Medical endoscope

Abstract

The utility model relates to the technical field of medical instruments, and discloses a medical endoscope which comprises an operating handle and a flexible endoscope tube. The operating handle comprises a shell, a wheel rod, a wheel sheet, a driving shaft and a plurality of pairs of traction wires; one end of the shell is coaxially provided with the wheel rod and the wheel sheet, and the other end of the shell is rotationally connected with the near end of the flexible endoscope tube; the wheel rod is rotationally connected with the shell, the driving shaft is located in the shell, the axis of the driving shaft perpendicularly intersects with the rotating axis of the wheel rod, the multiple pairs of traction wires are symmetrically arranged on the two sides of the rotating axis of the driving shaft, one ends of the traction wires are fixedly connected with the wheel rod, and the other ends of the traction wires extend to the far end of the flexible endoscope tube. And the far end of the flexible endoscope tube is fixedly connected with the far end of the flexible endoscope tube. The flexible endoscope has the advantages that when the flexible endoscope tube rotates, the far end of the flexible endoscope tube can be bent, accurate imaging of a focus in a multi-angle range can be achieved, and the flexible endoscope is simple in structure and convenient to adjust.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a medical endoscope. Background Art

[0002] In clinical diagnosis and treatment, endoscopes are not only used for observation and imaging, but also for surgical treatment. Medical endoscopes have become an indispensable tool in clinical diagnosis and treatment, and are widely used in disease exploration and surgical treatment in multiple clinical departments.

[0003] In existing endoscopes, the flexible tube and the operating handle are fixedly connected. When in use, the distal end of the flexible tube can only be bent. Due to the complex internal tissue structure of the human body, there are many blind spots in the field of view, which makes it impossible to accurately image the lesion, resulting in inaccurate diagnosis and easy to cause medical accidents. Utility Model Content

[0004] The purpose of the utility model is to provide a medical endoscope, wherein the distal end of the flexible endoscope tube can be bent while rotating, thereby realizing accurate imaging of the lesion within a multi-angle range, having a simple structure and convenient adjustment.

[0005] In order to achieve the above-mentioned object, the utility model provides a medical endoscope, an operating handle and a flexible endoscope tube;

[0006] The operating handle includes a housing, a wheel rod, a wheel piece, a drive shaft, and multiple pairs of traction wires; one end of the housing is coaxially provided with the wheel rod and the wheel piece, and the other end of the housing is rotatably connected to the proximal end of the flexible mirror tube;

[0007] The wheel rod is rotatably connected to the housing, the wheel piece is rotatably connected to the wheel rod and fixedly connected to the drive shaft, the drive shaft is located in the housing and rotatably connected to the housing, the axis of the drive shaft and the rotation axis of the wheel rod are perpendicularly intersected, a plurality of pairs of traction wires are symmetrically arranged on both sides of the rotation axis of the drive shaft, and one end of each pair is fixedly connected to the wheel rod, and the other end of each pair extends to the distal end of the flexible mirror tube and is fixedly connected to the distal end of the flexible mirror tube;

[0008] Among them, the wheel rod is rotated to adjust the length of the traction wire, thereby driving the distal end of the flexible mirror tube to bend; the wheel is rotated, the drive shaft rotates to drive the traction wire to rotate, and then drives the flexible mirror tube to rotate around the axis of the shell.

[0009] Furthermore, the flexible mirror tube is provided with a first channel, a second channel, a third channel, a fourth channel and a fifth channel along its extension direction. The first channel is used for passing the traction wire, the second channel is used for passing the grating optical fiber, the third channel is used for placing the external instrument optical fiber, the fourth channel is used for connecting the air supply device and / or the liquid supply device, and the fifth channel is provided with an illumination imaging module near the distal end of the flexible mirror tube.

[0010] Furthermore, it also includes an optical interference demodulation device, a positioning monitoring system and an image processing system. The optical interference demodulation device is electrically connected to the positioning monitoring system, the positioning monitoring system is electrically connected to the grating optical fiber, and the image processing system is electrically connected to the illumination imaging module.

[0011] Furthermore, the optical interference demodulation device includes a sensing light source, a coupling unit, a demodulation unit and an optical signal processing unit. The sensing light source is used to emit a monitoring light signal. The coupling unit is used to process the monitoring light signal to obtain a split light path signal. The optical signal processing unit is used to process the split light path signal into multiple light beams and send them to the grating optical fiber through the positioning monitoring system. The multiple light beams are reflected in the grating optical fiber to form a reflected light signal. The demodulation unit is used to process the reflected light signal to obtain the spatial position, bending deformation, and posture direction of the grating optical fiber and the external instrument optical fiber.

[0012] Furthermore, the housing is provided with a first interface and a second interface, the first interface is used to electrically connect the image processing system and the illumination imaging module, and the second interface is used to electrically connect the grating optical fiber and the positioning monitoring system.

[0013] Furthermore, an annular limiting groove for limiting the rotation of the drive shaft is provided in the shell.

[0014] Furthermore, the flexible mirror tube has a J-shaped appearance.

[0015] Furthermore, the traction wires are evenly distributed around the inner wall of the flexible mirror tube.

[0016] Furthermore, an annular clamping groove is provided at the end of the shell, and the flexible mirror tube is provided with an annular clamping portion corresponding to the annular clamping groove.

[0017] Compared with the prior art, the medical endoscope of the present invention has the following beneficial effects: the operating handle includes a shell, a wheel rod, a wheel piece, a drive shaft and multiple pairs of traction wires; since one end of the traction wire is fixedly connected to the wheel rod, and the other end extends to the distal end of the flexible mirror tube and is fixedly connected to the distal end of the flexible mirror tube, the distal end bending of the flexible mirror tube can be adjusted by rotating the wheel rod; at the same time, since the wheel piece and the wheel rod are rotatably connected, the wheel piece is rotated, the drive shaft rotates to drive the traction wire to rotate, and then drives the flexible mirror tube to rotate around the axis of the shell, which can achieve accurate imaging of the lesion within a multi-angle range, with a simple structure and convenient adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a medical endoscope according to an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the assembly of the operating handle and the flexible endoscope tube of the medical endoscope according to the embodiment of the present utility model;

[0020] Figure 3 This is another structural schematic diagram of the medical endoscope according to an embodiment of the present utility model;

[0021] Figure 4 This is a schematic structural diagram of the distal end face of the flexible mirror tube of the medical endoscope according to an embodiment of the present utility model;

[0022] In the figure, 1. operating handle; 11. shell; 111. first interface; 112. second interface; 113. annular limit groove; 114. annular clamping groove; 12. wheel rod; 13. wheel; 14. driving shaft; 15. traction wire; 2. flexible mirror tube; 21. first channel; 22. second channel; 23. third channel; 24. fourth channel; 25. fifth channel; 26. annular clamping part; 3. optical interference demodulation device; 4. positioning monitoring system; 5. image processing system. DETAILED DESCRIPTION

[0023] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "inside", "outside", etc. used in the present invention to indicate the orientation or position relationship are based on the position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the devices and elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of this utility model, it should be understood that the terms "first," "second," etc. are used to describe various types of information, but such information should not be limited to these terms. These terms are merely used to distinguish information of the same type from one another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information without departing from the scope of this utility model.

[0026] like Figure 1 As shown, a medical endoscope according to a preferred embodiment of the present invention comprises an operating handle 1 and a flexible mirror tube 2. For ease of description, the end of the flexible mirror tube 2 close to the operating handle 1 is defined as the proximal end, and the end away from the operating handle 1 is defined as the distal end. To simplify the structure, the distal end of the flexible mirror tube 2 can be bent while the flexible mirror tube 2 rotates. Specifically, in this embodiment, the operating handle 1 comprises a housing 11, a wheel rod 12, a wheel piece 13, a drive shaft 14, and a plurality of pairs of traction wires 15. The wheel rod 12 and the wheel piece 13 are coaxially provided at one end of the housing 11. The wheel rod 12 is rotatably connected to the housing 11. The wheel piece 13 is rotatably connected to the wheel rod 12 and fixedly connected to the drive shaft 14. The drive shaft 14 is located in the housing 11 and is rotatably connected to the housing 11. The axis of the drive shaft 14 and the rotation axis of the wheel rod 12 intersect perpendicularly. To facilitate limiting the rotation of the drive shaft 14, an annular limiting groove 113 is provided in the housing 11. The other end of the housing 11 is rotatably connected to the proximal end of the flexible mirror tube 2. Multiple pairs of traction wires 15 are symmetrically arranged on either side of the rotation axis of the drive shaft 14, with one end fixedly connected to the wheel rod 12 and the other end extending to the distal end of the flexible mirror tube 2 and fixedly connected to the distal end of the flexible mirror tube 2. In the process of achieving the bending of the distal end of the flexible mirror tube 2, the wheel rod 12 is rotated to adjust the length of the traction wires 15, thereby driving the distal end of the flexible mirror tube 2 to bend. At the same time, in order to adjust the rotation of the flexible mirror tube 2 and achieve precise imaging of the lesion within a multi-angle range, the wheel 13 is rotated, and the drive shaft 14 rotates, driving the traction wires 15 to rotate, thereby driving the flexible mirror tube 2 to rotate about the axis of the housing 11.

[0027] Furthermore, in order to facilitate the rotational connection between the housing 11 and the flexible mirror tube 2, in this embodiment, refer to Figure 2 The end of the shell 11 is provided with an annular clamping groove 114, and the flexible mirror tube 2 is provided with an annular clamping portion 26 corresponding to the annular clamping groove 114. The annular clamping portion 26 is installed in the annular clamping groove 114, so that the shell 11 and the flexible mirror tube 2 can rotate relative to each other.

[0028] Furthermore, in the prior art, when an external instrument and an endoscope are used together, the external instrument optical fiber is inserted into the endoscope. When the flexible mirror tube 2 bends, the external instrument optical fiber bends synchronously, and the spatial position, bending deformation, and posture direction of various instrument optical fibers cannot be measured. The instrument optical fiber is easily damaged by excessive bending. Therefore, in this embodiment, refer to Figure 4 The flexible mirror tube 2 is provided with a first channel 21, a second channel 22, a third channel 23, a fourth channel 24, and a fifth channel 25 along its extension direction. Specifically, the first channel 21 is used to pass the traction wire 15, which is evenly distributed around the inner wall of the flexible mirror tube 2. The second channel 22 is used to pass the grating optical fiber, the third channel 23 is used to place the external instrument optical fiber, the fourth channel 24 is used to connect the air supply device and / or the liquid supply device, and the fifth channel 25 is provided with an illumination imaging module near the distal end of the flexible mirror tube. Among them, the grating optical fiber is a sensing optical fiber with an integrated grating array and optical fiber three-dimensional shape sensing technology. The distal end of the grating optical fiber is flush with the distal end head of the flexible mirror tube 2 and is fixedly arranged in the second channel 22. The spatial position, bending deformation, and posture direction of the grating optical fiber are indirectly measured by the spatial position, bending deformation, and posture direction of the external instrument optical fiber.

[0029] Furthermore, in order to realize the detection function of the grating fiber, see Figure 3 The medical endoscope of the present invention also includes an optical interferometer demodulation device 3, a positioning monitoring system 4, and an image processing system 5. The optical interferometer demodulation device 3 is electrically connected to the positioning monitoring system 4, which is electrically connected to the grating optical fiber, and the image processing system 5 is electrically connected to the illumination imaging module. Specifically, the key information such as the bending curvature and bending direction detected by the local strain of the grating optical fiber can be used to autonomously perceive the spatial position of the grating optical fiber, and the three-dimensional shape of the grating optical fiber can be reconstructed in real time through a high-precision three-dimensional curve algorithm. The spatial position, bending deformation, and posture direction of the endoscope and various instrument optical fibers used through the endoscope instrument channel can be measured and dynamically displayed in real time in situ, and a three-dimensional image is generated and displayed in real time on the display screen of the positioning monitoring system 4.

[0030] Specifically, in this embodiment, the optical interference demodulation device includes a sensing light source, a coupling unit, a demodulation unit and an optical signal processing unit, wherein, when it is necessary to monitor the spatial position, bending deformation and attitude direction of the grating optical fiber, the sensing light source is used to emit a monitoring light signal, the coupling unit is used to process the monitoring light signal to obtain a split light path signal, the optical signal processing unit is used to process the split light path signal into multiple light beams and send them to the grating optical fiber through the positioning monitoring system 4, the multiple light beams are reflected in the grating optical fiber to form a reflected light signal, the demodulation unit is used to process the reflected light signal to obtain the spatial position, bending deformation and attitude direction of the grating optical fiber, and send the information to the positioning monitoring system 4.

[0031] Specifically, the positioning monitoring system 4 includes a computer-aided system and a display screen, wherein the computer-aided system is loaded with high-precision three-dimensional dynamic algorithm software and optical sensing monitoring software. The three-dimensional dynamic algorithm software is used to utilize optical fiber three-dimensional shape sensing technology to reconstruct the spatial position of the grating optical fiber in real time, and to measure and dynamically display the spatial position, bending deformation, and posture direction of the endoscope and various instrument optical fibers used through the endoscope instrument channel in real time. The optical sensing monitoring software is used to timely monitor the pH value physiological indicators of the lesion tissue, and then analyze and judge the nature and pathology of the lesion tissue. The display screen is used to display the generated three-dimensional image and pH value physiological indicator information to accurately judge the nature and pathology of the lesion, and to formulate a more scientific and reasonable clinical diagnosis and treatment plan in a timely manner, thereby reducing problems such as misjudgment of lesion type, vascular rupture and bleeding, tumor implantation and metastasis, and damage to important organs caused by inaccurate exploration and inaccurate diagnosis and treatment, thereby more accurately and reliably operating and using the endoscope.

