WO2021017413A1 - Trousse de gaine flexible pour urétéroscope avec tube de gaine interne rotatif - Google Patents

Trousse de gaine flexible pour urétéroscope avec tube de gaine interne rotatif Download PDF

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Publication number
WO2021017413A1
WO2021017413A1 PCT/CN2020/070319 CN2020070319W WO2021017413A1 WO 2021017413 A1 WO2021017413 A1 WO 2021017413A1 CN 2020070319 W CN2020070319 W CN 2020070319W WO 2021017413 A1 WO2021017413 A1 WO 2021017413A1
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Prior art keywords
sheath
inner sheath
tube
rotating connector
kit
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PCT/CN2020/070319
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English (en)
Chinese (zh)
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张建军
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张建军
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Publication of WO2021017413A1 publication Critical patent/WO2021017413A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/005—Flexible endoscopes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/012—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor
    • A61B1/015—Control of fluid supply or evacuation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/307—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the urinary organs, e.g. urethroscopes, cystoscopes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B2017/22072—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with an instrument channel, e.g. for replacing one instrument by the other
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B2017/22079—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with suction of debris
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B2017/22082—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for after introduction of a substance
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2217/00—General characteristics of surgical instruments
    • A61B2217/002—Auxiliary appliance
    • A61B2217/005—Auxiliary appliance with suction drainage system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2217/00—General characteristics of surgical instruments
    • A61B2217/002—Auxiliary appliance
    • A61B2217/007—Auxiliary appliance with irrigation system

Definitions

  • the invention relates to the technical field of medical devices, in particular to a soft ureteroscope sheath kit with a rotatable inner sheath.
  • Renal calculi are caused by the abnormal accumulation of some crystal substances (such as calcium, oxalic acid, uric acid, cystine, etc.) and organic substrates (such as matrix A, acid mucopolysaccharides, etc.) in the kidneys. It is a common disease of the urinary system. , Frequently-occurring, 90% contains calcium, of which calcium oxalate stones are the most common. If kidney stones cannot be properly treated, it is easy to cause inflammation and infection. In severe cases, hydronephrosis, uremia or even cancer may occur; kidney stones are mostly located in the renal pelvis or calyces, and can be discharged into the ureter and bladder. Almost all ureter stones come from the kidney Therefore, if the kidney stones cannot be treated in time, it can also cause other organ diseases.
  • crystal substances such as calcium, oxalic acid, uric acid, cystine, etc.
  • organic substrates such as matrix A, acid mucopolysaccharides, etc.
  • kidney stones there are the following treatments for kidney stones:
  • Extracorporeal shock wave lithotripsy This method uses the shock wave of an extracorporeal lithotripter to lithotripsy kidney stones. It is only suitable for people with small and soft stones. The main complications are renal hemorrhage and infection.
  • Minimally invasive surgical treatment this method mainly uses a flexible ureteroscope to enter the ureter and renal pelvis and calyx through the urethra, and the stone is crushed by the flexible microscope; after crushing the stone, this method is sucked by a single tube of negative pressure Aspirating gravel and debris is the main method to treat stones below 2cm. This method is not effective when treating stones larger than 2cm. The reason is that the current single-tube negative pressure suction method is easy to block when the crushed stone is sucked by negative pressure, and it takes a long time to attract the crushed stone. And the blood clot cannot be effectively sucked out, which affects the surgical field of vision, and the original stone cannot be found. The operation has to be terminated, and the continuity of the operation cannot be guaranteed. If you continue treatment, you can only choose two-stage, three-stage surgery or even percutaneous nephrolithotomy.
  • the present invention provides a flexible ureteroscope sheath kit with a rotatable inner sheath; the inner sheath is connected to the outer sheath through a rotating connector, and the rotating connector can drive the inner sheath 360° synchronous rotation, a variable and complex vortex can be formed in the kidney when the inner sheath is infused, which is conducive to fast and effective negative pressure suction out of the gravel; when the rotatable inner sheath is rotated in 360°, It has the effect of grinding and releasing the incarceration of debris incarcerated in the lumen of the outer sheath, and the suction effect of negative pressure is obviously improved.
