CN-122004730-A - Ureter soft lens sheath suite

CN122004730ACN 122004730 ACN122004730 ACN 122004730ACN-122004730-A

Abstract

The application discloses a ureteroscope sheath kit, which is used for a ureteroscope, wherein the ureteroscope sheath kit is used for inserting a hard lens tube into a device channel, and a sheath core connecting piece is fixed with an outer sheath connecting piece; the method comprises the steps of inserting a flexible endoscope body into an endoscope body channel, fixing a sheath core fixing piece with the front end of a handle of the flexible ureteroscope, placing a flexible ureteroscope sheath sleeve and a hard ureteroscope assembled by the flexible ureteroscope into a ureter, disconnecting a sheath core connecting piece and an outer sheath connecting piece, and withdrawing the sheath core and the flexible ureteroscope. The application can realize one-step sheath placement, greatly improve the operation efficiency, has the function of actively expanding ureters, lightens sheath placement resistance, further improves the sheath placement success rate, utilizes the soft and hard combined outer sheath, can not deform when being extruded by a lumen, and can coaxially rotate in the lumen of the sheath, thereby being easier to find the target position.

Inventors

LI JUNSHENG
ZHANG SHUNQING
LIU LINGXIN
WANG XIAOLI
LI JUNLING
ZHANG JING

Assignees

濮阳医学高等专科学校

Dates

Publication Date: 20260512
Application Date: 20260401

Claims (8)

1. The utility model provides a ureter soft lens sheath external member for ureter soft lens, its characterized in that, ureter soft lens sheath external member includes sheath and sheath core, the sheath includes sheath body main part and sheath base, sheath body main part inboard is equipped with the equipment passageway, the sheath core includes hard mirror tube and connecting pipe, the front end of connecting pipe is located to hard mirror tube, and the front portion of connecting pipe is equipped with sheath core connecting piece and the rear portion is equipped with sheath core mounting, the rear end of sheath base be equipped with sheath core connecting piece matched with sheath core connecting piece, the sheath core includes mirror body passageway, ureter soft lens sheath external member is used for: inserting a hard lens tube into the equipment channel, and fixing a sheath core connecting piece with the outer sheath connecting piece; Inserting the endoscope soft endoscope body into the endoscope body channel, and fixing the sheath core fixing piece with the front end of the handle of the ureter soft endoscope; placing a ureter soft lens sheath sleeve and a hard lens assembled by the ureter soft lens into a ureter; and (3) disconnecting the sheath core connecting piece from the outer sheath connecting piece, and withdrawing the sheath core and the ureteroscope.
2. The flexible ureteroscope sheath kit according to claim 1, wherein the side surface of the connecting tube is provided with a water receiving port, the front end side surface of the rigid endoscope tube is provided with a water spraying hole, the water spraying hole is communicated with the water receiving port through an endoscope body channel, a gap exists between the inner wall of the endoscope body channel and the outer side of the flexible endoscope body, the water spraying hole is positioned at the front side of the end surface of the sheath body main body in the state that the rigid endoscope tube is inserted into the equipment channel, and the working process of the flexible ureteroscope sheath kit comprises: Before the hard lens enters the ureter, the water receiving port is connected with normal saline through a booster pump; And controlling the water yield of the water spraying hole in the process of placing the hard lens into the ureter.
3. The ureteral soft lens sheath kit of claim 1, wherein the handle of the ureteral soft lens comprises an optical fiber interface and an endoscope water inlet, the working process of the ureteral soft lens sheath kit comprising: Inserting the endoscope soft lens body into the equipment channel; the water inlet of the endoscope is connected with normal saline through a booster pump, the optical fiber interface is connected with an optical fiber; physiological saline is accessed by utilizing a water inlet of the endoscope; and coaxially rotating the ureteral soft lens in the outer sheath to adjust the angle and carrying out laser lithotripsy by using an optical fiber.
4. The ureteroscope sheath kit according to claim 3, characterized in that the sheath body comprises a sheath water inlet channel, a sheath water inlet interface and a negative pressure interface, the sheath water inlet interface is arranged on the side surface of the rear part of the sheath body, one end of the sheath water inlet channel is communicated with the sheath water inlet interface, the water outlet of the sheath water inlet channel is arranged at the front end of the sheath body, the negative pressure interface is communicated with the equipment channel, and the working process of the ureteroscope sheath kit comprises: after laser lithotripsy, closing the water inlet of the endoscope; the sheath water inlet port is connected with normal saline through a booster pump, and negative pressure water absorption is carried out through a negative pressure port.
5. The ureteroscope sheath kit according to claim 3, characterized in that the sheath body comprises a front section tube body and a rear section tube body, the front section tube body and the rear section tube body are integrally formed, the front section tube body is made of flexible materials, the rear section tube body is made of rigid materials, the length of the front section tube body is a preset value, and the working process of the ureteroscope sheath kit comprises: After the endoscope soft lens body is inserted into the equipment channel, the front section tube body is driven to bend by the endoscope soft lens body, the ureter soft lens is axially rotated to adjust the angle, and then laser lithotripsy is carried out by using optical fibers.
6. The ureteroscope sheath kit according to claim 5, characterized in that the preset value ranges from 2 cm to 15 cm, the sheath body comprises a tube body made of flexible materials, a gap interlayer is arranged in the tube wall of the tube body, a metal wire is spirally wound in the gap interlayer, gaps exist between the metal wires in the front-section tube body region, and the metal wires are fixedly connected in the rear-section tube body region.
7. The ureteral soft lens sheath kit according to claim 1, characterized in that the front end of the lens channel is provided with a transparent lens cover, the edge of which is provided with a wire guide hole.
8. The ureteroscope sheath kit according to claim 1, characterized in that the sheath core fixing piece comprises a fixing tube, the front end of the fixing tube is provided with a sheath core fixing section, the rear end of the fixing tube is provided with a handle fixing section, the fixing tube is made of rigid materials, the sheath core fixing section and the handle fixing section are both fixed through a clamp, the sheath core fixing section and the handle fixing section comprise a plurality of fixing teeth, the clamp is arranged on the outer sides of the fixing teeth, and anti-slip pads are arranged on the inner sides of the fixing teeth.

Description

Ureter soft lens sheath suite Technical Field The invention relates to a ureteral soft lens sheath kit. Background Ureteroscope lithotripsy (FURL) is an important minimally invasive technique for treating upper urinary tract stones in the field of urology in recent years. The technology utilizes the natural cavity of the human body, a ureteroscope is placed in the natural cavity through the urethra and the bladder, a kidney collecting system is accessed under direct vision to search for stones, and the stones are broken by means of energy platforms such as laser and the like. The technical principle of the soft lens mainly depends on the active bending function of the soft lens body, so that an operator can probe renal pelvis and most renal calyx which cannot be reached by the traditional hard lens, and the soft lens is particularly suitable for treating infrarenal pole calculus and partial complex renal calculus. In the lithotripsy process, holmium laser or thulium fiber laser transmits energy through the fiber, and the stones are crushed into extremely fine powder particles (the diameter is usually smaller than 2 mm) in a liquid environment, and the particles can be naturally discharged out of the body along with urine. Compared with the traditional therapy, FURL shows remarkable clinical advantages that firstly, the minimally invasive performance is outstanding, the operation is completely performed through a natural cavity, the waist puncture wound required by percutaneous nephrolithotripsy (PCNL) is avoided, the bleeding risk is low, the postoperative recovery is quick, secondly, the lithotripsy effect is accurate and controllable, and the defects that the in-vitro shock wave lithotripsy (ESWL) has limited hard stone crushing effect and uncontrollable lithotripsy particles are overcome. In the prior art, a step-by-step sheath placement is adopted, namely, a guide wire is placed under a ureteral hard lens, the ureteral hard lens is withdrawn, a ureteral sheath and a sheath core are placed along a guide wire blind method, then the sheath core is pulled out, and then the ureteral soft lens is placed along an outer sheath channel, so that the operation efficiency is low, the sheath placement success rate is low, and complications are easy to occur. Moreover, the ureteroscope lithotripsy has great difficulty in seeking stones and lithotripsy, has great limitation in operation and low operation efficiency. Disclosure of Invention The invention aims to overcome the defects of low operation efficiency, low sheath placement success rate, easy complications, great difficulty in seeking stones and lithotripsy, great limitation in operation and low operation efficiency of ureter soft lens sheath in ureter soft lens lithotripsy in the prior art, provides an integrated design of an endoscope and an endoscope sheath, can realize one-step visual sheath placement, greatly improve operation efficiency, reduce complications, has the function of actively expanding a ureter, lightens sheath placement resistance, further improves sheath placement success rate, ensures that kidneys, ureters, bladder, urethra and the like are in a horizontal line, and enables a soft lens to coaxially rotate in a sheath lumen so as to further improve operation efficiency. The existing sheath is softer, especially when a male is operated, the sheath is also upwards bent due to physiological bending of the male urethra, and when stone is sucked negatively, the stone is easy to flow back again to influence the negative suction effect, meanwhile, the sheath is softer, the lumen is deformed when the outer tissue of the sheath is pressed, so that the ureteroscope cannot coaxially rotate in the lumen of the sheath, and the front end of the ureteroscope is influenced to search for stones and stone in the renal cup. The invention solves the technical problems by the following technical scheme: The utility model provides a ureter soft lens sheath external member for ureter soft lens, its characterized in that, ureter soft lens sheath external member includes sheath and sheath core, the sheath includes sheath body main part and sheath base, sheath body main part inboard is equipped with the equipment passageway, the sheath core includes hard mirror tube and connecting pipe, the front end of connecting pipe is located to hard mirror tube, and the front portion of connecting pipe is equipped with sheath core connecting piece and the rear portion is equipped with sheath core mounting, the rear end of sheath base be equipped with sheath core connecting piece matched with sheath core connecting piece, the sheath core includes mirror body passageway, ureter soft lens sheath external member is used for: inserting a hard lens tube into the equipment channel, and fixing a sheath core connecting piece with the outer sheath connecting piece; Inserting the endoscope soft endoscope body into the endoscope body channel, and fixing the sheath core fixing piece with the