A T-bar type hand tool includes a first part, a second part, a rotary member, a cap and a bearing. The second part is movably extending through a through hole of the first part. The rotary member is connected to the first part. The bearing is mounted to the rotary member and the cap. When rotating the rotary member, the first part is rotated quickly.

A tool includes a first body, a rotary member, a positioning unit and an engaging unit. By the positioning unit and the engaging unit, the rotary member is positioned relative to the first body with dual-positioning feature. When the first body is rotated, the rotary member is positioned by the positioning unit and the engaging unit. The rotary member is not likely to freely rotate because both of the positioning unit and the engaging unit fail when using the tool.

An adjustable prosthetic anatomical holder system may include an adjustable annuloplasty ring, a ring holder, and a positioning handle. The adjustable annuloplasty ring holder facilitates placement and adjustment of the annuloplasty ring during a cardiac surgical procedure. An optional positioning handle holds the adjustable annuloplasty ring during placement and suturing of the ring. The ring holder is constructed from two members that are slidably fit together in telescopic arrangement to accommodate adjustment of the ring size.

A T-bar type hand tool includes a first part, a second part, a rotary member, a cap and a bearing. The second part is movably extending through a through hole of the first part. The rotary member is connected to the first part. The bearing is mounted to the rotary member and the cap. When rotating the rotary member, the first part is rotated quickly.

A precision handle for hand tools has a body, an elastic element, a sheath, a pressing element, and a group of balls. The mounting protrusion protrudes axially from a rear end of the body. The elastic element is mounted in the body. The sheath is mounted around the mounting protrusion. The pressing element is mounted through and engages with the sheath. The group of balls includes a first ball and a second ball. The first ball is mounted in the mounting protrusion and abuts the elastic element. The second ball is mounted between the pressing element and the first ball. The first ball abuts against the second ball at one point of contact when the pressing element is pressed, thereby decreasing the friction between the body and the sheath. Accordingly, the precision handle for hand tools can be operated smoothly and efficiently.

A driving tool includes a body and an auxiliary handle. The body includes a first rod and a second rod perpendicular to each other. The first rod includes an insertion hole and at least one receiving slot. The second rod is mounted between two opposite ends of the first rod. The auxiliary handle includes a connection slot mounted on the body, and an engaging recess. An adjusting member is mounted in the insertion hole and movable in relation to the first rod. At least one engaging member is received in the receiving slot and the engaging recess and is abutted against the adjusting member. Thus, the auxiliary handle is freely rotatable relative to the first rod.

An adjustment tool enables manipulation of a prosthetic anatomical device such as an annuloplasty ring. The tool includes a compression member which is operative for retarding rotation of the adjustment shaft to preclude inadvertent rotation thereof during use of the tool by the surgeon. A locking device is associated with the adjustment tool to enable the releasable attachment of the tool to the anatomical device during its adjustment by manipulation of the tool. The locking device is oriented into operative and inoperative positions by the engagement and disengagement of locking elements. A scale may be provided on the adjustment tool to assist a surgeon in determining the size or amount of adjustment to the size of the anatomical device during its adjustment.

The present invention relates to an extendable folding saw that is lightweight and compact when retracted yet rigid when extended. In one embodiment, the extendable folding saw can have a folding saw and a removably attached extension. The folding saw can have a grip and a pivotally attached saw. The extension can comprise several members that are compactable to a length not much greater than the length of the longest individual member. The members of the extension can have a generally I shaped profile. The extension rod can be attached to the folding saw in a snap-fitting manner for use. A retracted folding saw can be snapped side-by-side to a retracted to extension rod for storage.

Handle consisting of a gripping knob internally provided with a housing cavity in a stable position of a pin, the pin consisting of at least a portion with a larger-diameter section and of a portion with a smaller diameter projecting therefrom. At the top end of the smaller-diameter portion, a retaining member is provided, having a larger diameter with respect to that of the smaller-diameter portion. An elastic bush is housed on the smaller-diameter portion for engagement with the inner surface of the knob. Between the retaining member and the elastic bush, a washer is arranged of a material aimed at minimizing friction.

A pipe wrench is provided with an extendable handle that fits within a cavity of the head. A lever locks the extended length of the extendable handle along a continuous spectrum between a maximum and a minimum extension of the handle. The lever includes cam surfaces. In an unlocked position, the thickness of the lever between the pivot and a friction plate is less than the thickness between the pivot and the friction plate in the locked position. The friction plate is a composite comprising a top lever plate, a midsection, and a concave surface. The lever plate and concave surface include hard, durable materials, and the midsection is a soft elastic material that redistributes frictional forces across the frictional block. The channel-lock prevents inadvertent overextension and/or accidental removal of the extendable handle.