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Lead extraction methods and apparatus

A lead wire, the technology of the lead wire, applied in medical science, surgery, heart electrodes, etc., can solve problems such as tearing internal blood vessels, injury, and patient danger

Inactive Publication Date: 2012-02-08
LEADEX CARDIAC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, if there is more than one lead in the vein, the leads can become interlocked, creating a relatively complex extraction procedure that is often problematic with existing lead extraction devices
Lead extraction devices that utilize the lumen inside the lead for extraction do not address the issue of fibrous tissue attached to the outside of the lead, and therefore may not work, or use excessive force to extract the lead with a significant risk of tearing rupture vital internal blood vessels and cause dangerous, sometimes fatal injuries to the patient

Method used

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  • Lead extraction methods and apparatus
  • Lead extraction methods and apparatus
  • Lead extraction methods and apparatus

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Embodiment Construction

[0035] As previously mentioned, most existing extraction techniques rely on rudimentary manual cutting devices, or laser or diathermy devices that use laser or electrical energy to melt surrounding tissue. Disadvantages of existing manual cutting devices include that manual devices are often clumsy and difficult to operate, thereby relying heavily on the skill of the physician and complicating the procedure at an increased risk. In particular, manipulating the cutting blade and advancing the device to fully release the lead is extremely difficult and often results in excessive tissue damage, as well as other complications and / or a more invasive surgical procedure to extract the lead. Laser or diathermy devices are an improvement over existing manual extraction devices in terms of complexity and success of lead extraction, however, such devices are expensive and may not be available to the performing surgeon.

[0036] Applicants have realized that semi-automatically or fully au...

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Abstract

According to one aspect, a device for assisting in removing an implanted lead is provided. The device comprises a body portion having a center adapted to accommodate the lead, a cutting component coupled to the body portion to assist in separating tissue from the lead, and at least one anchoring component disposed at least partially within the body portion, the at least one anchoring component capable of providing pressure on the lead that resists movement of at least part of the body portion along the lead at least in part by applying fluid pressure.

Description

technical background [0001] Many heart conditions are typically treated with pacemakers or implantable cardioverter-defibrillators (ICDs), which deliver electrical energy to the heart muscle so that the patient's heart beats at a normal rhythm. Typically, such devices are implanted by inserting thin, flexible leads into a vein to guide one or more distal electrodes into the atria and ventricles. The leads deliver electrical energy to the myocardium via distal electrodes in contact with and / or anchored in each ventricular wall according to the desired heart rhythm. The proximal end of the lead is connected to an energy source that generates electrical energy that is provided to the heart via the distal electrode. [0002] figure 1 A schematic diagram of an example of pacemaker implantation is shown. The lead wire 120 has a terminal connector 130c at one end and distal electrodes 130a and 130b at the other end. Lead wires are inserted into the left or right subclavian vein a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/3205A61N1/05
CPCA61B2017/00539A61B2017/00544A61N1/056A61B17/32053A61B17/3468A61B17/3205A61N2001/0578
Inventor 沃夫·奥罗姆斯基罗伊·莎菲雅各布·科伦
Owner LEADEX CARDIAC
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