US3653388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter insertion trocar
Assignee: Battelle Development Corp
•
Filing: 1969-12-04
•
Granted: 1972-04-04
•
Expires: 1989-12-04
Abstract
Abstract A trocar for insertion of catheters into a body wall is described. The trocar comprises a bivalved type tapered tip with a handle attached to each portion of the tapered tip, a tubular member adapted to encircle the rearward portion of the tapered tip and a stylet which is adapted to fit inside both the tubular member and the bivalved tapered tip. This device permits insertion of a flexible tubing catheter into a body member wall for prolonged intermittent access to a cavity beyond the body wall. This device is particularly useful in insertion of cuffed catheters into the abdominal wall.
Inventors
- 👤 Heinrich A M Tenckhoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:38
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/34; A61B17/3417; A61M; A61M25/00; A61M25/01; A61M25/06; A61M25/0662; A61M25/0668; A61B17/3415; A61B17/3468
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
122 words
A trocar for insertion of cuffed catheters into a body wall incision comprising: a tapered tip segmented axially into at least two elements, said tip having a first axial bore therethrough to receive a forward tubular portion of a cuffed catheter and a cylindrical rearward portion having a second larger bore axially aligned with the first bore to receive the cuffed portion of said cuffed catheter; a tubular member adapted to encircle said cylindrical rearward portion of said tapeRed tip and to releasably hold the elements of said tip in cylindrical relationship; and, a stylet adapted to slidably engage both bores of said tip, said stylet having a sharpened forward portion extending beyond said tapered tip when said stylet is inserted therein.
Claim 2
Dependent Claim
122 words
A trocar for insertion of cuffed catheters into a body wall incision comprising: a tapered tip segmented axially into at least two elements, said tip having a first axial bore therethrough to receive a forward tubular portion of a cuffed catheter and a cylindrical rearward portion having a second larger bore axially aligned with the first bore to receive the cuffed portion of said cuffed catheter; a tubular member adapted to encircle said cylindrical rearward portion of said tapeRed tip and to releasably hold the elements of said tip in cylindrical relationship; and, a stylet adapted to slidably engage both bores of said tip, said stylet having a sharpened forward portion extending beyond said tapered tip when said stylet is inserted therein.
Claim 3
Dependent Claim
22 words
The apparatus of claim 1 having a manipulator handle extending rearwardly from each of said elements to facilitate removal of said elements.
Claim 4
Dependent Claim
111 words
A trocar for insertion of a cuffed catheter tube into a body wall incision comprising: a hollow, rigid insertion tip, said tip being divided axially into at least two parts and having a first axial bore to receive a forward tubular portion of a cuffed catheter and a cylindrical rearward portion having a second larger bore axially aligned with the first bore to receive the cuff of said cuffed catheter and adapted to prevent passage of said cuff into said first axial bore; grasping means attached to each of said parts, and; means to maintain each of said parts in cylindrical relationship, said means permitting separation and removal of said parts.
Claim 5
Dependent Claim
111 words
A trocar for insertion of a cuffed catheter tube into a body wall incision comprising: a hollow, rigid insertion tip, said tip being divided axially into at least two parts and having a first axial bore to receive a forward tubular portion of a cuffed catheter and a cylindrical rearward portion having a second larger bore axially aligned with the first bore to receive the cuff of said cuffed catheter and adapted to prevent passage of said cuff into said first axial bore; grasping means attached to each of said parts, and; means to maintain each of said parts in cylindrical relationship, said means permitting separation and removal of said parts.
Claim 6
Dependent Claim
17 words
The apparatus of claim 3 having a removable pointed stylet slidably engaging both bores of said tip.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |