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Calculus-removing mesh basket

A technology of stone mesh and basket, which is applied in the field of medical devices, can solve the problems of inability to crush stones, incarceration, and the inability of the stone extraction mesh basket to disengage from stones, so as to reduce the pain of patients and reduce the risk of surgery

Active Publication Date: 2016-10-05
HANGZHOU AGS MEDTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the disadvantages of the existing stone retrieval mesh baskets that are incarcerated and unable to break stones during clinical use, so that the stone retrieval mesh baskets cannot be dislodged from the stones, the present invention provides a stone retrieval mesh basket that can remove the mesh when incarceration occurs. The basket wire is released from the stone, thereby safely dislodging the incarcerated mesh basket from the patient's biliary tract

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment one, in figure 1 on the basis of combining Figure 2 to Figure 6 As shown, the safety release device of the present invention includes a safety wire 7, and the safety wire 7 can be a wire or a rope, preferably, can be a metal wire or a rope, and the safety wire 7 can be basically consistent with the shape of the net basket wire, Facilitate stone removal from the basket; the safety wire 7 can be sleeved inside the sheath or placed outside the sheath, the distal end 7-1 of the safety wire 7 penetrates into the end cap 6 and wraps around the distal end of the basket wire 5 5-1, the distal portion 5-1 of the wire basket 5 can be bent into a hook or loop (such as Figure 5 Shown in (b), certainly also can be other mode that is convenient to make safety wire 7 loops entangle net basket 5 far-end parts, make the far-end part 5-1 of net basket wire 5 be fixed in the end cap 6 in normal state , the proximal end of the safety wire 7 is connected to the upper handle 1...

Embodiment 2

[0043] Example two, in figure 1 on the basis of combining Figure 7 to Figure 11 As shown, another safety release device of the present invention includes a pull-off piece 10, and the pull-off piece 10 can be made of various materials, such as polymer materials, metal materials, preferably soft metal materials such as silver, gold and copper, etc. , the pull-off piece 10 is placed in the end cap 6' non-detachably, for example, the pull-off piece 10 is fixed in the end cap 6' by bonding, crimping or welding, and the pull-off piece 10 is provided with at least one clamping hole, The card hole can be a round hole, a square hole or a special-shaped hole (such as Figure 10 As shown), the distal end of the basket wire 5' is inserted into the clamping hole and fixed in position, so that the basket wire 5' is caught in the end cap 6' in a normal state.

[0044] Another operation mode of the stone extraction basket of the present invention is as follows: in the initial state, the ba...

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Abstract

The invention provides a calculus-removing mesh basket. The calculus-removing mesh basket comprises a handle, a sheath tube with the near end connected with the handle, a pushing-pulling rope sleeved with the sheath tube and a mesh basket part arranged at the far end of the sheath tube. The two ends of the pushing-pulling rope are connected with the mesh basket part, and the mesh basket part extends out of the far end of the sheath tube or is shrunk to the far end of the sheath tube under traction of the pushing-pulling rope; the mesh basket part comprises a plurality of mesh basket wires, a plurality of end caps and a safety releasing device, when the mesh basket part is located in the normal state, the far ends of the multiple mesh basket wires are fixed inside the end caps through the safety releasing device, and when mesh-basket-part calculus removing is subjected to incarceration, the far ends of the multiple mesh basket wires are released out of the end caps through the safety releasing device. According to the calculus-removing mesh basket, the mesh basket wires can be released out of the end caps through the safety releasing device when calculus removing is subjected to incarceration, and the mesh basket is further safely released out of the patient biliary tract; the problem that taking needs to be carried out through surgical operation when incarceration occurs is solved; meanwhile, the surgical risk is greatly reduced, and patient pain is reduced.

Description

technical field [0001] The invention belongs to a stone removal device in the field of medical equipment, in particular to a stone removal mesh basket used in conjunction with an endoscope. Background technique [0002] The stone basket is a commonly used medical device for ERCP (endoscopic retrograde cholangiopancreatography) operations such as biliary stone removal. The removal of biliary stones is performed under X-rays, and the visual field is incomparable with the effect of direct vision under endoscopy. It is often difficult to judge the shape of the stones during the actual operation, and it is inevitable that there will be inaccuracies. Accurately judge the size of the stone, or even misjudge the size of the stone; in addition, the size of the large duodenal papilla itself is limited; for larger stones, when the operator finds that the large duodenal papilla cannot be forcibly pulled out, it is already The situation of incarceration of the net basket that is often s...

Claims

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Application Information

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IPC IPC(8): A61B17/221
Inventor 李丽清时百明
Owner HANGZHOU AGS MEDTECH CO LTD
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