WO2021224585A1 - Closed-system suction catheter assemblies and methods - Google Patents

Closed-system suction catheter assemblies and methods Download PDF

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Publication number
WO2021224585A1
WO2021224585A1 PCT/GB2021/000048 GB2021000048W WO2021224585A1 WO 2021224585 A1 WO2021224585 A1 WO 2021224585A1 GB 2021000048 W GB2021000048 W GB 2021000048W WO 2021224585 A1 WO2021224585 A1 WO 2021224585A1
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WO
WIPO (PCT)
Prior art keywords
catheter
compressible member
assembly
bore
end fitting
Prior art date
Application number
PCT/GB2021/000048
Other languages
French (fr)
Inventor
Usamah HANIF
Original Assignee
Smiths Medical International Limited
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 Smiths Medical International Limited filed Critical Smiths Medical International Limited
Publication of WO2021224585A1 publication Critical patent/WO2021224585A1/en

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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
    • 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0816—Joints or connectors
    • 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
    • A61M16/0465—Tracheostomy tubes; Devices for performing a tracheostomy; Accessories therefor, e.g. masks, filters
    • A61M16/047—Masks, filters, surgical pads, devices for absorbing secretions, specially adapted therefor
    • 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
    • A61M2039/0036—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use characterised by a septum having particular features, e.g. having venting channels or being made from antimicrobial or self-lubricating elastomer
    • A61M2039/0072—Means for increasing tightness of the septum, e.g. compression rings, special materials, special constructions
    • 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
    • A61M2202/00—Special media to be introduced, removed or treated
    • A61M2202/04—Liquids
    • A61M2202/0468—Liquids non-physiological
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/02—General characteristics of the apparatus characterised by a particular materials
    • A61M2205/0227—Materials having sensing or indicating function, e.g. indicating a pressure increase
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/58—Means for facilitating use, e.g. by people with impaired vision
    • A61M2205/583—Means for facilitating use, e.g. by people with impaired vision by visual feedback
    • A61M2205/584—Means for facilitating use, e.g. by people with impaired vision by visual feedback having a color code
    • 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
    • A61M2209/00—Ancillary equipment
    • A61M2209/06—Packaging for specific medical equipment

Definitions

  • This invention relates to closed-system suction catheter assemblies of the kind having a suction catheter, a patient end fitting with a seal through which the forward, patient end of the catheter can be advanced and retracted, a machine end fitting attached to the rear end of the catheter, and a flexible envelope enclosing the catheter from the patient end fitting to the machine end fitting.
  • Suction catheter assemblies may be used to remove secretions from within a tracheal tube or the respiratory passages of a patient. They are also used in other applications. Suction catheter assemblies may be of the closed-system kind in which the catheter is enclosed within a flexible envelope. Such assemblies have a patient end fitting with a sliding seal through which a suction catheter can be advanced and withdrawn.
  • the flexible envelope is joined at one end to the patient end fitting and encloses the catheter along its length.
  • the other end of the envelope and the catheter are joined with a rear, machine end housing including a suction control valve and a connector.
  • the connector connects the catheter to a suction source and the valve enables the clinician to control the suction applied by the catheter.
  • a closed-system suction catheter assembly of the above-specified kind, characterised in that the seal includes a compressible member having a bore extending therethrough within which the catheter extends, that the length of the bore is greater than the external diameter of the catheter, and that the seal includes means for manually and adjustably applying force to the compressible member to compress it about the outside of the catheter in sealing engagement.
  • the compressible member preferably has a taper externally along a part at least of its length, the seal including a component having a recess that is tapered along a part at least of its length, a part at least of the taper along the compressible member extending along a part at least of the taper in the recess, and the means for applying force to the compressible member being arranged to apply a longitudinal force between the compressible member and the component to displace the compressible member further into the taper in the recess and thereby apply a radially inwardly directed compressive force to the compressible member to force the bore through the member closer into contact with the outside of catheter.
  • the means for applying force to the compressible member may include a manually rotatable screw-threaded member that engages with one end of the compressible member such that rotation of the screw-threaded member moves it longitudinally and applies a longitudinal force to the compressible member.
  • the assembly may include a washer between the screw-threaded member and the compressible member to reduce twisting of the compressible member caused by rotation of the screw-threaded member.
  • the means for applying force to the compressible member may include angular markings to indicate the relative angle of rotation of the screw-threaded member.
  • the assembly may include a detent formation between the screw-threaded member and the component on which it is threaded to resist displacement of the screw-threaded member from a position where a force is applied to the compressible member.
  • the assembly could include a substance in or on the compressible member that changes colour when the desired compression is achieved.
  • a method of providing a tracheostomy closed system suction catheter assembly having a suction catheter, a patient end fitting with a seal through which the forward, patient end of the catheter can be advanced and retracted, a machine end fitting attached with the rear end of the catheter, a flexible envelope enclosing the catheter from the patient end fitting to the machine end fitting, wherein the seal includes a compressible member having a bore extending therethrough within which the catheter extends, wherein the length of the bore is greater than the external diameter of the catheter, the seal including means for manually and adjustably applying force to the compressible member to compress it about the outside of the catheter in sealing engagement, wherein the assembly is packaged with the means for applying force in a first position where it does not apply any significant force to the compressible member and where the compressible member does not apply any significant force to the catheter, and wherein the assembly is subsequently removed from the packaging and before
  • Figure 1 is a side elevation view of the assembly
  • Figure 2 is an enlarged sectional perspective view of the patient end of the assembly with the wiper seal open;
  • Figure 3 is an enlarged sectional side elevation view of the patient end of the assembly with the wiper seal compressed.
  • the assembly has a rear, machine end fitting 1 with a ribbed, tapered male coupling 2 at its rear end adapted to receive one end of suction tubing 3 fitted on the coupling.
  • the machine end fitting 1 includes some form of valve 4 that the user can actuate to control suction applied to the machine end of a flexible, plastics suction catheter 5, which is fixed with the forward end of the machine end fitting.
  • the catheter 5 extends forwardly to a patient end fitting 10.
  • the catheter 5 is enclosed along its length between the machine end fitting 1 and the patient end fitting 10 within a flexible plastics envelope or sleeve 11 fixed at opposite ends to the forward end of the machine end fitting and to the rear end of the patient end fitting respectively.
  • the patient end fitting 10 assembly is connected to the machine end of a tracheal tube 12 or other airway and the catheter 5 is manipulated through the envelope 11 to advance it forwardly through the patient end fitting and down the bore of the tracheal tube.
  • the patient end fitting 10 is usually connected to the tracheal tube 12 via a manifold 13 of cruciform shape with four arms 14 to 17.
  • Two arms 14 and 15 are axially aligned with one another and are formed with female-tapered openings 14’ and 15’ adapted to receive a male- tapered coupling 18 on the machine end of the tracheal tube 12 and the patient end of the fitting 10, which is provided with a male-tapered surface 19.
  • Other forms of conventional coupling between the tracheal tube and the manifold could be used.
  • the other two arms 16 and 17 of the manifold 13 project in opposite directions at right angles to the arms 14 and 15. These two arms 16 and 17 may be connected to opposite limbs of a dual-limb breathing circuit (not shown) or one may be capped and the other arm connected to a single-limb breathing circuit. Where the patient is breathing spontaneously one arm would be capped and the other open to atmosphere, such as via an HME or filter.
  • the suction catheter assembly of the present invention differs from previous assemblies in the manner by which a seal is made with the outside of the suction catheter 5. Instead of the conventional narrow wiper seal that makes a relatively tight sliding fit with the outside of the catheter in the present arrangement the seal is made in an adjustable manner and along an extended length along the catheter 5. More particularly, the patient end fitting 10 includes a forward, patient end component 100 and a rear, machine-end unit or screw-threaded member 101.
  • the patient end component 100 is moulded from relatively rigid, transparent plastics materials. Its patient end 102 is tubular and tapers slightly externally to provide the male tapered surface 19 that is received in the opening 15’ of the manifold 13.
  • the patient end 102 tapers more steeply to form a reduced diameter opening 103 that makes a close sliding fit with the outside of the catheter 5 when this is extended through the opening.
  • an irrigation port 105 projects radially outwardly by which irrigation fluid can be introduced to a forward cavity 6 in the fitting to wash the tip of the catheter 5.
  • the port 105 is coupled to a short irrigation line 106 terminated by a valved or capped connector 107 arranged to receive the nose of a syringe or other source of irrigation liquid (not shown).
  • the rear, machine end 108 of the patient end fitting 10 has a screw formation 109 on its outer surface and a tapered recess 110 on its inner surface.
  • the machine end unit 101 of the patient end fitting 10 comprises an outer component in the form of a sleeve 112 and an inner washer 113, both being moulded of relatively hard plastics materials and being of generally tubular form.
  • the outer sleeve 112 is of a clear, hard transparent material and has, at its forward end, an internal screw thread 114 threadingly engaged with the external thread 109 on the rear of the patient end component 100.
  • the outer surface of the sleeve 112 may be moulded with formations such as ribs or knurls or other projections (not shown) to assist manual gripping and rotation of the sleeve.
  • the sleeve 112 also includes a wall 116 at its rear end having a central opening 117 that allows free, loose passage of the catheter 5.
  • a disc-shape washer 113 of a hard, low-friction plastics material is housed in the rear end of the sleeve 112 and is trapped between the inside surface of the wall 116 and a rear end face 131 of a compressible member 130. The washer 113 is free to rotate relative to the sleeve 113.
  • the sleeve 112 and the patient end component 100 may have angular markings to indicate the relative angle of rotation between the two components and thereby indicate when the compression member 130 is in an open state or in a compressed state.
  • the sleeve 112 and patient end component 100 may be provided with detent or stop formations that engage when the sleeve is tightened to a compressing position. These formations could be arranged such that the sleeve could not be twisted back to its original position after being tightened to the compressing position.
  • some means could be provided for indicating the extent of compression of the compression member, such as by including a piezochromic or other substance in or on the compression member that changes colour when the desired compression is achieved.
  • the compressible member 130 of an elastomeric material is preferably transparent.
  • the compressible member 130 has an axial bore 132 extending along its entire length, the diameter of the bore, in the natural, uncompressed state of the member, being sufficient to receive the catheter 5 therethrough as a loose sliding fit.
  • the length of the bore 132 is greater than the external diameter of the catheter 5 and is typically about three times its diameter.
  • the outer surface 134 of the compression member 130 is tapered from its patient end along most of its length.
  • the forward and rear end surfaces 133 and 131 of the compressible member 130 are flat and smooth.
  • the assembly After manufacture the assembly is set in an initial state with the patient end tip of the catheter 5 is located forwardly of the compressible member 130 in the cavity 6, such as shown in Figure 2 with the sleeve 112 is in a rearward location along the patient end component 100 so that no significant pressure is applied to the compressible member 130 and the catheter 5 is free to be manipulated along the patient end fitting 10. In this state the outer surface of the catheter 5 is not subjected to any pressure from the compressible member 130. The assembly is packaged and stored in this state.
  • the assembly When the assembly is to be used it is removed from packaging (not shown) and the clinician rotates the sleeve 112 of the patient end fitting 10 so that its screw-thread 114 and the thread 109 on the patient end component 100 cause it to be displaced forwardly relative to the patient end component. Engagement of the rear end wall 116 with the rear face 113’ of the washer 113 causes this to be moved forwardly but without rotation.
  • the nature of the materials used for the washer 113 and the sleeve 112 are selected to reduce friction between the two components. In this way, when the sleeve 112 is manually and adjustably tightened there is little risk that the compression member 130 will be twisted.
  • the forward end face of the washer 113 thereby applies pressure to the rear end face 131 of the compressible member 130 and causes it to be pushed further into the taper 110 at the rear end of the patient end component 100.
  • This causes the compression member 130 to be compressed radially inwardly and its bore 132 thereby to reduce in diameter as shown in Figure 3.
  • the result of this is that the compression member 130 is squeezed about the outside of the catheter 5 along the length of the bore 132 forming an elongated wiper seal along the bore and along a length about three times the diameter of the catheter 5.
  • the seal is sufficient to prevent air leaking past the seal into the envelope 11 but still allows the catheter 5 to be advanced and retracted by sliding through the seal.
  • the catheter 5 is engaged by the compression member 130 during use it need not be engaged during storage, which can be for months or years. Also, the seal contact with the catheter 5 is spread out along the catheter and is not localised as in conventional wiper seals, thereby distributing the loading and reducing the risk of damage to the catheter.
  • a screw sleeve and taper to compress the compression member about the catheter
  • other arrangements could be used such as an outer sleeve slidable longitudinally along an inner sleeve and engaged by a ratchet mechanism.
  • a band embracing the compression member and a cam lever could be used to tighten the band.
  • the present invention can be applied to various different forms of suction catheter assembly, such as those having a dual-lumen catheter and those having provision for irrigation in the patient end fitting.
  • the invention is not limited to suction catheter assemblies for use with tracheal tubes but could be used with other tubes requiring suction.

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  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Emergency Medicine (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
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  • General Health & Medical Sciences (AREA)
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Abstract

A closed system suction catheter assembly for tracheostomy tubes has a patient end seal formed by a compression member (130) with an axial bore (132) through with a suction catheter (5) extends. The compression member has a tapered external surface (134) that locates in a tapered recess (110) in a patient end component (100). A rear end face (131) of the compression member is engaged by the end wall (116) of a sleeve (112) screw threaded on the outside of the patient end component. The diameter of the bore through the compression member is larger than the external diameter of the catheter when the sleeve is in a rear position applying no significant compression to the compression member during storage. For use, the sleeve is screwed forwards to compress the compression member and compress its bore into a sliding, sealing engagement with the catheter.

Description

CLOSED-SYSTEM SUCTION CATHETER ASSEMBLIES AND METHODS
This invention relates to closed-system suction catheter assemblies of the kind having a suction catheter, a patient end fitting with a seal through which the forward, patient end of the catheter can be advanced and retracted, a machine end fitting attached to the rear end of the catheter, and a flexible envelope enclosing the catheter from the patient end fitting to the machine end fitting.
Suction catheter assemblies may be used to remove secretions from within a tracheal tube or the respiratory passages of a patient. They are also used in other applications. Suction catheter assemblies may be of the closed-system kind in which the catheter is enclosed within a flexible envelope. Such assemblies have a patient end fitting with a sliding seal through which a suction catheter can be advanced and withdrawn. The flexible envelope is joined at one end to the patient end fitting and encloses the catheter along its length. The other end of the envelope and the catheter are joined with a rear, machine end housing including a suction control valve and a connector. The connector connects the catheter to a suction source and the valve enables the clinician to control the suction applied by the catheter.
