Blade for a cutting instrument, scalpel holder for a blade, and method for producing a blade

Patent metadata

Field	Value
Publication number	US-11278308-B2
Application number	US-201614993282-A
Country	US
Kind code	B2
Filing date	Jan 12, 2016
Priority date	Jan 13, 2015
Publication date	Mar 22, 2022
Grant date	Mar 22, 2022

Abstract

A blade for a cutting instrument, in particular for medical use, includes a first ceramic layer, a second ceramic layer, and a heating device arranged between the first ceramic layer and the second ceramic layer.

First claim

What is claimed is:

1. A blade for a cutting instrument, comprising:
a first ceramic layer;
a second ceramic layer connected to the first ceramic layer so as to form a ceramic body; and
a heating device including a heating meander embedded in the ceramic body between the first ceramic layer and the second ceramic layer, the heating meander configured to generate heat at the first and second ceramic layers,
wherein the ceramic body defines a cutting edge of the blade, the cutting edge including at least one sharp edge.

2. The blade according to claim 1 , wherein the ceramic body is a monolithic ceramic body.

3. The blade according to claim 1 , wherein the heating device includes at least one contact connection that is exposed to an exterior of the blade.

4. The blade according to claim 1 , wherein at least one of the first ceramic layer and the second ceramic layer at least one of:
(i) includes zirconium oxide; and
(ii) is formed from a green ceramic film.

5. The blade according to claim 1 , wherein the heating device includes a temperature-measuring device.

6. The blade according to claim 1 , wherein the heating device is positioned so as to lie along a plane that runs through the cutting edge of the blade.

7. The blade according to claim 6 , wherein the blade is symmetrical about the plane.

8. The blade according to claim 1 , wherein the blade is configured to be mounted on a scalpel holder.

9. The blade according to claim 1 , wherein at least one of the first ceramic layer and the second ceramic layer includes zirconium oxide.

10. The blade according to claim 1 , wherein the heating meander includes a heating wire that has at least one of a material thickness and a material composition that enables the blade to be repeatedly heated to a temperature above 500 ° C.

11. The blade according to claim 1 , wherein the heating device further includes at least one supply line connected to the heating meander, the heating meander having a high electrical resistance as compared to the at least one supply line.

12. The blade according to claim 1 , further comprising:
at least one fluid channel defined in the ceramic body and extending along a main direction of extent of the first ceramic layer.

13. The blade according to claim 12 , wherein:
the second ceramic layer defines at least one opening fluidly connected to the at least one fluid channel so as to define at least one of an inlet and an outlet for a fluid; and
the at least one opening is located in a region of at least one of the cutting edge, a blade side, a blade spine, and a stem of the blade.

14. A blade for a cutting instrument, comprising:
a first ceramic layer;
a second ceramic layer connected to the first ceramic layer so as to form a monolithic ceramic body; and
a heating device including a heating meander embedded in the monolithic ceramic body between the first ceramic layer and the second ceramic layer, the heating meander configured to generate heat,
wherein the monolithic ceramic body defines a cutting edge of the blade, the cutting edge including at least one sharp edge; and
at least one fluid channel defined in the ceramic body and extending along a main direction of extent of the monolithic ceramic body.

15. The blade according to claim 14 , wherein:
the second ceramic layer defines at least one opening fluidly connected to the at least one fluid channel so as to define at least one of an inlet and an outlet for a fluid; and
the at least one opening is located in a region of at least one of the cutting edge, a blade side, a blade spine, and a stem of the blade.

16. The blade according to claim 15 , wherein at least one of (i) the at least one fluid channel and (ii) the at least one opening has a cross section defined, at least in certain regions, by at least one of a circular shape, an ellipsoidal shape, and a slot shape.

17. The blade according to claim 14 , the at least one fluid channel having a cross section with a diameter in a range from 0.25 mm to 3 mm.

Assignees

• Bosch Gmbh Robert

Inventors

• Sedlmayr Andreas
• Glanz Uwe
• Schellenberg Inga
• Loibl Thomas
• Heeren Imke

Classifications

• A61B17/3211 Primary

  Surgical scalpels, knives; Accessories therefor · CPC title

• B23P15/28

  cutting tools (sawing tools B23D63/00, B23D65/00; files or rasps B23D73/00) · CPC title

• A61B2017/0088

  ceramic · CPC title

• A61B2018/00607

  Coagulation and cutting with the same instrument · CPC title

• A61B2218/002

  Irrigation · CPC title