公开(公告)号：US20250025666A1

公开(公告)日：2025-01-23

申请号：US18909448

申请日：2024-10-08

Applicant: MEDTRONIC CV LUXEMBOURG S.A.R.L.

Inventor： Susheel DESHMUKH

IPC: A61M25/00 ,  A61F2/24 ,  A61F2/966 ,  A61L29/04 ,  B29C48/00 ,  B29C48/09 ,  B29L31/00

Abstract: A catheter shaft includes an inner layer defining an innermost circumferential surface of the catheter shaft and defining a lumen of the catheter shaft, and an outer layer defining an outermost circumferential surface of the catheter shaft. The inner layer is formed by a first polymer having a first durometer and a first melting temperature. The outer layer is formed by alternating first and second segments of the first polymer and a second polymer, respectively, that alternate in a circumferential direction. The second polymer has a second durometer softer than the first durometer and a second melting temperature lower than the first melting temperature. Each segment of the alternating first and second segments extend in an axial direction for substantially an entire length of the catheter shaft. A method of forming the catheter shaft via extrusion is also disclosed.

公开(公告)号：US20240033474A1

公开(公告)日：2024-02-01

申请号：US18487274

申请日：2023-10-16

Applicant: MEDTRONIC CV LUXEMBOURG S.A.R.L.

Inventor： Susheel DESHMUKH

IPC: A61M25/00 ,  B29C48/09 ,  B29C48/00 ,  A61F2/24 ,  A61F2/966 ,  A61L29/04

CPC classification number: A61M25/0045 ,  B29C48/09 ,  B29C48/0021 ,  A61F2/2436 ,  A61F2/966 ,  A61L29/049 ,  A61M25/0009 ,  B29L2031/7542

Abstract: A catheter shaft includes an inner layer defining an innermost circumferential surface of the catheter shaft and defining a lumen of the catheter shaft, and an outer layer defining an outermost circumferential surface of the catheter shaft. The inner layer is formed by a first polymer having a first durometer and a first melting temperature. The outer layer is formed by alternating first and second segments of the first polymer and a second polymer, respectively, that alternate in a circumferential direction. The second polymer has a second durometer softer than the first durometer and a second melting temperature lower than the first melting temperature. Each segment of the alternating first and second segments extend in an axial direction for substantially an entire length of the catheter shaft. A method of forming the catheter shaft via extrusion is also disclosed.

公开(公告)号：US20210170141A1

公开(公告)日：2021-06-10

申请号：US16705318

申请日：2019-12-06

Applicant: Medtronic CV Luxembourg S.a.r.l.

Inventor： Susheel DESHMUKH

IPC: A61M25/00 ,  A61F2/24 ,  A61F2/966 ,  A61L29/04 ,  B29C48/00 ,  B29C48/09

Abstract: A catheter shaft includes an inner layer defining an innermost circumferential surface of the catheter shaft and defining a lumen of the catheter shaft, and an outer layer defining an outermost circumferential surface of the catheter shaft. The inner layer is formed by a first polymer having a first durometer and a first melting temperature. The outer layer is formed by alternating first and second segments of the first polymer and a second polymer, respectively, that alternate in a circumferential direction. The second polymer has a second durometer softer than the first durometer and a second melting temperature lower than the first melting temperature. Each segment of the alternating first and second segments extend in an axial direction for substantially an entire length of the catheter shaft. A method of forming the catheter shaft via extrusion is also disclosed.