Examples of closed-system suction catheter assemblies are described in US5269768, US5300043, US4569344, US4638539, US4872579, US5167622, US5779687, US5325850, US5490503, US5419769, US5460613, US5349950, GB2394761, GB2400160, US6109259, US6227197, EP801577B, W096/09082, EP1239907B, EP1478424B, US6588427, EP1620148B, US2004/0221852, EP1911482A, EP1795217A, US2007/0282250, W02007/143502, US2008/0188833, US6227200, US6543451, EP1239909B, US6602219, EP 1347798, W002/49680, US6609520, WO/055143, US6805125, US6923184, US7021313, US7191782, W02004/101045, US7263997, W02004/103448, WOOO/15276, EP637257B, EP1113835B, EP1210957A, EP1237612B, US7152603, EP1267957B, US6978783, US2004/0007236, US2005/0211253, US2005/0211245, US2005/0235987, US7059322, W02004/032817, US2008/0135051, US4836199, US4850350, US4967743, US5025806, US5083561, US5220916, US5215522, US5255676, US5277177, US5309902, US5333606, US5343857, US5487381, US5513628, US5791337, EP1343552A, WO02/49699, US6612304, EP1322371A, WO02/28463, US6629530, W002/051485, US6769430, EP1330284, WO02/36191, US6886561, W02004/034946, US7188623, W02006/014431, US7341059, W02005/094925, W02006/ 103233, W02007/030388, W02009/003135, US4838255, US5107829, US5133345, US5642726, US6702789, US7458955, US7273473, US5139018, US4327723, US4515592, US6099519, EP695556B, US5065754, US5730123, US5207220, US5309903, US7086402, US7597686, US7726315, WO 11020985 and GB2468946. Closed system suction catheters are available from various manufacturers including Smiths Medical, Kimberley Clark, Covidien and Viasys.
One problem with conventional closed-system suction catheter assemblies arises from the sliding seal in the patient end fitting. The length of the suction catheter and the outer envelope are chosen so that, when the suction catheter is pulled rearwardly to its full extent, the tip of the catheter projects a short distance through the sliding seal into the patient end fitting. This has the advantage that the ensuring that the tip of the catheter is aligned with the opening in the seal and also prevents the envelope being inflated by gas pressure in the patient end fitting. Previous closed system catheter assemblies may, therefore, be manufactured and stored in this state, with the catheter extending through the sliding seal. The problem with this is that the relatively soft nature of the plastics material from which the catheter is extruded and the relatively tight interference fit exerted by the seal (needed to resist the positive pressure from the ventilator) means that the catheter is deformed by contact with the seal and takes on a permanent set in the form of a shallow indented annular groove or channel. This is unsightly and gives a poor feel as the catheter is advanced and retracted through the seal and during passage through the airway. Another disadvantage is that the indented groove weakens the tip of the catheter, which can be so severe, especially after repeated use and in small diameter catheters, that the tip of the catheter on the patient side of the groove detaches from the main part of the catheter and can enter the patient’s airway. This problem is exacerbated when the catheter is exposed to elevated temperatures such as during sterilization or storage. It is an object of the present invention to provide an alternative closed-system suction catheter assembly.
According to one aspect of the present invention there is provided a closed-system suction catheter assembly of the above-specified kind, characterised in that the seal includes a compressible member having a bore extending therethrough within which the catheter extends, that the length of the bore is greater than the external diameter of the catheter, and that the seal includes means for manually and adjustably applying force to the compressible member to compress it about the outside of the catheter in sealing engagement.
The compressible member preferably has a taper externally along a part at least of its length, the seal including a component having a recess that is tapered along a part at least of its length, a part at least of the taper along the compressible member extending along a part at least of the taper in the recess, and the means for applying force to the compressible member being arranged to apply a longitudinal force between the compressible member and the component to displace the compressible member further into the taper in the recess and thereby apply a radially inwardly directed compressive force to the compressible member to force the bore through the member closer into contact with the outside of catheter.
The means for applying force to the compressible member may include a manually rotatable screw-threaded member that engages with one end of the compressible member such that rotation of the screw-threaded member moves it longitudinally and applies a longitudinal force to the compressible member. The assembly may include a washer between the screw-threaded member and the compressible member to reduce twisting of the compressible member caused by rotation of the screw-threaded member. The means for applying force to the compressible member may include angular markings to indicate the relative angle of rotation of the screw-threaded member. The assembly may include a detent formation between the screw-threaded member and the component on which it is threaded to resist displacement of the screw-threaded member from a position where a force is applied to the compressible member. The assembly could include a substance in or on the compressible member that changes colour when the desired compression is achieved. According to another aspect of the present invention there is provided a method of providing a tracheostomy closed system suction catheter assembly having a suction catheter, a patient end fitting with a seal through which the forward, patient end of the catheter can be advanced and retracted, a machine end fitting attached with the rear end of the catheter, a flexible envelope enclosing the catheter from the patient end fitting to the machine end fitting, wherein the seal includes a compressible member having a bore extending therethrough within which the catheter extends, wherein the length of the bore is greater than the external diameter of the catheter, the seal including means for manually and adjustably applying force to the compressible member to compress it about the outside of the catheter in sealing engagement, wherein the assembly is packaged with the means for applying force in a first position where it does not apply any significant force to the compressible member and where the compressible member does not apply any significant force to the catheter, and wherein the assembly is subsequently removed from the packaging and before use the means for applying force is moved to a second position where the compressible member is compressed sufficiently for its bore to make a sliding, sealing contact with the outside of the catheter.
A closed-system suction catheter assembly according to the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
Figure 1 is a side elevation view of the assembly;
Figure 2 is an enlarged sectional perspective view of the patient end of the assembly with the wiper seal open; and
Figure 3 is an enlarged sectional side elevation view of the patient end of the assembly with the wiper seal compressed.
With reference first to Figures 1 and 2, the assembly has a rear, machine end fitting 1 with a ribbed, tapered male coupling 2 at its rear end adapted to receive one end of suction tubing 3 fitted on the coupling. Other forms of suction coupling are also available. The machine end fitting 1 includes some form of valve 4 that the user can actuate to control suction applied to the machine end of a flexible, plastics suction catheter 5, which is fixed with the forward end of the machine end fitting. The catheter 5 extends forwardly to a patient end fitting 10. The catheter 5 is enclosed along its length between the machine end fitting 1 and the patient end fitting 10 within a flexible plastics envelope or sleeve 11 fixed at opposite ends to the forward end of the machine end fitting and to the rear end of the patient end fitting respectively.
In use, the patient end fitting 10 assembly is connected to the machine end of a tracheal tube 12 or other airway and the catheter 5 is manipulated through the envelope 11 to advance it forwardly through the patient end fitting and down the bore of the tracheal tube. The patient end fitting 10 is usually connected to the tracheal tube 12 via a manifold 13 of cruciform shape with four arms 14 to 17. Two arms 14 and 15 are axially aligned with one another and are formed with female-tapered openings 14’ and 15’ adapted to receive a male- tapered coupling 18 on the machine end of the tracheal tube 12 and the patient end of the fitting 10, which is provided with a male-tapered surface 19. Other forms of conventional coupling between the tracheal tube and the manifold could be used. The other two arms 16 and 17 of the manifold 13 project in opposite directions at right angles to the arms 14 and 15. These two arms 16 and 17 may be connected to opposite limbs of a dual-limb breathing circuit (not shown) or one may be capped and the other arm connected to a single-limb breathing circuit. Where the patient is breathing spontaneously one arm would be capped and the other open to atmosphere, such as via an HME or filter.
As so far described the assembly is conventional.
The suction catheter assembly of the present invention differs from previous assemblies in the manner by which a seal is made with the outside of the suction catheter 5. Instead of the conventional narrow wiper seal that makes a relatively tight sliding fit with the outside of the catheter in the present arrangement the seal is made in an adjustable manner and along an extended length along the catheter 5. More particularly, the patient end fitting 10 includes a forward, patient end component 100 and a rear, machine-end unit or screw-threaded member 101. The patient end component 100 is moulded from relatively rigid, transparent plastics materials. Its patient end 102 is tubular and tapers slightly externally to provide the male tapered surface 19 that is received in the opening 15’ of the manifold 13. At its tip, the patient end 102 tapers more steeply to form a reduced diameter opening 103 that makes a close sliding fit with the outside of the catheter 5 when this is extended through the opening. Approximately midway along the patient end fitting 10 an irrigation port 105 projects radially outwardly by which irrigation fluid can be introduced to a forward cavity 6 in the fitting to wash the tip of the catheter 5. The port 105 is coupled to a short irrigation line 106 terminated by a valved or capped connector 107 arranged to receive the nose of a syringe or other source of irrigation liquid (not shown). The rear, machine end 108 of the patient end fitting 10 has a screw formation 109 on its outer surface and a tapered recess 110 on its inner surface.
The machine end unit 101 of the patient end fitting 10 comprises an outer component in the form of a sleeve 112 and an inner washer 113, both being moulded of relatively hard plastics materials and being of generally tubular form. The outer sleeve 112 is of a clear, hard transparent material and has, at its forward end, an internal screw thread 114 threadingly engaged with the external thread 109 on the rear of the patient end component 100. The outer surface of the sleeve 112 may be moulded with formations such as ribs or knurls or other projections (not shown) to assist manual gripping and rotation of the sleeve. The sleeve 112 also includes a wall 116 at its rear end having a central opening 117 that allows free, loose passage of the catheter 5. A disc-shape washer 113 of a hard, low-friction plastics material is housed in the rear end of the sleeve 112 and is trapped between the inside surface of the wall 116 and a rear end face 131 of a compressible member 130. The washer 113 is free to rotate relative to the sleeve 113.
The sleeve 112 and the patient end component 100 may have angular markings to indicate the relative angle of rotation between the two components and thereby indicate when the compression member 130 is in an open state or in a compressed state. The sleeve 112 and patient end component 100 may be provided with detent or stop formations that engage when the sleeve is tightened to a compressing position. These formations could be arranged such that the sleeve could not be twisted back to its original position after being tightened to the compressing position. Alternatively, or additionally, some means could be provided for indicating the extent of compression of the compression member, such as by including a piezochromic or other substance in or on the compression member that changes colour when the desired compression is achieved.
The compressible member 130 of an elastomeric material and is preferably transparent. The compressible member 130 has an axial bore 132 extending along its entire length, the diameter of the bore, in the natural, uncompressed state of the member, being sufficient to receive the catheter 5 therethrough as a loose sliding fit. The length of the bore 132 is greater than the external diameter of the catheter 5 and is typically about three times its diameter. The outer surface 134 of the compression member 130 is tapered from its patient end along most of its length. The forward and rear end surfaces 133 and 131 of the compressible member 130 are flat and smooth.
After manufacture the assembly is set in an initial state with the patient end tip of the catheter 5 is located forwardly of the compressible member 130 in the cavity 6, such as shown in Figure 2 with the sleeve 112 is in a rearward location along the patient end component 100 so that no significant pressure is applied to the compressible member 130 and the catheter 5 is free to be manipulated along the patient end fitting 10. In this state the outer surface of the catheter 5 is not subjected to any pressure from the compressible member 130. The assembly is packaged and stored in this state. When the assembly is to be used it is removed from packaging (not shown) and the clinician rotates the sleeve 112 of the patient end fitting 10 so that its screw-thread 114 and the thread 109 on the patient end component 100 cause it to be displaced forwardly relative to the patient end component. Engagement of the rear end wall 116 with the rear face 113’ of the washer 113 causes this to be moved forwardly but without rotation. The nature of the materials used for the washer 113 and the sleeve 112 are selected to reduce friction between the two components. In this way, when the sleeve 112 is manually and adjustably tightened there is little risk that the compression member 130 will be twisted. The forward end face of the washer 113 thereby applies pressure to the rear end face 131 of the compressible member 130 and causes it to be pushed further into the taper 110 at the rear end of the patient end component 100. This causes the compression member 130 to be compressed radially inwardly and its bore 132 thereby to reduce in diameter as shown in Figure 3. The result of this is that the compression member 130 is squeezed about the outside of the catheter 5 along the length of the bore 132 forming an elongated wiper seal along the bore and along a length about three times the diameter of the catheter 5. The seal is sufficient to prevent air leaking past the seal into the envelope 11 but still allows the catheter 5 to be advanced and retracted by sliding through the seal.
Although the catheter 5 is engaged by the compression member 130 during use it need not be engaged during storage, which can be for months or years. Also, the seal contact with the catheter 5 is spread out along the catheter and is not localised as in conventional wiper seals, thereby distributing the loading and reducing the risk of damage to the catheter.
Instead of using a screw sleeve and taper to compress the compression member about the catheter other arrangements could be used such as an outer sleeve slidable longitudinally along an inner sleeve and engaged by a ratchet mechanism. Alternatively, a band embracing the compression member and a cam lever could be used to tighten the band. The present invention can be applied to various different forms of suction catheter assembly, such as those having a dual-lumen catheter and those having provision for irrigation in the patient end fitting. The invention is not limited to suction catheter assemblies for use with tracheal tubes but could be used with other tubes requiring suction.

Claims

1. A closed-system suction catheter assembly having a suction catheter (5), a patient end fitting (10) with a seal (130) through which the forward, patient end of the catheter (5) can be advanced and retracted, a machine end fitting (1) attached to the rear end of the catheter, and a flexible envelope (11) enclosing the catheter (5) from the patient end fitting (10) to the machine end fitting (1), characterised in that the seal includes a compressible member (130) having a bore (132) extending therethrough within which the catheter (5) extends, that the length of the bore (132) is greater than the external diameter of the catheter (5), and that the seal includes means (100, 101) for manually and adjustably applying force to the compressible member (130) to compress it about the outside of the catheter (5) in sealing engagement.
2. An assembly according to Claim 1 , characterised in that the compressible member (130) has a taper (134) externally along a part at least of its length, that the seal includes a component (100) having a recess (110) that is tapered along a part at least of its length, that a part at least of the taper (134) along the compressible member (130) extends along a part at least of the taper in the recess (110), and that the means for applying force to the compressible member is arranged to apply a longitudinal force between the compressible member (130) and the component (100) to displace the compressible member (130) further into the taper in the recess (110) and thereby apply a radially inwardly directed compressive force to the compressible member (130) to force the bore (132) through the member closer into contact with the outside of catheter (5).
3. An assembly according to Claim 2, characterised in that the means for applying force to the compressible member includes a manually rotatable screw-threaded member (101) that engages with one end of the compressible member (130) such that rotation of the screw-threaded member (101) moves it longitudinally and applies a longitudinal force to the compressible member (130).
4. An assembly according to Claim 3, characterised in that the assembly includes a washer (113) between the screw-threaded member (101) and the compressible member (130) to reduce twisting of the compressible member caused by rotation of the screw-threaded member.
5. An assembly according to Claim 3 or 4, characterised in that the means (100, 101) for applying force to the compressible member (130) includes angular markings to indicate the relative angle of rotation of the screw-threaded member (101).
6. An assembly according to any one of Claims 3 to 5, characterised in that the assembly includes a detent formation between the screw-threaded member (101) and the component (100) on which it is threaded to resist displacement of the screw- threaded member from a position where a force is applied to the compressible member (130).
7. An assembly according to any one of the preceding claims, characterised in that assembly includes a substance in or on the compressible member (130) that changes colour when the desired compression is achieved.
8. A method of providing a tracheostomy closed system suction catheter assembly having a suction catheter (5), a patient end fitting (10) with a seal (130) through which the forward, patient end of the catheter can be advanced and retracted, a machine end fitting (1) attached with the rear end of the catheter, a flexible envelope (11) enclosing the catheter from the patient end fitting (10) to the machine end fitting (1), wherein the seal includes a compressible member (130) having a bore (132) extending therethrough within which the catheter (5) extends, wherein the length of the bore (132) is greater than the external diameter of the catheter (5), the seal including means (100, 101) for manually and adjustably applying force to the compressible member (132) to compress it about the outside of the catheter (5) in sealing engagement, wherein the assembly is packaged with the means for applying force (100, 101) in a first position where it does not apply any significant force to the compressible member (130) and where the compressible member does not apply any significant force to the catheter (5), and wherein the assembly is subsequently removed from the packaging and before use the means for applying force (100, 101) is moved to a second position where the compressible member (130) is compressed sufficiently for its bore (132) to make a sliding, sealing contact with the outside of the catheter (5).
