Surgical instrument for ablation and aspiration
0 Assignments
0 Petitions
Accused Products
Abstract
An electrosurgical aspiration instrument that permits aspiration of an area being treated by the instrument. The instrument is coupled at a proximal end to a power source and includes an energy application surface area at a distal end. The power source supplied energy to the energy application surface area such that the distal end of the instrument may apply energy to the treatment area to modify the characteristics of biological material, such as biological tissue in the area. An aspiration lumen is formed through the instrument with an opening through the energy application surface area. The energy application surface area is configured to reduce blockage of the opening. Accordingly, aspiration may be performed simultaneously with electrosurgical treatment whereby unwanted matter such as by-products, biological debris and excess fluid is removed from the treatment area. The electrosurgical aspiration instrument also permits both functions to be performed at different times, with the advantage of not requiring instruments to be switched on during the treatment procedure or removed from the treatment site.
384 Citations
94 Claims
-
1-40. -40. (Cancelled)
-
41. A surgical instrument comprising:
-
a shaft having distal and proximal ends, the shaft defining a lumen;
a conductive member disposed at the distal end of the shaft across the lumen and forming an electrode, the conductive member having an opening therethrough communicating with the lumen for aspirating material through the conductive member, the opening being smaller than a diameter of the lumen to avoid clogging of aspirated material downstream of the opening, the conductive member having an ashtray shape; and
a conductor connected to the conductive member. - View Dependent Claims (42, 43, 44, 45, 46)
-
-
47. A surgical instrument for use with a power source, the surgical instrument comprising:
-
a shaft having distal and proximal ends, the shaft defining a lumen;
a conductive member disposed at the distal end of the shaft across the lumen to define an energy application plane across the lumen and forming an electrode, the conductive member having an opening therethrough communicating with the lumen for aspirating material through the conductive member across the energy application plane, the opening being smaller than a diameter of the lumen to avoid clogging of aspirated material downstream of the opening, the electrode having an ashtray shape and having a mechanical treatment surface for the mechanical removal of tissue at a surgical site; and
a conductor connected to the conductive member and adapted for coupling to the power source. - View Dependent Claims (48, 49, 50, 51, 52, 53, 54, 55, 56, 57)
-
-
58. A surgical device comprising:
-
an elongated shaft defining a lumen;
a first electrode coupled to the elongated shaft and forming a tissue treatment surface configured to treat tissue, the tissue treatment surface defining at least part of a lumen opening in communication with the lumen; and
a second electrode coupled to the elongated shaft and electrically isolated from the first electrode. - View Dependent Claims (59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 94)
-
-
82. A method of performing surgery, the method comprising:
-
applying electrical energy to a first electrode of a bipolar surgical device to perform electrosurgery on a target tissue, the first electrode being disposed on an elongated shaft of the bipolar device, the bipolar device further including a second electrode; and
transferring fluid through a lumen and a lumen opening of the surgical device, the lumen opening being in communication with the lumen and being defined at least in part by a tissue treatment surface formed by the first electrode. - View Dependent Claims (83, 84, 85, 86, 87, 88, 89, 90)
-
-
91. A surgical device comprising:
-
an elongated shaft defining a lumen, and the surgical device defining a lumen opening in communication with the lumen, the lumen opening being smaller than a diameter of the lumen to avoid clogging of aspirated material downstream of the lumen opening;
a first electrode coupled to the elongated shaft; and
a second electrode coupled to the elongated shaft and electrically isolated from the first electrode. - View Dependent Claims (92, 93)
-
Specification