WO2024061277A1

WO2024061277A1 - Electronic hard ureteroscope with centralized arrangement

Info

Publication number: WO2024061277A1
Application number: PCT/CN2023/120078
Authority: WO
Inventors: 陈革; 方立; 李强; 程跃; 单剑; 陈卿业; 吴海良; 黄俊俊
Original assignee: 宁波大学附属第一医院
Priority date: 2022-09-21
Filing date: 2023-09-20
Publication date: 2024-03-28
Also published as: CN115500767A

Abstract

Provided is an electronic hard ureteroscope (1) with a centralized arrangement, which comprises: a hard ureteroscope body (10) having a front end wall (101) and a peripheral wall (102), a perfusion channel (20), a discharge channel (30), and an image acquisition device (50). The portion of the front end wall (101) adjacent to a peripheral edge thereof forms a side corner of the hard ureteroscope body (10) with the outer peripheral wall (102). The hard ureteroscope body (10) comprises a centralized arrangement region (11) located at the side corner of the hard ureteroscope body (10) and a remaining unoccupied arrangement region (12). The discharge channel (30) is arranged in the unoccupied arrangement region (12), and the perfusion channel (20) and the image acquisition device (50) are arranged in the centralized arrangement region (11).

Description

Centrally arranged electronic rigid ureteroscope

Technical field

This application relates to the field of medical devices, and in particular to a centralized arrangement of electronic rigid ureteroscopes.

Background technique

Urinary tract stone disease (e.g., urolithiasis, ureterolithiasis) is a common urinary tract disease. The prevalence and recurrence rate of urinary tract stones are high and are increasing year by year, which will seriously affect people's health.

Currently, ureteroscopy is widely used in the treatment of urinary tract stone disease. The ureter can enter the ureter or kidney through the natural passage of the human body (for example, the urethra) to treat stones. According to the rigidity and flexibility of the ureteroscope, ureteroscopes can be divided into: flexible ureteroscope and rigid ureteroscope. Flexible ureteroscope is mainly used to treat urinary tract stones and upper ureteral stones; rigid ureteroscope is mainly used to treat middle and lower ureteral stones. , can also be used to treat some upper ureteral stones and some kidney stones.

In practical applications, it has been found that rigid ureteroscopy still has shortcomings in expelling stones. Specifically, in the process of using a rigid ureteroscope to treat urethral stones, the crushed stones are mainly discharged through the drainage channel of the rigid ureteroscope. However, the radial size of the drainage channel is limited. When the stone enters the drainage channel or passes through Drainage channels are prone to clogging.

Therefore, an optimized stone expulsion protocol for rigid ureteroscopy is needed to avoid stone blockage during expulsion as much as possible.

Contents of the invention

One advantage of the present application is that it provides a centrally arranged electronic ureteroscope, wherein the centrally arranged electronic ureteroscope relatively increases the stone discharge space by designing the spatial arrangement and structural characteristics of the discharge channel for discharging stones, so as to avoid stone blockage during the discharge process as much as possible, thereby improving the stone discharge efficiency.

Another advantage of the present application is to provide a centralized arrangement type electronic rigid ureteroscope, wherein during the operation, the centralized arrangement type electronic rigid ureteroscope arranges other necessary structures other than the discharge channel in A specific area is arranged compactly to minimize the radial size occupied by other necessary structures other than the discharge channel, leaving a large radial space for the discharge channel. In this way, the space for discharging stones can be relatively increased to avoid blockage of stones in the discharge channel as much as possible.

Another advantage of the present application is that it provides a centralized distributed sheath-free percutaneous nephroscope, wherein the centralized arrangement type electronic ureteroscope relatively increases the space for discharging the crushed stones by designing the spatial arrangement and structural characteristics of the discharge channel, without the need to adopt a complex structure or design. Therefore, the present invention successfully and effectively provides a solution, not only providing a simple electronic ureteroscope, but also increasing the practicality of the centralized arrangement type electronic ureteroscope.

In order to achieve at least one of the above advantages, according to one aspect of the present application, the present application provides a centralized arrangement electronic rigid ureteroscope, which includes:

A rigid mirror body having a front end wall and a peripheral wall, a portion of the front end wall adjacent to its outer peripheral edge and the peripheral wall forming a side corner of the rigid mirror body, the rigid mirror body including a The concentrated layout area in the side corners and the remaining free layout area;

Perfusion channels provided in the centralized arrangement area;

A discharge channel provided in the free discharge area, the discharge channel having a discharge port located on the front end wall; and

An image acquisition device is arranged in the spare arrangement area, the image acquisition device includes at least one electronic camera module, and the discharge port is located within the field of view of the image acquisition device.

In the centralized arrangement type electronic rigid ureteroscope according to the present application, the centralized arrangement area and the side corner share a peripheral wall.

In the centralized arrangement electronic rigid ureteroscope according to the present application, the cross-section shape of the discharge channel is a crescent shape.

