DE102017102038B3 - ROPE COMPONENT AND ENDOSCOPE WITH AT LEAST ONE CABLE - Google Patents

Abstract

The invention relates to a cable guide component for an endoscope with at least one cable pull (109) for actuating a Endoskopkopfauslenkung. In Seilführungsbauteil (101) is a Seilzugführung the at least one cable pull (109) from the axially central guide to the spaced from the axial center axis leadership über.Die invention also relates to an endoscope, in which at least one cable pull (109) for actuating a Endoskopkopfauslenkung in the endoscope is axially centered.

Description

The present invention relates to a cable guide component for an endoscope with at least one cable for operating a Endoskopkopfauslenkung, and to an endoscope with at least one cable.

An endoscope is known, which has a control unit, an endoscope shaft, an endoscope head and an angled section. The bending section is e.g. arranged between the endoscope shaft and the endoscope head and serves to bend the endoscope head. For operating an endoscope head deflection in the endoscope, cables are used which are connected to the proximal side of the control unit by e.g. a joystick are operated.

These cables extend through the endoscope in the axial direction. The cables are stretched between a cable anchor point on the distal side and said joystick.

Over time, the tension of the cables in the endoscope may decrease. If, in an endoscope, the cables for controlling a bend section become loose, it may happen that the desired deflection movement is not achieved by the operation of the joystick.

A re-tensioning of the cables can then restore the desired ratio between the desired deflection movement and actually effected actuation of the joystick.

The situation becomes more difficult when the tension of several cables has decreased differently. This can e.g. occur when an endoscope is kept for a long time with the endoscope (endoscope tube) rolled up. Then it may be that the cables in the rolled-up endoscope shaft are loaded to different degrees, and show a decline in tension of varying degrees over time. In other words, a cable may have a different voltage change from the originally tensioned state than another (e.g., adjacent) cable. In such a case, a re-tensioning of the cables is very complicated.

It is the object of the present invention to take measures to improve a possible tensioning of cables in an endoscope.

The EP 0 165 718 A2 discloses an endoscope in which control cables for a bend portion are guided on a longitudinal axis of an insertion tube. The control cables go over by means of a branch block to a peripheral portion at the bend section. The branch block carries the control cables.

This object is achieved by a cable guide component with the features of claim 1. An alternative cable guide component is shown in claim 6. An endoscope is shown in claim 10. Advantageous developments are the subject of the dependent claims.

The invention thus relates to a cable guide component for an endoscope with at least one cable for operating a Endoskopkopfauslenkung. In the cable guide component, a cable guide of the at least one cable pull passes from the axially central guide to the guide spaced from the axial center axis.

With such a cable guide component can be effected at a suitable location along an endoscope, a transition from an axially central guide of cables to a spaced-apart from the axial center axis guide. Thus, an axially central arrangement of cables is applicable over a predetermined range in the endoscope. Axially arranged cables are advantageously subject to a very low voltage when the endoscope is rolled up.

The cable guide component may have a cable guide inner part, which has at least one cable guide channel for a cable on its outer peripheral surface, wherein the cable guide channel from a proximal axially central position of the cable guide inner part merges to a distal spaced from the axial center axis position of the cable guide inner part. Thus, the transition of the cable guide can be realized by the axially central guide to the distance from the axial center axis guide the cable in a specific component provided, which can be arranged at a suitable location in the endoscope.

In the cable guide component, the cable guide inner part can have an increasing outer diameter from the proximal side to the distal side. The cable guide channel may be open on the radially outer side. The cable guide component may further comprise a cable guide outer part. The cable guide outer part may have an interior, in which the cable guide inner part is insertable. The cable guide outer part may have a cable guide outer part axial guide element for a positive guidance of the cable guide inner part in the axial direction of the cable guide outer part. Furthermore, the cable guide inner part can have on its outer circumference a cable guide inner part axial guide element adapted to the shape of the cable guide outer part axial guide element. Thus, a cable guide member may be used in which the cable guide channel between the cable guide inner part and the cable guide outer part is arranged. The cable guide component has a construction which makes it possible to realize the transition of the axially central cable guide away from the axial central axis over a very short axial distance.

By suitably shaping the length of the cable guide member, the axial length needed in the endoscope for the cable guide to transition from the axially central guide to the guide of the cable remote from the axial center axis may be determined.

In addition, the Seilführungsaußenteil axial guide element may have a wall extending in the axial direction. The wall may have a radially inner guide surface on which the cable guide inner part Axialführungselement is guided; and the wall may have a radially outer surface forming a lumen for a working channel, a fluid channel or a signal cable channel. Thus, the lumen needed for the endoscope can be accommodated in a space-saving manner in the cable guide component, without affecting the cable guide.

The cable guide component may comprise: a cable guide ring, on the inner peripheral surface of which at least one cable pull is arranged; and a cable guide member having a central lumen on the central axis of the cable guide member for guiding the at least one cable pull. The inner peripheral surface of the cable guide ring is located at a spaced from the axial center axis of the cable guide ring position. Thus, the transition of the cable guide from the axially central guide to the distance from the axial center axis guide of the cable between the cable guide element with the central lumen and the cable guide ring takes place. The axial length, which is required in the endoscope for the transition of the cable guide from the axially central guide to the spaced from the axial center axis guide of the cable is defined by the distance between the cable guide element with the central lumen and the cable guide ring.

The cable guide member may have a hose member having at least one radial slot for a cable extending axially along the hose member; wherein the hose member is disposed between the cable guide ring and the cable guide member. The length of the tubular element in this case defines the axial length which is required in the endoscope for the transition of the cable guide from the axially central guide to the spaced from the axial center axis guide the cable. The cable runs in the radial slot.

The tube element may have, spaced from the radial slot, at least one lumen extending axially along the tube element. Thus, even here the lumen needed for the endoscope can be accommodated to save space, without affecting the cable guide.

The cable guide ring can be arranged on the distal side of a bend portion (bend portion) that can be formed by the hose member, and the cable guide member can be arranged in an endoscope shaft.

The invention further relates to endoscope with a control unit; an endoscope shaft; an endoscope head; and a bend portion between the endoscope shaft and the endoscope head for bending the endoscope head, wherein at least one cable for operating a Endoskopkopfauslenkung in the endoscope is arranged extending in the axial direction of the endoscope. The at least one cable for operating a Endoskopkopfauslenkung is axially centered in the endoscope.

In such an endoscope, the axially centrally arranged cables are subject to little or no tension when the endoscope is rolled up.

The endoscope shaft may have a central lumen on the central axis of the endoscope shaft for guiding the at least one cable pull. The transition of the cable guide from the axially central guide to the spaced from the axial center axis guide the cable can be positioned at any location between the endoscope shaft and the endoscope head.

At the bend-off section, the at least one cable pull can be arranged at a distance from the axial center axis of the endoscope head. The transition of the cable guide from the axially central guide to the spaced from the axial center axis guide the cable can thus be positioned at any location between the endoscope shaft and the Abwinkelungsabschnitt.

At the endoscope head, the at least one cable pull can be arranged in the region of the outer circumference of the endoscope head.

In the endoscope, an area may be provided in which the cable guide of the at least one cable pulls from the axially central guide to the guide spaced from the axial center axis. The arrangement of this area in the endoscope can be selected appropriately. A far away on the distal side provided positioning of this area ensures a very long central guidance of the cable. A maximum length of one Central guidance of the cable is made possible by the invention.

The cable pull transition from the axially central guide to the spaced from the axial center axis guide may be disposed between the Abwinkelungsabschnitt and the endoscope shaft.

Such an endoscope may have the above-described cable guide component.

The above-explained aspects of the present invention can be suitably combined.

list of figures

• 1 shows a side view of a distal portion of a cable guide member of a first embodiment.
• 2 shows a perspective view of the distal portion of the cable guide member of the first embodiment.
• 3 shows a perspective view of the distal portion of the cable guide member of the first embodiment.
• 4 shows a perspective view of the distal portion of the cable guide member of the first embodiment.
• 5 shows a perspective view of the distal portion of the cable guide member of the first embodiment.
• 6 shows a perspective view of an intermediate portion of the cable guide member of the first embodiment.
• 7 shows a perspective view of the intermediate portion of the cable guide member of the first embodiment.
• 8th shows a front view of the intermediate portion of the cable guide member of the first embodiment.
• 9 shows a perspective view of a proximal portion of a cable guide member of a first embodiment.
• 10 shows a perspective view of the proximal portion of the cable guide member of the first embodiment.
• 11 shows a perspective view of the entire cable guide member of the first embodiment.
• 12 shows a perspective view of the entire cable guide member of the first embodiment.
• 13 shows a perspective view of a cable guide member of a second embodiment in the disassembled state.
• 14 shows a perspective view of the cable guide member of the second embodiment in the assembled state.
• 15 shows a sectional perspective view of the cable guide member of the second embodiment in the assembled state.
• 16 shows an exploded perspective view of a part of an endoscope, in which the cable guide member of the second embodiment is installed.
• 17 shows a cross-sectional view of a bending portion of the second embodiment.

