CN209252798U - The multisection type swan neck system and endoscope of endoscope - Google Patents

Abstract

The utility model provides the multisection type swan neck system and endoscope of a kind of endoscope, the device includes: sequentially connected controllable bending tune, passive bending section and hard segment, component is peeped in one end direct or indirect connection of the controllable bending tune, the passive bending section includes the first pigtail, second pigtail and third pigtail, first pigtail and third pigtail are the helix tube that tube wall is equipped with spiral helicine first gap, second pigtail is the helix tube that tube wall is equipped with spiral helicine second gap, second gap has raised gap portion, buckling groove is formed with the tube wall part in the raised gap portion two sides and is embedded in the buckling parts of buckling groove, the utility model passes through the formation of buckling parts and buckling groove, each section that the second helix tube can be prevented or mitigated may occur when being turned It is radially enlarged, reduce situations such as, thus avoid second helix tube each section rotation alignment reduction so that rotation can effectively transmit.

Description

The multisection type swan neck system and endoscope of endoscope

Technical field

The utility model relates to the multisection type swan neck systems of medical instruments field more particularly to a kind of endoscope to peep with interior Mirror.

Background technique

With the development of science and technology, endoscope has been widely used in medical field, it is in scrutineer's body One of the important tool of portion's organ.So far from discovery in 1806, the development experience of endoscope following four stage: hard pipe type is peeped Mirror, half can bend the stages such as formula endoscope, fibrescope, ultrasound and fujinon electronic video endoscope.Now, the type of endoscope is broadly divided into Hard pipe type endoscope and hose type endoscope.Hard pipe type endoscope intensity is high, and insertion property is good, but is easy to stab inner wall, and Since camera lens can not rotate, thus the relatively unambiguous operation of some lesions positions can only be done.It is indefinite for some lesions positions Operation, need continuous adjustment direction to observe, therefore, it is necessary to use soft endoscope.

Existing the swan neck system of multisection type can be used in soft endoscope in the related technology, wherein different pipe sections Curvature can be different, such as may include controllable bending tune, passive bending section and hard segment.The bending of existing multisection type In pipe device, helix tube can be used as wherein the longer passive bending section of a segment length, the curvature of helix tube are higher.

However, rotation alignment when helix tube rotates is poor, it is difficult to ensure that rotation can be transmitted effectively, it may Bring operation difficulty it is larger, rotation control accuracy it is bad the problems such as.

Utility model content

The utility model provides the multisection type swan neck system and endoscope of a kind of endoscope, to solve helix tube rotation The poor problem of alignment.

It is according to the present utility model in a first aspect, providing a kind of multisection type swan neck system of endoscope, comprising: successively Controllable bending tune, passive bending section and the hard segment of connection, the one of the disconnected passive bending section of the controllable bending tune Component is peeped in the direct or indirect connection of end, the passive bending section includes sequentially connected first pigtail, the second helix tube Section and third pigtail, first pigtail and the third pigtail are that tube wall is equipped with spiral helicine first gap Helix tube, the second passive bending section is the helix tube that tube wall is equipped with spiral helicine second gap, second gap tool There is raised gap portion, buckling groove is formed with the tube wall part in the raised gap portion two sides and is embedded in the fastening of the buckling groove Portion.

Optionally, the length of first pigtail and the third pigtail is respectively less than second helix tube Section.

Optionally, the first gap and the lead in second gap, diameter are all the same.

Optionally, at least partly pipeline section be it is molding and being cut to same root metal tube, it is described at least partly Pipeline section includes the controllable bending tune and the passive bending section.

Optionally, described is that N number of tube body is in turn connected to form, and the first end of the tube body is formed with the first connection knot Structure, the second end of the tube body are formed with the second connection structure；Two adjacent tube bodies by corresponding first connection structure with The connection of second connection structure.

Optionally, the controllable bending tune includes sequentially connected first segmentation and the second segmentation, and first segmentation is What M tube body in N number of tube body was in turn connected to form, second segmentation be K tube body in N number of tube body successively What connection was formed, the curvature of at least partly described second segmentation is less than the curvature of first segmentation.

