NZ204204A - Catheter retainer:hinged limb section with hooked end - Google Patents

Description

2042 r 4- Priority ^ Complete Specification Filed: fl.'.'YS1. Class: . .. • l. | Publication Date: .9. SEP- )t|84 P.O. Journal, Mo: .. - I •: ,:C!\S Ol KegU-i~> \1/ "-u2 — <_or<\9 Specification has been ante-dated; to fLJX\es§£*i 19-S1-J ;5* •' -w Initials ■ NEW ZEALAND PATENTS ACT, 195 3 ^?M%\ • OX ^May, Wt9SS \ . / ^ /// Jl9BO, Divided from New Zealand Patent Application No: 196452 COMPLETE SPECIFICATION Date: 9 March 19 81 "CATHETER RETAINER" We, KINGSDOWN MEDICAL CONSULTANTS LIMITED, a corporation of Great Britain, of Blackfriars House, 19 New Bridge Street, London, England. hereby declare the invention for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:- - 1 - (followed by page la) 2 -CtJ-2 0 4 CATHETERRETAINER Catheters and tubing of various type.and size often have to be retained in a patient for extended periods of time. This invention is directed to a catheter retainer which can accommodate different size catheters and tubes 10 and securely hold them in position. The catheter retainer of this invention is easy to manipulate.

Steer et al. in British Patent 1,571,657 disclose a two piece coupling system designed to retain an ostomy pouch around a stomal 15 opening.

Chen in United States Patent 3,339,546 disclose medical grade adhesives having one or more water soluble or water swellable hydrocolloids dispersed in a viscous elastic binder. 2 04 2 I, In our New Zealand Patent Specification No. 1964 52 there is described and claimed a catheter retai ner cranprising a pad of adhesive dressing material having one surface for contacting the skin of a wearer and a central opening, a coupling member having a flange perman-..ently.....af fixed ■ to-the-other surface of said adhesive pad around said opening, said coupling member also including an upstanding rim and a resilient flexible skirt projecting inwardly from the periphery of said rim, and a catheter retainer insert dimensioned to fit within said coupling member rim and be held in place by said resilient skirt, said catheter retainer comprising a member of synthetic plastics material having a central portion wholly or partly defined by a pair of resilient catheter-gripping jaws, and a resilient catch member for holding the jaws in their relatively closed position.

The present specification, however, comprises A catheter retainer capable of holding catheters of varying external diameter in position, said retainer being formed, from a single piece of plastics material and comprising a disc having a marginal rim portion and a central portion which includes an arcuate hole that merges with a catheter slot, a limb section, and a base pad, one end of said limb being connected to said base pad by .an integral hinge thereby enabling said limb to oscillate about said hinge in the plane of the disc, the other end of said limb having a hook which cooperates with a series of notches on said base pad, said catheter slot positioned between opposing walls of said limb and said base pad with a series of catheter-gripping jaws on these opposing limb and base pad walls. 2 042 : Preferably said limb and said base pad have upstanding pegs which allow finger manipulation of said limb relative to saide base pad In a further aspect the present invention consists in a catheter retainer capable of holding catheters of varying external diameter in position, said retainer comprising an adhesive dressing one surface of which adheres the retainer to the skin, said dressing having a central opening, a coupling member having a flange permanently affixed to the other surface of said dressing around said central opening, said coupling member also having an upstanding rim and a resilient flexible skirt projecting inwardly from the periphery of sid rim, and a catheter retainer insert formed from a single piece of plastics material comprising a disc having a marginal rim portion and a central portion, said marginal rim portion dimensioned to fit between said coupling member rim and said dressing and be held in place by said resilient skirt, said disc central portion ■including an arcuate hole that merges with a catheter slot, a limb section, and a base pad, one end of said limb being connected to said base pad by an integral hinge thereby enabling said limb to oscillate about said hinge in the plane of the disc, the other end of said limb having a hook which cooperates with a series of notches on said base pad, said catheter slot positioned between opposing walls of said limb and said base pad with a series of catheter-gripping jaws on these opposing limb and base pad walls.

Preferably said limb and said base pad have upstanding pegs the catheter retainer of Claim 3 wherein said limb and said base pad have upstanding pegs which allow finger manipulation of said limb relative ■ to said base pad. 2042 0 .. Brief Description of the Drawings Figure 1 is a side elevation view of 'one example ,of catheter retainer according to the invention; Figure 2 is a front view of the catheter retainer illustrated in Figure 1. :• The catheter retainer illustrated in Figures 1 and 2 includes an adhesive pad or dressing 10 having a surface 12 for engaging the skin of the patient surrounding the region where the catheter" is to be inserted. The adhesive pad or dressing 10 is of medical grade and preferably consists of one or more"- water soluble or .swellable hydrocolloids dispersed in a viscous elastic binder as taught by Chen in United States Patent 3,339,546. The pad 10 has an opposed. surface 16 to which a layer of polymeric material 18 such as polyethylene, polyvinyl chloride, etc., is suitably bonded. A hole 14 is provided in the pad or cut in the pad according to the size needed.

An adhesive pad-having a polymeric film bonded to one side suitable for use as part of . the catheter retainer of this invention is commercially available under the trademark Stomahesive.

As illustrated in the figures, a coupling' member 20, preferably of circular form, is secured to layer 18. The coupling member can be'affixed to layer 18 by use of. adhesives, heat welding, or other suitable means. The coupling member 20 includes a flange 22, a rim 24, and resilient x2» 04-2 0 4- flexible inwardly directed skirt or strip 26 which extends around the rim. The coupling member 20 may be injection molded from any suitable synthetic plastics material. Such coupling member is taught 5 by Steer et al. in British Patent 1,571,657.

