CN108567415B - PH electrode catheter - Google Patents
PH electrode catheter Download PDFInfo
- Publication number
- CN108567415B CN108567415B CN201810721632.5A CN201810721632A CN108567415B CN 108567415 B CN108567415 B CN 108567415B CN 201810721632 A CN201810721632 A CN 201810721632A CN 108567415 B CN108567415 B CN 108567415B
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- China
- Prior art keywords
- electrode
- catheter
- conductive contact
- contact pin
- rear end
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- 238000007789 sealing Methods 0.000 claims abstract description 26
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 239000002699 waste material Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 4
- 229910021607 Silver chloride Inorganic materials 0.000 description 3
- 229910052787 antimony Inorganic materials 0.000 description 3
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- -1 hydrogen ions Chemical class 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical group [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/42—Detecting, measuring or recording for evaluating the gastrointestinal, the endocrine or the exocrine systems
- A61B5/4222—Evaluating particular parts, e.g. particular organs
- A61B5/4238—Evaluating particular parts, e.g. particular organs stomach
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/42—Detecting, measuring or recording for evaluating the gastrointestinal, the endocrine or the exocrine systems
- A61B5/4222—Evaluating particular parts, e.g. particular organs
- A61B5/4233—Evaluating particular parts, e.g. particular organs oesophagus
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
- A61B5/6847—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive mounted on an invasive device
- A61B5/6852—Catheters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
- A61B5/6867—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive specially adapted to be attached or implanted in a specific body part
- A61B5/687—Oesophagus
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
- A61B5/6867—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive specially adapted to be attached or implanted in a specific body part
- A61B5/6871—Stomach
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- Physics & Mathematics (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Public Health (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Physiology (AREA)
- Endocrinology (AREA)
- Gastroenterology & Hepatology (AREA)
- Electrotherapy Devices (AREA)
Abstract
The invention provides a pH electrode catheter, and belongs to the technical field of medical appliances. The problems that a reference electrode in the existing pH electrode catheter cannot be detached from a catheter body, and the whole reference electrode is scrapped after being damaged, so that resource waste is caused are solved. The pH electrode catheter comprises a catheter body with a wire penetrating through the inside and a reference electrode arranged at the front end of the catheter body, wherein the reference electrode comprises a shell, the rear end of the shell is detachably connected with the catheter body, a cavity with an open front end and a closed rear end is arranged in the shell, an electrode body is arranged in the cavity, and a connecting structure for enabling the wire to be electrically connected with the electrode body is arranged between the shell and the catheter body. The invention has the advantages of rapid replacement of the reference electrode, stable and reliable connection, good sealing performance and the like, and effectively saves resources.
Description
Technical Field
The invention belongs to the technical field of medical appliances, and relates to a pH electrode catheter.
Background
The pH electrode catheter is mainly used for detecting the pH value of human stomach-esophagus, the pH electrode catheter is provided with a reference electrode and an indicating electrode, the reference electrode is usually an Ag-AgCl reference electrode, and the indicating electrode is usually made of antimony metal with the purity of 99.99%. The reference electrode and the indicating electrode can be consumed in the detection process of the pH electrode catheter, but the consumption speed of the reference electrode is far greater than that of the indicating electrode, so that the effective life of the reference electrode is far less than that of the indicating electrode in the use process.
A novel medical pH electrode catheter disclosed in China patent [ application publication No. CN107752983A ] comprises a catheter, wherein a reference electrode is arranged at the front end of the catheter and is fixed on the catheter through being built in the catheter or sealed and adhered by glue solution, and after the glue solution is solidified, the reference electrode and the catheter are tightly adhered into a whole and are not detachable. It has the following problems: because the reference electrode is not detachable, when the service life of the reference electrode is consumed, the guide tube cannot be used, so that the resource is wasted; in the production process, when the reference electrode is bad, the poor guide tube can be directly caused, and the production efficiency is affected.
Disclosure of Invention
The invention aims at solving the problems in the prior art and provides a pH electrode catheter with a reference electrode capable of being replaced quickly.
The aim of the invention can be achieved by the following technical scheme:
The pH electrode catheter comprises a catheter body with a wire penetrating through the inside and a reference electrode arranged at the front end of the catheter body, and is characterized in that the reference electrode comprises a shell with the rear end detachably connected with the catheter body, a cavity with an open front end and a closed rear end is arranged in the shell, an electrode body is arranged in the cavity, and a connecting structure for enabling the wire to be electrically connected with the electrode body is arranged between the shell and the catheter body.
An indicator electrode made of antimony metal is provided at the side of the pH electrode catheter. The reference electrode and the indicating electrode are both extended into the measured liquid to detect the concentration of hydrogen ions in the measured liquid and convert the concentration into corresponding usable output signals. The liquid is in contact with the electrode body through the opening at the front end of the housing, and the liquid cannot enter the catheter body, and reliable sealing performance needs to be ensured between the housing and the catheter. Wherein the electrode body is silver chloride wire.
In the above-mentioned pH electrode catheter, the front end of catheter body is equipped with the connector, the internal shrinkage pool that has of connector and the through-hole of locating the shrinkage pool bottom, in stretching into the shrinkage pool after the front end of wire passes the through-hole, casing and connector detachable be connected, connection structure be located between connector and the casing. In order to realize the quick connection between the catheter body and the connector, a connecting part is arranged at the rear end of the connector, and the catheter body is sleeved on the connecting part during connection. In order to prevent the catheter body from falling off, the catheter body and the connecting part can be fixedly connected in a glue bonding or lantern ring locking mode.
In the above pH electrode catheter, the connection structure comprises a conductive contact pin arranged at the rear end of the housing, a conductive contact pin arranged in the concave hole, and an elastic member, the electrode body is fixed on the conductive contact pin, the wire is connected with the conductive contact pin, and the conductive contact pin is abutted against the conductive contact pin under the action of the elastic force of the elastic member. The conductive contact pin is made of conductive hard metal material, the conductive contact pin is made of conductive material, the elastic piece is positioned in the concave hole, the rear end of the elastic piece is abutted against the bottom of the concave hole, the front end of the elastic piece is abutted against the conductive contact pin, and the conductive contact pin is always abutted against the conductive contact pin under the elastic action of the elastic piece. Due to the arrangement of the elastic piece, reliable contact between the conductive contact pin and the conductive contact is ensured after the reference electrode is installed.
In the above pH electrode catheter, the elastic member is a spring. In order to prevent the spring from affecting the wire during the movement, the wire is inserted into the spring. The elastic member is not limited to the spring, and may be a silica gel or rubber-like elastic body, and the silica gel or rubber-like elastic body may be made into a hollow cylindrical shape, and the lead may be inserted therein.
In the pH electrode catheter described above, the front end of the conductive contact has a notch disposed opposite the conductive contact pin. The notch is horn-shaped, the rear end of the conductive contact pin is provided with a cone part matched with the horn-shaped notch, and the conductive contact pin can be guided when the reference electrode is installed, so that the reference electrode can accurately enter the notch, and the installation accuracy of the conductive contact pin is ensured.
In the above pH electrode catheter, the rear end of the housing is provided with an external thread, the front end of the concave hole is provided with an internal thread, the external thread and the internal thread are matched, and a sealing component is arranged between the housing and the connector.
In the above pH electrode catheter, the root of the external thread has an annular step one disposed opposite to the front end of the connector, and the seal assembly includes an annular seal gasket one disposed between the front end of the connector and the annular step one. When the internal thread is connected with the external thread, the annular sealing gasket I is tightly pressed on the annular step I and the front end of the connector to play a role in sealing.
In the above pH electrode catheter, the root of the internal thread has a second annular step opposite to the rear end of the housing, and the seal assembly further includes a second annular seal gasket disposed between the rear end of the housing and the second annular step.
In the above pH electrode catheter, the conductive contact pin is provided with a limiting ring for blocking the rear end of the cavity, the outer diameter of the limiting ring is larger than the inner diameter of the annular step two, and the annular sealing gasket is located between the limiting ring and the annular step two. When the internal thread is connected with the external thread, the annular sealing gasket II is pressed between the annular step II and the limiting ring, and simultaneously, the limiting ring is extruded, so that the rear end of the cavity is blocked by the limiting ring.
When the connecting body is installed, the wire penetrates through the through hole and then stretches into the concave hole, and is connected with the conductive contact after penetrating through the spring, the wire can limit the position of the conductive contact to prevent the conductive contact from falling from the concave hole, and the connecting body and the catheter body are connected into a whole; the conductive contact pin is arranged in the shell to form a reference electrode, so that the electrode body is ensured to extend into the cavity and the limit ring is ensured to seal the rear end of the cavity; an annular sealing gasket I is arranged on the annular step I, and an annular sealing gasket II is arranged on the annular step II; after the shell and the connector are connected in place through threads, the conductive contact pins are abutted against the conductive contacts, and the annular sealing gasket I and the annular sealing gasket II play a double sealing role. When the service life of the reference electrode is used in the test or use process, the worn reference electrode can be continuously used only by unscrewing the damaged reference electrode and replacing the new reference electrode.
Compared with the prior art, the pH electrode catheter has the following advantages:
The reference electrode is detachably connected to the connector body connected with the catheter body, so that the connection and the detachment are convenient, the damaged reference electrode is convenient to replace, and the resources are effectively saved; due to the arrangement of the springs, good contact between the conductive contact pins and the conductive contacts can be ensured; the annular sealing gasket I and the annular sealing gasket II have double sealing effects, prevent the liquid to be tested from entering, and can effectively improve the detection precision.
Drawings
FIG. 1 is an exploded view of a preferred embodiment of the present invention.
Fig. 2 is a cross-sectional view of a pH electrode catheter provided by the present invention when not assembled.
Fig. 3 is a cross-sectional view of the pH electrode catheter provided by the present invention when assembled.
In the figure, 1, a wire; 2. a catheter body; 3. a reference electrode; 31. a housing; 32. a cavity; 33. an electrode body; 34. a conductive contact pin; 35. a cone portion; 36. an external thread; 37. an annular step I; 38. a limiting ring; 4. a connecting body; 41. concave holes; 42. a through hole; 43. a connection part; 44. an internal thread; 45. annular steps II; 51. a conductive contact; 52. a spring; 53. a notch; 61. an annular sealing gasket I; 62. and a second annular sealing gasket.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
The pH electrode catheter comprises a catheter body 2 with a wire 1 penetrating through the inside and a reference electrode 3 arranged at the front end of the catheter body 2, wherein the reference electrode 3 comprises a shell 31 with the rear end detachably connected with the catheter body 2, a cavity 32 with an open front end and a closed rear end is arranged in the shell 31, an electrode body 33 is arranged in the cavity 32, and a connecting structure for enabling the wire 1 to be electrically connected with the electrode body 33 is arranged between the shell 31 and the catheter body 2, as shown in fig. 2 and 3. An indicator electrode made of antimony metal is provided at the side of the pH electrode catheter. The reference electrode 3 and the indicating electrode are both extended into the measured liquid to detect the concentration of hydrogen ions in the measured liquid and convert the hydrogen ions into corresponding usable output signals. The liquid is in contact with the electrode body 33 through the opening at the front end of the housing 31, and the liquid cannot enter the catheter body 2, and it is necessary to ensure reliable sealing between the housing 31 and the catheter.
In this embodiment, the electrode body 33 is silver chloride wire.
As shown in fig. 1, the front end of the catheter body 2 is provided with a connector 4, as shown in fig. 2 and 3, the connector 4 is provided with a concave hole 41 and a through hole 42 arranged at the bottom of the concave hole 41, the front end of the wire 1 passes through the through hole 42 and then stretches into the concave hole 41, the shell 31 is detachably connected with the connector 4, and the connecting structure is positioned between the connector 4 and the shell 31. In order to realize the quick connection between the catheter body 2 and the connector 4, a connection part 43 is provided at the rear end of the connector 4, and the catheter body 2 is sleeved on the connection part 43 when connected as shown in fig. 2 and 3. To prevent the catheter body 2 from falling off, the catheter body may be fixedly connected to the connection part 43 by means of glue bonding or collar locking.
As shown in fig. 2 and 3, the connection structure includes a conductive contact pin 34 provided at the rear end of the housing 31, a conductive contact 51 provided in the recess 41, and an elastic member, the electrode body 33 is fixed on the conductive contact pin 34, the wire 1 is connected with the conductive contact 51, and the conductive contact 51 abuts against the conductive contact pin 34 under the elastic force of the elastic member. The conductive contact pin 34 is made of conductive hard metal material, the conductive contact 51 is made of conductive material, the elastic member is located in the concave hole 41, the rear end of the elastic member is abutted against the bottom of the concave hole 41, the front end of the elastic member is abutted against the conductive contact pin 51, and the conductive contact pin 51 is always abutted against the conductive contact pin 34 under the elastic force of the elastic member. Due to the provision of the resilient member, a reliable contact of the conductive contact pin 34 with the conductive contact 51 is ensured after the reference electrode 3 is mounted.
As shown in fig. 2, the elastic member is a spring 52, and in order that the spring 52 does not affect the wire 1 during movement, the wire 1 is inserted into the spring 52 as shown in fig. 3.
