DE102017100869A1 - Endoscope with an endoscope head and a reciprocating motion body provided on the endoscope head, and an endoscope with a cable fine adjustment structure - Google Patents

Abstract

The invention relates to an endoscope having an endoscope head (1) with a working channel (11) for guiding microtools, and a tool guide surface (20) on which a tool, which can be guided through a working channel of an endoscope, can come into contact in the lateral direction of the endoscope head to be distracted. At the endoscope head (1) in the longitudinal direction of the endoscope head (1) back and forth movable movement body (2) is guided, which has the Werkzeugleitfläche (20).
The invention also relates to an endoscope with a cable fine adjustment structure for an endoscope head (1), with a blocking mechanism (30) in which a tensile body (3) applied to an endoscope can be guided freely in the distal direction, but the movement of the pulling body (3) in is blocked in the proximal direction.

Description

The present invention relates to an endoscope. In particular, the invention relates to an endoscope with an endoscope head and a reciprocating motion body provided on the endoscope head with a tool guide surface, and an endoscope with a cable fine adjustment structure.

The moving body with the tool guide has a similar function as an albarran lever.

Such an albarran lever can be used in an endoscope for examination e.g. the esophagus or the duodenum, the bile duct, bile, pancreatic duct, pancreas, etc. are applied.

Such an endoscope has an optic (illumination device and camera). The endoscope also has at the output of the working channel the albarran lever, which allows pivoting a targeted deflection of the tools that are pushed through the working channel.

After use of the endoscope, this is subjected to a treatment. This must reliably exclude the transmission of all germs or microorganisms such as bacteria, viruses, fungi, worms and spores. During reprocessing, the endoscope is first cleaned manually in order to remove organic material or chemical residues without residue. After cleaning, a machine disinfection or sterilization takes place. Thus, it should be avoided that germs or microorganisms, etc., with which an endoscope came in contact with the use of the endoscope, are transferred to the next use on the patient.

For example, the DE 196 27 016 C1 an endoscope with an albarrane lever. More specifically, the endoscope has a carrier detachable from the endoscope, in which the albarran lever is pivotally mounted on an axle supported in the carrier. The pivoting of the Albarran lever is accomplished via a pull rope, which is anchored to the albarran lever and guided in the endoscope.

The object of the present invention is to provide an endoscope in which it is even better avoided that germs, with which an endoscope came into contact, are transferred to the patient during the next use.

This object is achieved by an endoscope with the features of claim 1. Advantageous developments are the subject of the dependent claims.

The endoscope according to the invention has an endoscope head with a working channel for guiding microtools, and a tool guide surface on which a tool, which can be guided through a working channel of an endoscope, can come into contact in order to be deflected in the lateral direction relative to the longitudinal axis of the endoscope head. At the endoscope head, a movable in the longitudinal direction of the endoscope head and forth moving body is guided, which has the Werkzeugleitfläche.

Thus, in the present invention, the reciprocating moving member replaces a conventional albarran lever. The movement of the moving element that can be generated from the proximal side of the endoscope is a movement in the longitudinal direction of the endoscope. The conventional pivoting movement of the Albarranhebels deleted.

The movement body can be guided at the distal end region of the endoscope head on the outer circumference of the endoscope head. Thus, a large guide surface can be provided for the moving body, which gives the reciprocating movement of the moving body high stability.

The movement body can be tight against the endoscope head. Thus, the reciprocating movement of the moving body on the endoscope head can be performed even more stable.

The tool guide surface can have a projection extending in the proximal direction on the lateral outer edge region, by means of which a tool guided on the tool guide surface is bent in the proximal direction. Thus, the angle of the guided tool, with which it is advanced laterally from the endoscope head, can be suitably changed. In other words, the tool is pushed further in the proximal direction than without this elevation.

The endoscope head may have a tensile body that can be actuated from the proximal side, and the movement body may be reciprocally movable on the endoscope head by the tensile body. A simple and familiar to the operator handling of the moving body as a conventional Albarranhebel is possible.

The movement body can be separable from the tension body for actuating the movement body. Thus, the moving body and the endoscope head can be physically separated. This allows the moving body to be designed as a single-use component, which is disposed of after use. The endoscope head can be cleaned and reprocessed and equipped with a fresh moving body the next time.

