A blockchain traceability storage method and system for the entire process of radiotherapy molds

Abstract

The present invention discloses a full-process blockchain traceability storage method and system for radiotherapy molds, which relates to the field of medical user management technology. The method includes: establishing a radiotherapy mold storage blockchain platform and deploying an identity authentication smart contract; establishing a medical institution radiotherapy mold management blockchain platform and integrating an Internet of Things data acquisition module; establishing a radiotherapy order collaboration blockchain platform; using a cross-chain relay protocol to establish data mapping between the radiotherapy mold storage blockchain platform and the medical institution management platform, and defining mold status synchronization rules; all inter-platform data transmission is encrypted using a BFT consensus algorithm, and medical institution data access operations generate an unalterable audit chain, and regulatory agencies verify data integrity through zero-knowledge proof technology. The advantage of the present invention is that it builds a trusted traceability closed loop for the entire life cycle of radiotherapy molds through the deep collaboration of blockchain and Internet of Things technologies.

Description

Technical Field

[0001] The present invention relates to the technical field of medical user management, and specifically to a blockchain traceability and storage method and system for the entire process of radiotherapy molds. Background Art

[0002] Existing radiotherapy mold management primarily relies on a combination of decentralized information systems and manual record-keeping. Key production parameters are stored in independent databases, lacking a secure and reliable sharing mechanism. Critical data such as disinfection records and physical deformation status during clinical use is often managed using paper documents or local spreadsheets, resulting in information disjointed across the entire supply chain. This model makes it impossible to verify the mold's actual condition in real time, creating data barriers when collaborating across multiple institutions, severely limiting quality control efficiency and risk response capabilities.

[0003] While existing IoT solutions, such as RFID tags, have been applied to some mold tracking scenarios, single technologies are unlikely to meet the unique requirements of radiotherapy molds: production data is disconnected from clinical operational data, dynamic verification of three-dimensional accuracy lacks automated methods, and the scrapping and disposal process is not effectively connected to environmental regulations. Furthermore, traditional centralized systems cannot prevent the risk of data tampering and lack support for the multifaceted trust system comprised of medical institutions, regulators, and patients. Current blockchain technology applications in the medical field primarily focus on drug distribution, and a comprehensive solution for the full lifecycle of radiotherapy molds, including high-precision traceability, real-time cross-platform status synchronization, and multi-level intelligent risk management, has yet to be developed. Summary of the Invention

[0004] In order to solve the above technical problems, a blockchain traceability and storage method and system for the entire process of radiotherapy molds are provided. This technical solution solves the problem in the above-mentioned existing technology that the actual status of the mold cannot be verified in real time, and there are data barriers when multiple institutions collaborate, which seriously restricts quality control efficiency and risk response capabilities.

[0005] In order to achieve the above objects, the technical solution adopted by the present invention is:

[0006] A blockchain traceability and storage method for the entire radiotherapy mold process, including:

[0007] Establish a blockchain platform for radiotherapy mold storage and deploy an authentication smart contract. This contract implements dynamic permission authentication between medical institutions and regulatory agencies. The platform stores the mold's unique digital identity, production batch number, material biocompatibility report, and 3D precision test data.

[0008] Establish a blockchain platform for radiotherapy mold management in medical institutions, integrate an IoT data acquisition module, and record the mold's positioning coordinates, pressure sensor data, and UV disinfection duration in real time during use, and bind it to the patient's radiotherapy plan ID.

[0009] Establish a collaborative blockchain platform for radiotherapy orders, linking patients’ electronic medical records, radiotherapy dosage plans, and mold usage requirements through smart contracts;

[0010] A cross-chain relay protocol is used to establish data mapping between the radiotherapy mold storage blockchain platform and the medical institution management platform, and to define mold status synchronization rules. The mold status includes: in production, sterilized, in storage, in clinical use, awaiting repair, and scrapped.

[0011] When the radiotherapy mold storage blockchain platform updates the mold's scrap status, it automatically triggers the inventory lock instruction of the medical institution management platform and notifies the radiotherapy order collaboration blockchain platform to stop the scheduling and allocation of the mold;

[0012] Medical institutions submit abnormality reports during the mold application process through the medical institution radiotherapy mold management blockchain platform, including abnormality type codes, medical images with unique digital identities, and environmental sensor logs;

[0013] The radiotherapy order collaborative blockchain platform encrypts and forwards the abnormality report to the radiotherapy mold storage blockchain platform through cross-chain communication. Based on the abnormality report and the preset risk matrix, the radiotherapy mold storage blockchain platform generates a three-level treatment plan and writes it into the blockchain;

[0014] All data transmission between platforms is encrypted using the BFT consensus algorithm. Medical institutions' data access operations generate an unalterable audit chain, and regulatory agencies verify data integrity through zero-knowledge proof technology.

