WO2024104040A1 - Urétéroscope combiné courbé, urétéroscope et corps principal d'urétéroscope - Google Patents

Urétéroscope combiné courbé, urétéroscope et corps principal d'urétéroscope Download PDF

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Publication number
WO2024104040A1
WO2024104040A1 PCT/CN2023/125142 CN2023125142W WO2024104040A1 WO 2024104040 A1 WO2024104040 A1 WO 2024104040A1 CN 2023125142 W CN2023125142 W CN 2023125142W WO 2024104040 A1 WO2024104040 A1 WO 2024104040A1
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WO
WIPO (PCT)
Prior art keywords
channel
ureteroscope
sheath
inner core
guide
Prior art date
Application number
PCT/CN2023/125142
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English (en)
Chinese (zh)
Inventor
方立
程跃
谢国海
胡嘉盛
严泽军
Original Assignee
宁波大学附属第一医院
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
Priority claimed from CN202211439820.1A external-priority patent/CN116019413A/zh
Priority claimed from CN202211440003.8A external-priority patent/CN115715664A/zh
Application filed by 宁波大学附属第一医院 filed Critical 宁波大学附属第一医院
Publication of WO2024104040A1 publication Critical patent/WO2024104040A1/fr

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Classifications

    • 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
    • A61B1/008—Articulations
    • 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
    • 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

Definitions

  • the invention relates to the field of medical instruments, and in particular to a curved combined ureteroscope, a ureteroscope and a ureteroscope body.
  • the ureteroscope and guide sheath are separate instruments with different models, there is a situation where the ureteroscope and guide sheath are not compatible. If a combination with a larger scope-sheath ratio (the ratio of the outer diameter of the ureteroscope to the inner diameter of the guide sheath) is selected, it is easy to cause high pressure in the renal pelvis, thereby leading to worsening infection or serious complications such as renal rupture and bleeding.
  • the ureter is a pipe system connected to the outside world through the bladder and urethra, which provides us with a natural channel for inspection and treatment through the ureteral system.
  • Ureteroscopy enters from the urethral opening, passes through the patient's urethra and bladder, and then enters the ureter for inspection and treatment, which greatly improves the diagnosis and treatment level of ureteral diseases and achieves satisfactory clinical results.
  • the existing ureteroscope is a medical device composed of a light source, a camera and a variety of working accessories. It usually has a drainage channel and a water inlet channel. The drainage channel forms a negative pressure environment to discharge water and gravel. Therefore, the existing ureteroscope has a large stone discharge channel and requires a large suction force. On the one hand, this structure causes the existing ureteroscope to be too thick and not easy to put into the ureter, which brings many inconveniences to the diagnosis and treatment of ureteral diseases. On the other hand, the large suction force also brings some problems to use.
  • Another advantage of the present invention is that it provides a curved combined ureteroscope, which can perform laser lithotripsy through the working channel of the inner core, and at the same time use the gap between the curved sheath and the inner core for suction, so as to achieve the effect of crushing and clearing stones at the same time, reduce the pressure in the renal pelvis, and improve the efficiency of stone removal.
  • Another advantage of the present invention is that it provides a curved combined ureteroscope, wherein the bendable sheath can be bent and rotated to reach different positions in the renal pelvis, that is, it can remove stones in various dead corners in the kidney, thereby removing the stones more cleanly.
  • Another advantage of the present invention is that it provides a curved combined ureteroscope, wherein the channel for stone discharge utilizes the space between the inner core and the inner wall of the flexible sheath to discharge the stone, thereby improving space utilization and making stone discharge more convenient.
  • An advantage of the present invention is that it provides a curved combined ureteroscope, wherein an outer sheath of the curved combined ureteroscope actively turns.
  • the inner core component can be rotated and pulled out to break stones at tricky angles. The broken stones can be sucked out through the gap between the outer sheath and the inner core component to avoid blockage, which is conducive to stone crushing and stone removal.
  • Another advantage of the present invention is that it provides a curved combined ureteroscope, which has a negative pressure suction channel and a water irrigation channel.
  • the negative pressure suction channel and the water irrigation channel ensure a suitable ratio to ensure that the internal pressure of the human body is balanced during irrigation and suction, thereby ensuring the safe conduct of the operation.
  • Another advantage of the present invention is that it provides a curved combined ureteroscope, which includes a control unit and a traction unit.
  • the control unit adjusts the external force applied by the traction unit to the outer sheath, thereby achieving the purpose of active turning of the outer sheath and passive turning of the inner core component. It can be operated with one hand, is simple and convenient, and can adjust the direction freely, so that the adjustable suction body can reach the dead corner to absorb the lesions therein, and can also reduce the risk of infection.
  • Another advantage of the present invention is that it provides a curved combined ureteroscope, which further includes a sealing cap, which is arranged at the end of the outer sheath.
  • the sealing cap seals the connection between the outer sheath and the inner core component to prevent external air from entering, causing an internal and external air pressure difference, and affecting the attraction of gravel.
  • Another advantage of the present invention is that it provides a curved combined ureteroscope, the outside of which is connected to an imaging device, and the images collected by the camera can be transmitted to the imaging device in real time, so that the entire surgical process is visible, which greatly reduces the risk of the operation and increases the convenience of the operation.
  • Another advantage of the present invention is that it provides a curved combined ureteroscope, the outer sheath component of which is configured to be cylindrical in shape, has a smooth surface, and is non-traumatic. During use, it will not cause harm to the patient, and is beneficial to protecting important structures and blood vessels in the patient's body.
  • An inner core includes an inner core body and an inner core connecting portion, wherein the inner core body extends from one end of the inner core connecting portion and passes through the sheath operating portion and is located inside the sheath body, so that the inner core connecting portion is sealed and connected to the sheath operating portion.
  • One object of the present invention is to provide a ureteroscope and a ureteroscope body, wherein the ureteroscope body has a working channel and at least one drainage channel, does not require stone suction, and the drainage channel is relatively small in size, thereby making the overall size of the ureteroscope relatively small, easy to insert into the ureter, and more convenient for clinical application.
  • Another object of the present invention is to provide a ureteroscope and a ureteroscope body, wherein an electronic scope is arranged at the head end of the ureteroscope, and a transmission optical fiber is arranged in the working channel. Therefore, the wiring of the electronic scope is more flexible, which saves space and makes the overall size of the ureteroscope more reasonable.
  • Another object of the present invention is to provide a ureteroscope and a ureteroscope body, wherein a plurality of longitudinally extending guide grooves are arranged on the tube wall surface of the middle section of the ureteroscope body, and are at a predetermined distance from both ends of the ureteroscope body, so that the two ends of the ureteroscope body are of closed design, which is beneficial to increase strength and reduce size.
  • Another object of the present invention is to provide a ureteroscope and a ureteroscope body, wherein the head section has only one working channel for water intake and placement of optical fiber, that is, the optical fiber and water intake share one channel, which not only reduces the size of the ureteroscope but also increases the strength of the ureteroscope.
  • a tube mirror body the tube mirror body includes a head section, a middle section and a terminal section connected in sequence, the terminal section is connected between the middle section and the operating end, the tube mirror body has a working channel and a drainage channel, the drainage channel includes at least one guide groove and at least one guide channel spaced from the working channel, each guide groove is connected to the guide channel, wherein the guide groove is longitudinally arranged on the surface of the middle section, the guide channel is longitudinally arranged inside the terminal section, the working channel is formed in the head section, the middle section and the terminal section, and connects the head section, the middle section, the terminal section with the operating end.
  • the tube mirror body includes a first side wall and a second side wall, the first side wall and the second side wall are integrally formed to form a tube wall of the tube mirror body, wherein the guide groove is arranged on the surface of the first side wall, and the guide channel is arranged inside the first side wall, wherein the length and thickness of the first side wall are both greater than the length and thickness of the second side wall, and the working channel is arranged near the second side wall.
  • the tube mirror body includes a first side wall and a second side wall, the first side wall and the second side wall are integrally formed to form a tube wall of the tube mirror body, wherein the guide groove is arranged on the surface of the second side wall, and the guide channel is arranged inside the second side wall, wherein the thickness of the first side wall is less than the thickness of the second side wall, and the working channel is arranged close to the first side wall.
  • the tube mirror body includes a tube wall, the working channel is arranged in the middle of the tube wall, and the two guide channels and the guide grooves are respectively arranged on the tube wall on both sides of the working channel.
  • the working channel includes a water injection channel and an optical fiber channel.
  • the top of the head section is a slope, which includes a slope top and a slope end, the slope top is located on the first side wall, and the slope end is located on the second side wall, wherein the slope extends from the slope top to the slope end, so that the end size of the working channel becomes larger.
  • the tube mirror body further comprises an imaging element and at least one lighting element, and the imaging element and the lighting element are adjacently mounted on the top of the bevel.
  • the imaging element is an electronic mirror
  • the top of the inclined surface is a planar structure
  • the electronic mirror is installed on the top of the inclined surface.
  • the size of the guide groove is smaller than the size of the guide channel.
  • the diameter of the guide channel is four times that of the guide groove.
  • the tube mirror body further includes an anti-blocking piece, the edge of which is connected to the middle section, and the anti-blocking piece is covered on the guide groove.
  • the operating end includes a gripping portion and a water injection connection portion, a wire connection portion and an instrument mounting portion arranged on the gripping portion, the water injection connection portion and the instrument mounting portion are both connected to the working channel, the wire connection portion is electrically connected to the imaging element and the lighting element, and the operating end also has a suction and discharge port and a suction control port arranged on the gripping portion, and the suction and discharge port and the suction control port are both connected to the drainage channel.
  • the present invention also provides a tube mirror body, wherein the tube mirror body is connected to an operating end to form a ureteroscope, characterized in that the The tube mirror body includes a tube wall, and the tube mirror body has a working channel and a drainage channel.
  • the drainage channel and the working channel are independently arranged inside the tube wall, wherein the drainage channel includes at least one guide groove and at least one guide channel connected to each guide groove, the guide groove is arranged on the surface of the tube wall, the guide channel is arranged inside the tube wall, and the guide channel extends from one end of the guide groove to the end of the tube wall.
  • the tube mirror body includes a head section, a middle section and a tail section, wherein the middle section is connected between the head section and the tail section, wherein the guide groove is arranged in the middle section, and the guide channel is arranged in the tail section.
  • the guide groove maintains a predetermined distance from the top and the end of the tube wall.
  • the tube mirror body further includes an imaging element and at least one lighting element, wherein the imaging element and the lighting element are adjacently mounted at the front end of the head section.
  • the length and thickness of the first side wall are greater than the length and thickness of the second side wall.
  • the length of the first side wall is smaller than the length of the second side wall.
  • the top of the head section is a slope, which extends obliquely from one side of the tube wall to the other side, wherein the slope includes a slope top and a slope end, and the slope extends from the slope top to the slope end, so that the end of the working channel is elliptical.
  • the size of the guide groove is smaller than the size of the guide channel.
  • the number of the guide grooves is 2, 3, 4 or 5.
  • the size of the guide channel is four times that of the guide groove.
  • the diameter of the guide channel is 0.5-1 mm
  • the diameter of the guide groove is 0.1-0.5 mm
  • the length of the guide groove is 2-20 mm.
  • Fig. 1 is a schematic diagram of the overall structure of the curved combined ureteroscope according to a preferred embodiment of the present invention.
  • FIG. 2 is a schematic diagram of the overall structure of the bendable sheath and the inner core of the bendable combined ureteroscope according to the above preferred embodiment of the present invention.
  • FIG3 is a schematic diagram of the overall structure of the bendable sheath of the bendable combined ureteroscope according to the above preferred embodiment of the present invention after the hydrophilic coating is removed.
  • FIG. 4 is a schematic diagram of the bending state of the bendable sheath of the bendable combined ureteroscope according to the above preferred embodiment of the present invention.
  • FIG. 5 is a schematic diagram of the end structure of the inner core body of the curved combined ureteroscope according to the above preferred embodiment of the present invention.
  • FIG6 is a schematic diagram of the end structure of the curved combined ureteroscope after the inner core is installed on the flexible sheath according to the above preferred embodiment of the present invention.
  • FIG. 7 is a schematic diagram of the overall structure of the guide member of the curved combined ureteroscope according to the above preferred embodiment of the present invention.
  • FIG. 8 is a schematic diagram of an installation state in which the guide member of the curved combined ureteroscope according to the above preferred embodiment of the present invention is installed on the flexible sheath.
  • FIG. 9 is a schematic diagram of the overall structure of the bendable combined ureteroscope according to the preferred embodiment of the present invention, in which the inner core is installed on the bendable sheath after the guide member is pulled out of the bendable sheath.
  • FIG. 10 is a partial cross-sectional view of the sheath body of the curved combined ureteroscope according to the above preferred embodiment of the present invention, illustrating the structure of the sheath body.
  • FIG. 11 is an alternative structure of the sheath body of the curved combined ureteroscope according to another preferred embodiment of the present invention.
  • FIG. 12 is a cross-sectional view of the bendable sheath of the bent combined ureteroscope according to another preferred embodiment of the present invention, showing an alternative structure of the snake bone portion.
  • FIG. 13 is another embodiment of the traction wire of the curved combined ureteroscope according to another preferred embodiment of the present invention.
  • FIG. 14 is another embodiment of the traction wire of the curved combined ureteroscope according to another preferred embodiment of the present invention.
  • FIG. 15 is a schematic diagram of the overall structure of a curved combined ureteroscope according to another preferred embodiment of the present invention.
  • FIG. 16 is a partially enlarged view of a curved combined ureteroscope according to another preferred embodiment of the present invention.
  • FIG. 17 is a schematic diagram of the internal structure of an outer sheath of a curved combined ureteroscope according to another preferred embodiment of the present invention.
  • FIG. 18 is a schematic diagram of the bent state of the outer sheath of a bent combined ureteroscope according to another preferred embodiment of the present invention.
  • FIG. 19 is a schematic structural diagram of a guide sheath of a curved combined ureteroscope according to another preferred embodiment of the present invention.
  • FIG. 20 is a schematic diagram of the overall structure of an inner core assembly of a curved combined ureteroscope according to another preferred embodiment of the present invention.
  • 21 is a schematic diagram of the combined state of the guide sheath and the outer sheath of a curved combined ureteroscope according to another preferred embodiment of the present invention.
  • FIG. 22 is a schematic diagram showing the combined state of the outer sheath and inner core assembly of a curved combined ureteroscope according to another preferred embodiment of the present invention.
  • FIG. 23 is one of the diagrams showing the use process of a curved combined ureteroscope according to another preferred embodiment of the present invention.
  • FIG. 24 is a second diagram showing the use process of a curved combined ureteroscope according to another preferred embodiment of the present invention.
  • FIG. 25 is a third diagram showing the use process of a curved combined ureteroscope according to another preferred embodiment of the present invention.
  • FIG. 26 is a schematic diagram of the three-dimensional structure of the ureteroscope body according to the first preferred embodiment of the present invention.
  • FIG. 27 is a schematic diagram of the three-dimensional structure of the ureteroscope body according to the first preferred embodiment of the present invention from another perspective.
  • FIG. 28 is a schematic structural diagram of the ureteroscope body from another viewing angle according to the first preferred embodiment of the present invention.
  • FIG. 29 is a schematic cross-sectional view of the ureteroscope body of the ureteroscope according to the first preferred embodiment of the present invention.
  • FIG30 is a schematic cross-sectional view of the ureteroscope body of the ureteroscope according to the first preferred embodiment of the present invention.
  • FIG31 is a schematic diagram of the overall structure of the ureteroscope according to the first preferred embodiment of the present invention.
  • FIG. 32 is a schematic diagram of the application process of the ureteroscope according to the first preferred embodiment of the present invention.
  • FIG33 is a schematic diagram of the three-dimensional structure of the ureteroscope body of the ureteroscope according to the second preferred embodiment of the present invention.
  • FIG34 is a schematic diagram of the three-dimensional structure of the ureteroscope body of the ureteroscope according to the third preferred embodiment of the present invention.
  • FIG35A is a schematic structural diagram of the ureteroscope body from another viewing angle according to the third preferred embodiment of the present invention.
  • FIG35B is a schematic cross-sectional view of the ureteroscope body of the ureteroscope according to the third preferred embodiment of the present invention.
  • FIG36 is a schematic diagram of the three-dimensional structure of the ureteroscope body of the ureteroscope according to the fourth preferred embodiment of the present invention.
  • FIG37 is a schematic diagram of the three-dimensional structure of the ureteroscope body according to the fourth preferred embodiment of the present invention from another perspective.
  • FIG38 is a schematic cross-sectional view of the ureteroscope body of the ureteroscope according to the fourth preferred embodiment of the present invention.
  • FIG39 is a schematic diagram of the three-dimensional structure of the ureteroscope body of the ureteroscope according to the fifth preferred embodiment of the present invention.
  • FIG. 40 is a schematic structural diagram of the ureteroscope body from another viewing angle according to the fifth preferred embodiment of the present invention.
  • Figure 41 is a schematic diagram of the three-dimensional structure of the ureteroscope body of the ureteroscope according to the sixth preferred embodiment of the present invention.
  • one should be understood as “at least one” or “one or more”, that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term “one” should not be understood as a limitation on the quantity.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the bent combined ureteroscope 6 is used for kidney stone removal surgery, especially for entering the kidney through the ureter to remove kidney or kidney stones.
  • kidney stone removal surgery especially for entering the kidney through the ureter to remove kidney or kidney stones.
  • stones in the ureter those skilled in the art should understand that the curved combined ureteroscope 6 can also be used for other surgeries.
  • the curved combined ureteroscope 6 is an integral unit after installation, that is, the doctor can complete negative pressure suction, bending control and other operations with one hand, thereby reducing the doctor's workload during operation.
  • the integrated curved combined ureteroscope 6 allows the doctor to focus more on the surgical operation and reduces the difficulty of the doctor's operation during the operation.
  • the curved combined ureteroscope 6 operated with one hand allows the doctor to conveniently adjust the surgical position during operation. That is, when adjusting the surgical position, the doctor only needs to consider the positional relationship between the curved combined ureteroscope 6 and the patient, and the positional relationship between the doctor and the curved combined ureteroscope 6, unlike traditional surgery where the doctor needs to consider the relative positional relationship between the sheath and the scope body, thereby reducing the difficulty in adjusting the curved combined ureteroscope 6.
  • the curved combined ureteroscope 6 can also effectively prevent stones from being blocked in the curved combined ureteroscope 6, thereby resolving the problem in traditional surgery where the scope needs to be pulled out to clear the stones after stone blockage.
  • the front end of the curved combined ureteroscope 6 is bendable, that is, it can bend in the patient's renal pelvis and can clear places that cannot be reached in traditional stone surgery, thereby clearing stones in the corners of the renal pelvis and sucking them out of the body.
  • the bent combined ureteroscope 6 may include a bendable sheath 61 and an inner core 62, wherein the inner core 62 is sealed and detachably connected to the bendable sheath 61, and after the inner core 62 is sealed and connected to the bendable sheath 61, they form a whole, that is, the bent combined ureteroscope 6 is an integrated whole.
  • the curved combined ureteroscope 6 as a whole mirror integrates the places where the inner core 62 and the flexible sheath 61 need to be operated through the combination of the inner core 62 and the flexible sheath 61, so that the doctor can operate it with one hand, reducing the difficulty of the doctor's operation during the operation, and also freeing up space for the doctor's other hand, saving the doctor's energy.
  • the front end of the bendable sheath 61 is bendable, that is, it can bend inside the patient's renal pelvis, and can clear places that cannot be reached in traditional stone surgery, thereby clearing stones in the corners of the renal pelvis and sucking them out of the body.
  • the bendable sheath 61 may include a bending component 610, a sheath body 611 and a sheath operating part 612, wherein the sheath body 611 extends from one end of the sheath operating part 612 to the distal end to form a slender tube, and the bending component 610 is arranged at the distal end of the sheath body 611.
  • the sheath body 611 is soft and has a certain degree of softness so as to adapt to the ureteral shape of different patients.
  • the cross-section of the sheath body 611 can be made into an elliptical or circular shape. Those skilled in the art should understand that the cross-sectional shape of the sheath body 611 can also be other shapes, including but not limited to the shapes listed above.
  • the sheath body 611 may include a sheath body skeleton 6111 and a protective layer 6112, wherein the protective layer is coated on the sheath body skeleton 6111 to minimize the space between the protective layer 6112 and the sheath body skeleton 6111, thereby reducing the diameter of the sheath body 611, so that the inner diameter of the sheath body skeleton 6111 can be as large as possible under the same diameter of the sheath body 611.
  • the sheath main body skeleton 6111 is a snake bone skeleton
  • the protective layer 6112 is tightly attached to the sheath main body skeleton 6111.
  • the protective layer 6112 has a certain toughness so that it can bend along with the snake bone skeleton when it bends.
  • the protective layer 6112 also has good wear resistance so as to withstand the relative movement between the snake bone skeleton and the protective layer 6112 when the snake bone skeleton bends, so that the sheath main body skeleton 6111 and the protective layer 6112 are not easily damaged when rubbing against each other.
  • the bending component 610 is disposed at the distal end of the sheath body 611, that is, at an end away from the sheath operating part 612.
  • the bending component 610 can be bent in two directions and cooperate with the axial rotation of the sheath operating part 612 to basically form omnidirectional space coverage, so as to reach different positions in the renal pelvis, that is, to reach stones located in blind spots in the renal pelvis.
  • the bending component 610 can complete the work of crushing and sucking the stones by cooperating with the inner core 62. That is to say, the curved combined ureteroscope 6 can bend and suck at the same time with the help of the bending component 610, so as to crush the stones and expel them from the body.
  • the bending component 610 includes a snake bone portion 6101 and a pair of cables 6102.
  • the snake bone portion 6101 is arranged at the distal end of the sheath body 611, that is, the end away from the sheath operating portion 612.
  • Each section of the snake bone portion 6101 can be bent at a certain angle.
  • the cables 6102 are symmetrically arranged on both sides of the snake bone portion 6101 and extend along the sheath body 611 to the sheath operating portion 612.
  • the serpentine bone portion 6101 further includes a head end serpentine bone unit 61011, at least one middle section serpentine bone unit 61012 and a connecting section serpentine bone unit 61013, wherein the connecting section serpentine bone unit 61013 is connected to the sheath body skeleton 6111 of the sheath body 611, the middle section serpentine bone unit 61012 is connected end to end and connected to the connecting section serpentine bone unit 61013, and the head end serpentine bone unit 61011 is connected to the middle section serpentine bone unit
  • the other end of 61012 is, that is, the end away from the connecting section snake bone unit 61013.
  • the installation position of the head end snake bone unit 61011 is away from the sheath operating part 612 so as to be at the distal end of the sheath body 611.
  • the lengths of the middle snake bone units 61012 may be inconsistent.
  • the shorter middle snake bone units 61012 are connected in sequence and bent, when each section of the middle snake bone units 61012 is bent at the same angle, the head of the middle snake bone unit 61012 of one section is closer to the head of the middle snake bone unit 61012 of another section due to the length of the snake bone itself, that is, it has a larger bending radius.
  • the snake bone portion 6101 with inconsistent bending degrees can be formed to adapt to the bending degree actually required during surgery.
  • the pull cable 6102 includes a traction wire 61021 and a sleeve 61022, and the sleeve 61022 extends from the sheath operating part 612 to the connection position where the sheath main body skeleton 6111 connects to the connecting section snake bone unit 61013.
  • One end of the traction wire 61021 is fixed on both sides of the head end snake bone unit 61011, and the other end passes through the sleeve 61022 and is connected to the sheath operating part 612.
  • the sleeve 61022 is arranged to fit the sheath body 611.
  • the sleeve 61022 can be arranged between the protective layer 6112 and the sheath body skeleton 6111, or can be arranged on the outer surface of the protective layer 6112 and fit the protective layer 6112.
  • the traction wire 61021 is arranged in the middle of the sleeve 61022 and fits the connecting section snake bone unit 61013 and the middle section snake bone unit 61012 all the way until it is fixed to the head end snake bone unit 61011.
  • the traction wire 6102 is symmetrically arranged on both sides of the snake bone part 6101.
  • the traction wire 61021 on one side that is, moving the traction wire 61021 on one side toward the sheath operation part 612
  • the traction wire 61021 on this side tends to shorten, thereby generating a contraction force to drive the snake bone part 6101 to bend
  • the traction wire 61021 on the other side can be appropriately extended to limit the bending degree of the traction wire 61021 on this side.
  • the traction wire 61021 on this side shortens and bends, the traction wire 61021 on the other side will be tightened, and cooperate with the rigidity and curvature of the snake bone part 6101 itself to complete the bending of a controllable angle.
  • the bending degree of the snake bone part 6101 is controlled by continuously adjusting the length of the traction wire 61021 on both sides.
  • the hardness and toughness of the sleeve 61022 are greater than those of the traction wire 61021 , so that when subjected to the same magnitude of pulling force, the bending degree of the traction wire 61021 is greater than that of the sleeve 61022 , so as to achieve controllable bending of the snake bone portion 6101 .
  • the sheath operating part 612 also includes a sheath body 6121 and a bending control part 6122.
  • the sheath body 611 is installed on the sheath body 6121.
  • the pull cable 6102 is connected to the bending control part 6122 and is controlled by the bending control part 6122.
  • the bending control part 6122 is installed on the sheath body, and the installation position is suitable for the position that can be covered by the thumb of a person, so that it is convenient for the doctor to control it with fingers during operation.
  • the bending control member 6122 connects the cables 6102 on both sides and can control the cables 6102 simultaneously. That is, when the cables 6102 on one side contract and move, the cables 6102 on the other side extend and always keep the cables 6102 in a taut state, so as to fix the snake bone part 6101 when it is bent, thereby ensuring that the snake bone part 6101 can still maintain a precise bending angle when it is bent.
  • the sheath body 6121 also has a suction channel, the suction channel 6123 is opened on one side of the sheath body 6121 and is at a certain angle to the sheath body 6121, the suction channel 6123 is connected and extends to the inside of the sheath body 611, and is connected to the internal space of the sheath body 611, that is, the head end snake bone unit 61011 of the snake bone part 6101 can extend all the way to the suction channel 6123, so as to suck out the calculus located at the head end snake bone unit 61011.
  • the suction channel 6123 can be connected to an aspirator to suck the calculus during surgery.
  • the sheath body 6121 also has a sealed docking hole 6125, which is arranged at the rear end of the sheath body 6121 and is on the same axis as the skeleton of the sheath body 611, that is, the sealed docking hole 6125 can be directly connected to the internal space of the sheath body 611.
  • the sealing docking hole 6125 is used for the inner core 62 to pass through, and when the inner core 62 passes through the sealing docking hole 6125, the sealing connection between the inner core 62 and the sheath operating part 612 can be maintained, and the inner core 62 can be rotated in a sealed manner along the axis of the sealing docking hole 6125.
  • the sheath body 6121 also has a first sealed butt end 6124, which is located at the rear of the sheath body 6121. Away from the head end snake bone unit 61011.
  • the sheath body 6121 also has a negative pressure suction adjustment hole 6126, which is connected to the suction channel 6123.
  • the negative pressure suction adjustment hole 6126 is arranged near the position where the sheath body 611 is connected to the sheath operating part 612, so that the operator's thumb can reach it.
