CN103006167A - Fluid pipeline switching device and endoscope - Google Patents
Fluid pipeline switching device and endoscope Download PDFInfo
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- CN103006167A CN103006167A CN2012103110485A CN201210311048A CN103006167A CN 103006167 A CN103006167 A CN 103006167A CN 2012103110485 A CN2012103110485 A CN 2012103110485A CN 201210311048 A CN201210311048 A CN 201210311048A CN 103006167 A CN103006167 A CN 103006167A
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Abstract
The present invention provides a fluid pipeline switching device. In the fluid pipeline switching device for an endoscope, when a piston is detached, contact between the filter and connecting holes formed on an operating cylinder can be prevented, thereby preventing filler damage. The fluid pipeline switching device is provided with the following components: a press button which is provided with a piston and a plurality of sealing components; the operating cylinder which gradually necks in an insertion direction of the piston and is provided with the connecting holes connected with the fluid pipeline; and a limiting member which is used for limiting the lower position of the piston. The plurality of sealing components gradually thins to the front end and separates the space in the operating cylinder along the axis direction. The diameter of the sealing component is smaller than the inner diameter of the upper segment of the segment of the piston, which is in slidable contact with the sealing component. Furthermore the positions of the connecting holes for connecting each fluid pipeline with the operating cylinder are closer to the front end than the lower-end position of the sealing components which slidably contact with corresponding components, thereby settling the task of the invention.
Description
Technical field
The present invention relates to the fluid circuit switching device shifter of the water button of supplying gas/send etc. for endoscope and the endoscope that has adopted this fluid circuit switching device shifter.
Background technology
As everyone knows, endoscope is used in the middle of the diagnosis of carrying out internal organs in the organism that inserts human body etc. or the inspection etc.
Endoscope basically by the insertion section of inserting human body, carry out the operation of insertion section or the operating portion of the operation of the endoscope of the water of supplying gas/send etc., with supply gas mechanism, water-absorption mechanism, the adapter (LG (Light Guide) adapter) that suction pump etc. connect, and formations such as general flexible cord (LG bending section) that adapter, operating portion and insertion section are connected.
In addition, the insertion section has: the leading section that is incorporated with image unit with ccd sensor or illuminating lens etc.; The bending section of the strip of base end side; Be arranged between leading section and the bending section and according to the operation in the operating portion of endoscope and come crooked turning part.
As previously mentioned, the leading section in the insertion section is incorporated with image unit with ccd sensor etc., is used for light that leading section and the photoconduction of photoconduction (optical fiber) are propagated to the illuminating lens (observation window) of check point irradiation etc.
And then, the leading section in the insertion section also be provided with for the treatment tool with biopsy pliers etc. insert by the pliers hole of disposal section (pliers passage) or be used for carrying out illuminating lens or by the cleaning of disposal section, body cavity expanded and make field of view the supplying gas/delivery nozzle (plenum duct) of supplying gas of usefulness etc. that broaden.
Have adopted supply gas/endoscope of the function of the water of supplying gas/send of delivery nozzle in, generally speaking, flexual flexible pipe inserted by general flexible cord, operating portion and insertion section from adapter passes to leading section.To supply with and eject to the leading section of insertion section from the source of supplying gas or next air or the water of suction source supply that are connected with adapter by this flexible pipe.
In addition, in operating portion, be provided with (fluid) pipeline reversing service with this soft pipe connection, by this pipeline reversing service is operated, thereby can supply gas and send the connection of water/cut-out.
This pipeline reversing service is as an example, shown in patent documentation 1 or patent documentation 2 like that, comprise with insert the hose connection working cylinder that passes to leading section from aforesaid adapter and comprise along the axis direction of this working cylinder move the piston that inserts freely, the doctor operates the button of usefulness.
In these pipeline reversing services, by the piston of button is inserted working cylinder, and the button bearing piece is fixed on the assigned position of endoscopic procedure section, consist of thus pipeline reversing service and it is installed in the endoscope.
In the pipeline reversing service of endoscope, by the pressing of button (depressing) or discharge, be formed on operation obturation that the air exhausting on button and the button head portals or release etc., that utilized the button of button head, thus the connection of the connection that can supply gas/cut off, send water/cut off, supply gas and send the switching etc. of water.
In addition, the periphery at piston is equipped with the roughly filler cylindraceous (containment member) that the space between working cylinder and the piston is separated along axis direction.
In pipeline reversing service, by this filler will be in the space between working cylinder and the piston stream of formed water and air separate, and carry out switching for the stream in the pipeline reversing service of the flexible pipe that is connected with working cylinder based on the operation of button.
[formerly technical literature]
[patent documentation]
[patent documentation 1]: Japanese kokai publication hei 9-294714 communique
[patent documentation 2]: TOHKEMY 2005-006822 communique
In pipeline reversing service as described above, when the operation by button is moved piston, when filler be formed on working cylinder on connecting hole (being connected with the hole of fluid circuit) when contacting, can be attached with damage to filler.Therefore, as patent documentation 2, by forming connecting hole from regional different position that operation by button is moved filler, so that filler does not contact with connecting hole.
But, in endoscope apparatus, when the inspection of at every turn carrying out based on endoscope, need to carry out the cleaning of endoscope.When carrying out the cleaning of endoscope, piston (button) unloaded down from working cylinder clean, and after cleaning, again piston (button) is assembled in the working cylinder.
In endoscope apparatus, owing to the frequency of the loading and unloading of carrying out piston is many, therefore when carrying out the loading and unloading of piston for the cleaning of carrying out endoscope, when filler when connecting hole on the internal diameter that is formed on working cylinder contacts, still can be to the filler additional injury, cause the reduction of sealing property or the fracture of filler, thereby might can't carry out the switching of suitable pipeline.
But, when the loading and unloading of piston, and the situation about contacting of the connecting hole on reckoning without filler and being formed on working cylinder.
