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US 8,685,032 B2Granted
Pressure sensing vertebroplasty extension tube
AssigneeCook Medical Technologies LLC
InventorJeffry S. Melsheimer
Life of this patent
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Abstract
Disclosed in certain embodiments is a pressure sensing tube for transporting a material under pressure through a lumen and a pressure sensitive material associated with the tube and operable to change in appearance in response to a physical change in the tube caused by pressure within the lumen. A method of manufacturing a pressure sensing tube is also disclosed.
Claims20
An injection assembly comprising:
- an injection apparatus constructed and arranged to eject a flowable therapeutic liquid;
- a pressure sensing extension tube comprising:
- a proximal end removably coupled to the injection apparatus;
- a distal end;
- an inner tube defining a first lumen, wherein the inner tube is deformable in response to a change in pressure in the first lumen and wherein the first lumen is constructed and arranged to convey the flowable therapeutic liquid from the proximal end to the distal end through the first lumen;
- an outer member;
- and
- a pressure-indicating film positioned between the inner tube and the outer member, wherein the pressure-indicating film is adapted to display a differing visual appearance when the inner tube deforms to compress the pressure-indicating film between the inner tube and the outer member.
5 more elements
A method of manufacturing a pressure sensing extension tube comprising:
- positioning a pressure-indicating film on the outer surface of an extension tube having a first lumen;
- and
- covering the pressure-indicating film and at least a portion of the extension tube with an outer member, wherein the pressure-indicating film is restrained between the outer surface of the extension tube and the inner surface of the translucent outer member and wherein the pressure-indicating film is adapted to permanently change its visual appearance when compressed between the extension tube and the outer member.
A pressure indicating extension tube comprising:
- an extension tube defining a lumen and including a first degree of deformability such that a change in pressure in the lumen changes the shape of the extension tube;
- a pressure-indicating film external of the extension tube;
- and
- a translucent thermoplastic heat-shrink tube shrunk over the pressure-indicating film, wherein the pressure-indicating film is adapted to permanently change its color when compressed between the heat-shrink tube and the extension tube.
1 more element
Dependencies are inferred from the claim text.