  • the negative pressure suction adjusting hole 6126 is connected to the suction channel 6123 to keep the pressure inside and outside the suction channel 6123 consistent.
  • the suction channel 6123 is connected to the negative pressure suction device, the airflow flows from the negative pressure suction adjusting hole 6126 to the negative pressure suction device. At this time, the external pressure is consistent with the pressure inside the suction channel 6123.
  • the negative pressure suction adjusting hole 6126 is blocked, the negative pressure suction device extracts the gas in the suction channel 6123, the gas in the suction channel 6123 is reduced, and the pressure is reduced, thereby forming a negative pressure attraction at the front end of the bending component 610, so that stones can be absorbed.
  • the bendable sheath 61 also includes a hydrophilic coating film 613, which is disposed on the outside of the sheath body 611 to cover the bending component 610 and the sheath body 611.
  • the hydrophilic coating film 613 fits tightly to the sheath body 611 to reduce the diameter of the sheath body 611 as much as possible and covers the pull cable 6102 to prevent the bending component 610 from directly contacting the inner wall of the patient's ureter.
  • the hydrophilic coating film 613 can reduce the resistance of the flexible sheath 61 when entering along the patient's ureter, that is, reduce the sliding friction between the outer wall of the sheath body 611 of the flexible sheath 61 and the inner wall of the patient's ureter, so that the flexible sheath 61 can smoothly enter the renal pelvis along the patient's ureter to remove stones.
  • the inner core 62 includes an inner core body 621 and an inner core connecting portion 622 , and the inner core body 621 extends from the inner core connecting portion 622 toward the distal end.
  • the inner core body 621 further has a perfusion channel 6211 and a first instrument channel 6213 .
  • the perfusion channel 6211 and the first instrument channel 6213 are both opened in the inner core body 621 and opened along the axial direction of the inner core body 621 .
  • the inner core body 621 also includes a visual unit 6212 and a light source 6214.
  • the visual unit 6212 is arranged at the distal end of the inner core body 621, and the light source 6214 is arranged next to the visual unit 6212.
  • the first perfusion channel 6211 and the first instrument channel 6213 are opened through the inner core body 621, and a perfusion port and an instrument port are formed at the distal end of the inner core body 621.
  • the perfusion port formed by the first perfusion channel 6211 and the instrument port formed by the first instrument channel 6213 are arranged together with the visual unit 6212 and the light source 6214 at the distal end of the inner core body 621.
  • the inner core body 621 is soft and has a certain toughness, so as to be easily inserted into the space formed by the sheath body 611 through the sealing docking hole 6125 of the sheath operating part 612 .
  • the diameter of the inner core body 621 is smaller than that of the sheath body 611, so that after the inner core body 621 is inserted into the sheath body 611, there is still a certain space between the outer wall of the inner core body 621 and the inner wall of the sheath body 611 to facilitate the movement of the inner core body 621 in the sheath body 611.
  • the perfusion channel 6211 is used to perfuse liquid, and is used to perfuse liquid into the kidney to flush out stones, so as to ensure a clear field of view of the visual unit 6212.
  • the first instrument channel 6213 can be used to install a holmium laser for laser lithotripsy.
  • the liquid flowing out of the perfusion channel 6211 can also cool down the stones broken by the holmium laser.
  • the stones broken by the holmium laser are sucked out through the gap between the inner core body 621 and the sheath body 611, that is, sucked out by the suction channel 6123.
  • the visual unit 6212 may be a fiberscope or an electronic scope. Those skilled in the art should understand that the visual methods of the visual unit 6212 include but are not limited to the methods listed above.
  • the inner core connection part 622 is connected to the inner core body 621, and the inner core connection part 622 has a circuit channel 6221, a liquid filling channel 6222 and a second instrument channel 6223.
  • the circuit channel 6221 and the liquid filling channel 6222 are respectively opened on both sides of the inner core connection part 622, and the circuit channel 6221 is connected with the visual unit 6212 and the light source 6214.
  • the second instrument channel 6223 is formed by the first instrument channel 6213 extending backward from the inner core 62 at the inner core connection part 622 and extending away from the distal end of the inner core body 621.
  • the first instrument channel 6213 and the second instrument channel 6223 are located on the same axis, and the holmium laser can enter the first instrument channel 6213 from the second instrument channel 6223 and be arranged at the distal end of the inner core body 621 to work.
  • the perfusion channel 6222 is connected to the perfusion channel 6211, and is suitable for perfusing liquid into the perfusion channel 6222 from the outside and perfusing it into the kidney through the perfusion channel 6211 to flush stones, ensure a clear field of view during surgery and cool down the stones broken by the holmium laser.
  • the circuit channel 6221 is used for data transmission and power delivery, and supplies power to the light source 6214 , and transmits data of the visual unit 6212 to the outside for use by doctors.
  • the inner core connection part 622 also includes a second sealed docking end 6224, which is located at the position where the inner core body 621 connects to the inner core connection part 622.
  • the second sealed docking end 6224 fits the first sealed docking end 6124, so that the inner core connection part 622 is sealedly connected to the sheath operation part 612, that is, the inner core 62 and the bendable sheath 61 are combined to form a whole, so that it is convenient for the doctor to operate with one hand, reducing the difficulty of the doctor's surgical operation.
  • the inner circle of the sealed docking hole 6125 can be provided with elastic tissue material, so that the inner diameter of the sealed docking hole 6125 is slightly smaller than the outer diameter of the inner core body 621, so that when the inner core body 621 passes through the sealed docking hole 6125, the outer wall of the inner core body 621 squeezes and contacts the elastic tissue material of the inner circle of the sealed docking hole 6125.
  • the length of the sheath body 611 plus the length of the snake bone portion 6101 is exactly the same as the length of the inner core body 621, that is, when the first sealing butt end 6124 is butted with the second sealing butt end, the distal end of the inner core body 621 is exactly located in the middle of the head end snake bone unit 61011. Thus, when the snake bone portion 6101 is bent, the inner core body 621 is driven to bend.
  • the bent combined ureteroscope 6 further includes a guide 63, which is used to guide the bendable sheath 61 to be placed into the patient's kidney.
  • the guide 63 can be inserted from the sealing docking hole 6125 of the sheath operation part 612 and exposed from the head end snake unit 61011.
  • the guide member 63 includes a guide tip 631 , a guide middle section 632 and a limiting tail end 633 , and the guide tip 631 and the limiting tail end 633 are respectively installed at two ends of the guide middle section 632 .
  • the diameter of the guide member 63 is slightly smaller than the diameter of the sheath body 611.
  • the guide tip 631 of the guide member 63 is inserted into the sealing docking hole 6125 and exposed from the head end snake bone unit 61011.
  • the diameter of the limiting tail end 633 is larger than the diameter of the sealing docking hole 6125. Therefore, after the guide tip 631 is exposed from the head end snake bone unit 61011, the limiting tail end 633 limits the further movement of the guide member 63.
  • the guide member 63 is soft and has a certain toughness so as to adapt to the physiological structure of the patient's ureter.
  • the end of the curved combined ureteroscope 6 is flat, which is convenient for removing stones, but not conducive to entering the renal pelvis along the patient's ureter. Therefore, the guide 63 is needed to assist in entering the patient's kidney.
  • the guide member 63 When the curved combined ureteroscope 6 is in operation, the guide member 63 is first inserted into the bendable sheath 61, and the guide tip 631 is exposed from the head end snake bone unit 61011 of the bendable sheath 61.
  • the guide tip 631 has a smooth tip, so as to separate human tissue from the patient's ureter to the renal pelvis.
  • the guide member 63 After the guide member 63 guides the bendable sheath 61 to enter the predetermined position, the guide member 63 is withdrawn from the bendable sheath 61, and the inner core 62 inserts the inner core body 621 into the sheath body 611 along the sealing docking hole 6125, and the second sealing docking end is sealed and connected with the first sealing docking end 6124, and the inner core 62 and the bendable sheath 61 form a whole, which is convenient for doctors to operate.
  • the holmium laser is delivered to the distal end of the inner core body 621, that is, the head end snake bone unit 61011, through the second instrument channel 6223 and the first instrument channel 6213 to perform laser lithotripsy.
  • the visual unit 6212 provides a visual field at the distal end of the inner core body 621 under the illumination of the light source 6214, that is, the stone site can be clearly seen, and the visual field data is transmitted through the circuit channel 6221.
  • Liquid is transported to the distal end of the inner core body 621, namely the head end snake bone unit 61011, through the liquid filling channel 6222 and the perfusion channel 6211 to flush stones, cool down the stones broken by the holmium laser and ensure a clear field of view during surgery.
  • the flushed stones are attracted by the suction channel 6123, and the suction channel 6123 sucks out the stones and the infused fluid together to maintain the internal pressure of the kidney.
  • the bending component 610 controls the bending of the bendable sheath 61 so as to reach different positions in the renal pelvis, that is, it is able to remove stones from various dead corners in the kidney, thereby removing the stones more cleanly.
  • the stones are discharged through the space between the outer wall of the inner core 62 and the inner wall of the sheath body 611.
  • the inner core 62 can be The bendable sheath 61 performs axial rotation inside, so that when stones are accumulated between the bendable sheath 61 and the inner core 62, the accumulated stones are diffused to the periphery through rotation, thereby reducing the volume of accumulated stones, and further unblocking the suction channel 6123, thereby improving the stone discharge efficiency. That is to say, the inner core 62 does not need to be pulled out to complete the work of clearing stone blockage, thereby reducing the time for solving the stone blockage problem and increasing the stone discharge efficiency.
  • FIG. 11 shows an alternative structure of the sheath body 611 of the curved combined ureteroscope 6 according to the first preferred embodiment of the present invention.
  • the sheath main body skeleton 6111A adopts a spiral metal ring, and the cross-section of the sheath main body skeleton 6111A can be circular, quadrilateral, or other shapes.
  • the cross-sectional shape of the sheath main body skeleton 6111A includes but is not limited to the shapes listed above.
  • the number of spiral windings of the sheath main body skeleton 6111A and the spacing between each winding can be different. That is to say, the sheath main body skeleton 6111A can be wound more densely at one end with a closer spacing between each winding, or the number of spiral windings at one end can be less and the spacing between each winding can be larger, so as to adjust the bending performance of the sheath main body skeleton 6111A.
  • the protective layer 6112 is tightly attached to the sheath main body skeleton 6111A.
  • the protective layer 6112 has a certain toughness so that it can bend along with the snake bone skeleton when it bends.
  • the protective layer 6112 also has good wear resistance so as to withstand the relative movement between the snake bone skeleton and the protective layer 6112 when the snake bone skeleton bends, so that the sheath main body skeleton 6111A and the protective layer 6112 are not easily damaged when rubbing against each other.
  • FIG. 12 is an alternative structure of the snake portion 6101 of the curved combined ureteroscope 6 according to the first preferred embodiment of the present invention.
  • the snake bone portion 6101 is replaced by the spiral portion 6101A.
  • the spiral portion 6101A may be a spring, and the cross section of the spring may be circular, rectangular, or other shapes. It should be understood by those skilled in the art that the cross-sectional shape of the spiral portion 6101A includes but is not limited to the shapes listed above.
  • the number of turns of the spiral portion 6101A and the spacing between each turn can be different. That is to say, the spiral portion 6101A can be wound more densely at one end with a closer spacing between each turn, or the number of turns of the spiral at one end can be less and the spacing between each turn can be larger, so as to adjust the bending performance of the spiral portion 6101A.
  • the traction wire 61021 is symmetrically arranged on both sides of the spiral portion 6101A, and the ends are fixed to the ends of the spiral portion 6101A, so that the spiral portion 6101A can be pulled and controlled by the traction wire 61021 to bend, thereby reaching different positions in the renal pelvis, that is, it can remove stones in various dead corners in the kidney, thereby removing the stones more cleanly.
  • FIG. 13 there is another implementation of the traction wire 61021 of the curved combined ureteroscope 6 according to another preferred embodiment of the present invention.
  • the number of the traction wires 61021 is three, that is, the directions in which the traction wires 61021 pull and drive the inner core body 621 to rotate are increased, and the inner core body 621 can be rotated in six directions through the traction wires 61021, which greatly increases the adaptability of the inner core body 621. That is to say, in the renal subcalyx with a more complex cavity, the inner core body 621 can better remove kidney stones, and then through its own axial rotation, it can achieve omnidirectional rotation.
  • FIG. 14 there is another implementation of the traction wire 61021 of the curved combined ureteroscope 6 according to another preferred embodiment of the present invention.
  • the number of the traction wires 61021 is four, that is, the traction wires 61021 pull the inner core body 621 to rotate in more directions.
  • the traction wires 61021 allow the inner core body 621 to achieve unidirectional rotation in eight directions, which greatly increases the adaptability of the inner core body 621. That is to say, in the face of a more complex cavity environment, the inner core body 621 can better adapt to the renal cavity environment, thereby better removing kidney stones.
  • omnidirectional rotation is achieved.
  • the bending degrees of the adjacent traction wires 61021 at the same time can be different, so that when the traction wires 61021 contract and bend, the inner core 621 is driven to bend at different angles, thereby achieving and realizing omnidirectional rotation. That is, it can bend appropriately and effectively in the complex renal pelvic space of the patient, and can clear places that cannot be reached in traditional stone surgery, thereby clearing stones in the corners of the renal pelvis and sucking them out of the body.
  • a curved combined ureteroscope according to a preferred embodiment of the present invention is shown schematically.
  • the curved combined ureteroscope 1 adopts a different method to realize the suction function of the curved combined ureteroscope 1.
  • An outer sheath of the curved combined ureteroscope 1 actively turns to drive an inner core component to turn.
  • the inner core component is rotatable and can be pulled out.
  • the gravel can be sucked out through the gap between the outer sheath and the inner core component to avoid blockage, which is conducive to gravel crushing and stone removal.
  • the portion of the curved combined ureteroscope 1 on the side entering the patient's kidney K is used as the front side of the curved combined ureteroscope 1, and the side opposite to the front side of the curved combined ureteroscope 1 is used as the rear side thereof.
  • the curved combined ureteroscope 1 includes a guide sheath 10, an outer sheath 20 and an inner core component 30.
  • the guide sheath 10 is first inserted into the outer sheath 20, and the outer sheath 20 is sent into the kidney K of the human body through the guidance of the guide sheath 10, and then the guide sheath 10 is taken out and the inner core component 30 is inserted to perform surgery.
  • the outer sheath 20 and the inner core component 30 are combined with each other, so that the medical staff can operate the curved combined ureteroscope 1 with one hand, which is convenient for the surgical process.
  • the inner diameter of the outer sheath 20 is set to F9, and the outer diameter is set to F11, so as to conform to the human body structure, so as to facilitate the curved combined ureteroscope 1 to enter the lesion in the human body and to attract and discharge the gravel.
  • the guide sheath 10 when inserting the guide sheath 10, medical personnel usually adopt a blind insertion method. Meanwhile, the guide sheath 10 further includes a wedge-shaped tip 12, so that the guide sheath 10 can enter the patient's body and reach the position of the kidney K.
  • the guide sheath 10, the outer sheath 20 and the inner core assembly 30 of the curved combined ureteroscope 1 are all configured to be cylindrical in shape with a smooth surface and are non-traumatic. During use, they will not cause harm to the patient and are beneficial to protecting important structures and blood vessels in the patient's body.
  • the outer sheath 20 includes an outer sheath body 21 and an operating portion 22, and the operating portion 22 is connected to the end of the outer sheath body 21.
  • the outer sheath 20 is configured to be bendable to drive the inner core component 30 to bend.
  • the inner core component 30 is rotatable and can be withdrawn, which is convenient for crushing and aspirating stones.
  • the outer sheath body 21 includes a curved portion 211, a fixed portion 212 and a main channel 213, wherein the curved portion 211 extends upward from the upper end of the fixed portion 212, and the main channel 213 is disposed inside the outer sheath body 21 to facilitate the insertion of the inner core assembly 30.
  • the curved portion 211 is disposed at the front end of the outer sheath body 21, and the fixed portion 22 is disposed at the end of the outer sheath body 21 to connect the operating portion 22.
  • the outer side of the curved portion 211 of the outer sheath body 21 is wrapped with a coating 2111 to prevent the bending hole on the surface of the curved portion from being blocked and affecting its bending.
  • the coating 2111 has a certain elasticity and will not affect the bending of the curved portion.
  • the bending portion 211 is preferably made of snake bone
  • the fixing portion 212 is preferably made of spring coil. That is to say, when the curved combined ureteroscope 1 is in use, the bending portion 211 is suitable for being controlled to bend, and the fixing portion 212 needs to have a certain strength and a certain bending resistance to prevent the fixing portion 212 from also bending due to the traction force when the bending portion 211 is bent.
  • the bending portion 211 and the fixing portion 212 need to be made of different structures.
  • the bending portion 211 is made of snake bones, and the fixing portion 212 is preferably made of spring coils.
  • the bending portion 211 is made of spring coils, and the fixing portion 212 is preferably made of snake bones.
  • the material density of the fixing portion 212 is greater than the material density of the bending portion 211, so that the fixing portion 212 has a stronger strength. That is to say, when both the bending portion 211 and the fixing portion 212 are supported internally by spring coils, the density of the spring coils of the fixing portion 212 is greater than the density of the spring coils inside the bending portion 211.
  • the material and structure of the bending portion 211 and the fixing portion 212 are not limitations of the present invention, as long as the purpose of being bendable and easy to operate can be achieved.
  • the operating part 22 includes a control unit 221 and a traction unit 222.
  • the control unit 221 is arranged on the surface of the operating part 22, and the traction unit 222 is arranged on the bending part 211 of the outer sheath body 21. That is to say, medical staff can control the traction unit 222 through the control unit 221, thereby controlling the bending part 211 of the outer sheath body 21 to bend.
  • control unit 221 includes a first control element 2211 and a second control element 2212.
  • the unit 222 includes a first traction member 2221 and a second traction member 2222, wherein one end of the first traction member 2221 is connected to the first control member 2211, and the other end is connected to the left front end of the curved portion 211 of the outer sheath body 21, and one end of the second traction member 2222 is connected to the second control member 2212, and the other end is connected to the right front end of the curved portion 211 of the outer sheath body 21.
