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CN-122004732-A - Percutaneous kidney lithotripsy operation endoscope and application method thereof

CN122004732ACN 122004732 ACN122004732 ACN 122004732ACN-122004732-A

Abstract

The invention discloses a percutaneous kidney lithotripsy operation endoscope and a use method thereof, comprising an electronic endoscope, an endoscope sheath assembly, a guide wire and a puncture needle, wherein instrument channels for the guide wire to pass through are arranged in the electronic endoscope and the puncture needle, a two-way valve assembly which is matched with the guide wire to realize two-way sealing is arranged on the electronic endoscope, the two-way valve assembly comprises a two-way valve plate, two sides of the two-way valve plate are locally sunken towards the middle to form an upper compression surface and a lower compression surface, and a sealing gap for the guide wire to pass through is formed between the two compression surfaces. The invention realizes reliable bidirectional sealing in the whole process of threading, staying and operation of the guide wire, can effectively prevent the leakage of the inflation cavity liquid and the entry of external air, stably maintains the working pressure in the kidney, ensures clear operation vision, reduces complications such as postoperative infection, renal Zhou Yeti extravasation and the like, does not obstruct smooth operation of the guide wire, improves the safety and controllability of the operation, and has reasonable structure and strong practicability.

Inventors

  • RUI HAIPING
  • YU GUOLIANG
  • WANG YANLIANG

Assignees

  • 杭州好克光电仪器有限公司

Dates

Publication Date
20260512
Application Date
20260331

Claims (10)

  1. 1. An endoscope for percutaneous kidney lithotripsy operation is characterized by comprising an electronic endoscope, an endoscope sheath assembly, a guide wire and a puncture needle; The electronic endoscope and the puncture needle are internally provided with instrument channels for the guide wires to pass through, and the electronic endoscope is provided with a two-way valve assembly which is in two-way sealing with the guide wires; the bidirectional valve assembly comprises a bidirectional valve plate, an upper pressing surface and a lower pressing surface which are sunken towards the middle are arranged on two sides of the bidirectional valve plate, and a sealing gap used for passing through a guide wire is formed between the upper pressing surface and the lower pressing surface.
  2. 2. The percutaneous nephrolithotripsy operation endoscope according to claim 1, wherein the electronic endoscope comprises an insertion portion, a scope connected to one end of the insertion portion, and a handle connected to the scope, the instrument channel is provided so as to penetrate in a longitudinal direction of the electronic endoscope, and the two-way valve assembly is provided at one end of the scope away from the insertion portion.
  3. 3. The percutaneous nephrolithotripsy surgical endoscope of claim 2, wherein the bi-directional valve assembly further comprises a rubber cap, a connector and a locking cap, wherein one end of the locking cap is connected with the connector, the other end of the locking cap is in threaded connection with the endoscope body, and a guide wire perforation coaxial with the instrument channel is arranged on the connector.
  4. 4. The percutaneous nephrolithotripsy operation endoscope of claim 3, wherein a connecting cavity is arranged at one end of the endoscope body, which is far away from the instrument channel of the insertion part, the rubber cap is sleeved in the joint, a concave ring is arranged at one side of the rubber cap, a convex ring which is connected with the concave ring in an adaptive manner is arranged at one end of the bidirectional valve plate, and a convex part which is in interference fit with the inner wall of the connecting cavity is arranged at the other end of the bidirectional valve plate.
  5. 5. The percutaneous nephrolithotripsy operation endoscope according to claim 4, wherein a sealing hole for sealing and matching with a guide wire is arranged in the middle of the rubber cap.
  6. 6. The percutaneous nephrolithotripsy operation endoscope of claim 4, wherein the insertion part comprises an inner tube, an outer tube sleeved outside the inner tube, a head sleeve sleeved on the end part of the inner tube, a ring between the sleeved head sleeve and the inner tube, an image sensor arranged in the ring, a sensing unit arranged in a mounting groove of the ring and a light guide beam arranged on the ring; The bottom of the inlaid ring is provided with a supporting bottom surface which is attached to the end surface of the upper end of the inner tube, the supporting bottom surface is provided with a slot for embedding the image sensor, and the top of the inlaid ring is provided with a compression plane compressed on the upper end of the image sensor; the sensing unit at least comprises a pressure sensing unit and a temperature sensing unit which are respectively used for monitoring the pressure in the kidney cavity and the temperature of the inflation cavity liquid in real time.
  7. 7. The percutaneous nephrolithotripsy operation endoscope according to claim 4, wherein a control board comprising an angle sensor is provided on the handle; The angle sensor adjusts the picture display position of the image sensor in real time by calculating the rotation angle of the insertion part so as to ensure that the operation direction of the operation is consistent with the image display direction.
  8. 8. The percutaneous nephrolithotripsy surgical endoscope according to claim 1, wherein the puncture needle is used for establishing an initial channel through percutaneous puncture, the sheath assembly is used for expanding along the initial channel to form a working channel, the guide wire is used for guiding the electronic endoscope to enter the kidney through the working channel established by the sheath assembly in sequence, and the electronic endoscope performs real-time observation by utilizing a visual function of the electronic endoscope.
  9. 9. The percutaneous nephrolithotripsy surgical endoscope according to claim 1, wherein the sheath assembly comprises a sheath, a obturator on one end of the sheath, a sealing cap on the other end of the sheath, and a negative pressure suction channel and a negative pressure adjusting knob provided on the sheath, wherein a guide wire is provided in the sheath for passing through the guide wire channel.
  10. 10. A method of using the percutaneous nephrolithotripsy endoscope of any one of claims 1 to 8, comprising the steps of: s1, establishing a working channel from outside the body to a target area in the body, and placing a guide wire through the working channel; S2, an endoscope guiding step, namely penetrating the tail end of the guide wire from an instrument channel port at the head end of the electronic endoscope, and penetrating out through the two-way valve assembly to establish a guiding relationship; s3, guiding the electronic endoscope through the working channel along the guide wire, detecting the rotation angle of the insertion part in real time through an angle sensor in the handle in the process, and correspondingly adjusting the image display direction to keep the operation direction consistent with the image direction; S4, injecting fluid through an instrument channel of the electronic endoscope after the guide wire is removed, and monitoring the pressure and the temperature of the fluid in a target area in real time through the sensing unit; s5, a surgical instrument operation step of introducing the surgical instrument through the instrument channel.

Description

Percutaneous kidney lithotripsy operation endoscope and application method thereof Technical Field The invention relates to the technical field of medical instruments, in particular to a percutaneous kidney lithotripsy operation endoscope and a use method thereof. Background Percutaneous nephrolithotomy (PCNL) is a commonly used minimally invasive surgical procedure for treating kidney stones, in which percutaneous access is established, and the stones are observed and removed through an endoscope. In surgical procedures, guide wires are standard procedures for guiding instruments through an endoscopic instrument channel, but sealing problems between the guide wires and the instrument channel have been a clinical difficulty. The prior percutaneous nephroscope and ureteroscope generally adopt a sealing cap or a one-way valve structure to seal the instrument channel. For example, a sealing cap made of silica gel or plastic is sleeved at the tail end of the mirror body, and a small hole is reserved for a guide wire to pass through. However, this structure has the obvious disadvantage that the guide wire needs to be repeatedly pulled to adjust the position during the operation, and a gap is easily generated between the sealing cap and the guide wire, so that the perfusate (inflation lumen fluid) is splashed outwards from the gap to leak. More seriously, when the pressure in the renal pelvis increases (e.g., when high pressure perfusion), the unidirectional valve tends to deform outwardly, with a significant increase in the risk of seal failure. The leakage of liquid not only can cause blurred surgical vision and difficult operation, but also can cause the risk of infection of medical staff and complications such as extravasation of liquid around the kidney, abdominal dropsy and the like of patients. In order to improve the sealing performance, part of the prior art adopts an internal latex valve or an elastic sealing valve structure, and the liquid leakage amount is reduced by utilizing the elasticity of the material. However, such structures are typically fabricated in combination, are relatively costly, and the sealing effect is dependent on the elastic deformability of the material. During the wire drawing process, the sealing member is easily deformed rearward, resulting in seal failure. In addition, the existing sealing structure is mostly of a one-way sealing design, and can only prevent liquid from leaking from the instrument channel to the outside, but air easily enters the cavity from the outside in the process of inserting or extracting the guide wire, so that the kidney expansion effect and the operation visual field are affected. Therefore, there is a need in the clinic for a device that can achieve reliable bidirectional sealing when a guidewire passes through an instrument channel, not only can effectively prevent the drainage of inflation lumen fluid, but also can prevent air from entering, and simultaneously allows the guidewire to pass smoothly without deformation failure, so as to reduce the risk of surgical complications and improve the surgical safety. Disclosure of Invention The invention provides an endoscope for percutaneous kidney lithotripsy operation, which aims at overcoming the defects in the prior art. The technical scheme adopted by the invention is that the percutaneous kidney lithotripsy operation endoscope comprises an electronic endoscope, a sheath component, a guide wire and a puncture needle; The electronic endoscope and the puncture needle are internally provided with instrument channels for the guide wires to pass through, and the electronic endoscope is provided with a two-way valve assembly which is in two-way sealing with the guide wires; the bidirectional valve assembly comprises a bidirectional valve plate, an upper pressing surface and a lower pressing surface which are sunken towards the middle are arranged on two sides of the bidirectional valve plate, and a sealing gap used for passing through a guide wire is formed between the upper pressing surface and the lower pressing surface. Further, the electronic endoscope comprises an insertion part, a scope body connected with one end of the insertion part and a handle connected with the scope body, the instrument channel is communicated with the electronic endoscope along the length direction, and the two-way valve assembly is arranged at one end of the scope body away from the insertion part. Further, the bi-directional valve assembly further comprises a rubber cap, a connector and a locking cap, one end of the locking cap is connected with the connector, the other end of the locking cap is connected with the mirror body in a threaded mode, and a guide wire perforation coaxial with the instrument channel is arranged on the connector. Further, a connecting cavity is formed in one end, far away from the instrument channel of the insertion part, of the lens body, the rubber cap is sleeved in the connector, a concave ring