Patent ID: 11877718
Assignee: LIFETECH SCIENTIFIC (SHENZHEN) CO., LTD
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 4:
5. The thrombus removal device of claim 4, wherein the first sleeve is provided with a first internal thread, the second sleeve is provided with a second internal thread, a first external thread and a second external thread respectively cooperating with the first internal thread and the second internal thread are provided on the elongate delivery member, the first external thread has a distribution range, the second external thread has a distribution range, the distribution range of the first external thread on the elongate delivery member is larger than the distribution range of the second external thread, a screw pitch of the first internal thread is equal to a screw pitch of the second internal thread, and parts without threads are provided at both the proximal side and the distal side of the first sleeve and both the proximal side and the distal side of the second sleeve within a range of axial movement of the second sleeve.