Patent US4636346A successfully refreshed from Google Patents.
Patent EP0331318A1 successfully refreshed from Google Patents.
EP0331318A1
Expired / Lapsed
EP
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A catheter assembly
Assignee: Individual
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Filing: 1989-02-17
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Granted: —
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Expires: 2009-02-17
Abstract
Abstract The catheter assembly (10) employs a catheter unit (11), a needle unit (12) and a guide wire unit (13) which has a guide wire (22) located within the hollow needle (18) of the needle unit (12) in the retracted position of the guide wire (13). The guide wire (22) is initially spaced about three to six millimeters from the distal end of the hollow needle (18) and can be inserted into a vessel over a distance of about one-half inch. The needle unit (12) has a flashback chamber (20) which is sealed by the guide wire unit (13) to prevent outflow of blood.
Inventors
- 👤 Vincent L. Vaillancourt
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 23:12
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/06; A61M25/0693; A61M25/065; A61M25/0067; A61M25/0074; A61M2025/0079
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
107 words
A catheter assembly comprising a catheter unit (11) including a catheter (16); a needle unit (12) removably mounted in said catheter unit (11) and including a hollow needle (18) extending coaxially of and within said catheter (16) to a point distally beyond said catheter (16); and a guide wire unit (13) having a guide wire (22) mounted in said needle unit (12) for movement between a retracted position and an extended position characterized in that said guide wire (22) has a distal end concentrically within a distal portion of said hollow needle (18) in said retracted position and out of said needle (18) in said extended position.
Claim 2
Dependent Claim
107 words
A catheter assembly comprising a catheter unit (11) including a catheter (16); a needle unit (12) removably mounted in said catheter unit (11) and including a hollow needle (18) extending coaxially of and within said catheter (16) to a point distally beyond said catheter (16); and a guide wire unit (13) having a guide wire (22) mounted in said needle unit (12) for movement between a retracted position and an extended position characterized in that said guide wire (22) has a distal end concentrically within a distal portion of said hollow needle (18) in said retracted position and out of said needle (18) in said extended position.
Claim 3
Dependent Claim
41 words
A catheter assembly as set forth in claim 1 characterized in that said needle (18) has a lumen of predetermined diameter and said guide wire (22) is of a smaller diameter to provide a passage therebetween for a flow of blood.
Claim 4
Dependent Claim
28 words
A catheter assembly as set forth in claim 2 characterized in that said guide wire (22) has a diameter of up to eighty percent of said lumen diameter.
Claim 5
Dependent Claim
38 words
A catheter assembly as set forth in any of claims 1 to 3 characterized in that said guide wire (22) has a thickened portion for sealing in a proximal end of said needle (18) in said extended position.
Claim 6
Dependent Claim
85 words
A catheter assembly as set forth in any of claims 1 to 4 characterized in that said needle unit (12) includes a sleeve (19) defining a flashback chamber (20) in communication with said needle (18) and said wire guide unit (12) includes a hub (23) having a proximal end of said guide wire (22) secured therein and a sleeve (24) extending distally from said hub (23) and slidably within said needle unit sleeve (19) to maintain said flashback chamber (20) in sealed relation proximally thereof.
Claim 7
Dependent Claim
26 words
A catheter assembly as set forth in claim characterized in that said sleeves (19, 24) are radially spaced from each other to define a gap therebetween.
Claim 8
Dependent Claim
26 words
A catheter assembly as set forth in claim 6 characterized in having a vent (25) in one of said sleeves (19, 24) for venting air therefrom.
Claim 9
Dependent Claim
34 words
A catheter assembly as set forth in any of claims 1 to 7 characterized in that said wire unit (13) includes a collar (31) for abutting said needle unit (12) in said extended position.
Claim 10
Dependent Claim
29 words
A catheter assembly as set forth in any of claims 1 to 8 characterized in that said wire unit (13) includes a finger-grip portion (32) at a proximal end.
Claim 11
Dependent Claim
29 words
A catheter assembly as set forth in any of claims 1 to 9 characterized in that said wire (22) has a diameter of from 0.012 inches to 0.020 inches.
References Cited (Backward Citations)
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