Classifications

• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
  • G03B42/00—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means
  • G03B42/02—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means using X-rays
  • G03B42/04—Holders for X-ray films
  • G03B42/042—Holders for X-ray films for dental applications
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
  • A61B6/44—Constructional features of apparatus for radiation diagnosis
  • A61B6/4429—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units
  • A61B6/4435—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit and the detector unit being coupled by a rigid structure
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
  • A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
  • A61B6/51—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for dentistry
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
  • A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
  • A61B6/51—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for dentistry
  • A61B6/512—Intraoral means
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
  • A61B6/58—Testing, adjusting or calibrating thereof
  • A61B6/587—Alignment of source unit to detector unit

Definitions

• the present invention is a sensor holder apparatus having a bite block and aiming ring mounted to a guide arm, for use during dental x-ray procedures. More particularly, the invention is a modular bite block and sensor holder assembly having a sensor support or guide arm, such that a given sensor can be used with bite blocks for different x-ray procedures. Also, provided is an improved aiming ring for use in dental x-ray procedures. Sensor holders of various designs can be removably affixed to more than one location on the support arm, facilitating a plurality of dental x-ray procedures.
• Dental radiographs are made using x-ray examination units, often including an x-ray cone or tube positioned proximate the patient and aligned to take x-rays of certain teeth.
• Dental x-ray sensors including films, charge coupled devices, phosphor imaging plates or the like, often have a generally flat or plate- like configuration and standardized dimensions so that the sensor can be placed into the oral cavity. The sensor is placed into the patient's mouth and held in place proximate to the tooth or teeth to be examined. The x-ray's are directed through the target teeth and then through the sensor. It has been found that proper orientation of the sensor is required to eliminate distortions and improper focus.
• sensor carriers with "bite blocks” have been developed. These devices often have a plate for holding the sensor and another plate that the patient bites down upon to position the device and the carried sensor.
• a bite block is shown for example, in U.S. Pat. No. 3,473,026.
• Different sensors are often used depending upon the area of the mouth to be examined. This may include for example, endo, posterior, anterior, left, right, upper and lower bite wings, and the like.
• Known bite blocks and sensor holders have been individually designed and manufactured for each different type of sensor. The dimensions of the sensor and the holder dictate the degree of secured positioning of the sensor in the holder.
• a dental professional may have a large number of x-ray sensors with varying sizes and shapes, and hence, a similarly large number of sensor holders. The dental professional is often faced with employing a different sensor or set of sensors, holders and bite blocks depending upon the particular x-ray procedure being employed. At best, it is time consuming to change between sensors, sensor holders and bite blocks.
• a dental bite block and sensor holder assembly comprises a bite block configured to detachably affix to a sensor holder. Affixing means are provided between the bite block and the sensor holder such that the sensor holder is removably affixed to the bite block.
• Fig. 1 is a perspective, exploded view of a bite block and sensor holder assembly, embodying the concepts of the present invention
• Fig. 2 is a perspective, exploded view of an alternative embodiment of a bite block and sensor holder assembly, also embodying the concepts of the present invention
• FIG. 3 is a perspective, exploded view of another alternative embodiment of a bite block and sensor holder assembly, also embodying the concepts of the present invention
• Fig. 4 is an alternative embodiment of the sensor holder portion of the invention as depicted in Fig. 1 ;
• Fig. 5 is an alternative embodiment of an aiming ring and bite block assembly according to the invention
• Fig. 6 is an alternative embodiment of an aiming ring and bite block assembly according to the invention
• Fig. 7 is a perspective view of an alternative embodiment of a sensor folder assembly according to the present invention
• Fig. 8 is a top plan view of the assembly of Fig. 7;
• Fig. 9 is an end view of the assembly of Fig. 7;
• Fig. 10 is an alternative embodiment of an aiming ring and bite block assembly according to the invention.
• Fig. 11 is a top plan view of the assembly of Fig. 10;
• Fig. 12 is an end view of the assembly of Fig. 10;
