{"number":"US12702817B2","kindCode":"B2","documentType":"grant","title":{"original":"Heart assist device","english":"Heart assist device"},"abstract":{"original":"A heart assist device comprising a rotary pump housing having a cylindrical bore, a pumping chamber and a motor stator including an electrically conductive coil located within the housing and surrounding a portion of the cylindrical bore. A rotor has a cylindrical shaft with an impeller and one or more rotor magnets located within the shaft that are responsive to the motor stator to drive actuation of the rotor. The housing bore is closely fitted to the outer surface of the shaft forming a hydrodynamic journal bearing with an annular clearance defining a leakage flow path.…","english":"A heart assist device comprising a rotary pump housing having a cylindrical bore, a pumping chamber and a motor stator including an electrically conductive coil located within the housing and surrounding a portion of the cylindrical bore. A rotor has a cylindrical shaft with an impeller and one or more rotor magnets located within the shaft that are responsive to the motor stator to drive actuation of the rotor. The housing bore is closely fitted to the outer surface of the shaft forming a hydrodynamic journal bearing with an annular clearance defining a leakage flow path.…"},"applicants":["STAR BP, INC."],"inventors":["J. Ryan STANFIELD","Michael VLADOVICH"],"filingDate":"2024-01-12","publicationDate":"2026-08-11","grantDate":"2026-08-11","verifiedWithOffice":true,"pdfUrl":"https://downloadpatent.com/pdf/US12702817B2.pdf","pages":{"en":"https://downloadpatent.com/patent/US12702817B2","zh-Hant":"https://downloadpatent.com/zh-Hant/patent/US12702817B2","ja":"https://downloadpatent.com/ja/patent/US12702817B2"}}