In the centralized arrangement electronic rigid ureteroscope according to the present application, the rigid scope main body has a front end and a rear end, and the radial size of the rear end of the rigid scope main body is equal to the radial size of the front end. .

In the centralized arrangement electronic rigid ureteroscope according to the present application, the front end portion of the rigid lens body includes a hard lens portion, and the radial size of the hard lens portion gradually decreases from back to front.

In the centrally arranged electronic rigid ureteroscope according to the present application, the front end wall extends forward from a first side of the rigid scope body to a second side opposite to the first side along a preset extension direction. side.

In the centralized arrangement electronic rigid ureteroscope according to the present application, the front end wall includes a first area and a second area extending forward from the first area and adjacent to the second side portion, and the first area The slope of the second zone gradually decreases from the first zone to the second side.

In the centralized arrangement electronic rigid ureteroscope according to the present application, the image acquisition device is provided in the free arrangement area of the rigid scope body and is located behind the discharge port.

In the centrally arranged electronic ureteroscope according to the present application, the inclination of at least a portion of the outlet gradually increases forward from a side thereof adjacent to the image acquisition device.

In the centralized arrangement type electronic rigid ureteroscope according to the present application, the centralized arrangement type electronic rigid ureteroscope will further include a first working channel disposed in the vacant arrangement area.

Further objectives and advantages of the present application will be fully reflected through understanding of the following description and drawings.

These and other objects, features and advantages of the present application are fully reflected in the following detailed description, drawings and claims.

Description of drawings

The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of the embodiments of the present application in conjunction with the accompanying drawings. The drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. They are used to explain the present application together with the embodiments of the present application and do not constitute a limitation of the present application. In the drawings, like reference numbers generally represent like components or steps.

Figure 1 illustrates a working schematic diagram of a centralized arrangement electronic rigid ureteroscope according to an embodiment of the present application.

Figure 2 illustrates a schematic diagram of a centralized arrangement electronic rigid ureteroscope according to an embodiment of the present application.

Figure 3 illustrates a cross-sectional schematic view of the rigid scope main body of a centralized arrangement electronic rigid ureteroscope according to an embodiment of the present application.

Figure 4 illustrates a partial schematic view of the rigid scope main body of a centralized arrangement electronic rigid ureteroscope according to an embodiment of the present application.

Detailed ways

Hereinafter, example embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. It should be understood that the present application is not limited by the example embodiments described here.

Application Overview

As mentioned before, ureteroscopy is widely used in the treatment of urinary tract stone disease. The ureter can be accessed through the body's natural passage (eg, urethra) into the ureter or kidney to treat stones. Rigid ureteroscopy is mainly used to treat middle and lower ureteral stones and some upper ureteral stones. It can also be used to treat some urinary tract stones. In practical applications, it has been found that rigid ureteroscopy still has shortcomings in expelling stones.

Specifically, during the treatment of urethral stones using a rigid ureteroscope, the crushed stones are mainly discharged through the drainage channel of the rigid ureteroscope. However, the radial size of a rigid ureteroscope is limited due to its small radial size to pass through the narrow ureter. Moreover, not only the stone discharge channel occupies the radial size, but other necessary structures will also occupy the radial size of the ureteroscope. The radial size that can be occupied by the stone discharge channel is even more limited. When stones enter or pass through the drainage channel, Clogging is prone to occur.

The inventor of the present application considered that in order to prevent crushed stones from clogging the passage of the rigid ureteroscope, one can start from the size of the crushed stones, and on the other hand, they can start from the structure of the rigid ureteroscope. During practical application, it was found that the size of the crushed stones is difficult to completely control. The conditions under which the stones are crushed are affected by many factors, such as the physical properties of the stones, the output energy of the stone fiber, and the size of the stones. position stability, etc. During the process of crushing urinary tract stones, a large part of the urinary tract stones may be knocked down at the same time and become larger in size. Moreover, the knocked down stones are in a free state and are difficult to be crushed again. Therefore, consider starting with the structure of the rigid ureteroscope to prevent crushed stones from blocking the passage of the rigid ureteroscope.

Based on this, this application proposes to relatively increase the space for discharging crushed stones by adjusting the spatial distribution position and structural characteristics (for example, shape, size) of the discharge channels for discharging stones, so as to avoid being crushed as much as possible. The broken stones cause blockage. Specifically, other necessary structures other than the discharge channel are arranged in a specific area and arranged compactly to reduce as much as possible the radial size occupied by other necessary structures other than the discharge channel, so as to provide the discharge channel with Large radial space remains. In this way, the space for discharging stones can be relatively increased to avoid blockage of stones in the discharge channel as much as possible.

Furthermore, a centralized arrangement electronic rigid ureteroscope is proposed, which includes: a rigid scope main body with a front end wall and a peripheral wall, a perfusion channel, a discharge channel and an image acquisition device. A portion of the front end wall adjacent to its outer peripheral edge and the outer peripheral wall form a side corner of the hard mirror body, and the hard mirror body includes a concentrated arrangement area and remaining areas located at the side corners of the mirror body. of free layout area. The discharge channel is provided in the free discharge area, and the perfusion channel and the image acquisition device are provided in the free arrangement area.

