WO2017025435A1

WO2017025435A1 - Endoscope head, endoscope, cap and cap forming method

Info

Publication number: WO2017025435A1
Application number: PCT/EP2016/068662
Authority: WO
Inventors: Anh Minh Do
Original assignee: Digital Endoscopy Gmbh
Priority date: 2015-08-07
Filing date: 2016-08-04
Publication date: 2017-02-16
Also published as: CN110251054B; CN110251054A; JP2018517441A; DE102015113020B4; CN108040463A; DE102015113020A1; CN108040463B; JP6796080B2

Abstract

The invention relates to an endoscope head (1) having an endoscope head body (11A, 11B) in which at least one working channel (13) is formed, a pivotable Albarran lever (2) being provided at the distal working channel end section. At the Albarran lever (2) is anchored a control cable body (7, 71) by means of which the Albarran lever (2), supported on the endoscope head body (11A, 11B), can be pivoted.

Description

Endoscope, endoscope, cap and cap formation method

description

The present invention relates to an endoscope head with an endoscope head body, in which at least one working channel is formed, wherein on the distal side of the endoscope head body a pivotable albaran lever is provided. Furthermore, the invention relates to an endoscope with such an endoscope head, to a cap for the endoscope and to a cap forming method.

Such an endoscope head body can be used in a duodenoscope, ie an endoscope for examining e.g. the esophagus or the duodenum, the bile duct, bile, pancreatic duct, pancreas, etc. are applied.

With the help of the duodenoscope, it is possible to enter the duodenum through the esophagus, the stomach and the stomach outlet.

The duodenoscope has a lateral (lateral) optic (illumination device and camera). This may complicate insertion and advancement through the esophagus, as no "forward" viewing is readily possible, only in the stomach or duodenum is there sufficient room to angle the distal end of the duodenoscope through about 90 °, and so on to be able to look ahead.

The duodenoscope also has at the output of the working channel an albaran lever, which allows pivoting a targeted deflection of the tools that are pushed through the working channel.

After the use of the duodenoscope this is subjected to a treatment. This must reliably transfer all microorganisms such as Exclude bacteria, viruses, fungi, worms and spores. During reprocessing, the duodenoscope is first cleaned manually in order to remove organic material or chemical residue without residue. After cleaning, a machine disinfection or sterilization takes place.

It is the object of the present invention to provide an endoscope head with an endoscope head body, which makes adhesion of organic material, etc. difficult. It is another object of the present invention to provide an improved endoscope, a cap for an endoscope, and a capping method.

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

In the endoscope head according to the invention with an endoscope head body in which at least one working channel is formed, a pivotable albaran lever is provided on the distal working channel end portion. At the Albaranhebel a cable body is anchored, supported by the Albaranhebel can be pivoted supported on the endoscope head body.

Thus, the albaric lever can pivot relative to the endoscope head body by being actuated directly by the cable.

As a result, the entire structure of the endoscope head is greatly simplified. On undercuts and difficult-to-clean places in connection with the complicated shape of a previous Albaranhebels, which had a separate pivoting element is omitted. Therefore, the endoscope head can be cleaned more easily. Impurities on the endoscope head can be better removed. Patients are better protected from germs that originate from a former endoscope head.

At the endoscope head, a protective sheath can be arranged between the endoscope head body and the anchoring point of the cable pull body on the albaran lever, and the cable pull body can run inside the protective sheath. At Endo Skopkopf the protective jacket can form a closed space for the cable body from the endoscope head body to the Albaranhebel.

At the endoscope head body, a joint body may be arranged, on which the Albaranhebel is articulated. The proximal end of the hinge body may seat on the endoscope head body, and the distal end of the hinge body may form a joint, along with a proximal portion of the albaric lever, on which the albaric lever may pivot relative to the endoscope head body. The albaran lever can pivot around the joint body. This leads to a simple structure in which the Albaranhebel is pivoted directly by located in him Seilzugende.

