WO1995031240A1 - Ensemble valve a ressort d'apport de liquide - Google Patents

Ensemble valve a ressort d'apport de liquide Download PDF

Info

Publication number
WO1995031240A1
WO1995031240A1 PCT/US1995/002570 US9502570W WO9531240A1 WO 1995031240 A1 WO1995031240 A1 WO 1995031240A1 US 9502570 W US9502570 W US 9502570W WO 9531240 A1 WO9531240 A1 WO 9531240A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve member
valve
liquid
housing
control mechanism
Prior art date
Application number
PCT/US1995/002570
Other languages
English (en)
Inventor
Rick D. Lorenzen
Chet M. Crump
Rene M. Roderer
Original Assignee
Ballard Medical Products
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 Ballard Medical Products filed Critical Ballard Medical Products
Priority to AU20924/95A priority Critical patent/AU2092495A/en
Publication of WO1995031240A1 publication Critical patent/WO1995031240A1/fr

Links

Classifications

    • 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
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A61M39/26—Valves closing automatically on disconnecting the line and opening on reconnection thereof
    • 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
    • A61M16/04—Tracheal tubes
    • A61M16/0463—Tracheal tubes combined with suction tubes, catheters or the like; Outside connections
    • 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
    • A61M3/00—Medical syringes, e.g. enemata; Irrigators
    • A61M3/02—Enemata; Irrigators

Definitions

  • the inventions disclosed herein relate generally to apparatus and methods for improved medical care for intubated patients, and more particularly to novel devices and related methods, for selective delivery of liquid to the respiratory tract of intubated medical patients, including infants, adolescents, and adults.
  • the present invention substantially alleviates the aforesaid problems of the prior art and comprises apparatus and methods by which a closed ventilating system accommodates access to the respiratory system of an intubated medical patient for various purposes, including selective introduction of therapeutic liquids, without compromising the closed character of the system.
  • Access to the respiratory system through one or more access sites of the closed system apparatus is provided to ventilate the lungs of the patient with gas or gases, to aspirate secretions from the lungs, to oxygenate the lungs to eliminate or reduce residual CO 2 therefrom, to visually inspect selected parts of the respiratory system, to sample sputum and gases, to sense parameters such as flow rates, pressure, and temperature, to flush with washing solution, and/or to administer medication, gases, and/or lavage.
  • the technology of the present invention has substantial universal application to all respiratory patients, ranging from infants to the aged.
  • the system comprises apparatus and methods by which liquids are selectively introduced through a ventilating device into the respiratory system of a medical patient to flush, medicate, irrigate, or the like.
  • Use is facile and requires little training. Control is easily achieved. Risks that the closed system will become materially open to external contaminates is low. Leakage under pressure and clogging are obviated. Repeated doses or discharge cycles of liquid are readily accommodated by a novel two-way valving technique.
  • An additional paramount object is the provision of novel apparatus and related methods by which a closed ventilating system accommodates multiple access including access for introduction of liquid into the respiratory system of an intubated medical patient without substantially compromising the closed character of the system.
  • An additional object of the present invention is the provision of access through one or more access sites in a closed system respiratory apparatus in such a way as to medicate, irrigate, and/or flush the lungs of the patient, among other things.
  • a further important object of the present invention is to provide features in a respiratory health care system which accommodate selective introduction of liquid through a ventilating device into the respiratory system of a patient to flush, medicate, irrigate, or the like.
  • Another valuable object is the provision of a novel flow control for introduction of liquid through a closed ventilating system into the respiratory system of a medical patient which has one or more of the following advantages: easily controlled, substantially retains the closed nature of the system, is essentially leak proof, does not clog, and accommodates a plurality of pressure discharges of liquid in rapid succession by a novel two-way flow technique. It is a further object of major significance to provide for selective introduction of liquid into the respiratory tract of a medical patient in such a way as to reasonably protect the health care provider.
  • Figure 1 is a perspective representation of a mechanism for introduction of liquid into the respiratory system of a medical patient, embodying principles of the present invention
  • Figure 2 is an exploded perspective of the mechanism of Figure
  • Figure 3 is a longitudinal cross-section of the various components of the mechanism of Figure 3 shown in exploded relationship;
  • Figure 4 is a cross-sectional representation primarily of the piston valve and valve seat in closed relationship with a container of liquid about to be inserted into the valve seat displace the piston valve;
  • Figure 5 is a cross-sectional representation similar to Figure 4 showing the male end of the liquid container inserted into the valve seat causing the piston valve to be displaced into an open position, with the liquid container forcibly dispensing liquid;
  • Figure 6 is a cross-sectional representation similar to Figure 5 showing the piston valve in its open relation, caused by the male discharge end of the liquid container with air flowing around the valve into the container to reinflate the container after liquid discharge;
  • Figure 7 is a cross-section taken along lines 7-7 of Figure 3;
  • Figure 8 is a cross-section of a second valve member embodying principles of the present invention.
  • Figure 9 is an elevation, with a portion shown in section for clarity, of still another valve member integrally joined to a flat accordion-type spring;
  • Figure 10 is an elevation, with a portion shown in section for clarity, of a further valve member integrally joined to a flat accordion-type spring;
  • Figure 11 is an elevational view taken along lines 11-11 of Figure 10; and Figure 12 is a fragmentary elevation with a portion broken away for clarity of a modification of the valving member of Figures 10 and 11.
  • the illustrated embodiment is intended to be representative of inventive principles by which liquid may be selectively and appropriately introduced into the respiratory system of a medical patient through any one of several flow-accommodating devices.
  • the purpose of the liquid is not limited to but may include irrigation, flushing, and medication.
  • the particular location of the illustrated mechanism for selective introduction of liquid into the respiratory system of a medical patient is not restricted and includes displacement through tubes, catheters, various flow devices, and the like.
  • the present mechanism may be used at one access port while other therapeutic devices access are being used at other sites. It follows that the described embodiments are only illustrative or representative of principles of the present invention.
  • the Figures illustrate a closed system-preserving mechanism, generally designated 10, by which liquid may be selectively introduced through a respiratory treatment device, generally designated 12, into the respiratory system of a medical patient.
  • the liquid introduction mechanism or apparatus 10 comprises a valve seat housing, generally designated 14, a two-way piston valve member, generally designated 16, a hollow barrel, generally designated 18, in which the piston valve member 16 selectively reciprocates and in which a coiled compression spring, generally designated 20, is disposed, a length of hollow tubing, generally designated 22, and a hollow elbow fitting, generally designated 24. While the liquid introducing mechanism 10 is illustrated as comprising a specific number of components, it is to be appreciated that components can be combined and separated, as will be readily apparent to those with skill in the art.
  • valve seat housing 14 is preferably formed from a suitable material such as a medical grade synthetic resinous material or an elastomer such as synthetic rubber.
  • Valve seat housing 14 comprises an exterior cylindrical wall 26, illustrated as having a uniform thickness and a uniform outside diameter, at surface 28, and inside diameter, at surface 30.
  • the distal end of the wall 26 terminates in a transversely-directed blunt edge 32 defining a distal opening 34 (Figure 3), the diameter of which is equal to the diameter of surface 30, of which opening 34 forms a part.
  • Opening 34 accommodates receipt of both the proximal end of barrel 18 and piston valve member 16, as described hereinafter in greater detail.
  • the proximal end 36 of wall 26 merges through 90° with an inwardly-directed transverse or radial-directed flange 38, which comprises the blunt proximal end of the housing 14.
  • Flange 38 is annular and comprises exterior surface 40 and interior surface 42.
  • the annular flange 38 merges at corner 44 with a longitudinally-directed annular wall 46.
  • interior wall 46 When not displaced, interior wall 46 is generally concentrically disposed within wall 26 and comprises an exterior cylindrical surface 48.
  • Wall 46 also comprises an interior cylindrical surface 50, defining a proximal access port 52 and extending from proximal corner 44 to corner 54.
  • the length of wall surface 50 is substantially shorter than the length of wall surface 48.
  • the length of wall surface 48 is substantially less than the length of wall surface 28.
  • Cylindrical interior wall surface 50 merges with a forwardly divergent diagonal wall surface 56, which is illustrated as being that of a truncated cone, extending between corner 54 and corner 58.
  • diagonal surface 56 comprises a step or reduction in the thickness of wall 46 to a thinner although tapered distal lip 60. Lip 60 is relatively thin being tapered distally to a distal point 62.
  • wall 46 While all parts of wall 46 are formed as one-piece, as is all of housing 14, the lip 60 is yieldable or pliant and conforming and defines at its tapered interior surface 64 a valve seat, for a purpose hereinafter explained in greater detail. As can be seen from observation of Figure 3, wall 46 has a longitudinal or axially dimension substantially less than the longitudinal or axial dimension of annular wall 26 to accommodate placement and seating of the piston valve member 16 during use.
  • Tether 70 Formed as one piece with wall 26 is an integral tether 70.
  • Tether 70 is illustrated as being rectangular and solid in cross-section, although other configurations could be used.
  • Tether 70 merges in one piece relationship with both wall 26 and a cap, generally designated 72.
  • Cap 72 comprises a cylindrical wall 74 of uniform thickness comprised of uniform inside and outside diameters. The inside diameter is slightly less than the outside diameter of housing 14, at surface 28.
  • the axially dimension of wall 74 is substantially less than the axially or longitudinal dimension of wall 26.
  • the cylindrical wall 74 merges with a radially-directed planar end wall 76, which may be of uniform thickness.
  • Wall 76 is formed as one piece with wall 74 to collectively define a cup-shaped hollow interior.
  • Wall 76 at its interior surface is interrupted by a cylindrical stud 78 which comprises a blunt end wall 81 as well as a cylindrical wall surface 87.
  • the diameter of wall 87 is preferably selected so as to be slightly less than the diameter of opening 52 of held in position by a manually-releasible compression fit between the knob 78 at surface 82 and housing 14 so that when cap 76 is placed over the proximal end of housing 14, cylinder 78 fits loosely within opening 52 and spaced from surface 50.
