A wearable peritoneal puncture model and its control system
By using a wearable peritoneal puncture model, combined with dynamic anatomical simulation and multimodal feedback, the problems of anatomical variation and single feedback in existing technologies are solved, and the clinical authenticity and quantifiable effect of training are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHONGSHAN HOSPITAL FUDAN UNIV
- Filing Date
- 2026-03-23
- Publication Date
- 2026-06-02
AI Technical Summary
Existing paracentesis models cannot simulate anatomical variations in different body types and disease states, have a single feedback mechanism, lack concrete simulation of complications, and make it difficult to quantify training effects.
A wearable abdominal puncture model is used, including a wearable carrier layer, an anatomical simulation layer, a sensing and feedback layer, and a data acquisition layer. Combined with 3D-printed organs and pneumatic feedback, dynamic anatomical simulation and multimodal feedback are achieved, and data-driven teaching is conducted via Bluetooth communication and an APP.
It achieves realistic simulation of different body types and disease states, visualizes complications, and quantifies training effects, thereby improving trainees' risk prediction awareness and emergency response capabilities.
Smart Images
Figure CN122135627A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of clinical teaching technology for abdominal paracentesis, specifically to a wearable abdominal paracentesis model and its control system. Background Technology
[0002] Abdominal paracentesis is a crucial skill for diagnosing and treating ascites and peritoneal infections. Medical students need extensive practice to master key aspects such as needle insertion angle, assessment of breakthrough sensation, and management of complications. However, opportunities to perform this procedure on real patients are limited. Abdominal paracentesis models are simulation devices used for medical skills training, designed to help trainees practice abdominal paracentesis safely and effectively. However, existing models only simulate anatomical locations and lack dynamic feedback such as peritoneal breakthrough sensation and changes in tissue resistance, which can lead to trainees developing mechanical needle insertion habits.
[0003] The existing technical bottlenecks of wearable peritoneal puncture models are as follows:
[0004] Insufficient structural fidelity: Most wearable devices use a fixed module design, which cannot simulate anatomical variations in different body types and disease states (such as liver enlargement in patients with cirrhosis causing deviation of the puncture path).
[0005] The feedback mechanism is too simplistic: it only provides vibration or light to indicate operational errors, and lacks simulations of concrete complications such as bleeding after accidental puncture of blood vessels and leakage of intestinal fluid after intestinal injury, making it difficult for trainees to develop risk prediction awareness.
[0006] Lack of data-driven teaching: Key parameters such as puncture angle and needle insertion speed cannot be quantitatively recorded, and teachers can only evaluate through subjective observation, making it difficult to standardize the training effect. Summary of the Invention
[0007] In view of the deficiencies in the prior art, the purpose of this invention is to provide a wearable peritoneal puncture model and its control system for clinical operation skills training, which can make the training closer to clinical reality.
[0008] To solve the above problems, the technical solution of the present invention is as follows:
[0009] A wearable peritoneal puncture model includes a wearable carrier layer, an anatomical simulation layer, a sensing and feedback layer, and a data acquisition layer. The main structure of the wearable carrier layer adopts a vest-like frame with an operation window in the front. The anatomical simulation layer includes a mesh support, organ modules, a peritoneal simulation membrane, a reservoir fixation frame, and a quick-connect interface. The sensing and feedback layer is equipped with angle sensors, displacement sensors, and pressure sensors, which are respectively embedded in the liver, spleen, and free area of the peritoneum, and are attached to the subperitoneal surface. The data acquisition layer uses an independent controller to control the wearable peritoneal puncture model.
[0010] Preferably, the main body of the wearable carrier layer vest is made of 40 Shore A silicone outer layer and 0.5mm PU film epidermis, with a built-in honeycomb mesh support, suitable for standardized patients with a height of 150-190cm and a waist circumference of 65-110cm.
[0011] Preferably, the vest body and the organ module adopt a double fixing structure of magnetic attraction and guide rail. The organ module can slide left and right along the guide rail to adjust its position, and the magnetic attraction ensures stability during training.
[0012] Preferably, the sensing and feedback layer further includes a breakthrough dynamic simulation unit, which consists of a miniature air pump, a pressure sensor and a sealing airbag. When the puncture needle penetrates the peritoneum, the sensor triggers the air pump to reduce the airbag pressure from 5 kPa to 1 kPa within 0.2 seconds, generating a "feeling of emptiness" tactile feedback, and simultaneously triggering a standardized patient-end vibration prompt.
