Scar exsector for urethra

Abstract

The invention discloses a scar exsector for the urethra. The scar exsector comprises a fixed shelf, a bent probe, a straight probe, a probe sheath, a sheath core, a puncture needle and a trepan cutter. The fixed shelf comprises a rod part, and a first locating part and a second locating part are arranged at the two ends of the rod part respectively. A straight line section of the bent probe can befixed to the fixed shelf through the first locating part, and a locating sunken part is arranged at the end of an arc-shaped section of the bent probe. The straight prove is cylindrical. The probe sheath is of a tubular structure, can sleeve the straight probe, and can be fixed to the fixed shelf through the second locating part. The sheath core is of a tubular structure, and can adaptively puncture into the probe sheath. The puncture needle can puncture into the sheath core. The trepan cutter is of a tubular structure, an annular blade part is arranged at at least one end of the trepan cutter, and the trepan cutter can sleeve the puncture needle and puncture into the probe sheath. By means of the scar exsector, the operating difficulty of an operation can be lowered, the accuracy of theoperation is improved, and thus the risk that the exsector punctures through the urethra is reduced.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a resectator for scars in the urethra. Background technique [0002] Male urethral injury ranks first among urinary system injuries, and cicatricial stricture of urethra after injury is a common sequelae. In recent years, urethral cold knife incision is commonly used to treat urethral cicatricial stricture, that is, to incise the stricture ring with a special cold knife under direct vision of the urethroscope. Cold knife incision can be performed under the guidance of inserting a thin ureteral catheter, and the excess scar tissue can be removed with electric knife if necessary. Therefore, cold knife incision is generally suitable for patients with incomplete urethral occlusion who can still pass the guide wire. If the narrow posterior urethra is completely occluded, but the length is not long, the bladder can be incised, a finger can be used as a guide in the bladder, and a r...

AI Technical Summary

Problems solved by technology

The operation of cold knife incision is complicated, and bleeding during the operation will also affect the operation, especially for patients with complete occlusion of the posterior urethra, the operation risk is high, and it is easy to cause urethral penetration

[0003] Therefore, the industry urgently needs an improved resectator for scars in the urethra to overcome the inconvenience and defects of the existing cold knife incision.

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