Abstract: A putter with a putter head that has a rear hollow cavity enclosed within the putter head body to help move the center of gravity forward and a shaft axis that intersects the center of gravity of the putter head within a predetermined range is disclosed. The putter head may have a heel counterweight to move the center of the gravity of the putter head to the desired direction. The hollow cavity in the putter head may extend from a heel region to the toe region of the putter head. In some examples, the hollow cavity may comprise a plurality of hollow cavities or may be a single cavity located in the heel region or the toe region.

Abstract: A golf ball is disclosed comprising dimple-free zones; such dimple-free zones may be substantially free of surface irregularities, and may be used by a player to align a shot. Unintentional spin and trajectory deviations may be avoided or minimized when a putt or other low-speed shot strikes the golf ball on such a dimple-free zone. In some applications, a plurality of dimple-free zones may be disposed in locations that are distributed symmetrically on a surface of the ball. Methods of manufacturing such a golf ball are also disclosed.

Abstract: A putter with a putter head that has a rear hollow cavity enclosed within the putter head body to help move the center of gravity forward and a shaft axis that intersects the center of gravity of the putter head within a predetermined range is disclosed. The putter head may have a heel counterweight to move the center of the gravity of the putter head to the desired direction. The hollow cavity in the putter head may extend from a heel region to the toe region of the putter head. In some examples, the hollow cavity may comprise a plurality of hollow cavities or may be a single cavity located in the heel region or the toe region.

Abstract: A pressure isolation mechanism for use in a medical procedure includes a lumen, an isolation port in fluid connection with lumen, and a valve having a first state and a second state. The first state occurs when the lumen and the isolation port are connected. The second state occurs when the lumen and the isolation port are disconnected. The lumen remains open for flow of fluid therethrough in the first state and in the second state. The valve is normally in the first state and is switchable to the second state when fluid pressure in the lumen reaches a predetermined pressure level. A pressure transducer can be in fluid connection with the isolation port of the pressure isolation mechanism A fluid delivery system includes a manually operated syringe and a pressure isolation mechanism as described above.

Abstract: A fluid path set including a multi-patient use section adapted for connection with a pump device and a source of injection fluid, and a per-patient use section adapted for removable fluid communication with the multi-patient use section. The per-patient use section includes a pressure isolation mechanism having a first port adapted for connection to the pump device via the multi-patient use section, a second port adapted for connection to a patient, and a pressure isolation port adapted for connection to a source of medical fluid via the multi-patient use section. The per-patient use section includes a valve member biased to a normally open position permitting fluid communication between the first port, the second port, and the pressure isolation port, and movable to a closed position to close the pressure isolation port when fluid pressure reaches a predetermined pressure level sufficient to overcome a biasing force applied to the valve member.

Abstract: A pressure isolation mechanism for use in a medical procedure includes a lumen, an isolation port in fluid connection with lumen, and a valve having a first state and a second state. The first state occurs when the lumen and the isolation port are connected. The second state occurs when the lumen and the isolation port are disconnected. The lumen remains open for flow of fluid therethrough in the first state and in the second state. The valve is normally in the first state and is switchable to the second state when fluid pressure in the lumen reaches a predetermined pressure level. A pressure transducer can be in fluid connection with the isolation port of the pressure isolation mechanism A fluid delivery system includes a manually operated syringe and a pressure isolation mechanism as described above.

Abstract: A pressure isolation mechanism for use in a medical procedure includes a lumen, an isolation port in fluid connection with lumen, and a valve having a first state and a second state. The first state occurs when the lumen and the isolation port are connected. The second state occurs when the lumen and the isolation port are disconnected. The lumen remains open for flow of fluid therethrough in the first state and in the second state. The valve is normally in the first state and is switchable to the second state when fluid pressure in the lumen reaches a predetermined pressure level. A pressure transducer can be in fluid connection with the isolation port of the pressure isolation mechanism A fluid delivery system includes a manually operated syringe and a pressure isolation mechanism as described above.

Abstract: An injector system includes a powered injector, a pressurizing chamber in operative connection with the powered injection, a fluid path in fluid communication with the pressurizing chamber, and a manual control in fluid connection with the fluid path. The manual control includes at least one actuator for controlling the injector through application of force by an operator. The actuator provides tactile feedback of pressure in the fluid path to the operator via a fluid connection therewith. An injection system for use in angiography includes a source of saline, a pump in fluid connection with the source of saline to pressurized the saline, a source of contrast, a contrast valve in fluid connection with the source of contrast, a powered injector in fluid connection with the contrast valve, and a pressure isolation mechanism.

Abstract: The fluid injector system includes a source of injection fluid, a pump device, and a fluid path set in fluid connection with the source of injection fluid and the pump device. The fluid path set includes a drip chamber including an elongated body having a raised projection from substantially a top end to substantially a bottom end, the elongated body configured to receive and contain the injection fluid. A fluid level sensing mechanism is operably associated with a fluid control device, and includes a support for the drip chamber body, wherein the support is adapted such that the raised projection is in operational contact with a fluid level sensor associated with the support. The fluid level sensing mechanism is operable to transmit ultrasonic or light energy through the raised projection to be sensed by the fluid level sensor for sensing the injection fluid level in the drip chamber.