Hereinafter, the present invention will be described in detail with reference to the drawings by way of embodiments.

Embodiment 1

First of all, referring to the 1 to 12 A first embodiment of the present invention is described.

In the first exemplary embodiment, a cable guide component 1 according to the invention has a distal section 11 , an intermediate section 12 and a proximal section 13 on.

The 1 to 5 show the distal section 11 of the cable guide component 1 of the first embodiment.

The distal section 11 is through a ring 11A formed of metal or plastic and an inner peripheral surface 11C having. The size of the ring 11A is sized so that its outer peripheral surface has approximately the outer diameter of an endoscope to which the cable guide member according to the invention is applied. The ring 11A forms a cable guide ring in the context of the invention.

On the inner peripheral surface 11C are rope ends 11ba a pull rope 11B in direct contact with the inner peripheral surface 11C arranged. The rope 11B forms a cable for operating a Endoskopkopfauslenkung. As a "cable" here is for example a rope or wire to understand, which is able to be stretched between a Seilzugverankerungspunkt on a distal side and a cable control element (eg, a joystick) on a proximal side to a deflection movement of the cable control element to Seilzugverankerungspunkt when To transmit tension movement (pulling force) or pushing movement. The material of the cable is not limited here.

In the present embodiment are on the inner peripheral surface 11C cable ends 11ba of three pull ropes 11B appropriate. Thus, on the inner peripheral surface 11C three rope ends 11ba intended.

The rope ends 11ba can on the inner peripheral surface 11C be soldered, glued, pressed or secured in any other suitable manner.

On the inner peripheral surface 11C can the rope ends 11ba be arranged so that the distances of the rope ends 11ba are uneven to each other, as in 2 is shown. More specifically, here is an in 2 left end of the rope 11ba to the two in 2 right rope ends 11ba further apart than the two right rope ends 11ba to each other.

Alternatively, the rope ends 11ba on the inner circumferential surface 11C be arranged so that the distances of the rope ends 11ba equal to each other (less than 120 degrees offset) are.

The ring 11A can be placed on the distal side of an endoscope head body. The ring 11A can be integrally formed with the endoscope head body. Alternatively, the ring 11A be provided separately from the endoscope head body on the distal side of the endoscope head body.

The 6 to 8th show the intermediate section 12 of the cable guide component 1 of the first embodiment.

The intermediate section 12 is cylindrical and has over its axial length a constant outer diameter, which may correspond to the outer diameter of an endoscope. In particular, an elastic bending portion of an endoscope may be the intermediate portion 12 form. Thus, in the present embodiment, the intermediate section 12 made of an elastic material.

The intermediate section 12 has in its interior a cable channel 12A , a first lumen 12B , a second lumen 12C and a third lumen 12D on that the intermediate section 12 go through in the axial direction.

The cable duct 12A is formed by three radially extending slots extending from a common axis in the radial direction, see 8th , In other words, as viewed in cross-section, the three radially extending slots are interconnected at their radially inner end. The common axis of the three radially extending slots is eccentric to the axis of the intermediate section 12 , Furthermore, the radial dimensions of all three radially extending slots in the cable duct 12A chosen so that the in 8th right radially extending slot has a longer radial dimension than the two left radially extending slots. The in 8th right, radially extending slot is for the in 2 Traction cable shown on the left 11B intended. The shape of the cable duct 12A is thus due to the arrangement of the traction cables 11B on the ring 11A of the distal section 11 customized.

The intermediate section 12 Forms a hose member with three axially along the hose member extending radial slots for the traction cables 11B ,

The shape of the cable duct 12A is over the entire axial length of the cable duct 12A the same, see 7 in which the intermediate section 12 is shown as a transparent body to the structure of the intermediate section 12 to demonstrate. More specifically, the cross-sectional shape of the intermediate portion 12 is over the entire axial length of the intermediate section 12 equal.

The first lumen 12B , the second lumen 12C and the third lumen 12D each have a circular shape in cross-section and form a camera cable channel, a working channel and a fluid channel. The lumens 12B . 12C and 12D are spaced from each other and the cable channel 12A , In particular, in cross section, each of the lumens 12B . 12C and 12D adjacent to one of the radially extending slots of the cable duct 12A arranged. Further, each of the lumens 12B . 12C and 12D arranged so that it is between two of the three axially extending radial slots of Seilzugkanals 12A is sandwiched.

The 9 and 10 show the proximal section 13 of the cable guide component 1 of the first embodiment.

The proximal section 13 is cylindrical and has over its axial length a constant outer diameter, which may correspond to the outer diameter of an endoscope. In particular, an entire endoscope tube or at least one distal end section of an endoscope tube can be the proximal section 13 form. Thus, in the present embodiment, the proximal portion 13 made of an elastic material. It should be noted that the intermediate section 12 a higher elasticity than the proximal section 13 Has.

The proximal section 13 has in its interior a cable channel 13A , a first lumen 13B , a second lumen 13C and a third lumen 13D on top of the proximal section 13 go through in the axial direction.

The cable duct 13A is in the proximal section 13 arranged centrally. In other words, the cable duct is 13A along the axis of the proximal section 13 intended. The cable duct 13A has a clear width that is so large that they are the intended hauling ropes, here so the three hawsers 11B offers enough space. In other words, the cable channel 13A so big that the cable duct 13A provides the space to be arranged in it tension cables taking into account the freedom of movement of the traction cables.

The proximal section 13 forms a cable guide element with a central lumen on the central axis of the cable guide element for guiding the traction cables. The cable duct 13A forms the central lumen.

The first lumen 13B , the second lumen 13C and the third lumen 13D each have a circular shape in cross-section and form a camera cable channel, a working channel and a fluid channel. The lumens 13B . 13C and 13D are spaced from each other and surround the centric cable channel 13A , The lumens 13B . 13C and 13D each form an extension to said lumens 12B . 12C and 12D of the intermediate section 12 ,

The cross-sectional shape of the proximal section 13 is over the entire axial length of the proximal section 13 the same, see 10 in which the proximal section 13 is shown as a transparent body to the structure of the proximal portion 13 to demonstrate.

The 11 and 12 show the assembly of the entire cable guide member of the first embodiment.

The ropes 11B be in the cable duct 12A of the intermediate section 12 introduced, go through the cable channel 12A of the intermediate section 12 and are in the cable channel 13A of the proximal sections 13 inserted and go through the proximal section 13 to a control, not shown. In assembled condition is the intermediate section 12 between the distal section 11 and the proximal portion 13 arranged like this in 11 is shown.

In this case, the radial location of the respective traction cable runs in the distal direction 11B from a radially inner position at the distal end of the centric cable channel 13A of the proximal portion 13 to a radially outer position on the ring 11A ,

From an axially central guide on the proximal section 13 becomes the respective pull rope 11B directed to a spaced from the axial center axis guide on the ring 11A.

The intermediate section 12 acts as a spacer between the proximal section 13 and the ring 11A , The length of the intermediate section 12 thus influences the pitch angle of the respective Zugseils 11B from the proximal section 13 to the ring 11A , In other words, it brings about a shortening of the intermediate section 12 a steeper pitch angle of the respective Zugseils 11B from the proximal section 13 to the ring 11A with himself. On the other hand causes a long intermediate section 12 a flat pitch angle of the respective Zugseils 11B from the proximal section 13 to the ring 11A ,

The cable guide member of the first embodiment may be applied to an endoscope having a control unit, an endoscope shaft, an endoscope head, and a bend portion between the endoscope shaft and the endoscope head for bending the endoscope head. In this endoscope are the three traction cables 11B for actuating an endoscope head deflection in the endoscope extending in the axial direction of the endoscope extending. The ring 11 may be located on the distal side of the endoscope head. The intermediate section 12 can act as a bend section. The proximal section 13 can form the endoscope tube or endoscope tube.

In such an endoscope are the three tension cables 11B in the endoscope shaft or endoscope tube in the endoscope guided axially in the middle. Only seen in the distal direction just before the endoscope head leave the pull ropes 11B the axially central guide and turn radially outward to the ring 11 at the endoscope head.

Because the pull ropes 11B In the endoscope are axially centered, they are subject even in the rolled up state of the endoscope no or only a slight tension.

