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Ureter sheath

A technology of ureter and sheath, applied in the field of ureter sheath, can solve the problems of unclear surgical field, affecting surgical operation, and inability of fluid to be discharged smoothly through the sheath, etc., and achieve the effect of clear surgical field.

Active Publication Date: 2018-08-17
THE SECOND HOSPITAL AFFILIATED TO WENZHOU MEDICAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the upper part of the ureter is narrow and cannot pass through the sheath, only the following two options can be used: 1. Naked mirror passes through the ureter to reach the operation field for operation. Surgical operations, and even some patients have renal pelvic pressure due to the inability to discharge the fluid in the surgical field, which can cause serious complications such as severe urinary infection and perirenal hematoma

Method used

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Embodiment Construction

[0018] Such as Figure 1-10 As shown, the ureteral sheath includes a flexible mirror sheath 1 and a sheath core 2. The flexible mirror sheath 1 includes a sheath main body 101 and a guide head 102 arranged at the front end of the sheath main body 101. The outer sheath main body 101 is a tubular member The diameter of the outer sheath body 101 of the flexible scope outer sheath 1 can be the same as that of the existing flexible scope sheath, and can be matched with the flexible ureteroscope, and the same material can be used. The guide head 102 is tapered with a small front and a large rear Tubular, with the tip facing forward, the diameter of the rear end is preferably smaller than the diameter of the outer sheath body 101, and a section of the tube wall at the front end of the outer sheath body 101 (preferably at a suitable angle of inclination) extends to form a connecting portion 103 connected with the guide head 102 Integral, while openings are formed on the sides. The ma...

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Abstract

The invention relates to a ureter sheath for flexible ureteroscope surgery. The ureter sheath comprises a flexible ureterscope outer sheath and a sheath inner core. According to the ureter sheath, a conical tubular guiding head with the small front part and the large part is arranged at the front end of the flexible ureterscope outer sheath, and meanwhile an opening is formed in the side face; thesheath inner core with the tubular body and the conical tubular front end is in clearance fit with the inner aperture of the outer sheath body, the front end of the sheath inner core is conical tubular and is matched with an inner hole of the guiding head and a connecting part, an insertion positioning structure is arranged between the front end of the sheath inner core and the rear end of the guiding head, during flexible ureteroscope surgery, when the upper section of a ureter is narrow and cannot pass through the flexible ureterscope outer sheath, the flexible ureterscope outer sheath cannot continue to enter when entering along a guide wire indwelling inside the ureter to the narrow part of the ureter, the sheath inner core exits, and the front end of the flexible ureterscope outer sheath crosses the narrow position of the flexible ureterscope outer sheath, so that the opening in the front end of the flexible ureterscope outer sheath is located below the narrow part so that the naked ureterscope can pass through the narrow section to reach the surgery field, during surgical operation, pouring liquid continues to enter the surgery field through the ureterscope, the surgery field ureterscope is drained into the sheath through an outward extending catheter, and the surgery field is kept clear.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a ureteral sheath for flexible ureteroscopic surgery. Background technique [0002] Clinically, a ureteric sheath must be inserted into the ureter before flexible ureteroscopic surgery, and the flexible ureteroscope enters the ureteral sheath to reach the upper segment of the ureter or the renal pelvis for surgical operations. During the operation, the fluid in the operative field is continuously perfused through the flexible ureteroscope, and the fluid in the operative field is continuously discharged out of the body through the ureteric sheath to keep the operative field clear. If the upper part of the ureter is narrow and cannot pass through the sheath, only the following two options can be used: 1. Naked mirror passes through the ureter to reach the operation field for operation. Surgical operations, and even some patients have renal pelvic pressure due to the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/00A61B1/005A61B1/00
CPCA61B1/00131A61B1/005A61B17/00234A61B2017/00238
Inventor 饶大庞虞海峰
Owner THE SECOND HOSPITAL AFFILIATED TO WENZHOU MEDICAL COLLEGE
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