As shown in fig. 2, the front end of the conductive contact 51 is provided with a notch 53 opposite to the conductive contact pin 34, the notch 53 is horn-shaped, the rear end of the conductive contact pin 34 is provided with a cone 35 matched with the horn-shaped notch 53, and the conductive contact pin 34 can be guided when the reference electrode 3 is installed, so that the reference electrode can accurately enter the notch 53, and the installation accuracy of the conductive contact pin 34 is ensured.
As shown in fig. 2, the rear end of the housing 31 is provided with an external thread 36, the front end of the concave hole 41 is provided with an internal thread 44, the external thread 36 is matched with the internal thread 44, and a sealing assembly is arranged between the housing 31 and the connector 4.
As shown in fig. 2, the root of the external thread 36 has an annular step one 37 opposite to the front end of the connecting body 4, and the sealing assembly includes an annular gasket one 61 disposed between the front end of the connecting body 4 and the annular step one 37, and when the internal thread 44 is connected with the external thread 36, the annular gasket one 61 is pressed against the annular step one 37 and the front end of the connecting body 4 to perform a sealing function.
As shown in fig. 2, the root of the internal thread 44 has an annular step two 45 disposed opposite the rear end of the housing 31, and the seal assembly further includes an annular gasket two 62 disposed between the rear end of the housing 31 and the annular step two 45.
As shown in fig. 1, the conductive contact pin 34 is provided with a limiting ring 38 for blocking the rear end of the cavity 32, the outer diameter of the limiting ring 38 is larger than the inner diameter of the annular step two 45, and the annular sealing gasket two 62 is positioned between the limiting ring 38 and the annular step two 45. When the internal thread 44 is connected with the external thread 36, the second annular sealing gasket 62 is pressed between the second annular step 45 and the limiting ring 38, and simultaneously, the limiting ring 38 is pressed, so that the rear end of the cavity 32 is blocked by the limiting ring 38.
When the connecting body is installed, the wire 1 penetrates through the through hole 42 and then stretches into the concave hole 41, penetrates through the spring 52 and then is connected with the conductive contact 51, the wire 1 can limit the position of the conductive contact 51 and prevent the conductive contact 51 from falling out of the concave hole 41, and the connecting body 4 and the catheter body 2 are connected into a whole; a conductive contact pin 34 is arranged in the shell 31 to form a reference electrode 3, so that the electrode body 33 extends into the cavity 32 and a limit ring 38 is ensured to seal the rear end of the cavity 32; an annular sealing gasket I61 is arranged on the annular step I37, and an annular sealing gasket II 62 is arranged on the annular step II 45; after the housing 31 and the connecting body 4 are screwed in place, the conductive contact pins 34 abut against the conductive contacts 51, and the annular gaskets 61 and 62 perform a double seal. In the testing or using process, when the service life of the reference electrode 3 is used, the damaged reference electrode 3 is only required to be unscrewed and replaced by a new reference electrode 3, so that the reference electrode can be used continuously.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (7)
1. The pH electrode catheter comprises a catheter body (2) with a lead (1) penetrating through the inside and a reference electrode (3) arranged at the front end of the catheter body (2), and is characterized in that the reference electrode (3) comprises a shell (31) with the rear end detachably connected with the catheter body (2), a cavity (32) with an open front end and a closed rear end is arranged in the shell (31), an electrode body (33) is arranged in the cavity (32), and a connecting structure for enabling the lead (1) to be electrically connected with the electrode body (33) is arranged between the shell (31) and the catheter body (2); the front end of the catheter body (2) is provided with a connector (4), and a concave hole (41) is formed in the connector (4); the connecting structure comprises a conductive contact pin (34) arranged at the rear end of the shell (31), a conductive contact pin (51) arranged in the concave hole (41) and an elastic piece, wherein the electrode body (33) is fixed on the conductive contact pin (34), the lead (1) is connected with the conductive contact pin (51), and the conductive contact pin (51) is abutted against the conductive contact pin (34) under the action of the elastic force of the elastic piece; the connecting body (4) is internally provided with a through hole (42) arranged at the bottom of the concave hole (41), the front end of the wire (1) penetrates through the through hole (42) and then stretches into the concave hole (41), the shell (31) is detachably connected with the connecting body (4), and the connecting structure is located between the connecting body (4) and the shell (31).
2. The pH electrode catheter of claim 1, wherein the resilient member is a spring (52).
3. PH electrode catheter according to claim 1, characterized in that the front end of the conductive contact (51) has a recess (53) arranged opposite the conductive contact pin (34).
4. A pH electrode catheter according to claim 1,2 or 3, wherein the rear end of the housing (31) is provided with an external thread (36), the front end of the recess (41) is provided with an internal thread (44), the external thread (36) is arranged in cooperation with the internal thread (44), and a sealing assembly is arranged between the housing (31) and the connector (4).
5. The pH electrode catheter of claim 4, wherein the root of the external thread (36) has an annular step one (37) disposed opposite the front end of the connector (4), and the seal assembly comprises an annular gasket one (61) disposed between the front end of the connector (4) and the annular step one (37).
6. The pH electrode catheter of claim 5, wherein the root of the internal thread (44) has an annular step two (45) disposed opposite the rear end of the housing (31), and the seal assembly further comprises an annular gasket two (62) disposed between the rear end of the housing (31) and the annular step two (45).
7. The pH electrode catheter of claim 6, wherein the conductive contact pin (34) has a stop ring (38) for plugging the rear end of the cavity (32), the outer diameter of the stop ring (38) is larger than the inner diameter of the annular step two (45), and the annular gasket two (62) is located between the stop ring (38) and the annular step two (45).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810721632.5A CN108567415B (en) | 2018-07-04 | 2018-07-04 | PH electrode catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810721632.5A CN108567415B (en) | 2018-07-04 | 2018-07-04 | PH electrode catheter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108567415A CN108567415A (en) | 2018-09-25 |
| CN108567415B true CN108567415B (en) | 2024-05-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810721632.5A Active CN108567415B (en) | 2018-07-04 | 2018-07-04 | PH electrode catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108567415B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1268291A (en) * | 1969-06-12 | 1972-03-29 | Moller Glasblaserei Geb | Measuring electrode for measuring of ions in solutions |
| US4166020A (en) * | 1977-05-14 | 1979-08-28 | Pfaudler-Werke A.G. | Measuring probe to determine the ion concentration in liquids |
| US5139641A (en) * | 1989-05-20 | 1992-08-18 | Alfred Neukum | Method of generating a constant derivation potential and a reference electrode in analytical chemistry |
| RU2068710C1 (en) * | 1994-11-14 | 1996-11-10 | Владимир Иванович Маркелов | Ph-probe |
| CN2293832Y (en) * | 1997-03-26 | 1998-10-07 | 西安交通大学 | Multi-point internal reference type digestive tract pH value sensor |
| JP2000338077A (en) * | 1999-05-31 | 2000-12-08 | Shindengen Electric Mfg Co Ltd | Ph sensor |
| WO2004011934A1 (en) * | 2002-07-25 | 2004-02-05 | Testo Ag | Measuring device comprising a grip element |
| CN105708422A (en) * | 2016-04-25 | 2016-06-29 | 重庆金山科技（集团）有限公司 | Medical electrode catheter |
| CN107752983A (en) * | 2017-11-14 | 2018-03-06 | 重庆金山医疗器械有限公司 | A kind of new medical pH electrode catheters |
| CN209059173U (en) * | 2018-07-04 | 2019-07-05 | 重庆金山医疗器械有限公司 | Medical pH electrode catheter |
-
2018
- 2018-07-04 CN CN201810721632.5A patent/CN108567415B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1268291A (en) * | 1969-06-12 | 1972-03-29 | Moller Glasblaserei Geb | Measuring electrode for measuring of ions in solutions |
| US4166020A (en) * | 1977-05-14 | 1979-08-28 | Pfaudler-Werke A.G. | Measuring probe to determine the ion concentration in liquids |
| US5139641A (en) * | 1989-05-20 | 1992-08-18 | Alfred Neukum | Method of generating a constant derivation potential and a reference electrode in analytical chemistry |
| RU2068710C1 (en) * | 1994-11-14 | 1996-11-10 | Владимир Иванович Маркелов | Ph-probe |
| CN2293832Y (en) * | 1997-03-26 | 1998-10-07 | 西安交通大学 | Multi-point internal reference type digestive tract pH value sensor |
| JP2000338077A (en) * | 1999-05-31 | 2000-12-08 | Shindengen Electric Mfg Co Ltd | Ph sensor |
| WO2004011934A1 (en) * | 2002-07-25 | 2004-02-05 | Testo Ag | Measuring device comprising a grip element |
| CN105708422A (en) * | 2016-04-25 | 2016-06-29 | 重庆金山科技（集团）有限公司 | Medical electrode catheter |
| CN107752983A (en) * | 2017-11-14 | 2018-03-06 | 重庆金山医疗器械有限公司 | A kind of new medical pH electrode catheters |
| CN209059173U (en) * | 2018-07-04 | 2019-07-05 | 重庆金山医疗器械有限公司 | Medical pH electrode catheter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108567415A (en) | 2018-09-25 |
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