Source: http://www.google.com/patents/US20020188177?ie=ISO-8859-1&dq=7,172,682
Timestamp: 2014-07-13 10:34:48
Document Index: 712883486

Matched Legal Cases: ['art 3', 'art 3', 'arts 12', 'art 3', 'art 3', 'art 103', 'art 103', 'art 103', 'art 103', 'arts 112', 'art 103', 'art 101']

Patent US20020188177 - Distal endoscope part having light emitting source such as light emitting ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign in<nobr>Advanced Patent Search</nobr>PatentsA substrate having a plurality of light emitting diodes united therewith lies on a plane containing the longitudinal axis of an insertion unit of an endoscope and its neighborhood. Likewise, part of a first objective surface lies on the plane containing the longitudinal axis of the insertion unit of...http://www.google.com/patents/US20020188177?utm_source=gb-gplus-sharePatent US20020188177 - Distal endoscope part having light emitting source such as light emitting diodes as illuminating meansAdvanced Patent SearchPublication numberUS20020188177 A1Publication typeApplicationApplication numberUS 10/213,748Publication dateDec 12, 2002Filing dateAug 5, 2002Priority dateSep 8, 1998Also published asUS6488619, US6656112Publication number10213748, 213748, US 2002/0188177 A1, US 2002/188177 A1, US 20020188177 A1, US 20020188177A1, US 2002188177 A1, US 2002188177A1, US-A1-20020188177, US-A1-2002188177, US2002/0188177A1, US2002/188177A1, US20020188177 A1, US20020188177A1, US2002188177 A1, US2002188177A1InventorsHirofumi MiyanagaOriginal AssigneeOlympus Optical Co., Ltd.Export CitationBiBTeX, EndNote, RefManReferenced by (10), Classifications (21), Legal Events (2) External Links: USPTO, USPTO Assignment, EspacenetDistal endoscope part having light emitting source such as light emitting diodes as illuminating meansUS 20020188177 A1Abstract A substrate having a plurality of light emitting diodes united therewith lies on a plane containing the longitudinal axis of an insertion unit of an endoscope and its neighborhood. Likewise, part of a first objective surface lies on the plane containing the longitudinal axis of the insertion unit of the endoscope and its neighborhood. As long as the diameter of the insertion unit remains unchanged, the plane containing the longitudinal axis of the insertion unit of the endoscope and its neighborhood provides the largest area for the light emitting diodes. The light emitting diode sub-assembly is therefore placed on the plane, whereby the outer diameter of a distal endoscope part can be made as small as possible. Images(16) Claims(21)
BRIEF DESCRIPTION OF THE DRAWINGS [0016]FIG. 1 to FIG. 10 relate to the first embodiment of the present invention; [0017]FIG. 1 shows the configuration of a side viewing endoscope; [0018]FIG. 2 is a longitudinal sectional view showing the structure of a distal endoscope part shown in FIG. 1; [0019]FIG. 3 is a cross sectional view of the A-A plane of the distal endoscope part shown in FIG. 2; [0020]FIG. 4 is a top view of the distal endoscope part shown in FIG. 2; [0021]FIG. 5 is a longitudinal sectional view showing the BB plane of the distal endoscope part shown in FIG. 4; [0022]FIG. 6 is a cross sectional view showing the C-C plane of the distal endoscope part shown in FIG. 2; [0023]FIG. 7 is a first explanatory diagram for explaining a first variant of the distal endoscope part shown in FIG. 1; [0024]FIG. 8 is a second explanatory diagram for explaining the first variant of the distal endoscope part shown in FIG. 1; [0025]FIG. 9 is a first explanatory diagram for explaining a second variant of the distal endoscope part shown in FIG. 1; [0026]FIG. 10 is a second explanatory diagram for explaining a second variant of the distal endoscope part shown in FIG. 1; [0027]FIG. 11 to FIG. 21 relate to the second embodiment of the present invention; [0028]FIG. 11 shows the configuration of a side viewing endoscope; [0029]FIG. 12 is a longitudinal sectional view showing the structure of the distal endoscope part shown in FIG. 11; [0030]FIG. 13 is a cross sectional view showing the A-A plane of the distal endoscope part shown in FIG. 12; [0031]FIG. 14 is a top view of the distal endoscope part shown in FIG. 12; [0032]FIG. 15 is a longitudinal sectional view showing the B-B plane of the distal endoscope part shown in FIG. 12; [0033]FIG. 16 is a cross sectional