  • Medical staff can control the tightness of the first traction member 2221 and the second traction member 2222 through the first control member 2211 and the second control member 2212, respectively, and then control the bending of the curved portion 211 of the outer sheath body 21 to drive the bending of the inner core assembly 30. It should be understood by those skilled in the art that the number of the control unit 221 and the traction unit 222 is not a limitation of the present invention.
  • first traction member 2221 and the second traction member 2222 are symmetrically arranged on both sides of the curved portion 211 of the outer sheath body 21, and the ends of the first traction member 2221 and the second traction member 2222 are flush.
  • the curved portion 211 of the outer sheath body 21 has a mounting groove on both sides, and the first traction member 2221 and the second traction member 2222 are preferably installed inside the mounting groove, so that the inner core assembly 30 will not be affected by the traction unit 222 after entering the outer sheath 20, and the traction unit 222 will not occupy the space of the main channel 213 of the outer sheath 20.
  • the traction unit 222 can also be attached to the surface of the curved portion 211 of the outer sheath body 21.
  • the first traction member 2221 and the second traction member 2222 may also be disposed inside the outer sheath 20 or connected to the outer wall of the outer sheath 20 as long as it does not affect the use. Therefore, the installation position of the traction unit 222 is not a limitation of the present invention.
  • control unit 221 can be used to control the stretching and shortening of the traction unit 222, thereby controlling the bending of the outer sheath 20.
  • control unit 221 adjusts the external force applied by the traction unit 22 to the curved portion 211 of the outer sheath 20 to adjust the degree of bending of the outer sheath 20.
  • the medical staff can operate the first traction member 2221 and the second traction member 2222 with one hand, which is simple and convenient.
  • the outer sheath 20 and the inner core assembly 30 have strong toughness to facilitate entering the patient's kidney K, and the curved portion 211 can be repeatedly switched between the curved and upright states to reach different positions to meet clinical needs.
  • the outer sheath 20 further has a negative pressure suction channel 23 and a negative pressure adjustment interface 24, the negative pressure adjustment interface 24 is arranged on the operating part 22, and the negative pressure adjustment interface 24 is connected to the negative pressure suction channel 23.
  • the negative pressure suction channel 23 is arranged between the outer sheath body 21 and the inner core component 30, that is, when the inner core component 30 is plugged into the main channel 213 of the outer sheath 20, the gravel is attracted through the gap between the outer sheath 20 and the inner core component 30, that is, the negative pressure suction channel 23.
  • medical staff can adjust the pressure in the negative pressure suction channel 23 through the negative pressure adjustment port 24 to better attract and discharge the gravel.
  • the outer sheath 20 further has an auxiliary channel 25, which is arranged inside the operating part 22.
  • the auxiliary channel 25 extends inwardly from the surface of the operating part 22, and the auxiliary channel communicates with the main channel 213 of the outer sheath body 21.
  • the inner core component 30 can enter the auxiliary channel 25 and be plugged into the main channel 213 of the outer sheath body 21, so that the inner core component 30 and the outer sheath 20 are fixed to each other as a whole, which is convenient for medical staff to operate.
  • the inner core component 30 can be rotated or extracted from the main channel 213 to break the stones at a tricky angle. The crushed stones can be sucked out through the gap between the outer sheath and the inner core component to avoid blockage, which is conducive to crushing and discharging stones.
  • the inner core component 30 when the inner core component 30 rotates, it does not rotate from the central axis of the main channel 213 of the outer sheath body 21, that is, the inner core component 30 is not symmetrical. Through the rotation of the inner core component 30 in the main channel 213 and the active turning of the outer sheath 20, stones of various tricky angles can be crushed and attracted.
  • the outer sheath 20 further includes a sealing cap 26, which is arranged at the end of the operating part 22.
  • the sealing cap 26 seals the connection between the outer sheath 20 and the inner core component 30 to prevent external air from entering, causing an internal and external pressure difference, and affecting the attraction of gravel.
  • the sealing cap 26 is set to be hollow, that is, the inner core component 30 is suitable for passing through the center of the sealing cap 26, so that the inner core component 30 can enter the main channel 213 of the outer sheath body 21.
  • the sealing cap 26 can seal the gap between the outer sheath 20 and the inner core component 30 after the inner core component 30 enters the main channel 213, so as to prevent external air from entering, causing an internal and external pressure difference, and affecting the attraction of gravel.
  • the inner core component 30 includes a core body 31 and a connecting portion 32, and the connecting portion 32 is connected and fixed to the end of the core body 31.
  • the outer sheath 20 and the inner core component 30 are fixed as an integrated structure, that is, the outer sheath 20 is sleeved on the outside of the inner core component 30, and the outer diameter of the operating portion 22 of the outer sheath 20 is set to be smaller than the outer diameter of the connecting portion 32, so that the operating portion 22 can be stuck to the upper end of the connecting portion 32, and the outer diameter of the core body 31 is set to be smaller than the outer diameter of the outer sheath body 21.
  • the outer sheath 20 can be completely sleeved on the outside of the inner core component 30, so that the outer sheath 20 and the inner core component are fixed to each other as an integrated structure.
  • the core body 31 has a water filling channel 311, including a camera 312 and a light source assembly 313.
  • the water filling channel 311 is arranged inside the core body 31, and the camera 312 and the light source assembly 313 are arranged on the front end surface of the core body 31.
  • the camera 312 is suitable for being electrically connected to an external imaging device, so that when the curved combined ureteroscope 1 enters the patient's body, the image collected by the camera 312 can be transmitted to the imaging device in real time, so that the entire operation process can be visualized, which greatly reduces the risk of the operation and increases the convenience of the operation.
  • the negative pressure suction channel 23 and the irrigation channel 311 need to ensure a suitable ratio, that is, the area ratio of the negative pressure suction channel 23 and the irrigation channel 311 is greater than three, so as to ensure that the internal pressure of the human body is balanced during irrigation and suction, thereby ensuring the safety of the operation.
  • the camera 312 and the light source assembly 313 are arranged at the front end of the core 31, so as to minimize the volume occupied by the camera 312 and the light source assembly 313, thereby making the volume of the negative pressure suction channel 23 large enough to facilitate the suction and discharge of gravel and avoid blockage.
  • the connecting portion 32 has a water inlet 321, a working channel 322 and a circuit channel 323.
  • the water inlet 321 is connected to the water filling channel 311.
  • the working channel 322 and the circuit channel 323 are both arranged inside the connecting portion 32. In other words, the working channel 322 and the circuit channel 323 are both recessed and extend inward from the surface of the connecting portion 32.
  • the working channel 322 is for surgical instruments to pass through
  • the circuit channel 323 is for the camera 312 and the light source assembly 313 to pass through.
  • the camera 312 includes a camera wire 3121, and the camera wire 3121 is connected to the external imaging device through the circuit channel 323, so that medical staff can see the operation process in real time, increasing the success rate of the operation.
  • the light source assembly 313 is distributed on both sides of the camera 312 to provide sufficient lighting, that is, the light source assembly 313 is distributed on both sides of the camera 312 to provide all-round illumination for the collection of the camera 312, so that the image collected by the external imaging device is clearer.
  • the ureteroscope comprises a tube mirror body 910 and an operating end 920, wherein the tube mirror body 910 is connected to the operating end 920, and by controlling and adjusting the operating end 920, the tube mirror body 910 enters the patient's body to a predetermined position to perform corresponding operations.
  • the operating end 920 includes a lithotripsy operating unit, an imaging operating unit, a water injection operating unit and a water suction operating unit, which respectively control the lithotripsy, imaging, water injection and water suction operations of the tube mirror body 910 to complete the operation.
  • the operating end 920 includes a gripping portion 921, a water injection connection portion 922, a wire connection portion 923 and an instrument mounting portion 924.
  • the front end of the gripping portion 921 is connected to the tube mirror body 910, the instrument mounting portion 924 is arranged at the rear end of the gripping portion 921, and the water injection connection portion 922 is arranged on the side of the gripping portion 921 to connect a water injection device for irrigation, to clean the lens and the lesion, and to keep the field of view clear.
  • the tube mirror body 910 includes a head section 911, a middle section 912 and a terminal section 913.
  • the middle section 912 is connected to the head section 911 and the terminal section 913, that is, the middle section 912 is located between the head section 911 and the terminal section 913.
  • the head section 911, the middle section 912 and the terminal section 913 are suitable for integrally forming.
  • the terminal section 913 is suitable for extending from the rear end of the middle section 912 to the operating end 920 to be connected between the middle section 912 and the operating end 920.
  • the end of the head section 911 is a slope 9111, that is, the slope 9111 of the head section 911 extends from the end of the head section 911 to the middle section 912, which is convenient for treatment.
  • the slope 9111 has a slope top 91111 and a slope end 91112, that is, the head section 911 extends from the slope top 91111 to the slope end 91112, and then connects with the middle section 912 at the slope end 91112.
  • the tube mirror body 910 has a working channel 9101 and at least one drainage channel 9102.
  • the working channel 9101 is provided at intervals on the tube mirror body 910, wherein the working channel 9101 is used for placing optical fiber and water injection, that is, the optical fiber and water injection share the working channel 9101.
