Inventory decision method of medical consumable SPD management mode based on central warehouse
Patent Information
- Application Number
- CN202410105353.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-25
- Publication Date
- 2026-08-21
- Estimated Expiration
- 2044-01-25
AI Technical Summary
[0004]传统SPD医用耗材管理中的库存决策方法与装置是基于多个独立的院内仓库考虑的，没有考虑到基于中心仓的SPD管理模式中多医院医用耗材协同管理以及医院零库存成本的特征，难以满足大数据与物联网信息背景下的基于中心仓的SPD管理模式下库存决策的要求
[0056]本发明基于中心仓的医用耗材SPD管理模式的库存决策方法，是基于企业实际数据决策需求平稳的医用耗材送货周期；克服了现有技术没有考虑大数据和互联网信息背景下中心仓仓储共享、供应链协同以及第三方管理库存、医院零库存成本等供应链特点的问题；操作简单易实现，求解速度快，准确性高，计算效率高。
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Figure CN117933880B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of medical consumables management technology, specifically an inventory decision-making method for a central warehouse-based medical consumables SPD management model. Background Technology
[0002] Currently, considering the special uses of medical consumables and their characteristics such as shelf life and perishability, insufficient inventory may lead to medical accidents, while excessive inventory may cause waste and loss risks. Therefore, hospitals need to carefully balance the inventory management of medical consumables, avoiding both medical accidents caused by insufficient inventory and resource waste and economic losses caused by excessive inventory. To effectively address this challenge, the introduction of the SPD (Supply, Processing, and Distribution) management model has become a practical solution. The SPD management model integrates the supply, processing, and distribution operations, consolidating internal and external supply chain resources from the hospital in an integrated manner, connecting the entire logistics process of medical consumables from production to hospital consumption and billing. This not only achieves effective collaboration among suppliers, management departments, and medical institutions, but also provides medical institutions with stable and efficient support for medical consumables.
[0003] In the traditional SPD (Supply, Production, and Distribution) management model, each hospital establishes its own in-hospital warehouse to manage medical consumables. However, due to limitations in warehouse space and a lack of collaborative management, the SPD management model based on a central warehouse to manage medical consumables from multiple hospitals has developed rapidly in recent years. Especially with the development of information technologies such as big data and the Internet of Things, by establishing a "central warehouse" within a region as a shared central warehouse for all public hospitals, SPD service providers can provide centralized and unified management and operation of medical consumables for the regional government and hospitals. The specific process of the central warehouse-based SPD management model for medical consumables is as follows: each supplier transports its products to the SPD service provider's central warehouse, bearing its own inventory holding costs and transportation costs to the central warehouse; subsequently, the SPD service provider specifies the quantity of each delivery and delivers the products to each hospital as needed, ensuring that the quantity delivered to the hospitals meets their needs without causing inventory backlog, and bearing the central warehouse's inventory holding costs and transportation costs to the hospitals. It is worth noting that hospitals do not bear any inventory costs, nor do they bear the risk of cost losses due to expired or deteriorated medical consumables.
[0004] Traditional SPD (Self-Produced Device) medical consumables management inventory decision-making methods and devices are based on multiple independent hospital warehouses. They do not take into account the characteristics of multi-hospital medical consumables collaborative management and zero-inventory costs in the central warehouse-based SPD management model. Therefore, they are difficult to meet the inventory decision-making requirements of the central warehouse-based SPD management model in the context of big data and IoT information. Summary of the Invention
[0005] This invention aims to address the shortcomings of existing technologies by proposing an inventory decision-making method for medical consumables based on a central warehouse-based SPD (Supply, Processing, and Distribution) management model. This method aims to provide suppliers and central warehouses with inventory decision-making solutions for medical consumables, taking into account the collaborative role of third-party service providers in managing inventory in the SPD scenario and the supply chain characteristics such as zero inventory costs for hospitals. This will minimize the human resource consumption of suppliers and central warehouses while meeting hospital needs.
[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:
[0007] The present invention discloses an inventory decision-making method for a medical consumables SPD management model based on a central warehouse. The method is applied to a medical consumables SPD management supply chain consisting of N suppliers, one central warehouse, and M hospitals, and is carried out according to the following steps:
[0008] Step 1: Construct a human resource consumption model for each supplier and central warehouse:
[0009] definition This represents the delivery cycle for the i-th supplier to transport goods to the central warehouse. This indicates the delivery cycle from the central warehouse to the j-th hospital;
[0010] when Then, use equations (1) and (2) to construct the human resource consumption function for the i-th supplier respectively. And the human resource consumption function HR of the central warehouse HE :
[0011]
[0012]
[0013] In equation (1), This represents the human resources consumed by the i-th supplier in a single shipment to the central warehouse. d represents the human resources consumed per unit time when medical consumables are stored in the warehouse of the i-th supplier. ij This represents the rate of demand for medical consumables supplied by the i-th supplier from the j-th hospital.
[0014] In equation (2), This represents the human resources consumed in a single transport from the central warehouse to the j-th hospital;
[0015] when and When the number is irrational, construct the human resource consumption function of the i-th supplier using equations (3) and (4) respectively. And the human resource consumption function HR of the central warehouse HG_ir :
[0016]
[0017]
[0018] In equation (4), This represents the human resources consumed per unit time when the medical consumables of the jth hospital are stored in the central warehouse;
[0019] when and When it is a rational number, then let Among them, b ij yes The integer part, express The fractional part, and p ij and q ij All are coprime integers; construct the human resource consumption function of the i-th supplier using equations (5) and (6) respectively. And the human resource consumption function HR of the central warehouse HG_r :
[0020]
[0021]
[0022] when and When the number is irrational, then use equations (7) and (8) to construct the human resource consumption function of the i-th supplier, respectively. And the human resource consumption function HR of the central warehouse HG_r :
[0023]
[0024]
[0025] when and When it is a rational number, then let in, yes The integer part, express The fractional part, and and All are coprime integers; construct the human resource consumption function of the i-th supplier using equations (9) and (10) respectively. And the human resource consumption function HR of the central warehouse HC_r :
[0026]
[0027]
[0028] The constraints for constructing the human resource consumption model for each supplier and central warehouse using equation (11) are as follows:
[0029]
[0030] In equation (11), T This indicates the shortest possible time for any supplier to transport goods to the central warehouse or for the central warehouse to transport goods to any hospital. This indicates the longest possible transport time from the central warehouse to any hospital;
[0031] Step 2: Solve for the optimal decision scheme of the human resource consumption model under various conditions:
[0032] Step 2.1, when Then, using equation (12), the optimal delivery cycle for the i-th supplier to the central warehouse is obtained. And serve as the central warehouse for the optimal delivery cycle to the jth hospital.
[0033]
[0034] Step 2.2, when and When the value is irrational, the optimal delivery cycle for the i-th supplier to the central warehouse can be obtained using equation (13). And the optimal delivery cycle from the central warehouse to the j-th hospital.
[0035]
[0036] Step 2.3, when and When the number is rational, the optimal delivery cycle for the i-th supplier to the central warehouse can be obtained using equation (14). And the optimal delivery cycle from the central warehouse to the j-th hospital.
[0037]
[0038] Step 2.4, when and When the value is irrational, the optimal delivery cycle for the i-th supplier to the central warehouse can be obtained using equation (15). And the optimal delivery cycle from the central warehouse to the j-th hospital.
[0039]
[0040] Step 2.5, when and When the number is rational, the optimal delivery cycle for the i-th supplier to the central warehouse can be obtained using equation (16). And the optimal delivery cycle from the central warehouse to the j-th hospital.
[0041]
[0042] Step 3: Compare the minimum human resource consumption of suppliers and central warehouses under different conditions, and solve for the optimal equilibrium result:
[0043] Step 4: Based on the relative relationship between the optimal ordering cycles of suppliers and central warehouses, follow the process in Step 1 to obtain the minimum human resource consumption required by each supplier and central warehouse as output by the human resource consumption function.
[0044] The inventory decision-making method of the medical consumables SPD management model based on a central warehouse described in this invention is also characterized in that step three includes:
[0045] Step 3.1, assume the initial delivery cycle of the i-th supplier is... according to and The relationship between them determines the corresponding delivery cycle when the central warehouse transports goods to various hospitals.
[0046] when season
[0047] when season
[0048] when At that time, and When it is an irrational number, if or Then let like Then let
[0049] when At that time, and When it is a rational number, let in, for The integer part, for The fractional part, and and If the integers are coprime, then or Then let like At that time, then order
[0050] Step 3.2, based on the results obtained in Step 3.1 Next, determine the optimal delivery cycle for the i-th supplier to the central warehouse.
[0051] when When it is an irrational number, if Then let Otherwise, let
[0052] when When the number is rational, if Then let Otherwise, let
[0053] The present invention provides an electronic device, including a memory and a processor, wherein the memory is used to store a program that supports the processor in executing the inventory decision method, and the processor is configured to execute the program stored in the memory.
[0054] The present invention discloses a computer-readable storage medium on which a computer program is stored, wherein the computer program is executed by a processor to perform the steps of the inventory decision method.
[0055] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0056] This invention presents an inventory decision-making method for medical consumables based on a central warehouse SPD management model. It determines the delivery cycle of medical consumables based on actual enterprise data and stable demand. It overcomes the problems of existing technologies that do not consider the characteristics of central warehouse storage sharing, supply chain collaboration, third-party managed inventory, and zero inventory costs in hospitals under the background of big data and Internet information. It is simple to operate and easy to implement, with fast solution speed, high accuracy, and high computational efficiency. Attached Figure Description
[0057] Figure 1 This is a schematic diagram of the supply chain based on a central warehouse in this invention;
[0058] Figure 2 This is a schematic diagram of the process of the present invention. Detailed Implementation
[0059] In this embodiment, an inventory decision-making method for a medical consumables SPD management model based on a central warehouse is described, such as... Figure 1The diagram illustrates a medical consumables SPD management model supply chain comprised of N suppliers, one central warehouse, and M hospitals. Figure 2 As shown, proceed as follows:
[0060] Step 1: Construct a human resource consumption model for each supplier and central warehouse:
[0061] In this embodiment, the data used comes from a company that provides SPD management services. This company provides SPD services to hospitals by signing contracts with them, connecting upstream suppliers and providing inventory management services to downstream hospitals.
[0062] definition This represents the delivery cycle for the i-th supplier to transport goods to the central warehouse. This indicates the delivery cycle from the central warehouse to the j-th hospital;
[0063] when Then, use equations (1) and (2) to construct the human resource consumption function for the i-th supplier respectively. And the human resource consumption function HR of the central warehouse HE :
[0064]
[0065]
[0066] In equation (1), This represents the human resources consumed by the i-th supplier in a single shipment to the central warehouse. d represents the human resources consumed per unit time when medical consumables are stored in the warehouse of the i-th supplier. ij Let represent the demand rate of the j-th hospital for medical consumables supplied by the i-th supplier. In this embodiment, relevant data from the company, its 10 cooperating suppliers, and 10 hospitals are used to obtain the demand consumption rate of a certain medical consumable, d = 0.85. The single transportation cost for each supplier to the central warehouse is 0.85. The unit inventory holding cost for each supplier is
[0067] In equation (2), This represents the human resources consumed in a single transport from the central warehouse to the j-th hospital; in this embodiment, the single transport cost from the central warehouse to each hospital is...
[0068] when and When the number is irrational, construct the human resource consumption function of the i-th supplier using equations (3) and (4) respectively. And the human resource consumption function HR of the central warehouseHG_ir :
[0069]
[0070]
[0071] In equation (4), This represents the human resources consumed per unit time when the medical consumables of the j-th hospital are stored in the central warehouse; in this embodiment, the unit inventory holding cost of storing consumables from each hospital in the central warehouse is...
[0072] when and When it is a rational number, then let Among them, b ij yes The integer part, express The fractional part, and p ij and q ij All are coprime integers; construct the human resource consumption function of the i-th supplier using equations (5) and (6) respectively. And the human resource consumption function HR of the central warehouse HG_r :
[0073]
[0074]
[0075] when and When the number is irrational, then use equations (7) and (8) to construct the human resource consumption function of the i-th supplier, respectively. And the human resource consumption function HR of the central warehouse HG_r :
[0076]
[0077]
[0078] when and When it is a rational number, then let in, yes The integer part, express The fractional part, and and All are coprime integers; construct the human resource consumption function of the i-th supplier using equations (9) and (10) respectively. And the human resource consumption function HR of the central warehouseHC_r :
[0079]
[0080]
[0081] The constraints for constructing the human resource consumption model for each supplier and central warehouse using equation (11) are as follows:
[0082]
[0083] In equation (11), T This indicates the shortest possible time for any supplier to transport goods to the central warehouse or for the central warehouse to transport goods to any hospital. This represents the longest possible delivery cycle from the central warehouse to any hospital; in this embodiment, the lower bound of the delivery cycle from each supplier to the central warehouse is set as follows. T =1, the upper bound of the delivery cycle from the central warehouse to various hospitals is
[0084] Step 2: Solve for the optimal decision scheme of the human resource consumption model under various conditions:
[0085] Step 2.1, when Then, using equation (12), the optimal delivery cycle for the i-th supplier to the central warehouse is obtained. And serve as the central warehouse for the optimal delivery cycle to the jth hospital.
[0086]
[0087] Step 2.2, when and When the value is irrational, the optimal delivery cycle for the i-th supplier to the central warehouse can be obtained using equation (13). And the optimal delivery cycle from the central warehouse to the j-th hospital.
[0088]
[0089] Step 2.3, when and When the number is rational, the optimal delivery cycle for the i-th supplier to the central warehouse can be obtained using equation (14). And the optimal delivery cycle from the central warehouse to the j-th hospital.
[0090]
[0091] Step 2.4, when and When the value is irrational, the optimal delivery cycle for the i-th supplier to the central warehouse can be obtained using equation (15). And the optimal delivery cycle from the central warehouse to the j-th hospital.
[0092]
[0093] Step 2.5, when and When the number is rational, the optimal delivery cycle for the i-th supplier to the central warehouse can be obtained using equation (16). And the optimal delivery cycle from the central warehouse to the j-th hospital.
[0094]
[0095] Step 3: Compare the minimum human resource consumption of suppliers and central warehouses under different conditions, and solve for the optimal equilibrium result:
[0096] Step 3.1, assume the initial delivery cycle of the i-th supplier is... according to and The relationship between them determines the corresponding delivery cycle when the central warehouse transports goods to various hospitals.
[0097] when season
[0098] when season
[0099] when At that time, and When it is an irrational number, if or Then let like Then let
[0100] when At that time, and When it is a rational number, let in, for The integer part, for The fractional part, and and If the integers are coprime, then or Then let like At that time, then order
[0101] like but It is a rational number. Since -0.96 < 0,
[0102] like but It is a rational number. because so
[0103] Step 3.2, based on the results obtained in Step 3.1 Next, determine the optimal delivery cycle for the i-th supplier to the central warehouse.
[0104] when When it is an irrational number, Substitute into equation (1) to calculate Will Substitute into equation (3) to calculate Therefore, compare the two calculation results: if Then let Otherwise
[0105] when When it is a rational number, Substitute into equation (1) to calculate Will Substitute into equation (5) to calculate Therefore, compare the two calculation results: if Then let Otherwise
[0106] In this embodiment, It is a rational number. Since 25.25 < 36.88, the optimal delivery cycle for the i-th supplier is... The optimal delivery cycle from the central warehouse to the j-th hospital is
[0107] Step 4: Based on the relative relationship between the optimal ordering cycles of suppliers and the central warehouse, obtain the minimum human resource consumption required by each supplier and the central warehouse according to the process in Step 1. In this embodiment, the minimum human resource consumption for each supplier to transport goods to the central warehouse is 25.25; the minimum human resource consumption for the central warehouse to transport goods to each hospital is 151.52.
[0108] In this embodiment, an electronic device includes a memory and a processor. The memory stores a program that supports the processor in executing the above-described method, and the processor is configured to execute the program stored in the memory.
[0109] In this embodiment, a computer-readable storage medium stores a computer program, which is executed by a processor to perform the steps of the above method.
Claims
1. An inventory decision-making method for a central warehouse-based SPD (Supply, Processing, and Distribution) management model for medical consumables, characterized in that, This is applied to a medical consumables SPD management supply chain consisting of N suppliers, one central warehouse, and M hospitals, and is carried out in the following steps: Step 1: Construct a human resource consumption model for each supplier and central warehouse: definition This represents the delivery cycle for the i-th supplier to transport goods to the central warehouse. This indicates the delivery cycle from the central warehouse to the j-th hospital; when Then, use equations (1) and (2) to construct the human resource consumption function for the i-th supplier. And the human resource consumption function HR of the central warehouse HE : In equation (1), This represents the human resources consumed by the i-th supplier in a single shipment to the central warehouse. d represents the human resources consumed per unit time when medical consumables are stored in the warehouse of the i-th supplier. ij This represents the rate of demand for medical consumables supplied by the i-th supplier from the j-th hospital. In equation (2), This represents the human resources consumed in a single transport from the central warehouse to the j-th hospital; when and When the number is irrational, construct the human resource consumption function of the i-th supplier using equations (3) and (4) respectively. And the human resource consumption function HR of the central warehouse HG_ir : In equation (4), This represents the human resources consumed per unit time when the medical consumables of the j-th hospital are stored in the central warehouse; when and When it is a rational number, then let Among them, b ij yes The integer part, express The fractional part, and p ij and q ij All are coprime integers; construct the human resource consumption function of the i-th supplier using equations (5) and (6) respectively. And the human resource consumption function HR of the central warehouse HG_r : when and When the number is irrational, then use equations (7) and (8) to construct the human resource consumption function of the i-th supplier, respectively. And the human resource consumption function HR of the central warehouse HG_r : when and When it is a rational number, then let in, yes The integer part, express The fractional part, and and All are coprime integers; construct the human resource consumption function of the i-th supplier using equations (9) and (10) respectively. And the human resource consumption function HR of the central warehouse HC_r : The constraints for constructing the human resource consumption model for each supplier and central warehouse using equation (11) are as follows: In equation (11), T This indicates the shortest possible time for any supplier to transport goods to the central warehouse or for the central warehouse to transport goods to any hospital. This indicates the longest possible transport time from the central warehouse to any hospital; Step 2: Solve for the optimal decision scheme of the human resource consumption model under various conditions: Step 2.1, when Then, using equation (12), the optimal delivery cycle for the i-th supplier to the central warehouse is obtained. And serve as the central warehouse for the optimal delivery cycle to the jth hospital. Step 2.2, when and When the value is irrational, the optimal delivery cycle for the i-th supplier to the central warehouse can be obtained using equation (13). And the optimal delivery cycle from the central warehouse to the j-th hospital. Step 2.3, when and When the number is rational, the optimal delivery cycle for the i-th supplier to the central warehouse can be obtained using equation (14). And the optimal delivery cycle from the central warehouse to the j-th hospital. Step 2.4, when and When the value is irrational, the optimal delivery cycle for the i-th supplier to the central warehouse can be obtained using equation (15). And the optimal delivery cycle from the central warehouse to the j-th hospital. Step 2.5, when and When the number is rational, the optimal delivery cycle for the i-th supplier to the central warehouse can be obtained using equation (16). And the optimal delivery cycle from the central warehouse to the j-th hospital. Step 3: Compare the minimum human resource consumption of suppliers and central warehouses under different conditions, and solve for the optimal equilibrium result: Step 4: Based on the relative relationship between the optimal ordering cycles of suppliers and central warehouses, follow the process in Step 1 to obtain the minimum human resource consumption required by each supplier and central warehouse as output by the human resource consumption function.
2. The inventory decision-making method for the medical consumables SPD management model based on a central warehouse according to claim 1, characterized in that, Step three includes: Step 3.1, assume the initial delivery cycle of the i-th supplier is... according to and The relationship between them determines the corresponding delivery cycle when the central warehouse transports goods to various hospitals. when season when season when At that time, and When it is an irrational number, if or Then let like Then let when At that time, and When it is a rational number, let in, for The integer part, for The fractional part, and and If the integers are coprime, then or Then let like At that time, then order Step 3.2, based on the results obtained in Step 3.1 Next, determine the optimal delivery cycle for the i-th supplier to the central warehouse. when When it is an irrational number, if Then let Otherwise, let when When the number is rational, if Then let Otherwise, let 3. An electronic device, comprising a memory and a processor, characterized in that, The memory is used to store programs that support the processor in executing the inventory decision method of claim 1 or 2, the processor being configured to execute the programs stored in the memory.
4. A computer-readable storage medium storing a computer program thereon, characterized in that, The computer program is executed by the processor to perform the steps of the inventory decision method of claim 1 or 2.