US5496280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trocar valve assembly
Assignee: Applied Medical Resources Corp
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Filing: 1994-05-19
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Granted: 1996-03-05
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Expires: 2014-05-19
Abstract
Abstract A trocar having a working channel extending along an axis between a distal end and a proximal end includes a cannula at the distal end and a housing at the proximal end which define a working channel of the trocar. A valve disposed in the working channel separates the trocar into regions proximal of the valve and regions distal of the valve. The valve includes elastomeric means which form a first seal that is openably closable across the working channel. A wall of the valve extends radially outwardly of the elastomeric means and forms a second seal with the housing. The trocar also includes means for defining a passage extending from regions exterior of the trocar through the regions proximal of the valve and into the regions distal of the valve. Valve means disposed across this passage controls the administration of fluid through the passage and into the working channel of the cannula.
Inventors
- 👤 Frans Vandenbroek
- 👤 Vincent C. Tangherlini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:31
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/06; A61B; A61B17/00; A61B17/34; A61B17/3462; A61B17/3498; A61B17/3474; A61B2017/0023; A61B2017/0046; A61B2017/348; A61B2017/3482; A61B2017/349; A61B90/00; A61B90/08; A61B2090/0813; A61M2039/0036; A61M2039/0072; A61M2039/062; A61M2039/0626; A61M2039/0633; A61M2039/0646
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
313 words
A trocar having a working channel extending along an axis between a distal end and proximal end, the trocar comprising: a cannula having a tubular configuration and a wall which defines the working channel at the distal end of the trocar; a housing disposed in fixed relationship to the cannula and defining the working channel at the proximal end of the trocar; a valve disposed in the working channel and separating the channel into regions proximal of the valve and regions distal of the valve; elastomeric means included in the valve and forming a first seal which is openably closable across the working channel; a wall included in the valve and extending radially outwardly of the elastomeric means; portions of the housing engaging the valve wall and forming with the valve wall a second seal which is disposed generally outwardly of the first seal; means for defining a passage extending from regions exterior of the trocar, through the regions proximal of the valve, and into the regions distal of the valve; a housing inlet included in the passage defining means, the housing inlet defining a first section of the passage which extends through the housing to provide fluid communication between the regions exterior of the trocar and the regions proximal of the valve; valve means disposed across the housing inlet for openably closing the first section of the passage to thereby control the administration of a fluid from the regions exterior of the trocar, through the passage and into the working channel of the cannula; portions of the valve being included in the passage defining means and defining a second section of the passage between the first seal and the second seal; and a manifold included in the passage defining means and defining a third section of the passage between the first section of the passage and the second section of the passage.
Claim 2
Dependent Claim
313 words
A trocar having a working channel extending along an axis between a distal end and proximal end, the trocar comprising: a cannula having a tubular configuration and a wall which defines the working channel at the distal end of the trocar; a housing disposed in fixed relationship to the cannula and defining the working channel at the proximal end of the trocar; a valve disposed in the working channel and separating the channel into regions proximal of the valve and regions distal of the valve; elastomeric means included in the valve and forming a first seal which is openably closable across the working channel; a wall included in the valve and extending radially outwardly of the elastomeric means; portions of the housing engaging the valve wall and forming with the valve wall a second seal which is disposed generally outwardly of the first seal; means for defining a passage extending from regions exterior of the trocar, through the regions proximal of the valve, and into the regions distal of the valve; a housing inlet included in the passage defining means, the housing inlet defining a first section of the passage which extends through the housing to provide fluid communication between the regions exterior of the trocar and the regions proximal of the valve; valve means disposed across the housing inlet for openably closing the first section of the passage to thereby control the administration of a fluid from the regions exterior of the trocar, through the passage and into the working channel of the cannula; portions of the valve being included in the passage defining means and defining a second section of the passage between the first seal and the second seal; and a manifold included in the passage defining means and defining a third section of the passage between the first section of the passage and the second section of the passage.
Claim 3
Dependent Claim
46 words
The trocar recited in claim 1 wherein the valve wall includes an annular flange extending transverse to the working channel and the portions of the valve define the second section of the passage in the form of at least one hole extending through the annular flange.
Claim 4
Dependent Claim
49 words
The trocar recite in claim 2 wherein the manifold includes: a multiplicity of walls defining a fenestration of windows, at least one of the windows being disposed in fluid communication with the inlet of the housing and the at least one hole in the annular flange of the valve.
