CN118141471A - Urinary system calculus discharge promoting device and calculus extractor - Google Patents

Urinary system calculus discharge promoting device and calculus extractor Download PDF

Info

Publication number
CN118141471A
CN118141471A CN202410569202.1A CN202410569202A CN118141471A CN 118141471 A CN118141471 A CN 118141471A CN 202410569202 A CN202410569202 A CN 202410569202A CN 118141471 A CN118141471 A CN 118141471A
Authority
CN
China
Prior art keywords
guide wire
basket
wire
air bag
catheter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202410569202.1A
Other languages
Chinese (zh)
Other versions
CN118141471B (en
Inventor
魏武然
李莉
赵启军
潘帆
施旭
樊玉玺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
West China Hospital of Sichuan University
Original Assignee
West China Hospital of Sichuan University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by West China Hospital of Sichuan University filed Critical West China Hospital of Sichuan University
Priority to CN202410569202.1A priority Critical patent/CN118141471B/en
Publication of CN118141471A publication Critical patent/CN118141471A/en
Application granted granted Critical
Publication of CN118141471B publication Critical patent/CN118141471B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
    • A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
    • A61B18/22—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
    • A61B18/24—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor with a catheter
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
    • A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
    • A61B18/22—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
    • A61B18/26—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor for producing a shock wave, e.g. laser lithotripsy
    • 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
    • A61B2017/22038—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 a guide wire
    • 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
    • A61B2017/22051—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 inflatable part, e.g. balloon, for positioning, blocking, or immobilisation
    • 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
    • A61B2017/22051—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 inflatable part, e.g. balloon, for positioning, blocking, or immobilisation
    • A61B2017/22065—Functions of balloons
    • A61B2017/22067—Blocking; Occlusion
    • 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
    • A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
    • A61B2017/2212—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions having a closed distal end, e.g. a loop

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Public Health (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Optics & Photonics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Electromagnetism (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Vascular Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

The invention discloses a urinary system calculus discharge promoting device and a calculus extractor, which belong to the technical field of medical instruments, wherein the discharge promoting device comprises a guide wire, the front end of the guide wire is provided with an air bag and a basket wire, and the air bag is positioned in front of the basket wire in the length direction of the guide wire; the guide wire is provided with an air guide hole, the air guide hole is provided with an air inlet hole positioned at the rear end of the guide wire, and the air guide hole is provided with an air outlet hole communicated with the inner side of the air bag; the basket wires are a plurality of, and the arrangement relation among the basket wires is as follows: the stone extractor comprises a stone extractor, wherein the stone extractor is arranged around the circumferential direction of a guide wire at intervals, the front ends of all basket wires are fixed on a fixed ring, the rear ends of all basket wires are fixed on a slip ring, the fixed ring is fixed on the guide wire, the slip ring is sleeved on the guide wire and can slide along the length direction of the guide wire, and the stone extractor comprises an ejection promoting device. The utility model has the advantages of not only effectively intercepting cracked stones, avoiding the upward movement of the stones to the ureter, but also having the characteristic of high interception reliability.

