Micro-cutting systems for forming cuts in products

• US 9,662,798 B2
• Filed: 05/23/2013
• Issued: 05/30/2017
• Est. Priority Date: 12/08/2008
• Status: Active Grant

• Current Assignee: Scientia Vascular, LLC
• Original Assignee: Scientia Vascular, LLC
• Inventors: Christian, Ryan, Gasbarro, James A., Christian, Jeff, Boehmke, Scott K., Lippert, John
• Primary Examiner(s): Alie, Ghassem
• Application Number:
  US13/901,375
• Publication Number:
  US 20130255456A1
• Time in Patent Office: 1,468 Days
• Field of Search: 83 76, 83 13, 83 62, 83 621, 83310, 83 39, 83578, 83614, 83485, 83 23, 83209, 83211, 83520, 83821, 83 766, 83 73, 451 18, 451 15, 451 8, 451 9, 451 41, 451 12, 451 1301, 700101, 700 99, 700100, 700121, 438 16, 438113, 438114, 438 33, 382145
• CPC Class Codes: A61M 2025/09108 Methods for making a guide wire
• CPC Class Codes: A61M 25/0015 Making lateral openings in a catheter tube, e.g. holes, slits, ports, piercings of guidewire ports; Methods for processing the holes, e.g. smoothing the edges
• CPC Class Codes: A61M 25/09 Guide wires
• CPC Class Codes: B26D 1/24 coacting with another disc cutter
• CPC Class Codes: B26D 5/007 Control means comprising cameras, vision or image processing systems
• CPC Class Codes: B26D 5/20 with interrelated action between the cutting member and work feed
• CPC Class Codes: B26D 5/34 scanning being effected by a photosensitive device
• CPC Class Codes: B26D 7/06 Arrangements for feeding or delivering work of other than sheet, web, or filamentary form feeding or discharging sheets, webs, or filaments B65H
• CPC Class Codes: B26D 7/0683 specially adapted for elongated articles
• CPC Class Codes: B26F 1/0053 by machining, e.g. cutting, grinding, projections on the tube wall
• CPC Class Codes: B26F 1/0061 whereby the tube moves axially or radially B26F1/0038, B26F1/0046, B26F1/0053 take precedence
• CPC Class Codes: B26F 1/0076 and the tool rotates
• CPC Class Codes: Y10T 83/0448 With subsequent handling [i.e., of product]
• CPC Class Codes: Y10T 83/051 Relative to same tool
• CPC Class Codes: Y10T 83/145 Including means to monitor product
• CPC Class Codes: Y10T 83/173 Arithmetically determined program
• CPC Class Codes: Y10T 83/4458 Work-sensing means to control work-moving or work-stopping means
• CPC Class Codes: Y10T 83/4463 Work-sensing means to initiate tool feed
• CPC Class Codes: Y10T 83/828 With illuminating or viewing means for work
• CPC Class Codes: Y10T 83/8878 Guide

Abstract

Micro-cutting machines for forming cuts in catheters, guidewires, and similar products, are disclosed, including a micro-cutting machine that can directly control the dimensions of the resultant beams being cut into products, and that can capture images of each cut for feedback control and accuracy verification.

Claims

1. A micro-cutting system for forming cuts along a length of a catheter or guidewire stock material to form a catheter or guidewire product, comprising:

a cutting apparatus configured to form a plurality of pairs of grooves substantially perpendicular to a longitudinal axis of the stock material, the cutting apparatus including;

a first cutting member,

a second cutting member, and

one or more motors operably coupled to said first cutting member and said second cutting member,

wherein said one or more motors are configured to control, prior to cutting the stock material, a relative gap distance along a lateral axis between said first cutting member and said second cutting member, and

wherein said one or more motors are further configured to move said first cutting member and said second cutting member substantially parallel to a vertical axis during cutting of the stock material to form each pair of grooves in the stock material, each pair of grooves extending in a direction substantially perpendicular to the longitudinal axis of the stock material and each pair of grooves being separated along the lateral axis by the gap distance so as to leave a resultant beam between the grooves in the stock material; and

a stock material controller configured to hold the stock material and feed the stock material along the longitudinal axis through said cutting apparatus to enable the formation of successive pairs of grooves along a longitudinal length of the stock material, said stock material controller being further configured to selectively rotate the stock material by one or more predetermined angles around the longitudinal axis between cuts to form one or more offsets between cuts.

2. The system of claim 1, wherein at least one of said first cutting member or said second cutting member includes a blade having a blade thickness between about 0.002 inches and about 0.008 inches.

3. The system of claim 1, wherein the resultant beam is selected from the group consisting of a radius cut beam, a straight cut beam, a convex cut beam, and a spiral cut beam.

4. The system of claim 1, wherein at least one of said one or more predetermined angles is between about 5 degrees and 90 degrees.

5. The system of claim 1, wherein at least one of said one or more predetermined angles is between about 5 degrees and about 45 degrees.

6. The system of claim 1, wherein said stock material controller includes a rotational motor that selectively rotates the stock material by said one or more predetermined angles around the longitudinal axis.

7. The system of claim 6, wherein said rotational motor rotates the stock material at predetermined speed around the longitudinal axis as said first cutting blade and said second cutting blade simultaneously form each pair of grooves.

8. The system of claim 1, wherein said stock material controller includes at least one feed motor configured to hold the stock material and feed the stock material forward along the longitudinal axis a predetermined distance.

9. The system of claim 8, wherein said at least one feed motor feeds the stock material forward along the longitudinal axis at a predetermined speed.

10. The system of claim 1, further comprising an electronic controller communicatively coupled to said cutting apparatus and said stock material controller, said electronic controller configured to control operation of said cutting apparatus and said stock material controller.

11. The system of claim 10, wherein said one or more predetermined angles is controlled by said electronic controller.

12. The system of claim 1, wherein said first cutting blade and said second cutting blade are offset from one another so that the formed grooves are each on a different plane.

13. The system of claim 1, further comprising:

an imaging system collecting an image data of the stock material and the resultant beam after one or more of the plurality of pairs of grooves are made in the stock material and transmitting said image data; and

a processor communicatively coupled to said imaging system receiving the image data from the imaging system and measuring at least an uncut diameter of the stock material and a width of the resultant beam.

14. The system of claim 13, wherein said imaging system includes a camera positioned on a first side of an imaging area and one or more light sources positioned on a first side and on an opposite side of said imaging area, said one or more light sources illuminating the stock material and the resultant beam within said imaging area and said camera capturing said image data as the stock material and the resultant beam are illuminated.

15. The system of claim 14, wherein said one or more light sources backlight the stock material and the resultant beam within said imaging area to increase visual contrast at one or more edges of the stock material to enable a measurement of the uncut diameter and the width.

16. The system of claim 13, wherein said first cutting blade and said second cutting blade simultaneously cut the stock material to form each pair of cuts, wherein said imaging system captures an image for one or more of each pair of cuts on a periodic basis or a random basis, and said processor stores said image.