[0013] Furthermore, the present invention also provides a control system for a wearable abdominal paracentesis model, including a student operating terminal, an anatomical simulation module, a sensor acquisition unit, a Bluetooth communication module, a teacher's APP, a feedback execution module, a standardized patient-side controller, and a power supply module for powering each functional module; the sensor acquisition unit integrates multiple sensors and synchronizes them to the teacher's APP via the Bluetooth communication module; the teacher's APP has a built-in clinical operation standard database, automatically comparing the student's operation with the standard path; the standardized patient-side controller is wirelessly connected to the main body of the wearable abdominal paracentesis model via the Bluetooth communication module; and the anatomical simulation module and the sensor acquisition unit are connected to the main control board via a bus.
[0014] Preferably, the sensing and acquisition unit integrates an angle sensor, a displacement sensor, and a pressure sensor to record puncture angle, needle insertion speed, depth, and force data in real time.
[0015] Preferably, the standardized patient-end controller is a wireless handheld controller. When the device triggers a complication, the controller automatically plays the corresponding sound effect, such as the groaning sound when bleeding occurs. The standardized patient can manually press a button to trigger emergency scenarios such as patient agitation and decreased blood pressure.
[0016] Preferably, all sensors of the anatomical simulation module and the sensing and acquisition unit are connected to the main control board via an I2C bus, and the wiring uses flexible ribbon cables to adapt to the bending and deformation requirements of the vest.
[0017] Compared with existing technologies, the wearable abdominal puncture model of the present invention fills the gaps in existing technologies through three major innovations: dynamic anatomical simulation, multimodal feedback, and data-driven teaching: 1) It uses modular 3D printed organs and pneumatic feedback to simulate the touch of real tissues; 2) It combines standardized patient performance with liquid / pneumatic systems to realize the dynamic presentation of complications; 3) Bluetooth data transmission and APP analysis enable the operation process to be traceable and quantifiable. Attached Figure Description
[0018] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0019] Figure 1 This is a structural block diagram of the wearable peritoneal puncture model of the present invention;
[0020] Figure 2 This is a block diagram of the control system structure of the wearable abdominal puncture model of the present invention. Detailed Implementation
[0021] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.
[0022] Specifically, the present invention provides a wearable peritoneal puncture model, such as... Figure 1 As shown, the model includes a wearable carrier layer 1, an anatomical simulation layer 2, a sensing and feedback layer 3, and a data acquisition layer 4.
[0023] The main structure of the wearable carrier layer 1 adopts a vest-style frame with a 15×20cm operation window in the front. The vest body is made of 40 Shore A silicone outer layer and 0.5mm PU membrane epidermis, with a built-in honeycomb mesh support, suitable for standardized patients with a height of 150-190cm and a waist circumference of 65-110cm. The key puncture areas (McBurney's point in the left lower abdomen, periumbilical area, etc.) are equipped with a detachable operation panel for easy replacement of consumables.
[0024] The anatomical simulation layer 2 includes a mesh support, organ modules, peritoneal simulation membrane, reservoir fixation frame, and quick-connect interface; the vest body and organ modules adopt a double fixation structure of magnetic attraction and guide rail, the organ modules can slide left and right along the guide rail to adjust their position, and the magnetic attraction ensures stability during training.
[0025] The sensing and feedback layer 3 is equipped with a sensor module, a breakthrough dynamic simulation unit, a fluid simulation subsystem, and a flow control unit. The sensor module includes an angle sensor, a displacement sensor, and a pressure sensor, which are respectively embedded in the liver, spleen, and free area of the abdominal cavity, and are attached to the subperitoneal surface. The breakthrough dynamic simulation unit consists of a miniature air pump, a pressure sensor, and a sealed air bladder. When the puncture needle penetrates the peritoneum, the sensor triggers the air pump to reduce the air bladder pressure from 5 kPa to 1 kPa within 0.2 seconds, generating a "feeling of emptiness" tactile feedback, and simultaneously triggering a standardized patient-side vibration prompt. The fluid simulation subsystem includes three independent reservoirs to store ascites, simulated blood, and intestinal fluid, respectively. The flow control unit uses an SV01-5V normally closed solenoid valve, and the flow rate can be adjusted by the controller at the teacher's end to simulate different degrees of complications such as "slow bleeding" and "active bleeding."
[0026] The data acquisition layer 4 uses an independent controller, and the main control board is fixed to the bottom of the box by four copper pillars; the lithium battery is attached to the bottom of the control board with double-sided tape and connected to the main board through the PH2.0 terminal.
[0027] Furthermore, the present invention also provides a control system for a wearable peritoneal puncture model, such as... Figure 2 As shown, the system includes a student operating terminal, an anatomical simulation module, a sensor acquisition unit, a Bluetooth communication module, a teacher-side APP, a feedback execution module, a standardized patient-side controller, and a power supply module for powering each functional module.
[0028] The sensing and acquisition unit integrates an angle sensor, a displacement sensor, and a pressure sensor, which records parameters such as puncture angle, needle insertion speed, depth, and dwell time in real time (including three sets of data: angle, depth, and force), and synchronizes them to the teacher's APP via a Bluetooth communication module.
[0029] The teacher-side app has a built-in clinical operation standard database, which automatically compares trainees' operations with standard procedures, generates three-dimensional force-angle-time curves, and supports six preset case scenarios, including cirrhotic ascites and tuberculous peritonitis. Trainees can customize the color, viscosity, and complication trigger thresholds of the puncture fluid (e.g., triggering "intestinal injury" when the needle depth is >5cm). Teachers can manually adjust the simulated fluid flow rate via a slider, or trigger sudden scenarios such as "increased bleeding" or guide standardized patients to "patient agitation," training trainees' emergency response capabilities.
[0030] The standardized patient-end controller is a wireless handheld controller. The standardized patient-end controller is wirelessly connected to the main body of the wearable abdominal puncture model via a Bluetooth communication module. When the device triggers complications, the controller automatically plays corresponding sound effects, such as groans during bleeding. The standardized patient can manually press a button to trigger emergency scenarios such as patient agitation and decreased blood pressure.
[0031] The anatomical simulation module and all sensors of the sensing and acquisition unit are connected to the main control board via an I2C bus. The wiring uses flexible ribbon cables to adapt to the bending and deformation requirements of the vest.
[0032] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.
Claims
1. A wearable peritoneal puncture model, characterized in that, The model comprises a wearable carrier layer, an anatomical simulation layer, a sensing and feedback layer, and a data acquisition layer. The main structure of the wearable carrier layer adopts a vest-like frame with an operation window in the front. The anatomical simulation layer includes a mesh support, organ modules, a peritoneal simulation membrane, a reservoir fixation frame, and a quick-connect interface. The sensing and feedback layer is equipped with angle sensors, displacement sensors, and pressure sensors, which are respectively embedded in the liver, spleen, and free area of the abdominal cavity, and are attached to the subperitoneal surface. The data acquisition layer uses an independent controller to control the wearable peritoneal puncture model.
2. The wearable peritoneal puncture model according to claim 1, characterized in that, The main body of the vest, which is used as the wearable carrier layer, is made of 40 Shore A silicone outer layer and 0.5mm PU film epidermis, with a built-in honeycomb mesh support, and is suitable for standardized patients with a height of 150-190cm and a waist circumference of 65-110cm.
3. The wearable abdominal puncture model according to claim 1, characterized in that, The vest body and organ module adopt a double fixing structure of magnetic attraction and guide rail. The organ module can slide left and right along the guide rail to adjust its position, and the magnetic attraction ensures stability during training.
4. The wearable peritoneal puncture model according to claim 1, characterized in that, The sensing and feedback layer also includes a breakthrough dynamic simulation unit, which consists of a miniature air pump, a pressure sensor and a sealed airbag. When the puncture needle penetrates the peritoneum, the sensor triggers the air pump to reduce the airbag pressure from 5 kPa to 1 kPa within 0.2 seconds, generating a "feeling of emptiness" tactile feedback, and simultaneously triggering a standardized patient-end vibration prompt.
5. A control system for a wearable abdominal paracentesis model, characterized in that, The system includes a student operating terminal, an anatomical simulation module, a sensor acquisition unit, a Bluetooth communication module, a teacher's app, a feedback execution module, a standardized patient-side controller, and a power supply module for powering each functional module. The sensor acquisition unit integrates multiple sensors and synchronizes them to the teacher's app via the Bluetooth communication module. The teacher's app has a built-in clinical operation standard database that automatically compares student operations with standard procedures. The standardized patient-side controller is wirelessly connected to the main body of the wearable abdominal puncture model via the Bluetooth communication module. The anatomical simulation module and the sensor acquisition unit are connected to the main control board via a bus.
6. The control system of the wearable abdominal puncture model according to claim 5, characterized in that, The sensing and acquisition unit integrates an angle sensor, a displacement sensor, and a pressure sensor to record puncture angle, needle insertion speed, depth, and force data in real time.
7. The control system of the wearable abdominal paracentesis model according to claim 5, characterized in that, The standardized patient-end controller is a wireless handheld controller. When the device triggers complications, the controller automatically plays corresponding sound effects, such as groans during bleeding. Standardized patients can manually press buttons to trigger emergency scenarios such as patient agitation and decreased blood pressure.
8. The control system of the wearable peritoneal puncture model according to claim 5, characterized in that, The anatomical simulation module and all sensors of the sensing and acquisition unit are connected to the main control board via an I2C bus. The wiring uses flexible ribbon cables to adapt to the bending and deformation requirements of the vest.