Percutaneous renal perfusion suction and tear combined sheath

Abstract

The invention belongs to the field of medical equipment, and particularly relates to a percutaneous renal perfusion suction and tear combined sheath. The percutaneous renal perfusion suction and tearcombined sheath comprises a perfusion sheath component and a suction sheath component. The perfusion sheath component includes a perfusion main tube, an outer sheath and a perfusion branch tube. The suction sheath component includes a suction main tube, an inner sheath matched with the suction main tube in an insertion mode and a suction branch tube disposed on the side part of the suction main tube. The rear end of the perfusion main tube is connected with the front end of the suction main tube through a connecting component. The inner sheath is located in the outer sheath, and the inner sheath is internally provided with an inner channel in communication with the suction branch pipe. An outer channel communicating with the perfusion branch tube is formed between the inner sheath and theouter sheath. The percutaneous renal perfusion suction and tear combined sheath is suitable for injection molding production, has lower costs, can be used once, and is more hygienic. The connecting component enables a perfusion sheath and a suction sheath to be quickly disassembled and assembled, and can ensure the airtightness. A locking sealing sleeve can realize the rapid disassembly and assembly of the perfusion main tube and the outer sheath, and can further ensure the airtightness.

Description

technical field [0001] The invention belongs to the field of medical devices, and in particular relates to a percutaneous renal perfusion suction tearing combination sheath. Background technique [0002] Minimally invasive percutaneous nephrolithotomy is commonly known as "hole stone removal", that is, through an incision of about 0.5 cm on the patient's waist, a stone removal channel is established, a nephroscope is inserted, and the kidney is removed by an ultrasonic pneumatic lithotripsy machine or a holmium laser lithotripsy machine. Internal stones, especially cast stones and upper ureteral stones are crushed and then taken out. Percutaneous nephroscopic technique is an important part of urological surgery. Together, shock wave lithotripsy has become the main treatment method in modern times, which has completely changed the surgical treatment mode of traditional open surgery. [0003] Minimally invasive percutaneous nephrolithotomy can be realized by percutaneous neph...

AI Technical Summary

Problems solved by technology

Among them, the suction valve body and the stone-absorbing sheath are made of metal. The stone-clearing sheath and the stone-clearing sheath made of metal are expensive and heavy, and are easy to cause damage to the surrounding tissues of the kidney. They cannot be completely used for repeated use among different patients. Ensure health and safety

[0005] Based on the above problems, the applicant conceived a percutaneous renal perfusion suction tear combination sheath made of plastic to replace the suction stone clearing sheath and suction valve body. The plastic percutaneous renal perfusion suction tear combination sheath can be directly injected It is processed, cheap, can be used once, and can ensure hygiene and safety. Because the processing technology and material properties of plastic are different from those of metal, the structure of the suction sheath and valve body made of metal materials cannot be completely transferred to plastic. The percutaneous renal perfusion suction tear-off combined sheath made of plastic material, so the structure of the plastic percutaneous renal perfusion suction tear-off combination sheath needs to be redesigned

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