A catheter gripping disc 28 is illustrated in the figures. The disc 28 includes a marginal rim portion 44 of a diameter and axial thickness chosen to fit snugly with rim 24 and be trapped 10 between the layer 18 and the skirt 26. The disc 28 is held in place by the resilience of the skirt 26.

This disc 28 is preferably molded from a single piece of plastics material, for example 15 high-density polyvinyl chloride or polypropylene, and is made in a special shape to define jaws 32, 34 between which a catheter 36 or other tube can be clamped. As seen in Figure 2, the disc 28 has a central portion 38 that includes an arcuate hole 40 -20 that mergers with a catheter slot 42, a first limb section 44, and a base pad 46. The limb 4 4 is connected to pad 4 6 by an integral hinge 50, the limb 44 thereby being enabled to oscillate about the hinge 50 in the plane of the disc. The other end 25 of the limb has a hook-52 which co-operates with a series of hooks or notches 54 on the base pad 46. Jaws 34 on the limb 44 are disposed opposite to jaws 32 on the base pad 46 and a catheter 36, in use, is gripped between the jaws when the hook 52 3Q is engaged with an appropriate one of the notches 54.

TO42 Q4 Although only two notches 54 are illustrated, obviously more notches may be provided. In this way a number of different catheters of different external diameters may be held in position.

This disc 28 has three upstanding pegs 56, 58 and 60 to allow manipulation of the limb 44 relative to the base pad 46. The pegs 56 and 58 are squeezed towards each other using for example the thumb and first finger in order to grip a 10 catheter between the jaws; in this operation the resilience of the hook 52 causes it to tend to engage one of the notches or hooks 54. In order to release the catheter, the peg 60 is lifted (i.e. pulled away from the peg 58) so disengaging 12 the hook 54 from its associated notch and allowing the limb 44 to spring back in a generally anticlockwise direction as seen in Figure 2.

The configuration of marginal rim 44 is chosen in accordance with the configuration of 2o coupling member 20. Thus, it is preferred that both be circular. Similarly, the configuration of central portion 38 can be varied but it- is preferred. that it be circular and extend upwards from rim 44.

The disc 28 can be sold separately from 25 the pad - coupling 20 combination,, and can readily be snapped into the coupling thereof when it is desired.to convert a pad-coupling combination from ostomy bag use to catheter retaining use. xn2 042 C In an alternative embodiment of the invention, the disc embodying catheter-gripping jaws may be carried by any suitable support and may be secured to the body of the user in any convenient way, 5 e.g., by adhesive.

Accordingly the present invention resides in a disc of resilient plastics material comprising a pair of jaws capable of gripping a catheter and holdable together by a catch and notch arrangement, 10 or its mechanical equivalent.

It will be appreciated that variations may be made in the particular shapes and materials herein disclosed, without departing from the invention. In this specification the term 15 "catheter retainer" is intended to include a retainer for retaining in position tubing which extends into a human or an animal body.

Claims (3)

1. — 8 — 2 042 0 WHAf |AVE CLAIM ISi A catheter retainer capable of holding catheters of varying external diameter in position, said retainer being formed, from a single piece of plastics material and comprising a disc having a marginal rim portion and a central portion which includes an arcuate hole that merges with a catheter slot, a limb section, and a base pad, one end of said limbAbeing connected to said base pad by .an integral. hinge thereby enabling said limbAto oscillate about said hinge in the plane of the disc, the other end 4eet( pi* of said limb^having a hook which cooperates with a series of notches on said base pad, said catheter slot positioned between opposing walls of said 1 imb and said base pad with a series of catheter-gripping jaws on these opposing limb^and base pad walls.
2. 2 ,,The catheter retainer of Claim 1 wherein Reditu* said limb^and said base pad have upstanding pegs which ieebh** allow finger manipulation of said limb^relative to said base pad.
3. 3. A catheter retainer capable of holding catheters of varying external diameter in position, said retainer comprising an adhesive dressing one surface of which adheres the retainer to the skin, ; said dressing having a central opening, a coupling member having a flange permanently affixed to the other surface of said dressing around said central opening, said coupling member also having an upstanding rim and a resilient flexible skirt projecting inwardly from the periphery of rim, and a catheter retainer insert formed from a single piece of plastics material comprising a disc having a marginal, rim portion and a central portion, said marginal rim -9- 204204 portion dimensioned to fit between said coupling member rim and said dressing and be held in place by said resilient skirt, said disc central portion including an arcuate hole that merges, with a catheter . J P & S slot, a limb section, and a base pad, one end of said ' limbing connected to said base pad by an integral - hinge thereby enabling said limb^to oscillate about said hinge in the plane of the disc, the other end of said limb^havmg a hook which cooperates with a series of notches on said base pad, said catheter slot posi-tioned between opposing walls of said limb^and said base pad with a series of catheter-gripping jaws on these opposing limb^ancl base pad walls. 4. i p o c ,T.he catheter retainer of Claim 3 wherein 1said limb^ana said base pad have upstanding pegs which allow finger manipulation of said limtvfrelative - A to said base pad. 5 * A catheter retainer as claimed in any one ' of the preceding Claims substantially as hereinbefore described with reference to either one or both of the accompanying drawings. ,, i/ ■ /KU.( A. J. PARK / S° aG.^,.t3 r-OR TH* APPLICANTS