CN101449956B - Medical appliance, endoscope overtube, and endoscope apparatus - Google Patents
Medical appliance, endoscope overtube, and endoscope apparatus Download PDFInfo
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- CN101449956B CN101449956B CN2008101781648A CN200810178164A CN101449956B CN 101449956 B CN101449956 B CN 101449956B CN 2008101781648 A CN2008101781648 A CN 2008101781648A CN 200810178164 A CN200810178164 A CN 200810178164A CN 101449956 B CN101449956 B CN 101449956B
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Abstract
The invention provides a medical appliance, an endoscope overtube and an endoscope apparatus. The medical appliance of the present invention includes a bending portion 33, an operation portion 3b, bending operation wires 5 pulled and loosened by bending operation, coil pipes 4 in which the bending operation wires 5 are inserted, and coil pipe receivers 6 and cylinders 7 that include compression coil springs 8 and support the proximal end portions of the coil pipes 4 so as to be able to move along directions in which the bending operation wires 5 extend.
Description
Technical field
Carry out medical apparatus and instruments, endoscope overtube, the endoscope apparatus that draw operations makes the bending mechanism of the bending section flexure operation that the insertion section has thereby the present invention relates to have to running through the bending operation line that is inserted in the serpentine pipe.
Background technology
Usually, the insertion section is that soft endoscope constitutes mainly and has: the insertion section, and it is connected with leading section, bending section and flexible pipe portion successively from front; And the operating portion that is located at the base end side of this insertion section.
If an example is shown, then bending section constitutes through connecting a plurality of curved block.The inner surface of the curved block foremost that is positioned at bending section be set with respectively with the bending operation line of usefulness up and down with about the corresponding line of bending operation line used bear portion.
The end of each bending operation line is fixed on each line integratedly through scolding tin etc. and bears in the portion.The for example middle part of each bending operation line is separately fixed on the belt wheel, and said belt wheel can pivot rotatably and be bearing in the operating portion main body that constitutes operating portion.
Each bending operation line runs through and is inserted in by close in the serpentine pipe that helical member etc. constitutes.The not shown serpentine pipe that the front end of serpentine pipe is fixed on the inner surface that for example is fixed in curved block bears in the portion, and the other end is fixed on the serpentine pipe that is fixed in the operating portion main body integratedly and bears in the portion.In addition, the serpentine pipe portion of bearing that is fixed on the operating portion main body is fixing integratedly through the other end of scolding tin and serpentine pipe.
In the endoscope of said structure, when operation is located at crooked knob on the operating portion when making the belt wheel rotation, be fixed on each bending operation line on the belt wheel be pulled, lax, thereby bending section is changed to the case of bending of expectation.
Here; When for make the crooked and prolonged and repeated traction that runs through the bending operation line that is inserted in the insertion section of bending section, when lax; The elongation of bending operation line; Perhaps the total length of serpentine pipe is owing to the compression stress that receives from the bending operation line is shunk, thereby the bending operation line becomes the state of relative absent-mindedness.
So can produce following unfavorable condition etc.: the bending change of bending section can't be followed the operation of crooked knob; Perhaps serpentine pipe is owing to the compression stress that receives from the bending operation line is out of shape; For example the adaptation of the base end side of serpentine pipe improves; Another distolateral being formed on that is in serpentine pipe is fixed in the angle of bend of bending section that serpentine pipe bears the position of portion and is become bigger than the angle of bend of original bending section, thereby the strength of traction bending operation line becomes heavy.
Cause the bending change of bending section can't follow the unfavorable condition of the operation of crooked knob in order to eliminate the state that becomes relative absent-mindedness owing to the bending operation line, the lax device of removing of the operating line in the endoscope of the absent-mindedness that can remove the operating line system for example has been shown in the real fair 4-11687 communique of Japan.
Lax removing at this operating line forms following structures in the device: be provided with first on the part in guide sheath and regulate parts; And; This first regulate be provided with on parts with the mode that can move with respect to the length direction of guide sheath with this first regulate the parts engagement the second adjusting parts; The variation of the position of engagement through both changes guide sheath length, can eliminate the lax of operating line system.
On the other hand, in order to eliminate the unfavorable condition that causes the serpentine pipe distortion owing to the compression stress that receives from the bending operation line, it is also known for for example through using diameter to constitute the method for serpentine pipe than the big helical member of diameter dimension of the helical member that constitutes serpentine pipe.
So; Because the diameter dimension of helical member constitutes particle size; Thereby the intensity of the strength ratio of serpentine pipe serpentine pipe in the past significantly improves, even for example contact and produce under the situation of compression stress with serpentine pipe at the bending operation line, the cardinal extremity that also can eliminate serpentine pipe is by unfavorable conditions such as conquassation.
But, in recent years, be accompanied by a plurality ofization of sending aquaporin, a plurality ofization of treatment instrument passage or the thin footpathization of endoscope, run through the filling rate that is inserted in the inner matter in the insertion section and improve.Therefore, serve as reasons with the space in the expansion insertion section, expectation makes the line footpath of the helical member that constitutes serpentine pipe become thin footpath once more.
The serpentine pipe that directly becomes the structure in thin footpath for the line that makes helical member can be avoided following unfavorable condition: running through with high fill-ratio in the insertion section that is inserted with inner matter when the bending operation line is compressed power, because compression stress and for example desire crooked serpentine pipe and contact and unfavorable conditions such as distortion with other inner matter.
But; Because the filling rate of inner matter is low in the operating portion main body; Therefore for example be provided under the intravital situation of operating portion master with the straight line states, can guarantee to be pulled the gap between the inner peripheral surface of outer peripheral face and serpentine pipe of bending operation line of operation at serpentine pipe.Therefore, even under the situation of bending operation line of drawing times without number, relax, owing to be that the bending operation line is difficult to and the serpentine pipe contacting structure, so the generation of compression stress is less.
Relative therewith, have bending section and be provided under the intravital situation of operating portion master at for example serpentine pipe, the contact site that the outer peripheral face of the bending operation line of operation contacts with the inner peripheral surface of serpentine pipe can appear being pulled.
Therefore, when drawing, relaxing the bending operation line times without number, might apply compression stress and produce above-mentioned unfavorable condition serpentine pipe from the bending operation line.
Summary of the invention
The present invention In view of the foregoing accomplishes; Its purpose is the medical apparatus and instruments, endoscope overtube and the endoscope apparatus that provide following: can prevent that the serpentine pipe that supplies the bending operation line to run through insertion is out of shape owing to being compressed power from the bending operation line, can stably carry out the traction based on the bending operation line chronically.
In brief, medical apparatus and instruments of the present invention has: the bending section that is located at the front end of flexible pipe; Operating portion, it is connected setting with the cardinal extremity of said flexible pipe, and has the bending operation parts that said bending section carried out bending operation; Bending operation line, its bending operation through said bending operation parts are pulled, relax; Serpentine pipe, said bending operation line inserts in this serpentine pipe, and the front end of this serpentine pipe is fixedly installed on said bending section side, and cardinal extremity is provided in the said operating portion; And the serpentine pipe support unit, it has force application part, with the supporting of the base end part of said serpentine pipe for moving along the bearing of trend of said bending operation line.
And endoscope overtube of the present invention has: the bending section that is located at the front of flexible pipe; Operating portion, it is connected setting with the cardinal extremity of said flexible pipe, and has the bending operation parts that said bending section carried out bending operation; Bending operation line, its bending operation through said bending operation parts are pulled, relax; Serpentine pipe, said bending operation line inserts in this serpentine pipe, and the front end of this serpentine pipe is fixedly installed on said bending section side, and cardinal extremity is provided in the said operating portion; And the serpentine pipe support unit, it has force application part, with the supporting of the base end part of said serpentine pipe for moving along the bearing of trend of said bending operation line.
In addition, endoscope apparatus of the present invention is at endoscope, endoscope overtube and run through at least one in the treatment instrument that is inserted in the endoscope and have with lower component: the bending section that is located at the front of flexible pipe; Operating portion, it is connected setting with the cardinal extremity of said flexible pipe, and has the bending operation parts that said bending section carried out bending operation; Bending operation line, its bending operation through said bending operation parts are pulled, relax; Serpentine pipe, said bending operation line inserts in this serpentine pipe, and the front end of this serpentine pipe is fixedly installed on said bending section side, and cardinal extremity is provided in the said operating portion; And the serpentine pipe support unit, it has force application part, with the supporting of the base end part of said serpentine pipe for moving along the bearing of trend of said bending operation line.
Reach other purpose, feature and advantage from following more than the present invention with reference to will more being expressly understood the description of accompanying drawing.
Description of drawings
Fig. 1 is the figure that the structure of the trocar sheath of the external embedding insertion section that is configured in endoscope describes.
Fig. 2 is the cutaway view of the II-II line along Fig. 1.
Fig. 3 is the figure that the structure to the bending section of the trocar sheath of Fig. 1 describes.
Fig. 4 is the serpentine pipe that runs through insertion of the confession bending operation line to the trocar sheath of Fig. 1 and be fixedly installed on the figure that the intravital serpentine pipe support unit of operating portion master describes.
Fig. 5 is the figure that the structure to the serpentine pipe support unit describes.
Fig. 6 is the figure that the effect to the serpentine pipe support unit of Fig. 5 describes.
Fig. 7 is the figure that the structure as the treatment instrument of medical apparatus and instruments is described.
Fig. 8 is the cutaway view of the VIII-VIII line in Fig. 7.
Fig. 9 is the vertical view that the structure to the variation of serpentine pipe support unit describes.
Figure 10 is the side view of Fig. 9 of describing of the structure to the serpentine pipe support unit.
Figure 11 is the figure that the variation to the serpentine pipe support unit shown in Fig. 9 and Figure 10 describes.
Figure 12 is the vertical view that the structure to another other the variation of serpentine pipe support unit describes.
Figure 13 is the side view of the X III-X III line in Figure 12 that describes of the structure to the serpentine pipe support unit.
Figure 14 is the length direction cutaway view of the serpentine pipe support unit of another other structure.
Figure 15 is the figure when the serpentine pipe that base end side is observed Figure 14 bears portion.
The specific embodiment
Below, with reference to accompanying drawing embodiment of the present invention is described.
Fig. 1 to Fig. 6 is an embodiment with medical apparatus and instruments of bending section; Fig. 1 is the figure that the structure of the trocar sheath of the external embedding insertion section that is configured in endoscope describes; Fig. 2 is the cutaway view of the II-II line in Fig. 1, and Fig. 3 is the figure that the structure to the bending section of the trocar sheath of Fig. 1 describes.
And; Fig. 4 is the serpentine pipe that runs through insertion of the confession bending operation line to the trocar sheath of Fig. 1 and be fixedly installed on the figure that the intravital serpentine pipe support unit of operating portion master describes; Fig. 5 is the figure that the structure to the serpentine pipe support unit describes, and Fig. 6 is the figure that the effect to the serpentine pipe support unit of Fig. 5 describes.
As shown in Figure 1, the endoscope apparatus 1 of this embodiment has as the endoscope 2 of medical apparatus and instruments with as the endoscope overtube of medical apparatus and instruments (below, abbreviate trocar sheath as) 3.
In operating portion 2b, has not shown crooked knob as the bending operation parts; Thereby through this crooked knob is carried out proper handling to not shown bending operation line draw, loose operations; Make the direction of bending section 22 to expectation; For example arrow U direction, the arrow D direction among the figure is above-below direction, and perhaps arrow L direction, arrow R direction are that left and right directions is crooked.
Trocar sheath 3 is assemblied in the main flexible pipe portion 23 of the insertion section 2a that constitutes endoscope 2.Trocar sheath 3 constitutes has 3a of pipe portion and effective operating portion 3b.
As shown in Figures 2 and 3, the 3a of pipe portion has flexible, is the multitube lumen that on long axis direction, has a plurality of through holes, by silicone, polyurethane, Teflon formations such as (registered trade marks).
The 3a of pipe portion has: patchhole 31 is run through in the endoscope that is used to dispose the insertion section 2a of endoscope; For example 4 serpentine pipes that are used to dispose serpentine pipe 4 run through patchhole 32a; And supplying for example 4 bending operation lines that bending operation line 5 runs through insertion to run through patchhole 32b, said bending operation line 5 runs through in the hole that is inserted in the long axis direction that serpentine pipe 4 had and from the front end of serpentine pipe 4 to be given prominence to.
The internal diameter size that patchhole 31 is run through in endoscope forms the predetermined greatly size of outside dimension than the insertion section 2a of endoscope 2.4 serpentine pipes run through patchhole 32a and bending operation line and run through patchhole 32b and be set to run through the patchhole 31 more outer Zhou Fangxiang outsides than endoscope, and the central shaft that runs through patchhole 31 with respect to endoscope is with for example 90 degree arranged spaced.
Bending operation line 5 runs through and is inserted in the serpentine pipe 4, can prevent that thus bending operation line 5 from running through the parts that are inserted in the serpentine pipe 4 and directly contacting with the 3a of pipe portion.
As shown in Figure 1, on the ratio front end of the 3a of pipe portion precalculated position, be provided with the canal curvature portion 33 of predetermined length near side on hand.As shown in Figure 3, canal curvature portion 33 forms following structure: run through a plurality of square holes 34 of the for example rectangular shape of patchhole 31 and be provided at predetermined intervals through being communicated with outside and endoscope in the precalculated position, thereby to the direction bending scheduled volume of expectation.In this embodiment, last direction in the drawings and with this on the relative lower direction of direction be provided with a plurality of square holes 34, left in the drawings to and with this left to relative right-hand to being provided with a plurality of square holes 34.
As shown in Figure 1, effective operating portion 3b is located at the cardinal extremity of the 3a of pipe portion integratedly.On effective operating portion 3b, rotate and be provided with freely: make first knob 35 as bending operation parts of canal curvature portion 33 to the crooked operation of above-below direction; Second knob 36 with the operation that makes canal curvature portion 33 direction bending to the left and right as the bending operation parts.
For example be fixed on the front end of canal curvature portion 33 in the leading section of the leading section of bending operation line 5 in the long axis direction hole of serpentine pipe 4 integratedly through bonding grade.Be fixed on the leading section 4a of the serpentine pipe 4 behind the front end of canal curvature portion 33 integratedly for the leading section of bending operation line 5, that kind as shown in Figure 4 is fixed on serpentine pipe integratedly through bonding grade and runs through in the patchhole 32a.
As shown in Figure 5, the base end part 4e of serpentine pipe 4 is fixed on the serpentine pipe as fixed part that constitutes the serpentine pipe support unit integratedly through scolding tin 40 grades and bears in the portion 6.
It is in the recess that bears hole 7a of cylindrical shell 7 that the serpentine pipe that is fixed with the base end part 4e of serpentine pipe 4 integratedly bears the fixed part portion of bearing that portion 6 is provided in as the barrel shape of serpentine pipe support unit.
Bearing in the 7a of hole of the cylindrical shell 7 of this embodiment, be equipped with to serpentine pipe bear portion's 6 application of forces with the serpentine pipe support unit that supports this serpentine pipe and bear portion 6 promptly as the compression helical spring 8 of force application part.
Constituting being equivalent to bear be formed with on the sidewall 7b of bottom of hole 7a and supplying the operating line that bending operation line 5 runs through insertion to use hole 7c of cylindrical shell 7.Operating line is the through hole that is communicated with the outside of bearing hole 7a and cylindrical shell 7 with hole 7c, is formed on the major axis of cylindrical shell 7.
Serpentine pipe bears portion 6 and has large diameter part 6a and small diameter part 6b.Large diameter part 6a is provided in bearing in the 7a of hole of cylindrical shell 7 sliding freely.Compression helical spring 8 is arranged on the outer circumferential side of small diameter part 6b.On large diameter part 6a, be provided with the pore 6c that is used to insert the base end part 4e that disposes serpentine pipe 4.Bearing at serpentine pipe to be formed with on the major axis of portion 6 supplies the operating line that bending operation line 5 runs through insertion to use hole 6d.
In addition, as shown in Figure 6, the directed force F of compression helical spring 8 is considered the compression stress F1 that serpentine pipe 4 receives from bending operation line 5 and is set.
As shown in Figure 4, cylindrical shell 7 is fixed on the precalculated position of the dividing plate 37a that the operating portion main body 37 that constitutes effective operating portion 3b had through scolding tin 40 integratedly.
On the base end part of the dividing plate 37a of the base end side that is positioned at operating portion main body 37, be provided with a pair of belt wheel 38.Each belt wheel 38 forms following structure: be accompanied by the operation of the knob 35,36 that is located on the effective operating portion 3b and rotate.
The middle part of the middle part of above-below direction bending operation line 5ud, left and right directions bending operation line 5lr is fixed on each belt wheel 38 through for example scolding tin respectively integratedly.Bending operation line 5ud, 5lr run through and are inserted in the serpentine pipe 4c that is formed with bending section 39 and sets, or run through and be inserted in the serpentine pipe 4d that is equipped on the straight line roughly.
Next, the effect to trocar sheath 3 describes.
Trocar sheath 3 is through for example carrying out proper handling to first knob 35, thereby above-below direction bending operation line 5ud is pulled, lax, and canal curvature portion 33 is crooked to above-below direction.
So, move to arrow U direction or the arrow D direction of said Fig. 1 from the leading section 21 of the outstanding endoscope 2 of the front end of trocar sheath 3.And then, move to the case of bending that the fixed position keeps the above-below direction of canal curvature portion 33 through making first fixed knob (not shown) of being located at first knob 35.
On the other hand, trocar sheath 3 is through carrying out proper handling to second knob 36, thereby left and right directions bending operation line 5lr is pulled, lax, and canal curvature portion 33 direction to the left and right is crooked.
So, move to arrow L direction or arrow R direction from the leading section 21 of the outstanding endoscope 2 of the front end of trocar sheath 3.And then, move to the case of bending that the fixed position keeps the left and right directions of canal curvature portion 33 through making second fixed knob (not shown) of being located at second knob 36.
That is, through the canal curvature portion 33 of trocar sheath 3 being remained on the case of bending of expectation, thereby be maintained at the direction of expectation with stable status from the leading section 21 of the outstanding endoscope 2 of the front end of trocar sheath 3.
For example in the process of operation first knob 35, from serpentine pipe 4 being acted on compression stresses with near the bending section 39 above-below direction bending operation line 5ud that contact of serpentine pipe 4.And then; As shown in Figure 6; When the compression stress shown in the arrow F1 on acting on serpentine pipe 4 surpasses the directed force F of compression helical spring 8; The serpentine pipe that is set with the base end part 4e of serpentine pipe 4 bears bear hole 7a in the base end side that towards arrow g direction, promptly have belt wheel 38 of portion 6 at cylindrical shell 7, moves along the bearing of trend of bending operation line.
