US Patent No: 5,854,822
Number of patents in Portfolio can not be more than 2000
Miniature x-ray device having cold cathode
Stats
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Dec 29, 1998
Issued date -
Jul 25, 1997
filing date -
08/900,609
serial no -
Expired
status
Importance
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Abstract
Generally, the present invention provides a device for insertion into a body and delivery of x-ray radiation, and a method for fabricating such a device. The device includes a connector, the vacuum housing, an anode and a cathode having a granular surface and being composed of a material that allows it to act as a getter. The cathode may also contain diamond material in one embodiment.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 5,452,720 Method for treating brain tumors | 59 | 1993 | |
| 5,428,658 X-ray source with flexible probe | 83 | 1994 | |
| 5,511,107 X-ray phantom apparatus | 24 | 1994 | |
| 5,528,652 Method for treating brain tumors | 91 | 1994 | |
| 5,623,139 CCD X-ray microdensitometer system | 14 | 1994 | |
| 5,635,709 Method and apparatus for measuring radiation dose distribution | 24 | 1995 | |
| 5,748,699 Apparatus for applying X-rays to an interior surface of a body cavity | 34 | 1996 | |
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| 4,607,380 High intensity microfocus X-ray source for industrial computerized tomography and digital fluoroscopy | 48 | 1984 | |
| 4,979,199 Microfocus X-ray tube with optical spot size sensing means | 23 | 1989 | |
| 5,148,463 Adherent focal track structures for X-ray target anodes having diffusion barrier film therein and method of preparation thereof | 17 | 1991 | |
| 5,222,116 Metallic alloy for X-ray target | 15 | 1992 | |
| 5,414,748 X-ray tube anode target | 20 | 1993 | |
| 5,437,277 Inductively coupled RF tracking system for use in invasive imaging of a living body | 186 | 1994 | |
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| 5,153,900 Miniaturized low power x-ray source | 84 | 1990 | |
| 5,369,679 Low power x-ray source with implantable probe for treatment of brain tumors | 43 | 1992 | |
| 5,422,926 X-ray source with shaped radiation pattern | 122 | 1994 | |
| 5,566,221 Apparatus for applying a predetermined x-radiation flux to an interior surface of a body cavity | 90 | 1994 | |
| 5,621,780 X-ray apparatus for applying a predetermined flux to an interior surface of a body cavity | 93 | 1995 | |
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| 5,402,790 Intravascular catheter having combined imaging abrasion head | 54 | 1992 | |
| 5,465,732 Fluoroscopically viewable multifilar calibrated guidewire and method of measuring occlusions with calibrated guidewires | 39 | 1992 | |
| 5,313,949 Method and apparatus for intravascular two-dimensional ultrasonography | 77 | 1993 | |
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| 4,646,338 Modular portable X-ray source with integral generator | 74 | 1983 | |
| 4,694,480 Hand held precision X-ray source | 58 | 1985 | |
| 5,077,771 Hand held high power pulsed precision x-ray source | 56 | 1989 | |
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| 4,669,467 Mode mixer for a laser catheter | 110 | 1985 | |
| 4,913,142 Catheter for laser angiosurgery | 177 | 1987 | |
| 5,290,275 Catheter for laser angiosurgery | 49 | 1991 | |
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| 5,264,801 Active carbon barrier for x-ray tube targets | 15 | 1992 | |
| 5,509,045 X-ray tube having a getter shield and method | 12 | 1995 | |
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| 4,359,660 Series diode X-ray source | 14 | 1980 | |
| 5,165,093 Interstitial X-ray needle | 38 | 1992 | |
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| 5,090,043 X-ray micro-tube and method of use in radiation oncology | 67 | 1990 | |
| RE34421 X-ray micro-tube and method of use in radiation oncology | 53 | 1992 | |
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| 4,563,769 X-Ray generator device | 19 | 1982 | |
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| 4,789,997 Circuit arrangement for producing high voltages | 23 | 1987 | |
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| 4,987,007 Method and apparatus for producing a layer of material from a laser ion source | 97 | 1988 | |
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| 5,087,244 Catheter and method for locally applying medication to the wall of a blood vessel or other body lumen | 247 | 1990 | |
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| 5,101,422 Mounting for X-ray capillary | 15 | 1990 | |
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| 4,924,485 Portable radiography system using a relativistic electron beam | 26 | 1987 | |
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| 5,313,950 Ultrasonic probe | 43 | 1993 | |
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| 5,504,799 X-ray generation tube for ionizing ambient atmosphere | 16 | 1994 | |
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| 4,715,054 Plasma x-ray source | 19 | 1985 | |
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| 4,368,538 Spot focus flash X-ray source | 15 | 1980 | |
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| 4,800,581 X-ray tube | 12 | 1987 | |
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| 5,059,166 Intra-arterial stent with the capability to inhibit intimal hyperplasia | 402 | 1989 | |
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| 5,099,845 Medical instrument location means | 241 | 1990 | |
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| 5,364,336 Therapeutic probe for radiating microwave and ionizing radiation | 39 | 1993 | |
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| 4,191,193 Catheter head-type transducer | 117 | 1977 | |
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| 5,106,360 Thermotherapeutic apparatus | 411 | 1991 | |
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| 5,228,176 Method of manufacture of probe tip ultrasonic transducer | 16 | 1991 | |
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| 4,315,182 Frosted X-ray tube | 3 | 1977 | |
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| 5,425,735 Shielded tip catheter for lithotripsy | 28 | 1993 | |
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| 4,670,894 X-ray source employing cold cathode gas discharge tube with collimated beam | 16 | 1985 | |
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| 4,976,266 Methods of in vivo radiation measurement | 80 | 1988 | |
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| 5,138,220 Field emission cathode of bio-molecular or semiconductor-metal eutectic composite microstructures | 38 | 1990 | |
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| 4,794,931 Catheter apparatus, system and method for intravascular two-dimensional ultrasonography | 433 | 1986 | |
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| 5,422,678 Video processor for enlarging and contracting an image in a vertical direction | 11 | 1994 | |
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| 5,042,486 Catheter locatable with non-ionizing field and method for locating same | 312 | 1990 | |
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| 4,625,324 High vacuum rotating anode x-ray tube | 23 | 1984 | |
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| 4,966,596 Laser atherectomy catheter | 29 | 1988 | |
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| 4,763,671 Method of treating tumors using selective application of heat and radiation | 122 | 1986 | |
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| 5,503,613 Apparatus and method to reduce restenosis after arterial intervention | 167 | 1994 | |
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| 4,702,228 X-ray-emitting interstitial implants | 133 | 1985 | |
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| 5,474,075 Brush-tipped catheter for ultrasound imaging | 44 | 1993 | |
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| 5,444,254 Flexible radiation probe | 54 | 1993 | |
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| 4,701,941 Radiation source | 16 | 1984 | |
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| 5,454,809 Electrosurgical catheter and method for resolving atherosclerotic plaque by radio frequency sparking | 409 | 1994 | |
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| 4,856,036 Method for production of fluoroscopic and radiographic x-ray images and hand held diagnostic apparatus incorporating the same | 29 | 1988 | |
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| 4,344,181 Method and apparatus for measuring the content or quantity of a given element by means of X-ray radiation | 19 | 1980 | |
| 4,636,195 Method and apparatus for removing arterial constriction | 219 | 1985 | |
| 4,824,436 Method for the prevention of restenosis | 233 | 1987 | |
| 5,199,939 Radioactive catheter | 257 | 1990 | |
| 5,469,490 Cold-cathode X-ray emitter and tube therefor | 21 | 1995 | |