US6117150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic tissue dissector with exhaust system
Assignee: CLAYMAN RALPH V MD
•
Filing: 1998-07-14
•
Granted: 2000-09-12
•
Expires: 2018-07-14
Abstract
Abstract A pneumatic tissue dissector 10 useful for cutting or dissecting living tissue during endoscopic or laparoscopic procedures includes a dissector tip 16 for exuding a flow of pressurized gas, an inlet arrangement 24 for controlling the flow of gas from the tip 16, and an exhaust system 30 for exhausting the gas exuded from the tip 16. The exhaust system includes an inlet 32 adjacent to the tip 16 and an outlet spaced from the inlet 32. The outlet 34 is operable in coordination with the inlet arrangement 24 and is capable of exhausting a flow of gas about equal to that exuded by the tip 16, ensuring that the pressure in the cavity in which the procedure is performed does not increase or fluctuate. The flow of pressurized gas from the tip 16 is preferably compatible with an insufflation cavity pressure of no more than about 15 mm Hg, and the inlet arrangement 24 preferably supplies gas to the tip 16 at a pressure of no more than about 50 psi. The dissector 10 preferably further includes a laparoscopic introducer sheath 68 which is shorter in length than the distance between the inlet 32 and the outlet 34.
Inventors
- 👤 Edward D. Pingleton
- 👤 Gary L. Butler
- 👤 Neal E. Fearnot
- 👤 Donald R. Hollinger
- 👤 Timothy G. Vendrely
- 👤 Ralph V. Clayman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:19
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/00234; A61B17/32; A61B17/3203; A61B90/00; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B2017/00535; A61B2017/00544; A61B17/28; A61B17/29; A61B2017/2901; A61B2017/2905; A61B2017/320044; A61B2017/32035; A61B90/30; A61B2090/306; A61B2217/00; A61B2217/002; A61B2217/005; A61B2217/007; A61M; A61M1/00; A61M1/71; A61M1/77; A61M1/774; A61M11/00; A61M11/06
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
54 words
A pneumatic tissue dissector comprising: a dissector tip (16) for exuding a flow of pressurized gas; an inlet arrangement (24) for controlling the flow of pressurized gas from the dissector tip; and an exhaust system (30) comprising an inlet (32) adjacent to the dissector tip and an outlet (34) operable with the inlet arrangement.
Claim 2
Dependent Claim
54 words
A pneumatic tissue dissector comprising: a dissector tip (16) for exuding a flow of pressurized gas; an inlet arrangement (24) for controlling the flow of pressurized gas from the dissector tip; and an exhaust system (30) comprising an inlet (32) adjacent to the dissector tip and an outlet (34) operable with the inlet arrangement.
Claim 3
Dependent Claim
40 words
The dissector (10) according to claim 1, further comprising a conduit (26) fluidly connecting the dissector tip (16) to the inlet arrangement (24), wherein the exhaust system (30) further comprises a hollow shaft (40) disposed parallel to the conduit (26).
Claim 4
Dependent Claim
15 words
The dissector (10) according to claim 2, wherein the hollow shaft surrounds the conduit (26).
Claim 5
Dependent Claim
24 words
The dissector (10) according to claim 2, wherein the inlet is formed as at least one transverse perforation (42) through the hollow shaft (40).
Claim 6
Dependent Claim
19 words
The dissector (10) according to claim 1, wherein the dissector tip (16) is rigidly connected to the conduit (26).
Claim 7
Dependent Claim
19 words
The dissector (10) according to claim 1, further comprising a gas supply (12) connected to the inlet arrangement (24).
Claim 8
Dependent Claim
34 words
The dissector (10) according to claim 1, wherein the flow of pressurized gas exuded from the dissector tip (16) is compatible with an insufflation cavity pressure of no more than about 15 mm Hg.
Claim 9
Dependent Claim
29 words
The dissector (10) according to claim 1, wherein the inlet arrangement (24) supplies gas to the dissector tip (16) at a pressure of no more than about 50 psi.
Claim 10
Dependent Claim
34 words
The dissector (10) according to claim 1, wherein the exhaust system (30) is capable of exhausting a flow of gas about equal to the flow of pressurized gas exuded by the dissector tip (16).
Claim 11
Dependent Claim
21 words
The dissector (10) according to claim 1, further comprising a handle (48) carrying the inlet arrangement (24) and the outlet (34).
Claim 12
Dependent Claim
20 words
The dissector (10) according to claim 10, wherein the outlet (34) comprises a seat (50) formed in the handle (48).
Claim 13
Dependent Claim
37 words
The dissector (10) according to claim 10, further comprising a trigger (58) carried on the handle (48) and operatively connected to the inlet arrangement (24) and the outlet (34), the trigger (58) abutting the inlet arrangement (24).
Claim 14
Dependent Claim
36 words
The dissector (10) according to claim 12, wherein the outlet (34) comprises a seat (50) formed in the handle (48), and a member (52) carried by the trigger (58) and sealingly engageable with the seat (50).
Claim 15
Dependent Claim
26 words
The dissector (10) according to claim 1, wherein the dissector tip (16) defines an orifice (18) having a cross-sectional area of about 6.7 mm 2 .
Claim 16
Dependent Claim
20 words
The dissector (10) according to claim 1, wherein the dissector tip (16) defines an orifice (18) having a circular cross-section.
Claim 17
Dependent Claim
43 words
The dissector (10) according to claim 1, further comprising a laparoscopic introducer sheath (68) through which the dissector tip (16) and the inlet (32) are insertable, the introducer sheath (68) being shorter than the distance between the inlet (32) and the outlet (34).
Claim 18
Dependent Claim
17 words
A dissector according to claim 1, wherein the distal end (16) includes an interchangeable dissector tip (104-106).
Claim 19
Dependent Claim
21 words
A dissector according to claim 1, wherein the distal end (16) includes a deflectable dissector tip (16) having a flexible portion.
Claim 20
Dependent Claim
28 words
A dissector according to claim 1, wherein the distal end (16) includes an adjustable dissector tip (16) for adjusting the amount and/or pattern (10) of the exuded gas.
Claim 21
Dependent Claim
27 words
A dissector according to claim 1, wherein the dissector further includes a venturi (114) and feeder tube (112) for introducing one or more medicants into a patient.
Claim 22
Dependent Claim
15 words
A dissector according to claim 1, wherein the distal end includes an electrosurgical element (118).
Claim 23
Dependent Claim
14 words
A dissector according to claim 1, wherein the dissector includes an optical fiber (122).
Claim 24
Dependent Claim
20 words
A dissector according to claim 1, wherein the dissector further includes a multiple position valve connected to the inlet arrangement.
Claim 25
Dependent Claim
322 words
A pneumatic tissue dissector (10) comprising: a dissector tip (16) for exuding a flow of pressurized gas; an inlet arrangement (24) for controlling the flow of pressurized gas from the dissector tip (16); a conduit (26) fluidly connecting the dissector tip (16) to the inlet arrangement (24), the dissector tip (16) being rigidly connected to the conduit (26); an exhaust system (30) comprising an inlet (32) adjacent to the dissector tip (16), an outlet (34) operable in coordination with the inlet arrangement (24), and a hollow shaft (40) disposed parallel to and surrounding the conduit (26); a handle (48) carrying the inlet arrangement (24) and the outlet (34), the outlet (34) comprising a seat (50) formed in the handle (48); a trigger (58) carried on the handle (48) and operatively connected to the inlet arrangement (24) and the outlet (34), the trigger (58) abutting the inlet arrangement (24); and a laparoscopic introducer sheath (68) through which the dissector tip (16) and the inlet (32) are insertable, the introducer sheath (68) being shorter than the distance between the inlet (32) and the outlet (34); wherein the inlet (32) is formed as a plurality of transverse perforations (42) through the hollow shaft (40); wherein the flow of pressurized gas exuded from the dissector tip (16) is compatible with an insufflation cavity pressure of no more than about 15 mm Hg; wherein the inlet arrangement (24) supplies gas to the dissector tip (16) at a pressure of no more than about 50 psi; wherein the exhaust system (30) is capable of exhausting a flow of gas about equal to the flow of pressurized gas exuded by the dissector tip (16); wherein the outlet (34) comprises a member (52) carried by the trigger (58) and sealingly engageable with the seat (50) in the handle (48); and wherein the dissector tip (16) defines a circular orifice (18) having a cross-sectional area of about 6.7 mm 2 .
Claim 26
Dependent Claim
322 words
A pneumatic tissue dissector (10) comprising: a dissector tip (16) for exuding a flow of pressurized gas; an inlet arrangement (24) for controlling the flow of pressurized gas from the dissector tip (16); a conduit (26) fluidly connecting the dissector tip (16) to the inlet arrangement (24), the dissector tip (16) being rigidly connected to the conduit (26); an exhaust system (30) comprising an inlet (32) adjacent to the dissector tip (16), an outlet (34) operable in coordination with the inlet arrangement (24), and a hollow shaft (40) disposed parallel to and surrounding the conduit (26); a handle (48) carrying the inlet arrangement (24) and the outlet (34), the outlet (34) comprising a seat (50) formed in the handle (48); a trigger (58) carried on the handle (48) and operatively connected to the inlet arrangement (24) and the outlet (34), the trigger (58) abutting the inlet arrangement (24); and a laparoscopic introducer sheath (68) through which the dissector tip (16) and the inlet (32) are insertable, the introducer sheath (68) being shorter than the distance between the inlet (32) and the outlet (34); wherein the inlet (32) is formed as a plurality of transverse perforations (42) through the hollow shaft (40); wherein the flow of pressurized gas exuded from the dissector tip (16) is compatible with an insufflation cavity pressure of no more than about 15 mm Hg; wherein the inlet arrangement (24) supplies gas to the dissector tip (16) at a pressure of no more than about 50 psi; wherein the exhaust system (30) is capable of exhausting a flow of gas about equal to the flow of pressurized gas exuded by the dissector tip (16); wherein the outlet (34) comprises a member (52) carried by the trigger (58) and sealingly engageable with the seat (50) in the handle (48); and wherein the dissector tip (16) defines a circular orifice (18) having a cross-sectional area of about 6.7 mm 2 .
References Cited (Backward Citations)
US5022414A
Cited
US5135482A
Cited
US4913698A
Cited
US4950238A
Cited
US4957492A
Cited
US5573504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-09-12 | 2004-03-13 | 2004-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-09-12 | 2008-03-13 | 2008-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-09-12 | 2012-03-13 | 2012-09-12 | $7700.00 | Window Closed / Lapsed |