CN114343544A - Endoscope with movable front end - Google Patents

Abstract

The invention relates to the technical field of endoscopes and discloses an endoscope with a movable front end, which comprises a main pipe, at least one elastic deformation part, a driving unit and a camera shooting part, wherein the main pipe is provided with a main pipe body; the main pipe comprises a bending part and a main pipe cavity channel, the bending part is used for bending the front end of the main pipe, and the main pipe cavity channel is used for inserting a working tool therein; the elastic deformation part can shield the outlet of the main pipe cavity; the driving unit is used for applying acting force to the elastic deformation part to cause the elastic deformation part to generate elastic deformation and generate radial movement along the main pipe shaft, so that the elastic deformation part moves away from or moves back to the outlet of the main pipe cavity; an imaging unit for observing a subject; the image pickup part is arranged on the elastic deformation part or is independent of the elastic deformation part and is rigidly connected with the main pipe. The endoscope with the movable front end can increase the size of the working channel and use an image sensor with larger size under the condition of not influencing the insertability and operability of the endoscope in a human body lumen, thereby improving the efficiency of a doctor in using the endoscope for treatment.

Description

Endoscope with movable front end

Technical Field

The invention relates to the technical field of endoscopes, in particular to an endoscope with a movable front end.

Background

The endoscope is a common medical instrument integrating traditional optics, precision machinery and an electronic circuit, can enter the stomach through a mouth or enter the body through other natural orifices, is used for observing pathological changes of tissues and organs in the human body, such as stomach, esophagus, duodenum, colon and rectum, and can see pathological changes which cannot be displayed by other medical equipment such as CT, ultrasonic and nuclear magnetic resonance imaging by using the endoscope, thereby assisting doctors to carry out more exact diagnosis on the pathological conditions of patients.

At present, the end part of an endoscope head comprises a camera, an illuminating window, a flushing nozzle and other non-working channel functional devices, the occupied space of the devices is large, the size of a working channel is limited under the condition that the outer diameter of an endoscope body is fixed, a doctor is difficult to use an appliance with a large outer diameter when operating the endoscope, and the treatment difficulty is increased. On the contrary, if a larger working channel size is ensured, the space occupied by the endoscope head end part including the camera, the lighting window, the flushing nozzle and the like must be reduced, and only a smaller image sensor can be used, so that the imaging effect is reduced, and the image sensor is more difficult to select. If the size of the working channel or the size of the image sensor is increased by directly increasing the outer diameter of the endoscope body of the endoscope, a larger space of a natural cavity of a human body is occupied, and discomfort is added to a patient in the process of inserting the endoscope.

Chinese patent publication CN105636494B discloses a "bending portion of an endoscope". In general, an insertion portion of an endoscope is provided with a distal end portion, a bending portion, and a flexible tube portion in this order from the distal end side. The distal end portion incorporates therein an image pickup unit having an image pickup element (CCD, CMOS, etc.), and is provided with an optical fiber and a lens flushing nozzle, thereby constituting an observation portion on the distal end surface of the distal end portion. The bending portion of the insertion portion has a node ring group (bending tube) as a skeleton structure thereof, and the node ring group (bending tube) arranges a plurality of node rings (bending pieces) in a line along a central axis of the insertion portion. A pull wire routed from an endoscope operation section or the like is connected to a node ring on the distal end side of the bending section, and the bending section can be bent in a predetermined direction by the pull force of the pull wire. A plurality of endoscope built-in articles such as an optical fiber bundle, a signal cable for transmitting various signals, a shield cable, and various tubes are inserted through the insertion portion. Connect the cable of endoscope module of making a video recording among the traditional endoscope, the optic fibre of connecting the illumination window etc. is cylindricly for the endoscope is responsible for interior space utilization and is hanged down.

US patent publication No. US5489256 discloses a "sterilizable endoscope with detachable disposable tube assembly" having two separate parts, a channel portion and an image pick-up portion, which are assembled together in abutment before use. The working channel part is disposable, and the camera shooting part can be reused. The patent separates working channel and camera shooting part to solve the problem of inconvenient disinfection, but the assembling method of the channel part and the camera shooting part in the patent does not effectively increase the size of the working channel and the size of the camera shooting part.

US patent publication US6066090 discloses a "multi-branch endoscope system" having two or more branches, each of which may include illumination, an image pick-up portion, an operation channel, etc. The multi-branch structure of the patent is provided with a plurality of working channels, so that doctors can conveniently operate a plurality of working appliances during treatment, thereby facilitating the treatment; the multi-branch structure can also have a plurality of camera shooting parts, thereby improving the imaging effect. However, the multi-branch structure increases the outer diameter of the endoscope body, which can increase discomfort for patients during the insertion of the endoscope and also increase the inconvenience for doctors to operate when the endoscope is inserted into human bodies.

U.S. published patent application No. US20150230697a1 discloses a "flexible master-slave robotic endoscope system" having at least one endoscopic auxiliary instrument channel. The multiple channels of the endoscope can be used for improving the working efficiency in treatment by a plurality of endoscope auxiliary appliances; the image pickup part of the endoscope can be bent and rotated independently of the endoscope main hose, and provides a more flexible visual field during the operation of the endoscope. If this method were to maintain the size of each instrument channel consistent with the existing endoscope working channel, the outer diameter of the endoscope would need to be significantly increased, and the problem of requiring a larger size working channel would not be solved.

US published patent application US20110098529a1 discloses "a method and apparatus associated with a flexible member at a distal portion of a medical device" that includes at least one flexible member having a rotatable member, the distal end of the flexible member being configurable with a camera unit or an illumination unit, etc. When the device is advanced into the body for a surgical procedure, the pull wire pulls the rotatable member of the flexible assembly to rotate about an axis perpendicular to the longitudinal axis of the endoscope housing, moving the flexible assembly away from the axis of the opening in the endoscope housing and freeing space for the exit of the intermediate working channel. The device is convenient for use multiple instrument simultaneously, reduces the incision on the patient. This patent is similar to the present invention in the following effects: when the endoscope is inserted into a human body, the flexible component blocks the outlet of the working channel at the front end of the endoscope; when the endoscope is inserted into a human body, the rotatable member of the flexible assembly can be controlled to unfold the flexible assembly to allow the outlet of the working channel. However, the method is more suitable for a thoraco-laparoscope and is difficult to realize in a flexible endoscope entering through a natural lumen of a human body, firstly, the flexible assembly is unfolded by means of mechanical rotation, and a rotating component such as a hinge assembly/a connecting rod occupies more axial space, so that the front end is longer, and therefore, the unfolded flexible endoscope occupies larger axial and radial space in the natural lumen of the human body and is not suitable for the operation of the flexible endoscope in lumens of the human body such as esophagus, duodenum, large intestine and the like; secondly, no matter the bending part of the endoscope body is arranged at the endoscope shell or the flexible component, because the flexible component is long in the axial direction, when the front end of the endoscope is bent, the bending radius is too large, and the bending operation with a large angle is difficult to be carried out in narrow human body lumens (such as esophagus, duodenum, large intestine and the like).

