Disposable duodenum endoscope

Abstract

The invention discloses a disposable duodenum endoscope which comprises a head end part, an insertion part and an operation part, the head end part is connected with the insertion part, the insertion part is connected with the operation part, an instrument channel extending into the head end part is arranged in the insertion part, and an instrument penetrates out through the instrument channel. The forceps lifting device can rotate towards the lateral direction and away from the direction of the extension line of the instrument channel, the forceps lifting device can drive the instrument to be bent towards the lateral direction in the lateral direction, and an avoiding space can be formed when the forceps lifting device is away from the direction of the extension line of the instrument channel so that the instrument can straightly go out in the forward looking direction; therefore, the instrument can perform medical operation in both the lateral direction and the foresight direction.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a disposable duodenal endoscope. Background Technology

[0002] An electronic duodenoscope includes a lens, an illumination system, a water-air spray device, a forceps channel, and a forceps lifting mechanism. The lens and illumination system are typically 90° side-view, and the water-air spray device faces the lens surface. The forceps lifting mechanism is located at the forceps channel opening and can rotate 90 degrees to assist instruments extending from the forceps channel opening in turning 90 degrees.

[0003] However, when the current duodenal endoscope enters the upper digestive tract, it only provides a lateral view, which is 90 degrees to the direction of insertion. It cannot provide a forward view, requiring the operator to have a high degree of proficiency in operating the endoscope.

[0004] Furthermore, the current duodenal endoscope has a lifting device in front of the forceps opening, which prevents the instrument from going straight out. The instrument can only be operated after the lifting device is turned 90 degrees. The instrument operation area is on the side of the endoscope, which cannot achieve bidirectional medical operation from the side and the front.

[0005] Therefore, existing technologies have shortcomings and need to be improved. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a disposable duodenal endoscope to solve the problems mentioned in the background art.

[0007] The technical solution of the present invention is as follows: A disposable duodenal endoscope is provided, the disposable duodenal endoscope includes: a head end, an insertion part and an operating part, the head end is connected to the insertion part, the insertion part is connected to the operating part, the insertion part has an instrument channel extending into the head end, and the instrument passes through the instrument channel.

[0008] The head end includes: a lens illumination assembly, a lifting clamp, a first traction assembly, and a head end base. The lens illumination assembly is mounted on the head end base, and the lifting clamp is movably mounted on the head end base. One end of the first traction assembly extends to the operating part, and the other end is connected to the lifting clamp to drive the lifting clamp to rotate in different directions (clockwise or counterclockwise). In this design, the lifting clamp rotates about a lifting clamp pivot.

[0009] The lifting clamp has an initial state (first state) located on the extension line of the instrument channel, a second state rotated clockwise to move the instrument toward the side view direction, and a third state rotated clockwise to disengage from the extension line of the instrument channel.

[0010] The forceps can rotate to the side and away from the instrument channel extension line. When rotated to the side, it can cause the instrument to bend laterally. When it moves away from the instrument channel extension line, it can create clearance space so that the instrument can be straight out in the forward direction. This allows the instrument to be used for medical operations in both the side and forward directions.

[0011] When the instrument needs to extend from the side of the head end, the first traction assembly pulls the forceps towards the side, placing the forceps in the second state, thereby causing the instrument to bend laterally. When the instrument needs to extend from the front of the head end, the first traction assembly pushes the forceps away from the direction of the instrument channel extension line, creating clearance space so that the instrument extends straight forward, placing the forceps in the third state. Therefore, by operating the first traction assembly, the instrument can be used for medical operations in both lateral and forward directions, greatly facilitating its application.

[0012] The disposable duodenoscope further includes: a head cap mounted on the head end base, the head cap having a lateral window in the lateral viewing direction and a front operating window on the extension line of the instrument channel. The lateral window provides a lateral viewing window for the lens assembly and, when the forceps is in the second state, provides a lateral extension window for the instrument; when the forceps is in the third state, the front operating window provides an extension window for the instrument in the direction of the extension line of the instrument channel. The head cap protects the head end base.

[0013] The lens illumination assembly is movably mounted on the headstock via a lens pivot and can rotate around the lens pivot. The lens illumination assembly has a fourth state facing the side view direction and a fifth state facing the extension line of the instrument channel. The lens illumination assembly is used to acquire images in front of the lens. When it is necessary to acquire images in the side view direction, the lens illumination assembly is in the fourth state; when it is necessary to acquire images in front of the headstock, the lens illumination assembly is in the fifth state.

[0014] The lens illumination assembly is arranged parallel to the instrument channel.

[0015] The end cap also includes a front observation window. When the lens illumination assembly is in the fifth state, the front observation window corresponds to the position of the lens illumination assembly, and the illumination direction of the lens illumination assembly can pass through the front observation window. Therefore, a single endoscope provides both direct and lateral views, and also has instrument channels for both lateral and direct exit. This allows for coordinated operation of all-round observation and multi-directional instrument extension under the same endoscope, significantly increasing the convenience of upper gastrointestinal examination and treatment, and effectively reducing the difficulty of ERCP (endoscopic retrograde cholangiopancreatography).

[0016] The operating unit includes a handle. The first traction assembly includes a first driving device and a first traction rope disposed on the handle. The first driving device includes a handle shaft mounted on the handle, a wheel sleeved on the handle shaft, a handwheel connected to the wheel, a connecting rod movably connected to the wheel, and a slider movably connected to the connecting rod. A slider guide groove is provided inside the handle along the direction of the instrument channel, and the slider is slidably disposed in the slider guide groove. The first traction rope is a rigid metal wire, such as stainless steel wire.

[0017] The slider is connected to the first end of the first pulling rope, and the second end of the first pulling rope is connected to the lifting clamp.

[0018] The handwheel can rotate clockwise and counterclockwise around the handle's pivot, and the first pull rope drives the clamp to either the second or third state. This allows the instrument to extend from the headstock in both lateral and forward directions.

[0019] The head end also includes a second traction assembly, which includes a second drive device and a second traction rope. The second traction rope is a rigid metal wire, such as stainless steel wire.

[0020] The second driving device includes: a motor installed in the handle, a flexible steel wire connected to the output shaft of the motor, a connector connected to one end of the flexible steel wire and a spring sleeved on the connector, and fixing members disposed at both ends of the connector. The length direction of the spring is the same as the direction of the instrument channel, and the two ends of the spring abut against the fixing members respectively.

[0021] The first end of the second pull rope is connected to the connector, and the second end of the second pull rope is connected to the lens illumination assembly.

[0022] The motor can drive the connector and the second pull rope through the flexible steel wire, and drive the lens illumination assembly to the fourth state or the fifth state through the second pull rope; when the lens illumination assembly is in one of the fourth state or the fifth state, the spring is compressed, and when the lens illumination assembly is in the other of the fourth state or the fifth state, the spring is released.

[0023] The first drive device and the second drive device are respectively arranged on opposite sides of the handle.

[0024] The lens illumination assembly includes a housing, a lens, an illumination lamp, a water vapor nozzle, and a secondary water outlet integrated on the housing. The lens, the illumination lamp, and the secondary water outlet are oriented in the same direction, and the working surface of the water vapor nozzle faces the lens.

[0025] The head cap and the head base are detachably connected, and the head cap is made of transparent material.

[0026] By adopting the above solution, the present invention provides a disposable duodenal endoscope, which has the following technical effects: The forceps can rotate to the side and away from the instrument channel extension line. When rotated to the side, it can cause the instrument to bend laterally. When it moves away from the instrument channel extension line, it can create clearance space so that the instrument can be straight out in the forward direction. This allows the instrument to be used for medical operations in both the side and forward directions. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a structure according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the head end structure; Figure 3 This is an exploded view of the head end; Figure 4 An exploded view of the head end from another perspective; Figure 5 This is a schematic diagram of the structure when the instrument extends from the side of the headstock; Figure 6 This is a cross-sectional view of the instrument extending from the side of the headstock. Figure 7 This is a schematic diagram of the structure when the instrument extends from the front end of the headstock; Figure 8 This is a cross-sectional view of the instrument as it extends from the front end of the headstock. Figure 9 This is a schematic diagram of the lens illumination assembly. Figure 10 This is a schematic diagram of the operating unit. Figure 11 A schematic diagram of the structure when the first drive device pulls the first pulling rope; Figure 12 A schematic diagram of the structure when the first driving device releases the first pulling rope; Figure 13 A schematic diagram of the structure when the second drive device pulls the second traction rope; Figure 14 A schematic diagram of the structure when the second pull rope is released for the second drive device. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0029] Please see Figures 1-14This invention provides a disposable duodenoscope, comprising: a tip 10, an insertion part 11, and an operating part 12. The tip 10 is connected to the insertion part 11, and the insertion part 11 is connected to the operating part 12. The insertion part 11 has an instrument channel 14 extending into the tip 10, through which an instrument 13 passes. The tip 10 is located distally, away from the operator, for performing medical procedures. The insertion part 11 is used to guide the tip 10 into the body. The operating part 12 is located proximally, close to the operator, for the medical personnel to perform procedures.

[0030] The head end portion 10 includes: a lens illumination assembly, a lifting clamp 15, a first traction assembly, and a head end base 16. The lens illumination assembly is mounted on the head end base 16, and the lifting clamp 15 is movably mounted on the head end base 16. One end of the first traction assembly extends to the operating part 12, and the other end is connected to the lifting clamp 15 to drive the lifting clamp 15 to rotate in different directions (clockwise or counterclockwise). In this embodiment, the lifting clamp 15 rotates about a lifting clamp pivot 17.

[0031] The lifting clamp 15 has an initial state (first state) located on the extension line of the instrument channel 14, a second state rotated clockwise to move the instrument 13 toward the side view direction, and a third state rotated clockwise to disengage from the extension line of the instrument channel 14.

[0032] In the second state, the forceps 15 bends the instrument 13 towards the lateral view, changing the orientation of the instrument 13, thereby allowing medical operations to be performed on human tissue in the lateral view through the instrument 13. In the third state, it avoids the instrument channel 14, allowing the instrument 13 to extend straight out in the forward view, performing medical operations on the human body in the forward view.

[0033] The forceps 15 can rotate to the lateral direction and to the direction of disengagement from the extension line of the instrument channel 14. When rotating to the lateral direction, it can cause the instrument 13 to bend laterally. When disengaging from the extension line of the instrument channel 14, it can create clearance space so that the instrument 13 can be straight out in the forward direction, thereby enabling the instrument 13 to perform medical operations in both the lateral and forward directions.

[0034] The disposable duodenoscope also includes a head cap 18 mounted on a headstock 16. The head cap 18 has a lateral window 19 in the lateral viewing direction and a front operating window 20 on the extension line of the instrument channel 14. The lateral window 19 provides a lateral viewing window for the lens assembly and, when the forceps 15 is in the second position, provides a lateral viewing window for the instrument 13; when the forceps 15 is in the third position, the front operating window 20 provides a window for the instrument 13 in the direction of the extension line of the instrument channel 14. The head cap 18 is used to protect the headstock 16.

[0035] The lens illumination assembly is movably mounted on the headstock 16 via the lens pivot 21 and can rotate around the lens pivot 21; the lens illumination assembly has a fourth state facing the side view direction and a fifth state facing the extension line of the instrument channel 14.

[0036] In the fourth state, the lens illumination assembly provides lateral imaging illumination, working in conjunction with the forceps lifter 15 in the second state to perform lateral medical procedures. In the fifth state, when a disposable duodenoscope is inserted into the body, the lens illumination assembly provides forward illumination and imaging, offering a direct reference for endoscope insertion. It can also be used in conjunction with the forceps lifter 15 in the third state to perform forward-looking medical procedures.

[0037] The lens illumination assembly is arranged parallel to the instrument channel 14 and the two do not intersect, so as to avoid the lens illumination assembly from blocking the instrument channel 14 when it rotates.

[0038] The cap 18 also includes a front observation window 22. When the lens illumination assembly is in the fifth state, the front observation window 22 corresponds to the position of the lens illumination assembly, and the illumination direction of the lens illumination assembly can be seen through the front observation window 22. Therefore, a single endoscope provides both direct and lateral views, and also has instrument channels 14 for both lateral and direct exit. This allows for comprehensive observation and multi-directional extension of instruments 13 to be completed under the same endoscope, significantly increasing the convenience of upper gastrointestinal examination and treatment, and effectively reducing the difficulty of ERCP (endoscopic retrograde cholangiopancreatography).

[0039] The operating unit 12 includes a handle 23. The first traction assembly includes a first driving device and a first traction rope 24 disposed on the handle 23. The first driving device includes a handle shaft 25 mounted on the handle 23, a wheel 26 sleeved on the handle shaft 25, a handwheel 27 connected to the wheel 26, a connecting rod 28 movably connected to the wheel 26, and a slider 29 movably connected to the connecting rod 28. A slider guide groove 30 is provided in the handle 23 along the direction of the instrument channel 14, and the slider 29 is slidably disposed in the slider guide groove 30.

[0040] The slider 29 is connected to the first end of the first pulling rope 24, and the second end of the first pulling rope 24 is connected to the lifting clamp 15.

[0041] The handwheel 27 can rotate clockwise and counterclockwise around the handle shaft 25, and drive the lifting clamp 15 to the second or third state via the first pull rope 24.

[0042] In one embodiment, the handwheel 27 rotates clockwise, pulling the clamp lifter 15 to the second state. In another embodiment, the handwheel 27 rotates counterclockwise, pushing the clamp lifter 15 to the third state.

[0043] The first pull rope 24 can be a rigid metal wire that can be pushed and pulled, such as stainless steel wire.

[0044] The head end 10 also includes a second traction assembly, which includes a second drive device and a second traction rope 31.

[0045] The second drive device includes: a motor 32 installed in the handle 23, a soft steel wire 33 connected to the output shaft of the motor 32, a connector 34 connected to one end of the soft steel wire 33, a spring 35 sleeved on the connector 34, and fixing members 36 provided at both ends of the connector 34. The length direction of the spring 35 is the same as the direction of the instrument channel 14, and the two ends of the spring 35 abut against the fixing members 36 respectively.

[0046] The first end of the second pull rope 31 is connected to the connector 34, and the second end of the second pull rope 31 is connected to the lens illumination assembly.

[0047] The motor 32 can drive the connector 34 and the second pull rope 31 through the soft steel wire 33, and drive the lens illumination assembly to the fourth or fifth state through the second pull rope 31; when the lens illumination assembly is in one of the fourth or fifth states, the spring 35 is compressed, and when the lens illumination assembly is in the other of the fourth or fifth states, the spring 35 is released.

[0048] The second pull rope 31 can be a rigid metal wire that can be pushed and pulled, such as stainless steel wire.

[0049] In one embodiment, the spring 35 is compressed when the lens illumination assembly is in the fourth state. The spring 35 is released when the lens illumination assembly is in the fifth state.

[0050] The motor 32 can be controlled by the button 42 on the handle 23. When the button controls the motor 32 to rotate clockwise, the soft steel wire 33 tightens around the shaft, thereby pulling the second traction rope 31 and compressing the spring 35 at the same time. When the button controls the motor 32 to rotate counterclockwise, the spring 35 is released, and the spring 35 pushes the second traction rope 31 back.

[0051] The first drive device and the second drive device are respectively arranged on opposite sides of the handle 23, making full use of the space inside the handle 23, reducing space occupation, and avoiding interference between the circuits of the two devices.

[0052] The lens illumination assembly includes a housing 37, a lens 38, an illumination lamp 39, a water vapor nozzle 40, and a secondary water outlet 41 integrated on the housing 37. The lens 38, the illumination lamp 39, and the secondary water outlet 41 have the same orientation, and the working surface of the water vapor nozzle 40 faces the lens 38.

[0053] The head cap 18 and the head base 16 are detachable. The head cap 18 is made of transparent material, such as high light transmittance plastic material (e.g., polyethylene, polypropylene, polycarbonate, plexiglass, etc.), which facilitates the transmission of light from the camera lighting components.

[0054] In summary, the present invention provides a disposable duodenal endoscope, which has the following technical effects: The forceps can rotate to the side and away from the instrument channel extension line. When rotated to the side, it can cause the instrument to bend laterally. When it moves away from the instrument channel extension line, it can create clearance space so that the instrument can be straight out in the forward direction. This allows the instrument to be used for medical operations in both the side and forward directions.

[0055] A single endoscope provides both direct and lateral views, and also has instrument channels for both lateral and direct exit. This allows for comprehensive observation and coordinated operation of instruments extending in multiple directions under the same endoscope, significantly increasing the convenience of upper gastrointestinal examinations and treatments, and effectively reducing the difficulty of ERCP (endoscopic retrograde cholangiopancreatography).

[0056] Compared with existing technologies, the lens assembly is driven by a motor to rotate, enabling axial or lateral medical operations without obstructing the instrument channel during rotation; the forceps can rotate clockwise and counterclockwise, enabling the instrument to bend and turn and creating clearance space for straight-out operation; during straight-out operation, the camera and lighting module provides illumination for imaging and water spraying.

[0057] An integrated lens assembly (including lens, illumination lamp, water / air nozzle, and auxiliary water outlet) is installed, capable of 90-degree electric rotation without obstructing the instrument channel. The forceps can rotate clockwise and counterclockwise, allowing for instrument bending and deflection, and creating clearance for straight instrument extension. The head cover is transparent, with openings corresponding to the camera, illumination, and water spray modules and the instrument positions, facilitating the use of the front-end illumination, camera, and water spray functions and instrument extension. With this setup, a single lens module provides a direct camera illumination field of view when the duodenoscope is inserted into the body, enabling medical procedures in both vertical and lateral directions.

[0058] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A disposable duodenal endoscope, characterized in that, The disposable duodenoscope includes: a tip, an insertion part, and an operating part. The tip is connected to the insertion part, and the insertion part is connected to the operating part. The insertion part has an instrument channel extending into the tip, through which the instrument passes. The head end includes: a lens illumination assembly, a lifting clamp, a first traction assembly, and a head end base. The lens illumination assembly is mounted on the head end base, and the lifting clamp is movably mounted on the head end base. One end of the first traction assembly extends to the operating part, and the other end is connected to the lifting clamp to drive the lifting clamp to rotate in different clockwise directions. The lifting clamp has an initial state located on the extension line of the instrument channel, a second state rotated clockwise to move the instrument toward the side view direction, and a third state rotated clockwise to disengage from the extension line of the instrument channel.

2. The disposable duodenoscope according to claim 1, characterized in that, Also includes: A head cap mounted on the head end seat has a lateral window in the lateral viewing direction and a front operating window on the extension line of the instrument channel. The lateral window provides a lateral viewing window for the lens assembly and, when the clamp lifter is in the second state, provides a lateral extension window for the instrument. When the clamp lifter is in the third state, the front operating window provides an extension window for the instrument in the direction of the extension line of the instrument channel.

3. The disposable duodenoscope according to claim 1 or 2, characterized in that, The lens illumination assembly is movably mounted on the headstock via a lens pivot and is capable of rotating around the lens pivot; the lens illumination assembly has a fourth state facing the side viewing direction and a fifth state facing the extension line of the instrument channel.

4. The disposable duodenoscope according to claim 3, characterized in that, The lens illumination assembly is arranged parallel to the instrument channel.

5. The disposable duodenoscope according to claim 3, characterized in that, The head cap also includes a front observation window. When the lens illumination component is in the fifth state, the front observation window corresponds to the position of the lens illumination component, and the illumination direction of the lens illumination component can be transmitted through the front observation window.

6. The disposable duodenoscope according to claim 3, characterized in that, The operating part includes a handle, and the first traction assembly includes a first driving device and a first traction rope disposed on the handle. The first driving device includes a handle shaft mounted on the handle, a wheel sleeved on the handle shaft, a handwheel connected to the wheel, a connecting rod movably connected to the wheel, and a slider movably connected to the connecting rod. A slider guide groove is provided inside the handle along the direction of the instrument channel, and the slider is slidably disposed in the slider guide groove. The slider is connected to the first end of the first pulling rope, and the second end of the first pulling rope is connected to the lifting clamp. The handwheel can rotate clockwise and counterclockwise around the handle pivot, and the first pull rope can be used to move the lifting clamp to the second state or the third state.

7. The disposable duodenoscope according to claim 6, characterized in that, The head end also includes a second traction assembly, which includes a second drive device and a second traction rope; The second driving device includes: a motor installed in the handle, a flexible steel wire connected to the output shaft of the motor, a connector connected to one end of the flexible steel wire and a spring sleeved on the connector, and fixing members disposed at both ends of the connector. The length direction of the spring is the same as the direction of the instrument channel, and the two ends of the spring abut against the fixing members respectively. The first end of the second pull rope is connected to the connector, and the second end of the second pull rope is connected to the lens illumination assembly; The motor can drive the connector and the second pull rope through the flexible steel wire, and drive the lens illumination assembly to the fourth state or the fifth state through the second pull rope; when the lens illumination assembly is in one of the fourth state or the fifth state, the spring is compressed, and when the lens illumination assembly is in the other of the fourth state or the fifth state, the spring is released.

8. The disposable duodenoscope according to claim 7, characterized in that, The first drive device and the second drive device are respectively arranged on opposite sides of the handle.

9. The disposable duodenoscope according to claim 1, characterized in that, The lens illumination assembly includes a housing, a lens, an illumination lamp, a water vapor nozzle, and a secondary water outlet integrated on the housing. The lens, the illumination lamp, and the secondary water outlet are oriented in the same direction, and the working surface of the water vapor nozzle faces the lens.

10. The disposable duodenoscope according to claim 2, characterized in that, The head cap and the head base are detachably connected, and the head cap is made of transparent material.

Images