view showing the C-C plane of the distal endoscope part shown in FIG. 12; [0034]FIG. 17 is a cross sectional view showing the D-D plane of the distal endoscope part shown in FIG. 12; [0035]FIG. 18 is a cross sectional view showing the E-E plane of the distal endoscope part shown in FIG. 12; [0036]FIG. 19 is a longitudinal sectional view showing the structure of a control unit included in the distal endoscope part shown in FIG. 11; [0037]FIG. 20 shows the structure of a variant of the control unit shown in FIG. 19; [0038]FIG. 21 shows the structure of a light emitting diode included in the distal endoscope part shown in FIG. 14; [0039]FIG. 22 to FIG. 24 relate to the third embodiment of the present invention; [0040]FIG. 22 is a longitudinal sectional view showing the structure of a distal endoscope part; [0041]FIG. 23 is a cross sectional view showing the F-F plane of the distal endoscope part shown in FIG. 22; and [0042]FIG. 24 is a cross sectional view showing the G-G plane of the distal endoscope part shown in FIG. 22. DESCRIPTION OF THE PREFERRED EMBODIMENTS [0043] First Embodiment [0044] As shown in FIG. 1, a side viewing endoscope 1 has an insertion unit 2 to be inserted into an intracorporeal cavity. A distal endoscope part (hereinafter referred to as a distal part) in accordance with the present invention attached to the distal end of the insertion unit 2 includes an imaging means and light emitting diodes serving as an illuminating means. A control unit attached to the proximal end of the insertion unit 2 has a light level adjustment knob 5 used to adjust an amount of light emitted from the light emitting diodes in the distal part 3. [0045] An optical image of an object illuminated the light emitting diodes is projected on an imaging unit included in the distal part 3, and converted into an electric signal. The electric signal is sent to a camera control unit 7 over a camera control cable 6. Image data represented by the electric signal is processed by the camera control unit 7 that is powered by an AC adapter 8. An image signal produced by the camera control unit 7 is transferred to a monitor 10 over a monitor cable 9. An endoscopic image is then displayed. [0046] As shown in FIG. 2 and FIG. 3, an imaging unit 13 for converting an optical signal into an electric signal is fixed to a body 15 with a holder 14 between them by means of screws 16. The imaging unit 13 consists of a solid-state imaging device 11 and electronic parts 12. [0047] An objective sub-assembly 17 for converging an optical image at the solid-state imaging device 11 is placed ahead of the solid-state imaging device 11. The optical image represents an object located in a direction of side viewing (at a right angle with respect to the longitudinal direction of the insertion unit 2). [0048] A signal cable 18 over which a signal is transferred from the camera control unit 7 to the imaging unit 13, and power cables 20 over which power is supplied to the light emitting diodes 19 serving as an illuminating means are passed through the insertion unit 2. [0049] As shown in FIG. 4 to FIG. 6, the light emitting diodes 19 serving as an illuminating means for irradiating illumination light in the direction of side viewing (at a right angle with respect to the longitudinal direction of the insertion unit 2) are soldered to a substrate 21. The power cables 20 are also soldered to the substrate 21. The substrate 21 having the light emitting diodes and power cables united therewith is fixed to a body 22 by means of screws A 23. [0050] The substrate 21 having the plurality of light emitting diodes 19 united therewith lies on a plane containing the longitudinal axis 25 of the insertion unit and its neighborhood. [0051] Likewise, part of a first objective surface 30 lies on the plane containing the longitudinal axis 25 of the insertion unit of the endoscope and its neighborhood. As long as the outer diameter of the endoscope remains unchanged, the plane containing the longitudinal axis 25 of the insertion unit and its neighborhood provides the largest area for the light emitting diodes. If the light emitting diode sub-assembly 19 is placed on the plane, the outer diameter of the distal part 3 can be made as small as possible. [0052] The light emitting diodes 19 are fixed to the body 22 together with the substrate 21. Thereafter, a substantially transparent filler 24 is injected to fully cover the surroundings of the light emitting diodes 19 and the light emitting surfaces thereof. Even the tops of the light emitting diodes 19 are covered with the filler 24, whereby the light emitting diodes 19 are not only protected to be blocked from outside but also left watertight. [0053] The light emitting diodes 19 on the substrate 21 may be, as shown in FIG. 7 and FIG. 8, mounted in pairs. In this case, the sub-assembly of the light emitting diodes mounted on the substrate 21 is attached to a distal mechanical member 32. Paired light emitting diodes 19 can therefore be located mutually as closely as possible. Consequently, the width 33 of the substrate can be decreased and the outer diameter of the distal part can be minimized. [0054] Moreover, as shown in FIG. 9 and FIG. 10, a package for each light emitting diode 19 may be shaped like a sector in order to improve the density of mounted components and the efficiency in emitting light. [0055] As mentioned above, according to the present embodiment, the substrate 21 having the plurality of light emitting diodes 19 united therewith is placed on the plane containing the longitudinal axis 25 of the insertion unit and its neighborhood. Part of the first objective surface 30 is also placed on the plane containing the longitudinal axis 25 of the insertion unit and its neighborhood. As long as the outer diameter of the endoscope remains unchanged, the plane containing the longitudinal axis 25 of the insertion unit and its neighborhood can provide the largest area for the light emitting diodes. For this reason, the outer diameter of the distal part 3 can be minimized. [0056] In other words, the light emitting diode sub-assembly made by mounting the plurality of light emitting diodes on the substrate is placed on the plane containing the longitudinal axis 25 of the insertion unit and its neighborhood. Therefore, the density of mounted components can be improved and the outer diameter of the distal endoscope part can be minimized. [0057] Moreover, the plurality of light emitting diodes can be assembled at a time. This leads to easy assembling. [0058] Second Embodiment [0059] As shown in FIG. 11, a side viewing endoscope 101 has an insertion unit 102 that is inserted into an intracorporeal cavity. A distal endoscope part 103 (hereinafter referred to as a distal part) in accordance with the present embodiment attached to the distal end of the insertion unit 102 has an imaging means and light emitting diodes serving as an illuminating means. A control unit 104 attached to the proximal end of the insertion unit 102 has a light level adjustment knob 105 used to adjust an amount of light emitted from the light emitting diodes in the distal part 103. [0060] An optical image of an object illuminated by the light emitting diodes is projected on an imaging unit in the distal part 103, and converted into an electric signal. The electric signal is sent to a camera control unit 107 over a camera control cable 106. Image data represented by the electric signal is processed by the camera control unit 107 that is powered by an AC adapter 108. An image signal produced by the camera control unit 107 is transferred to a monitor 110 over a monitor cable 109. Consequently, an endoscopic image is displayed. [0061] As shown in FIG. 12 and FIG. 13, an imaging unit 113 for converting an optical signal to an electric signal is fixed to a body 115 in the distal part 103 with a holder 114 between them by means of screws C 116. The imaging unit 113 consists of a solid-state imaging device 111 and electronic parts 112. [0062] Moreover, an objective sub-assembly 117 for converging an optical image at the solid-state imaging device 111 is located ahead of the solid-state imaging device 111. The optical image represents an object located in a direction of side viewing (at a right angle with respect to the longitudinal direction of the insertion unit 2). [0063] A signal cable 118 over which a signal is transferred from the camera control unit 107 to the imaging unit 113, and power cables 120 over which power is supplied to the light emitting diodes 119 are passed through the insertion unit 102. The light emitting diodes 119 serve as an illuminating means and will be described later. [0064] As shown