• Fig. 13 is a perspective view of an assembly as in Fig. 7 showing the assembly in a different configuration than Fig. 7;
• Fig. 14 is a top plan view of the assembly of Fig. 13;
• Fig. 15 is an end view of the assembly of Fig. 14; and Fig. 16 is view of a support or guide arm according to an embodiment of the present invention and showing an aiming ring affixed thereto.
• An x-ray sensor-positioning device is generally designated by the number 10 on the attached drawings.
• Assembly 10 is preferably configured to have a conventional dental x-ray support or guide arm 12.
• An exemplary guide arm and its use with a bite block for taking a dental x-ray is shown in U.S. Pat. No. 3,473,026, which is incorporated by reference for its disclosure of a guide arm and bite block.
• guide arm 12 may be configured to be affixable to an x-ray tube collimator-positioning ring 13 in a conventional manner. Such a ring is also shown for example, in U.S. Pat. No. 3,473,026 and, US Des.
• Aiming ring 13a, Fig. 5 shows a plurality of regularly spaced, opposing steps 13b for receiving and registering a collimator (not shown).
• One set of such steps is known in the art (see for example, US Des. 237,016).
• One embodiment of the present invention employs two sets of steps 13b in order to allow registration of more than one size of collimator. Although it is preferred to "concentrically" arrange one set of steps 13b within another, sets of steps 13b can be offset if desired.
• Grooves 14 can be provided in the exterior diameter of aiming ring 13 a, such that an x-ray tubehead (not shown) can be aligned to wholly encompass whatever x-ray sensor is held by positioning device 10.
• a bite block and sensor holder assembly 11 is provided as part of device
• Bite block 20 is generally configured for use in a specific x-ray procedure.
• bite block 20 in Fig. 1 is of a configuration useful for an endo x-ray.
• Bite block 20a (Fig. T) is suited for use in taking a bitewing x-ray
• Fig. 3 shows a bite block 20b useful in taking an anterior or posterior x-ray image.
• Each bite block 20, 20a and 20b serve the same function, which is providing an area that is clamped between a patient's teeth. Given the requirements of a specific x-ray however, different shapes of bite blocks are required.
• the invention will be exemplified herein with reference to bite block 20 of Fig. 1 for purposes of this discussion (unless otherwise noted), it being understood that the invention is equally useful with bite blocks 20a, 20b or indeed, any conventional bite block shape or size without limitation.
• the sensor holder 21 There is removably attached to bite block 20 the sensor holder 21. It is likely that a dental professional will use one size and shape of sensor, be it x-ray film, CCD or phosphor plate technology for different x-rays (endo, anterior, posterior, bitewing or the like). Before the present invention, it would be standard practice for the dental professional to have a variety of bite block/sensor holders integrally formed together. According to the present invention, the sensor holder 21 and the bite block 20 are not integrally formed but rather detachably affixed. Further, the structure to attach a sensor holder 21 to a bite block 20 (which will be discussed and exemplified below), is the same no matter what the shape of the given bite block 20, 20a or 20b.
• a single sensor holder can be used to attach to a different bite block 20, 20a or 20b. This is termed a "modular" design for purposes of this discussion. It will also be appreciated that a bite block may be used with different sizes and shapes of sensor holders. Again, the invention will be exemplified herein with respect to a single sensor holder 21.
• sensor holder 21 To be detachably affixed to a bite block 20, sensor holder 21 must be provided with attachment means that correspond to attachment means carried by the bite block 20.
• bite block 20 By providing bite block 20 with the same attachment means as bite blocks having other shapes, such as bite blocks 20a and 20b, the same sensor 21 can be detachably affixed to any bite block 20, 20a or 20b, or indeed, any bite block carrying the same attachment means.
• Any attachment means between sensor holder 21 and bite block 20 is within the scope of the invention, the only criteria being that the two components be held securely with respect to each other and that they be removable. Again, this aspect is termed being "modular" in design.
• a preferred attachment means is a complex profile or tab 30 carried by sensor holder 21 and an at least partially corresponding slot 31 carried by bite block 20. It is understood that bite block 20 could easily be configured to carry complex profile 30 and that sensor holder 21 could carry slot 31 and still be within the scope of the invention. The invention will be exemplified with sensor 21 carrying
• complex profile it is meant a plurality of surfaces, such as surfaces 30a-30f (Fig. 1) each at some angle to at least one other.
• Complex profile tabs 30 and corresponding slots 31 can also be round and still fall within the scope of the definition of "complex profile”.
• Surfaces 30a-f of complex profile 30 need not necessarily be linear, but may be curvilinear, such as surface 30g, or even round.