The joint body and the proximal portion of the Albaranhebels may be surrounded by an elastic protective sheath. The elastic protective jacket bends when swinging with the joint body and the proximal portion of the Albaranhebels. As a result, any undercuts of the joint body and the proximal portion of the Albaranhebels are not exposed to the environment. Both in the non-pivoted and in the swung-out position, germs and foreign substances do not penetrate through the protective jacket into the joint body and the proximal section of the albaran lever. Preferably, the protective jacket has a cuboid or tubular shape. The outer surface of the protective jacket is easy to clean. Therefore, the endoscope head can be even more easily reprocessed.

The joint body may have a guide for a cable pull of the cable pull body. The guide can be hidden inside the joint body. As a result, the cable can be safely guided and protected from the environment inside the joint body. Thus, a structure is possible through which the cable is exposed to no contamination.

The endoscope head may further include a distal push-on cap. The working channel end piece may be pivotally mounted relative to the cap. The distal push-on cap may have an opening corresponding to a working channel end opening. The distal push-on cap can surround the distal end of the endoscope head and the pivotable working channel end piece in the state pushed on the endoscope head. The distal push-on cap may be disposable. For example, it is formed of a low-cost silicone material.

By the interaction of the endoscope head body with the pivotable relative to him Albaranhebel and the cap, a solution is created by the good Wiederaufbereitbarkeit the simply constructed endoscope head body and a disposability of the endoscope head body surrounding protective cap are combined.

An endoscope according to the invention is provided with an endoscope head discussed above.

A cap according to the invention which is applicable to a distal end of an endoscope having a pivotable albaran lever in the head of the endoscope has a bottomed cylinder with an endoscope head insertion opening on the side opposite the bottom, and a window in the peripheral wall of the endoscope cylinder.

On the cap, on the side opposite to the bottom, the cylinder may have latching means on the inside of the cylinder.

On the cap, the cylinder may be rounded at the distal side of the bottom to facilitate insertion of the endoscope head into an object.

The cap can be made of plastic. The cap can be made of plastic by means of 3D printers or injection molds.

A cap forming method according to the invention for forming a cap applicable to a distal end of an endoscope having a pivotable albaric lever in the head of the endoscope, the cap having the following comprising: a bottomed cylinder having an endoscope head insertion hole on the side opposite to the bottom, and a window in the peripheral wall of the cylinder, comprising: forming the plastic cap. The cap can be formed by means of 3D printer or plastic injection molds.

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

Brief description of the drawings

1 shows a perspective view of an endoscope head according to the invention of a first embodiment in the assembled state.

FIG. 2 shows a perspective view of the endoscope head according to the invention of the first exemplary embodiment with the cap detached. FIG.

Fig. 3 shows a cutaway perspective view of the endoscope head according to the invention of the first embodiment viewed from the proximal side.

Fig. 4 is a cutaway perspective view of the endoscope head of the first embodiment of the invention as viewed from the distal side.

5 shows a side view of the endoscope head according to the invention of the first embodiment in which the albaran lever is in the rest position.

6 shows a side view of the endoscope head according to the invention of the first embodiment, in which the albaran lever is pivoted.

FIG. 7 shows a plan view of the endoscope head according to the invention in the rest position of FIG. 5th FIG. 8 shows a plan view of the endoscope head according to the invention, similar to that in FIG. 7 with attached protective tube 8.

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

First, the construction of the endoscope head of the embodiment of the present invention will be described with reference to Figs. FIGS. 1 to 8 each show views of the embodiment of the endoscope head 1 according to the invention.

FIG. 1 shows the endoscope head 1. An endoscope head body 11 is surrounded by a cap 3, which has a lateral opening 31. The lateral opening 31 provides a view of a camera 16 and a lighting device 17 and an albaran lever 2 of the endoscope head body 11. The Albaranhebel 2 is actuated by a cable 7.

FIG. 2 shows the endoscope head 1 with the cap 3 removed.

The endoscope head 1 has the endoscope head body 11 which consists of a cylindrical base body I IA on the proximal side and an extension I IB running distally from the base body I IA.

In the extension IIB, a camera 16 and a lighting device 17 are provided laterally aligned in a known manner. At the distal end, the extension I IB has a rounded end face 14.

In the cylindrical base body I IA at least one working channel 13, a cable channel 15 for the cable 7 and lines for supplying the camera 16 and the lighting device 17, etc. are provided.

The working channel 13 and the cable duct 15 each extend inside the base body I IA. The cable channel 15 leads the cable 7 for actuating a pivotable Albaranhebels 2. The working channel 13 performs micro tools for examining eg the esophagus or the duodenum, the bile duct, the bile, the pancreatic duct, the pancreas etc.

In the present embodiment, for reasons of space, the working channel 13 and the cable channel 15 can run obliquely in the interior of the base body I IA. As shown in Figs. 3 and 4, a structure may be adopted in which the working channel 13 is smoothly bent radially inwardly from the proximal side to the distal side of the base body I IA so as to approximate to the distal side of the base body I IA centric, ie comes out approximately at the central axis of the endoscope body 1; and wherein the cable channel 15 extends obliquely radially inwardly from the proximal side to the distal side of the base body I IA so that it is closer to the entrance to the proximal side of the base body I IA on the distal side of the base body I IA closer to the central axis of the endoscope body 1 out.

The base body I IA has a distal surface 18, on which the extension I IB is formed integrally therewith. Arranged on the distal surface 18 via a base body projection is the pivotable albaran lever 2 described below, which extends in the distal direction parallel to the extension I I B.

In operation, the cap 3 can be set to the endoscope head 1, which surrounds the extension I IB and the pivotable Albaranhebel 2 and on the outer circumference of the base body I IA releasably z. B. latching can be attached. The cap has the opening 31 as a side open window through which the camera 16, the illumination device 17 and at least the distal end portion of the pivotable Albaranhebels 2 are exposed to the outside. On its outer circumferential surface, the base body I IA is provided with a parallel to the proximal end side of the base body I IA extending groove 12, which can be used as a locking groove for the cap 3. The cap 3 has at its proximal portion a latching projection 32 which is engageable with the groove 12 to secure the cap 3 to the base body I IA.

Arranged on the distal surface 18 is a cuboid base body projection 41 extending in the distal direction. The base body projection 41 can on the distal surface 18 screwed, glued, pressed, clamped or otherwise secured. The base body projection 41 has a distal nose 44 located on a radially outer side of the base body projection 41 and facing in the distal direction. At the distal nose 44, a bore 42 is provided, in which a later described a pivot pin forming pin 5 is seated.

Further, the base body projection 41 has a cable duct 43 located on a radially inner side of the base body projection 41 and extending parallel to the center axis of the endoscope body 1. The cable channel 43 is radially inwardly relative to the bore 42, i. offset from the central axis of the endoscope body 1. The bore 42 extends in a direction which is perpendicular to the cable channel 43, as shown in FIG. 3 is shown.

In the bore 42 is seated a pin 5, as shown in FIGS. 5 and 6 is shown. The pin 5 forms a pivot point for the pivoting movement of the Albaranhebels second

The albaran lever 2 is disposed on the distal side of the base body projection 41. The albaran lever 2 has an albaran lever main body 21 with an albaran lever protrusion 22 protruding to the proximal side.

More specifically, the albaran lever projection 22 has two parallel side sidings 27 formed in the proximal direction as sidewalls. The albaran lever projection 22 thus has a fork-head-like shape. The side extensions 27 have on the radially outer side of a bore 26 for the pin 5. The distal nose 44 of the base body projection 41 is disposed between the two side extensions 27 so that the holes 26 and 42 are aligned with each other, the pin 5 non-slip in the Holes 26 and 42 is fitted. In other words, the side extensions 27 sandwich the distal nose 44 of the base body projection 41. On the outer side of the side extensions 27, the pin 5 can be secured by snap rings. The pin is rotatably disposed in the bores 26 and 42. The Albaranhebel 2 further has a cable channel 23 which extends parallel to the central axis of the endoscope body 1 in the rest position of the Albaranhebels 2. The rest position of the Albaranhebels 2 is shown in Figures 1-5 non-pivoted position of the Albaranhebels 2. The side extensions 27 of the Al baranhebelvorsprungs 22 each extend laterally outside of the cable channel 23. The cable channel 23 is aligned with the cable channel 43. The cable channel 23 is provided as a through hole in Albaranhebel 2. The cable channel 23 has a diameter extension on the distal side of the Albaranhebels 2. The diameter extension results from a bore 28 from the distal side of the Albaranhebels 2, which has a larger diameter than the cable channel 23. The cable channel 23 and the bore 28 are aligned with each other. The diameter extension at the transition to the bore 28 serves as a stop surface for a cable nipple 71, which forms the distal end of the cable 7.

In Albaranhebel 2 the cable nipple 71 is integrated as a cable end so that the cable 7 runs parallel to the central axis of the endoscope body 1. The cable end may be formed as a nipple 71 or alternatively as a diameter extension of the cable 7 and is seated in the bore 28th

The Albaranhebel 2 further has a working channel surface 24, to which in the rest position of the Albaranhebels 2 shown in Figures 1-5 the working channel 13. The working channel surface 24 is thus located on an extension of the working channel 13. The working channel surface 24 has an extension direction of the Endoscope head 1 provided curvature, which ends at a distal end 25 of the working channel surface 24. The working channel surface 24 is curved inward, that is concave.

The working channel 13 is aligned with the working channel surface 24 so that a guided through the working channel 13 tool such as a guide wire is lifted by the bending of the working channel 13 in the base body I IA and further advancing in the distal direction with the working channel surface 24 of the Albaranhebels 2 in contact arrives. The outer circumference of the base body projection 41 and the Albaranhebelvor- jump 22 are covered by a tight-fitting continuous elastic hose member 8 as a protective jacket. Inside the hose element 8, the cable pull 7 runs. The hose element 8 thus forms a closed cuboid space from the proximal side of the base body projection 41 to the distal side of the albaran lever projection 22.

The cap 3 detachable from the endoscope head body I IA, I IB is designed as a bottomed cylinder. The bottom of the cap 3 is at its distal side. The cap 3 is placed in the application to the endoscope head body I IA, I IB, as shown in FIG. 1 is shown. In the region of the bottom, the cap 3 is rounded so that it meets the requirements for inserting the endoscope head 1 into an object to be examined.

The cap 3 has the in Fig. 1 to the viewer facing opening 31. The opening 31 of the cap 3 forms the side open window for the camera 16 and the illumination device 17 and guided through the working channel 13 tools in the application of the endoscope head first

At the proximal end, the cap 3 has on its entire circumference the inwardly protruding latching nose 32, see FIG. 4, which is designed trapezoidal as shown or alternatively may be designed as a curve or curvature. This latching nose can engage the groove 12 of the base body I IA of the endoscope head body when the cap 3 is placed on the endoscope head body I IA, I IB.

application

Hereinafter, the function and application of the endoscope head of the embodiment of the present invention will be described with reference to Figs.

Fig. 5 shows the endoscope head in the rest position, in which the Albaranhebel 2 is not pivoted. At the proximal side of the endoscope, the cable 7 with a control such. B. a joystick connected. In the rest position no force is applied to the cable 7.

When the cable 7 at the proximal side, e.g. is pulled by pivoting the joystick, the cable end 71 is pulled to the proximal direction. Therefore, a force acting in the proximal direction is applied to the albaran lever 2. Since the Albaranhebel 2 is supported on the Albaranhebelvorsprung 22 via the pin 5 on the base body projection 41 and the pin 5 forms a rotation axis, the Albaranhebel 2 is pivoted relative to the base body I IA of the endoscope head body so that it is to the pivot point formed by the pin 5 opposite side of the endoscope head body I IA, I IB moves.