PCT/GB2021/000048 2020-05-04 2021-04-29 Closed-system suction catheter assemblies and methods WO2021224585A1 (en)

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Citations (93)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3991762A (en) * 1974-09-30 1976-11-16 Radford F Richard Aspirating device for patient ventilation apparatus
US4327723A (en) 1980-05-13 1982-05-04 Arrow International, Inc. Catheter shield
US4515592A (en) 1980-05-13 1985-05-07 Arrow International, Inc. Catheter shield
US4569344A (en) 1984-07-23 1986-02-11 Ballard Medical Products Aspirating/ventilating apparatus and method
US4668222A (en) * 1984-05-25 1987-05-26 Thermedics Inc. Percutaneous access device with removable tube
US4836199A (en) 1984-07-23 1989-06-06 Ballard Medical Products Aspirating/ventilating apparatus and method
US4838255A (en) 1987-03-11 1989-06-13 Ballard Medical Products Neonatal closed system for involuntary aspiration and ventilation, and method
US4850350A (en) 1986-06-23 1989-07-25 Sheridan Catheter Corp. Closed system combined suction and ventilation devices
US4872579A (en) 1984-07-23 1989-10-10 Ballard Medical Products Aspirating/ventilating apparatus and method
DE3830653A1 (en) * 1988-09-09 1990-03-22 Braun Melsungen Ag CUTLERY FOR THE INTRAPLEURAL REGIONALANAESTHESIA
US5025806A (en) 1990-04-16 1991-06-25 Ballard Medical Products Medical ventilating and a spirating apparatus and methods
US5053015A (en) * 1989-08-30 1991-10-01 The Kendall Company Locking catheter adapter
US5065754A (en) 1990-06-06 1991-11-19 Ballard Medical Products Aspirating catheter tube inserter
US5083561A (en) 1990-06-14 1992-01-28 Russo Ronald D Tracheal suction catheter
US5107829A (en) 1987-03-11 1992-04-28 Ballard Medical Products Neonatal closed system for involuntary aspiration and ventilation, and method
US5133345A (en) 1987-03-11 1992-07-28 Ballard Medical Products Neonatal closed system for involuntary aspiration and ventilation, and method
US5139018A (en) 1990-07-24 1992-08-18 Superior Healthcare Group, Inc. Patient ventilating apparatus with aspirating catheter
US5167636A (en) * 1991-10-24 1992-12-01 Mectra Labs, Inc. Cannula sealing mechanism
US5167622A (en) 1990-12-07 1992-12-01 Smiths Industries Medical Systems, Inc. Triple conduit suction catheter
US5207220A (en) 1989-12-12 1993-05-04 Burroughs Wellcome Co. Method for administering pharmaceuticals, including liquid surfactant, to the lungs
US5215522A (en) 1984-07-23 1993-06-01 Ballard Medical Products Single use medical aspirating device and method
US5220916A (en) 1990-06-14 1993-06-22 Russo Ronald D Tracheal suction catheter
US5255676A (en) 1991-11-08 1993-10-26 Russo Ronald D Safety sealed tracheal suction system
US5269768A (en) 1993-02-08 1993-12-14 Smiths Industries Medical Systems, Inc. Valved suction catheter
US5269764A (en) * 1992-08-21 1993-12-14 Devices For Vascular Intervention, Inc. Hemostatic gasket and valve assembly
US5277177A (en) 1984-07-23 1994-01-11 Ballard Medical Products Single use medical aspirating device and method
US5300043A (en) 1992-10-23 1994-04-05 Smiths Industries Medical Systems, Inc. Suction catheter valve
US5309902A (en) 1992-10-19 1994-05-10 Sherwood Medical Company Respiratory support system and suction catheter device therefor
US5325850A (en) 1992-09-30 1994-07-05 Smith Industries Medical Systems, Inc. Suction catheter assemblies
US5333606A (en) 1992-04-24 1994-08-02 Sherwood Medical Company Method for using a respirator accessory access port and adaptor therefore
US5349950A (en) 1992-10-28 1994-09-27 Smiths Industries Medical Systems, Inc. Suction catheter assemblies
DE29503750U1 (en) * 1995-03-04 1995-04-27 Braun Melsungen Ag Fixing device
US5419769A (en) 1992-10-23 1995-05-30 Smiths Industries Medical Systems, Inc. Suction systems
US5487381A (en) 1994-04-20 1996-01-30 Jinotti; Walter J. Closed system for treating pulmonary patient
US5490503A (en) 1994-04-29 1996-02-13 Smiths Industries Medical Systems, Inc. Suction catheter having multiple valves and collet assembly
WO1996009082A1 (en) 1994-09-19 1996-03-28 Sorenson Critical Care, Inc. Apparatus and method for ventilating and aspirating
US5513628A (en) 1993-07-14 1996-05-07 Sorenson Critical Care, Inc. Apparatus and method for ventilating and aspirating
US5642726A (en) 1994-10-18 1997-07-01 Alcove Medical, Inc. Reduced internal volume neonatal suction adaptor
US5730123A (en) 1994-05-18 1998-03-24 Ballard Medical Products Medical multiple access low dead space anti-microbial aspirating/ventilating closed system improvements and methods
US5779687A (en) 1992-09-24 1998-07-14 Smiths Industries Public Limited Company Method of removing undesirable fluid from respiration passages by suction catheter assemblies
EP0856332A1 (en) * 1997-01-31 1998-08-05 Becton, Dickinson and Company Adapter for mounting a fluid handling device on a catheter tubing
WO2000015276A1 (en) 1998-09-17 2000-03-23 Ballard Medical Products Respiratory suction catheter apparatus
US6099519A (en) 1994-07-29 2000-08-08 Tyco Healthcare Group Lp Catheter sleeve connecting assembly
US6109259A (en) 1997-12-10 2000-08-29 Spirit Medical Systems, Inc. Gas supplying and substance suctioning relative to a patients trachea
EP0637257B1 (en) 1992-04-24 2000-11-29 Sherwood Medical Company Respiratory support system
WO2002028463A2 (en) 2000-10-05 2002-04-11 Kimberly-Clark Worldwide, Inc. Respiratory care multiple access port assembly and adapter
WO2002036191A2 (en) 2000-10-31 2002-05-10 Ballard Medical Products Heat and moisture exchanger adaptor
EP1210957A1 (en) 2000-11-24 2002-06-05 D.E.A.S. S.R.L. Closed tracheal suction system
WO2002049699A2 (en) 2000-12-21 2002-06-27 Kimberly-Clark Worldwide, Inc. Respiratory suction catheter apparatus with antimicrobial chamber
WO2002049680A2 (en) 2000-12-19 2002-06-27 Kimberly-Clark Worldwide, Inc. Turbulent air cleaning method and apparatus for catheter assemblies
WO2002051485A1 (en) 2000-12-22 2002-07-04 Kimberly-Clark Worldwide, Inc. Single-element sealing valve for a respiratory support system
US6543451B1 (en) 1999-12-23 2003-04-08 Kimberly-Clark Worldwide, Inc. Endotracheal catheter and manifold assembly with improved seal and valve
US6588427B1 (en) 2002-02-25 2003-07-08 Kimberly-Clark Worldwide, Inc. Heat and moisture exchanger adapter to closed suction catheter assembly and system having improved catheter cleaning
US6609520B1 (en) 2000-10-31 2003-08-26 Kimberly-Clark Worldwide, Inc. Closed suction catheter adaptor and assembly containing the same
US20040007236A1 (en) 2002-03-15 2004-01-15 Mcgee Thomas E. Endotracheal surfactant distribution system
US6688306B1 (en) * 2000-11-27 2004-02-10 Kimberly-Clark Worldwide, Inc. Clamping assembly for maintaining the position of a respiratory care treatment device
US6702789B1 (en) 1997-03-11 2004-03-09 Alcove Medical, Inc. Catheter having insertion control mechanism and anti-bunching mechanism
WO2004032817A2 (en) 2002-10-11 2004-04-22 Ric Investments, Inc. Low deadspace airway adapter
WO2004034946A2 (en) 2002-10-09 2004-04-29 Harry Bayron Improved respiratory valve
GB2394761A (en) 2002-10-29 2004-05-05 Smiths Group Plc Slit valve and suction catheter
GB2400160A (en) 2003-02-27 2004-10-06 Smiths Group Plc Valve and suction catheter assembly
US20040221852A1 (en) 2003-05-06 2004-11-11 Madsen Edward B. Respiratory apparatus having an introduction section configured for releasable attachment with a respiratory instrument
WO2004101045A1 (en) 2003-05-06 2004-11-25 Kimberly-Clark Worldwide Inc. Respiratory suction catheter apparatus configured for releasable attachment with an artificial airway structure
WO2004103448A1 (en) 2003-05-06 2004-12-02 Kimberly-Clark Worldwide, Inc. Respiratory apparatus having an instrument introduction section and manifold
WO2005005143A1 (en) 2003-07-10 2005-01-20 Total Petrochemicals Research Feluy High transparency, high impact resistance containers
US6923184B1 (en) 2001-02-05 2005-08-02 Ronald D. Russo Suction system with high efficiency suction control valve
US20050211245A1 (en) 2002-05-06 2005-09-29 The Research Foundation Of State University Of New York Methods, devices and formulations for targeted endobronchial therapy
WO2005094925A1 (en) 2004-03-31 2005-10-13 Fisher & Paykel Healthcare Limited A patient ventilating and aspirating system
US6978783B2 (en) 2000-04-06 2005-12-27 Unomedical A/S Manifold
WO2006014431A2 (en) 2004-07-07 2006-02-09 Egret Medical Products, Inc. Suction catheter assembly
EP1237612B1 (en) 1999-12-13 2006-02-15 Ballard Medical Products Endotracheal catheter and manifold assembly with flap valve
US7021313B1 (en) 1998-09-21 2006-04-04 Ballard Medical Products Respiratory suction catheter apparatus with improved valve and collar
US7086402B2 (en) 2004-10-05 2006-08-08 Transtracheal Systems, Inc. Tracheal tube/tracheal catheter adaptor cap
EP1113835B1 (en) 1998-09-17 2006-08-23 Ballard Medical Products Respiratory suction catheter apparatus
WO2006103233A1 (en) 2005-03-31 2006-10-05 Nycomed Gmbh Arrangement comprising a catheter and connector piece, and valve for passage of a catheter
WO2007030388A2 (en) 2005-09-06 2007-03-15 Fox Hollow Technologies, Inc. Methods and apparatus for assisted aspiration
EP1795217A1 (en) 2005-12-10 2007-06-13 Ahmmed Ziah Taufig Suction cannula
EP1239907B1 (en) 1999-12-13 2007-09-12 Ballard Medical Products Endotracheal catheter and manifold assembly with improved valve
US20070282250A1 (en) 2006-06-01 2007-12-06 Egret Medical Products, Inc. Neonate suction catheter assembly
US7341059B2 (en) 2002-02-04 2008-03-11 Fisher & Paykel Healthcare Limited Breathing assistance apparatus
US20080135051A1 (en) 2006-12-07 2008-06-12 George Lee Air Line Adapter Structure Of Suction Apparatus
US20080188833A1 (en) 2007-02-01 2008-08-07 Ahmmed Ziah Taufig Suction cannula
WO2009003135A1 (en) 2007-06-26 2008-12-31 Lipocosm Llc System and method for continuous processing of lipoaspirate
US20100137775A1 (en) * 2008-11-25 2010-06-03 Spiracur Inc. Device for delivery of reduced pressure to body surfaces
GB2468946A (en) 2009-03-26 2010-09-29 Smiths Medical Int Ltd Closed system suction catheter assembly
US7850729B2 (en) * 2002-07-18 2010-12-14 The University Of Cincinnati Deforming jacket for a heart actuation device
WO2011020985A1 (en) 2009-08-20 2011-02-24 Smiths Medical International Limited Ventilation and suction systems and assemblies
WO2011126812A1 (en) * 2010-03-29 2011-10-13 Endoclear, Llc Airway cleaning and visualization
US8720445B2 (en) * 2007-06-15 2014-05-13 Affirm Medical Technologies, Llc Tracheal tube with colorimetric CO2 indicator
US8827973B2 (en) * 2011-06-24 2014-09-09 Kci Licensing, Inc. Medical drapes, devices, and systems employing a holographically-formed polymer dispersed liquid crystal (H-PDLC) device
US8905028B2 (en) * 2011-05-11 2014-12-09 Carefusion 207, Inc. Non-invasive ventilation facial skin protection
US9808562B2 (en) * 2009-04-10 2017-11-07 Kci Licensing, Inc. Methods and devices for applying closed incision negative pressure wound therapy
US20170368284A1 (en) * 2015-01-24 2017-12-28 Smiths Medical International Limited Medico-surgical tube and flange assemblies

Patent Citations (131)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3991762A (en) * 1974-09-30 1976-11-16 Radford F Richard Aspirating device for patient ventilation apparatus
US4327723A (en) 1980-05-13 1982-05-04 Arrow International, Inc. Catheter shield
US4515592A (en) 1980-05-13 1985-05-07 Arrow International, Inc. Catheter shield
US4668222A (en) * 1984-05-25 1987-05-26 Thermedics Inc. Percutaneous access device with removable tube
US5215522A (en) 1984-07-23 1993-06-01 Ballard Medical Products Single use medical aspirating device and method
US4638539A (en) 1984-07-23 1987-01-27 Ballard Medical Products Aspirating/ventilating apparatus and method
US4836199A (en) 1984-07-23 1989-06-06 Ballard Medical Products Aspirating/ventilating apparatus and method
US4872579A (en) 1984-07-23 1989-10-10 Ballard Medical Products Aspirating/ventilating apparatus and method
US4569344A (en) 1984-07-23 1986-02-11 Ballard Medical Products Aspirating/ventilating apparatus and method
US5277177A (en) 1984-07-23 1994-01-11 Ballard Medical Products Single use medical aspirating device and method
US4850350A (en) 1986-06-23 1989-07-25 Sheridan Catheter Corp. Closed system combined suction and ventilation devices
US4838255A (en) 1987-03-11 1989-06-13 Ballard Medical Products Neonatal closed system for involuntary aspiration and ventilation, and method
US4967743A (en) 1987-03-11 1990-11-06 Ballard Medical Products Neonatal closed system for involuntary aspiration and ventilation, and method
US5133345A (en) 1987-03-11 1992-07-28 Ballard Medical Products Neonatal closed system for involuntary aspiration and ventilation, and method
US5107829A (en) 1987-03-11 1992-04-28 Ballard Medical Products Neonatal closed system for involuntary aspiration and ventilation, and method
DE3830653A1 (en) * 1988-09-09 1990-03-22 Braun Melsungen Ag CUTLERY FOR THE INTRAPLEURAL REGIONALANAESTHESIA
US5053015A (en) * 1989-08-30 1991-10-01 The Kendall Company Locking catheter adapter
US5309903A (en) 1989-12-12 1994-05-10 Burroughs Wellcome Co. Method for administering surfactant to the lungs while concurrently providing one-lung ventilation
US5207220A (en) 1989-12-12 1993-05-04 Burroughs Wellcome Co. Method for administering pharmaceuticals, including liquid surfactant, to the lungs
