US5314406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endoscopic electrosurgical suction-irrigation instrument
Assignee: Boston Scientific Miami Corp
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Filing: 1992-10-09
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Granted: 1994-05-24
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Expires: 2012-10-09
Abstract
Abstract An endoscopic electrosurgical suction-irrigation instrument with insertable probes and attachments is disclosed. The instrument has a fluid chamber sealed at its proximal end with a slit valve for receiving the probes and connected at its distal end to a cannula through which the inserted probes extend. The fluid chamber is selectively provided with suction and/or irrigation and includes an electrical contact for supplying voltage to an inserted electrosurgical probe. Depending on the probe configuration suction and/or irrigation is provided in an annular space between the probe and the cannula or through the probe. Valves, connectors and switches for use with the instrument are also disclosed.
Inventors
- 👤 Juan J. Arias
- 👤 Thomas O. Bales
- 👤 Jurgen A. Kortenbach
- 👤 Dana W. Ryan
- 👤 Charles R. Slater
- 👤 Kevin W. Smith
- 👤 Matthew S. Solar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:33
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3203; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1442; A61B18/1482; A61M; A61M1/00; A61M1/71; A61M1/74; A61M1/741; A61M1/7413; A61M1/7415; A61M3/00; A61M3/02; A61M3/0204; A61M3/0208; A61M3/022; A61M3/0233; A61M5/00; A61M5/14; A61M5/1414; A61M5/1418; A61B10/00; A61B10/02; A61B18/148; A61B17/3209; A61B17/3211; A61B2017/32113; A61B2018/0091; A61B2018/00916; A61B2018/00958; A61M1/77; A61M1/772; A61M2205/00; A61M2205/60; A61M2205/6063; A61M2205/6081
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
225 words
An endoscopic suction/irrigation instrument capable of use with a probe means, comprising: a) a fluid chamber having a proximal end and an open distal end with a separate suction port and a separate irrigation port located therebetween and in fluid communication with said fluid chamber; b) a hollow cannula communicating with said distal end of said fluid chamber, said hollow cannula and said fluid chamber forming a fluid flow path; c) a first automatic valve means covering said proximal end of said fluid chamber, said first automatic valve means for permitting the probe means to be inserted through said automatic valve means and into and through said fluid chamber and for preventing leakage of fluid out said proximal end of said fluid chamber when the probe means is in place in said fluid chamber in a first mode, and said first automatic valve means for automatically closing said proximal end of said fluid chamber when the probe means is withdrawn from said fluid chamber in a second mode and for preventing leakage of fluid out said proximal end of said fluid chamber in said second mode; d) a suction valve means for selectively coupling a suction tube to said fluid chamber via said suction port; and e) an irrigation valve means for selectively coupling an irrigation tube to said fluid chamber via said irrigation port.
Claim 2
Dependent Claim
225 words
An endoscopic suction/irrigation instrument capable of use with a probe means, comprising: a) a fluid chamber having a proximal end and an open distal end with a separate suction port and a separate irrigation port located therebetween and in fluid communication with said fluid chamber; b) a hollow cannula communicating with said distal end of said fluid chamber, said hollow cannula and said fluid chamber forming a fluid flow path; c) a first automatic valve means covering said proximal end of said fluid chamber, said first automatic valve means for permitting the probe means to be inserted through said automatic valve means and into and through said fluid chamber and for preventing leakage of fluid out said proximal end of said fluid chamber when the probe means is in place in said fluid chamber in a first mode, and said first automatic valve means for automatically closing said proximal end of said fluid chamber when the probe means is withdrawn from said fluid chamber in a second mode and for preventing leakage of fluid out said proximal end of said fluid chamber in said second mode; d) a suction valve means for selectively coupling a suction tube to said fluid chamber via said suction port; and e) an irrigation valve means for selectively coupling an irrigation tube to said fluid chamber via said irrigation port.
Claim 3
Dependent Claim
18 words
An endoscopic irrigation instrument according to claim 1, wherein: said first automatic valve means comprises a slit valve.
Claim 4
Dependent Claim
48 words
An endoscopic instrument according to claim 2, further comprising: f) an electrical contact coupled to said hollow cannula; and g) electrical switch means coupled to said electrical contact and coupled to an electrical source, said electrical switch means for selectively coupling said electrical source to said electrical contact.
Claim 5
Dependent Claim
23 words
An endoscopic instrument according to claim 2, wherein: said suction port is located distally relative to said irrigation port along said fluid chamber.
Claim 6
Dependent Claim
27 words
An endoscopic irrigation instrument according to claim 2, wherein: said first automatic valve means further comprises an elastomeric sealing gasket located proximally relative to said slit valve.
Claim 7
Dependent Claim
33 words
An endoscopic instrument according to claim 2, further comprising: f) an electrical contact coupled to said hollow cannula; and g) electrical switch means for selectively coupling an electrical source to said electrical contact.
Claim 8
Dependent Claim
26 words
An endoscopic irrigation instrument according to claim 2, wherein: said first automatic valve means further comprises an elastomeric O-ring located proximally relative to said slit valve.
Claim 9
Dependent Claim
48 words
An endoscopic instrument according to claim 1, further comprising: f) an electrical contact coupled to said hollow cannula; and g) electrical switch means coupled to said electrical contact and coupled to an electrical source, said electrical switch means for selectively coupling said electrical source to said electrical contact.
Claim 10
Dependent Claim
128 words
An endoscopic instrument according to claim 8, further comprising: h) a shell housing said fluid chamber, said automatic valve means, said suction valve means, said irrigation valve means, a proximal end of said cannula, said electrical contact, and said electrical switch means, wherein said electrical source includes means for supplying a cutting cautery signal and a coagulating cautery signal, and said electrical switch means is a three position rocker switch having an actuation means extending out of said shell, said rocker switch being movable from a first position in which no voltage signal is coupled from said electrical source to said electrical contact, to either of a second and third position in which a cutting cautery signal and a coagulating cautery signal are coupled to said electrical contact.
Claim 11
Dependent Claim
32 words
An endoscopic instrument according to claim 8, further comprising: said probe means, wherein said probe means comprises an electrocautery means with contact means for receiving an electrical signal via said electrical contact.
Claim 12
Dependent Claim
23 words
An endoscopic instrument according to claim 1, wherein: said suction port is located distally relative to said irrigation port along said fluid chamber.
Claim 13
Dependent Claim
33 words
An endoscopic instrument according to claim 1, wherein: said suction valve means and said irrigation valve means each comprise a pinch valve for respectively pinching off said suction tube and said irrigation tube.
Claim 14
Dependent Claim
80 words
An endoscopic instrument according to claim 1, wherein: said suction valve means comprises a suction inlet coupled to said suction tube and a suction outlet coupled to said suction port, wherein said suction valve means selectively seals said suction inlet from said suction outlet, said irrigation valve means comprises an irrigation inlet coupled to said irrigation tube and an irrigation outlet coupled to said irrigation port, wherein said irrigation valve means selectively seals said irrigation inlet from said irrigation outlet.
Claim 15
Dependent Claim
37 words
An endoscopic instrument according to claim 1, further comprising: h) a pistol shaped body housing said fluid chamber, said automatic valve means, said suction valve means, said irrigation valve means, and a proximal end of said cannula.
Claim 16
Dependent Claim
72 words
An endoscopic instrument according to claim 1, further comprising: h) first spring biased trigger actuation means coupled to said suction valve means, wherein said first spring biased trigger actuating means biases said suction valve means into a normally closed position; and i) second spring biased trigger actuation means coupled to said irrigation valve means, wherein said second spring biased trigger actuating means biases said irrigation valve means into a normally closed position.
Claim 17
Dependent Claim
37 words
An endoscopic instrument according to claim 15, further comprising: j) a pistol shaped body housing said fluid chamber, said automatic valve means, said suction valve means, said irrigation valve means, and a proximal end of said cannula.
Claim 18
Dependent Claim
66 words
An endoscopic instrument according to claim 1, further comprising: said probe means, wherein said probe means comprises a trocar means having a sharp distal end and insertable through said first automatic valve means, said fluid chamber, and said cannula such that said sharp distal end extends beyond the distal end of said cannula, said trocar means for making an incision through which said instrument will penetrate.
Claim 19
Dependent Claim
54 words
An endoscopic instrument according to claim 1, wherein: said first automatic valve means, said open distal end of said chamber, and said hollow cannula are all located along a longitudinal axis such that a substantially straight rigid probe can be extended through said first automatic valve means, said chamber, and through said hollow cannula.
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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) | 1997-05-23 | 1997-11-22 | 1998-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-23 | 2001-11-22 | 2002-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-23 | 2005-11-22 | 2006-05-24 | $7700.00 | Window Closed / Lapsed |