GB2366729A - A device for identification of the epidural space - Google Patents

A device for identification of the epidural space Download PDF

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Publication number
GB2366729A
GB2366729A GB0016399A GB0016399A GB2366729A GB 2366729 A GB2366729 A GB 2366729A GB 0016399 A GB0016399 A GB 0016399A GB 0016399 A GB0016399 A GB 0016399A GB 2366729 A GB2366729 A GB 2366729A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
device
saline
air
diaphragm
epidural
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.)
Granted
Application number
GB0016399A
Other versions
GB2366729B (en )
GB2366729A8 (en )
GB0016399D0 (en )
Inventor
Mann Hasan
Jim Roberts
Original Assignee
Mann Hasan
Jim Roberts
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

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34Trocars; Puncturing needles
    • A61B17/3401Puncturing needles for the peridural or subarachnoid space or the plexus, e.g. for anaesthesia

Abstract

The device visually indicates when an epidural needle enters the epidural space. The device comprises a chamber 5 that may be cylindrical or cubic in shape, an elastic diaphragm 3 which may be made of rubber or synthetic fibre, a connection port 1 to connect an epidural needle and an injection port 2 incorporating a one-way valve through which either air or saline may be injected to pressurise the chamber 5. The pressure develops as the air or saline entering the chamber acts on the diaphragm 3 to make it bulge, the pressure is maintained by the one way valve until the tip of the epidural needle enters the epidural space. The diaphragm then visibly deflates as the air or saline is injected and the pressure is released.

Description

<Desc/Clms Page number 1> DESCRIPTION A DEVICE FOR IDENTIFICATION OF THE EPIDURAL SPACE In the medical practice, identification of the epidural space is required for therapeutic and anaesthetic procedures.

The currently used techniques rely on high level of manual skill and dexterity and require specialist training. These techniques are not uncommonly associated with technical difficulties or complications.

An object of this invention is to provide the operator of this procedure with a device that achieves a high success rate, a steep training/learning curve, and a minimal complications rate.

The invention allows for pressurisation of the epidural needle and automatic injection of air or saline at the point of entry to the epidural space. It provides an instant clear visual aid for identification of this point. It allows for full

<Desc/Clms Page number 2>

concentration and undivided attention of the operator to the advancement of the epidural needle. It also frees her/his hands allowing for a bi-manual grip of the epidural needle wings and a steady control on its movement.

A preferred embodiment of the invention will now be described with reference to the accompanying drawings in which: Figures 1 and 2 show line-draw of side and front views of the device respectively.

The device is connected to the epidural needle via end 1. End 2 is the injection port through which air or saline may be injected to pressurise the cavity. It incorporates a one-way valve which may be made of for example flaps of elastic material such as rubber (2 flaps are shown in figures 1, 2, and 3). The elastic diaphragm 3 is designed to bulge outwardly when the cavity is pressurised by air or saline. It should also flatten when the pressure is lost suddenly providing a visual end point. This diaphragm may be made of thin elastic material such as rubber or other imitative synthetic fibre. The cavity 4, which could have

<Desc/Clms Page number 3>

different shapes such as cylindrical or cubical, may be pressurised by injection of air or saline. The body of the device 5, excluding the diaphragm and the valve, is made of hard material for example plastic. The same components of this invention may be rearranged in an alternative design such as in the side and front line-draw views of figures 3 and 4 respectively.

<Desc/Clms Page number 4>

Claims (4)

  1. CLAIMS 1. A device that connects to the epidural needle has a diaphragm on one side that would bulge when pressurised by injection of air or saline, and retract when the pressure is lost on entering the epidural space.
  2. 2. A device as in claim 1 has an integral one-way valve for the injection of air or saline
  3. 3. A device as in the preceding claims where the body is made of hard material --fo-r-example ##andthe diaphragm is made of elastic material for example rubber
  4. 4. A device as in the preceding claims where it has an injection port for injecting air or saline and a connection port for connecting to the epidural needle
GB0016399A 2000-07-05 2000-07-05 A device for identification of the epidural space Active GB2366729B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0016399A GB2366729B (en) 2000-07-05 2000-07-05 A device for identification of the epidural space

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0016399A GB2366729B (en) 2000-07-05 2000-07-05 A device for identification of the epidural space

Publications (4)

Publication Number Publication Date
GB0016399D0 GB0016399D0 (en) 2000-08-23
GB2366729A true true GB2366729A (en) 2002-03-20
GB2366729B GB2366729B (en) 2004-10-06
GB2366729A8 true GB2366729A8 (en) 2005-02-11

Family

ID=9894992

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0016399A Active GB2366729B (en) 2000-07-05 2000-07-05 A device for identification of the epidural space

Country Status (1)

Country Link
GB (1) GB2366729B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004035104A2 (en) * 2002-10-15 2004-04-29 Mishail Ishak Ibrahim Electronic epidural indicator
US8137312B2 (en) 2003-01-28 2012-03-20 Indigo Orb, Inc. Detection apparatus and method
CN105167824A (en) * 2015-10-14 2015-12-23 无锡市瑞源普斯医疗器械有限公司 Single-use epidural space puncture indicator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090131832A1 (en) * 2007-11-20 2009-05-21 Innovamedica S.A.P.I. De C.V. Electronic Syringe with Safety System for Spinal Injection

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4215699A (en) * 1978-04-03 1980-08-05 The Kendall Company Position indicating device
EP0091846A1 (en) * 1982-04-08 1983-10-19 Société VYGON Device for locating the peridural space
US5188594A (en) * 1991-07-22 1993-02-23 Michael Zilberstein Method of administering medication into epidural space
EP0538259A1 (en) * 1991-02-28 1993-04-28 Industrias Palex, S.A. Method and apparatus for locating anatomical cavities
US5258003A (en) * 1992-06-01 1993-11-02 Conmed Corporation Method and apparatus for induction of pneumoperitoneum
US5902273A (en) * 1997-10-15 1999-05-11 Yang; Ian Y. Pressurizable epidural space identification syringe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4215699A (en) * 1978-04-03 1980-08-05 The Kendall Company Position indicating device
EP0091846A1 (en) * 1982-04-08 1983-10-19 Société VYGON Device for locating the peridural space
EP0538259A1 (en) * 1991-02-28 1993-04-28 Industrias Palex, S.A. Method and apparatus for locating anatomical cavities
US5188594A (en) * 1991-07-22 1993-02-23 Michael Zilberstein Method of administering medication into epidural space
US5258003A (en) * 1992-06-01 1993-11-02 Conmed Corporation Method and apparatus for induction of pneumoperitoneum
US5902273A (en) * 1997-10-15 1999-05-11 Yang; Ian Y. Pressurizable epidural space identification syringe

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004035104A2 (en) * 2002-10-15 2004-04-29 Mishail Ishak Ibrahim Electronic epidural indicator
WO2004035104A3 (en) * 2002-10-15 2004-09-02 Mishail Ishak Ibrahim Electronic epidural indicator
US8137312B2 (en) 2003-01-28 2012-03-20 Indigo Orb, Inc. Detection apparatus and method
US8197443B2 (en) 2003-01-28 2012-06-12 Indigo Orb, Inc. Detection apparatus and method
CN105167824A (en) * 2015-10-14 2015-12-23 无锡市瑞源普斯医疗器械有限公司 Single-use epidural space puncture indicator

Also Published As

Publication number Publication date Type
GB2366729B (en) 2004-10-06 grant
GB2366729A8 (en) 2005-02-11 application
GB0016399D0 (en) 2000-08-23 grant

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