At the distal region of the tensile body, a force transmission element may be arranged which is in communication with the inner circumference of the movement body. The power transmission element may be a detent.

A magnetic element may be arranged on the distal region of the tensile body, and a countermagnetic element may be arranged on the movement body.

A thread can be formed at the distal region of the pulling body, and a matching counter thread can be formed on the moving body.

In an alternative, the invention relates to an endoscope with a fine wire adjustment structure for an endoscope head, wherein the cable fine adjustment structure has a blocking mechanism in which a tensile body applied to an endoscope is freely movable in the distal direction, but the movement of the tensile body in the proximal direction is blocked. The cable fine adjustment structure allows for fine adjustment of the pull body actuated (pulled) body (e.g., an albarrane lever or a motion member) relative to the endoscope head.

The blocking mechanism may be irreparably disabled when the pulling member is pulled in the proximal direction with a force exceeding a predefined limit.

The blocking mechanism may have at least one blocking projection which blocks movement of a locking lug attached to the pulling body in the proximal direction.

The locking projection and / or the locking lug can break if the pulling body is pulled in the proximal direction with a force that exceeds a predefined limit value.

The Seilzugfeineinstellstruktur can be a Seilzugfeineinstellstruktur for fine adjustment of at least one traction body for deflecting a bending unit of a parent or secondary endoscope, for fine adjustment of at least one traction body Albarranhebelauslenkung or fine adjustment of at least one traction body of a deflectable optical module. The Seilzugfeineinstellstruktur can be used in any type of endoscope to achieve a fine control of a pull rope, control wire, etc.

The endoscope can be a duodenoscope.

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

list of figures

• 1 shows a schematic perspective view of an endoscope head of an endoscope of an embodiment of the present invention with a cap that is placed on the endoscope head.
• 2 shows a schematic perspective view of the endoscope head with attached cap.
• 3 shows a schematic side view of the endoscope head with attached cap, wherein the cap is in the distal position.
• 4 shows a schematic side view of the endoscope head with attached cap, wherein the cap is in the proximal position.
• 5 shows a schematic plan view of the endoscope head of the embodiment.

Hereinafter, the present invention will be described in detail with reference to the drawings with reference to an embodiment.

embodiment

The following is with reference to the 1 to 5 An embodiment of the present invention will be described.

The endoscope according to the invention has an endoscope head 1 and a protective cap 4 , In the cap 4 a moving body 2 described below is integrated.

In order to facilitate the understanding of the invention, are in the 1 to 5 the endoscope head 1 and the other elements are shown transparent.

First, with reference to the figures, the endoscope head 1 described.

In 1 is the endoscope head according to the invention 1 from the protective cap 4 shown separately. The protective cap 4 is not yet on the endoscope head 1 placed.

The endoscope head according to the invention 1 has a cylindrical housing 15 and has, inter alia, a working channel 11 and a rod channel 13 on, each along the longitudinal direction of the endoscope head 1 and extend parallel to each other.

The bar channel 13 corresponds to a Zugseilkanal (control wire channel) and leads a rod 3 , The pole 3 forms a tensile body according to the present invention.

At the proximal side is at the pole 3 an unillustrated traction rope anchored. The pull rope passes through the endoscope and can be pulled on the proximal side of the endoscope, the so-called operator side. The pull rope serves to over the bar 3 a moving member described below 2 to press. For this purpose, the pull rope can be actuated on the proximal side of the endoscope, for example by means of a clamping screw, a lever, a joystick, etc. The pole 3 can in a moving body described below 2 be introduced.

The working channel 11 performs micro-tools to examine eg the esophagus or the duodenum, the bile duct, the bile, the pancreatic duct, the pancreas, etc.

On the distal side has the endoscope head 1 an optic extension 12 at which a lighting device 17 and a camera 18 are provided in a known manner, this optical extension 12 in 1 shown on the right side. The optics extension 12 forms a housing projection with a camera and lighting. The optics extension 12 is laterally adjacent to the moving body described below 2 arranged to a position and a manipulating movement of a micro-tool well in the field of view of the camera 18 to have.