Example rigid ureteroscope

As shown in FIGS. 1 to 4 , a centralized arrangement electronic rigid ureteroscope 1 according to an embodiment of the present application is illustrated. The centrally arranged electronic rigid ureteroscope 1 can be applied in the surgical process of treating urinary tract stones through ureteroscope lithotomy. Specifically, the centralized arrangement electronic rigid ureteroscope 1 is suitable for entering the ureter through the natural channel of the human body (for example, the urethra) to treat urinary tract stones, as shown in Figure 1 . After the urinary tract stones are crushed, the crushed stones can be expelled from the body through the centralized arrangement electronic rigid ureteroscope 1 .

For the convenience of explanation, in the embodiment of the present application, one end of the centralized arrangement of the electronic rigid ureteroscope 1 inserted into the patient's ureter during the operation is used as the front end of the centralized arrangement of the electronic rigid ureteroscope 1, and the end of the centralized arrangement of the electronic rigid ureteroscope 1 is The end opposite to the front end of the centrally arranged electronic rigid ureteroscope 1 serves as its rear end.

In the embodiment of the present application, as shown in Figure 2, the centrally arranged electronic rigid ureteroscope 1 includes: a rigid scope main body 10 having a front end 110 and a rear end 120; The operating portion 60 of the rear end portion 120 of the main body 10 . The rigid scope main body 10 has a front end wall 101 and an outer peripheral wall 102 extending rearwardly from an outer peripheral edge of the front end wall 101 . As an insertion part, the rigid scope body 10 can enter the patient's ureter to treat urinary tract stones. Correspondingly, the effective working length of the rigid scope body 10 is greater than the distance from the urethral orifice to the ureteral orifice. The rigid scope body 10 The total length is greater than its effective working length. The operating part 60 is exposed outside the patient's body and can serve as a bridge connecting the centralized electronic rigid ureteroscope 1 with other equipment to facilitate surgery. For example, the lithotripsy device can enter the rigid scope body 10 through the operating part 60 and reach the ureter to break urethral stones.

It is worth mentioning that in the embodiment of the present application, the radial size of the rear end 120 of the rigid scope body 10 is equal to the radial size of the front end 110, so as to avoid local area damage when entering the narrow ureter. The large radial size makes it difficult to pass through the natural passages of the human body or cause damage to human tissues and organs. The front end portion 110 of the hard lens body 10 includes a hard lens portion and a hard lens body portion extending rearward from the hard lens portion. The radial size of the hard lens front portion 110 refers to the hard lens body. The size of the part. The radial dimension refers to the dimension in the radial direction set by the rigid lens body 10 .

Further, the centrally arranged electronic rigid ureteroscope 1 is arranged with channels for allowing perfusion fluid to pass and channels for allowing crushed stones and refluxed fluids to pass, which can be combined with perfusion stone flushing and negative pressure suction. Remove the stones from the body.

Accordingly, the centrally arranged electronic ureteroscope 1 further includes an infusion channel 20 and a discharge channel 30 provided on the hard mirror body 10. Preferably, the infusion channel 20 and the discharge channel 30 are independent of each other to avoid interference between impacting stones and attracting stones. The infusion channel 20 has an infusion port 21 located at the front end 110, and the discharge channel 30 has a discharge port 31 located at the front end 110. The infusion fluid can be injected into the ureter or kidney from the infusion port 21 through the infusion channel 20, and the crushed stones can enter the discharge channel 30 from the discharge port 31 and be discharged from the body through the discharge channel 30.

Specifically, the perfusion fluid can be injected into the perfusion channel 20 through a perfusion device connected to the flushing channel, and then the perfusion fluid can be injected into the ureter or kidney, and the perfusion fluid can be pumped through a suction device connected to the drainage channel 30 . Suction causes the channel cavity of the discharge channel 30 to be in a negative pressure state, thereby causing stones entering the discharge channel 30 to be discharged from the body.

More specifically, during the operation, the perfusion channel 20 is adapted to communicate with the perfusion equipment to allow the perfusion fluid to pass through and be injected into the ureter or kidney, and the perfusion fluid emitted from the perfusion port 21 can impact the crushed stones. , and when reaching the vicinity of the discharge port 31, under the action of the backward attraction force and the impact force of the perfusion fluid, the crushed stones are carried from the discharge port 31 into the discharge channel 30 to be discharged from the body. .

Correspondingly, the operating part 60 of the centrally arranged electronic rigid ureteroscope 1 includes a housing and at least one connection end provided on the housing. The at least one connection end includes a first connection end and a second connection end. The perfusion device can be connected to the perfusion channel 20 through the first connection end. The suction device can be connected through the second connection end. The connection end is connected to the discharge channel 30 .

