Arm puncture teaching model

Abstract

The utility model discloses an arm puncture teaching model, which is characterized in that an arm main body is provided with a venous duct and an arterial duct according to human blood vessel distribution, an arm sheath wraps the arm main body, the venous duct and the arterial duct, the arm sheath is non-transparent, the venous duct and the arterial duct both penetrate through the axilla of the arm model, and the arterial duct and the arterial duct are connected with the arm main body. The venous catheter and the arterial catheter are arranged in the blood storage bag and branch to form liquid inlet branch pipes and liquid outlet branch pipes, the liquid inlet branch pipes of the venous catheter and the arterial catheter are communicated with an outlet of the circulating pump, an inlet of the circulating pump is communicated with an outlet of the blood storage bag, the liquid outlet branch pipes of the venous catheter and the arterial catheter are communicated with an inlet of the blood storage bag, and each liquid inlet branch pipe and each liquid outlet branch pipe are provided with valves. The interiors of the vein tube and the artery tube are in a positive pressure state, metal contact sensors are embedded below the puncture positions corresponding to the radial artery tube model and the main vein tube models, and the metal contact sensors are connected with an alarm. According to the utility model, blood return after successful arm blood vessel puncture can be simulated, and whether puncture fails due to excessive puncture can be judged.

Description

Technical Field

[0001] The utility model relates to the technical field of medical models, in particular to an arm puncture teaching model. Background Art

[0002] In the clinical nursing teaching of medical education, arteriovenous puncture is an invasive operation technology. It is one of the routine nursing operations that clinical medical staff must master. Medical staff need to practice a lot to master this basic skill, but the operation practice on humans has great limitations and dangers. The key to arteriovenous puncture technology is to hit the target with one shot. To hit the target with one shot, you can only practice repeatedly in normal times. The simulated arm is the most practical practice tool. The simulated arm in the prior art mainly solves the problem of low success rate of arteriovenous puncture. For example, the prior art with publication number CN110033681A and invention name arm vein puncture training model uses venous imaging to enable the operator to perform puncture under the guidance of imaging to improve the success rate of venous puncture. However, the model cannot simulate the return of blood from arm puncture, and the puncture depth is also difficult to determine, and it is impossible to judge whether excessive puncture causes puncture failure. Utility Model Content

[0003] In view of the problems existing in the above-mentioned prior art, the utility model aims to provide an arm puncture teaching model, which can not only simulate the blood return after successful arm blood vessel puncture, but also determine whether the puncture failure is caused by excessive puncture.

[0004] The utility model proposes an arm puncture teaching model, comprising an arm model, a blood storage bag and a circulation pump, the arm model comprises an arm body and an arm skin, the arm body is provided with a venous tube and an arterial tube according to the distribution of human blood vessels, the arm skin is wrapped around the arm body, the venous tube and the arterial tube, the arterial tube comprises a radial artery tube model, the venous tube comprises a plurality of main venous tube models, and also comprises a controller and an alarm, the arm skin and the venous tube are both made of elastic silicone material or latex material, and the arm skin is non-transparent, the venous tube and the arterial tube are both passed through the axilla of the arm model, and are both branched to form a liquid inlet branch and a liquid outlet branch, the venous tube and the arterial tube are The inlet branches are all connected to the outlet of the circulation pump, the inlet of the circulation pump is connected to the outlet of the blood storage bag, the outlet branches of the venous tube and the arterial tube are all connected to the inlet of the blood storage bag, each inlet branch and each outlet branch are equipped with a valve, and the interiors of the venous tube and the arterial tube are in a positive pressure state, metal contact sensors are buried below the puncture positions corresponding to the radial artery tube model and each main venous tube model, the metal contact sensors are arranged close to the bottom of the corresponding models, and a vibrator is also buried at the puncture position corresponding to the radial artery tube model, the signal output end of the metal contact sensor is connected to the signal receiving end of the controller, and the alarm data end of the controller is connected to the alarm.

[0005] In the above scheme: the vibrator is a wireless remote control vibrator with controllable amplitude. The vibrator is used to simulate the pulsation of the radial artery. Medical staff judge the puncture position of the radial artery based on the pulsation position. However, the pulsation strength of each person's radial artery is different, so the amplitude of the vibrator can be adjusted to simulate the pulsation of the radial artery of different people. When adjusting the teaching test, the amplitude of the vibrator can also be adjusted to adjust the difficulty of the test.