The working channel 11 ends in a section of the endoscope head 1 , which is spaced from the distal end, and forms there a distal exit opening 111 of the working channel 11 ,

Distal from the distal exit 111 of the working channel 11 the movement body 2 is arranged, which is relative to the endoscope head 1 can be moved. The working channel 11 thus runs in the distal direction to the moving body 2 out.

Below is the rod 3 described in more detail.

The pole 3 is formed as an elongated cylindrical member. The pole 3 is in the bar channel 13 of the endoscope head 1 arranged.

At the distal side of the rod 3 points the pole 3 three in the axial direction one behind the other arranged locking lugs 30 on. The locking lugs 30 form a distal end body of the rod 3 ,

Every catch 30 has on the distal side a tapered to the distal side end portion 31 and proximal to the forehead section 31 a ring portion 32. The forehead portion 31 is cone-shaped and has a decreasing to the distal side outer circumference. The ring section 32 has an outer diameter slightly larger than the outer diameter of the rod 3 on the proximal side of the latching noses 30 (proximal to the end body). The ring section 32 forms a sales area on the proximal side 33 out. At the centric section of the heel area 33 the two distal locking lugs 30 goes the ring section 32 in the proximal adjacent forehead section 31 over, see 1 , At the centric section of the heel area 33 the proximal catch 30 goes the ring section 32 to the proximal portion of the rod 3 above. In other words, between the locking lugs 30 Einrastvertiefungen trained.

The locking lugs 30 can in an insertion channel described below 23 of the moving body 2 are inserted and there lock on a locking projection described below.

The locking lugs 30 the pole 3 form together with the blocking projection of one or more counter-elements in the insertion channel 23 are provided, a Seilzugfeineinstellstruktur invention.

Proximal of the locking lugs 30 is on the outer circumference of the rod 3 a diameter extension 38 at one in the housing 15 arranged section of the pole 3 educated. The diameter extension may be in the shape of one on the outer circumference of the rod 3 fixed disc 38 be educated. The disc 38 moves with the rod 3 , To the movement of the disc 38 to allow owns the bar channel 13 at a section of him in housing 15 a diameter extension 131 with a larger diameter than proximal and distal to the diameter extension 131 , The outer diameter of the disc 38 is slightly smaller than the inner diameter of the diameter extension 131 of the bar channel 13 ,

The proximal surface of the disc 38 forms a contact surface for a spring 9 as a biasing member, on the outer circumference of the rod 3 is arranged. The feather 9 lies in the housing 15 of the endoscope head 1 on a spring seat 14 at.

The feather 9 is formed in the embodiment as a spiral spring. The feather 9 is between the spring seat 14 and the proximal surface of the disc 38 used under bias. The feather 9 tenses the rod 3 in the distal direction.

By pulling the rod 3 by pulling rope in the proximal direction, the bias of the in the distal direction biasing spring 9 be overcome and the rod 3 can be pulled in the proximal direction.

Distal from the diameter extension 131 is at the bar channel 13 a seal 16 intended. The seal 16 is designed as a ring-like sealing element and sits in the housing 15 sealing on the outer circumference of the rod 3 , The seal 16 is between the diameter extension 131 and the distal exit of the rod channel 13 arranged. In other words, the seal 16 is between the spring 9 and the distal exit of the rod channel 13 arranged.

The pole 3 can be made of plastic eg by injection molding or 3D printer.

On the distal section of the endoscope head 1 is on the outer circumference of the endoscope head 1 a protective cap 4 placed.

Below is the protective cap 4 described.

The protective cap 4 is designed as a bottomed cylinder. In other words, the protective cap has 4 a cup shape. The cup shape has a bottom on the distal side of the protective cap 4 is provided, and a circumferential side wall. The size of the cup shape is chosen so that the protective cap 4 on the outer circumference of the endoscope head 1 can be set so that the distal output 111 of the working channel 11 and the distal portion of the rod 3 , distal to the endoscope head 1 protrudes, are covered. Thus, through the cap 4 also the optic extension 12 covered.

The protective cap 4 has a window 41 , the optical access to the lighting device 17 and the camera 18 granted, see 2 ,

The protective cap 4 is made of plastic eg by injection molding or 3D printer.