Optionally, the variation of curvature is generated by the variation of corresponding position tube length in the controllable bending tune 's.

Optionally, first connection structure include the first arc groove, the limit that is fixed in first arc groove Portion, and the rounded portions of the inner wall of first arc groove are used to form, second connection structure includes the first arc sections；

First arc sections of the tube body can match the first arc groove of insertion adjacent tubes, to hook circle therein First arc sections in portion, the tube body can be rotated along the first embedded arc groove, so that between two adjacent tube bodies Angle can change within the scope of preset first angle；

The head ends of first arc sections and end are located at the same side of its reference planes, and the reference planes are described the Plane where the axle center of one arc sections and the axle center of the affiliated tube body of the first arc sections are common.

Optionally, first connection structure further includes the second arc groove on the outside of first arc sections, described Second connection structure further includes the second arc sections on the outside of first arc groove；

Second arc sections of the tube body can match the second arc groove of insertion adjacent tubes, the second circle of the tube body Arc portion can be rotated along the second embedded arc groove, so that the angle between two adjacent tube bodies can be preset second Variation in angular range；The axle center of second arc sections is the axle center of first arc sections；

The first angle range is among the second angle range.

Second aspect according to the present utility model provides a kind of endoscope, including first aspect and its optinal plan relate to And endoscope multisection type swan neck system, set on controllable bending tune one end it is described in peep component and control unit, institute It states control unit and connects the controllable bending tune, to control the controllable bending tune bending.

Optionally, the control unit includes the draught line connecting with the controllable bending tune.

Optionally, the endoscope further includes control handle, and the control handle setting is not connected in the hard segment One end of the passive bending section.

The multisection type swan neck system and endoscope of endoscope provided by the utility model, due to the second of the second helix tube Gap has raised gap portion, which can form buckling groove and insertion in the tube wall part of raised gap portion two sides The buckling parts for buckling into slot, in turn, the utility model pass through the formation of buckling parts and buckling groove, can prevent or mitigate the second spiral shell Each section of coil may occur when being turned it is radially enlarged, reduce situations such as, to avoid each portion of the second helix tube Divide the reduction of rotation alignment, so that rotation can be effectively passed, in turn, the utility model can be beneficial to reduce endoscope Operation difficulty improves the accuracy of rotation control.

Newly-designed tube body also is used in active bending section in the utility model optinal plan, since existing active is curved Tune is prone to disconnect when being bent to a certain extent or encountering object, that is, disconnects；And the utility model will be above new in general It, can be by the structure type of multisection type and the active bending section organically when the active bending section of design is applied to the device of multisection type In conjunction with to not only meet the requirement of rotation alignment but also be not easy to disconnect.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property It puts, is also possible to obtain other drawings based on these drawings.

Fig. 1 is the structural schematic diagram one of the multisection type swan neck system of endoscope in an embodiment of the present invention；

Fig. 2 is the structural schematic diagram in the first gap in an embodiment of the present invention；

Fig. 3 is the structural schematic diagram one in the second gap in an embodiment of the present invention；

Fig. 4 is the structural schematic diagram two in the second gap in an embodiment of the present invention；

Fig. 5 is the structural schematic diagram two of the multisection type swan neck system of endoscope in an embodiment of the present invention；

Fig. 6 is the partial enlargement diagram of a-quadrant in Fig. 5；

Fig. 7 is the partial enlargement diagram of B area in Fig. 5；

Fig. 8 is the structural schematic diagram of controllable bending tune in an embodiment of the present invention；

Fig. 9 is the structural schematic diagram one of an embodiment of the present invention middle tube body；

Figure 10 is the structural schematic diagram two of an embodiment of the present invention middle tube body；

Figure 11 a is connection and the rotation schematic diagram one of adjacent pipe sections in an embodiment of the present invention；

Figure 11 b is connection and the rotation schematic diagram two of adjacent pipe sections in one embodiment of the invention；

Figure 11 c is connection and the rotation schematic diagram three of adjacent pipe sections in one embodiment of the invention；；

Figure 12 is the structural schematic diagram three of an embodiment of the present invention middle tube body.

