Abstract: Provided is a method of inspecting an assembly defect of a gas sensor in a mass-production process. The sensor element included in a second constituting member includes a heater therein and an electrode terminal for a heater in its surface, and the first constituting member includes a contact point member contacting the terminal in a state where the sensor element is inserted into its opening. A first heater resistance value before incorporated is measured to associate the resistance value with an identification information of the sensor element, a second heater resistance value is measured via a contact point member, in a state where the first and second constituting members are integrated with each other, to associate the resistance value with the identification information of the sensor element, and when a difference value between these resistance values associated with the identical identification information exceeds a threshold value, it is determined that an assembly defect occurs.

Abstract: Provided is a method of inspecting an assembly defect of a gas sensor in a mass-production process. The sensor element included in a second constituting member includes a heater therein and an electrode terminal for a heater in its surface, and the first constituting member includes a contact point member contacting the terminal in a state where the sensor element is inserted into its opening. A first heater resistance value before incorporated is measured to associate the resistance value with an identification information of the sensor element, a second heater resistance value is measured via a contact point member, in a state where the first and second constituting members are integrated with each other, to associate the resistance value with the identification information of the sensor element, and when a difference value between these resistance values associated with the identical identification information exceeds a threshold value, it is determined that an assembly defect occurs.

Abstract: A connector is provided with a first fastening member 55 having an engagement hole 53 freely engaging with a head portion of an implant 41 screwed and inserted to a body of vertebra and a fastening groove 57, a second fastening member 63 having an insertion hole 61 freely inserting a rod 49 therethrough and a fastening groove 65, and a fastening device 69 freely penetrating a through hole 59 crossing to the fastening groove 57 in the first fastening member 55 and a through hole 67 crossing to the fastening groove 65 in the second fastening member 63, and an angle adjusting and engaging portion is provided on connecting surfaces 55a and 63a between the first fastening member 55 and the second fastening member 63.

Abstract: A connector is provided with a first fastening member 55 having an engagement hole 53 freely engaging with a head portion of an implant 41 screwed and inserted to a body of vertebra and a fastening groove 57, a second fastening member 63 having an insertion hole 61 freely inserting a rod 49 therethrough and a fastening groove 65, and a fastening device 69 freely penetrating a through hole 59 crossing to the fastening groove 57 in the first fastening member 55 and a through hole 67 crossing to the fastening groove 65 in the second fastening member 63, and an angle adjusting and engaging portion is provided on connecting surfaces 55a and 63a between the first fastening member 55 and the second fastening member 63.

Abstract: A slider 37 having a rod-pressing portion 35 for pressing a rod 23 into a rod-engaging recess 25 is movably provided on a holder body 27 having the rod-engaging recess 25. The holder body 27 includes a pressing state holding mechanism for relatively moving the slider 37 with respect to the holder body 27 to hold the rod 23 in a state in which the rod 23 is pressed against the rod-engaging recess 25 by the rod-pressing portion 35. The pressing state holding mechanism includes a screw rod movably, detachably and threadedly engaged with a screw hole formed in the holder body 27. A tip end of the screw rod 45 and the slider 37 connected to each other such that they permit rotation of the screw rod 45 with respect to the slider 37 but move integrally with respect to the holder body 27, and the slider 37 can be attached to and detached from the slider 37.

Abstract: Hook cable including a hook for hooking to an arcus posterior in an atlanto. A cable which can freely bend is integrally provided in a base portion of the hook.

Abstract: A connector is provided with a first fastening member 55 having an engagement hole 53 freely engaging with a head portion of an implant 41 screwed and inserted to a body of vertebra and a fastening groove 57, a second fastening member 63 having an insertion hole 61 freely inserting a rod 49 therethrough and a fastening groove 65, and a fastening device 69 freely penetrating a through hole 59 crossing to the fastening groove 57 in the first fastening member 55 and a through hole 67 crossing to the fastening groove 65 in the second fastening member 63, and an angle adjusting and engaging portion is provided on connecting surfaces 55a and 63a between the first fastening member 55 and the second fastening member 63.

