WO2024007568A1 - 可弯曲导引鞘管及导引装置 - Google Patents

可弯曲导引鞘管及导引装置 Download PDF

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Publication number
WO2024007568A1
WO2024007568A1 PCT/CN2023/071899 CN2023071899W WO2024007568A1 WO 2024007568 A1 WO2024007568 A1 WO 2024007568A1 CN 2023071899 W CN2023071899 W CN 2023071899W WO 2024007568 A1 WO2024007568 A1 WO 2024007568A1
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WO
WIPO (PCT)
Prior art keywords
tenon
plug
mortise
rotating
opening
Prior art date
Application number
PCT/CN2023/071899
Other languages
English (en)
French (fr)
Inventor
张钿标
毛延发
韩亚雄
Original Assignee
深圳库珀医疗股份有限公司
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Filing date
Publication date
Application filed by 深圳库珀医疗股份有限公司 filed Critical 深圳库珀医疗股份有限公司
Publication of WO2024007568A1 publication Critical patent/WO2024007568A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
    • A61M25/0133—Tip steering devices
    • A61M25/0147—Tip steering devices with movable mechanical means, e.g. pull wires
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
    • A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0043—Catheters; Hollow probes characterised by structural features
    • A61M25/0045—Catheters; Hollow probes characterised by structural features multi-layered, e.g. coated
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
    • A61M25/0082—Catheter tip comprising a tool
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like
    • A61M25/0662—Guide tubes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M3/00—Medical syringes, e.g. enemata; Irrigators
    • A61M3/02—Enemata; Irrigators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
    • A61M25/0082—Catheter tip comprising a tool
    • A61M2025/0096—Catheter tip comprising a tool being laterally outward extensions or tools, e.g. hooks or fibres
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
    • A61M25/0133—Tip steering devices
    • A61M2025/0161—Tip steering devices wherein the distal tips have two or more deflection regions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like
    • A61M25/0662—Guide tubes
    • A61M2025/0681—Systems with catheter and outer tubing, e.g. sheath, sleeve or guide tube
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like
    • A61M25/0662—Guide tubes
    • A61M2025/0687—Guide tubes having means for atraumatic insertion in the body or protection of the tip of the sheath during insertion, e.g. special designs of dilators, needles or sheaths
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2210/00—Anatomical parts of the body
    • A61M2210/10—Trunk
    • A61M2210/1078—Urinary tract
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2210/00—Anatomical parts of the body
    • A61M2210/10—Trunk
    • A61M2210/1078—Urinary tract
    • A61M2210/1082—Kidney

Definitions

  • the present application belongs to the field of medical technology, and in particular relates to a flexible guiding sheath and a guiding device.
  • Flexible ureteroscopic lithotripsy uses a thin scope with a diameter of about 3mm to insert into the ureter through the urethra and bladder to crush ureteral stones or kidney stones and remove them.
  • the guiding sheath is a commonly used consumable in flexible ureteroscopy surgery. It is used to establish a channel from the outside of the body through the urethra and ureter directly into the renal pelvis. The flexible ureteroscope is guided directly into the surgical area through the guiding sheath, allowing for convenient operations without being affected by the curvature and thickness of the ureter and urethra.
  • the main body of the guiding sheath used in flexible ureteroscopy surgery is a relatively tough pipe, which usually emphasizes compression and anti-torsion properties, so that after being inserted into the human body along the guide wire, the guiding sheath can be passed
  • the toughness of the guide sheath can relatively straighten the curved part of the ureter, thereby facilitating the entry and exit, rotation and other operations of the endoscope.
  • This application provides a flexible guiding sheath and a guiding device in order to solve the technical problems in the prior art that the flexible guiding sheath has high toughness and cannot be bent.
  • a flexible guiding sheath including a flexible tube section, an intermediate tube section and a sheath joint.
  • the intermediate tube section is connected between the flexible tube section and the sheath joint. between the sheath joints;
  • the flexible tube section includes at least two mortise-and-tenon connectors, and each of the mortise-and-tenon connectors is sequentially inserted along the axial direction of the middle tube section;
  • the flexible tube section is used to When subjected to lateral force, the relative sliding between the mortise and tenon connectors causes axial bending relative to the middle pipe section.
  • An embodiment of the present application also provides a guiding device, which includes a dilator and the above-mentioned flexible guiding sheath.
  • the dilator passes through the flexible guiding sheath and is connected to the sheath joint.
  • the flexible guiding sheath of the present application divides the flexible guiding sheath into three parts: a flexible tube section, an intermediate tube section and a sheath joint.
  • a flexible tube section By arranging the flexible tube section into at least two sections along the middle tube section
  • the mortise and tenon connectors are inserted sequentially in the axial direction, so that the flexible guiding sheath can be bent into a required shape, so that the flexible guiding sheath can be close to the stone fragments in the kidney through the flexible tube section.
  • the stone fragments are flushed out of the flexible guiding sheath by the water injected during the operation. This improves the discharge efficiency of the stone fragments and avoids situations such as stone powder affecting the field of vision or accumulation in the kidneys that affect the efficiency of the operation. It can also avoid the uncertainty of natural stone removal and improve the stone clearance rate.
  • Figure 1 is a schematic structural diagram of a flexible guiding sheath provided by an embodiment of the present application.
  • Figure 2 is a schematic structural diagram of a flexible guiding sheath provided by another embodiment of the present application.
  • Figure 3 is a schematic structural diagram of the mortise and tenon connector of the flexible guide sheath tube in Figure 2 of the present application.
  • Figure 4 is a schematic structural diagram of a flexible guiding sheath provided by yet another embodiment of the present application.
  • Figure 5 is a schematic structural diagram of the mortise and tenon connector of the flexible guide sheath tube in Figure 4 of the present application.
  • Figure 6 is a schematic structural diagram of a flexible guiding sheath provided by yet another embodiment of the present application.
  • Figure 7 is a schematic structural diagram of the mortise and tenon connector of the flexible guide sheath tube in Figure 6 of the present application.
  • Figure 8 is a schematic structural diagram of a guiding device provided by an embodiment of the present application.
  • Second rotating block 1112. Two rotating grooves, 11121, second opening, 1113, third stopper, 1114, third rotating block, 1115, third rotating groove, 11151, third opening, 1116, first card slot, 1117, second card slot , 1118.
  • First buckle 1119.
  • Second buckle 22.
  • First protective layer 23.
  • Support structure layer 24.
  • Second protective layer 23.
  • the flexible guiding sheath includes a flexible tube section 1, an intermediate tube section 2, and a sheath joint 3.
  • the intermediate tube section 2 Connected between the flexible tube section 1 and the sheath joint 3; the flexible tube section 1 includes at least two mortise-and-tenon connectors 11, each of the mortise-and-tenon connectors 11 extends along the middle tube section 2
  • the flexible pipe section 1 is inserted in sequence in the axial direction; the flexible pipe section 1 is used to bend axially relative to the middle pipe section 2 through the relative sliding between the mortise and tenon plug-in parts 11 when subjected to lateral force.
  • connection method between the middle pipe section 2, the flexible pipe section 1 and the sheath joint 3 includes but is not limited to one-piece molding, bonding, welding, snap connection or threaded connection.
  • connection method only needs to achieve the effect of stable connection between the middle pipe section 2, the flexible pipe section 1 and the sheath joint 3.
  • the middle pipe section 2 includes a first protective layer 22, a supporting structure layer 23 and a second protective layer 24.
  • the first protective layer 22 is coated on the supporting structure layer.
  • the second protective layer 24 covers the inner side wall of the spring layer.
  • the support structure layer 23 is a spring layer
  • the first protective layer 22 is a PEBAX (blocked polyether amide resin) material layer
  • the second protective layer 24 is a PTFE (polytetrafluoroethylene) material layer.
  • the first protective layer 22 and the second protective layer 24 are respectively coated on the outer surface and the inner surface of the supporting structure layer 23 to protect the supporting structure layer 23 .
