GB2474336A - Endoscopic instrument with automatic use detecting power control - Google Patents

Endoscopic instrument with automatic use detecting power control Download PDF

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Publication number
GB2474336A
GB2474336A GB201016344A GB201016344A GB2474336A GB 2474336 A GB2474336 A GB 2474336A GB 201016344 A GB201016344 A GB 201016344A GB 201016344 A GB201016344 A GB 201016344A GB 2474336 A GB2474336 A GB 2474336A
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GB
United Kingdom
Prior art keywords
use
instrument
non
component
endoscopic instrument
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB201016344A
Other versions
GB2474336B (en
GB201016344D0 (en
Inventor
Martin Dolt
Hubert Vollinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wolf Richard GmbH
Original Assignee
Wolf Richard GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DE200910043652 priority Critical patent/DE102009043652A1/en
Application filed by Wolf Richard GmbH filed Critical Wolf Richard GmbH
Priority to GB201016344A priority patent/GB2474336B/en
Publication of GB201016344D0 publication Critical patent/GB201016344D0/en
Publication of GB2474336A publication Critical patent/GB2474336A/en
Application granted granted Critical
Publication of GB2474336B publication Critical patent/GB2474336B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00002Operational features of endoscopes
    • A61B1/00025Operational features of endoscopes characterised by power management
    • A61B1/00036Means for power saving, e.g. sleeping mode
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/04Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
    • A61B1/045Control therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/12Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/12Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements
    • A61B1/128Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements provided with means for regulating temperature
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/267Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the respiratory tract, e.g. laryngoscopes, bronchoscopes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/06Devices, other than using radiation, for detecting or locating foreign bodies ; determining position of probes within or on the body of the patient
    • A61B5/065Determining position of the probe employing exclusively positioning means located on or in the probe, e.g. using position sensors arranged on the probe

Abstract

The endoscopic instrument (1) has at least one component that heats up during the operation of the instrument and is equipped with means for automatically registering the use or non-use state of the instrument (1). It has a control (9), which actuates the at least one component that heats up during the operation of the instrument (1) in a power-reduced fashion or switches off said at least one component during the non-use of the instrument, and which actuates the component that heats up during the operation of the instrument (1) with the power provided for the use or switches on said component during the use of the instrument. The component that heats up may be a CCD or light source of an endoscope. The non-use may be detected by a position sensor (7), the sensor may be a gravitational sensor or an accelerometer.

Description

Endoscoiic instrument The invention relates to an endoscopic instrument with at least one component that heats up during the operation of the instrument.

Endoscopic instruments are becoming ever more powerful and smaller, but the heat generation within the instrument also increases as the power density rises, be it directly due to the electrical/electronic components that heat up because of electricity flowing through them, such as, for example, the CCD sensor for recording the image in a video endoscope, or else due to optical components as a result of absorption, coupling or reflection losses of optical radiation. Dissipating this lost heat is complicated; measures that often cannot be used or can only be used with insufficient effect due to the limited space are required for dissipating heat. This also holds true for fans and blowers, which are typically only used in the stationary part of such an endoscopic system and moreover generate noise, which is undesirable. However, there increasingly are problems as the temperature rises in the endoscope. In addition to the increased temperature being detrimental to the electronic image acquisition and processing as a result of a significant increase in noise, temperatures can be generated on the external sides during prolonged use that cause discomfort or pain in the case of, for example, hand-held components.

In order to avoid this, the prior art already discloses a provision for switching off or reducing the power in endoscopic systems in order to reduce the additional heat load. This typically is brought via switches on the control unit, i.e. it always requires manual intervention by the therapist, distracting him from their actual goal of diagnosis or treatment.

Moreover, the prior art discloses to automatically conduct such a reduction in power or automated switching off when the instrument is put info the holder provided therefor, said holder being equipped with a micro-switch or a magnetic switch for carrying out this function. This also assumes that the instrument is set aside by the treating person as intended.

However, what often happens in practice is that the instrument is only set aside on the patient, on the table or the like during an intervention so that it can be quickly picked up again or because an ergonomic workplace design does not allow the provision of an appropriate holding device.

Against this backdrop, it is the object of the invention to develop an endoscopic instrument of the aforementioned type such that the heat development within the instrument can be reduced, where possible without having a negative impact on its capability.