in FIG. 14 and FIG. 15, the light emitting diodes 119 serving as an illuminating means for irradiating illumination light in the direction of side viewing (at a right angle with respect to the longitudinal direction of the insertion unit 102) are soldered to a substrate 121. The power cables 120 are also soldered to the substrate 121. The substrate 121 having the light emitting diodes and power cables united therewith is fixed to a body 122 by means of screws A 123. [0065] The light emitting diodes 119 are fixed to the body 122 together with the substrate 121. Thereafter, a substantially transparent filler 124 is injected to fully cover the surroundings of the light emitting diodes 119 including the light emitting surfaces thereof. Even the tops of the light emitting diodes 119 are covered with the filler 124, whereby the light emitting diodes 119 are not only protected to be blocked from outside but also left watertight. [0066] As shown in FIG. 16 and FIG. 17, the body 115 and body 122 are secured by a screw B 125. Part of a lens frame 127 mounted on the outer circumference of an objective 126 located behind a prism and included in the objective sub-assembly 117 is notched. This is because the dimension between the objective 126 and the body 115 that is a mate member is not large enough to tolerate the thickness of the lens frame 127. [0067] Referring back to FIG. 12, a cover A 128 screwed to the body 115 is fixed to the outer circumference of the imaging unit 113. A cover B 129 is screwed to the cover A 128. The outer circumference of the imaging unit 113 is thus covered by two covers of the cover A 128 and cover B 129. This is intended to reinforce the fixation of the imaging unit 113 to the body 115 after the imaging unit is screwed firmly to the body 115. An adhesive 130 is therefore injected into a space created by the cover A 128, body 115, and imaging unit 113. Since two covers are used in combination, a desired position can be looked at accurately during work. The adhesive 130 can be injected easily. [0068] Moreover, as shown in FIG. 18, the signal cable 118 and power cables 120 are sandwiched between the cover B 129 and a fixture 131. The tensile strengths in the axial direction of the cables are thus improved. The fixture 131 is fixed to the cover B 129 by screws D 132. [0069]FIG. 19 shows the system control unit 103 shown in FIG. 11. The light level adjustment knob 105 is located on a back end panel 133 of the control unit 104. The light level adjustment knob 105 is structured not to jut out beyond the outer circumference 134 of the control unit 104. Even if a worker nonchalantly places the endoscope at a site, the switches including the light level adjustment knob 105 will hardly be flawed. [0070] Moreover, the light level adjustment knob 105 may be, as shown in FIG. 20, located on the circumference of the control unit 104. In this case, the light level adjustment knob 105 will not jut out beyond the outer circumference 134. [0071]FIG. 21 shows the outline of a light emitting diode 119 employed in the second embodiment. The light emitting diode 119 is made by putting a chip (light emitting device) 161 in a center dent of a ceramic package 160 and covering the chip portion with a silicon resin 162. [0072] As mentioned above, in this embodiment, the light emitting diodes 119 are fixed to the body 122 together with the substrate 121. Thereafter, the substantially transparent filler 124 is injected to fully cover the surroundings of the light emitting diodes 119 including the light emitting surfaces thereof. Since the tops of the light emitting diodes 119 are covered with the filler 124, it is unnecessary to place a transparent member in front of the light emitting diodes 119 and to increase the outer diameter of the distal part. Moreover, the light emitting diodes 119 can be not only protected to be blocked from outside but also left watertight. [0073] The surroundings of the light emitting diodes and the front light emitting surfaces thereof are covered with the filler in order to realize a watertight structure. This makes it unnecessary to ensure a thickness large enough to support a transparent member used to attain a watertight state in the related art. The outer diameter of the distal part can therefore be made smaller. Moreover, the employment of the filler