In the cap 4 is the moving body 2 at a gate of the inner peripheral surface of the moving body 2 formed. Thus, the protective cap 4 forms part of the moving body according to the invention 2 ,

The moving body 2 has a tool guide surface 20 , at the one through the working channel 11 of the endoscope head 1 guidable micro-tool can come into contact in the lateral direction of the endoscope head 1 (in the 1 - 4 to be distracted), so that the micro-tool z. B. can be introduced into a bile duct. The tool guide surface 20 lies in the endoscope head 1 built-in state of the distal end opening 111 the working channel 11 opposite, see 2 , Thus, the moving body has 2 a function of a conventional albarran lever.

On the proximal side, the moving body 2 a base section 22 on. The base section 22 extends in installation position of the moving body 2 in the proximal direction.

The base section 22 has an insertion channel 23 extending in the longitudinal direction of the moving body 2 extends and is formed as a blind hole. In the insertion channel 23 becomes the distal portion of the rod 3 introduced.

On the inner circumference of the insertion channel 23 is formed as a blocking projection at least one elastic nose, not shown, from the inner circumference of the insertion channel 23 pointing inwards. The nose may be a single nose or an inward of the inner circumference of the insertion channel 23 projecting ring, the one perpendicular to the extension direction of the insertion channel 23 has trained annular surface. The nose or the annular surface serve, in the Einrastvertiefungen between the locking lugs 30 the pole 3 lock. In other words, the nose or the annular surface snaps onto the shoulder surface 33 one.

The window 41 as a side cutout of the side wall of the protective cap 3 intended. At the endoscope head 1 arranged protective cap 4 is the side cutout of the side wall of the protective cap 4 above the movement element 2 , Through the window 41 micro-tools can be advanced.

Besides, the cap is 4 so at the endoscope head 1 arranged that the lighting device 17 through the window 41 Light gives off and the camera 18 through the window 41 Taking pictures.

The protective cap 4 has a distal opening 42 ,

Function of the invention

The endoscope according to the invention is applied as follows.

A new endoscope or a cleaned and sterilized endoscope is provided. A new cap according to the invention 4 is applied to the distal end portion of the endoscope head 1 set. At the same time the pole 3 in the insertion channel 23 introduced, and the latching recesses between the locking lugs 30 the pole 3 snap on the nose or the annular surface on the inner circumference of the insertion channel 23 one.

Im at the endoscope head 1 mounted state are the lighting device 17 and the camera 18 through the window 41 exposed. The proximal opening 42 the cap lies close to the outer circumference of the endoscope head 1 at.

The endoscope may be introduced into the patient for examination or treatment.

If the endoscope to a desired location z. B. is introduced in the duodenum opposite the mouth of the bile duct, the area of the mouth of the bile duct by the illumination device 17 and the camera 18 illuminated and recorded.

Now a micro-tool can pass through the working channel 11 be pushed. The micro-tool can be, for example, a guide wire, a biopsy forceps, a stent system, a catheter system, a papillotome, etc.

The micro-tool is passed through the distal exit port 111 of the working channel 11 advanced and reaches the tool guide surface 20 of the moving body 2 ,

Now, in support of the further forward movement of the micro-tool, the moving body 2 moved back and forth in the longitudinal direction by the movement in the body 2 latched rod 3 pulled by pulling rope and relieved again.

The better understanding because of the show 3 and 4 the endoscope head 1 and the protective cap 4 with the moving body 2 as a transparent body.

4 shows the moved in the distal direction state of the moving body 2 as the first distal position of the moving body 2 , In this state, the pull rope is not operated. The on the pole 3 integrally provided disc 38 located at the distal end of the diameter extension 131 of the bar channel.

5 shows the pulled in the proximal direction state of the moving body 2 as a second proximal position of the moving body 2 , In this condition is the spring 9 pressed together. The pole 3 is pulled by pulling rope in the proximal direction. The on the pole 3 integrally provided disc 38 is spaced from the distal end of the diameter extension 131 of the bar channel.