Claim 5
Dependent Claim
35 words
The trocar recited in claim 3 wherein the annular flange is sandwiched between the portions of the housing and the walls of the manifold to create the second seal between the valve and the housing.
Claim 6
Dependent Claim
15 words
The trocar recited in claim 1 wherein the valve is a double duck bill valve.
Claim 7
Dependent Claim
42 words
The trocar recited in claim 3 wherein the manifold further comprises: means defining a distribution chamber in fluid communication with each of the windows in the fenestration of windows and in fluid communication with each of the holes in the annular flange.
Claim 8
Dependent Claim
211 words
A trocar having a working channel extending along an axis between a proximal end and a distal end, comprising: a cannula having a first axis and a tubular configuration with a wall which extends distally from a proximal end of the cannula to define the working channel at the distal end of the trocar; a housing having a second axis and a wall which extends proximally from a distal end of the housing to at least partially define the working channel at the proximal end of the trocar; at least one seal disposed in the housing across the working channel and proximally of the distal end of the housing; one of the cannula and the seal housing being formed of a sterilizable metal material so that it may be reusable in a plurality of medical procedures; the other of the cannula and the seal housing being formed of a disposable plastic material; and means disposed at the proximal end of the cannula and the distal end of the housing for releasably joining the cannula to the housing with the first axis aligned with the second axis to define the working channel of the trocar, said joining means being adapted to permit easy attachment and detachment of the cannula and the housing.
Claim 9
Dependent Claim
211 words
A trocar having a working channel extending along an axis between a proximal end and a distal end, comprising: a cannula having a first axis and a tubular configuration with a wall which extends distally from a proximal end of the cannula to define the working channel at the distal end of the trocar; a housing having a second axis and a wall which extends proximally from a distal end of the housing to at least partially define the working channel at the proximal end of the trocar; at least one seal disposed in the housing across the working channel and proximally of the distal end of the housing; one of the cannula and the seal housing being formed of a sterilizable metal material so that it may be reusable in a plurality of medical procedures; the other of the cannula and the seal housing being formed of a disposable plastic material; and means disposed at the proximal end of the cannula and the distal end of the housing for releasably joining the cannula to the housing with the first axis aligned with the second axis to define the working channel of the trocar, said joining means being adapted to permit easy attachment and detachment of the cannula and the housing.
Claim 10
Dependent Claim
128 words
The trocar recited in claim 7 wherein the joining means includes a bayonet connector comprising: at least one tab disposed at one of the proximal end of the cannula and the distal end of the housing; means defining at least one recess at the other of the proximal end of the cannula and the distal end of the housing, the at least one recess being sized and configured to receive the at least one tab and to removably fix the cannula to the housing; and means disposed at the other of the proximal end of the cannula and the distal end of the housing for slidingly engaging the at least one tab and for guiding the at least one tab toward the means defining at least one recess.
Claim 11
Dependent Claim
40 words
The trocar recited in claim 8 wherein the at least one tab is disposed at the proximal end of the cannula and the means for defining the at least one recess is disposed at the distal end of the housing.
Claim 12
Dependent Claim
69 words
The trocar recited in claim 9 wherein the engaging means comprises a ramp extending from a distal position on the housing radially proximally to the means defining the at least one recess, the ramp being configured to receive the at least one tab and to slidingly engage the at least one tab and to guide the at least one tab toward the means defining the at least one recess.
Claim 13
Dependent Claim
36 words
The trocar recited in claim 8 wherein the at least one tab includes at least two tabs diametrically opposed at the one of the distal end of the housing and the proximal end of the cannula.
Claim 14
Dependent Claim
21 words
The trocar recited in claim 9 wherein the at least one tab extends radially outwardly of the wall of the cannula.
Claim 15
Dependent Claim
27 words
The trocar recited in claim 7, wherein the cannula is formed of a sterilizable metal material and the seal housing is formed of a disposable plastic material.
Claim 16
Dependent Claim
31 words
The trocar recited in claim 13, wherein the entire seal housing, including the components enclosed thereby, is adapted to be detached from the cannula and disposed of after a single use.
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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) | 1999-03-05 | 1999-09-04 | 2000-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-03-05 | 2003-09-04 | 2004-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-03-05 | 2007-09-04 | 2008-03-05 | $7700.00 | Window Closed / Lapsed |