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US 7,654,963 B2Granted
Device for visually indicating a blood pressure
AssigneeRadi Medical Systems AB
InventorsPer Egnelöv, Fredrik Preinitz, James Fuchs, Dan Åkerfeldt, Lars Tenerz
Life of this patent
Estimating the term…
Abstract
An indicator device for visually indicating a pressure of blood inside a blood vessel includes: a body, the body comprising a duct extending in the body and having a sealed proximal end; a distal end portion adapted to be positioned inside the blood vessel and including a liquid inlet opening in fluid communication with the duct; and a window including an at least semi-transparent section configured to enable visual observation of blood entering into the duct via the inlet opening when the inlet opening is located inside the blood vessel.
Claims18
An indicator device for visually indicating a pressure of blood inside a blood vessel, comprising:
- a body comprising a passage passing through the body, the body further comprising a duct extending in the body and having a hemostatically sealed blood accommodating chamber;
- an insertion tube comprising a distal end adapted to be positioned inside the blood vessel and comprising a fluid communication pathway between an uncovered liquid inlet opening near a distal end of the insertion tube and the duct, wherein the inlet opening is formed on an outer surface of the insertion tube, the insertion tube further comprising an opening at an extreme end of the distal end portion;
- a window comprising an at least semi-transparent section configured to enable visual observation of blood entering into the duct via the inlet opening when the inlet opening is located inside the blood vessel;
- and
- an elongated member;
- wherein the fluid communication pathway is formed between the insertion tube and the elongated member;
- and wherein the body and the insertion tube are adapted to permit the elongated member to be threaded in a substantially straight path there through between the distal end of the insertion tube and a proximal end of the body and wherein an outer dimension of the elongated member is substantially equal to an inner dimension of the insertion tube at the distal end of the insertion tube and said outer dimension and said inner dimension are configured such that flow of blood between said outer dimension and said inner dimension is prevented when the elongated member is inserted into the insertion tube.
4 more elements
An indicator system for visually indicating a pressure of blood inside a blood vessel, comprising:
- a body comprising a passage passing through the body, the body further comprising a duct extending in the body and having a hemostatically sealed blood accommodating chamber;
- an insertion tube comprising a distal end portion adapted to be positioned inside the blood vessel and comprising a fluid communication pathway between an uncovered liquid inlet opening near a distal end of the insertion tube and the duct, further comprising an opening at an extreme end of the distal end portion of the insertion tube, wherein the inlet opening is formed on an outer surface of the insertion tube;
- and
- a window comprising an at least semi-transparent section configured to enable visual observation of blood entering into the duct via the inlet opening when the inlet opening is located inside the blood vessel;
- and
- an elongated member;
- wherein the fluid communication pathway is formed between the insertion tube and the elongated member;
- and wherein the body and the insertion tube are adapted to permit the elongated member to be threaded in a substantially straight path there through between the distal end of the insertion tube and a proximal end of the body such that the elongated member projects distally past the extreme end of the distal end portion and wherein an outer dimension of the elongated member is substantially equal to an inner dimension of the insertion tube at the distal end of the insertion tube and said outer dimension and said inner dimension are configured such that flow of blood between said outer dimension and said inner dimension is prevented when the elongated member is inserted into the insertion tube.
5 more elements
A method for visually indicating a pressure of blood inside a blood vessel, comprising:
- (1) providing an indicator system comprising
- a body, the body comprising a passage passing through the body and a duct extending in the body and having a blood accommodating chamber,
- an insertion tube comprising a distal end portion adapted to be positioned inside the blood vessel and comprising a fluid communication pathway between a liquid inlet opening near a distal end of the insertion tube and the duct, wherein the inlet opening is formed on an outer surface of the insertion tube, the insertion tube further comprising an opening at an extreme end of the distal end portion,
- a window in the form of an at least semi-transparent section configured to enable visual observation of blood entering into the duct via the inlet opening when the inlet opening is located inside the blood vessel, and
- an elongated member,
- wherein the fluid communication pathway is formed between the insertion tube and the elongated member;
- and wherein the body and the insertion tube are adapted to permit the elongated member to be threaded in a substantially straight path there through between a proximal end of the body and the distal end of the insertion tube to plug the opening at the extreme end of the distal end portion;
- (2) positioning said distal end portion inside the blood vessel;
- and
- (3) indicating said pressure.