In a conventional case, in which the traction ropes are guided off-center in the endoscope, the traction ropes in the rolled-up endoscope shaft are tensioned to different degrees. In the rolled-up endoscope shaft, a traction cable lying further outwards is stretched more tightly than a traction cable lying further inside.

In contrast, in the present invention, the tension cables are stretched in the rolled-up endoscope shaft approximately equally strong, since they are close to each other centrally in the endoscope. Thus, if the pull ropes show a lessening of tension over time, tensioning of the pull ropes becomes easy.

Embodiment 2

The following is with reference to the 13 to 17 A second embodiment of the present invention is described.

In the first embodiment, the transition from the central to the off-center guidance of the traction cables takes place between the proximal portion 13 and the distal section 11 (more precisely the ring 11A ). In the present second embodiment, however, the transition from the center to the off-center guidance of the traction cables takes place on a specially designed mold construction of a cable guide component 101 ,

This rope guide component 101 of the second embodiment consists of a cable guide inner part 110 and a cable guide outer part 120 , The cable guide outer part 120 has an interior into which the cable guide inner part 110 can be inserted.

The cable guide inner part 110 has a conical structure with an increasing from the proximal side to the distal side outer diameter. The cable guide inner part 110 has on its outer peripheral surface designed as a groove rope guide channel 112 , The trained as a groove rope guide channel 112 is thus on the radially outer side of the cable guide inner part 110 open. The rope guide channel 112 extends in the axial direction of the cable guide inner part 110 , In this case, the cable guide channel runs 112 on the outer circumference so that it from a proximal axially central position of the cable guide inner part 110 to a distal spaced from the axial center axis position of the cable guide inner part 110 passes like this in 13 is shown. At the spaced from the axial center axis position of the cable guide inner part 110 , ie, at the distal end portion of the cable guide inner part 110 runs the cable guide channel 112 in the distal direction on an outer peripheral portion 116 of the cable guide inner part 110 , The rope guide channel 112 thus increases from the proximal side, where the cable guide channel 112 in the region of the central axis of the cable guide inner part 110 is arranged, radially outward toward the distal side.

The cable guide inner part 110 has three cable guide channels in the present embodiment 112 at the circumference of the cable guide inner part 110 evenly, ie spaced at 120 °, are distributed.

The cable guide inner part 110 also has three axial grooves 114 on the outer circumference, which extend straight in the axial direction. The three grooves 114 and the three cable guide channels 112 are alternately arranged on the outer circumference of the cable guide inner part 110. In other words, the grooves 114 and the cable guide channels 112 sandwiched on the outer circumference so that there is always a groove 114 between two cable guide channels 112 is, and a cable guide channel 112 between two grooves 114 is provided.

The grooves 114 form on the cable guide inner part 110 an axial guide element for the cable guide outer part described below 120 ie a cable guide inner part axial guide element.

The cable guide outer part 120 has a sleeve-like construction. In other words, the cable guide outer part forms 120 a cylinder with an outer peripheral surface 126 , Inside the cable guide outer part 120 a cavity 121 is provided, in which the cable guide inner part 110 is insertable. The cavity 121 tapers in the proximal direction and is adjacent to the outer shape of the cable guide inner part 110 customized.

More specifically, the cavity 121 is adjacent to an axially extending cylinder-like wall 122 , The cylinder-like wall 122 forms an outer wall of a lumen 124 , which extends in the axial direction of the cable guide outer part 120 extends.

In the cable guide outer part 120 are three cylindrical walls 122 at the circumference of the cable guide outer part 120 are provided, uniformly spaced ie provided at 120 °, as in 13 is shown. Thus, in the cable guide outer part 120 three lumens 124 provided, for example, each a lumen 124 for a working channel, a fluid channel and a camera cable channel.

The cable guide outer part 120 thus each has a counterpart to the respective cable guide channel 112 of the cable guide inner part 110 , Like this 15 can be removed, run the cable guide channels 112 in the assembled cable guide component 101 from the distal side to the proximal side so as to transition from an axially central guide to a guide axially offset axially from the center. The transition from the axially central guide to the axially offset from the center radially outward guide is preferably carried out in an approximate S-shape, see 15 , At the cable guide outer part 120 occurs the respective cable guide channel 112 at a neckline 127 on the outer peripheral surface 126 radially outward out to then extend distally parallel to the axis of the assembled cable guide member 101, see 14 ,

16 shows an exploded perspective view of a portion of an endoscope, in which the cable guide member of the second embodiment is installed.

This endoscope has an endoscope shaft (endoscope tube) 130 with an axially central cable guide channel 131 for pull ropes 109 , The endoscope shaft 130 is from a network 140 surrounded by a cloak 150 is surrounded.

The in the endoscope 130 in the middle, ie in the region of the central axis of the endoscope shaft 130 guided pull ropes 109 , extend distally from the endoscope shaft 130 in the cable guide component 101 , In the rope guide component 101 takes place in the distal direction, the transition from the axially central guide to the axially offset from the center radially outward guidance of the traction cables 109. Distal of the cable guide member 101 is bending section 108 arranged.

The bending section 108 has on its outer peripheral surface in the axial direction extending Zugseillumen 108A in which the pull ropes 109 are provided, and axial lumens for other purposes.

17 shows a cross-sectional view of the bending section 108 , In particular, as the lumens referred to herein, a working channel lumen 124A, a fluid channel lumen 124B, and a camera cable lumen 124C are shown. Each of the lumens 124A, 124B and 124C is arranged to be between two of the three axially extending pull lumens 108A is sandwiched.

Also in the endoscope of this embodiment, the three tension cables 109 in the endoscope shaft or endoscope tube in the endoscope guided axially in the middle. Only seen in the distal direction just before the bending section 108 leave the pull ropes 109 in the cable guide component 101 the axially central guide and turn radially outward for further axial course in the distal direction.

Because the pull ropes 109 In the endoscope are axially centered, they are subject even in the rolled up state of the endoscope no or only a slight tension. Thus, also here, if the traction ropes show a lessening of the tension over time, retightening of the traction cables becomes easy.

alternatives

In embodiment 1, the intermediate section 12 between the distal section 11 (the ring) and the proximal section 13 arranged, wherein the traction cable through the interior of the intermediate section 12 passing through the cable channel 12A is formed, runs. In an alternative, the intermediate section 12 be omitted and between the distal section 11 (the ring) and the proximal section 13 a spacer can be arranged. The spacer element need not have a special cable channel, but can the lumens 12B - 12D to have. In another alternative, between the distal section 11 and the proximal portion 13 a spacer can be arranged that has neither a cable channel nor lumen. For the lumens 12B - 12D can be used by this spacer separate tube elements, between the respective lumen at the distal portion 11 and the respective lumen at the proximal portion 13 are arranged.

In the first and second embodiments, the cable guide member has three lumens. However, the number of lumens is not limited. There may be zero lumens, one lumen, two lumens or four or more lumens extending axially. The type of lumen is not limited. The lumens can also be used for uses other than those specified.

In the first and second embodiments, the respective cable guide component on three tension cables. The number of tension cables is not limited. There may be only one pull rope or two pull ropes or four or more pull ropes may be provided.

In Embodiment 1, the common axis of the three radially extending slots is eccentric to the axis of the intermediate portion 12 , If an alternative embodiment is chosen, at the distal portion 11 the rope ends 11ba on the inner circumferential surface 11C are arranged so that the distances of the rope ends 11ba equal to each other (offset by 120 degrees), the common axis of the three radially extending slots can be congruent with the axis of the intermediate section 12 be. In this case, the radial dimensions of all three radially extending slots in the cable channel 12A be equal.

In the embodiments, in the endoscope, at least in the endoscope shaft, the tension cables are centered, i. guided in the region of the central axis of the endoscope. The transition from the central guide of the traction cables to the eccentric guide (or connection) of the traction cables is accomplished by the cable guide component. The cable guide member is disposed on the distal side of the endoscope head or the bending portion. The invention is not limited thereto. The cable guide component can be arranged at any location along the cable guide along the endoscope. Already a short distance midway guided traction ropes in the endoscope provides for a certain advantageous low tension of the traction cables for this area of the endoscope.

The present invention is applicable not only to a flexible endoscope but also to a rigid endoscope. The principle of the present invention can be applied to all types of endoscopes.

The discussed alternatives are suitably combinable.

