US5743891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Subcutaneous safety catheter assembly
Assignee: ACT Medical Inc
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Filing: 1996-10-25
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Granted: 1998-04-28
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Expires: 2016-10-25
Abstract
Abstract A subcutaneous safety catheter assembly includes a flexible catheter having an inner wall including a hollow stiffening member which is stiff in the longitudinal direction and flexible laterally; a needle having a sharp point at one end and a grip at the other and being adapted to being disposed in the hollow stiffening member with the sharp point extending beyond the distal end of the member; and a needle guard at the proximal end of the member for securely engaging the needle and shielding the sharp point of the needle upon its withdrawal from the catheter.
Inventors
- 👤 M. Joshua Tolkoff
- 👤 Fernando Alvarez de Toledo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:08
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/06; A61M5/00; A61M5/178; A61M5/31; A61M5/32; A61M5/3205; A61M5/321; A61M5/3243; A61M5/3273; A61M5/14; A61M5/158; A61M2005/1581; A61M2025/0098; A61M39/00; A61M39/02; A61M39/0208
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
98 words
A subcutaneous safety catheter assembly comprising: a flexible catheter having an inner wall including a hollow stiffening member which is stiff in the longitudinal direction and flexible laterally; a needle having a sharp point at one end and a grip at the other end adapted to being disposed in said hollow stiffening member with the sharp point extending beyond the distal end of said member; and needle guard means at the proximal end of said catheter for securely engaging said needle and shielding the sharp point of said needle automatically upon and after its withdrawal from said catheter.
Claim 2
Dependent Claim
98 words
A subcutaneous safety catheter assembly comprising: a flexible catheter having an inner wall including a hollow stiffening member which is stiff in the longitudinal direction and flexible laterally; a needle having a sharp point at one end and a grip at the other end adapted to being disposed in said hollow stiffening member with the sharp point extending beyond the distal end of said member; and needle guard means at the proximal end of said catheter for securely engaging said needle and shielding the sharp point of said needle automatically upon and after its withdrawal from said catheter.
Claim 3
Dependent Claim
17 words
The subcutaneous safety catheter assembly of claim 1 in which said stiffening member has an interrupted wall.
Claim 4
Dependent Claim
17 words
The subcutaneous safety catheter assembly of claim 2 in which said stiffening member is a corrugated tube.
Claim 5
Dependent Claim
17 words
The subcutaneous safety catheter assembly of claim 2 in which said stiffening member is a pleated tube.
Claim 6
Dependent Claim
17 words
The subcutaneous safety catheter assembly of claim 2 in which said stiffening member is a braided tube.
Claim 7
Dependent Claim
24 words
The subcutaneous safety catheter assembly of claim 2 in which said stiffening member is a tube having a plurality of longitudinally spaced semi-circular gaps.
Claim 8
Dependent Claim
22 words
The subcutaneous safety catheter assembly of claim 6 in which said gaps extend circumferentially, perpendicular to the longitudinal axis of said tube.
Claim 9
Dependent Claim
23 words
The subcutaneous safety catheter assembly of claim 6 in which said flexible catheter includes an outer wall including a sheath surrounding said member.
Claim 10
Dependent Claim
29 words
The assembly of claim 1 in which said needle guard means includes means for irremovably locking the guard about the needle upon and after its withdrawal from the catheter.
References Cited (Backward Citations)
US4368730A
Cited
US4571241A
Cited
US4863442A
Cited
US5125909A
Cited
US5180376A
Cited
US5607407A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-04-27 | 2001-10-27 | 2002-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-04-27 | 2005-10-27 | 2006-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-04-27 | 2009-10-27 | 2010-04-28 | $7700.00 | Window Closed / Lapsed |