Stone removing sheath for liver and gall stone breaking

Abstract

The utility model belongs to the field of medical instruments, and particularly relates to a lithotripsy sheath for liver and gall lithotripsy. The device comprises a sheath tube made of a flexible tube, a notch is longitudinally formed in the front end of the sheath tube along a tube body, and the tube walls on the two sides of the notch are arc-shaped to form double petals; the rear end of the sheathing canal is connected with a Y-shaped negative pressure assembly, the whole material is transparent hard plastic, an oblique branch is a negative pressure channel connected with a negative pressure suction device, a negative pressure relief hole is formed in the side face of the channel, and the tail end of the channel is a hard endoscope or choledochoscope access channel. By means of the front-end double-valve structure, the incision and a rotary advancing mode, the double valves at the front end of the sheath tube are folded, so that the front end can be reduced in the operation according to the actual application requirement, the sheath tube can advance into a deeper cavity tube, the stone removing sheath does not need to be replaced in the operation, and the operation risk is greatly reduced.

Description

Technical Field

[0001] The utility model belongs to the field of medical devices, and particularly relates to a stone-removing sheath for hepatobiliary lithotripsy. Background Technique

[0002] A calculus is a solid mass formed in the duct cavity or cavity organ (such as the kidney, ureter, gallbladder or bladder, etc.) of the human body or animal body. It is mainly seen in the gallbladder, bile duct, bladder, renal pelvis and ureter, and can also be seen in the cavities of the pancreatic duct, salivary gland duct, etc. Hepatobiliary calculi include intrahepatic bile duct calculi, common bile duct calculi and gallbladder calculi. The diameters of the intrahepatic bile duct, common bile duct and cystic duct vary with the location, generally gradually becoming thicker at the proximal end and thinner at the distal end. When traditional surgery needs to reach a more distal part to treat the calculus, a smaller sheath tube needs to be replaced, increasing the surgical risk. Summary of the Invention

[0003] In order to solve the above problems, the utility model provides an auxiliary stone-removing sheath for lithotripsy of intrahepatic bile duct calculi and common bile duct calculi under a rigid endoscope or a choledochoscope. The specific technical solutions are as follows:

[0004] A stone-removing sheath for hepatobiliary lithotripsy includes a sheath tube made of a soft tube material. A cut is longitudinally arranged along the front end of the sheath tube, and the tube walls on both sides of the cut are arc-shaped, forming a double flap; the cut is set as a cut dotted line, which is torn or cut open during use, and the length of the cut dotted line is 1-5 cm; the rear end of the sheath tube is connected to a Y-shaped negative pressure assembly, and the overall material is a transparent hard plastic material. The oblique branch is a negative pressure channel connected to a negative pressure suction device. A negative pressure relief hole is arranged on the side of the channel, and the end of the channel is an access channel for a rigid endoscope or a choledochoscope, and a perforated sealing ring is arranged at the end channel opening.

[0005] Further, the length of the sheath tube is 25 cm, and the diameter is 12 mm, 14 mm, 16 mm or 18 mm.

[0006] Further, a rubber sealing ring is arranged at the end of the channel.

[0007] When the utility model is in use, it is cut or torn along the cut. By rotating and advancing, the double flaps at the front end of the sheath tube are folded, so that the front end can be made smaller during surgical use according to actual application needs (becoming smaller as the cystic duct gradually becomes smaller), so that the sheath tube can advance into a deeper cavity tube. The negative pressure relief hole on the Y-shaped negative pressure assembly can be covered by the operator's finger during the operation as needed, so as to change the negative pressure inside the whole pipeline.

[0008] Through the above design, the present utility model folds the double flaps in the cystic duct during the operation through the front-end arc-shaped double flaps and the dotted line of the incision on the sheath tube. The length of the tangent line can enable the stone-clearing sheath to adaptively fold and become smaller as the cystic duct becomes smaller during the operation, so that the sheath tube can advance into a deeper cavity tube, effectively avoiding the surgical risks brought by replacing stone-clearing sheaths with different diameters during the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 Schematic structural diagram of the present utility model.

[0010] Reference numerals:

[0011] 1 - sheath tube, 2 - incision, 3 - arc-shaped flap, 4 - Y-shaped negative pressure assembly, 5 - negative pressure relief hole, 6 - sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0012] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0013] As Figure 1 shown: A stone-clearing sheath for hepatobiliary lithotripsy includes a sheath tube 1 made of a soft tube material. The front end of the sheath tube 1 is longitudinally provided with an incision 2 along the tube body. The tube walls on both sides of the incision are arc-shaped, forming double flaps 3. The rear end of the sheath tube is connected to a Y-shaped negative pressure assembly 4, and the overall material is a transparent hard plastic material. The oblique branch is a negative pressure channel connected to a negative pressure suction device. A negative pressure relief hole 5 is provided on the side of the channel, and the end of the channel is a passage for a rigid endoscope or a choledochoscope to enter and exit. A rubber sealing ring 6 is provided at the end of the channel.

[0014] The length of the sheath tube 1 is 25 cm, and the diameter is 12 mm, 14 mm, 16 mm or 18 mm.

[0015] The incision 2 is set as a dotted line incision, which is torn or cut open during use. The length of the dotted line incision is 1 - 5 cm.

[0016] When the present utility model is in use, it is cut or torn along the incision. By rotating and advancing, the double flaps at the front end of the sheath tube are folded, so that the front end can become smaller during the surgical use according to actual application needs (become smaller as the cystic duct gradually becomes smaller), so that the sheath tube can advance into a deeper cavity tube. The negative pressure relief hole on the Y-shaped negative pressure assembly can be covered by the operator's finger during the operation as needed, so as to change the negative pressure inside the entire pipeline.

[0017] The above describes in detail the preferred embodiments of the present patent. However, the present patent is not limited to the above embodiments, and various changes can be made within the scope of knowledge of those of ordinary skill in the art without departing from the gist of the present patent.

Claims

1. A lithotripsy sheath for hepatobiliary lithotripsy, characterized in that: The invention comprises a sheath tube (1) made of a soft tubular material, wherein the front end of the sheath tube (1) is provided with an incision (2) along the longitudinal direction of the tube body, and the tube walls on both sides of the incision are arc-shaped to form double flaps (3); the incision (2) is provided as an incision dotted line, which is torn or cut open when in use, and the incision dotted line is 1-5 cm long; the rear end of the sheath tube is connected to a Y-shaped negative pressure component (4), the whole material of which is a transparent hard plastic material, and the oblique branch is a negative pressure channel connected to a negative pressure suction device, and a negative pressure relief hole (5) is provided on the side of the channel, and the end is a hard endoscope or a choledochoscope inlet and outlet channel, and a sealing ring with a hole (6) is provided at the end of the channel.

2. A lithotripsy sheath for hepatobiliary lithotripsy according to claim 1, characterized in that: The sheath tube (1) is 25 cm in length and has a diameter of 12 mm, 14 mm, 16 mm or 18 mm.

3. The lithotripsy sheath for hepatobiliary lithotripsy according to claim 1, characterized in that: The sealing ring (6) is made of rubber.

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