Dental hand tool with ratchet mechanism

A dental driving tool, comprising:

• a handle adapted to be manually rotated;
• a drive shaft having a locking mechanism, a distal end adapted to drive a dental implant into a jawbone, and a proximal end connected to the handle;
• a ratchet assembly at the proximal end of the drive shaft, wherein said ratchet assembly is operated independently from said locking mechanism;
• and
• a pin assembly at the handle and releasably engageable with the locking mechanism to provide two different modes of drive rotation, a ratchet mode and a manual mode, to drive the dental implant into the jawbone.

A dental driving tool, comprising:

• a handle adapted to be manually rotated;
• a drive shaft having a distal end adapted to drive a dental implant into a jawbone and having a proximal end connected to the handle;
• a ratchet assembly at the drive shaft and including a race and a roller member;
• a pin assembly at the handle and releasably engageable with the drive shaft to provide two different modes of drive rotation, a ratchet mode and a manual mode;
• the ratchet mode is adapted to use the ratchet assembly to drive the dental implant into the jawbone;
• and
• the manual mode is adapted to use engagement between the pin assembly and drive shaft to drive the dental implant into the jawbone.

A dental driving tool, comprising:

• a handle having a hand-grip portion on a exterior surface;
• a drive shaft having a distal end with a tool engaging assembly adapted to engage a dental driver and having a proximal end connected to the handle;
• a ratchet assembly located in the handle;
• a pin assembly located in the handle;
• the dental driving tool being operable in two different modes, a ratchet mode and a manual mode, to drive a dental implant into a jawbone of a patient;
• wherein the ratchet mode uses the ratchet assembly to drive the dental implant, and the manual mode uses the pin assembly to drive the dental implant;
• wherein the drive shaft includes a locking mechanism;
• the pin assembly includes a biasing member and a pin;
• and the pin being moveable to engage the locking mechanism;
• wherein the pin engages the locking mechanism to operate the dental driving tool in the manual mode;
• wherein the locking mechanism includes a plurality of recesses;
• and the pin is moveable to engage one of the recesses;
• wherein the pin assembly further includes a housing;
• the biasing member and pin located in the housing;
• and the pin being moveable in the housing to two different positions, one position being the ratchet mode and a second position being the manual mode;
• and
• wherein the recesses of the locking mechanism are spherical indentations;
• and the pin has a spherical end adapted to engage the spherical indentations.

A dental driving tool, comprising:

• a handle adapted to be manually rotated;
• a drive shaft having a locking mechanism;
• a distal end adapted to drive a dental implant into a jawbone, and a proximal end connected to the handle;
• a ratchet assembly at the proximal end of the drive shaft;
• a pin assembly at the handle and releasably engageable with the locking mechanism to provide two different modes of drive rotation, a ratchet mode and a manual mode, to drive the dental implant into the jawbone;
• wherein the ratchet mode uses the ratchet assembly to drive the dental implant, and the manual mode uses the pin assembly to drive the dental implant;
• and
• wherein the pin assembly engages the locking mechanism in the manual mode, and the pin assembly disengages the locking mechanism in the ratchet mode.

A dental driving tool, comprising:

• a handle adapted to be manually rotated;
• a drive shaft having a distal end adapted to drive a dental implant into a jawbone and having a proximal end connected to the handle;
• a ratchet assembly at the drive shaft and including a race and a roller member;
• a pin assembly at the handle and releasably engageable with the drive shaft to provide two different modes of drive rotation, a ratchet mode and a manual mode;
• the ratchet mode is adapted to use the ratchet assembly to drive the dental implant into the jawbone;
• the manual mode is adapted to use engagement between the pin assembly and drive shaft to drive the dental implant into the jawbone;
• wherein the pin assembly locks with the drive shaft in the manual mode so the drive shaft moves in unison when the handle is rotated in a clockwise and counterclockwise direction;
• and
• wherein the pin assembly is disengaged from the drive shaft in the ratchet mode so the drive shaft moves in unison when the handle is rotated in the clockwise direction.