Electrosurgical pencil with sheath

1. Electrosurgical pencil ( 100 ) adapted to receive an electrode ( 1 ) controllable by an electrical signal for performing surgical operations, comprising:

a housing ( 4 , 5 , 6 , 7 ), a circuit ( 2 ), and switching means ( 3 , 71 ) adapted to be activated from outside the housing ( 4 , 5 , 6 , 7 ) for closing the circuit ( 2 ),

wherein the housing ( 4 , 5 , 6 , 7 ) comprises receiving means ( 41 ) for receiving the electrode ( 1 ),

the housing ( 4 , 5 , 6 , 7 ) comprising a sheath ( 7 ) in a soft or resilient material, which sheath ( 7 ) encloses at least the main part ( 4 ) of the housing ( 4 , 5 , 6 , 7 ),

wherein the sheath has actuators in form of buttons ( 71 ) that are integral with and protrude from said sheath ( 7 ), and the thickness of the sheath ( 7 ) is greater than 0.35 mm in the area of the switching means ( 3 , 71 ).

2. Electrosurgical pencil ( 100 ) according to claim 1 , wherein the sheath ( 7 ) is made of silicone or rubber.

3. Electrosurgical pencil ( 100 ) according to claim 1 , wherein the housing ( 4 , 5 , 6 , 7 ) comprises a first housing part ( 5 ) which via the main housing part ( 4 ) extends into a second housing part ( 6 ), and the sheath ( 7 ), wherein at least a part of opposite lengths of the first housing part ( 5 ) and the second housing part ( 6 ), respectively, adjacent the main housing part ( 4 ) are enclosed by the sheath ( 7 ).

4. Electrosurgical pencil ( 100 ) according to claim 3 , wherein the first housing part ( 5 ) and the second housing part ( 6 ) are provided with respective notches ( 55 , 65 ), which, in an assembled state of the electrosurgical pencil ( 100 ), define a shore area therebetween, where the sheath ( 7 ) is positioned.

5. Electrosurgical pencil ( 100 ) according to claim 3 , wherein the sheath ( 7 ) has a smaller thickness at the end facing the second housing part ( 6 ) than at the main housing part ( 4 ) and a larger thickness at the end facing the first housing part ( 5 ) than at the main housing part ( 4 ).

6. Electrosurgical pencil ( 100 ) according to claim 1 , wherein the sheath ( 7 ) tapers at the end enclosing a length of the first housing part ( 5 ) adjacent the main housing part ( 4 ).

7. Electrosurgical pencil ( 100 ) according to claim 1 , wherein that the sheath ( 7 ) has a substantially triangular cross-section.

8. Electrosurgical pencil ( 100 ) according to claim 1 , wherein the sheath ( 7 ) is adapted to isolate the circuit ( 2 ) from a user.

9. Electrosurgical pencil ( 100 ) according to claim 1 , wherein a user can control activation of cutting and coagulating power from a generator and/or control suction by means of the actuators ( 71 ).

10. Electrosurgical pencil ( 100 ) according to claim 1 , wherein the switching means comprises one or more switches ( 3 ) and the actuators ( 71 ) of the sheath ( 7 ) are positioned above the switch(es) ( 3 ).

11. Electrosurgical pencil ( 100 ) according to claim 1 , wherein the circuit is a flexible circuit ( 2 ) having no conducting parts on the face facing the sheath ( 7 ) so as to serve as a layer of insulation.

12. Electrosurgical pencil ( 100 ) according to claim 1 , wherein the sheath ( 7 ) including the activators ( 71 ) is a layer of insulation.

13. Electrosurgical pencil ( 100 ) according to claim 1 , further comprising one or more indentations ( 42 ) provided along the length of the main housing part ( 4 ) each indentation accommodating a switch ( 3 ) in order to keep the pencil slim.

14. Electrosurgical pencil ( 100 ) adapted to receive an electrode ( 1 ) controllable by an electrical signal for performing surgical operations, comprising:

a housing ( 4 , 5 , 6 , 7 ), a circuit ( 2 ), and switching means ( 3 , 71 ) adapted to be activated from outside the housing ( 4 , 5 , 6 , 7 ) for closing the circuit ( 2 ),

wherein the housing ( 4 , 5 , 6 , 7 ) comprises receiving means ( 41 ) for receiving the electrode ( 1 ),

the housing ( 4 , 5 , 6 , 7 ) comprising a sheath ( 7 ) of silicone or rubber, which sheath ( 7 ) encloses at least the main part ( 4 ) of the housing ( 4 , 5 , 6 , 7 ),

wherein the sheath has actuators in form of buttons ( 71 ) that are integral with and protrude from said sheath ( 7 ), the thickness of the sheath ( 7 ) is greater than 0.35 mm in the area of the switching means ( 3 , 71 ), and the switching means comprises one or more switches ( 3 ) and the actuators ( 71 ) of the sheath ( 7 ) are positioned above the switch(es) ( 3 ) with at least a portion of the flexible circuit positioned therebetween.

15. Electrosurgical pencil ( 100 ) according to claim 14 , further comprising one or more indentations ( 42 ) provided along the length of the main housing part ( 4 ) each indentation accommodating a switch ( 3 ) in order to keep the pencil slim.

16. Electrosurgical pencil ( 100 ) according to claim 14 , wherein the circuit is a flexible circuit ( 2 ) having no conducting parts on the face facing the sheath ( 7 ) so as to serve as a layer of insulation.

17. Electrosurgical pencil ( 100 ) according to claim 14 , wherein the sheath ( 7 ) including the activators ( 71 ) is a layer of insulation.

18. Electrosurgical pencil ( 100 ) according to claim 14 , wherein the sheath ( 7 ) has a smaller thickness at the end facing the second housing part ( 6 ) than at the main housing part ( 4 ) and a larger thickness at the end facing the first housing part ( 5 ) than at the main housing part ( 4 ).

19. Electrosurgical pencil ( 100 ) according to claim 14 , wherein the receiving means comprises a bushing that is straight, conical, pyramid shaped, polygon shaped or that has combinations thereof and that optionally is tapered.

20. Electrosurgical pencil ( 100 ) according to claim 19 , wherein the bushing is circular at one end and polygon shaped at the opposite end and the flexible circuit adapts to the shape of the bushing.