CN106388761B - A kind of endoscope of mirror front end real-time radio pressure measurement - Google Patents
A kind of endoscope of mirror front end real-time radio pressure measurement Download PDFInfo
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- CN106388761B CN106388761B CN201610908648.8A CN201610908648A CN106388761B CN 106388761 B CN106388761 B CN 106388761B CN 201610908648 A CN201610908648 A CN 201610908648A CN 106388761 B CN106388761 B CN 106388761B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/307—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the urinary organs, e.g. urethroscopes, cystoscopes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00011—Operational features of endoscopes characterised by signal transmission
- A61B1/00016—Operational features of endoscopes characterised by signal transmission using wireless means
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/012—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor
- A61B1/015—Control of fluid supply or evacuation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
- A61B2560/02—Operational features
- A61B2560/0242—Operational features adapted to measure environmental factors, e.g. temperature, pollution
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/0247—Pressure sensors
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Abstract
It is an object of the invention to solve the problems of prior art, a kind of endoscope for the mirror front end real-time radio pressure measurement that need not take waterflood path is found.Including body, light source and camera lens, also include passive and wireless pressure sensor, the controller for controlling water filling and for repeater of the pressure signal transmission that passive and wireless pressure sensor exports to controller, passive and wireless pressure sensor to be arranged on into body front end.Following advantageous effects can be obtained by implementing the present invention：In the case where not increasing the overall dimensions of endoscope, it can be realized in surgical procedure and organ surgery pressure process in human body is monitored in real time, ensure the security of operation.
Description
Technical field
This patent is related to Medical treatment device field, and in particular to a kind of endoscope of mirror front end real-time radio pressure measurement.
Background technology
Since endoscope comes out, particularly Ureteroscopy has become the essential diagnosis and treatment of Urology Surgery
Instrument, it has the advantages that, and easy to operate, damage is small, post-operative recovery is fast, satisfactory effect, is just increasingly being applied to clinic.
However, clinically it has also been found that thering is patient postoperative high fever, septicemia, renal plevis rupture, shock occur after the operation of row ureteroscope, even
The severe complications such as death.One of its reason is preoperative without control urinary infection, and another major reason is renal plevis pressure mistake
It is high：To ensure smoothly to enter mirror and keeping rubble position visual area clear, it must constantly be rinsed, caused with physiological saline in surgical procedure
Renal plevis pressure increases, and renal plevis pressure, which persistently increases, can cause urine and perfusion liquid to exosmose (by renal plevis Venous Reflux, renal plevis lymph
Backflow, renal plevis renal tubule backflows and pyelointerstitial backflow), severe patient also results in kidney week even abdominal cavity, pleural effusion, excessive liquid
Water intoxication can be caused by being absorbed into blood circulation, and the bacterium and endotoxin in urine and calculus enter blood with liquid, so as to
Cause the generation of infectious shock.And renal plevis high pressure in Ureteroscopy be present has been confirmed by broad-mouthed receptacle for holding liquid pressure measurement in art, ureter
There is renal plevis and backflow and cause related complication in mirror, renal plevis high pressure, height in generation that renal plevis backflows and art in clinicing aspect, art
Press the factors such as duration related, and the incidence of postoperative complications is related to injection pressure height and operating time length in art, kidney
Broad-mouthed receptacle for holding liquid pressure can not continue had professional paper determination to a certain extent (60s) more than 4.00kPa.
Water filling for ureteroscope in Ureteroscopy at present or instrument channel are all not only thin but also long.Diameter exists
1.2mm-1.6mm length be more than 600mm water fillings pressure pressure difference very greatly can not correct amount, notification number be 204863067U invention create
Make and disclose a kind of endoscope, the front end for setting pressure sensor body in endoscope body front end has pressure sensor, interior
There is pressure sensor lead in sight glass body, lead is used to provide power supply to pressure sensor and exports pressure signal,
The pressure sensor is used to perceive the hydraulic pressure in the range of surgical field of view, when hydraulic signal reaches preset value, now passes through control
Device controls water filling.The prior art, in water filling or instrument channel insertion pressure sensor lead, occupy water filling or apparatus leads to
Road have impact on endoscope operability.
The content of the invention
It is an object of the invention to solve the problems of prior art, a kind of mirror that need not take waterflood path is found
The endoscope of sub- front end real-time radio pressure measurement.
In order to realize the purpose, a kind of endoscope of mirror front end real-time radio pressure measurement of the present invention, including body, light source
And camera lens, in addition to passive and wireless pressure sensor, the controller for controlling water filling and for by passive and wireless pressure sensing
Repeater of the pressure signal transmission that device exports to controller, the passive and wireless pressure sensor are arranged on body front end.
Preferably, the signal output part of passive and wireless pressure sensor is connected with the metal material of tubular body or outside.
Preferably, the signal receiving end of repeater is connected with the metal material of tubular body or outside so that endoscope tube
Metal material inside or outside body turns into the signal receiving antenna of repeater.
Preferably, repeater is provided with the photosensitive switch for being used for opening/close repeater.
Preferably, the body rear end is provided with handle, and the repeater is arranged at handle.
Preferably, endoscope water filling input pipe is provided with the body, the controller includes the first control unit and first
Pinch valve, the first pinch valve are arranged on endoscope water filling input pipe, and the first control unit is used for passive and wireless pressure sensor
The pressure signal and the pressure ratio of setting measured is compared with when the pressure signal that passive and wireless pressure sensor measures is more than the pressure of setting
During power, water filling input pipe is closed by the first pinch valve.
Preferably, endoscope water filling input pipe and endoscope backwater efferent duct, the controller bag are provided with the body
The second control unit, the second pinch valve and the 3rd pinch valve are included, second pinch valve is arranged on endoscope water filling input pipe, institute
State the 3rd pinch valve to be arranged on endoscope backwater efferent duct, the second control unit is controlled as follows：
Step 1：Set the first normal pressure, the second normal pressure, the 3rd normal pressure and predicted time FT, the 3rd standard
Pressure is more than the second normal pressure, and the second normal pressure is more than the first normal pressure, and FT is more than 1 second and is less than 60 seconds；
Step 2：Second control unit obtains the first pressure signal of passive and wireless pressure sensor output, and records the signal
The acquisition time, by first pressure signal with set the first normal pressure compared with, if being less than the first normal pressure,
Endoscope water filling input pipe is fully opened, and enters step 3；Otherwise, by first pressure signal and the second normal pressure of setting
It is compared, if being less than the second normal pressure, half-open endoscope water filling input pipe, and enter step 3, if first pressure
Signal is greater than or equal to the second normal pressure, then by first pressure signal compared with the 3rd normal pressure set, if
Less than the 3rd normal pressure, then endoscope water filling input water inlet tube is closed, and enter step 3, if above or equal to the 3rd mark
Quasi- pressure, then endoscope water filling input water inlet tube is closed, and open endoscope backwater efferent duct and draw water, and enter step 3；
Step 3：Second control unit obtains next pressure signal P of passive and wireless pressure sensor outputnext, and record and be somebody's turn to do
The acquisition time T of signalnext, obtain a upper pressure signal PbeforeAnd obtain time Tbefore；
If Pnext>Pbefore, then：
Calculate forecast pressure signal FPnext：
FPnext=FT* (Pnext-Pbefore)÷(Tnext-Tbefore)
By forecast pressure signal FPnextCompared with the first normal pressure of setting, if being less than the first normal pressure,
Endoscope water filling input pipe is then fully opened, and enters step 3；Otherwise, by forecast pressure signal FPnextWith the second mark of setting
Quasi- pressure is compared, if being less than the second normal pressure, half-open endoscope water filling input pipe, and enter step 3, if in advance
Pressure measurement force signal FPnextGreater than or equal to the second normal pressure, then by forecast pressure signal FPnextWith the 3rd standard pressure of setting
Power is compared, if being less than the 3rd normal pressure, closes endoscope water filling input water inlet tube, and enters step 3, if high
In or equal to the 3rd normal pressure, then endoscope water filling input water inlet tube is closed, and open endoscope backwater efferent duct and draw water, and
Into step 3；
If Pnext≤Pbefore, then：
Future time FT forecast pressure signal FPnext=Pnext；
By forecast pressure signal FPnextCompared with the second normal pressure of setting, if being less than the second normal pressure,
Then half-open endoscope water filling input pipe, and enter step 3, otherwise, it is directly entered step 3.
Preferably, the FT values are 10 seconds.
Preferably, the FT values are 5 seconds
Preferably, the 3rd normal pressure is safe pressure threshold value, and the first normal pressure is the 80% of the second normal pressure, the
Two normal pressures are the 80% of the 3rd normal pressure.
Following advantageous effects can be obtained by implementing the present invention：In the situation for the overall dimensions for not increasing endoscope
Under, it can be realized in surgical procedure and organ surgery pressure process in human body is monitored in real time, ensure the security of operation.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the embodiment of the present invention 1；
Fig. 2 is the front-end view of the embodiment of the present invention 1；
Fig. 3 is the overall structure diagram of the embodiment of the present invention 2；
Fig. 4 is the front-end view of the embodiment of the present invention 2.
Embodiment
For the ease of the understanding of those skilled in the art, the present invention is made further with reference to specific embodiment
It is bright：
Embodiment 1：
As depicted in figs. 1 and 2, a kind of endoscope of mirror front end real-time radio pressure measurement of the present invention include body 1, light source 2,
Camera lens 3, it is arranged on passive and wireless pressure sensor 4, the controller 5 for controlling water filling and for by passive and wireless pressure sensing
Repeater 6 of the pressure signal transmission that device 4 exports to controller 5.Passive and wireless pressure sensor 4 is arranged on the front end of body 1, in
It is arranged on after device 6 between passive and wireless pressure sensor and controller 5.
In use, the real-time monitoring of environmental pressure of the passive and wireless pressure sensor 4 for being arranged on the front end of body 1, and by pressure
Signal crosses repeater 6 and is wirelessly transmitted to controller 5, passive and wireless pressure sensor 4 can using light source 2 as power source, without
Power supply is separately provided, while can be wirelessly transferred, without setting lead, is not take up the waterflood path of endoscope, improves interior peep
The operability of mirror.
Passive and wireless pressure sensor 4 can use existing passive and wireless pressure sensor, and profile can be according to demand
Depending on, passive and wireless pressure sensor 4 utilizes electromagnetic coupled (load shift keying, LSK) measurement frequency offset information,
Carry out sensed pressure change, using the photoetching technique of semiconductor devices, manufactured on the surface of piezo-electric crystal, oscillator, amplification
The nonlinear devices such as device, sensor is packaged with medical grade PU Ge PI materials, debugs sensor.Passive wireless sensor is straight
Connect and be adhered to reserved location before endoscope, be so very beneficial for sensor assembling and maintenance from now on.
In specific implementation process, the signal output part of passive and wireless pressure sensor 4 and the metal material of body connect,
So that the flexible metal material of endoscope turns into the signal transmission antenna of passive and wireless pressure sensor 4, due to passive and wireless
The overall dimensions of pressure sensor 4 are very small, are micro pressure sensor, and area is less than 0.2 square millimeter, the signal of transmitting
Very weak, the metal material using endoscope tubular body or outside makees signal receiving antenna, is received by repeater 6 passive
After the small-signal of wireless pressure sensor 4, amplify the signal, and signal is transferred out to controller 5 and then improved passive
The transmission intensity of the signal of wireless pressure sensor 4.
In specific implementation process, the rear end of body 1 is provided with handle 7, and repeater 6 is arranged at handle 7, the letter of repeater 6
Number receiving terminal be connected with the metal material of tubular body or outside so that tubular body or outside metal material turn into repeater
6 signal receiving antenna, and then improve the transmission intensity of the signal of passive and wireless pressure sensor 4.