According to the invention, this object is achieved by the features specified in claim 1. Advantageous embodiments of the invention emerge from the dependent claims, the subsequent description and the drawing.

The endoscopic instrument according to the invention, which contains one or more components that heat up during the operation of the instrument, is provided with means for automatically registering the use or non-use of the instrument and has a control, which actuates the at least one component that heats up during the operation of the instrument in a power-reduced fashion or switches off said at least one component when the non-use of the instrument is registered, and which actuates the component that heats up during the operation of the instrument with the power provided for the use or switches on said component when the use of the instrument is registered.

Hence, it is a basic idea of the present invention to determine, by automatically registering the state of the instrument, when said instrument is actually in use or when it is in non-use, i.e. only set aside or on the way to being used. For this, according to the invention, means for automatically registering the use or non-use of the instrument are provided. Here it typically suffices to register one of the two use states, i.e. to register whether the instrument is in use or in non-use. The actuating or switching function for controlling the at least one component that heats up during the operation of the instrument can suitably be effected both when the time of non-use and the time of use is registered. In practice, the assumption can be made that whenever the instrument is not in use, it is in a state of non-use, and vice versa; the control should be designed appropriately.

Depending on instrument and application, there are various means available for registering use or non-use. In a multiplicity of instruments, it should be possible to register the use or non-use by a position sensor within the instrument. In this context, reference is made in a purely exemplary fashion to instruments for a laryngoscopic application, i.e. more particularly to laryngoscopes for diagnostic purposes, which are typically applied when the patient is seated. The shaft of the instrument is typically aligned substantially horizontally during use. If a sufficiently large angle-tolerance range is fixed, merely registering the position of the instrument can determine whether or not the instrument is being used as intended. Then, in the case of non-use, when the instrument has just been set aside or is not inserted, the control can be used to switch off or at least reduce the power of one or more components of the instrument that heat up during the operation of the instrument, so that the heat loss is reduced and hence the instrument is heated less in times of non-use.

Depending on the application, a two-dimensional (2D) position sensor already suffices for this, but the use of a three-dimensional (3D) position sensor is particularly advantageous, which three-dimensional position sensor can also be constructed from two two-dimensional (2D) position sensors arranged at 900 to one another. The three-dimensional (3D) position sensor naturally allows registering the use or non-use even in those instruments that can be used in positional orientations with greater variance.

Alternatively, or if need be additionally, an accelerometer arranged within the instrument can also be used to register the use or non-use of the instrument. By using a suitable electronic evaluation, this accelerometer can be used to determine whether the instrument is situated in the hand of a therapist, or on a table or a body part of the patient. The accelerometer can be used to register the typical movements of the therapist in the case of manual handling and distinguish these from the instrument resting on an object or from the movements when the instrument is situated on a body part of the patient and hence use or non-use can be determined.

An electronic evaluation arrangement is typically provided for evaluating the sensor signal, said evaluation arrangement being signal-connected to the sensor, or the sensors if a plurality thereof are provided, It is particularly advantageous for this evaluation arrangement to form part of the control, which then also actuates the power or switches on or off the components that heat up during the operation of the instrument according to the use or non-use being registered.

Such an evaluation arrangement advantageously has an input device that can be used to enter data, which data define the use or non-use situations and fix tolerances in respect thereof. When using a position sensor as described at the outset, positional data can typically be entered into the evaluation arrangement that defines the use or non-use position.

The inputs can for example be specified as angular deviations from predefined spatial axes and can expediently be adjusted individually by the user, at least within bounds.

In particular, if at least one accelerometer is used, at least one filter, or if need be also a plurality of filters are provided in the evaluation arrangement according to one advantageous development of the invention in order to differentiate between a use and a non-use movement.

Modern endoscopic instruments, which have electronic image acquisition and can be connected to an external illumination source via optical fibers, typically have a stationary control unit in addition to the actual endoscopic instrument, which control unit is electrically connected to said endoscopic instrument and feeds the latter. According to a further formation of the invention, the control, which advantageously also comprises the evaluation arrangement and undertakes the power actuation of the component or components in the instrument that heat up during the operation of the instrument, is part of this control unit used to feed the instrument at least with energy, typically in the form of electrical energy and/or optical energy in the form of illumination light.

According to an advantageous development of the invention, in which the component that heats up during the operation of the instrument arranged within the endoscopic instrument is an optical component in the path of the illumination light, the control does not influence the optical system but influences the control of the electrical power of the illumination source, with the latter being actuated with less power or even switched off in the case of non-use.

The invention is hereinafter explained in more detail by way of an embodiment example illustrated in the drawing. There are shown in: Figure 1 in a much-simplified schematic illustration a laryngoscope in a use position, with a position sensor arranged therein, Figure 2 the laryngoscope according to Figure 1 in a non-use position and Figure 3 the laryngoscope according to Figure 1 in a further non-use position.

The laryngoscope illustrated by way of the figures is one in which the image is acquired by means of an image sensor (not illustrated) arranged in a hand grip portion 2, is subsequently processed electronically and transmitted via an transmission line 3 to a stationary control unit 4 and from there to a monitor. An illumination source is also arranged in the control unit 4, which guides illumination light via waveguides situated in the transmission line 3 into the shaft 5 of the laryngoscope 1, which illumination light emerges there from the distal end and illuminates e.g. the vocal chords to be observed.

Even though the illustrated laryngoscope 1 can be used for different examination purposes, it basically is always used in the position illustrated schematically in Figure 1 with a horizontally aligned shaft 5, which position results during the insertion of the instrument if the patient sifting in front of the therapist has an open mouth. In the process, certain angular deviations from the illustrated horizontal position are possible, for example inclines of 30° obliquely upward or obliquely downward. The use position of the instrument 1 is defined within this spatial position, which is specified in an exemplary fashion in Figure 1 by the angle 6. If can be assumed that there is non-use in all positions deviating therefrom, i.e. an intended use is not possible and thus components that heat up during the operation of the instrument may also be switched off or partly switched off.

In order to register this, a 3D gravitational sensor 7 is provided in the hand grip portion 2 of the laryngoscope, the output signal of which sensor is fed via the transmission line 3 to the control unit 4 and there to an evaluation unit 8 which determines whether the laryngoscope 1 with its shaft 5 is in the angular range specified by 6. If this is the case, the downstream control 9 receives a signal that characterizes the use state, as a result of which the control 9 releases all illumination, recording and other functions of the laryngoscopel in the control unit 4.

By contrast, if the laryngoscope 1 is stored in a holder 10 in the case of non-use, as illustrated in Figure 2, the shaft 5 points vertically downward and the hand grip portion 2 adjoins the former in the upward direction. In this position, the laryngoscope is clearly outside of the angular range 6 illustrated in Figure 1, which angular range permits pivot movements around the center of gravity or any other fixed point of the instrument by plus/minus 300 from the horizontal in each case. The positional information is transmitted by means of the sensor 7 to the evaluation unit 8, which identifies this positional state as a non-use state and emits an appropriate signal to the control 9, which thereupon switches off the illumination within the control unit 4 or reduces it to a minimum, and which moreover switches off the image sensor situated within the laryngoscope 1. This is correspondingly brought about in the position illustrated in Figure 3, in which the laryngoscope has been set aside on a planar surface and the shaft and hand grip portion 2 are situated in approximately the same horizontal plane. This position is transmitted by the sensor 7 to the evaluation unit 8, which identifies this position as a non-use state and, as described with the aid of Figure 2, actuates the control 9 with a signal corresponding to the non-use state.

Only once the user transfers the laryngoscope 1 into a position illustrated in Figure 1, in which the hand grip portion 2 is arranged such that the transmission line 3 basically goes off downward and the shaft 5 has a substantially horizontal position with a tolerance angular range 6, does the evaluation unit 8 signal the use-state as a result of the sensor signal, whereby the control 9 activates the illumination situated in the control unit 4 and switches on the image recording unit.

It is understood that this applies to the present exemplary embodiment and the specific application of a laryngoscope, and that the positional orientation should be modified in accordance with the usage purpose in other endoscopic instruments in order to be able to determine in the evaluation unit 8, with the aid of the positional orientation, whether the instrument 1 is in a use or non-use position.

Claims (10)

  1. Claims 1. An endoscopic instrument (1) with at least one component that heats up during the operation of the instrument, with means (7, 8) for automatically registering the use or non-use of the instrument (1), and with a control (9), which actuates the at least one component that heats up during the operation of the instrument in a power-reduced fashion or switches off said at least one component during the non-use of the instrument (1), and which actuates the at least one component that heats up during the operation of the instrument with the power provided for the use or switches on said at least one component during the use of the instrument (1).
  2. 2. The endoscopic instrument according to claim 1, in which the means for registering the use or non-use have a position sensor (7) within the instrument (1).
  3. 3. The endoscopic instrument according to one of the preceding claims, in which the position sensor is a 3D gravitational sensor (7).
  4. 4. The endoscopic instrument according to one of the preceding claims, in which the means for registering the use or non-use have an accelerometer within the instrument.
  5. 5. The endoscopic instrument according to one of the preceding claims, in which the sensor (7) is signal-connected to an evaluation arrangement (8), which is signal-connected to the control (9) and preferably forms part of the control (9).
  6. 6. The endoscopic instrument according to one of the preceding claims, in which positional data can be entered into the evaluation arrangement (8), which data define the use or non-use position.
  7. 7. The endoscopic instrument according to one of the preceding claims, in which the evaluation arrangement has filters for differentiating between a use and a non-use movement.
  8. 8. The endoscopic instrument according to one of the preceding claims, in which the control (9) is part of a stationary control unit (4) that feeds the instrument (1) at least with energy.
  9. 9. The endoscopic instrument according to one of the preceding claims, in which the component that heats up during the operation of the instrument is an optical component in the illumination light path and in which the electrical power of the illumination source is controlled in its power or switched off.
  10. 10. An endoscopic instrument substantially as hereinbefore described with reference to, and/or as shown in, the accompanying drawings.
GB201016344A 2009-09-29 2010-09-29 Endoscopic instrument Active GB2474336B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE200910043652 DE102009043652A1 (en) 2009-09-29 2009-09-29 Endoscopic instrument
GB201016344A GB2474336B (en) 2009-09-29 2010-09-29 Endoscopic instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB201016344A GB2474336B (en) 2009-09-29 2010-09-29 Endoscopic instrument

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GB201016344D0 GB201016344D0 (en) 2010-11-10
GB2474336A true GB2474336A (en) 2011-04-13
GB2474336B GB2474336B (en) 2011-11-16

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994003101A1 (en) * 1992-07-28 1994-02-17 William Lacey Laryngoscope having removable blade assembly containing lamp
WO2003082075A2 (en) * 2002-03-22 2003-10-09 Ethicon Endo-Surgery, Inc. An integrated visualization system
US20040034277A1 (en) * 2002-08-13 2004-02-19 Inner Vision Imaging, L.L.C. Endoscope assembly
EP1433413A2 (en) * 2001-03-14 2004-06-30 Techmin Pty Ltd Laryngoscope
WO2006056976A2 (en) * 2004-11-23 2006-06-01 Truphatek International Ltd Handheld penknife-like laryngoscope
JP2009142440A (en) * 2007-12-13 2009-07-02 Fujifilm Corp Endoscope apparatus
WO2009130666A1 (en) * 2008-04-21 2009-10-29 Elges Ernst Lehnert Ges.M.B.H Laryngoscope

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994003101A1 (en) * 1992-07-28 1994-02-17 William Lacey Laryngoscope having removable blade assembly containing lamp
EP1433413A2 (en) * 2001-03-14 2004-06-30 Techmin Pty Ltd Laryngoscope
WO2003082075A2 (en) * 2002-03-22 2003-10-09 Ethicon Endo-Surgery, Inc. An integrated visualization system
US20040034277A1 (en) * 2002-08-13 2004-02-19 Inner Vision Imaging, L.L.C. Endoscope assembly
WO2006056976A2 (en) * 2004-11-23 2006-06-01 Truphatek International Ltd Handheld penknife-like laryngoscope
JP2009142440A (en) * 2007-12-13 2009-07-02 Fujifilm Corp Endoscope apparatus
WO2009130666A1 (en) * 2008-04-21 2009-10-29 Elges Ernst Lehnert Ges.M.B.H Laryngoscope

Also Published As

Publication number Publication date
GB201016344D0 (en) 2010-11-10
GB2474336B (en) 2011-11-16

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