It is worth mentioning that the shape and size of crushed stones are difficult to accurately control, and crushed stones are usually irregular in shape, with unexpected gaps between stones. When the size of the stones is relatively large, Or when a large number of stones rush toward the discharge channel 30 at the same time, the stones may block the discharge port 31 of the discharge channel 30 or other positions of the discharge channel 30 . When stones are blocked in the drainage channel 30, not only the blocked stones are difficult to be discharged through the discharge channel 30, but also the stones that have not reached the blocked position of the discharge channel 30 are also difficult to be discharged, which will affect the efficiency of stone removal. Moreover, when the drainage channel 30 is blocked and the perfusion fluid is still continuously injected into the ureter or kidney, the internal pressure of the kidney or ureter will increase, and the safety of the operation will be reduced. Therefore, stones have relatively high requirements on the radial size of the drainage channel 30 .

In the operation process of treating kidney stones using the centralized arrangement of electronic rigid ureteroscope 1, some surgical instruments (for example, lithotripsy equipment, guide wires) and other necessary equipment or Structural reserved space, for example, in some embodiments of the present application, is provided with channels for allowing passage of gravel equipment, image acquisition equipment 50, etc. In order to ensure the space of the discharge channel 30 for discharging crushed stones, under the condition that the radial space of the rigid scope body 10 is limited, other necessary structures other than the discharge channel 30 can be arranged in a specific area. And it is arranged compactly to reduce as much as possible the radial size occupied by other necessary structures other than the discharge channel 30, leaving a large radial space for the discharge channel 30, and in this way can be relatively increased. A space is provided for discharging stones to avoid blockage of stones in the discharge channel 30 as much as possible.

Theoretically, this specific area can be designed in any area of the hard lens body 10 , and the remaining area is used for the layout of the discharge channel 30 . However, the inventor of the present application found that when the specific area is disposed away from the peripheral wall 102 of the rigid lens body 10 in the radial direction set by the rigid lens body 10, and the remaining surrounding area is When the area of the specific area is used to lay out the discharge channel 30, the remaining area will be difficult to be fully utilized.

For example, when the specific area is provided in the central area of the rigid lens body 10, the remaining area is an annular area surrounding the central area, and the discharge channel 30 provided in the remaining area can be designed as an annular channel or a semi-annular channel. . The radial size of the remaining area is equal to the difference between the radial size of the specific area and the radial size of the rigid lens body 10 . However, the annular channel is in the radial direction set by the rigid lens body 10 The size of the stone that is allowed to pass through the part closer to the peripheral wall 102 is less than or equal to one-half of the difference between the radial size of the specific area and the radial size of the rigid lens body 10 , that is, less than or equal to the remaining One-half of the radial size of the area, and blockage is likely to occur when larger stones pass through. Moreover, the entire inner wall of the annular channel protrudes toward the outer wall of the annular channel, which is not conducive to the passage of crushed stones. Of course, the discharge channel 30 provided in the remaining area can be designed as a plurality of circular channels surrounding the remaining area. However, the radial size of the circular channels is also less than or equal to the radial size of the specific area. The difference between the size and the radial size of the hard scope body 10 is one-half, and blockage is likely to occur when larger stones pass through. In this way, the radial space of the remaining area is difficult to be fully utilized.

Compared with the area where the specific area is located away from the outer peripheral wall 102 of the mirror body 10 in the radial direction set by the mirror body 10 , when the specific area is located in the radial direction set by the mirror body 10 When disposed in the area adjacent to the outer peripheral wall 102 of the mirror body 10 in the direction, the space utilization rate of the remaining area is relatively high. Specifically, when the specific area is disposed adjacent to the outer peripheral wall 102 of the mirror body 10 in the radial direction set by the mirror body 10 , the remaining area around the specific area only includes the outer perimeter surrounding part of that particular area around. The radial size of the specific area is still equal to the difference between the radial size of the specific area and the radial size of the mirror body 10 , and the radial size of the discharge channel 30 may be equal to or slightly smaller than the radial size of the specific area. The difference between the size and the radial size of the mirror body 10 makes the utilization of the remaining space relatively high.

Correspondingly, in the embodiment of the present application, the portion of the front end wall 101 of the mirror main body 10 adjacent to the outer peripheral edge of the front end wall 101 and the outer peripheral wall 102 form the side portion of the hard mirror main body 10 Corner, the hard lens body 10 includes a concentrated arrangement area 11 located at a side corner of the lens body 10 and a remaining free arrangement area 12 .

The centralized arrangement area 11 can be used to arrange structures with relatively low radial size requirements. The perfusion channel 20 allows perfusion fluid to pass through. In the embodiment of the present application, the inner diameter of the perfusion channel 20 is on the order of millimeters, and the radial size of the perfusion fluid molecules is much smaller than the inner diameter of the perfusion channel 20. The perfusion fluid has a negative impact on the perfusion channel. 20 shape requirements are relatively low. The requirements for the radial size of the perfusion channel 20 are relatively low. Therefore, the perfusion channel 20 can be compactly arranged in the centralized arrangement area 11 with other necessary structures, leaving a larger diameter for the discharge channel 30. To improve the space utilization of the hard lens main body 10.