Abstract: A connector is provided with a first fastening member 55 having an engagement hole 53 freely engaging with a head portion of an implant 41 screwed and inserted to a body of vertebra and a fastening groove 57, a second fastening member 63 having an insertion hole 61 freely inserting a rod 49 therethrough and a fastening groove 65, and a fastening device 69 freely penetrating a through hole 59 crossing to the fastening groove 57 in the first fastening member 55 and a through hole 67 crossing to the fastening groove 65 in the second fastening member 63, and an angle adjusting and engaging portion is provided on connecting surfaces 55a and 63a between the first fastening member 55 and the second fastening member 63.

Abstract: Connector connecting an implant to a bone connecting rod. The connector includes a first fastening member provided with an engagement hole freely engaging with a head portion of the implant anchored to the vertebral bodies and a fastening groove. A second fastening member is provided with an insertion hole freely inserting the rod therethrough and a fastening groove. A through hole penetrating in a direction crossing to the fastening groove in the first fastening member and a through hole penetrating in a direction crossing to the fastening groove in the second fastening member are provided with fastening devices.

Abstract: A spinal implant for an osteosynthesis device has a vertebral connecting rod for interconnecting adjacent vertebral bodies and comprises an implant body including a head section having a threaded portion, a rod retaining recess opening outward for retaining the connecting rod therein and a slanted engagement surface formed on a bottom wall of the rod retaining recess. The spinal implant further includes a nut member and a rod movement stabilizing device to preserve mobility to the connecting rod.

Abstract: A connector is provided with a first fastening member 55 having an engagement hole 53 freely engaging with a head portion of an implant 41 screwed and inserted to a body of vertebra and a fastening groove 57, a second fastening member 63 having an insertion hole 61 freely inserting a rod 49 there through and a fastening groove 65, and a fastening device 69 freely penetrating a through hole 59 crossing to the fastening groove 57 in the first fastening member 55 and a through hole 67 crossing to the fastening groove 65 in the second fastening member 63, and an angle adjusting and engaging portion is provided on connecting surfaces 55a and 63a between the first fastening member 55 and the second fastening member 63.

Abstract: The present invention has a structure provided with a hook 39 for hooking to an arcus posterior 11 in an atlanto 1, in which a cable 41 which can freely bend is integrally provided in a base portion of the hook 39, and the hook 39 is provided with a projection 43 on a surface hooked to the arcus posterior 11. Further, a screw hole 29 is provided in a head portion 27 of a screw 21 freely inserting to the atlanto 1 from an epistropheus 3, an engagement groove 31 communicated with the screw hole 29 is provided, a cable 41 provided in the hook 39 freely hooked to the arcus posterior 11 in the atlanto 1 is provided so as to be freely engaged with the engagement groove 31, and a fixing screw 33 freely fixing the cable 41 engaged with the engagement groove 31 is provided so as to be freely meshed with the screw hole 29.

Abstract: A sensor for measuring nitrogen oxide (NOx) in a gas by decomposing NOx in the gas and measuring an amount of oxygen generated by the decomposition includes: means for introducing the gas to a first inner space under a first diffusion resistance and connected with an external space, means for controlling an oxygen partial pressure in an atmosphere in the first inner space to be a predetermined low value at which NO is not decomposed substantially by a main pump means, means for introducing a controlled atmosphere of the first inner space into a second inner space which is connected with the first inner space and which is under a second diffusion resistance, and means for converting the atmosphere into an electric signal corresponding to the quantity of oxygen generated by decomposition or reduction of NOx contained in the atmosphere by an electric signal conversion means.

Abstract: A spinal implant for an osteosynthesis device, which implant includes an implant body 18 having a rod retaining section 28, 54 to retain a connecting rod 14, and an anchoring screw section 20 extending from the implant body. The anchoring screw section 20 has a spinal opening 24, 46 to permit borne ingrowth therein. The rod retaining section 28, 54 includes a rod movement stabilizing means 35. A nut member 32, 52 is screwed onto a head section of the implant body, and has a tool engagement groove 56. A driver tool 70, 78 has an engaging segment or tip 72a, 78c, that engages with the tool engagement groove of the nut member. A nut guide 80 is provided for momentarily guiding and retaining the nut in place such that it is subsequently removed to the head section of the implant body with the use of the driver tool 78 passing through the nut guide.