• slot it is meant some surface such as surface 31a configured to receive at least one surface of complex profile 30 such as surface 30c.
• slot 31 is configured to receive complex profile 30 in such a manner that a plurality of surfaces 30a-f physically engage or touch slot 31 and at least some other portion of bite block 20.
• sensor 21 can be held securely to bite block 20.
• the fit between complex profile 30 and slot 31 may also be a friction fit. It will be appreciated that to secure sensor 21 to bite block 20, complex profile 30 is received within slot 31. To detach or remove sensor 21 from bite block 20, it is merely necessary to slide complex profile 30 from slot 31.
• slot 31 is shown by way of example in Fig. 3 as slot 40.
• Slot 40 is itself also of a "complex profile" substantially corresponding in shape and dimension to the shape and dimension of complex profile 30.
• complex profile 30 may be configured to have a plurality of arms 50 and 51, each carrying its own complex profile 30.
• sensor 21 has two arms 50 and 51, it being understood that any number of arms is within the scope of the invention.
• any means of detachably affixing sensor 21 to bite block 20 is within the scope of the invention. This may include bolts, screws, nuts, locking mechanisms, or the like without limitation, all of which are within the scope of the invention and the term "modular.”
• Sensor holder 21 will be configured to receive one or more sensors.
• a back support 60 and clip arms 61, 62 are employed.
• a sensor (not shown) can be secured within sensor 21.
• Fig. 4 depicts an alternative embodiment of a sensor holder 21a.
• Sensor holder 21a is configured with a back support 60 similar to back support 60 of sensor 21.
• sensor 21a is provided with upper clip arm 70, generally opposing a lower clip arm 71.
• a conventional sensor (again, not show) is supported between clip arms 70, 71 and back support 60. Otherwise, sensor 21a is substantially similar in its modular design to sensor 21.
• Fig. 6 shows an alternative embodiment of a bitewing block 80.
• Bitewing 80 is provided with a groove 81 on the bite surface 82 to help the user in positioning a sensor (not shown) held by block 80.
• Groove 81 helps to register wuch such a sensor.
• block 80 is of an overall thin design, allowing for greater patient comfort as compared to prior bite blocks.
• a guide arm 100 may be provided with a plurality of attachment sites 101a and 101b for a given sensor holder 102, 103 and 104 (Figs. 7-16).
• an attachment site 101a or 101b may include one or more pins 110 which can be physically received within a corresponding aperture 120 in a given sensor holder 102-104.
• the pins are retained within a given aperture 120 by a friction fit, which may be overcome by a user to remove the sensor holder 102-104 therefrom if desired.
• pins 110 and apertures 120 may vary, and other means of affixing a sensor holder 102-104 to a site 101a, 101b or a guide arm 100 may be employed and still be within the scope of the invention.
• a plurality of dental x-ray images may be taken with the same components. For example, anterior, posterior and bitewing images may be taken. It is an advantage to the user that all such images may be taken with the use of one guide arm 100. By using one guide arm 100, less cleaning and expense is required on behalf of the dental professional. The chances of spreading communicable diseases and germs between patients is reduced because a smaller number of components are needed for a given x-ray procedure.
• various components for different assemblies can be provided in a kit form, allowing the professional to take different x-ray images employing a single guide arm and other components.
• various components can be color-coded or provided with other indicia (not shown) to indicate which sensor holder is used for a given x-ray procedure.
• Pins 110 of a given site 101a or 101b may be so coded to indicate which sensor holder 102-104 is used for the desired procedure.
• a guide ring 130 is provided with a plurality of journals 140 for receiving guide arm 100 therein in preferably, a friction fit manner.
• Journals 140 may also be coded such as by color or other indicia (not shown) in order to indicate which journal is used for a given x-ray procedure, as with the other such coded components discussed hereinabove.

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• Heart & Thoracic Surgery (AREA)
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• Biomedical Technology (AREA)
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• Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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• General Physics & Mathematics (AREA)
• Apparatus For Radiation Diagnosis (AREA)
• Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

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• 2009
  • 2009-08-27 EP EP09789230A patent/EP2339967A1/de not_active Withdrawn
  • 2009-08-27 JP JP2011525003A patent/JP2012501212A/ja active Pending
  • 2009-08-27 WO PCT/US2009/004891 patent/WO2010024917A1/en active Application Filing
  • 2009-08-27 CA CA2735472A patent/CA2735472C/en active Active

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