And then serpentine pipe bears the directed force F that portion 6 overcomes compression helical spring 8, moves to the position shown in the solid line from the position shown in the dotted line, and the compression stress that acts on the serpentine pipe 4 from above-below direction bending operation line 5ud thus is disengaged.Therefore, can prevent that serpentine pipe 4 is out of shape because of compression stress.
Then; Acting on from above-below direction bending operation line 5ud under compression stress F1 on the serpentine pipe 4 becomes than the little situation of the directed force F of compression helical spring 8; By the active force of compression helical spring 8, the serpentine pipe that is set with the base end part 4e of serpentine pipe 4 bears portion 6 and moves bearing in the 7a of hole of cylindrical shell 7 with the mode of the returning original position bearing of trend along the bending operation line.
In addition, in left and right directions bending operation line 5lr and serpentine pipe 4, too, omit explanation.
Like this, the serpentine pipe that is set with the base end part of bending operation line 5 bears portion 6 and is provided in bearing in the 7a of hole of cylindrical shell 7 with compression helical spring 8.Consequently; When the big compression stress of active force than compression helical spring 8 is arranged from 5 pairs of serpentine pipes of bending operation line 4 effect; The serpentine pipe in the 7a of hole of bearing that is configured in cylindrical shell 7 bears portion 6 and moves to base end side; The compression stress that acts on serpentine pipe 4 from bending operation line 5 is disengaged, and can prevent that serpentine pipe 4 is owing to the compression stress that receives from bending operation line 5 is out of shape.Thus, can obtain traction steadily in the long term based on bending operation line 5.
In addition; In the above-described embodiment, following structure is illustrated, promptly; Through above-mentioned serpentine pipe support unit is set, preventing to produce by making medical apparatus and instruments is that the canal curvature portion 33 crooked bending operation lines 5 of trocar sheath 3 are given the compression stress of serpentine pipe 4 and the unfavorable condition that causes.
But; The medical apparatus and instruments that is provided with above-mentioned serpentine pipe support unit is not limited to trocar sheath, also can be have make the crooked bending operation line of bending section with supply this operating line connect the serpentine pipe that inserts endoscope, or run through the treatment instrument that is inserted in the treatment instrument for endoscope passage.In addition, below, with reference to Fig. 7 and Fig. 8 the structure of treatment instrument with bending section is described.
Fig. 7 and Fig. 8 relate to other embodiments of the medical apparatus and instruments with bending section, and Fig. 7 is the figure that the structure as the treatment instrument of medical apparatus and instruments is described, and Fig. 8 is the cutaway view of the VIII-VIII line in Fig. 7.
As shown in Figure 7, treatment instrument 90 is imported in the body cavity via the treatment instrument passage that endoscope 2 is had.Treatment instrument 90 has insertion section 94, and insertion section 94 has backstopping assembly 91, bending section 92 and flexible pipe portion 93.94 cardinal extremity is connected with not shown operating portion in the insertion section.
The treatment instrument 90 of this embodiment is an electric knife, in backstopping assembly 91, is provided with backstop and bears portion 95.Being fixedly installed on this backstop integratedly as the cutter 96 of electrode bears in the portion 95.
Cardinal extremity at cutter 96 is connected with the electrode operating line 97 that constitutes with the mode that runs through the central part in the insertion insertion section 94.Around electrode operating line 97, be provided with operating line coating member 98.The leading section of operating line coating member 98 is fixedly installed on backstop and bears in the portion 95.
The leading section of each bending operation line 5p, 5q, 5r, 5s, 5t, 5u, 5v, 5w is fixedly installed on the preposition among these curved block 99a, 99b, 99c, 99d, the 99e.The base end part of bending operation line 5p, 5q, 5r, 5s, 5t, 5u, 5v, 5w is fixed on the not shown belt wheel of being located at operating portion.
Thus, obtained likewise preventing serpentine pipe 4p, 4q, 4r, 4s, 4t, 4u, 4v, 4w because the compression stress that receives from bending operation line 5p, 5q, 5r, 5s, 5t, 5u, 5v, 5w and deformed configurations with above-mentioned embodiment.
And, in above-mentioned embodiment, show with serpentine pipe bear portion 6 supporting for the serpentine pipe support unit that can move to belt wheel 38 directions by constituting with lower component: cylindrical shell 7; The serpentine pipe that bears the base end part 4e that is set with serpentine pipe 4 among the 7a of hole that is provided in this cylindrical shell 7 bears portion 6; And compression helical spring 8, but the serpentine pipe support unit is not limited to this structure, also can to shown in Figure 14, constitute like Fig. 9.
Fig. 9 to Figure 11 relates to other structure example of serpentine pipe support unit; Fig. 9 is the vertical view that the structure to the variation of serpentine pipe support unit describes; Figure 10 is the side view of Fig. 9 of describing of the structure to the serpentine pipe support unit, and Figure 11 is the figure that the variation to Fig. 9 and serpentine pipe support unit shown in Figure 10 describes.
Like Fig. 9 and shown in Figure 10, the serpentine pipe support unit of this embodiment is to be used for fixing the anchor 50 as the plate spring part 51 of force application part that has that serpentine pipe bears the 6A ' of portion is set.
It is cylindrical shape that serpentine pipe bears the 6A ' of portion, has the pore 6c that is used for fixing the base end part 4e that serpentine pipe 4 is set in front.Bearing at serpentine pipe to be formed with on the major axis of the 6A ' of portion supplies the operating line that bending operation line 5 runs through insertion to use hole 6d.Bear at serpentine pipe be provided with on the outer peripheral face of the 6A ' of portion fixing with all groove 6e.
On sliding part 53, be formed with the slotted hole 53a of the end difference 42a that is used to dispose staged Screw 42.Slotted hole 53a forms the length central axes with respect to anchor 50.
In this structure; 4 effects have the compression stress shown in the arrow F2 to serpentine pipe from above-below direction bending operation line 5ud; When this compression stress F2 surpassed the directed force F 3 of plate spring part 51, directed force F 3 that kind shown in arrow h that support 55 overcomes plate spring part 51 moved to base end side.
So the compression stress that acts on serpentine pipe 4 from above-below direction bending operation line 5ud is disengaged, prevent that serpentine pipe 4 is owing to compression stress is out of shape.That is, can access effect and the effect identical with above-mentioned embodiment.
And then; Under the compression stress F2 that acts on serpentine pipe 4 from the bending operation line 5ud situation littler than the directed force F of plate spring part 51 3, the serpentine pipe that is set with the base end part 4e of serpentine pipe 4 bears the 6A ' of portion and moves with the mode of returning original position by the directed force F 3 of plate spring part 51.
In addition, in this structure, serpentine pipe 4 is fixed on serpentine pipe bears on the 6A ' of portion, and this serpentine pipe is born on the holddown groove 54 that the 6A ' of portion is bonded on support 55.But, also can that kind shown in figure 11 directly utilize scolding tin 40 grades that serpentine pipe 4 is bonded on the support 55.
In this structure, the through hole 55a that supplies serpentine pipe 4 to run through insertion is set on support 55, form the base end part 4e that makes serpentine pipe 4 and give prominence to the state of scheduled volume, and utilize scolding tin 40 to engage from this through hole 55a.
Figure 12 and Figure 13 relate to other structure example of serpentine pipe support unit; Figure 12 is the vertical view that another other the structure to the serpentine pipe support unit describes, and Figure 13 is the side view of the X III-XIII line in Figure 12 that describes of the structure to the serpentine pipe support unit.
The serpentine pipe support unit of this structure is by constituting with lower component: it is sliding bearing parts 60 that Figure 12 and shown in Figure 13 being used for fixing are provided with the tabular slide unit that serpentine pipe bears the 6A ' of portion; With these sliding bearing parts 60 are supported is can the interim clip as fixed-bearing axis (clip) 70 that moves.
The outside dimension of protuberance 74 is the first diameter dimension d1.On flange part 71 and axial region 72, be formed with slit 75.Fixed part 73 is pressed into and is configured among the clip configuration recess 37b that is arranged on the dividing plate 37a.
Through releasing act on the protuberance 74 towards axial external force, thereby the axial region of clip 70 72 returns to original state with flange part 71.Promptly, the diameter dimension of protuberance 74 becomes the first diameter dimension d1 from the second diameter dimension d2.In addition, in this structure, protuberance 74 constitutes force application part.
Sliding bearing parts 60 are that the sliding bearing parts on being formed at dividing plate 37a are provided with the structure of sliding among the groove 37c freely.Sliding bearing parts 60 constitute has sliding part 61 and support 62.
On sliding part 61, be formed with the slotted hole 63 of the end difference 42a that is used to dispose staged Screw 42.Slotted hole 63 forms the length central axes with respect to sliding bearing parts 60.On the length central shaft of sliding part 61, be formed with ratchet (click) groove 64.
In this structure, sliding bearing parts 60 are pressed into state among first 65a of hole portion of these sliding bearing parts 60 with the protuberance 74 of clip 70 and are arranged on the sliding bearing parts and are provided with in the groove 37c in original state.
Under this is provided with state; For example serpentine pipe 4 is acted on the compression stress shown in the arrow F4 from above-below direction bending operation line 5ud; When this compression stress F4 increased, the inner peripheral surface of first 65a of hole portion overcame the active force that clip 70 has and the pressing force of pushing the outer peripheral face of protuberance 74 increases.
So the outside dimension that is in the protuberance 74 of the first diameter dimension d1 dwindles gradually, support 62 moves to base end side gradually.Thus, the compression stress that acts on serpentine pipe 4 from above-below direction bending operation line 5ud is disengaged, and can prevent that serpentine pipe 4 is owing to compression stress is out of shape.
Then; From above-below direction bending operation line 5ud serpentine pipe 4 is acted on compression stresses; When the compression stress shown in the arrow F4 further increases; Support 62 further moves to base end side, and the outside dimension of the protuberance of being pushed by the inner surface of first 65a of hole portion 74 is changed to the second diameter dimension d2, and protuberance 74 is pressed into through shifting chute 66 and is configured among second 65b of hole portion.Thus, the compression stress that acts on serpentine pipe 4 from above-below direction bending operation line 5ud is disengaged, and can prevent that serpentine pipe 4 is owing to compression stress is out of shape.
That is, in this structure, the protuberance 74 of the clip 70 that will constitute with the mode that diameter dimension changes is configured among the predetermined 65a of hole portion among a plurality of hole 65a of portion that sliding bearing parts 60 are had, 65b, the 65c.
And then; When the compression stress on being applied to serpentine pipe 4 increases; The 65a of portion moves to the 65b of hole portion from the hole thereby sliding bearing parts 60 move protuberance 74 in the sliding bearing parts are provided with groove 37c, can remove the compression stress that acts on serpentine pipe 4 from bending operation line 5 thus.That is,, can access effect and the effect identical with above-mentioned embodiment through having sliding bearing parts 60 and clip 70.
The protuberance 74 that also can on the precalculated position of dividing plate 37a, be provided with clip 70 in addition, is configured in the pick off that the situation among the 3rd 65c of hole portion detects.Thus, thus can grasp sliding bearing parts 60 moves to the final situation that moves the place and can carry out the replacing of serpentine pipe 4 etc. accurately period.And in this structure, the hole portion 65 that is formed at pawl slot 64 is three, but the quantity of hole portion 65 can suitably set, also can be more than three.
Figure 14 and Figure 15 relate to other structure of serpentine pipe support unit, and Figure 14 is the length direction cutaway view of the serpentine pipe support unit of another other structures, and Figure 15 is the figure when the serpentine pipe that base end side is observed Figure 14 bears portion.
Like Figure 14 and shown in Figure 15, the serpentine pipe support unit of this structure is by constituting with lower component: the serpentine pipe as fixed part bears the 6B ' of portion, and it has the fastening protuberance 83 as fastening portion; And bearing the cylindrical shell 7A ' of portion as fixed part, it has the groove that supporting this serpentine pipe in ladder property ground bears the 6B ' of portion.
It is cylindrical shape that serpentine pipe bears the 6B ' of portion, is provided with the pore 6c that is used for fixing the base end part 4e that serpentine pipe 4 is set at leading section.The base end part side of bearing the 6B ' of portion at serpentine pipe is formed with the hole portion 81 and intercommunicating pore portion 81 and outside a plurality of slits 82 of the base end part side strain that is used to make this serpentine pipe bear the 6B ' of portion.In addition, hole portion 81 is communicated with pore 6c.Through this slit 82 is set, the base end part side that serpentine pipe bears the 6B ' of portion constitutes can strain.
