US4913698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqua-stream and aspirator for brain surgery
Assignee: MARUI IKA COMPANY Ltd NO 14-1 YUSHIMA 2-CHOME BUNKYO-KU TOKYO JAPAN
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Filing: 1988-09-07
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Granted: 1990-04-03
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Expires: 2008-09-07
Abstract
Abstract An aqua-stream and aspirator for crushing and removing brain tumors in cerbral surgery comprises a pressure chamber, a soft bottle filled with a sterilized saline solution and mounted within the pressure chamber, an irrigation tube connected at one end to an outlet of the soft bottle, an ejection needle removably connected to the other end of the irrigation tube via a swtich for controlling passage of the solution through the irrigation tube, and a suction tube extending parallel to the ejection needle. The pressure chamber is adapted to be pressurized with a harmless gas so as to compress the soft bottle to eject the solution in the soft bottle from the ejection needle. The ejection needle has a nozzle which is bent in such a manner that the solution ejected from the nozzle is directed toward a confronting inside wall of the tip of the suction tube.
Inventors
- 👤 Haruhide Ito
- 👤 Akihiro Kitamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:54
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3203; A61M; A61M1/00; A61M1/84; A61M1/85; A61M3/00; A61M3/02; A61M3/0233; A61M3/0279; A61B2017/0023; A61B2017/0046; A61B2017/00464; A61B2017/00973; A61M5/00; A61M5/14; A61M5/142; A61M5/145; A61M5/148; A61M5/1483; A61M5/1486; A61M5/155
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
194 words
An aqua-stream and aspirator for crushing and removing brain tumors in cerebral surgery, comprising: (a) a pressure chamber; (b) a soft bottle filled with a sterilized saline solution and mounted within the pressure chamber; (c) an irrigation tube connected at one end to an outlet of the soft bottle; (d) an ejection needle removably connected to the other end of the irrigation tube via a switch for controlling passage of the solution through the irrigation tube; and (e) a suction tube connected to the ejection needle and extending parallel to the ejection needle; (f) the pressure chamber being pressurized with a harmless gas so as to compress the soft bottle to eject the solution in the soft bottle from the ejection needle; (g) the ejection needle having a bent nozzle means for outwardly directing the solution ejected from the nozzle means toward a confronting inside wall of a tip of the suction tube and for directing the ejected solution to intersect the longitudinal axis of the suction tube to thereby suck and crush brain tumor within the suction tube and to thereby permit the making of a small incision line in the brain tumor.
Claim 2
Dependent Claim
194 words
An aqua-stream and aspirator for crushing and removing brain tumors in cerebral surgery, comprising: (a) a pressure chamber; (b) a soft bottle filled with a sterilized saline solution and mounted within the pressure chamber; (c) an irrigation tube connected at one end to an outlet of the soft bottle; (d) an ejection needle removably connected to the other end of the irrigation tube via a switch for controlling passage of the solution through the irrigation tube; and (e) a suction tube connected to the ejection needle and extending parallel to the ejection needle; (f) the pressure chamber being pressurized with a harmless gas so as to compress the soft bottle to eject the solution in the soft bottle from the ejection needle; (g) the ejection needle having a bent nozzle means for outwardly directing the solution ejected from the nozzle means toward a confronting inside wall of a tip of the suction tube and for directing the ejected solution to intersect the longitudinal axis of the suction tube to thereby suck and crush brain tumor within the suction tube and to thereby permit the making of a small incision line in the brain tumor.
Claim 3
Dependent Claim
47 words
An aqua-stream and aspirator according to claim 1, wherein the tip of the suction tube has diametrically opposed first and second portions, the second portion being disposed adjacent to the nozzle, the first portion projecting beyond the second portion for receiving the solution ejected from the nozzle.
Claim 4
Dependent Claim
36 words
An aqua-stream and aspirator according to claim 1, wherein the confronting inside wall of the suction tube has at the first portion a ridge having an outwardly facing taper surface and an inwardly facing taper surface.
Claim 5
Dependent Claim
21 words
An aqua-stream and aspirator according to claim 1, wherein the confronting inside wall of the suction tube has a cylindrical surface.
Claim 6
Dependent Claim
30 words
An aqua-stream and aspirator according to claim 1, wherein the suction nozzle of the ejection needle is bent at an angle of 15° and is located outside the suction nozzle.
Claim 7
Dependent Claim
170 words
An aqua-stream and aspirator for crushing and removing brain tumors in cerebral surgery, comprising: (a) a pressure chamber; (b) a soft bottle filled with a sterilized saline solution and mounted within the pressure chamber; (c) an irrigation tube connected at one end to an outlet of the soft bottle; (d) an ejection needle removably connected to the other end of the irrigation tube via a switch for controlling passage of the solution through the irrigation tube; and (e) a suction tube extending parallel to the ejection needle; (f) the pressure chamber being pressurized with a harmless gas so as to compress the soft bottle to eject the solution in the soft bottle from the ejection needle; (g) the ejection needle having a bent nozzle means for directing the solution ejected from the nozzle means toward a confronting inside wall of a tip of the suction tube, wherein the confronting inside wall of the suction tube has a ridge having an outwardly facing taper surface and an inwardly facing taper surface.
Claim 8
Dependent Claim
170 words
An aqua-stream and aspirator for crushing and removing brain tumors in cerebral surgery, comprising: (a) a pressure chamber; (b) a soft bottle filled with a sterilized saline solution and mounted within the pressure chamber; (c) an irrigation tube connected at one end to an outlet of the soft bottle; (d) an ejection needle removably connected to the other end of the irrigation tube via a switch for controlling passage of the solution through the irrigation tube; and (e) a suction tube extending parallel to the ejection needle; (f) the pressure chamber being pressurized with a harmless gas so as to compress the soft bottle to eject the solution in the soft bottle from the ejection needle; (g) the ejection needle having a bent nozzle means for directing the solution ejected from the nozzle means toward a confronting inside wall of a tip of the suction tube, wherein the confronting inside wall of the suction tube has a ridge having an outwardly facing taper surface and an inwardly facing taper surface.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-02 | 1993-10-02 | 1994-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-02 | 1997-10-02 | 1998-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-02 | 2001-10-02 | 2002-04-03 | $7700.00 | Window Closed / Lapsed |