Description of symbols:

1- controllable bending tune；

101- first is segmented；

102- second is segmented；

11- tube body；

The first arc sections of 12-；

The first arc groove of 13-；

14- rounded portions；

15- limiting section；

16- notch；

The second arc sections of 17-；

The second arc groove of 18-；

The passive bending section of 2- first；

The passive bending section of 3- second；

31- buckling groove；

32- buckling parts；

The passive bending section of 4- third；

5- hard segment；

The first gap 6-；

The second gap 7-；

The first axle center L1-；

The second axle center L2-.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

The specification and claims of the utility model and term " first ", " second ", " third " in above-mentioned attached drawing (if present)s such as " the 4 " are to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It answers The data that the understanding uses in this way are interchangeable under appropriate circumstances, so that the embodiments of the present invention described herein can Implemented with the sequence other than those of illustrating or describing herein.In addition, term " includes " and " having " and they Any deformation, it is intended that cover it is non-exclusive include, for example, containing the process, method of a series of steps or units, being System, product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include be not clearly listed or For the intrinsic other step or units of these process, methods, product or equipment.

The technical solution of the utility model is described in detail with specifically embodiment below.These are specific below Embodiment can be combined with each other, and the same or similar concept or process may be repeated no more in some embodiments.

Fig. 1 is the structural schematic diagram one of the multisection type swan neck system of endoscope in an embodiment of the present invention.

Referring to FIG. 1, the multisection type swan neck system of endoscope, comprising: sequentially connected controllable bending tune 1, passive curved Tune and hard segment 5 peep group in one end direct or indirect connection for being not connected with the passive bending section of the controllable bending tune 1 Part (not shown).

The difference of controllable bending tune 1, passive bending section and hard segment 5 can be regarded as:

Controllable bending tune 1 can have flexibility, and then the bending of active occurs under control, for the direct right of bending control As, passive bending section is then passively to follow bending under controllable bending tune 1 actively curved situation, un-flexed control it is straight Connect object.

Hard segment 5 is not then usually bent or is susceptible to curved.In turn, the integrally bending ability of passive bending section It is smaller than controllable bending tune 1.

Meanwhile controllable bending tune 1 connects interior one end for peeping component, also is understood as to enter in operation, checking process The one end peeped in carrying out into the human body.

Wherein, the passive bending section includes sequentially connected first pigtail 2, the second pigtail 3 and third spiral shell Coil section 4.

Fig. 2 is the structural schematic diagram in the first gap in an embodiment of the present invention.

Referring to FIG. 2, first pigtail 2 is that tube wall is equipped with spiral helicine first with the third pigtail 4 The helix tube in gap 6.

The present embodiment is described to rotate alignment, it can be understood as pipe each section when axially rotating around it rotates synchronously Ability, or the ability of transmitting rotation, it is existing in the related technology, if passive bending section is all made of spiral helicine first seam Gap, it will cause rotation be converted into part helix in helix tube it is radially enlarged, reduce or positional shift, and can not or it is difficult With further transmitting rotation, that is, rotation alignment is poor.So this embodiment introduces the second spirals for being equipped with the second gap 7 Pipe.

Fig. 3 is the structural schematic diagram one in the second gap in an embodiment of the present invention；Fig. 4 is that the utility model one is implemented The structural schematic diagram two in the second gap in example.

Fig. 3 and Fig. 4 are please referred to, second pigtail 3 is the helix tube that tube wall is equipped with spiral helicine second gap 7, Second gap 7 has raised gap portion 71, forms buckling groove 31 with the tube wall part in 71 two sides of raised gap portion With the buckling parts 32 for being embedded in the buckling groove 31.