Thus, in the swinging operation, the albaran lever protrusion 22 pivots about the pin 5 held by the base body protrusion 41. During the entire swinging operation, the elastic tube member 8 covers the outside of the albaran lever protrusion 22 and the base body protrusion 41.

Due to the pivoting action of the Albaranhebels 2 pushed through the working channel 13 tools receive a side deflection.

The pivoting direction is predefined by the arrangement of the pivot point formed by the pin 5 and the cable 7 in the Albaranhebel 2. The pivot angle of the pivotable Albaranhebels 2 is determined by the traversed distance of the cable 7. The swivel angle of the swiveling Albaranhebels 2 can exceed 90 ° and can even be up to 160 °.

The seen in its longitudinal direction center of serving as a pivot member pin 5 intersects a plane in which the cable 7 and the central axis of the endoscope head body I IA, I IB extend.

The albaran lever 2 is pivotable relative to the endoscope head body I IA, I IB very advantageous. The pivot point on the pin 5 and the physical design of the Albaranhebels 2 are chosen so that in the pivoted position of the Albaranhebels 2, the distal end 25 of the working channel surface 24 in longitudinal direction direction of the endoscope head body 11 may even be located proximally relative to the pivot point 5 of the Albaranhebels 2, see FIG. 6th

advantages

The endoscope head 1 is easy to clean and reprocess. Any undercuts or unfavorable to reach places, such as. B. arise on a conventional Albaranhebel are not present on the endoscope head 1. The rinsing liquid for cleaning can flow around the endoscope head 1 with ease and remove foreign matter.

When re-applying the endoscope head 1, a new cap 3 is simply placed. As a result, contamination on the endoscope head 1 can be even better avoided. Patients are better protected from germs that originate from a former endoscope head.

The hose member 8 protects the outer periphery of the base body projection 41 and the Albaranhebelvorsprungs 22. Thus, the interior of the hose member 8, in which the cable runs 7 between the base body projection 41 and the Albaranhebelvorsprung 22, does not come into contact with the environment. For cable 7 thus reach no germs and impurities.

Even at the bore 28 get no germs and impurities to the cable 7, since the nipple 71 rests as a cable end of the diameter extension.

In the swivel end position of the pivotable working channel element 30, the distal end of the working channel on the ring element 33 can be pivoted by more than 90 ° relative to the base body I IA and to the extension I IB. As a result, the user has a much greater latitude in handling. For example, the insertion of a tool z. B. in the bile duct greatly facilitated when the endoscope head body is positioned in the duodenum opposite the exit of the bile duct.

Other alternatives For fixing the cap on the endoscope head body 11, a groove on the endoscope head body is described, in which engages a latching nose of the cap. In order to engage the cap on the endoscope head body 11, the groove may be circumferentially or partially provided on the circumference. Instead of the groove, one or more latching recesses may also be provided on the circumference of the endoscope head body 11. On the proximal side of the cap, one or more radially inwardly projecting latching projections may be provided instead of a (circumferential or sectionally provided) latching nose, which are adapted in terms of position and shape to the Einrastvertiefungen on the circumference of the endoscope head body 11. As a result, the precise positional relationship of the cap relative to the endoscope head body 11 can be predefined when the cap is pushed on.

In the exemplary embodiment, in the base body IA, the working channel 13 and the cable channel 15 extend radially inwardly from the proximal side to the distal side of the base body I IA so that they are relative to the entry on the proximal side of the base body I IA on the distal side of the base body I IA offset closer to the central axis of the endoscope body 1 point out. In an alternative, the working channel 13 and / or the cable channel 15 in the base body I IA can be straight, wherein the exit on the distal side of the base body I IA can be approximately as shown in Figures 3 and 4. It is sufficient that the working channel 13 faces the working channel inner surface 24 of the Albaranhebels 2 when it is at rest. The cable ducts 15, 43 and 23 may extend along a line which is parallel to the central axis of the endoscope body 1 and is sufficiently spaced from the center axis of the endoscope body 1 from the pivot point formed by the pin 5, that sufficient pivoting moment for pivoting the Albaranhebels 2 by the cable 7 can be generated.

Between the base body projection 41 and the Albaran lever main body 21 may be arranged a return spring, which biases the Albaranhebel 2 in the rest position. The cable nipple 71 may be arranged in the Albaranhebel 2 so that it can not slide in the bore 28. As a result, when the cable 7 is sufficiently rigid, the albaran lever 2 can be brought into the rest position by pressing the cable 7 on the proximal side of the endoscope to the distal side.

The base body protrusion 41 may have a cylindrical outer shape, and the side extensions 27 may be curved outward on the outer sides to give a cylindrical outer shape of the Albaran lever protrusion 22. The overlying elastic tube 8 then has a cylindrical shape.

In the bore 28 on the distal side of the Albaranhebels 2 sits the cable nipple 71, which forms the distal end of the cable 7. The bore 28 may be closed at the distal side of the Albaranhebels 2 by a bore 28 sealing plug.

In the exemplary embodiment, the pin 5 can be secured by snap rings on the outside of the side extensions 27. In this case, the pin 5 is rotatably mounted in the bore 42 of the base body projection 41 and in the bore 26 of the side extensions 27. Alternatively, the pin 5 is seated in the bore 42 of the base body projection 41 in a press fit and is rotatably mounted in the bore 26 of the side extensions 27; or the pin 5 is rotatably mounted in the bore 42 of the base body projection 41 and is seated in the bore 26 of the side extensions 27 in a press fit.

The invention is not only applicable to a duodenoscope. The principle of the invention can also be applied to an ultrasonic endoscope.

In the exemplary embodiments, a working channel with an albaran lever is shown at the end of the working channel. The invention can also be applied to endoscopes having a plurality of working channels, each with an albaran lever at the end of the respective working channel.

The explained alternatives can be combined as desired and can be used in all embodiments. The endoscope of the exemplary embodiments explained above can be designed as a flexible endoscope for the intestinal tract. The endoscope has an operating part and an insertion section. The operating part is located on the proximal side and the insertion section is located on the distal side of the endoscope. The control panel (not shown in the drawings) includes an operating lever (such as a joystick or a simple lever rod) for actuating the albaran lever, a working channel inlet, and a knob for bending an angled portion of the endoscope. The operating part is connected to a video processor, a light source device and a display device, and the like.

The insertion section is a long tube-like element. The proximal end of the insertion section is connected to the control panel. The insertion portion has a flexible portion, the angled portion and a cap in this order from the operating portion. The flexible section is elastic. The angled portion is angled in response to an actuation of the adjusting knob. At the distal end of the Abwinklungsabschnittes a rigid end piece portion is formed. The rigid end piece section forms the so-called endoscope head.

The cap covers the endoscope head from the distal side of the endoscope head. The cap is in the form of a bottomed cylinder having an opening on the side where the cap covers the endoscope head. Thus, the cap can be easily pushed onto the endoscope head.

The cap is made of plastic, for example.

Preferably, the cap is made of plastic, for example by means of 3D printer or injection molding. By manufacturing using 3D printers or injection molding, the cap can be manufactured accurately but still at low cost. Other suitable manufacturing methods can be adopted, as long as they allow accurate and cost-effective production. The albaran lever is actuated by means of the actuating lever on the proximal side of the endoscope. The cable connects the operating lever and the albaran lever.

In the endoscope head, the cable inside the endoscope, i. guided within the control panel and the insertion section. In the endoscope head the cable duct is provided for guiding the last section of the cable, as shown for example in Figures 3 and 4. In the distal end portion of the cable duct, the cable is disposed within the protective jacket 8 and in the cable channel 23 of the Albaranhebels. The end of the cable is inserted in the bore 28. The end of the cable is sealed in the bore 28. More specifically, the cable nipple 71 is sealed to the distal end of the cable in the bore 28 so that the area of the cable channel is sealed proximally from the cable nipple 71. By this construction, the cable duct is sealed, the cable is completely sealed from the environment. The sealing of the cable duct and the cable is waterproof. In addition, the cap is completely independent of the cable.

LIST OF REFERENCE NUMBERS

1 endoscope head

2 albaran bodies

3 cap

5 pen

7 cable

8 protective jacket

11 endoscope head body

I IA base body

I IB extension

13 working channel

14 rounded face

15 cable channel in the base body

16 camera Lighting device distal surface of the base body

Albaranhebelkörper

Albaranhebelvorsprung

Cable duct in albaran lever

Working channel inner surface of the Albaran lever distal end

pin hole

page extension

Bore for cable nipple

Opening (window)

Snap nose of the cap

Basiskorpervorsprung

pin hole

Cable channel in base body projection distal nose

cable ends

Claims

claims

1. endoscope head (1) with an endoscope head body (I IA, I IB), in which at least one working channel (13) is formed, wherein at the distal Arbeitskanalendab- section a pivotable Albaranhebel (2) is provided;

characterized in that

on the Albaranhebel (2) a cable body (7, 71) is anchored, by the Albaranhebel (2) supported on the endoscope head body (I IA, I IB) can be pivoted.

2. endoscope head (1) according to claim 1, wherein

between the endoscope head body (I IA, I IB) and the anchoring point of the cable pull body (7, 71) on Albaranhebel (2) a protective sheath (8) is arranged and the cable pull body (7, 71) inside the protective sheath (8) runs.

3. endoscope head (1) according to claim 2, wherein

the protective jacket (8) forms a closed space for the cable pull body (7, 71) from the endoscope head body (I IA, I I B) to the albaran lever (2).

4. endoscope head (1) according to one of claims 1 to 3, wherein

on the endoscope head body (I IA, I IB) a joint body (41) is arranged, on which the Albaranhebel (2) is articulated.

5. endoscope head (1) according to claim 4, wherein

the proximal end of the joint body (41) is seated on the endoscope head body (I IA, I IB) and the distal end of the joint body (41) together with a proximal portion (22) of the albaran lever (2) forms a joint on which the albaran lever (2 ) can pivot relative to the endoscope head body (I IA, I IB).

6. endoscope head (1) according to claim 5, wherein the joint body (41) and the proximal portion (22) of the Albaranhebels (2) are surrounded by the protective sheath (8), wherein the protective sheath (8) is elastic.

7. endoscope head (1) according to one of claims 4 to 6, wherein

the joint body (41) has a guide (43) for a cable pull (7) of the cable pull body (71).

8. endoscope head (1) according to one of claims 4 to 6, wherein

the endoscope head (1) further has a distal push-on cap (3),

the albaran lever (2) is pivotally mounted relative to the cap (3), and the distal push-on cap (3) has an opening (31) corresponding to a working channel end opening.

9. endoscope with the endoscope head (1) according to one of claims 1 to 8.

10. Cap (3), which is applicable to a distal end of an endoscope having a pivotable albaran lever (2) in the head of the endoscope, with

a bottomed cylinder having an endoscope head insertion opening on the side opposite to the floor, and

a window (31) in the peripheral wall of the cylinder.

11. cap (3) according to claim 10, wherein

on the side opposite to the bottom, the cylinder has a latching device on the inside of the cylinder.

12. cap (3) according to claim 10 or 11, wherein

on the distal side of the bottom of the cylinder is rounded to facilitate insertion of the endoscope head into an object.

13. cap (3) according to any one of claims 10 - 12, wherein

the cap (3) is made of plastic.

14. cap (3) according to any one of claims 10-13, wherein

the cap (3) is made of plastic by means of 3D printers or injection molds.

A cap forming method of forming a cap (3) applicable to a distal end of an endoscope having a pivotable albaran lever (2) in the head of the endoscope, the cap (3) comprising:

a bottomed cylinder having an endoscope head insertion opening on the side opposite the floor, and

a window (31) in the peripheral wall of the cylinder;

the method comprising:

Forming the cap (3) made of plastic.

The capping process of claim 15, further comprising:

Forming the cap (3) made of plastic by means of 3D printer or injection molding.