  • the surfaces of the first protective layer 22 and the second protective layer 24 that are in contact with the outside world further include a lubricating coating.
  • the first protective layer covering the outer surface of the support structure layer 23 The lubricating coating provided on 22 is used for smoother entry and exit when the middle pipe section 2 itself is inserted into the ureter; the lubricating coating provided on the second protective layer 24 covering the inner surface of the supporting structure layer 23 is used for This enables smoother entry and exit when the soft mirror or other instruments are inserted into the middle tube section 2 .
  • the flexible guiding sheath is divided into three parts: the flexible tube section 1, the intermediate tube section 2, and the sheath joint 3.
  • the support structure layer 23 of the intermediate tube section 2 is a spring layer.
  • the middle tube section 2 retains the toughness of the guiding sheath tube in the prior art, but on this basis, a flexible tube section 1 is added.
  • the mortise and tenon connector 11 is inserted into the tube section 2 axially and sequentially, so that the flexible guiding sheath can be bent into the required shape, so that the flexible guiding sheath can be close to the kidney through the flexible tube section 1
  • the stone fragments are then flushed out of the flexible guiding sheath through the water injected during the operation. This improves the discharge efficiency of the stone fragments and avoids the effects of stone powder affecting the field of vision or accumulation in the kidneys.
  • the situation of surgical efficiency can also avoid the uncertainty of natural stone removal and improve stone clearance.
  • the flexible pipe section 1 further includes an elastic material layer 12 covering the surface of the mortise and tenon connector 11 .
  • the elastic material layer 12 is used to limit the movement of the mortise and tenon connector 11 in the radial direction of the bendable pipe section 1, so as to constrain the mortise and tenon connector 11 so that they do not move with each other. It is detached and deformed when the flexible pipe section 1 is bent, and is always covered on the surface of the mortise and tenon connector 11 .
  • the elastic material layer 12 can be covered on the outer surface and/or the inner surface of the mortise-and-tenon connector 11 to prevent the mortise-and-tenon connector 11 from directly contacting the outside and causing interference.
  • the innermost layer and the outermost layer of the flexible pipe section 1 further include a lubricating coating, which is used to make the flexible pipe section 1 smoother when being inserted or being inserted.
  • the mortise and tenon plug connector 11 includes a first body 1101, at least two first plug-in parts 1102 and at least two second plug-in parts 1103, so The first plug-in part 1102 and the second plug-in part 1103 are symmetrically connected on opposite sides of the first body 1101; a space is formed between the two first plug-in parts 1102 for all adjacent ones.
  • the second plug-in part 1103 of the mortise-and-tenon plug connector 11 is inserted into the first plug-in chute 1104 and slides relatively therebetween; a space is formed between the two second plug-in parts 1103 for the adjacent mortise and tenon joints.
  • the first plug portion 1102 of the plug connector 11 is inserted into and relatively slid into the second plug chute 1105 .
  • the first body 1101 can be an annular structure, a sheet structure or other shapes, as long as the bending of the flexible pipe section 1 can be achieved when the mortise and tenon connector 11 is stretched and/or contracted. Just bend it.
  • the first body 1101 has an annular structure, the first plug-in part 1102 and the first plug-in chute 1104 are distributed on one side of the first body 1101, and the second plug-in part 1103 and the first plug-in chute 1104 are distributed on one side of the first body 1101. Two plug-in slides 1105 are distributed on the other side of the first body 1101 .
  • the plurality of first plug-in parts 1102 are plugged into the second plug-in chute 1105 and can be connected to the first plug-in part 1102
  • the second plug-in chute 1105 slides in the second plug-in chute 1105
  • the second plug-in part 1103 is plugged into the first plug-in chute 1104 and can slide in the first plug-in chute 1104, so that through the above-mentioned sliding connection
  • the relationship makes a bendable tubular structure formed between each mortise and tenon connectors 11 .
  • the first plug portion 1102 includes a first plug 11021 and a first connection connected between the first body 1101 and the first plug 11021.
  • the second plug portion 1103 includes a second plug 11031 and a second connecting section 11032 connected between the first body 1101 and the second plug 11031;
  • the first plug chute 1104 There is a first limiting opening 11041 for the second connecting section 11032 to pass through;
  • the second plug-in chute 1105 is provided with a second limiting opening 11051 for the first connecting section 11022 to pass through;
  • the maximum width of the first plug 11021 is greater than the width of the second limiting opening 11051; when the flexible pipe section 1 is bent When folded, the first plug 11021 slides relatively along the second plug chute 1105;
  • the maximum width of the second plug 11031 is greater than the width of the first limiting opening 11041; in the flexible pipe section 1 When bent, the second plug 11031 slides relatively along the first plug
  • the maximum width of the first plug 11021 is greater than the width of the second limiting opening 11051, and the second The limiting opening 11051 acts as a limiting function to prevent the first plug-in part 1102 from being separated from the second plug-in chute 1105; the maximum width of the second plug 11031 is greater than the width of the first limiting opening 11041.
  • the first limiting opening 11041 serves as a limiting function to prevent the second plug-in part 1103 from being separated from the first plug-in chute 1104.
  • the maximum width of the first plug 11021 is less than or equal to the width of the second plug-in chute 1105, so that The first plug 11021 can slide in the second plug chute 1105; the maximum width of the second plug 11031 is less than or equal to the width of the first plug chute 1104, so that the second plug 11031 can slide in the first plug-in slide 1104.
  • the maximum width of the first connecting section 11022 is smaller than the width of the second limiting opening 11051, so that at the The first plug 11021 slides along the second plug
  • the maximum width of the second connecting section 11032 is smaller than the width of the first limiting opening 11041, so that the first connecting section 11022 slides in the second limiting opening 11051.
  • the first plug 11021 is provided with a first arc surface 11023 at one end away from the first body 1101, and the second plug 11031 is away from the first body.
  • 1101 is provided with a second arc-shaped surface 11033 at one end
  • the second plug-in chute 1105 is provided with a second arc-shaped groove 11052 at one end close to the first body 1101 to match the first arc-shaped surface 11023.
  • a first arc-shaped groove 11042 matching the second arc-shaped surface 11033 is provided at one end of the plug-in chute 1104 close to the first body 1101, and the second limiting opening 11051 is formed between the two second plugs 11031.
  • the first plug 11021 can rotate in the second plug chute 1105
  • the first limiting opening 11041 is formed between the two first plugs 11021
  • the second plug 11031 can be positioned therein.
  • the first plug-in chute 1104 rotates inside.
  • At least two annular mortise-and-tenon connectors 11 are provided that are inserted into each other, and the mortise-and-tenon connectors 11 are semicircular concave-convex mortise and tenon structures, thereby realizing the bendable pipe section. 1. It has a universal bending effect, and can make the flexible tube segment 1 expand and contract within a certain limit, so that the sheath opening of the flexible guiding sheath can more conveniently approach the direction of the stones in the kidney.
  • the mortise and tenon connector 11 includes a second body 1106, a first rotation groove 1107 provided on the first side of the second body 1106, and a first rotation groove 1107 connected to the first side of the second body 1106.
  • the first opening 11071 passes through the first stopper 1108 of the mortise and tenon connector 11, and the first rotation groove 1107 is used to accommodate the first rotating block 1109 of the adjacent mortise and tenon connector 11.
  • the maximum width of the first rotating block 1109 is greater than the width of the first opening 11071; when the flexible pipe section 1 is bent, the first rotating block 1109 and the first rotating groove 1107 rotate relative to each other, When the first rotating blocks 1109 of two adjacent mortise-and-tenon connectors 11 are abutted by the edge of the first opening 11071, the adjacent two The mortise and tenon connector 11 stops rotating.
  • the maximum width of the first rotating block 1109 is greater than the width of the first opening 11071, so the first rotating block 1109 can be embedded in the first rotating groove 1107 and rotate without being disengaged, and thus The first rotating block 1109 is realized to rotate in the first rotating groove 1107; the first stopper 1108 is used to limit the rotation angle between the two mortise and tenon connectors 11.