Summary of the invention
Target of the present invention is the fluid circuit switching device shifter that provides for the problem points that solves described prior art in a kind of utilization water button of supplying gas/send in endoscope etc., in the fluid circuit switching device shifter of endoscope-use, when piston is loaded and unloaded, prevent that the filler of piston from contacting with connecting hole on being formed on working cylinder, prevent the reduction of the sealing property that the damage of filler brings or the fracture of filler, thereby can suitably carry out the switching of pipeline.
In order to realize described target, the invention provides a kind of fluid circuit switching device shifter, be connected with the fluid circuit of endoscope and the connected state of a plurality of fluid circuits is switched, it is characterized in that, have: button, it has piston and is installed in a plurality of containment members on the piston; Working cylinder, it inserts for piston, along the direction of insertion of piston undergauge progressively, and is formed with the connecting hole that is connected respectively with a plurality of fluid circuits in the side; Stopper, its lower end position that is used for when being pressed into piston in the working cylinder limits, the member that a plurality of containment members progressively attenuate for the front towards the direction of insertion of piston and separate along axis direction in working cylinder between working cylinder inner surface and outer surface of piston, and the diameter of containment member than piston to carry out the internal diameter of epimere of section of sliding-contact little with containment member, the position that is used for connecting hole that each fluid circuit and working cylinder are connected is respectively than to carry out the lower end position of containment member of sliding-contact more forward distolateral with corresponding section.
In such the present invention, preferably, piston has four containment members that more diminish along axial separation configuration and the more forward distolateral configuration of piston, and working cylinder has four zones of carrying out respectively sliding-contact with four containment members of piston, is respectively: the first area of front; With the first area in abutting connection with and than the second area in large footpath, first area; With second area in abutting connection with and than the 3rd zone in the large footpath of second area; With the 3rd zone adjacency and than the 3rd regional greatly the 4th zone in footpath.
In addition, preferably, a plurality of fluid circuits are four fluid circuits, and respectively with bottom, second area, the 3rd zone, the 4th joint area.
In addition, preferably, described working cylinder has the bottom in front, and the zone between first area and the bottom forms than large footpath, first area.
In addition, preferably, stopper for the member that the lower end position of piston is limited as the step butt on the border in second area and the 3rd zone, and on the lower end position with as the step butt on the border in second area and the 3rd zone with the containment member that hermetic separates between second area and the 3rd zone.
In addition, preferably, piston has slide block, and this slide block contacts with the inner surface of working cylinder all the time, and the guiding piston only moves it along the axis direction of working cylinder.
In addition, the invention provides a kind of endoscope, have and be inserted into endoceliac insertion section, be used for ejecting a plurality of pipelines of fluid and being used for the fluid circuit switching device shifter of the fluid that change ejects from leading section from the leading section of this insertion section, and by the insertion section being inserted into come in the body cavity observed section is observed, it is characterized in that, the fluid circuit switching device shifter has: button, and it has piston and is installed in a plurality of containment members on the piston; Working cylinder, it inserts for piston, along the direction of insertion of piston undergauge progressively, and is formed with the connecting hole that is connected respectively with a plurality of fluid circuits in the side; Stopper, its lower end position that is used for when being pressed into piston in the working cylinder limits, the member that a plurality of containment members progressively attenuate for the front towards the direction of insertion of piston and separate along axis direction in working cylinder between working cylinder inner surface and outer surface of piston, the diameter of containment member than piston to carry out the internal diameter of epimere of section of sliding-contact little with containment member, and the position that is used for connecting hole that each fluid circuit and working cylinder are connected is respectively than to carry out the lower end position of containment member of sliding-contact more forward distolateral with corresponding section.
In such endoscope of the present invention, preferably, the piston of fluid circuit switching device shifter has four containment members that more diminish along axial separation configuration and the more forward distolateral configuration of piston, working cylinder has four zones of carrying out respectively sliding-contact with four containment members of piston, is respectively: the first area of front; With the first area in abutting connection with and than the second area in large footpath, first area; With second area in abutting connection with and than the 3rd zone in the large footpath of second area; With the 3rd zone adjacency and than the 3rd regional greatly the 4th zone in footpath.
In addition, preferably, a plurality of fluid circuits are four fluid circuits, and respectively with bottom, second area, the 3rd zone, the 4th joint area.
In addition, preferably, working cylinder has the bottom in front, and the zone between first area and the bottom forms than large footpath, first area.
In addition, preferably, stopper for the member that the lower end position of piston is limited as the step butt on the border in second area and the 3rd zone, and on the lower end position with as the step butt on the border in second area and the 3rd zone with the containment member that hermetic separates between second area and the 3rd zone.
In addition, preferably, piston has slide block, and this slide block contacts with the inner surface of working cylinder all the time, and the guiding piston only moves it along the axis direction of working cylinder.
The invention effect
As mentioned above, fluid circuit switching device shifter of the present invention is for utilizing the member in the middle of the water button of supplying gas/send of endoscope etc., and it is made of the working cylinder that is connected with a plurality of fluid circuits and the piston (button) that inserts in the working cylinder with the state that can move along axis direction.
Structure of the present invention is to possess: the button with piston and a plurality of containment members in the fluid circuit switching device shifter of such endoscope-use; Along the direction of insertion of piston undergauge and be formed with the working cylinder of the connecting hole that is connected with fluid circuit in the side progressively; Be used for the stopper that the lower end position to piston limits, a plurality of containment members for progressively attenuate towards front and with working cylinder in the member that separates along axis direction, the diameter of containment member than piston to carry out the internal diameter of epimere of section of sliding-contact little with containment member, and the position that is used for connecting hole that each fluid circuit and working cylinder are connected is respectively than to carry out the lower end position of containment member of sliding-contact more forward distolateral with corresponding section.
Therefore, according to the present invention, when carrying out the loading and unloading of piston, can prevent the situation that the filler of piston contacts with connecting hole on being formed on working cylinder.Therefore, can prevent the situation of the fracture of the reduction of the sealing property that the damage of filler brings or filler, thereby can suitably carry out the switching of pipeline.In addition, owing to can prevent the damage of filler, therefore can realize the long lifetime of filler.
Description of drawings
Fig. 1 is the figure of an example that conceptually represents to utilize the endoscope of the present invention of fluid circuit switching device shifter of the present invention.