U.S. published patent application No. 20190082940a1 discloses an "endoscope having a shared working channel" which delivers a plurality of tools through a working channel, a camera head or the like being delivered through a guide rail in the working channel, and after being inserted into the interior of a human body, the camera head at the distal end of the guide rail is rotated away from the outlet of the working channel following the guide rail by rotating the proximal end of the guide rail. The patent is similar to the invention in the following two effects: (1) when the endoscope is inserted into a human body, the camera occupies the space of the working channel at the front end of the endoscope without increasing the overall outer diameter of the endoscope; (2) when the endoscope is inserted into a human body, the camera rotates to leave the outlet of the working channel, so that the normal use of the working channel cannot be influenced. However, this method is difficult to implement in flexible endoscopes where the main hose is long, one is difficult to use with long rigid rails, insert in flexible endoscopes and do not affect the bending characteristics of flexible endoscopes; secondly, if a non-rigid guide rail, such as a flexible or elastic rod/wire, is used, the torque transmission is difficult, the guide rail needs to have certain diameter and toughness, the guide rail occupies certain space of the working channel, and the reciprocating rotation operation at the front end of the flexible endoscope is also complicated.

In view of the foregoing, the prior art still fails to satisfy the need for an endoscope having a larger working channel and a larger image sensor without significantly increasing the outer diameter of the endoscope body of the prior endoscope and without significantly increasing the length of the distal end of the bending portion of the endoscope, i.e., without affecting the insertability and operability of the flexible endoscope in the lumen of the human body.

Disclosure of Invention

The embodiment of the invention provides an endoscope with a movable front end, which is used for solving the problems of limited size of a working channel and limited size of an image sensor of the existing endoscope system, so as to improve the flexibility of using a working tool of the endoscope system and improve the imaging effect.

The embodiment of the invention provides an endoscope with a movable front end, which comprises a main pipe, at least one elastic deformation part, a driving unit and a camera shooting part, wherein the main pipe comprises a bending part and a main pipe cavity channel, the bending part is used for bending the front end of the main pipe, and the main pipe cavity channel is used for inserting a working tool therein; the elastic deformation part can shield an outlet of the main pipe cavity; the driving unit is used for applying acting force to the elastic deformation part to cause the elastic deformation part to generate elastic deformation to generate radial movement along the main pipe shaft so as to enable the elastic deformation part to move away from or move back to the outlet of the main pipe cavity; the imaging unit is used for observing a subject; the camera shooting part is arranged on the elastic deformation part or is independent of the elastic deformation part and is rigidly connected with the main pipe; the imaging unit includes an illumination unit for illuminating a subject.

Wherein the elastic deformation portion further comprises a connecting portion; the connecting part is arranged in the main pipe, or the connecting part is in a flat strip shape and can be freely detachably arranged outside the main pipe.

Wherein, one side of the elastic deformation part is made of rigid material, and the other side is made of elastic material with scalability; the driving unit is a pull wire and is connected with the elastic material, and the pull wire can pull the elastic material to contract, so that the elastic deformation part is bent and deformed towards one side of the elastic material.

The driving unit is a working device inserted into the main pipe cavity, and when the working device extends out of the main pipe cavity, the elastic deformation part is pushed to be elastically deformed to move along the radial direction of the main pipe shaft, so that the elastic deformation part moves away from the outlet of the main pipe cavity.

The front end face of the camera shooting part is vertical to the main pipe shaft or is an inclined plane; the front end opening end surface of the main pipe cavity channel is vertical to the main pipe shaft or is an inclined surface.

The camera shooting part also comprises a strip-shaped connecting part and a camera shooting unit, or also comprises a washing nozzle which can be used for spraying water and air on the end surface of the camera; the camera shooting unit comprises a single camera, two cameras or three cameras; the lighting unit is an LED or optical fiber light guide lighting part; the strip-shaped connecting part comprises a conducting wire, or also comprises a water pipe, or also comprises an optical fiber, and the conducting wire is used for connecting the camera and the LED; the water-air pipe is connected with the flushing nozzle, and the optical fiber is used for guiding light.

The double cameras are two color cameras, or a color camera and a black-and-white camera, or a color camera and an infrared camera; the three cameras at least comprise a black-and-white camera or an infrared camera or a fluorescent camera.

Wherein the elastic deformation part shields the outlet of the main pipe cavity channel in a natural state; when the driving unit applies acting force to the elastic deformation part, the elastic deformation part moves away from the outlet of the main pipe cavity along the radial direction of the main pipe shaft.

Wherein the elastic deformation portion is located outside the main pipe cavity outlet in a natural state; when the driving unit applies acting force to the elastic deformation part, the elastic deformation part moves towards the outlet of the main pipe cavity channel along the radial direction of the main pipe shaft and shields the outlet of the main pipe cavity channel.

The endoscope with the movable front end comprises a main pipe, an elastic deformation part, an image pickup part and an elastic deformation part driving unit. The endoscope has the advantages that the camera shooting part is modularized, and after the endoscope is inserted into a human body, the front end of the endoscope can move, so that the space of a working channel is vacated, a larger axial space of a body cavity is not occupied, and the insertability and operability of the flexible endoscope in a human body cavity are not influenced. The endoscope can increase the size of the working channel under the condition of not obviously increasing the outer diameter of the endoscope body of the existing endoscope and the length of the front end of the bending part of the endoscope, is convenient for doctors to use various medical auxiliary instruments, and improves the working efficiency in the examination and operation process of the doctors; the camera shooting part can have a larger end face, and an image sensor or a plurality of image sensors with larger sizes can be used, so that the imaging effect is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view showing a configuration of a first endoscope with a movable front end having an elastically deformable portion according to an embodiment of the present invention;

FIG. 2 is a schematic view of a combination of a main tube and an image pickup unit according to an embodiment of the present invention, in which a is a schematic view of a main tube, and b is a schematic view of a state where a distal end of an endoscope is closed when the image pickup unit and the main tube are combined;

fig. 3 is a schematic view of an image pickup portion according to an embodiment of the present invention, wherein a and b show that an end surface of the image pickup portion is a plane or an inclined surface;

fig. 4 is a schematic end view of a camera part according to an embodiment of the present invention, in which a, b, and c show that the camera unit has different numbers of cameras;

FIG. 5 is a schematic view of an elongated connecting portion according to an embodiment of the present invention;

FIG. 6 is a schematic view showing the driving manner of the elastically deforming part according to the embodiment of the present invention, in which a shows one driving manner of the endoscope distal end from the spaced-apart to the closed-up state, b shows another driving manner, and c shows another driving manner;

FIG. 7 is a schematic structural view of a first endoscope with two elastic deformation portions and movable at the front end of the endoscope, wherein a and b show the arrangement of the elastic deformation portions;

FIG. 8 is a schematic structural view of a second endoscope with two elastically deformable parts and movable forward end, in which a and b are views showing a state where a plane and a slant of an image pickup part are respectively closed at the forward end of the endoscope, and c and d are views showing a state where the plane and the slant of the image pickup part are respectively opened at the forward end of the endoscope;

FIG. 9 is a schematic structural view of a second endoscope with a resiliently deformable portion and movable at the distal end of the endoscope according to the embodiment of the present invention, wherein a and b are views showing a state where a plane and a slope of an image pickup portion are respectively closed at the distal end of the endoscope, c and d are views showing a state where the plane and the slope of the image pickup portion are respectively opened at the distal end of the endoscope, a, b and c show one mode of arrangement of the resiliently deformable portion, and d shows another mode of arrangement of the resiliently deformable portion;

FIG. 10 is a schematic structural view of a third endoscope with a resiliently deformable portion and movable at the distal end of the endoscope according to the embodiment of the present invention, wherein a shows a closed state of the distal end of the endoscope, b shows another closed state of the distal end of the endoscope, and c and d show a separated state of the distal end of the endoscope and a state where the end surface of the image pickup portion and the open end surface of the distal end of the main lumen may be flat or inclined;

FIG. 11 is a schematic structural view of a fourth endoscope with a resiliently deformable portion and movable forward end, in which a is a view showing a closed state of the forward end of the endoscope, b is a view showing a state where an image pickup portion and a main tube are detached, c is a view showing a state where the forward end of the endoscope is separated, d is a view showing a state where the forward end of the endoscope is separated when the end face of the image pickup portion is a slope, and e is a sectional view taken along line A-A in b, according to an embodiment of the present invention;

FIG. 12 is a schematic structural view of a endoscope with a movable distal end in a split-type endoscope configuration according to an embodiment of the present invention.

Description of reference numerals:

1: an insertion portion;

11: a main pipe;

111: a front duct portion; 1111: a front tube end face; 1112: a driving force device;

112: a bending section; 113: a rear pipe portion; 114: a main lumen;

12: an image pickup unit;

121: an image pickup unit; 1211: a single camera;

1212: two cameras; 1213: three cameras;

122: a lighting unit; 123: flushing the nozzle;

124: a strip-shaped connecting portion; 1241: a front end portion of the strip-shaped connecting portion;

1242: a wire; 1243: a water gas pipe; 1244: an optical fiber;

125: a front end surface of the camera shooting part; 126: a rear end face of the image pickup part;

13: a working implement; 131: a support means;

14: a first locking member; 15: a first electrical connection unit;

16: a first power connection unit; 17: an auxiliary image pickup unit;

171: an auxiliary image pickup unit; 172: an auxiliary lighting unit;

173: auxiliary flushing nozzles; 174: a long auxiliary connection portion;

18: a first elastic deformation portion; 19: a second elastic deformation portion;

2: an operation section;

21: a control unit; 22: a second locking member;

23: a second electrical connection unit; 24: a second power connection unit;

25: a pull wire; 251: closing the pull wire;

252: separating the pull wires;

others;

31: a working channel port; 32: a water gas port;

33: a connecting part fixing device.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Unless defined otherwise, technical or scientific terms used herein shall be the ordinary terms of meaning as understood by those of ordinary skill in the art to which this invention belongs. As used in this application, the terms "first," "second," and the like do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The references to "front", "back", "away", "close", "outward", "inward", etc., are based on the orientation or positional relationship shown in the drawings and are intended only to facilitate the description of the embodiments and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the embodiments of the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the endoscope with a movable distal end according to the embodiment of the present invention includes at least an insertion portion 1 and an operation portion 2. In addition, the whole endoscope system also comprises a monitor containing video and other devices which are not listed, and the detailed description is omitted.

Specifically, fig. 1 shows a first type of front end movable endoscope having one elastic deformation portion, which includes an elongated connecting portion 124 provided as an elastic deformation portion that is provided inside the main tube 11 and is independent from the main tube 11. Fig. 7 shows a first type of front end movable endoscope having two elastic deformation portions, which includes an elongated connection portion 124 that may be provided as a first elastic deformation portion and further includes a second elastic deformation portion 19, or an elongated auxiliary connection portion 174 that is provided as a second elastic deformation portion, both of which are provided inside the main tube 11 and independently of the main tube 11. Fig. 8 shows a second type of front end movable endoscope having two elastic deformation portions, a first elastic deformation portion 18 and a second elastic deformation portion 19, which are provided inside and connected to the main tube 11. Fig. 9 shows a second type of front end movable endoscope having one elastic deformation portion, and the first elastic deformation portion 18 is provided inside and connected to the main tube 11. Fig. 10 shows a third type of front end movable endoscope having one elastic deformation portion, the first elastic deformation portion 18 being provided inside and connected to the main tube 11. Fig. 11 shows a fourth type of front end movable endoscope having one elastic deformation portion, and the elongated connecting portion 124 is provided as an elastic deformation portion, which is freely detachably attached to the outside of the main tube 11.

Specifically, the first endoscope with a movable distal end having one elastically deformable portion according to the embodiment of the present invention is illustrated in fig. 1 and 2, and includes an insertion portion 1 and an operation portion 2. The insertion portion 1 includes a main tube 11 and an imaging portion 12. The main tube 11 includes a front tube portion 111, a bent portion 112, a rear tube portion 113, and a main tube channel 114. The bending part 112 may extend into a natural orifice of a human body, and particularly, the bending part 112 may be formed of a flexible tube or a snake bone, and the bending part 112 has a bending function in at least one direction. The bending portion 112 is connected to the control unit 21 by a pull wire (not shown), which may be a steel wire or other wire material with certain strength and toughness, similar to the bending portion of the existing endoscope. In particular, the control unit 21 may be directly connected to the traction wire, or may be connected to the traction wire through an anti-slip buffer (not shown), which may be a flexible member to prevent the traction wire from bending. The main lumen 114 is used for inserting the working implement 13, and specifically, the working implement 13 may be a steerable catheter, a biopsy forceps, an injection needle, a spray tube, an electric knife, a snare, a basket, a hemostatic clamp, or the like. The front tube end 1111 of the main tube 11 can be provided with a convex part, the convex part is connected with the head end of the camera part 12, and the head end of the camera part and the end surface of the convex part are rounded to prevent the tissues from being scratched when being touched by the human tissues.

Further, as shown in fig. 3, the imaging section 12 includes an imaging unit 121, an illumination unit 122, an elongated connecting portion 124, or further includes a flushing spout 123. The elongated connection portion front end portion 1241 is in contact with the image pickup portion rear end surface 126, and in this embodiment, the elongated connection portion 124 may be provided as an elastically deformable portion, provided inside the main tube 11 and independent from the main tube 11. When the imaging unit 12 is combined with the main pipe 11, it may be inserted from the front end opening of the main pipe 11, or may be inserted from the rear end opening of the main pipe 11 and pushed to the outlet of the front end main pipe channel 114. Specifically, the elastic deformation portion may be made of an elastic and biocompatible material such as silicone rubber, a thermoplastic elastomer material such as TPE material, or the like, and may be partially deformed or entirely deformed. As shown in fig. 3 a, the image pickup section front end surface 125 may be a plane; as shown in fig. 3 b, the imaging section distal end surface 125 may be a slope. Different observation angles can be realized to the different inclination of the preceding terminal surface 125 of portion of making a video recording, and suitable observation angle can provide better image effect for the doctor at the in-process of diagnosing. The illumination unit 122 may be a head LED illumination unit or an optical fiber light guide illumination unit. The lighting window of the lighting unit 122 may be a single light window or a double light window. The flushing nozzle 123 can be used for spraying water and air to the camera lens, and when the camera lens is polluted, water vapor sprayed out by the flushing nozzle 123 can be used for removing dirt attached to the camera lens, so that the picture is clearer. The irrigation nozzle 123 may also be used to spray water and air over the tissue in the body lumen to clean the small bleeding sites of the tissue during treatment.

Further, as shown in fig. 4, the image pickup unit 121 includes a single camera 1211 or a dual camera 1212 or a triple camera 1213. The single camera 1211 is a color camera, and the image pickup portion 12 in this embodiment can have a larger end surface, so that a larger color camera can be used. The dual cameras 1212 may be two color cameras; the system can also be a color camera and a black-and-white camera, wherein the color camera records color information of an image, the black-and-white camera captures details of an object, and the color information captured by the color camera and the details captured by the black-and-white camera are fused to obtain a higher-quality image; the dual cameras 1212 may also be one color camera and one infrared camera. The dual cameras 1212 can perform both 2D and 3D imaging. The three cameras 1213 include at least one black-and-white camera, infrared camera or fluorescent camera. Specifically, the three cameras can perform 2D imaging and also 3D imaging and also fluorescence imaging. The combination of the cameras can be combined according to specific functional requirements, and is not listed one by one; various combinations of the above-described imaging units may also be used in the imaging sections of other embodiments, and are not described in detail in other embodiments given below.

Further, as shown in fig. 5, the strip connecting portion 124 at least includes a conducting wire 1242, and the conducting wire 1242 is used for connecting the image capturing unit 121 and transmitting image signals and supplying power. If the head end LED lighting mode is used, the lighting unit 122 is an LED, and the wire 1242 is also used for connecting the LED of the lighting unit 122, supplying power to the LED and providing a control signal; in the case of the optical fiber light guide illumination method, the illumination unit 122 is an optical illumination window, the elongated connection portion 124 further includes an optical fiber 1244, and the illumination unit 122 is connected to the optical fiber 1244. The strip-shaped connecting part 124 can further comprise a water-gas pipe 1243, the water-gas pipe 1243 is connected with the flushing nozzle 123 and used for conveying water and gas, and the conveyed water and gas amount can be adjusted through the control unit 21 of the operating part according to actual operation conditions and used for spraying water and gas to the lens or spraying water and gas to the body cavity and the like. The front end 1241 of the strip-shaped connecting portion is used for connecting with the head end of the image pickup portion, the rear end of the strip-shaped connecting portion is connected with a connector (not shown in the figure) in the operation portion 2, the connector has an electrical signal interface and an optical signal interface, the electrical signal connector can be set as a contact type connector, and can also be split into a contact type power connector and a wireless type photoelectric connector, wherein the power interface is a contact type, and the signal interface is a wireless type. The connector may be a detachable device, and the image pickup section 12 may be detached from the operation section 2 after each use. The separated camera part 12 can be repeatedly installed and used after high-level disinfection, the cost of each use of a patient is reduced, the main pipe 11 can be made of disposable materials with lower cost and can be used for one time, and the problem that the endoscope pipeline is inconvenient to disinfect is solved. The various configurations of the elongated connecting portion can also be used in the elongated connecting portions of other embodiments, and are not described in detail in the other embodiments given below.

As shown in fig. 6 b, the working tool 13 is movable along the main tube axis toward the endoscope distal end within the main tube lumen 114, and the working tool 13 can serve as an auxiliary drive unit inserted into the main tube lumen 114. When the flexible deformation part is shielded at the outlet of the main tube cavity 114 in the closed state of the front end of the endoscope, and the working tool 13 moves to the front end of the endoscope from the main tube cavity 114 along the main tube axis to the outside of the main tube cavity 114, the strip-shaped connecting part 124 which is arranged as the flexible deformation part is pushed by the working tool 13 to generate flexible deformation and moves along the radial direction of the main tube axis. The image pickup part 12 is arranged on the elastic deformation part, is driven by the elastic deformation part and moves away from the outlet of the main tube cavity 114 together with the elastic deformation part, the front end of the endoscope becomes a separated state, and the front end of the working tool 13 extends out of the main tube cavity 114. In particular, the working implement 13 provided as an auxiliary drive unit may be a tube, such as a working channel tube, an adjustable bending catheter, etc., or may be various medical aids, such as a biopsy forceps, an injection needle, an electric knife, a snare, a basket, a hemostatic clamp, etc. As shown in fig. 1, the working tool 13 can be fed into the main tubular channel 114 through the working channel port 31, and at least one tool can be passed through the main tubular channel 114.

Further, as shown in a diagram of fig. 6, a driving force device 1112 may be provided on the boss side of the front tube portion 111 of the main tube. Specifically, the driving force device 1112 may be magnets that attract each other, or other devices with an adsorption function. When the working tool 13 is moved backward along the axial direction of the main tube into the main tube lumen 114, the tissue can be lightly touched by the imaging section 12, and the elongated connecting section 124 as the elastic deformation section is pushed radially inward along the axial direction of the main tube, and is moved radially inward along the axial direction of the main tube together with the imaging section 12. When the driving force device 1112 on the side surface of the imaging unit 12 approaches the driving force device 1112 on the side surface of the boss portion of the main tube front tube unit 111, the elastic deformation portion is blocked by the suction driving force generated by the driving force device 1112 to switch the endoscope front end from the opened state to the closed state. In the closed state of the distal end of the endoscope, as shown in fig. 2 b, the elastically deformable portion naturally blocks the outlet of the main tube lumen 114.

Further, when the driving force device 1112 is a device having an adsorption function, the working implement 13 may serve as an auxiliary driving unit inserted into the main pipe channel 114. When the working tool 13 moves in the main tube lumen 114 along the main tube axis to the outside of the main tube lumen 114 to the front end of the endoscope, the elongated connecting portion 124 provided as the elastic deformation portion is pushed and elastically deformed, so that the elastic deformation portion moves away from the outlet of the main tube lumen 114 along the main tube axis. As shown in fig. 6 c, a pull wire 25 may be provided as an active driving means on the main pipe 11, one end of the pull wire 25 being connected to the camera head end and the other end being connected to the control means 21. Specifically, the pulling wire 25 may be a steel wire, a nylon rope, or other wire material with certain strength and toughness. The pulling wire 25 may be a separate pulling wire 252, and one end of the separate pulling wire 252 is connected to the inside of the head end of the camera part 12. When the separation pull wire 252 pulls the head end of the image pickup section 12 to move radially outward along the main tube axis, the elastic deformation section is driven to move away from the outlet of the main tube lumen 114, and the front end of the endoscope becomes separated, and the working tool 13 can move forward along the main tube axis and extend out of the front end of the main tube lumen 114.

Further, the driving force device 1112 disposed on the side of the protruding portion of the front tube portion 111 of the main tube may be a repulsive magnet, a spring device, or other devices having a repulsive force function. The pulling wire 25 can be a closing pulling wire 251, and one end of the closing pulling wire 251 is connected with the outer side of the head end of the camera shooting part 12. When the working tool 13 moves backward along the main tube axis and retracts into the main tube lumen 114, the closing pull wire 251 can pull the head end of the image pickup part 12 to move radially inward along the main tube axis, the elastic deformation part is driven to shield the outlet of the main tube lumen 114, and the front end of the endoscope becomes a closed state. A small hole may be provided in the main pipe 11 to pass the closing-up wire 251 or the separating wire 252 and provide a supporting force, and the hole through which the closing-up wire 251 or the separating wire 252 passes from the main pipe 11 is made of a wear-resistant material, such as a ceramic material with a smooth surface, or stainless steel with a wear-resistant coating (chrome plating) on the surface, and has a characteristic of facilitating wire pulling and withstanding the friction of repeated wire pulling.

Further, in the driving unit of the endoscope, such as the auxiliary driving unit working tool 13 inserted into the main pipe lumen 114, or the active driving unit pulling wire 25 provided on the main pipe 11, the power source of the driving unit may be manual power, electric power, or the like, and the driving method for the driving unit may be electric driving, pneumatic driving, hydraulic driving, or the like, as long as the driving unit can output the driving force. In addition, the arrangement of the driving unit of the endoscope and the arrangement of the driving force device can be freely combined, for example, when the elastic deformation part is positioned at the outer side of the outlet of the main tube cavity 114 in a natural state, a closing pull wire 251 is arranged, when the endoscope is inserted, the closing pull wire 251 is tightened to shield the elastic deformation part at the outlet of the main tube cavity 114, when the endoscope needs to work, the closing pull wire 251 is loosened, the elastic deformation part is deformed back to the natural state, and the front end of the endoscope is changed into a separated state; in this case, a driving force device with a repulsive force function may be further selectively provided, that is, the repulsive force of the driving force device and the restoring force of the elastic deformation portion itself may cause the elastic deformation portion to move away from the outlet of the main pipe channel 114, and the pulling force of the closing pull wire 251 may cause the elastic deformation portion to deform to shield the outlet of the main pipe channel 114. For example, if the elastic deformation portion is naturally blocked at the outlet of the main pipe channel 114, the separation pulling wire 252 may be provided as an active driving unit, or the working implement 13 may be provided as an auxiliary driving unit, and a driving force device having an attraction function may be selectively provided, that is, the elastic deformation portion is deformed to be located outside the outlet of the main pipe channel 114 by the pulling force of the separation pulling wire 252 and the pushing force of the working implement 13, and the elastic deformation portion is blocked at the outlet of the main pipe channel 114 by the attraction force of the driving force device and the restoring force of the elastic deformation portion itself. By providing one or more of the driving unit and the driving force device, it is only necessary to deform and restore the elastic deformation portion and further to close or separate the front end of the endoscope, and no examples are given here.

As shown in fig. 7, the front end of the front end movable endoscope provided by the embodiment of the present invention includes two elastic deformation portions. As shown in a of fig. 7, the imaging section 12 is provided on one of the elastic deformation sections, and the elongated connection section 124 is provided as a first elastic deformation section. If the auxiliary imaging section 17 is provided on the other elastic deformation section, the elongated auxiliary connection section 174 may be provided as a second elastic deformation section. The auxiliary imaging unit 17 may include an auxiliary imaging unit 171, an auxiliary lighting unit 172, or further include an auxiliary flushing nozzle 173 for spraying water and air to the end face of the camera. Specifically, the auxiliary camera unit 171 includes a single camera, which is a color camera, a black-and-white camera, an infrared camera, or a fluorescent camera. Alternatively, the auxiliary imaging unit 17 includes only the auxiliary lighting unit 172, and the auxiliary lighting unit 172 is an LED or optical fiber light guide lighting unit. As shown in fig. 7 b, only one of the two elastically deformable portions at the distal end of the endoscope may be provided, and the imaging unit 12 may be provided on one of the elastically deformable portions and the other may be the second elastically deformable portion 19. When the front end of the endoscope is separated, the front end of the endoscope is provided with two elastic deformation parts, so that the deformation degree of each elastic deformation part is smaller than that of only one elastic deformation part, the driving unit can drive the elastic deformation parts to move away from or shield the outlet of the main pipe cavity 114, and the working tool 13 can extend out and retract conveniently. The two elastic deformation parts can be arranged in various combination methods, as long as the functions of the complete camera shooting part and the convenience for opening and closing the front end of the endoscope can be realized, and the examples are not repeated one by one.

Further, as shown in fig. 7, a driving force device may be provided on a side surface of the head end of the image pickup unit 12 and a side surface of the head end of the auxiliary image pickup unit 17, or a side surface of the head end of the image pickup unit 12 and a side surface of the head end of the second elastic deformation unit 19, or a pull wire may be provided as an active driving unit, specifically, one of the pull wires connects the head end of the image pickup unit and a control unit of the operation unit, and the other one connects the head end of the second elastic deformation unit and a control unit of the operation unit. Furthermore, a work implement 13 can also be provided as an auxiliary drive unit. When the working implement 13 axially moves along the main tubular channel 114 to extend and retract the main tubular channel 114, the driving unit can more conveniently drive the two elastic deformation portions to move away from or block the outlet of the main tubular channel 114.

As shown in fig. 8, the second front-end movable endoscope of the embodiment of the present invention has two elastically deformable portions, and the connecting portion of the elastically deformable portion is provided inside the main tube 11 and connected to the main tube 11. Specifically, the elastic deformation portion may use an elastic material such as silicone rubber, a thermoplastic elastomer material such as TPE material, or the like having elasticity and biocompatibility. As shown in fig. 8 a, only one of the two elastically deformable portions at the distal end of the endoscope may be provided, and the imaging unit 12 may be provided on the first elastically deformable portion 18 and the other may be the second elastically deformable portion 19. When the front end of the endoscope is separated, the front end of the endoscope is provided with two elastic deformation parts, so that the deformation degree of each elastic deformation part is smaller than that of only one elastic deformation part, the driving unit can drive the elastic deformation parts to move away from or shield the outlet of the main pipe cavity 114, and the working tool 13 can extend out and retract conveniently. The two elastic deformation parts can be completely or partially connected in a natural state, and a gap is formed at the connection part, so that the two elastic deformation parts can be elastically deformed conveniently. As shown in a of fig. 8, the front end surface of the image pickup section may be a flat surface; as shown in fig. 8 b, the imaging section distal end surface may be a slope. Different observation angles can be realized to the different inclination of the preceding terminal surface of portion of making a video recording, and suitable observation angle can provide better picture effect for the doctor at the in-process of diagnosing.

Further, as shown in fig. 8 b and 8 d, an auxiliary imaging unit 17 may be provided on the other elastic deformation unit. The auxiliary imaging part 17 includes an auxiliary imaging unit 171, an auxiliary lighting unit 172 or further includes an auxiliary flushing nozzle 173; or the auxiliary imaging section 17 includes only the auxiliary lighting unit 172. The front end face of the auxiliary camera part 17 can be a plane or an inclined plane, and different angles of inclination of the front end face of the auxiliary camera part can provide different observation and illumination angles. The arrangement of the first elastic deformation portion 18 and the arrangement of the second elastic deformation portion 19 can be combined in various ways, as long as the function of a complete image pickup portion and the convenience of opening and closing the front end of the endoscope can be realized, and no examples are given here.

Further, as shown in fig. 8, the working implement 13 may serve as an auxiliary drive unit inserted into the main tubular channel 114. Specifically, as shown in fig. 8 a and 8 b, the two elastically deformable portions shield the exit of the main tube channel 114 in the closed state of the endoscope distal end. When the working tool 13 moves to the front end of the endoscope outside the main tubular cavity 114 along the main tubular axis in the main tubular cavity 114, the two elastic deformation parts are pushed by the working tool 13 to generate elastic deformation, and move along the radial direction of the main tubular axis, and further move away from the outlet of the main tubular cavity 114. The imaging unit 12 provided on the first elastic deformation portion 18 moves away from the outlet of the main tubular passage 114 in the radial direction of the main tubular shaft, and if the auxiliary imaging unit 17 is provided, the auxiliary imaging unit 17 also moves away from the outlet of the main tubular passage 114 in the radial direction of the main tubular shaft. When the image pickup section 12 is moved away from the exit of the main tubular passage 114, the space in which the working implement 13 protrudes is enlarged, and at least one working implement 13 can pass through the main tubular passage 114. As shown in fig. 8 c and 8 d, the endoscope distal end is in a separated state, and the working tool 13 is extended out of the main tube channel 114 to perform a medical treatment.

As shown in fig. 9, the second front-end movable endoscope of the embodiment of the present invention has one elastic deformation portion, and the connection portion of the elastic deformation portion is provided inside the main tube 11 and connected to the main tube 11. Specifically, the elastic deformation portion may use an elastic material such as silicone rubber, a thermoplastic elastomer material such as TPE material, or the like having elasticity and biocompatibility. As shown in a of fig. 9, the end face of the image pickup section 12 may be a flat surface; as shown in fig. 9 b, the end face of the imaging unit 12 may be a slope. Different observation angles can be realized to the different inclination of the preceding terminal surface of portion of making a video recording, and suitable observation angle can provide better picture effect for the doctor at the in-process of diagnosing. As shown in fig. 9 c, the imaging section 12 may be provided on the first elastically deforming section 18, with the working implement 13 as an accessory drive unit inserted into the main tubular channel 114. Specifically, when the working tool 13 moves along the main tube axis toward the endoscope distal end within the main tube lumen 114, the elastically deformable portion is pushed by the working tool 13 to be elastically deformed, and moves in the radial direction of the main tube axis, thereby moving away from the outlet of the main tube lumen 114. The imaging section 12 moves outward in the radial direction of the main tubular shaft with the elastic deformation section, thereby enlarging the outlet space of the main tubular channel 114. As shown in fig. 9 d, the imaging unit 12 may be independent of the first elastic deformation portion 18, specifically, the imaging unit 12 may be rigidly connected to the main pipe. The working implement 13 serves as an auxiliary drive unit inserted into the main tubular channel 114, and specifically, the working implement 13 has a bending function in at least one direction. When the working tool 13 moves along the main tube axis toward the endoscope distal end within the main tube lumen 114, the first elastically deforming part 18 is pushed by the working tool 13 to be elastically deformed, and moves in the radial direction of the main tube axis, thereby moving away from the exit of the main tube lumen 114.