  • the mortise and tenon connector 11 further includes a second stopper 1110 connected to the inner wall of the first rotation groove 1107, and a second stopper 1110 connected to the inner wall of the first rotation groove 1107.
  • the first side of the stopper 1110 is the second rotating block 1111 located in the first rotating groove 1107; the first rotating block 1109 is provided with a second rotating groove 1112, and the second rotating groove 1112 is provided with a deflection
  • the first opening 11071 is provided and is used for the second opening 11121 for the second stopper 1110 of the adjacent tenon and tenon plug connector 11 to pass through; the second rotation groove 1112 is used for accommodating all adjacent ones.
  • the second rotating block 1111 of the mortise and tenon connector 11 the maximum width of the second rotating block 1111 is greater than the width of the second opening 11121; when the flexible pipe section 1 is bent, the first rotating block The block 1109 rotates relative to the first rotation groove 1107, and the second rotation block 1111 rotates relative to the second rotation groove 1112.
  • the rotating block 1109 contacts the edge of the first opening 11071 or the second rotating block 1111 contacts the edge of the second opening 11121 stop rotating.
  • the maximum width of the second rotating block 1111 is greater than the width of the second opening 11121, so the second rotating block 1111 can be embedded in the second rotating groove 1112 and rotate without being disengaged; so
  • the first rotating groove 1107 and the second rotating groove 1112 are arc-shaped in cross-section, the first rotating block 1109 and the second rotating block 1111 are arc-shaped in cross-section, and the first rotating block 1109 and the The cross-section of the first rotation groove 1107 is matched, and the cross-section of the second rotation groove 1112 is matched with the second rotation groove 1112. Therefore, when the first rotation block 1109 rotates in the first rotation groove 1107, , the second rotating block 1111 can rotate in the second rotating groove 1112; the second stopper 1110 is used to limit the rotation angle between the two mortise and tenon connectors 11.
  • the mortise and tenon connector 11 also includes a The third stopper 1113 on the inner wall of the second rotation groove 1112, the third rotation block 1114 connected to the third stopper 1113 and located in the second rotation groove 1112; the second rotation block 1111 A third rotation groove 1115 is provided on the third rotation groove 1115, and a third opening 11151 is provided on the third rotation groove 1115 for the third stopper 1113 of the adjacent mortise and tenon connector 11 to pass through;
  • the rotation groove 1115 is used to accommodate the third rotation block 1114 of the adjacent mortise and tenon connector 11; the maximum width of the third rotation block 1114 is greater than the width of the third opening 11151; in the flexible pipe section 1.
  • the first rotating block 1109 and the first rotating groove 1107 rotate relatively
  • the second rotating block 1111 and the second rotating groove 1112 rotate relatively
  • the third rotating block 1114 and The third rotation groove 1115 rotates relatively
  • the first rotation block 1109 of two adjacent mortise and tenon connectors 11 abuts the edge of the first opening 11071
  • the second rotation block 1111 When the third rotating block 1114 contacts the edge of the second opening 11121 or the third opening 11151 , the two adjacent mortise and tenon connectors 11 stop rotating.
  • the maximum width of the third rotating block 1114 is greater than the width of the third opening 11151, so the third rotating block 1114 can be embedded in the third rotating groove 1115 and rotate without being detached;
  • the cross section of the third rotation groove 1115 is circular, and the cross section of the third rotation block 1114 is circular and matches the cross section of the third rotation groove 1115. Therefore, when the first rotation block 1109 is in the first rotation While rotating in the slot 1107, the second rotating block 1111 rotates in the second rotating slot 1112, and the third rotating block 1114 rotates in the third rotating slot 1115; the third stopper 1113 It is used to limit the rotation angle between the two mortise and tenon connectors 11.
  • the opening directions of the third opening 11151 and the second opening 11121 are arranged at a preset angle. It can be understood that the preset angle between the opening directions of the third opening 11151 and the second opening 11121 is 0 to 180 degrees. Preferably, the preset angle between the opening directions of the third opening 11151 and the second opening 11121 is 90 degrees.
  • At least two mortise-and-tenon connectors 11 that are plugged into each other are provided, and the mortise-and-tenon connectors 11 are circular concave-convex mortise and tenon structures, thereby improving the flexibility of the bendable pipe section 1
  • the bending angle allows the sheath opening of the flexible guiding sheath to more conveniently move toward the node in the kidney. Stone direction approaches.
  • the mortise and tenon connector 11 further includes a first slot 1116 and a second slot 1117 respectively provided on opposite sides of the second stopper 1110. ; Opposite sides of the second opening 11121 are respectively provided with a first buckle 1118 adapted to the first slot 1116 and a second buckle 1119 adapted to the second slot 1117;
  • first rotating block 1109 and the first rotating groove 1107 rotate relative to each other
  • second rotating block 1111 and the second rotating groove 1112 rotate relative to each other;
  • the second stopper 1110 of one of the mortise and tenon connectors 11 abuts against the edge of the second opening 11121, two adjacent mortise and tenon connectors 11 stop rotating; when the first When the buckle 1118 is engaged with the first groove 1116 or the second buckle 1119 is engaged with the second groove 1117, the relative rotation between two adjacent mortise and tenon connectors 11 The position is fixed.
  • first buckle 1118 and the second buckle 1119 are made of soft material, and the first buckle 1116 and the second buckle 1117 are made of hard material. Therefore, the first buckle 1118 The second buckle 1119 and the first slot 1116 and the second slot 1117 can be embedded in each other and separated from each other under a certain force. It can be understood that the first buckle 1118 and the second buckle 1119 can also be made of hard and/or soft materials, and the first slot 1116 and the second slot 1117 can also be made of soft and/or hard material.
  • first buckle 1118 and the first buckle 1116 can be embedded in each other and separated from each other under a certain force
  • the second buckle 1119 and the second buckle 1117 can be embedded in each other and The effect of mutual separation under a certain force is enough.
  • the first clamping slot 1116 and the second clamping slot 1117 can also be provided on opposite sides of the third stopper 1113.
  • the first buckle 1118 and the second buckle 1119 can also be provided on opposite sides of the third stopper 1113. It may be provided on opposite sides of the third opening 11151 .
  • first latching slot 1116 and the second latching slot 1117 and the corresponding first buckles 1118 and second buckles 1119 can be respectively provided on two adjacent mortise and tenon connectors.
  • the abutting surface of the two adjacent mortise and tenon connectors 11 can be fixed at a predetermined rotation position when the two adjacent mortise and tenon connectors 11 are rotated relative to each other.
  • slots such as the first slot 1116 and the second slot 1117) and buckles (such as the first buckle 1118 and the second buckle) are provided on the circular concave-convex mortise and tenon connector 11.
  • buckle 1119 as the flexible pipe section 1 bends to a preset angle, the flexible pipe section 1 enters a fixed angle state through the buckle of the slot. After the flexible scope in the flexible guiding sheath is withdrawn, the flexible tube section 1 remains in the fixed angle state, thereby facilitating the next step of negative pressure suction lithotripsy operation. If it is necessary to release the locking state, use a soft mirror to reversely bend to drive the bendable pipe section 1 to bend in the opposite direction, the slot buckle is released, and the flexible pipe section 1 is released from the fixed angle state.
  • an embodiment of the present application also provides a guiding device, including a dilator 4 and the above-mentioned flexible guiding sheath.
  • the dilator 4 passes through the flexible guiding sheath and the above-mentioned flexible guiding sheath.
  • the sheath connector 3 is connected. Specifically, the dilator 4 passes through the flexible tube section 1 , the intermediate tube section 2 and the sheath joint 3 of the flexible guiding sheath in sequence, and is connected to the sheath joint 3 .
  • the guiding device includes a flexible guiding sheath and a dilator 4 that passes through the flexible guiding sheath and is connected to the sheath joint 3 of the flexible guiding sheath.
