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CN-122006084-A - Ureter guiding sheath assembly convenient to smoothly insert into ureter

CN122006084ACN 122006084 ACN122006084 ACN 122006084ACN-122006084-A

Abstract

The invention discloses a ureter guiding sheath component convenient for smooth insertion into a ureter, which belongs to the technical field of ureter guiding sheaths and comprises a flexible inner core, a flexible outer sheath positioned at the outer side of the flexible inner core, a channel positioned between the flexible inner core and the flexible outer sheath and used for penetrating a guide wire inserted into the ureter in advance, a detection mechanism and a control mechanism, wherein an opening-outward groove is formed in one end part of the flexible inner core, an elastic film is arranged at the opening part of the groove, the detection mechanism is positioned in a closed space between the groove and the elastic film, the detection mechanism comprises an angle detector, an adjusting rod, an adjusting part, a connecting ball and a ball seat part, the control mechanism comprises at least four air bags and an air pump which is correspondingly communicated with the air bags one by one through pipelines, and the end part of the guiding sheath component is actively adjusted to adapt to the bending degree of the ureter, so that the friction force between the bending part of the ureter and the ureter is reduced, the ureter is smooth in the ureter insertion process, and the damage to the ureter is reduced.

Inventors

  • GE LILIN
  • CHEN JING
  • LI BIN

Assignees

  • 苏州画度医疗器械有限公司

Dates

Publication Date
20260512
Application Date
20260327

Claims (10)

  1. 1. The ureter guiding sheath assembly convenient for smooth insertion into a ureter comprises a flexible inner core (1), a flexible outer sheath (2) positioned outside the flexible inner core (1), a channel positioned between the flexible inner core (1) and the flexible outer sheath (2) and used for penetrating a guide wire (3) inserted into the ureter in advance, a detection mechanism (4) and a control mechanism, and is characterized in that: A groove (11) with an outward opening is formed in one end part of the flexible inner core (1), an elastic film (12) is arranged at the opening part of the groove (11), and the detection mechanism is positioned in a closed space between the groove (11) and the elastic film (12); The detection mechanism (4) comprises an angle detector (41), an adjusting rod (42), an adjusting part (43), a connecting ball (44) and a ball seat part, wherein the adjusting part (43) and the adjusting rod (42) are fixedly connected to two sides of the connecting ball (44), the adjusting rod (42), the connecting ball (44) and the adjusting part (43) are distributed along a straight line, the adjusting part (43) faces one side of the groove (11), the angle detector (41) is fixed at one end of the adjusting rod (42) facing the elastic film (12), the ball seat part is arranged in the groove (11), and the ball seat part is movably sleeved outside the connecting ball (44) and is positioned on a plane perpendicular to the central axis of the flexible sheath (2); The control mechanism comprises at least four air bags (5) and air pumps (6) which are communicated with the air bags (5) in a one-to-one correspondence manner through pipelines, the at least four air bags (5) are arranged in the groove (11) and are uniformly distributed on the outer side of the adjusting part (43) to be abutted against the adjusting part (43), and the air pumps (6) are arranged at one end, deviating from the groove (11), of the flexible inner core (1); a guide wire groove (13) is formed in the flexible inner core (1) along the extending direction of the flexible inner core (1), and the guide wire (3) is limited in the guide wire groove (13); The control mechanism further comprises a controller (9), the controller (9) is arranged at one end of the flexible inner core (1) deviating from the groove (11), the angle detector (41) and the air pump (6) are electrically connected with the controller (9), the angle detector (41) obtains an angle signal of the guide wire (3) relative to the central axis offset angle of the flexible outer sheath (2) in real time, the angle signal is transmitted to the controller (9), the controller (9) inflates or deflates the corresponding air bag (5) by controlling the air pump (6), the acting force direction acting on the adjusting part (43) is changed, and then the adjusting rod (42) is driven to deflect, so that the guiding sheath component can adjust the advancing direction according to the trend of the ureter so as to facilitate the ureter insertion process.
  2. 2. The ureter guiding sheath assembly convenient to smoothly insert into a ureter according to claim 1, wherein the ball seat part comprises two ball seats which are symmetrically arranged on the wall of the groove (11) and distributed on a plane perpendicular to the central axis of the flexible outer sheath (2) and the connecting balls (44) are movably sleeved outside the connecting balls (44) to clamp the connecting balls (44).
  3. 3. The ureter guiding sheath assembly convenient for smooth insertion into a ureter according to claim 2, characterized in that the ball seat comprises a seat body (45) and a fixing rod (46), one end of the fixing rod (46) is connected with the seat body (45), the other end of the fixing rod is fixed on the wall of the groove (11), and the seat body (45) is sleeved outside the connecting ball (44) and is movably connected with the connecting ball (44).
  4. 4. The ureteral guide sheath assembly convenient for smooth insertion into a ureter according to claim 3, characterized in that the number of the air bags (5) is six, and the six air bags (5) are arranged in the groove (11) and uniformly distributed outside the adjusting part (43) and are abutted against the adjusting part (43).
  5. 5. The ureteral guide sheath assembly facilitating smooth insertion into a ureter according to claim 1, characterized in that an air tube (7) is provided in the flexible inner core (1) as the tube for communicating the air bag (5) with a corresponding air pump (6).
  6. 6. The ureter guiding sheath assembly convenient to smoothly insert into a ureter according to claim 1, wherein an electric connection inner wire (8) is arranged in the flexible inner core (1), one end of the electric connection inner wire extends into the groove (11) and is electrically connected with the angle detector (41), and the other end of the electric connection inner wire (8) is electrically connected with the controller (9).
  7. 7. The ureter guiding sheath assembly convenient to smoothly insert into a ureter according to claim 1, wherein a limiting plate (14) is arranged on the periphery of one end, close to the air pump (6), of the flexible inner core (1).
  8. 8. The ureteral guide sheath assembly for facilitating smooth insertion into a ureter according to claim 1, characterized in that the guide wire (3) is made of metal.
  9. 9. The ureter guiding sheath assembly convenient for smooth insertion into a ureter according to claim 1, characterized in that one end of the adjusting part (43) which is away from the adjusting rod (42) is in a truncated cone shape.
  10. 10. A ureteral introducer sheath assembly facilitating smooth insertion into a ureter according to claim 1, characterized in that the angle detector (41) abuts against the elastic membrane (12).

Description

Ureter guiding sheath assembly convenient to smoothly insert into ureter Technical Field The invention relates to the technical field of ureter guiding sheaths, in particular to a ureter guiding sheath component convenient for being smoothly inserted into a ureter. Background When performing a ureteral operation requiring the use of a soft scope, a ureteral guide sheath is inserted into the ureter along the ureter in advance, then the soft scope is inserted, and in general, the ureteral guide sheath includes an outer sheath and an inner core, which may also be referred to as a obturator, the inner core is inserted into the outer sheath, a guide wire is inserted into the ureter in advance in a specific insertion process, the guide wire may exhibit a bending tendency consistent with the ureter, then the ureteral guide sheath combining the outer sheath and the inner core is inserted into the ureter along the guide wire, and when the soft scope is required to be inserted, the inner core is taken out of the outer sheath, and then the soft scope is inserted into the outer sheath. In the actual operation requiring the use of a soft endoscope, although the ureter guiding sheath is flexible, due to the bending phenomenon of the ureter with different bending degrees, the guiding sheath is acted by the bending part of the ureter to bend to realize the insertion during the insertion, however, the guiding sheath can press the wall of the ureter more than the linear insertion during the action, so that the friction force at the bending part is increased, the ureter of a patient is easily damaged, and the risk of ureter infection is increased later, so that the design of a ureter guiding sheath assembly convenient for smoothly inserting into the ureter is needed to solve the problems. Disclosure of Invention The invention aims to solve the technical problems that the end part of the guiding sheath component is actively adjusted to adapt to the bending degree of the ureter, so that the friction force between the bending part of the ureter and the ureter is reduced, the ureter insertion process is smooth, and the damage to the ureter is reduced. The technical scheme adopted for solving the technical problems is that the ureter guiding sheath component convenient for smooth insertion into a ureter comprises a flexible inner core, a flexible outer sheath positioned outside the flexible inner core, a channel positioned between the flexible inner core and the flexible outer sheath and used for passing through a guide wire inserted into the ureter in advance, a detection mechanism and a control mechanism; the end part of one end of the flexible inner core is provided with a groove with an outward opening, an elastic film is arranged at the opening of the groove, and the detection mechanism is positioned in a closed space between the groove and the elastic film; The detection mechanism comprises an angle detector, an adjusting rod, an adjusting part, a connecting ball and a ball seat part, wherein the adjusting part and the adjusting rod are fixedly connected to two sides of the connecting ball, the adjusting rod, the connecting ball and the adjusting part are distributed along a straight line, the adjusting part faces one side of the groove, the angle detector is fixed at one end of the adjusting rod, which faces the elastic film, the ball seat part is arranged in the groove, and the ball seat part is movably sleeved outside the connecting ball and is positioned on a plane perpendicular to the central axis of the flexible outer sheath; the control mechanism comprises at least four air bags and an air pump which is communicated with the air bags in a one-to-one correspondence manner through pipelines, the at least four air bags are arranged in the groove and are uniformly distributed on the outer side of the adjusting part to be abutted against the adjusting part, and the air pump is arranged at one end of the flexible inner core, which is far away from the groove; The flexible inner core is provided with a guide wire groove which is formed along the extending direction of the flexible inner core, and the guide wire is limited in the guide wire groove; The control mechanism further comprises a controller, the controller is arranged at one end of the flexible inner core, which is away from the groove, the angle detector and the air pump are electrically connected with the controller, the angle detector obtains an angle signal of the guide wire, which is offset by an angle relative to the central axis of the flexible outer sheath, in real time, and transmits the angle signal to the controller, and the controller inflates or deflates the corresponding air bag by controlling the air pump, so that the acting force direction acting on the adjusting part is changed, and then the adjusting rod is driven to deflect, so that the guiding sheath component can adjust the advancing direction according to the trend of the ureter, and the ureter