Description

Urinary system calculus discharge promoting device and calculus extractor
Technical Field
The invention relates to the technical field of medical instruments, in particular to a urinary system calculus discharge promoting device and a calculus extractor.
Background
Urinary system stones are common diseases of the urinary system, and can be found in any part of the kidney, bladder, ureter and urethra, and the stones of the kidney and the ureter are the most common, which account for about 80% of the stones of the urinary system. The operation means for removing the calculus comprise percutaneous nephroscope and laparoscopic incision calculus removing operation means and ureteroscope laser lithotripsy calculus removing operation means. The laser lithotripsy and lithotomy operation under the ureteroscope is performed through a natural cavity of a human body, is a minimally invasive urinary system calculus treatment method, and is a common and efficient calculus treatment scheme under the condition that calculus generation positions and the like meet operation conditions.
Taking ureteral calculus as an example, in order to enable a lens on a ureteroscope body to clearly acquire an image, a flushing hole on the ureteroscope body is generally required to be used for injecting flushing fluid into a ureter, for example, in the process of laser lithotripsy, the thinned calculus can be caused to move further to the upper section of the ureter along the ureter, even move into a renal pelvis or renal calyx under impact, so that the treatment effect is affected and the treatment cost is increased. To solve this problem, there are basket for placement behind the stones, which can exert functions including stone blocking and stone extracting, and a balloon for blocking the upper section of the ureter to protect the kidneys.
Currently, there are many studies on medical instruments for treating urinary system stones and the prior art, including the following patent application numbers (publication numbers): in the technical solutions disclosed in patent application documents of US4748971A, CN201410334432.6, CN201510809012.3, CN202310869331.8, CN202211425796.6, etc., urinary system stones are the most common disease species in the urinary system, and in order to promote the discharge of stones, further research on related medical instruments is necessary.
Disclosure of Invention
The invention provides a urinary system calculus promoting and discharging device and a calculus extractor, aiming at the problems of further researching the related urinary tract promoting and discharging medical appliance. The utility model has the advantages of not only effectively intercepting cracked stones, avoiding the upward movement of the stones to the ureter, but also having the characteristic of high interception reliability.
Aiming at the problems, the invention provides the urinary system calculus promoting and discharging device and the calculus extractor, which solve the problems through the following technical points: the urinary calculus promoting and discharging device comprises a guide wire, wherein an air bag and a basket wire are arranged at the front end of the guide wire, and the air bag is positioned in front of the basket wire in the length direction of the guide wire;
The guide wire is provided with an air guide hole, the air guide hole is provided with an air inlet hole positioned at the rear end of the guide wire, and the air guide hole is provided with an air outlet hole communicated with the inner side of the air bag;
The basket wires are a plurality of, and the arrangement relation among the basket wires is as follows: the wire winding guide is circumferentially arranged at intervals, the front ends of the basket wires are fixed on the fixing rings, the rear ends of the basket wires are fixed on the sliding rings, the fixing rings are fixed on the wire guide, and the sliding rings are sleeved on the wire guide and can slide along the length direction of the wire guide.
In the prior art, in the operation of promoting discharge of urinary system stones based on ureteroscope, the adopted method comprises the steps of manually taking out stones with larger particle size through a basket or other tools after stone breaking is carried out on the stones by laser under the image acquired by a lens at the front end of a ureteroscope body, and discharging the stones with smaller particle size in a way of naturally falling and flushing a urinary tract. Taking the treatment of promoting the discharge of stones in the ureter in the urinary system as an example, in order to avoid the stones from further moving to the upper section system of the ureter in the treatment process, a stone blocking device is arranged at the upper end of the stones in the existing treatment process, the common stone blocking device is a basket and an air bag, the basket generally comprises a plurality of basket wires, holes are formed between the basket wires, the stones with smaller particle sizes, which are formed by crushing, still move to the upper section of the ureter through the holes when the fluid introduced into the ureter is flushed down, the introduced fluid also increases the pressure in the kidney to a certain extent, meanwhile, the prior art discloses a scheme that a blocking film is arranged on the basket, the basket wires are used as a skeleton of the blocking film, the blocking film is opened along with the opening of the basket wires, but the opening size of the basket wires determines that the edge of the blocking film still can not be well attached to the inner wall of the ureter, the stones move to the upper section of the ureter and the problem that the stones move to the upper section of the ureter and the pressure in the kidney is increased, and a certain risk is brought to patients. The airbag is used as: after inserting the rear to the calculus, through aerifing in the gasbag, the upper segment of gasbag inflation shutoff ureter compares in the basket, and the gasbag can be better cuts the ureter, avoid calculus further to the upper segment motion of ureter and avoid introducing outside fluid to lead to the increase of intrarenal pressure, but compare in the basket, in order to ensure the trafficability characteristic of gasbag in calculus position, the gasbag should not set up thicker and harder, the calculus has the risk of lacerating the gasbag and damaging ureteral mucosa under the fluid washout, simultaneously, if through pulling the gasbag, make the calculus move down in the ureter through the thrust of gasbag to the calculus, bigger calculus is direct to contact with the gasbag also probably lead to the gasbag to be impaired, simultaneously, compare the basket, because the gasbag can not retrain the position of calculus, so this kind of method also can increase the risk that ureteral mucosa is impaired.
Aiming at the characteristics of the tool adopted for achieving the purpose of promoting the discharge of the urinary system stones in the prior art, the scheme provides a urinary system stone discharge promoting device, taking the discharge promoting treatment of the stones in the ureter as an example, the specific using method is as follows:
Firstly, a ureteroscope body tube is inserted into a ureter, and the ureteroscope body tube is provided with a conduit hole;
The catheter was treated in vitro as: the basket wires are in a straight state, the air bag is in a contracted state, the basket wires are obtained by sliding the sliding ring to one side far away from the fixed ring, the air bag is obtained by not injecting air into the air bag, meanwhile, in order to avoid the influence of wrinkles on the air bag on the trafficability of the air bag, the air bag adopts elastic materials to form the air bag body of the air bag, the air bag body is changed in size by elastic deformation under the internal and external pressure difference, the straight state of the basket wires can be obtained through a conduit, in particular, the basket wires are all or partially positioned in the conduit, the basket wires are restrained to a required form by utilizing the support provided for the basket wires on the inner side of the conduit, when the basket wires are all slid out of the conduit, the sliding ring slides to one side where the fixed ring is positioned, the basket wires recover the form and form the basket on the guide wire, other alternatives can be adopted, such as the basket wires are in a straight state under inelastic deformation, after the basket wires are inserted over stones, the front end of the conduit is utilized to push the sliding ring to move towards the fixed ring, and the basket wires are deformed to the form the basket wire;
inserting a guide wire or an assembly formed by the guide wire and a catheter into the ureter through a catheter hole, and enabling the basket wires and the air sac to be positioned on the upper side of the calculus;
removing the constraint on the basket wire or providing the constraint for the basket wire, so that the basket wire is deformed into a basket forming state, and providing gas for the air bag through the gas guide hole, so that the air bag is expanded, and the air bag can be positioned in the ureter or positioned in the renal pelvis according to the position of the calculus.
In summary, by adopting the scheme, the basket and the expanded air bag can be formed at the upper section of the ureteral calculus, and the basket is positioned between the calculus and the air bag, so that when the calculus laser lithotripter under the action of flushing fluid is implemented, as the basket is arranged at the front side of the air bag, the blocking effect exerted by the basket can prevent the lithotripter with larger particle size from directly contacting with the air bag under the action of the fluid, the aim of protecting the air bag to ensure the connection reliability of the fluid and the lithotripter is achieved, and the expansion amount of the air bag can be linearly regulated through the inflation pressure, so that the air bag can be regulated to completely block the passage above the calculus, prevent the calculus with smaller particle size from moving further to the upper end of the ureter and even to the kidney, and still exert the effect of protecting the air bag in the continuous flushing process when the calculus is discharged through the assistance of the fluid in the flushing hole on the ureteroscope body pipe after the lithotripter is implemented; when the calculus is taken out through the discharge promotion device, the basket can sleeve the gravels with larger particle sizes, so that the gravels are prevented from being greatly damaged on ureter mucous membranes in the downward movement process of the gravels, and the gravels with larger particle sizes are prevented from moving to the position of the air bag relative to the air bag and are directly contacted with the air bag to damage the air bag.
As a further technical proposal of the urinary system calculus promoting and discharging device:
This scheme needs to be followed the side of calculus when using and is guided to gasbag and basket silk and cross the calculus, for the guide wire guide of convenient implementation, sets up to: the front end of the guide wire is provided with two sections of reducing sections, the air bag is arranged on the reducing section at the front and penetrates through the air bag, the fixed ring is arranged at the front end of the reducing section at the rear, and the slip ring is sleeved on the reducing section at the rear. In this scheme, the reducing section all is used for reducing the overall dimension of basket silk, gasbag setting position on the seal wire, when the cooperation pipe is used, and the overall dimension of reducing section position department is convenient to accomodate basket silk, gasbag in the pipe entirely to make the seal wire cross the calculus position with the pipe after, with the mode of just backing back the pipe, expose basket silk and gasbag in ureter or renal pelvis.
In order to make the guide wire smoothly pass through the guide tube and run in the guide tube and move relative to the guide tube, the guide tube configured for the guide wire is preferably arranged so that the inner diameter of the guide tube is larger than the outer diameter of the guide wire, and the guide wire at the position of the air bag is limited to be positioned in the radial direction of the guide tube in the process that the guide wire moves from the head end to the front end of the guide tube, so that the aim of avoiding damage to the air bag caused by the inner wall of the guide tube is fulfilled, and the guide tube is arranged as follows: the guide wire is also provided with an expanding section, the expanding section is positioned between the two sections of reducing sections, and the side surface of the expanding section is provided with a side edge extending along the length direction of the guide wire. In the scheme, the side surface of the side edge is in contact with the inner wall of the catheter to limit the position of the guide wire at the position in the radial direction of the catheter, so that the damage to the outer wall of the air bag caused by the inner wall of the catheter in the process of moving relative to the catheter is avoided, and particularly, when the hydrophilic super-lubrication coating is arranged on the outer wall of the air bag, the hydrophilic super-lubrication coating can play a good role in protecting the coating. The side surface is used for reducing the contact area between the guide wire and the catheter so as to prevent the coating from being damaged and protected during the movement of the guide wire relative to the catheter, and preferably, the head end of the guide wire, which is positioned in front of the air bag, is also provided with a hydrophilic super-lubrication coating.
The gasbag is inflated in the gasbag through the gas vent when shutoff ureter upper segment, wherein warp to the state of shutoff ureter upper segment under the internal and external pressure differential, but as a simple structure accurate control gasbag inboard pressure in order to the technical scheme of accurate control gasbag deflection, set up to: the air supply device comprises an outlet pipe, a piston cylinder and a piston rod, wherein the front end of the piston rod is provided with a piston matched with the piston cylinder, the outlet pipe is arranged on the air outlet side of the piston cylinder, and the piston rod is in threaded connection with the inner thread arranged on the inner side of the piston cylinder through the outer thread arranged on the outer side of the piston rod. The using method of the scheme comprises the following steps: the piston on the piston rod is driven to move forwards in the piston cylinder through the piston rod, and at the moment, the inner side of the air bag can be pressurized through the outlet pipe and the air guide hole, so that the air bag can be inflated to achieve the sealing purpose, and the aim of adopting the mode that the piston rod is connected with the piston cylinder through threads is achieved: the piston rod advances in the direction of the outlet pipe in a screwing way, and when a doctor executes control of the air supply device, the advancing amount of the piston can be accurately controlled, so that the aim of accurately adjusting the deformation amount of the air bag is fulfilled; in addition, when the self-locking screw thread is adopted to finish the threaded connection, after the piston rod is loosened, the position of the piston in the piston cylinder can be stabilized by utilizing the internal screw thread and the external screw thread, and the air bag is in a pressure maintaining state.
Above scheme is when implementing, the outlet pipe can directly with the inlet port butt joint is as a convenient monitoring gasbag internal pressure stable condition, gasbag internal pressure increase condition, conveniently accomplishes the technical scheme of gasbag inboard gas injection, sets up to: the connecting pipe is a rubber pipe, the air inlet is positioned on the end face of the rear end of the guide wire, the front end of the connecting pipe is in butt joint with the rear end of the guide wire, and the rear end of the connecting pipe is in butt joint with the outlet pipe and is detachably connected; the side wall of the connecting pipe is also provided with a pore canal, and the connecting pipe further comprises a diaphragm which seals the pore canal and is an elastic membrane, and the diaphragm and the air bag are synchronously elastically deformed in the process of increasing the internal pressure of the air guide hole. In the scheme, the outlet pipe is in butt joint with the rear end of the guide wire through the connecting pipe, the connecting pipe of the rubber pipe is softer relative to the guide wire, and the connecting pipe can be well adapted to the gas injection position of the gas supply device after deformation, so that the gas supply device can complete gas injection operation at a position convenient for doctors to operate; the diaphragm is used as the boundary of the air passage communicated with the inner side of the air bag, and the diaphragm is synchronously deformed when the air passage air pressure changes, so that the pressure maintenance condition in the air bag can be judged by observing the current deformation amount of the diaphragm, and the increase condition of the air bag inner pressure can be judged by observing the current deformation speed of the diaphragm, for example, after the outer side of the air bag is contacted with the inner wall of the ureter, the air bag is more difficult to deform at the same air injection speed, and at the moment, the diaphragm can be elastically deformed at a faster speed, so that the air bag is achieved: the purpose of monitoring the maintenance of the internal pressure of the air bag and the increase of the internal pressure of the air bag is to observe the deformation of the diaphragm. Preferably, in order to facilitate observation of deformation conditions of the diaphragm and deformation of the diaphragm, the diaphragm protrudes outwards relative to the outer wall of the connecting pipe in the gas injection process to form a bulge located on the outer wall of the connecting pipe.
The scheme provides a complete set scheme which also comprises a catheter, and is specifically as follows: the catheter is characterized by further comprising a catheter, wherein the head end of the guide wire can enter the catheter from the rear end of the catheter and can extend out from the front end of the catheter after passing through the catheter, and the balloon can pass through the catheter in a contracted state;
The basket wires are made of memory alloy wires, when the slip ring slides along the guide wires in the direction away from the fixing ring, the basket wires are pulled to deform and can deform into a form capable of passing through the guide pipe, and when the basket wires extend out of the front end of the guide pipe, the basket wires recover to deform to form the basket. In this scheme, the inside diameter of pipe satisfies the gasbag of flat, can pass in the pipe, the banding basket silk can pass by the pipe in, the front end has solid fixed ring, the basket silk cooperation pipe use that the rear end has the sliding ring has following characteristics: in the process of introducing the guide wire into the catheter, the head end of the guide wire is taken as an introducing end to enter the catheter from the rear end of the catheter, the front end of the guide wire enters the catheter along with the fixing ring, the contact force between the outer side of the guide wire and the inner wall of the catheter forces the guide wire to deform to a straight state so as to reduce the outline dimension of the position of the guide wire where the guide wire is arranged, the rear end of the guide wire is synchronous with the sliding ring in the process, the guide wire moves backwards along with the deformation of the guide wire, the guide wire can also be pulled to enable the guide wire to be straight, the guide wire is fully embedded into the catheter until the guide wire is cut to a state that the head end is exposed relative to the front end of the catheter and the air bag is still positioned on the inner side of the catheter, then the guide wire passes through a catheter hole on a ureteroscope body tube, the guide wire is guided to the head end to pass through stones and the front end of the guide wire to pass through stones in a synchronous motion mode of the guide wire, the guide wire is kept to be fixed in position, the guide wire is removed from the front end of the guide wire along with the guide wire of the guide wire, the guide wire is sequentially moved out of the guide wire from the front end of the guide wire along with the guide wire, the guide wire is inflated after the guide wire is moved backwards, the guide wire is formed, after the guide wire is elastically, and the guide wire is moved out of the guide wire, and the guide wire is formed, and the guide wire is locked, and the guide wire is formed, and the guide, and can be locked, and the guide, and can be placed, and after, and has the guide, and can be locked. In this scheme, through the front end with the basket silk is fixed with the seal wire through solid fixed ring, the rear end of basket silk passes through the sliding ring and links to each other with the seal wire and the mode of position adjustable on the seal wire axis, make things convenient for the basket silk to take place corresponding deformation, make things convenient for the basket silk to imbed in the pipe and follow the front end of pipe and shift out.
