Ultrasonic venipuncture and PICC (Peripherally Inserted Central Catheter) catheterization model

By designing simulated blood vessels, reservoir bags, and flow regulators to simulate blood flow, and using cavities and pumps to simulate blood vessel thickness, the problem of existing models being unable to simulate blood flow and blood vessel thickness is solved, thus improving training effectiveness and applicability.

CN223566231UActive Publication Date: 2025-11-18INST OF HEMATOLOGY & BLOOD DISEASES HOSPITAL CHINESE ACADEMY OF MEDICAL SCI & PEKING UNION MEDICAL COLLEGE
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Patent Information

Application Number
CN202422828310.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-19
Publication Date
2025-11-18
Estimated Expiration
2034-11-19

AI Technical Summary

Technical Problem

Existing ultrasound-guided venous puncture and PICC placement models cannot simulate blood flow and different blood vessel sizes in the human body, resulting in low training efficiency and high costs for novice nurses, and making it difficult to adapt to people of different positions and ages.

Method used

A model was designed that includes simulated tissue, fixation components, vascular components, and compression components. The model simulates blood flow by using simulated blood vessels, reservoir bags, and flow rate regulators, and uses cavities and pump bodies to simulate blood vessels of different diameters. The fixation components are adapted to simulated tissues of different sizes.

Benefits of technology

It improves the simulation effect of training, can simulate blood flow and needle puncture blood return, adapts to blood vessels of different sizes and people, reduces training costs, and improves operational accuracy and stability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides an ultrasound venipuncture and PICC (Peripherally Inserted Central Catheter) catheterization model, which comprises a simulation tissue, a fixing assembly, a blood vessel assembly and extrusion assemblies, the simulation tissue is arranged above the fixing assembly and is fixed through the fixing assembly, the blood vessel assembly and the extrusion assemblies are arranged in the simulation tissue, and the extrusion assemblies are arranged on the two sides of the blood vessel assembly; the blood vessel assembly comprises a simulation blood vessel, a first liquid storage bag, a second liquid storage bag, a first flow speed regulator and a second flow speed regulator, the simulation blood vessel is arranged in the simulation tissue and penetrates through the simulation tissue, the first liquid storage bag is arranged at one end of the simulation blood vessel, the second liquid storage bag is arranged at the other end of the simulation blood vessel, and the first flow speed regulator is arranged at the other end of the simulation blood vessel. And the first flow rate regulator and the second flow rate regulator are arranged on the simulated blood vessel. According to the utility model, human veins are simulated through the blood vessel assembly, blood flow in the veins can be simulated, the blood flow speed can be adjusted, and the extrusion assembly can extrude the simulated blood vessels, so that blood vessels with different thicknesses can be simulated.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to the medical technology field especially, and it is a kind of vein puncture and PICC intubation model under ultrasound. BACKGROUND

[0002] With the continuous progress of medical technology, vein puncture and PICC intubation technology under ultrasound has become an indispensable part of modern medicine.However, these technologies often have certain operation difficulty and risk for novice nurses.Therefore, continuous practice is needed to improve puncture technology, and traditional surgical training process usually uses animals, human samples and manikins as implementation carriers, which is often costly and has low material utilization, thereby inhibiting the efficiency and proficiency of medical worker training to some extent.

[0003] Therefore, it is particularly important to develop a new teaching aid to simulate a real operating environment, reduce operation difficulty and improve the operational skill level of novice nurses.The accuracy of vein puncture and PICC intubation under ultrasound directly affects the treatment effect and safety of patients.Therefore, the teaching model needs to be able to simulate real blood vessel structure, blood flow and patient movement, so that novice nurses can repeatedly practice in a simulated environment, thereby improving the accuracy and stability of operation.

[0004] However, the teaching model in the prior art can simulate blood vessels, but cannot simulate blood flow in human blood vessels, and cannot simulate blood vessels of different thicknesses to adapt to puncture at different positions and different age groups. UTILITY MODEL CONTENT

[0005] Therefore, the utility model aims to provide a vein puncture and PICC intubation model under ultrasound to solve the problem that the puncture model in the prior art cannot simulate blood flow in human blood vessels and cannot simulate blood vessels of different thicknesses.