  • the flexible guiding sheath is divided into three parts: a flexible tube section 1, an intermediate tube section 2, and a sheath joint 3.
  • the flexible tube section 1 is inserted sequentially along the axial direction of the intermediate tube section 2.
  • the mortise and tenon connector 11 is connected, so that the guiding device can be bent into the required shape, so that the guiding device can be close to the stone fragments in the kidney through the flexible tube section 1, and then the stones can be removed by the water injected during the operation.
  • the fragments are flushed out from the guiding device, which improves the efficiency of discharge of stone fragments, avoids situations such as stone powder affecting the field of vision or accumulating in the kidneys that affect the efficiency of the operation, and also avoids the uncertainty of natural stone removal. , improve stone clearance.

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Abstract

本申请提供一种可弯曲导引鞘管及导引装置，所述可弯曲导引鞘管的中间管段连接在可弯曲管段与鞘管接头之间；可弯曲管段包括至少两个榫卯插接件，各榫卯插接件沿中间管段轴向顺次插接；可弯曲管段用于在受到侧向力时，通过榫卯插接件之间的相对滑动相对于中间管段轴向发生弯折。本申请通过将可弯曲管段设置为至少两个沿中间管段轴向插接的榫卯插接件，从而使可弯曲导引鞘管能够靠近肾脏内的结石碎块，进而通过手术中灌注的水流将结石碎块冲出，从而提升了对结石碎块的排出效率，避免了结石粉末影响视野或在肾脏内堆积等影响手术效率的状况出现，提升结石清除率。

Description

可弯曲导引鞘管及导引装置 技术领域
本申请属于医疗技术领域，特别是涉及一种可弯曲导引鞘管及导引装置。
背景技术
输尿管软镜碎石术，是利用一条直径3mm左右的细镜，经过尿道、膀胱插入输尿管，将输尿管结石或肾脏结石击碎取出。导引鞘管是输尿管软镜手术常用的耗材，用来建立从体外经过尿道、输尿管，直接进入到肾盂的通道。输尿管软镜经过导引鞘管的引导直接进入手术区域，可以方便的进行相关操作，不受输尿管、尿道的弯曲状态、粗细程度影响。
目前，在输尿管软镜手术中使用的导引鞘管的主体是较有韧性的管道，其通常强调抗压、抗扭曲性能，以使得沿着导丝置入人体之后，可以通过导引鞘管的韧性将输尿管的弯曲部分相对拉直，进而方便内窥镜的进出、旋转等操作，发明人意识到，上述导引鞘管的不足之处在于：由于导引鞘管的韧性，其只能被放在输尿管上段或者刚进入肾盂的位置，形成与身体纵轴平行的通道，而无法弯曲进入肾盂、肾盏的更深处，因此难以接近手术中粉碎的结石，也无法通过手术中灌注的水流将结石碎块从导引鞘管中冲出，因此，输尿管软镜手术中对于结石碎块的清除效率低。
申请内容
本申请针对现有技术中的可弯曲导引鞘管韧性较高，无法弯曲等技术问题，提供了一种可弯曲导引鞘管及导引装置。
鉴于以上技术问题，本申请实施例提供一种可弯曲导引鞘管，包括可弯曲管段、中间管段以及鞘管接头，所述中间管段连接在所述可弯曲管段与所 述鞘管接头之间；所述可弯曲管段包括至少两个榫卯插接件，各所述榫卯插接件沿所述中间管段轴向顺次插接；所述可弯曲管段用于在受到侧向力时，通过所述榫卯插接件之间的相对滑动相对于所述中间管段轴向发生弯折。
本申请一实施例还提供了一种导引装置，包括扩张器以及上述可弯曲导引鞘管，所述扩张器穿过所述可弯曲导引鞘管与所述鞘管接头连接。
本申请的可弯曲导引鞘管，将可弯曲导引鞘管分为可弯曲管段、中间管段以及鞘管接头三个部分，通过将所述可弯曲管段设置为至少两个沿所述中间管段轴向顺次插接的榫卯插接件，从而使可弯曲导引鞘管可以弯曲为所需要的形状，从而使得可弯曲导引鞘管能够通过可弯曲管段靠近肾脏内的结石碎块，进而通过手术中灌注的水流将结石碎块从可弯曲导引鞘管冲出，如此，提升了对结石碎块的排出效率，避免了结石粉末影响视野或在肾脏内堆积等影响手术效率的状况出现，还可以避免自然排石的不确定性，提升结石清除率。
本申请的一个或多个实施例的细节在下面的附图和描述中提出，本申请的其他特征和优点将从说明书、附图以及权利要求变得明显。
附图说明
下面结合附图和实施例对本申请进一步说明。
图1是本申请一实施例提供的可弯曲导引鞘管结构示意图。
图2是本申请另一实施例提供的可弯曲导引鞘管结构示意图。
图3是本申请图2中的可弯曲导引鞘管的榫卯插接件结构示意图。
图4是本申请又一实施例提供的可弯曲导引鞘管结构示意图。
图5是本申请图4中的可弯曲导引鞘管的榫卯插接件结构示意图。
图6是本申请再一实施例提供的可弯曲导引鞘管结构示意图。
图7是本申请图6中的可弯曲导引鞘管的榫卯插接件结构示意图。
图8是本申请一实施例提供的导引装置的结构示意图。
说明书中的附图标记如下：
1、可弯曲管段，2、中间管段，3、鞘管接头，4、扩张器，11、榫卯插接件，12、弹性材料层，1101、第一本体，1102、第一插接部，1103、第二插接部，1104、第一插接滑槽，1105、第二插接滑槽，11021、第一插头，11022、第一连接段，11041、第一限位口，11031、第二插头，11032、第二连接段，11051、第二限位口，11023、第一弧形面，11033、第二弧形面，11052、第二弧形槽，11042、第一弧形槽，1106、第二本体，1107、第一转动槽，1108、第一挡块，1109、第一转动块，11071、第一开口，1110、第二挡块，1111、第二转动块，1112、第二转动槽，11121、第二开口，1113、第三挡块，1114、第三转动块，1115、第三转动槽，11151、第三开口，1116、第一卡槽，1117、第二卡槽，1118、第一卡扣，1119、第二卡扣，22、第一保护层，23、支撑结构层，24、第二保护层。
具体实施方式
为了使本申请所解决的技术问题、技术方案及有益效果更加清楚明白，以下结合附图及实施例，对本申请进行进一步的详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请。
需要理解的是，术语“上”、“下”、“左”、“右”、“前”、“后”、“中部”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为本申请的限制。
如图1所示，本申请一实施例提供了一种可弯曲导引鞘管，所述可弯曲导引鞘管包括可弯曲管段1、中间管段2以及鞘管接头3，所述中间管段2连接在所述可弯曲管段1与所述鞘管接头3之间；所述可弯曲管段1包括至少两个榫卯插接件11，各所述榫卯插接件11沿所述中间管段2轴向顺次插接；所述可弯曲管段1用于在受到侧向力时，通过所述榫卯插接件11之间的相对滑动相对于所述中间管段2轴向发生弯折。在一实施例中，所述中间管段2与所述可弯曲管段1及所述鞘管接头3的连接方式包括但不限于一体成型、粘接、焊接、卡扣连接或螺纹连接等连接方式的一种或多种，可以理解地，所述连接方式只要能实现所述中间管段2与所述可弯曲管段1及所述鞘管接头3稳固连接的效果即可。
在一实施例中，如图1所示，所述中间管段2包括第一保护层22、支撑结构层23及第二保护层24，所述第一保护层22包覆在所述支撑结构层23的外侧壁上，所述第二保护层24包覆在所述弹簧层的内侧壁上。进一步地，所述支撑结构层23为弹簧层，所述第一保护层22为PEBAX(嵌段聚醚酰胺树脂)材料层，所述第二保护层24为PTFE(聚四氟乙烯)材料层。可以理解地，所述第一保护层22和所述第二保护层24分别包覆在所述支撑结构层23的外表面和内表面，以对所述支撑结构层23进行保护。在一实施例中，所述第一保护层22和所述第二保护层24与外界接触的表面还包括润滑涂层，包覆在所述支撑结构层23外表面的所述第一保护层22上设置的润滑涂层用于在所述中间管段2自身置入输尿管时进出更加顺畅；包覆在所述支撑结构层23内表面的所述第二保护层24上设置的润滑涂层用于在软镜或其他器械被置入所述中间管段2时进出更加顺畅。
本申请实施例中，将可弯曲导引鞘管分为可弯曲管段1、中间管段2以及鞘管接头3三个部分，在上述实施例中，中间管段2的支撑结构层23为弹簧层，使得中间管段2保留了现有技术中的导引鞘管的韧性，但在该基础上，又增加了可弯曲管段1，通过将所述可弯曲管段1设置为至少两个沿所述中间 管段2轴向顺次插接的榫卯插接件11，从而使可弯曲导引鞘管可以弯曲为所需要的形状，从而使得可弯曲导引鞘管能够通过可弯曲管段1靠近肾脏内的结石碎块，进而通过手术中灌注的水流将结石碎块从可弯曲导引鞘管冲出，如此，提升了对结石碎块的排出效率，避免了结石粉末影响视野或在肾脏内堆积等影响手术效率的状况出现，还可以避免自然排石的不确定性，提升结石清除。
在一实施例中，如图1所示，所述可弯曲管段1还包括包覆在所述榫卯插接件11表面的弹性材料层12。可以理解地，所述弹性材料层12用于限制所述榫卯插接件11在所述可弯曲管段1径向的移动，以束缚所述榫卯插接件11以使其相互之间不脱离，并在所述可弯曲管段1弯折时发生形变，始终包覆在所述榫卯插接件11表面。所述弹性材料层12可以包覆在所述榫卯插接件11的外表面和/或内表面，避免所述榫卯插接件11直接与外部接触产生干涉。在一实施例中，所述可弯曲管段1最内层以及最外层还包括润滑涂层，用于在所述可弯曲管段1在插接或被插接时更为顺畅。
在一实施例中，如图2和图3所示，所述榫卯插接件11包括第一本体1101、至少两个第一插接部1102以及至少两个第二插接部1103，所述第一插接部1102以及所述第二插接部1103对称连接在所述第一本体1101的相对两侧；两个所述第一插接部1102之间形成用于供相邻的所述榫卯插接件11的第二插接部1103插入并相对滑动的第一插接滑槽1104；两个所述第二插接部1103之间形成用于供相邻的所述榫卯插接件11的第一插接部1102插入并相对滑动的第二插接滑槽1105。可以理解地，所述第一本体1101可以为环形结构，也可以为片状结构或其他形状，只要能实现所述榫卯插接件11拉伸和/或收缩时所述可弯曲管段1发生弯曲即可。优选地，所述第一本体1101为环形结构，所述第一插接部1102以及第一插接滑槽1104分布在所述第一本体1101一侧，所述第二插接部1103以及第二插接滑槽1105分布在所述第一本体1101另一侧。多个所述第一插接部1102与所述第二插接滑槽1105插接且可在所述第 二插接滑槽1105内滑动，所述第二插接部1103与所述第一插接滑槽1104插接且可在所述第一插接滑槽1104内滑动，从而，通过上述滑动连接关系使得各榫卯插接件11之间形成一个可弯曲的管状结构。
在一实施例中，如图2和图3所示，所述第一插接部1102包括第一插头11021以及连接在所述第一本体1101与所述第一插头11021之间的第一连接段11022；所述第二插接部1103包括第二插头11031以及连接在所述第一本体1101与所述第二插头11031之间的第二连接段11032；所述第一插接滑槽1104上设有供所述第二连接段11032穿过的第一限位口11041；所述第二插接滑槽1105设有供所述第一连接段11022穿过的第二限位口11051；在与并未弯折的所述可弯曲管段1的轴向垂直的方向上，所述第一插头11021的最大宽度大于所述第二限位口11051的宽度；在所述可弯曲管段1弯折时，所述第一插头11021沿所述第二插接滑槽1105相对滑动；所述第二插头11031的最大宽度大于所述第一限位口11041的宽度；在所述可弯曲管段1弯折时，所述第二插头11031沿所述第一插接滑槽1104相对滑动。可以理解地，在与并未弯折的所述可弯曲管段1的轴向垂直的方向上，所述第一插头11021的最大宽度大于所述第二限位口11051的宽度，所述第二限位口11051起限位作用，避免所述第一插接部1102脱离所述第二插接滑槽1105；所述第二插头11031的最大宽度大于所述第一限位口11041的宽度，所述第一限位口11041起限位作用，避免所述第二插接部1103脱离所述第一插接滑槽1104。可以理解地，在与并未弯折的所述可弯曲管段1的轴向垂直的方向上，所述第一插头11021的最大宽度小于或等于所述第二插接滑槽1105的宽度，从而所述第一插头11021可以在所述第二插接滑槽1105内滑动；所述第二插头11031的最大宽度小于或等于所述第一插接滑槽1104的宽度，从而所述第二插头11031可以在所述第一插接滑槽1104内滑动。可以理解地，在与并未弯折的所述可弯曲管段1的轴向垂直的方向上，所述第一连接段11022的最大宽度小于所述第二限位口11051的宽度，从而在所述第一插头11021沿所述第二插接滑 槽1105相对滑动时，所述第一连接段11022在所述第二限位口11051内滑动；所述第二连接段11032的最大宽度小于所述第一限位口11041的宽度，从而在所述第二插头11031沿所述第一插接滑槽1104相对滑动时，所述第二连接段11032在所述第一限位口11041内滑动。
在一实施例中，如图2和图3所示，所述第一插头11021远离所述第一本体1101一端设有第一弧形面11023，所述第二插头11031远离所述第一本体1101一端设有第二弧形面11033，所述第二插接滑槽1105靠近所述第一本体1101一端设有与第一弧形面11023匹配的第二弧形槽11052，所述第一插接滑槽1104靠近所述第一本体1101一端设有与第二弧形面11033匹配的第一弧形槽11042，两个所述第二插头11031之间形成所述第二限位口11051，所述第一插头11021可在所述第二插接滑槽1105内旋转，两个所述第一插头11021之间形成所述第一限位口11041，所述第二插头11031可在所述第一插接滑槽1104内旋转。
本申请实施例中，通过设置至少两个环形互相插接的榫卯插接件11，且所述榫卯插接件11为半圆型凹凸结合的榫卯结构，从而实现了所述可弯曲管段1万向弯曲的效果，且可以使所述可弯曲管段1在一定限度内伸缩，从而使得所述可弯曲导引鞘管的鞘口可以更方便的朝肾脏内的结石方向靠近。