Correspondingly, in the embodiment of the present application, the perfusion channel 20 is provided in the centralized arrangement area 11 , and the discharge channel 30 is provided in the vacant arrangement area 12 . Preferably, the centralized arrangement area 11 and the side corners share an outer peripheral wall. In a specific example of this application, the inner diameter of the discharge channel 30 accounts for more than half of the radial size of the hard scope body 10 to prevent crushed stones from blocking the discharge channel 30, and, The cross-section shape of the discharge channel 30 is crescent-shaped.

In the embodiment of this application, both the inner diameter and the outer diameter refer to the equivalent circular diameter. That is, when the cross-sectional shape of the structure is circular, the diameter of the structure is the diameter of the corresponding circle. When the cross-sectional shape of the structure is non-circular, the diameter of the structure is the area and the structure The cross-sectional area is the same as the diameter of the circle.

The discharge port 31 of the discharge channel 30 is located at the front end wall 101 . The front end wall 101 includes a concentrated area corresponding to the concentrated arrangement area 11 and an empty area corresponding to the empty arrangement area 12 . The discharge port 31 is located in the vacant area. The orthographic projection of the discharge port 31 along the axial direction set by the rigid lens body 10 is consistent with the cross-sectional shape of the discharge channel 30 .

Here, the axial direction set by the rigid lens body 10 refers to: along the rigid lens body 10 The central axis of the lens is in the forward direction, and the radial direction set by the rigid lens main body 10 is perpendicular to the axial direction set by the rigid lens main body 10 . The cross-section of a structure refers to the common area (or overlapping area) between the structure and a plane perpendicular to the axial direction set by the rigid lens body 10 . The orthographic projection of the discharge port 31 along the axial direction set by the hard lens body 10 means: when light irradiates the discharge port 31 along the axial direction set by the hard lens body 10, The orthographic projection of the outlet 31 on a plane perpendicular to the central axis of the rigid lens body 10 . The cross section of the discharge channel 30 refers to the common area between the discharge channel 30 and a plane perpendicular to the axial direction set by the rigid lens body 10 .

The shape, size and number of the cross-sections of the perfusion channels 20 can be designed according to actual needs, and are not limited by this application. For example, the cross-sectional shape of the perfusion channel 20 can be designed to be circular, annular, semi-annular, etc., and the total cross-sectional area of the perfusion channel 20 can be designed to be equal to or slightly smaller than the cross-sectional area of the discharge channel 30 , greater than or equal to half of the cross-sectional area of the discharge channel 30 , etc., the number of the perfusion channels 20 may be 1, 2, or other values.

The location, shape, size and number of the filling ports 21 are also not limited by this application. The filling port 21 may be provided on the front end wall 101 , the outer peripheral wall 102 , or the junction of the front end wall 101 and the outer peripheral wall 102 . In a specific example of this application, the filling port 21 is provided in the concentrated area of the front end wall 101, as shown in FIG. 3 . In another specific example of the present application, the filling port 21 is provided on the outer peripheral wall 102 and is adjacent to the discharge port 31 in the axial direction set by the rigid scope body 10 . When the filling port 21 is disposed on the outer peripheral wall 102 , the filling port 21 mainly occupies the space in the axial direction of the rigid scope body 10 . In this way, the radial space of the rigid scope body 10 can be saved. The arrangement of the discharge ports 31 makes the design of the size, shape, quantity and other structural features of the filling port 21 and the discharge ports 31 more flexible.

It is worth mentioning that, as mentioned above, the rigid scope body 10 can be used as an insertion part to enter the patient's ureter to treat urinary tract stones. The front end 110 of the rigid scope body 10 includes a rigid lens part and a The hard lens body portion extends backward from the hard lens portion. In order to allow the rigid lens body 10 to enter the ureter from the patient's urethral opening more smoothly, preferably, the rigid lens portion has a tapered structure from its rear end to its front end, that is, the radial size of the rigid lens portion It gradually decreases from back to front. Specifically, the shape of the hard lens portion can be designed as a cone, a semi-cone, or other shapes with tapered characteristics, which is not limited by this application.

Preferably, the front end wall 101 extends from the first side of the rigid lens body 10 along a preset extension direction. Extending forward to the second side opposite to the first side, the angle between the preset extension direction and the axial direction set by the mirror body is greater than 0° and less than 90°. Correspondingly, the front end wall 101 extends obliquely with respect to a plane perpendicular to the axial direction set by the rigid lens body 10, and forms with the outer peripheral wall 102 from the rear end of the rigid lens portion to its The tapered structure of the front end. That is, the front end wall 101 has a preset angle with a plane perpendicular to the axial direction set by the rigid lens body 10 .

