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Biopsy forceps of flexible ureteroscope

A technology of flexible ureteroscope and biopsy forceps, which is applied in the field of medical devices and can solve the problems of difficulty in cutting biopsy specimens and inaccessibility of flexible scopes.

Pending Publication Date: 2017-10-20
JIANGSU PROVINCE HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for suspected tumors, soft mirrors can only achieve empirical diagnosis through naked eye observation, but it is difficult to cut ideal biopsy specimens to complete pathological diagnosis, resulting in the embarrassing situation of "hard mirrors can't reach, soft mirrors can't get"

Method used

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  • Biopsy forceps of flexible ureteroscope
  • Biopsy forceps of flexible ureteroscope
  • Biopsy forceps of flexible ureteroscope

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A flexible ureteroscopic biopsy forceps, such as figure 1 As shown, it includes: a telescopic rod 2 and a handle 1 with an axial looper outside it, and the axial length of the telescopic rod 2 is greater than the axial length of the handle 1;

[0027] One end of the handle 1 is provided with a handle tail end finger sleeve 4, and the end of the telescopic rod on the corresponding side is provided with a telescopic rod tail end finger sleeve 5, and the handle tail end finger sleeve 4 and the telescopic rod tail end finger sleeve 5 are equipped with The spring 3 that makes the two tend to be in a tightened state;

[0028] The other end of the handle 1 and the telescopic rod 2 on the corresponding side are equipped with a metal net pocket 6 woven by metal wire, the metal net pocket 6 is as image 3 As shown, it is mainly composed of several warp and weft interwoven metal wires, which are circumferentially distributed on the outside of the telescopic rod 2; the main body o...

Embodiment 2

[0032] As a more preferred technical solution, on the basis of Embodiment 1, high-frequency current cutting can also be provided. The design principle is: the high-frequency current power supply device can be connected to the metal net bag through the wire, at least two conductive The spacing between the warp wires 8 is greater than the spacing between the insulated warp wires 7, and the basic schematic structure is as image 3 As shown, in simple terms, two conductive meridians 8 are used to expand and contract to imitate the function of the clip by electrocautery to cut tissue samples.

[0033] While the metal mesh bag is tightened, the biopsy can be cut so that the distal end can completely fall into the tightened metal mesh bag. Finally, the biopsy forceps are withdrawn from the working channel of the flexible scope as a whole, and the biopsy specimen can be taken out.

[0034] In this way, the collection range of the sample is expanded, regardless of whether the sample i...

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Abstract

The invention discloses a pair of biopsy forceps of a flexible ureteroscope. The pair of biopsy forceps comprises a telescopic rod and a handle which movably sleeves outside the telescopic rod in an axial direction, and the telescopic rod is greater than the handle in axial length; a grip is arranged at one end of the handle, and the end of the telescopic rod, at a corresponding side, is provided with a pull ring; an elastic part, by which the grip and the pull ring approach to a tightened state, are assembled between the grip and the pull ring; a metal net bag, which is woven by metal wires, is assembled between the other end of the handle and the telescopic rod at the corresponding side; in-vivo samples can be collected through bending and shrinking of the metal net bag; and furthermore, through high-frequency electricity, in the coordination with the metal net bag, the in-vivo tissue samples can be removed and collected.

Description

Technical field: [0001] The invention belongs to the technical field of medical devices, in particular to a flexible ureteroscope biopsy forceps. Background technique: [0002] The flexible ureteroscope can easily enter the upper ureter and renal pelvis, which are difficult to reach with the rigid ureteroscope, to realize the exploration of this part, and to complete the diagnosis and treatment of diseases such as stones and tumors. The lithotripsy tools under the soft microscope mainly include electrohydraulic lithotripsy (EHL), pulsed dye laser and holmium laser, and the lithotripsy effect is acceptable. However, for suspected tumors, soft mirrors can only achieve empirical diagnosis through naked eye observation, but it is difficult to cut ideal biopsy specimens to complete pathological diagnosis, resulting in the embarrassing situation of "hard mirrors can't reach, soft mirrors can't get it". [0003] The information disclosed in this Background section is only for enha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B10/06A61B10/04A61B18/12A61B18/14
CPCA61B10/04A61B10/06A61B18/12A61B18/14A61B2018/00517A61B2018/00601A61B2018/144
Inventor 居小兵陶俊韩志坚李恩源杨延皓顾民
Owner JIANGSU PROVINCE HOSPITAL
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