在一实施例中，如图4和图5所示，所述榫卯插接件11包括第二本体1106、设置在所述第二本体1106第一侧的第一转动槽1107、连接在所述第二本体1106第二侧的第一挡块1108，以及连接在所述第一挡块1108的第二侧的第一转动块1109；所述第一转动槽1107上设有用于供相邻的所述榫卯插接件11的第一挡块1108穿过的第一开口11071，所述第一转动槽1107用于容纳相邻的所述榫卯插接件11的第一转动块1109；所述第一转动块1109的最大宽度大于所述第一开口11071的宽度；在所述可弯曲管段1弯折时，所述第一转动块1109与所述第一转动槽1107相对转动，在相邻两个所述榫卯插接件11的所述第一转动块1109被所述第一开口11071的边缘抵接时，相邻两个所述 榫卯插接件11停止转动。在一实施例中，所述第一转动块1109的最大宽度大于所述第一开口11071的宽度，因此所述第一转动块1109可以嵌入所述第一转动槽1107转动而不发生脱离，进而实现所述第一转动块1109在所述第一转动槽1107内转动；所述第一挡块1108用于限制两个所述榫卯插接件11之间的转动角度。
在一实施例中，如图4和图5所示，所述榫卯插接件11还包括连接在所述第一转动槽1107内侧壁上的第二挡块1110、连接在所述第二挡块1110第一侧且位于所述第一转动槽1107中的第二转动块1111；所述第一转动块1109上设有第二转动槽1112，所述第二转动槽1112上设有背离所述第一开口11071设置且用于供相邻的所述榫卯插接件11的第二挡块1110穿过的第二开口11121；所述第二转动槽1112用于容纳相邻的所述榫卯插接件11的第二转动块1111；所述第二转动块1111的最大宽度大于所述第二开口11121的宽度；在所述可弯曲管段1弯折时，所述第一转动块1109与所述第一转动槽1107相对转动，且所述第二转动块1111与所述第二转动槽1112相对转动，在相邻两个所述榫卯插接件11的所述第一转动块1109与所述第一开口11071的边缘抵接或所述第二转动块1111与所述第二开口11121的边缘抵接时，相邻两个所述榫卯插接件11停止转动。在一实施例中，所述第二转动块1111的最大宽度大于所述第二开口11121的宽度，因此所述第二转动块1111可以嵌入所述第二转动槽1112转动而不发生脱离；所述第一转动槽1107和所述第二转动槽1112截面为弧形，所述第一转动块1109和所述第二转动块1111截面为弧形，且所述第一转动块1109与所述第一转动槽1107截面相适配，所述第二转动槽1112与所述第二转动槽1112截面相适配，因此，在第一转动块1109在所述第一转动槽1107内转动的同时，所述第二转动块1111可以在所述第二转动槽1112内转动；所述第二挡块1110用于限制两个所述榫卯插接件11之间的转动角度。
在一实施例中，如图4和图5所示，所述榫卯插接件11还包括连接在所 述第二转动槽1112内侧壁上的第三挡块1113、连接在所述第三挡块1113上且位于所述第二转动槽1112中的第三转动块1114；所述第二转动块1111上设有第三转动槽1115，所述第三转动槽1115上设有用于供相邻的所述榫卯插接件11的第三挡块1113穿过的第三开口11151；所述第三转动槽1115用于容纳相邻的所述榫卯插接件11的第三转动块1114；所述第三转动块1114的最大宽度大于所述第三开口11151的宽度；在所述可弯曲管段1弯折时，所述第一转动块1109与所述第一转动槽1107相对转动，所述第二转动块1111与所述第二转动槽1112相对转动，且所述第三转动块1114与所述第三转动槽1115相对转动，在相邻两个所述榫卯插接件11的所述第一转动块1109与所述第一开口11071的边缘抵接、所述第二转动块1111与所述第二开口11121的边缘抵接或所述第三转动块1114与所述第三开口11151的边缘抵接时，相邻两个所述榫卯插接件11停止转动。在一实施例中，所述第三转动块1114的最大宽度大于所述第三开口11151的宽度，因此所述第三转动块1114可以嵌入所述第三转动槽1115转动而不发生脱离；所述第三转动槽1115截面为圆形，所述第三转动块1114截面为圆形且与所述第三转动槽1115截面相适配，因此，在第一转动块1109在所述第一转动槽1107内转动的同时，所述第二转动块1111在所述第二转动槽1112内转动，所述第三转动块1114在所述第三转动槽1115内转动；所述第三挡块1113用于限制两个所述榫卯插接件11之间的转动角度。
在一实施例中，如图4和图5所示，所述第三开口11151与所述第二开口11121的开口方向呈预设角度设置。可以理解地，所述第三开口11151与所述第二开口11121的开口方向预设角度为0至180度。优选地，所述第三开口11151与所述第二开口11121的开口方向预设角度为90度。
本申请实施例中，通过设置至少两个互相插接的榫卯插接件11，且所述榫卯插接件11为圆型凹凸结合的榫卯结构，从而提高了所述可弯曲管段1的弯曲角度，从而使得所述可弯曲导引鞘管的鞘口可以更方便的朝肾脏内的结 石方向靠近。
在一实施例中，如图6和图7所示，所述榫卯插接件11还包括分别设置在所述第二挡块1110相对两侧的第一卡槽1116和第二卡槽1117；所述第二开口11121的相对两侧分别设有与所述第一卡槽1116适配的第一卡扣1118以及与所述第二卡槽1117适配的第二卡扣1119；在所述可弯曲管段1弯折时，所述第一转动块1109与所述第一转动槽1107相对转动，且所述第二转动块1111与所述第二转动槽1112相对转动；在相邻两个所述榫卯插接件11的所述第二挡块1110与所述第二开口11121的边缘抵接时，相邻两个所述榫卯插接件11停止转动；在所述第一卡扣1118与所述第一卡槽1116卡接或所述第二卡扣1119与所述第二卡槽1117卡接时，相邻两个所述榫卯插接件11之间的相对转动位置被固定。在一实施例中，所述第一卡扣1118和第二卡扣1119为软性材料，所述第一卡槽1116和第二卡槽1117为硬性材料，因此，所述第一卡扣1118和第二卡扣1119与所述第一卡槽1116和第二卡槽1117之间可以相互嵌入并且在一定的作用力下相互分离。可以理解地，所述第一卡扣1118和第二卡扣1119也可为硬性和/或软性材料，所述第一卡槽1116和第二卡槽1117也可为软性和/或硬性材料，只要能实现所述第一卡扣1118与所述第一卡槽1116相互嵌入并且在一定的作用力下相互分离，所述第二卡扣1119与所述第二卡槽1117相互嵌入并且在一定的作用力下相互分离的效果即可。在一实施例中，所述第一卡槽1116和第二卡槽1117也可设置在所述第三挡块1113相对两侧，同时，所述第一卡扣1118和第二卡扣1119也可设置在所述第三开口11151的相对两侧。可以理解地，所述第一卡槽1116和第二卡槽1117及其对应的所述第一卡扣1118和第二卡扣1119，可以分别设置在相邻两个所述榫卯插接件11的抵接面上，只要能实现相邻两个所述榫卯插接件11之间相对转动时在预定的转动位置固定即可。
本申请实施例中，通过在圆型凹凸结合的榫卯插接件11上设置卡槽(比如第一卡槽1116和第二卡槽1117)及卡扣(比如第一卡扣1118和第二卡扣 1119)，随着所述可弯曲管段1弯曲到预设的角度时，通过卡槽卡扣的卡接使所述可弯曲管段1进入固定角度的状态。当撤出可弯曲导引鞘管内的软镜后，所述可弯曲管段1仍然保持在所述固定角度状态，从而方便进行下一步的负压吸引碎石操作。如果需要解除锁定状态，则使用软镜反向弯曲带动所述可弯曲管段1向反方向弯曲，卡槽卡扣解除卡接，所述可弯曲管段1即解除固定角度状态。
如图8所示，本申请一实施例还提供了一种导引装置，包括扩张器4以及上述可弯曲导引鞘管，所述扩张器4穿过所述可弯曲导引鞘管与所述鞘管接头3连接。具体地，所述扩张器4依次穿过所述可弯曲导引鞘管的所述可弯曲管段1、所述中间管段2以及所述鞘管接头3，并与所述鞘管接头3连接。
本实用新型实施例中，导引装置包括可弯曲导引鞘管及穿过所述可弯曲导引鞘管并与所述可弯曲导引鞘管的鞘管接头3连接的扩张器4，所述可弯曲导引鞘管分为可弯曲管段1、中间管段2以及鞘管接头3三个部分，通过将所述可弯曲管段1设置为至少两个沿所述中间管段2轴向顺次插接的榫卯插接件11，从而使导引装置可以弯曲为所需要的形状，从而使得导引装置能够通过可弯曲管段1靠近肾脏内的结石碎块，进而通过手术中灌注的水流将结石碎块从导引装置冲出，如此，提升了对结石碎块的排出效率，避免了结石粉末影响视野或在肾脏内堆积等影响手术效率的状况出现，还可以避免自然排石的不确定性，提升结石清除。
