A venipuncture training simulation arm that can simulate different vein conditions

Abstract

The utility model relates to medical teaching equipment technical field discloses a kind of venipuncture training simulation arms of simulating different venous state, including simulation arm and controller, the controller is communicated between simulation arm by liquid inlet pipe and liquid outlet pipe, the pipe body outer wall of liquid inlet pipe and the outer wall of controller are respectively correspondingly installed with single hand clamp, and the outer wall of the one end of liquid inlet pipe away from controller, the outer wall of the one end of liquid outlet pipe away from controller is respectively fixedly installed with the connecting component for pipeline butt joint, the utility model supports single hand quick on-off pipeline by single hand clamp on liquid inlet pipe and controller, can effectively reduce training interruption and leakage;Mounting block one of connecting component, mounting block two are securely buckled with corresponding clamping block by hook-shaped buckle, matched with leakage-proof rubber gasket, solve the problem of traditional joint poor sealing, easy to wear and leak.

Description

Technical Field

[0001] This utility model relates to the field of medical teaching equipment technology, and in particular to a simulated arm for venous puncture training that can simulate different venous conditions. Background Technology

[0002] Venous puncture is a core and fundamental skill in clinical medicine, widely used in clinical scenarios such as intravenous infusion and blood drawing. Proficiency in this procedure directly impacts diagnostic and treatment efficiency and patient experience. Traditional training methods primarily rely on live practice or static simulation models. Live practice presents ethical risks, safety hazards, and limited training opportunities. Static models, on the other hand, have become an important alternative tool for medical teaching, pre-employment training in hospitals, and nursing skills assessments. They aim to help healthcare professionals become familiar with key skills such as puncture angle and needle depth, thereby reducing the risks associated with actual procedures.

[0003] A venous puncture practice arm model with announcement number CN202454155U has been disclosed. The arm model consists of a simulated skin layer, a simulated subcutaneous tissue layer, and a muscle model. The muscle model is shaped like an arm, and the tail of the muscle model is equipped with an inlet catheter and an outlet catheter. Simulated blood vessels are embedded on the surface of the muscle model. This venous puncture practice arm model has elastic simulated skin and simulated blood vessels, which can be touched to facilitate needle insertion. When punctured correctly, there is a clear feeling of loss of sensation and blood return. The feel is realistic, and it can withstand repeated puncture practice.

[0004] The aforementioned arm model for intravenous puncture practice, while achieving basic puncture training functions through simulated skin, blood vessels, and blood return design, requires additional external tools to shut off the tubing or disassemble the connection structure when fluid circulation needs to be paused during training, such as to replace simulated blood, adjust the training scenario, or handle puncture errors. This cumbersome process is prone to fluid leakage, affecting the continuity of training and increasing model maintenance costs and cleaning burden. Furthermore, the device does not explicitly optimize the connector structure; if conventional direct-insertion or simple connectors are used, insufficient connection sealing is likely to occur, and fluid leakage may occur due to connector wear after long-term repeated use. In addition, the installation and disassembly of traditional connectors often require the coordinated operation of both hands, reducing overall training efficiency.

[0005] Therefore, a simulated arm for venous puncture training was designed to simulate different venous conditions. Utility Model Content

[0006] This invention addresses the shortcomings of existing technologies by providing a simulated venous puncture training arm that can simulate different venous conditions. It solves the problems of existing venous puncture training arm models, such as the inability to pause fluid circulation, the need for tools or disassembly leading to leakage, poor sealing of conventional connectors, easy wear and leakage, and the need for both hands for disassembly and assembly, resulting in low efficiency.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A simulated venous puncture training arm capable of simulating different venous states includes a simulated arm and a controller. The controller and the simulated arm are connected by an inlet tube and an outlet tube. A single-hand clamp is installed on the outer wall of the inlet tube and the outer wall of the controller, respectively. Connecting components for tube connection are fixedly installed on the outer wall of the inlet tube away from the controller and the outer wall of the outlet tube away from the controller, respectively.

[0008] Preferably, the connecting component includes mounting block one and mounting block two. Mounting block one is coaxially fixedly installed at the free end of the inlet pipe, and mounting block two is coaxially fixedly installed at the free end of the outlet pipe.

[0009] Preferably, two sets of buckles are symmetrically fixedly installed on the outer peripheral wall of the mounting block one along the circumferential direction, and two sets of locking blocks are fixedly installed between the two sets of buckles one, and the two sets of buckles one and the two sets of locking blocks one are symmetrically distributed at intervals on the outer peripheral wall of the mounting block one.