To promote the deformation of the basket wires into the form of the basket, the method comprises the following steps: the expansion body is fixed on the guide wire, and is of a water-absorbing and expandable structure, and when the basket wires are pulled and deformed and can pass through the guide tube, the inner sides of the basket wires are contacted with the outer sides of the expansion body. In this scheme, when basket wire is located the pipe, the surface tension of liquid prevents that liquid from getting into the clearance between pipe and the seal wire from the front end of pipe, and after the back pipe exposes the inflation body, the inflation body absorbs water in the catheter and takes place to expand, promotes basket wire to resume to the form of formation basket.
In order to avoid the expansion body from weakening the promotion effect of the expansion body on the deformation of the basket wires due to embedding in the expansion body in the process of the expansion body absorbing water and expanding, the device is as follows: the expansion body comprises a water-absorbing expansion layer positioned on the inner side and a supporting layer positioned on the outer side, and the basket wires are supported on the supporting layer.
To facilitate the locking of the position of the guide wire in the axial direction of the catheter, it is provided that: the catheter also comprises a locking device arranged at the rear end of the catheter, wherein the locking device is used for clamping the guide wire, and the position of the guide wire on the axis of the catheter is fixed through the locking device when the locking device clamps the guide wire. Preferably, the locking device comprises a compression lock cap arranged at the rear end of the guide pipe and a locking nut in threaded connection with the compression lock cap, the rear end of the compression lock cap is provided with a plurality of notches distributed along the circumferential direction of the compression lock cap, the rear end of the compression lock cap is cone-shaped, the locking nut is in threaded connection with the compression lock cap, the clamping state of the compression lock cap to the inner guide wire is adjusted by rotating the locking nut to adjust the position of the locking nut on the axis of the compression lock cap, when the locking nut is positioned at the rear end of the compression lock cap, the rear end of the compression lock cap is opened, the guide wire can slide relative to the guide pipe at the moment, when the locking nut is rotated to enable the guide wire to move towards the front end of the compression lock cap, the rear end of the compression nut is tightened, the compression lock cap clamps the guide wire at the moment, and the position of the guide wire on the axis of the guide pipe is locked.
The utility model provides a urinary system calculus extractor, including ureteroscope mirror body pipe, the front end of ureteroscope mirror body pipe is provided with the camera lens, still is provided with flushing hole, laser fiber and illumination optic fibre in the ureteroscope mirror body pipe, still is provided with the conduit hole in the ureteroscope mirror body pipe, still includes the urinary system calculus that is provided with the pipe above and promotes the discharging device, the pipe can imbed in the conduit hole and slide in the conduit hole. The stone extractor comprises the discharge promoting device and can be a complete set product comprising the discharge promoting device.
The invention has the following beneficial effects:
According to the scheme, the basket and the expanded air bag can be formed at the upper section of the ureteral calculus, the basket is positioned between the calculus and the air bag, so that when the calculus laser lithotripter under the action of flushing fluid is implemented, the basket is arranged at the front side of the air bag, the blocking effect exerted by the basket can prevent the lithotripter with larger particle size from directly contacting with the air bag under the action of the fluid, the aim of protecting the air bag to ensure the connection reliability of the fluid and the lithotripter is achieved, the expansion amount of the air bag can be linearly regulated through the inflation pressure, the air bag can be regulated to completely block the passage above the calculus, the calculus with smaller particle size is prevented from moving further to the upper end of the ureter or even to the kidney, and after the lithotripter is implemented, the basket still plays the role of protecting the air bag in the continuous flushing process through the fluid auxiliary in the flushing hole of the ureteroscope body tube, and the air bag still plays the roles of preventing the lithotripter with smaller particle size from moving upwards and stabilizing the intrarenal pressure; when the calculus is taken out through the discharge promotion device, the basket can sleeve the gravels with larger particle sizes, so that the gravels are prevented from being greatly damaged on ureter mucous membranes in the downward movement process of the gravels, and the gravels with larger particle sizes are prevented from moving to the position of the air bag relative to the air bag and are directly contacted with the air bag to damage the air bag.
Drawings
Fig. 1 is a schematic view of a urinary system stone ejector according to an embodiment of the present invention, the schematic view being a partial cross-sectional view;
FIG. 2 is a schematic view of a urinary system stone removal device according to an embodiment of the present invention, the schematic view being a partial cross-sectional view, the balloon being in an inflated state, and the basket wires being in a basket-forming state, different from the structure shown in FIG. 1;
FIG. 3 is a schematic view of a urinary system stone evacuation device according to an embodiment of the present disclosure, the schematic view being a partial cross-sectional view and showing only the structure associated with the rear end of the guide wire;
Fig. 4 is a schematic structural view of an embodiment of a urinary calculus removal device according to the present embodiment, which is a partial sectional view and shows only the related structure of the rear end of a guide wire, unlike the structure shown in fig. 3, in which an air supply device is connected to the rear end of the guide wire through a connection tube, and a diaphragm is in a deformed state under internal pressure;
Fig. 5 is a front view showing the structure of the front end of an embodiment of a urinary system stone extractor according to the present embodiment.
Reference numerals in the drawings are respectively: 1. the head end, 2, the air sac, 3, the expanding section, 4, the fixing ring, 5, the basket wires, 6, the expansion body, 7, the reducing section, 8, the slip ring, 9, the guide wire, 10, the guide pipe, 11 and the air guide hole,
12. The device comprises a connecting pipe, 13, a diaphragm, 14, an outlet pipe, 15, a piston cylinder, 16, a piston rod, 17, a ureteroscope body pipe, 18, an illumination optical fiber, 19, a flushing hole, 20, a lens, 21, a laser optical fiber, 22 and a catheter hole.
Detailed Description
The present invention will be described in further detail with reference to the following examples, but the present invention is not limited to the following examples:
Example 1:
as shown in fig. 1 to 5, the urinary calculus promoting and discharging device comprises a guide wire 9, wherein the front end of the guide wire 9 is provided with an air bag 2 and a basket wire 5, and the air bag 2 is positioned in front of the basket wire 5 in the length direction of the guide wire 9;
the air guide wire 9 is provided with an air guide hole 11, the air guide hole 11 is provided with an air inlet hole positioned at the rear end of the air guide wire 9, and the air guide hole 11 is provided with an air outlet hole communicated with the inner side of the air bag 2;
the basket wires 5 are a plurality of, and the arrangement relation among the basket wires 5 is as follows: the front ends of the basket wires 5 are fixed on the fixing rings 4, the rear ends of the basket wires 5 are fixed on the sliding rings 8, the fixing rings 4 are fixed on the guide wires 9, and the sliding rings 8 are sleeved on the guide wires 9 and can slide along the length direction of the guide wires 9.
In the prior art, in the operation of promoting discharge of urinary system stones based on ureteroscope, the adopted method comprises the steps of manually taking out stones with larger particle size through a basket or other tools after stones are crushed by laser under the image acquired by the lens 20 at the front end of the ureteroscope body tube 17, and discharging the stones with smaller particle size in a mode of naturally falling and flushing the urinary tract. Taking the treatment of promoting the discharge of stones in ureters in the urinary system as an example, in order to avoid the stones in the treatment process from further moving to the upper section system of the ureters, a stone blocking device is arranged at the upper end of the stones in the existing treatment process, the common stone blocking device is a basket and an air bag 2, the basket generally comprises a plurality of basket wires 5, holes are formed between the basket wires 5, the stones with smaller particle sizes, which are formed by crushing, still move to the upper section of the ureters through the holes when the fluid introduced into the ureters is flushed down, the introduced fluid also increases the pressure in the kidneys to a certain extent, meanwhile, the prior art discloses a scheme that a blocking film is arranged on the basket, the basket wires 5 serve as a framework of the blocking film, the blocking film is opened along with the opening of the basket wires 5, but the opened size of the basket wires 5 determines that the edge of the blocking film still cannot be well attached to the inner wall of the ureters, the stones move to the upper section of the ureters and the pressure in the kidneys is increased, and a certain risk is provided for patients. The airbag 2 is used as: after the ureter is inserted into the rear part of the calculus, the upper section of the ureter is plugged by the expansion of the air bag 2 through the inflation of the air bag 2, compared with a basket, the air bag 2 can better cut off the ureter, the calculus is prevented from moving further to the upper section of the ureter, the introduced external fluid is prevented from causing the increase of the intrarenal pressure, but compared with the basket, the air bag 2 is not required to be thicker and harder in order to ensure the trafficability of the air bag 2 at the position of the calculus, the calculus is at risk of scratching the air bag 2 and damaging the mucous membrane of the ureter under the flushing of the fluid, meanwhile, if the calculus moves downwards in the ureter due to the thrust of the air bag 2 to the calculus, the larger calculus is directly contacted with the air bag 2, so that the air bag 2 is possibly damaged, and meanwhile, compared with the basket, the position of the calculus cannot be restrained by the air bag 2, the method also increases the risk of damaging the mucous membrane of the ureter.