Serpentine pipe bears the 6B ' of portion has all shapes at the middle part of periphery fastening protuberance 83.The cross sectional shape semicircular in shape shape of fastening protuberance 83, snap in be configured in be formed on the cylindrical shell 7A after be in the shape of the letter V all grooves of shape of the cross sectional shape stated as card entry slot, promptly among V-shaped groove 85a, 85b, the 85c.
The outside dimension of apex portion that serpentine pipe bears the fastening protuberance 83 of the 6B ' of portion is φ D3.Through to fastening protuberance 83 effect towards axial external force, thereby the external diameter of fastening protuberance 83 is changed to path.
Particularly, can be deformed into diameter littler than the internal diameter size d4 that bears hole 7a for the outside dimension of fastening protuberance 83.Act on the axial external force on the fastening protuberance 83 through releasing, to return to original state by elastic force be φ D3 thereby serpentine pipe bears the outside dimension of apex portion of the fastening protuberance 83 of the 6B ' of portion.In addition, fastening protuberance 83 is a force application part in this structure.
Constituting being equivalent to bear be formed with on the sidewall 7b of bottom of hole 7a and supplying the operating line that bending operation line 5 runs through insertion to use hole 7c of cylindrical shell 7A '.Operating line is to be communicated with to bear hole 7a and outside through hole with hole 7c, is formed on the major axis of cylindrical shell 7A '.
In addition, in this structure, the fastening protuberance 83 that serpentine pipe bears the 6B ' of portion snaps in original state among the V-shaped groove 85c that is configured in cylindrical shell 7A '.
Under this snaps in configuration status; For example serpentine pipe 4 is acted on the compression stress shown in the arrow F5 from above-below direction bending operation line 5ud; When this compression stress F5 increases; The outer peripheral face of fastening protuberance 83 is pushed on the inclined plane of V-shaped groove 85c, and outside dimension is that the fastening protuberance 83 of φ D3 gradually becomes path thus, and serpentine pipe bears the 6B ' of portion and moves to base end side gradually.Thus, the compression stress that acts on serpentine pipe 4 from above-below direction bending operation line 5ud is disengaged, and can prevent that serpentine pipe 4 is owing to compression stress is out of shape.
Then; From above-below direction bending operation line 5ud serpentine pipe 4 is acted on compression stresses; When the compression stress shown in the arrow F5 further increases; Serpentine pipe bears the 6B ' of portion and further moves to base end side, and the outside dimension of the fastening protuberance of being pushed by the inclined plane of V-shaped groove 85c 83 becomes and the roughly the same size of internal diameter size d4 of bearing hole 7a, and serpentine pipe bears the 6B ' of portion and in bearing hole 7a, moves to base end side.Thus, the compression stress that acts on serpentine pipe 4 from above-below direction bending operation line 5ud is disengaged, and can prevent that serpentine pipe 4 is owing to compression stress is out of shape.
And then, when the compression stress shown in the arrow F5 further increases, bearing serpentine pipe in the 7a of hole and bear the 6B ' of portion and further move to base end side, fastening protuberance 83 snaps among the V-shaped groove 85b.Thus, the compression stress that acts on serpentine pipe 4 from above-below direction bending operation line 5ud is disengaged, and can prevent that serpentine pipe 4 is owing to compression stress is out of shape.
Promptly; In this structure; The fastening protuberance 83 that the serpentine pipe that the mode that changes with diameter dimension constitutes bears the 6B ' of portion moves in being formed at the V-shaped groove 85c that bears hole 7a, 85b, 85a successively, thus, can remove the compression stress that acts on serpentine pipe 4 from above-below direction bending operation line 5ud.
In addition, in this structure, the fixed part portion of bearing is formed cylindrical shell 7A ', but also can be that to be formed with the internal diameter size that fixed part bears portion be the body of the through hole of d4.And, in this structure, form the structure that is provided with three V-shaped grooves 85, but the quantity of V-shaped groove 85 can suitably set, also can be more than three.
In addition; Also can on the precalculated position of dividing plate 37a, be provided with serpentine pipe is born the pick off that the situation among the V-shaped groove 85a that the 6B ' of portion is configured in base end side detects; Thus; Can grasp serpentine pipe and bear the situation that the 6B ' of portion moves to final mobile place, thereby can carry out the replacing of serpentine pipe 4 etc. period accurately.
In addition, the present invention is not limited in above-mentioned embodiment, in the scope that does not break away from purport of the present invention, can implement various distortion.
Though with reference to the accompanying drawing preferred embodiments of the present invention have been disclosed for illustrative; But it will be appreciated that the present invention is not limited to above-mentioned accurate embodiment; Those skilled in the art can carry out various changes and modification to this under the situation of spirit of the present invention that does not break away from the accompanying claims qualification or scope.
Claims (12)
1. medical apparatus and instruments, said medical apparatus and instruments has with lower component:
Be located at the bending section of the front end of flexible pipe;
Operating portion, it is connected setting with the cardinal extremity of said flexible pipe, and has the bending operation parts that said bending section carried out bending operation;
Bending operation line, its bending operation through said bending operation parts are pulled, relax;
Serpentine pipe, said bending operation line inserts in this serpentine pipe, and the front end of this serpentine pipe is fixedly installed on said bending section side, and cardinal extremity is provided in the said operating portion; And
The serpentine pipe support unit, it has force application part, with the supporting of the base end part of said serpentine pipe for moving along the bearing of trend of said bending operation line,
Said serpentine pipe support unit has:
Fixed-bearing axis; It is fixed on the said operating portion integratedly and has the fastening portion as said force application part; The outside dimension of said fastening portion can be changed to first diameter dimension and diameter second diameter dimension littler than this first diameter dimension, and from the state of state strain to the first diameter dimension of second diameter dimension; And
The sliding bearing parts; It has sliding part and serpentine pipe fixed part; Said sliding part is provided on the said operating portion sliding freely; And said sliding part has pawl slot, and said pawl slot constitutes to have and supplies snapin part that said fastening portion snaps in and the moving part that supplies said fastening portion to move, and said serpentine pipe fixed part is used for the base end part of fixing said serpentine pipe directly or indirectly.
