Ureteroscopic sheath kit

Abstract

The present invention discloses a ureteroscope sheath kit, comprising an outer sheath body, a sheath endoscope being arranged in an assembled manner so as to be able to enter and exit the outer sheath body, the sheath endoscope being provided with a working channel, the working channel being accessible for lithotripsy equipment and / or flushing water, and a cavity being provided between the outer wall of the sheath endoscope and the inner wall of the outer sheath body to form a negative pressure suction channel.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a ureteroscope sheath kit. Background Art

[0002] Kidney stones (renal calculi) are caused by the abnormal accumulation of some crystal substances (such as calcium, oxalic acid, uric acid, cystine, etc.) and organic matrices (such as matrix A, acidic mucopolysaccharides, etc.) in the kidneys. They are common and frequently occurring diseases of the urinary system. 90% of them contain calcium, of which calcium oxalate stones are the most common. If kidney stones are not properly treated, they can easily lead to inflammatory infections. In severe cases, hydronephrosis, uremia, and even cancer may occur. When kidney stones are formed, they are mostly located in the renal pelvis or calyx, and can be discharged into the ureter and bladder. Ureteral stones almost all come from the kidneys. Therefore, if kidney stones are not treated in time, they can also cause lesions in other organs.

[0003] Currently, there are several treatments for kidney stones:

[0004] 1. Drink plenty of water to physically expel stones; this method is only suitable for smaller stones, but is ineffective for larger kidney stones.

[0005] 2. Extracorporeal shock wave lithotripsy; this method uses the shock waves of an extracorporeal lithotripsy to break up kidney stones. It is only suitable for those with small and soft stones. Its main complications are renal bleeding and infection.

[0006] 3. Traditional open surgical treatment: This method involves opening the kidney to remove the stones or performing partial / total resection of the kidney, depending on the patient's kidney stone condition. This surgical method is highly traumatic, has a high rate of residual stones, slows postoperative recovery, and may also cause a variety of complications.

[0007] 4. Percutaneous nephrolithotomy; this method requires puncturing the skin at the waist to establish a channel, and directly crushes and removes kidney stones. It is currently the main method for treating stones larger than 2 cm. This method is a significant improvement over traditional open surgery, but this method still causes wounds to the human body, and the incidence of serious complications such as renal bleeding and septic shock is still high.

[0008] 5. Minimally invasive surgical treatment; this method mainly uses a ureteroscope to enter the ureter and renal pelvis and calyx through the urethra, and the soft scope is used to crush the stones; after crushing the stones, this method uses a single tube negative pressure suction to suck out the broken stones and debris. It is the main method for treating stones less than 2 cm. This method is not effective when treating stones larger than 2 cm. The reason is: the current single tube negative pressure suction method is easy to be blocked when the negative pressure suction tube is sucked by negative pressure, and it takes a long time to suck the broken stones, so that the broken stones and blood clots cannot be effectively sucked out, which affects the surgical field of view. The original stone cannot be found, so the operation has to be terminated, and the continuity of the operation cannot be guaranteed. If treatment continues, only two-stage or three-stage surgery or even percutaneous nephrolithotomy can be selected.

[0009] The inventors found that the existing endoscope sheath can only crush the stones first and then flush water for negative pressure suction. This method is inconvenient to operate, time-consuming, and not conducive to the suction of the broken stones. Moreover, when the existing endoscope sheath performs negative pressure suction on the stone chips after lithotripsy of kidney stones (over 2 cm), the negative pressure suction tube is prone to blockage, and because the location of the broken stones is relatively scattered, the broken stones cannot be sucked out quickly and effectively, and multiple operations are required, which undoubtedly increases the physical and economic burden on patients. Summary of the invention

[0010] In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides a ureteroscope sheath kit; the working channel thereof can allow lithotripsy equipment and flushing water to enter, and the gap between the sheath endoscope and the outer sheath body forms a negative pressure suction channel, thereby enabling lithotripsy and stone suction at the same time, which is conducive to rapid surgery and makes it easier to suction out the lithotripsy.

[0011] Furthermore, the present invention adopts the following technical solutions:

[0012] A ureteroscope sheath kit comprises an outer sheath body, in which a sheath endoscope is arranged in an assembled manner so as to be able to enter and exit the outer sheath body. The sheath endoscope is provided with a working channel, through which lithotripsy equipment and / or flushing water can enter. A cavity is provided between the outer wall of the sheath endoscope and the inner wall of the outer sheath body to form a negative pressure suction channel.

[0013] As a further technical solution, when the sheath endoscope is disposed in the outer sheath, the sheath endoscope is closely attached to the inner wall of the outer sheath.

[0014] Placing the sheath endoscope close to the inner wall of the outer sheath can prevent the sheath endoscope from shifting due to suction during the irrigation process, thereby reducing the gap between the outer sheath and the sheath endoscope and affecting the suction effect of stone crushing.

[0015] As a further technical solution, the sheath endoscope includes a first tube wall and a second tube wall, which are connected as a whole; the cross-section of the first tube wall is arc-shaped, and the cross-section of the second tube wall is straight, broken or curved.

[0016] As a further technical solution, the first tube wall is attached to the inner wall of the outer sheath, and the connection between the first tube wall and the second tube wall is against the inner wall of the outer sheath.

[0017] As a further technical solution, the cross-sectional shape of the sheath endoscope is crescent-shaped, circular-shaped, oblate-shaped, or half-moon-shaped.

[0018] As a further technical solution, the outer sheath is a hollow tube, and has an inlet for the sheath endoscope to enter therein; the sheath endoscope is also provided with a camera module and a light source module.

[0019] As a further technical solution, the working part of the sheath endoscope extends out of the working part of the outer sheath body by a set length, and the part of the sheath endoscope extending out of the outer sheath body is bendable.

[0020] As a further technical solution, the sheath endoscope can rotate 360 ​​degrees, and the sheath endoscope is closely attached to the inner wall of the outer sheath when rotating.

[0021] As a further technical solution, a sleeve piece is provided at the end of the outer sheath handheld portion, and the sleeve piece is connected to a rotating connector, which can rotate 360 ​​degrees and is connected to the sheath endoscope.

[0022] In the ureteroscope sheath kit of the present invention, the sheath endoscope is connected to the outer sheath body by a rotating connector and a sleeve member. When clearing stones, the sheath endoscope can be driven to rotate synchronously by rotating the rotating connector, thereby forming a complex vortex of flushing liquid in the sheath endoscope, which has a better flushing effect on intrarenal lithotripsy and can quickly flush out the lithotripsy.

[0023] As a further technical solution, the handheld part of the outer sheath is provided with a negative pressure suction port, which is connected to a negative pressure suction pump. The handheld part of the sheath endoscope is provided with a working channel opening connected to the working channel, and the working channel opening is connected to an irrigation and flushing pump.

[0024] As a further technical solution, the handheld portion of the outer sheath is also provided with a negative pressure regulating port.

[0025] As a further technical solution, the handheld portion of the outer sheath is connected to an external kit, the external kit is a multi-channel pipeline, and the handheld portion of the outer sheath or the external kit is provided with a negative pressure suction port.

[0026] As a further technical solution, the handheld portion or the external kit of the outer sheath is also provided with a negative pressure regulating port.

[0027] As a further technical solution, the external kit is provided with a wide diameter portion, and the inner diameter of the wide diameter portion is larger than the inner diameter of the outer sheath. When the external kit is provided with a negative pressure suction port, the negative pressure suction port is provided at the wide diameter portion. When the external kit is provided with a negative pressure regulating port, the negative pressure regulating port is provided at the wide diameter portion.

[0028] As a further technical solution, the hand-held portion of the outer sheath is provided with a wide diameter portion, and the inner diameter of the wide diameter portion is larger than the inner diameter of the outer sheath.

[0029] As a further technical solution, the wide diameter portion is provided with a negative pressure suction port.

[0030] As a further technical solution, the wide diameter portion is also provided with a negative pressure regulating port.

[0031] As a further technical solution, the wide diameter portion is connected to an external kit, the external kit is a multi-way pipeline, and the wide diameter portion or the external kit is provided with a negative pressure suction port.

[0032] As a further technical solution, the wide diameter portion or the external kit is also provided with a negative pressure regulating port.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The ureteroscope sheath kit of the present invention has a working channel through which lithotripsy equipment and flushing water can enter, and a negative pressure suction channel is formed between the sheath endoscope and the outer sheath body. When lithotripsy is performed by the lithotripsy equipment, water and negative pressure suction are simultaneously introduced, thereby allowing stones to be crushed and sucked out simultaneously, which is beneficial for rapid surgery and makes it easier to suck out the broken stones.

[0035] The sheath endoscope of the ureteroscope sheath kit of the present invention can rotate 360 ​​degrees. When flushing the kidney lithotripsy, the stone fragments at every position in the kidney can be flushed, which increases the flushing area of ​​the flushing liquid and improves the lithotripsy cleaning effect. When the sheath endoscope of the present invention rotates 360 degrees, it can grind and release the stone fragments incarcerated in the lumen of the outer sheath body, and the negative pressure suction effect is significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0037] Figure 1 It is a schematic diagram of a ureteroscope sheath kit of the present invention;

[0038] Figure 2 A schematic diagram of providing a rotating connector for the ureteroscope sheath kit of the present invention;

[0039] Figure 3 is a schematic diagram of a casing member;

[0040] Figure 4 It is a schematic diagram of the cooperation between the side-spray type sheath endoscope and the rotating connector;

[0041] Figure 5It is a schematic diagram of the cooperation between the direct-injection sheath endoscope and the rotating connector;

[0042] Figure 6 It is a cross-sectional view of the cooperation between the sheath endoscope and the outer sheath body according to a preferred embodiment of the present invention;

[0043] Figure 7 A cross-sectional view of the cooperation between the sheath endoscope and the outer sheath body, wherein the second tube wall is in a straight line;

[0044] Figure 8 A cross-sectional view of the cooperation between the sheath endoscope and the outer sheath body, wherein the second tube wall is in the shape of a broken line;

[0045] Fig. 9 A cross-sectional view of the cooperation between the sheath endoscope and the outer sheath body, wherein the second tube wall is curved;

[0046] Fig.10 A cross-sectional view of the sheath endoscope and the outer sheath body provided with a pressure measurement channel of the present invention;

[0047] Fig.11 A schematic diagram of the coordination of the ureteroscope sheath kit of the present invention with an external kit;

[0048] Fig.12 It is a schematic diagram of the ureteroscope sheath kit of the present invention providing a wide diameter portion in the external kit;

[0049] Fig.13 A schematic diagram of a ureteroscope sheath kit handheld portion of the present invention having a wide diameter portion;

[0050] Fig.14 It is a schematic diagram of the coordination of the ureteroscope sheath kit of the present invention with the external kit disposed at the wide diameter portion;

[0051] In the figure, 1 is an outer sheath, 2 is a sheath endoscope, 3 is a negative pressure suction port, 4 is a working part of the sheath endoscope, 5 is a first tube wall, 6 is a second tube wall, 7 is a set of pipe fittings, 8 is a working channel, 9 is a pressure measuring channel, 10 is a wide diameter part, 11 is a rotating connector, 12 is a water outlet, 13 is a columnar structure, 14 is a connecting rod, 15 is a clamping rod, 16 is a card block, 17 is a card slot, 18 is a mirror inlet, 19 is a negative pressure adjustment port, 20 is an external kit, 21 is a camera module, 22 is a light source module, 23 is an opening of a working channel, and 24 is a cavity. DETAILED DESCRIPTION

[0052] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0053] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0054] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0055] Glossary:

[0056] Incarceration is a medical term that means something is stuck.

[0057] As introduced in the background technology, the inventors have found that the prior art has deficiencies. In order to solve the above technical problems, the present application proposes a ureteroscope sheath kit.

[0058] The mirror sheath kit disclosed in this embodiment is further described below in conjunction with the accompanying drawings;

[0059] like Figure 1 As shown, a ureteroscope sheath kit includes an outer sheath body 1. The outer sheath body 1 is inserted into the natural channel of the human body to realize non-invasive surgery. The sheath endoscope 2 can be inserted and removed in the outer sheath body 1 in a combined manner.

[0060] The outer sheath 1 is a hollow pipeline. The handheld portion of the outer sheath is provided with an inlet 18 for the sheath endoscope to enter therein and a negative pressure suction port 3. The negative pressure suction port 3 can be arranged tilted and is connected to a negative pressure suction pump.

[0061] The sheath endoscope 2 is provided with a working channel 8, which can be used for lithotripsy and / or flushing water to enter, and the lithotripsy and the water inlet work simultaneously; when one working channel is provided, the lithotripsy and the water inlet share a common channel, and when multiple working channels are provided, the lithotripsy and the water inlet can be separated and enter through different working channels. The lithotripsy device can enter the kidney through the working channel to crush the stones. The lithotripsy device can be a device that crushes the stones by laser, ultrasound, ballistics, etc., and can be selected according to needs.

[0062] The handheld portion of the sheath endoscope 2 is provided with a working channel opening 23 connected to the working channel 8, and the working channel opening 23 is connected to the irrigation and flushing pump. The working channel opening 23 can be provided at the side of the handheld portion of the sheath endoscope, or at the end of the handheld portion of the sheath endoscope.

[0063] For stones with a diameter greater than 2 cm in the kidney, the main reason why the existing technology cannot use ureteroscopy lithotripsy is that the renal stones and blood clots are mixed in the kidney, resulting in unclear surgical field of view. The scope sheath kit of the present invention can efficiently clean the stones and blood clots, and can solve the problem of unclear field of view during surgery.

[0064] The outer sheath enters the kidney through the ureter, a natural channel of the human body. The instruments for lithotripsy are inserted through the sheath endoscope to perform lithotripsy. At the same time, the sheath endoscope is used to infuse flushing fluid, and the negative pressure of the outer sheath is used to suck out the blood clots and stones in the kidney, achieving the effect of crushing and sucking stones at the same time. The introduction of the sheath endoscope into the outer sheath does not require other auxiliary technologies, and the operation is simple, which can reduce the operation time. Therefore, there is no need to make other operations such as opening a hole in the patient's body, which can truly achieve non-invasive surgery, reduce the patient's pain, and enable the patient to recover in a short time.

[0065] The sheath endoscope 2 is also provided with a camera module 21 and a light source module 22 to provide a light source and observe the intraoperative environment. The sheath endoscope can be provided with corresponding camera channels and light source channels. This is the prior art and will not be described in detail. The sheath endoscope has the following functions: real-time observation, water infusion, lithotripsy and intracavitary operation.

[0066] There is a cavity 24 between the outer wall of the sheath endoscope 2 and the inner wall of the outer sheath body 1 to form a negative pressure suction channel; thus, flushing liquid enters through the working channel of the sheath endoscope and flows out from the cavity between the sheath endoscope and the outer sheath body. When the lithotripsy device is working to crush the lithotripsy, the flushing liquid is perfused inwardly by the sheath endoscope, and the negative pressure is sucked outwardly by the outer sheath body. The outer sheath body and the sheath endoscope form a mirror sheath combination system that crushes and absorbs stones while the sheath endoscope continuously perfuses inwardly and the outer sheath body continuously sucks negative pressure, completing intraoperative lithotripsy and intraoperative removal of foreign bodies such as stones and blood clots, ensuring a clear field of view under the microscope, allowing liquids to circulate, and being able to crush stones quickly and efficiently, and sucking out broken stones, etc., ensuring a clear field of view under the microscope, and not causing blockage of the suction tube. The present invention adopts the method of crushing stones while flushing and suctioning, and uses double-tube negative pressure to perform irrigation and suction. The suction pipeline is not easily blocked. When the field of vision is unclear during the operation or when the operation is performed on larger stones, the stones in the kidney can be effectively suctioned and cleared out. The continuity of the operation can be ensured, and the operation can be completed in one time without the need for further operation.

[0067] The working part of the outer sheath 1 is the end that can be inserted into the kidney for operation, and the other end is the non-working end, that is, the hand-held part, which is used for the doctor to perform surgery; the definitions of the working part and hand-held part of the sheath endoscope are the same as those of the outer sheath.

[0068] When the sheath endoscope 2 is arranged in the outer sheath body 1, the sheath endoscope 2 is closely attached to the inner wall of the outer sheath body 1. The sheath endoscope is closely attached to the inner wall of the outer sheath body to prevent the sheath endoscope from shifting due to attraction during the lavage process, thereby reducing the gap between the outer sheath body and the sheath endoscope and affecting the suction effect of stone crushing.

[0069] In this embodiment, the negative pressure suction port 3 can be arranged on the side of the handheld part of the outer sheath body 1 and opposite to the sheath endoscope 2, that is, the negative pressure suction port and the sheath endoscope are arranged on both sides of the outer sheath body opposite to each other, which can avoid blocking the normal operation of negative pressure suction.

[0070] The working part of the sheath endoscope can be flush with the working part of the outer sheath body, or the working part of the sheath endoscope can be extended to a set length from the working part of the outer sheath body, and the length of the sheath endoscope extending from the outer sheath body can be adjusted according to the need to advance and retreat the sheath endoscope; the part of the sheath endoscope extending from the outer sheath body is set to be flexible, so that the sheath endoscope can enter through the outer sheath body handheld part, and when it is extended from the working part, the sheath endoscope can be bent to the position where the stone is needed to be crushed, and the stone crushing effect is better. In this embodiment, the working part of the sheath endoscope is extended from the outer sheath body by about 0.5cm. The working part 4 of the sheath endoscope is set to extend from the working part of the outer sheath body 1 to a set length, so that the flushing liquid can be prevented from flowing directly from the sheath endoscope working part to the gap between the sheath endoscope and the outer sheath body after the perfusion flushing pump flows into the sheath endoscope; the sheath endoscope working part extends from the outer sheath body working part, so that the flushing liquid will first flow into the kidney after flowing out through the sheath endoscope working part, and the liquid will flow out from the gap between the sheath endoscope and the outer sheath body during the negative pressure suction operation, thereby extending the flushing liquid flow path and ensuring the flushing effect.

[0071] The handheld portion of the outer sheath 1 can also be provided with a negative pressure regulating port 19; an adjusting knob can be provided at the negative pressure regulating port 19 to control the negative pressure. Furthermore, during the process of negative pressure attraction and lithotripsy, if the broken stones are too large, they may be blocked at the port of the outer sheath working part, thereby affecting the effective attraction of the broken stones. By providing the negative pressure regulating port, the negative pressure regulating port can be blocked when negative pressure attraction is required; and when the broken stones block the port of the outer sheath working part, the blocking of the negative pressure regulating port can be cancelled or positive pressure can be introduced into the negative pressure regulating port to adjust the negative pressure in the outer sheath, so that the broken stones can be disengaged from the port of the outer sheath working part, and the patency of the outer sheath can be restored, thereby continuing the attraction of the broken stones.

[0072] The sheath endoscope 2 includes a first tube wall 5 and a second tube wall 6, which are connected as a whole. The cross section of the first tube wall 5 is an arc, and the cross section of the second tube wall 6 is a straight line. Figure 7 or the cross section of the second tube wall 6 is a broken line, such as Figure 8 or the cross section of the second tube wall 6 is curved, such as Fig. 9As shown, it can be set to an arc shape or a quasi-oblate circle shape or a quasi-arc shape; when it is set to a broken line shape or a curved line shape, the specific shape can be set as needed. The cross section of the first tube wall 5 and the second tube wall 6 is the cross section along the radial direction of the sheath endoscope.

[0073] The first tube wall 5 is attached to the inner wall of the outer sheath 1, and the connection between the first tube wall 5 and the second tube wall 6 is against the inner wall of the outer sheath 1. The outer wall of the first tube wall 5 is close to the inner wall of the outer sheath. The arc diameter of the first tube wall 5 is slightly smaller than the inner tube diameter of the outer sheath. The closer the arc diameter of the first tube wall 5 is to the inner tube diameter of the outer sheath, the better, so that the entire sheath endoscope is close to the inner wall of the outer sheath.

[0074] When the second tube wall 6 is also configured to be arc-shaped, as Figure 6 As shown, the curvature of the first tube wall 5 is greater than the curvature of the second tube wall 6 .

[0075] The cross-sectional shape of the sheath endoscope 2 can be any shape such as a circle. As a preferred embodiment of the present invention, Figure 6 As shown, the cross-sectional shape of the sheath endoscope 2 is set to be crescent-shaped.

[0076] The cross-section of the sheath endoscope is set to be crescent-shaped, and the maximum tube diameter of the sheath endoscope is approximately equal to the inner diameter of the outer sheath body. When entering the outer sheath body, it can better stick to one side of the outer sheath body, and the two ends of the sheath endoscope can be against the side wall of the outer sheath body; especially when the outer diameter of the sheath endoscope and the inner diameter of the outer sheath body are roughly equal, it is ensured that the sheath endoscope is tightly attached to the inner wall of the outer sheath body, and the effective negative pressure suction channel area is maximized.

[0077] The cross-sectional shape of the sheath endoscope can also be set to be an arc shape, an oblate circle shape, or a half-moon shape. In this case, the relative rigidity of the sheath endoscope material is a factor to ensure that the sheath endoscope is closely attached to the inner wall of the outer sheath.

[0078] In this embodiment, if Figure 5 As shown, the side of the sheath endoscope 2 is closed, and a water outlet is provided at the end of the working part of the sheath endoscope 2 to form a direct injection type;

[0079] In other embodiments, Figure 4 As shown, a water outlet 12 can be provided on the side of the working part 4 of the sheath endoscope to form a side spray type; these two forms provide different intrarenal vortex effects due to the difference in water outlet angles;

[0080] During specific use, the two types of sheath endoscopes can be used interchangeably to improve the stone removal effect.

[0081] When a water outlet is provided on the side of the working part of the sheath endoscope 2 , the water outlet 12 of the sheath endoscope 2 is provided on the outer side of the first tube wall 5 .

[0082] In a preferred embodiment, the sheath endoscope can rotate 360°, and the sheath endoscope is close to the inner wall of the outer sheath body when rotating; when performing negative pressure suction of kidney stones, the crushed stones may be embedded between the sheath endoscope and the outer sheath body. Since the sheath endoscope in the scheme of the present invention can rotate 360°, the sheath endoscope and the outer sheath body cooperate during the rotation process to grind and release the crushed stones embedded in the lumen of the outer sheath body, and the negative pressure suction effect is significantly improved. When the sheath endoscope rotates, it is close to the inner wall of the outer sheath body, which can ensure that the sheath endoscope will not shake, thereby affecting the area of ​​the negative pressure suction channel.

[0083] The rotation of the sheath endoscope can be realized directly by rotating the sheath endoscope, and the sheath endoscope is set to be made of hard material at this time; it can also be realized by setting a rotating connector: a sleeve piece 7 is set at the end of the outer sheath body handheld portion, and the outer sheath body handheld portion end is fixedly connected to the sleeve piece 7, and the sleeve piece 7 and the outer sheath body handheld portion end can be connected by threaded fastening, that is, an external thread is set at the end of the outer sheath body handheld portion, and the sleeve piece 7 is set with an internal thread, and the sleeve piece is sleeved on the outer sheath body handheld portion end and connected with it by thread. The sleeve piece 7 is sealed and connected to the outer sheath body handheld portion, that is, a sealing gasket is set between the sleeve piece 7 inside and the outer sheath body handheld portion. The sleeve piece 7 is connected with a rotating connector 11, and the rotating connector 11 can rotate 360 ​​°. The rotating connector 11 is connected with the sheath endoscope 2, and when the kidney is rotated and flushed, it is conducive to flushing the stones and stones at each position in the kidney, and improving the stone cleaning effect. By rotating the rotating connector, the sheath endoscope is driven to rotate synchronously, so that the flushing liquid in the sheath endoscope flows out to form a variable and complex vortex, which has a better flushing effect on intrarenal lithotripsy, can quickly and efficiently suck out the lithotripsy without causing blockage of the suction tube, and ensure a clear field of view under the microscope.

[0084] When the rotating connector and the sleeve are provided, the working part of the sheath endoscope can be flush with the working part of the outer sheath body, and the length of the sheath endoscope extending out of the outer sheath body can also be fixed by the rotating connector and the sleeve.

[0085] The rotary connector 11 is provided with a through hole, through which the sheath endoscope 2 passes and is fixedly connected to the rotary connector 11; the through hole is eccentrically arranged on the rotary connector 11, and when the rotary connector 11 is connected to the sleeve member 7, the sheath endoscope 2 is closely attached to the inner wall of the outer sheath body 1. This ensures that the cross section of the suction channel between the outer sheath body and the sheath endoscope is maximized, and improves the efficiency of sucking out foreign bodies such as stones and blood clots.

[0086] In this embodiment, the sheath endoscope 2 and the rotating connector 11 are configured as an integrated structure.

[0087] like Figure 3 As shown, the sleeve member 7 is a hollow structure, and an annular groove 17 is provided on the outer periphery of the sleeve member 7;

[0088] like Figure 4As shown, the rotary connector 11 includes a columnar structure 13, which extends into the interior of the sleeve 7; both sides of the middle of the columnar structure 13 are connected to connecting rods 14, and the ends of the connecting rods 14 are connected to clamping rods 15, the connecting rods 14 are perpendicular to the axis of the columnar structure 13, and the clamping rods 15 are parallel to the axis of the columnar structure 13, and the gap between the two clamping rods 15 is roughly the same as the outer diameter of the sleeve.

[0089] A clamping block 16 is disposed on the inner side of the end of the clamping rod 15 facing the sleeve member 7 . When the rotary connector 11 is connected to the sleeve member 7 , the clamping block 16 is engaged in the clamping groove 17 and can rotate along the clamping groove 17 .

[0090] In this embodiment, the columnar structure 13, the connecting rod 14, and the clamping rod 15 are integrally formed.

[0091] When in use, pinch the end of the clamping rod 15 without the block 16, then the end of the clamping rod 15 with the block 16 will be tilted, move the rotating connector 11 to cooperate with the sleeve member 7, and then release the clamping rod 15, so that the block 16 of the clamping rod 15 is engaged in the groove 17, completing the fixation of the rotating connector 11 and the sleeve member 7; when flushing gravel, rotating the rotating connector 11 drives the sheath endoscope 2 to rotate, so that the flushing liquid flowing out of the sheath endoscope 2 forms a vortex.

[0092] The endoscope sheath kit of the present invention is configured such that flushing liquid is perfused into the sheath endoscope, and negative pressure suction is performed through the negative pressure suction port provided on the outer sheath body. A water outlet is provided on the side or end of the sheath endoscope. The flushing liquid will first flow into the kidney after flowing out through the working part of the sheath endoscope. The liquid will flow out from the cavity between the sheath endoscope and the outer sheath body only when negative pressure suction is working, thereby further extending the flow path of the flushing liquid, increasing the effective flushing area of ​​the flushing liquid, and improving the success rate of removing foreign bodies such as stones and blood clots during surgery.

[0093] In another preferred embodiment, Fig.11As shown, the handheld portion of the outer sheath 1 is connected to the external kit 20, and the handheld portion end is connected to the external kit during the specific connection. The external kit is a multi-way pipeline, and the multi-way pipeline can be connected to the end of the outer sheath by threaded fastening. When the external kit is set, the negative pressure suction port can be set on the handheld portion of the outer sheath or the external kit, and the negative pressure regulating port can also be set on the handheld portion of the outer sheath or the external kit, that is: when only the negative pressure suction port is set, the external kit can be set as a two-way pipeline, and the negative pressure suction port is set on the handheld portion of the outer sheath, and the port of the handheld portion of the outer sheath forms a connecting port connected to the external kit, one of the pipeline ports of the external kit is connected to the handheld portion of the outer sheath, and the other pipeline port can be used as an inlet for the sheath endoscope to enter; when only the negative pressure suction port is set, The external kit can also be set as a three-way pipeline, the negative pressure suction port is set on the external kit, one of the pipeline ports of the three-way pipeline is connected to the end of the outer sheath handheld part, the other pipeline port is used as a negative pressure suction port for negative pressure suction, and another pipeline port is used as an inlet for the endoscope to enter the sheath; when the negative pressure suction port and the negative pressure regulating port are set, the external kit can be set as a two-way pipeline, the negative pressure suction port and the negative pressure regulating port are simultaneously set on the handheld part of the outer sheath, the port of the outer sheath handheld part forms a connecting port connected to the external kit, and the external kit One of the pipeline ports is connected to the outer sheath handheld part, and the other pipeline port can be used as an inlet for the sheath endoscope to enter; when the negative pressure suction port and the negative pressure regulating port are set, the external kit can also be set as a three-way pipeline, one of the negative pressure suction port and the negative pressure regulating port is set in the external kit, the other of the negative pressure suction port and the negative pressure regulating port is set in the outer sheath handheld part, one of the pipeline ports of the three-way pipeline is connected to the end of the outer sheath handheld part, the other pipeline port is used as the negative pressure suction port or the negative pressure regulating port, and there is also a pipeline port As the scope entrance port for the sheath endoscope to enter; when setting the negative pressure suction port and the negative pressure regulating port, the external kit can also be set as a four-way pipeline, and the negative pressure suction port and the negative pressure regulating port are simultaneously set on the external kit, and the port of the outer sheath handheld part forms a connecting port connected to the external kit, one of the pipeline ports of the external kit is connected to the outer sheath handheld part, another pipeline port is used as the negative pressure suction port for negative pressure suction, and one pipeline port is used as the negative pressure regulating port for negative pressure regulation, and one pipeline port can be used as the scope entrance port for the sheath endoscope to enter.

[0094] In a preferred embodiment, Fig.12 As shown, a wide diameter portion is provided in the external kit, and the wide diameter portion is in the form of a pipe, and the inner diameter of the wide diameter portion is larger than the inner diameter of the outer sheath; when the wide diameter portion is provided in the external kit, the negative pressure suction port and / or the negative pressure regulating port can be provided in the wide diameter portion, that is: in the above, when it is selected to provide a negative pressure suction port in the external kit, the negative pressure suction port is provided in the wide diameter portion, and when it is selected to provide a negative pressure regulating port in the external kit, the negative pressure regulating port is provided in the wide diameter portion.

[0095] In a preferred embodiment, Fig.13 As shown, the handheld portion of the outer sheath 1 is provided with a wide diameter portion 10, which is in the form of a pipe, and the inner diameter of the wide diameter portion is larger than the inner diameter of the outer sheath; the wide diameter portion can be a constant diameter pipe (not shown in the figure) or a variable diameter pipe (such as Fig.13 ), a variable diameter pipe is provided with a section of equal diameter channel from the end of the outer sheath hand-held part to the working part and then a section of channel with gradually decreasing diameter is provided, that is, the size of the end of the outer sheath hand-held part is larger than the size of the end of the working part.

[0096] The endoscope sheath kit of the present invention can rotate the sheath endoscope 360 ​​degrees. When irrigating and attracting the kidney lithotripsy, the endoscope can be rotated to the negative pressure suction port of the outer sheath body. The wide diameter portion can increase the diameter of the outer sheath handheld portion, and the sheath endoscope will not block the negative pressure suction port, thereby ensuring continuous and reliable suction of the lithotripsy.

[0097] In a further technical solution, when the negative pressure suction port is provided, the negative pressure suction port is provided at the wide diameter portion.

[0098] In a further technical solution, when the negative pressure regulating port is provided, the negative pressure regulating port is provided in the wide diameter portion.

[0099] In a preferred embodiment, Fig.14As shown, when the wide diameter portion is provided, an external kit 20 may also be provided at the wide diameter portion. When specifically connected, the wide diameter portion port is connected to the external kit, or the external kit may be connected to the side of the wide diameter portion. The external kit is a multi-way pipeline, and the multi-way pipeline and the end of the outer sheath body may be connected by threaded fastening. When the external kit is provided at the wide diameter portion, the negative pressure suction port may be provided at the wide diameter portion or the external kit, and the negative pressure regulating port may also be provided at the wide diameter portion or the external kit, that is: when only the negative pressure suction port is provided, the external kit may be provided as a two-way pipeline, and the negative pressure suction port may be provided at the wide diameter portion, the port of the wide diameter portion forms a connecting port connected to the external kit, one of the pipeline ports of the external kit is connected to the wide diameter portion, and the other pipeline port may be used as an inlet port for the sheath endoscope to enter; when only the negative pressure suction port is provided, the external kit may also be provided The kit is set as a three-way pipeline, the negative pressure suction port is set in the external kit, one of the pipeline ports of the three-way pipeline is connected to the end of the wide diameter part, the other pipeline port is used as the negative pressure suction port for negative pressure suction, and another pipeline port is used as the endoscope inlet for the sheath endoscope to enter; when the negative pressure suction port and the negative pressure regulating port are set, the external kit can be set as a two-way pipeline, the negative pressure suction port and the negative pressure regulating port are set at the wide diameter part at the same time, the wide diameter part port forms a connecting port connected to the external kit, and one of the external kit The pipeline port is connected to the wide diameter part, and the other pipeline port can be used as an inlet for the sheath endoscope to enter; when setting the negative pressure suction port and the negative pressure regulating port, the external kit can also be set as a three-way pipeline, one of the negative pressure suction port and the negative pressure regulating port is set in the external kit, and the other of the negative pressure suction port and the negative pressure regulating port is set in the wide diameter part, one of the pipeline ports of the three-way pipeline is connected to the end of the wide diameter part, and the other pipeline port is used as the negative pressure suction port or the negative pressure regulating port, and there is also a pipeline port as the inlet for the endoscope. The mouth is used for entry of the sheath endoscope; when the negative pressure suction port and the negative pressure regulating port are set, the external kit can also be set as a four-way pipeline, and the negative pressure suction port and the negative pressure regulating port are set on the external kit at the same time. The wide-diameter port forms a connecting port connected to the external kit, and one of the pipeline ports of the external kit is connected to the wide-diameter part, and another pipeline port is used as a negative pressure suction port for negative pressure suction, and one of the pipeline ports is used as a negative pressure regulating port for negative pressure regulation, and one of the pipeline ports can be used as an entry port for entry of the sheath endoscope.

[0100] The sheath endoscope 2 of the present invention can also be provided with a pressure measuring channel 9, and the pressure measuring channel 9 can be connected to an external pressure measuring instrument to perform pressure measurement. If pressure measurement is not required, the pressure measuring channel is closed, and the closure can be in the form of blocking the end of the pressure measuring channel with a block or other structure or any other form that can block it; when pressure measurement is required, the blocking structure is removed, the pressure measuring channel is kept unobstructed, and the pressure measuring instrument can be connected. Pressure measurement is common knowledge in this field and will not be repeated here.

[0101] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

[0102] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A ureteroscope sheath kit, characterized in that: The sheath endoscope is provided in the outer sheath body in an in-and-out assembled manner, the sheath endoscope is provided with a working channel, the working channel is provided with a lithotripsy device and / or flushing water, and a cavity is provided between the outer wall of the sheath endoscope and the inner wall of the outer sheath body to form a negative pressure suction channel; A combined system of endoscope and sheath is formed, in which the endoscope is infused internally and the negative pressure of the outer sheath is sucked in, so as to remove foreign bodies during surgery. The sheath endoscope comprises a first tube wall and a second tube wall, and the first tube wall and the second tube wall are connected as a whole; when the sheath endoscope is arranged in the outer sheath, the first tube wall is attached to the inner wall of the outer sheath; The sheath endoscope is rotatable, and when the sheath endoscope rotates, it is closely attached to the inner wall of the outer sheath; The working part of the sheath endoscope extends out of the working part of the outer sheath body by a set length, and the part of the sheath endoscope extending out of the outer sheath body is bendable.

2. The ureteroscope sheath kit according to claim 1, characterized in that: The sheath endoscope is closely attached to the inner wall of the outer sheath.

3. The ureteroscope sheath kit according to claim 1 or 2, characterized in that: The cross section of the first tube wall is arc-shaped, and the cross section of the second tube wall is straight line-shaped, broken line-shaped, or curved line-shaped.

4. The ureteroscope sheath kit according to claim 3, characterized in that: The connection between the first tube wall and the second tube wall is disposed against the inner wall of the outer sheath.

5. The ureteroscope sheath kit according to claim 1, characterized in that: The cross-sectional shape of the sheath endoscope is crescent-shaped, circular-shaped, oblate-shaped, or half-moon-shaped.

6. The ureteroscope sheath kit according to claim 1, characterized in that: The outer sheath body is a hollow tube and has a lens inlet for the sheath endoscope to enter therein; the sheath endoscope is also provided with a camera module and a light source module.

7. The ureteroscope sheath kit according to claim 1, characterized in that: The hand-held portion of the outer sheath is provided with a negative pressure suction port.

8. The ureteroscope sheath kit according to claim 6, characterized in that: The hand-held portion of the outer sheath is also provided with a negative pressure regulating port.

9. The ureteroscope sheath kit according to claim 1, characterized in that: The hand-held portion of the outer sheath is connected to the external kit, the external kit is a multi-channel pipeline, and the hand-held portion of the outer sheath or the external kit is provided with a negative pressure suction port.

10. The ureteroscope sheath kit according to claim 6, characterized in that: The handheld portion or the external kit of the outer sheath is also provided with a negative pressure regulating port.

11. The ureteroscope sheath kit according to claim 1, characterized in that: The external connecting kit is provided with a wide diameter portion, and the inner diameter of the wide diameter portion is larger than the inner diameter of the outer sheath body.

12. The ureteroscope sheath kit according to claim 1, characterized in that: The hand-held portion of the outer sheath is provided with a wide diameter portion, and the inner diameter of the wide diameter portion is larger than the inner diameter of the outer sheath.

13. The ureteroscope sheath kit according to claim 11, characterized in that: The wide diameter portion is provided with a negative pressure suction port.

14. The ureteroscope sheath kit according to claim 11, characterized in that: The wide diameter portion is also provided with a negative pressure regulating port.

15. The ureteroscope sheath kit according to claim 11, characterized in that: The wide-diameter portion is connected to an external kit, the external kit is a multi-way pipeline, and the wide-diameter portion or the external kit is provided with a negative pressure suction port.

16. The ureteroscope sheath kit according to claim 11, characterized in that: The wide diameter portion or the external kit is also provided with a negative pressure regulating port.

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