Thus, the moving body 2 in the longitudinal direction of the endoscope head 1 be moved back and forth. The direction of the reciprocating movement of the moving body 2 is the axial direction of the endoscope head 1 ,

The protective cap 4 moves during the reciprocating motion of the moving body 2 also in the axial direction of the endoscope head 1 , Thus, the protective cap guides and stabilizes 4 the reciprocating motion of the moving body 2 ,

By pulling and releasing the pull rope becomes the moving body 2 between the distal and the proximal position reciprocated. By alternately pulling and releasing movement of the pulling cable can thus take place alternately towards the proximal side and to the distal side of successive displacement of the moving body 2 with his tool guide 20 be effected. This facilitates the advancement of the micro-tool.

Function of the cable fine adjustment structure

Due to the presence of several locking positions between the rod 3 and the insertion channel 23 of the moving body 2 can change the position of the tool guide 20 relative to the endoscope head 1 be fine tuned.

The locking lugs 30 the pole 3 can go so far into the insertion channel 23 are inserted until the desired of the locking lugs 30 on the nose or the annular surface of the insertion channel 23 locks. The deeper the pole 3 in the insertion channel 23 penetrates, ie the more locking lugs 30 at the proximal nose or ring surface of the insertion channel 23 are pushed past, the closer the moving body 2 at the distal exit 111 of the working channel 11 ,

The locking lugs 30 form a blocking mechanism in which a tensile body applied to an endoscope (eg the rod 3 ) freely in the distal direction in the moving body 2 is feasible, but the movement of the train body 3 in the proximal direction (through the nose or the annular surface of the insertion channel 23 ) is blocked. Then break the nose or the annular surface of the insertion channel 23 , or the locking noses break 30 the pole 3 ,

The locking mechanism can be irreparably overridden when the rod 3 is pulled in the proximal direction with a force that exceeds a predefined limit.

The blocking mechanism 30 So has the nose or the ring surface on the inner circumference of the introducer 23 as a counter element at least one blocking projection, a movement of a rod on the 3 attached latch 30 blocked in the proximal direction.

The locking projection (nose or annular surface on the inner circumference of the insertion channel 23 ) and / or the latch 30 breaks when the pole 3 is pulled in the proximal direction with a force that exceeds a predefined limit.

Because the movement body 2 is designed as a single-use body, the breaking of the locking projection (nose or the annular surface on the inner circumference of the insertion channel 23 ) to prefer. The pole 3 can be reused.

Effects and advantages of the invention

The invention provides a simple and inexpensive solution for an endoscope in which a protective cap is spatially separated from a pull cable for actuating a reciprocating movement of a tool guide surface. Due to its geometrical structure, a conventional albarran lever offers many undercuts, which can be used on germs, etc., which could possibly remain on the albarran lever during intensive cleaning and sterilization.

In the present invention, the moving body has 2 the tool guide surface 20. Thus, the moving body takes over 2 the function of an albarran lever. The moving body 2 can off the shelf 3 be deducted in the distal direction. The distal end of the rod 3 is easy to clean.

The protective cap 4 can be together with movement element 2 disposed of after use.

The the surfaces of the optic extension 12 are flat and can be easily cleaned.

Thus, the endoscope according to the invention forms the possibility that a transmission of germs, etc., with which the endoscope came into contact when the endoscope is used, is avoided the next time it is used on the next patient.

The protective cap 4 can be designed and disposed of as a single-use part together with the movement element. Alternatively, the protective cap 4 be supplied to the cleaning and sterilization.

In the endoscope head of the cable duct is sealed, the pull cable is completely sealed from the environment. The sealing of the cable duct and the cable is waterproof. This avoids that germs can penetrate into the cable channel or can come into contact with the pull rope.

alternatives

In the embodiment, the rod has 3 three in the axial direction one behind the other arranged locking lugs 30 , The number of locking lugs 30 is not limited. The pole 3 can only be a latch 30 have to in the insertion channel 23 of the moving body 2 lock. The pole 3 can have two, four or more locking lugs 30 to have.

In the embodiment, on the inner circumference of the insertion channel 23 a single nose or an annular surface provided in the Einrastvertiefungen between the locking lugs 30 the pole 3 engage. Alternatively, along the extension direction of the insertion channel 23 a plurality of lugs or annular surfaces may be provided, which are the same distance as the Einrastvertiefungen between the locking lugs 30 the pole 3 to have. This allows a higher holding force between the rod 3 and the moving body 2 be achieved.

