US3765420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Eccentric locking device for surgical drainage members
Assignee: Kendall Co
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Filing: 1971-12-16
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Granted: 1973-10-16
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Expires: 1991-12-16
Abstract
Abstract A locking guard device for regulating the penetrating depth of a rigid or semi-rigid hollow shaft member used for draining body cavities, such as a hypodermic needle, catheter, and the like, which guard is mounted on the shaft member through a channel in each of a male and female elements of the guard, the channel in each element being concentric with respect to each other but eccentric with respect to the true centers of the elements. Rotation of an element with respect to the other locks the pair of elements on the shaft of the member.
Inventors
- 👤 T Felczak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:57
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/02; A61B; A61B17/00; A61B17/32; A61M5/00; A61M5/178; A61M5/31; A61M5/32; A61B17/34; A61B2017/347; A61B2017/348; A61B2017/3492; A61M2025/0213; A61M2025/0233; A61M2025/028
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
225 words
An apparatus for penetrating a body cavity comprising: a member with an elongated shaft and a lockable guard member mounted thereon, said member comprising a pair of guard elements; one of said guard elements having a male projecting portion and the other of said guard elements having a counterpart female cavity portion into which the male portion is positioned; said elements with their respective male and female portions being rotatable with respect to each other, each of said elements having a substantially circular channel therethrough; the channels in both elements being concentric with each other when the elements are in one position of orientation providing a passageway therein through which the shaft of said member is inserted for mounting said guard on said shaft; and the substantially circular channels in both elements being eccentric with respect to the true centers of said male projection and female cavity portions; the guard elements being restricted from complete rotation about the true centers of said portions by the shaft in said channels; whereby a rotating force applied to one of said guard elements causes the elements to rotate about the position of eccentricity to cause frictional engagement between the shaft and the channels, and whereby frictional engagement between the outer wall of the male portion and the inner wall of the female portion secures said portions against displacement.
Claim 2
Independent Claim
225 words
An apparatus for penetrating a body cavity comprising: a member with an elongated shaft and a lockable guard member mounted thereon, said member comprising a pair of guard elements; one of said guard elements having a male projecting portion and the other of said guard elements having a counterpart female cavity portion into which the male portion is positioned; said elements with their respective male and female portions being rotatable with respect to each other, each of said elements having a substantially circular channel therethrough; the channels in both elements being concentric with each other when the elements are in one position of orientation providing a passageway therein through which the shaft of said member is inserted for mounting said guard on said shaft; and the substantially circular channels in both elements being eccentric with respect to the true centers of said male projection and female cavity portions; the guard elements being restricted from complete rotation about the true centers of said portions by the shaft in said channels; whereby a rotating force applied to one of said guard elements causes the elements to rotate about the position of eccentricity to cause frictional engagement between the shaft and the channels, and whereby frictional engagement between the outer wall of the male portion and the inner wall of the female portion secures said portions against displacement.
Claim 3
Dependent Claim
41 words
An apparatus in accordance with claim 1 wherein said male projecting portion has a ridge thereon and said female cavity has a groove therein corresponding to said ridge into which said ridge is positioned when the guard elements are coupled together.
Claim 4
Dependent Claim
21 words
An apparatus in accordance with claim 1 wherein said guard element having the female cavity portion terminates in a flange-like surface.
Claim 5
Dependent Claim
17 words
An apparatus in accordance with claim 3 wherein said flange-like surface is coated with a pressure-sensitive adhesive.
Claim 6
Dependent Claim
15 words
An apparatus in accordance with claim 3 wherein said flange-like surface has straps extending therefrom.
Claim 7
Dependent Claim
20 words
An apparatus in accordance with claim 1 wherein said guard member includes means for attaching said member to the body.
References Cited (Backward Citations)
US506039A
Cited
US843906A
Cited
FR936797A
Cited
US2693182A
Cited
US2952256A
Cited
US3241554A
Cited
US3487837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |