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A discrete event simulation model for coordinating inventory management and material handling in hospitals
Annals of Operations Research ( IF 4.8 ) Pub Date : 2021-01-02 , DOI: 10.1007/s10479-020-03865-5
Amogh Bhosekar , Sandra Ekşioğlu , Tuğçe Işık , Robert Allen

Inventory management of surgical instruments and material handling decisions of perioperative services are critical to hospitals’ and operating rooms’ (ORs) service levels and costs. However, efficiently coordinating these decisions is challenging due to their interdependence and the uncertainties faced by hospitals. These challenges motivated the development of this study to answer the following research questions: (R1) How does the inventory level of surgical instruments, including owned, borrowed and consigned, impact the service level provided by ORs? (R2): How do material handling activities impact the service level provided by ORs? (R3): How do integrating decisions about inventory and material handling impact the service level provided by ORs? Three discrete event simulation models are developed here to address these questions. Model 1, Current , assumes no coordination of material handling and daily inventory management operations. Model 2, Two Batch , assumes partial coordination, and Model 3, Just-In-Time (JIT), assumes full coordination. These models are verified and validated using real life-data from a partnering hospital. A thorough numerical analysis indicates that, in general, coordination of inventory management of surgical instruments and material handling decisions has the potential to improve the service level provided by ORs. More specifically, a JIT delivery of instruments used in short-duration surgeries leads to lower inventory levels without jeopardizing the service level provided.

中文翻译:

用于协调医院库存管理和物料处理的离散事件仿真模型

手术器械的库存管理和围手术期服务的材料处理决策对医院和手术室 (OR) 的服务水平和成本至关重要。然而,由于这些决策的相互依赖性和医院面临的不确定性,有效地协调这些决策具有挑战性。这些挑战促使本研究开展以回答以下研究问题: (R1) 手术器械的库存水平(包括自有、借用和委托)如何影响手术室提供的服务水平?(R2):物料搬运活动如何影响 OR 提供的服务水平?(R3):关于库存和材料处理的整合决策如何影响 OR 提供的服务水平?这里开发了三个离散事件仿真模型来解决这些问题。模型 1, 当前,不承担物料搬运和日常库存管理操作的协调。模型 2,两批,假设部分协调,而模型 3,即时 (JIT),假设完全协调。这些模型使用来自合作医院的真实生活数据进行验证和验证。全面的数值分析表明,总的来说,手术器械库存管理和材料处理决策的协调有可能提高手术室提供的服务水平。更具体地说,短期手术中使用的器械的 JIT 交付可降低库存水平,而不会危及所提供的服务水平。假设完全协调。这些模型使用来自合作医院的真实生活数据进行验证和验证。全面的数值分析表明,总的来说,手术器械库存管理和材料处理决策的协调有可能提高手术室提供的服务水平。更具体地说,短期手术中使用的器械的 JIT 交付可降低库存水平,而不会危及所提供的服务水平。假设完全协调。这些模型使用来自合作医院的真实生活数据进行验证和验证。全面的数值分析表明,总的来说,手术器械库存管理和材料处理决策的协调有可能提高手术室提供的服务水平。更具体地说,短期手术中使用的器械的 JIT 交付可降低库存水平,而不会危及所提供的服务水平。
更新日期:2021-01-02
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