Ureteral endoscope and pyelometric control system

Abstract

The application discloses a ureteral endoscope for a renal pelvis pressure control system, comprising: an endoscope catheter arranged in a guide sheath of the renal pelvis pressure control system; a perfusion channel is arranged on the endoscope catheter, the perfusion channel is in communication with an interface of a perfusion device, and a perfusion mode is executed in a cavity to perfuse water flow into the cavity to expand a space in the cavity; an attraction channel is formed between the endoscope catheter and a sheath tube of the guide sheath, and the attraction channel is in communication with an interface of an attraction device; one or more pressure measuring holes are arranged on the endoscope catheter, and the pressure measuring holes are arranged at different positions; the pressure of water flow impact is stabilized through the pressure measuring holes at different positions; and the pressure value in the cavity is monitored in real time in different modes. The pressure of water flow impact is stabilized through the pressure measuring holes at different positions, the local pressure measured under the impact of reflected water flow is not inaccurate, the influence of the reflected water flow on the pressure sensor is reduced, the pressure value in the cavity is monitored in real time, and the pressure measurement accuracy is provided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical equipment, in particular to a ureter endoscope and a renal pelvis pressure control system. BACKGROUND

[0002] The ureteroscope is inserted from the urethral orifice, through the patient's urethra, bladder, and then into the ureter for examination and treatment. The ureteroscope is a device composed of a light source, a camera and various working accessories, which is used for examination and treatment of diseases related to the ureter. For the stones in the ureter, the traditional examination and treatment method is mainly surgery, that is, the abdominal cavity is entered, and then the ureter is examined and treated. As known, the ureter is a pipeline system that communicates with the outside through the bladder and urethra, which provides a natural channel for us to examine and treat the ureter system. The ureteroscope is a medical device used in urology treatment. It is used for the diagnosis and treatment of ureter diseases, greatly improving the diagnosis and treatment level of ureter diseases, shortening the hospitalization time of patients, reducing the treatment cost, and achieving satisfactory clinical results.

[0003] The utility model patent with publication number CN213129745U provides a ureter endoscope guide sheath, which comprises a guide sheath main channel, a renal pelvis pressure measuring pipeline and a ureter pressure measuring pipeline. The guide sheath main channel has a suction port connected to a negative pressure suction system. The front end of the renal pelvis pressure measuring pipeline has a renal pelvis pressure measuring hole extending to a position corresponding to the renal pelvis. The front end of the ureter pressure measuring pipeline has a ureter pressure measuring hole extending to a position corresponding to the ureter. The rear end is branched into a water pump channel and a pressure sensor channel. The water pump channel is connected to the irrigation system for irrigating water into the renal pelvis through the renal pelvis pressure measuring hole. The pressure sensor channel is connected to the renal pelvis pressure sensor for monitoring the intrarenal pressure through the renal pelvis pressure measuring hole. The front end of the ureter pressure measuring pipeline has a ureter pressure measuring hole extending to a position corresponding to the ureter. The rear end of the ureter pressure measuring pipeline is connected to the ureter pressure sensor for monitoring the intrarenal pressure through the ureter pressure measuring hole. Although it provides functions such as renal pelvis pressure measurement and ureter pressure measurement, the sensor needs to be attached to the channel separately, resulting in a complex structure of the guide sheath, which is easy to damage the organs, and the sensor is in an external connection mode, which may cause inaccurate pressure measurement.

[0004] The organ cavity entered in use is soft, and in the absence of water, the cavity is basically closed, and by perfusing water flow, the cavity can be expanded to form a surgical space. In the static water-filled cavity, the sensor in the pipeline can complete the accurate pressure measurement task as long as there is a pressure measuring hole. However, in a water flow cavity, the pressures at different points in the cavity are quite different. In particular, the place where the water flows out, under the action of the water flow, the pressure is the largest. When the water flow hits the cavity wall and reflects back, the impact of the reflected water flow will be generated, and the pressure measured at this time will be obviously larger than the pressure at other places in the cavity, forming a local pressure under the impact of the water flow, resulting in inaccurate pressure measurement accuracy.

