Catheter Device

• US 20170296369A1
• Filed: 03/14/2017
• Published: 10/19/2017
• Est. Priority Date: 06/16/2005
• Status: Active Grant

• Current Assignee: Angiomed GmbH & Co. Medizintechnik KG
• Original Assignee: Angiomed GmbH & Co. Medizintechnik KG
• Inventors: Dorn, Jurgen, Wuebbeling, Martin
• Granted Patent: US 10,596,020 B2
• Time in Patent Office: Days
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/9517 handle assemblies therefor
• CPC Class Codes: A61F 2/9522 Means for mounting a stent or stent-graft onto or into a placement instrument
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• CPC Class Codes: A61F 2002/9583 Means for holding the stent on the balloon, e.g. using protrusions, adhesives or an outer sleeve
• CPC Class Codes: A61F 2250/0032 differing in radiographic density
• CPC Class Codes: A61F 2250/0098 radio-opaque, e.g. radio-opaque markers
• CPC Class Codes: A61M 25/0108 using radio-opaque or ultrasound markers
• CPC Class Codes: A61M 25/0147 with movable mechanical means, e.g. pull wires
• CPC Class Codes: Y10T 29/49 Method of mechanical manufacture
• CPC Class Codes: Y10T 29/49828 Progressively advancing of work assembly station or assembled portion of work

Abstract

A catheter device having a shaft that extends from a proximal end to a distal end to carry on its distal end a self-expanding implant for intraluminal advance on a guidewire and delivery of the implant to an implant site by proximal withdrawal of a sheath that lies radially outside the implant in the catheter, the catheter including a first shaft element to pull the sheath proximally and a second shaft element to push the implant distally to prevent the implant moving proximally with the sheath when the sheath is pulled proximally, wherein the second shaft element carries a stopper for abutting the implant, the stopper including proximal and distal portions having different radiopacities.

Claims

1. A catheter having a shaft and an implant mounted on a distal end of the shaft wherein the shaft comprises:

an adapter block comprising a first shaft lumen and a second shaft lumen;

a first shaft element having a distal end within the first shaft lumen;

a second shaft element having a proximal end within the second shaft lumen;

and

a sheath that lies over the implant having a proximal end distal of the adapter block.

2. The catheter of claim 1 wherein the shaft further comprises an annulus disposed outside the second shaft element and inside the sheath.

3. The catheter of claim 2 wherein the shaft further comprises a pull wire connected to the annulus.

4. The catheter of claim 3 wherein the shaft further comprises a telescopic tube having a distal end connected to the proximal end of the sheath.

5. The catheter of claim 4 wherein the shaft further comprises a flushing tube connected to a proximal end of the telescopic tube.

6. The catheter of claim 5 wherein the shaft further comprises a guider block comprising a guider block lumen and a guider block guidewire lumen, wherein the guider block is disposed on the first shaft element.

7. The catheter of claim 6 wherein the second shaft element has a double bend.

8. The catheter of claim 7 wherein a distal bend of the second shaft element is proximal of the annulus and a proximal bend of the second shaft element is distal of the adapter block.

9. The catheter of claim 8 wherein the first shaft element has a proximal end disposed at a handle.

10. The catheter of claim 9 wherein the annulus extends proximally of the proximal end of the sheath.

11. The catheter of claim 10 wherein the pull wire is disposed in the first shaft element.

12. The catheter of claim 11 wherein the shaft further comprises a band disposed around the flushing tube connecting the flushing tube to the guider block.

13. The catheter of claim 8 wherein the annulus extends proximally of the proximal end of the sheath.

14. The catheter of claim 13 wherein the pull wire is disposed in the first shaft element.

15. The catheter of claim 14 wherein the shaft further comprises a band disposed around the flushing tube connecting the flushing tube to the guider block.

16. The catheter of claim 7 wherein the first shaft element has a proximal end disposed at a handle.

17. The catheter of claim 16 wherein the annulus extends proximally of the proximal end of the sheath.

18. The catheter of claim 17 wherein the pull wire is disposed in the first shaft element.

19. The catheter of claim 18 wherein the shaft further comprises a band disposed around the flushing tube connecting the flushing tube to the guider block.

20. A catheter having a shaft and an implant mounted on a distal end of the shaft wherein the shaft comprises:

an adapter block comprising a first shaft lumen and a second shaft lumen;

a first shaft element having a distal end within the first shaft lumen and a proximal end disposed at a handle;

a second shaft element having a proximal end within the second shaft lumen;

a sheath that lies over the implant having a proximal end distal of the adapter block;

an annulus disposed outside the second shaft element, disposed inside the sheath, and extending proximally of the proximal end of the sheath;

a pull wire disposed in the first shaft element and connected to the annulus;

a telescopic tube having a distal end connected to the proximal end of the sheath;

a flushing tube connected to a proximal end of the telescopic tube;

a guider block comprising a guider block lumen and a guider block guidewire lumen;

and

a band disposed around the flushing tube connecting the flushing tube to the guider block,

wherein

a distal bend of the second shaft element is proximal of the annulus,

a proximal bend of the second shaft element is distal of the adapter block,

and

the guider block is disposed on the first shaft element.