WO2016173381A1

WO2016173381A1 - Controllable bending endoscope

Info

Publication number: WO2016173381A1
Application number: PCT/CN2016/078128
Authority: WO
Inventors: 申亚琪
Original assignee: 申亚琪
Priority date: 2015-04-29
Filing date: 2016-03-31
Publication date: 2016-11-03
Also published as: CN106175651A

Abstract

A controllable bending endoscope comprises an inner pipe (1) and an outer pipe (2). The inner pipe (1) is sleeved in the outer pipe (2). The inner pipe (1) can extend for any length from an insertion end of the outer pipe (2). An insertion end of the inner pipe (1) is provided with a camera (11) and a light source (12). The inner pipe (1) is an elastic member having a certain bending shape, and the outer pipe (2) has a bending shape different from the inner pipe (1). When the inner pipe (1) is sleeved in the outer pipe (2), the inner pipe (1) deforms, and the inner pipe (1) is sleeved inside the outer pipe (2) so as to have the same shape as the outer pipe (2). When the inner pipe (1) extends from the internal portion of the outer pipe (2), an extension portion of the inner pipe (1) deforms to recover the initial bending shape of the inner pipe (1). The controllable bending endoscope has a simple structure and a small volume, and can perform multi-angle wide-range viewing of small regions according to a requirement.

Description

Controllable curved endoscope

Technical field

The present invention relates to an endoscope that is controllably bendable.

Background technique

Endoscopes are widely used in medical or industrial fields to inspect patients or industrial products in a minimally invasive state. Since the camera of the endoscope to be inspected is often disposed at the front end of the insertion tube, if the camera is rotated or the field of view is changed, a controllable bending device must be provided at the insertion end of the insertion tube to insert the imaging field of view of the camera with the insertion tube. The bending of the end changes.

In the prior art, the insertion tube structure of the conventional controllable curved endoscope is complicated and the production cost is high. The conventional controllable curved endoscope is mainly composed of a soft insertion tube, and generally can be provided with a spring tube, a snake bone, a woven mesh, a wire for controlling the bending of the insertion tube, and the like in the soft insertion tube. The processing precision of the components is high, and the structure is complicated, and it is prone to occurrence of bending jam or damage. Once the fault occurs, the endoscope will be scrapped.

For example, Chinese Patent Application No. CN101732027 discloses a flexible steering endoscope comprising a handle and a duct with a central through hole, a steering passage and a working passage in the duct, a steering wire in the steering passage, and a slip on the handle. The inner end of the conduit is fixedly connected to one end of the central through hole of the handle, and the working passage at the inner end of the conduit is connected to a pipe passing through the through hole in the center of the handle. The outer end of the conduit is provided with a metal sheath, and is disposed in the steering passage in the conduit. There is a positioning sleeve, and an elastic tube is arranged in the conduit between the positioning sleeve and the metal sheath, the steering wire passes through the positioning sleeve and the elastic tube, one end is fixedly connected with the metal sheath, and the other end is fixedly connected with the slider. The structure inside the bendable steering endoscope is complicated and is prone to wear and tear.

Further, for example, Chinese Patent Application No. CN103431829 discloses a medical endoscope bending control mechanism including a bending portion, a bending driving unit and a hand wheel adjusting device, the bending portion being provided with a jacket, a bending assembly and a fixing cylinder, the jacket being sleeved on a bending assembly, the fixing cylinder is fixed to the front end of the bending assembly, and is provided with a bending driving unit. The bending driving unit comprises at least four control cables and a control ball, and the circumferential direction of the fixing cylinder is corresponding to the control cable. a control slot is disposed in the connecting slot, the hand wheel adjusting device is drivingly connected to the control cable, and the hand wheel adjusting device is further provided with two sets of limiting and self-locking mechanisms. . Similarly, the structure of the medical endoscope bending control mechanism is also complicated, and the degree of bending is limited, and it is impossible to perform a more comprehensive examination of the patient.

The flexible endoscopes involved in the above application all adopt a relatively complicated structure to modify the insertion tube of the endoscope, which greatly increases the production cost and the maintenance cost, and the bending angle also has certain limitations.

Summary of the invention

It is an object of the present invention to provide a controllable curved endoscope comprising an inner tube and an outer tube, the inner tube being sleeved in the outer tube, and the inner tube being extendable from the insertion end of the outer tube by any length; the insertion end of the inner tube The camera has a camera and a light source; the inner tube is an elastic member having a certain curved shape, and the outer tube has a different curved shape from the inner tube. When the inner tube is sleeved in the outer tube, the inner tube is deformed, and the inner tube is the same as the outer tube. The shape is sleeved in the outer tube; when the inner tube protrudes from the outer tube, the protruding portion of the inner tube is deformed to restore the original curved shape of the inner tube.

Further, the inner tube is an elastic hose and the outer tube is a rigid tube.

Preferably, the inner tube and the outer tube are both hard tubes or hoses, and the hardness of the outer tube is greater than the hardness of the inner tube.

Further, the non-inserted end of the outer tube is provided with a handle.

Preferably, the inner tube is provided with an instrument channel, the inlet of the instrument channel is disposed on the outer peripheral wall of the handle or the outer tube outside the human body, and the outlet of the instrument channel is disposed on the insertion end surface of the inner tube.

Further, a water pipe for passing water is disposed in the inner pipe, and one end of the water pipe is disposed on the outer peripheral wall of the handle or the outer pipe outside the human body, and the other end of the water pipe is disposed on the insertion end surface of the inner pipe.

The invention also provides a controllable curved endoscope comprising an inner tube and an outer tube, the outer tube is sleeved outside the inner tube, and the inner tube can be retracted from the insertion end of the outer tube by any length; the insertion end of the outer tube The camera has a camera and at least one light source; the outer tube is an elastic member having a certain curved shape, and the inner tube has a different curved shape from the outer tube. When the outer tube is sleeved outside the inner tube, the outer tube is deformed, and the outer tube is The same shape of the inner tube is sleeved outside the inner tube; when the inner tube is retracted from the outer tube, the portion of the outer tube that protrudes from the inner tube is deformed to restore the original curved shape of the outer tube.

Further, the outer tube is an elastic hose, and the inner tube is a rigid tube.

Preferably, the inner tube and the outer tube are both hard tubes or hoses, and the hardness of the inner tube is greater than the hardness of the outer tube.

Further, the non-inserted end of the outer tube is provided with a handle.

Preferably, the outer tube is provided with an instrument channel, the inlet of the instrument channel is disposed on the outer peripheral wall of the handle or the outer tube outside the human body, and the outlet of the instrument channel is disposed on the insertion end surface of the outer tube.

Further, a water pipe is provided in the outer pipe for passing water. One end of the water pipe is disposed on the outer peripheral wall of the handle or the outer pipe outside the human body, and the other end of the water pipe is disposed on the insertion end surface of the outer pipe.

As described above, the controllable curved endoscope according to the present invention has a simple structure and a small size, and can observe a plurality of angles and a wide range of fine parts as needed.

In order to make the above description of the present invention more comprehensible, the preferred embodiments will be described below in detail with reference to the accompanying drawings.

DRAWINGS

The invention will now be described with reference to the accompanying drawings.

1 is a schematic view showing the overall structure of a controllable curved endoscope according to the present invention;

2 is a partial cross-sectional view showing the inner tube 1 completely retracted into the outer tube 2;

Figure 3 is a schematic view showing the structure of the inner tube 1 of Figure 1 extending from the outer tube 2;

Figure 4 is a schematic view showing the structure of the inner tube 1 of Figure 3 completely extending from the outer tube 2;

Figure 5 is a schematic end view of the insertion end of the inner tube 1;

Figure 6 is a schematic structural view of an embodiment of Figure 1;

7 is a schematic view showing the overall structure of another controllable curved endoscope according to the present invention;

Figure 8 is a schematic cross-sectional view showing the inner tube 1 of Figure 7 retracted into a portion of the outer tube 2;

Figure 9 is a cross-sectional view of the inner tube 1 of Figure 7 after being completely retracted into the outer tube 2;

Component label description

1 inner tube

11 camera

12 light source

13 water pipes

14 trachea

15 instrument tube

2 outer tube

3 handles

4 display

detailed description

The embodiments of the present invention are described below by way of specific embodiments, and those skilled in the art can readily understand other advantages and functions of the present invention from the disclosure of the present disclosure.

As shown in FIG. 1, the present invention provides a controllable curved endoscope suitable for various endoscopes, including industrial endoscopes. Mirrors, medical endoscopes, etc., can comprehensively observe and detect small objects in objects or human bodies. In the present invention, a medical endoscope is described as an example, but the present invention is not limited thereto, and can be applied to various other fields such as industry.

The invention provides a controllable curved endoscope for inspecting various small parts. The controllable bending device comprises an inner tube 1 and an outer tube 2, the inner tube 1 is sleeved in the outer tube 2, and the inner tube 1 can be extended from the insertion end of the outer tube 2 by any length according to the needs of use.

Further, in the present invention, as shown in FIGS. 2 to 4, the inner tube 1 is preferably an elastic member having a certain curved shape, and when the inner tube 1 is alone, it can maintain a certain shape when the inner tube 1 is in an external force. A certain deformation can occur under the action of the inner tube 1, and the inner tube 1 can be restored to its original curved shape after being removed as an external force applied to the inner tube 1. In the present invention, the curved shape of the inner tube 1 may be a hook shape in one direction, or may be a spiral shape, and the inner tube 1 may be shaped into various curved shapes depending on the use.

Further, the outer tube 2 has a different curved shape from the inner tube 1, and in the present invention, the outer tube 2 is preferably a straight tube for easy access to the patient.

In the present invention, when the inner tube 1 is sleeved in the outer tube 2, since the outer tube 2 is less likely to be deformed or the deformation of the outer tube 2 is smaller than that of the inner tube 1, the inner tube 1 is deformed, and when the inner tube 1 is deformed, After bending into the outer tube 2, the inner tube 1 is sleeved in the outer tube 2 in the same manner as the outer tube 2. At this time, the outer tube 2 can maintain its original shape and can be slightly deformed.

Further, when the user controls the inner tube 1 to protrude from the insertion end of the outer tube 2, as the insertion end of the inner tube 1 is separated from the outer tube 2, the protruding portion of the inner tube 1 is deformed, and the inner tube 1 is restored. Some have a curved shape; and when the user again controls the inner tube 1 to retract into the outer tube 2, the inner tube 1 is again deformed into the same shape as the outer tube 2.

In the present invention, since the controllable curved endoscope is mostly used in the field of medical detection, the controllable curved endoscope can be combined with the endoscope, that is, the camera 11 and the at least one light source are disposed at the insertion end of the inner tube 1. 12, and the camera 11 is connected to the display portion 4 provided outside the controllable curved endoscope. When the camera 11 performs imaging, the light source 12 provides a bright shooting environment for the camera 11, and the display unit 4 displays the image captured by the camera 11 and output. When the inner tube 1 and the outer tube 2 enter the human body together, the camera 11 can take a picture of the process of entering the human body, and transmit the captured picture to the display unit 4, and display it through the display unit 4; when the inner tube 1 and the outer tube 2 After entering the predetermined position in the human body, the camera 11 can photograph the human body environment and display the captured real-time screen on the display unit 4 for the user to observe.

Further, the camera 11 and the display unit 4 can be connected by wire or wirelessly. When the camera 11 and the display unit 4 are connected in a wired manner, they may be connected through a point connection line disposed inside the inner tube 1 or between the inner tube 1 and the outer tube 2 or in the wall of the inner tube 1; 11 when the display unit 4 is connected wirelessly, A wireless generating device is provided in the inner tube 1 or the outer tube 2, and the camera 11 is connected to the display unit 4 by a wireless generating device.

Further, in the present invention, the light source 12 may be one or plural to achieve a shadowless effect. And the light source 12 can take any form of illuminating element, such as LED light source 12, light emitting diode and the like. Further, the display unit 4 may be a display of various models, various sizes, or other display members. For example, when used indoors, it can be connected to a larger display to obtain a larger magnification image, and when the endoscope is carried out, a portable display can be used, or a pluggable can be provided on the outer tube 2. Small display.

In the present invention, the inner tube 1 and the outer tube 2 may be made of various materials as needed, and may have a plurality of different hardness combinations.

In one embodiment, the inner tube 1 is preferably an elastic hose, and the outer tube 2 is preferably a rigid tube, the hardness of the inner tube 1 being significantly less than the hardness of the outer tube 2, under which conditions the inner tube 1 is inserted After the inside of the outer tube 2, deformation occurs according to the shape of the outer tube 2, and the portion of the inner tube 1 that enters the outer tube 2 becomes the same shape as the outer tube 2.

In another embodiment, the inner tube 1 and the outer tube 2 are both rigid tubes or the inner tube 1 and the outer tube 2 are both hoses, as long as the hardness of the outer tube 2 is greater than the hardness of the inner tube 1. In this way, when the inner tube 1 enters the outer tube 2, the inner tube 1 can be deformed to have the same shape as the outer tube 2; or the inner tube 1 and the outer tube 2 are deformed together, but at this time, the outer tube 2 The shape variable is small, and the shape of the inner tube 1 is large, so that the inner tube 1 becomes the same or similar shape as the outer tube 2.

In the present invention, in order to give the operator a more comfortable hand feeling, the handle 3 can also be provided at the non-insertion end of the outer tube 2, which is convenient for the user to operate. Further, some functional modules may also be disposed in the handle 3 or on the handle 3 to reduce the diameter of the outer tube 2 and the inner tube 1. For example, the wireless transmitting device can be disposed in the handle 3 to realize wireless connection between the display portion 4 and the camera 11; further, as shown in FIG. 6, the display portion 4 can also be connected in a plug connection or a rotary connection. It is set on the handle 3 for easy carrying.

Further, in the present invention, in order to make the connection between the handle 3 and the outer tube 2 more reliable, a connection member between the handle 3 and the outer tube 2 may be provided to reinforce the connection between the handle 3 and the outer tube 2.

Further, the handle 3 may be provided with a telescopic control portion for controlling the inner tube 1 to protrude or retract from the outer tube 2. The telescopic control portion is preferably a slider connected to the inner tube 1, and the slider can slide in a predetermined track to control the length of the inner tube 1 protruding from the outer tube 2, and the rail can also be provided with a limit. The device can position the slider by using the limiting device when the length of the inner tube 1 reaches the user's observation requirement, thereby fixing the length of the extended inner tube 1 for the user to observe. After the observation at this position, the positioning device is released, and the extension length of the inner tube 1 can be continuously adjusted to inspect other parts of the patient's body. However, the present invention is not limited thereto, and the limiting device may be disposed on the outer peripheral wall of the outer tube 2 located outside the human body.

Further, in the present invention, in order to prevent the outer diameter of the outer tube 2 from being excessively large, the wireless transmitting device can be disposed in the handle 3 to further reduce the outer diameter of the outer tube 2, thereby avoiding discomfort to the patient during use.

As shown in FIG. 5, in the present invention, in order to better treat the patient, the controllable curved endoscope can also provide functional modules for different purposes in the inner tube 1 to achieve more functions.

Further, an instrument tube 15 for extending into the treatment instrument may be disposed in the inner tube 1, and one end of the instrument tube 15 is disposed on the outer peripheral wall of the handle 3 or the outer tube 2 outside the human body, and the tube 15 of the instrument The other end is disposed on the insertion end surface of the inner tube 1. When any lesion is found during the examination, the auxiliary treatment device can be inserted into the patient from the instrument tube 15 in time to treat the patient, and the suspected lesion can also be sampled.

Further, a water pipe 13 for passing water may be disposed in the inner tube 1. One end of the water pipe 13 is disposed on the outer peripheral wall of the handle 3 or the outer tube 2 outside the human body, and the other end of the water pipe 13 is disposed in the inner tube 1. Insert on the end face. When the controllable curved endoscope enters the patient's body, if an obstruction blocks the camera 11, the physiological saline can be injected into the patient through the water tube 13, and the physiological saline flowing out from one end of the insertion end surface of the inner tube 1 can be The blood is dilute, or the obstruction is opened, so that the shooting environment of the camera 11 becomes clear. At the same time, the water pipe 13 can also be used as the water suction pipe 13. By providing a liquid suction device outside the water pipe 13 provided on the wall of the handle 3 or the outer pipe 2, the diluted water or the obstruction can be sucked out by the water pipe 13 from the patient. Excreted in the body.

Further, the inner tube 1 may further be provided with a gas tube 14 for ventilation. One end of the air tube 14 is disposed on the outer peripheral wall of the handle 3 or the outer tube 2 outside the human body, and the other end of the air tube 14 is disposed at the inner tube 1. On the end face. Further, the air tube 14 communicates with the air intake device or the exhaust device through one end provided on the outer peripheral wall of the handle 3 or the outer tube 2 to facilitate inflation or exhaust into the air tube 14.

Further, the pipes of various functions provided in the inner tube 1 may be mutually common, or only one multi-purpose pipe may be provided in the inner pipe 1, and switching between functions may be performed according to the use. Only one multi-purpose pipe can be used to further reduce the diameter of the inner pipe 1 to facilitate inspection of any fine parts.

In a specific implementation, the inner tube 1 of the uncontrolled, controlled curved endoscope is completely shrunk inside the sleeve to reduce the cross-sectional area of the inner tube 1 for easy insertion into the outer tube 2. When the inner tube 1 is sleeved in the outer tube 2, the viewing angle of the camera 11 at the insertion end of the inner tube 1 faces forward. When the outer tube 2 enters the portion to be inspected, the camera 11 can play a guiding role to guide the outer tube 2 to enter. The area where observation is required. After the outer tube 2 reaches the observation site, the inner tube 1 is controlled to extend from the insertion end of the outer tube 2 by the telescopic control portion. As the length of the inner tube 1 is changed, the inner tube 1 gradually returns to the original curved shape, so that the viewing angle of the camera 11 provided at the insertion end of the inner tube 1 also changes, thereby surrounding each part to be inspected. The angles are checked to achieve the effect of a wide range of examinations.

Further, when the inner tube 1 protrudes from the outer tube 2, there are various forms of movement between the inner tube 1 and the outer tube 2, such as The outer tube 2 can be fixed, and the inner tube 1 can be controlled to protrude from the outer tube 2; the inner tube 1 can also be controlled to be fixed, and the outer tube 2 is moved in the opposite direction of the insertion direction, so that the inner tube 1 is externally The tube 2 is extended; it is also possible to control the inner tube 1 and the outer tube 2 to move at different speeds so that the inner tube 1 projects from the outer tube 2.

As shown in Fig. 7, the present invention also provides a controllable curved endoscope for inspecting various small parts. The controllable bending device comprises an inner tube 1 and an outer tube 2, the outer tube 2 is sleeved outside the inner tube 1, and the inner tube 1 can be retracted from the insertion end of the outer tube 2 by any length; the insertion end of the outer tube 2 is provided a camera and at least one light source; the outer tube 2 is an elastic member having a curved shape, and the inner tube 1 has a different curved shape from the outer tube 2, and when the outer tube 2 is sleeved outside the inner tube 1, the outer tube 2 is deformed, The outer tube 2 is sleeved outside the inner tube 1 in the same manner as the inner tube 1; when the inner tube 1 is retracted from the outer tube 2, the portion of the outer tube 2 that protrudes from the inner tube 1 is deformed, and the outer tube 2 is restored. Some have a curved shape.

Further, in the present invention, as shown in FIGS. 8 to 9, the outer tube 2 is preferably an elastic member having a certain curved shape, and when the outer tube 2 is alone, it can maintain a certain shape when the outer tube 2 is in an external force. A certain deformation can occur under the action of the outer tube 2, and the outer tube 2 can be restored to its original curved shape after being removed as an external force applied to the outer tube 2. In the present invention, the curved shape of the outer tube 2 may be a hook shape in one direction, or may be a spiral shape, and the outer tube 2 may be shaped into various curved shapes depending on the use.

Further, the inner tube 1 has a different curved shape from the outer tube 2, and in the present invention, the inner tube 1 is preferably a straight tube for easy access to a patient or other small parts.

In the present invention, when the inner tube 1 is sleeved in the outer tube 2, since the inner tube 1 is less likely to be deformed or the deformation of the inner tube 1 is smaller than that of the outer tube 2, the outer tube 2 is deformed, and when the inner tube 1 is deformed, After entering the outer tube 2, the outer tube 2 is sleeved outside the inner tube 1 in the same manner as the inner tube 1, and at this time, the inner tube 1 can maintain its original shape and can be slightly deformed.

Further, when the user controls the inner tube 1 to be retracted from the insertion end of the outer tube 2, as the insertion end of the outer tube 2 is separated from the inner tube 1, the protruding portion of the outer tube 2 is deformed, and the outer tube 2 is restored. Some have a curved shape; and when the user again controls the inner tube 1 and the outer tube 2 to fit together, the outer tube 2 is again deformed into the same shape as the inner tube 1.

In one embodiment, the outer tube 2 is preferably an elastic hose, and the inner tube 1 is preferably a rigid tube, the hardness of the outer tube 2 being significantly less than the hardness of the inner tube 1, under such conditions, when the outer tube 2 is After the inside of the inner tube 1, the outer tube 2 is deformed according to the shape of the inner tube 1, and the portion of the inner and outer tubes 2 that is fitted into the inner tube 1 becomes the same shape as the inner tube 1.

In another embodiment, the inner tube 1 and the outer tube 2 are both rigid tubes or the inner tube 1 and the outer tube 2 are both hoses, as long as the inner tube 1 has a hardness greater than that of the outer tube 2. In this way, when the inner tube 1 enters the outer tube 2, the outer tube 2 can be shaped Changed to become the same shape as the inner tube 1; or the outer tube 2 is deformed together with the inner tube 1, but at this time, the shape of the inner tube 1 is small, and the shape of the outer tube 2 is large, so the outer tube 2 becomes the same or similar shape as the inner tube 1.

In the present invention, in order to give the operator a more comfortable hand feeling, the handle 3 can also be provided at the non-insertion end of the outer tube 2, which is convenient for the user to operate. In order to make the connection between the handle 3 and the outer tube 2 more reliable, a connection member between the handle 3 and the outer tube 2 may be provided to reinforce the connection between the handle 3 and the outer tube 2.

Further, the handle 3 may be provided with a telescopic control portion for controlling the retraction displacement of the inner tube 1 from the outer tube 2. The telescopic control unit can control the displacement of the inner tube 1 in the outer tube 2.

In the present invention, in order to better treat the patient, the controllable curved endoscope can also achieve more functions by providing functional modules for different purposes in the outer tube 2.

Further, an instrument tube 15 for extending into the treatment instrument may be disposed in the outer tube 2, and one end of the instrument tube 15 is disposed on the outer peripheral wall of the handle 3 or the outer tube 2 outside the human body, and the instrument tube 15 is further One end is provided on the insertion end surface of the outer tube 2. When any lesion is found during the examination, the auxiliary treatment device can be inserted into the patient from the instrument tube 15 in time to treat the patient, and the suspected lesion can also be sampled.

Further, a water pipe 13 for water passage may be disposed in the outer pipe 2, one end of the water pipe 13 is disposed on the outer peripheral wall of the handle 3 or the outer pipe 2 outside the human body, and the other end of the water pipe 13 is disposed on the outer pipe 2 Insert on the end face. When the controllable curved endoscope enters the patient's body, if an obstruction blocks the camera 11, the physiological saline can be injected into the patient through the water tube 13, and the physiological saline flowing out from one end of the insertion end surface of the inner tube 1 can be The blood is dilute, or the obstruction is opened, so that the shooting environment of the camera 11 becomes clear. At the same time, the water pipe 13 can also be used as the water suction pipe 13. By providing a liquid suction device outside the water pipe 13 provided on the wall of the handle 3 or the outer pipe 2, the diluted water or the obstruction can be sucked out by the water pipe 13 from the patient. Excreted in the body.

Further, the outer tube 2 may further be provided with a gas tube 14 for ventilation. One end of the air tube 14 is disposed on the outer peripheral wall of the handle 3 or the outer tube 2 outside the human body, and the other end of the air tube 14 is disposed at the outer tube 2. On the end face. Further, the air tube 14 communicates with the air intake device or the exhaust device through one end provided on the outer peripheral wall of the handle 3 or the outer tube 2 to facilitate inflation or exhaust into the air tube 14.

Further, the pipes of various functions provided in the outer tube 2 may be mutually common, or a multi-purpose pipe may be provided only in the outer pipe 2, and switching between functions may be performed according to the use. Only one multi-purpose pipe can be used to further reduce the diameter of the outer pipe 2, so that any fine parts can be inspected.

In the specific implementation, the outer tube 2 is sleeved outside the inner tube 1, and the viewing angle of the camera 11 at the insertion end of the outer tube 2 is toward the front. When the outer tube 2 enters the portion to be inspected, the camera 11 can play a guiding role to guide the outer tube. 2 Enter the area where you want to observe. After the outer tube 2 reaches the observation site, the expansion control unit controls the insertion of the inner tube 1 from the outer tube 2 Indented at the end. As the indentation displacement of the inner tube 1 increases, the outer tube 2 gradually returns to the original curved shape, so that the viewing angle of the camera 11 provided at the insertion end of the outer tube 2 also changes, thereby surrounding each part to be inspected. The angles are checked to achieve the effect of a wide range of examinations.

