Percutaneous nephroscope sheath facilitating calculus removal

Abstract

The percutaneous nephroscope sheath comprises a sheath tube used for being guided into the kidney of a patient, the front end of the sheath tube is movably connected with a negative pressure connector, and a pressure distribution hole is formed in the tail end of the sheath tube. The tail end diameter of the sheath tube is larger than the front end diameter of the sheath tube. According to the percutaneous nephroscope sheath convenient for stone removal, the tail end of the sheath tube is thicker than the front end of the sheath tube, broken stones are not easy to be clamped and embedded in the sheath tube in the removal process, the broken stones can be conveniently flushed out from the sheath tube, the operation efficiency is improved, the operation risk is reduced, and the operation is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of percutaneous nephrolithotomy sheaths, in particular to a percutaneous nephrolithotomy sheath which is convenient for removing stones. Background Art

[0002] Percutaneous nephrolithotomy is a surgery that creates a channel from the skin to the kidney at the patient's waist, through which a nephroscope is inserted into the kidney. The kidney stones are broken up and removed using laser, ultrasound and other lithotripsy tools. It has now become one of the conventional treatments for upper urinary tract stones.

[0003] Existing percutaneous nephrolithotomy sheaths are all of uniform thickness. It has been found in clinical use that during lithotripsy, the stones are easily stuck in the center of the tube, and the stone flushing speed is slow, which affects the efficiency of the operation. For this reason, the utility model proposes a percutaneous nephrolithotomy sheath that is convenient for stone removal, facilitates the flushing of stones from the sheath, and improves the efficiency of the operation. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides a percutaneous nephrolithotomy sheath which is convenient for stone removal and has a simple structure and is easy to promote.

[0005] A percutaneous nephrolithotomy sheath for facilitating stone removal comprises a sheath tube for introduction into a patient's kidney, the front end of the sheath tube being movably connected with a negative pressure connector, the end of the sheath tube being provided with a pressure distribution hole; the tail end diameter of the sheath tube is larger than the front end diameter thereof.

[0006] Preferably, a flushing pipe is provided at the bottom of the negative pressure connector, a water inlet valve is provided on the flushing pipe, and a negative pressure suction pipe is provided at the top of the negative pressure connector.

[0007] The beneficial effects of the utility model are:

[0008] The utility model is a percutaneous nephrolithotomy sheath which is convenient for stone removal. The tail end of the sheath is thicker than the front end. During the removal process, the broken stones are not easily stuck in the sheath, and the broken stones are conveniently flushed out of the sheath, thereby improving the operation efficiency, reducing the operation risk and making the operation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0010] Figure 1 A schematic diagram of a first embodiment of a percutaneous nephrolithotomy sheath for facilitating stone removal;

[0011] Figure 2 A schematic diagram of a second embodiment of a percutaneous nephrolithotomy sheath for facilitating stone removal;

[0012] 1- sheath, 2- negative pressure connector, 3- pressure distribution hole, 4- water inlet valve, 5- negative pressure suction pipeline. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0014] As shown in the attached drawings, a percutaneous nephrolithotomy sheath for facilitating stone removal comprises a sheath tube 1 for being introduced into the patient's kidney, the front end of the sheath tube 1 being movably connected with a negative pressure connector 2, and the end of the sheath tube 1 being provided with a pressure distribution hole 3; the diameter of the rear end of the sheath tube 1 is larger than the diameter of the front end thereof, so as to facilitate the flushing of stones out of the sheath tube.

[0015] A flushing pipe is provided at the bottom of the negative pressure connector 2, a water inlet valve 4 is provided on the flushing pipe, and a negative pressure suction pipe 5 is provided at the top of the negative pressure connector 2;

[0016] When in use, a channel from the skin to the kidney is established at the patient's waist, the sheath of the percutaneous nephroscope is inserted into the kidney, and the kidney stones are broken up using lithotripsy tools such as laser and ultrasound; since the tail end of the sheath of this device is slightly thicker, the broken stones are not easily stuck in the sheath during the removal process, making it easier for the broken stones to flush out of the sheath, thereby improving surgical efficiency, reducing surgical risks, and making the operation more convenient.

[0017] The above description is only a preferred embodiment of the present utility model patent and is not intended to limit the present utility model patent. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model patent shall be included in the protection scope of the present utility model patent.

Claims

1. A percutaneous nephrolithotomy sheath for facilitating stone removal, characterized in that: The invention comprises a sheath tube (1) for introduction into a patient's kidney, wherein the front end of the sheath tube (1) is movably connected to a negative pressure connector (2), and the end of the sheath tube (1) is provided with a pressure distribution hole (3); the diameter of the rear end of the sheath tube (1) is larger than the diameter of the front end thereof.

2. A percutaneous nephrolithotomy sheath for facilitating stone removal according to claim 1, characterized in that: A flushing pipe is provided at the bottom of the negative pressure connector (2), a water inlet valve (4) is provided on the flushing pipe, and a negative pressure suction pipe (5) is provided at the top of the negative pressure connector (2).

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