US 11,986,609 B2
External drive unit for an implantable heart assist pump
Gerd Spanier, Berlin (DE); and Maxim Daschewski, Berlin (DE)
Assigned to ECP ENTWICKLUNGSGESELLSCHAFT MBH, Aachen (DE)
Appl. No. 16/603,527
Filed by ECP ENTWICKLUNGSGESELLSCHAFT MBH, Charlottenburg (DE)
PCT Filed Apr. 6, 2018, PCT No. PCT/EP2018/058941
§ 371(c)(1), (2) Date Oct. 7, 2019,
PCT Pub. No. WO2018/185330, PCT Pub. Date Oct. 11, 2018.
Application 16/603,527 is a continuation of application No. 15/482,513, filed on Apr. 7, 2017, granted, now 10,926,013.
Claims priority of application No. 17187358 (EP), filed on Aug. 22, 2017; and application No. 17187359 (EP), filed on Aug. 22, 2017.
Prior Publication US 2020/0390953 A1, Dec. 17, 2020
Int. Cl. A61M 1/00 (2006.01); A61M 25/02 (2006.01); A61M 60/13 (2021.01); A61M 60/148 (2021.01); A61M 60/237 (2021.01); A61M 60/414 (2021.01); A61M 60/825 (2021.01); A61M 60/829 (2021.01); A61M 60/871 (2021.01); A61M 60/88 (2021.01)
CPC A61M 25/02 (2013.01) [A61M 60/13 (2021.01); A61M 60/148 (2021.01); A61M 60/237 (2021.01); A61M 60/414 (2021.01); A61M 60/825 (2021.01); A61M 60/829 (2021.01); A61M 60/871 (2021.01); A61M 60/88 (2021.01); A61M 2025/0266 (2013.01); A61M 2205/04 (2013.01); A61M 2205/3666 (2013.01); A61M 2205/8262 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An external drive unit for an implantable heart assist pump comprising:
an external drive unit housing comprising:
a motor housing arranged inside the external drive unit housing;
a drive shaft, wherein the drive shaft is transcutaneous;
a motor for driving a heart assist pump, wherein the motor is configured to connect to the heart assist pump via the drive shaft and wherein the motor is arranged inside the motor housing; and
a catheter surrounding the drive shaft; and
a purge line for injecting a purge medium into a lumen of the catheter or into a space between the catheter and the drive shaft,
wherein the purge line extends through an opening in a side of the external drive unit housing and extends between the external drive unit housing and the motor housing wherein the purge line is in thermal contact with at least one of an outer surface of the motor housing or an outer surface of a proximal section of the catheter, and
wherein at least one of the motor housing or the proximal section of the catheter are arranged within the external drive unit housing.