Body tissue retrieval bag arrangement

Abstract

A tissue retrieval arrangement for enclosably retrieving body tissue from a mammalian body cavity. The retrieval arrangement comprises an elongated thin walled sheath-like retrieval bag having a proximal end and a distal end. A plurality of receiving tips are arranged on the distal end of the sheath to permit receipt of a grasper jaw in each of the receiving tips and thus permit safe retrieval of a body tissue between the receiving tips when moved by the grasper jaws. The bag is everted over the severed tissue once the receiving tips have grasped the tissue, and the now enclosed tissue and bag may be safely removed from the patient.

1 . A tissue retrieval arrangement for enclosably retrieving body tissue from a mammalian body cavity comprising: 
 an elongated thin walled sheath-like retrieval bag having a proximal end and a distal end;    an arrangement of receiving tips on said distal end of said sheath to permit receipt of a grasper jaw in each of said receiving tips and thus permit safe retrieval of a body tissue between said receiving tips moved by said grasper jaws therewithin.    
   
   
       2 . The tissue retrieval arrangement for enclosably retrieving body tissue as recited in  claim 1 , wherein said retrieval bag is evertable.  
   
   
       3 . The tissue retrieval arrangement for enclosably retrieving body tissue as recited in  claim 1 , wherein said proximal end of said retrieval bag has tightenable closure arrangement thereon.  
   
   
       4 . The tissue retrieval arrangement for enclosably retrieving body tissue as recited in  claim 1 , wherein said proximal end of said retrieval bag has a bead extending therearound.  
   
   
       5 . The tissue retrieval arrangement for enclosably retrieving body tissue as recited in  claim 1 , wherein said retrieval bag has an arrangement of generally axially directed pleats arranged thereon, to permit expansion of said bag during a retrieval operation.  
   
   
       6 . The tissue retrieval arrangement for enclosably retrieving body tissue as recited in  claim 3 , wherein said tightenable closure arrangement comprises a loop and draw cord arranged therearound.  
   
   
       7 . The tissue retrieval arrangement for enclosably retrieving body tissue as recited in  claim 1 , wherein said distal end of said retrieval bag is closed.  
   
   
       8 . The tissue retrieval arrangement for enclosably retrieving body tissue as recited in  claim 1 , wherein said distal end of said retrieval bag has an opening therethrough.  
   
   
       9 . The tissue retrieval arrangement for enclosably retrieving body tissue as recited in  claim 8 , wherein said bag has a thickened distal lip to facilitate secure fluid tight receipt of said grasper jaws extending therethrough.  
   
   
       10 . The tissue retrieval arrangement for enclosably retrieving body tissue as recited in  claim 1 , wherein each of said receiving tips defines a slot with an adjacent receiving tip, to provide an channel for entry of a body tissue therein.  
   
   
       11 . The tissue retrieval arrangement as recited in  claim 1 , wherein said distal end of said retrieval bag is narrower than said proximal end thereof, to facilitate everting thereof.  
   
   
       12 . A method of retrieving body tissue from a body cavity of a mammalian patient comprising: 
 placing an elongated grasper device with a jaw arranged on a distal end thereof into an elongated tissue retrieval bag having a proximal end and a distal end, said retrieval bag having receiving tips on said distal end thereof to receive said jaws respectively therein;    severing a tissue from a body portion of the patient;    grasping said tissue by manipulating said jaws and said receiving tips onto said tissue;    everting said retrieval bag about said tissue; and    withdrawing said retrieval bag with said tissue now inside, from said body cavity of the patient.    
   
   
       13 . The method of retrieving body tissue as recited in  claim 12 , including: 
 pulling said proximal end of said retrieval bag in a distal direction over itself to effect the everting thereof with the body tissue now on the inside thereof.    
   
   
       14 . The method of retrieving body tissue as recited in  claim 12 , including: 
 tightening a closure arrangement on said distal end of said retrieval bag to prevent loss of any tissue therefrom.    
   
   
       15 . The method of retrieving body tissue as recited in  claim 12 , including: 
 arranging an opening on said distal end of said retrieval bag to permit each of said jaws to extend through said opening so that said jaws may directly grasp said tissue.    
   
   
       16 . The method of retrieving body tissue as recited in  claim 12 , including: 
 inserting said jaws in said receiving tips to permit said bag to grasp a tissue thereby.    
   
   
       17 . The method of retrieving body tissue as recited in  claim 12 , including: 
 placing at least three receiving tips in said distal end of said receiving bag for receipt of a jaw therein.    
   
   
       18 . A method of retrieving body tissue from a body cavity of a mammalian patient comprising: 
 placing an elongated grasper device with a jaw arranged on a distal end thereof into an elongated tissue retrieval bag having a proximal end and a distal end, said retrieval bag having receiving tips on said distal end thereof to receive said jaws respectively therein as said grasper is inserted into said bag;    severing a tissue from a body portion of the patient;    grasping said tissue by manipulating said jaws and said receiving tips onto said tissue;    pulling on said proximal end of said retrieval bag to evert said bag about said tissue being grasped; and    withdrawing said retrieval bag with said tissue now in said everted bag, from said body cavity of the patient.