In specific implementation process, repeater 6 is provided with the photosensitive switch for being used for opening/close repeater 6 and (not shown in figure
Go out), photosensitive switch opens repeater 6 after detecting endoscope connection light source 2.
In specific implementation process, endoscope water filling input pipe 8 is provided with body 1, endoscope water filling input pipe 8 can connect
Existing water pump is connect by water pump pressure water injection, can also connection suspension bottle, pressurizeed naturally by hanging bottle, controller 5 includes first
Control unit and the first pinch valve, the first pinch valve are arranged on endoscope water filling input pipe, and the first control unit is used to pass pressure
The pressure signal and the pressure ratio of setting that sensor 4 measures are compared with when the pressure signal that pressure sensor 4 measures is more than the pressure of setting
When, water filling input pipe is closed by the first pinch valve.
Embodiment 2：
As shown in Figure 3 and Figure 4, the difference with embodiment 1 is：
Endoscope water filling input pipe 8 and endoscope backwater efferent duct 9 are provided with body 1, controller 5 includes the second control
Portion, the second pinch valve 51 and the 3rd pinch valve 52, the second pinch valve 51 are arranged on endoscope water filling input pipe 8, the 3rd clamp
Valve 52 is arranged on endoscope backwater efferent duct 9, and the second control unit is controlled as follows：
Step 1：Set the first normal pressure, the second normal pressure, the 3rd normal pressure and predicted time FT, the 3rd standard
Pressure is more than the second normal pressure, and the second normal pressure is more than the first normal pressure, and FT is more than 1 second and is less than 60 seconds；
Step 2：Second control unit obtains the first pressure signal of the output of passive and wireless pressure sensor 4, and records the letter
Number the acquisition time, by first pressure signal with set the first normal pressure compared with, if being less than the first normal pressure,
Endoscope water filling input pipe 8 is then fully opened, and enters step 3；Otherwise, by first pressure signal and the second standard pressure of setting
Power is compared, if being less than the second normal pressure, half-open endoscope water filling input pipe 8, and enter step 3, if first
Pressure signal is greater than or equal to the second normal pressure, then by first pressure signal compared with the 3rd normal pressure set,
If being less than the 3rd normal pressure, close endoscope water filling input pipe 8 and intake, and enter step 3, if above or equal to the
Three normal pressures, then close endoscope water filling input pipe 8 and intake, and open endoscope backwater efferent duct 9 and draw water, while enter step
Rapid 3；
Step 3：Second control unit obtains next pressure signal P of the output of passive and wireless pressure sensor 4next, and record
The acquisition time T of the signalnext, obtain a upper pressure signal PbeforeAnd obtain time Tbefore；
If Pnext>Pbefore, then：
Calculate forecast pressure signal FPnext：
FPnext=FT* (Pnext-Pbefore)÷(Tnext-Tbefore)
By forecast pressure signal FPnextCompared with the first normal pressure of setting, if being less than the first normal pressure,
Endoscope water filling input pipe 8 is then fully opened, and enters step 3；Otherwise, by forecast pressure signal FPnextWith the second of setting
Normal pressure is compared, if being less than the second normal pressure, half-open endoscope water filling input pipe 8, and enter step 3, such as
Fruit forecast pressure signal FPnextGreater than or equal to the second normal pressure, then by forecast pressure signal FPnextWith the 3rd mark of setting
Quasi- pressure is compared, if being less than the 3rd normal pressure, is closed endoscope water filling input pipe 8 and is intake, and enters step 3,
If above or equal to the 3rd normal pressure, then close endoscope water filling input pipe 8 and intake, and open endoscope backwater efferent duct
9 draw water, and enter step 3
If Pnext≤Pbefore, then：
Future time FT forecast pressure signal FPnext=Pnext；
By forecast pressure signal FPnextCompared with the second normal pressure of setting, if being less than the second normal pressure,
Then half-open endoscope water filling input pipe 8, and enter step 3, otherwise, it is directly entered step 3.