[0005] In summary, the prior art has the defect that the water flow easily affects the internal pressure measurement accuracy under the action of the cavity. SUMMARY

[0006] The purpose of the present application is to provide a ureter endoscope and a renal pelvis internal pressure control system, which stabilizes the pressure of water flow impact through pressure measuring holes in different directions, avoids inaccurate local pressure measurement under the impact of reflected water flow, reduces the influence of reflected water flow on the pressure sensor through pressure relief of pressure measuring holes in different directions, and monitors the pressure value in the cavity in real time in different modes to complete the accurate pressure measurement task and provide pressure measurement accuracy. It is suitable for percutaneous nephrolithotomy surgery, and can also be widely used in ureteroscopy surgery and other surgeries requiring perfusion.

[0007] The present application provides a ureter endoscope for a renal pelvis internal pressure control system, comprising:

[0008] An endoscope catheter is arranged in the guide sheath of the renal pelvis internal pressure control system;

[0009] The endoscope catheter is provided with a perfusion channel, which is in communication with the interface of a perfusion device, and executes a perfusion mode to perfuse water flow into the cavity to expand the space in the cavity;

[0010] The endoscope catheter and the sheath tube of the guide sheath form an aspiration channel, which is in communication with the interface of an aspiration device, and executes an aspiration mode to aspirate and discharge the crushed stones under the negative pressure aspiration;

[0011] The endoscope catheter is provided with one or more pressure measuring holes, and the pressure measuring holes are arranged in different directions, so as to stabilize the pressure of water flow impact through the pressure measuring holes in different directions, and monitor the pressure value in the cavity in real time in different modes.

[0012] As preferably, a pressure measuring channel is further included, which extends along the length direction of the endoscope catheter and penetrates through the endoscope catheter, the pressure measuring hole is connected with the pressure sensor at the side close to the pressure measuring channel, and the pressure measuring hole is communicated with the intracavity medium at the side away from the pressure measuring channel.

[0013] As preferably, the pressure measuring channel is arranged close to the distal end of the endoscope catheter and is connected with the endoscope handle circuit at the distal end of the endoscope catheter.

[0014] As preferably, an independent optical fiber is arranged in the perfusion channel, the optical fiber is arranged integrally with the perfusion channel, and the lithotripsy mode is executed in the intracavity to make the optical fiber close to the kidney stones in the intracavity and perform laser powderization.

[0015] As preferably, the pressure measuring hole is arranged on the distal end face of the endoscope catheter.

[0016] As preferably, the pressure measuring hole is arranged on the outer surface of the distal end of the endoscope catheter.

[0017] As preferably, the pressure measuring hole is arranged on the distal end face of the endoscope catheter and the outer surface of the distal end of the endoscope catheter, the pressure measuring hole in the same direction is impacted under the action of water flow to obtain a local pressure value, and the pressure measuring hole in the other direction is depressurized when the reflection flow impact is generated by the water flow impacting the cavity wall to obtain a true pressure value.

[0018] As preferably, the distal end face of the endoscope catheter is provided with an imaging assembly and a light source assembly, which are used for providing a clear vision under the illumination light source to collect and monitor the intracavity environment.

[0019] The application further provides a renal pelvis pressure control system, which comprises a guide sheath, a perfusion device, a suction device and the ureteral endoscope.

[0020] As preferably, the endoscope catheter forms an endoscope channel when moving in the sheath tube of the guide sheath, and can execute and switch the endoscope mode, the stone clearing mode and the lithotripsy mode in the intracavity.

[0021] Compared with the prior art, the application has the following advantages:

[0022] The ureteral endoscope provided by the application stabilizes the pressure of water flow impact through the pressure measuring holes in different directions, avoids the inaccuracy of the local pressure measured under the reflection impact of water flow, reduces the influence of the reflection water flow on the pressure sensor through the pressure relief of the pressure measuring holes in different directions, and realizes the real-time monitoring of the intracavity pressure value in different modes to complete the accurate pressure measurement task and provide the pressure measurement precision.

[0023] The application adopts different orientation pressure measuring holes to reduce the influence of reflected flow and measure the correct pressure value in the cavity.

[0024] The application adopts a renal pelvis pressure control system to effectively control the renal pelvis pressure and maintain a good operation space.

[0025] Finally, the application is suitable for percutaneous nephrolithotomy, and can also be widely applied to ureteroscopy and other operations requiring perfusion, and has a wide application range. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The figure is a use example of the ureter endoscope in the renal pelvis in the embodiment of the application.

[0027] Figure 2 The figure is an example of the ureter endoscope in the embodiment of the application.

[0028] Figures 3-5 The figure is a distribution example of the pressure measuring hole in the ureter endoscope in the embodiment of the application.

[0029] Figures 6-7 The figure is a pressure relief example when reflecting in the embodiment of the application. DETAILED DESCRIPTION

[0030] The embodiments of the present application will be described in detail with specific reference to the drawings. The skilled person can easily understand other advantages and effects of the present application from the disclosure of the present specification. The present application can also be implemented or applied by different specific embodiments, and the details in the present specification can be modified or changed based on different views and applications without departing from the spirit of the present application. It should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and the like are only used for description purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second", and the like can explicitly or implicitly include one or more features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0031] It should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] In addition, in the description of the present application, "proximal" and "distal" are terms commonly used in the medical field. Specifically, "proximal" refers to the end closest to the operator, "proximal face" refers to the end face closest to the operator, "distal" refers to the end farthest from the operator, and "distal face" refers to the end face farthest from the operator.

[0033] Embodiment one

[0034] Referring to Figure 1 As shown, the present application provides a ureteral endoscope which can be used in a renal pelvis pressure control system. It can be used in percutaneous nephrolithotomy surgery, and can also be widely used in ureteroscopy surgery and other surgeries requiring perfusion.

[0035] Referring to Figure 2 As shown, an embodiment of a ureteral endoscope for a renal pelvis pressure control system includes:

[0036] An endoscope catheter 2 is arranged in a guide sheath 1 of the renal pelvis pressure control system; the endoscope catheter 2 is provided with a perfusion channel 3, the perfusion channel 3 is in communication with the interface of the perfusion device, and the perfusion mode is executed to perfuse water flow into the cavity to expand the space in the cavity;

[0037] An attraction channel 4 is formed between the endoscope catheter 2 and the sheath tube of the guide sheath 1, the attraction channel 4 is in communication with the interface of the attraction device, and the attraction mode is executed to suck stones and discharge them out of the body under the action of negative pressure suction after the stones are crushed;

[0038] One or more pressure measuring holes 5 are provided on the endoscope catheter 2, and the pressure measuring holes 5 are arranged in different directions to stabilize the pressure of water flow impact and monitor the pressure value in the cavity in real time in different modes.

[0039] The core point of the present application is that the organ cavity is soft, and in the absence of water, the cavity is basically closed. By perfusing water flow, the cavity can be expanded to form a surgical space. In the static water-filled cavity, the pressure sensor inside the pipeline can complete the accurate pressure measurement task as long as there is one pressure measuring hole 5. However, when the perfusion or suction mode is implemented, the renal pelvis is in a flowing water cavity, and the pressure at different points in the cavity is quite different. In particular, the place where the water flows out, under the action of the water flow, the pressure is the largest. When the water flow hits the cavity wall and reflects back, if there is only one pressure measuring hole 5, the pressure measured will be significantly greater than the pressure at other places in the cavity. This is the local pressure under the impact of the water flow. However, if another pressure measuring hole 5 is opened in the other direction of the pipeline, the flow reflected by the water flow impacting the cavity wall will drain and relieve pressure in the direction of the other pressure measuring hole 5, thereby significantly reducing the impact of the reflected flow on the pressure sensor, so that the data measured is closer to the pressure value at other places in the cavity. The pressure measuring hole 5 not impacted by the reflected flow has a pressure relief effect. Since the water flow is in one direction, the reflection after hitting the cavity wall is also in one direction, and it will not simultaneously impact two or more pressure measuring holes in different directions. This allows the pressure sensor to measure a pressure value close to that at other places in the cavity, thereby more truly reflecting the correct pressure value in the cavity.

[0040] The endoscope used in the present embodiment can be an electronic flexible scope, a rigid scope, or other urinary stone removal surgery supporting instruments.

[0041] One embodiment further comprises a pressure measuring channel (not shown in the figure) extending along the length direction of the endoscope catheter 2 and penetrating through the endoscope catheter 2, the side of the pressure measuring hole 5 close to the pressure measuring channel is connected with the pressure sensor, and the side of the pressure measuring hole 5 away from the pressure measuring channel is in communication with the medium in the cavity. The pressure sensor used in the present embodiment is located below one or more pressure measuring holes 5, which is beneficial to reduce the impact of the reflected flow.

[0042] Referring to Figures 3-7 The pressure measuring hole 5 in the present embodiment can be single-hole arranged or two-azimuth-hole arranged or other-azimuth-hole arranged as shown in the figure:

[0043] One embodiment, the pressure measuring hole 5 is arranged on the distal end face of the endoscope catheter 2, and is connected with the pressure measuring channel through the pressure measuring hole 5. There can be one or more pressure measuring holes 5 on the distal end face of the endoscope catheter 2.

[0044] One embodiment, the pressure measuring hole 5 is arranged on the outer surface of the distal end of the endoscope catheter 2, and is connected with the pressure measuring channel through the pressure measuring hole 5. There can be one or more pressure measuring holes 5 on the outer surface of the distal end of the endoscope catheter 2.

[0045] The person skilled in the art can understand that, when the single hole is arranged, in one case, the pressure measuring hole 5 is a pressure sensor front hole, i.e. a pressure measuring hole on the distal end face of the endoscope catheter 2, and in another case, the pressure measuring hole 5 is a pressure sensor side hole, i.e. a pressure measuring hole on the outer surface of the distal end of the endoscope catheter 2. No matter the pressure sensor front hole or the pressure sensor side hole, both are water inlet holes, and the accurate pressure measurement task can be completed.

[0046] In one embodiment, the pressure measuring hole 5 is arranged on the distal end face of the endoscope catheter 2 and the outer surface of the distal end of the endoscope catheter 2. Under the action of water flow, the pressure measuring hole 5 in the same direction is impacted to obtain a local pressure value. When the water flow impacts the cavity wall to generate a reflected flow impact, the pressure measuring hole 5 in the other direction is depressurized to obtain a true pressure value.

[0047] The person skilled in the art can understand that, when two holes are arranged, one or more pressure sensor front holes and one or more pressure sensor side holes are arranged. The pressure sensor front hole is a front hole, and the pressure sensor side hole is a side hole. In one case, water is introduced from the front hole and discharged from the side hole. In another case, water is introduced from the side hole and discharged from the front hole.

[0048] In one embodiment, the pressure measuring channel is arranged close to the distal end of the endoscope catheter 2 and connected to the endoscope handle circuit from the distal end of the endoscope catheter 2. In implementation, the pressure measuring channel is in front of the soft mirror, and is connected to the soft mirror handle through an electronic wire from the distal end. When there is a need for intracavity pressure measurement, the pressure sensor must be placed in the renal calyx to truly measure the intrarenal cavity pressure. In this embodiment, the pressure sensor is placed at the distal end of the endoscope. During the actual operation process, the pressure sensor can accurately feedback the intracavity pressure of the patient to the doctor, ensuring the safety and efficiency of the entire operation process. Also, it avoids the situation in the traditional operation process that the intracavity pressure cannot be predicted, which causes the intrarenal pressure or damage to the patient due to the excessive intracavity pressure.

