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Veno-Merse / Harvester Device

a harvester device and veno-merse technology, applied in the field of medical devices, can solve the problems of affecting the forward advancement of the harvester device, affecting the effectiveness of hydro-dissection and the anesthetic agent, and the limited forward pressure of the moving needle, so as to facilitate effective hydro-dissection of veins, effective forward advancement, and easy removal of veins

Inactive Publication Date: 2013-06-20
MAJLESSI HESHMAT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is a veno-merse / harvester device that allows for effective hydro-dissection of veins from the body. This device has several technical features: a fixed cannula system, a camera system for direct visualization, a self-adjustable cutting tip, and a one-way valve for creating higher fluid pressure. These features make the device easy to use and facilitate the removal of veins from both the lower and upper extremities. The device may also be used with local anesthesia for pain management.

Problems solved by technology

Such moveable needle has limited forward pressure due to leakage of fluid in a retrograde manner.
As a result, the effectiveness of hydro-dissection and the anesthetic agent are reduced.
An enlarged segment of the saphenous vein that is larger than the rest of the trunk may interfere with the forward advancement of the harvester device.
Prior art harvester devices also do not provide a direct visual field of the surrounding tissues and veins being harvested.

Method used

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  • Veno-Merse / Harvester Device
  • Veno-Merse / Harvester Device

Examples

Experimental program
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Effect test

Embodiment Construction

[0019]With reference to the drawings, wherein the same reference number indicates the same element throughout, there is shown in FIGS. 1-3 a veno-merse / harvester device 10 of the present invention comprises a handle portion 20, a hollow shaft portion 30, a cutting portion 40 and a cannula system 50.

[0020]The handle portion 20 is enlarged to allow the device 10 to be firmly gripped by a user. A user can control the forward advancement and rotation of the device 10 by directing or controlling the handle portion 20. Extending from the handle portion 20 is an elongated hollow shaft portion 30 having a generally smaller cross-section than the handle portion 20. At the distal end of the shaft portion 30 is the cutting portion 40. The shaft portion 30 is sealed at the junction 5 where it meets the cutting portion 40. The cutting portion 40 has an outwardly tapered, substantially frusto-conical shape with a circular cutting tip 6 at the distal end of the cutting portion 40 and an opening 11...

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PUM

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Abstract

A veno-merse / harvester device having a handle portion, a hollow shaft portion, and a cutting portion. A fixed cannula system incorporated in the device improves the hydrostatic pressure, which allows efficient hydro-dissection with less retrograde leak of tumescent fluid and facilitates the separation of the vein from surrounding tissues with less bleeding. The veno-merse / harvester device may incorporate a camera system to allow direct visualization of the side branches to be ligated during a procedure. The self-adjustable cutting tip facilitates the forward advancement of the veno-merse / harvester device safely over a dilated portion of a vein.

Description

FIELD OF THE INVENTION[0001]The present invention relates to medical devices and in particular, a device for removal of veins from the body.BACKGROUND OF THE INVENTION[0002]Veins are typically removed from the lower and upper extremities of the body for treating varicose veins, as well as harvesting veins for bypass procedures. Many prior art devices have been used in the past 100 years for removing the varicose veins of the lower extremities. Virtually all of them require major anesthesia at the hospital with potential complications and post-operative pain.[0003]The practice of varicose vein treatment has changed dramatically over the last 10 years, making it an out-patient and less painful procedure, without the need for major anesthesia. The inventor's original harvester device and its subsequent improved version, disclosed in U.S. Pat. Nos. 7,163,547 and 7,632,289 and incorporated herein by reference, are used to remove the varicose veins of the lower extremities under local (tu...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61B1/018A61B17/22A61B1/04
CPCA61B17/00008A61B19/5212A61B17/32053A61B1/05A61B1/00016A61B90/361A61B1/044A61B1/00045A61B1/00087A61B1/0676A61B17/320016A61B17/3203A61B2017/00296A61B2217/007A61F2/062A61M19/00
Inventor MAJLESSI, HESHMAT
Owner MAJLESSI HESHMAT
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