Width-adjustable cutting instrument for transapical aortic valve resectioning

An aortic and transapical technology, applied in the direction of surgical cutting instruments, endoscopic cutting instruments, dissection instruments, etc., can solve the problems of aortic valve not having the best fit, thrombus, inaccuracy, etc.

Active Publication Date: 2015-07-29
AESCULAP AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The process of separating the calcified aortic valve using laser technology is time-consuming and imprecise
Valve removal using "active pulse pressure devices" is currently not feasible because the rigid punch, which has been matched to the inner diameter of the aorta, must pass through the constricted aortic valve, and chalk particles deposited on the aortic valve can become loose and into the blood circulation, which can lead to blood clots
Another problem here is the fact that the diameter of the aorta varies in the range between approximately 15mm and 35mm, so that the rigid punch does not have an optimal diameter in most cases, which in turn leads to all the The supplied aortic valve does not have an optimal fit

Method used

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  • Width-adjustable cutting instrument for transapical aortic valve resectioning
  • Width-adjustable cutting instrument for transapical aortic valve resectioning
  • Width-adjustable cutting instrument for transapical aortic valve resectioning

Examples

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Embodiment Construction

[0074] figure 1 A cutting instrument 2 is shown which is designed according to the invention and which has its distal end of the tool shaft 4 equipped with a cutting unit 6 which can be driven by means of a handpiece 8 arranged on the proximal end of the tool shaft 4 . The shaft 4 may be rigid or flexible; it may be possible to manipulate the shaft by means of a hand piece 8 if necessary. The cutting unit 6 is basically formed as a punch-die unit and consists of two cutting tools 10 and 12 which are arranged axially on the tool shaft 4 and which are movable towards and away from each other by means of a handpiece 8 . More precisely, the proximal cutting tool 10 in the illustrated example acts as a movable punch unit and the distal cutting tool 12 acts as a static die unit. Of course, in alternative designs, the distal cutting tool 12 can be moved towards the proximal cutting tool 10, or both cutting tools can be moved relative to each other.

[0075] The cutting tools 10, 12...

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Abstract

The invention relates to a surgical cutting instrument (2) for transapical aortic valve resectioning, which instrument has a cutting unit (6) arranged at the distal end of a tool shaft (4) with at least one mechanical cutting element (16) for executing a circular cut. According to the invention, the at least one cutting element (16) can be adjusted, particularly in a continuously variable manner, to differing aortic diameters by means of a radially displaceable adjusting mechanism.

Description

technical field [0001] The invention relates to a surgical (in particular endoscopic) cutting instrument for transapical aortic valve resection according to the preamble of claim 1 . Background technique [0002] In the case of aortic valve stenosis or insufficiency, surgery is indicated in many cases where the body's own aortic valve is replaced with an artificial aortic valve. In addition to open surgery (which is performed under general anesthesia using a cardiopulmonary device and uses a saw blade to open the sternum to expose the heart and which must be stopped), minimally invasive surgery can be performed on a beating heart. Aortic valve replacement. In this case, a transfemoral (transfemoral) or transapical (transapical) access route is chosen. [0003] One possible approach is the introduction of an aortic valve prosthesis, which expands automatically or with the aid of a balloon and replaces the body's own aortic valve. However, if the natural aortic valve is not...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/32A61B17/3205A61B17/3207A61B17/00A61B17/22
CPCA61B17/320016A61B2017/320716A61B2017/22097A61B17/32053A61B17/3209
Inventor 佩德罗·莫拉莱斯迪特尔·魏斯豪普特
Owner AESCULAP AG
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