Abstract: An injector system includes a powered injector, a pressurizing chamber in operative connection with the powered injection, a fluid path in fluid communication with the pressurizing chamber, and a manual control in fluid connection with the fluid path. The manual control includes at least one actuator for controlling the injector through application of force by an operator. The actuator provides tactile feedback of pressure in the fluid path to the operator via a fluid connection therewith. An injection system for use in angiography includes a source of saline, a pump in fluid connection with the source of saline to pressurized the saline, a source of contrast, a contrast valve in fluid connection with the source of contrast, a powered injector in fluid connection with the contrast valve, and a pressure isolation mechanism.

Abstract: The fluid injector system includes a source of injection fluid, a pump device, and a fluid path set in fluid connection with the source of injection fluid and the pump device. The fluid path set includes a drip chamber including an elongated body and a raised projection. A fluid level sensing mechanism is operably associated with a fluid control device, and includes a drip chamber support for supporting the drip chamber body and a fluid level sensor associated with the drip chamber support. The drip chamber support is adapted to support the drip chamber body such that the raised projection is in operational contact with the fluid level sensor and the fluid level sensing mechanism is operable to transmit ultrasonic or light energy through the raised projection to be sensed by the fluid level sensor for sensing the injection fluid level in the drip chamber.

Abstract: The fluid injector system includes a source of injection fluid, a pump device, a fluid control device operably associated with the pump device, and a fluid path set in fluid connection with the source of injection fluid and the pump device. The fluid path set includes a drip chamber including an elongated body having a top end, a bottom end and a raised projection, the raised projection being substantially rectangular in shape and extending longitudinally from the top end along the drip chamber body and terminating adjacent to the bottom end. A fluid level sensing mechanism is operably associated with the fluid control device, and includes a drip chamber support for supporting the drip chamber body and a fluid level sensor associated with the drip chamber support.

Abstract: A golf club having a shaft, a grip, and a head provides improved balance and feel. The shaft has a shaft distal end, a shaft axis defining a vertical plane, and a forward bend section proximate the shaft distal end. The head is secured to the shaft distal end and includes a striking face, a trailing edge, a club head center of gravity, a heel section having a heel section center of gravity, and a toe section having a toe section center of gravity. The heel section center of gravity is forward of the striking face and the club head center of gravity is further from the trailing edge than the striking face. The forward bend section of the shaft projects from the vertical plane at an attachment angle such that the shaft distal end is forward of the heel section center of gravity.

Abstract: A golf club having a shaft, a grip, and a head provides improved balance and feel. The shaft has a shaft distal end, a shaft axis defining a vertical plane, and a forward bend section proximate the shaft distal end. The head is secured to the shaft distal end and includes a striking face, a trailing edge, a club head center of gravity, a heel section having a heel section center of gravity, and a toe section having a toe section center of gravity. The heel section center of gravity is forward of the striking face and the club head center of gravity is further from the trailing edge than the striking face. The forward bend section of the shaft projects from the vertical plane at an attachment angle such that the shaft distal end is forward of the heel section center of gravity.

Abstract: A golf club having a shaft, a grip, and a head provides improved balance and feel. The shaft has a shaft distal end, a shaft axis defining a vertical plane, and a forward bend section proximate the shaft distal end. The head is secured to the shaft distal end and includes a striking face, a trailing edge, a club head center of gravity, a heel section having a heel section center of gravity, and a toe section having a toe section center of gravity. The heel section center of gravity is forward of the striking face and the club head center of gravity is further from the trailing edge than the striking face. The forward bend section of the shaft projects from the vertical plane at an attachment angle such that the shaft distal end is forward of the heel section center of gravity.

Abstract: A golf club with a shaft and an asymmetrical head, wherein said head has a gravitational center which is further from a trailing edge than said striking face and is disposed on a vertical plane which includes said grip axis.

Abstract: The fluid injector system includes a source of injection fluid, a pump device, a fluid control device operably associated with the pump device, and a fluid path set in fluid connection with the source of injection fluid and the pump device. The fluid path set includes a drip chamber including an elongated body having a top end, a bottom end and a raised projection, the raised projection being substantially rectangular in shape and extending longitudinally from the top end along the drip chamber body and terminating adjacent to the bottom end. A fluid level sensing mechanism is operably associated with the fluid control device, and includes a drip chamber support for supporting the drip chamber body and a fluid level sensor associated with the drip chamber support.

Abstract: The fluid delivery system generally includes a source of injection fluid, a pump device a fluid path set disposed between the source of injection fluid and the pump device, and a fluid control device. The fluid path set includes a multi-position valve. The fluid control device is operatively associated with the fluid path set and includes a valve actuator adapted to operate the multi-position valve. The valve actuator is adapted to close the multi-position valve to isolate the pump device from a patient and stop flow of the injection fluid to the patient at substantially any pressure or flow rate generated by the pump device for delivering a sharp bolus of the injection fluid to the patient. The valve actuator is generally adapted to selectively place the pump device in fluid communication with the source of injection fluid for supplying the injection fluid to the pump device and the patient.

Abstract: Surgical instruments include a handle, gas and electrical conduits, a hollow elongated electrode, elongated insulating sheath, and actuator mechanism. The handle has distal and proximal ends, the proximal end branching to form two arm-like portions and the distal end widening to form a tubular body portion having features sized for receiving at least an index finger and a thumb. Gas and electrical conduits are disposed within the handle for connection to external gas and electrical sources. A hollow elongated electrode extends from the handle, defines a gas conduit along its length, and is operably coupled to the gas and electrical conduits. An elongated insulating sheath encloses the electrode. An actuator mechanism alternates between two states to turn the instrument on and off. A sheath actuator slidably retracts and extends the elongated insulating sheath to increase or decrease exposure of the electrode. Methods for operating electrosurgical instrument are also disclosed.