[0015] Preferably, building the radiotherapy mold storage blockchain platform specifically includes:

[0016] Generate a unique digital identity for each mold based on blockchain, linking the material supplier's unique digital identity, sterilization equipment number, and quality inspector's digital certificate;

[0017] Collect data from the entire production process through the edge computing gateway, including: 3D printing layer thickness parameters, laser sintering temperature curve, and deformation detection point cloud data;

[0018] The key data is generated into a Merkle tree hash value and stored in the blockchain, and the original file is encrypted and stored in the IPFS distributed system.

[0019] Preferably, the identity verification smart contract specifically includes:

[0020] When receiving a medical institution's access request, verify the validity period and issuing agency of its digital certificate;

[0021] Perform real-time feature extraction on radiotherapy molds accessed by medical institutions, perform 3D comparison with the mold benchmark CAD model stored on the chain, and calculate deformation similarity;

[0022] When the similarity is ≥95%, access rights are automatically granted; when the similarity is <95%, manual review is initiated.

[0023] Preferably, the establishment of a blockchain platform for radiotherapy mold management in medical institutions specifically includes:

[0024] Implanting RFID chips in the mold to record real-time pressure distribution, temperature and displacement data during use;

[0025] Automatically generate a disinfection record chain after each use, including disinfectant concentration, duration of action and operator ID;

[0026] The usage data will be uploaded through a lightweight blockchain channel and bound to the patient's radiotherapy record hash.

[0027] Preferably, the radiotherapy mold storage blockchain platform generates a three-level treatment plan based on the abnormality report according to the preset risk matrix and writes it into the blockchain, specifically including:

[0028] The radiotherapy mold storage blockchain platform uses an NLP engine to parse the abnormality description text and extract key defect words;

[0029] Risk classification is performed based on key defect words combined with medical image recognition results, and a three-level treatment plan is generated based on the risk classification;

[0030] The processing plan is encoded as a blockchain event, triggering the execution of smart contracts of relevant parties.

[0031] Preferably, the use of a cross-chain relay protocol to establish data mapping between the radiotherapy mold storage blockchain platform and the medical institution management platform specifically includes:

[0032] Create a mold lifecycle state machine on the radiotherapy mold storage blockchain platform and define state transition rules: invoking → invoice completed → sterilization → logistics in progress → institution receipt;

[0033] Deploy a status monitoring oracle on the radiotherapy mold management blockchain platform of medical institutions, and automatically send an early warning signal to the radiotherapy mold storage blockchain platform when the number of mold usage reaches a threshold;

[0034] The cross-chain atomic swap protocol ensures the consistency of the platform status data of both parties, and the arbitration smart contract is triggered when the error exceeds the tolerance.

[0035] Preferably, when the radiotherapy mold storage blockchain platform updates the mold scrapping status, the scrapping stage traceability mechanism is activated, specifically including:

[0036] When the number of times a mold is used reaches the preset upper limit, the radiotherapy mold storage blockchain platform automatically generates an electronic scrapping form with the last mold inspection report attached;

[0037] Call the environmental protection treatment enterprise's unique digital identity to verify its medical waste disposal qualifications, record the transportation vehicle's route trajectory and the treatment workshop video hash;

[0038] The radiotherapy mold storage blockchain platform adds an irreversible scrap status mark to the mold's unique digital identity and simultaneously updates it to the medical institution's radiotherapy mold management blockchain platform.

[0039] Furthermore, a radiotherapy mold full-process blockchain traceability storage system is proposed, which is used to implement the radiotherapy mold full-process blockchain traceability storage method as described above, including:

[0040] A blockchain platform for storing radiotherapy molds, including deployed authentication smart contracts, is used to perform dynamic authorization authentication between medical institutions and regulatory agencies, and store the mold's unique digital identity, production batch number, material biocompatibility report, and 3D precision test data;

[0041] A blockchain platform for managing radiotherapy molds in medical institutions integrates an IoT data acquisition module to record the mold's location coordinates, pressure sensor data, and UV disinfection duration in real time, and binds it to the patient's radiotherapy plan ID.

[0042] A collaborative blockchain platform for radiotherapy orders, linking patients’ electronic medical records, radiotherapy dosage plans, and mold usage requirements through smart contracts;

[0043] A cross-chain relay protocol module is used to establish data mapping between the radiotherapy mold storage blockchain platform and the medical institution management platform, and define mold status synchronization rules;

[0044] The audit chain generation module uses the BFT consensus algorithm to encrypt all inter-platform data transmissions and generates an unalterable audit chain based on the medical institution's data access operations;

[0045] An exception handling engine, in response to an exception report submitted by a medical institution's radiotherapy mold management blockchain platform, forwards the encrypted exception report to the radiotherapy mold storage blockchain platform via cross-chain communication. The platform generates a three-level treatment plan based on a preset risk matrix and writes it to the blockchain;

[0046] The state synchronization control module creates a mold lifecycle state machine and defines state transition rules on the radiotherapy mold storage blockchain platform. At the same time, a state monitoring oracle is deployed on the medical institution management platform to trigger an alert when the number of mold uses reaches a threshold.

[0047] The scrap traceability module automatically generates an electronic scrap form and inspection report when the radiotherapy mold storage blockchain platform updates the mold scrap status, verifies the qualifications of the environmental protection treatment company, and records the transportation trajectory and the processing workshop video hash. At the same time, an irreversible scrap mark is added to the mold's digital identity and synchronized to the medical institution management platform.

[0048] Optionally, the radiotherapy mold storage blockchain platform includes:

[0049] A unique identity generation module generates a blockchain digital identity for each mold, linking the material supplier's identity, sterilization equipment number, and quality inspector's digital certificate;

[0050] Edge computing gateway, used to collect 3D printing layer thickness parameters, laser sintering temperature curves, and deformation detection point cloud data;

[0051] The distributed storage module generates Merkle tree hash values ​​for key data and stores them in the blockchain. The original files are encrypted and stored in the IPFS system.

[0052] Optionally, the medical institution radiotherapy mold management blockchain platform includes:

[0053] RFID chip acquisition module, real-time acquisition of pressure distribution, temperature and displacement data during mold use;

[0054] The disinfection record chain generation module automatically records the disinfectant concentration, duration of action and operator ID and binds it to the patient's radiotherapy record hash.

[0055] Compared with the prior art, the present invention has the following beneficial effects:

[0056] This invention uses deep collaboration between blockchain and IoT technologies to build a trusted traceability closed loop for the entire life cycle of radiotherapy molds, eliminating the risk of radiotherapy dose deviation caused by mold deformation or contamination at the source; based on cross-chain smart contracts, it achieves second-level status synchronization and resource linkage in production, clinical and environmental disposal links, completely eliminating the misuse of medical resources and improving collaborative efficiency; at the same time, relying on the dual architecture of zero-knowledge proof and non-tamperable audit chain, it establishes a multi-party mutually recognized penetrating supervision channel under the premise of strictly protecting patient privacy, thereby significantly reducing compliance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 This is a flowchart of the blockchain traceability and storage method for the entire radiotherapy mold process proposed in Example 1;

[0058] Figure 2 This is a flow chart of the method for building a radiotherapy mold storage blockchain platform proposed in Example 2;

[0059] Figure 3 This is a flow chart of the identity verification smart contract proposed in Example 2;

[0060] Figure 4 This is a flow chart of the method for establishing a blockchain platform for radiotherapy mold management in medical institutions proposed in Example 3;

[0061] Figure 5This is a flow chart of the method for generating a three-level processing solution proposed in Example 3;

[0062] Figure 6 This is a flow chart of the method for establishing data mapping proposed in Example 4;

[0063] Figure 7 This is a flow chart of the method for the scrapping stage traceability mechanism proposed in Example 4. DETAILED DESCRIPTION

[0064] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations. Example 1

[0065] Reference Figure 1 As shown, a blockchain traceability and storage method for the entire process of radiotherapy molds includes:

[0066] Establish a blockchain platform for radiotherapy mold storage and deploy an authentication smart contract. This contract implements dynamic permission authentication between medical institutions and regulatory agencies. The platform stores the mold's unique digital identity, production batch number, material biocompatibility report, and 3D precision test data.

[0067] Establish a trusted traceability starting point, store core production data and dynamically authenticate permissions through blockchain, ensure that mold material safety and processing accuracy can be verified from the source, prevent counterfeit and inferior products from entering the medical sector, and meet the regulatory authorities' needs for real-time verification of key data;

[0068] Establish a blockchain platform for radiotherapy mold management in medical institutions, integrate an IoT data acquisition module, and record the mold's positioning coordinates, pressure sensor data, and UV disinfection duration in real time during use, and bind it to the patient's radiotherapy plan ID.

[0069] Enables full-dimensional monitoring of clinical operations. The IoT collects real-time pressure, displacement, and disinfection data and strongly correlates it with the patient's treatment plan, ensuring that each mold use meets radiotherapy precision requirements, significantly reducing the risk of infection and dose errors caused by physical deformation or insufficient disinfection.

[0070] Establish a collaborative blockchain platform for radiotherapy orders, linking patients’ electronic medical records, radiotherapy dosage plans, and mold usage requirements through smart contracts;

[0071] Open up a channel for intelligent matching of treatment resources. Smart contracts automatically link patient medical records, dosage plans, and mold parameters, eliminating manual scheduling errors and ensuring efficient and accurate execution of personalized radiotherapy plans.

[0072] A cross-chain relay protocol is used to establish data mapping between the radiotherapy mold storage blockchain platform and the medical institution management platform, and to define mold status synchronization rules. Mold status includes: in production, sterilized, in storage, in clinical use, awaiting repair, and scrapped.

[0073] Solve the problem of data silos on multiple platforms. The cross-chain status synchronization mechanism makes the status of the mold throughout its entire life cycle visible, avoiding the risk of clinical misuse caused by delayed status updates.

[0074] When the radiotherapy mold storage blockchain platform updates the mold's scrap status, it automatically triggers the inventory lock instruction of the medical institution management platform and notifies the radiotherapy order collaboration blockchain platform to stop the scheduling and allocation of the mold;

[0075] Establish a resource-fuse safety mechanism whereby scrap status changes automatically trigger inventory lockout and scheduling termination, completely blocking the clinical circulation of failed molds at the system level and achieving medical safety management and control.

[0076] Medical institutions submit abnormality reports during the mold application process through the medical institution radiotherapy mold management blockchain platform, including abnormality type codes, medical images with unique digital identities, and environmental sensor logs;

[0077] Build a standardized reporting system for abnormal data and structured abnormality reports, including unique digital identity images and sensor logs to provide a multi-dimensional evidence chain for risk analysis, improving the efficiency and objectivity of defect diagnosis;

[0078] The radiotherapy order collaborative blockchain platform encrypts and forwards the abnormality report to the radiotherapy mold storage blockchain platform through cross-chain communication. Based on the abnormality report and the preset risk matrix, the radiotherapy mold storage blockchain platform generates a three-level treatment plan and writes it into the blockchain;

[0079] It achieves intelligent risk classification and handling, cross-chain encrypted transmission ensures the trustworthy flow of abnormal data, and automated solution generation based on the risk matrix reduces processing response time to minutes, significantly shortening the traditional manual analysis cycle.

[0080] All data transmission between platforms is encrypted using the BFT consensus algorithm. Medical institutions' data access operations generate an unalterable audit chain, and regulatory agencies verify data integrity through zero-knowledge proof technology.

[0081] Create a regulatory-friendly trust base, BFT encryption and audit chain ensure that the entire operation cannot be tampered with, and zero-knowledge proof technology allows regulators to verify the authenticity of the entire link without obtaining original data, taking into account both privacy protection and compliance auditing. Example 2

[0082] Reference Figure 2As shown, based on the first embodiment, this embodiment points out that building a radiotherapy mold storage blockchain platform specifically includes:

[0083] Generate a unique digital identity for each mold based on blockchain, linking the material supplier's unique digital identity, sterilization equipment number, and quality inspector's digital certificate;

[0084] Collect data from the entire production process through the edge computing gateway, including: 3D printing layer thickness parameters, laser sintering temperature curve, and deformation detection point cloud data;

[0085] The key data is generated into a Merkle tree hash value and stored in the blockchain, and the original file is encrypted and stored in the IPFS distributed system.

[0086] This embodiment builds a three-in-one trusted production traceability architecture on the radiotherapy mold storage blockchain platform, associates suppliers, sterilization equipment and quality inspectors through a unique digital identity to achieve full-factor responsibility anchoring of the mold, collects 3D printing layer thickness / sintering temperature / deformation point cloud in real time through the edge gateway to achieve high-fidelity quality data capture, and builds a tamper-proof evidence storage system through Merkle tree hashing on the chain + IPFS original file encryption, ensuring the millimeter-level manufacturing accuracy and full-process quality verifiability of radiotherapy molds from the source, providing a full-process evidence chain for clinical safety.

[0087] Reference Figure 3 As shown, in this embodiment, the identity verification smart contract specifically includes:

[0088] When receiving a medical institution's access request, verify the validity period and issuing agency of its digital certificate;

[0089] Perform real-time feature extraction on radiotherapy molds accessed by medical institutions, perform 3D comparison with the mold benchmark CAD model stored on the chain, and calculate deformation similarity;

[0090] When the similarity is ≥95%, access rights are automatically granted; when the similarity is <95%, manual review is initiated.

[0091] Through a triple dynamic intelligent authentication mechanism, a strong and secure coupling between the access rights of medical institutions and the physical status of the mold is achieved: real-time verification of digital certificates eliminates the risk of illegal access, deformation monitoring based on 3D comparison improves the accuracy of clinical mold quality control, and intelligent diversion of automatic authorization and manual review compresses the abnormal response speed to seconds, while ensuring the safety of patients' radiotherapy and reducing the burden of manual verification operations, reshaping the paradigm of secure access to medical data. Example 3

[0092] Reference Figure 4 As shown, based on the first embodiment, this embodiment further proposes to establish a medical institution radiotherapy mold management blockchain platform, which specifically includes:

[0093] Implanting RFID chips in the mold to record real-time pressure distribution, temperature and displacement data during use;

[0094] Automatically generate a disinfection record chain after each use, including disinfectant concentration, duration of action and operator ID;

[0095] The usage data will be uploaded through a lightweight blockchain channel and bound to the patient's radiotherapy record hash.

[0096] This embodiment uses a three-in-one clinical operation intelligent traceability system. Based on the dynamic monitoring of physical parameters achieved by implanting an RFID chip in the mold, it builds a triple trusted closed loop of disinfection-use-patient treatment: real-time collected pressure distribution data combined with temperature displacement parameters completely eliminates the risk of radiotherapy positioning error caused by physical deformation of the mold; the automatically generated disinfection record chain solidifies the operation record through the blockchain timestamp, and the lightweight on-chain channel ensures that high-frequency usage data is strongly hashed with the patient's radiotherapy record, forming a reliable diagnosis and treatment record chain, establishing a zero-tampering benchmark for multi-institutional quality control mutual recognition.

[0097] Reference Figure 5 As shown, in this embodiment, the radiotherapy mold storage blockchain platform generates a three-level processing plan based on the abnormal report according to the preset risk matrix and writes it into the blockchain, specifically including:

[0098] The radiotherapy mold storage blockchain platform uses an NLP engine to parse the abnormality description text and extract key defect words;

[0099] Risk classification is performed based on key defect words combined with medical image recognition results, and a three-level treatment plan is generated based on the risk classification. Specifically, the three-level risk treatment plan is as follows;

[0100] Level 1 risk, structural deformation >5%: All use plans for the mold will be automatically frozen, and a recall notice will be sent to associated patients;

[0101] Level 2 risk: material precipitates exceed the standard: the smart contract for allocating spare molds is activated, the compensation amount is calculated, and the supplier's deposit is frozen;

[0102] Level 3 risk, positioning deviation > 2mm: remote push of calibration parameters, extension of warranty period and update of on-chain maintenance records;

[0103] The processing plan is encoded as a blockchain event, triggering the execution of smart contracts of relevant parties.

[0104] This embodiment establishes a multi-level intelligent risk-fuse mechanism. Using natural language analysis and image recognition technology, it accurately determines the level of anomalies and implements a step-by-step approach. For structural instability risks, mold usage is immediately frozen and a proactive recall is initiated, ensuring zero compromise in clinical safety. Material heterogeneity issues are automatically triggered to dispatch backup resources and hold suppliers accountable, ensuring treatment continuity. Minor precision deviations are dynamically corrected through remote calibration. The entire process is encoded as an on-chain event-driven smart contract, automatically executing, forming a seamless intelligent chain from risk identification to closed-loop resolution. Example 4

[0105] Reference Figure 6 As shown, based on the first embodiment, this embodiment further proposes to use a cross-chain relay protocol to establish data mapping between the radiotherapy mold storage blockchain platform and the medical institution management platform, specifically including:

[0106] Create a mold lifecycle state machine on the radiotherapy mold storage blockchain platform and define state transition rules. The state transition rules are: invoking → invoking completed → sterilization → logistics in progress → institution receipt;

[0107] Deploy a status monitoring oracle on the radiotherapy mold management blockchain platform of medical institutions, and automatically send an early warning signal to the radiotherapy mold storage blockchain platform when the number of mold usage reaches a threshold;

[0108] The cross-chain atomic swap protocol ensures the consistency of the platform status data of both parties, and the arbitration smart contract is triggered when the error exceeds the tolerance.

[0109] This embodiment achieves lossless coupling of cross-platform data flows and physical mold status by building an intelligent collaborative hub that synchronizes status throughout the entire life cycle: a digital operation chain is formed based on strictly defined state transition rules, making the entire mold flow visible and traceable; the deployment of a status monitoring oracle breaks through the limitations of single-platform monitoring and realizes intelligent pre-warning of usage frequency thresholds; the cross-chain atomic exchange protocol is combined with the dual guarantee mechanism of the arbitration smart contract to ensure absolute consistency of multi-party data, eliminating clinical scheduling conflicts caused by information delays or conflicts from the bottom up.

[0110] Reference Figure 7 As shown, in this embodiment, when the radiotherapy mold storage blockchain platform updates the mold scrapping status, the scrapping stage traceability mechanism is activated, specifically including:

[0111] When the number of times a mold is used reaches the preset upper limit, the radiotherapy mold storage blockchain platform automatically generates an electronic scrapping form with the last mold inspection report attached;

[0112] Call the environmental protection treatment enterprise's unique digital identity to verify its medical waste disposal qualifications, record the transportation vehicle's route trajectory and the treatment workshop video hash;

[0113] The radiotherapy mold storage blockchain platform adds an irreversible scrap status mark to the mold's unique digital identity and simultaneously updates it to the medical institution's radiotherapy mold management blockchain platform.

[0114] The judicial-grade scrapping traceability closed-loop system constructed in this embodiment realizes the full-process penetrating management of medical waste disposal through blockchain smart contracts: when the mold reaches the usage limit, the electronic scrapping form is automatically triggered and bound to the last inspection report, eliminating the risk of delayed scrapping caused by manual intervention; through the verification of the environmental protection enterprise's digital identity chain and the tamper-proof storage of transportation tracks and processing workshop videos, the compliant disposal of medical waste has verifiable judicial effect; finally, the irreversible scrapping mark is imprinted in the mold's digital identity and synchronized across the entire region, completely blocking the gray path for scrapped molds to flow into the clinic again, creating the industry's first environmental compliance self-certification mechanism, and building an absolutely safe trust chain of "production-use-waste zero" for medical institutions.

[0115] Furthermore, based on the same inventive concept as the above-mentioned radiotherapy mold full-process blockchain traceability and storage method, this solution proposes a radiotherapy mold full-process blockchain traceability and storage system, including:

[0116] A blockchain platform for storing radiotherapy molds, including deployed authentication smart contracts, is used to perform dynamic authorization authentication between medical institutions and regulatory agencies, and store the mold's unique digital identity, production batch number, material biocompatibility report, and 3D precision test data;

[0117] A blockchain platform for managing radiotherapy molds in medical institutions integrates an IoT data acquisition module to record the mold's location coordinates, pressure sensor data, and UV disinfection duration in real time, and binds it to the patient's radiotherapy plan ID.

[0118] A collaborative blockchain platform for radiotherapy orders, linking patients’ electronic medical records, radiotherapy dosage plans, and mold usage requirements through smart contracts;

[0119] A cross-chain relay protocol module is used to establish data mapping between the radiotherapy mold storage blockchain platform and the medical institution management platform, and define mold status synchronization rules;

[0120] The audit chain generation module uses the BFT consensus algorithm to encrypt all inter-platform data transmissions and generates an unalterable audit chain based on the medical institution's data access operations;

[0121] The exception handling engine responds to exception reports submitted by the medical institution's radiotherapy mold management blockchain platform. The radiotherapy order collaboration blockchain platform forwards the encrypted exception report to the radiotherapy mold storage blockchain platform through cross-chain communication. The platform generates a three-level processing plan based on the preset risk matrix and writes it to the blockchain;

[0122] The state synchronization control module creates a mold lifecycle state machine and defines state transition rules on the radiotherapy mold storage blockchain platform. At the same time, a state monitoring oracle is deployed on the medical institution management platform to trigger an alert when the number of mold uses reaches a threshold.

[0123] The scrap traceability module automatically generates an electronic scrap form and inspection report when the radiotherapy mold storage blockchain platform updates the mold scrap status, verifies the qualifications of the environmental protection treatment company, and records the transportation trajectory and the processing workshop video hash. At the same time, an irreversible scrap mark is added to the mold's digital identity and synchronized to the medical institution management platform.

[0124] The radiotherapy mold storage blockchain platform includes:

[0125] A unique identity generation module generates a blockchain digital identity for each mold, linking the material supplier's identity, sterilization equipment number, and quality inspector's digital certificate;

[0126] Edge computing gateway, used to collect 3D printing layer thickness parameters, laser sintering temperature curves, and deformation detection point cloud data;

[0127] The distributed storage module generates Merkle tree hash values ​​for key data and stores them in the blockchain. The original files are encrypted and stored in the IPFS system.

[0128] The blockchain platform for radiotherapy mold management in medical institutions includes:

[0129] RFID chip acquisition module, real-time acquisition of pressure distribution, temperature and displacement data during mold use;

[0130] The disinfection record chain generation module automatically records the disinfectant concentration, duration of action and operator ID and binds it to the patient's radiotherapy record hash.

[0131] In summary, the advantages of the present invention are: through the deep collaboration of blockchain and Internet of Things technologies, a trusted traceability closed loop for the entire life cycle of radiotherapy molds is constructed, eliminating the risk of radiotherapy dose deviation caused by mold deformation or contamination at the source; based on cross-chain smart contracts, status synchronization and resource linkage of production, clinical and environmental protection disposal links are achieved, completely eliminating the misuse of medical resources and improving collaborative efficiency; at the same time, relying on the dual architecture of zero-knowledge proof and non-tamperable audit chain, a multi-party mutually recognized penetrating supervision channel is established under the premise of strictly protecting patient privacy, greatly reducing compliance costs.

[0132] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A radiotherapy mold full-process blockchain traceability storage method, characterized by: include: Establish a blockchain platform for radiotherapy mold storage and deploy an authentication smart contract. This contract implements dynamic permission authentication between medical institutions and regulatory agencies. The platform stores the mold's unique digital identity, production batch number, material biocompatibility report, and 3D precision test data. Establish a blockchain platform for radiotherapy mold management in medical institutions, integrating an IoT data acquisition module to record the mold's positioning coordinates, pressure sensor data, and UV disinfection duration in real time during use, and bind it to the patient's radiotherapy plan ID; Establish a collaborative blockchain platform for radiotherapy orders, linking patients’ electronic medical records, radiotherapy dosage plans, and mold usage requirements through smart contracts; A cross-chain relay protocol is used to establish data mapping between the radiotherapy mold storage blockchain platform and the medical institution management platform, and to define mold status synchronization rules. The mold status includes: in production, sterilized, in storage, in clinical use, awaiting repair, and scrapped. When the radiotherapy mold storage blockchain platform updates the mold's scrap status, it automatically triggers the inventory lock instruction of the medical institution management platform and notifies the radiotherapy order collaboration blockchain platform to stop the scheduling and allocation of the mold; Medical institutions submit abnormality reports during the mold application process through the medical institution radiotherapy mold management blockchain platform, including abnormality type codes, medical images with unique digital identities, and environmental sensor logs; The radiotherapy order collaborative blockchain platform encrypts and forwards the abnormality report to the radiotherapy mold storage blockchain platform through cross-chain communication. Based on the abnormality report and the preset risk matrix, the radiotherapy mold storage blockchain platform generates a three-level treatment plan and writes it into the blockchain; All inter-platform data transmission is encrypted using the BFT consensus algorithm. Medical institutions generate an unalterable audit chain for data access operations, and regulators verify data integrity using zero-knowledge proof technology. The cross-chain relay protocol is used to establish data mapping between the radiotherapy mold storage blockchain platform and the medical institution management platform, specifically including: Create a mold lifecycle state machine on the radiotherapy mold storage blockchain platform and define state transition rules: invoking → invoice completed → sterilization → logistics in progress → institution receipt; Deploy a status monitoring oracle on the radiotherapy mold management blockchain platform of medical institutions, and automatically send an early warning signal to the radiotherapy mold storage blockchain platform when the number of mold usage reaches a threshold; The cross-chain atomic swap protocol ensures the consistency of the platform status data of both parties, and the arbitration smart contract is triggered when the error exceeds the tolerance.

2. A radiotherapy mold full-process blockchain traceability storage method according to claim 1, characterized in that: The construction of the radiotherapy mold storage blockchain platform specifically includes: Generate a unique digital identity for each mold based on blockchain, linking the material supplier's unique digital identity, sterilization equipment number, and quality inspector's digital certificate; Collect data from the entire production process through the edge computing gateway, including: 3D printing layer thickness parameters, laser sintering temperature curve, and deformation detection point cloud data; The key data is generated into a Merkle tree hash value and stored in the blockchain, and the original file is encrypted and stored in the IPFS distributed system.

3. A radiotherapy mold full-process blockchain traceability storage method according to claim 2, characterized in that: The identity verification smart contract specifically includes: When receiving a medical institution's access request, verify the validity period and issuing agency of its digital certificate; Perform real-time feature extraction on radiotherapy molds accessed by medical institutions, perform 3D comparison with the mold benchmark CAD model stored on the chain, and calculate deformation similarity; When the similarity is ≥95%, access rights are automatically granted; when the similarity is <95%, manual review is initiated.