[0032] Furthermore, in this embodiment, a first interface 111 and a second interface 112 are provided on the housing 11 . The first interface 111 is used to electrically connect the image processing system 5 and the illumination imaging module, and the second interface 112 is used to electrically connect the grating optical fiber and the positioning monitoring system 4 .

[0033] Furthermore, in this embodiment, in order to facilitate the design of the flexible mirror tube 2 , the flexible mirror tube 2 has a J-shaped outer shape.

[0034] In summary, the embodiment of the present invention provides a medical endoscope, and the operating handle 1 includes a shell 11, a wheel rod 12, a wheel piece 13, a drive shaft 14 and multiple pairs of traction wires 15; since one end of the traction wire 15 is fixedly connected to the wheel rod 12, and the other end extends to the distal end of the flexible mirror tube 2 and is fixedly connected to the distal end of the flexible mirror tube 2, the distal end bending of the flexible mirror tube 2 can be adjusted by rotating the wheel rod 12; at the same time, since the wheel piece 13 and the wheel rod 12 are rotatably connected, the wheel piece 13 is rotated, the drive shaft 14 rotates and drives the traction wire 15 to rotate, and then drives the flexible mirror tube 2 to rotate around the axis of the shell 11, which can achieve accurate imaging of the lesion within a multi-angle range, with a simple structure and convenient adjustment.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A medical endoscope, characterized in that: operating handle and flexible mirror tube; The operating handle includes a housing, a wheel rod, a wheel piece, a drive shaft, and multiple pairs of traction wires; one end of the housing is coaxially provided with the wheel rod and the wheel piece, and the other end of the housing is rotatably connected to the proximal end of the flexible mirror tube; The wheel rod is rotatably connected to the housing, the wheel piece is rotatably connected to the wheel rod and fixedly connected to the drive shaft, the drive shaft is located in the housing and rotatably connected to the housing, the axis of the drive shaft and the rotation axis of the wheel rod are perpendicularly intersected, a plurality of pairs of traction wires are symmetrically arranged on both sides of the rotation axis of the drive shaft, and one end of each pair is fixedly connected to the wheel rod, and the other end of each pair extends to the distal end of the flexible mirror tube and is fixedly connected to the distal end of the flexible mirror tube; Among them, the wheel rod is rotated to adjust the length of the traction wire, thereby driving the distal end of the flexible mirror tube to bend; the wheel is rotated, the drive shaft rotates to drive the traction wire to rotate, and then drives the flexible mirror tube to rotate around the axis of the shell.

2. The medical endoscope according to claim 1, wherein: The flexible mirror tube is provided with a first channel, a second channel, a third channel, a fourth channel and a fifth channel along its extension direction. The first channel is used for passing the traction wire, the second channel is used for passing the grating optical fiber, the third channel is used for placing the external instrument optical fiber, the fourth channel is used for connecting the air supply device and / or the liquid supply device, and the fifth channel is provided with an illumination imaging module near the distal end of the flexible mirror tube.

3. The medical endoscope according to claim 2, wherein: It also includes an optical interference demodulation device, a positioning monitoring system and an image processing system. The optical interference demodulation device is electrically connected to the positioning monitoring system, the positioning monitoring system is electrically connected to the grating optical fiber, and the image processing system is electrically connected to the illumination imaging module.

4. The medical endoscope according to claim 3, wherein: The optical interference demodulation device includes a sensing light source, a coupling unit, a demodulation unit and an optical signal processing unit. The sensing light source is used to emit a monitoring light signal. The coupling unit is used to process the monitoring light signal to obtain a split light path signal. The optical signal processing unit is used to process the split light path signal into multiple light beams and send them to the grating optical fiber through the positioning monitoring system. The multiple light beams are reflected in the grating optical fiber to form a reflected light signal. The demodulation unit is used to process the reflected light signal to obtain the spatial position, bending deformation and posture direction of the grating optical fiber and the external instrument optical fiber.

5. The medical endoscope according to claim 3, wherein: The housing is provided with a first interface and a second interface, the first interface is used to electrically connect the image processing system and the illumination imaging module, and the second interface is used to electrically connect the grating optical fiber and the positioning monitoring system.

6. The medical endoscope according to claim 1, wherein: An annular limiting groove for limiting the rotation of the drive shaft is provided in the shell.

7. The medical endoscope according to claim 1, wherein: The flexible mirror tube has a J-shaped appearance.

8. The medical endoscope according to claim 1, wherein: The traction wires are evenly distributed around the inner wall of the flexible mirror tube.

9. The medical endoscope according to claim 1, wherein: An annular clamping groove is provided at the end of the shell, and the flexible mirror tube is provided with an annular clamping portion corresponding to the annular clamping groove.

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