LIST OF REFERENCE NUMBERS

1

Cable guide member

11

distal section

11A

ring

11B

rope

11ba

rope end

11C

Inner circumferential surface

12

intermediate section

12A

cable channel

12B

lumen

12C

lumen

12D

lumen

13

proximal section

13A

cable channel

13B

lumen

13C

lumen

13D

lumen

101

Cable guide member

108

bending section

108A

Zugseillumen

109

rope

110

inner part

112

Cable guide channel, groove

114

radial cutout

116

Outer circumferential surface

120

outer part

122

Lumen outer wall surface

124

Lumen inner wall surface

126

Outer circumferential surface

127

wall section

130

endoscope shaft

131

Cable guide channel

140

weave

150

coat

Claims (15)

Cable guide component for an endoscope with at least one cable pull (109) for actuating an endoscope head deflection; wherein in the cable guide component (101) a cable guide of the at least one cable (109) from the axially central guide to the spaced from the axial center axis guide merges, characterized in that the cable guide member (101) has a cable guide inner part (110), the at least one cable guide channel (112) for a cable (109) on its outer peripheral surface, wherein the cable guide channel (112) from a proximal axially central position of the cable guide inner part (110) to a distal spaced from the axial center axis position of the cable guide inner part (110) passes. Cable guide component according to Claim 1 wherein the cable guide inner part (110) has an outer diameter increasing from the proximal side to the distal side. Cable guide component according to Claim 1 or 2 wherein the cable guide channel (112) is open at the radially outer side. Cable guide component according to one of Claims 1 to 3 wherein the cable guide member (101) further comprises a cable guide outer member (120); the cable guide outer part (120) has an inner space into which the cable guide inner part (110) can be inserted; the cable guide outer part (120) has a cable guide outer part axial guide element (122) for a positive guidance of the cable guide inner part (110) in the axial direction of the cable guide outer part (120); and the cable guide inner part (110) has on its outer circumference a cable guide inner part axial guide element (114) adapted to the shape of the cable guide outer part axial guide element (122). Cable guide component according to Claim 4 wherein the cable guide outer member axial guide member (122) has an axially extending wall; the wall having a radially inner guide surface on which the cable guide inner part axial guide element (114) is guided; and the wall has a radially outer surface forming a lumen (124) for a working channel, a fluid channel or a signal cable channel. Cable guide component for an endoscope with at least one cable pull (11B) for actuating an endoscope head deflection; wherein in the cable guide component (11) a cable guide of the at least one cable pull (11B) passes from the axially central guide to the spaced from the axial center axis guide, characterized in that the cable guide member (11) comprises a cable guide ring (11A), at the Inner peripheral surface at least one cable (11 B) is arranged; and a cable guide member (13) having a central lumen (13A) on the central axis of the cable guide member (13) for guiding the at least one cable pull (11A). Cable guide component according to Claim 6 with a hose member (12) having at least one radial slot (12A) for a cable pull (11B) extending axially along the hose member (12); wherein the hose member (12) between the cable guide ring (11A) and the cable guide element (13) is arranged. Cable guide component according to Claim 6 or 7 wherein the tube member (12) spaced from the radial slot (12A) has at least one lumen (12B, 12C, 12D) extending axially along the tube member (12). Cable guide component according to one of Claims 6 to 8th wherein the cable guide ring (11A) is locatable on the distal side of a bend portion that can be formed by the tube member (12), and the cable guide member (13) is disposable in an endoscope shaft. Endoscope with a control unit; an endoscope shaft (13; 130); an endoscope head; a bending section (12; 108) between the endoscope shaft (13; 130) and the endoscope head for bending the endoscope head, wherein at least one cable (11B; 109) for operating an endoscope head deflection in the endoscope is arranged extending in the axial direction of the endoscope; and a cable guide component according to one of Claims 1 to 9 wherein the at least one cable pull (11B; 109) is guided axially centrally in the endoscope for actuating an endoscope head deflection. Endoscope according to Claim 10 wherein the endoscope shaft (13; 130) has a central lumen (13A; 131) on the central axis of the endoscope shaft (13; 130) for guiding the at least one cable pull (11B; 109). Endoscope according to Claim 10 or 11 in that at the bend-off section the at least one cable pull (11B; 109) is arranged at a distance from the axial center axis of the endoscope. Endoscope according to one of Claims 10 to 12 , wherein at least one cable pull (11B, 109) is arranged on the endoscope head in the region of the outer circumference of the endoscope head. Endoscope according to one of Claims 10 to 13 in which an area is provided in the endoscope, in which the cable guide of the at least one cable pull (11B; 109) passes from the axially central guide to the guide spaced from the axial central axis. Endoscope according to one of Claims 10 to 14 wherein the cable transfer from the axially central guide to the guide spaced from the axial center axis between the Abwinkelungsabschnitt and the endoscope shaft (13; 130) is arranged.

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