requires a smaller number of members than the employment of the transparent member such as a glass. Besides, the price of the distal part can be lowered. [0074] Third Embodiment [0075] The third embodiment is substantially identical to the second embodiment. Only a difference will be described. The same reference numerals will be assigned to identical components. [0076] As shown in FIG. 22 to FIG. 24, a distal endoscope part 103 a in accordance with the present embodiment is a distal part for a direct viewing endoscope. An insertion unit including the distal endoscope part 101 a consists of an optical adapter 140 and an endoscope body 141. The optical adapter 140 is mounted on the outer circumference of the endoscope body 141 and secured to a setscrew 142, which can rotate only in a circumferential direction, by means of attaching screws 143. [0077] A plurality of light emitting diodes 119 is placed on the circumference of an objective 144 in the optical adapter 140 with the objective 144 as a center (see FIG. 23). The light emitting diodes 119 are mounted on substrates 145 together with contact pins 146. The substrates 145 are stowed in an adapter body 147 with the light emitting diodes and contact pins united therewith. Thereafter, a substantially transparent filler 148 is injected to fully cover the light emitting diodes 119 including even the tops thereof. The light emitting diodes 119 are thus left watertight. [0078] Power is supplied from the endoscope body 141 to the light emitting diodes 119 in the optical adapter 140 over power cables 120. Specifically, power is delivered to the contact pins 146 in the optical adapter 140 through contact receptacles 149 over the power cables 120. The power is then supplied to the light emitting diodes 119 via the substrates 145. A power supply member shall be composed of the contact receptacles 149 and contact pins 146. The power supply member is isolated from the metallic member of the body 150 by insulators A 151, insulators B 152, and insulating tubes 153, and secured by screws 154 (see FIG. 24). [0079] Even in this embodiment, the filler 148 is injected to fully cover the light emitting diodes 119 including the tops thereof. The light emitting diodes 119 are thus left watertight. The same advantage as that provided by the second embodiment can therefore be provided. [0080] In the present invention, it is apparent that a wide range of different embodiments can be constructed based on the invention without a departure from the spirit and scope of the invention. This invention will be limited by the appended claims but not restricted by any specific embodiments. Referenced byCiting PatentFiling datePublication dateApplicantTitleUS6962565 *Dec 12, 2002Nov 8, 2005Pentax CorporationExcitation light illuminating probe, video endoscope system, and video endoscope for fluorescence observationUS7749160 *Dec 26, 2006Jul 6, 2010Olympus CorporationEndoscope deviceUS7766819 *Nov 30, 2005Aug 3, 2010Olympus CorporationEndoscope and endoscope tip forming memberUS7909756Jan 25, 2006Mar 22, 2011Karl Storz Imaging, Inc.Illumination system for variable direction of view instrumentsUS7922654 *Aug 9, 2004Apr 12, 2011Boston Scientific Scimed, Inc.Fiber optic imaging catheterUS20110046447 *Oct 13, 2010Feb 24, 2011Hans David HoegIllumination System For Variable Direction Of View InstrumentsEP1685791A1 *Jan 26, 2006Aug 2, 2006Karl Storz Development Corp.Illumination system for variable direction of view instrumentsEP1790276A1 *Jul 25, 2005May 30, 2007Olympus CorporationEndoscope, and production method and repair method for the sameEP1847212A1 *Apr 21, 2006Oct 24, 2007Fondazione Torino WirelessEndoscope with a digital view systemEP2218391A1 *Jul 5, 2005Aug 18, 2010Olympus Medical Systems Corp.Electronic endoscope* Cited by examinerClassifications U.S. Classification600/179, 600/129International ClassificationA61B1/05, A61B1/06Cooperative ClassificationA61B1/00096, A61B1/0615, A61B1/0008, A61B1/0684, A61B1/00101, A61B1/0676, A61B1/05, A61B1/00177European ClassificationA61B1/00E4H7, A61B1/06R6, A61B1/00E4H, A61B1/00E4H9, A61B1/06D, A61B1/00S4B, A61B1/06R4, A61B1/05, A61B1/06Legal EventsDateCodeEventDescriptionMay 4, 2011FPAYFee paymentYear of fee payment: 8May 14, 2007FPAYFee paymentYear of fee payment: 4RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google