Abstract: A cement restrictor for use in surgical procedures such as total hip replacement, for example, includes a pressure transducer and a transmitter electrically coupled to the pressure transducer. The cement restrictor is configured to be placed at a distal end of a pre-drilled bone canal in a patient's femur, for example, such that the pressure transducer may generate an output signal in response to the presence of bone cement injected into the bone canal and around the cement restrictor. The transmitter is configured to transmit this output pressure signal to an external receiver outside the patient's body.

Abstract: A positioning device for assisting an individual in properly positioning the club face of a golf club so that a golf ball travels a desired path when struck by the golf club. The positioning device includes a hollow body, which is generally symmetrically disposed about the shaft of a golf club. The body includes an upper section and a lower section and an opening therebetween. The opening in the body receives the shaft of the golf club. The upper and lower sections each have a left and a right side. The right side of the upper section is hingedly connected to the right side of the lower section. A fastener detachably connects the left side of the upper section to the right side of the lower section. The upper section has a recess formed therein for receiving a tubular spirit. The tubular spirit is curved about the axis of the shaft of the golf club. The curve of the spirit level extends in a first plane. the first plane extends substantially perpendicular to the axis of the shaft of the golf club.

Abstract: A positioning device (A) for assisting an individual in properly positioning the club face of a golf club so that a golf ball travels a desired path when struck by the golf club. The positioning device (A) includes a hollow body (2) which is generally symmetrically disposed about the shaft (5) of a golf club. The body includes an upper section (4) and a lower section (6) and an opening (32) therebetween. The opening (32) in the body (2) receives the shaft (5) of the golf club. The upper and lower sections each have a left and a right side. The right side of the upper section is hingedly connected to the right side of the lower section. A fastener detachably connects the left side of the upper section to the left side of the lower section. The upper section (4) has a recess formed therein for receiving a tubular spirit (60). The tubular spirit (60) is curved about the axis of the shaft of the golf club. The curve of the spirit level extends in a first plane.

Abstract: A positioning device for assisting an individual in properly positioning the club face of a golf club so that a golf ball travels a desired path when struck by the golf club. The positioning device includes a hollow body which is generally symmetrically disposed about the shaft of a golf club. The body includes a front surface and a rear surface and an opening extending therebetween. The opening in the body receives the shaft of a golf club. The body further includes an upper section and a lower section each having left and right sides. The right side of the upper section is hingedly connected to the right side of the lower section. A fastener detachably connects the left side of the upper section to the left side of the lower section. The upper section has a recess formed therein for receiving a tubular spirit level. The tubular spirit level is curved about the axis of the shaft of the golf club. The curve of the spirit level extends in a first plane.