公开(公告)号：US10857273B2

公开(公告)日：2020-12-08

申请号：US16317809

申请日：2017-07-19

Applicant: TC1 LLC

Inventor： William V. Hodges ,  Ian McEachern ,  Eric T. Lee

IPC: A61M1/10 ,  A61M1/12

Abstract: Blood pump devices having improved rotary seals for sealing a bearing assembly supporting a rotor provided herein. Such rotary seals are particularly suited for use in blood pump devices that include rotors having cantilevered supported through a sealed mechanical bearing disposed outside a blood flow path of the device to avoid thrombus formation caused by blood contact with the bearing. The rotary seal can include a first and second face seal that are preloaded with a deflectable compliance member incorporated into the pump housing or a pair of magnets. Such rotary seals can instead or further utilize tight fitment between components or a bio-absorbable fill material to seal an interface between the rotor shaft and pump housing to seal the bearing assembly from fluid flowing through the pump.

公开(公告)号：US20220409879A1

公开(公告)日：2022-12-29

申请号：US17864194

申请日：2022-07-13

Applicant: TC1 LLC

Inventor： William V. Hodges ,  Ian McEachern ,  Eric T. Lee

IPC: A61M60/422 ,  A61M60/148 ,  A61M60/827 ,  A61M60/825 ,  A61M60/508 ,  A61M60/178 ,  A61M60/237 ,  A61M60/818 ,  A61M60/205

Abstract: Blood pump devices having improved rotary seals for sealing a bearing assembly supporting a rotor provided herein. Such rotary seals are particularly suited for use in blood pump devices that include rotors having cantilevered supported through a sealed mechanical bearing disposed outside a blood flow path of the device to avoid thrombus formation caused by blood contact with the bearing. The rotary seal can include a first and second face seal that are preloaded with a deflectable compliance member incorporated into the pump housing or a pair of magnets. Such rotary seals can instead or further utilize tight fitment between components or a bio-absorbable fill material to seal an interface between the rotor shaft and pump housing to seal the bearing assembly from fluid flowing through the pump.

公开(公告)号：US11413443B2

公开(公告)日：2022-08-16

申请号：US16993043

申请日：2020-08-13

Applicant: TC1 LLC

Inventor： William V. Hodges ,  Ian McEachern ,  Eric T. Lee

IPC: A61M60/818 ,  A61M60/205 ,  A61M60/148 ,  A61M60/422

Abstract: Blood pump devices having improved rotary seals for sealing a bearing assembly supporting a rotor provided herein. Such rotary seals are particularly suited for use in blood pump devices that include rotors having cantilevered supported through a sealed mechanical bearing disposed outside a blood flow path of the device to avoid thrombus formation caused by blood contact with the bearing. The rotary seal can include a first and second face seal that are preloaded with a deflectable compliance member incorporated into the pump housing or a pair of magnets. Such rotary seals can instead or further utilize tight fitment between components or a bio-absorbable fill material to seal an interface between the rotor shaft and pump housing to seal the bearing assembly from fluid flowing through the pump.

公开(公告)号：US20210008262A1

公开(公告)日：2021-01-14

申请号：US16993043

申请日：2020-08-13

Applicant: TC1 LLC

Inventor： William V. Hodges ,  Ian McEachern ,  Eric T. Lee

IPC: A61M1/10 ,  A61M1/12

Abstract: Blood pump devices having improved rotary seals for sealing a bearing assembly supporting a rotor provided herein. Such rotary seals are particularly suited for use in blood pump devices that include rotors having cantilevered supported through a sealed mechanical bearing disposed outside a blood flow path of the device to avoid thrombus formation caused by blood contact with the bearing. The rotary seal can include a first and second face seal that are preloaded with a deflectable compliance member incorporated into the pump housing or a pair of magnets. Such rotary seals can instead or further utilize tight fitment between components or a bio-absorbable fill material to seal an interface between the rotor shaft and pump housing to seal the bearing assembly from fluid flowing through the pump.

公开(公告)号：US10702641B2

公开(公告)日：2020-07-07

申请号：US15196436

申请日：2016-06-29

Applicant: TC1 LLC

Inventor： Eric T. Lee ,  William V. Hodges ,  Yi-Ren Woo

IPC: F04D3/00 ,  A61M1/10 ,  A61M1/12

Abstract: Blood pumps for ventricular assist devices employ a hollow rotor to impel blood through the blood pump. A blood pump includes a housing having a housing inlet, a housing outlet, and a housing blood flow channel through which the housing inlet and the housing outlet are in fluid communication. A motor stator is disposed around the housing blood flow channel and operable to generate a rotating magnetic field. A hollow rotor is disposed within the housing blood flow channel and rotated via the rotating magnetic field. The hollow rotor has a rotor circumferential wall enclosing a rotor blood flow channel. The hollow rotor has at least one rotor blade extending inwardly from the rotor circumferential wall. The at least one rotor blade is configured to impel blood through the rotor blood flow channel when the hollow rotor is rotated via the rotating magnetic field.