Patent EP0399117A2 successfully refreshed from Google Patents.
EP0399117A2
Expired / Lapsed
EP
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Continuous injector of liquid medicine
Assignee: Tsukada Medical Research Co Ltd
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Filing: 1989-06-27
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Granted: —
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Expires: 2009-06-27
Abstract
Abstract A continuous liquid medicine injector (10) has a cylindrical body (11). A liquid medicine receiving portion is provided at one end of the cylindrical portion (13), and an instrument inserted into a human body which may be a needle (52) is provided at the other end thereof. Two ends of a tubular rubber-like elastic film (31) are fixed to an intermediate portion of the cylindrical body. A liquid medicine flow into the elastic film through a through-hole (11a) formed in the cylindrical body to inflate the elastic film, and the elastic film which has been inflated forms a pressurizing means of the liquid medicine. A thin tube (21) having a predetermined inner diameter and a predetermined length is disposed within the cylindrical body. One end of the thin tube is made to communicate with the instrument inserted into the human body.
Inventors
- 👤 Shinji Mimura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 16:34
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/142; A61M5/145; A61M5/148; A61M5/152
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
109 words
A continuous liquid medicine injector, comprising: a liquid medicine accommodating portion: a pressurizing means for applying a pressure to a liquid medicine accommodated in said liquid medicine accommodating portion: and a flow rate control means and an instrument inserted into a human body through which the liquid medicine in said liquid medicine accommodating portion is forced into a human body by means of the pressure applied by said pressurizing means, wherein said flow rate control means includes a thin tube having a predetermined inner diameter and a predetermined length, the flow rate of the liquid medicine being controlled by the passage of said liquid medicine through said thin tube.
Claim 2
Dependent Claim
109 words
A continuous liquid medicine injector, comprising: a liquid medicine accommodating portion: a pressurizing means for applying a pressure to a liquid medicine accommodated in said liquid medicine accommodating portion: and a flow rate control means and an instrument inserted into a human body through which the liquid medicine in said liquid medicine accommodating portion is forced into a human body by means of the pressure applied by said pressurizing means, wherein said flow rate control means includes a thin tube having a predetermined inner diameter and a predetermined length, the flow rate of the liquid medicine being controlled by the passage of said liquid medicine through said thin tube.
Claim 3
Dependent Claim
53 words
A continuous liquid medicine injector according to claim 1, further including a liquid medicine receiving portion provided at one end of a cylindrical body, said liquid medicine receiving portion being provided with a liquid medicine flow-out prevention means for preventing the liquid medicine injected from flowing out of said liquid medicine receiving portion.
Claim 4
Dependent Claim
58 words
A continuous liquid medicine injector according to claim 2, wherein said liquid medicine flow rate control means for controlling the flow of the liquid medicine is provided at the other end of said cylindrical body, and wherein said instrument inserted into the human body is detachably provided on the side of the other end of said cylindrical body.
Claim 5
Dependent Claim
98 words
A continuous liquid medicine injector according to claim 2, wherein an intermediate portion of said cylindrical body has a through-hole, said through-hole being covered by a cylindrical rubber-like elastic film whose two end portions are closely fixed to said cylindrical body and whose intermediate portion can be separated from said cylindrical body, the liquid medicine injected into said cylindrical body from said liquid medicine receiving portion being caused to flow into said rubber-like elastic film through said through-hole to inflate said rubber-like elastic film, the inflating force of said rubber-like elastic film constituting said liquid medicine pressurizing means.
Claim 6
Dependent Claim
36 words
A continuous liquid medicine injector according to claim 2, wherein said liquid medicine accommodating portion is constituted by an interior of said rubber-like elastic film which has been inflated and an interior of said cylindrical body.
Claim 7
Dependent Claim
32 words
A continuous liquid medicine injector according to claim 2, wherein said thin tube is bonded within a covering tube, said thin tube being fixed to said cylindrical body through said covering tube.
Claim 8
Dependent Claim
24 words
A continuous liquid medicine injector according to claim 2, wherein said thin tube is fixedly buried within a synthetic resin filling said cylindrical body.
Claim 9
Dependent Claim
37 words
A continuous liquid medicine injector according to claim 2, wherein said thin tube is supported by plates disposed within said cylindrical body in such a manner as to be apart from each other at a predetermined interval.
Claim 10
Dependent Claim
23 words
A continuous liquid medicine injector according to claim 2, wherein said thin tube is made of a resin, a metal or a ceramic.
Claim 11
Dependent Claim
40 words
A continuous liquid medicine injector according to claim 3, further including an opening/closing means interposed between said liquid medicine flow rate control means and said instrument inserted into the human body for suitably blocking the flow of the liquid medicine.
References Cited (Backward Citations)
No citation records indexed.
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