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3d printing-based frugal manufacturing of glass pipettes for minimally invasive delivery of therapeutics to the brain

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Neuroprotection 2023年第1期1卷 58-65页

作者： Guanda Qiao david Gulisashvili Anna Jablonska Guiling Zhao Miroslaw Janowski Piotr Walczak Yajie Liang department of diagnostic Radiology and Nuclear Medicine University of Maryland School of MedicineBaltimoreMarylandUSA Laboratory of Molecular Cardiology Department of PhysiologyCenter for Biomedical Engineering and TechnologyUniversity of Maryland School of MedicineBaltimoreMarylandUSA

Objective:Intracerebral delivery of agents in liquid form is usually achieved through commercially available and durable metal needles.However,their size and texture may contribute to mechanical brain damage.Glass pipettes with a thin tip may significantly reduce injection-associated brain damage but require access to prohibitively expensive programmable pipette pullers.This study is to remove the economic barrier to the application of minimally invasive delivery of therapeutics to the brain,such as chemical compounds,viral vectors,and cells.Methods:We took advantage of the rapid development of free educational online resources and emerging low-cost 3d printers by designing an affordable pipette puller(APP)to remove the cost obstacle.Results:We showed that our APP could produce glass pipettes with a sharp tip opening down to 20μm or less,which is sufficiently thin for the delivery of therapeutics into the brain.A pipeline from pipette pulling to brain injection using low-cost and open-source equipment was established to facilitate the application of the APP.Conclusion:In the spirit of frugal science,our device may democratize glass pipette-puling and substantially promote the application of minimally invasive and precisely controlled delivery of therapeutics to the brain for finding more effective therapies of brain diseases.

关键词： 3d-printable brain injection frugal science glass pipette pulling

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