Wherein, the length of the described first passive bending section 2 and the passive bending section 4 of the third can be respectively less than described second Passive bending section 3.First gap 6 may each be identical with the lead in second gap 7, diameter.

By the formation of buckling parts 32 and buckling groove 31, it can be achieved that restriction between adjacent spiral, avoids or mitigate it Situations such as scaling or positional shift of radial direction occurs, and then each section of the second helix tube 3 can be prevented or mitigated when being turned May occur it is radially enlarged, reduce, positional shift situations such as, thus avoid 3 each section of the second helix tube rotate alignment Reduction so that rotation can effectively be passed.

Soft endoscope, such as diameter are less than the endoscope of 6mm, in the application of uropoiesis and the upper respiratory tract, to passive Bending part had not only required certain flexibility but also had been not intended to too soft, i.e., curvature need to be met the requirements, because in catheterization procedure If the too soft difficulty and operating time that can increase doctor's insertion；In addition, the soft lens due to such as diameter less than 6mm is difficult to accomplish The bending of four direction, the generally bending of both direction.Can be reversed when doctor needs different bending directions mirror body with Reach required direction, so, in order to guarantee the accuracy of rotation, to rotation alignment, more stringent requirements are proposed.

As it can be seen that can be beneficial to reduce the operation difficulty of endoscope after the present embodiment is to rotation alignment is promoted, rotation is improved The accuracy of control saves operating time.In addition, the structure of multisection type can not increase the outer diameter of Disposable cover for inserted part, surface It is smooth, it is easier insertion.

Meanwhile the present embodiment or part thereof optinal plan can also have capacity usage ratio height, environmental pollution small, save the cost The advantages that.

Fig. 3 is the structural schematic diagram one in the second gap in an embodiment of the present invention；Fig. 4 is that the utility model one is implemented The structural schematic diagram two in the second gap in example.

Fig. 3 and Fig. 4 are please referred to, the second gap 7 passes through the setting in raised gap portion 71, can form buckling groove 31 and buckling parts 32, reach guarantee rotation alignment, so that the effect that rotation can be effectively passed.In addition, the ruler of its 31 opening of buckling groove The position of the very little at least partly non-opening for being smaller than buckling groove 31, so that buckling parts 32 is after being snapped into buckling groove 32, no It is easy to be pullled out.It, also can be because of buckling groove 31 and buckling parts meanwhile even if the size of opening is not less than other non-openings Guarantee rotation alignment is played in 32 formation itself, so that the effect that rotation can be effectively passed, that is, it can also be practical for this A novel optional embodiment.

In specific implementation process, the second gap 7, buckling groove 31 can be with buckling parts 32 to be cut on metal tube and is formed , meanwhile, the present embodiment is also not excluded for can be the scheme being assembled after processing respectively.

Referring to FIG. 4, in one of embodiment, the second gap 7 can have multiple, and multiple second gaps 7 are along axis It is arranged to interval, i.e., the seam of multiple spirals separated, in turn, by the second gap 7 along axial length, distribution mode etc. Configuration can produce the Different Effects to rotation alignment and curvature, and then rotate in transmitting, and generate between bending Adaptability is coordinated, to meet the needs of various.Further, according to second when the variation of the curvature of the second passive bending section 3 It is generated between the length in gap 7 and the second adjacent gap 7 along axial length interval.In one of embodiment, In device provided by the present embodiment, at least partly pipeline section is molding and cutting to same root metal tube, described At least partly pipeline section includes the controllable bending tune 1 and the passive bending section, and in specific implementation process, at least partly pipeline section is also Hard segment can also be may not include for example including hard segment.As it can be seen that the present embodiment can accomplish controllable bending tune 1 and passive bending The integrated molding of section, which can such as stainless steel metal pipe.

In contrast, existing in the related technology usually to make controllable bending curved tube and passive swan-neck respectively, meanwhile, quilt Dynamic swan-neck and controllable bending curved tube are often unlike material, and passive swan-neck is also often the netted tubing with metal core.It will cause Packaging technology is complicated, and the netted tubing cost with metal core is higher, is not easy to the problems such as realizing lesser diameter.The present embodiment In the case where being not excluded for the technique, also proposes and same root metal tube is cut and molding in alternate embodiments Means, can have the effect of it is at low cost, convenient for the positive of assembly.Meanwhile in the part lower field of the demand to bending ability Under scape, such as the urinary tract and gastral application scenarios, not only the passive swan-neck that the means generate can be full with controllable bending curved tube Foot bending demand, can also make pipeline section be more convenient for generating stress in vivo, in turn, can be more convenient for because it is with certain hardness Movement of the pipeline section under stress.

Fig. 5 is the structural schematic diagram two of the multisection type swan neck system of endoscope in an embodiment of the present invention；Fig. 6 is The partial enlargement diagram of a-quadrant in Fig. 5；Fig. 7 is the partial enlargement diagram of B area in Fig. 5.

In one of embodiment, the hard segment 5 can be steel pipe, i.e., it can not have curvature or curvature Very little, the Integral bending curvature of the second passive bending section 3 can be regarded as less than the controllable bending tune 1, described first passive curved Tune 2 and the passive bending section 4 of the third.Curvature therein, it can be understood as the bending ability of pipeline section, it will be understood that are as follows: Institute's energy the degree of bending is higher, and bending ability is stronger, and curvature is bigger.

Fig. 8 is the structural schematic diagram of controllable bending tune in an embodiment of the present invention.

Fig. 1, Fig. 5, Fig. 6 and Fig. 8 are please referred to, the controllable bending tune 1 is that N number of tube body 11 is in turn connected to form, described The first end of tube body 11 is formed with the first connection structure, and the second end of the tube body is formed with the second connection structure；Adjacent two A tube body 11 is connect by corresponding first connection structure with the second connection structure.It is described controllable in one of embodiment Bending section 1 includes sequentially connected first segmentation 101 and the second segmentation 102, and first segmentation 101 is in N number of tube body M tube body be in turn connected to form, second segmentation 102 is that K tube body in N number of tube body is in turn connected to form , the curvature of at least partly described second segmentation 102 is less than the curvature of first segmentation 101, or can be regarded as second The Integral bending curvature of segmentation 102 is less than the first segmentation 101.

N therein is greater than or equal to 4, and be greater than or equal to M and K's and, M can be greater than or equal to more than or equal to 2, K 2。

Fig. 9 is the structural schematic diagram one of an embodiment of the present invention middle tube body；Figure 10 is an embodiment of the present invention The structural schematic diagram two of middle tube body；Figure 11 a is connection and the rotation schematic diagram one of adjacent pipe sections in one embodiment of the invention；Figure 11b is connection and the rotation schematic diagram two of adjacent pipe sections in one embodiment of the invention；Figure 11 c is adjacent in one embodiment of the invention The connection of pipe fitting and rotation schematic diagram three.

Fig. 9 and Figure 11 a, Figure 11 b and Figure 11 c are please referred to, first connection structure is set including the first arc groove 13, fixation Limiting section 15 in first arc groove 13, and it is used to form the rounded portions 14 of the inner wall of first arc groove, institute Stating the second connection structure includes the first arc sections 12.

First arc sections 12 of the tube body 11 can match the first arc groove 13 of insertion adjacent tubes 11, to hook it In rounded portions 14, the first arc sections 12 of the tube body 11 can be rotated along the first embedded arc groove 13, so that phase Angle between two adjacent tube bodies 11 can change within the scope of preset first angle, the angle limitation of the first angle range The limit of the rotation position of first arc sections 12 can be realized by limiting section 15.

Rounded portions 14 can be connect by limiting section 15 with tube body 11, can also be connect by other interconnecting pieces with tube body 11, I.e. limiting section 15 can be set in the first arc sections 12 without connecting with rounded portions 14.

Meanwhile in one of embodiment, limiting section 15 can be provided only with one as shown in the figure, in turn, utilize one Limiting section 15 realizes the limit with anti-clockwise rotation position clockwise along two circumferential sides of the first arc groove 13 respectively, In his embodiment, the quantity of limiting section 15 can also be multiple, such as two limiting sections 15, can be respectively to the first arc sections 12 Clockwise rotated position is limited with anti-clockwise rotation position.

In addition, the inner wall or outer wall of the first arc sections 12 can be equipped with the matched limiting slot of limiting section, in turn, if limiting section And disconnected rounded portions 14, and be only raised gap portion in the inner wall or outer wall of the first arc groove 13, then using limiting section edge The movement of limiting slot limits to realize.

Fig. 9 and Figure 10 are please referred to, the head end of first arc sections 12 and end are located at the same side of its reference planes, institute State the common place in axle center of tube body 11 belonging to the axle center and first arc sections 12 that reference planes are first arc sections 12 Plane, wherein the axle center of first arc sections 12 can be regarded as the second axle center L2 as shown in the figure, the axle center of affiliated tube body 11 It can be regarded as the first axle center L1 as shown in the figure, reference planes are the plane where the second axle center L2 and the first axle center L1 common.

In one of embodiment, the arc angle of the first arc sections 12 can be greater than or equal to 270 degree.

The present embodiment can effectively catch on adjacent tube body 11, in turn, two tube bodies are being drawn by the first arc sections 12 When the power pulled, it can be not easy to disconnect.

Referring to FIG. 10, its further improvement that can be regarded as embodiment illustrated in fig. 9, in one of embodiment, institute Stating the first connection structure further includes the second arc groove 18 set on 12 outside of the first arc sections, and second connection structure is also The second arc sections 17 including being set to 13 outside of the first arc groove；

Second arc sections 17 of the tube body 11 can match the second arc groove 18 of insertion adjacent tubes 11, the tube body 11 the second arc sections 17 can be rotated along the second embedded arc groove 18, so that the angle between two adjacent tube bodies 11 It can change within the scope of preset second angle；The axle center of second arc sections 17 is the axis of first arc sections 12 The heart.

In turn, the size of the second arc groove 18, specially its arc length can be used for determining the rotation of the second arc sections 17 Position, and then can be used for limiting second angle range.In addition, position limiting structure can also be arranged separately to realize the limit of second angle range It is fixed.

In addition, the first arc groove 13 and the second arc groove 18 can be the groove body separated, i.e., the first arc groove 13 can wrap It containing two groove bodies, such as is limited portion 15 and is separated into two groove bodies, the second arc groove 18 can also be separated into two groove bodies.

Meanwhile first arc groove 13, the second arc groove 18, the first arc sections 12 and the second arc sections 17 and rounded portions 14 axle center is same axle center, in turn, is directed to two tube bodies 11, realizes each component in concentric circles around same axis Heart relative rotation.

In one of embodiment, Figure 11 a, Figure 11 b and Figure 11 c are please referred to, the first angle range is in described Among second angle range, by taking Figure 11 a, Figure 11 b and Figure 11 c as an example, tube body 11 up time of the tube body 11 on right side relative to left side When needle rotates, rotation position can be limited by the second arc groove 18 and the second arc sections 17, and the tube body 11 on right side is relative to left side Tube body 11 counterclockwise rotate when, rotation position can also be limited by the second arc groove 18 and the second arc sections 17.It in turn, can be real Two layers of protection of existing rotation position limits.

Figure 12 is the structural schematic diagram three of an embodiment of the present invention middle tube body.

Please refer to Figure 10 and Figure 12, it is seen then that the length of tube body 11 can be different, and in one of embodiment, be Realize that the curvature of at least partly described second segmentation 102 is less than the curvature of first segmentation 101, i.e., the second segmentation Curvature of the curvature of 102 at least partly section less than the first segmentation 101.In one way in which, in the K tube body At least partly length of the length of tube body greater than each tube body in the M tube body.In turn, it may make the second segmentation 102 Curvature of the curvature less than the first segmentation 101.

In specific implementation process, the curvature of the second segmentation 102 is along from one end close to the first segmentation 101 to close to first The direction of one end of passive bending section 2 becomes larger；Specifically curvature can be realized by the variation of K tube body middle tube body length Gradual change.As it can be seen that the variation of curvature is generated by the variation of corresponding position tube length in the controllable bending tune, For example, length is longer, the curvature of corresponding position is then smaller.

In other optional embodiments, first angle range and second angle range referred to above can also be passed through The variation for realizing curvature is set.

That is: as long as realizing the variation of curvature, the description range of the present embodiment is not departed from.

Meanwhile it is any other by tube body clamping or hinged, so that two tube bodies can be realized the structure of variable angle Form all without departing from the description of above first connection structure and the second connection structure, and is not limited to the mode of diagram.

For the coupling part of controllable bending tune 1 and the first passive bending section 2, connection pipe body may be provided with, the connecting tube The difference of body and other tube bodies 11 can be regarded as connection pipe body, and only wherein one end is equipped with the first connection structure or the second connection structure, To be connect with adjacent tube body 11.

In one of embodiment, tube body 11 can also be equipped with notch 16, can be set to the end of tube body 11, can also be set to Non- end can also be provided with notch 16 in end and non-end.Notch 16 passes through for draught line, in turn, by leading Lead is pullled, and angle change occurs between controllable adjacent tubes 11, and then is controlled controllable bending tune 1 and be bent.

Further, incorporated by reference to Fig. 5, Fig. 6 and Fig. 7, the notch 16 of tube body 11 can be symmetrically set in the edge in the axle center of tube body 11 The two sides of first direction, corresponding, the first connection structure of tube body 11 is two, be symmetrically set in the axle center of tube body 11 along second The two sides in direction, likewise, the second connection structure of tube body 11 is also two, be symmetrically set in the axle center of tube body 11 along second party To two sides, which can be perpendicular to second direction, first direction and second direction perpendicular to the axle center of tube body 11.

Meanwhile any control mode and structure type using traction line traffic control controlled deflection section 1 in the art, it can answer For the present embodiment, to reach the bending control of controllable bending tune 1.

In specific implementation process, the first connection structure, the second connection structure and notch 16 etc. be can be on metal tube Cutting and formed, i.e., each tube body 11 can be to cut on whole metal tube and be formed, and non assembled, meanwhile, this implementation Example is assembled after being also not excluded for can be processing respectively.

As it can be seen that each pipeline section and structure therein involved in the present embodiment, can be by cutting to whole metal tube It cuts and is formed, can have many advantages, such as that bending is sensitive, easily manufactured, manufacturing cost is low, easy to use.The metal tube can be Steel pipe.

As it can be seen that also newly-designed tube body has been used in active bending section in the present embodiment optinal plan, due to existing master Dynamic bending section is prone to disconnect when being bent to a certain extent or encountering object, that is, disconnects；And the present embodiment will more than It, can be organic by the structure type of multisection type and the active bending section when newly-designed active bending section is applied to the device of multisection type Ground combines, to not only meet the requirement of rotation alignment but also be not easy to disconnect.

The present embodiment additionally provides a kind of endoscope, the multisection type bending including the endoscope that above each optinal plan is related to Pipe device, set on controllable bending tune one end it is described in peep component and control unit, the control unit connects the controllable bending Tune, to control the controllable bending tune bending.

Wherein, inside peeping component can be for example including at least one camera lens, light source etc..

The control unit includes the draught line connecting with the controllable bending tune.

The endoscope further includes control handle, and the control handle, which is arranged, is not connected with the quilt in the hard segment One end of dynamic bending section.

In conclusion the multisection type swan neck system of endoscope provided in this embodiment, due to the second of the second helix tube Gap has raised gap portion, which can form buckling groove and insertion in the tube wall part of raised gap portion two sides The buckling parts for buckling into slot, in turn, the utility model pass through the formation of buckling parts and buckling groove, can prevent or mitigate the second spiral shell Each section of coil may occur when being turned it is radially enlarged, reduce situations such as, to avoid each portion of the second helix tube Divide the reduction of rotation alignment, so that rotation can be effectively passed, in turn, the utility model can be beneficial to reduce endoscope Operation difficulty improves the accuracy of rotation control.

Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new The range of each embodiment technical solution of type.

Claims (12)

1. a kind of multisection type swan neck system of endoscope, including sequentially connected controllable bending tune, passive bending section and hard Section, component is peeped in one end direct or indirect connection of the disconnected passive bending section of the controllable bending tune, feature exists In, the passive bending section include sequentially connected first pigtail, the second pigtail and third pigtail, described One pigtail and the third pigtail are the helix tube that tube wall is equipped with spiral helicine first gap, second helix tube Section is the helix tube that tube wall is equipped with spiral helicine second gap, and second gap has raised gap portion, in the protrusion The tube wall part of gap portion two sides forms buckling groove and the buckling parts for being embedded in the buckling groove.

2. the apparatus according to claim 1, which is characterized in that first pigtail and the third pigtail Length is respectively less than second pigtail.

3. the apparatus according to claim 1, which is characterized in that the lead in first gap and second gap, straight Diameter is all the same.

4. device according to any one of claims 1 to 3, which is characterized in that at least partly pipeline section is by same root Metal tube is cut and molding, and at least partly pipeline section includes the controllable bending tune and the passive bending section.

5. device according to any one of claims 1 to 3, which is characterized in that the controllable bending tune be N number of tube body successively What connection was formed, the first end of the tube body is formed with the first connection structure, and the second end of the tube body is formed with the second connection Structure；Two adjacent tube bodies are connect by corresponding first connection structure with the second connection structure.

6. the device according to claim 5, which is characterized in that the controllable bending tune includes sequentially connected first point Section and the second segmentation, first segmentation are that M tube body in N number of tube body is in turn connected to form, second segmentation It is that K tube body in N number of tube body is in turn connected to form, the curvature of at least partly described second segmentation is less than described the The curvature of one segmentation.

7. device according to claim 5, which is characterized in that the variation of curvature is by right in the controllable bending tune The variation of position tube length is answered to generate.

8. device according to claim 5, which is characterized in that first connection structure includes the first arc groove, fixation Limiting section in first arc groove, and the rounded portions of the inner wall of first arc groove are used to form, described Two connection structures include the first arc sections；

First arc sections of the tube body can match the first arc groove of insertion adjacent tubes, to hook rounded portions therein, First arc sections of the tube body can be rotated along the first embedded arc groove, so that the angle between two adjacent tube bodies It can change within the scope of preset first angle；

The head end of first arc sections and end are located at the same side of its reference planes, and the reference planes are first circle Plane where the axle center of arc portion and the axle center of the affiliated tube body of the first arc sections are common.

9. device according to claim 8, which is characterized in that first connection structure further includes being set to first circle The second arc groove on the outside of arc portion, second connection structure further include the second circular arc on the outside of first arc groove Portion；

Second arc sections of the tube body can match the second arc groove of insertion adjacent tubes, the second arc sections of the tube body It can be rotated along the second embedded arc groove, so that the angle between two adjacent tube bodies can be in preset second angle Variation in range, the axle center of second arc sections are the axle center of first arc sections；

The first angle range is among the second angle range.

10. a kind of endoscope, which is characterized in that the multisection type swan-neck including the described in any item endoscopes of claim 1 to 9 Device, set on controllable bending tune one end it is described in peep component and control unit, the control unit connects the controlled deflection Section, to control the controllable bending tune bending.

11. endoscope according to claim 10, which is characterized in that the control unit includes connecting with the controllable bending tune The draught line connect.

12. endoscope according to claim 10, which is characterized in that it further include control handle, the control handle setting In one end of the disconnected passive bending section of the hard segment.