Negative-pressure suction adjustment device for trans-sheath stone extraction with endoscope

Abstract

The invention relates to a negative-pressure suction adjustment device for trans-sheath stone extraction with an endoscope. The negative-pressure suction adjustment device for trans-sheath stone extraction with the endoscope comprises a shell, wherein an endoscope entrance, a sheath canal installation opening and a negative pressure introducing opening are formed in the shell, and a negative pressure adjustment mechanism which is communicated with a cavity of the shell is also arranged on the shell. The negative-pressure suction adjustment device for trans-sheath stone extraction with the endoscope has the advantages that an operator can directly and accurately set and control negative pressure suction force to be at a reasonable value, the situations that renal hemorrhage is aggravated due to the fact that the negative pressure is too high and drainage is not smooth, the renal low-pressure state cannot be maintained and broken calculuses can not be sucked out due to the fact that the negative pressure is too low can be avoided, the negative-pressure drainage condition of a sheath canal can be observed directly, and the situation that a drainage channel in the sheath canal is blocked due to broken calculuses and blood clots can be found and handled in time; a central negative pressure suction source commonly used in an operating room can be directly used, and no special negative pressure control and monitoring device is needed; the negative-pressure suction adjustment device is widely applied to click peeling sheaths with various calibers, nephric duct passing sheaths with various calibers and various hard and soft endoscopes, and no purpose-made sheath or endoscope is needed; the device is small, exquisite, simple in structure, convenient to use and low in cost.

Description

technical field [0001] The invention belongs to the field of medical equipment, and in particular relates to a negative pressure suction adjustment device for transthecal endoscopic lithotomy. Background technique [0002] Urinary tract stones are a common clinical disease. Percutaneous nephrolithotripsy and flexible ureteroscopy and other transsheath endoscopic stone removal operations are the most common treatment methods for kidney and ureteral stones. The essence of transthecal endoscopic stone extraction is a minimally invasive surgical procedure in which a hollow sheath is inserted into the human body and reaches the surgical site (renal pelvis and upper ureter), and then the sheath is placed into the endoscopic stone extraction. The central water injection channel infuses physiological saline into the kidney to ensure a clear surgical field of view, but this can lead to an increase in the internal pressure of the renal pelvis, which can easily cause bacteria to flow b...

AI Technical Summary

Problems solved by technology

Existing negative pressure lithotripsy techniques include: 1. Ultrasonic lithotripsy probe rod and equipment. Disadvantages: Ultrasonic lithotripsy has low efficiency and often needs to cooperate with other lithotripsy equipment. 2. A special sheath body or mirror body with stone suction channel and / or intrarenal pressure measurement channel can be equipped with negative pressure monitoring and control equipment and instruments

Disadvantages: 1. Special channel for negative pressure suction or intrarenal pressure measurement needs to be set on the sheath or mirror body, which is technically difficult and increases the diameter of the sheath or mirror body, which not only limits other operating channels but also increases channel-related damage; 2 .Pure negative pressure suction without accurate negative pressure suction control equipment can cause excessive negative pressure, which can easily lead to intrarenal hemorrhage, tissue-attached endoscopy, unclear vision, or too small negative pressure, low pressure or negative pressure in the kidney The state cannot be maintained, the drainage is not smooth, and the gravel cannot be sucked out

3. Although the special negative pressure suction and monitoring equipment can adjust the negative pressure and monitor the intrarenal pressure in real time, it needs to be operated by a special person, and the operator himself cannot set and control the negative pressure state

In fact, the intra-renal pelvic pressure does not need to be monitored accurately in real time, but only needs to maintain an appropriate intrarenal low pressure or negative pressure; 4. At present, the most widely used one-time peeling sheath or ureteral passage sheath is the most widely used in transsheath endoscopic stone extraction , the negative pressure suction device should be easily connected to it, instead of a special sheath or mirror body; 5. The existing metal or plastic negative pressure suction connection device cannot observe the drainage status of the sheath tube, and the aspirated debris during the operation can often block the pipeline , resulting in poor drainage and cannot be dealt with in time, resulting in low pressure or negative pressure in the kidneys that cannot be maintained

Therefore, the existing negative pressure suction crushing system has technical difficulties, complex structure, inconvenient use, multiple supporting equipment and instruments, and high cost, etc., and is not suitable for extensive application.

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