Embolectomy devices

A technology of offset and joint structure, applied in medical science, surgery, prosthesis, etc., can solve problems such as insufficient hardness and resistance to overcome embolic obstructions

Active Publication Date: 2018-06-08
STRYKER CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, in certain applications (e.g., hard / dense embolic obstructions 75), the radial expansion force 33 of the thrombectomy device 12 is not sufficient to overcome the stiffness and resistance 36 of the embolic obstruction 75 to allow the struts of the device 12 to penetrate. Clot 75 enters and becomes integral with clot 75, causing device 12 to instead take the path of least resistance by extending around obstruction 75, as shown in FIG. 3D

Method used

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Embodiment Construction

[0028] For the following defined terms, these definitions shall apply unless a different definition is given in the claims or elsewhere in this specification.

[0029] All numerical values ​​herein are assumed to be modified by the term "about", whether expressly stated or not. The term "about" generally refers to a range of numbers that one of skill in the art would consider equivalent to the recited value (ie, having the same function or result). In many instances, the term "about" may include numerical values ​​that are rounded to the nearest significant figure. The recitation of numerical ranges by endpoints includes all numbers within that range (eg, 1 to 5 includes 1, 1.5, 2, 2.75, 3, 3.80, 4, and 5). As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the content clearly dictates otherwise. As used in this specification and the appended claims, the term "or" is generally employed in its sense i...

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Abstract

An embolectomy device (112) includes a clot engaging structure comprising a plurality of interconnected struts (124) forming an open cell structure having an inner lumen, wherein the clot engaging structure is biased to expand or otherwise expandable from a radially constrained configuration to a radially expanded configuration when released from a delivery catheter into a blood vessel; and a support structure (200) positioned within the inner lumen of the clot engaging structure, the support structure (200) comprising a plurality of connectors (230) connected to respective struts (124) of theclot engaging structure, wherein the support structure (200) connectors are biased to move or otherwise movable from a radially constrained configuration to a radially expanded configuration to thereby cause or otherwise assist and/or facilitate and maintain expansion of the open cell clot engaging structure.

Description

technical field [0001] The invention disclosed herein relates generally to medical devices configured for removing embolic obstructions from the vasculature. Background technique [0002] A thrombus, embolism, or clot can occur in a person's vasculature. Sometimes this clot dissolves harmlessly in the bloodstream. Other times, however, such clots can lodge in blood vessels where they can partially or completely block blood flow, known as an ischemic event. Severe tissue damage can result if a partially or completely blocked blood vessel supplies blood to sensitive tissues, such as the brain, lungs, or heart. Such ischemic events can also be exacerbated by atherosclerosis, a vascular disease that causes blood vessels to narrow and / or twist. In certain instances, narrowing and / or increased twisting of blood vessels can lead to the formation of atherosclerotic plaques, which can lead to further complications. [0003] Known thrombectomy devices are used in a variety of appl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/221
CPCA61B17/22A61B17/221A61B2017/22034A61B2017/2215A61F2002/016A61F2/011
Inventor 王佳绪瑞安·M·格兰德费尔德
Owner STRYKER CORP
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