  • Tab 89 is provided to remove cap 72 from its press-fit relationship over the proximal end of the valve seat housing 14.
  • Tab 89 is illustrated as being formed as one piece with wall 74, as having a cross-section substantially the same as the cross-section of tether 70 (although other configurations could be used), and extending a distance sufficiently away from cap 72 to allow manual grasping of the tab 89 for removal of the cap 72 from placement over the proximal end of the housing 14.
  • piston valve member 16 is preferably formed as one piece from suitable synthetic resinous material, such as nylon or celcon, which is shape-retaining and rigid in its configuration.
  • Piston valve member 16 accommodates two-way fluid flow, as explained hereinafter in greater detail, and comprises a bullet-shaped configuration with a hollow interior.
  • piston valve member 16 comprises a wall 80, which comprises an outside surface 82 and a cylindrical inside surface 84.
  • outside surface 82 comprises in series four flat top, bottom, and side surfaces 83.
  • the inside surface 84 defines part of a hollow blind bore interior which comprises an opening 86.
  • Wall 80 comprises a blunt, transversely or radially-directed distal edge 88 and merges at a diagonal corner 90 with a truncated cone-shaped wall 92.
  • Cone-shaped wall 92 comprises smooth tapered interior and exterior surfaces 94 and 96, respectively. Inside surfaces 94 and 96 are interrupted by an inwardly projecting annular shoulder or ledge 98 against which the proximal end 100 of coiled spring 20 forcibly rests in the assembled position. See Figures 4-6.
  • Cone-shaped wall 92 merges with a proximal closure wall 102.
  • Wall 102 comprises an interior flat radially-directed flat surface 104 and an exterior contoured surface 106.
  • exposed contoured surface 106 is somewhat diamond-shaped and comprises two grooves 108, which cross each other at 90°. Other groove or recess configurations could be used.
  • contoured surface 106 at the proximal end or tip of the piston valve member 16 accommodates contiguous engagement by a male discharge end 110 of a liquid storage container, generally designated 112 ( Figures 4-6), displacement of liquid under pressure from container 112 through the hollow of male projection 110, along grooves 108, the exterior conical surface 96, and thence primarily across flats 83 to the hollow interior of the barrel 18.
  • opposite flow of ventilating gas present in the hollow of barrel 18 is accommodated, primarily from the hollow of barrel 18 along the flats 83 of piston valve member 16, across cylindrical surface 96, along grooves 108 into the hollow of the male projection 110 and thence into the hollow of the container 112 to reinflate or recharge the container thereby accommodating a second discharge of liquid therefrom, in the manner described.
  • Manual projection 110 at the side thereof, snugly engages and seals at surface 50 to prevent fluid leakage and to protect the health care provider.
  • container 112 is intended to be representative of any device from which is manually pressurized and from which liquid is selectively discharged.
  • Spring 20 is sized and shaped so that proximal end 100 contiguously engages shelf, ledge, or shoulder 98, in the assembled condition. This urges the piston valve member 16 toward its closed position of Figure 4, so that valve seat 60 is deflected by and seals against surface 96 absent force imposed by the male projection 110.
  • the distal end 114 of the coiled spring 20 forcibly rests upon internal surface 116 of barrel 18, in the assembled condition. See Figure 3.
  • the piston valve member 16 is supported in cantilevered relation upon the proximal portion of the spring 20, but is otherwise unattached to the assembly 10.
  • piston valve member 16 is reciprocable to and fro within the hollow interior of the barrel 18, in response to the balance of forces being exerted by compressed spring 20, on one end, and the male end 110 of the liquid container 112, if any, on the other end.
  • spring 20 has an unstressed length, as illustrated in Figure 3, greater than the distance between shelf or shoulder 98 and surface 116, when apparatus 10 is fully assembled. Therefore, in the assembled condition, spring 20 is partially compressed and, therefore, urges the piston valve member 16 into sealed relation at conical surface 96 with deflectable lip/ valve seat 60, as illustrated in Figure 4.
  • Barrel 18 comprises a generally annular wall 118 comprised of a cylindrical interior surface 120 of uniform diameter throughout thereby creating a proximal opening 122 adjacent blunt transverse end 124 comprising part of a hollow interior.
  • Wall 118 comprises first and second cylindrical exterior surfaces 126 and 128. The length of surface 126 is illustrated as being slightly less than the length of surface 128.
  • Surfaces 126 and 128 are interrupted or separated by an annular barb, shoulder, ledge, or shelf 130, which extends annularly and comprises a radially-directed surface 132 juxtaposed surface
  • the diameter of interior cylindrical surface 120 is less than the maximum transverse dimension of wall 80 at exterior surface 83 and 85, so that normal concentric reciprocation of piston valve member 16 within the hollow interior of the barrel 18 is accommodated in spaced relation.
  • the distal end of the barrel 18 is convergingly tapered in a distal direction at non-linear surface 140, which is annularly concave in its configuration and extends between outside corner 142 and distal blunt edge 144.
  • Concave surface 140 comprises part of wall 146.
  • Wall 146 is formed as one piece with the rest of barrel 18 including a plurality of radially-directed internal spring-locating ribs 148, disposed within the hollow interior of wall 118. Ribs 148 merge with an inwardly-directed radially disposed annular apertured wall 150. While six ribs 148 are illustrated, any appropriate number may be used.
  • the aperture 152 disposed in wall 150 is concentrically located and has a diameter substantially equal to the inside diameter of tube 22.
  • Wall 150 also comprises previously mentioned proximal wall surface 116 upon which end 114 of spring 20 forcibly abuts in the assembled condition. Radially disposed wall 150 merges as one piece with wall 146, the interior surface 154 of which is cylindrical and comprises a diameter substantially the same as the outside diameter of tube 22.
  • proximal end 156 of tube 22 is fully inserted into the recess defined by surface 154 and wall 150 until the proximal edge 158 of the tube
  • Tube 22 is contiguous or nearly so with the distal surface of wall 120. With a suitable bonding agent or adhesive or using plastic welding techniques, the proximal end 156 of the tube 22 is permanently adhered into the described assembled position against inadvertent removal. Tube 22 also comprises a distal end 162 termination in a blunt transversely-directed edge 164 of annular configuration.
  • the barrel 18 is formed of a shape-retaining synthetic resinous material or elastomer which is compatible with material from which valve seat housing 14 is formed, each being of medical grade.
  • tube 22 is formed of a suitable medical grade synthetic resinous material which is deflectable but tends to retain its shape so that the hollow interior 160 thereof is not inadvertently occluded.
  • Elbow fitting 24 is formed of shape-retaining medical grade synthetic resinous or elastomeric material and comprises an integral body defined by a hollow proximal leg 166 and a hollow distal leg 168, the legs being illustrated as being disposed at 90° one in respect to the other. Other fitting configurations could be used in accordance with the ability of those having ordinary skill.
  • Proximal leg 166 comprises a blunt end 170 and a tapered exterior surface 172.
  • Proximal leg 166 comprises a hollow cylindrical passageway 174 defined by surface 176 illustrated as having a uniform diameter throughout. Passageway 174 terminates at distal edge 178.
  • Distal end 162 is sized so as to be contiguous with surface 176 when inserted into the passageway 174.
  • edge 164 is caused to engage shoulder 177 during insertion.
  • the distal end 162 is permanently retained in the inserted position against inadvertent removal.
  • Proximal leg 166 merges at corner 180 with distal leg 168.
  • Distal leg 168 comprises a blunt distal edge 182 and is illustrated as further comprising an exterior cylindrical surface 184.
  • Leg 168 is essentially an annular wall defining a cylindrical distal passageway 186 defined by interior cylindrical surface 188.
  • Distal end 162 is sized so as to contiguously be inserted into the passageway 174 until edge 164 engages shoulder 177. Using plastic welding, bonding material or adhesive, the distal end 162 is retained in the inserted position against inadvertent removal.
  • One advantage of the present invention is the capability of simultaneously ventilating and administering liquid to the respiratory tract of a medical patient, consistent with the contents of co-pending U.S. Patent Application Serial No. 08/245,333 filed May 18, 1994, which is incorporated herein by reference.
  • Valve member 200 is generally spherically shaped and comprises a spherical wall 202, which is interrupted by a distally-directed stepped blind bore 204.
  • Wall 202 comprises a spherical exterior surface 206 and a spherical interior surface 208.
  • Outside surface 206 comprises at least one and preferably more than one fluid flow- accommodating groove 210, which serves the same purpose as that heretofore described in respect to grooves 108.
  • the exterior proximal apex of surface 206 comprises at least two intersecting grooves 210.
  • Spherical wall 202 is preferably formed of a synthetic resinous material which is shape-retaining and rigid, such as nylon or celcon.
  • Wall 208 defines and forms a concave spherical blind bore 212.
  • Wall 208 is stepped at shoulder 214 into diametrally enlarged cylindrical wall segment
  • spring end 100 is such that it is compression-fit against blind bore wall segment 216 so that the valve member 200 and the spring 20 are releasibly secured together against inadvertent separation. So positioned, end 100 rests in load-transferring relationship against shoulder 214 whereby valve element 200 is urged at all times toward a closed position in respect to the associated valve seat.
  • the blind bore 204 is further enlarged or stepped at shoulder 218.
  • Shoulder 218 merges with cylindrical wall segment 220 of the blind bore 204.
  • the diameter of cylindrical wall segment 220 is larger than the maximum transverse dimension of spring 20 for ease of insertion of the spring 20.
  • FIG. 9 illustrates a further embodiment of the present invention comprised of an integral valving or self- biasing spring member, generally designated 230.
  • the biasing portion generally designated 232, is comprised of a one-piece length of zig-zag synthetic resinous material where individual adjacent legs 234 thereof are interconnected respectively at living hinges 236.
  • the plastic accordion-type spring 236 is disposed essentially in a plane and is, therefore, not coiled.
  • the illustrated plastic spring 232 comprises an appropriately sized base 238 for engagement with surface 116 of barrel 18 in the assembled condition, to compress, as explained above, the spring 232 and to thereby urge the associated valving element 240 into the closed position against valve seat lip 60.
  • proximal end 242 of the spring 232 is embedded within the distal region of the valving element 240, when the valving element 240 is initially molded so that valving element 240 and spring 232 are essentially permanently united against inadvertent separation. The resulting member is self-biasing.
  • Proximal end 242 connects to the remainder of the spring by short leg 239 and comprises an integral transversely-disposed washer 244, formed as one piece with spring 232. Washer 244 prevents fore and aft displacement of spring end 242 in respect to the valving element 240.
  • Valving element 240 as illustrated, comprises a solid body of suitable synthetic resinous material which is shape-retaining and generally rigid. Nylon and celcon are suitable.
  • Valving element 240 comprises a solid base 246, which comprises a cylindrical side surface 248 and a transversely- directed distal face 250 which is flat.
  • Base 246 merges at corner 252 with a solid frusto conically-shaped proximal segment 254.
  • Conical segment 254 comprises a truncated conically-shaped exterior surface 256, which, when the valve member 240 is normally closed, contiguously and sealingly engages valve seat lip 60 in seated relation, as explained above.
  • Frusto-conically- shaped segment 254 merges at corner 258 with proximal tip 260, which is solid.
  • Tip 260 comprises a side surface 262 which is generally cylindrical.
  • Proximal tip 260 also comprises a contoured front surface 264 in which at least one and preferably two or more angularly disposed grooves 266 are disposed.
  • the groove or grooves 266 function in the manner heretofore described in respect to grooves 108.
  • Self -biasing member 270 comprises the previously described planar spring element 232 and a valving portion, generally designated 272.
  • the proximal end 242, with integral washer 244, is embedded in the valve member 272 at the distal end thereof in a manner substantially the same as described above in conjunction with valving member 240, the union occurring at the time valving element 272 is molded.
  • Valving element 272 comprises a proximal solid piece of synthetic resinous material which is shape-retaining and rigid, such as nylon or celcon.
  • Valving element 272 comprises a proximal hemisphere 274 which comprises an external spherical surface 276.
  • Surface 276 is interrupted by at least one and preferably more than one groove 278 disposed at the proximal apex of the hemisphere 274. Where more than one groove 278 is used, it is preferred that the grooves be angularly intersecting.
  • the one or more grooves 278 function for the purpose and in the same manner as heretofore described in connection with grooves 108.
  • Hemisphere 274 comprises two spaced transversely-directed flat surfaces 280 and 282. Surfaces 280 and 282 are interrupted by a distally-directed flange
  • Flange 280 which extends, as illustrated, in a vertical plane.
  • Flange 280 is formed as one piece with hemisphere 274 at the time of molding.
  • Flange 284 comprises a distal edge 280, which is generally circular or cylindrical.
  • Flange 284 is centrally enlarged at boss 288, with spring end 242 extending into and being anchored within boss 288.
  • Self-biasing valving member 270 is placed within a valve the type heretofore described so that spring 234 continuously urges valving element 272 into a closed position against valve seat lip 60, when no other force is exerted on valving element 272. Yet spring 232 accommodates displacement of valving member 272 by the male discharge portion 112 of liquid container
  • Figure 12 illustrates a one piece valving/self-biasing member, generally designated 270 ' .
  • Valving/self-biasing member 270 ' is in all respects the same as member 270, except as explained below.
  • Valving/self- biasing member 270 ' comprises a valving element 272 ' , which is substantially identical in structure and function to valving element 272, and biasing element 232 ' , which is substantially identical in structure and function to biasing element 232.
  • Valving/self-biasing member 270' differs from member 270 in that elements 272 ' and 232 ' are formed as one piece rather than separately from a suitable synthetic resinous material, through well known injection molding techniques.

Landscapes

  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

L'invention se rapporte à un appareil et à des procédés au moyen desquels un système de ventilation fermé permet d'accéder aux voies respiratoires d'un patient intubé en vue d'introduire de manière sélective des liquides thérapeutiques, de rincer avec une solution de lavage et/ou d'administrer un médicament et/ou un lavage, sans remettre en question le caractère fermé du système. L'appareil comprend un mécanisme de valve normalement fermé comportant un siège de valve (40, 60), un élément de valve (16) et un ressort de sollicitation (20). L'élément de valve s'ouvre sous l'effect d'une force physique exercée par un récipient (112) par lequel est introduit le liquide. Un écoulement de fluide bidirectionnel s'effectue dans l'élément de valve.
PCT/US1995/002570 1994-05-18 1995-03-06 Ensemble valve a ressort d'apport de liquide WO1995031240A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU20924/95A AU2092495A (en) 1994-05-18 1995-03-06 Biassed liquid delivery valve arrangement

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US24533394A 1994-05-18 1994-05-18
US08/245,333 1994-05-18
US33223394A 1994-10-31 1994-10-31
US08/332,233 1994-10-31

Publications (1)

Publication Number Publication Date
WO1995031240A1 true WO1995031240A1 (fr) 1995-11-23

Family

ID=26937161

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/002570 WO1995031240A1 (fr) 1994-05-18 1995-03-06 Ensemble valve a ressort d'apport de liquide

Country Status (2)

Country Link
AU (1) AU2092495A (fr)
WO (1) WO1995031240A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004045720A1 (fr) * 2002-11-15 2004-06-03 Medi-Stream Pty Ltd Dispositif et procede d'administration de medicaments
US6811142B2 (en) 2000-04-06 2004-11-02 Unomedical A/S Valve device
US7721738B2 (en) 2000-04-06 2010-05-25 Unomedical A/S Coupling arrangement
US8215306B2 (en) 2008-12-12 2012-07-10 Kimberly-Clark Worldwide, Inc. Respiratory access port assembly with push button lock and method of use
US8256422B2 (en) 2009-05-15 2012-09-04 Kimberly-Clark Worldwide, Inc Respiratory access port assembly with passive lock and method of use
US9078987B2 (en) 2011-12-23 2015-07-14 Avent, Inc. Clutch brake assembly for a respiratory access port
US20150335842A1 (en) * 2009-07-31 2015-11-26 Avent, Inc. Subglottic suctioning system

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US375221A (en) * 1887-12-20 Mickexs
GB189513630A (en) * 1895-07-16 1895-09-07 Nathaniel Sweet Cary Improvements in Faucets.
CH68559A (de) * 1914-04-30 1915-06-01 Giulio Alliata Sicherung für Gasschlauchanschlüsse
US1534913A (en) * 1923-11-10 1925-04-21 Eugene C Buck Serum extractor
US2327611A (en) * 1941-09-30 1943-08-24 Albert T Schelwer Coupling
FR1053358A (fr) * 1952-04-03 1954-02-02 Otom Robinet
US3035617A (en) * 1957-01-09 1962-05-22 American Nat Bank And Trust Co Fuel transfer adapter with dual valve actuator
US3486730A (en) * 1966-08-18 1969-12-30 Us Army Quick disconnect coupling and valve combination
US3731717A (en) * 1969-03-04 1973-05-08 Us Army Canteen for use with a gas mask
US4429856A (en) * 1981-12-18 1984-02-07 Mallinckrodt, Inc. Inflation valve
US5046645A (en) * 1988-02-19 1991-09-10 Mckesson Corporation Syphon package with mechanically attached valve
US5181508A (en) * 1989-01-26 1993-01-26 Poole Jr Samuel E Molded connector

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US375221A (en) * 1887-12-20 Mickexs
GB189513630A (en) * 1895-07-16 1895-09-07 Nathaniel Sweet Cary Improvements in Faucets.
CH68559A (de) * 1914-04-30 1915-06-01 Giulio Alliata Sicherung für Gasschlauchanschlüsse
US1534913A (en) * 1923-11-10 1925-04-21 Eugene C Buck Serum extractor
US2327611A (en) * 1941-09-30 1943-08-24 Albert T Schelwer Coupling
FR1053358A (fr) * 1952-04-03 1954-02-02 Otom Robinet
US3035617A (en) * 1957-01-09 1962-05-22 American Nat Bank And Trust Co Fuel transfer adapter with dual valve actuator
US3486730A (en) * 1966-08-18 1969-12-30 Us Army Quick disconnect coupling and valve combination
US3731717A (en) * 1969-03-04 1973-05-08 Us Army Canteen for use with a gas mask
US4429856A (en) * 1981-12-18 1984-02-07 Mallinckrodt, Inc. Inflation valve
US5046645A (en) * 1988-02-19 1991-09-10 Mckesson Corporation Syphon package with mechanically attached valve
US5181508A (en) * 1989-01-26 1993-01-26 Poole Jr Samuel E Molded connector

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6811142B2 (en) 2000-04-06 2004-11-02 Unomedical A/S Valve device
US7721738B2 (en) 2000-04-06 2010-05-25 Unomedical A/S Coupling arrangement
WO2004045720A1 (fr) * 2002-11-15 2004-06-03 Medi-Stream Pty Ltd Dispositif et procede d'administration de medicaments
US7677244B2 (en) 2002-11-15 2010-03-16 Medi-Stream Pty Ltd Drug delivery device and method
US8215306B2 (en) 2008-12-12 2012-07-10 Kimberly-Clark Worldwide, Inc. Respiratory access port assembly with push button lock and method of use
US8845617B2 (en) 2008-12-12 2014-09-30 Kimberly-Clark Worldwide, Inc. Respiratory access port assembly with push button lock and method of use
US8256422B2 (en) 2009-05-15 2012-09-04 Kimberly-Clark Worldwide, Inc Respiratory access port assembly with passive lock and method of use
US20150335842A1 (en) * 2009-07-31 2015-11-26 Avent, Inc. Subglottic suctioning system
US10245401B2 (en) * 2009-07-31 2019-04-02 Avent, Inc. Subglottic suctioning system
US9078987B2 (en) 2011-12-23 2015-07-14 Avent, Inc. Clutch brake assembly for a respiratory access port

Also Published As

Publication number Publication date
AU2092495A (en) 1995-12-05

Similar Documents

Publication Publication Date Title
US11944782B2 (en) Priming apparatus and method
US6494203B1 (en) Medical aspirating/ventilating closed system improvements and methods
US5025806A (en) Medical ventilating and a spirating apparatus and methods
US4429856A (en) Inflation valve
US6012451A (en) Medical aspirating/ventilating closed system improvements and methods
US6585229B2 (en) Medical nozzle securing apparatus
US8002765B2 (en) Medical valve with fluid escape space
US5730123A (en) Medical multiple access low dead space anti-microbial aspirating/ventilating closed system improvements and methods
US5176658A (en) Valve assembly for use in medical devices
US4569344A (en) Aspirating/ventilating apparatus and method
EA000384B1 (ru) Медицинский клапан с шинным уплотнением
US20040195538A1 (en) Injection port valve
US20110083665A1 (en) Vial multi-access adapter
WO1995031240A1 (fr) Ensemble valve a ressort d'apport de liquide
JPH10192415A (ja) ニードルレス側注管
JPH08168465A (ja) トロッカ−
JP3120922B2 (ja) 薬液注入器具
WO1995031249A1 (fr) Adaptateurs, joints pour systeme d'aspiration/ventilation, et leurs procedes d'utilisation
AU2483101A (en) Medical valve with tire seal

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AM AT AU BB BG BR BY CA CH CN CZ DE DK EE ES FI GB GE HU JP KE KG KP KR KZ LK LR LT LU LV MD MG MN MW MX NL NO NZ PL PT RO RU SD SE SI SK TJ TT UA UZ VN

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): KE MW SD SZ UG AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: CA