Fig. 2 is the concept map of leading section of the insertion section of endoscope shown in Figure 1.
Fig. 3 is the concept map for the fluid circuit in the endoscope.
Fig. 4 (A) is the figure that conceptually represents for the section of the button of the water button of supplying gas/send of endoscope shown in Figure 1 and button bearing piece, and Fig. 4 (B) is the figure that conceptually represents the section of this water button of supplying gas/send.
Fig. 5 (A) and (B) be the concept map that describes for the effect to the water button of supplying gas/send that is used for endoscope shown in Figure 1.
Symbol description
10 endoscopies
12 insertion sections
14 operating portions
14a wall section
16 general flexible cords
The 18LG adapter
20 video-frequency connectors
24 leading sections
26 turning parts
28 bending sections
32 forceps channels
34 attract button
The 36 water buttons of supplying gas/send
38LR handles knob
40UD handles knob
The 42LR brake
The 46UD brake
48 attract adapter
The 48L attraction channel
50 send water connector
50i, 52i inflow entrance
The 50j flow export
50L send aquaporin
52 adapters of supplying gas
The 52j outlet
The 52L plenum duct
The 54LG bar
60 illuminating lenss
62 pliers holes
62L pliers passage
64 supply gas/delivery nozzle
The 64L aquaporin of supplying gas/send
68 buttons
70 button bearing pieces
72 working cylinders
Zone, the large footpath of 72a
72b central diameter zone
72c path zone
The path of 72d zone
72e water introduction part
76 pistons
The 76a minor diameter part
The 76b slotted hole
76c, 76d, 78a, 98a through hole
78 button heads
The 80a rib
80b, 80c, 84,90 recesses
The 80d flange
82a, 82b, 82c, 82d filler
86 slide blocks
92 baffle plates
98 (button bearing piece) main body
100 mounting cups
The specific embodiment
Below, the preferred embodiment according to shown in the accompanying drawing that adds is described in detail for fluid circuit switching device shifter of the present invention and endoscope.
Conceptually show an example of the endoscope of the present invention that utilizes fluid circuit switching device shifter of the present invention among Fig. 1.
Endoscope shown in Figure 1 10 is in the disposal section that is inserted in the treatment of carrying out body cavity (digestive tube, otorhinolaryngology etc.) etc. or inspection, thereby carries out the member of the disposal etc. of the photography of observation, still image or dynamic image in the body, the collection of bio-tissue etc.
In addition, insertion section 12 is inserted in the check point that waits in the body cavity, and it similarly has leading section 24, turning part 26 and the bending section 28 of front end (end opposite of the front end=operating portion 14 of inserting side) with known endoscope on the position of strip.
The position that operating portion 14 operates for endoscope 10.
With common endoscope similarly, in operating portion 14, dispose forceps channel 32, be used for carrying out from the attraction of leading section 24 attraction button 34, and be used for supplying gas and sending the water button 36 etc. of supplying gas/send of water from leading section 24.
This water button of supplying gas/send is the fluid circuit switching device shifter of endoscope-use of the present invention.Endoscope 10 is essentially known endoscope except utilize fluid circuit switching device shifter of the present invention as being located at the supplying gas/sending water button 36 of operating portion 14.
In operating portion 14, also be provided with the LR that makes to the left and right direction bending of turning part 26 handle knob 38, make this turning part 26 up and down the crooked UD of direction (with the direction of described left and right sides quadrature) handle knob 40, and be used under case of bending, keeping LR brake 42 and the UD brake 46 of turning part 26.
And then, in as the endoscope 10 of electronic observation device except these operating mechanisms, also be provided with the photography switch of Zoom switch, still image, the photography switch of dynamic image, the switch that fixes etc., adopt image unit (ccd sensor) to come the various switches that the endoscope that image is observed/photographed is had.
LG (Light Guide: photoconduction) adapter 18 for the attraction source of the facility that is used for using endoscope, send the water source, are connected in the position that connects in the source of supplying gas etc. with endoscope.Therefore, in LG adapter 18, be provided with for endoscope 10 is connected with the attraction source attract mechanism) the attraction adapter 48 that connects, be used for this endoscope 10 with send that water source (watering=water-absorption mechanism) connects send water connector 50, and be used for the adapter 52 etc. of supplying gas that this endoscope 10 and the source of being connected (mechanism of supplying gas) are connected.
In addition, in LG adapter 18, be provided with for the LG bar 54 that connects lighting source or when using electric mes, connect the S terminal etc. of S flexible cord.
As previously mentioned, endoscope 10 is the electronic observation device, therefore be connected with to use at LG adapter 18 processor device is connected the video-frequency connector 20 that connects with endoscope.The image (view data) that ccd sensor 52 shooting is arrived or the various indications in the operating portion 14 are by data cable, and via this LG adapter 18 from video-frequency connector 20 to outputs such as processor devices.
General flexible cord (LG bending section) 16 is that LG adapter 18 is connected the position that connects with operating portion.
In this general flexible cord 16, accommodate/insert be connected with send that water connector 50 is connected send Aquaporin-5 0L, the plenum duct 52L that is connected with the adapter 52 of supplying gas, with the attraction channel 48L that attracts adapter 48 to be connected, photoconduction, data cable etc.
As previously mentioned, the insertion section 12 of endoscope 10 has leading section 24, turning part 26 and bending section 28 and consists of.
Turning part (bending section) the 26th, for make leading section 24 to the target location insert or be arranged in the target location and LR by operating portion 14 handle knob 38 etc. operation reach up and down about (4 directions of quadrature) crooked zone.
Conceptually show the front (front end face of insertion section 12) of leading section 24 among Fig. 2.
In the endoscope 10 of illustrated example, in leading section 24, be incorporated with photographic lens 58 and illuminating lens 60 with image unit.
Realize blocking by the required element of the photography of pack into ccd sensor or photographic lens 58 etc. or optics etc.The holding wire of the image of photographing for delivery of image unit is inserted via insertion section 12 (turning part 26 and bending section 28), operating portion 14, general flexible cord 16, LG adapter 18 and is passed to video-frequency connector 20.
The lens that illuminating lens 60 shines to the section of being examined for the light that is used for photoconduction (for example thin optic fibre bundle) is propagated.Photoconduction is inserted and is inserted the LG bar 54 that passes to LG adapter 18 by insertion section 12 (ditto), operating portion 14, general flexible cord 16.
In addition, 12 leading section 24 is formed with pliers hole 62, is used for supplying gas and sending supplying gas/delivery nozzle 64 of water in the insertion section.
Conceptually show the fluid circuit in the endoscope 10 among Fig. 3.
The attraction adapter 48 of LG adapter 18 is connected with attraction channel 48L.Attraction channel 48L inserts by general flexible cord 16 from LG adapter 18 and arrives operating portion 14, and is connected with attracting button 34 in operating portion 14.And then attraction channel 48L is from attracting button 34 to be connected with pliers passage 32L.
In addition, the water connector 50 that send of LG adapter 18 is connected with sending Aquaporin-5 0L.Send Aquaporin-5 0L to insert by general flexible cord 16 from LG adapter 18 and arrive operating portion 14, and in operating portion 14, be connected with the water button 36 of supplying gas/send.And then, send Aquaporin-5 0L to be connected with the aquaporin 64L that supplies gas/send from the water button 36 of supplying gas/send.
On the other hand, the adapter 52 of supplying gas of LG adapter 18 is connected with plenum duct 52L.Plenum duct 52L also inserts by general flexible cord 16 and arrives operating portion 14, and is connected with the water button 36 of supplying gas/send in operating portion 14.And then plenum duct 52L also is connected with the aquaporin 64L that supplies gas/send from the water button 36 of supplying gas/send.
Be connected with and send the aquaporin 64L that supplies gas/send of Aquaporin-5 0L and plenum duct 52L to insert by insertion section 12 (bending section 28 and turning part 24), and in the leading section 24 of insertion section 12 with supply gas/delivery nozzle 64 is connected.
The general profile chart of this water button 36 of supplying gas/send has been shown among Fig. 4.
This water button 36 of supplying gas/send is made of button 68, button bearing piece 70 and working cylinder 72 basically.Need to prove, in Fig. 4, figure (A) expression button 68 and button bearing piece 70, figure (B) expression comprises working cylinder 72 at state interior, that the water button 36 of supplying gas/send is loaded into the operating portion 14 of endoscope 10.
Shown in Fig. 4 (B), working cylinder 72 is lower surface obturation and the member that is metal general cylindrical shape.Need to prove, in the present invention, D score refers to the private side (that is, button 68 press direction) of endoscope 10 (operating portion 14), " on " refer to the outer side (that is, from this release direction of pressing) of endoscope 10.
Be formed with circular through hole and erect around this through hole at the assigned position of operating portion 14 in the endoscope 10 and be provided with the wall 14a of section cylindraceous.Inner surface at the 14a of this wall section is formed with ridge.On the other hand, the upper-end outer surface at working cylinder 72 also is formed with ridge.In endoscope 10, screw togather the outer surface of the upper end of working cylinder 72 by the inner surface at the 14a of this wall section, thereby working cylinder 72 is fixed on the operating portion 14.
Working cylinder 72 has the bottom, its inside makes diameter diminish (the large regional 72a in footpath, central diameter zone 72b, path zone 72c and path zone 72d) with being gradually four-stage towards the below of axis direction, and becomes large (water introduction part 72e) at the lowest end diameter.
Need to prove, the axis direction (centerline direction) of the piston 76 of working cylinder 72 and button 68 described later is consistent, therefore in the following description, only this direction is referred to as " axis direction ".
In working cylinder 72, be formed with the inflow entrance 50i of water at the water introduction part 72e of lowest end, and be connected with the entrance side that send Aquaporin-5 0L at this.In addition, be formed with the flow export 50j of water in the bottom of path zone 72c, and be connected with the outlet side that send Aquaporin-5 0L at this.
And then, in working cylinder 72, be formed with the inflow entrance 52i of air in the bottom of central diameter zone 72b, and be connected with the entrance side of plenum duct 52L at this.In addition, be formed with the outlet 52j of air at the large regional 72a in footpath, and be connected with the outlet side of plenum duct 52L at this.
In addition, be formed with the slotted hole 76b (perforation) that extends along axis direction at the center of piston 76.Shown in Fig. 4 (B), this slotted hole 76b forms near the bottom of central diameter zone 72b that the lower end is positioned at working cylinder 72 under the state that button 68 is not pressed.
In addition, the lower end of slotted hole 76b forms, and is positioned at the path zone 72c (with reference to figure 5 (B)) of working cylinder 72 in the time of below button 68 is pressed into.
Need to prove, in the following description, for convenient, the state that button 68 is not pressed is referred to as " settling position ", and being pressed into button 68, the state of below is referred to as " pressing position (lower end position) ".
In piston 76, be formed with two through hole 76c and the 76d that isolates at axis direction to connect to the mode of slotted hole 76b.
The through hole 76c of top forms, and is positioned at the large-diameter portion 72a of working cylinder 72 under settling position, and is positioned at the central diameter zone 72b of working cylinder 72 under pressing position.
The through hole 76d of downside is formed on the bottom of slotted hole 76b.As previously mentioned, under steady statue, the lower end part of slotted hole 76b is in the bottom of central diameter zone 72b.Thereby the through hole 76d of this downside is positioned at the path zone 72c of working cylinder 72 under pressing position.
Whole circumference in the bottom of piston 76 is formed with two rib 80a that isolate at axis direction.In addition, embed/maintain filler cylindraceous (containment member) 82a between this rib 80a, this filler 82a has protuberance in periphery.
In addition, among the filler 82a at least with the abutting part of working cylinder inner surface butt under settling position and pressing position, also can form and be positioned at assigned position shown below.
About this point, also be same for other filler (containment member) 82b～82d.
In addition, the external diameter of filler 82a (maximum diameter) is larger and less than the internal diameter of water introduction part 72e than the internal diameter of path zone 72d.That is working cylinder 72 inner surfacies that, filler 82a will path zone 72d and the space between piston 76 outer surfaces are liquid-tight and separate airtightly along axis direction.
Need to prove, in the following description, for convenient, space between working cylinder 72 inner surfacies and piston 76 outer surfaces is referred to as " working cylinder 72 in ", the liquid-tight and airtight separation of the axis direction in this working cylinder 72 that will be realized by filler is referred to as " along the axis direction separation ".
Whole circumference directly over the minor diameter part 76a of piston 76 is formed with recess 80b.In this recess 80b, embed/maintain the filler 82b cylindraceous that has protuberance in periphery.
On the recess 80b of piston 76 and the whole circumference between through hole 76c and the 76d be formed with recess 80c.In this recess 80c, embed/maintain the filler 82c cylindraceous that has protuberance in periphery.
In addition, recess 80c and filler 82c form, the step butt of the bottom of filler 82c and the boundary line of the central diameter zone 72b that constitutes working cylinder 72 and path zone 72c under pressing position, and under this position, will separate along axis direction in the working cylinder 72.
That is, filler 82c also has the effect as the stopper that limits for the pressing position (lower end position) to button 86 (piston 76).
On the through hole 76c of the recess 80c of piston 76 and upside, be formed with the flange part 80d that has rib at upper and lower side.Between the rib of this flange part 80d, embed/maintain the filler 82d cylindraceous that has protuberance in periphery.
Flange part 80 and filler 82d form, and filler 82d is positioned at the large footpath zone 72a of working cylinder 72 all the time.In addition, the external diameter of filler 82d is larger than the internal diameter of the large regional 72a in footpath.That is, filler 82d separates the large footpath zone 72a in the working cylinder 72 along axis direction.
As previously mentioned, the inside of working cylinder 72 is the large regional 72a in footpath, central diameter zone 72b, path zone 72c and path zone 72d from upper progressively undergauge.
In addition, as mentioned above, for the filler on being installed in piston 76, the filler 82d of topmost separates the large regional 72a in footpath along axis direction, the filler 82c of its below separates central diameter zone 72b along axis direction, the filler 82b of its below separates path zone 72c along axis direction, the filler 82a of its below separates path zone 72d along axis direction.
That is, in illustrated example, in the working cylinder 72 towards the below undergauge progressively, be installed on the piston 76 filler also with its correspondingly, towards the below external diameter is diminished.
As described above, in endoscope apparatus, when being checked by endoscope, need to carry out the cleaning of endoscope at every turn.When carrying out the cleaning of endoscope, piston (button) unloaded down from working cylinder clean, after cleaning, again piston (button) is assembled on the working cylinder.
Like this, in endoscope apparatus, owing to the frequency of the loading and unloading of carrying out piston is many, therefore when carrying out the loading and unloading of piston for the cleaning of carrying out endoscope, when filler when connecting hole on the internal diameter that is formed on working cylinder contacts, can to the filler additional injury, cause the reduction of sealing property or the fracture of filler, thereby might can't carry out the switching of suitable pipeline.
Relative with it, structure of the present invention is, in the working cylinder 72 towards the below undergauge progressively, be installed on the piston 76 filler also with its accordingly, form the shape that external diameter is diminished towards the below, and the link position that makes fluid circuit is respectively than the pressing position (lower end position) that carries out the filler of sliding-contact with corresponding section side (front) more on the lower, thus with button 68 (piston 76) when packing working cylinder 72 into, can prevent filler and the inflow entrance 50i that is formed on the inner surface of working cylinder 72,52i, the situation of the edge sliding-contact of flow export 50j and outlet 52j (that is, connecting hole).
Namely, according to this structure, when unloading and cleaning after finishing etc. again button installation 68 for the cleaning of carrying out endoscope 10 etc. and with button 68, can prevent from the connecting hole (edge in hole etc.) in working cylinder 72 filler being produced damage, can prevent the reduction of sealing property or the fracture of filler, thus can suitably carry out can pipeline switching.In addition, owing to can prevent the damage of filler, therefore can realize the long lifetime of filler.
Whole circumference between bottom piston 76, recess 80b (filler 82b) and slotted hole 76b is formed with recess 84.In this recess 84, embed/maintain roughly slide block 86 cylindraceous.
At this, slide block 86 has the regional 72c of the path that can insert working cylinder 72 and the external diameter roughly the same with the internal diameter of path zone 72c.Thereby, button 68 is being pressed/when discharging, the whole circumference butt of the path of slide block 86 and working cylinder 72 zone 72c inner peripheral surface, and carry out sliding-contact and mobile along axis direction.
That is, the guiding elements that slide block 86 guides for the movement to button 68 (piston 76), it comes call-on button 68 in the mode that button 68 is moved along axis direction.
And then, on the recess 80c of piston 76 (filler 82c), be formed with recess 90.In this recess 90, embed/maintain baffle plate 92.
This baffle plate 92 has the such effect of employed valve rubber in the tire of so-called bicycle (valve rubber) that is similar to.
That is, baffle plate 92 covers through hole 76c airtightly by the outer peripheral face butt of upper end and piston 76, but its upper end constitutes free end.Therefore, baffle plate 92 broadens owing to the pressure from inside makes the upper end from through hole 76c air-out the time, and air is discharged to the outside of baffle plate 92.On the contrary, in the situation that baffle plate 92 is applied with pressure from the outside, keeps being covered with the state of through hole 76c, thereby play a role as check-valves.
Need to prove, in illustrated example, the filler 82c split of baffle plate 92 and its below forms, but the present invention is not limited thereto.
That is, according to the shape of working cylinder 72 or piston 76 or the difference of structure, the filler 82c of baffle plate 92 and its below also can be integrally formed.
The button head 78 of the upper end that covers piston 76 is installed in the upper end of button 68.Button head 78 (its upper surface) directly contacts the position that the water button 36 of supplying gas/send is operated for doctor institute in the middle of the diagnosis of having adopted endoscope 10 etc.
In illustrated example, button head 78 is two stage ground Zhu Jian Minus roughly members cylindraceous few and have through hole at the center for external diameter towards the below, and it is for example by screwing togather on the upper end that is installed in piston 76.Button head 78 is formed by resin etc. usually.