[0010] Preferably, two sets of buckles are symmetrically fixedly installed on the outer peripheral wall of the mounting block two along the circumferential direction, and two sets of locking blocks are fixedly installed between the two sets of buckles two. The two sets of buckles two and the two sets of locking blocks two are symmetrically distributed on the outer peripheral wall of the mounting block two, and the positions of buckles two and locking blocks one correspond to each other.

[0011] Preferably, annular grooves are respectively provided on the end face of mounting block one facing mounting block two and the end face of mounting block two facing mounting block one. Leak-proof rubber gaskets are embedded and fixed in the annular grooves. When mounting block one and mounting block two are fastened together, the two sets of leak-proof rubber gaskets fit together to achieve a seal.

[0012] Preferably, the ends of the first buckle away from the first mounting block are bent toward the axis of the first mounting block to form hook-shaped structures, and the ends of the second buckle away from the second mounting block are bent toward the axis of the second mounting block to form hook-shaped structures. When the first mounting block and the second mounting block are fastened together, the hook-shaped ends of the first buckle engage with the corresponding second buckle, and the hook-shaped ends of the second buckle engage with the corresponding first buckle, thereby achieving a fixed fastening between the first mounting block and the second mounting block.

[0013] Preferably, the end of the inlet pipe extending into the interior of the simulated arm and the end of the outlet pipe extending into the interior of the simulated arm are connected in series via a connector. Multiple simulated tubes for simulating human veins are installed in parallel on the outer wall of the connector away from the inlet and outlet pipes, and the other ends of the multiple simulated tubes are all connected to the connector.

[0014] Preferably, an inflation component for adjusting the state of the analog tube is fixedly installed on the outer wall of the controller. The inflation component includes an air pipe and an air pump. The air pump is fixedly installed on the outer wall of the controller. One end of the air pipe is fixedly connected to the air outlet of the air pump, and the other end of the air pipe extends into the inside of the controller and is fixedly connected to the inner wall of the controller.

[0015] Preferably, multiple airbags are arranged at intervals along the length of the simulation tube near the outer wall of the simulation tube. The multiple airbags are connected in sequence by flexible hoses, and the air inlet of one of the airbags is fixedly connected to one end of the air tube extending into the controller. An air pump inflates and deflates the airbag through the air tube to adjust the pressure state of the simulation tube.

[0016] Preferably, a control button is also fixedly installed on the outer wall of the controller. The control button is electrically connected to the air pump. By pressing the control button, the start, stop and inflation / deflation modes of the air pump can be controlled, thereby adjusting the inflation volume of the airbag to simulate veins under different filling or compression conditions.

[0017] Compared with the prior art, the present invention has the following beneficial effects: This invention supports quick one-handed connection and disconnection of the pipeline via a single-hand clamp on the inlet pipe and controller, effectively reducing training interruptions and leakage. The mounting blocks one and two of the connecting components are securely fastened to the corresponding blocks via hook-shaped buckles, and are equipped with leak-proof rubber gaskets, solving the problems of poor sealing, easy wear and leakage of traditional joints.

[0018] This invention utilizes an inflation component, where pressing a control button drives an inflation pump to inflate and deflate the airbag through an air tube, simultaneously compressing or releasing the simulated tube, thus enabling switching between multiple states such as healthy veins, collapsed veins during dehydration and shock, and senile sclerotic veins. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial cross-sectional structural diagram of the present invention; Figure 3 This utility model Figure 2 A magnified structural diagram of A in the middle; Figure 4 This is a schematic diagram of the structure of the single-handed clamp of this utility model; Figure 5 This is an exploded structural diagram of the connecting component of this utility model.

[0021] Figure number descriptions: 1. Simulated arm; 2. Controller; 21. Inlet pipe; 22. Outlet pipe; 23. Connector; 24. Simulation tube; 3. Single-hand clamp; 4. Connecting component; 41. Mounting block one; 411. Buckle one; 412. Buckle one; 42. Mounting block two; 421. Buckle two; 422. Buckle two; 5. Inflatable component; 50. Air tube; 51. Airbag. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings.

[0023] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0024] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0025] It is understood that the term "a" should be understood as "at least one" or "one or more," that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0026] Example 1: Please see Figure 1-5 A simulated venous puncture training arm that can simulate different venous states includes a simulated arm 1 and a controller 2. The controller 2 and the simulated arm 1 are connected by an inlet pipe 21 and an outlet pipe 22. A single-hand clamp 3 is installed on the outer wall of the inlet pipe 21 and the outer wall of the controller 2, respectively. Connecting components 4 for pipe connection are fixedly installed on the outer wall of the inlet pipe 21 away from the controller 2 and the outer wall of the outlet pipe 22 away from the controller 2, respectively.

[0027] The connecting component 4 includes mounting block 1 41 and mounting block 2 42. Mounting block 1 41 is coaxially fixedly installed at the free end of the inlet pipe 21, and mounting block 2 42 is coaxially fixedly installed at the free end of the outlet pipe 22.

[0028] Two sets of clips 411 are symmetrically fixedly installed on the outer peripheral wall of mounting block 41 along the circumferential direction. Two sets of clip blocks 412 are fixedly installed between the two sets of clips 411. The two sets of clips 411 and the two sets of clip blocks 412 are symmetrically distributed on the outer peripheral wall of mounting block 41.

[0029] Two sets of clips 421 are symmetrically fixed on the outer peripheral wall of mounting block 42 along the circumferential direction. Two sets of clips 422 are fixed between the two sets of clips 421. The two sets of clips 421 and the two sets of clips 422 are symmetrically distributed on the outer peripheral wall of mounting block 42. The positions of clips 421 and clips 412 correspond to those of clips 411, and the positions of clips 422 and clips 411 correspond to those of clips 411.

[0030] Annular grooves are provided on the end face of mounting block 1 41 facing mounting block 2 42 and the end face of mounting block 2 42 facing mounting block 1 41, respectively. Leak-proof rubber gaskets are embedded and fixed in the annular grooves. When mounting block 1 41 and mounting block 2 42 are fastened together, the two sets of leak-proof rubber gaskets fit together to achieve a seal.

[0031] The ends of buckle 1 411 that are away from mounting block 1 41 are bent toward the axis of mounting block 1 41 to form hook-shaped structures, and the ends of buckle 2 421 that are away from mounting block 2 42 are bent toward the axis of mounting block 2 42 to form hook-shaped structures. When mounting block 1 41 and mounting block 2 42 are fastened together, the hook-shaped ends of buckle 1 411 engage with the corresponding buckle 2 422, and the hook-shaped ends of buckle 2 421 engage with the corresponding buckle 1 412, thereby achieving a fixed fastening between mounting block 1 41 and mounting block 2 42.

[0032] One end of the inlet pipe 21 extends into the interior of the simulated arm 1, and the other end of the outlet pipe 22 extends into the interior of the simulated arm 1. They are connected in series through a connector 23. Multiple simulated tubes 24 for simulating human veins are installed in parallel on the outer wall of the connector 23 away from the inlet pipe 21 and the outlet pipe 22. The other ends of the multiple simulated tubes 24 are all connected to the connector 23.

[0033] An inflation component 5 for adjusting the state of the analog tube 24 is fixedly installed on the outer wall of the controller 2. The inflation component 5 includes an air pipe 50 and an air pump. The air pump is fixedly installed on the outer wall of the controller 2. One end of the air pipe 50 is fixedly connected to the air outlet of the air pump, and the other end of the air pipe 50 extends into the inside of the controller 2 and is fixedly connected to the inner wall of the controller 2.

[0034] Multiple airbags 51 are spaced apart along the length of the simulation tube 24 near the outer wall of the simulation tube 24. The multiple airbags 51 are connected in sequence by flexible hoses, and the air inlet of one of the airbags 51 is fixedly connected to one end of the air tube 50 extending into the controller 2. The air pump inflates and deflates the airbag 51 through the air tube 50 to adjust the pressure state of the simulation tube 24.

[0035] A control button is also fixedly installed on the outer wall of the controller 2. The control button is electrically connected to the air pump. By pressing the control button, the start, stop and inflation / deflation modes of the air pump can be controlled, thereby adjusting the inflation volume of the airbag 51 to simulate veins under different filling or compression conditions.

[0036] With the single-hand clamp 3 installed on the outer wall of the inlet pipe 21 and the outer wall of the controller 2 respectively, the trainee or operator can control the pipe opening and closing with one hand. When it is necessary to change the simulated blood, adjust the puncture scenario or deal with puncture errors during training, the single-hand clamp 3 can be quickly closed to cut off the liquid circulation, reduce training interruption time, reduce the probability of liquid leakage, and reduce the burden of subsequent cleaning and maintenance.

[0037] The connecting component 4 at the free end of the inlet pipe 21 and the outlet pipe 22 achieves pipe connection through the symmetrical interlocking structure of mounting block 1 41 and mounting block 2 42. The positions of the first buckle 411 and the first buckle 412 of mounting block 1 41 correspond precisely to the positions of the second buckle 421 and the second buckle 422 of mounting block 2 42, and the ends of the buckles are hook-shaped, which can form a firm connection with the corresponding buckles when the pipes are engaged, preventing the pipes from loosening. At the same time, the annular grooves on the mating surfaces of mounting block 1 41 and mounting block 2 42 are embedded with leak-proof rubber gaskets. After the connection is made, the gaskets fit tightly, effectively solving the problems of insufficient sealing and easy wear and leakage of traditional direct-insertion or simple connectors after long-term use, and ensuring the stability of liquid circulation.

[0038] Relying on the synergistic effect of the inflatable component 5 and the airbag 51, the venous characteristics under different pathophysiological states can be simulated. The control button on the outer wall of the controller 2 is electrically connected to the inflatable pump. Pressing the button controls the inflatable pump to inflate and deflate the airbag 51 through the air tube 50. When inflated, multiple airbags 51 distributed at intervals along the length of the outer wall of the simulated tube 24 are connected by flexible tubing. The inflated state expands synchronously and compresses the simulated tube 24, which can simulate the effect of venous collapse and narrowing of the lumen under dehydration and shock, or the reduced elasticity of the lumen of venous sclerosis in elderly patients. When deflated, the airbag 51 is relieved of pressure, and the simulated tube 24 returns to its normal lumen shape, corresponding to the venous filling state of a healthy adult.

[0039] The inlet tube 21 and outlet tube 22 extend into the interior of the simulated arm 1 via a connector 23. Multiple simulated tubes 24 are installed in parallel on one side of the connector 23. Their positions and depths can be set according to the anatomical distribution of veins in the human arm. All simulated tubes 24 are connected to the connector 23, ensuring smooth simulated blood circulation. During training, this allows for the reproduction of the puncture sensation in different vein locations, such as the depth differences between veins on the back of the hand and in the forearm, helping trainees become familiar with the distribution characteristics of veins in real clinical settings and improving the precision of puncture procedures. The buckles and blocks of the connecting component 4 are made of wear-resistant polymer material, which can withstand repeated fastening and disassembly, avoiding the wear problem caused by frequent plugging and unplugging of traditional connectors; the simulation tube 24 is made of elastic transparent material, which has both puncture resistance and visualization effect. Combined with the flexible compression design of the air bag 51, it can withstand multiple puncture operations without being easily damaged, and the shape change of the simulation tube 24 can intuitively show the vein status, taking into account both durability and training intuitiveness.

[0040] During operation, connect the inlet pipe 21 and the outlet pipe 22 through the connecting component 4, align the mounting block 41 and the mounting block 42, press the buckle 411 and the buckle 421, and then rotate the mounting block 41 and the mounting block 42 so that their hook-shaped ends engage with the corresponding buckle 422 and buckle 412 respectively. At this time, the leak-proof rubber gaskets on the end faces of the mounting block 41 and the mounting block 42 fit together and seal, thus completing the pipeline assembly.

[0041] Confirm that the inlet pipe 21 and the single-hand clamp 3 on the controller 2 are in the closed state to prevent simulated blood leakage; inject an appropriate amount of simulated blood into the external supply device, open the single-hand clamp 3, so that the simulated blood flows into the controller 2 along the inlet pipe 21, then enters each parallel simulated pipe 24 through the connector 23, and finally flows back to the recovery device through the outlet pipe 22 to form a circulation path.

[0042] According to the training requirements, the target vein state, such as normal filling, collapse, hardening, etc., can be selected through the control button on the outer wall of the controller 2. If the simulated blood vessel collapse is to be simulated, the control button is pressed to start the air pump. The air pump inflates the air bag 51 near the simulated tube 24 through the air tube 50. After the air bag 51 expands, it compresses the simulated tube 24, narrowing its lumen and simulating the collapsed state. If the simulated normal filling is to be simulated, the air pump is switched to the deflation mode through the control button. After the air bag 51 deflates, it releases the pressure on the simulated tube 24, and the simulated tube 24 returns to its normal lumen shape.

[0043] Trainees observe the position of simulated blood vessels on the surface of the simulated arm 1, and practice puncture by adjusting the needle angle and depth according to clinical venous puncture standards. During training, if it is necessary to pause to change the simulated blood or adjust the puncture site, the inlet tube 21 or the single-hand clamp 3 on the controller 2 can be closed with one hand to cut off the fluid circulation. After the operation is completed, the single-hand clamp 3 can be reopened to resume training.

[0044] After training, turn off the control button to stop the air pump from working and completely release the gas in the airbag 51; close the single-hand clamp 3, disassemble the inlet pipe 21, outlet pipe 22 and connection, drain the simulated blood remaining in the pipes, clean the surface of the simulated arm 1 and each pipe, and properly store the device for later use.

[0045] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A simulated arm for venous puncture training that can simulate different venous conditions, characterized in that, The device includes a simulated arm (1) and a controller (2). The controller (2) and the simulated arm (1) are connected by an inlet pipe (21) and an outlet pipe (22). A single-hand clamp (3) is installed on the outer wall of the inlet pipe (21) and the outer wall of the controller (2). Connecting components (4) for pipe connection are fixedly installed on the outer wall of the inlet pipe (21) away from the controller (2) and the outer wall of the outlet pipe (22) away from the controller (2).

2. The simulated arm for venous puncture training according to claim 1, characterized in that: The connecting component (4) includes mounting block one (41) and mounting block two (42). Mounting block one (41) is coaxially fixedly installed at the free end of the liquid inlet pipe (21), and mounting block two (42) is coaxially fixedly installed at the free end of the liquid outlet pipe (22).

3. The simulated arm for venous puncture training according to claim 2, characterized in that: Two sets of buckles (411) are symmetrically fixedly installed on the outer peripheral wall of the mounting block (41) along the circumferential direction. Two sets of locking blocks (412) are fixedly installed between the two sets of buckles (411). The two sets of buckles (411) and the two sets of locking blocks (412) are symmetrically distributed on the outer peripheral wall of the mounting block (41).

4. The simulated arm for venous puncture training according to claim 3, characterized in that: Two sets of buckles (421) are symmetrically fixed on the outer peripheral wall of the mounting block (42) along the circumferential direction. Two sets of clips (422) are fixedly fixed between the two sets of buckles (421). The two sets of buckles (421) and the two sets of clips (422) are symmetrically distributed on the outer peripheral wall of the mounting block (42), and the positions of buckles (421) and clips (412) correspond to those of clips (412), and the positions of clips (422) and buckles (411) correspond to those of clips (411).

5. A simulated venous puncture training arm capable of simulating different venous states according to claim 4, characterized in that: Annular grooves are respectively provided on the side end face of mounting block one (41) facing mounting block two (42) and the side end face of mounting block two (42) facing mounting block one (41), and a leak-proof rubber gasket is embedded and fixed in the corresponding annular groove.

6. The simulated arm for venous puncture training according to claim 5, characterized in that: The ends of the buckle one (411) that are away from the mounting block one (41) are bent toward the axis of the mounting block one (41) to form hook-shaped structures.

7. A simulated arm for venous puncture training capable of simulating different venous states according to claim 1, characterized in that: The inlet pipe (21) extends into the interior of the simulated arm (1) at one end, and the outlet pipe (22) extends into the interior of the simulated arm (1) at one end, and are connected in series through a connector (23). Multiple simulated tubes (24) for simulating human veins are installed in parallel on the outer wall of the connector (23) away from the inlet pipe (21) and the outlet pipe (22), and the other ends of the multiple simulated tubes (24) are all connected to the connector (23).

8. The simulated arm for venous puncture training according to claim 1, characterized in that: An inflation component (5) for adjusting the state of the simulation tube (24) is fixedly installed on the outer wall of the controller (2). The inflation component (5) includes an air pipe (50) and an air pump. The air pump is fixedly installed on the outer wall of the controller (2). One end of the air pipe (50) is fixedly connected to the air outlet of the air pump, and the other end of the air pipe (50) extends into the inside of the controller (2) and is fixedly connected to the inner wall of the controller (2).

9. A simulated arm for venous puncture training capable of simulating different venous states according to claim 8, characterized in that: Multiple airbags (51) are spaced apart along the length of the simulation tube (24) near the outer wall of the simulation tube (24). The multiple airbags (51) are connected in sequence by flexible hoses, and the air inlet of one of the airbags (51) is fixedly connected to one end of the air tube (50) extending into the controller (2).

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