Finger-controllable electrosurgical handpiece
View Patent ↗An electrosurgical handpiece comprises a handle, a nose piece for threaded engagement with the handle at a first end for cooperating with a collet to grip an electrode, and a detachable cable connector at the opposite second end, the latter being characterized by a rotatable connection such that when the handle is rotated by the user, the cable will maintain its rotary position and thus not encumber rotation of the handle to a desired position. The electrosurgical handpiece may also comprise a nose piece with at least one set of circumferentially-spaced grooves, preferably two axially-spaced sets, which the surgeon can use with his fingers for one-handed orientation of the electrode position.
1. An electrosurgical handpiece for use by a surgeon comprising:
an elongated handle member having a longitudinal axis and having at a first end a first portion for receiving and holding a nose piece and a second end,
first means for removably receiving and holding an electrode, said first means being positioned on the handle member at its first end under the nose piece such that when an electrode is mounted on and gripped by the first means the gripped part projects generally parallel to the longitudinal axis in a direction frontward of the handle member,
an electrode connector at the second end and connected to the first means,
the nose piece having a second portion for engagement with the first portion and configured such that, when rotated while in engagement with the first portion of the handle member, the nose piece functions to cause the first means to tighten and to loosen its grip on the electrode,
the nose piece having on its outer surface at a position close to the first end at least a first set of longitudinally-extending circumferentially-spaced notches, the notches being circumferentially spaced by non-notched areas such that when the handle member is held by the surgeon with a finger or fingers of the surgeon engaging one or more of the notches and the non-notched areas, the surgeon acquires improved tactile control over the electrode,
the nose piece comprising on its outer surface a second set of circumferentially-spaced notches axially spaced by non-notched areas from the first set and further removed from the first end.
2. An electrosurgical handpiece as claimed in claim 1 , wherein the first set of nose piece notches comprises notches of a given axial length and the second set of nose piece notches comprises notches whose axial length is different from that of the first set.
3. An electrosurgical handpiece as claimed in claim 2 , wherein the first and second set of nose piece notches each total about 8 notches.
4. An electrosurgical handpiece as claimed in claim 2 , wherein each of the notches of the first and second sets extend generally longitudinally and are generally oval shaped.
5. In combination, the electrosurgical handpiece as claimed in claim 1 and an electrosurgical instrument producing RF electrosurgical currents of about 4 MHz, the former being plugged into the latter.
6. An electrosurgical handpiece for use by a surgeon comprising:
an elongated handle member having a longitudinal axis and having at a first end a first portion for receiving and holding a nose piece and a second end,
first means for removably receiving and holding an electrode, said first means being positioned on the handle member at its first end under the nose piece such that when an electrode is mounted on and gripped by the first means the gripped part projects generally parallel to the longitudinal axis in a direction frontward of the handle member,
an electrode connector at the second end and connected to the first means,
the nose piece having a second portion for engagement with the first portion and configured such that, when rotated while in engagement with the first portion of the handle member, the nose piece functions to cause the first means to tighten and to loosen its grip on the electrode,
the nose piece comprising axially-spaced larger-diameter sections separated by a smaller-diameter section,
the nose piece having on its outer surface at a position close to the first end at least a first set of longitudinally-extending circumferentially-spaced notches, the notches being circumferentially spaced by non-notched areas such that when the handle member is held by the surgeon with a finger or fingers of the surgeon engaging one or more of the notches and the non-notched areas, the surgeon acquires improved tactile control over the electrode,
the nose piece further comprising on its outer surface a second set of circumferentially-spaced notches axially spaced from the first set and further removed from the first end,
the first notch set being on one of the larger sections, the second notch set being on the other of the larger sections.
7. An electrosurgical handpiece for use by a surgeon comprising:
an elongated handle member having a longitudinal axis and having at a first end a first portion for receiving and holding a short nose piece and a second end,
first means for removably receiving and holding an electrode, said first means being positioned on the handle member at its first end under the nose piece such that when an electrode is mounted on and gripped by the first means the gripped part projects generally parallel to the longitudinal axis in a direction frontward of the handle member,
an electrode connector at the second end and connected to the first means,
the nose piece having a second portion for engagement with the first portion and configured such that, when rotated while in engagement with the first portion of the handle member, the nose piece functions to cause the first means to tighten and to loosen its grip on the electrode,
the nose piece having on its outer surface a first set of circumferentially-spaced notches,
the part of the handle member adjacent the nose piece comprises on its outer surface a second set of circumferentially-spaced notches axially spaced by non-notched areas from the first set,
each of the notches of the first and second set of notches being circumferentially-spaced by non-notched areas such that when the handle member is held by the surgeon with a finger or fingers of the surgeon engaging one or more of the notches and the non-notched areas, the surgeon acquires improved tactile control over the electrode.
8. An electrosurgical handpiece as claimed in claim 7 , wherein the first and second notch sets are composed of oval-shaped notches having different lengths and are positioned on parts of the handpiece having different diameters.
9. An electrosurgical handpiece as claimed in claim 7 , wherein the first means comprises a collet in the form of radially positioned balls supported by a ball cage with the balls in contact with the first means.
10. An electrosurgical handpiece as claimed in claim 7 , further comprising a button fingerswitch on the handle adjacent the part of the handle member containing the second notch set, and a circuit board inside the handle positioned to be contacted by the button when the latter is pressed.
11. An electrosurgical handpiece as claimed in claim 10 , wherein the circuit board comprises a bifurcated spring clip contacting the first means.