The invention relates to a drill consisting of a substantially cylindrical holder (10) with a drill tip (12).

This exposes the cutting bits (12) of the drill bit.

A circulation passage is provided to allow fluid to be passed to the drill tip (16) and in one form a central passage (14) is formed in the shaft (13) to form part of this circulation passage.

A drill bit (12) is produced at the other end by means of cold forging.

According to the idea of the invention, in striking compression stress, which proceeds towards a drill bit (10), is generated in the drilling equipment (5) by striking with a percussion piston.

The chip discharge zone (14) makes it possible that the chips produced by the boring blade (10) at the bore tip (8) can be discharged freely and without buildup.

This disclosure is directed to systems and methods for providing a guiding device having a dilatable, drilling tip.

The drill tip, for example, is rotated, oscillated, vibrated, or the like for performing tissue cutting.

A first end (11) of the bolt has a drill tip (16) to penetrate rock and a second end (12) is adapted to be connected to a drilling apparatus to allow rotation of, and thrust to, the bolt.

The invention relates to a drill consisting of a substantially cylindrical holder (10) with a drill tip (12).

This exposes the cutting bits (12) of the drill bit.

A circulation passage is provided to allow fluid to be passed to the drill tip (16) and in one form a central passage (14) is formed in the shaft (13) to form part of this circulation passage.

A drill bit (12) is produced at the other end by means of cold forging.

According to the idea of the invention, in striking compression stress, which proceeds towards a drill bit (10), is generated in the drilling equipment (5) by striking with a percussion piston.

The chip discharge zone (14) makes it possible that the chips produced by the boring blade (10) at the bore tip (8) can be discharged freely and without buildup.