2. medical apparatus and instruments, said medical apparatus and instruments has with lower component:
Be located at the bending section of the front end of flexible pipe;
Operating portion, it is connected setting with the cardinal extremity of said flexible pipe, and has the bending operation parts that said bending section carried out bending operation;
Bending operation line, its bending operation through said bending operation parts are pulled, relax;
Serpentine pipe, said bending operation line inserts in this serpentine pipe, and the front end of this serpentine pipe is fixedly installed on said bending section side, and cardinal extremity is provided in the said operating portion; And
The serpentine pipe support unit, it has force application part, with the supporting of the base end part of said serpentine pipe for moving along the bearing of trend of said bending operation line,
Said serpentine pipe support unit has:
Fixed part; It is fixed on the base end part of said serpentine pipe integratedly and has the fastening portion as said force application part; The outside dimension of said fastening portion can be deformed into first diameter dimension and diameter second diameter dimension littler than this first diameter dimension, and from the state of state strain to the first diameter dimension of second diameter dimension; And
Fixed part bears portion, and it is fixedly set in said operating portion, and is equipped with and moves hole and a plurality of card entry slot, and said fixed part slides freely in said mobile hole, and the said fastening portion of said this fixed part of card entry slot confession snaps in.
3. medical apparatus and instruments according to claim 1 and 2, wherein,
Said serpentine pipe support unit also has:
Fixed part, it is fixed on the base end part of said serpentine pipe; And
Fixed part bears portion, and it is fixedly set in said operating portion and has recess, and said fixed part is provided in this recess sliding freely.
4. medical apparatus and instruments according to claim 3 is characterized in that,
Said force application part is a compression helical spring, and said compression helical spring has and bears said fixed part in the said recess of portion to the active force of the preceding extreme direction application of force of said operating portion to being configured in said fixed part.
5. medical apparatus and instruments according to claim 1 and 2, wherein,
Said serpentine pipe support unit is the anchor that is fixedly set in said operating portion,
Said anchor also has:
Be fixed in the installation portion of said operating portion; And
The serpentine pipe fixed part that is used for fixing the base end part of said serpentine pipe.
6. medical apparatus and instruments according to claim 5 is characterized in that,
Said force application part is a spring portion, and said spring portion has the active force of said serpentine pipe fixed part to the preceding extreme direction application of force of said operating portion.
7. medical apparatus and instruments according to claim 5 is characterized in that,
Said serpentine pipe has the fixed part of the base end part that is fixed on this serpentine pipe, and this fixed part is fixed on the said serpentine pipe fixed part.
8. medical apparatus and instruments according to claim 5 is characterized in that,
The base end part of said serpentine pipe is fixed on the said serpentine pipe fixed part.
9. endoscope overtube, it has with lower component:
Be located at the bending section of the front of flexible pipe;
Operating portion, it is connected setting with the cardinal extremity of said flexible pipe, and has the bending operation parts that said bending section carried out bending operation;
Bending operation line, its bending operation through said bending operation parts are pulled, relax;
Serpentine pipe, said bending operation line inserts in this serpentine pipe, and the front end of this serpentine pipe is fixedly installed on said bending section side, and cardinal extremity is provided in the said operating portion; And
The serpentine pipe support unit, it has force application part, with the supporting of the base end part of said serpentine pipe for moving along the bearing of trend of said bending operation line,
Said serpentine pipe support unit has:
Fixed-bearing axis; It is fixed on the said operating portion integratedly and has the fastening portion as said force application part; The outside dimension of said fastening portion can be changed to first diameter dimension and diameter second diameter dimension littler than this first diameter dimension, and from the state of state strain to the first diameter dimension of second diameter dimension; And
The sliding bearing parts; It has sliding part and serpentine pipe fixed part; Said sliding part is provided on the said operating portion sliding freely; And said sliding part has pawl slot, and said pawl slot constitutes to have and supplies snapin part that said fastening portion snaps in and the moving part that supplies said fastening portion to move, and said serpentine pipe fixed part is used for the base end part of fixing said serpentine pipe directly or indirectly.
10. endoscope overtube, it has with lower component:
Be located at the bending section of the front of flexible pipe;
Operating portion, it is connected setting with the cardinal extremity of said flexible pipe, and has the bending operation parts that said bending section carried out bending operation;
Bending operation line, its bending operation through said bending operation parts are pulled, relax;
Serpentine pipe, said bending operation line inserts in this serpentine pipe, and the front end of this serpentine pipe is fixedly installed on said bending section side, and cardinal extremity is provided in the said operating portion; And
The serpentine pipe support unit, it has force application part, with the supporting of the base end part of said serpentine pipe for moving along the bearing of trend of said bending operation line,
Said serpentine pipe support unit has:
Fixed part; It is fixed on the base end part of said serpentine pipe integratedly and has the fastening portion as said force application part; The outside dimension of said fastening portion can be deformed into first diameter dimension and diameter second diameter dimension littler than this first diameter dimension, and from the state of state strain to the first diameter dimension of second diameter dimension; And
Fixed part bears portion, and it is fixedly set in said operating portion, and is equipped with and moves hole and a plurality of card entry slot, and said fixed part slides freely in said mobile hole, and the said fastening portion of said this fixed part of card entry slot confession snaps in.
11. an endoscope apparatus, said endoscope apparatus are at endoscope, endoscope overtube and run through and have at least one in the treatment instrument that is inserted in the endoscope with lower component:
Be located at the bending section of the front of flexible pipe;
Operating portion, it is connected setting with the cardinal extremity of said flexible pipe, and has the bending operation parts that said bending section carried out bending operation;
Bending operation line, its bending operation through said bending operation parts are pulled, relax;
Serpentine pipe, said bending operation line inserts in this serpentine pipe, and the front end of this serpentine pipe is fixedly installed on said bending section side, and cardinal extremity is provided in the said operating portion; And
The serpentine pipe support unit, it has force application part, with the supporting of the base end part of said serpentine pipe for moving along the bearing of trend of said bending operation line,
Said serpentine pipe support unit has:
Fixed-bearing axis; It is fixed on the said operating portion integratedly and has the fastening portion as said force application part; The outside dimension of said fastening portion can be changed to first diameter dimension and diameter second diameter dimension littler than this first diameter dimension, and from the state of state strain to the first diameter dimension of second diameter dimension; And
The sliding bearing parts; It has sliding part and serpentine pipe fixed part; Said sliding part is provided on the said operating portion sliding freely; And said sliding part has pawl slot, and said pawl slot constitutes to have and supplies snapin part that said fastening portion snaps in and the moving part that supplies said fastening portion to move, and said serpentine pipe fixed part is used for the base end part of fixing said serpentine pipe directly or indirectly.