As an example, the top constitutes minor diameter part 78a in the through hole of button head 78, and the below constitutes large-diameter portion 78b, and the upper end of the large-diameter portion 78b of below and piston 76 screws togather.
On the other hand, the minor diameter part 78a of the top of the through hole of button head 78 when button head 78 is installed in piston 76 be formed at piston 76 in slotted hole 76b consistent (connection).
In illustrated example, button bearing piece 70 consists of by the button bearing piece main body 98 of button 68 and the mounting cup 100 of this button bearing piece main body 98 of coating by inserting.
Button bearing piece main body 98 (below, be referred to as " main body 98 ") be metal member, it has near inaccessible dual pipe shape (section is the roughly toroidal of the U word shape) bottom.That is, main body 98 has circular through hole 98a at the center.
At this, as shown in Figure 4, the external diameter of the second segment of button head 78 (hypomere of axis direction) is larger than the internal diameter of the through hole 98a of main body 98.In addition, also the internal diameter than the through hole 98a of main body 98 is large the external diameter of flange 80d of filler 82d of the top of piston 76 to be installed.
Thereby button 68 can by mistake not come off from main body 98 (button bearing piece 70).
In addition, between the lower surface of the maximum diameter section of near the inaccessible face the bottom of main body 98 and button head 78, dispose spring 102.
102 pairs of button heads 78 of this spring are the application of force upward.Button 68 is by this spring 102 and by the application of force upward, stops in the position of lower surface (forming the lower end of the cylinder of the through hole 98a) butt of flange 80d and main body 98, thereby remains on settling position.
Mounting cup 100 is the roughly member cylindraceous of rubber system.
This mounting cup 100 in cylinder above, the button bearing piece main body 98 of described dual pipe shape is accommodated/coating, thereby comes hold button bearing piece main body 98 by the elasticity of self.
In addition, the internal diameter of mounting cup 100 is roughly the same with the external diameter that is formed on the wall 14a of section cylindraceous on the aforesaid operating portion 14.And then.Be formed with the installation portion 100a of convex at the whole circumference of the inside lower end section of mounting cup 100.
As previously mentioned, mounting cup 100 is cylindric and contains therein the main body 98 that dual pipe is constructed.Thereby, by being come the coating wall 14a of section by mounting cup 100, thereby with the through hole 98a of main body 98 be installed in working cylinder 72 interior connections on the 14a of wall section.
The water button 36 of supplying gas/send of illustrated example inserts working cylinders 72 with the piston 76 of button 68, and coating is formed at the outside of the 14a of wall section of operating portion 14, and engages with installation portion 100a and the 14a of wall section of mounting cup 100.
Supplying gas/sending in the water button 36, button 68 and 70 loading and unloading of button bearing piece are being installed in freely consist of the water button 36 of supplying gas/send on the operating portion 14 of endoscope 10 whereby.
Need to prove, in illustrated example, button bearing piece 70 is formed by the mounting cup 100 of metal main body 98 and this main body 90 of coating, but the present invention is not limited thereto.
That is, in the present invention, the button bearing piece of inserting by button 68 also can come such as the shaping by having utilized resin etc. integrally formed.At this moment, the button bearing piece to the loading and unloading installation freely of endoscope by with button bearing piece 70 same utilize elastic method, utilize screw togather or concavo-convex chimeric, the installation of having adopted fixed component etc., known method gets final product.
Below, with reference to figure 5, describe by the effect to the water button 36 of supplying gas/send, thereby illustrate in greater detail for liquid line switching device shifter of the present invention.
Shown in Fig. 5 (A) (Fig. 4 (B)), under steady statue, button 68 is by the effect of spring 102 and by the application of force upward and kept.
Under steady statue, 72 water introduction part 72e send water from inflow entrance 50i to working cylinder from sending water that Aquaporin-5 0L supplies with.
Under steady statue, the filler 82a that is configured in the bottom of piston 76 is positioned at the path zone 72d on the water introduction part 72e.As previously mentioned, this filler 82a will separate along axis direction in the working cylinder 72 at the assigned position place of path zone 72d.
Thereby under steady statue, the water of sending into water introduction part 72e stops in this water introduction part 72e, does not send water to position in addition.
On the other hand, the air of supplying with from plenum duct 52L is supplied gas in 72 from introducing port 52i to working cylinder.
Under steady statue, be formed with the position of this introducing port 52i below introducing port 52i, the filler 82b that is positioned at path zone 72c separates working cylinder 72 along axis direction.On the other hand, above introducing port 52i, the filler 82c that is positioned at central diameter zone 72b separates working cylinder 72 along axis direction.
Thereby, the slotted hole 76b of the air of supplying gas in 72 from introducing port 52i to working cylinder from the through hole 76d of the bottom that is positioned at central diameter zone 72b to piston 76 supplies gas, and discharge the outside to the water button 36 of supplying gas/send (button 68) via the through hole 78a of slotted hole 76b and button head 78.
At this, under this steady statue, the doctor that endoscope 10 operates comes the through hole 78a of block push button head 78 by finger.
Thus, the air of sending among the slotted hole 76b of piston 76 has lost whereabouts, baffle plate 92 is carried out companding and in working cylinder 72, supply gas from the through hole 76c of the upside of piston 76, and supply gas to the plenum duct 52L of outlet side from the outlet 52j that is formed on the working cylinder 72.
The air of sending among the plenum duct 52L is then supplied gas to the aquaporin 64L that supplies gas/send, and from supply gas/delivery nozzle 64 ejects.
And then, when the doctor presses button head 78, constitute the pressed state shown in Fig. 5 (B).
Under this state, in path zone 72d, move along the filler 82a of the axis direction separation water introduction part 72e below to it in working cylinder 72.As previously mentioned, the diameter of filler 82a is less than the internal diameter of water introduction part 72e.Thereby, send into the filler 82b that water among the water introduction part 72e is fed through by path zone 72d and path zone 72c and separate the zone that obtains.
At this, be formed with flow export 50j in the bottom of the path zone of working cylinder 72 72c, and be connected with herein the outlet side that send Aquaporin-5 0L.Thereby, send into water among the 72c of path zone to sending Aquaporin-5 0L to send water.
The water of sending among the Aquaporin-5 0L then send water to the aquaporin 64L that supplies gas/send, and from supply gas/delivery nozzle 64 ejects.
At this, as previously mentioned, filler 82c under pressing position, the step butt of the bottom that makes filler 82c and the boundary line of the central diameter zone 72b that constitutes working cylinder 72 and path zone 72c と, thus separate along axis direction in working cylinder 72 in this position.
In addition, under pressed state, the through hole 76d of downside is positioned at path zone 72c.On this basis, the filler 82b of the below of water by being positioned at through hole 76c stops.
Thereby, under pressed state, can not supply gas by 76 interior slotted hole 76b from through hole 76c to piston from the air that the inflow entrance 52i that is connected with plenum duct 52L supplies gas out.That is, if adopt the water button 36 of supplying gas/send, under pressed state, can cover and supply gas and suitably only send water.
And then when the pressing of doctor's release-push head 78, under the effect of spring 102, button 68 is moved upward and constitutes steady statue.
Then, the loading and unloading about piston 76 (button 68) illustrate in greater detail.
Shown in Fig. 4 (B), in the path zone 72d of the filler 82a of front institute sliding-contact, form the connecting hole that is connected with fluid circuit, in addition, the internal diameter of the working cylinder 72 in the zone more closer to the top than the regional 72d of path is larger than filler 82a.Thereby when piston 76 was loaded and unloaded, filler 82a can not contact with connecting hole (flow export 50j etc.).
Then, among the 72c of the path zone of the filler 82b institute sliding-contact of the second order from front, be formed with and the outlet 50j that send Aquaporin-5 0L to be connected.Shown in Fig. 5 (B), the position of the filler 82b when this outlet 50j is formed on and is in pressing position than piston 76 is side (front) more on the lower.Thereby, do not form the connecting hole that is connected with fluid circuit at the upside of the filler 82b of path zone 72c, in addition, the internal diameter of the working cylinder 72 in the zone more closer to the top than the regional 72c of path is larger than filler 82b.Thereby when piston 76 was loaded and unloaded, filler 82b can not contact with connecting hole (inflow entrance 52i etc.).
Similarly, among the 72b of the central diameter zone of the filler 82c institute sliding-contact of the 3rd order from front, be formed with the inflow entrance 52i that is connected with plenum duct 52L.Shown in Fig. 5 (B), the position of the filler 82c when this inflow entrance 52i is formed on and is in pressing position than piston 76 is side (front) more on the lower.Thereby, do not form the connecting hole that is connected with fluid circuit at the upside of the filler 82c of central diameter zone 72b, in addition, the internal diameter of the working cylinder 72 in the zone more closer to the top than the regional 72b of central diameter is larger than filler 82c.Thereby when piston 76 was loaded and unloaded, filler 82c can not contact with connecting hole (outlet 52j etc.).
In addition, among the 72a of the zone, large footpath of 82 sliding-contacts of filler of the 4th order (the top) from front, be formed with the outlet 52j that is connected with plenum duct 52L.Shown in Fig. 5 (B), the position of the filler 82d when this outlet 52j is formed on and is in pressing position than piston 76 is side (front) more on the lower.Thereby, do not form the connecting hole that is connected with fluid circuit at the large directly upside of the filler 82d of regional 72a.Thereby when piston 76 was loaded and unloaded, filler 82d can not contact with connecting hole (outlet 52j etc.).
Like this, according to structure of the present invention, when unloading and cleaning after finishing etc. again button installation 68 for the cleaning of carrying out endoscope 10 etc. and with button 68, can prevent because the edge of the connecting hole in the working cylinder 72 etc. makes the situation of filler damage, in the endoscope apparatus that need to clean check at every turn, the damage of the filler in the time of can preventing the loading and unloading of piston can prevent the reduction of sealing property or the fracture of filler, thereby can suitably carry out the switching of pipeline.In addition, owing to can prevent the damage of filler, therefore can realize the long lifetime of filler.
Above, liquid line switching device shifter and endoscope for endoscope-use of the present invention explain, but the present invention is not limited to above-described embodiment, in the scope that does not exceed purport of the present invention, can carry out various changes or improvement is self-evident.
[industrial applicibility]
Can preferably utilize and be used for various diagnosis and treatment or the endoscope of inspection.
Claims (12)
1. fluid circuit switching device shifter is connected with the fluid circuit of endoscope and the connected state of a plurality of fluid circuits is switched, and it is characterized in that having:
Button, it has piston and is installed in a plurality of containment members on the described piston;
Working cylinder, it inserts for described piston, along the direction of insertion of described piston undergauge progressively, and is formed with the connecting hole that is connected respectively with described a plurality of fluid circuits in the side;
Stopper, it is used for limiting the lower end position when being pressed into described piston in the described working cylinder,
Described a plurality of containment member progressively attenuates and is separating along axis direction in described working cylinder between described working cylinder inner surface and the outer surface of piston towards the front of the direction of insertion of described piston, and, the diameter of described containment member than described piston to carry out the internal diameter of epimere of section of sliding-contact little with described containment member
The position that is used for described connecting hole that each fluid circuit and described working cylinder are connected is respectively than to carry out the lower end position of described containment member of sliding-contact more forward distolateral with corresponding section.
2. fluid circuit switching device shifter as claimed in claim 1, wherein,
Described piston has along the axial separation configuration of described piston and four described containment members that progressively attenuate towards front,
Described working cylinder has four zones of carrying out respectively sliding-contact with four described containment members of described piston, is respectively: the first area of front; With described first area in abutting connection with and than the second area in large footpath, described first area; With described second area in abutting connection with and than the 3rd zone in the large footpath of described second area; With described the 3rd zone adjacency and than large the 4th zone directly, described the 3rd zone.
