GB2260271A - Vein reflation apparatus - Google Patents

Vein reflation apparatus Download PDF

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Publication number
GB2260271A
GB2260271A GB9206770A GB9206770A GB2260271A GB 2260271 A GB2260271 A GB 2260271A GB 9206770 A GB9206770 A GB 9206770A GB 9206770 A GB9206770 A GB 9206770A GB 2260271 A GB2260271 A GB 2260271A
Authority
GB
United Kingdom
Prior art keywords
vein
re
negative pressure
provided
reflation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB9206770A
Other versions
GB9206770D0 (en
Inventor
Idriss Abdellah Regragui
Original Assignee
Idriss Abdellah Regragui
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to GB919119604A priority Critical patent/GB9119604D0/en
Application filed by Idriss Abdellah Regragui filed Critical Idriss Abdellah Regragui
Priority to GB9206770A priority patent/GB2260271A/en
Publication of GB9206770D0 publication Critical patent/GB9206770D0/en
Publication of GB2260271A publication Critical patent/GB2260271A/en
Withdrawn legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/0095Packages or dispensers for prostheses or other implants

Abstract

The apparatus comprises a container 1 in which the vein 5 is subjected to gradual negative pressure generated via a syringe 8, and gauged by a vacuum indicator 11 so as to be within safe limits. A fluid reservoir 6 is provided for filling the re-flating vein so as to disclose any leakage. The lid 2 is air-tight but easily removable to enable taking out of the vein for leak repair. <IMAGE>

Description

VEIN RE-FLATOR The invention is for vein re-ftation in preparation for by-pass grafting Autologous vein grafts, the best by-pass conduit so far available for coronary, vascular and neurosurgery has got a patency rate that is related to the degree of damage to the grafts native intima.

In addition to the trauma during harvesting, the manual hydrostatic prassure conventionally needed to distend the vein is the major cause of endothelial damage as it often generates pressures that in clinical situations reach over 300mmHg, experimental studies have shown that pressures more than 200mmHg produce - endothelial disruption with increased thrombogenicity.

- lowered endothelial fibrinolytic activity.

According to this invention there is provided a vein re-ftator comprising achamber 1 and means to subject a carefully harvested vein to gradual negative pressure, enough to overcome the spasm yet preventing exposure of the intima to the damaging effect of the hydrostatic pressure customarily used to distend these veins.

An embodiment of the invention will be described with reference to the accompanying drawings in which Figure 1 shows in perspective one form of the re-fZator Figure 2 shows the circular version.

Figure 3 shows a cross-section of circular version.

Referring to the drawing the vein re-fTator comprises a chamber 1 in the form of transparent plastic tube that could be adjusted in Zengh to suit that of the vein to be re-flated.

A lid 2 which will be air tight once fitted in place and will have a central aperture 3 that on the inner side will be adapted to a vessel cannula 4 onto which will be tied the vein to be re-fLated 5.

The outer side of the aperture will be a female connector to which will be fitted a reservoir 6 with marked volume levels, it will contain the fluid that will fill up the vein as it expands, revealing leaks in the vein; and given the length of the vein, the average internal diameter may be mathematically deducted from the estimated volume accomodated in the vein.

The distant end of the chamber will be sealed with another lid 7 with an outlet. To the outlet a syringe 8 is connected with interposed three-way stopcock 9, with which to generate enough negative pressure to expand the vein back to its original dimentions.

It will be adapted with a vacuum indicator 11, in the form of a beZZows,gauged at a preset safe pressure level to monitor the level of negative pressure to which the vein is subjected to as generated by syringe 8.

The distil end of the vein to be clamped with a bulldog 10 which will work as a weight to ease the vein into the chamber.

The needs to be of a loose fit or a less than one turn screwabte assembly so as to be removed easily with the vein for any leaking points to be repaired outside the chamber and vein put back in.

When the whole saphenous vein is to be used the chamber could take the shape of a flat circular container with an air-tight lid where the vein may take a spiral lie.

Optional - It could have an extra port 12 for the distil end of the vein if it is to be connected to the atmospheric pressure. Thus averting the theoretical danger of intraluminal buiZd-up of pressure, due to valves, at the distal end of the vein.

Claims (5)

1 A vein re-fTator consisting of a body in the form of a container wherein the vein will be subjected to gradual negative pressure to expand it.
2 Vein re-fTator is claimed in Claim 1 wherein it is provided with a reservoir, open to the atmosphere, where is contained the fluid to fill the re-expanding vein and reveal any leaking points.
3 As claimed in 1 and 2 wherein means are provided to generate adequate safe negative pressure to re-expand the vein.
4 Vein re-fLator as claimed in above Claims where it is provided with means to monitor the level of negative pressure for it to remain within safe limits.
5 A vein re-fZator substantially as described herein.
GB9206770A 1991-10-13 1992-03-27 Vein reflation apparatus Withdrawn GB2260271A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB919119604A GB9119604D0 (en) 1991-10-13 1991-10-13 The vein re-flator
GB9206770A GB2260271A (en) 1991-10-13 1992-03-27 Vein reflation apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9206770A GB2260271A (en) 1991-10-13 1992-03-27 Vein reflation apparatus

Publications (2)

Publication Number Publication Date
GB9206770D0 GB9206770D0 (en) 1992-05-13
GB2260271A true GB2260271A (en) 1993-04-14

Family

ID=26299535

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9206770A Withdrawn GB2260271A (en) 1991-10-13 1992-03-27 Vein reflation apparatus

Country Status (1)

Country Link
GB (1) GB2260271A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004110145A1 (en) * 2003-06-13 2004-12-23 Biotest Ag Method and apparatus for preserving the endothelium in isolated hollow organs and biological vessels
DE102004041067A1 (en) * 2004-08-19 2006-02-23 Aesculap Ag & Co. Kg Method for applying a casing on a natural vessel section by means of a tubular auxiliary instrument
WO2007024193A3 (en) * 2005-08-25 2007-04-19 Mikael Charlez Vascular resistance gauge

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4908013A (en) * 1987-03-03 1990-03-13 Sulzer Brothers Limited Holder for a vein segment and method of removing cells from a vein segment

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4908013A (en) * 1987-03-03 1990-03-13 Sulzer Brothers Limited Holder for a vein segment and method of removing cells from a vein segment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004110145A1 (en) * 2003-06-13 2004-12-23 Biotest Ag Method and apparatus for preserving the endothelium in isolated hollow organs and biological vessels
DE102004041067A1 (en) * 2004-08-19 2006-02-23 Aesculap Ag & Co. Kg Method for applying a casing on a natural vessel section by means of a tubular auxiliary instrument
WO2007024193A3 (en) * 2005-08-25 2007-04-19 Mikael Charlez Vascular resistance gauge

Also Published As

Publication number Publication date
GB9206770D0 (en) 1992-05-13

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)