EP0260953A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Device for use in the cannulation of blood vessels
Assignee: Individual
•
Filing: 1987-09-16
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Granted: —
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Expires: 2007-09-16
Abstract
Abstract A device for use in the cannulation of blood vessels comprises a trocar 26 which is positionable within a hollow needle 24. The trocar comprises a support rod 40, an ultrasonic transducer 34 supported at one end of the rod for transmitting and receiving ultrasonic waves and electrical conductors 42 and 48 associated with the rod 40 for transmitting electrical signals to and from the transducer 34.
Inventors
- 👤 Paul G. Yock
- 👤 Alan R. Selfridge
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 05:19
CPC Classifications
A; A61; A61B; A61B8/00; A61B8/12; A61B17/00; A61B17/34; A61B17/3403; A61B8/08; A61B8/0833; A61M; A61M25/00; A61M25/01; A61M25/06; A61M25/0606; A61M5/00; A61M5/42; A61M5/427; A61B2017/3413; A61B8/44; A61B8/4444; A61B8/445
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
65 words
Device for use in the cannulation of blood vessels comprising a trocar (26;56) which is positionable within a hollow needle (12;24;58), the trocar comprising a support rod (40;68), an ultrasonic transducer (34;60;70) supported at one end of the rod (40;68) for transmitting and receiving ultrasonic waves, and electrical conductors (16;32;42;48;74) associated with the rod (40;68) for transmitting electrical signals to and from the transducer (34;60;70).
Claim 2
Dependent Claim
65 words
Device for use in the cannulation of blood vessels comprising a trocar (26;56) which is positionable within a hollow needle (12;24;58), the trocar comprising a support rod (40;68), an ultrasonic transducer (34;60;70) supported at one end of the rod (40;68) for transmitting and receiving ultrasonic waves, and electrical conductors (16;32;42;48;74) associated with the rod (40;68) for transmitting electrical signals to and from the transducer (34;60;70).
Claim 3
Dependent Claim
38 words
Device as claimed in claim 1, and further including a hollow needle (12;45;58) having a sharp end for penetrating tissue and a syringe portion (14;28) detachably attached to the needle, the trocar (26;56) being positioned within the needle.
Claim 4
Dependent Claim
57 words
Device as claimed in claim 1 or 2, wherein the electrical conductors include a wire (42;74) which extends through the support rod (40;68) and is in contact with one surface of the transducer (32;70), and a metal conductor (48;74) which is on the surface of the rod and is in contact with another surface of the transducer.
Claim 5
Dependent Claim
43 words
Device as claimed in claim 1 or 2, wherein the electrical conductors include two wires (74) which extend through the support rod (68) with one wire contacting one surface of the transducer (70) and the other wire containing another surface of the transducer.
Claim 6
Dependent Claim
23 words
Device as claimed in any preceding claim, wherein the transducer (32;70) has metal contacts (44,50) on its surfaces contacting the electrical conductors (42,48;74).
Claim 7
Dependent Claim
31 words
Device as claimed in any preceding claim, wherein the transducer (34;60;70) is attached to the one end of the support rod (40;68) by means (46;62;72) which includes an ultrasonic damping material.
Claim 8
Dependent Claim
26 words
Device as claimed in claims 2 and 3, wherein the metal conductor (48;74) contacts the needle (12;45;58) whereby the needle comprises a portion of the conductor.
Claim 9
Dependent Claim
22 words
Device as claimed in any preceding claim, wherein the support rod (40;68) includes a passage (64) for the back flow of fluid.
Claim 10
Dependent Claim
24 words
Device as claimed in claims 2 and 3, wherein the support rod (40;68) and the metal conductor (48;74) are spaced from the needle (12;45;58)
References Cited (Backward Citations)
No citation records indexed.
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