Aiming at the characteristics of the tool adopted for achieving the purpose of promoting the discharge of the urinary system stones in the prior art, the scheme provides a urinary system stone discharge promoting device, taking the discharge promoting treatment of the stones in the ureter as an example, the specific using method is as follows:
Firstly, a ureteroscope body tube 17 is inserted into a ureter, and the ureteroscope body tube 17 is provided with a conduit hole 22;
The catheter 10 is treated ex vivo as: the basket wires 5 are in a straight state, the air bag 2 is in a contracted state, the state of the basket wires 5 is obtained by sliding the slip ring 8 to the side far away from the fixed ring 4, the state of the air bag 2 is obtained by not injecting air into the air bag 2, meanwhile, in order to avoid the influence of wrinkles on the air bag 2 on the trafficability of the air bag 2, the air bag 2 adopts elastic materials to form a bag body of the air bag 2, the bag body is changed in size by elastic deformation under the internal and external pressure difference, the straight state of the basket wires 5 can be obtained through a conduit 10, in particular, the basket wires 5 are all or partially positioned in the conduit 10, the basket wires 5 are restrained to a required shape by utilizing the support provided by the inner side of the conduit 10 for the basket wires 5, when the basket wires 5 are all slid out of the conduit 10, the slip ring 8 slides to the side where the fixed ring 4 is positioned, the basket wires 5 recover the shape and form a basket on the guide wire 9, and of course, other alternatives such as the basket wires 5 are in a straight state under inelastic deformation, after the basket wires 5 are inserted into the conduit 10, the basket wires are pushed out of the slip ring 8 by the slip ring 8, and the basket wires 5 are deformed in the direction of the fixed ring 8;
Inserting a guide wire 9 or an assembly of the guide wire 9 and a catheter 10 into the ureter through a catheter hole 22, and enabling the basket wires 5 and the air sac 2 to be positioned on the upper side of the calculus;
The constraint on the basket wire 5 is removed or the basket wire 5 is provided, so that the basket wire 5 is deformed into a basket forming state, and gas is provided for the air bag 2 through the gas guide holes 11, so that the air bag 2 is inflated, and the air bag 2 can be positioned in a ureter or a renal pelvis according to the position of a calculus.
In summary, by adopting the scheme, the basket and the expanded air bag 2 can be formed at the upper section of ureteral calculus, and the basket is positioned between the calculus and the air bag 2, so when the calculus laser lithotripter under the action of flushing fluid is implemented, as the basket is arranged at the front side of the air bag 2, the blocking effect exerted by the basket can prevent the lithotripter with larger particle size from directly contacting with the air bag 2 under the action of the fluid, thereby achieving the purpose of protecting the air bag 2 to ensure the connection reliability of the fluid and the lithotripter, and the expansion amount of the air bag 2 can be linearly regulated through the inflation pressure, so that the air bag 2 can be regulated to completely block the passage above the calculus, prevent the calculus with smaller particle size from further moving to the upper end of the ureter and even the kidney, and still exert the effect of protecting the air bag 2 in the continuous flushing process when the calculus is discharged through the assistance of the fluid in the flushing hole 19 on the ureteroscope body tube 17 after the lithotripter is carried out, and the air bag 2 still exerts the effect of preventing the upward movement of the lithotripter with smaller particle size and stabilizing the intrarenal pressure; when the calculus is taken out through this device that promotes discharge, the basket can entangle the great rubble of particle diameter to avoid rubble to move down the in-process and cause great damage to ureter mucosa, and avoid the great rubble of particle diameter to remove to gasbag 2 position and with gasbag 2 direct contact and damage gasbag 2 for gasbag 2, this scheme can apply to calculus and promote discharge and handle and calculus and take out.
Example 2:
This example was further refined on the basis of example 1:
This scheme needs to be followed the side of calculus when using and guided wire 9 to gasbag 2 and basket silk 5 cross the calculus, for the guide wire 9 guide of convenient implementation, sets up to: the front end of the guide wire 9 is provided with two sections of reducing sections 7, the air bag 2 is arranged on the reducing section 7 at the front and the reducing section 7 penetrates through the air bag 2, the fixing ring 4 is arranged at the front end of the reducing section 7 at the rear, and the slip ring 8 is sleeved on the reducing section 7 at the rear. In this scheme, reducing section 7 all is used for reducing the overall dimension of wire basket 5, gasbag 2 setting position on wire guide 9, and when the cooperation pipe 10 uses, the overall dimension of reducing section 7 position department is convenient with wire basket 5, gasbag 2 all accomodate in pipe 10 to make wire guide 9 pass the calculus position along with pipe 10 after, with the mode of just backing back pipe 10, expose wire basket 5 and gasbag 2 in the ureter or in the renal pelvis.
Example 3:
this example was further refined on the basis of example 2:
In order to make the guide wire 9 smoothly pass through the guide tube 10 and run in the guide tube 10 and move relative to the guide tube 10, the guide tube 10 configured for the guide wire 9 is preferably set to have an inner diameter larger than an outer diameter of the guide wire 9, and in the process that the guide wire 9 moves further from the head end 1 to the front end of the guide tube 10, the guide wire 9 at the position of the limiting balloon 2 is positioned in the radial direction of the guide tube 10, so as to achieve the purpose of avoiding damage to the balloon 2 caused by the inner wall of the guide tube 10, and the guide tube is set as follows: the guide wire 9 is further provided with an expanding section 3, the expanding section 3 is located between the two reducing sections 7, and the side face of the expanding section 3 is provided with a side edge extending along the length direction of the guide wire 9. In the scheme, the side surface of the side edge is in contact with the inner wall of the catheter 10 to limit the position of the guide wire 9 in the radial direction of the catheter 10 at the position, so that the damage to the outer wall of the air bag 2 caused by the inner wall of the catheter 10 in the process of moving relative to the catheter 10 of the guide wire 9 is avoided, and particularly, when a hydrophilic super-lubrication coating is arranged on the outer wall of the air bag 2, the hydrophilic super-lubrication coating can play a good role in protecting the coating. The sides serve to reduce the contact area of the guide wire 9 with the catheter 10 for protection against damage to the coating during movement of the guide wire 9 relative to the catheter 10, preferably the guide wire 9 is also provided with a hydrophilic super-lubricious coating on the head end 1 in front of the balloon 2.
Example 4:
This example was further refined on the basis of example 1:
The gasbag 2 is when shutoff ureter upper segment through the gas vent 11 aerifys in to gasbag 2, wherein warp to the state of shutoff ureter upper segment under inside and outside pressure differential, but as a simple structure accurate control gasbag 2 inboard pressure in order to accurate control gasbag 2 deflection's technical scheme, set up to: the air supply device for supplying compressed air to the air bag 2 comprises an outlet pipe 14, a piston cylinder 15 and a piston rod 16, wherein the front end of the piston rod 16 is provided with a piston matched with the piston cylinder 15, the outlet pipe 14 is arranged on the air outlet side of the piston cylinder 15, and the piston rod 16 is in threaded connection with the inner thread arranged on the inner side of the piston cylinder 15 through the outer thread arranged on the outer side of the piston rod. The using method of the scheme comprises the following steps: the piston on the air bag 2 is driven to move forwards in the piston cylinder 15 through the piston rod 16, and at the moment, the inner side of the air bag 2 can be pressurized through the outlet pipe 14 and the air guide hole 11, so that the air bag 2 is expanded to achieve the sealing purpose, and the aim of adopting the mode that the piston rod 16 is connected with the piston cylinder 15 through threads is that: the piston rod 16 advances in the direction of the outlet pipe 14 in a screwing way, so that a doctor can accurately control the advancing amount of the piston when performing air supply device control, and the purpose of accurately adjusting the deformation amount of the air bag 2 is achieved; in addition, when the threaded connection is completed by adopting the self-locking thread, after the piston rod 16 is loosened, the position of the piston in the piston cylinder 15 can be stabilized by utilizing the internal thread and the external thread, and the air bag 2 is in a pressure maintaining state.
