GB2078114A
Expired / Lapsed
GB
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Dilator
Assignee: Sherwood Medical Co
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Filing: 1981-06-19
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Granted: —
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Expires: 2001-06-19
Abstract
Abstract A dilator is formed from an elongated tube (12) having a longitudinally extending hollow bore (14) therethrough, a connector at one end for connection to a fluid supply, and a terminator (18) at the other end carrying an inflatable, inelastic, multi-lobed casing (20) secured at the proximal and distal ends, respectively, of the terminator for inflation through the hollow bore of the tube. A cup-shaped flange (30) at the proximal end of the terminator surrounds the proximal attachment of the casing and positions the maximum diameter of the casing at the termination of the rim of the flange. A multi-lobed construction of the casing provides a wrinkle-free surface when the casing is deflated. <IMAGE>
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
GB
Data Source
google_patents
Last Synchronized
2026-10-23 01:52
CPC Classifications
A; A61; A61M; A61M29/00; A61M29/02
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
87 words
An inflatable dilator including an elongate member with a bore in at least part of its length, a substantially inelastic inflatable thin walled casing surrounding the member and sealingly fixed thereto at each end, the interior of the casing being in com
munication with the bore, the casing, when inflated,
presenting a central section of substantially constant cross section and end sections tapering towards its
ends, and stop means on said member effective as a stop on insertion of the dilator into an orifice to be dilated.
Claim 2
Dependent Claim
87 words
An inflatable dilator including an elongate member with a bore in at least part of its length, a substantially inelastic inflatable thin walled casing surrounding the member and sealingly fixed thereto at each end, the interior of the casing being in com
munication with the bore, the casing, when inflated,
presenting a central section of substantially constant cross section and end sections tapering towards its
ends, and stop means on said member effective as a stop on insertion of the dilator into an orifice to be dilated.
Claim 3
Dependent Claim
32 words
A dilator according to claim 1, wherein said stop means is a cup surrounding the member with
its open side facing the casing and the end of the member intended for insertion.
Claim 4
Dependent Claim
23 words
A dilator according to claim 2, wherein one end of the casing is fixed to the member at a position within the cup.
Claim 5
Dependent Claim
33 words
A dilator according to claim 3, wherein one end of the central section of the casing is in the region ofthe open end of the cup in the axial sense of the member.
Claim 6
Dependent Claim
16 words
A dilator according to claim 1, wherein the stop means is a flange on the member.
Claim 7
Dependent Claim
17 words
A dilator according to claim 2,3,4 or 5 wherein the stop means is discontinuous round the member.
Claim 8
Dependent Claim
19 words
A dilator according to any preceding claim, wherein the casing has a multi-lobal cross section in said central section.
Claim 9
Dependent Claim
12 words
A dilator according to claim 7, wherein the multi-lobal section is tri-lobal.
Claim 10
Dependent Claim
63 words
A dilator according to any preceding claim, wherein the end of the member for insertion is blunted and has, adjacent thereto, a radial step substantially equivalent to the thickness of the material of the casing on which the adjacent end of the casing is secured so as to provide a substantially continuous outer surface to the device in the region of the securement.
Claim 11
Dependent Claim
27 words
A dilator according to any preceding claim, wherein said member includes a tubular part carrying said stop means and a rod which carries the tip for insertion.
Claim 12
Dependent Claim
30 words
A dilator according to claim 10, wherein the rod blocks the end of the bore in the tubular part which has a side port to the interior of the casing.
Claim 13
Dependent Claim
41 words
A dilator according to claim 10 or 11, wherein the tubular part carries the or a flange, and the or a cup is on the flange and the cup has a rearward extension to receive the end of a connecting tube.
Claim 14
Dependent Claim
15 words
A dilator according to claim 12 with a connecting tube received in the rearward extension.
Claim 15
Dependent Claim
20 words
An inflatable dilator constructed and arranged substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
Claim 16
Dependent Claim
20 words
An inflatable dilator constructed and arranged substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
References Cited (Backward Citations)
No citation records indexed.
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