以上仅为本申请的可弯曲导引鞘管及导引装置的实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本申请的保护范围之内。

Claims (20)

  1. 一种可弯曲导引鞘管，其中，包括可弯曲管段、中间管段以及鞘管接头，所述中间管段连接在所述可弯曲管段与所述鞘管接头之间；所述可弯曲管段包括至少两个榫卯插接件，各所述榫卯插接件沿所述中间管段轴向顺次插接；所述可弯曲管段用于在受到侧向力时，通过所述榫卯插接件之间的相对滑动相对于所述中间管段轴向发生弯折。
  2. 根据权利要求1所述的可弯曲导引鞘管，其中，所述可弯曲管段还包括包覆在所述榫卯插接件表面的弹性材料层。
  3. 根据权利要求1所述的可弯曲导引鞘管，其中，所述榫卯插接件包括第一本体、至少两个第一插接部以及至少两个第二插接部，所述第一插接部以及所述二插接部对称连接在所述第一本体的相对两侧；两个所述第一插接部之间形成用于供相邻的所述榫卯插接件的第二插接部插入并相对滑动的第一插接滑槽；两个所述第二插接部之间形成用于供相邻的所述榫卯插接件的第一插接部插入并相对滑动的第二插接滑槽。
  4. 根据权利要求3所述的可弯曲导引鞘管，其中，所述第一插接部包括第一插头以及连接在所述第一本体与所述第一插头之间的第一连接段；所述第二插接部包括第二插头以及连接在所述第一本体与所述第二插头之间的第二连接段；所述第一插接滑槽上设有供所述第二连接段穿过的第一限位口；所述第二插接滑槽设有供所述第一连接段穿过的第二限位口；在与并未弯折的所述可弯曲管段的轴向垂直的方向上，所述第一插头的最大宽度大于所述第二限位口的宽度；在所述可弯曲管段弯折时，所述第一插头沿所述第二插接滑槽相对滑动；所述第二插头的最大宽度大于所述第一限位口的宽度；在所 述可弯曲管段弯折时，所述第二插头沿所述第一插接滑槽相对滑动。
  5. 根据权利要求1所述的可弯曲导引鞘管，其中，所述榫卯插接件包括第二本体、设置在所述第二本体第一侧的第一转动槽、连接在所述第二本体第二侧的第一挡块，以及连接在所述第一挡块的第二侧的第一转动块；所述第一转动槽上设有用于供相邻的所述榫卯插接件的第一挡块穿过的第一开口，所述第一转动槽用于容纳相邻的所述榫卯插接件的第一转动块；所述第一转动块的最大宽度大于所述第一开口的宽度；
    在所述可弯曲管段弯折时，所述第一转动块与所述第一转动槽相对转动，在相邻两个所述榫卯插接件的所述第一转动块被所述第一开口的边缘抵接时，相邻两个所述榫卯插接件停止转动。
  6. 根据权利要求5所述的可弯曲导引鞘管，其中，所述榫卯插接件还包括连接在所述第一转动槽内侧壁上的第二挡块、连接在所述第二挡块第一侧且位于所述第一转动槽中的第二转动块；所述第一转动块上设有第二转动槽，所述第二转动槽上设有背离所述第一开口设置且用于供相邻的所述榫卯插接件的第二挡块穿过的第二开口；所述第二转动槽用于容纳相邻的所述榫卯插接件的第二转动块；所述第二转动块的最大宽度大于所述第二开口的宽度；
    在所述可弯曲管段弯折时，所述第一转动块与所述第一转动槽相对转动，且所述第二转动块与所述第二转动槽相对转动，在相邻两个所述榫卯插接件的所述第一转动块与所述第一开口的边缘抵接或所述第二转动块与所述第二开口的边缘抵接时，相邻两个所述榫卯插接件停止转动。
  7. 根据权利要求6所述的可弯曲导引鞘管，其中，所述榫卯插接件还包括分别设置在所述第二挡块相对两侧的第一卡槽和第二卡槽；所述第二开口的相对两侧分别设有与所述第一卡槽适配的第一卡扣以及与所述第二卡槽适配 的第二卡扣；
    在所述可弯曲管段弯折时，所述第一转动块与所述第一转动槽相对转动，且所述第二转动块与所述第二转动槽相对转动；
    在相邻两个所述榫卯插接件的所述第二挡块与所述第二开口的边缘抵接时，相邻两个所述榫卯插接件停止转动；在所述第一卡扣与所述第一卡槽卡接或所述第二卡扣与所述第二卡槽卡接时，相邻两个所述榫卯插接件之间的相对转动位置被固定。
  8. 根据权利要求6所述的可弯曲导引鞘管，其中，所述榫卯插接件还包括连接在所述第二转动槽内侧壁上的第三挡块、连接在所述第三挡块上且位于所述第二转动槽中的第三转动块；所述第二转动块上设有第三转动槽，所述第三转动槽上设有用于供相邻的所述榫卯插接件的第三挡块穿过的第三开口；所述第三转动槽用于容纳相邻的所述榫卯插接件的第三转动块；所述第三转动块的最大宽度大于所述第三开口的宽度；
    在所述可弯曲管段弯折时，所述第一转动块与所述第一转动槽相对转动，所述第二转动块与所述第二转动槽相对转动，且所述第三转动块与所述第三转动槽相对转动，在相邻两个所述榫卯插接件的所述第一转动块与所述第一开口的边缘抵接、所述第二转动块与所述第二开口的边缘抵接或所述第三转动块与所述第三开口的边缘抵接时，相邻两个所述榫卯插接件停止转动。
  9. 根据权利要求8所述的可弯曲导引鞘管，其中，所述榫卯插接件还包括分别设置在所述第二挡块相对两侧的第一卡槽和第二卡槽；所述第二开口的相对两侧分别设有与所述第一卡槽适配的第一卡扣以及与所述第二卡槽适配的第二卡扣；
    在所述可弯曲管段弯折时，所述第一转动块与所述第一转动槽相对转动，且所述第二转动块与所述第二转动槽相对转动；
    在相邻两个所述榫卯插接件的所述第二挡块与所述第二开口的边缘抵接时，相邻两个所述榫卯插接件停止转动；在所述第一卡扣与所述第一卡槽卡接或所述第二卡扣与所述第二卡槽卡接时，相邻两个所述榫卯插接件之间的相对转动位置被固定。
  10. 根据权利要求8所述的可弯曲导引鞘管，其中，所述第三开口与所述第二开口的开口方向呈预设角度设置。
  11. 根据权利要求10所述的可弯曲导引鞘管，其中，所述榫卯插接件还包括分别设置在所述第二挡块相对两侧的第一卡槽和第二卡槽；所述第二开口的相对两侧分别设有与所述第一卡槽适配的第一卡扣以及与所述第二卡槽适配的第二卡扣；
    在所述可弯曲管段弯折时，所述第一转动块与所述第一转动槽相对转动，且所述第二转动块与所述第二转动槽相对转动；
    在相邻两个所述榫卯插接件的所述第二挡块与所述第二开口的边缘抵接时，相邻两个所述榫卯插接件停止转动；在所述第一卡扣与所述第一卡槽卡接或所述第二卡扣与所述第二卡槽卡接时，相邻两个所述榫卯插接件之间的相对转动位置被固定。
  12. 一种导引装置，其中，包括扩张器以及如权利要求1所述的可弯曲导引鞘管，所述扩张器穿过所述可弯曲导引鞘管与所述鞘管接头连接。
  13. 根据权利要求12所述的导引装置，其中，所述可弯曲管段还包括包覆在所述榫卯插接件表面的弹性材料层。
  14. 根据权利要求12所述的导引装置，其中，所述榫卯插接件包括第一本体、至少两个第一插接部以及至少两个第二插接部，所述第一插接部以及所 述二插接部对称连接在所述第一本体的相对两侧；两个所述第一插接部之间形成用于供相邻的所述榫卯插接件的第二插接部插入并相对滑动的第一插接滑槽；两个所述第二插接部之间形成用于供相邻的所述榫卯插接件的第一插接部插入并相对滑动的第二插接滑槽。
  15. 根据权利要求14所述的导引装置，其中，所述第一插接部包括第一插头以及连接在所述第一本体与所述第一插头之间的第一连接段；所述第二插接部包括第二插头以及连接在所述第一本体与所述第二插头之间的第二连接段；所述第一插接滑槽上设有供所述第二连接段穿过的第一限位口；所述第二插接滑槽设有供所述第一连接段穿过的第二限位口；在与并未弯折的所述可弯曲管段的轴向垂直的方向上，所述第一插头的最大宽度大于所述第二限位口的宽度；在所述可弯曲管段弯折时，所述第一插头沿所述第二插接滑槽相对滑动；所述第二插头的最大宽度大于所述第一限位口的宽度；在所述可弯曲管段弯折时，所述第二插头沿所述第一插接滑槽相对滑动。
  16. 根据权利要求12所述的导引装置，其中，所述榫卯插接件包括第二本体、设置在所述第二本体第一侧的第一转动槽、连接在所述第二本体第二侧的第一挡块，以及连接在所述第一挡块的第二侧的第一转动块；所述第一转动槽上设有用于供相邻的所述榫卯插接件的第一挡块穿过的第一开口，所述第一转动槽用于容纳相邻的所述榫卯插接件的第一转动块；所述第一转动块的最大宽度大于所述第一开口的宽度；
    在所述可弯曲管段弯折时，所述第一转动块与所述第一转动槽相对转动，在相邻两个所述榫卯插接件的所述第一转动块被所述第一开口的边缘抵接时，相邻两个所述榫卯插接件停止转动。
  17. 根据权利要求16所述的导引装置，其中，所述榫卯插接件还包括连接 在所述第一转动槽内侧壁上的第二挡块、连接在所述第二挡块第一侧且位于所述第一转动槽中的第二转动块；所述第一转动块上设有第二转动槽，所述第二转动槽上设有背离所述第一开口设置且用于供相邻的所述榫卯插接件的第二挡块穿过的第二开口；所述第二转动槽用于容纳相邻的所述榫卯插接件的第二转动块；所述第二转动块的最大宽度大于所述第二开口的宽度；
    在所述可弯曲管段弯折时，所述第一转动块与所述第一转动槽相对转动，且所述第二转动块与所述第二转动槽相对转动，在相邻两个所述榫卯插接件的所述第一转动块与所述第一开口的边缘抵接或所述第二转动块与所述第二开口的边缘抵接时，相邻两个所述榫卯插接件停止转动。
  18. 根据权利要求17所述的导引装置，其中，所述榫卯插接件还包括连接在所述第二转动槽内侧壁上的第三挡块、连接在所述第三挡块上且位于所述第二转动槽中的第三转动块；所述第二转动块上设有第三转动槽，所述第三转动槽上设有用于供相邻的所述榫卯插接件的第三挡块穿过的第三开口；所述第三转动槽用于容纳相邻的所述榫卯插接件的第三转动块；所述第三转动块的最大宽度大于所述第三开口的宽度；
    在所述可弯曲管段弯折时，所述第一转动块与所述第一转动槽相对转动，所述第二转动块与所述第二转动槽相对转动，且所述第三转动块与所述第三转动槽相对转动，在相邻两个所述榫卯插接件的所述第一转动块与所述第一开口的边缘抵接、所述第二转动块与所述第二开口的边缘抵接或所述第三转动块与所述第三开口的边缘抵接时，相邻两个所述榫卯插接件停止转动。
  19. 根据权利要求18所述的导引装置，其中，所述第三开口与所述第二开口的开口方向呈预设角度设置。
  20. 根据权利要求17所述的导引装置，其中，所述榫卯插接件还包括分别 设置在所述第二挡块相对两侧的第一卡槽和第二卡槽；所述第二开口的相对两侧分别设有与所述第一卡槽适配的第一卡扣以及与所述第二卡槽适配的第二卡扣；
    在所述可弯曲管段弯折时，所述第一转动块与所述第一转动槽相对转动，且所述第二转动块与所述第二转动槽相对转动；
    在相邻两个所述榫卯插接件的所述第二挡块与所述第二开口的边缘抵接时，相邻两个所述榫卯插接件停止转动；在所述第一卡扣与所述第一卡槽卡接或所述第二卡扣与所述第二卡槽卡接时，相邻两个所述榫卯插接件之间的相对转动位置被固定。
PCT/CN2023/071899 2022-07-05 2023-01-12 可弯曲导引鞘管及导引装置 WO2024007568A1 (zh)

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Publication number Priority date Publication date Assignee Title
CN115054805A (zh) * 2022-07-05 2022-09-16 深圳市库珀科技发展有限公司 可弯曲导引鞘管及导引装置

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5807241A (en) * 1995-09-22 1998-09-15 Richard Wolf Gmbh Bendable tube and method for its manufacture
US20120053415A1 (en) * 2009-05-14 2012-03-01 Cook Medical Technologies Llc Access sheath with active deflection
US20180021546A1 (en) * 2016-07-21 2018-01-25 Creganna Unlimited Company High load steerable shaft and method for cardiac catheter
CN110018562A (zh) * 2019-04-03 2019-07-16 岱川医疗(深圳)有限责任公司 内窥镜的弯曲部及内窥镜
CN110721392A (zh) * 2019-09-29 2020-01-24 深圳泰睿仕医疗科技有限公司 一种一次性使用输尿管导引鞘
CN112472004A (zh) * 2020-12-16 2021-03-12 杭州思康新医疗科技有限公司 一种内窥镜以及用于内窥镜的插入部
CN115054805A (zh) * 2022-07-05 2022-09-16 深圳市库珀科技发展有限公司 可弯曲导引鞘管及导引装置
CN115517974A (zh) * 2022-09-30 2022-12-27 宁波市第一医院 主动可弯鞘管和鞘体可弯型鼻胃肠管
CN218501114U (zh) * 2022-07-05 2023-02-21 深圳库珀医疗股份有限公司 可弯曲导引鞘管及导引装置
CN218853297U (zh) * 2022-07-05 2023-04-14 深圳库珀医疗股份有限公司 一体式可弯曲导引鞘管

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5807241A (en) * 1995-09-22 1998-09-15 Richard Wolf Gmbh Bendable tube and method for its manufacture
US20120053415A1 (en) * 2009-05-14 2012-03-01 Cook Medical Technologies Llc Access sheath with active deflection
US20180021546A1 (en) * 2016-07-21 2018-01-25 Creganna Unlimited Company High load steerable shaft and method for cardiac catheter
CN110018562A (zh) * 2019-04-03 2019-07-16 岱川医疗(深圳)有限责任公司 内窥镜的弯曲部及内窥镜
CN110721392A (zh) * 2019-09-29 2020-01-24 深圳泰睿仕医疗科技有限公司 一种一次性使用输尿管导引鞘
CN112472004A (zh) * 2020-12-16 2021-03-12 杭州思康新医疗科技有限公司 一种内窥镜以及用于内窥镜的插入部
CN115054805A (zh) * 2022-07-05 2022-09-16 深圳市库珀科技发展有限公司 可弯曲导引鞘管及导引装置
CN218501114U (zh) * 2022-07-05 2023-02-21 深圳库珀医疗股份有限公司 可弯曲导引鞘管及导引装置
CN218853297U (zh) * 2022-07-05 2023-04-14 深圳库珀医疗股份有限公司 一体式可弯曲导引鞘管
CN115517974A (zh) * 2022-09-30 2022-12-27 宁波市第一医院 主动可弯鞘管和鞘体可弯型鼻胃肠管

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