Recyclable self-expanding flexible ureteroscope sheath

A flexible ureteroscope and self-expanding technology can be applied to catheters, endoscopes, trocars, etc., and can solve the problems of inability to expand and recover, difficult to complete the operation, difficult to operate, etc., and achieves convenient operation, high practicability, Easy-to-use effects

Pending Publication Date: 2022-06-21
GUANGAN PEOPLES HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The style is fixed, unable to expand and recycle, and difficult to operate;
[0005] 2. The flexible ureteroscope sheath is made of hard material, and it is difficult to place it under unfavorable conditions such as ureteral stenosis and distortion, and it is difficult to complete the operation;

Method used

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  • Recyclable self-expanding flexible ureteroscope sheath
  • Recyclable self-expanding flexible ureteroscope sheath
  • Recyclable self-expanding flexible ureteroscope sheath

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] like Figure 1-Figure 4 As shown, the present embodiment provides a recyclable self-expanding flexible ureteroscope sheath, including a mounting seat 1, a through hole 2 is opened at the middle position of the mounting seat 1, and the inner wall of the through hole 2 is evenly fixed with a return spring 3, the return spring The sheath wall plates 4 are fixed on the 3, and the sheath wall plates 4 are attached to each other. The interior of the sheath wall plates 4 is provided with an air cavity 5. A connecting rod 7 is fixed between the bar-shaped pistons 6 inside the air group cavity 5, a fixed tube 8 is fixed on the top of the mounting seat 1, an inflatable mechanism 9 is arranged on the outside of the fixed tube 8, and the sheath wall plate 4 is made of PVC. The sheath wall plates 4 are provided with four groups, and the shapes of the sheath wall plates 4 are all arcs, and the inner diameters of the sheath wall plates 4 are the same.

[0027] In the process of use, ...

Embodiment 2

[0029] In this embodiment, as Figure 1-Figure 4 As shown, the inflation mechanism 9 includes a sleeve 10, an annular piston 11 and an adjustment ring 13. The sleeve 10 is fixed on the top of the mounting seat 1, and the sleeve 10 is sleeved on the outside of the fixed pipe 8. The fixed pipe 8 and the sleeve 10 An annular piston 11 is slidably arranged between the two rings, a fixed rod 14 is evenly fixed on the top of the annular piston 11, an adjusting ring 13 is threadedly installed on the fixed pipe 8, the top of the fixed rod 14 is slidably connected with the adjusting ring 13, and the bottom of the sleeve 10 is slidably connected. A capillary 12 is arranged between the air chamber 5 and the air chamber 5 .

[0030] During the inflation process, hold the outer side of the sleeve 10 with one hand, and turn the adjusting ring 13 with the other hand to control the downward movement of the adjusting ring 13, so that the gas between the fixed tube 8 and the inside of the sleev...

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PUM

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Abstract

The invention discloses a recoverable self-expanding flexible ureteroscope sheath, and belongs to the technical field of medical instruments, the recoverable self-expanding flexible ureteroscope sheath comprises a mounting seat, a through hole is formed in the middle position of the mounting seat, reset springs are uniformly fixed on the inner wall of the through hole, sheath wall plates are fixed on the reset springs, the sheath wall plates are attached to each other, and the sheath wall plates are fixed on the mounting seat. And air cavities are formed in the sheath wall plates, and strip-shaped pistons are arranged at the two ends of the interior of each air cavity in a sliding mode. Through the arrangement of the soft endoscope sheath composed of the four sheath wall plates, the air cavities in the sheath wall plates, the strip-shaped pistons and the connecting rods, in the using process, the soft endoscope sheath can be expanded and shrunk by inflating air into the air cavities, the PVC soft endoscope sheath can be bent due to the soft characteristic of the PVC soft endoscope sheath, and it is effectively avoided that in the operation process, the flexible endoscope sheath is not prone to being damaged; and moreover, the burden of a patient and the cost of seeing a doctor are reduced, the practicability is higher, and the use is more convenient.

Description

technical field [0001] The invention relates to a flexible ureteroscope sheath, in particular to a retractable self-expandable flexible ureteroscope sheath, which belongs to the technical field of medical devices. Background technique [0002] Flexible ureteroscopic lithotripsy is a minimally invasive surgical method for the treatment of kidney stones and is widely used in clinical practice. Flexible ureteroscopic sheath is a commonly used consumable in flexible ureteroscopic lithotripsy. 14 / 16F, the normal inner diameter of the ureter is about 3-5mm, clinically, most patients cannot complete the flexible ureteroscopic lithotripsy in one stage, the reason is that the ureter is not dilated, the flexible ureteroscope sheath is difficult to insert, and it is easy to force the sheath. Lead to ureteral mucosal injury, bleeding, perforation, etc., often requiring two-stage surgery. [0003] There are the following problems in the flexible ureteroscope sheath in the prior art: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/34A61B1/00
CPCA61B17/3439A61B1/00131A61B2017/345
Inventor 蓝建华
Owner GUANGAN PEOPLES HOSPITAL
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