  • a flexible ureteroscope sheath kit with a rotatable inner sheath comprising an outer sheath body, the outer sheath body is entered from the natural pipeline of the human body for non-invasive surgery, and the non-working end of the outer sheath body is provided with a diameter-reducing channel.
  • the side part is provided with a negative pressure suction port
  • the end of the reducing channel is fixedly connected with the sleeve member
  • the sleeve member is connected with the rotating connector
  • the rotating connector can rotate 360°
  • the rotating connector is connected with the inner sheath tube
  • the inner sheath tube is arranged at In the outer sheath and the working end of the inner sheath extends beyond the working end of the outer sheath for a set length
  • the non-working end of the inner sheath is provided with a perfusion flushing port
  • the outer sheath and the inner sheath form a continuous perfusion from the inner sheath inward and
  • a continuous lavage system with continuous negative pressure suction of the outer sheath completes the removal of foreign bodies during the operation; the working end of the inner sheath or the side of the working end is provided with a water outlet.
  • the inner sheath tube is connected to the outer sheath body through a rotating connector and a sleeve part.
  • the rotating connector can drive the inner sheath to rotate synchronously, thereby making the inner sheath
  • the washing liquid forms a complex vortex, which has a better washing effect on the gravel in the kidney and can quickly flush out the gravel.
  • a water outlet is provided at the side of the inner sheath tube to form a side spray type, and a water outlet at the end of the inner sheath tube is provided to form a direct spray type.
  • the two forms provide different intrarenal vortex effects due to the difference in water outlet angle; and
  • the two types of inner sheath can be used interchangeably to improve the stone cleaning effect.
  • the sleeve member is tightly connected with the end of the reducing channel through threads; and the sleeve member and the reducing channel are hermetically connected.
  • the rotary connector is provided with a through hole, and the inner sheath tube passes through the through hole and is fixedly connected to the rotary connector; the through hole is eccentrically arranged on the rotary connector, and the rotary connector is connected to the sleeve member.
  • the sheath tube is closely attached to the inner wall of the outer sheath.
  • the inner sheath tube and the rotating connector are an integral structure.
  • the sleeve member has a hollow structure
  • the rotary joint includes a columnar structure, and the columnar structure extends into the sleeve member.
  • Both sides of the middle of the columnar structure are connected with connecting rods, the ends of the connecting rods are connected with the clamping rods, the connecting rods are perpendicular to the axis of the columnar structure, and the clamping rods are parallel to the axis of the columnar structure.
  • the clamping rod is provided with a clamping block toward the inner side of the end of the sleeve member, and a circumferential clamping groove is provided on the outer periphery of the sleeve member.
  • the columnar structure, the connecting rod and the clamping rod are integrally formed.
  • the negative pressure suction port is arranged obliquely.
  • both the outer sheath body and the inner sheath tube are hollow tubes.
  • the inner sheath tube when the inner sheath tube is arranged in the outer sheath body, the inner sheath tube is closely attached to the inner wall of the outer sheath body.
  • the perfusion flushing port is in communication with a perfusion flushing pump, and the negative pressure suction port is in communication with a negative pressure suction pump.
  • the cross-sectional shape of the inner sheath tube is crescent-shaped or arc-shaped or oblate.
  • the inner sheath tube includes a first tube wall and a second tube wall, the first tube wall and the second tube wall are connected into one body; the cross section of the first tube wall is arc-shaped, and the second tube wall The cross section of the tube wall is straight, broken or curved.
  • the first tube wall is attached to the inner wall of the outer sheath, and the junction of the first tube wall and the second tube wall abuts against the inner wall of the outer sheath, and the outer diameter of the first tube wall is about It is equal to the inner tube diameter of the outer sheath, so that when the inner sheath rotates 360° in the outer sheath body cavity, the outer side wall of the first tube wall is always close to the inner wall of the outer sheath.
  • the water outlet when the water outlet is provided on the side of the working end of the inner sheath, the water outlet is provided on the outer side of the first tube wall.
  • the inner sheath is provided with a single tube or a double tube, and when it is set as a single tube, it is a perfusion channel; when it is set as a double tube, one tube is the perfusion channel, and the other tube is the measuring channel. ⁇ Channel.
  • the flexible ureteral sheath kit of the present disclosure connects the inner sheath to the outer sheath through a rotating connector and a sleeve part.
