GB2033543A - A valve means for anaesthetic apparatus - Google Patents

A valve means for anaesthetic apparatus Download PDF

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Publication number
GB2033543A
GB2033543A GB7928473A GB7928473A GB2033543A GB 2033543 A GB2033543 A GB 2033543A GB 7928473 A GB7928473 A GB 7928473A GB 7928473 A GB7928473 A GB 7928473A GB 2033543 A GB2033543 A GB 2033543A
Authority
GB
United Kingdom
Prior art keywords
port
valve
connectable
valve means
housing
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Withdrawn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
GB7928473A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manicom A W
Original Assignee
Manicom A W
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
Application filed by Manicom A W filed Critical Manicom A W
Publication of GB2033543A publication Critical patent/GB2033543A/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/04—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members
    • F16K3/06—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages
    • F16K3/08—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages with circular plates rotatable around their centres
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0057—Pumps therefor
    • A61M16/0078—Breathing bags

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Pulmonology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Emergency Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)

Abstract

A valve 10 for anaesthetic apparatus whereby a supply of anaesthetic gases at a port 52 may be connected to the outer lumen of a co-axial tube at outlet 56 and a relief valve at a port 32 to the inner lumen at 58, or vice-versa. The valve further has a port 26, in communication with the outer lumen, to which a reservoir bag may be connected. A valve member 36 rotatable in a housing 12 has through bores 42, 44 and short bores 46, 48 which extend only to a groove 40 aligned with port 32. The housing 12 has ports 18, 20 with which bores 42 and 46 or 44 and 48 respectively may be brought into alignment by selective rotation of the valve member by means of a handle 50. <IMAGE>

Description

SPECIFICATION A valve means for anaesthetic apparatus This invention relates to a valve means for anaesthetic apparatus.
According to the invention there is provided a valve means for anaesthetic apparatus, which includes a first port connectable to a supply of anaesthetic gases; a second port connectable to a relief valve; a third port connectable to the outer lumen of a co-axial tube for delivery and removal of gases to and from a patient; a fourth port connectable to the inner lumen of the co-axial tube; and a switchable connecting means for connecting either the first port with the third port and the second port with the fourth port, or the first port with the fourth port and the second port with the third port.
It will be appreciated by those skilled in the art that by means of the valve means a Mapleson-'D' system may easily and quickly be converted to a Mapleson 'A' system, and vice versa.
The valve means may have a fifth port, in communication with the third port, for a reservoir bag.
The valve means may also have a housing, a displaceable valve member housed therein, and a plurality of port-defining members having passages therein the ends of which define the ports, the valve member having suitable apertures or passages for suitably connecting the passages in the portdefining members.
Any suitable material, which may be a synthetic plastics material, may be used for the valve means and its components.
The invention extends to an anaesthetic apparatus which includes the valve means of the invention.
The invention is now described, by way of an example, with reference to the accompanying drawing which shows an exploded view of a valve in accordance with the invention.
Referring to the drawing, the valve is designated generally by reference numeral 10. The valve 10 has a tubular housing 12 with an end-plate 14 at one end 16. This end-plate has an aperture 18 and an aperture 20. An outer tubular member 22 is secured at one end to the end plate 14 about the aperture 18.
A further inner tubular member 24 is located within the outer tubular member 22 and is also secured at one end to the end-plate 14, but about the aperture 20. The inner tubular member 24 is longer than the outer tubular member 22 so that the free end of the inner tubular member 24 projects from the outer tubular member 22. The free ends of both the inner and outer members 24,22 are ribbed so that inner and outer lumens, respectively, of a co-axial tube (not shown) for delivery and removal of gases from a patient (also not shown) may be connected thereto.
There is also an aperture in the outer member 22, a reservoir bag connector 26 being secured to the outer member 22 thereabout. Thus, the connector 26 is in fli tirl nommllninstion with thp interior of the outer member 22, and a reservoir bag (not shown) may be connected to the free end of the connector 26.
The housing 12 has an arcuate slot 30, the purpose of which will be explained below, and an aperture 32. A short connector 34 is secured to the housing 12 about the aperture 32. The free end of the connector 34 is internally screw-threaded so that a relief valve (not shown) may be secured thereto.
Within the housing 12 is a valve member 36. It will be understood that the housing 12 has a circular cross-sectional profile as does the valve member 36, such that the valve member 36 is pivotal within the housing 12. The interior of the housing 12 and the valve member 36 are so dimensioned that a fluid tight seal is formed between the valve member 36 and the housing 12. A hollow plug 38, which is screw-threadedly engageable within the open end of the housing 12, retains the valve member 26 within the housing 12 and urges it against the inner surface of the end plate 14 to form a fluid tight seal therewith. The valve member 36 has a circumferential groove 40 intermediate its ends, which is in register with the aperture 32 when the valve member 36 abuts the end plate 14.As is seen in the drawing, there are four longitudinal bores 42,44,46 and 48 in the valve member 36. The bores 42 and 44 have a smaller diameter than the bores 46 and 48, and the bores 42 and 44 extend from one end of the valve member 36 to the other, whereas the bores 46 and 48 extend from the end that abuts the end plate 14 only as far as the groove 40. The bores 42,44,46 and 48 are positioned such that when the bore 42 is in register with the aperture 18, the bore 46 is in register with the aperture 20 in the end plate 14; and when the bore 44 is in register with the aperture 20 the bore 48 is in register with the aperture 18. The valve member 36 is displaceable between these positions by means of a handle 50 that is fast therewith and extends through the slot 30.
It will be understood that the mouth of the plug 38 constitutes a first port 52 to which a suitable pipe or tube supplying anaesthetic gases from suitable supplies thereof may be connected; the mouth of the connector 34 constitutes a second port 54 to which the relief valve is connectable; the free end of the outer member 22 constitutes a third port 56 to which the outer lumen of the co-axial tube is connectable; and the free end of the inner member 24 constitutes a fourth port 58 to which the inner lumen is connectable. It will further be understood that when the valve member 36 is in a first position in which the bores 42 and 46 are in register with the aperture 18 and 20 respectively, the first port 52 is in fluid communication with the third port 56 and the second port 54 is in fluid communication with the fourth port 58. This configuration provides a modified Mapleson-'A' system. If the valve member 36 is pivoted so that the bores 44 and 48 are in register with the apertures 20 and 18 respectively, then the first port 52 is connected with the fourth port 58 and the second and third ports 54 and 56 are connected with one another. This configuration provides a modified Mapleson-'D' system.
Thus, in use. the valve 10 is connected to the supply of gases, and the co-axial tube is connected to the patient. The valve member 36 is then pivoted, via the handle 50, to suitably connect the supply and the relief valve to the inner and outer lumens as desired.

Claims (5)

1. A valve means for anaesthetic apparatus, which includes a afirst port connectable to a supply of anaesthetic gases; a second port connectable to a relief valve; a third port connectable to the outer lumen of a co-axial tube for delivery and removal of gases to and from a patient; a fourth port connectable to the inner lumen of the co-axial tube; and a switchable connecting means for connecting either the first port with the third port and the second port with the fourth port; or the first port with the fourth port and the second port with the third port.
2. A valve means as claimed in claim 1,which includes a fifth port, in fluid communication with the third port, connectable to a reservoir bag.
3. A valve means as claimed in claim 1 or 2, which comprises a housing, a displaceable valve member housed therein, and a plurality of port defining members having passages therein the ends of which define the ports, the valve member having suitable apertures or passages for suitably connecting the passages in the port-defining members.
4. Avalve for anaesthetic apparatus, substantially as described herein with reference to the accompanying drawing.
5. An anaesthetic apparatus including a valve means as claimed in any one of claims 1 to 3.
GB7928473A 1978-08-15 1979-08-15 A valve means for anaesthetic apparatus Withdrawn GB2033543A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA00784626A ZA784626B (en) 1978-08-15 1978-08-15 A valve means for anaesthetic apparatus

Publications (1)

Publication Number Publication Date
GB2033543A true GB2033543A (en) 1980-05-21

Family

ID=25573281

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7928473A Withdrawn GB2033543A (en) 1978-08-15 1979-08-15 A valve means for anaesthetic apparatus

Country Status (2)

Country Link
GB (1) GB2033543A (en)
ZA (1) ZA784626B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2160429A (en) * 1984-06-20 1985-12-24 West Terence Benjami Beresford Universal anaesthetic circuit
GB2162070A (en) * 1984-07-23 1986-01-29 Grampian Health Board Anaesthetic systems and valves therefor
EP0577164A1 (en) * 1992-06-02 1994-01-05 TELMA GUZZINI S.r.l. Double-control tap with selector
GB2275199A (en) * 1993-01-29 1994-08-24 Richard Arthur Pickering Under water breathing apparatus
WO2013132086A1 (en) * 2012-03-09 2013-09-12 Intersurgical Ag Connector for respiratory ducts

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2160429A (en) * 1984-06-20 1985-12-24 West Terence Benjami Beresford Universal anaesthetic circuit
GB2162070A (en) * 1984-07-23 1986-01-29 Grampian Health Board Anaesthetic systems and valves therefor
EP0577164A1 (en) * 1992-06-02 1994-01-05 TELMA GUZZINI S.r.l. Double-control tap with selector
GB2275199A (en) * 1993-01-29 1994-08-24 Richard Arthur Pickering Under water breathing apparatus
GB2275199B (en) * 1993-01-29 1997-03-05 Richard Arthur Pickering Underwater breathing apparatus
WO2013132086A1 (en) * 2012-03-09 2013-09-12 Intersurgical Ag Connector for respiratory ducts
US10166359B2 (en) 2012-03-09 2019-01-01 Intersurgical Ag Connector for respiratory ducts

Also Published As

Publication number Publication date
ZA784626B (en) 1979-10-31

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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)