FT values can be configured according to actual conditions during specific works, be set as general, can be 10 seconds by FT values
Or 5 seconds.
First normal pressure, the second normal pressure and the 3rd normal pressure can also enter according to the actual conditions of specific works
Row is set, and typically can be safe pressure threshold value by the 3rd normal pressure, and the first normal pressure is the 80% of the second normal pressure,
Second normal pressure is the 80% of the 3rd normal pressure, so sets not only applicable routine operation, and be easy to use personnel
Set, i.e., only the 3rd normal pressure need to be arranged to actual safe pressure threshold value, without setting the first normal pressure again
With the second normal pressure.
When exceeding safe pressure threshold value in organ of performing the operation, drawn water, and then reduce intraorganic pressure of performing the operation, work as hand
When pressure rises in art organ, this patent by predict next second or under the pressure condition of several seconds, according to the pressure condition of prediction,
The control intake and drawn water, and then the purpose prejudged, prevent that operation organ internal pressure power is too high, reduce in operation organ
Pressure reaches the probability of safe pressure threshold value；When organ internal pressure power of performing the operation does not rise, according to the real-time pressure situation measured, enter
Traveling water and the control drawn water, prevent from closing because of anticipation and intake and then influence cleaning performance.This patent is reduced because of surgical device
Operation risk caused by hypertonia and postoperative risk in official, improve the security of operation.
According to the use needs of reality, in this patent, endoscope water filling input pipe 8 also can be by endoscope gas injection input pipe generation
Replace, endoscope backwater efferent duct 9 can also be replaced by endoscope return-air efferent duct.
The specific embodiment of the present invention is the foregoing is only, but the technical characteristic of the present invention is not limited thereto, Ren Heben
The technical staff in field in the field of the invention, all cover among the scope of the claims of the present invention by the change or modification made.
Claims (8)
1. a kind of endoscope of mirror front end real-time radio pressure measurement, including body, light source and camera lens, it is characterised in that：Also include
Passive and wireless micro pressure sensor, the controller for controlling water filling and for passive and wireless micro pressure sensor to be exported
Repeater of the pressure signal transmission to controller, the passive and wireless micro pressure sensor is arranged on body front end；
Endoscope water filling input pipe and endoscope backwater efferent duct are provided with the body, the controller includes the second control
Portion, the second pinch valve and the 3rd pinch valve, second pinch valve are arranged on endoscope water filling input pipe, the 3rd clamp
Valve is arranged on endoscope backwater efferent duct, and the second control unit is controlled as follows：
Step 1：Set the first normal pressure, the second normal pressure, the 3rd normal pressure and predicted time FT, the 3rd normal pressure
More than the second normal pressure, the second normal pressure is more than the first normal pressure, and FT is more than 1 second and is less than 60 seconds；
Step 2：Second control unit obtains the first pressure signal of passive and wireless micro pressure sensor output, and records the signal
The acquisition time, by first pressure signal with set the first normal pressure compared with, if being less than the first normal pressure,
Endoscope water filling input pipe is fully opened, and enters step 3；Otherwise, by first pressure signal and the second normal pressure of setting
It is compared, if being less than the second normal pressure, half-open endoscope water filling input pipe, and enter step 3, if first pressure
Signal is greater than or equal to the second normal pressure, then by first pressure signal compared with the 3rd normal pressure set, if
Less than the 3rd normal pressure, then endoscope water filling input water inlet tube is closed, and enter step 3, if above or equal to the 3rd mark
Quasi- pressure, then endoscope water filling input water inlet tube is closed, and open endoscope backwater efferent duct and draw water, and enter step 3；
Step 3：Second control unit obtains next pressure signal P of passive and wireless micro pressure sensor outputnext, and record and be somebody's turn to do
The acquisition time T of signalnext, obtain a upper pressure signal PbeforeAnd obtain time Tbefore；
If Pnext>Pbefore, then：
Calculate forecast pressure signal FPnext：
FPnext=FT* (Pnext-Pbefore)÷(Tnext-Tbefore)
By forecast pressure signal FPnextIt is complete if being less than the first normal pressure compared with the first normal pressure of setting
Full open endoscope water filling input pipe, and enter step 3；Otherwise, by forecast pressure signal FPnextWith the second standard pressure of setting
Power is compared, if being less than the second normal pressure, half-open endoscope water filling input pipe, and enter step 3, if pre- pressure measurement
Force signal FPnextGreater than or equal to the second normal pressure, then by forecast pressure signal FPnextEnter with the 3rd normal pressure of setting
Row compares, if be less than the 3rd normal pressure, closes endoscope water filling input water inlet tube, and into step 3, if above or
Equal to the 3rd normal pressure, then endoscope water filling input water inlet tube is closed, and open endoscope backwater efferent duct and draw water, and entered
Step 3；
If Pnext≤Pbefore, then：
Future time FT forecast pressure signal FPnext=Pnext；
By forecast pressure signal FPnextCompared with the second normal pressure of setting, if being less than the second normal pressure, half
Endoscope water filling input pipe is driven, and enters step 3, otherwise, is directly entered step 3.
A kind of 2. endoscope of mirror front end real-time radio pressure measurement as claimed in claim 1, it is characterised in that：Passive and wireless is micro-
The signal output part of type pressure sensor is connected with the metal material of tubular body or outside.
A kind of 3. endoscope of mirror front end real-time radio pressure measurement as claimed in claim 1, it is characterised in that：The letter of repeater
Number receiving terminal be connected with the metal material of tubular body or outside so that endoscope tubular body or outside metal material turn into
The signal receiving antenna of repeater.
A kind of 4. endoscope of mirror front end real-time radio pressure measurement as claimed in claim 1, it is characterised in that：Set on repeater
There is the photosensitive switch for opening/closing repeater.
A kind of 5. endoscope of mirror front end real-time radio pressure measurement as claimed in claim 1, it is characterised in that：After the body
End is provided with handle, and the repeater is arranged at handle.
A kind of 6. endoscope of mirror front end real-time radio pressure measurement as claimed in claim 1, it is characterised in that：The FT values are
10 seconds.
A kind of 7. endoscope of mirror front end real-time radio pressure measurement described in claim 1, it is characterised in that：The FT values are 5
Second.
A kind of 8. endoscope of mirror front end real-time radio pressure measurement described in claim 1, it is characterised in that：3rd normal pressure
For safe pressure threshold value, the first normal pressure is the 80% of the second normal pressure, and the second normal pressure is the 3rd normal pressure
80%.
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| CN107440672A (en) * | 2017-07-14 | 2017-12-08 | 广州医科大学附属第医院 | A kind of electronics Flexible ureteroscope and its operating method with real-time pressure monitoring function |
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| CN202515772U (en) * | 2012-03-09 | 2012-11-07 | 程文昌 | Novel hard ureteroscope |
| CN203970336U (en) * | 2014-07-04 | 2014-12-03 | 武汉汉双技术有限公司 | The endoscope assembly of measuring for cavity pressure |
| CN204950936U (en) * | 2015-01-30 | 2016-01-13 | 重庆医科大学附属第一医院 | Alimentary canal cavity pressure real -time monitoring system |
| CN204445869U (en) * | 2015-02-05 | 2015-07-08 | 上海英诺伟医疗器械有限公司 | cavity pressure monitoring device |
| CN204765896U (en) * | 2015-05-29 | 2015-11-18 | 郑州富健达医疗器械有限公司 | Soft footpath of ureter channels into sheath with real time pressure shows and attraction power |
| CN205359423U (en) * | 2015-11-27 | 2016-07-06 | 许可慰 | Take baroreceptor's binary channels ureter nephroscope |
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|---|---|
| CN106388761A (en) | 2017-02-15 |
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