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Bendable ureteral sheath

A ureteral and bending technology, applied in the fields of medical devices and ureteral sheaths, can solve the problems of inability to perform lithotripsy, inability to perform lithotripsy surgery, and high risk of lithotripsy surgery, so as to facilitate recovery as soon as possible, improve surgical safety, and reduce stone removal. burden effect

Pending Publication Date: 2018-01-09
海盐康源医疗器械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the stone stays in the renal pelvis and calices, using this method, the ureteral sheath enters the upper part of the ureter, because the front end of the sheath cannot be bent at will, and cannot be pushed forward to reach the predetermined stone site in the kidney, so the stone removal operation cannot be performed as commonly used in clinical practice. In the "flexible ureteroscope holmium laser lithotripsy", lithotripsy cannot be performed, and there is a risk of puncturing the kidney if it is pushed further
Using the retrograde metho

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0019] refer to figure 1 and image 3 , a flexible ureteral sheath of the present invention, comprising a dilating tube 1, a sheath tube, a sheath tube joint 3, a fixed joint 10, a traction steel wire 21, a locking mechanism 4, a negative suction joint 31, and an adjustment device, and the sheath tube is connected by The semi-soft non-bendable section 2 and the soft-bendable section 20 that can bend in two directions are composed, the semi-soft non-bendable section 2 is connected with one end of the sheath tube joint 3, and the expansion tube 1 passes through the sheath tube and The sheath tube joint 3, one end of the expansion tube 1 is connected with a fixed joint 10, the fixed joint 10 is connected with the sheath tube joint 3 through the locking mechanism 4 for locking the combination of the sheath tube and the expansion tube 1, and a The traction steel wire 21, one end of the traction steel wire 21 is fixed on the end of the soft bendable section 20 away from the semi-so...

Embodiment 2

[0021] refer to figure 2 The difference between the second embodiment and the first embodiment is that the adjustment device is composed of a housing 6, an adjustment trigger 61 that can rotate back and forth, and a transmission gear 60. The housing 6 is fixed on the sheath tube joint 3, and one end of the trigger 61 is fixed on the housing 6 inside, the housing 6 is provided with a transmission gear 60, the traction wire 21 is fixed on the transmission gear 60, and the trigger 61 is fixed with an arc-shaped rack 62 meshing with the transmission gear 60, and the housing 6 is provided with a Through the through groove 65 on both sides of the shell 6, a lock catch 66 that can move along the through groove 65 is stuck in the through groove 65, and the side of the lock catch 66 opposite to the transmission gear 60 is provided with a tooth that meshes with the transmission gear 60. Groove 67, the sheath joint 3 is provided with a deceleration settling chamber 30, the deceleration ...

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Abstract

The invention discloses a bendable ureteral sheath, which comprises a dilating tube, a sheath tube, a sheath tube joint, a fixed joint, a traction steel wire, a locking mechanism, a negative suction joint, and an adjustment device. It consists of a curved section and a soft bendable section that can be bent in two directions. The semi-soft non-bendable section is connected to one end of the sheath tube joint. The expansion tube passes through the sheath tube and the sheath tube joint. One end of the expansion tube is connected to a fixed The joints are connected, and the fixed joint is connected with the sheath tube joint through a locking mechanism for locking the combination of the sheath tube and the expansion tube, and a traction steel wire is passed through the sheath tube. The present invention can not only keep the combined locking of the sheath tube/dilator tube during dilation, but also ensure the locking of the flexible ureteroscope during operation by adopting the rotation locking method, especially when it is used in "flexible ureteroscope holmium laser lithotripsy", it can ensure that the flexible ureteroscope The holmium laser locks the position to prevent damage to the kidney during surgery.

Description

【Technical field】 [0001] The invention relates to the technical field of medical instruments, in particular to the technical field of ureteral sheaths. 【Background technique】 [0002] Urinary tract calculus is one of the most common urological diseases. Among them: kidney stones account for more than 70%. Except for those with mild symptoms, extracorporeal lithotripsy equipment is used to crush the stones and let them be discharged with urine. There are usually two ways to use surgical treatment. One way is the antegrade method, and the stone is removed through the urethral dilation ureteroscope. This method treats stones through the natural orifice of the human body, and has the advantages of less trauma, quick recovery, and definite curative effect. It has become a routine treatment method for upper urinary tract stones. The second is the retrograde method, percutaneous renal puncture and minimally invasive ureteroscopy to remove stones. [0003] When performing urinary ...

Claims

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Application Information

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IPC IPC(8): A61B18/26A61B18/24
Inventor 郁鹏忠张红明钱江
Owner 海盐康源医疗器械有限公司
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