[0006] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0007] A vein puncture and PICC intubation model under ultrasound includes simulation tissue, a fixing assembly, a blood vessel assembly and a squeezing assembly, the simulation tissue is arranged above the fixing assembly and is fixed by the fixing assembly, the blood vessel assembly and the squeezing assembly are arranged inside the simulation tissue, and the squeezing assembly is arranged on both sides of the blood vessel assembly.

[0008] The blood vessel assembly comprises a simulation blood vessel, a first liquid storage bag, a second liquid storage bag, a first flow rate regulator and a second flow rate regulator, the simulation blood vessel is arranged inside the simulation tissue and penetrates the simulation tissue, the first liquid storage bag is arranged at one end of the simulation blood vessel, the second liquid storage bag is arranged at the other end of the simulation blood vessel, and the first flow rate regulator and the second flow rate regulator are arranged on the simulation blood vessel.

[0009] Further, the first flow rate regulator is arranged at the side of the simulation blood vessel close to the first liquid storage bag, and the second flow rate regulator is arranged at the side of the simulation blood vessel close to the second liquid storage bag.

[0010] Further, the first liquid storage bag and the second liquid storage bag are detachably connected with the simulation blood vessel.

[0011] Further, the first liquid storage bag and the second liquid storage bag are each provided with a liquid outlet.

[0012] Further, the first liquid storage bag and the second liquid storage bag are each provided with a hanging ring at the end away from the simulation blood vessel.

[0013] The simulation blood vessel is arranged inside the simulation tissue and is used for simulating the vein of the human arm, the first liquid storage bag is hung above the simulation tissue through the hanging ring, the second liquid storage bag is hung below the simulation tissue through the hanging ring, the liquid in the first liquid storage bag flows downward under the action of gravity, flows through the simulation blood vessel and then flows into the second liquid storage bag, this process can simulate the blood flow of the human body during puncture and can produce the effect of needle puncture backflow, thereby further improving the simulation effect. When the liquid in the first liquid storage bag flows into the second liquid storage bag, the positions of the first liquid storage bag and the second liquid storage bag can be exchanged to ensure that there is enough blood flowing continuously. The first flow rate regulator and the second flow rate regulator can adjust the flow rate of the simulation blood, thereby simulating the flow rate of the human blood.

[0014] After the blood vessel assembly is used for a period of time, impurities exist in the simulation blood vessel, the first liquid storage bag and the second liquid storage bag are provided with liquid outlets, the liquid can be discharged through the liquid outlets, and clean water can be injected into the first liquid storage bag or the second liquid storage bag to clean the inside of the simulation blood vessel.

[0015] Preferably, the simulation blood vessel is made of a rubber tube, and the liquid in the first liquid storage bag and the second liquid storage bag is blood.

[0016] Further, the simulation tissue is made of silica gel or a thermoplastic elastomer.

[0017] Further, the extrusion assembly comprises a cavity and a pipeline, the cavity is arranged inside the simulation tissue and on both sides of the simulation blood vessel, one end of the pipeline is connected with the cavity, the other end of the pipeline extends to the outside of the simulation tissue and is connected with a pump body, and the pipeline is in communication with the inside of the cavity.

[0018] The flowing body such as air or water is input into the cavity along the pipeline by the pump body, the material of the simulation tissue is soft and elastic, thus the cavity is expanded by the flowing body, the simulation blood vessel between the cavities is pressed, the simulation blood vessel is thinned, and different thicknesses of blood vessels in the human body are simulated.

[0019] Further, the fixing assembly comprises a bottom plate, an abutting plate and a clamping plate, the abutting plate is vertically arranged at one end of the bottom plate, and the clamping plate is slidingly arranged at the other end of the bottom plate.

[0020] Further, one end of the bottom plate provided with the clamping plate is provided with a plurality of sliding grooves, the bottom of the clamping plate is provided with sliding blocks corresponding to the sliding grooves, and the sliding blocks are provided with abutting bolts.