4. A radiotherapy mold full-process blockchain traceability storage method according to claim 3, characterized in that: The establishment of a blockchain platform for radiotherapy mold management in medical institutions specifically includes: Implanting RFID chips in the mold to record real-time pressure distribution, temperature and displacement data during use; Automatically generate a disinfection record chain after each use, including disinfectant concentration, duration of action and operator ID; The usage data will be uploaded through a lightweight blockchain channel and bound to the patient's radiotherapy record hash.

5. A radiotherapy mold full-process blockchain traceability storage method according to claim 4, characterized in that: The radiotherapy mold storage blockchain platform generates a three-level treatment plan based on the abnormal report and the preset risk matrix and writes it into the blockchain, specifically including: The radiotherapy mold storage blockchain platform uses an NLP engine to parse the abnormality description text and extract key defect words; Risk classification is performed based on key defect words combined with medical image recognition results, and a three-level treatment plan is generated based on the risk classification; The processing plan is encoded as a blockchain event, triggering the execution of smart contracts of relevant parties.

6. A radiotherapy mold full-process blockchain traceability storage method according to claim 5, characterized in that: When the radiotherapy mold storage blockchain platform updates the mold scrapping status, the scrapping stage traceability mechanism is activated, specifically including: When the number of times a mold is used reaches the preset upper limit, the radiotherapy mold storage blockchain platform automatically generates an electronic scrapping form with the last mold inspection report attached; Call the environmental protection treatment enterprise's unique digital identity to verify its medical waste disposal qualifications, record the transportation vehicle's route trajectory and the treatment workshop video hash; The radiotherapy mold storage blockchain platform adds an irreversible scrap status mark to the mold's unique digital identity and simultaneously updates it to the medical institution's radiotherapy mold management blockchain platform.

7. A radiotherapy mold full-process blockchain traceability storage system, characterized by: A blockchain traceability and storage method for the entire radiotherapy mold process as described in any one of claims 1 to 6, comprising: A blockchain platform for radiotherapy mold storage, including deployed authentication smart contracts, is used to perform dynamic permission authentication between medical institutions and regulatory agencies, and store the mold's unique digital identity, production batch number, material biocompatibility report, and 3D precision test data; A blockchain platform for managing radiotherapy molds in medical institutions integrates an IoT data acquisition module to record the mold's location coordinates, pressure sensor data, and UV disinfection duration in real time, and binds it to the patient's radiotherapy plan ID. A collaborative blockchain platform for radiotherapy orders, linking patients’ electronic medical records, radiotherapy dosage plans, and mold usage requirements through smart contracts; A cross-chain relay protocol module is used to establish data mapping between the radiotherapy mold storage blockchain platform and the medical institution management platform, and define mold status synchronization rules; The audit chain generation module uses the BFT consensus algorithm to encrypt all inter-platform data transmissions and generates an unalterable audit chain based on the medical institution's data access operations; An exception handling engine, in response to an exception report submitted by a medical institution's radiotherapy mold management blockchain platform, the radiotherapy order collaboration blockchain platform forwards the encrypted exception report to the radiotherapy mold storage blockchain platform via cross-chain communication. The platform generates a three-level treatment plan based on a preset risk matrix and writes it to the blockchain; The state synchronization control module creates a mold lifecycle state machine and defines state transition rules on the radiotherapy mold storage blockchain platform. At the same time, a state monitoring oracle is deployed on the medical institution management platform to trigger an alert when the number of mold uses reaches a threshold. The scrap traceability module automatically generates an electronic scrap form and inspection report when the radiotherapy mold storage blockchain platform updates the mold scrap status, verifies the qualifications of the environmental protection treatment company, and records the transportation trajectory and the processing workshop video hash. At the same time, an irreversible scrap mark is added to the mold's digital identity and synchronized to the medical institution management platform.

8. A radiotherapy mold full-process blockchain traceability storage system according to claim 7, characterized in that: The radiotherapy mold storage blockchain platform includes: A unique identity generation module generates a blockchain digital identity for each mold, linking the material supplier's identity, sterilization equipment number, and quality inspector's digital certificate; Edge computing gateway, used to collect 3D printing layer thickness parameters, laser sintering temperature curves, and deformation detection point cloud data; The distributed storage module generates Merkle tree hash values ​​for key data and stores them in the blockchain. The original files are encrypted and stored in the IPFS system.

9. A radiotherapy mold full-process blockchain traceability storage system according to claim 8, characterized in that: The medical institution radiotherapy mold management blockchain platform includes: RFID chip acquisition module, real-time acquisition of pressure distribution, temperature and displacement data during mold use; The disinfection record chain generation module automatically records the disinfectant concentration, duration of action and operator ID and binds it to the patient's radiotherapy record hash.

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