GB2178811A - Catheter valve retaining device - Google Patents

Catheter valve retaining device Download PDF

Info

Publication number
GB2178811A
GB2178811A GB08519833A GB8519833A GB2178811A GB 2178811 A GB2178811 A GB 2178811A GB 08519833 A GB08519833 A GB 08519833A GB 8519833 A GB8519833 A GB 8519833A GB 2178811 A GB2178811 A GB 2178811A
Authority
GB
United Kingdom
Prior art keywords
catheter
connector
retaining device
distended
shoulder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB08519833A
Other versions
GB8519833D0 (en
Inventor
John Glyndwr Wilmot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Consort Medical PLC
Original Assignee
Bespak PLC
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 Bespak PLC filed Critical Bespak PLC
Priority to GB08519833A priority Critical patent/GB2178811A/en
Publication of GB8519833D0 publication Critical patent/GB8519833D0/en
Publication of GB2178811A publication Critical patent/GB2178811A/en
Withdrawn legal-status Critical Current

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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
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/10—Tube connectors; Tube couplings
    • A61M39/12—Tube connectors; Tube couplings for joining a flexible tube to a rigid attachment

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  • 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)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

A retaining device 3 secures a resilient catheter 1 upon a male connector 2 of a medical check valve. A raised end portion 4 of the connector is an interference fit within the catheter and the retaining device is tubular and captively located between a locating flange 9 of the connector and a distended catheter portion formed by the catheter being distended so as to fit over the raised end portion. During fitting the device is moved from a disassembled position in which the catheter extends through the device and is fitted onto the connector to an assembled position in which the device is captively located and indents the catheter to provide a secure grip. The device includes a tapered internal surface such that during assembly a progressively narrower portion of the surface contacts the catheter to provide progressive local thinning of the distended portion sufficient to allow the device to pass beyond the distended portion to its captive location. The device enables the catheter to be fitted to the connector without end damage. <IMAGE>

Description

SPECIFICATION Improvements in or relating to catheter valve retaining devices This invention relates to a catheter retaining device for use in securing a tube or catheter of a resilient material upon a male connector and in particular, but not exclusively, for use in coupling a catheter with a male connector of a medical check valve.
Catheter retaining devices are known for use with male connectors having a raised end portion over which the catheter is locally distended in use and wherein the device comprises a tubular sleeve which is an interference fit over the distended catheter portion. The catheter wall is thereby clasped in use between the sleeve and the connector.
Such devices have hitherto been assembled with the connector and catheter by initially forcing the catheter on to the connector so as to be locally distended over the raised end portion. The device is then passed over the connector and pushed on to the catheter to complete the assembly. A disadvantage of such retaining caps is that the final stage in the assembly requires the catheter and device to be pushed together which may push the catheter off of the connector or result in damage to the catheter which is generally of a relatively soft elastomeric material.
According to the present invention a catheter retaining device is disclosed for use in securing a catheter of a resilient material upon a male connector, which connector includes a raised end portion over which the catheter is locally distended when fitted on to the connector, the retaining device being tubular and movable during fitting from a disassembled position, in which position the catheter extends through the device and is fitted on to the connector, to an assembled position in which the device is captively located between a lo cating flange of the connector and the distended catheter portion, and wherein the retaining device has a tapered internal surface such that during assembly a progressively narrower portion of the surface contacts the catheter to provide progressive local thinning of the distended catheter portion sufficient to allow the device to pass beyond the distended portion to its captive location. Since the catheter is resilient it then relaxes to a greater diameter such that the device is held against removal.
Preferably the catheter retaining device includes first and second axially spaced circumferential shoulders whereby the device is positively located in use between the locating flange of the connector and the distended catheter portion. Preferably the shoulder spacing of the device is such that, when positively located in use, the first shoulder abuts against the locating shoulder and there is a clearance between the second flange and the raised end portion of the connector which is less than the catheter wall thickness such that the catheter wall is gripped by indentation.
Advantageously the catheter retaining device has an external shape which includes at least one orienting feature to facilitate sleeve orientation during assembly for the tapered internal surface to provide progressive thinning of the catheter.
In a preferred embodiment an orienting feature comprises a circumferential flange at one end. Alternatively an orientating feature may comprise a diametric slot at one end or an external taper from one end of the device to the other.
In- an alternative embodiment an orienting feature comprises a shoulder at one end formed by including a portion of the external surface having a reduced diameter and conveniently the remaining portion of the external surface may be tapered so as to increase in diameter towards the shoulder.
According to a further aspect of the present invention there is disclosed a method of assembling a catheter retaining cap as hereinbefore disclosed with a male connector and a catheter comprising the steps of passing the catheter end through the device, fitting the catheter on to the connector and urging the device from the disassembled position to the assembled position by pulling the catheter whilst pushing the device. Advantageously a volatile lubricant is applied to the catheter andlor the device so as to reduce friction between the catheter and the device during assembly. Conveniently the lubricant is a suspension of silicon.
An advantage of such an arrangement is that it is less likely that the catheter will be pushed off of the connector and the catheter and device are assembled with the catheter being stressed in tension so that catheter damage is minimised.
According to a still further aspect of the present invention there is disclosed a catheter retaining device as hereinbefore disclosed in combination with a male connector having a raised end portion comprising an annular flange.
Particular embodiments of the invention will now be described by way of example with reference to the accompanying drawings of which: Figure 1 is a sectional view of a catheter retaining device assembled together with a catheter on a male connector, Figure 2 is a plan view of the arrangement of Figure 1 prior to assembly, Figure 3 is a plan view of an alternative catheter retaining device having a tapered external surface with a shoulder at one end, and Figure 4 is a plan view of a further alternative catheter retaining device having a slot at one end.
Referring to Figure 1, a catheter 1 is secured to a male connector 2 of a medical check valve by a retaining device 3. The connector 2 has a raised end portion 4 comprising an annular circumferential flange over which the catheter 1 is an interference fit so as to have a locally distended portion 5.
The retaining device 3 is tubular having an internal surface 6 which is tapered so as to increase in diameter from right to left as illustrated. The device 3 further includes first and second circumferential shoulders 7 and 8 respectively with the first shoulder 7 abutting against a locating flange 9 of the connector 2. There is a clearance between the second shoulder 8 and the raised end portion 4 which is less than the wall thickness of the catheter such that the catheter is indented and positively gripped therebetween.
The exterior of the device 3 includes a circumferential orienting flange 10 at one end to identify to the user the end of the device which should be presented to the catheter during assembly Figure 2 shows the arrangement of Figure 1 immediately prior to the assembly of the device 3 on to the connector 2.
Figure 3 shows an alternative device 20 having similar internal features but a different external shape including a tapered surface 21 and an exter nal shoulder 22 at one end formed by including a portion 35 of the external surface having a reduced diameter.
Figure 4 shows another alternative device 30 having a plain cylindrical exterior and a diametric slot 31 at one end.
The external features of the devices 3,20 and 30 include features which facilitate correct orientation during assembly either by an operator in a manual assembly process or by machinery in an automated process which may for example include a bowl feeder in which a supply of disoriented components is ordered and oriented for automatic feeding by means of a vibrating bowl arrangement.
In use to assemble the catheter 1, connector 2 and device 3 the device is first oriented and fitted loosely on to the catheter, the orientation of the device being such that the internal taper diverges towards the catheter end 11. The end 11 of the catheter is then opened out using a stretching device for example a three pronged expander (not shown) and the connector 2 inserted into the catheter 1 such that the catheter end 11 passes beyond the raised end portion 4 and thereby forms a locally distended catheter portion 5. The stretching device is then withdrawn.
Finally the device 3 is assembled with the connector 2 by pulling the catheter 1 whilst pushing the device so that the device first encounters the distended portion 5 as shown in Figure 2. The first shoulder 7 rides over this distended portion and as the device continues to move from right to left a progressively narrower portion of the internal tapered surface contacts the catheter to provide progressive local thinning of the distended catheter portion. Once the second shoulder 8 has cleared the distended portion 5 the catheter relaxes to a greater diameter and the device is held captive between the locating flange 9 and the now relaxed distended portion 5.
The second shoulder 8 indents the catheter 1 in this position since the clearance between the second shoulder 8 and the raised end portion 4 is less than the local wall thickness of the catheter.
A volatile lubricant may be used to assist assembly, the lubricant being necessarily volatile so as to evaporate after assembly and also must be non toxic. Suitable lubricants are for example a mixture of water and alcohol or preferably a suspension of silicon in a suitable solvent.
In the embodiments illustrated the device is moulded from a plastics material which may be polyamide or polypropylene and the catheter is of an elastomeric material which may be latex rubber, silicone rubber or polyvinyl chloride (PVC).
In a preferred embodiment the external surface of the device carries indicia applied by a printing process.

