is fixedly mounted on the outer side of the first waist fixing belt (4), the first waist fixing belt (4) and the second waist fixing belt (5) are connected to each other through a hook layer and a wool layer, and the first neck protection belt (3) and the second neck protection belt (6) are connected to each other through a hook layer and a wool layer.

5. The strap-type blood purification training device according to claim 1, characterized in that: A water injection pipe (28) with a one-way water inlet valve is provided on the top of the circulating water bag (8), a sewage discharge pipe (29) with an opening and closing valve is provided on the bottom of the circulating water bag (8), and a Velcro layer (38) that cooperates with each other is provided on the forearm cuff (24).

6. The strap-type blood purification training device according to claim 2, characterized in that: A control box (15) is provided on the front side of the outer display sheet protective layer. The control box (15) is mounted on a corresponding position outside the automatic constant pressure micro water pump (14). A control switch (16) electrically connected is installed on the control box (15).

7. The strap-type blood purification training device according to claim 2, characterized in that: A water inlet (36) and a sewage outlet (37) are provided on the front side of the outer display sheet protective layer, and plugs are provided at the outer ends of the water inlet (36) and the sewage outlet (37).

8. The strap-type blood purification training device according to claim 3, characterized in that: The inner ends of the first internal fistula artificial blood vessel (18) and the second internal fistula artificial blood vessel (19) are provided with a position-limiting fixing sleeve (23) fixedly connected to the front side of the display sheet (1).

Images