公开(公告)号：US3329148A

公开(公告)日：1967-07-04

申请号：US48897765

申请日：1965-09-21

Applicant: DYNAPOWER SYSTEMS CORP OF CALI

Inventor： DENIS KENDALL WILLIAM

IPC: A61N1/40 ,  A61N5/00

CPC classification number: A61N1/40

公开(公告)号：US3168098A

公开(公告)日：1965-02-02

申请号：US20690362

申请日：1962-07-02

Applicant: DYNAPOWER SYSTEMS CORP

Inventor： DENIS KENDALL WILLIAM ,  YARGER FRANK A

IPC: A61N1/06 ,  A61N5/04

CPC classification number: A61N5/04 ,  A61N1/06

公开(公告)号：GB1201586A

公开(公告)日：1970-08-12

申请号：GB356069

申请日：1969-01-22

Applicant: DYNAPOWER SYSTEMS CORP

IPC: A61N1/40

Abstract: 1,201,586. Electrotherapeutic apparatus. DY NAPOWER SYSTEMS CORP OF CALIFORNIA. 22 Jan., 1969 [15 Feb., 1968], No. 3560/69. Heading A5R. Electrotherapeutic apparatus includes a power radiating head 10 having means for the transmission of high frequency radiation including coupled primary and secondary coils, 12 and 13, and a capacitor 14 connected to the secondary coil to form a tank circuit tuned to a predetermined high frequency, input means 18 to supply pulses of said frequency, a network 25 and transmission line coupled between the input means 18 and primary coil 12, the network having a variable impedance element and means including a servo loop apparently responsive to patient induced detuning of the circuit to vary the impedance of the element. The apparatus is generally similar to that described in Specification 1,150,524, except that the variable condenser 27 is not adjusted manually, but by an electric motor 73 controlled by the feed-back from an inductance 71 in the head 10 through a servo-loop 70. The loop 70 comprises a pair of band-pass filters 76, 77 feeding a differential amplifier of which the output is fed to the motor 73. The filters are each tuned to a band one on either side of the predetermined frequency of the main circuit so that de-tuning caused by the presence of the patient is picked up by the inductance 71 and the motor 73 is energised to adjust the condenser 27 in such a direction as to restore the system to its original tuning.

公开(公告)号：GB997058A

公开(公告)日：1965-06-30

申请号：GB700163

申请日：1963-02-21

Applicant: DYNAPOWER SYSTEMS CORP

IPC: A61N1/40

Abstract: 997,058. Electromedical apparatus. DYNAPOWER SYSTEMS CORPORATION. Feb. 21, 1963 [July 2, 1962], No. 7001/63. Heading A5R. Electrotherapeutic apparatus comprises a radiating treatment head and a circuit for applying high-frequency pulses to the head including an oscillator, an amplifier, a vibrator to interrupt the amplified signal at predetermined intervals determined by a first step switch, a power amplifier transmitting the pulses to the treatment head and second step switch means connected to the power amplifier to control the amplitude of the pulses. High frequency oscillations generated and doubled by an oscillator 14 which includes a crystal 24 are transmitted to a frequency doubling amplifier 16, a power amplifier 17 and a pi network 19 to a treatment head comprising a tank circuit which includes a variable capacitor 13 and a secondary coil 10. Transmission of oscillations by the amplifier 16 is intermittently interrupted by a switching input provided by a multivibrator 33 connected at 30 to the amplifier, the pulse interval being controlled by a step resistance selector 45 in the grid input of the multivibrator. The amplitude of the output pulses is adjusted by a second step resistance selector 72 connected at 67 to a pulse amplitude control 60 which is connected at 63 to screen grids 86 of the valves 56 of the power amplifier. The second step resistance selector 72 is arranged in series with an auxiliary step resistance selector 76 which is mechanically connected to be operated simultaneously with the step resistance selector 45 controlling the pulse intervals so that an adjustment to vary the pulse interval does not result in an undesirable change in pulse amplitude. A feedback coupling 64 from a point 87 between the pi network and the radiating head to the grid 65 and plate 66 of one tube 61b of the pulse amplitude control 60 causes a drop in voltage applied to the grids of the power amplifier valves, to compensate for any undesirable increase in output amplitude. The reading on a meter 96 connected between the first and second step resistance selectors varies in response to operation of either or both selectors.

公开(公告)号：GB981988A

公开(公告)日：1965-02-03

申请号：GB700063

申请日：1963-02-21

Applicant: DYNAPOWER SYSTEMS CORP

IPC: A61N1/06 ,  A61N5/04

Abstract: 981,988. Electromedical treatment. DYNA-POWER SYSTEMS CORPORATION. Feb. 21, 1963 [July 2, 1962], No. 7000/63. Heading A5R. [Also in Division H4] An electrotherapeutic treatment head comprises a casing formed by a metallic shell 10 with a front opening 11 and a non-metallic cover 43, a non- metallic partition 16 transversely of the casing housing front and rear compartments, a multiple loop secondary coil 21 in the front compartment, a variable capacitor 28 in the rear compartment and a primary coil 41 located between the capacitor and the secondary coil and carried by the partition. The secondary coil, which emits highfrequency electromagnetic radiation, is secured to the partition by plastic lugs 24 having recesses which receive the turns of the coil. The primary coil 41 is also supported in recesses in the lugs. The capacitor 28, which is in series with the secondary coil, is supported on the rear of the partition by a plastic block 33 and comprises stator plates 29 and rotor plates 30. The capacitance of the capacitor is varied by operating an external knob 37. A capacitor 44 is disposed in series with the primary coil.

公开(公告)号：GB1030918A

公开(公告)日：1966-05-25

申请号：GB3289964

申请日：1964-08-12

Applicant: DYNAPOWER SYSTEMS CORP OF AMER

IPC: A61N1/06 ,  A61N5/04

Abstract: 1,030,918. Aerials; R.F. couplings. DYNAPOWER SYSTEMS CORPORATION OF CALIFORNIA. Aug. 12, 1964 [Aug. 26, 1963], No. 32899/64. Heading H4A. [Also in Division A5] A radiation head comprises a metallic shell 10 with a non-metallic cover 44, dielectric means 16 supporting primary and secondary coils 27, 23 about the longitudinal axis of the shell, a capacitor 26 disposed rearwardly of the cover and connected across the secondary coil 23 and the primary coil having a high voltage input connection 37. The primary and secondary coils are supported in spiral grooves 21, 20 in a dielectric partition plate 19, the grooves being closed by a second dielectric partition plate 22 and the primary coil being sheathed and having one turn which is located between two successive turns of the secondary coil. The ends of the secondary coil are connected by connectors 32, 34 to the plates 28, 29, respectively, of the capacitor 26 which is adjustable only when the cover is removed and which is supported by the partition. The high voltage primary coil input connection 33 and an input capacitor 38 are located so that the point 41 of the secondary coil nearest to them is nearer the null voltage point 43 than the ends of the secondary coil as measured along the length of the coil. This reduces the risk of arcing between the input connection and the secondary coil. In an alternative construction (Figs. 3 to 6, not shown), the secondary coil is supported in dielectric blocks secured on one side of the partition, the primary coil being similarly supported on the opposite side of the partition. The adjustable capacitor across the secondary coil is supported by the partition on the same side as the secondary coil.

公开(公告)号：GB982110A

公开(公告)日：1965-02-03

申请号：GB699963

申请日：1963-02-21

Applicant: DYNAPOWER SYSTEMS CORP

IPC: A61N5/01

Abstract: 982,110. Electromedical apparatus. DYNAPOWER SYSTEMS CORPORATION. Feb. 21, 1963 [April 17, 1962], No. 6999/63. Heading A5R. A device for supporting an electrotherapeutic treatment head on a cabinet comprises an articulated arm assembly connected, by a joint 25 pivoted about a horizontal axis, to a post 14, which is pivotal about a vertical axis and supported in a sleeve 19 extending through the cabinet wall, an electrical lead 35 extending through the arms and joints of the assembly, which are hollow, the joints providing frictional resistance to relative movement of the parts of the assembly and including means for locking them against rotation and the post having a flange 21 which transmits the load of the assembly to the cabinet via the sleeve. The post 14, which is hollow, is rotatable through 180 degrees in the sleeve 19 fixed in the top of the cabinet. The joint 25 comprises coaxial cups 37, 36'fixed to. the post and a hollow arm 31 respectively, the cups engaging one another about their rims. A pin 41, coaxial with the cups, is threaded at one end to one cup 36 and connected at the other end to a handle 40, by which the pin may be tightened to lock the joint. When the joint is loosened, the cups are held in frictional engagement by a spring 45. A cable 35, interconnecting the head with electrical circuits in the cabinet, passes through the post, openings 46, 47 in the cups and the arm 31. The arm 31 is joined by a similar joint 32 to a second hollow arm. The head 12 is carried by a bracket 58, frictionally pivotally connected to a second bracket 56, a handle 71 for locking the joint so formed being provided. The second bracket is connected to a tubular insert 52 in the second arm, a spring 55 tightening the bracket against a plug 50 screwed in the end of the arm. The insert 52 and the brackets are frictionally rotatable relative to the plug 50 and the arm about an axis 30, which is perpendicular to the pivotal axis 29 of the brackets.

公开(公告)号：GB1150524A

公开(公告)日：1969-04-30

申请号：GB2846067

申请日：1967-06-20

Applicant: DYNAPOWER SYSTEMS CORP OF CALI

Inventor： KENDALL WILLIAM DENIS

IPC: A61N1/40

Abstract: 1,150,524. Electrotherapeutic apparatus. DYNAPOWER SYSTEMS CORP. OF CALIFORNIA. 20 June, 1967, No. 28460/67. Heading A5R. ' lectrotherapeutic apparatus for treating a patient with pulsed high frequency radiation comprises an input source 18 of pulsed high frequency energy in the megacycle range which is connected via a network 28 and the core of a co-axial cable 29 to the primary coil 12 of inductively coupled primary and secondary coils 12, (13) contained in the treatment head 15, (10), the network: having a variable capacitor 27 for tuning the apparatus and being contained with the input source in a console 41 while the secondary coil in the treatment head is connected to a non-adjustable capacitor (14). As described, the pi-network includes a further variable capacitor 26 and the treatment head includes an indicator lamp 50 inductively coupled to the primary and secondary coils. The treatment head (10) (Figures 3, 5, not shown) is supported on an arm from the console and the variable capacitor 27 is adjusted via a cable (45) by a knob 40 on the control panel of the console. The high frequency energy comprises pulses (Figure 2, not shown) of signals at 27.12 megacycles, the amplitude of the signal and the intervals of the pulses being variable.