[0021] The sliding blocks can slide in the sliding grooves and are fixed through the abutting bolts, so that the clamping plate can slide on the bottom plate, the distance between the clamping plate and the abutting plate is adjusted, and different specifications of simulation tissues are adapted.

[0022] Further, the bottom of the bottom plate is provided with an antiskid pad.

[0023] Compared with the prior art, the ultrasonic venipuncture and PICC catheterization model has the following advantages:

[0024] (1) The simulation blood vessel can simulate the veins of the human arm, the first liquid storage bag and the second liquid storage bag are arranged at the two ends of the simulation blood vessel, the first liquid storage bag and the second liquid storage bag are arranged one above the other, and the simulation blood vessel flows under the action of gravity, the process can simulate the blood flow of the human body in the puncture process, and the effect of needle puncture backflow of blood can be generated, and the simulation effect is further improved;

[0025] (2) The first flow rate regulator and the second flow rate regulator can adjust the flow rate of the simulation blood, so as to simulate the flow rate of the human blood;

[0026] (3) The cavities are arranged on the two sides of the simulation blood vessel, the flowing body is filled into the cavities, the simulation blood vessel is pressed, and different thicknesses of blood vessels are simulated;

[0027] (4) The fixing assembly can fix the simulation tissue, and different specifications of simulation tissues can be adapted. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings, which form a part of this description, are included to provide a further understanding of the application and are incorporated herein for explanation. The embodiments of the present application, illustrated in the drawings, and their description thereof are presented to explain the present application and are not intended to limit the present application unduly.

[0029] Fig. 1 A kind of venipuncture under ultrasound and PICC intubation model overall schematic diagram for the embodiment of the utility model is described;

[0030] Fig. 2 Extrusion assembly initial state schematic diagram of a kind of venipuncture under ultrasound and PICC intubation model for the embodiment of the utility model is described;

[0031] Fig. 3 Extrusion assembly extrusion simulation blood vessel after schematic diagram of a kind of venipuncture under ultrasound and PICC intubation model for the embodiment of the utility model is described.

[0032] Mark explanation:

[0033] 1, simulation tissue;2, simulation blood vessel;3, first liquid storage bag;4, second liquid storage bag;5, first flow rate regulator;6, second flow rate regulator;7, hanging ring;8, cavity;9, pipeline;10, bottom plate;11, abutment plate;12, clamp plate;13, sliding slot;14, sliding block;15, abutting bolt;16, non-slip pad. Specific implementation

[0034] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0035] The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0036] As Figs. 1 to 3 Indicated, a kind of venipuncture under ultrasound and PICC intubation model, including simulation tissue 1, fixed component, blood vessel component, extrusion assembly, the simulation tissue 1 is set on fixed component top and is fixed by fixed component, blood vessel component and extrusion assembly are set in simulation tissue 1 interior, and extrusion assembly is set at the both sides of blood vessel component;

[0037] The blood vessel component includes simulation blood vessel 2, first liquid storage bag 3, second liquid storage bag 4, first flow rate regulator 5, second flow rate regulator 6, simulation blood vessel 2 is set in simulation tissue 1 interior, and simulation blood vessel 2 is through in simulation tissue 1 interior, first liquid storage bag 3 is set at one end of simulation blood vessel 2, second liquid storage bag 4 is set at the other end of simulation blood vessel 2, first flow rate regulator 5 and second flow rate regulator 6 are set on simulation blood vessel 2.

[0038] The first flow rate regulator 5 is set at the side of simulation blood vessel 2 close to first liquid storage bag 3, and the second flow rate regulator 6 is set at the side of simulation blood vessel 2 close to second liquid storage bag 4.

[0039] The first liquid storage bag 3 and second liquid storage bag 4 are detachably connected with simulation blood vessel 2.

[0040] The first liquid storage bag 3 and the second liquid storage bag 4 are both provided with liquid outlets.

[0041] The first liquid storage bag 3 and the second liquid storage bag 4 are both provided with hanging rings 7 at the ends away from the simulated blood vessel 2.