The proximal opening of the insertion channel 23 can be closed by a seal designed as a thin plate, which only by piercing means of the rod 3 is opened.

The nose or ring surface on the inner circumference of the insertion channel 23 acts as a toothing, with the locking lugs of the rod 3 engaged. Such a toothing can be designed so that it arises due to the deformation of the material when piercing the seal, wherein the material of the toothing in between the locking lugs 30 flows in between.

The feather 9 is formed in the embodiment as a spiral spring. Any suitable other biasing means may be used instead of the spring 9 to get voted. The pretensioner need only be able to move the body 2 to bias in the distal direction.

Instead of biasing in the distal direction biasing means can also be applied in the proximal direction biasing biasing means. Then, the traction cable must be formed as a sufficiently rigid sliding member which can overcome the bias of the biasing in the proximal direction biasing means and the moving body 2 can push in the distal direction.

In the embodiment, the rod 3 of the moving body 2 with a pull cable which can be actuated from the proximal side in the proximal direction drawable and movable by the spring in the distal direction. Alternatively, in the endoscope, the rod channel can be guided to the proximal operator side and the rod can be elastic and extend to the proximal operator side. Then can be dispensed with the cable and the biasing device. The reciprocating motion of the moving body 2 is then directly generated on the proximal operator side of the endoscope by advancing and retracting the proximal end of the elastic rod.

In another alternative can in on the 1 to 4 upper end of the tool guide surface 20 an extending in the proximal direction survey are provided, the one through the working channel 11 along the tool guide surface 20 pushed micro-tool can be bent in the proximal direction. The elevation causes an advanced micro-tool to be bent more in the proximal direction.

In the embodiment, the rod channel 13 the seal 16 intended. That is the seal 16 sits in the housing 15 sealing on the outer circumference of the rod 3 and the pole 3 moves relative to the seal 16 , Alternatively, a structure can be selected in which the seal 16 on the outer circumference of the rod 3 is firmly formed and with the rod 3 relative to the housing, ie relative to the rod channel 13 emotional. This is the seal 16 from the proximal to the distal movement position of the moving body 2 caulk.

In the embodiment, the moving body 2 in the cap 4 integrated. In an alternative, the moving body 2 from the cap 4 be separated. In this alternative is not the cap 4 through the pole 3 relative to the endoscope head 1 pushed back and forth, but only the one in the cap 4 housed on the distal end of the pole 3 deferred movement body 2 ,

In the exemplary embodiment, a latching connection between the locking lugs 30 of the rod takes place 3 and the corresponding locking means (nose or ring surface) on the inner circumference of the insertion channel 23 of the moving body 2 , Alternatively, at the distal end of the rod 3 an external thread can be provided, and on the inner circumference of the insertion channel 23 of the moving body 2 an internal thread can be provided, and the rod 3 gets into the insertion channel 23 screwed.

In a further alternative, instead of the latching connection between the locking lugs 30 the pole 3 and the corresponding locking means (nose or ring surface) on the inner circumference of the insertion channel 23 a magnetic connection can be provided. At the distal area of the pole 3 a magnetic element may be arranged, and at the area of the moving body 2 , the insertion channel 23 surrounds, a counter-magnet element may be arranged.

In the embodiment forms the rod 3 the tensile body. Alternatively, a pull rope or a pull wire (control wire) may form the tension body, at its distal end, one at the distal side of the distal exit opening 111 arranged end body with the locking lugs 30 connected is. Such an alternative tensile body has a smaller outer diameter in the endoscope. The rod channel 13 is then a Zugseilkanal.

The Seilzugfeineinstellstruktur invention, by the locking lugs 30 the pole 3 and on the inner circumference of the insertion channel 23 provided nose or ring surface is formed, can be applied to any type of cable control for an endoscope. For example, the cable fine adjustment structure according to the invention can be used for fine adjustment of a traction body for deflecting a bending unit of a parent endoscope or secondary endoscope, for fine adjustment of a traction body of an Albarranhebelauslenkung or for fine adjustment of a traction body of a deflectable optical module.

The cable fine adjustment structure may be at a proximal inner peripheral portion of the cap 4 have an inwardly projecting projection as a stop, which at the distal end of the housing 15 of the endoscope head 1 is applied when the rod is pulled in the proximal direction to the locking projection (nose or the annular surface on the inner circumference of the insertion channel 23 ) to break.

The principle of the cable fine adjustment structure can be used with any type of cable guide that is applicable in an endoscope.

The invention is applicable to a duodenoscope. The principle of the invention can also be applied to an ultrasound endoscope and to any other type of endoscope.

LIST OF REFERENCE NUMBERS

1

endoscope head

2

moving body

3

pole

4

protective cap

9

feather

11

working channel

12

optic extension

13

bar passage

14

spring seat

15

casing

16

poetry

17

lighting device

18

camera

20

Werkzeugleitfläche

22

base section

23

introduction channel

30

locking lug

31

tapering forehead section

32

ring section

33

shoulder surface

38

disc

41

window

42

distal opening

111

distal exit opening of the working channel

131

Diameter extension of the bar channel

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 19627016 C1 [0006]

Claims (16)

Endoscope with an endoscope head (1) with a working channel (11) for guiding micro-tools, and a tool guide surface (20), on which a tool, which can be guided through a working channel of an endoscope, can come into contact in order to be deflected in the lateral direction of the endoscope head, wherein on the endoscope head (1) in the longitudinal direction of the endoscope head (1) back and forth movable movement body (2) is guided, which has the Werkzeugleitfläche (20). Endoscope according to Claim 1 , wherein the movement body (2) at the distal end portion of the endoscope head (1) on the outer circumference of the endoscope head (1) is guided. Endoscope according to one of Claims 1 or 2 , wherein the movement body (2) on the endoscope head (1) is tight. Endoscope according to one of Claims 1 to 3 wherein the tool guide surface (20) at the lateral outer edge region has a protrusion extending in the proximal direction, by which a tool guided on the tool guide surface (20) is bent in the proximal direction. Endoscope according to one of Claims 1 to 4 , wherein the endoscope head (1) has a train body (3) which can be actuated from the proximal side, and the movement body (2) is reciprocally movable on the endoscope head (1) by the tension body (3). Endoscope according to Claim 5 , wherein the moving body (2) of the tension body (3) for actuating the moving body (2) is separable. Endoscope according to Claim 5 or 6 , wherein at the distal region of the traction body (3) a force transmission element (30) is arranged, which communicates with the inner periphery of the moving body (2). Endoscope according to Claim 5 or 6 , wherein at the distal region of the pulling body (3), a magnetic element is arranged, and on the moving body (2), a counter-magnetic element is arranged. Endoscope according to Claim 5 or 6 , wherein at the distal region of the pulling body (3), a thread is formed, and on the moving body (2) is formed a matching mating thread. An endoscope having a cable fine adjustment structure for an endoscope head (1), with a blocking mechanism (30), in which a tensile body (3) applied to an endoscope can be guided freely in the distal direction, but the movement of the tensile body (3) in the proximal direction is blocked. Endoscope according to one of Claims 1 to 9 , comprising a cable fine adjustment structure for an endoscope head (1), the cable fine adjustment structure comprising a blocking mechanism (30) in which a tensile body (3) applied to an endoscope is free to be guided in the distal direction, but the movement of the tensile body (3) in the proximal direction is blocked. Endoscope according to Claim 10 or 11 wherein the blocking mechanism (30) is irreparably disabled when the pulling body (3) is pulled in the proximal direction with a force exceeding a predefined limit. Endoscope according to one of Claims 10 to 12 in that the blocking mechanism (30) has at least one blocking projection which blocks a movement of a locking lug (30) attached to the pulling body (3) in the proximal direction. Endoscope according to Claim 13 wherein the blocking projection and / or the locking lug (30) breaks when the pulling body (3) is pulled in the proximal direction with a force exceeding a predefined limit value. Endoscope according to one of Claims 11 to 14 wherein the Seilzugfeineinstellstruktur is a Seilzugfeineinstellstruktur for fine adjustment of at least one traction body for deflecting a Abwinkelungseinheit a mother endoscope or secondary endoscope, for fine adjustment of at least one traction body Albarranhebelauslenkung or fine adjustment of at least one traction body of a deflectable optical module. Endoscope according to one of Claims 1 to 15 , where the endoscope is a duodenoscope.

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