Claims (14)

1. A catheter retaining device for use in securing a catheter of a resilient material upon a male connector, which connector includes a raised end portion over which the catheter is locally distended when fitted on to the connector, the retaining device being tubular and movable during fitting from a disassembled position, in which position the catheter extends through the device and is fitted on to the connector, to an assembled position in which the device is captively located between a locating flange of the connector and the distended catheter portion, and wherein the retaining device has a tapered internal surface such that during assembly a progressively narrower portion of the surface contacts the catheter to provide progressive local thinning of the distended portion sufficient to allow the device to pass beyond the distended portion to its captive location.
2. A catheter retaining device as claimed in Claim 1 having first and second axially spaced circumferential shoulders whereby the device is positively located in use between the locating flange of the connector and the distended catheter portion.
3. A catheter retaining device as claimed in Claim 2 having a shoulder spacing such that when positively located in use the first shoulder abuts against the locating flange and there is a clearance between the second shoulder and the raised end portion of the connector which is less than the catheter wall thickness such that the catheter wall is gripped by indentation.
4. A catheter retaining device as claimed in any preceding claim wherein the external shape of the device includes at least one orienting feature to facilitate correct orientation during assembly for the tapered internal surface to provide progressive thinning of the catheter.
5. A catheter retaining device as claimed in Claim 4 wherein an orienting feature comprises a circumferential flange at one end.
6. A catheter retaining device as claimed in Claim 4 wherein an orienting feature comprises a diametric slot at one end.
7. A catheter retaining device as claimed in Claim 4 wherein an orienting feature comprises an external taper from one end of the device to the other.
8. A catheter retaining device as claimed in Claim 4 wherein an orienting feature includes a shoulder at one end formed by including a portion of the external surface having a reduced diameter.
9. A catheter retaining device as claimed in Claim 8 wherein the remaining portion of the external surface is tapered so as to increase in diameter towards the shoulder.
10. A method of fitting a tubular retaining de vice as claimed in any preceding claim to secure a catheter upon a connector comprising the steps of passing the catheter end through the device, fitting the catheter on to the connector and urging the device from the disassembled position to the assembled position by pulling the catheter whilst pushing the device.
11. A method as claimed in Claim 10 including the further step of applying a volatile lubricant so as to reduce friction between the catheter and the device during assembly.
12. A method as claimed in Claim 11 wherein the lubricant is a suspension of silicon.
13. A catheter retaining device as claimed in any of Claims 1 to 9 in combination with a male connector wherein the connector includes a raised end portion comprising an annular flange.
14. A catheter retaining device substantially as hereinbefore described with reference to and as shown in Figures 1 and 2 of the accompanying drawings or as modified in Figures 3 or 4.
GB08519833A 1985-08-07 1985-08-07 Catheter valve retaining device Withdrawn GB2178811A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08519833A GB2178811A (en) 1985-08-07 1985-08-07 Catheter valve retaining device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08519833A GB2178811A (en) 1985-08-07 1985-08-07 Catheter valve retaining device

Publications (2)

Publication Number Publication Date
GB8519833D0 GB8519833D0 (en) 1985-09-11
GB2178811A true GB2178811A (en) 1987-02-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB08519833A Withdrawn GB2178811A (en) 1985-08-07 1985-08-07 Catheter valve retaining device

Country Status (1)

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GB (1) GB2178811A (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2201477A (en) * 1987-02-24 1988-09-01 Halkey Roberts Corp Hose clamping sleeve
US5117978A (en) * 1989-02-14 1992-06-02 Medelec, Inc. Sheath for monopolar needle
GB2424940A (en) * 2005-04-08 2006-10-11 Bespak Plc Check valve for catheter apparatus
EP1806527A2 (en) * 2006-01-09 2007-07-11 Tecno Plast Industrietechnik GmbH Hose connection for low pressures
US7744572B2 (en) 1993-03-19 2010-06-29 Venetec International, Inc. Catheter anchoring system
US8052649B2 (en) 2005-09-19 2011-11-08 Venetec International, Inc. Medical tubing securement assembly and methods of use
US8585655B2 (en) 2005-05-23 2013-11-19 Venetec International, Inc. Securement device for I.V. t-connector
US8603022B2 (en) 2008-12-19 2013-12-10 Baxter International Inc. Catheter/fistula needle to bloodline connection assurance device
US8608705B2 (en) 2009-03-04 2013-12-17 C.R. Bard, Inc. Catheter securement device
US9604034B2 (en) 2011-04-21 2017-03-28 C. R. Bard, Inc. Anchoring system
US9694130B2 (en) 2009-10-06 2017-07-04 Venetec International, Inc. Stabilizing device having a snap clamp
US9700700B2 (en) 2010-03-03 2017-07-11 Venetec International, Inc. Medical article with rotatable wings
US9731104B2 (en) 2010-04-23 2017-08-15 Medical Components, Inc. Implantable dual reservoir access port
US9731097B2 (en) 2009-10-06 2017-08-15 Venetec International, Inc. Stabilizing device having a locking collet
US9962524B2 (en) 2011-03-11 2018-05-08 Venetec International, Inc. Medical article securement device
US9993619B2 (en) 2007-07-17 2018-06-12 C. R. Bard, Inc. Securement system for a medical article

