Patent US5387196A successfully refreshed from Google Patents.
US5387196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cannula assembly having conductive cannula
Assignee: United States Surgical Corp
•
Filing: 1992-05-19
•
Granted: 1995-02-07
•
Expires: 2012-05-19
Abstract
Abstract A conductive cannula assembly is disclosed to dissipate possible, accumulated electrical charges through body tissue. The cannula assembly includes cannula housing means and cannula means formed of a material having an electrical conductivity value which is at least fifty percent the conductivity value of silver. The invention also includes cannula assembly accessories formed of a material having an electrical conductivity value which is at least fifty percent the conductivity value of silver. The invention further provides a method for guiding endoscopic instruments into body tissue utilizing the cannula assembly and the cannula assembly accessories of the present invention.
Inventors
- 👤 David T. Green
- 👤 H. Jonathan Tovey
- 👤 Robert C. Smith
- 👤 Henry Bolanos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:35
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/34; A61B17/3417; A61B17/3421; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1485; A61B2017/0046; A61B2017/00473; A61B2017/348; A61B2017/3482; A61B2017/3484; A61B2018/00053; A61B2018/00059; A61B2018/00071; A61B2018/00077; Y; Y10; Y10S; Y10S128/00; Y10S128/908
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
186 words
A cannula assembly, which comprises: a) cannula housing means having a first opening formed at a distal end thereof and second opening formed at a proximal end thereof, for receiving endoscopic instruments; b) cannula means for receiving the endoscopic instrument, said cannula means having a proximal end engaged with said first opening of said cannula housing means and an outer surface portion adapted to engage body tissue, wherein at least said outer surface portion of said cannula means is formed of a material having an electrical conductivity value which is at least fifty percent the conductivity value of silver so as to facilitate dissipation of electrical energy thereon through the body tissue; and c) tissue gripping means associated with said cannula means for securing said cannula assembly within the body tissue, said tissue gripping means having an exterior wall formed at least in part of a material having an electrical conductivity value which is at least fifty percent the conductivity value of silver, said exterior wall being configured to engage the body tissue so as to facilitate dissipation of electrical energy thereon through the body tissue.
Claim 2
Dependent Claim
186 words
A cannula assembly, which comprises: a) cannula housing means having a first opening formed at a distal end thereof and second opening formed at a proximal end thereof, for receiving endoscopic instruments; b) cannula means for receiving the endoscopic instrument, said cannula means having a proximal end engaged with said first opening of said cannula housing means and an outer surface portion adapted to engage body tissue, wherein at least said outer surface portion of said cannula means is formed of a material having an electrical conductivity value which is at least fifty percent the conductivity value of silver so as to facilitate dissipation of electrical energy thereon through the body tissue; and c) tissue gripping means associated with said cannula means for securing said cannula assembly within the body tissue, said tissue gripping means having an exterior wall formed at least in part of a material having an electrical conductivity value which is at least fifty percent the conductivity value of silver, said exterior wall being configured to engage the body tissue so as to facilitate dissipation of electrical energy thereon through the body tissue.
Claim 3
Dependent Claim
20 words
The cannula assembly according to claim 1, wherein said tissue gripping means is formed at least in part of aluminum.
Claim 4
Dependent Claim
20 words
The cannula assembly according to claim 1, further comprising means for latching said tissue gripping means in a deployed position.
Claim 5
Dependent Claim
19 words
The cannula assembly according to claim 1, wherein said tissue gripping means is releasably attached to said cannula means.
Claim 6
Dependent Claim
65 words
The cannula assembly according to claim 1, wherein said latching means includes at least one latching receptor positioned at a proximal end of said tubular sleeve, and at least one latching member cooperatively positioned at a proximal end of said cannula means for cooperation with said at least one latching member to latch said tissue gripping means in either a deployed or a non-deployed position.
Claim 7
Dependent Claim
76 words
The cannula assembly according to claim 1, wherein said tissue gripping means comprises: a) a tubular sleeve for coaxially engaging said cannula means, and formed of a material having an electrical conductivity value which is at least fifty percent the conductivity value of silver; and b) a flexible member having a tubular member positioned radially about a distal end of said tubular sleeve, and having a plurality of articulating arm members positioned adjacent said tubular member.
Claim 8
Dependent Claim
24 words
The cannula assembly according to claim 6, wherein said tissue gripping means further includes means for securing said tubular member to said tubular sleeve.
Claim 9
Dependent Claim
40 words
The cannula assembly according to claim 7, wherein said securing means comprises a plurality of protrusions positioned about an interior circumferential surface portion of said tubular member which engage corresponding openings formed in said distal end of said tubular sleeve.
Claim 10
Dependent Claim
56 words
The cannula assembly according to claim 7, wherein said securing means comprises a circumferential ring positioned about an interior circumference of said tubular member and a corresponding circumferential channel extending about an exterior circumferential surface portion of said distal end of said tubular sleeve, such that said tubular member is rotatably secured to said tubular sleeve.
Claim 11
Dependent Claim
63 words
The cannula assembly according to claim 6, wherein said tissue gripping means is releasably secured to said cannula by positioning at least one resilient tab at a distal end of said flexible member and positioning at least one locking receptor at a distal end of said cannula means, such that said at least one tab cooperatively engages said at least one locking receptor.
Claim 12
Dependent Claim
21 words
The cannula assembly according to claim 6, wherein said tubular sleeve includes a gripping flange positioned at a proximal end thereof.
Claim 13
Dependent Claim
17 words
The cannula assembly according to claim 6, wherein said flexible member is fabricated of a plastic material.
Claim 14
Dependent Claim
40 words
The cannula assembly according to claim 6, wherein said articulating arm members include a distal arm portion and a proximal arm portion joined by said at least one hinge, said distal portion having a greater length than said proximal portion.
Claim 15
Dependent Claim
29 words
The cannula assembly according to claim 13, wherein said proximal arm portion is substantially perpendicular to said tubular sleeve when said articulating arm members are in said deployed position.
References Cited (Backward Citations)
US365969A
Cited
US318535A
Cited
US695470A
Cited
US781763A
Cited
US1380447A
Cited
US1621159A
Cited
US1719428A
Cited
US1870942A
Cited
US1828986A
Cited
US1863057A
Cited
FR748666A
Cited
US2185927A
Cited
US2256942A
Cited
US2649092A
Cited
US2556783A
Cited
US2707957A
Cited
US3039468A
Cited
US3108595A
Cited
US3253594A
Cited
US3241554A
Cited
US3261357A
Cited
US3397699A
Cited
US3490457A
Cited
US3831814A
Cited
US3688773A
Cited
US3692029A
Cited
US3713447A
Cited
US3817251A
Cited
US4043338A
Cited
US3994287A
Cited
US3938530A
Cited
US3946741A
Cited
US4077412A
Cited
US4083370A
Cited
US4202337A
Cited
US4177814A
Cited
US4253463A
Cited
US4535773A
Cited
US4521938A
Cited
US4601710A
Cited
US4601710B1
Cited
US4627838A
Cited
US4571241A
Cited
US4608965A
Cited
US4758219A
Cited
US4634421A
Cited
US4654030A
Cited
US4902280A
Cited
US5030206A
Cited
US4808163A
Cited
US4943280A
Cited
EP0350291A2
Cited
US4921484A
Cited
US4995868A
Cited
US5002557A
Cited
US4973301A
Cited
US5009643A
Cited
US4986810A
Cited
US5122122A
Cited
EP0432363A2
Cited
US4973305A
Cited
US5197971A
Cited
US5192298A
Cited
EP0508453A1
Cited
EP0537738A2
Cited
EP0537758A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-02-06 | 1998-08-08 | 1999-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-02-06 | 2002-08-08 | 2003-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-02-06 | 2006-08-08 | 2007-02-07 | $7700.00 | Window Closed / Lapsed |