Multi-lumen endoscope

Abstract

The utility model provides a kind of multicavity endoscope, including control handle and insertion part, the control handle is connected in the proximal end of the insertion part;Liquid inlet and negative pressure interface are equipped on the control handle, liquid inlet channel and back liquid passage are equipped in the insertion part, the liquid inlet of the liquid inlet channel is communicated with the liquid inlet, and the liquid outlet of the liquid inlet channel is arranged in the distal end face of the insertion part;The liquid outlet of the back liquid passage is communicated with the negative pressure interface, and the back liquid inlet of the back liquid passage is arranged on the side wall of the insertion part away from the distal end face of the insertion part.The utility model arranges the back liquid inlet of back liquid passage on the side wall away from the distal end face of insertion part, therefore, back liquid inlet avoids stone area, and then avoid that stone enters back liquid passage from back liquid inlet under the action of negative pressure suction, prevent back liquid passage from being blocked, and realize smooth back liquid.

Description

Technical Field

[0001] This utility model relates to the field of endoscopy technology, and in particular to a multi-cavity endoscope. Background Technology

[0002] Endoscopes are widely used in surgery, suitable for insertion into the human body for various auxiliary treatments. The flexible ureteropelvicoscope is currently the primary instrument for treating diseases of the ureter and renal pelvis. The treatment process requires traversing the urethra, bladder, narrow ureter, and renal pelvis for examination, diagnosis, or treatment. Due to anatomical structure, the path of the ureteroscope to its intended location is tortuous and the passageway is narrow. Therefore, the smaller the maximum outer diameter of the ureteropelvicoscope (usually below 3.3 mm), the less damage to the body and the fewer complications.

[0003] Currently, the incidence of kidney stones is increasing year by year. Ureteroscopic lithotripsy using holmium laser and other methods is the main treatment method. This surgery has the advantages of simple operation, minimal damage, fast postoperative recovery and high safety. Therefore, more and more urologists tend to use ureteroscopic lithotripsy to achieve the purpose of treatment.

[0004] However, during ureteroscopic lithotripsy, the laser lithotripsy process generates a large number of fine particles, and factors such as tissue bleeding can lead to unclear visualization within the renal pelvis. Doctors typically use large amounts of saline solution for irrigation to ensure a clear view, remove the lithotripsy fragments, and remove the heat generated by the high-frequency infusion. Continuous irrigation with large amounts of fluid can easily cause a significant increase in intrarenal pelvic pressure, leading to a series of surgical complications, particularly fever, severe renal pain, and postoperative ureteral stricture. Therefore, how to reduce intrarenal pelvic pressure has become a pressing technical problem to be solved in this field.

[0005] Because endoscopes have closely spaced lighting devices, camera devices, and instrument channels, if a return fluid channel is added to the tip of the insertion section, the large number of particles of different sizes after lithotripsy will cause blockage of the return fluid channel due to the negative pressure suction, making it difficult to return fluid. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a multi-cavity endoscope, including a control handle and an insertion part. The control handle is connected to the proximal end of the insertion part. The control handle is provided with a liquid inlet and a negative pressure interface. The insertion part is provided with a liquid inlet channel and a liquid return channel. The liquid inlet of the liquid inlet channel is connected to the liquid inlet interface, and the liquid outlet of the liquid inlet channel is located on the distal end face of the insertion part. The liquid outlet of the liquid return channel is connected to the negative pressure interface, and the liquid return outlet of the liquid return channel is located on the side wall of the insertion part away from the distal end face of the insertion part.

[0007] Optionally, the insertion portion includes, from far to near, a head end, a curved portion, a docking portion, and a main body portion, and the return port is located on the distal side wall of the main body portion or on the side wall of the docking portion.

[0008] Optionally, the return liquid channel includes a main return liquid channel and at least one side return liquid channel. The main return liquid channel is disposed within the main body along the axial direction of the main body, and the proximal end of the main return liquid channel penetrates the proximal end face of the main body. The side return liquid channel is disposed on the side of the main body, and one end of the side return liquid channel communicates with the distal end of the main return liquid channel. The other end of the side return liquid channel is the return liquid port, which is opened on the distal side wall of the main body.

[0009] Optionally, the return liquid channel includes a main return liquid channel and at least one side return liquid channel. The main return liquid channel includes a first main return liquid channel and a second main return liquid channel from far to near. The first main return liquid channel is disposed within the docking portion along the axial direction of the docking portion. The second main return liquid channel is disposed within the main body portion along the axial direction of the main body portion and penetrates the distal end face and proximal end face of the main body portion. The side return liquid channel is disposed on the side of the docking portion. The proximal end of the first main return liquid channel communicates with the distal end of the second main return liquid channel. The distal end of the first main return liquid channel communicates with one end of the side return liquid channel. The other end of the side return liquid channel is the return liquid port, which is opened on the side wall of the docking portion.

[0010] Optionally, the control handle is provided with a bending interface for mounting a bending drive mechanism, and the bending part can be bent under the drive of the bending drive mechanism.

[0011] Optionally, the bending section is a snake-bone tube, and the snake-bone tube is provided with a plurality of linear transmission components. The distal end of the linear transmission component is fixedly connected to the distal end of the snake-bone tube, and the proximal end of the linear transmission component passes through the snake-bone tube, the docking section, and the main body section in sequence and is connected to the bending drive mechanism.

[0012] Optionally, the insertion part is further provided with an instrument channel, which shares a channel with the liquid inlet channel.

[0013] Optionally, the control handle is also provided with an endoscope plug, and the head end is provided with an illumination module and a camera module. The illumination module and the camera module are both electrically connected to the endoscope plug via cables.

[0014] Compared with the prior art, the technical solution of this utility model embodiment has the following beneficial effects:

[0015] This invention places the return port of the return channel on the side wall away from the distal end face of the insertion part. Therefore, the return port avoids the gravel area, thereby preventing gravel from entering the return channel from the return port under the action of negative pressure, preventing the return channel from being blocked, and realizing smooth return of liquid.

[0016] Furthermore, this invention provides a multi-cavity endoscope that, without altering the external endoscope, avoids the complex structure at the head end (which includes a camera module, lighting module, instrument channel, etc.) and adds a return fluid channel on the side wall to draw out the physiological saline infused into the renal pelvis under negative pressure in real time, thereby reducing the pressure and heat within the renal pelvis.

[0017] Furthermore, the multi-cavity endoscope provided by this utility model can be used not only as a ureteroscope and pyeloscope, but also as a cystoscope, gastroscope, colonoscope, bronchoscope, cholangioscope, or hysteroscope. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the internal structure of a multi-cavity endoscope provided in an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of the external structure of a multi-cavity endoscope provided in an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the insertion part provided in an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the head end of the insertion part provided in an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of the structure of the bent portion of the insertion part provided in an embodiment of this utility model;

[0024] Figure 6 A schematic diagram of the docking portion of the insertion part provided in an embodiment of this utility model. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus. The terms "above" and "over," and any variations thereof, are intended to describe positional relationships and do not imply direct contact between the described objects.

[0027] As described in the background section, during ureteroscopic lithotripsy, the laser lithotripsy process generates a large number of fine particles, and factors such as tissue bleeding may lead to unclear visualization within the renal pelvis. Doctors typically use large amounts of saline solution for irrigation to ensure a clear view, remove the lithotripsy fragments, and remove the heat generated by the high-frequency infusion. However, continuous irrigation with large amounts of fluid can cause a significant increase in intrarenal pelvic pressure, leading to a series of surgical complications, particularly fever, severe renal pain, and postoperative ureteral stricture. Therefore, reducing intrarenal pelvic pressure has become a pressing technical problem to be solved in this field.

[0028] Because endoscopes have closely spaced lighting, camera, and instrument channels, it's difficult to add a suction channel at the insertion tip without increasing its size. Adding a return channel at the insertion tip would cause blockage due to the negative pressure suction from the numerous particles of varying sizes after lithotripsy, making return difficult.

[0029] Please refer to Figure 1 In order to solve the above-mentioned technical problems, the present invention provides a multi-cavity endoscope, including a control handle 1 and an insertion part 2, wherein the control handle 1 is connected to the proximal end of the insertion part 2.

[0030] The control handle 1 is provided with a liquid inlet 101 and a negative pressure interface 102. The insertion part 2 is provided with a liquid inlet channel 201 and a liquid return channel 206. The liquid inlet of the liquid inlet channel 201 is connected to the liquid inlet 101, and the liquid outlet of the liquid inlet channel 201 is opened on the far end face of the insertion part 2.

[0031] The drain port of the return channel 206 is connected to the negative pressure interface 102, and the return port 207 of the return channel 206 is opened on the side wall of the insertion part 2 away from the distal end face of the insertion part 2.