[0006] In the above scheme: the arm puncture teaching model also includes a display, the venous tube and the arterial tube are equipped with a hydraulic sensor for monitoring the internal pressure thereof, the signal output end of the hydraulic sensor is connected to the signal receiving end of the controller, the display data end of the controller is connected to the display, and the valve opening of the liquid inlet branch and the corresponding liquid outlet branch can be adjusted, thereby accurately adjusting the internal pressure of the venous tube or the arterial tube.

[0007] In the above scheme: the internal pressure of the venous tube is 40-140 mmHg, and the internal pressure of the arterial tube is 90-120 mmHg, so as to simulate the pressure of the venous blood vessels and arterial blood vessels of the human arm.

[0008] In the above scheme: the arm body and the arterial tube are both made of silicone material, which is similar to the texture of the human body, so that the touch of the model is close to that of a real person, giving the user a realistic feeling and helping to improve clinical operation skills.

[0009] The beneficial effects of the utility model are: 1. It can be used as a model of the blood circulation system of the human arm for medical staff to practice skills such as puncture and acupuncture; it can also be used as a teaching test model. After the trainee performs puncture, if blood returns in the puncture needle, it means that the puncture is successful, and if there is no blood return, it means that the puncture has failed. At the same time, if the alarm sounds an alarm, it means that the puncture is excessive and the corresponding blood vessel is penetrated, which is also a puncture failure. 2. The arm skin and the venous tube are both made of elastic silicone material or latex material. By adjusting the valve opening on the inlet branch and the outlet branch of the venous tube, the internal pressure of the venous tube can be adjusted. The venous tube can be filled and bulged under pressure (the effect is even better after tying a compression cuff on the model arm), thereby supporting the arm skin to form a convex mark to simulate the situation where some veins are filled and bulged after a compression cuff is tied on the human arm. 3. The vibrator is used to simulate the pulsation of the radial artery. The pulsation intensity can be set to match the actual pulsation intensity of the human radial artery. Medical staff can determine the puncture position of the radial artery based on the pulsation position and conduct radial artery puncture training or teaching tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the external structure of the arm model.

[0011] Figure 2It is a schematic diagram of the overall structure of the utility model.

[0012] Figure 3 This is a schematic diagram of the distribution of arteries in the main body of the arm.

[0013] Figure 4 This is a schematic diagram of the distribution of veins in the main body of the arm.

[0014] Figure 5 It is a partial cross-sectional view of the arm body. DETAILED DESCRIPTION

[0015] like Figure 1 —5 shows an arm puncture teaching model, which is mainly composed of an arm model A, a blood storage bag 1, a circulating pump 2, a controller 6, a display 11 and an alarm 7.

[0016] The arm model A includes an arm body 3 and an arm skin. The arm body 3 is provided with a vein 4 and an artery 5 according to the distribution of blood vessels in the human body. The arm skin is wrapped around the arm body 3, the vein 4 and the artery 5. The artery 5 includes a radial artery model 51, and the vein 4 includes a plurality of main vein models 41.

[0017] The arm skin and the venous tube 4 are both made of elastic silicone material or latex material, and the arm skin is non-transparent. The arm body 3 and the arterial tube 5 are both made of silicone material, which is similar to the texture of the human body, making the touch of the model close to that of a real person, giving the user a realistic feeling and helping to improve clinical operation skills.

[0018] The venous tube 4 and the arterial tube 5 both pass through the axilla of the arm model A and branch to form an inlet branch a and an outlet branch b. The inlet branch a of the venous tube 4 and the arterial tube 5 are both connected to the outlet of the circulation pump 2, the inlet of the circulation pump 2 is connected to the outlet of the blood storage bag 1, and the outlet branch b of the venous tube 4 and the arterial tube 5 are both connected to the inlet of the blood storage bag 1. Each inlet branch a and each outlet branch b are equipped with a valve 8.

[0019] The interiors of the venous tube 4 and the arterial tube 5 are both in a positive pressure state, with the internal pressure of the venous tube 4 being 40-140 mmHg and the internal pressure of the arterial tube 5 being 90-120 mmHg, so as to simulate the pressure of the venous vessels and arterial vessels of the human arm.

[0020] Both the venous tube 4 and the arterial tube 5 are equipped with a hydraulic sensor for monitoring the internal pressure thereof. The signal output end of the hydraulic sensor is connected to the signal receiving end of the controller 6. The display data end of the controller 6 is connected to the display 11. The valve opening of the liquid inlet branch a and the corresponding liquid outlet branch b can be adjusted, thereby accurately adjusting the internal pressure of the venous tube 4 or the arterial tube 5.

[0021] Metal contact sensors 9 are buried below the puncture positions corresponding to the radial artery tube model 51 and each main vein tube model 41. The metal contact sensors 9 are set close to the bottom of the corresponding models. The signal output end of the metal contact sensor 9 is connected to the signal receiving end of the controller 6, and the alarm data end of the controller 6 is connected to the alarm 7.

[0022] A vibrator 10 is also buried at the puncture position corresponding to the radial artery tube model 51. The vibrator 10 is a wireless remote-controlled vibrator with controllable amplitude. The vibrator is used to simulate the pulsation of the radial artery. Medical staff judge the puncture position of the radial artery based on the pulsation position. However, the pulsation strength of each person's radial artery is different, so the amplitude of the vibrator can be adjusted to simulate the pulsation of the radial artery of different people. When adjusting the teaching test, the amplitude of the vibrator can also be adjusted to adjust the difficulty of the test.

Claims

1. An arm puncture teaching model, comprising an arm model (A), a blood storage bag (1) and a circulation pump (2), wherein the arm model (A) comprises an arm body (3) and an arm skin, wherein the arm body (3) is provided with a venous tube (4) and an arterial tube (5) according to the distribution of blood vessels in the human body, wherein the arm skin is wrapped around the arm body (3), the venous tube (4) and the arterial tube (5), wherein the arterial tube (5) comprises a radial artery tube model (51), and the venous tube (4) comprises a plurality of main venous tube models (41), wherein: The arm model (A) also includes a controller (6) and an alarm (7). The arm skin and the venous tube (4) are both made of elastic silicone material or latex material, and the arm skin is non-transparent. The venous tube (4) and the arterial tube (5) are both passed through the axilla of the arm model (A) and are branched to form an inlet branch (a) and an outlet branch (b). The inlet branch (a) of the venous tube (4) and the arterial tube (5) are both connected to the outlet of the circulation pump (2), and the inlet of the circulation pump (2) is connected to the outlet of the blood storage bag (1). The outlet branch (b) of the venous tube (4) and the arterial tube (5) are both connected to the inlet of the blood storage bag (1). The branch pipe (a) and each liquid outlet branch pipe (b) are equipped with a valve (8), and the interior of the venous tube (4) and the arterial tube (5) are both in a positive pressure state. A metal contact sensor (9) is buried below the corresponding puncture positions of the radial artery tube model (51) and each main venous tube model (41). The metal contact sensor (9) is set close to the bottom of the corresponding model, and a vibrator (10) is also buried at the puncture position corresponding to the radial artery tube model (51). The signal output end of the metal contact sensor (9) is connected to the signal receiving end of the controller (6), and the alarm data end of the controller (6) is connected to the alarm (7).

2. The arm puncture teaching model according to claim 1, characterized in that: The vibrator (10) is a wireless remote-controlled vibrator capable of controlling the amplitude.

3. The arm puncture teaching model according to claim 1, characterized in that: The arm puncture teaching model also includes a display (11), and the venous tube (4) and the arterial tube (5) are both equipped with hydraulic sensors for monitoring their internal pressures, and the signal output end of the hydraulic sensor is connected to the signal receiving end of the controller (6), and the display data end of the controller (6) is connected to the display (11).

4. The arm puncture teaching model according to claim 3, characterized in that: The internal pressure of the venous tube (4) is 40-140 mmHg, and the internal pressure of the arterial tube (5) is 90-120 mmHg.

5. The arm puncture teaching model according to claim 1, characterized in that: The arm body (3) and the arterial tube (5) are both made of silicone material.

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