Endoscope capable of continuously turning

Abstract

The utility model discloses an endoscope capable of continuously turning, which comprises an operation part for controlling the endoscope, an insertion part guided into a human body, a front end part for capturing images and a connecting part for butting a video system, and is characterized in that the insertion part comprises an optical fiber inner core tube provided with a light guide system and a microscope lens, and a flexible bendable inner catheter arranged in the optical fiber inner core tube; the bending head end of the flexible bendable inner catheter can be controlled to be bent through the operation part, and the head end of the optical fiber inner core tube is provided with a through hole for the flexible bendable inner catheter to penetrate out. The flexible bendable inner conduit can be pushed to reciprocate along the interior of the optical fiber inner core tube. When the optical fiber passes through a bend, the flexible bendable inner conduit is pushed in advance, the flexible bendable inner conduit is controlled to bend and pass through the bend, and then the optical fiber inner core tube is pushed forwards and passes through the bend along the flexible bendable inner conduit. And when a plurality of curves are encountered, all that is needed is to circulate the operation.

Description

Technical Field

[0001] The present invention relates to the field of surgical instruments for ureteral calculi, and particularly to an endoscope capable of continuously bending. Background Art

[0002] Flexible endoscopes are widely used medical devices. Compared with rigid endoscopes, they have advantages such as multiple viewing angles and high patient comfort. The operator can complete a full range of observations by controlling the bending degree of the distal end of the endoscope and assist the endoscope to pass through some curves in the internal organs.

[0003] An endoscope mainly consists of the following parts:

[0004] 1. Operating part: The operating part is located at the rear end of the endoscope and is the part used by the doctor to control the endoscope. It includes control devices such as water-gas buttons, suction buttons, and size knobs for operating various functions of the endoscope.

[0005] 2. Insertion part: The insertion part is adjacent to the operating part and is a long tube, usually composed of multiple layers of materials to ensure its flexibility and durability. It is responsible for guiding the front end of the endoscope into the human body.

[0006] 3. Front end part: The front end part is located at the farthest end of the insertion part and includes a camera or objective lens, a lighting device, etc. It is the part of the endoscope that comes into contact with the internal tissues of the human body and is responsible for capturing images.

[0007] 4. Connection part: The connection part connects the endoscope to an external display or processing device. It usually includes cables and other interfaces for transmitting images and data.

[0008] In the actual use process, when the operator wants to operate a flexible endoscope to pass through soft, narrow and multi-curved hollow organs such as the ureter, intestine, and ileal conduit, problems often occur where it cannot pass through the curves.

[0009] Specifically, when the operator uses the endoscope to pass through a curve, first, the endoscope needs to be pressed against the large bend side of the curve, so that the force pushing the endoscope forward can be redirected to enable the endoscope to continue to move forward. When passing through a larger turning angle, due to the limited length of the bending part of the endoscope, the uncontrollable inserted part at the rear end of the bending part cannot be bent, resulting in the operator being unable to push the insertion part of the endoscope forward continuously.

[0010] When encountering the above situation, the operator can only continue to push the endoscope forward and directly poke the intestine, relying on the resistance of the intestinal wall to force the endoscope to bend. During this process, since the force of the endoscope is directly applied to the intestinal wall, it is very easy to cause organ perforation, resulting in a relatively high failure rate for passing through each curve.

[0011] Therefore, in existing endoscopic surgeries, it is relatively difficult to pass through a large bend. If encountering two consecutive large-angle bends, it is almost impossible to pass through. Summary of the Invention

[0012] The object of the present invention is to solve the problem in the prior art that an endoscope cannot continuously turn in a short distance and with large bends, and to provide an endoscope that can continuously turn.

[0013] To solve the above technical problems, the technical method adopted by the present invention is: The present invention discloses an endoscope that can continuously turn, including an operation part for controlling the endoscope, an insertion part introduced into the human body, a front end part for capturing images, and a connection part for docking with a video system. It is characterized in that: the insertion part includes an optical fiber inner core tube provided with an optical guiding system and a microscopic lens, and a flexible and bendable inner catheter arranged inside the optical fiber inner core tube;

[0014] The bendable head end of the flexible and bendable inner catheter can be controlled to bend by the operation part, and a through hole for the flexible and bendable inner catheter to pass through is provided at the head end of the optical fiber inner core tube;

[0015] The flexible and bendable inner catheter can reciprocate inside the tube of the optical fiber inner core tube under pushing.

[0016] Further, the bendable head end includes a bending assembly and a traction end for controlling the bending direction of the bending assembly;

[0017] The bending assembly includes several groups of link rods, and two adjacent link rods are linked by hinges; the link rod at the forefront of the several link rods is the first link rod;

[0018] The traction end includes a traction rope and a traction block for driving the traction rope to move left and right; both sides of the traction block are respectively connected to both sides of the first link rod through the traction rope.

[0019] Further, inside the traction end, tension wheels for tightening the traction rope are provided along both sides of the traction block.

[0020] Further, the traction end is fixed on the outer end face of the flexible and bendable inner catheter and can push the flexible and bendable inner catheter to move.

[0021] Further, an extension section is provided between the traction end and the flexible and bendable inner catheter; at the end of the optical fiber inner core tube, an inner catheter sliding groove for the extension section to reciprocate is provided.

[0022] Further, the traction rope includes a left traction and a right traction; the front end of the left traction is connected to the top of the left side of the first link rod, and the end is connected to the left side of the traction block;

[0023] The right traction front end is connected to the right top end of the first link rod, and the end is connected to the right side of the traction block.

[0024] Further, the front end portion is located at the farthest end of the insertion portion and includes a camera and a lighting device.

[0025] Further, the connection part interface includes one or more of USB, HDMI, RJ45 or Micro-Coax interfaces. Beneficial effects

[0026] In this application, the existing single optical fiber tube of the insertion portion is replaced with an optical fiber inner core tube and a flexible bendable inner catheter arranged in the optical fiber inner core tube. When passing through a bend, first push the flexible bendable inner catheter forward, control the bending of the flexible bendable inner catheter to pass through the bend, and then push the optical fiber inner core tube forward to pass through the bend along the flexible bendable inner catheter. When encountering multiple bends, the above operations can be repeated. Therefore, this device solves the problem that the length of the bending portion of the existing endoscope is limited, and the insertion portion that cannot be controlled at the rear end of the bending portion cannot be bent. Description of the drawings

[0027] Figure 1 Schematic diagram of the continuous bending state of the endoscope of the present invention;

[0028] Figure 2 Schematic diagram of the overall structure of the flexible bendable inner catheter in the present invention;

[0029] Figure 3 Schematic diagram of the structure of the flexible bendable inner catheter after removing the outer tube wall in the present invention;

[0030] Figure 4 Schematic diagram of the connection between the optical fiber inner core tube and the flexible bendable inner catheter in the present invention. Detailed implementation manners

[0031] The present invention will be further described in detail below in conjunction with the description of the drawings and the detailed implementation manners.

[0032] As Figures 1-4 shown, the present invention discloses a continuously bendable endoscope, including an operation portion for controlling the endoscope, an insertion portion for introducing into the human body, a front end portion for capturing images, and a connection portion for docking with a video system. The front end portion is located at the farthest end of the insertion portion and includes a camera and a lighting device. The connection part interface includes one or more of USB, HDMI, RJ45 or Micro-Coax interfaces. The insertion portion includes an optical fiber inner core tube 1 provided with an optical guiding system and a microscopic lens, and a flexible bendable inner catheter 2 arranged in the optical fiber inner core tube 1;

[0033] The bent head end of the flexible and bendable inner catheter 2 can be bent by operating the operating part. The head end of the optical fiber inner core tube 1 is provided with a through hole through which the flexible and bendable inner catheter 2 can pass through; the bent head end includes a bending assembly 21 and a traction end 22 for controlling the bending direction of the bending assembly 21; the traction end 22 is fixed on the outer end face of the flexible and bendable inner catheter 2 and can push the flexible and bendable inner catheter 2 to move.

[0034] The bending assembly 21 includes several groups of link rods 200, and two adjacent link rods 200 are linked by a hinge 23; the link rod at the frontmost end of several link rods 200 is the first link rod 201;

[0035] The traction end 22 includes a traction rope 221 and a traction block 222 for driving the traction rope 221 to move left and right; both sides of the traction block 222 are respectively connected to both sides of the first link rod 201 through the traction rope 221.

[0036] Inside the traction end 22, tension wheels 223 for tightening the traction rope 221 are provided along both sides of the traction block 222.

[0037] An extension section is provided between the traction end 22 and the flexible and bendable inner catheter 2; at the end of the optical fiber inner core tube 1, an inner catheter chute 10 is provided for the extension section to reciprocate. The flexible and bendable inner catheter 2 can be reciprocated inside the tube of the optical fiber inner core tube 1 under the push.

[0038] Among them, the traction rope 221 includes a left traction 2211 and a right traction 2212; the front end of the left traction 2211 is connected to the left top end of the first link rod 201, and the end is connected to the left side of the traction block 222;

[0039] The front end of the right traction 2212 is connected to the right top end of the first link rod 201, and the end is connected to the right side of the traction block 222.

[0040] During operation, the operator inserts the endoscope assembly deep into the bent part of the viscera, pushes the traction block 222 backward, so that the front end of the flexible and bendable inner catheter 2 is bent. Since the optical fiber inner core tube 1 is a flexible structure, the optical fiber inner core tube 1 will be bent in the same direction under the drive of the flexible and bendable inner catheter 2.

[0041] The operator keeps the shape of the flexible and bendable inner catheter 2 unchanged, and pushes the optical fiber inner core tube 1 forward along the flexible and bendable inner catheter 2, and the optical fiber inner core tube 1 can advance along the bending direction of the front end of the flexible and bendable inner catheter 2 and pass through the bend.

[0042] When the optical fiber inner core tube 1 enters the bend, the operator relaxes the traction block 222, then the flexible and bendable inner catheter 2 will return to the flexible state. At this time, the operator keeps the position of the optical fiber inner core tube 1 unchanged and pushes the flexible and bendable inner catheter 2 forward along the optical fiber inner core tube 1, then the flexible and bendable inner catheter 2 will advance inside the already in-place optical fiber inner core tube 1 until it returns to the initial combined state.

[0043] At this time, the operator can push the components in the combined state to the next bend, repeat the above actions, and complete the bending operation of the instrument.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An endoscope capable of continuous bending, comprising an operating portion for manipulating the endoscope, an insertion portion for introducing the endoscope into a human body, a front end portion for capturing images, and a connection portion for docking a video system, characterized in that: The insertion portion comprises an optical fiber inner core tube (1) provided with a light guide system and a microscopic lens, and a flexible and bendable inner conduit (2) arranged in the optical fiber inner core tube (1); The bending head end of the flexible bendable inner conduit (2) can be controlled to bend by an operating unit, and the head end of the optical fiber inner core tube (1) is provided with a through hole through which the flexible bendable inner conduit (2) can pass through; The flexible and bendable inner conduit (2) can reciprocate along the inner tube of the optical fiber inner core tube (1) under the pushing force.

2. The continuously bendable endoscope according to claim 1, characterized in that: The bending head end comprises a bending component (21) and a traction end (22) for controlling the bending direction of the bending component (21); The bending assembly (21) comprises a plurality of groups of link rods (200), wherein two adjacent link rods (200) are linked via a hinge (23); the link rod arranged at the front end of the plurality of link rods (200) is a first link rod (201); The traction end (22) comprises a traction rope (221) and a traction block (222) for driving the traction rope (221) to move left and right; two sides of the traction block (222) are respectively connected to two sides of the first link rod (201) via the traction rope (221).

3. The continuously bendable endoscope according to claim 2, characterized in that: In the traction end (22), tensioning wheels (223) for tightening the traction rope (221) are provided along both sides of the traction block (222).

4. The continuously bendable endoscope according to claim 2, characterized in that: The traction end (22) is fixedly mounted on the outer end surface of the flexible and bendable inner conduit (2), and can push the flexible and bendable inner conduit (2) to move.

5. The continuously bendable endoscope according to claim 4, characterized in that: An extension section is provided between the traction end (22) and the flexible bendable inner conduit (2); and an inner conduit slide groove (10) for allowing the extension section to reciprocate is provided at the end of the optical fiber inner core tube (1).

6. The continuously bendable endoscope according to claim 2, characterized in that: The traction rope (221) comprises a left traction rope and a right traction rope (2212); the front end of the left traction rope (2211) is connected to the top end of the left side of the first link rod (201), and the end thereof is connected to the left side of the traction block (222); The front end of the right traction (2212) is connected to the top end of the right side of the first link rod (201), and the end is connected to the right side of the traction block (222).

7. The continuously bendable endoscope according to claim 1, characterized in that: The front end portion is located at the farthest end of the insertion portion and includes a camera and a lighting device.

8. The continuously bendable endoscope according to claim 1, characterized in that: The connection part interface includes one or more of USB, HDMI, RJ45 or Micro-Coax interface.

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