Surgical instrument for percutaneous transhepatic choledochoscope diagnosis and treatment

Abstract

A surgical instrument for percutaneous transhepatic choledochoscope diagnosis and treatment is used for establishing a first-stage surgical channel of the percutaneous transhepatic choledochoscope and sinus tract forming of staging surgery, and the surgical instrument system is composed of a surgical working channel sheathing canal and a sinus tract forming drainage tube. The operation working channel sheathing canal is provided with a straight pipe, a bent pipe, an adjustable bending design and an adjustable bending device so as to adapt to all levels of bile ducts to walk, is provided with an anti-squashed pipe body or a variable-diameter material or a variable-diameter device pipe body, a controllable negative pressure connector, an endoscope insertion channel, a sealing cap and an instrument channel, and is provided with an expansion pipe, so that the sheathing canal can be conveniently and smoothly placed into the biliary tract; the sinus tract forming drainage tube body is of a reducing structure, adapts to the volume of a bile duct cavity, is provided with a pigtail-shaped anti-falling device, a fixing line and other anti-falling devices, reduces falling of the drainage tube, is provided with a side hole, can achieve the bile drainage function, is provided with a fixed Luer taper and a movable Luer taper, facilitates imbedding of the sinus tract forming drainage tube in different operation scenes, and is convenient to use. The device is used for improvement and smooth implementation of percutaneous transhepatic choledochoscope surgery.

Description

Technical Field

[0001] This technical field belongs to the field of medical devices, and belongs to surgical instruments for minimally invasive biliary surgery, which are mainly used for primary or staged percutaneous transhepatic choledochoscopy (PTCS) surgery. Background Art

[0002] In the field of minimally invasive biliary surgery, traditional percutaneous transhepatic choledochoscopy is performed using a peeling sheath or a stainless steel surgical sheath for the first stage, and staged surgery is performed through the sinus tract. The sinus tract is established by replacing thin tube drainage with thick tube drainage based on percutaneous transhepatic biliary drainage (PTCD). After replacing the thick tube drainage with one that is compatible with the outer diameter of the choledochoscope, a sinus tract for percutaneous transhepatic choledochoscopy diagnosis and treatment can be formed after 6 to 8 weeks, and PTCS surgery can be performed using the sinus tract. The peeling sheath has poor supporting force, and cannot exert good channel performance when encountering a large angle bend, and cannot adapt well to the bile duct route; the stainless steel surgical sheath has good supporting performance, but poor conformability to the bile duct route, and cannot exert good channel performance when encountering a large angle bend; in terms of sinus tract forming instruments, currently it is mainly completed by using a series of ordinary drainage tubes, and there is no special instrument suitable for the characteristics of the bile duct and to prevent falling off. This invention designs a sheath for percutaneous transhepatic choledochoscopy and its matching sinus tract forming drainage tube, which solves the problem of the conformity of the instrument to the bile duct, reduces damage, can exert good sinus tract forming and channel drainage performance, has the functions of forming, preventing falling off and drainage, and is used for the improvement and smooth implementation of percutaneous transhepatic choledochoscopy. Summary of the invention

[0003] The invention is designed to achieve the goal of forming a percutaneous transhepatic choledochoscopy sinus tract in 6 to 8 weeks without the need for repeated replacement of instruments through a variable diameter structure of the tube body wall or a self-expanding variable diameter material and device. The invention is used for percutaneous transhepatic choledochoscopy (PTCS) surgery, and can achieve the establishment of a primary PTCS surgical channel and the insertion of a suitable sinus tract forming drainage tube after the surgery, facilitating the staged diagnosis and treatment of PTCS via the sinus tract. BRIEF DESCRIPTION OF THE DRAWINGS

[0004] Figure 1 The present invention is a schematic diagram of the structure of a surgical instrument for percutaneous transhepatic choledochoscopy according to an embodiment of the present invention.

[0005] In the figure: (1) - straight tube, curved tube and adjustable curved structure; (2): high-strength supporting tube wall with additional variable diameter structure; (3) sheath seat with negative pressure connection port; (4) - channel sealing cap that can be inserted into percutaneous transhepatic choledochoscope; (5) - sheath seat with instrument channel and sealing cap; (6) tail end with Luer connector and front end with tip molded expansion tube that can pass guide wire; (7) - variable diameter structure; (8) - pig tail-shaped structure with fixed line to prevent falling off; (9): side hole with drainage function; (10) - fixed integrated or movable detachable Luer connector.

Claims

1. A surgical instrument device for percutaneous transhepatic choledochoscope diagnosis and treatment, consisting of a surgical working channel sheath and a sinus forming drainage tube, characterized in that The front end of the surgical working channel sheath has a straight tube, a curved tube and an adjustable curved design (1) and an adjustable curved device (1) to adapt to the various angles of the bile duct and the common bile duct at various levels; the lumen of the surgical working sheath has an anti-crushing material and structure (2), and has a variable diameter material or a variable diameter device (2); the rear end of the surgical working sheath has a controllable negative pressure connection port (3); the rear end of the surgical working sheath has a percutaneous transhepatic choledochoscope insertion channel (4) and an independent sealing device (4); the rear end of the surgical working sheath has an instrument channel (5) and a sealing cap (5); the surgical working sheath is equipped with a tip molding ( 6) and a guide dilatation tube with a Luer connector (6); the front end of the sinus shaped drainage tube is made of a variable diameter material or has a variable diameter structure (7), and the inner and outer diameters of the front end tube body after the diameter change become smaller (7), which can better adapt to the volume of the bile duct cavity and reduce damage; the front end of the sinus shaped drainage tube has a variable diameter, and the tube body after the diameter change has a pigtail or other anti-falling design (8) and a fixing line (8) to reduce the drainage tube from falling out of the bile duct cavity; the sinus shaped drainage tube has a side hole (9) to achieve the bile drainage function; the sinus shaped drainage tube has a fixed Luer connector (10) and a movable Luer connector design (10).

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