US5025806A (en) 1990-04-16 1991-06-25 Ballard Medical Products Medical ventilating and a spirating apparatus and methods
US5065754A (en) 1990-06-06 1991-11-19 Ballard Medical Products Aspirating catheter tube inserter
US5220916A (en) 1990-06-14 1993-06-22 Russo Ronald D Tracheal suction catheter
US5083561A (en) 1990-06-14 1992-01-28 Russo Ronald D Tracheal suction catheter
US5083561B1 (en) 1990-06-14 1993-05-18 D. Russo Ronald Tracheal suction catheter
US5139018A (en) 1990-07-24 1992-08-18 Superior Healthcare Group, Inc. Patient ventilating apparatus with aspirating catheter
US5167622A (en) 1990-12-07 1992-12-01 Smiths Industries Medical Systems, Inc. Triple conduit suction catheter
US5167636A (en) * 1991-10-24 1992-12-01 Mectra Labs, Inc. Cannula sealing mechanism
US5255676A (en) 1991-11-08 1993-10-26 Russo Ronald D Safety sealed tracheal suction system
US5333606A (en) 1992-04-24 1994-08-02 Sherwood Medical Company Method for using a respirator accessory access port and adaptor therefore
US5343857A (en) 1992-04-24 1994-09-06 Sherwood Medical Company Respiratory accessory access port and adaptor therefore
EP0637257B1 (en) 1992-04-24 2000-11-29 Sherwood Medical Company Respiratory support system
US5269764A (en) * 1992-08-21 1993-12-14 Devices For Vascular Intervention, Inc. Hemostatic gasket and valve assembly
US5779687A (en) 1992-09-24 1998-07-14 Smiths Industries Public Limited Company Method of removing undesirable fluid from respiration passages by suction catheter assemblies
US5325850A (en) 1992-09-30 1994-07-05 Smith Industries Medical Systems, Inc. Suction catheter assemblies
US5309902A (en) 1992-10-19 1994-05-10 Sherwood Medical Company Respiratory support system and suction catheter device therefor
US5300043A (en) 1992-10-23 1994-04-05 Smiths Industries Medical Systems, Inc. Suction catheter valve
US5419769A (en) 1992-10-23 1995-05-30 Smiths Industries Medical Systems, Inc. Suction systems
US5349950A (en) 1992-10-28 1994-09-27 Smiths Industries Medical Systems, Inc. Suction catheter assemblies
US5460613A (en) 1992-10-28 1995-10-24 Smiths Industries Medical Systems, Inc. Suction catheter assemblies
US5269768A (en) 1993-02-08 1993-12-14 Smiths Industries Medical Systems, Inc. Valved suction catheter
US5513628A (en) 1993-07-14 1996-05-07 Sorenson Critical Care, Inc. Apparatus and method for ventilating and aspirating
US5791337A (en) 1993-07-14 1998-08-11 Coles; Peter W. H. Apparatus and method for ventilating and aspirating
US5487381A (en) 1994-04-20 1996-01-30 Jinotti; Walter J. Closed system for treating pulmonary patient
US5490503A (en) 1994-04-29 1996-02-13 Smiths Industries Medical Systems, Inc. Suction catheter having multiple valves and collet assembly
US5730123A (en) 1994-05-18 1998-03-24 Ballard Medical Products Medical multiple access low dead space anti-microbial aspirating/ventilating closed system improvements and methods
US6099519A (en) 1994-07-29 2000-08-08 Tyco Healthcare Group Lp Catheter sleeve connecting assembly
EP0695556B1 (en) 1994-07-29 2003-01-22 Tyco International (Us) Inc. Catheter sleeve connecting assembly
EP0801577B1 (en) 1994-09-19 2002-03-13 Sorenson Medical, Inc. Apparatus for ventilating and aspirating
WO1996009082A1 (en) 1994-09-19 1996-03-28 Sorenson Critical Care, Inc. Apparatus and method for ventilating and aspirating
US5642726A (en) 1994-10-18 1997-07-01 Alcove Medical, Inc. Reduced internal volume neonatal suction adaptor
DE29503750U1 (en) * 1995-03-04 1995-04-27 Braun Melsungen Ag Fixing device
EP0856332A1 (en) * 1997-01-31 1998-08-05 Becton, Dickinson and Company Adapter for mounting a fluid handling device on a catheter tubing
US7458955B2 (en) 1997-03-11 2008-12-02 Owens Warren D Catheter having insertion control mechanism
US7273473B2 (en) 1997-03-11 2007-09-25 Alcove Medical Inc. Sleeved catheter having insertion control mechanism
US6702789B1 (en) 1997-03-11 2004-03-09 Alcove Medical, Inc. Catheter having insertion control mechanism and anti-bunching mechanism
US6109259A (en) 1997-12-10 2000-08-29 Spirit Medical Systems, Inc. Gas supplying and substance suctioning relative to a patients trachea
US6227197B1 (en) 1997-12-10 2001-05-08 Respironics, Inc. Gas supplying and substance suctioning relative to a patients trachea
WO2000015276A1 (en) 1998-09-17 2000-03-23 Ballard Medical Products Respiratory suction catheter apparatus
EP1113835B1 (en) 1998-09-17 2006-08-23 Ballard Medical Products Respiratory suction catheter apparatus
US6805125B1 (en) 1998-09-21 2004-10-19 Ballard Medical Products Respiratory suction catherer apparatus
US6227200B1 (en) 1998-09-21 2001-05-08 Ballard Medical Products Respiratory suction catheter apparatus
US7021313B1 (en) 1998-09-21 2006-04-04 Ballard Medical Products Respiratory suction catheter apparatus with improved valve and collar
EP1237612B1 (en) 1999-12-13 2006-02-15 Ballard Medical Products Endotracheal catheter and manifold assembly with flap valve
EP1239907B1 (en) 1999-12-13 2007-09-12 Ballard Medical Products Endotracheal catheter and manifold assembly with improved valve
US7152603B1 (en) 1999-12-13 2006-12-26 Kimberly-Clark Worldwide, Inc. Endotracheal catheter and manifold assembly with improved valve
US6543451B1 (en) 1999-12-23 2003-04-08 Kimberly-Clark Worldwide, Inc. Endotracheal catheter and manifold assembly with improved seal and valve
EP1239909B1 (en) 1999-12-23 2005-08-03 Ballard Medical Products Endotracheal catheter and manifold assembly with seal and valve
EP1267957B1 (en) 2000-04-06 2007-10-31 Unomedical A/S A manifold
US6978783B2 (en) 2000-04-06 2005-12-27 Unomedical A/S Manifold
EP1322371A2 (en) 2000-10-05 2003-07-02 Kimberly-Clark Worldwide, Inc. Respiratory care multiple access port assembly and adapter
US6612304B1 (en) 2000-10-05 2003-09-02 Kimberly-Clark Worldwide, Inc. Respiratory care multiple access port assembly and adapter
WO2002028463A2 (en) 2000-10-05 2002-04-11 Kimberly-Clark Worldwide, Inc. Respiratory care multiple access port assembly and adapter
EP1330284A2 (en) 2000-10-31 2003-07-30 Kimberly-Clark Worldwide, Inc. Heat and moisture exchanger adaptor
US6769430B1 (en) 2000-10-31 2004-08-03 Kimberly-Clark Worldwide, Inc. Heat and moisture exchanger adaptor for closed suction catheter assembly and system containing the same
US6609520B1 (en) 2000-10-31 2003-08-26 Kimberly-Clark Worldwide, Inc. Closed suction catheter adaptor and assembly containing the same
WO2002036191A2 (en) 2000-10-31 2002-05-10 Ballard Medical Products Heat and moisture exchanger adaptor
EP1210957A1 (en) 2000-11-24 2002-06-05 D.E.A.S. S.R.L. Closed tracheal suction system
US6688306B1 (en) * 2000-11-27 2004-02-10 Kimberly-Clark Worldwide, Inc. Clamping assembly for maintaining the position of a respiratory care treatment device
WO2002049680A2 (en) 2000-12-19 2002-06-27 Kimberly-Clark Worldwide, Inc. Turbulent air cleaning method and apparatus for catheter assemblies
EP1911482A2 (en) 2000-12-19 2008-04-16 Kimberly-Clark Worldwide, Inc. Turbulent air cleaning method and apparatus for catheter assemblies
EP1347798A2 (en) 2000-12-19 2003-10-01 Kimberly-Clark Worldwide, Inc. Turbulent air cleaning method and apparatus for catheter assemblies
US6602219B2 (en) 2000-12-19 2003-08-05 Kimberly-Clark Worldwide, Inc. Turbulent air cleaning method and apparatus for catheter assemblies
WO2002049699A2 (en) 2000-12-21 2002-06-27 Kimberly-Clark Worldwide, Inc. Respiratory suction catheter apparatus with antimicrobial chamber
EP1343552A2 (en) 2000-12-21 2003-09-17 Kimberly-Clark Worldwide, Inc. Respiratory suction catheter apparatus with antimicrobial chamber
US6629530B2 (en) 2000-12-22 2003-10-07 Kimberly-Clark Worldwide, Inc. Single-element sealing valve for a respiratory support system
WO2002051485A1 (en) 2000-12-22 2002-07-04 Kimberly-Clark Worldwide, Inc. Single-element sealing valve for a respiratory support system
US6923184B1 (en) 2001-02-05 2005-08-02 Ronald D. Russo Suction system with high efficiency suction control valve
US7341059B2 (en) 2002-02-04 2008-03-11 Fisher & Paykel Healthcare Limited Breathing assistance apparatus
EP1478424B1 (en) 2002-02-25 2008-01-02 Kimberly-Clark Worldwide, Inc. Heat and moisture exchanger adapter for closed suction catheter assembly and system having improved catheter cleaning
US6588427B1 (en) 2002-02-25 2003-07-08 Kimberly-Clark Worldwide, Inc. Heat and moisture exchanger adapter to closed suction catheter assembly and system having improved catheter cleaning
US20040007236A1 (en) 2002-03-15 2004-01-15 Mcgee Thomas E. Endotracheal surfactant distribution system
US20050235987A1 (en) 2002-05-06 2005-10-27 The Research Foundation Of State University Of New York Methods, devices and formulations for targeted endobronchial therapy
US20050211253A1 (en) 2002-05-06 2005-09-29 The Research Foundation Of State University Of New York Methods, devices and formulations for targeted endobronchial therapy
US20050211245A1 (en) 2002-05-06 2005-09-29 The Research Foundation Of State University Of New York Methods, devices and formulations for targeted endobronchial therapy
US7850729B2 (en) * 2002-07-18 2010-12-14 The University Of Cincinnati Deforming jacket for a heart actuation device
US6886561B2 (en) 2002-10-09 2005-05-03 Harry Bayron Respiratory valve
WO2004034946A2 (en) 2002-10-09 2004-04-29 Harry Bayron Improved respiratory valve
US7059322B2 (en) 2002-10-11 2006-06-13 Ric Investments, Llc. Low deadspace airway adapter
WO2004032817A2 (en) 2002-10-11 2004-04-22 Ric Investments, Inc. Low deadspace airway adapter
US7726315B2 (en) 2002-10-29 2010-06-01 Smiths Group Plc Valves
GB2394761A (en) 2002-10-29 2004-05-05 Smiths Group Plc Slit valve and suction catheter
GB2400160A (en) 2003-02-27 2004-10-06 Smiths Group Plc Valve and suction catheter assembly
US7597686B2 (en) 2003-02-27 2009-10-06 Smiths Group Plc Valves and suction catheter assemblies
EP1620148B1 (en) 2003-05-06 2008-09-03 Kimberly-Clark Worldwide, Inc. Respiratory apparatus having an introduction section configured for releasable attachment with a respiratory instrument
US7263997B2 (en) 2003-05-06 2007-09-04 Kimberly-Clark Worldwide, Inc Respiratory apparatus having an instrument introduction section and manifold
US20040221852A1 (en) 2003-05-06 2004-11-11 Madsen Edward B. Respiratory apparatus having an introduction section configured for releasable attachment with a respiratory instrument
US7191782B2 (en) 2003-05-06 2007-03-20 Kimberly-Clark Worldwide, Inc. Respiratory suction catheter apparatus configured for releasable attachment with an artificial airway structure
WO2004101045A1 (en) 2003-05-06 2004-11-25 Kimberly-Clark Worldwide Inc. Respiratory suction catheter apparatus configured for releasable attachment with an artificial airway structure
WO2004103448A1 (en) 2003-05-06 2004-12-02 Kimberly-Clark Worldwide, Inc. Respiratory apparatus having an instrument introduction section and manifold
WO2005005143A1 (en) 2003-07-10 2005-01-20 Total Petrochemicals Research Feluy High transparency, high impact resistance containers
WO2005094925A1 (en) 2004-03-31 2005-10-13 Fisher & Paykel Healthcare Limited A patient ventilating and aspirating system
US7188623B2 (en) 2004-07-07 2007-03-13 Egret Medical Products, Inc. Suction catheter assembly
WO2006014431A2 (en) 2004-07-07 2006-02-09 Egret Medical Products, Inc. Suction catheter assembly
US7086402B2 (en) 2004-10-05 2006-08-08 Transtracheal Systems, Inc. Tracheal tube/tracheal catheter adaptor cap
WO2006103233A1 (en) 2005-03-31 2006-10-05 Nycomed Gmbh Arrangement comprising a catheter and connector piece, and valve for passage of a catheter
WO2007030388A2 (en) 2005-09-06 2007-03-15 Fox Hollow Technologies, Inc. Methods and apparatus for assisted aspiration
EP1795217A1 (en) 2005-12-10 2007-06-13 Ahmmed Ziah Taufig Suction cannula
WO2007143502A2 (en) 2006-06-01 2007-12-13 Egret Medical Products Inc. Neonate suction catheter assembly
US20070282250A1 (en) 2006-06-01 2007-12-06 Egret Medical Products, Inc. Neonate suction catheter assembly
US20080135051A1 (en) 2006-12-07 2008-06-12 George Lee Air Line Adapter Structure Of Suction Apparatus
US20080188833A1 (en) 2007-02-01 2008-08-07 Ahmmed Ziah Taufig Suction cannula
US8720445B2 (en) * 2007-06-15 2014-05-13 Affirm Medical Technologies, Llc Tracheal tube with colorimetric CO2 indicator
WO2009003135A1 (en) 2007-06-26 2008-12-31 Lipocosm Llc System and method for continuous processing of lipoaspirate
US20100137775A1 (en) * 2008-11-25 2010-06-03 Spiracur Inc. Device for delivery of reduced pressure to body surfaces
GB2468946A (en) 2009-03-26 2010-09-29 Smiths Medical Int Ltd Closed system suction catheter assembly
US9808562B2 (en) * 2009-04-10 2017-11-07 Kci Licensing, Inc. Methods and devices for applying closed incision negative pressure wound therapy
WO2011020985A1 (en) 2009-08-20 2011-02-24 Smiths Medical International Limited Ventilation and suction systems and assemblies
WO2011126812A1 (en) * 2010-03-29 2011-10-13 Endoclear, Llc Airway cleaning and visualization
US8905028B2 (en) * 2011-05-11 2014-12-09 Carefusion 207, Inc. Non-invasive ventilation facial skin protection
US8827973B2 (en) * 2011-06-24 2014-09-09 Kci Licensing, Inc. Medical drapes, devices, and systems employing a holographically-formed polymer dispersed liquid crystal (H-PDLC) device
US20170368284A1 (en) * 2015-01-24 2017-12-28 Smiths Medical International Limited Medico-surgical tube and flange assemblies

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