  • the rotating connector drives the inner sheath to rotate synchronously, thereby making the inner sheath
  • a complex vortex is formed, which has a better flushing effect on the gravel in the kidney, and can quickly and efficiently suck the gravel out, without causing blockage of the suction tube, ensuring a clear vision under the microscope.
  • the rotating connector is rotated, and the inner sheath tube rotates synchronously.
  • the stones and stones at every position in the kidney can be washed, which increases the washing
  • the washing area of liquid improves the cleaning effect of gravel.
  • the rotatable inner sheath tube of the present disclosure is rotated through 360°, it can grind and release the debris incarcerated in the lumen of the outer sheath body, and the negative pressure suction effect is significantly improved.
  • a water outlet is provided on the side of the inner sheath tube to form a side spray type, and a water outlet is provided at the end of the inner sheath tube to form a direct spray type. Due to the difference in water outlet angles, the two forms provide different The effect of vortex flow in the kidney; and the two types of inner sheath can be used alternately to improve the stone removal effect.
  • Figure 1 is a schematic diagram of a flexible ureteral sheath set of the present disclosure
  • Figure 2 is a schematic diagram of the outer sheath body
  • Figure 3 is a schematic diagram of the sleeve member
  • Figure 4 is a schematic diagram of the fit between the side spray type inner sheath and the rotating connector
  • Figure 5 is a schematic diagram of the coordination between the direct injection type inner sheath and the rotating connector
  • Figure 6 is a cross-sectional view of the inner sheath and the outer sheath of the preferred embodiment of the present disclosure
  • Figure 7 is a cross-sectional view of the inner sheath tube and the outer sheath body with a linear second tube wall;
  • Figure 8 is a cross-sectional view of the inner sheath tube and the outer sheath body with the second tube wall in a broken line shape;
  • FIG. 9 is a cross-sectional view of the inner sheath tube and the outer sheath body with a curved second tube wall;
  • Figure 10 is a cross-sectional view of the inner sheath and outer sheath of the present disclosure with a dual channel;
  • Incarceration is a medical term that means stuck.
  • this application proposes a flexible ureteroscope sheath kit with a rotatable inner sheath.
  • the present application provides a flexible ureteroscope sheath kit with a rotatable inner sheath, including an outer sheath body.
  • the outer sheath body enters the human body from a natural tube to perform non-invasive surgery.
  • the non-working end of the outer sheath body is provided with a reducing channel.
  • the side of the reducing channel is provided with a negative pressure suction port, the end of the reducing channel is fixedly connected with the sleeve member, the sleeve member is connected with the rotating connector, the rotating connector can rotate 360°, and the rotating connector is connected with the inner sheath tube.
  • the sheath is arranged in the outer sheath, and the working end of the inner sheath extends beyond the working end of the outer sheath for a set length.
  • the non-working end of the inner sheath is provided with a perfusion flushing port.
  • the outer sheath and the inner sheath are formed from the inner sheath inward
  • a continuous lavage system with continuous perfusion and continuous negative pressure suction by the outer sheath completes the removal of foreign bodies during the operation; a water outlet is provided at the working end or side of the inner sheath.
  • a flexible ureteroscope sheath kit with a rotatable inner sheath includes an outer sheath body 1.
  • the outer sheath body 1 is entered from the human body’s natural pipeline to achieve non-invasive surgery.
  • the inner sheath tube 2 is detachably and assembled in In the outer sheath body 1.
  • the non-working end of the outer sheath body 1 is provided with a variable-diameter channel 10, and the variable-diameter channel is provided with an equal-diameter channel section from the non-working end of the outer sheath body toward the working end, and then a channel section with a gradually decreasing tube diameter is provided. That is, the size of the non-working end of the outer sheath is larger than the size of the working end.
  • the working end of the outer sheath is the end that extends into the kidney for operation, and the other end is the non-working end and the hand-held end.
  • the working end of the inner sheath is defined as the working end of the outer sheath.
  • a negative pressure suction port 3 is provided on the side of the variable diameter channel 10, the negative pressure suction port 3 is arranged obliquely, the negative pressure suction port 3 is connected with the negative pressure suction pump, the non-working end of the inner sheath 2 is provided with a perfusion flushing port, and the perfusion flushing port is connected with the perfusion flushing pump
  • the lavage liquid enters the inner sheath 2 through the perfusion and flushing pump, and flows out from the gap between the inner sheath 2 and the outer sheath 1.
  • the outer sheath 1 and the inner sheath 2 form the inner sheath 2 and continue to infuse inward
  • the continuous lavage system with continuous negative pressure suction by the outer sheath 1 completes the removal of intraoperative stones, blood clots and other foreign objects, which can circulate liquids, etc., can quickly and efficiently aspirate gravels, etc., and will not cause suction tube Blocked to ensure a clear vision under the mirror.
  • the present disclosure adopts suction while flushing, and double-tube negative pressure for lavage and suction.
  • the suction pipeline is not prone to blockage, and it can effectively attract and clear out renal gravel when the vision is unclear during the operation or when the operation is performed on larger stones. , It can ensure the continuity of the operation, and the operation can be completed at one time without the need to move the knife again.
  • the soft lens sheath kit of the present disclosure can Efficient cleaning of gravel and blood clots can solve the problem of unclear vision during the operation, so that stones with a diameter greater than 2cm can also be operated with soft mirror surgery, which can expand the indications of soft mirror surgery.
  • the outer sheath body enters the kidney from the human body’s natural tube ureter, and the instruments for intra-renal calculus lithotripsy are entered through the outer sheath body tube to perform soft endoscopic surgery.
  • the surgical instrument is withdrawn.
  • the inner sheath tube is entered through the outer sheath body pipeline, and the inner sheath tube and the outer sheath body form a continuous lavage system.
  • the inner sheath tube is introduced into the outer sheath body without the need for flexible ureteroscope and other auxiliary techniques.
  • the operation is simple and the operation time can be reduced. Therefore, there is no need to perform other operations such as opening holes in the patient's body, and non-invasive surgery can be truly realized, reducing the patient's pain and allowing the patient to recover in a short time.
  • the working end 4 of the inner sheath tube is extended from the working end of the outer sheath body 1 to a set length, and the outer diameter of the outer sheath body can be F14-16, and the inner diameter can be F12-14.
  • the working end of the inner sheath tube 2 protrudes about 0.5 cm from the outer sheath body.
  • the working end 4 of the inner sheath is set to extend out of the working end of the outer sheath body 1 for a set length, so that the setting can prevent the flushing liquid from flowing into the inner sheath from the perfusion and flushing pump directly to the inner sheath and the outer sheath.
  • the working end of the inner sheath extends out of the working end of the outer sheath, so that the flushing liquid will flow into the kidney first after flowing out through the working end of the inner sheath, and the liquid will only flow from the inner sheath,
  • the outer sheath flows out from the gap, thereby extending the flow path of the flushing liquid and ensuring the flushing effect.
  • the end of the reducing channel 10 is fixedly connected with the sleeve member 7, and the end of the sleeve member 7 and the end of the reducing channel 10 can be fastened by threads. That is, the end of the outer sheath body reducing channel 10 is provided with an external thread, and the sleeve member 7 is provided with an inner Thread, the sleeve part is sleeved on the end of the variable diameter channel and connected with the thread.
  • the sleeve member 7 and the reducing channel 10 are connected in a sealed manner, that is, a sealing gasket is arranged between the inside of the sleeve member 7 and the reducing channel 10.
  • the sleeve member 7 is connected with the rotating connector 11, the rotating connector 11 can be rotated 360°, and the rotating connector 11 is connected with the inner sheath tube 2.
  • the gravel When aspiration of intra-renal calculus is performed under negative pressure, the gravel may be incarcerated between the inner sheath and the outer sheath. Since the inner sheath can rotate 360° in the solution of the present disclosure, the inner sheath can be rotated during the rotation process. The matching place with the outer sheath body has the effect of grinding and releasing the incarceration of debris in the lumen of the outer sheath body, and the negative pressure suction effect is obviously improved.
  • the inner sheath tube can be rotated 360°.
  • the inner sheath tube can be rotated to the negative pressure suction port of the outer sheath body.
  • the negative pressure suction port will not be blocked, thereby ensuring the continuous and reliable suction of the gravel.
  • the rotary connector 11 is provided with a through hole, and the inner sheath tube 2 passes through the through hole and is fixedly connected to the rotary connector 11; the through hole is eccentrically arranged on the rotary connector 11, and the inner sheath tube 2 is tight when the rotary connector 11 is connected to the sleeve member 7. 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 and the inner sheath is maximized, and the efficiency of sucking out foreign objects such as stones and blood clots is improved.
  • the inner sheath 2 and the rotating connector 11 are arranged as an integral structure.
  • the sleeve member 7 is a hollow structure, and the outer circumference of the sleeve member 7 is provided with a circumferential clamping groove 17;
  • the rotary connector 11 includes a columnar structure 13, which extends to the inside of the casing member 7; both sides of the middle of the columnar structure 13 are connected to the connecting rod 14, and the end of the connecting rod 14 is connected to the clamping rod 15.
  • the connecting rod 14 is perpendicular to the axis of the columnar structure 13, the clamping rod 15 is parallel to the axis of the columnar structure 13, and the gap between the two clamping rods 15 is approximately the same as the outer diameter of the casing member.
  • the clamping rod 15 is provided with a clamping block 16 facing the inner end of the sleeve member 7.
  • the clamping block 16 is clamped in the clamping slot 17 and the clamping block 16 can rotate along the clamping slot 17.
  • the columnar structure 13, the connecting rod 14, and the clamping rod 15 are arranged in an integral shape.
  • the working end of the inner sheath 2 is closed, and a water outlet 12 is provided on the side of the working end 4 of the inner sheath to form a side spray type;
  • the side of the inner sheath 2 is closed, and a water outlet is provided at the end of the working end of the inner sheath 2 to form a direct spray type.
  • the two forms of inner sheath can be used alternately, that is, one form of inner sheath is used for flushing, and then another form of inner sheath is used for flushing, which can improve the stone removal effect.
  • the inner sheath tube is filled with flushing liquid, and the negative pressure suction port provided on the outer sheath body is used for negative pressure suction.
  • the side or end of the inner sheath tube is provided with a water outlet, and the flushing liquid passes through the inner sheath. After the working end of the sheath flows out, it will flow into the kidney first, and the liquid will flow out from the gap between the inner sheath and the outer sheath during negative pressure suction, further extending the flow path of the flushing liquid, increasing the effective flushing area of the flushing liquid, and improving The success rate of intraoperative removal of stones, blood clots and other foreign bodies.
  • the outer sheath body 1 and the inner sheath tube 2 are both hollow tubes.
  • the inner sheath tube 2 is closely attached to the inner wall of the outer sheath body 1.
  • the inner sheath tube 2 includes a first tube wall 5 and a second tube wall 6, and the first tube wall 5 and the second tube wall 6 are connected into one body.
  • the cross section of the first tube wall 5 is arc-shaped, and the cross section of the second tube wall 6 is linear, as shown in Fig. 7; or the cross section of the second tube wall 6 is in the shape of a broken line, as shown in Fig. 8; or
  • the cross-section of the second tube wall 6 is curvilinear, as shown in Fig. 9, it can be set to be arc-like, oblate-like or arc-like; when it is set as broken line or curve, the specific shape can be set as required .
  • the cross sections of the first tube wall 5 and the second tube wall 6 are the cross sections along the radial direction of the inner sheath.
  • the first tube wall 5 is attached to the inner wall of the outer sheath body 1, and the junction of the first arc-shaped tube wall 5 and the second arc-shaped tube wall 6 abuts against the inner wall of the outer sheath body 1, and the outer wall of the first tube wall 5 Close to the inner wall of the outer sheath, the outer diameter of the first tube wall 5 is approximately equal to the inner tube diameter of the outer sheath.
  • the sheath tube is close to the inner wall of the outer sheath, so that when the inner sheath tube rotates 360° in the body cavity of the outer sheath, the outer side wall of the first tube wall is always close to the inner wall of the outer sheath.
  • the curvature of the first tube wall 5 is greater than the curvature of the second tube wall 6.
  • the water outlet 12 of the inner sheath tube 2 is provided on the outer side of the first tube wall 5.
  • the cross-sectional shape of the inner sheath 2 can be any shape such as a circle. As a preferred embodiment of the present invention, as shown in FIG. 6, the cross-sectional shape of the inner sheath 2 is set to a crescent shape.
  • the maximum diameter of the inner sheath is approximately equal to the inner diameter of the outer sheath.
  • the two ends of the inner sheath can be pressed against the side wall of the outer sheath; especially when the outer diameter of the inner sheath and the inner diameter of the outer sheath are approximately equal, the inner sheath is ensured to be close to the inner wall of the outer sheath, and the effective negative pressure suction channel area is maximized.
  • the cross-sectional shape of the inner sheath tube can also be set to a circular arc shape or an oblate shape. At this time, the relative rigidity of the material of the rotating connector and the inner sheath is to ensure that the inner sheath is closely attached to the inner wall of the outer sheath.
  • the inner sheath 2 of the present invention can be provided with a single pipe or a double pipe. As shown in Fig. 6, when it is set as a single pipe, the perfusion channel 8 is used for perfusion and flushing.
  • the cross-sectional shape of the perfusion channel 8 is the same as that of the inner sheath 2
  • the same shape can also be set as a crescent shape; as shown in FIG.
  • the pressure measurement channel 9 can be connected to an external pressure measurement instrument for pressure measurement. When installing dual pipelines, if pressure measurement is not required, the pressure measurement channel should be closed.
  • the sealing can be in the form of plugging the end of the pressure measurement channel with a block or any other form that can block it; pressure measurement is required At this time, remove the blocking structure, keep the pressure measurement channel unblocked, and connect it to the pressure measurement instrument. Pressure measurement belongs to common knowledge in the field, and will not be repeated here.

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Abstract

L'invention concerne une trousse de gaine flexible pour urétéroscope comprenant un tube de gaine interne rotatif (2), la trousse de gaine flexible pour urétéroscope comportant un corps de gaine externe (1), une extrémité non fonctionnelle du corps de gaine externe (1) étant pourvue d'un canal à diamètre variable (10), une partie latérale du canal à diamètre variable (10) étant pourvue d'un orifice d'aspiration à pression négative (3), une partie d'extrémité du canal à diamètre variable (10) étant reliée de manière fixe à un élément de manchon (7), l'élément de manchon (7) étant relié à un connecteur rotatif (11), le connecteur rotatif (11) pouvant pivoter de 360°, le connecteur rotatif (11) étant relié au tube de gaine interne (2), le tube de gaine interne (2) étant disposé dans le corps de gaine externe (1), une extrémité non fonctionnelle du tube de gaine interne (2) étant pourvue d'un orifice de remplissage et de rinçage, et une partie d'extrémité d'une extrémité fonctionnelle ou une partie latérale de l'extrémité fonctionnelle du tube de gaine interne (2) étant pourvue d'une sortie d'eau (12). Le tube de gaine interne (2) de la trousse de gaine flexible pour urétéroscope est relié au corps de gaine externe (1) au moyen du connecteur rotatif (11), le connecteur rotatif (11) peut faire pivoter le tube de gaine intérieure (2) de manière synchrone sur 360°, et un tourbillon variable et complexe peut se former dans un rein lorsque le remplissage intérieur est effectué par le tube de la gaine intérieure (2), de telle sorte que des pierres brisées peuvent être aspirées rapidement et efficacement au moyen d'une pression négative.
PCT/CN2020/070319 2019-07-26 2020-01-03 Trousse de gaine flexible pour urétéroscope avec tube de gaine interne rotatif WO2021017413A1 (fr)

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CN201910683499.3 2019-07-26

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CN112690871B (zh) * 2020-12-22 2022-05-06 温州市人民医院 一种输尿管负压清石软镜鞘
CN114271765B (zh) * 2021-12-23 2022-07-12 青岛钰仁医疗科技有限公司 一种多功能复合光穿透增强成像系统及增强成像方法
CN114532946A (zh) * 2022-02-23 2022-05-27 杭州思康新医疗科技有限公司 一种内窥镜
WO2024104040A1 (fr) * 2022-11-17 2024-05-23 宁波大学附属第一医院 Urétéroscope combiné courbé, urétéroscope et corps principal d'urétéroscope

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