Method and apparatus for tissue resection

Abstract

A resection device includes an elongated probe shaft and a tissue resection member disposed at a distal end of the elongated probe shaft. The tissue resection member has a cutting surface configured for being placed in contact with tissue. In one aspect of the invention, at least one ejection port is located adjacent to the cutting surface of the tissue resection member, wherein the at least one ejection port is coupled to a source of a polymerizable hemostasis-promoting material that is delivered to the resection site of interest. In certain embodiments, polymerization of the hemostasis-promoting material may be accelerated by application of heat, radiofrequency energy, or ultra violet light.

1 . A resection device comprising:
 an elongated probe shaft;   a tissue resection member disposed at a distal end of the elongated probe shaft, the tissue resection member having a cutting surface configured for being placed in contact with tissue; and   at least one ejection port located adjacent to the cutting surface of the tissue resection member, the at least one ejection port configured for being coupled to a source of a polymerizable hemostasis-promoting material.   
   
   
       2 . The resection device of  claim 1 , wherein the hemostasis-promoting material comprises a thermally-activated polymer. 
   
   
       3 . The resection device of  claim 1 , wherein the hemostasis-promoting material comprises a light-activated polymer. 
   
   
       4 . The resection device of  claim 3 , wherein the hemostasis-promoting material is activated upon exposure to ultraviolet light. 
   
   
       5 . The resection device of  claim 1 , wherein the hemostasis-promoting material comprises energy-activated polymer. 
   
   
       6 . The resection device of  claim 5 , wherein hemostasis-promoting material is activated upon exposure to radiofrequency (RF) energy. 
   
   
       7 . The resection device of  claim 1 , wherein the tissue resection member comprises a resection electrode. 
   
   
       8 . The resection device of  claim 1 , wherein the tissue resection member comprises a mechanical resection member. 
   
   
       9 . The resection device of  claim 8 , wherein the mechanical resection member comprises a blade. 
   
   
       10 . The resection device of  claim 8 , wherein the tissue resection member comprises a vibrational cutting member. 
   
   
       11 . The resection device of  claim 1 , wherein the tissue resection member comprises a laser. 
   
   
       12 . The resection device of  claim 11 , wherein the source of polymerizable hemostasis-promoting material is pressurized. 
   
   
       13 . A resection device comprising:
 an elongated probe shaft;   a tissue resection member disposed at a distal end of the elongated probe shaft, the tissue resection member having a cutting surface configured for being placed in contact with tissue; and   a porous delivery member disposed at the distal end of the elongated probe shaft, the porous delivery member configured for being coupled to a source of a polymerizable hemostasis-promoting material.   
   
   
       14 . The resection device of  claim 13 , wherein the hemostasis-promoting material comprises a thermally-activated polymer. 
   
   
       15 . The resection device of  claim 13 , wherein the hemostasis-promoting material comprises a light-activated polymer. 
   
   
       16 . The resection device of  claim 15 , wherein the hemostasis-promoting material is activated upon exposure to ultraviolet light. 
   
   
       17 . The resection device of  claim 13 , wherein the hemostasis-promoting material comprises energy-activated polymer. 
   
   
       18 . The resection device of  claim 17 , wherein hemostasis-promoting material is activated upon exposure to radiofrequency (RF) energy. 
   
   
       19 . The resection device of  claim 13 , wherein the tissue resection member comprises a resection electrode. 
   
   
       20 . The resection device of  claim 13 , wherein the tissue resection member comprises a mechanical resection member. 
   
   
       21 . The resection device of  claim 20 , wherein the mechanical resection member comprises a blade. 
   
   
       22 . The resection device of  claim 13 , wherein the tissue resection member comprises a vibrational cutting member. 
   
   
       23 . The resection device of  claim 13 , wherein the tissue resection member comprises a laser. 
   
   
       24 . The resection device of  claim 13 , wherein the porous delivery member comprises a sponge. 
   
   
       25 . The resection device of  claim 19 , further comprising an insulating member interposed between the resection electrode and the porous delivery member. 
   
   
       26 . The resection device of  claim 19 , wherein the resection electrode and porous delivery member are in electrical contact in a bipolar arrangement. 
   
   
       27 . The resection device of  claim 19 , wherein the resection device is configured in a monopolar arrangement. 
   
   
       28 . The resection device of  claim 13 , wherein the source of polymerizable hemostasis-promoting material is pressurized. 
   
   
       29 . A resection device comprising:
 an elongated probe shaft;   a tissue resection member disposed at a distal end of the elongated probe shaft, the tissue resection member having a cutting surface configured for being placed in contact with tissue;   a porous delivery member disposed at the distal end of the elongated probe shaft, the porous delivery member configured for being coupled to a source of a polymerizable hemostasis-promoting material; and   an ultra violet light emitter located adjacent to the porous delivery member.   
   
   
       30 . The resection device of  claim 29 , further comprising an ultra violet light shield interposed between the porous delivery member and the ultra violet light emitter. 
   
   
       31 . The resection device of  claim 29 , wherein the source of polymerizable hemostasis-promoting material is pressurized. 
   
   
       32 . The resection device of  claim 29 , wherein the hemostasis-promoting material is activated upon exposure to ultraviolet light. 
   
   
       33 . The resection device of  claim 29 , wherein the tissue resection member comprises a resection electrode. 
   
   
       34 . The resection device of  claim 29 , wherein the tissue resection member comprises a mechanical resection member. 
   
   
       35 . The resection device of  claim 29 , wherein the mechanical resection member comprises a blade. 
   
   
       36 . The resection device of  claim 29 , wherein the tissue resection member comprises a vibrational cutting member. 
   
   
       37 . The resection device of  claim 29 , wherein the tissue resection member comprises a laser. 
   
   
       38 . A method of resecting tissue using the resection device of  claim 1 . 
   
   
       39 . A method of resecting tissue comprising:
 providing a resection device;   cutting the tissue with a distal end of the resection device; and   ejecting the polymerizable hemostasis-promoting material from at least one ejection port in the resection device to contact at least a portion of the cut tissue.   
   
   
       40 . The method of  claim 39 , further comprising the step of curing the polymerizable hemostasis-promoting material contacting the portion of cut tissue. 
   
   
       41 . The method of  claim 40 , wherein the curing process is accelerated by application of heat to the cut tissue using the resection device. 
   
   
       42 . The method of  claim 40 , wherein the curing process is accelerated by application of ultra violet radiation to the cut tissue using the resection device. 
   
   
       43 . The method of  claim 42 , wherein the resection device includes a porous delivery member disposed at the distal end thereof, the porous delivery member configured for being coupled to a source of a polymerizable hemostasis-promoting material, the resection device including an ultra violet light emitter located adjacent to the porous delivery member, and an ultra violet light shield interposed between the porous delivery member and the ultra violet light emitter. 
   
   
       44 . The method of  claim 40 , wherein the curing process is accelerated by application of radiofrequency energy to the cut tissue using the resection device. 
   
   
       45 . The method of  claim 39 , wherein the polymerizable hemostasis-promoting material is ejected from the at least one ejection port at substantially the same time the tissue is cut. 
   
   
       46 . The method of  claim 39 , wherein the polymerizable hemostasis-promoting material is ejected from the at least one ejection port after the tissue is cut. 
   
   
       47 . The method of  claim 39 , wherein the polymerizable hemostasis-promoting material is ejected from the at least one ejection port under pressure.