Negative pressure adjusting device connected with ureter sheath

Abstract

The invention discloses a negative pressure adjusting device connected with a ureter sheath. The negative pressure adjusting device comprises a sealing connector connected with the tail end of the ureter sheath; the interior of the sealing connector is hollow to form a cavity; a connecting opening communicated with the ureter sheath, a negative pressure connecting-in opening connected with a negative pressure suction device, a ureteroscope body connecting-in opening for a ureteroscope to penetrate and an air inlet provided with an air inlet adjusting valve are formed in the sealing connector; the negative pressure in the cavity is adjusted through the air inlet adjusting valve by changing the size of an air flow channel between the cavity and the atmosphere; a sealing cover is arranged at the position of the ureteroscope body connecting-in opening; and an elastic sealing hole in sealing fit with the tubular outer wall of the ureteroscope is formed in the sealing cover. By means of the negative pressure adjusting device, liquid injected into a kidney collecting system through the ureteroscope can be rapidly sucked out; the pressure of the kidney collecting system is effectively controlled; injuries of the high pressure of the kidney collecting system to patients are avoided; meanwhile, calculus powder and disintegrated slag generated in an operation can be rapidly sucked out; the operation view definition is improved; the operation efficiency is higher; the operation time is shorter; and the operation safety performance is greatly improved.

Description

technical field [0001] The invention relates to a medical device, in particular to a negative pressure regulating device connected with a ureteral sheath. Background technique [0002] With the improvement of living standards, people's daily diet structure is also changing, and the number of patients with upper urinary tract stones is increasing year by year, especially those with kidney stones. At present, the mainstream surgical treatment methods include lithotripsy through natural channels (i.e. urethra, bladder, ureter) as the surgical path and percutaneous nephrostomy and other unnatural channels. In recent years, the medical field has gradually advocated the use of natural passages (ie, urethra, bladder, ureter) as the surgical approach for kidney stone surgery. [0003] When performing nephrolithiasis surgery through the natural channel, a ureteric sheath should be placed as the surgical channel through the natural channel, so that the ureteroscope can quickly enter ...

AI Technical Summary

Problems solved by technology

But even so, for kidney stones no larger than 2cm, it is still easy to have high pressure in the renal collecting system with this surgical method, resulting in a high incidence of urinary infection, which affects the development of this surgical method

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