GB2178811A - Catheter valve retaining device - Google Patents
Catheter valve retaining device Download PDFInfo
- 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- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A61M39/12—Tube connectors; Tube couplings for joining a flexible tube to a rigid attachment
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- 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.
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 |
Family
ID=10583445
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)
Country | Link |
---|---|
GB (1) | GB2178811A (en) |
Cited By (16)
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)
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 |
-
1985
- 1985-08-07 GB GB08519833A patent/GB2178811A/en not_active Withdrawn
Patent Citations (4)
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)
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |