Flexible ureteroscope high-efficiency stone-collecting bendable negative pressure suction sheath

Abstract

The utility model discloses a flexible ureteroscope high-efficiency calculus-collecting bendable negative pressure suction sheath, which belongs to the field of medical instruments and comprises a ureter section sheath, a bladder urethra section sheath and a suction tube. The tail end of the ureter section sheath is fixedly connected to the front end of the bladder urethra section sheath; a first opening is formed in the front end of the ureter section sheath; a second opening is formed in the tail end of the bladder urethra section sheath; one side of the bladder urethra section sheath is connected with a suction tube; a calculus collecting device is arranged at one end, close to the bladder urethra sheath, of the suction tube; a negative pressure suction control device is arranged at one end of the suction tube far away from the bladder urethra section sheath; a third opening is formed in the tail end of the suction tube. The wedge-shaped connecting structure of the ureter section sheath and the bladder urethra section sheath is designed in a rocket grading mode, the diameter during negative pressure suction is increased, the stone removing efficiency is improved, for large broken stone blocks, the path for integrally withdrawing the soft lens body or the stone removing net basket to remove the stone is shortened, and the stone removing efficiency is improved again.

Description

Technical Field

[0001] The utility model belongs to the field of medical instruments, and in particular relates to a flexible ureteroscope with high-efficiency stone collection and a bendable negative pressure suction sheath. Background Art

[0002] Ureteroscopic surgery is one of the most common surgeries in urology, and negative pressure suction is one of the latest technologies in ureteroscopy. Negative pressure suction during surgery is one of the important links for rapid and efficient lithotripsy and stone removal. As the time of negative pressure suction increases, while collecting and removing stones quickly and efficiently, the existing stone collection bottle connected to the end of the suction tube is large in size. As the operation time increases, the components of the intraoperative flushing fluid and stones gradually increase, resulting in an increase in the weight of the stone collection bottle, and the weight of the end of the suction tube of the ureteroscope negative pressure suction sheath increases, which increases the drag force on the sheath body outward, making the sheath body very easy to fall out. At the same time, the weight of the sheath body increases, affecting the flexibility of the ureteroscope and other operations. For the removal of larger stone fragments, it is necessary to retreat the soft mirror body or the stone removal basket as a whole to the outlet of the suction end of the soft mirror sheath under negative pressure suction, and repeat the operation. Since the path from the patient's stone site to the suction end is equivalent to the length of the entire soft mirror sheath, the operation time is prolonged.

[0003] During the ureteroscope negative pressure suction surgery, the surgery is usually assisted by stone collection bottles and other methods. Although the stone collection bottle method can collect stones completely, it also collects a large amount of flushing fluid, causing the stones and flushing fluid to mix together, increasing the difficulty of intraoperative operation, and the stones and flushing fluid need to be separated after the operation, which is time-consuming and labor-intensive. Utility Model Content

[0004] In order to solve the deficiencies in the prior art, the utility model provides a flexible ureteroscope with an efficient stone collection and a bendable negative pressure suction sheath, which can efficiently clear stones and conveniently and quickly collect stones.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A flexible ureteroscope with high efficiency and stone collection and a bendable negative pressure suction sheath, comprising a ureteral segment sheath, a bladder urethra segment sheath and a suction tube;

[0007] The end of the ureteral segment sheath is fixedly connected to the front end of the bladder urethra segment sheath;

[0008] A first opening is provided at the front end of the ureteral segment sheath;

[0009] A second opening is provided at the end of the bladder urethra section sheath;

[0010] One side of the bladder urethra sheath is connected to a suction tube;

[0011] A stone collecting device is arranged at one end of the suction tube close to the bladder urethra sheath;

[0012] A negative pressure suction control device is arranged at one end of the suction tube away from the bladder urethra section sheath, and a third opening is arranged at the end of the suction tube.

[0013] The stone collection device comprises a filter screen and a stone collection ball; the filter screen is located in the suction tube close to one side of the negative pressure suction control device.

[0014] The filter screen is an arc-shaped dome, and the arc-shaped dome protrudes toward one side of the stone collecting ball.

[0015] The filter screen is a part of the wall surface of the stone collecting ball and is an integrally formed structure with the stone collecting ball.