  • the working channel 9101 extends from the top of the head section 911 of the tube mirror body 910 to the end of the end section 913, that is, the working channel 9101 is longitudinally formed in the entire tube mirror body 910.
  • the end section 913 extends from the connection with the middle section 912 to the operating end 920, and is connected to the operating end 920 to perform corresponding operations. That is, as the end section 913 extends, the working channel 9101 and the guide channel 9102 both extend to the operating end 920 to perform operations such as water injection, stone crushing and drainage.
  • the instrument mounting portion 924 and the water injection connection portion 922 are both connected to the working channel 9101 for water injection and installation of surgical instruments such as lithotripsy optical fibers.
  • the wire connection portion 923 is implemented as a wire to connect the camera and lighting element to a power source for visualization operation.
  • the operating end 920 also has a suction and discharge port 925 and a suction control port 926, and the suction and discharge port 925 and the suction control port 926 are arranged on the grip portion 921.
  • the suction and discharge port 925 and the suction control port 926 are both connected to the drainage channel 9102.
  • the tube mirror body 910 and the operating end 920 are suitable for integral connection, and also suitable for detachable connection, so as to facilitate replacement and reduce costs.
  • the tube mirror body 910 also includes a tube wall 914, the working channel 9101 extends from the top to the end of the tube wall 914, the guide groove 91021 is arranged on the surface of the middle part of the tube wall 914, and the guide groove 91021 has a predetermined distance from the top and the end of the tube wall 914, and does not extend to the end of the tube mirror body 910, so that both ends of the tube mirror body 910 are closed structures, which can ensure the strength while guiding drainage, and the guide channel 91022 extends from one end of the guide groove 91021 to the end of the tube wall 914, wherein the guide channel 91022 located at the rear section of the tube wall 914 is separated from the working channel 9101, and the working channel 9101, the guide groove 91021 and the guide channel 91022 are all arranged longitudinally along the tube wall 914.
  • the endoscopic body 910 is a cylindrical structure with a smooth and rounded outer wall, which is convenient for entering the ureter.
  • the tube wall 914 includes a first side wall 9141 and a second side wall 9142, the first side wall 9141 and the second side wall 9142 are connected to form a cylindrical tube wall of the tube mirror body 910, wherein the first side wall 9141 and the second side wall 9142 are integrally formed to form the tube wall 914.
  • the length of the first side wall 9141 is greater than the length of the second side wall 9142.
  • the top of the bevel 91111 is located at the top end of the first side wall 9141, and the end of the bevel 91112 is located at the top end of the second side wall 9142, wherein the top of the bevel 91111 is a plane structure, that is, the plane structure of the top of the bevel 91111 extends to the working channel 9101, so as to facilitate wiring and installation of imaging equipment.
  • the end face of the working channel 9101 is elliptical, and the elliptical end face enlarges the water injection port, which is beneficial for water injection and at the same time facilitates the formation of circulation and is beneficial for drainage.
  • the ureteroscope further includes an imaging element 930 and at least one lighting element 940, wherein the imaging element 930 and the lighting element 940 are adjacently installed at the top of the bevel 91111 of the head section 911 of the tube mirror body 910, that is, the first side wall 9141 located outside the working channel 9101.
  • the imaging element 930 is suitable for being implemented as an electronic scope or a fiberscope, and the two lighting elements 940 are installed on both sides of the imaging element 930 to provide light so that the imaging element 930 can be clearly imaged, so that the operator can perform related operations under visualization conditions.
  • the optical fiber channel and the water inlet channel share one, that is, the working channel 9101.
  • space is saved, making the size of the tube mirror body 910 smaller.
  • the process is simpler, while leaving more tube wall, which also makes the wiring of the imaging element 930 more flexible.
  • the working channel 9101 is relatively close to the second side wall 9142, that is, the working channel 9101 is not arranged in the middle of the tube mirror body 910, but is arranged close to the side of the tube mirror body 910, so that the thickness of the first side wall 9141 is greater than the thickness of the second side wall 9142, so as to facilitate the setting of the drainage channel 9102 on the first side wall 9141, which is beneficial to ensure the strength of the tube mirror body 910 while making the size of the tube mirror body 910 smaller.
  • the drainage channel 9102 includes at least one guide groove 91021 and at least one guide channel 91022.
  • the guide groove 91021 and the guide channel 91022 are connected.
  • a plurality of the guide grooves 91021 are arranged at intervals on the surface of the middle section 912 of the tube mirror body 910, and the guide channel 91022 is arranged inside the tube wall of the last section 913 of the tube mirror body 910.
  • the guide groove 91021 is provided on the surface of the first side wall 9141 of the middle section 912, the guide channel 91022 is provided inside the first side wall 9141 of the end section 913, and the guide groove 91021 is connected to the guide channel 91022. Moreover, the guide groove 91021, the guide channel 91022 and the working channel 9101 are separated by the tube wall, that is, the guide groove 91021, the guide channel 91022 and the working channel 9101 are not connected.
  • the guide groove 91021 is arranged in the middle section 912 of the tube mirror body 910, and has a predetermined distance from the head section end and the tail section end of the tube mirror body 910. While ensuring drainage, it can increase the strength of the tube mirror body 910 and increase its service life.
  • three guide grooves 91021 and one guide channel 91022 are arranged at intervals, and the three guide grooves 91021 are arranged at intervals on the first side wall 9141 of the endoscopic body 910, and the three guide grooves 91021 are all connected to the guide channel 91022.
  • the endoscopic body 910 of the ureteroscope enters the ureter, the liquid around the head of the endoscopic body 910 enters the guide groove 91021 under the action of negative pressure, and then enters the guide channel 91022, and then is discharged out of the body.
  • the size of the guide groove 91021 is small, and stones are not easy to pass through. Therefore, the ureteroscope in the present invention is mainly used for drainage, and very small gravel can be discharged through the channel, and larger stones are blocked outside.
  • the size of the guide channel 91022 is larger than the size of the guide groove 91021. The liquid entering the guide channel 91022 through multiple guide grooves 91021 can be discharged more quickly, forming a continuous drainage working mode, which improves work efficiency.
  • the size of the guide channel 91022 is larger than the size of the guide groove 91021. Even if a small amount of gravel enters the guide channel 91022 through multiple guide grooves 91021, it can be immediately discharged without clogging.
  • the provision of multiple guide grooves 91021 can also prevent the normal drainage of the other guide grooves when one guide groove is blocked, which is also conducive to preventing clogging.
  • the guide groove 91021 and the guide channel 91022 are connected to form the drainage channel 9102.
  • the drainage channel 9102 presents a structure that is small on the outside and large on the inside, so that a small amount of gravel particles entering can also be discharged smoothly without clogging.
  • no large stone removal channel is provided, which greatly reduces the size of the ureteroscope body 910 of the ureteroscope, making it easy to be placed in the ureter. This is because in some surgeries, due to the powdered stone, or the small particles after the stone is crushed, it is not necessary to suck out the stone during the operation, but it is naturally discharged after the operation. Therefore, there is no need to remove the stone, and the present invention omits a large stone removal channel, so that the overall size is reduced, making it easier to enter and reducing the difficulty of the operation.
  • the tube mirror body 910 of the above preferred embodiment of the present invention can also be improved and deformed accordingly.
  • FIG33 a second preferred embodiment of the present invention is shown. On the basis of the above embodiment, this embodiment is provided with an anti-blocking member 915 outside each guide groove 91021 to prevent gravels from entering the guide groove 91021.
  • the anti-blocking member 915 is implemented as a gauze.
  • the finer and denser gauze can block the gravel outside, which is helpful to prevent the gravel from entering.
  • the edge of the anti-blocking member 915 is pasted or hot-pressed on the tube wall of the tube mirror body 910, so that the anti-blocking member 915 covers the drainage groove 91021 to play a blocking role.
  • the anti-blocking member 915 can also be a mesh structure of other materials, which is integrally formed with the tube wall 914.
  • the endoscopic body 910 has a certain hardness, and the size of the entire endoscopic body 910 is relatively small.
  • the diameter of the endoscopic body is less than 3 mm, and it can be directly placed into the ureter without the need for a sheath to expand. The application is simpler and more convenient.
  • the smaller size of the endoscopic body 910 in the present invention will not damage the ureter, and can achieve better clinical effects, which is beneficial to the patient's recovery.
  • the width of the guide groove 91021 in each embodiment of the present invention is 0.92 mm
  • the length of the guide groove 91021 is 2-20 mm, preferably 10 mm, wherein the diameter of the guide channel is 0.95-1 mm, and the diameter of the guide groove is 0.91-0.95 mm.
  • the size and number of the guide grooves 91021 and the size and number of the guide channels 91022 can be appropriately adjusted. For example, when the number of the guide grooves 91021 is large, their size can be appropriately reduced.
  • the number and position of the guide grooves 91021 are not limited by the present embodiment. Those skilled in the art can understand that the guide grooves 91021 can also be set at other positions of the tube mirror body 910, such as the second side wall 9142, or part of the first side wall 9141 and part of the second side wall 9142.
  • the first preferred embodiment is modified, as shown in Figures 34 to 35B, five guide grooves 91021A and one guide channel 91022A are arranged at intervals, and the five guide grooves 91021A are all connected to the guide channel 91022A. Similar to the above embodiment, in this embodiment, the five guide grooves 91021A are all arranged on the first side wall 9141.