[0042] The simulated blood vessel 2 is arranged inside the simulated tissue 1 and is used to simulate the vein of a human arm. The first liquid storage bag 3 is hung above the simulated tissue 1 through the hanging ring 7, and the second liquid storage bag 4 is hung below the simulated tissue 1 through the hanging ring 7. The liquid in the first liquid storage bag 3 flows downward under the action of gravity, flows through the simulated blood vessel 2, and then flows into the second liquid storage bag 4. This process can simulate the flow of human blood during puncture and can produce the effect of needle puncture backflow, thereby further improving the simulation effect. When the liquid in the first liquid storage bag 3 flows into the second liquid storage bag 4, the positions of the first liquid storage bag 3 and the second liquid storage bag 4 can be exchanged to ensure that there is enough blood flowing continuously. The first flow rate regulator 5 and the second flow rate regulator 6 can adjust the flow rate of the simulated blood, thereby simulating the flow rate of human blood.

[0043] After the blood vessel assembly is used for a period of time, impurities exist in the simulated blood vessel 2. The first liquid storage bag 3 and the second liquid storage bag 4 are provided with liquid outlets. The liquid can be discharged through the liquid outlets, and clean water can be injected into the first liquid storage bag 3 or the second liquid storage bag 4 to clean the inside of the simulated blood vessel 2.

[0044] Preferably, the simulated blood vessel 2 is made of a rubber tube, and the liquid in the first liquid storage bag 3 and the second liquid storage bag 4 is blood.

[0045] The simulated tissue 1 is made of silica gel or a thermoplastic elastomer.

[0046] The squeezing assembly includes a cavity 8 and a pipeline 9. The cavity 8 is arranged inside the simulated tissue 1 and is arranged on both sides of the simulated blood vessel 2. One end of the pipeline 9 is connected with the cavity 8, and the other end of the pipeline 9 extends to the outside of the simulated tissue 1 and is connected with a pump body. The pipeline 9 is in communication with the inside of the cavity 8.

[0047] The pump body is used to input a flowing body such as air or water into the cavity 8 along the pipeline 9. The material of the simulated tissue 1 is soft and elastic, so the cavity 8 is expanded by the flowing body, thereby squeezing the simulated blood vessel 2 between the cavities 8 and making the simulated blood vessel 2 thinner, thereby simulating the blood vessels of different thicknesses in the human body.

[0048] The fixing assembly includes a bottom plate 10, an abutting plate 11, and a clamping plate 12. The abutting plate 11 is vertically arranged at one end of the bottom plate 10, and the clamping plate 12 is slidingly arranged at the other end of the bottom plate 10.

[0049] The bottom plate 10 is provided with a plurality of sliding grooves 13 at one end of the clamping plate 12, and the bottom of the clamping plate 12 is provided with sliding blocks 14 corresponding to the sliding grooves 13, and the sliding blocks 14 are provided with abutting bolts 15.

[0050] The sliding blocks 14 can slide in the sliding grooves 13 and are fixed through the abutting bolts 15, so that the clamping plate 12 can slide on the bottom plate 10, thereby adjusting the distance between the clamping plate 12 and the abutting plate 11 to adapt to different specifications of the simulated tissue 1.

[0051] The bottom of the bottom plate 10 is provided with a non-slip pad 16.

[0052] In the specific implementation, when the simulated tissue 1 is made, the simulated blood vessels 2 and the pipeline 9 are embedded in the simulated tissue 1, and the cavities 8 are reserved; after the simulated tissue 1 is made, the simulated tissue 1 is placed on the bottom plate 10 and abuts against the abutting plate 11 on one side, the position of the clamping plate 12 is adjusted, so that one side of the clamping plate 12 abuts against the other side of the simulated tissue 1, and the clamping plate 12 is fixed through the abutting bolts 15; the first liquid storage bag 3 is hung above the simulated tissue 1 through the hanging ring 7, the second liquid storage bag 4 is hung below the simulated tissue 1 through the hanging ring 7, blood is injected into the first liquid storage bag 3 through the liquid outlet, under the action of gravity, the blood in the first liquid storage bag 3 continuously flows through the simulated blood vessels 2 and flows into the second liquid storage bag 4, at this time, the puncture operation is performed, the flow speed of the blood can be adjusted through the first flow rate regulator 5, so as to simulate the flow speed of the human blood in the puncture process.