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1372649A (en) * 1971-12-30 1974-11-06 Oetiker Hans Connecting arrangement between a hose and a spigot
GB1434117A (en) * 1973-11-10 1976-05-05 Prochaska Crw Chemierohrwerk Method and apparatus for the connection of plastic pipes
GB1562005A (en) * 1976-06-28 1980-03-05 Boeing Co Apparatus and method for joining tube ends
GB2133850A (en) * 1983-01-19 1984-08-01 Plastiers Ltd Pipe coupling

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1372649A (en) * 1971-12-30 1974-11-06 Oetiker Hans Connecting arrangement between a hose and a spigot
GB1434117A (en) * 1973-11-10 1976-05-05 Prochaska Crw Chemierohrwerk Method and apparatus for the connection of plastic pipes
GB1562005A (en) * 1976-06-28 1980-03-05 Boeing Co Apparatus and method for joining tube ends
GB2133850A (en) * 1983-01-19 1984-08-01 Plastiers Ltd Pipe coupling

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4776369A (en) * 1987-02-24 1988-10-11 Halkey-Roberts Corporation Check valve having snap-on clamping sleeve
GB2201477B (en) * 1987-02-24 1990-12-05 Halkey Roberts Corp Hose connection device
GB2201477A (en) * 1987-02-24 1988-09-01 Halkey Roberts Corp Hose clamping sleeve
US5117978A (en) * 1989-02-14 1992-06-02 Medelec, Inc. Sheath for monopolar needle
US7744572B2 (en) 1993-03-19 2010-06-29 Venetec International, Inc. Catheter anchoring system
US7967792B2 (en) 1993-03-19 2011-06-28 Venetec International, Inc. Catheter anchoring system
US7887515B2 (en) 1993-03-19 2011-02-15 Venetec International, Inc. Catheter anchoring system
GB2424940A (en) * 2005-04-08 2006-10-11 Bespak Plc Check valve for catheter apparatus
GB2424940B (en) * 2005-04-08 2007-10-24 Bespak Plc Check valve
US8585655B2 (en) 2005-05-23 2013-11-19 Venetec International, Inc. Securement device for I.V. t-connector
US8052649B2 (en) 2005-09-19 2011-11-08 Venetec International, Inc. Medical tubing securement assembly and methods of use
US8177756B2 (en) 2005-09-19 2012-05-15 Venetec International, Inc. Medical tubing securement assembly and methods of use
US8679067B2 (en) 2005-09-19 2014-03-25 Venetec International, Inc. Medical tubing securement assembly and methods of use
EP1806527A3 (en) * 2006-01-09 2008-01-16 Tecno Plast Industrietechnik GmbH Hose connection for low pressures
EP1806527A2 (en) * 2006-01-09 2007-07-11 Tecno Plast Industrietechnik GmbH Hose connection for low pressures
US9993619B2 (en) 2007-07-17 2018-06-12 C. R. Bard, Inc. Securement system for a medical article
US8603022B2 (en) 2008-12-19 2013-12-10 Baxter International Inc. Catheter/fistula needle to bloodline connection assurance device
US9867925B2 (en) 2008-12-19 2018-01-16 Baxter International Inc. Catheter/fistula needle to bloodline connection assurance device
US8608705B2 (en) 2009-03-04 2013-12-17 C.R. Bard, Inc. Catheter securement device
US9017290B2 (en) 2009-03-04 2015-04-28 C. R. Bard. Inc. Catheter securement device
US11420023B2 (en) 2009-10-06 2022-08-23 Venetec International, Inc. Stabilizing device having a snap clamp
US9694130B2 (en) 2009-10-06 2017-07-04 Venetec International, Inc. Stabilizing device having a snap clamp
US10426928B2 (en) 2009-10-06 2019-10-01 Venetec International, Inc. Stabilizing device having a snap clamp
US9731097B2 (en) 2009-10-06 2017-08-15 Venetec International, Inc. Stabilizing device having a locking collet
US9700700B2 (en) 2010-03-03 2017-07-11 Venetec International, Inc. Medical article with rotatable wings
US10245415B2 (en) 2010-03-03 2019-04-02 Venetec International, Inc. Medical article with rotatable wings
US9731104B2 (en) 2010-04-23 2017-08-15 Medical Components, Inc. Implantable dual reservoir access port
US10485964B2 (en) 2010-04-23 2019-11-26 Medical Components, Inc. Implantable dual reservoir access port
US9962524B2 (en) 2011-03-11 2018-05-08 Venetec International, Inc. Medical article securement device
US9604034B2 (en) 2011-04-21 2017-03-28 C. R. Bard, Inc. Anchoring system

Also Published As

Publication number Publication date
GB8519833D0 (en) 1985-09-11

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