Main path analysis in the field of blood transfusion based on patent citation network
ZHANG Ting
XU Dong-zi
YANG Xiao-yi
YAN Shu
PAN Li-zi
OUYANG Zhao-lian
Abstract：Objective:To explore the main paths in the field of blood transfusion based on patent citation network.Methods:A patent citation network in the field of blood transfusion was constructed.The search path link count(SPLC)was used to calculate the traversal weight.By using two path search methods,the global search and local search,the global main path,global key-route path,local forward main path,local backward main path and local key-route path were analyzed to explore the technology development trajectory.Results:There were 5 176 patent applications in the field of blood transfusion,including 22 099 patent citations.The number of patent applications increased year by year,and technological innovation was active.It was expected that the number of patent applications would reach 1 735 and 3 773 respectively in 2025 and 2030.The technological innovation hotspots involved blood collection and transfusion devices,blood component processing methods,etc.The United States was both an important technology exporter and an important technology importer.The field of blood transfusion drew on relevant scientific research to solve blood diseases,including blood purification,hematopoiesis stem cell,pluripotent stem cells and hematopoietic microenvironment.Analysis of the main paths in the field of blood transfusion showed that the local key-route main path was consistent with the global main path,with the largest number of patents,nine pieces,including one technical route,pertaining to blood transfusion assessment methods;the local forward main path and the local backward main path were consistent with the global key-route main path,with seven patents,including one technical route,regarding blood loss monitoring and estimation methods.Conclusion:This study analyzed the main paths in the field of blood transfusion,identified the technology development trajectory,and provided information support for blood transfusion research from the perspective of information science.
Keywords：blood transfusionpatent citation networkmain path analysis(MPA)search path link countglobal searchlocal search
Publication Date：2024-09-30
Online Publishing Date：2026-08-14(First online date of this platform, not the publication date of the document)
Pages：9( 1866-1874 )