Example 5:
this example was further refined on the basis of example 4:
When the scheme is implemented, the outlet pipe 14 can be directly in butt joint with the air inlet hole, and the technical scheme is used for conveniently monitoring the stable condition of the internal pressure of the air bag 2, the increase condition of the internal pressure of the air bag 2 and conveniently completing the injection of the gas at the inner side of the air bag 2, and is set as follows: the device further comprises a connecting pipe 12, wherein the connecting pipe 12 is a rubber pipe, the air inlet is positioned on the end face of the rear end of the guide wire 9, the front end of the connecting pipe 12 is in butt joint with the rear end of the guide wire 9, and the rear end of the connecting pipe 12 is in butt joint with the outlet pipe 14 and is in detachable connection; the side wall of the connecting pipe 12 is also provided with a pore canal, and the connecting pipe further comprises a membrane 13 which seals the pore canal and is an elastic membrane, and the membrane 13 and the air bag 2 are synchronously elastically deformed in the process of increasing the internal pressure of the air guide hole 11. In the scheme, the outlet pipe 14 is in butt joint with the rear end of the guide wire 9 through the connecting pipe 12, the connecting pipe 12 of the rubber pipe is softer relative to the guide wire 9, and the connecting pipe 12 can be well adapted to the gas injection position of the gas supply device after being deformed, so that the gas supply device can complete gas injection operation at a position convenient for doctors to operate; the membrane 13 serves as a boundary of an air passage communicated with the inner side of the air bag 2, when the air pressure of the air passage changes, the membrane 13 deforms synchronously, so that the pressure maintenance condition in the air bag 2 can be judged by observing the current deformation amount of the membrane 13, the internal pressure increase condition of the air bag 2 can be judged by observing the current deformation speed of the membrane 13, for example, after the outer side of the air bag 2 contacts with the inner wall of a ureter, the air bag 2 deforms more difficultly at the same air injection speed, and at the moment, faster elastic deformation can occur on the membrane 13, so that the following aims are achieved: the purpose of monitoring the maintenance of the internal pressure of the airbag 2 and the increase of the internal pressure of the airbag 2 is to observe the deformation of the diaphragm 13. Preferably, in order to facilitate observation of the deformation condition of the diaphragm 13 and the deformation amount of the diaphragm 13, during the gas injection process, the diaphragm 13 protrudes outwards relative to the outer wall of the adapter 12 to form a bulge located on the outer wall of the adapter 12.
Example 6:
This example was further refined on the basis of example 1:
The present solution provides a kit further comprising a catheter 10, in particular: further comprising a catheter 10, the head end 1 of the guide wire 9 being accessible from the rear end of the catheter 10 to the catheter 10 and being extendable from the front end of the catheter 10 after passing through the catheter 10, the balloon 2 being able to pass through the catheter 10 in a contracted state;
The basket wires 5 are memory alloy wires, when the slip ring 8 slides along the guide wires 9 in a direction away from the fixed ring 4, the basket wires 5 are pulled and deformed and can pass through the guide tube 10, and when the basket wires 5 extend out of the front end of the guide tube 10, the basket wires 5 are restored to deform to form the basket. In this scheme, the inside diameter of pipe 10 satisfies the gasbag 2 that is shrunken can pass, the banding basket silk 5 can pass by pipe 10 in, and the front end has solid fixed ring 4, the basket silk 5 that the rear end has sliding ring 8 cooperates pipe 10 to use has following characteristics: in the process of introducing the guide wire 9 into the catheter 10, the head end 1 of the guide wire 9 serves as an introduction end to enter the catheter 10 from the rear end of the catheter 10, for the guide wire 5, the front end of the guide wire 5 enters the catheter 10 along with the fixing ring 4, the contact force between the outer side of the guide wire 5 and the inner wall of the catheter 10 forces the guide wire 5 to deform to a straight state so as to reduce the outline dimension of the guide wire 9 where the guide wire 9 is arranged at the position of the guide wire 5, in the process, the rear end of the guide wire 5 is synchronous with the sliding ring 8, and moves along with the deformation of the guide wire 5, or alternatively, the sliding ring 8 is adopted to enable the guide wire 5 to be straight, then the guide wire 9 is inserted into the catheter 10 completely, until the head end 1 is exposed relative to the front end of the catheter 10, the air bag 2 is still located at the inner side of the catheter 10, then the guide wire 10 is guided to the catheter 10 to pass through the catheter hole 22 on the catheter tube 17 in a way that the catheter 10 and the catheter 10 moves synchronously with the guide wire 9, at this moment, the head end 1 passes over the calculus, the front end of the guide wire 10 and the guide wire 5 passes over the guide wire 9, the guide wire 5 is kept to be fixed along with the position of the guide wire 5, the guide wire 5 is moved back along with the deformation of the guide wire 5, after the guide wire 5, the guide wire 5 is locked to the guide wire 5 is sequentially, and is moved out of the guide wire 5, and is sequentially, and is moved out of the guide wire 5 after the guide wire 5 is in a shape and is inflated, and is moved out of the guide wire 5, and is in a shape and is in front of an elastic shape after the guide wire is formed. In this scheme, through the front end with basket wire 5 pass through solid fixed ring 4 and guide wire 9 fixed, the rear end of basket wire 5 passes through slide ring 8 and guide wire 9 links to each other and the mode of position adjustable on the guide wire 9 axis, make things convenient for basket wire 5 to take place corresponding deformation, make things convenient for basket wire 5 to imbed in pipe 10 and follow pipe 10's front end to shift out.
Example 7:
This example was further refined on the basis of example 6:
To facilitate the deformation of the basket wires 5 into the basket-forming configuration, it is provided that: the inflatable body 6 is fixed on the guide wire 9, the inflatable body 6 is of a water-absorbing inflatable structure, and when the basket wires 5 are pulled and deformed to a form capable of passing through the catheter 10, the inner sides of the basket wires 5 are contacted with the outer sides of the inflatable body 6. In this solution, when the basket wire 5 is located in the catheter 10, the surface tension of the liquid prevents the liquid from entering the gap between the catheter 10 and the guide wire 9 from the front end of the catheter 10, and after the back-pumping catheter 10 exposes the expansion body 6, the expansion body 6 absorbs water in the catheter to expand, so as to promote the recovery of the basket wire 5 to the form of the basket.
Example 8:
This example was further refined on the basis of example 7:
In order to avoid that the basket wires 5 weaken the promotion effect of the expansion body 6 on the deformation of the basket wires 5 due to embedding into the expansion body 6 in the process of the expansion body 6 absorbing water and expanding, the method is as follows: the expansion body 6 comprises a water-absorbing expansion layer on the inner side and a supporting layer on the outer side, and the basket wires 5 are supported on the supporting layer.
Example 9:
This example was further refined on the basis of example 6:
to facilitate the locking of the position of the guide wire 9 in the axial direction of the catheter 10, it is provided that: further comprising locking means arranged at the rear end of the catheter 10 for clamping the guide wire 9 and by means of which the position of the guide wire 9 on the axis of the catheter 10 is fixed when the locking means clamp the guide wire 9. Preferably, the locking device comprises a compression lock cap arranged at the rear end of the guide pipe 10 and a locking nut in threaded connection with the compression lock cap, the rear end of the compression lock cap is provided with a plurality of notches distributed along the circumferential direction of the compression lock cap, the rear end of the compression lock cap is cone-shaped, the locking nut is in threaded connection with the compression lock cap, the position of the locking nut on the axis of the compression lock cap is adjusted through rotating the locking nut, so that the clamping state of the compression lock cap on the inner guide wire 9 is adjusted, when the locking nut is positioned at the rear end of the compression lock cap, the rear end of the compression lock cap is opened, the guide wire 9 can slide relative to the guide pipe 10 at the moment, when the locking nut is rotated to enable the locking nut to move towards the front end of the compression lock cap, the rear end of the compression nut is tightened, the compression lock cap clamps the guide wire 9 at the moment, and the position of the guide wire 9 on the axis of the guide pipe 10 is locked.
Example 10:
This embodiment provides a urinary calculus extractor based on embodiments 6 to 9, including a ureteroscope body tube 17, a lens 20 is disposed at the front end of the ureteroscope body tube 17, a flushing hole 19, a laser fiber 21 and an illumination fiber 18 are further disposed in the ureteroscope body tube 17, a catheter hole 22 is further disposed in the ureteroscope body tube 17, and a urinary calculus removing device including the catheter 10 is further disposed as above, and the catheter 10 can be inserted into the catheter hole 22 and slide in the catheter hole 22. The stone extractor comprises the discharge promoting device and can be a complete set product comprising the discharge promoting device.
The foregoing is a further detailed description of the invention in connection with specific preferred embodiments, and it is not intended that the invention be limited to these descriptions. Other embodiments of the invention, which are apparent to those skilled in the art to which the invention pertains without departing from its technical scope, shall be covered by the protection scope of the invention.