3. fluid circuit switching device shifter as claimed in claim 2, wherein,
Described a plurality of fluid circuit is four fluid circuits, and respectively with described bottom, described second area, described the 3rd zone, described the 4th joint area.
4. fluid circuit switching device shifter as claimed in claim 3, wherein,
Described working cylinder has the bottom in described front, and the zone between described first area and the described bottom forms than large footpath, described first area.
5. such as each described fluid circuit switching device shifter in the claim 2～4, wherein,
Described stopper is and the member that limits as the step butt on the border in described second area and described the 3rd zone and to the described lower end position of described piston, and be on the described lower end position with as the step butt on the border in described second area and described the 3rd zone and with the containment member that hermetic separates between described second area and described the 3rd zone.
6. such as each described fluid circuit switching device shifter in the claim 1～4, wherein
Described piston has slide block, and this slide block contacts with the inner surface of described working cylinder all the time, and guides described piston that it is only moved along the axis direction of described working cylinder.
7. endoscope, have be inserted into endoceliac insertion section, be used for from the leading section of this insertion section eject fluid a plurality of pipelines, and be used for the fluid circuit switching device shifter of the fluid that change ejects from described leading section, described endoscope is observed observed section by described insertion section is inserted into to come in the body cavity
Described endoscope is characterised in that,
Described fluid circuit switching device shifter has: button, and it has piston and is installed in a plurality of containment members on the described piston; Working cylinder, it inserts for described piston, along the direction of insertion of described piston undergauge progressively, and is formed with the connecting hole that is connected respectively with described a plurality of fluid circuits in the side; Stopper, it is used for limiting the lower end position when being pressed into described piston in the described working cylinder,
Described a plurality of containment member progressively attenuates and is separating along axis direction in described working cylinder between described working cylinder inner surface and the outer surface of piston towards the front of the direction of insertion of described piston, and, the diameter of described containment member than described piston to carry out the internal diameter of epimere of section of sliding-contact little with described containment member, the position that is used for described connecting hole that each fluid circuit and described working cylinder are connected is respectively than to carry out the lower end position of described containment member of sliding-contact more forward distolateral with corresponding section.
8. endoscope as claimed in claim 7, wherein,
The described piston of described fluid circuit switching device shifter has along the axial separation configuration of described piston and more configures four described containment members that more diminish by described front,
Described working cylinder has four zones of carrying out respectively sliding-contact with four described containment members of described piston, is respectively: the first area of described front; With described first area in abutting connection with and than the second area in large footpath, described first area; With described second area in abutting connection with and than the 3rd zone in the large footpath of described second area; With described the 3rd zone adjacency and than large the 4th zone directly, described the 3rd zone.
9. endoscope as claimed in claim 8, wherein,
Described a plurality of fluid circuit is four fluid circuits, and respectively with described bottom, described second area, described the 3rd zone, described the 4th joint area.
10. endoscope as claimed in claim 9, wherein,
Described working cylinder has the bottom in described front, and the zone between described first area and the described bottom forms than large footpath, described first area.
11. such as each described endoscope in the claim 8～10, wherein,
Described stopper is and the member that limits as the step butt on the border in described second area and described the 3rd zone and to the described lower end position of described piston, and be on the described lower end position with as the step butt on the border in described second area and described the 3rd zone and with the containment member that hermetic separates between described second area and described the 3rd zone.
12. such as each described endoscope in the claim 7～10, wherein,
Described piston has slide block, and this slide block contacts with the inner surface of described working cylinder all the time, and guides described piston that it is only moved along the axis direction of described working cylinder.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011209239A JP5414759B2 (en) | 2011-09-26 | 2011-09-26 | Fluid line switching device and endoscope |
| JP2011-209239 | 2011-09-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103006167A true CN103006167A (en) | 2013-04-03 |
| CN103006167B CN103006167B (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210311048.5A Active CN103006167B (en) | 2011-09-26 | 2012-08-28 | Fluid circuit switching device shifter and endoscope |
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| Country | Link |
|---|---|
| JP (1) | JP5414759B2 (en) |
| CN (1) | CN103006167B (en) |
Cited By (7)
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| CN104853667A (en) * | 2013-04-18 | 2015-08-19 | 奥林巴斯株式会社 | Endoscopic tube switching device, endoscope, and production method for endoscopic tube switching device |
| CN106132271A (en) * | 2014-08-07 | 2016-11-16 | 奥林巴斯株式会社 | Endoscope-use pipeline switching device |
| CN109414157A (en) * | 2016-06-29 | 2019-03-01 | 奥林巴斯株式会社 | Endoscope-use button |
| CN110248586A (en) * | 2017-02-01 | 2019-09-17 | 奥林巴斯株式会社 | Endoscope-use aspirated and water sending valve and endoscope |
| CN110248587A (en) * | 2017-02-01 | 2019-09-17 | 奥林巴斯株式会社 | Endoscope-use aspirated and water sending valve and endoscope |
| CN110522396A (en) * | 2019-09-04 | 2019-12-03 | 重庆金山医疗技术研究院有限公司 | A kind of medical endoscope and its aqueous vapor switching valve |
| WO2020188406A1 (en) * | 2019-03-15 | 2020-09-24 | Shie Chang Bih | Nasogastric tube |
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| EP3241480A4 (en) | 2016-02-29 | 2019-11-20 | Olympus Corporation | Conduit control apparatus |
| JP6125134B1 (en) * | 2016-02-29 | 2017-05-10 | オリンパス株式会社 | Pipe line control device |
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| CN104853667A (en) * | 2013-04-18 | 2015-08-19 | 奥林巴斯株式会社 | Endoscopic tube switching device, endoscope, and production method for endoscopic tube switching device |
| CN106132271A (en) * | 2014-08-07 | 2016-11-16 | 奥林巴斯株式会社 | Endoscope-use pipeline switching device |
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| CN110522396A (en) * | 2019-09-04 | 2019-12-03 | 重庆金山医疗技术研究院有限公司 | A kind of medical endoscope and its aqueous vapor switching valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013066666A (en) | 2013-04-18 |
| CN103006167B (en) | 2016-04-06 |
| JP5414759B2 (en) | 2014-02-12 |
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