Basket-type grasping forceps

A technology of pliers and the main body, which is applied in the field of holding pliers for stone-taking baskets, and can solve problems such as the inability to pull out the stone-taking basket and the inability to pull out the stone-taking basket from pipelines, etc.

Active Publication Date: 2016-08-17
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The stone retrieval basket type holding pliers has a structure that uses multiple wires to hold foreign objects, so in the case of recovering a large foreign object, sometimes the stone retrieval basket cannot be pulled out from the pipeline while holding the foreign objects
For example, if the foreign matter cannot be removed from between the multiple lines described in Patent Documents 1, 2, and 3, the stone extraction basket cannot be pulled out from the pipeline.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0035] The stone retrieval basket type grasping forceps according to the first embodiment of the present invention will be described. figure 1 It is an overall view of the stone retrieval basket type holding forceps of this embodiment. figure 2 It is a cross-sectional view of the stone basket-type grasping forceps of this embodiment. image 3 yes figure 2 A cross-sectional view of the A-A line.

[0036] figure 1 with figure 2 The illustrated stone retrieval basket-type grasping forceps 1 is a medical instrument for inserting and removing foreign matter in a duct such as a bile duct.

[0037] Such as figure 1 As shown, the stone-taking basket-type holding forceps 1 includes a sheath 2 , a main body portion 3 penetrating through the sheath 2 , and an operating portion 15 fixed to the sheath 2 .

[0038] The sheath 2 is a flexible cylindrical member. The sheath 2 has an external dimension capable of freely moving forward and backward relative to the treatment instrum...

Deformed example 1－1

[0078] Next, a modified example of the stone retrieval basket type grasping forceps 1 of the above-mentioned embodiment will be described. Image 6 It is a side view which shows the structure of this modification.

[0079] Such as Image 6 As shown, the stone-taking basket-type grasping pliers 1A of this modified example does not have the center wire 14 .

[0080] The stone retrieval basket-type holding forceps 1A of this modified example is also the same as the stone retrieval basket type holding forceps 1 of the above-mentioned first embodiment, by sliding the sleeve 12 from the distal end of the stone retrieval basket 4 to the proximal side to make the stone retrieval basket 4 move. 4. The diameter gradually decreases from the distal side to the proximal side.

[0081] Therefore, the stone retrieval basket type grasping forceps 1A of this modified example also exhibits the same effect as that of the first embodiment.

Deformed example 1－2

[0083] Next, another modified example of the stone basket-type grasping forceps 1 of the above-mentioned first embodiment will be described. Figure 7 It is a side view which shows the structure of this modification.

[0084] Such as Figure 7 As shown, the stone-picking basket-type grasping forceps 1C of this modified example has a stone-picking basket portion 4A having a shape different from that of the above-mentioned first embodiment.

[0085] The stone retrieval basket 4A has a plurality of stone retrieval basket wires 5A that bind two wires on the proximal side and branch each wire from the middle portion toward the distal side. In the stone extraction basket 4A of this modification, the opening is made smaller on the distal side and the opening is larger on the proximal side because the stone extraction basket wire 5A has branches.

[0086] The stone retrieval basket-type holding forceps 1C of this modified example is also the same as the stone retrieval basket type h...

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PUM

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Abstract

The stone retrieval basket type holding pliers of the present invention comprises: a sheath; a main body, which has a distal end and a proximal end, and penetrates through the sheath; and an operating part, which is fixed to the sheath and installed with a The proximal end of the main body. The main body includes: a stone extraction basket, which is provided on the distal side of the main body, has a substantially spindle-shaped shape, and can hold foreign objects; a first wire, which is provided on the proximal side of the stone extraction basket. , and fixed on the stone retrieval basket; and a removal mechanism, which is installed on the stone retrieval basket, for moving the foreign matter in the stone retrieval basket. The stone extraction basket part includes: a plurality of stone extraction basket wires; and a fixing member for binding and fixing the plurality of stone extraction basket wires. The removal mechanism includes: a sliding sleeve, which is arranged on the distal side of the stone retrieval basket, through which the plurality of stone retrieval basket wires penetrate, and the sliding sleeve can move forward and backward freely relative to the plurality of stone retrieval basket wires; And the second wire, the distal end of which is fixed to the sliding sleeve, and can make the sliding sleeve advance and retreat relative to the stone retrieval basket wire.

Description

technical field [0001] The invention relates to a stone basket-type holding pliers. [0002] this application claims priority based on Japanese Patent Application No. 2013-233973 for which it applied in Japan on November 12, 2013, and uses the content here. Background technique [0003] Conventionally, there are known stone-retrieving basket-type grasping forceps that are inserted into channels in the body such as bile ducts and are used to recover foreign bodies such as stones (for example, refer to Patent Documents 1, 2, and 3). [0004] The stone retrieval basket type holding pliers has a structure that uses multiple wires to hold foreign objects. Therefore, when a large foreign object is to be recovered, sometimes the stone extraction basket cannot be pulled out from the pipeline while the foreign object is held. For example, if the foreign matter cannot be removed between the multiple lines described in Patent Documents 1, 2, and 3, the stone basket cannot be pulled ou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/221
CPCA61B17/221A61B2017/2212
Inventor 岩渕章久早川知孝
Owner OLYMPUS CORP
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