7 more elements
An indicator device for visually indicating a pressure of blood inside a blood vessel, comprising:
- a body, the body comprising:
- a duct extending in the body and having a blood accommodating chamber at a hemostatically sealed proximal end;
- a distal end portion adapted to be positioned inside the blood vessel and comprising a liquid inlet opening in fluid communication with the duct;
- and
- a window comprising an at least semi-transparent section configured to enable visual observation of blood entering into the duct via the inlet opening when the inlet opening is located inside the blood vessel;
- wherein the duct opens into the chamber via an aperture having a spill-over edge, the aperture being located at a level above a bottom surface of the blood accommodating chamber, whereby return flow of blood back into the duct is prevented;
- wherein the blood accommodating chamber and the duct are dimensioned such that a counter-pressure therein when blood enters will cause a blood meniscus at a lowest possible systolic pressure to be located within the window;
- wherein the blood accommodating chamber and the duct are dimensioned such that a counter-pressure therein when blood enters will cause a blood meniscus at the lowest possible systolic pressure to be located approximately at the spill-over edge.
5 more elements
An indicator system for visually indicating a pressure of blood inside a blood vessel, comprising:
- a body comprising a passage passing through the body, the body further comprising a duct extending in the body and having a hemostatically sealed blood accommodating chamber;
- an insertion tube comprising a distal end portion adapted to be positioned inside the blood vessel and comprising a fluid communication pathway between an uncovered liquid inlet opening near a distal end of the insertion tube and the duct, the insertion tube further comprising an opening at the extreme end of the distal end portion;
- and
- a window comprising an at least semi-transparent section configured to enable visual observation of blood entering into the duct via the inlet opening when the inlet opening is located inside the blood vessel;
- and
- an elongated member;
- and wherein the passage and the fluid communication pathway are adapted to permit the elongated member to be threaded in a substantially straight path there through between a distal end of the insertion tube and a proximal end of the body such that the elongated member projects distally past the extreme end of the distal end portion,
- wherein the blood accommodating chamber and the duct are dimensioned such that a counter-pressure therein when blood enters will cause a blood meniscus at a lowest possible systolic pressure to be located within the window.
5 more elements
An indicator system for visually indicating a pressure of blood inside a blood vessel, comprising:
- a body comprising a passage passing through the body, the body further comprising a duct extending in the body and having a hemostatically sealed blood accommodating chamber;
- an insertion tube comprising a distal end portion adapted to be positioned inside the blood vessel and comprising a fluid communication pathway between an uncovered liquid inlet opening near a distal end of the insertion tube and the duct, wherein the inlet opening is formed on an outer surface of the insertion tube, the insertion tube further comprising an opening at an extreme end of the distal end portion;
- a window comprising an at least semi-transparent section configured to enable visual observation of blood entering into the duct via the inlet opening when the inlet opening is located inside the blood vessel;
- and
- an elongated member;
- wherein the fluid communication pathway is formed between the insertion tube and the elongated member;
- and wherein the body and the insertion tube are adapted to permit the elongated member to be threaded in a substantially straight path there through between the distal end of the insertion tube and a proximal end of the body;
- wherein the elongated member comprises a guide rod and wherein an outer dimension of the guide rod is substantially equal to an inner dimension of the insertion tube at the distal end of the insertion tube and said outer dimension and said inner dimension are configured such that flow of blood between said outer dimension and said inner dimension is prevented when the guide rod is inserted into the insertion tube.
5 more elements
An indicator system for visually indicating a pressure of blood inside a blood vessel, comprising:
- a body comprising a passage passing through the body, the body further comprising a duct extending in the body and having a hemostatically sealed blood accommodating chamber;
- an insertion tube comprising a distal end portion adapted to be positioned inside the blood vessel and comprising a fluid communication pathway between an uncovered liquid inlet opening near a distal end of the insertion tube and the duct, wherein the inlet opening is formed on an outer surface of the insertion tube, the insertion tube further comprising an opening at an extreme end of the distal end portion;
- a window comprising an at least semi-transparent section configured to enable visual observation of blood entering into the duct via the inlet opening when the inlet opening is located inside the blood vessel;
- and
- an elongated member;
- wherein the fluid communication pathway is formed between the insertion tube and the elongated member;
- and wherein the body and the insertion tube are adapted to permit the elongated member to be threaded in a substantially straight path there through between the distal end of the insertion tube and a proximal end of the body and wherein an outer dimension of the elongated member is substantially equal to an inner dimension of the insertion tube at the distal end of the insertion tube and said outer dimension and said inner dimension are configured such that flow of blood between said outer dimension and said inner dimension is prevented when the elongated member is inserted into the insertion tube;
- wherein the elongated member comprises a dilator.
5 more elements
Dependencies are inferred from the claim text.