US5370623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter with protective cover and method of catheterization
Assignee: Individual
•
Filing: 1993-03-01
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Granted: 1994-12-06
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Expires: 2013-03-01
Abstract
Abstract A catheterization system for embedment in a patient includes a sharp edged needle at the proximal end portion of the catheter. A protective sheath is received about the needle for relative slidable movement thereon between a first position wherein the sharp edge of the needle extends beyond the protective sheath and a second position wherein the blunt leading proximal edge of the protective sheath extends beyond and covers the sharp edge of the needle.
Inventors
- 👤 Jeffry W. Kreamer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:18
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/06; A61M25/0612; A61M25/0643
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
102 words
A method of catheterization of a patient, comprising the steps of: (a) inserting into the patient a first tubular member having a proximal end portion with a sharp edge; (b) providing a second, coaxial tubular member which is received about said first tubular member and which includes a proximal end portion having a blunt edge; (c) advancing said second tubular member from a first position wherein said sharp edge extends beyond said second tubular member and a second position wherein said second tubular member covers said sharp edge; and (d) means for holding said second, coaxial tubular member in said second position.
Claim 2
Independent Claim
102 words
A method of catheterization of a patient, comprising the steps of: (a) inserting into the patient a first tubular member having a proximal end portion with a sharp edge; (b) providing a second, coaxial tubular member which is received about said first tubular member and which includes a proximal end portion having a blunt edge; (c) advancing said second tubular member from a first position wherein said sharp edge extends beyond said second tubular member and a second position wherein said second tubular member covers said sharp edge; and (d) means for holding said second, coaxial tubular member in said second position.
Claim 3
Dependent Claim
25 words
A method as defined in claim 1, further comprising a step of biasing said second tubular member from said first position toward said second position.
Claim 4
Dependent Claim
30 words
A method as defined in claim 2, further comprising a step of releasably returning said second member to said first position thereby preventing movement by said biasing step until released.
Claim 5
Dependent Claim
30 words
A method as defined in claim 1, further comprising a step of maneuvering the position of said first tubular member inside the patient following advancement of said second tubular member.
Claim 6
Independent Claim
130 words
A method of catheterization of a patient, comprising the steps of: (a) inserting into the patient a first tubular member having a proximal end portion with a sharp edge; (b) providing a second, coaxial tubular member which is received about said first tubular member and which includes a proximal end portion having a blunt edge; (c) advancing said second tubular member from a first position wherein said sharp edge extends beyond said second tubular member and to a second position wherein said second tubular member covers said sharp edge; (d) maneuvering said first tubular member inside the patient; (e) retracting said second tubular member to expose said sharp edge; (f) maneuvering said first tubular member inside the patient; and (g) advancing said second tubular member to cover said sharp edge.
Claim 7
Independent Claim
130 words
A method of catheterization of a patient, comprising the steps of: (a) inserting into the patient a first tubular member having a proximal end portion with a sharp edge; (b) providing a second, coaxial tubular member which is received about said first tubular member and which includes a proximal end portion having a blunt edge; (c) advancing said second tubular member from a first position wherein said sharp edge extends beyond said second tubular member and to a second position wherein said second tubular member covers said sharp edge; (d) maneuvering said first tubular member inside the patient; (e) retracting said second tubular member to expose said sharp edge; (f) maneuvering said first tubular member inside the patient; and (g) advancing said second tubular member to cover said sharp edge.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-12-05 | 1998-06-06 | 1998-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-05 | 2002-06-06 | 2002-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-05 | 2006-06-06 | 2006-12-06 | $7700.00 | Window Closed / Lapsed |