It is worth mentioning that in the embodiment of the present application, not only the radial size of the rear end 120 of the rigid scope body 10 is equal to the radial size of the front end 110, so as to avoid local area damage when entering the narrow ureter. The radial size is too large to pass through the natural channels of the human body or cause damage to the tissues and organs of the human body, and the outer peripheral wall 102 of the rigid scope body 10 is at various positions along the axial direction of the rigid scope body 10 The cross sections are set to be the same. That is to say, the outer peripheral wall 102 of the rigid lens body 10 extends evenly along the rear end portion 120 toward the front end portion 110 so that the entire rigid lens body 10 remains "consistent up and down." In a traditional rigid ureteroscope, it is generally configured with a thicker top and thinner structure, that is to say, the size of the front end portion 110 is larger than the size of the rear end portion 120 . Although this is consistent with the structure of most ureters that are thick at the top and thin at the bottom, the thick rear end 120 of the rigid ureteroscope may be difficult to extract from the narrow end of the ureter when it is pulled out, and may even cause Ureteral rupture. In the embodiment of the present application, the "up and down" and consistent size of the entire rigid lens body 10 not only facilitates the entry of the lens, but also facilitates the withdrawal of the lens from the body.

Further, the front end wall 101 has a first area and a second area extending forward from the first area and adjacent to the second side portion. Preferably, the hard lens head has a tapered structure with a smooth transition from its rear end to its front end, and the second area is tangent to the first area so that the front end portion 110 can enter the ureter from the patient's urethra more smoothly.

Furthermore, the second side part is located in front of the first side part and is the first to enter the urethral opening during the operation. In order to improve the safety of the operation, the front end part 110 is too sharp to avoid causing damage to the tissues and organs. Damage, more preferably, should be more gradual in the second zone adjacent to the second side, the inclination of the second side (i.e., perpendicular to the axial direction set by the rigid lens body 10 The angle between the planes) gradually decreases from back to front. Accordingly, the slope of the second zone gradually decreases from the first zone to the second side.

It is worth mentioning that during the operation of treating kidney stones using the centralized arrangement electronic rigid ureteroscope 1, preferably, the front end 110 of the rigid scope main body 10 is in a visible state, This allows the doctor to observe the position reached by the rigid scope main body 10 and the situation around the rigid scope main body 10 in real time, thereby improving surgical safety. Correspondingly, as shown in Figures 3 and 4, the centralized electronic rigid ureteroscope 1 further includes an image acquisition device 50 provided on the rigid scope body 10, so that the centralized electronic ureteroscope 1 can be monitored in real time. The position reached by rigid ureteroscope 1. Furthermore, the image acquisition device 50 is disposed in the centralized arrangement area 11 of the rigid lens body 10 . Further, the image acquisition device 50 is adjacent to the perfusion channel 20 , so that the image acquisition device 50 and the perfusion channel 20 are compactly arranged in the centralized arrangement area 11 , thereby minimizing the required space. The radial dimensions occupied by the image acquisition device 50 and the perfusion channel 20 leave a large radial space for the discharge channel 30 . Preferably, the front end of the centrally arranged electronic rigid ureteroscope 1 is within the field of view of the image acquisition device 50 .

Specifically, the image acquisition device 50 is adapted to be communicatively connected to an image output device (eg, an image display), so that medical personnel can observe the centralized arrangement of the electronic rigid ureteroscope 1 and the kidney through the image output device. . The image acquisition device 50 includes at least one electronic camera. Preferably, the field of view of the electronic camera can cover most of the front end wall 101 of the centrally arranged electronic rigid ureteroscope 1 .

It is worth mentioning that when the image capture device 50 is implemented to include the electronic camera, since with the advancement of technology, the size of the photosensitive chip of the electronic camera can be reduced, on the premise of maintaining higher pixels, Therefore, the front end 110 of the rigid scope main body 10 can be designed to be smaller, so that the rigid scope main body 10 can be easily sent into the ureter, and can also be easily pulled out from the ureter, thereby reducing ureteral damage. probability.

Furthermore, the discharge port 31 is within the field of view of the image acquisition device 50, so that the status of the discharge port 31 can be observed in real time to improve surgical safety. For example, when it is observed that the discharge port 31 is blocked, the stones blocking the discharge port 31 can be promptly removed, or the infusion of perfusate and the suction of fluid and crushed stones can be stopped in time to maintain the balance of the internal pressure of the kidney.

In order to make the discharge port 31 be within the field of view of the image capture device 50 , the image capture device 50 may be located behind the discharge port 31 . Here, the fact that the image capture device 50 can be located behind the discharge port 31 means that the physical center of the light receiving surface of the image capture device 50 that receives light reflected by the object is located behind the physical center of the discharge port 31 . And, preferably, the discharge port 31 and the image capture device 50 are close to each other from back to front, so that the discharge port 31 is within the field of view of the image capture device 50, and accordingly, the image The collection device 50 and/or the outlet 31 can be positioned relative to the rigid scope body 10 The plane perpendicular to the set axial direction is arranged obliquely.

In a specific example of the present application, the front end wall 101 extends forward from a first side of the rigid mirror body 10 along a preset extension direction to a second side opposite to the first side, also That is, the front end wall 101 extends obliquely relative to a plane perpendicular to the axial direction set by the rigid lens body 10 , as shown in FIG. 4 . Correspondingly, the discharge port 31 formed in the front end wall 101 extends obliquely to a plane perpendicular to the axial direction set by the rigid lens body 10 . The image acquisition device 50 is located behind the discharge port 31 and toward the discharge port 31, and is arranged in the centralized arrangement area 11 obliquely with respect to the radial direction set by the rigid lens body 10, So that at least a part of the discharge port 31 is within the field of view of the image acquisition device 50 .

It should be understood that the greater the inclination of the discharge port 31 is, the closer it is to the central axis of the rigid lens body 10 , and the closer the discharge port 31 is to the image in the radial direction set by the rigid lens body 10 With the acquisition device 50, the possibility that the image acquisition device 50 can capture the discharge port 31 is greater. In this specific example, the inclination of at least a portion of the discharge port 31 gradually increases forward from its side adjacent to the image capture device 50, so that the image capture device 50 can capture the entire image as much as possible. The discharge port 31 and its vicinity. Correspondingly, the tangential direction of at least a portion of the discharge port 31 (the portion whose inclination gradually increases from the side adjacent to the image capturing device 50 forward) is consistent with the direction set by the rigid lens body 10 The angle between the axial directions gradually decreases. Here, the tangential direction of the discharge port 31 refers to the forward direction along the tangential line of the discharge port 31 . In one implementation of this specific example, the angle between the extension direction of the discharge port 31 and the axial direction set by the hard lens body 10 is smaller than the field of view angle of the camera of the image acquisition device 50 . Half.

In other specific examples of this application, the front end surface may extend on a plane perpendicular to the axial direction set by the rigid lens body 10 , and accordingly, the discharge port 31 located on the front end surface may be as described. The rigid lens body 10 extends in a set radial direction, and the image acquisition device 50 is installed in the concentrated arrangement area 11 relatively obliquely toward the discharge port 31 , so that the discharge port 31 is in the One-half the field of view of the electronic camera of the image acquisition device 50 .

It is worth mentioning that when the image capture device 50 includes at least two electronic cameras, the at least two electronic cameras can be dispersedly arranged on different sides of the discharge port 31 so that the viewing angles of the at least two electronic cameras are The field range covers most or even the entire area of the discharge port 31 .

In the embodiment of the present application, the dispersed arrangement electronic ureteroscope further includes a device for allowing At least one working channel through which working components (such as lithotripsy equipment, guide wires and other surgical instruments) pass. The at least one working channel includes a first working channel 40, and the first working channel 40 is provided on the main body of the rigid scope. 10 concentrated arrangement areas 11. Preferably, the first working channel 40 is adjacent to the image acquisition device 50, so that the image acquisition device 50 and the first working channel 40 are compactly arranged in the centralized arrangement area 11, and thus as possible as possible Reducing the radial dimensions occupied by the image acquisition device 50 and the perfusion channel 20 leaves a larger radial space for the discharge channel 30 . The first working channel 40 may be isolated from other channels to avoid mutual interference between channels, or may be connected to other channels, which is not limited by this application.

Correspondingly, in a specific example of this application, the rigid scope body 10 further includes a first working channel 40 connected to the discharge channel 30 . The first working channel 40 includes a longitudinal extension and a transverse extension extending obliquely between the discharge channel 30 and the discharge channel 30 . The transverse extension of the first channel has a cross section adjacent to the discharge channel 30 The first working opening 41 of the discharge port 31.

In this specific example, the distributed electronic ureteroscope further includes at least one working component, and the working component is telescopically disposed on the first working channel 40 . The working component can enter the first working channel 40 from the rear end of the longitudinal extension section, enter the discharge channel 30 from the first working opening 41 and then protrude from the discharge port 31 . Preferably, when the working component extends out of the discharge port 31 , the working component is within the field of view of the image acquisition device 50 . Of course, the working component can also enter the discharge channel 30 from the discharge outlet 31 and enter the first working channel 40 from the first working opening 41 and then extend from the rear end of the first working channel 40 out.

In another specific example of the present application, the at least one working channel includes a first working channel 40 provided on the main body, and the first working channel 40 has a first working opening 41 located on the front end wall 101 . Preferably, the first working opening 41 is within the field of view of the image acquisition device 50 . The centrally arranged electronic rigid ureteroscope 1 further includes at least one working component telescopically disposed in the first working channel 40 , and the head of the at least one working component is adapted to pass through the first working opening 41 extends, and when the head of the at least one working component extends out of the first working opening 41, it is within the field of view of the image acquisition device 50.

Correspondingly, the operating portion 60 further includes a third connection end connected to the first working opening 41 , and the working components can enter the first working channel 40 through the third connection end to perform functional operations.

Those skilled in the art will understand that the working component can be disposed in other channels. For example, the guide wire can enter the perfusion channel 20 from the perfusion port 21 or enter the discharge channel from the discharge port 31 30 to guide the centralized arrangement of the electronic rigid ureteroscope 1 into the ureter. The guide wire guides the centralized arrangement of the electronic rigid ureteroscope 1 into the ureter and can be extracted from the perfusion channel 20 or the discharge channel 30, So as not to affect the injection volume of the perfusate or the export of stones, or affect the passage of other working parts. For another example, the lithotripsy device may be movably disposed in the discharge channel 30 and extend from the discharge port 31 .

In summary, the centralized arrangement type electronic rigid ureteroscope 1 based on the embodiment of the present application has been clarified, wherein the centralized arrangement type electronic rigid ureteroscope 1 adopts the spatial arrangement and structure of the discharge channel 30 for discharge of stones. The unique design relatively increases the space for stone discharge to avoid blockage of crushed stones as much as possible.

Those skilled in the art should understand that the embodiments of the present invention shown in the above description and drawings are only examples and do not limit the present invention. The object of the present invention has been completely and effectively achieved. The functional and structural principles of the present invention have been shown and described in the embodiments, and the implementation of the present invention may have any variations or modifications without departing from the principles.

Claims

Centrally arranged electronic rigid ureteroscope is characterized by:

A rigid mirror body having a front end wall and a peripheral wall, a portion of the front end wall adjacent to its outer peripheral edge and the peripheral wall forming a side corner of the rigid mirror body, the rigid mirror body including a The concentrated layout area in the side corners and the remaining free layout area;

Perfusion channels provided in the centralized arrangement area;

A discharge channel disposed in the spare discharge area, the discharge channel having a discharge outlet located at the front end wall; and

An image acquisition device is arranged in the spare arrangement area, the image acquisition device includes at least one electronic camera module, and the discharge port is located within the field of view of the image acquisition device.
The centralized arrangement type electronic rigid ureteroscope according to claim 1, wherein the centralized arrangement area and the side corner share a peripheral wall.
The centrally arranged electronic rigid ureteroscope according to claim 2, wherein the cross-sectional shape of the discharge channel is a crescent shape.
The centrally arranged electronic rigid ureteroscope according to claim 1, wherein the rigid scope body has a front end and a rear end, and the radial size of the rear end of the rigid scope body is equal to that of the front end. Radial dimensions.
The centrally arranged electronic rigid ureteroscope according to claim 1, wherein the front end of the rigid scope body includes a hard lens portion, and the radial size of the hard lens portion gradually decreases from back to front.
The centrally arranged electronic rigid ureteroscope according to claim 5, wherein the front end wall extends forward from the first side of the rigid scope main body along a preset extension direction to opposite to the first side. the second side.
The centralized arrangement electronic rigid ureteroscope according to claim 6, wherein the front end wall includes a first area and a second area extending forward from the first area and adjacent to the second side, The slope of the second zone gradually decreases from the first zone to the second side.
According to the centrally arranged electronic ureteroscope according to claim 7, the image acquisition device is arranged in a spare arrangement area of the hard endoscope body and is located behind the discharge port.
The centrally arranged electronic ureteroscope according to claim 8, wherein the inclination of at least a portion of the outlet gradually increases forward from a side thereof adjacent to the image acquisition device.
The centralized arrangement type electronic ureteroscope is characterized by comprising:

A rigid mirror body having a front end wall and a peripheral wall, a portion of the front end wall adjacent to its outer peripheral edge and the peripheral wall forming a side corner of the rigid mirror body, the rigid mirror body including a The concentrated layout area in the side corners and the remaining free layout area;

Perfusion channels provided in the centralized arrangement area;

A discharge channel provided in the free discharge area, the discharge channel having a discharge port located on the front end wall;

An image acquisition device is arranged in the spare arrangement area, the image acquisition device includes at least one electronic camera module, and the discharge port is located within the field of view of the image acquisition device; and

It includes a first working channel arranged in the vacant arrangement area.
The centralized arrangement type electronic rigid ureteroscope according to claim 10, wherein the centralized arrangement area and the side corner share a peripheral wall.
The centrally arranged electronic rigid ureteroscope according to claim 11, wherein the cross-sectional shape of the discharge channel is a crescent shape.
The centrally arranged electronic rigid ureteroscope according to claim 10, wherein the rigid scope body has a front end and a rear end, and the radial size of the rear end of the rigid scope body is equal to that of the front end. Radial dimensions.
The centralized arrangement electronic rigid ureteroscope according to claim 10, wherein the front end of the rigid lens body includes a hard lens portion, and the radial size of the hard lens portion gradually decreases from back to front. Small.
The centrally arranged electronic rigid ureteroscope according to claim 14, wherein the front end wall extends forward from the first side of the rigid scope body along a preset extension direction to opposite to the first side. the second side.