[0049] In this embodiment, one pressure sensor corresponds to one or more pressure measuring holes 5. The pressure sensor is a precision element, and direct contact with other objects must be avoided. Therefore, the pressure sensor is installed in the pressure measuring channel. The size of the corresponding pressure measuring hole 5 on the pressure measuring channel is smaller than that of the pressure sensor, so as to avoid the pressure sensor from falling out or directly contacting the intracavity tissue and being damaged. The shape of the pressure sensor is not limited, and the optimal selection is that the smallest pressure measuring hole 5 corresponds to the largest pressure measuring channel.

[0050] In one embodiment, the perfusion channel 3 is provided with a separate optical fiber 6, which is integrated with the perfusion channel 3, performs a lithotripsy mode in the cavity to bring the optical fiber close to the intracavitary kidney stones and perform laser powdering. The optical fiber is mainly responsible for the function of achieving powdering and fragmentation of the stones during the operation.

[0051] In one embodiment, the distal end of the endoscope catheter 2 is provided with an imaging assembly 7 and a light source assembly 8 for providing a clear field of view under the illumination light source to collect and monitor the intracavitary environment. The sheath tube of the guide sheath 1 enters the renal pelvis along with the bending of the endoscope catheter 2, directly close to the stone site. The endoscope catheter 2 is provided with an imaging assembly 7 and a light source assembly 8 at the front end. The imaging assembly 7 provides clear imaging effect and high resolution, and the light source assembly 8 provides light intensity, provides sufficient brightness in the renal calyx, and provides sufficient clarity for the field of view imaging, to meet the clarity of the entire field of view.

[0052] Embodiment two

[0053] The application also provides a renal pelvis pressure control system, which comprises a guide sheath, a perfusion device, a suction device, and a ureteral endoscope as described in the embodiments of the application, i.e.

[0054] The endoscope catheter 2 is arranged in the guide sheath 1 of the renal pelvis pressure control system. The endoscope catheter 2 is provided with a perfusion channel 3, which is in communication with the interface of the perfusion device, performs a perfusion mode in the cavity to perfuse water flow into the cavity to expand the intracavitary space.

[0055] The endoscope catheter 2 and the sheath tube of the guide sheath 1 form a suction channel 4, which is in communication with the interface of the suction device, performs a suction mode in the cavity to suck the crushed stones under the negative pressure suction and discharge them out of the body.

[0056] The endoscope catheter 2 is provided with one or more pressure measuring holes 5, which are arranged at different positions. The pressure measuring holes 5 at different directions stabilize the pressure of the water flow, and the intracavitary pressure value is monitored in real time in different modes, which effectively controls the pressure in the renal pelvis and maintains a good surgical space.

[0057] The endoscope catheter 2 forms an endoscope channel when moving in the sheath tube of the guide sheath 1, which can perform and switch into a mirror mode, a stone clearing mode and a lithotripsy mode. The endoscope catheter 2 is provided with an endoscope catheter 2, which is provided with an imaging assembly 7 and a light source assembly 8 at the front end. The imaging assembly 7 provides clear imaging effect and high resolution, and the light source assembly 8 provides light intensity, provides sufficient brightness in the renal calyx, and provides sufficient clarity for the field of view imaging, to meet the clarity of the entire field of view.

[0058] Application example one

[0059] The application also provides a nephroscope for percutaneous nephroscopic surgery, comprising the ureteral endoscope according to the first embodiment of the application, namely comprising:

[0060] The endoscope catheter 2 is arranged in the guide sheath 1 of the renal pelvis internal pressure control system, and the endoscope catheter 2 is provided with a perfusion channel 3, which is in communication with the interface of a perfusion device, and performs a perfusion mode to perfuse water flow into the cavity to expand the space in the cavity.

[0061] The endoscope catheter 2 and the sheath tube of the guide sheath 1 form an aspiration channel 4, which is in communication with the interface of an aspiration device, and performs an aspiration mode to aspirate and discharge the crushed stones out of the body under the negative pressure aspiration.