Further, when the inner tube 1 is retracted from the outer tube 2, there are various forms of movement between the inner tube 1 and the outer tube 2. For example, the outer tube 2 can be fixed, and the inner tube 1 is controlled from the outer tube 2. Indentation; it is also possible to control the inner tube 1 to be fixed, and the movement of the outer tube 2 in the insertion direction to retract the inner tube 1 from the outer tube 2; it is also possible to control the inner tube 1 and the outer tube 2 at different speeds. The movement is performed such that the inner tube 1 and the outer tube 2 are relatively displaced, thereby retracting the inner tube 1 into the outer tube 2.

In summary, the invention has the advantages of simple structure, convenient use, low cost, small size, convenient carrying, no precision parts are not easily damaged, and the inner tube 1 can be extended from the outer tube 2 according to actual needs during the inspection process. The length, so that the inspection site is thoroughly and meticulously examined, the inspection can be carried out without dead angle, and the insertion end of the endoscope has a small outer diameter, which does not cause damage to the patient or the item to be inspected, and is worthy of widespread application. .

The above-described embodiments are merely illustrative of the principles of the invention and its effects, and are not intended to limit the invention. Modifications or variations of the above-described embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and scope of the invention will be covered by the appended claims.

Claims

A controllable curved endoscope, comprising: an inner tube and an outer tube, wherein the inner tube is sleeved in the outer tube, and the inner tube can protrude from the insertion end of the outer tube a length; a insertion end of the inner tube is provided with a camera and at least one light source; the inner tube is an elastic member having a curved shape, and the outer tube has a curved shape different from the inner tube, when the inner tube When the inner tube is sleeved, the inner tube is deformed, and the inner tube is sleeved in the outer tube in the same manner as the outer tube; when the inner tube protrudes from the outer tube The protruding portion of the inner tube is deformed to restore the original curved shape of the inner tube.
The controllable curved endoscope of claim 1 wherein said inner tube is a flexible hose and said outer tube is a rigid tube.
The controllable curved endoscope according to claim 1, wherein the inner tube and the outer tube are both rigid tubes or hoses, and the hardness of the outer tube is greater than the hardness of the inner tube .
The controllable curved endoscope according to claim 2 or 3, wherein the non-inserted end of the outer tube is provided with a handle.
The controllable curved endoscope according to claim 4, wherein an instrument channel is disposed in the inner tube, and an inlet of the instrument channel is disposed on a periphery of the handle or the outer tube outside the human body On the wall, the outlet of the instrument channel is disposed on the insertion end surface of the inner tube.
The controllable curved endoscope according to claim 4, wherein the inner tube is provided with a water pipe for water passage, and one end of the water pipe is disposed on the handle or the outer tube is located outside the human body. On the outer peripheral wall, the other end of the water conduit is disposed on the insertion end surface of the inner tube.
A controllable curved endoscope, comprising: an inner tube and an outer tube, the outer tube sleeved outside the inner tube, and the inner tube can be retracted from the insertion end of the outer tube Any length; the insertion end of the outer tube is provided with a camera and at least one light source; the outer tube is an elastic member having a curved shape, and the inner tube has a curved shape different from the outer tube, when the outer tube When the tube sleeve is disposed outside the inner tube, the outer tube is deformed, and the outer tube is sleeved outside the inner tube in the same manner as the inner tube; when the inner tube is from the outer tube When retracting, the outer tube is extended The portion of the inner tube is deformed to restore the original curved shape of the outer tube.
The controllable curved endoscope of claim 7 wherein said outer tube is a flexible hose and said inner tube is a rigid tube.
The controllable curved endoscope according to claim 7, wherein the inner tube and the outer tube are both rigid tubes or hoses, and the hardness of the inner tube is greater than the hardness of the outer tube .
A controllably bendable endoscope according to claim 8 or claim 9 wherein the non-inserted end of the outer tube is provided with a handle.
The controllable curved endoscope according to claim 10, wherein an instrument channel is disposed in the outer tube, and an inlet of the instrument channel is disposed on a periphery of the handle or the outer tube outside the human body On the wall, the outlet of the instrument channel is disposed on the insertion end face of the outer tube.
The controllable curved endoscope according to claim 10, wherein the outer tube is provided with a water pipe for water passage, and one end of the water pipe is disposed on the handle or the outer tube is located outside the human body. On the outer peripheral wall, the other end of the water conduit is disposed on the insertion end surface of the outer tube.