12. an endoscope apparatus, said endoscope apparatus are at endoscope, endoscope overtube and run through and have at least one in the treatment instrument that is inserted in the endoscope with lower component:
Be located at the bending section of the front of flexible pipe;
Operating portion, it is connected setting with the cardinal extremity of said flexible pipe, and has the bending operation parts that said bending section carried out bending operation;
Bending operation line, its bending operation through said bending operation parts are pulled, relax;
Serpentine pipe, said bending operation line inserts in this serpentine pipe, and the front end of this serpentine pipe is fixedly installed on said bending section side, and cardinal extremity is provided in the said operating portion; And
The serpentine pipe support unit, it has force application part, with the supporting of the base end part of said serpentine pipe for moving along the bearing of trend of said bending operation line,
Said serpentine pipe support unit has:
Fixed part; It is fixed on the base end part of said serpentine pipe integratedly and has the fastening portion as said force application part; The outside dimension of said fastening portion can be deformed into first diameter dimension and diameter second diameter dimension littler than this first diameter dimension, and from the state of state strain to the first diameter dimension of second diameter dimension; And
Fixed part bears portion, and it is fixedly set in said operating portion, and is equipped with and moves hole and a plurality of card entry slot, and said fixed part slides freely in said mobile hole, and the said fastening portion of said this fixed part of card entry slot confession snaps in.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007312875 | 2007-12-03 | ||
| JP2007-312875 | 2007-12-03 | ||
| JP2007312875 | 2007-12-03 | ||
| JP2008-002506 | 2008-01-09 | ||
| JP2008002506A JP5144282B2 (en) | 2007-12-03 | 2008-01-09 | Medical instruments |
| JP2008002506 | 2008-01-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101449956A CN101449956A (en) | 2009-06-10 |
| CN101449956B true CN101449956B (en) | 2012-10-10 |
Family
ID=40732572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101781648A Expired - Fee Related CN101449956B (en) | 2007-12-03 | 2008-11-25 | Medical appliance, endoscope overtube, and endoscope apparatus |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5144282B2 (en) |
| CN (1) | CN101449956B (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102469911B (en) | 2010-01-29 | 2014-09-10 | 奥林巴斯医疗株式会社 | Insertion instrument and endoscope |
| JP5675223B2 (en) * | 2010-08-31 | 2015-02-25 | 富士フイルム株式会社 | Endoscope and hardness adjustment device |
| JP5222919B2 (en) * | 2010-10-01 | 2013-06-26 | 富士フイルム株式会社 | Endoscope |
| WO2012070570A1 (en) * | 2010-11-25 | 2012-05-31 | オリンパスメディカルシステムズ株式会社 | Balloon-equipped catheter having variable stiffness insertion section, and endoscope with second bendable section |
| JP2012231886A (en) * | 2011-04-28 | 2012-11-29 | Olympus Corp | Flexible tube part of endoscope and endoscope having the flexible tube part |
| CN104219987B (en) | 2012-03-23 | 2016-10-26 | 奥林巴斯株式会社 | Insertion apparatus |
| CN104023617B (en) * | 2012-05-11 | 2016-05-18 | 奥林巴斯株式会社 | Flexible tube for endoscope and endoscope |
| JP6177021B2 (en) * | 2013-06-20 | 2017-08-09 | オリンパス株式会社 | Endoscope |
| CN103431829B (en) * | 2013-08-20 | 2016-06-08 | 姜泊 | The bending controlling organization of a kind of medical endoscope |
| CN106061352B (en) * | 2014-03-25 | 2018-04-13 | 奥林巴斯株式会社 | Endoscope |
| CN106175652B (en) * | 2015-05-27 | 2020-06-26 | 富士胶片株式会社 | Endoscope and wire guide fixing device |
| CN105342539A (en) * | 2015-11-12 | 2016-02-24 | 珠海普生医疗科技有限公司 | Endoscope bend tube |
| JP6261835B1 (en) * | 2016-05-31 | 2018-01-17 | オリンパス株式会社 | Endoscope flexible tube |
| WO2018006386A1 (en) * | 2016-07-08 | 2018-01-11 | 深圳市先赞科技有限公司 | Endoscope insert assembly using equidistant spring and supporting component |
| CN108209846A (en) * | 2016-12-09 | 2018-06-29 | 深圳市先赞科技有限公司 | A kind of wireless control handle structure on endoscope |
| WO2019150627A1 (en) * | 2018-02-05 | 2019-08-08 | オリンパス株式会社 | Endoscope |
| CN110123246A (en) * | 2019-06-06 | 2019-08-16 | 深圳市先赞科技有限公司 | Endoscope |
| TWI762812B (en) * | 2019-08-30 | 2022-05-01 | 新視電科技有限公司 | Endoscope and endoscope equipment and positioning method of endoscope |
| CN113545728A (en) * | 2021-07-20 | 2021-10-26 | 苏州朗开医疗技术有限公司 | Sheath pipe capable of being bent for multiple times |
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|---|---|---|---|---|
| EP0165718A2 (en) * | 1984-05-22 | 1985-12-27 | Pilkington Medical Systems Limited (formely Minvade Limited) | Endoscopes |
| US4762118A (en) * | 1987-07-28 | 1988-08-09 | Welch Allyn, Inc. | Self-adjusting steering mechanism for borescope, endoscope, or guide tube |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070232858A1 (en) * | 2006-03-31 | 2007-10-04 | Boston Scientific Scimed, Inc. | Steering system tension control devices |
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- 2008-01-09 JP JP2008002506A patent/JP5144282B2/en not_active Expired - Fee Related
- 2008-11-25 CN CN2008101781648A patent/CN101449956B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0165718A2 (en) * | 1984-05-22 | 1985-12-27 | Pilkington Medical Systems Limited (formely Minvade Limited) | Endoscopes |
| US4762118A (en) * | 1987-07-28 | 1988-08-09 | Welch Allyn, Inc. | Self-adjusting steering mechanism for borescope, endoscope, or guide tube |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2009153959A (en) | 2009-07-16 |
| CN101449956A (en) | 2009-06-10 |
| JP5144282B2 (en) | 2013-02-13 |
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