[0062] The endoscope catheter 2 is provided with one or more pressure measuring holes 5, and the pressure measuring holes 5 are arranged in different directions, and the pressure of water flow impact is stabilized through the pressure measuring holes 5 in different directions, and the pressure value in the cavity is monitored in real time in different modes.

[0063] The pressure measuring holes in multiple directions are used for pressure measurement in one direction and pressure measurement and drainage pressure relief in another direction, so that a good surgical space is maintained during surgery.

[0064] The endoscope catheter 2 forms an endoscope channel when moving in the sheath tube of the guide sheath 1, and can perform entering and switching into a mirror mode, a stone clearing mode and a stone crushing mode in the cavity. During surgery, the ureteral endoscope is close to the stones with the endoscope soft mirror or hard mirror to perform the stone crushing mode, the stones are crushed after the stone crushing mode, the stone clearing mode is performed after the mirror is withdrawn, the crushed stones and waste water are discharged out of the body, and the efficiency of the stone removal surgery is improved.

[0065] The embodiments of the application are described in detail above in combination with the drawings, but the application is not limited to the above embodiments. Even if various changes are made to the application, if the changes fall within the scope of the claims of the application and equivalent technologies thereof, they still fall within the protection scope of the application.

Claims

1. A ureteral endoscope, characterized by, A renal pelvis pressure control system comprises: an endoscope catheter arranged in a guide sheath of the renal pelvis pressure control system; a perfusion channel is arranged on the endoscope catheter, and the perfusion channel is in communication with an interface of a perfusion device to perform a perfusion mode to perfuse water flow into a cavity to expand a space in the cavity; an aspiration channel is formed between the endoscope catheter and a sheath tube of the guide sheath, and the aspiration channel is in communication with an interface of an aspiration device to perform an aspiration mode to aspirate and discharge crushed stones under the action of negative pressure aspiration; a plurality of pressure measuring holes are arranged on the endoscope catheter, and the pressure measuring holes are arranged at different positions, and the pressure of water flow impact is stabilized through the pressure measuring holes at different directions, and the pressure value in the cavity is monitored in real time in different modes; the pressure measuring holes are arranged on a distal end face of the endoscope catheter and an outer surface of a distal end of the endoscope catheter, when the flow reflected by water flow impact on a cavity wall impacts the pressure measuring holes, the pressure measuring holes in another direction are relieved to obtain a true pressure value.

2. The ureteral endoscope of claim 1, wherein, a pressure measuring channel extends along the length direction of the endoscope catheter and penetrates the endoscope catheter through the pressure measuring holes, one side of the pressure measuring holes close to the pressure measuring channel is connected with a pressure sensor, and the other side of the pressure measuring holes away from the pressure measuring channel is in communication with a medium in the cavity.

3. The ureteral endoscope of claim 2, wherein, The pressure measuring channel is connected to an endoscope handle through an electronic wire from the distal end.

4. The ureteral endoscope of claim 1, wherein, An independent optical fiber is arranged in the perfusion channel, the optical fiber is arranged integrally with the perfusion channel, a lithotripsy mode is performed to the cavity to make the optical fiber close to kidney stones in the cavity and perform laser powderization.

5. The ureteral endoscope of claim 1, wherein, An imaging assembly and a light source assembly are arranged on the distal end face of the endoscope catheter to provide a clear field of view under the illumination of the light source to collect and monitor the environment in the cavity.

6. A system for controlling pressure in a renal pelvis, characterized by The renal pelvis pressure control system comprises a guide sheath, a perfusion device, an aspiration device, and the ureteral endoscope of any one of claims 1 to 5.

7. The renal pelvis pressure control system of claim 6, wherein the endoscope catheter forms an endoscope channel when moving in the sheath tube of the guide sheath, and can perform and switch into a mirror mode, a stone clearing mode, and a lithotripsy mode in the cavity.

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