Device for creating openings in pressurized vessels with deformable walls

• US 8,273,078 B2
• Filed: 03/05/2008
• Issued: 09/25/2012
• Est. Priority Date: 03/05/2007
• Status: Active Grant

• Current Assignee: Amt Medical B.V.
• Original Assignee: AMJ, BV
• Inventors: Muenker, Frank Michael
• Primary Examiner(s): Johnson, III, Henry M
• Assistant Examiner(s): LIPITZ, JEFFREY BRIAN
• Application Number:
  US12/042,386
• Publication Number:
  US 20080249516A1
• Time in Patent Office: 1,665 Days
• Field of Search: 606/7, 606/10, 606/153
• US Class Current: 606/10
• CPC Class Codes: A61B 17/0469 Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
• CPC Class Codes: A61B 17/062 Needle manipulators
• CPC Class Codes: A61B 17/11 for performing anastomosis; Buttons for anastomosis
• CPC Class Codes: A61B 17/32053 Punch like cutting instruments, e.g. using a cylindrical or oval knife A61B17/326 takes precedence; trepans A61B17/1695; for use on the cornea A61F9/007
• CPC Class Codes: A61B 18/24 with a catheter A61B18/26, A61B18/28 take precedence
• CPC Class Codes: A61B 2017/1107 for blood vessels
• CPC Class Codes: A61B 2017/1121 adapted for performing tissue or graft eversion
• CPC Class Codes: A61B 2017/1135 End-to-side connections, e.g. T- or Y-connections Y-shaped blood vessel prostheses A61F2002/065
• CPC Class Codes: A61B 2017/306 holding by means of suction
• CPC Class Codes: A61B 2018/00291 using suction
• CPC Class Codes: A61B 2018/00386 Coronary vessels

Abstract

The catheter (1) has a fastener (10) for firmly holding the wall (19) of vessel (18) when it is cut by optical fibers (3). The fastener (10) has an engaging element which can be a pin (20), roughened surface (23), spiral grooves (27), dendritic grooves (31), adhesive surface (34) or pointed pins (38).

Claims

1. A catheter for performing arteriotomies on intracorporal vessels comprising:

(a) a tubular body having a proximal end and a distal end;

(b) a ring shaped cutting device positioned at the distal end of the tubular body for cutting a hole in a wall of a vessel to be treated;

(c) a bore inside the tubular body and the cutting device; and

(d) a fastener positioned in the bore at the distal end of the bore, the fastener adapted to firmly hold a portion of the wall of the vessel that forms the hole when a vacuum suction is applied through the bore and the hole is cut in the wall of the vessel by the cutting device;

wherein the fastener is a porous member mounted in the bore and a protrusion extends outward from the member towards the distal end of the bore.

2. The catheter of claim 1 wherein

the cutting device is a laser device.

3. The catheter of claim 2 wherein

the laser device is optical fibers which form a ring that extends outward from the distal end of the tubular body.

4. The catheter of claim 1 wherein

the tubular body has a stopper on an outside wall of the tubular the distal end of the tubular body.

5. The catheter of claim 1 wherein

the tubular body has an inner sleeve, an outer sleeve and an annulus between the inner sleeve and the outer sleeve;

and

the cutting device is optical fibers which are positioned in the annulus and form a ring that extends outward at the distal end of the tubular body.

6. The catheter of claim 1 wherein

the fastener comprises a porous member mounted in the bore and a protrusion extending outwardly from the member towards the distal end of the bore wherein the protrusion is a plurality of protrusions.

7. The catheter of claim 1 wherein

the fastener is a porous member having grooved surface facing the distal end of the bore.

8. The catheter of claim 1 wherein

the fastener is a porous member having an adhesive surface facing the distal end of the bore.

9. The catheter of claim 1 wherein

the fastener is a porous member having a roughened surface facing the distal end of the bore.

10. The catheter of claim 1

wherein the fastener comprises a protrusion that is at least one pin and extends from the plate a distance of about 0.1 to 5 times of a wall thickness of the intracorporal vessel and the distal end of the pin is about 0% to 120% of the inner diameter of the bore from the planar area defined by the distal end of the cutting device.

11. The catheter of claim 10, wherein the pin extends from the plate a distance of about 0.5 to 2 times of the wall thickness of the intracorporal vessel.

12. The catheter of claim 10, wherein the distal end of the pin is about 0% to 40%, preferably about 5% to 30% or about 10% to 25% of the inner diameter of the bore from the planar area defined by the distal end of the cutting device.

13. The catheter of claim 1, wherein the fastener comprises a porous member having a porous central portion and a non-porous rim surrounding the porous central portion, and wherein, viewed in radial direction of the bore, the rim extends over at least 10% of the radius of the bore.

14. The catheter of claim 6, wherein the protrusion is a pin and wherein the fastener comprises a porous member having a porous central portion and a non-porous rim surrounding the porous central portion, and wherein a width of the rim is about 70% or more of the length of the pin.

15. The catheter of claim 13, wherein the rim has a surface that is grooved and/or roughened and/or adhesive.

16. The catheter of claim 14, wherein the rim has a surface that is grooved and/or roughened and/or adhesive.

17. The catheter according to claim 1, wherein the fastener comprises a plate positioned in the bore and a protrusion fixed to the plate and extending towards the distal end of the bore, wherein the protrusion is provided with a channel extending from the proximal side of the plate to the distal end of the protrusion and wherein the distal end of the protrusion is optionally provided with cuts extending from the channel in a radial direction of the bore.