US2005273129A1PendingUtilityA1

Anatomical space access tools and methods

48
Assignee: MEDTRONIC INCPriority: Oct 31, 2002Filed: Apr 21, 2005Published: Dec 8, 2005
Est. expiryOct 31, 2022(expired)· nominal 20-yr term from priority
Inventors:Koen MichelsNicolaas LokhoffMatthew D. Bonner
A61B 17/3423A61B 17/3415A61B 2017/00247A61B 2017/00561A61B 2017/306A61B 2017/3486A61B 2017/3488A61B 2018/00392
48
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Cited by
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References
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Claims

Abstract

Medical devices and methods for accessing an anatomical space of the body and particularly for penetrating the epicardium to access pericardial space and the epicardial surface of the heart in a minimally invasive manner employing suction are disclosed. The distal end of a tubular access sleeve having a sleeve wall surrounding a sleeve access lumen and extending between a sleeve proximal end and a sleeve distal end having a plurality of suction ports arrayed around the sleeve access lumen distal end opening is applied against an outer tissue layer. Suction is applied through the plurality of suction ports to a plurality of portions of the outer tissue layer. A perforation instrument is introduced through the sleeve access lumen to perforate the outer tissue layer to form an access perforation into the anatomic space while the applied suction stabilizes the outer tissue layer, whereby further treatment drugs and devices can be introduced into the anatomic space.

Claims

exact text as granted — not AI-modified
1 - 33 . (canceled)  
   
   
       34 . A method of performing a medical procedure comprising: 
 applying suction through a plurality of suction ports to grasp the surface of a tissue layer surrounding an anatomic space, the plurality of suction ports being positioned at the distal end of a tubular device and arrayed around a distal end opening of an access lumen of the tubular device;    introducing a penetration device through the access lumen to the outer surface of the tissue layer;    penetrating the tissue layer to form a passage through the tissue layer and into the anatomic space;    withdrawing the penetration device from the access lumen; and    introducing a distal portion of a medical device through the access lumen and the passage through the tissue layer and into the anatomic space.    
   
   
       35 . The method of  claim 34  wherein the medical device is a pacemaker lead.  
   
   
       36 . The method of  claim 34  wherein the medical device is a defibrillator lead.  
   
   
       37 . The method of  claim 34  wherein the medical device comprises an electrode.  
   
   
       38 . The method of  claim 34  wherein the medical device comprises a needle.  
   
   
       39 . The method of  claim 34  wherein the medical device is a drug delivery device.  
   
   
       40 . The method of  claim 34  wherein the medical device is a fluid delivery device.  
   
   
       41 . The method of  claim 34  wherein the medical device is a fluid removal device.  
   
   
       42 . The method of  claim 34  wherein the medical device is a cardiac assist device.  
   
   
       43 . The method of  claim 34  wherein the medical device is a catheter.  
   
   
       44 . The method of  claim 34  wherein the medical device is a guidewire.  
   
   
       45 . The method of  claim 34  wherein the medical device is a transmyocardial revascularization device.  
   
   
       46 . The method of  claim 34  wherein the medical device is a left atrial appendage closure device.  
   
   
       47 . The method of  claim 34  wherein the medical device is an ablation device.  
   
   
       48 . The method of  claim 34  wherein the medical device is a scope.  
   
   
       49 . The method of  claim 34  wherein the medical device is a dilator.  
   
   
       50 . The method of  claim 34  wherein the medical device is a retraction device.  
   
   
       51 . The method of  claim 34  wherein the perforation device comprises a knife.  
   
   
       52 . The method of  claim 34  wherein the penetration device comprises a needle.  
   
   
       53 . The method of  claim 34  wherein the penetration device comprises a stiff guidewire tip.  
   
   
       54 . The method of  claim 34  wherein the penetration device is an electrosurgical cutting device.  
   
   
       55 . The method of  claim 34  wherein penetration device is a cutting device.  
   
   
       56 . The method of  claim 34  wherein penetration device is a piercing device.  
   
   
       57 . The method of  claim 34  wherein penetration device is a trocar device.

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