[0032] The inlet port 101 is used to connect the infusion device, and the negative pressure port 102 is used to connect the negative pressure device. During endoscopic lithotripsy, the laser lithotripsy process generates a large number of fine particles, and factors such as tissue bleeding may lead to unclear visualization within the renal pelvis. Therefore, the doctor connects the infusion device to the inlet port 101, and injects fluids such as physiological saline into the renal pelvis through the infusion channel to ensure a clear view, remove the fragments, and remove the heat generated by the high frequency. To avoid a significant increase in intrarenal pelvic pressure caused by continuous injection of large amounts of fluid, which could lead to a series of surgical complications, especially fever, severe renal pain, and postoperative ureteral stricture, the doctor connects the negative pressure device to the negative pressure port 102. The negative pressure device is used to draw fluid from the renal pelvis through the return channel 206 in real time to reduce intrarenal pelvic pressure.

[0033] In this invention, the return port 207 of the return channel 206 is located on the side wall away from the distal end face of the insertion part 2. Therefore, the return port 207 avoids the gravel area, thereby preventing gravel from entering the return channel 206 from the return port 207 under the action of negative pressure suction, preventing the return channel 206 from being blocked, and realizing smooth return of liquid.

[0034] Please refer to Figure 2 and Figure 3 Furthermore, the insertion part 2 includes, from distal to proximal, a tip 202, a curved part 203, a docking part 204, and a main body 205, with the proximal end of the main body 205 connected to the control handle 1. Since the endoscope tip 202 is followed by a flexible, snake-like tube-like curved part 203, the structure of the curved part 203 is complex, making it difficult to increase the return fluid channel 206 without increasing the outer diameter. In order not to increase the outer diameter of the insertion part 2, in one embodiment of this invention, the return fluid channel 206 is not provided in the curved part 203 or the tip 202, but is instead located behind the curved part 203, and the return fluid port 207 is opened on the distal side wall of the main body 205 or the side wall of the docking part 204. Since adding the return fluid channel 206 to the main body 205 and the docking part 204 does not increase their outer diameter, this embodiment adds the return fluid channel 206 without changing the outer diameter of the insertion part 2.

[0035] Since both the docking portion 204 and the main body portion 205 are located behind the curved portion 203, the return channel 206 can be provided only in the main body portion 205, and the return port 207 can be provided on the side wall of the main body portion 205; alternatively, the return channel 206 can be provided in both the main body portion 205 and the docking portion 204, and the return port 207 can be provided on the side wall of the docking portion 204. The following will describe these two implementations in detail.

[0036] In one embodiment, the return channel 206 includes a main return channel and at least one side return channel. The main return channel is disposed axially within the main body 205, and its proximal end penetrates the proximal end face of the main body 205. The distal end of the main return channel may penetrate the distal end face of the main body 205 or may not penetrate it, but the distal end of the main return channel does not extend into the docking portion 204. The side return channel is disposed on the side of the main body 205, and one end of the side return channel communicates with the distal end of the main return channel. The other end of the side return channel is a return port, which is located on the distal side wall of the main body 205.

[0037] In this embodiment, the side return channels and return ports 207 correspond one-to-one. This embodiment does not limit the number of side return channels; there can be one or more side return channels, which are distributed at intervals along the circumference of the main body 205. Correspondingly, there is also no limit to the number of return ports 207; there can be one or more return ports 207, which are distributed at intervals along the circumference of the sidewall of the main body 205.

[0038] In another embodiment, the return channel 206 includes a main return channel and at least one side return channel. The main return channel includes a first main return channel and a second main return channel from far to near. The first main return channel is disposed within the docking portion 204 along the axial direction of the docking portion 204. The proximal end of the first main return channel penetrates the proximal end face of the docking portion 204, and the distal end of the first main return channel may or may not penetrate the distal end face of the docking portion 204, but the distal end of the first main return channel cannot extend into the bend 203. The second main return channel is disposed within the main body portion 205 along the axial direction of the main body portion 205 and penetrates both the distal and proximal end faces of the main body portion 205. The side return channel is disposed on the side of the docking part 204. The proximal end of the first main return channel is connected to the distal end of the second main return channel. The distal end of the first main return channel is connected to one end of the side return channel. The other end of the side return channel is the return port 207, which is opened on the side wall of the docking part 204.

[0039] In this embodiment, the side return channels and return ports 207 correspond one-to-one. This embodiment does not limit the number of side return channels; there can be one or more side return channels, which are distributed at intervals along the circumference of the docking portion 204. Correspondingly, there is also no limit to the number of return ports 207; there can be one or more return ports 207, which are distributed at intervals along the circumference of the sidewall of the docking portion 204.

