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Application of magnetically actuated self-clearing catheter for rapid in situ blood clot clearance in hemorrhagic stroke treatment.
Yang, Qi; Enríquez, Ángel; Devathasan, Dillon; Thompson, Craig A; Nayee, Dillan; Harris, Ryan; Satoski, Douglas; Obeng-Gyasi, Barnabas; Lee, Albert; Bentley, R Timothy; Lee, Hyowon.
Afiliação
  • Yang Q; Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, 47907, USA.
  • Enríquez Á; Center for Implantable Devices, Purdue University, West Lafayette, IN, 47907, USA.
  • Devathasan D; Birck Nanotechnology Center, Purdue University, West Lafayette, IN, 47907, USA.
  • Thompson CA; School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, 47907, USA.
  • Nayee D; Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, 47907, USA.
  • Harris R; Center for Implantable Devices, Purdue University, West Lafayette, IN, 47907, USA.
  • Satoski D; Birck Nanotechnology Center, Purdue University, West Lafayette, IN, 47907, USA.
  • Obeng-Gyasi B; College of Veterinary Medicine, Purdue University, West Lafayette, IN, 47907, USA.
  • Lee A; College of Veterinary Medicine, Purdue University, West Lafayette, IN, 47907, USA.
  • Bentley RT; Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, 47907, USA.
  • Lee H; Center for Implantable Devices, Purdue University, West Lafayette, IN, 47907, USA.
Nat Commun ; 13(1): 520, 2022 01 26.
Article em En | MEDLINE | ID: mdl-35082280
Maintaining the patency of indwelling drainage devices is critical in preventing further complications following an intraventricular hemorrhage (IVH) and other chronic disease management. Surgeons often use drainage devices to remove blood and cerebrospinal fluid but these catheters frequently become occluded with hematoma. Using an implantable magnetic microactuator, we created a self-clearing catheter that can generate large enough forces to break down obstructive blood clots by applying time-varying magnetic fields. In a blood-circulating model, our self-clearing catheters demonstrated a > 7x longer functionality than traditional catheters (211 vs. 27 min) and maintained a low pressure for longer periods (239 vs. 79 min). Using a porcine IVH model, the self-clearing catheters showed a greater survival rate than control catheters (86% vs. 0%) over the course of 6 weeks. The treated animals also had significantly smaller ventricle sizes 1 week after implantation compared to the control animals with traditional catheters. Our results suggest that these magnetic microactuator-embedded smart catheters can expedite the removal of blood from the ventricles and potentially improve the outcomes of critical patients suffering from often deadly IVH.
Assuntos

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Trombose / Drenagem / Catéteres / Acidente Vascular Cerebral Hemorrágico Limite: Animals / Humans / Male Idioma: En Revista: Nat Commun Assunto da revista: BIOLOGIA / CIENCIA Ano de publicação: 2022 Tipo de documento: Article País de afiliação: Estados Unidos

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Trombose / Drenagem / Catéteres / Acidente Vascular Cerebral Hemorrágico Limite: Animals / Humans / Male Idioma: En Revista: Nat Commun Assunto da revista: BIOLOGIA / CIENCIA Ano de publicação: 2022 Tipo de documento: Article País de afiliação: Estados Unidos