Percutaneous method of preventing distal embolisation while maintaining adequate distal perfusion in percutaneous interventional procedures

• US 20020169436A1
• Filed: 05/08/2001
• Published: 11/14/2002
• Est. Priority Date: 05/08/2001
• Status: Abandoned Application

• Current Assignee: Hitinder Gurm, Prabhjot Singh Sandhu, Roopinderjit Malhi
• Original Assignee: Hitinder Gurm, Prabhjot Singh Sandhu, Roopinderjit Malhi
• Inventors: Gurm, Hitinder, Sandhu, Prabhjot Singh, Malhi, Roopinderjit
• Application Number:
  US09/851,179
• Publication Number:
  US 20020169436A1
• Time in Patent Office: Days
• US Class Current: 604/509
• CPC Class Codes: A61B 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/12136 Balloons
• CPC Class Codes: A61B 17/22 Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for dilators A61M29/00
• CPC Class Codes: A61B 2017/22001 Angioplasty, e.g. PCTA
• CPC Class Codes: A61B 2017/22067 Blocking; Occlusion A61B2017/22054 takes precedence
• CPC Class Codes: A61B 2090/064 for measuring force, pressure or mechanical tension
• CPC Class Codes: A61M 1/77 Suction-irrigation systems aspiration tips supplying fluids A61M1/85; specific for negative pressure wound therapy A61M1/92; combined with tracheal tubes A61M16/0463
• CPC Class Codes: A61M 2025/1052 for temporarily occluding a vessel for isolating a sector
• CPC Class Codes: A61M 2025/109 having balloons for removing solid matters, e.g. by grasping or scraping plaque, thrombus or other matters that obstruct the flow
• CPC Class Codes: A61M 25/104 used for angioplasty

Abstract

Perfusion guard is a first of a new generation of devices for interventional cardiology. It encompasses an improved debris collection system with a novel perfusion system. It uses an occlusive balloon to provide total protection from debris from interventional procedures. Distal perfusion is maintained using a variety of endogenous or exogenous perfusion substances delivered through an isolated lumen. These substances may be the patients'"'"' blood, artificial blood substitutes or biocompatible perfusion fluids. A therapeutic device or catheter may be introduced through a separate port or may be modified to be delivered over the device. Thus the device provides a safe and improved means of carrying out interventions while protecting from debris generated from these procedures and maintaining perfusion to the segments beyond the site of intervention.

Claims

1. a method for capturing emboli distal to an interventional procedure and maintaining adequate tissue perfusion using an external pump, the method comprising the steps of

providing a catheter having a proximal end, a distal end and a series of lumens in between, the distal end having an occluding member and a series of lumens opening via single or multiple ports proximal to the occluding member:

Inserting the device beyond an occlusion in the vessel in an ante grade direction

Connecting the central lumen to an external pump via the distal end and providing supply of a perfusing liquid to the artery

Expanding the occluding member to occlude the blood flow proximal to the occluding member

Using a therapeutic instrument on the vessel by inserting it through one of the proximal lumens or independent of the catheter

Aspirating the debris from the procedure using via a lumen proximal to the occluding member

2. The method of claim 1

Where the occluding member is a balloon

3. The method of claim 1

Where there is another balloon proximal to the aspiration port

4. The method of claim 1

Where an umbrella device can be deployed over the catheter to provide another method of debris capture in addition to or in lieu of the occluding member.

5. The method of claim 1

Where the perfusion fluid is patient'"'"'s own blood obtained via cannulation of an artery away from the site of intervention.

6. The method of claim 1

Where the perfusion fluid is a substitute for blood.

7. The method of claim 1

Where the therapeutic instrument is an angioplasty device

8. The method of claim 1

Where the therapeutic device is an atherectomy device

9. The method of claim 1

Where the therapeutic device is an ultrasonic device

10. The method of claim 1

Where the therapeutic device is a stent delivery device

11. The method of claim 1

Where the therapeutic device can be deployed over the device

12. The method of claim 1

Where angiographic dye can be injected to visualize the vessel proximal or distal to the catheter

13. The method of claim 1

Where medications may be administered via the perfusion fluid

14. The method of claim 1

Where medications may be administered proximal to the occluding member.

15. The method of claim 1

Where the device is used to provide protected perfusion while the intervention is carried out further upstream.