As shown in fig. 10, the third embodiment of the present invention is a front end movable endoscope having one elastic deformation portion, and a connection portion of the elastic deformation portion is provided inside the main tube 11 and connected to the main tube 11. Specifically, the elastic deformation portion may use an elastic material such as silicone rubber, a thermoplastic elastomer material such as TPE material, or the like having elasticity and biocompatibility. The imaging unit 12 is provided on the first elastic deformation portion 18, and the front end opening of the main tubular channel 114 is offset from the front end surface of the imaging unit 12 toward the rear end. As shown in a of FIG. 10, when the main tube 11 is inserted into the body lumen, the supporting tool 131 is inserted into the main tube lumen 114 first, so as to prevent the injury of the body tissue by the opening portion at the distal end of the endoscope. The distal end of the supporting tool 131 is in contact with the imaging unit 12, and the distal end surface of the supporting tool 131 and the distal end surface of the imaging unit 12 are flush with each other. When the main tube 11 is close to the target region within the body lumen, the supporting tool 131 is withdrawn from the main tube. As shown in fig. 10 b, after the support tool 131 is removed from the main pipe, the working tool 13 is inserted into the main pipe. The working implement 13 serves as an auxiliary drive unit inserted into the main tubular channel 114, and specifically, the working implement 13 has a bending function in at least one direction. When the working tool 13 moves along the main tube axis toward the front end of the endoscope in the main tube lumen 114, the elastic deformation portion is pushed by the working tool 13 to generate elastic deformation, and moves along the main tube axis in the radial direction and moves away from the outlet of the main tube lumen 114, thereby driving the image pickup portion 12 to move radially outward along the main tube axis.

Further, as shown in a diagram c in fig. 10, the end face of the imaging section 12 may be a plane; as shown in fig. 10 d, the end surface of the imaging unit 12 may be a slope. Different observation angles can be realized to the different inclination of the preceding terminal surface of portion of making a video recording, and suitable observation angle can provide better picture effect for the doctor at the in-process of diagnosing. The front end opening end surface of the main tube cavity 114 may be a plane, and the front end opening end surface of the main tube cavity 114 may also be an inclined surface. Specifically, the peripheries of the openings of the camera part 12 and the main tube lumen 114 are both rounded to make the contact surface with the human tissue smooth, so as to avoid the gap from damaging the human tissue, and the main tube 11 can be directly inserted into the human lumen.

As shown in fig. 11, the fourth endoscope of the present embodiment has a movable distal end endoscope having one elastic deformation portion on which the image pickup portion 12 is provided, and the elastic deformation portion and its connecting portion are mounted outside the main tube 11. Specifically, the strip-shaped connecting portion 124 may be an elastic deformation portion, one side of the elastic deformation portion may use an elastic and biocompatible material such as an elastomer material, e.g., silicone rubber, a thermoplastic elastomer material, e.g., TPE material, etc., the elastic material has elasticity, and the other side may use a rigid material without elasticity. As shown in fig. 11 a, the elongated connecting portion 124 is detachably attached to the outside of the main tube 11. The elongated connecting portion 124 and the main tube 11 may be fixed by a connecting portion fixing means 33, and specifically, the connecting portion fixing means 33 may be a band, an elastic rubber ring, or the like. As shown in fig. 11 b, the elongated connecting portion 124 may be a flat strip-shaped connecting portion having a concave curved surface, and the concave curved surface of the elongated connecting portion 124 may be attached to the outside of the main tube 11. As shown in fig. 11 e, the longitudinal section of the elongated connecting portion 124 is crescent-shaped, which facilitates the attachment to the outside of the main tube 11. Specifically, the outer shell of the middle rear end connecting portion of the elongated connecting portion 124 may be made of a bendable sheet material made of a multi-layer composite material such as a metal mesh layer, leather, rubber, or fabric, and the bent portion has a snap function and may be fastened to the main pipe 11 when being attached to the outside of the main pipe 11, so as to be fixed to the main pipe 11. The fixing mode can also be a combination of two or more of the above modes so as to enhance the installation stability of the connecting part and the main pipe. Although not shown in the drawings, in other embodiments, the elongated connecting portion 124 may also be an oval flat bar shape, and is fixed to the main pipe 11 by the connecting portion fixing device 33. The elastic deformation part and the connecting part thereof are arranged outside the main pipe 11, so that the installation and the disassembly are convenient, the main pipe 11 can be made of disposable materials, and the problem of inconvenience in endoscope pipeline disinfection is solved. The imaging unit 12 with high added value can be used repeatedly, and the cost of each use of the patient is reduced.

Further, the elastically deformable portion driving unit may use the tool 13 as an auxiliary driving unit inserted in the main pipe channel 114. Specifically, when the working tool 13 moves along the main tube axis toward the endoscope distal end within the main tube lumen 114, the elastically deformable portion is pushed by the working tool 13 to be elastically deformed, and moves in the radial direction of the main tube axis, thereby moving away from the outlet of the main tube lumen 114. The imaging section 12 moves outward in the radial direction of the main tubular shaft with the elastic deformation section, thereby enlarging the outlet space of the main tubular channel 114.

Further, as shown in a diagram c in fig. 11, a wire 25 may be provided on the main pipe 11 as an active driving unit. The pulling wire 25 has one end connected to the outside of the elastic material in the elongated connecting portion 124, then passes through the elongated connecting portion 124, is routed inside the elongated connecting portion 124, and has the other end connected to the control unit 21 of the proximal operating portion 2. Specifically, the hole in the elongated connecting portion 124 through which the wire 25 passes is made of a wear-resistant material, such as a ceramic material with a smooth surface, or stainless steel with a wear-resistant coating (chrome plating) on the surface, and has a characteristic of facilitating the pulling of the wire 25 and withstanding the friction caused by the repeated pulling of the wire. Specifically, the pulling wire 25 may be a steel wire, a nylon rope, or other wire material with certain strength and toughness. The pulling wire 25 can pull one side of the elastic material of the elastic deformation portion to stretch, and because the other side of the elastic deformation portion is made of rigid material, the elastic deformation portion will bend and deform towards one side of the elastic material and will not deform along the pulling wire direction, so as to drive the elastic deformation portion to move away from the outlet of the main lumen 114. When the elastic deformation part is driven to move away from the outlet of the main tube cavity 114, the image pick-up part 12 moves outwards along the radial direction of the main tube shaft along with the elastic deformation part, the front end of the endoscope becomes a separated state, and the working tool 13 can move forwards along the main tube shaft and extend out of the front end of the main tube cavity 114. The active driving unit and the auxiliary driving unit are provided with various combinations, so long as the deformation and restoration of the elastic deformation part can be realized, and the front end of the endoscope can be closed or separated, which is not illustrated one by one. As shown in fig. 11 d, the end surface of the imaging unit 12 may be a slope. Different observation angles can be realized to the different inclination of the preceding terminal surface of portion of making a video recording, and suitable observation angle can provide better picture effect for the doctor at the in-process of diagnosing.

In the endoscope with the movable front end provided by the embodiment of the invention, the insertion part 1 and the operation part 2 of the endoscope can also adopt a split endoscope structure. The split endoscope structure can adopt one structure of a split endoscope device disclosed in Chinese patent publication CN 111493795A. As shown in fig. 12, the split endoscope includes a lock mechanism including a first lock member 14 provided to the insertion portion 1 and a second lock member 22 provided to the operation portion 2, the first lock member 14 being detachably linked with the second lock member 22. Specifically, the first locking member 14 and the second locking member 22 may be a male and female connection or may be a threaded connection. The insertion part 1 is also provided with a working channel port 31 and a water vapor port 32. In which the number of the water and air ports 32 is two, for supplying water and air required for flushing the camera unit 121, respectively. The end of the strip-shaped connecting part 124 is divided into two branches, the water-gas pipe 1243 is connected with the water-gas port 32, and the conducting wire 1242 and the optical fiber 1244 are connected with the first electrical connection unit 15. The power supply and the electrical signal between the first electrical connection unit 15 and the second electrical connection unit 23 are interconnected using an electrical signal connector. The optical signals are wirelessly connected by a photoelectric module. Specifically, the electrical signal connector can adopt a Type-C or the like Type electrical connector, or can be butted in an electromagnetic coupling or contact connection mode. The first power coupling unit 16 in this embodiment may be directly connected to a pull wire connected to the bending part 112. Specifically, the number of the first power connection units 16 is at least two, so that bending in at least one direction of the bending portion 112 and movement of the work implement 13 can be achieved. The second power coupling unit 24 is connected to the control unit 21 of the operating part, and power transmission between the second power coupling unit 24 and the first power coupling unit 16 is achieved when the first locking member 14 and the second locking member 22 are engaged.

Further, a first electrical connection unit 15 is mounted on an end surface of the insertion portion 1. Specifically, the first electrical connection unit 15 may be divided into a first electrical signal connector and a first optical signal connector. The first electric signal connector can be set as a contact type connector and can also be split into a contact type power connector and a wireless type photoelectric connector, wherein a power interface is in a contact type, and a signal interface is in a wireless type; the first optical signal connector is provided with a lens or an optical cone and protective glass at the head end of the internal optical fiber. A second electrical connection unit 23 is mounted on an end surface of the operation portion 2. Specifically, the second electrical connection unit 23 may be divided into a second electrical signal connector and a second optical signal connector. The second electric signal connector can be set as a contact type connector and can also be split into a contact type power connector and a wireless type photoelectric connector, wherein the power interface is in a contact type, and the signal interface is in a wireless type; the second optical signal connector is additionally provided with a lens or an optical cone and protective glass at the head end of the internal optical fiber.

In the endoscope with the movable front end provided by the embodiment of the invention, the insertion part 1 and the operation part 2 of the endoscope can also adopt a novel electric endoscope structure, and the novel electric endoscope structure can adopt a structure in an endoscope clamping control device disclosed in Chinese patent publication CN 110974125A.

The part needing to be reused can be disinfected at a high level, and the disinfection contents are as follows: a disinfecting method for killing all bacteria propagules including mycobacteria, virus, fungus and their spores. Concretely, the chemical method includes chlorine-containing preparation, chlorine dioxide, o-phthalaldehyde, peracetic acid, hydrogen peroxide, ethylene oxide and the like.

The main tube, the image pick-up part and the elastic deformation part (including the connection part) of the endoscope can be made of disposable materials, and can also be made of reusable materials which can be sterilized at a high level. The endoscope of the present invention may be a disposable endoscope or a reusable endoscope.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (9)

1. An endoscope, characterized in that,

the endoscope comprises a main tube, at least one elastic deformation part, a driving unit and an image pickup part;

the main pipe comprises a bending part and a main pipe cavity channel, wherein the bending part is used for bending the front end of the main pipe, and the main pipe cavity channel is used for inserting a working tool therein;

the elastic deformation part can shield an outlet of the main pipe cavity;

the driving unit is used for applying acting force to the elastic deformation part to cause the elastic deformation part to generate elastic deformation to generate radial movement along the main pipe shaft so as to enable the elastic deformation part to move away from or move back to the outlet of the main pipe cavity;

the imaging unit is used for observing a subject; the camera shooting part is arranged on the elastic deformation part or is independent of the elastic deformation part and is rigidly connected with the main pipe;

the imaging unit includes an illumination unit for illuminating a subject.

2. The endoscope of claim 1,

the elastic deformation part further comprises a connecting part;

the connecting part is arranged in the main pipe, or the connecting part is in a flat strip shape and can be freely detachably arranged outside the main pipe.

3. The endoscope of claims 1-2,

one side of the elastic deformation part is made of rigid materials, and the other side of the elastic deformation part is made of elastic materials with scalability;

the driving unit is a pull wire and is connected with the elastic material, and the pull wire can pull the elastic material to contract, so that the elastic deformation part is bent and deformed towards one side of the elastic material.

4. The endoscope of claims 1-2,

the driving unit is a working device inserted into the main pipe cavity, and when the working device extends out of the main pipe cavity, the elastic deformation part is pushed to be elastically deformed to generate radial movement along the main pipe shaft, so that the elastic deformation part moves away from the outlet of the main pipe cavity.

5. The endoscope of claim 1,

the front end surface of the camera shooting part is vertical to the main pipe shaft or is an inclined surface;

the front end opening end surface of the main pipe cavity channel is vertical to the main pipe shaft or is an inclined surface.

6. The endoscope of claim 1,

the camera shooting part also comprises a strip-shaped connecting part and a camera shooting unit, or also comprises a washing nozzle which can be used for spraying water and air on the end surface of the camera;

the camera shooting unit comprises a single camera, two cameras or three cameras;

the lighting unit is an LED or optical fiber light guide lighting part;

the strip-shaped connecting part comprises a conducting wire, or also comprises a water pipe, or also comprises an optical fiber, and the conducting wire is used for connecting the camera and the LED; the water-air pipe is connected with the flushing nozzle, and the optical fiber is used for guiding light.

7. The endoscope of claim 6,

the double cameras are two color cameras, or a color camera and a black-and-white camera, or a color camera and an infrared camera; the three cameras at least comprise a black-and-white camera or an infrared camera or a fluorescent camera.

8. The endoscope of claim 1,

the elastic deformation part is shielded at the outlet of the main pipe cavity in a natural state;

when the driving unit applies acting force to the elastic deformation part, the elastic deformation part moves away from the outlet of the main pipe cavity along the radial direction of the main pipe shaft.

9. The endoscope of claim 1,

the elastic deformation part is positioned outside the main pipe cavity outlet in a natural state;

when the driving unit applies acting force to the elastic deformation part, the elastic deformation part moves towards the outlet of the main pipe cavity channel along the radial direction of the main pipe shaft and shields the outlet of the main pipe cavity channel.

Images