Abstract: A slider 37 having a rod-pressing portion 35 for pressing a rod 23 into a rod-engaging recess 25 is movably provided on a holder body 27 having the rod-engaging recess 25. The holder body 27 includes a pressing state holding mechanism for relatively moving the slider 37 with respect to the holder body 27 to hold the rod 23 in a state in which the rod 23 is pressed against the rod-engaging recess 25 by the rod-pressing portion 35. The pressing state holding mechanism includes a screw rod movably, detachably and threadedly engaged with a screw hole formed in the holder body 27. A tip end of the screw rod 45 and the slider 37 connected to each other such that they permit rotation of the screw rod 45 with respect to the slider 37 but move integrally with respect to the holder body 27, and the slider 37 can be attached to and detached from the slider 37.

Abstract: Disclosed are a gas sensor and a gas concentration controller each comprising a comparative amplifier for comparing a reference voltage with a terminal voltage between a reference electrode and an inner pumping electrode to obtain a difference therebetween, and amplifying the difference with a predetermined gain to make an output. Wiring connection is arranged so that the output voltage from the comparative amplifier is applied, as a pumping voltage to an oxygen pump, between the electrode and an outer pumping electrode. A resistor for detecting a pumping current is inserted and connected between an output terminal of the comparative amplifier and the electrode of the oxygen pump. A short circuit is formed between both ends of the resistor by using a capacitor. One electrode of the capacitor is connected to a non-inverting terminal of a differential amplifier, and the other electrode is connected to an inverting terminal of the differential amplifier.

Abstract: A system is constructed such that a voltage between an inner pumping electrode and a reference electrode is measured to determine a difference between a measured voltage and a reference voltage so that a pumping voltage is controlled by using the differential voltage. Specifically, a comparative amplifier is provided for comparing the reference voltage with the terminal voltage between the reference electrode and the inner pumping electrode, and amplifying the difference therebetween with a predetermined gain to make an output. The system is wired and connected such that the output voltage (differential voltage) from the comparative amplifier is applied, as the pumping voltage supplied to an oxygen pump, between the inner pumping electrode and an outer pumping electrode. The inner pumping electrode is grounded. Accordingly, for example, when the oxygen pump is used, it is possible to effectively avoid the oscillation phenomenon in the feedback control system for the control voltage for the oxygen pump.

Abstract: A method for measuring nitrogen oxide (NOx) in a gas by decomposing NOx in the gas and measuring an amount of oxygen generated by the decomposition includes: introducing the gas to a first inner space under a first diffusion resistance and connected with an external space, controlling an oxygen partial pressure in an atmosphere in the first inner space to be a predetermined low value at which NO is not decomposed substantially by a main pump means, introducing a controlled atmosphere of the first inner space into a second inner space which is connected with the first inner space and which is under a second diffusion resistance, and converting the atmosphere into an electric signal corresponding to the quantity of oxygen generated by decomposition or reduction of NOx contained in the atmosphere by an electric signal conversion means.

Abstract: A gas sensor for measuring a quantity of specific component in a measuring gas includes a main pump means which has an electrochemical pump cell. The electrochemical pump cell includes a solid electrolyte partition exposed to external space, an inner pump electrode and an outer pump electrode formed on the inner surface and outer surface of the solid electrolyte partition, respectively. The main pump means treats oxygen contained in the measuring gas introduced from the outer space by pumping processing on the basis of a control voltage applied between the inner pump electrode and the outer pump electrode. An RLC element which has a specific electric characteristic value corresponding to a characteristic value of the electrochemical pump cell is connected in parallel with the electrochemical pump cell.

Abstract: A system for detecting deterioration of an exhaust gas control catalyst provided in an exhaust gas passage through which a combustion exhaust gas is discharged, including a processing zone communicating with a portion of the passage which is downstream of the catalyst and a pumping cell including an oxygen ion conductive solid electrolyte layer and a pair of electrodes one of which is exposed to the processing zone, wherein the pumping cell pumps oxygen out of the processing zone so as to control oxygen partial pressure in the processing zone which corresponds to a monitor voltage, at a value at which the combustible gas component within the processing zone cannot be burned, and the oxygen concentration in the combustion exhaust gas is obtained based on a pumping current flowing between the pair of electrodes of the pumping cell, whereby the degree of deterioration of the catalyst is determined on the basis of the obtained oxygen concentration.