Claims (10)

1. The urinary calculus promoting and discharging device comprises a guide wire (9), and is characterized in that an air bag (2) and a basket wire (5) are arranged at the front end of the guide wire (9), and the air bag (2) is positioned in front of the basket wire (5) in the length direction of the guide wire (9);
The air guide wire (9) is provided with an air guide hole (11), the air guide hole (11) is provided with an air inlet hole positioned at the rear end of the air guide wire (9), and the air guide hole (11) is provided with an air outlet hole communicated with the inner side of the air bag (2);
The basket wires (5) are multiple, and the arrangement relation among the basket wires (5) is as follows: around circumference direction interval arrangement of seal wire (9), the front end of each basket silk (5) is all fixed in fixed ring (4), and the rear end of each basket silk (5) is all fixed in on sliding ring (8), fixed ring (4) are fixed in on seal wire (9), sliding ring (8) cover is established on seal wire (9) and can be along the length direction slip of seal wire (9).
2. Urinary calculus removal promoting device according to claim 1, wherein the front end of the guide wire (9) is provided with two reduced diameter sections (7), the balloon (2) is mounted on the reduced diameter section (7) at the front and the reduced diameter section (7) passes through the balloon (2), the fixing ring (4) is mounted on the front end of the reduced diameter section (7) at the rear, and the slip ring (8) is sleeved on the reduced diameter section (7) at the rear.
3. Urinary calculus removal promoting device according to claim 2, wherein the guide wire (9) is further provided with an expanded diameter section (3), the expanded diameter section (3) is located between two reduced diameter sections (7), and the side surface of the expanded diameter section (3) is provided with a side edge extending along the length direction of the guide wire (9).
4. Urinary calculus removal promoting device according to claim 1, further comprising a gas supply device for supplying compressed gas to the balloon (2), said gas supply device comprising an outlet tube (14), a piston cylinder (15) and a piston rod (16), the front end of said piston rod (16) having a piston cooperating with the piston cylinder (15), said outlet tube (14) being arranged on the gas outlet side of the piston cylinder (15), said piston rod (16) being in threaded connection with an internal thread provided on the inside of the piston cylinder (15) by means of an external thread provided on the outside thereof.
5. The urinary calculus removal promoting device according to claim 4, further comprising a connection tube (12), wherein the connection tube (12) is a rubber tube, the air inlet hole is located on the end face of the rear end of the guide wire (9), the front end of the connection tube (12) is in butt joint with the rear end of the guide wire (9), and the rear end of the connection tube (12) is in butt joint with the outlet tube (14) and is detachably connected; the side wall of the connecting pipe (12) is also provided with a pore canal, and the connecting pipe further comprises a membrane (13) which seals the pore canal and is an elastic membrane, and the membrane (13) and the air bag (2) are synchronously elastically deformed in the process of increasing the internal pressure of the air guide hole (11).
6. A urinary calculus stimulating discharge device according to claim 1, further comprising a catheter (10), wherein the head end (1) of the guide wire (9) is insertable into the catheter (10) from the rear end of the catheter (10) and is extendable out of the front end of the catheter (10) after passing through the catheter (10), and wherein the balloon (2) is insertable through the catheter (10) in a contracted state;
The basket wires (5) are memory alloy wires, when the slip ring (8) slides along the guide wires (9) in the direction away from the fixed ring (4), the basket wires (5) are pulled to deform and can deform into a form capable of passing through the guide pipe (10), and when the basket wires (5) extend out from the front end of the guide pipe (10), the basket wires (5) recover to deform into a form of forming a basket.
7. The urinary calculus removal device of claim 6 further comprising an expansion body (6) secured to the guidewire (9), the expansion body (6) being of a water-absorbing expandable structure, the inner side of the basket wire (5) contacting the outer side of the expansion body (6) when the basket wire (5) is deformed by pulling into a configuration that allows passage through the catheter (10).
8. Urinary calculus removal promoting device according to claim 7, wherein the expansion body (6) comprises an inner water-absorbing expansion layer and an outer support layer, on which the basket wires (5) are supported.
9. A urinary calculus stimulating discharge device according to claim 6, further comprising locking means provided at the rear end of the catheter (10) for holding the guide wire (9), and wherein the position of the guide wire (9) on the axis of the catheter (10) is fixed by the locking means when the locking means holds the guide wire (9).
10. The utility model provides a urinary system calculus extractor, includes ureteroscope mirror body pipe (17), the front end of ureteroscope mirror body pipe (17) is provided with camera lens (20), still is provided with in ureteroscope mirror body pipe (17) and washes hole (19), laser fiber (21) and illumination optic fibre (18), still is provided with in ureteroscope mirror body pipe (17) duct hole (22), its characterized in that still includes the urinary system calculus and promotes discharging device of claim 6 to 9, duct (10) can imbed in duct hole (22) and slide in duct hole (22).
CN202410569202.1A 2024-05-09 2024-05-09 Urinary system calculus discharge promoting device and calculus extractor Active CN118141471B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202410569202.1A CN118141471B (en) 2024-05-09 2024-05-09 Urinary system calculus discharge promoting device and calculus extractor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202410569202.1A CN118141471B (en) 2024-05-09 2024-05-09 Urinary system calculus discharge promoting device and calculus extractor

