EP0258901A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Water jet operating apparatus and liquid supply unit line used for the apparatus
Assignee: TONOKURA IKA KOGYO CO Ltd
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Filing: 1987-09-03
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Granted: —
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Expires: 2007-09-03
Abstract
Abstract An injection hole and a suction hole are formed in a handpiece (1), and a liquid supply source (2) is connected to the injection hole via a supply line (3). The supply line (3) includes an elastically deformable tube (12) disposed at the midway. Liquid within the liquid supply source is supplied by pressure to the injection hole by means of an external pump such as a roller pump acting to the pump tube from the outside.
Inventors
- 👤 Hitoshi Kobayashi
- 👤 Mamoru Kurihara
- 👤 Haruhiko Machida
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 12:06
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3203; A61B2017/0023; A61B2017/00973; A61B2217/00; A61B2217/002; A61B2217/005; A61B2217/007
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
126 words
(1) A water jet operating apparatus comprising; a handpiece having an injection hole and a suction hole both opened at the fornt end thereof; a liquid supply source for storing liquid to be injected from the injection hole of the handpiece; a supply line connecting the injection hole of the handpiece to the liquid supply source, and having an elastically deformable pump tube disposed at the midway, and the portion thereof between the pump tube and the handpiece being formed as a pressure tube; an external pump for supplying by pressure the liquid within the liquid supply source toward the handpiece by acting to the pump tube from the outside; and a suction means connected to the suction hole of the handpiece via a suction line.
Claim 2
Dependent Claim
51 words
(2) The water jet operating apparatus according to claim 1, further comprising a return line connecting the liquid supply source to the handpiece, in parallel with the supply line, and the handpiece further including a change-over valve for communicating the supply line with the injection hole or the return line selectively,
Claim 3
Dependent Claim
19 words
(3) The water jet operating apparatus according to claim 1, in which the external pump is a roller pump.
Claim 4
Dependent Claim
32 words
(4) The water jet operating apparatus according to claim 1, in which the pressure of the injection liquid from the injection hole is set at a value between 2 and 30 kgf/cm².
Claim 5
Dependent Claim
33 words
(5) The water jet operating apparatus according to claim 4, in which the pressure of the injection liquid from the injection hole is adjusted by adjusting a rotational speed of the external pump.
Claim 6
Dependent Claim
25 words
(6) The water jet operating apparatus according to claim 5, in which the rotational speed of the external pump is adjusted by a foot-pedal switch.
Claim 7
Dependent Claim
29 words
(7) The water jet operating apparatus according to claim 1, in which the supply line includes an air trap disposed at the upstream side relative to the pump tube.
Claim 8
Dependent Claim
49 words
(8) The water jet operating apparatus according to claim 1, in which the liquid supply source is a bottle storing liquid and corked by a stopper made from a flexible member and the upstream end of the supply line is formed by a needle which penetrates through the stopper.
Claim 9
Dependent Claim
104 words
(9) A unit line for supplying liquid used for a water jet operating apparatus comprising: a handpiece having an injection hole and a suction hole both opened at the front end thereof; a liquid supply tube whose one end being connected to the injection hole of the handpiece, including an elastically deformable pump tube disposed at the midway, and the portion thereof between the pump tube and the handpiece is formed as a pressure tube; a needle connected to the other end of the liquid supply tube; and an air trap connected to the liquid supply tube between the needle and the pump tube.
Claim 10
Dependent Claim
33 words
(10) The unit line according to claim 9, in which the handpiece includes a change-over valve for changing over the connection and the disconnection between the liquid supply tube and the injection hole,
Claim 11
Dependent Claim
52 words
(11) The unit line according to claim 9, further comprising a return tube whose one end being connected to the handpiece and whose other end being connected to a needle, and the handpiece including a change-over valve for communicating the liquid supply tube with the injection hole or the return tube selectively,
Claim 12
Dependent Claim
24 words
(12) The unit line according to claim 9, in which the pump tube has double structure comprising an outer tube and an inner tube.
Claim 13
Dependent Claim
24 words
(13) The unit line according to claim 9, in which the pressure tube has double structure comprising an outer tube and an inner tube.
Claim 14
Dependent Claim
24 words
(14) The unit line according to claim 12, in which the outer tube is formed by polyethylene or vinylchloride tube reinforced by nylon braid.
Claim 15
Dependent Claim
20 words
(15) The unit line according to claim 12, in which the inner tube is formed by polyethylene or vinylchloride tube.
Claim 16
Dependent Claim
24 words
(16) The unit line according to claim 13, in which the outer tube is formed by polyethylene or vinylchloride tube reinforced by nylon braid.
Claim 17
Dependent Claim
20 words
(17) The unit line according to claim 13, in which the inner tube is formed by polyethylene or vinylchloride tube.
Claim 18
Dependent Claim
53 words
(18) The unit line according to claim 9, in which the liquid supply line is comprised by connecting together at least three tubes comprising a first tube forming the pressure tube, a second tube forming the pump tube and a third tube forming an upstream tube between the pump tube and the needle.
Claim 19
Dependent Claim
27 words
(19) The line unit according to claim 9, in which the handpiece is made from synthetic resin and formed in shape of a pencil as a whole.
Claim 20
Dependent Claim
103 words
(20) The line unit according to claim 11, in which the change-over valve is disposed at the rear end portion of the handpiece, the handpiece further includes a spring plate for operating the change-over valve, extending along the longitudinal direction thereof, and the spring plate is so designed that its one end is fixed to the outer periphery at the front end portion of the handpiece and the other end is free, whereby when the spring plate is elastically displaced in the direction approaching to the outer periphery of the handpiece, the change-over valve communicates the liquid supply tube with the injection tube.
References Cited (Backward Citations)
No citation records indexed.
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