[0016] The stone collecting ball is a sphere. After the sphere bulges, the maximum left-right distance is 2.8 cm, and the maximum up-down bulging distance is 2.7 cm. The lower part of the sphere is used to accommodate 2 ml of stones.

[0017] A stone removal outlet is arranged below the stone collecting ball.

[0018] The angle between the bladder urethra section sheath and the suction tube is 30°-60°, and the suction tube is located 10-22 cm away from the front end of the bladder urethra section sheath.

[0019] The diameter of the ureteral segment sheath is 0.33-0.4 cm, and the length is 30-35 cm. The diameter of the bladder urethra segment sheath is 0.53-0.6 cm, and the length is 15-25 cm. The connection between the ureteral segment sheath and the bladder urethra segment sheath is a wedge-shaped connection.

[0020] The first opening is used as the outlet of the ureteroscope operation hole; the second opening is used as the inlet of the ureteroscope operation hole; and the third opening is used to connect the negative pressure drainage tube.

[0021] The beneficial effects of the utility model are as follows: the wedge-shaped connection structure of the ureteral sheath and the bladder urethra sheath in the utility model is designed in a "rocket" graded manner, which increases the diameter during negative pressure suction and improves the stone removal efficiency. For larger broken stones, the path of the soft mirror body or the stone removal basket for overall stone removal is shortened, thereby further improving the efficiency of stone removal. The filter structure in the utility model is designed as a whole with the suction end, and the filter is part of the stone collection ball, which eliminates the influence of the large-volume stone collection ball on the surgical operation and facilitates stone collection. The maximum stone collection volume in the utility model is designed according to the volume fragments that accommodate 2 cm stones, so that all broken stones can be completely collected. The stone collection ball in the utility model is a spherical bulging structure, which is conducive to the retention and deposition of stones here, making it easy to collect stones. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1This is a schematic diagram of the structure of a flexible ureteroscope with high efficiency and stone collection and a bendable negative pressure suction sheath according to the utility model;

[0023] Figure 2 for Figure 1 A magnified image of point A;

[0024] Figure 3 for Figure 1 A magnified view of point B;

[0025] Figure 4 for Figure 3 Enlarged view of point C.

[0026] In the figure: 1 ureteral segment sheath, 2 bladder urethra segment sheath, 3 suction tube, 4 first opening, 5 second opening, 6 stone collecting device, 7 negative pressure suction control device, 8 third opening, 9 filter, 10 stone collecting ball, 11 stone removal outlet. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings, but is not intended to limit the present invention.

[0028] See also Figures 1 to 4 , a flexible ureteroscope with high efficiency and stone collection and a bendable negative pressure suction sheath, comprising a ureteral segment sheath 1, a bladder urethra segment sheath 2 and a suction tube 3;

[0029] The end of the ureteral segment sheath 1 is fixedly connected to the front end of the bladder urethra segment sheath 2;

[0030] A first opening 4 is provided at the front end of the ureteral segment sheath 1;

[0031] A second opening 5 is provided at the end of the bladder urethra section sheath 2;

[0032] One side of the bladder urethra sheath 2 is connected to a suction tube 3;

[0033] A stone collecting device 6 is provided at one end of the suction tube 3 close to the bladder urethra sheath 2;

[0034] A negative pressure suction control device 7 is provided at one end of the suction tube 3 away from the bladder urethra section sheath 2 , and a third opening 8 is provided at the end of the suction tube 3 .

[0035] The utility model is convenient for collecting stones, and eliminates the problem that the collection bottle is large in size and is easily dragged on the soft endoscope sheath after being connected to the suction end of the soft endoscope sheath, causing it to fall out and shift, and is not conducive to the flexible operation of the soft endoscope body during surgery. The spherical structure of the suction end of the utility model is designed according to the lithotripsy capacity of 2ml of stones, and the stone fragments can be conveniently collected after surgery.

[0036] Furthermore, the stone collection device 6 includes a filter 9 and a stone collection ball 10. The filter 9 is a part of the wall of the stone collection ball 10 and is an integrally formed structure with the stone collection ball 10. The filter 9 is located in the suction tube 3 close to the side of the negative pressure suction control device 7.

[0037] The filter is set up to separate the flushing fluid and stones during surgery, thereby reducing the difficulty of intraoperative operation and saving time and effort.

[0038] In this embodiment, based on the above embodiment, in order to reduce the stones staying on the filter, the filter 9 is set to be an arc-shaped dome, and the arc-shaped dome is convex to one side of the stone collecting ball, that is, convex to the inner side of the stone collecting ball.

[0039] Preferably, the filter screen 9 is a part of the wall surface of the stone collecting ball 6, and is an integrally formed structure with the stone collecting ball 6. This has the advantages of saving materials and facilitating disinfection.

[0040] The filter structure in the utility model can prevent the stone fragments in the stone collecting cavity from returning to the suction cavity, and is an integral structure with a part of the wall surface of the stone collecting ball, and can be formed into a finished product in one step, eliminating the previous need for a collection bottle with a volume of 500-1000ml, thereby saving consumables.

[0041] In this embodiment, based on the above embodiment, the stone collecting ball is a sphere. After the sphere bulges, the maximum left-right distance is 2.8 cm, and the maximum up-down bulging distance is 2.7 cm. The lower part of the sphere is used to accommodate stones with a volume of 2 ml.

[0042] Preferably, a stone removal port 11 is provided directly below the stone collecting ball 6, and the stone removal port 11 is connected to a sealing cover by a thread, and the sealing cover is opened to facilitate the removal of stones. The lower part of the ball is used to accommodate more stones. If there are too many stones, the stones can be removed multiple times by opening the spiral sealing cover.

[0043] Preferably, the bladder urethra sheath and the suction tube form an angle of 30°-60°, preferably 45°, and the suction tube is located 10-22 cm away from the front end of the bladder urethra sheath and 5 cm away from the rear end of the bladder urethra sheath.

[0044] The angle between the bladder-urethral sheath and the suction tube is approximately 30°-60°, which facilitates the rolling of stones backward and downward. The suction tube is located 10-22 cm away from the front end of the bladder-urethral sheath, 15-20 cm for male urethra, and 3-5 cm for female urethra. The length from the bladder-urethral sheath to the connection with the suction tube should be longer than the maximum length of the male urethra.

[0045] Preferably, the diameter of the ureteral segment sheath is 0.33-0.4 cm and the length is 30-35 cm, the diameter of the bladder urethra segment sheath is 0.53-0.6 cm and the length is 15-25 cm, and the connection between the ureteral segment sheath and the bladder urethra segment sheath is a wedge-shaped connection.

[0046] The utility model sets the ureteral segment sheath with a diameter of 0.33-0.4cm and a length of 30-35cm. The length of the adult ureter is 25-30cm. The ureteral segment sheath should be longer than the minimum ureteral length of an adult to avoid the ureteral segment sheath being too short and unable to reach the renal calyx at the stone site at a close distance. The diameter of the bladder urethra segment sheath is 0.53-0.6cm and the length is 15-25cm. The male urethra is 15-20cm, and the female urethra is 3-5cm. The length from the bladder urethra segment sheath to the connection with the suction tube should be longer than the maximum male urethra length. The connection between the ureteral segment sheath and the bladder urethra segment sheath adopts a wedge-shaped connection, which can attract stones to the bladder urethra segment sheath and then enter the bladder urethra sheath with a thicker diameter. The stones can be removed by continued suction under negative pressure, and there is no need to withdraw the scope and the stone basket to the end of the scope, thereby reducing the operation time and improving the stone removal efficiency. The soft endoscope sheath in the utility model adopts a "rocket-style" graded design, including a wedge-shaped connection structure of the ureteral segment sheath at the front end (the diameter is consistent with that of the previous soft endoscope sheath) and the bladder urethra segment sheath (the diameter is increased to 0.53-0.6cm). The bladder urethra segment is based on the human anatomical structure. The diameter of the bladder and urethra is obviously thicker than the diameter of the ureter. The diameter of the bladder urethra is increased to facilitate the stone removal efficiency during the continuous negative pressure suction during the operation. At the same time, when larger stone fragments appear, the previous soft endoscope body or stone removal basket needs to be withdrawn as a whole to the suction end of the soft endoscope sheath, and the withdrawal distance is shortened to the starting end of the bladder urethra segment of the soft endoscope sheath, thereby further improving the efficiency of stone removal.

[0047] Furthermore, the first opening 4 is used to connect to the outlet of the operation hole of the ureteroscope; the second opening 5 is used to connect to the inlet of the operation hole of the ureteroscope; and the third opening 8 is used to connect to the negative pressure drainage tube.

[0048] Preferably, the suction tube bulges spherically at the stone collecting ball, increasing the volume while forming a groove-like structure at the lower part of the sphere of the stone collecting ball, making it easier for stones to accumulate here and reducing the clogging effect of stones on the filter. At the same time, the spherical bulge of the stone collecting ball enables it to function in all directions.

[0049] The utility model attracts stones by opening the negative pressure suction control device 7 on the suction tube 3, and the flushing fluid mixed with stones enters the suction tube 3 along the ureteral sheath 1 and the bladder urethra sheath 2, and after passing through the filter 6, the stones will be collected in the spherical stone collecting ball 10, and the flushing fluid flows out through the filter 6. The device of the utility model not only allows the stones to be deposited in the stone collecting ball 10, making it easy to collect the stones, but also does not cause the accumulation of flushing fluid, thereby avoiding the influence of the previous collection bottle on the surgical operation.

[0050] The above description is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A flexible ureteroscope with high efficiency and stone collection and a bendable negative pressure suction sheath, characterized in that: Including ureteral sheath, vesicourethral sheath and suction tube; The end of the ureteral segment sheath is fixedly connected to the front end of the bladder urethra segment sheath; A first opening is provided at the front end of the ureteral segment sheath; A second opening is provided at the end of the bladder urethra section sheath; One side of the bladder urethra sheath is connected to a suction tube; A stone collection device is provided at one end of the suction tube close to the bladder urethra sheath; A negative pressure suction control device is arranged at one end of the suction tube away from the bladder urethra section sheath, and a third opening is arranged at the end of the suction tube.

2. The flexible ureteroscope with high efficiency and stone collection and bendable negative pressure suction sheath according to claim 1, characterized in that: The stone collection device comprises a filter screen and a stone collection ball; the filter screen is located in the suction tube close to one side of the negative pressure suction control device.

3. The flexible negative pressure suction sheath for ureteroscope with high efficiency and stone collection according to claim 2, characterized in that: The filter screen is an arc-shaped dome, and the arc-shaped dome protrudes toward one side of the stone collecting ball.

4. The flexible ureteroscope with high efficiency and stone collection and bendable negative pressure suction sheath according to claim 3, characterized in that: The filter screen is a part of the wall surface of the stone collecting ball and is an integrally formed structure with the stone collecting ball.

5. The flexible ureteroscope with high efficiency and stone collection and bendable negative pressure suction sheath according to claim 4, characterized in that: The stone collecting ball is a sphere. After the sphere bulges, the maximum left-right distance is 2.8 cm, and the maximum up-down bulging distance is 2.7 cm. The lower part of the sphere is used to accommodate 2 ml of stones.

6. The flexible ureteroscope high-efficiency stone collection bendable negative pressure suction sheath according to claim 5, characterized in that: A stone removal outlet is arranged below the stone collecting ball.

7. A flexible ureteroscope with high efficiency and stone collection and bendable negative pressure suction sheath according to any one of claims 1 to 6, characterized in that: The angle between the bladder urethra section sheath and the suction tube is 30°-60°, and the suction tube is located 10-22 cm away from the front end of the bladder urethra section sheath.

8. The flexible ureteroscope high-efficiency stone collection bendable negative pressure suction sheath according to claim 7, characterized in that: The diameter of the ureteral segment sheath is 0.33-0.4 cm, and the length is 30-35 cm. The diameter of the bladder urethra segment sheath is 0.53-0.6 cm, and the length is 15-25 cm. The connection between the ureteral segment sheath and the bladder urethra segment sheath is a wedge-shaped connection.

9. The flexible ureteroscope high-efficiency stone collection bendable negative pressure suction sheath according to claim 8, characterized in that: The first opening is used as the outlet of the ureteroscope operation hole; the second opening is used as the inlet of the ureteroscope operation hole; and the third opening is used to connect the negative pressure drainage tube.

Images