[0040] Furthermore, the bending portion 203 is controllable. Specifically, the control handle 1 is provided with a bending control interface 103 for mounting a bending drive mechanism, and the bending portion 203 can be bent under the drive of the bending drive mechanism.

[0041] This embodiment does not limit the specific structure of the bending section 203. For example, the bending section 203 can be a snake-bone tube, with several linear transmission components inside, such as steel wire ropes or other linear transmission components. The bending drive controls the bending of the snake-bone tube mainly by pulling the linear transmission components. This embodiment does not limit the number of linear transmission components that can be pulled. For example, with four linear transmission components, pulling all four linear transmission components can cause the bending section 203 to bend in four directions (up, down, left, and right). If two linear transmission components are used, pulling both linear transmission components can cause the bending section 203 to bend in two directions.

[0042] The distal end of the linear transmission member is fixedly connected to the distal end of the snake-bone tube, and the proximal end of the linear transmission member passes through the snake-bone tube, the docking part 204, and the main body part 205 in sequence and is connected to the bending drive mechanism.

[0043] Furthermore, the insertion part 2 is also provided with an instrument channel. In order not to increase the outer diameter of the insertion part 2, the instrument channel and the liquid inlet channel 201 share a single channel.

[0044] Please refer to Figures 4 to 6 The liquid inlet channel 201 includes a head end liquid inlet channel portion 20101, a flexible liquid inlet channel portion 20102, a docking liquid inlet channel portion 20103, and a main liquid inlet channel portion. The head end liquid inlet channel portion 20101 is disposed within the head end 202, the flexible liquid inlet channel portion 20102 is disposed within the flexible portion 203, the docking liquid inlet channel portion 20103 is disposed within the docking portion 204, and the main liquid inlet channel portion is disposed within the main body portion 205. The specific structure of each part of the insertion portion 2 will be described in detail below.

[0045] Please refer to Figure 4 The head end 202 includes an outer tube and an inner tube, with the inner tube disposed inside the outer tube, forming a head end liquid inlet channel 20101. A gap exists between the inner and outer tubes for housing the lighting module 208 and the camera module 209. The distal end of the gap between the inner and outer tubes is sealed by a transparent cover plate. The purpose of this cover plate is to separate the lighting module 208 and the camera module 209 from human tissue without affecting the lighting and imaging effects.

[0046] The control handle 1 is also equipped with an endoscope plug, and the lighting module 208 and the camera module 209 are both electrically connected to the endoscope plug via cables.

[0047] Please refer to Figure 5 The curved section 203 includes a snake-bone tube, within which are disposed a flexible liquid inlet channel 20102, a first cable channel 20301, and a first linear transmission member channel 20302. The distal end of the flexible liquid inlet channel 20102 communicates with the head end liquid inlet channel 20101. The distal end of the first cable channel 20301 communicates with the gap between the inner and outer tubes of the head end 202. The first cable channel 20301 is used to accommodate a cable, and the first linear transmission member channel 20302 is used to accommodate a linear transmission member.

[0048] Please refer to Figure 6The docking part 204 includes a solid tube, in which a docking liquid inlet channel 20103, a second cable channel 20401, a second linear transmission component channel 20402, a first main return liquid channel, and at least one side return liquid channel are provided. The distal end of the docking liquid inlet channel 20103 is connected to the proximal end of the flexible liquid inlet channel 20102. The distal end of the second cable channel 20401 is connected to the proximal end of the first cable channel 20301. The distal end of the second linear transmission component channel 20402 is connected to the proximal end of the first linear transmission component channel 20302. The second cable channel 20401 is used to accommodate cables, and the second linear transmission component channel 20402 is used to accommodate linear transmission components. The first main return fluid channel is arranged axially within the docking portion 204. The proximal end of the first main return fluid channel penetrates the proximal end face of the docking portion 204. The distal end of the first main return fluid channel may or may not penetrate the distal end face of the docking portion 204, but the distal end of the first main return fluid channel cannot extend into the bend 203. The side return fluid channel is arranged on the side of the docking portion 204. One end of the side return fluid channel communicates with the distal end of the first main return fluid channel, and the other end of the side return fluid channel is the return fluid port 207, which is located on the side wall of the docking portion 204.

[0049] The main body 205 contains a main liquid inlet channel, a third cable channel, a third linear transmission component channel, and a second main liquid return channel. The distal end of the main liquid inlet channel is connected to the proximal end of the docking liquid inlet channel 20103, and the proximal end of the main liquid inlet channel is connected to the liquid inlet interface 101 of the control handle 1. The distal end of the third cable channel is connected to the proximal end of the second cable channel 20401, and the proximal end of the third cable channel is connected to the cable interface 104. The cable interface 104 is located on the control handle 1 and is used to connect to the endoscope plug. The cables connected to the lighting module 208 and the camera module 209 pass through the first cable channel 20301, the second cable channel 20401, and the third cable channel in sequence and are electrically connected to the endoscope plug.

[0050] The lighting module 208 is an LED component or an optical fiber component. If the lighting module 208 is an optical fiber component, the control handle 1 is also provided with an optical fiber interface 105 for connecting the light source machine.

[0051] The distal end of the third linear transmission channel is connected to the proximal end of the second linear transmission channel 20402. The proximal end of the third linear transmission channel is connected to the bending control interface 103 of the control handle 1. The distal end of the linear transmission is fixedly connected to the distal end of the snake tube. The proximal end of the linear transmission passes through the first linear transmission channel 20302, the second linear transmission channel 20402, the third linear transmission channel, and the bending control interface 103 in sequence and is connected to the bending drive mechanism.

[0052] The second main return liquid channel is arranged axially within the main body 205 and extends through the distal end face and proximal end face of the main body 205. The distal end of the second main return liquid channel is connected to the proximal end of the first main return liquid channel, and the proximal end of the second main return liquid channel is connected to the liquid inlet 101 of the control handle 1.

[0053] The multi-cavity endoscope provided by this utility model can be used not only as a ureteroscope and pyeloscope, but also as a cystoscope, gastroscope, colonoscope, bronchoscope, cholangioscope or hysteroscope.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multi-cavity endoscope, characterized in that, The device includes a control handle and an insertion part. The control handle is connected to the proximal end of the insertion part. The control handle is provided with a liquid inlet and a negative pressure interface. The insertion part is provided with a liquid inlet channel and a liquid return channel. The liquid inlet of the liquid inlet channel is connected to the liquid inlet interface, and the liquid outlet of the liquid inlet channel is located on the distal end face of the insertion part. The liquid outlet of the liquid return channel is connected to the negative pressure interface, and the liquid return outlet of the liquid return channel is located on the side wall of the insertion part away from the distal end face of the insertion part.

2. The multi-cavity endoscope according to claim 1, characterized in that, The insertion portion includes, from far to near, a head end, a curved portion, a docking portion, and a main body portion, and the return port is located on the distal side wall of the main body portion or on the side wall of the docking portion.

3. The multi-cavity endoscope according to claim 2, characterized in that, The return fluid channel includes a main return fluid channel and at least one side return fluid channel. The main return fluid channel is arranged axially within the main body and its proximal end penetrates the proximal end face of the main body. The side return fluid channel is arranged on the side of the main body and one end of the side return fluid channel communicates with the distal end of the main return fluid channel. The other end of the side return fluid channel is the return fluid port, which is located on the distal side wall of the main body.

4. The multi-cavity endoscope according to claim 2, characterized in that, The return liquid channel includes a main return liquid channel and at least one side return liquid channel. The main return liquid channel includes a first main return liquid channel and a second main return liquid channel from far to near. The first main return liquid channel is arranged in the docking part along the axial direction of the docking part. The second main return fluid channel is disposed within the main body along the axial direction of the main body and penetrates the distal end face and proximal end face of the main body; the side return fluid channel is disposed on the side of the docking part, the proximal end of the first main return fluid channel is connected to the distal end of the second main return fluid channel, the distal end of the first main return fluid channel is connected to one end of the side return fluid channel, and the other end of the side return fluid channel is the return fluid port, which is opened on the side wall of the docking part.

5. The multi-cavity endoscope according to claim 2, characterized in that, The control handle is provided with a bending interface for mounting a bending drive mechanism, and the bending part can be bent under the drive of the bending drive mechanism.

6. The multi-cavity endoscope according to claim 5, characterized in that, The bending section is a snake-bone tube, and a number of linear transmission components are provided inside the snake-bone tube. The distal end of the linear transmission component is fixedly connected to the distal end of the snake-bone tube, and the proximal end of the linear transmission component passes through the snake-bone tube, the docking section, and the main body section in sequence and is connected to the bending drive mechanism.

7. The multi-cavity endoscope according to claim 1, characterized in that, The insertion section is also provided with an instrument channel, which shares a channel with the liquid inlet channel.

8. The multi-cavity endoscope according to claim 2, characterized in that, The control handle is also equipped with an endoscope plug, and the head end is equipped with an illumination module and a camera module. The illumination module and the camera module are both electrically connected to the endoscope plug via cables.

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