[0053] When it is necessary to practice puncture of blood vessels with different thicknesses, the pump body is used to input air into the cavities 8 along the pipeline 9, the cavities 8 are expanded by the air, and the simulated blood vessels 2 between the cavities 8 are squeezed, under the continuous squeezing, the diameter of the simulated blood vessels 2 gradually decreases, so as to simulate blood vessels with different thicknesses.

[0054] After the puncture practice is completed, the blood in the second liquid storage bag 4 can be discharged from the liquid outlet, and clean water is injected into the first liquid storage bag 3, and the interior of the simulated blood vessels 2 is cleaned by using the gravity principle.

[0055] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An ultrasound vein puncture and PICC catheterization model, characterized in that: The simulation tissue (1), the fixed assembly, the blood vessel assembly and the extrusion assembly are provided, the simulation tissue (1) is arranged above the fixed assembly and is fixed by the fixed assembly, the blood vessel assembly and the extrusion assembly are arranged inside the simulation tissue (1), and the extrusion assembly is arranged on both sides of the blood vessel assembly; The blood vessel assembly comprises a simulation blood vessel (2), a first liquid storage bag (3), a second liquid storage bag (4), a first flow rate regulator (5) and a second flow rate regulator (6), the simulation blood vessel (2) is arranged inside the simulation tissue (1), and the simulation blood vessel (2) penetrates inside the simulation tissue (1), the first liquid storage bag (3) is arranged at one end of the simulation blood vessel (2), the second liquid storage bag (4) is arranged at the other end of the simulation blood vessel (2), and the first flow rate regulator (5) and the second flow rate regulator (6) are arranged on the simulation blood vessel (2); The first flow rate regulator (5) is arranged on one side of the simulation blood vessel (2) close to the first liquid storage bag (3), and the second flow rate regulator (6) is arranged on one side of the simulation blood vessel (2) close to the second liquid storage bag (4); The first liquid storage bag (3) and the second liquid storage bag (4) are detachably connected with the simulation blood vessel (2); Liquid outlets are arranged on the first liquid storage bag (3) and the second liquid storage bag (4); Hanging rings (7) are arranged at the ends of the first liquid storage bag (3) and the second liquid storage bag (4) away from the simulation blood vessel (2); The fixed assembly comprises a bottom plate (10), an abutting plate (11) and a clamping plate (12), the abutting plate (11) is vertically arranged at one end of the bottom plate (10), and the clamping plate (12) is slidingly arranged at the other end of the bottom plate (10).

2. The ultrasound lower vein puncture and PICC catheterization model according to claim 1, characterized in that: The simulation tissue (1) is made of silica gel material or thermoplastic elastomer.

3. The ultrasound lower vein puncture and PICC catheterization model according to claim 1, characterized in that: The extrusion assembly comprises cavities (8) and pipelines (9), the cavities (8) are arranged inside the simulation tissue (1) and on both sides of the simulation blood vessel (2), one end of the pipeline (9) is connected with the cavity (8), the other end of the pipeline (9) extends to the outside of the simulation tissue (1), the other end of the pipeline (9) is connected with a pump body, and the pipeline (9) is in communication with the cavities (8).

4. The ultrasound lower vein puncture and PICC catheterization model according to claim 1, characterized in that: The end of the bottom plate (10) provided with the clamping plate (12) is provided with a plurality of sliding grooves (13), the bottom of the clamping plate (12) is provided with sliding blocks (14) corresponding to the sliding grooves (13), and the sliding blocks (14) are provided with abutting bolts (15).

5. The ultrasound lower vein puncture and PICC catheterization model according to claim 1, characterized in that: The bottom of the bottom plate (10) is provided with an antiskid pad (16).