  • the lengths of the five guide grooves 91021A are different, that is, the lengths of the guide grooves 91021A do not need to be exactly the same, and can be adjusted accordingly to meet the drainage requirements of use.
  • the working channel 9101B is arranged in the middle of the tube mirror body 910, so that the thickness of the first side wall 9141B and the second side wall 9142B are close.
  • a drainage channel 9102B is arranged on each of the first side wall 9141B and the second side wall 9142B, that is, the drainage channel 9102B is arranged on two opposite surfaces of the tube mirror body 910B.
  • the drainage channel 9102B includes four guide grooves 91021B and two guide channels 91022B.
  • the four guide grooves 91021B are respectively and integrally arranged on the first side wall 9141B and the second side wall 9142B of the middle section 912 of the tube mirror body 910.
  • the two guide channels 91022B are respectively arranged on the first side wall 9141B and the second side wall 9142B of the last section 913.
  • the guide grooves 91021B and the guide channels 91022B located on the same side are connected to drain the accumulated fluid at the lesion site to the body of the tube.
  • the guide groove 91021 is arranged longitudinally along the tube mirror body 910 and has a predetermined length.
  • the guide groove 91021 with a predetermined length increases the water inlet space, has a faster drainage speed, and is not easily blocked by gravel.
  • the number and specific positions of the guide grooves 91021 are not limited, and the shape of the guide grooves 91021 can also be set to other shapes, such as multiple circular grooves arranged in multiple rows at intervals, or multiple square grooves, triangular grooves or other shapes arranged in multiple rows at intervals.
  • the guide grooves 91021 can also surround the circumference of the tube mirror body 910.
  • the guide groove 91021C of the present invention is provided with two, and the two guide grooves 91021C are connected to one guide channel 91022C.
  • the length and thickness of the first side wall 9141 are greater than the length and thickness of the second side wall 9142
  • the guide groove 91021C and the guide channel 91022C included in the drainage channel 9102C are both located on the first side wall 9141, and the working channel 9101 is close to the second side wall 9142.
  • a tube mirror body 910D includes a head section 911D, a middle section 912D and a terminal section 913D, wherein the middle section 912D is longitudinally connected between the head section 911D and the terminal section 913D.
  • the first side wall 9141D and the second side wall 9142D are integrally formed to form the tube wall 914D, and the tube mirror body 910D has a water injection channel 9101D and an optical fiber channel 9103D, wherein the water injection channel 9101D and the optical fiber channel 9103D are arranged at intervals on the tube wall 914D, and the two form the working channel of the ureteroscope.
  • the tube mirror body 910D also has a drainage channel 9102D, and the drainage channel 9102D includes two guide grooves 91021D and a guide channel 91022D.
  • the guide grooves 91021D are connected to the guide channel 91022D.
  • the size of the guide channel 91022D is approximately equal to four times the size of each guide groove 91021D, and the guide grooves 91021D are located on the tube wall surface of the middle section 912D, and the guide channel 91022D is located inside the tube wall of the last section 913D, and the guide grooves 91021D and the guide channel 91022D are separated from the water injection channel 9101D and the optical fiber channel 9103D.
  • a tube mirror body 910E includes a head section 911E, a middle section 912E and a terminal section 913E, wherein the middle section 912E is suitable for integrally forming with the head section 911E and the terminal section 913E, and the middle section 912E is located between the head section 911E and the terminal section 913E.
  • the tube mirror body 910E has a working channel 9101E and a drainage channel 9102E.
  • the working channel 9101E is arranged on the first side wall 9141E, and the drainage channel 9102E is arranged on the second side wall 9142E. That is to say, compared with the above embodiment, the length of the first side wall 9141E in this embodiment is greater than that of the second side wall 9142E, but the thickness of the first side wall 9141E is less than that of the second side wall 9142E, that is, the working channel 9101E is arranged close to the second side wall 9141E.
  • the working channel 9101E is used for water injection and installation of lithotripsy optical fiber or other surgical instruments
  • the drainage channel 9102E includes two A guide groove 91021E and a guide channel 91022E, wherein the guide groove 91021E and the guide channel 91022E are communicated with each other, are respectively arranged at the middle section and the end of the tube mirror body 910E, and are spaced apart from the working channel 9101E.
  • An imaging element 930E and a second lighting element 940E are installed at the top of the second side wall 9142E, and the lighting elements 940E are distributed on both sides of the imaging element 930E.
  • the imaging element 930E and the lighting element 940E are installed on a thicker side wall, which is convenient for wiring and installation, and can ensure the strength of the tube mirror body 910E.
  • the working range of the extended optical fiber can be more clearly seen.

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Abstract

L'invention concerne un urétéroscope combiné courbé, un urétéroscope et un corps principal d'urétéroscope. L'urétéroscope combiné courbé comprend une gaine pliable et un noyau interne. La gaine pliable comprend un ensemble de courbure, un corps de gaine et une partie d'opération de gaine. Le corps de gaine s'étend à partir d'une extrémité de la partie d'opération de gaine. L'ensemble de courbure est relié au corps principal de gaine et est éloigné de la partie d'opération de gaine. Le noyau interne comprend un corps principal de noyau interne et une partie de liaison de noyau interne. Le corps principal de noyau interne s'étend à partir d'une extrémité de la partie de liaison de noyau interne et pénètre à travers la partie d'opération de gaine pour être situé à l'intérieur du corps principal de gaine, de telle sorte que la partie de liaison de noyau interne est hermétiquement reliée à la partie d'opération de gaine. L'urétéroscope comprend une extrémité d'opération et un corps principal d'urétéroscope relié à l'extrémité d'opération. Le corps principal d'urétéroscope comprend une section de tête, une section intermédiaire et une section arrière qui sont reliées de manière séquentielle. La section arrière est reliée entre la section intermédiaire et l'extrémité d'opération. Le corps principal d'urétéroscope est pourvu d'un canal de travail et d'un canal de drainage. Le canal de drainage comprend au moins une rainure de guidage espacée du canal de travail et au moins un canal de guidage en communication avec la rainure de guidage. La rainure de guidage et le canal de guidage sont disposés longitudinalement sur la surface de la section intermédiaire et à l'intérieur de la section arrière, respectivement. Le canal de travail est formé dans la section de tête, la section intermédiaire et la section arrière, et communique avec l'extrémité d'opération. Le canal de drainage est petit sur l'extérieur et est large sur l'intérieur, permettant uniquement à l'eau de passer à travers et d'empêcher le blocage. Cette conception permet au corps principal d'urétéroscope d'être plus petit de telle sorte qu'il peut être facilement inséré dans un uretère.
PCT/CN2023/125142 2022-11-17 2023-10-18 Urétéroscope combiné courbé, urétéroscope et corps principal d'urétéroscope WO2024104040A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202211440003.8 2022-11-17
CN202211439820.1A CN116019413A (zh) 2022-11-17 2022-11-17 输尿管镜及管镜主体
CN202211440003.8A CN115715664A (zh) 2022-11-17 2022-11-17 弯曲型组合式输尿管镜
CN202211439820.1 2022-11-17

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WO2024104040A1 true WO2024104040A1 (fr) 2024-05-23

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PCT/CN2023/125142 WO2024104040A1 (fr) 2022-11-17 2023-10-18 Urétéroscope combiné courbé, urétéroscope et corps principal d'urétéroscope

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WO (1) WO2024104040A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040204629A1 (en) * 2003-04-08 2004-10-14 Knapp Tracey E. Ureteral access sheath
CN103405261A (zh) * 2013-07-19 2013-11-27 杭州好克光电仪器有限公司 一种头端可弯曲的输尿管肾镜
CN110251203A (zh) * 2019-07-26 2019-09-20 张建军 一种具有可旋转内鞘管的输尿管软镜鞘套件
CN110742675A (zh) * 2019-11-25 2020-02-04 张保 镜鞘一体输尿管软镜
CN114098589A (zh) * 2020-09-01 2022-03-01 宁波新跃医疗科技股份有限公司 一体式免鞘输尿管镜及其制造方法
CN115715664A (zh) * 2022-11-17 2023-02-28 宁波市第一医院 弯曲型组合式输尿管镜
CN116019413A (zh) * 2022-11-17 2023-04-28 宁波市第一医院 输尿管镜及管镜主体

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040204629A1 (en) * 2003-04-08 2004-10-14 Knapp Tracey E. Ureteral access sheath
CN103405261A (zh) * 2013-07-19 2013-11-27 杭州好克光电仪器有限公司 一种头端可弯曲的输尿管肾镜
CN110251203A (zh) * 2019-07-26 2019-09-20 张建军 一种具有可旋转内鞘管的输尿管软镜鞘套件
CN110742675A (zh) * 2019-11-25 2020-02-04 张保 镜鞘一体输尿管软镜
CN114098589A (zh) * 2020-09-01 2022-03-01 宁波新跃医疗科技股份有限公司 一体式免鞘输尿管镜及其制造方法
CN115715664A (zh) * 2022-11-17 2023-02-28 宁波市第一医院 弯曲型组合式输尿管镜
CN116019413A (zh) * 2022-11-17 2023-04-28 宁波市第一医院 输尿管镜及管镜主体

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