Publications (2)

Publication Number Publication Date
CN118141471A true CN118141471A (en) 2024-06-07
CN118141471B CN118141471B (en) 2024-07-12

Family

ID=91299040

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202410569202.1A Active CN118141471B (en) 2024-05-09 2024-05-09 Urinary system calculus discharge promoting device and calculus extractor

Country Status (1)

Country Link
CN (1) CN118141471B (en)

Citations (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040106973A1 (en) * 2001-02-16 2004-06-03 Johnson Eric G Balloon catheter stent delivery system with ridges
US20060074437A1 (en) * 2004-10-06 2006-04-06 Scimed Life Systems, Inc. Medical retrieval device
WO2006038247A1 (en) * 2004-10-08 2006-04-13 Mario Immacolato Paternuosto Pneumobasket for capturing and removing choledocus stones
CN101711699A (en) * 2009-09-28 2010-05-26 常实 Multifunctional biliary tract stone extraction basket
CN104095667A (en) * 2014-07-15 2014-10-15 中国人民解放军第二军医大学 Covered basket type ureteral calculus blockage extractor
CN205514821U (en) * 2016-02-02 2016-08-31 江阴宝易德医疗科技有限公司 Super -elasticity basket formula stream of people ware
US20160256179A1 (en) * 2015-03-04 2016-09-08 Gyrus Acmi, Inc., D.B.A. Olympus Surgical Technologies America Medical device for capturing stone fragments
CN106491180A (en) * 2016-12-29 2017-03-15 李文 A kind of calculus of basket branch equipped with sacculus takes out operating theater instruments
CN107714142A (en) * 2017-11-11 2018-02-23 宋勇 A kind of portable choledochoscope
CN108577930A (en) * 2018-02-09 2018-09-28 大连大学 Cup-shaped stone extraction basket with sacculus
CN211325910U (en) * 2019-12-04 2020-08-25 孔翎 Neonate is clinical with bronchus strutting arrangement
CN211355717U (en) * 2019-08-23 2020-08-28 上海复堂生物科技有限公司 Visual laser rubble stone-taking net basket
CN212015706U (en) * 2020-03-05 2020-11-27 昆明医科大学第二附属医院 Ureter calculus removing device for urological surgery with plugging function
CN212037706U (en) * 2020-03-19 2020-12-01 广州中医药大学第一附属医院 Femoral head filling bone grafting expanding and forming device capable of monitoring intraosseous pressure
CN213850619U (en) * 2020-09-18 2021-08-03 象山县第一人民医院医疗健康集团 Bronchoscope device with pressure sensing function
CN214966297U (en) * 2021-01-11 2021-12-03 重庆市合川区中医院 Hepatobiliary surgery stone extraction device
CN114053498A (en) * 2021-12-20 2022-02-18 北京医院 Urine leakage prevention catheter capable of being regulated and controlled independently
CN217219138U (en) * 2022-03-25 2022-08-19 上海市东方医院（同济大学附属东方医院） Stone-taking net bag
CN115192283A (en) * 2022-09-19 2022-10-18 艾柯医疗器械(北京)股份有限公司 Stent conveying system and stent system comprising same
CN115737064A (en) * 2022-11-29 2023-03-07 广东药科大学附属第一医院 Stone-fetching net basket convenient for fetching stone
CN115969514A (en) * 2022-12-14 2023-04-18 深圳泰睿仕医疗科技有限公司 Novel plugging calculus removing catheter

Patent Citations (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040106973A1 (en) * 2001-02-16 2004-06-03 Johnson Eric G Balloon catheter stent delivery system with ridges
US20060074437A1 (en) * 2004-10-06 2006-04-06 Scimed Life Systems, Inc. Medical retrieval device
WO2006038247A1 (en) * 2004-10-08 2006-04-13 Mario Immacolato Paternuosto Pneumobasket for capturing and removing choledocus stones
CN101711699A (en) * 2009-09-28 2010-05-26 常实 Multifunctional biliary tract stone extraction basket
CN104095667A (en) * 2014-07-15 2014-10-15 中国人民解放军第二军医大学 Covered basket type ureteral calculus blockage extractor
US20160256179A1 (en) * 2015-03-04 2016-09-08 Gyrus Acmi, Inc., D.B.A. Olympus Surgical Technologies America Medical device for capturing stone fragments
CN205514821U (en) * 2016-02-02 2016-08-31 江阴宝易德医疗科技有限公司 Super -elasticity basket formula stream of people ware
CN106491180A (en) * 2016-12-29 2017-03-15 李文 A kind of calculus of basket branch equipped with sacculus takes out operating theater instruments
CN107714142A (en) * 2017-11-11 2018-02-23 宋勇 A kind of portable choledochoscope
CN108577930A (en) * 2018-02-09 2018-09-28 大连大学 Cup-shaped stone extraction basket with sacculus
CN211355717U (en) * 2019-08-23 2020-08-28 上海复堂生物科技有限公司 Visual laser rubble stone-taking net basket
CN211325910U (en) * 2019-12-04 2020-08-25 孔翎 Neonate is clinical with bronchus strutting arrangement
CN212015706U (en) * 2020-03-05 2020-11-27 昆明医科大学第二附属医院 Ureter calculus removing device for urological surgery with plugging function
CN212037706U (en) * 2020-03-19 2020-12-01 广州中医药大学第一附属医院 Femoral head filling bone grafting expanding and forming device capable of monitoring intraosseous pressure
CN213850619U (en) * 2020-09-18 2021-08-03 象山县第一人民医院医疗健康集团 Bronchoscope device with pressure sensing function
CN214966297U (en) * 2021-01-11 2021-12-03 重庆市合川区中医院 Hepatobiliary surgery stone extraction device
CN114053498A (en) * 2021-12-20 2022-02-18 北京医院 Urine leakage prevention catheter capable of being regulated and controlled independently
CN217219138U (en) * 2022-03-25 2022-08-19 上海市东方医院（同济大学附属东方医院） Stone-taking net bag
CN115192283A (en) * 2022-09-19 2022-10-18 艾柯医疗器械(北京)股份有限公司 Stent conveying system and stent system comprising same
CN115737064A (en) * 2022-11-29 2023-03-07 广东药科大学附属第一医院 Stone-fetching net basket convenient for fetching stone
CN115969514A (en) * 2022-12-14 2023-04-18 深圳泰睿仕医疗科技有限公司 Novel plugging calculus removing catheter

Also Published As

Publication number Publication date
CN118141471B (en) 2024-07-12

Similar Documents

Publication Publication Date Title
US5437644A (en) Method and apparatus for replacing a cannula
US5311858A (en) Imaging tissue or stone removal basket
US8979916B2 (en) Apparatus for delivery and deployment of an expandable stent within a blood vessel
EP0804903A2 (en) Endoscopic inflatable retraction devices and method of making
US5271383A (en) Method for reducing intussusception
HK1033811A1 (en) Apparatus for performing surgery inside the human retina using fluidic internal limiting membrane (ilm) separation (films)
CN100382858C (en) Apparatus for treating ureter and/or pyeol-ureter junction
CN109938811B (en) Minimally invasive visual expansion suction sheath
JP2009542302A (en) Collecting sheath and method of using the same
CN118141471B (en) Urinary system calculus discharge promoting device and calculus extractor
CN105852941B (en) Sucker shape foreign bodies in airway extractor
CN219306788U (en) Sheath placing device
CN210903227U (en) Hepatobiliary surgery stone extractor
CN116269543A (en) Sheath placement device and application method thereof
CN213552139U (en) Iliac femoral vein thrombus clearing device
CN212037465U (en) Endoscope head insertion protection device
CN113855124A (en) Inflatable abdominal wall retractor for laparoscope
CN210871493U (en) Combined uretero-nephroscope
DE102017118667B3 (en) Medical endoscopy system for the recovery of concrements
CN110840392A (en) Endoscope head insertion protection device
CN204683552U (en) Ureteroscope bladder depressurized system
CN219814232U (en) Self-expanding umbrella-shaped tectorial membrane thrombus taking device
CN203576633U (en) Urinary bladder calculus removing endoscope with calculus crushing end sealable
CN210931681U (en) Multifunctional visible craniocerebral artificial device
CN210472761U (en) Ureteroscope operation negative pressure drainage tube

Legal Events

Date Code Title Description
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant