US3888237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ph-measuring device used in an endoscope
Assignee: Olympus Corp
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Filing: 1973-10-15
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Granted: 1975-06-10
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Expires: 1993-10-15
Abstract
Abstract In an endoscope provided with a channel permitting the passage of forceps, a device to measure the PH of an abdominal liquid which comprises a glass electrode brought into contact with an abdominal liquid to measure its PH; a thin flexible tube fitted at one end to the glass electrode to bring said electrode to the desired abdominal liquid whose PH is to be measured and a lead having one end connected to the glass electrode and the opposite end extended to the outside through the flexible tube.
Inventors
- 👤 Toshiyuki Mori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:23
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/273; A61B1/2736; A61B1/00064; A61B1/00071; A61B1/0008; A61B1/00098; A61B1/00163; A61B1/00165; A61B1/00174; A61B1/00177; A61B1/012; A61B1/018; A61B5/00; A61B5/145; A61B5/14539
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
160 words
In an endoscope provided with an elongated forceps channel (22), a PH-measuring device (10) comprising: an elongated flexible tubular member (16) including an elongated flexible tube (18) and an elongated flexible tubular metal coil (17) extending along and in the flexible tube (18), said tubular member (16) being inserted into the elongated forceps channel (22) and extendable at one end into a body cavity; a glass electrode (11) coupled to said one end of the elongated tubular metal coil (17) so as to be extendable into a body cavity and adapted to contact with matter in said body to indicate a potential corresponding to the PH of said body matter which is to be examined; and an elongated electrical lead (20) passing through said elongated tubular metal coil (17) and connected at one end to the glass electrode (11) and at the other end adapted to be connected to an external potential measuring device through the flexible tubular member (16).
Claim 2
Dependent Claim
160 words
In an endoscope provided with an elongated forceps channel (22), a PH-measuring device (10) comprising: an elongated flexible tubular member (16) including an elongated flexible tube (18) and an elongated flexible tubular metal coil (17) extending along and in the flexible tube (18), said tubular member (16) being inserted into the elongated forceps channel (22) and extendable at one end into a body cavity; a glass electrode (11) coupled to said one end of the elongated tubular metal coil (17) so as to be extendable into a body cavity and adapted to contact with matter in said body to indicate a potential corresponding to the PH of said body matter which is to be examined; and an elongated electrical lead (20) passing through said elongated tubular metal coil (17) and connected at one end to the glass electrode (11) and at the other end adapted to be connected to an external potential measuring device through the flexible tubular member (16).
Claim 3
Dependent Claim
14 words
Apparatus according to claim 1 wherein said flexible tube is made of soft material.
Claim 4
Dependent Claim
23 words
Apparatus according to claim 1 wherein the glass electrode is wrapped in a protective covering bored with a large number of through holes.
Claim 5
Dependent Claim
12 words
Apparatus according to claim 3 wherein the covering is a metal net.
Claim 6
Dependent Claim
63 words
Apparatus according to claim 1 wherein the glass electrode includes a PH-measuring glass sphere filled with a solution of electrolyte, a glass tube connected at one end to the glass sphere and at the other end to the elongated flexible tubuLar member and a reference electrode immersed in the electrolyte solution filled in the glass sphere and directly connected to the electrical lead.
Claim 7
Dependent Claim
18 words
Apparatus according to claim 5 which further comprises a protective tube surrounding the glass tube for its protection.
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) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |