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Snare device for catching an object

A technology of traps and objects, applied in medical science, surgical cutting instruments, surgery, etc., can solve problems such as large diameter tubes, punctures, and thrombus formation

Active Publication Date: 2016-04-27
PFM MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because these specialized instruments have larger diameter tubes than traditional snare devices, this presents another disadvantage
The hollow member has a significantly larger diameter, which can lead to complications on the puncture side
The result is thrombosis and / or secondary bleeding that is difficult to stop

Method used

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  • Snare device for catching an object
  • Snare device for catching an object
  • Snare device for catching an object

Examples

Experimental program
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Effect test

Embodiment Construction

[0028] figure 1 Shown is the snare device of the present invention for catching objects, especially for catching objects or foreign objects in a human body or an animal. The snare device has a catheter 1 and a snare. The snare is made of soft elastic shape memory material, wherein the snare can move relative to the catheter 1 and can be pulled into and pushed out of the catheter 1 . After being pushed out of the catheter, the snare unfolds into its memorized original shape. This is due to material stresses caused when the snare is pulled into the catheter 1 , which occurs during pushing the snare out of the catheter 1 . The snare has a first ring 3 and a second ring 4 which are connected to each other via a twist zone 7 . At the distal end 11 of the catheter 1 the snare is provided with a sheath 2 . The first ring 3 is substantially triangular in shape and together with the second ring 4 forms an overlapping zone 6 . Furthermore, the first ring has protrusions 5 .

[002...

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PUM

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Abstract

The invention relates to a snare device for catching an object, in particular for catching objects or foreign bodies in a human or animal body, said snare device comprising a hollow element, in particular a catheter, and a snare made of a flexible elastic shape-memory material, wherein the snare is movable relative to the hollow element and can be pulled into the hollow element and pushed out of it, and wherein the snare has an impressed original shape to which said snare returns, when pushed out from the hollow element, as a result of the material stresses caused when it was pulled in, wherein the original shape of the snare has a twisted area, as a result of which a first loop and a second loop are formed, wherein the first loop is arranged substantially parallel to the longitudinal axis of the hollow element, and the second loop is at an angle with respect to the longitudinal axis of the hollow element, and which is characterized in that the snare thus deformed is introduced into the hollow element and is arranged inside the hollow element, in that the second loop is pivoted relative to the first loop and through the first loop, such that the second loop, on emerging from the hollow element, pivots back through the first loop as a result of the load being removed from the shape-memory material, thereby allowing the object to be enclosed.

Description

technical field [0001] The invention relates to a snare device for catching objects, especially for catching objects or foreign objects in human body or animal body. The snare device includes a hollow member, especially a catheter, and a snare made of soft elastic shape memory material wherein the snare is movable relative to the hollow member and can be drawn into and out of the hollow member, and wherein the snare has a memorized original shape, i.e. The resulting material stress, when pushed out of the hollow member, allows the snare to return to its original shape, wherein the original shape of the snare has a torsion zone under which the first ring and the second ring are formed. Two rings, wherein the first ring is arranged substantially parallel to the longitudinal axis of the hollow member and the second ring is at an angle relative to the longitudinal axis of the hollow member. Background technique [0002] Snare devices for catching objects made of shape memory ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/221
CPCA61B17/221A61B17/32056A61B2017/00358A61B2017/00867A61B2017/00871A61B2017/22035A61B2017/2212A61B2017/2217A61B2017/00902
Inventor 伯恩哈德·克赖曼
Owner PFM MEDICAL
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