Disclosure of Invention
The embodiment of the invention provides a urinary system pressure measuring device, which aims to solve the technical problems.
The urine collecting device comprises a urine measuring tube for measuring urethral pressure, a placement auxiliary seat for placing and matching the urine measuring tube for auxiliary use, a urine collecting bag for urine collection, a flushing auxiliary measuring device for flushing auxiliary measurement in the bladder, a drug delivery auxiliary device for drug delivery and auxiliary measurement, a puncture connector for connecting the urine measuring tube with the flushing auxiliary measuring device and the drug delivery auxiliary device in a communicating manner, and a urinary system pressure measuring device for measuring pressure in the bladder of a patient, wherein the urine measuring tube is a three-cavity urine measuring tube, the urinary system pressure measuring device mainly comprises a pressure sensor, a signal processing module, a data storage module, a display module and a control unit, the pressure sensor is arranged at the front end of the urine measuring tube, the placement auxiliary seat is horizontally placed, the urine measuring tube can be limited by the placement auxiliary seat, the urine collecting bag is communicated with the tail end of the urine measuring tube, the drug delivery auxiliary device and the flushing auxiliary measuring device are symmetrically arranged on the placement auxiliary seat 2, and the puncture connector is arranged on the placement auxiliary seat 2 and can be communicated with the flushing auxiliary measuring device.
Further, be equipped with on the manometric catheter and carry out spacing sacculus in the bladder through the mode of inflation or water injection, the head end of manometric catheter is equipped with the urine discharge port, the head end of manometric catheter is equipped with medicine and salt solution and annotates and send the discharge port, the end of manometric catheter is collection urine bag connecting pipe, gasbag communicating pipe and medicine salt solution transport wash pipe respectively, all be equipped with the control valve on collection urine bag connecting pipe, gasbag communicating pipe and the medicine salt solution transport wash pipe, medicine and salt solution are annotated and are sent the discharge port and are set up for the intercommunication with the puncture connector, collection urine bag connecting pipe and urine discharge port are the intercommunication setting.
Further, the puncture connector comprises a puncture tube and a puncture needle head, one end of the puncture tube is connected to the drug saline conveying flushing tube in a communicating mode, and the puncture needle is connected to the other end of the puncture tube.
Further, the auxiliary measuring device washes includes auxiliary frame, washing card frame, washing salt water bag, syringe and auxiliary couple, auxiliary frame sets up on placing the auxiliary seat, washing card frame sets up on auxiliary frame washes, the upper end of washing salt water bag is equipped with the link, the link cover on the washing salt water bag is established on auxiliary couple, auxiliary couple sets up on auxiliary frame washes, the sack bottleneck department card of washing salt water bag is established on washing card frame and is prevented washing salt water bag upward movement, be equipped with injection port and this injection port and syringe on the washing salt water bag and can carry out the intercommunication and be connected, the injection port accessible on the washing salt water bag keeps away dirty cap and seals, the inside washing salt water that stores of washing salt water bag.
Further, the auxiliary drug delivery device comprises a drug delivery frame, a drug delivery clamping frame, a drug delivery bag and a drug delivery hook, wherein the drug delivery frame is arranged on the auxiliary placement seat, the drug delivery frame and the auxiliary flushing frame are symmetrically arranged, the drug delivery clamping frame is arranged on the drug delivery frame, the therapeutic drug is arranged inside the drug delivery bag, a hanging ring is arranged at the upper end of the drug delivery bag, the hanging ring at the upper end of the drug delivery bag is sleeved on the drug delivery hook, the drug delivery hook is arranged on the drug delivery frame, and the mouth of the drug delivery bag is clamped on the drug delivery clamping frame and prevents the drug delivery bag from moving upwards.
Further, the placement auxiliary seat is provided with a limiting support, the placement auxiliary seat is provided with a pressure measuring catheter auxiliary groove, and the limiting support on the placement auxiliary seat is provided with an electromagnetic induction sensor.
Furthermore, the pressure measuring catheter can be made of silica gel material, latex material and polyurethane material.
Further, a gravity sensor and a pressure sensor are arranged outside the urine collection bag.
The above at least one technical scheme adopted by the embodiment of the invention can achieve the following beneficial effects:
Firstly, the device can accurately measure the urinary pressure in the bladder of a patient through the pressure measuring urinary catheter, provides key data for diagnosis of urinary system diseases, and can flush impurities, secretion, possible micro coagulum and the like in the urinary system in the process of measuring the urinary pressure. During pressure measurement, the urethra and the inside of the bladder are kept clean, so that the substances can be prevented from blocking the pressure measuring channel of the three-cavity urinary catheter or affecting the accuracy of the pressure sensor, and meanwhile, the three-cavity urinary catheter is used for conveying bladder relaxant such as anticholinergic drugs through the drug conveying auxiliary device, so that the involuntary contraction of the detrusor muscle of the bladder can be restrained, the pressure in the bladder is reduced, the stable drop of the pressure in the bladder can be intuitively observed in the pressure measurement process, and the improvement condition of the bladder function of a patient suffering from overactive bladder under the action of the drugs can be evaluated.
Secondly, in the operation process of measuring the pressure in the bladder of a patient, the flushing saline bag is sleeved on the auxiliary hook through the hanging ring at the upper end, the mouth of the bag opening of the flushing saline bag is clamped on the flushing clamping frame and prevented from moving upwards, then the flushing saline bag opening is inserted into the flushing saline bag opening through the puncture needle, at the moment, the medicine and saline injection discharge hole and the puncture connector are in a communicated state, then the injector is connected to the injection hole on the flushing saline bag, and saline stored in the flushing saline bag is conveyed through the three-cavity urinary catheter through the injector in an injection mode, so that the liquid quantity in the urinary system can be supplemented by injecting the saline in the measurement process of the pressure measuring catheter, the normal physiological functions of the bladder and the urinary tissue can be maintained, interference to the pressure measurement caused by water shortage or electrolyte disturbance can be avoided, the actual state of the urinary system can be truly reflected by the pressure measurement result, and impurities such as urine, secretion and blood clots can exist in the urinary system.
Thirdly, in the process of pressure measurement operation in the bladder of a patient, a relaxant (such as anticholinergic medicine) can be injected into the medicine conveying bag, the medicine conveying bag is sleeved on the medicine conveying hook through a hanging ring at the upper end, the bag mouth of the medicine conveying bag is clamped on a medicine conveying clamping frame and prevented from moving upwards, then the medicine conveying bag is inserted into the medicine conveying bag through a puncture needle through the mouth of the medicine conveying bag, at the moment, the medicine and saline water injection discharge hole and the puncture connector are in a communicating state, so that the bladder relaxant (such as anticholinergic medicine) is conveyed through the puncture connector through a three-cavity urinary catheter through the medicine conveying bag, the involuntary contraction of the bladder detrusor muscle can be restrained through the conveying of the medicine, the bladder pressure can be reduced, the stable decrease of the bladder pressure can be visually observed in the pressure measurement process, the improvement condition of the bladder function of a patient with overactive bladder can be helped, and conversely, if the bladder contraction promoter (such as anticholinergic medicine) is conveyed, the bladder contraction force can be enhanced, the bladder pressure can be increased, and the bladder pressure can be used for detecting the detrusor the reaction of the bladder and the reserve of the detrusor the bladder can be assessed.
Fourth, when carrying out the uroflow rate detection operation, be equipped with electromagnetic induction sensor on the spacing support on the auxiliary seat according to placing for after the pressure measurement catheter middle part card was put and is carried out spacing on spacing support, can form a magnetic field around pressure measurement catheter middle part, when urine in the pressure measurement catheter passed through, the electromagnetic induction sensor was adopted, this kind of sensor can be perceived and urinate the passageway around because of the electromotive force change that the ion produced under the effect of magnetic field in the urine, when the urine passed through the magnetic field region, the removal cutting magnetic induction line of ion, according to electromagnetic induction law, can produce induced electromotive force, electromagnetic induction sensor catches this electromotive force signal, and give the uroflow rate appearance with its transmission. The urine flow rate meter calculates the speed and flow of urine flow by using a specific algorithm according to the magnitude of the electromotive force and the change condition with time, and finally obtains the urine flow rate. The system can accurately detect weak electromotive force signals and provide key data for measuring the urine flow rate.
Fifthly, when the urine flow rate detection operation is carried out, the gravity sensor and the pressure sensor are arranged outside the urine collection bag to detect, the working principle is that when a patient urinates, urine flows into the special urine collection bag, the urine collection bag transfers the gravity of the urine to the pressure sensor connected with the urine collection bag in the urine collection process, the pressure sensor changes the electrical characteristics of a sensitive element in the sensor according to the gravity sensing principle when the gravity of the urine is acted, and then corresponding electric signal change is generated, the change amplitude of the electric signal is in direct proportion to the weight of the urine, the generated electric signal is transmitted to the urine flow rate meter, the time for collecting the urine is recorded by the urine flow rate meter through the built-in clock module, the weight change of the urine collected by the urine collection device in unit time is calculated by combining the electric signal change, the urine flow rate meter calculates the urine flow rate based on the weight change of the urine collected by the urine collection device in unit time, and firstly, the instrument obtains the change quantity of the urine weight by measuring and calculates the change rate of the weight by combining corresponding time intervals. Then, according to the density characteristic of urine, the weight change rate is converted into the volume change rate, so that the urine flow rate is obtained, the calculation method can accurately reflect the urination condition of a patient, reliable data support is provided for diagnosis and treatment of urinary system diseases, and the method can be combined with the use of the electromagnetic induction sensor to achieve a urine flow rate detection average value, so that the urine flow rate detection data is accurately calculated, and the accuracy of the detection data is greatly improved.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments of the present invention and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The following describes in detail the technical solutions provided by the embodiments of the present invention with reference to the accompanying drawings.
The embodiment of the invention provides a urinary system pressure measuring device, which comprises a pressure measuring urinary catheter 1 for measuring urinary pressure, a placement auxiliary seat 2 for placing and matching auxiliary use of the pressure measuring urinary catheter 1, a urine collecting bag 24 for urine collection, a flushing auxiliary measuring device 3 for flushing auxiliary measurement in the urinary bladder, a drug delivery auxiliary device 4 for drug delivery and auxiliary measurement, a puncture connector 5 for connecting the pressure measuring urinary catheter 1 with the flushing auxiliary measuring device 3 and the drug delivery auxiliary device 4 and a urinary system pressure measuring device 6 for measuring pressure in the urinary bladder of a patient, wherein the pressure measuring urinary catheter 1 is a three-cavity pressure measuring urinary catheter 1, the urinary system pressure measuring device 6 mainly comprises a pressure sensor, a signal processing module, a data storage module, a display module and a control unit, the pressure sensor is arranged at the front end of the pressure measuring urinary catheter 1, the placement auxiliary seat 2 is horizontally arranged, the urinary catheter 1 can be limited by the placement auxiliary seat 2, the urine collecting bag 24 is communicated with the tail end of the urinary catheter 1, the drug delivery auxiliary device 4 and the flushing auxiliary measuring device 3 are symmetrically arranged on the placement auxiliary seat 2, and the puncture connector 2 is communicated with the flushing auxiliary measuring device 4.
The device can accurately measure the pressure of the urethra through the pressure measuring urinary catheter 1, provides key data for diagnosing urinary system diseases, can flush impurities, secretion, possible micro coagulum and the like in the urinary system in the process of measuring the pressure of the urethra, keeps the urethra and the inside of the urinary bladder clean during pressure measurement, can prevent the substances from blocking the pressure measuring channel of the three-cavity urinary catheter or affecting the accuracy of a pressure sensor, simultaneously, can transfer bladder relaxant (such as anticholinergic drugs) to the three-cavity urinary catheter through the drug transfer auxiliary device 4, can inhibit involuntary contraction of bladder detrusor, reduces the pressure of the urinary bladder, can intuitively observe stable drop of the pressure of the urinary bladder in the process of measuring the pressure, and is beneficial to evaluating the improvement condition of the bladder function of patients with overactive bladder under the action of drugs.
When the pressure measurement operation is performed in the bladder of the patient, the signal processing module, the data storage module, the display module and the control unit are first integrated in a miniaturized main housing and the modules are connected by corresponding circuit connection lines. The wireless communication module is installed, normal communication between the wireless communication module and the control unit is ensured, medical staff enters a setting interface through the touch display screen, the parameters such as the time interval of pressure measurement, the time length of data storage and the like are set according to the specific condition and the measurement requirement of a patient, the pressure sensor is calibrated, the accuracy of measured data is ensured, at the moment, the medical staff smears lubricant on the head end of the pressure measuring urinary catheter 1, inserts the head end of the pressure measuring urinary catheter 1 into the urinary system of the patient through the urethra, then starts the control unit, the pressure sensor starts to detect pressure change in the urinary system in real time, signals are transmitted to the signal processing module, the processed pressure data are stored in the data storage module on one hand, on the other hand, the pressure data are displayed on the display module in real time, in the measuring process, the medical staff can check the current pressure value and change curve through the touch display screen at any time, the historical data can also be queried, if necessary, the data can be transmitted to external equipment through the wireless communication module, after the measurement is finished, the doctor can derive the pressure data from the data storage module, further analyze and process the data through professional data analysis software, such as pressure peak trend graph, calculation, pressure change graph, pressure average trend graph, accurate measurement, and the data can be provided for diagnosing the urinary bladder system, and the internal system accurate diagnosis of the disease, and the urinary bladder system are provided for the disease, accurate diagnosis, and the critical data, the system is provided for the system, and the accurate data of the measurement peak trend, and the system of the urinary system, and the disease is more accurate, and the diagnosis is provided for the diagnosis, and the system for the disease of the urinary system, and the diagnosis, and the disease is diagnosis, and the diagnosis system is provided
Preferably, the pressure measuring catheter 1 is provided with a limiting saccule 11 which is limited in the bladder in a mode of inflation or water injection, the head end of the pressure measuring catheter 1 is provided with a urine discharge hole 12, the head end of the pressure measuring catheter 1 is provided with a medicine and saline injection discharge hole 13, the tail end of the pressure measuring catheter 1 is respectively provided with a urine collecting bag connecting pipe 14, an air bag connecting pipe 15 and a medicine saline delivery flushing pipe 16, the urine collecting bag connecting pipe 14, the air bag connecting pipe 15 and the medicine saline delivery flushing pipe 16 are respectively provided with a control valve 17, the medicine and saline injection discharge hole 13 is communicated with the puncture connector 5, and the urine collecting bag connecting pipe 14 is communicated with the urine discharge hole 12;
When the pressure measurement is carried out by stretching the pressure measuring catheter 1 into the bladder, the control valve 17 on the urine collecting bag connecting pipe 14 and the drug saline delivery flushing pipe 16 can be closed, and then the limiting saccule 11 is inflated by injecting or inflating the air bag communicating pipe 15, so that the pressure measuring catheter 1 is limited in the patient body through the limiting saccule 11, and the measurement operation is facilitated.
Preferably, the puncture connector 5 comprises a puncture tube 51 and a puncture needle 52, one end of the puncture tube 51 is connected to the drug saline delivery flushing tube 16 in a communicating way, the puncture needle is connected to the other end of the puncture tube 51, the flushing auxiliary measuring device 3 comprises a flushing auxiliary frame 31, a flushing clamping frame 32, a flushing saline bag 33, an injector 34 and an auxiliary hook 35, the flushing auxiliary frame 31 is arranged on the auxiliary placing seat 2, the flushing clamping frame 32 is arranged on the flushing auxiliary frame 31, a hanging ring is arranged at the upper end of the flushing saline bag 33, the hanging ring on the flushing saline bag 33 is sleeved on the auxiliary hook 35, the auxiliary hook 35 is arranged on the flushing auxiliary frame 31, a mouth of the flushing saline bag 33 is clamped on the flushing clamping frame 32 and prevents the flushing saline bag 33 from moving upwards, a flushing port is arranged on the flushing saline bag 33 and can be connected with the injector 34 in a communicating way, the flushing port on the flushing saline bag 33 can be blocked by a dirt-avoiding cap, and the flushing saline bag 33 is stored inside the flushing saline bag 33;
In the process of pressure measurement operation in the bladder of a patient, the flushing saline bag 33 is sleeved on the auxiliary hook 35 through a hanging ring at the upper end, the mouth of the bag mouth of the flushing saline bag 33 is clamped on the flushing clamping frame 32 and the flushing saline bag 33 is prevented from moving upwards, then the flushing saline bag 33 is penetrated through the opening of the flushing saline bag 33 through the puncture needle 52, at the moment, the medicine and saline injection discharge hole 13 and the puncture connector 5 are in a communicating state, then the injector 34 is connected with the injection opening on the flushing saline bag 33, and saline stored in the flushing saline bag 33 is connected through a three-cavity urinary catheter through the injection of the injector 34, so that the saline injection can supplement the liquid quantity in the urinary system in the measurement process of the urinary catheter 1, the normal physiological functions of the bladder and the urinary system caused by unbalance, water loss and the like are prevented from being caused, the stable internal environment is helpful for keeping the normal physiological functions of the urinary system, the interference on the pressure measurement caused by water shortage or electrolyte disturbance is avoided, the pressure measurement result can truly reflect the actual state of the urinary system, and impurities in the urinary system, blood coagulation blocks and the physiological saline can exist in the urinary system can be transported through a three-cavity urinary system;
When the pressure is measured, the inside of the urethra and the bladder is kept clean, the substances can be prevented from blocking the pressure measuring channel of the three-cavity urinary catheter or affecting the accuracy of the pressure sensor, the pressure sensor can accurately sense the pressure change in the urinary system through flushing, the reliability of pressure measurement data is improved, and the pressure in the bladder and the injected physiological saline quantity are synchronously monitored in the process of continuously injecting the physiological saline. The bladder compliance is evaluated by drawing a pressure-capacity curve and calculating the slope of the curve, and under normal conditions, when the bladder compliance is good, the pressure in the bladder rises more gradually along with the increase of the injection amount of physiological saline, and the slope of the pressure-capacity curve is smaller. If the bladder compliance is reduced, such as in the case of disease states such as bladder fibrosis, the pressure in the bladder is increased rapidly along with the injection of physiological saline, the slope of the pressure-volume curve is increased, after the injection of physiological saline to make the bladder reach a certain filling degree, the injection is stopped, the change condition of the pressure in the bladder in a period of time is observed, the time required for the pressure to drop from the peak value to a certain stable level and the amplitude of the pressure drop are measured, thereby evaluating the pressure reserve capacity of the bladder, the pressure reserve capacity reflects the capacity of the bladder to maintain relatively stable pressure after filling, and has an important meaning for judging whether the bladder function is normal or not, during the injection of physiological saline, the detection of the urinary flow rate and the measurement of the urinary pressure distribution are combined, the change of the pressure in each part of the urethra and the change of the urinary flow rate when the urine flows out are observed, the response condition of the urinary flow resistance in the pressure change process of the bladder can be dynamically evaluated by analyzing the data, for example, if the urinary flow rate does not increase along with the increase of the pressure in the bladder after the injection of physiological saline, and the abnormal increase of the pressure in certain parts indicates that the obstruction and the position of the urinary obstruction may exist.
Preferably, the auxiliary drug delivery device 4 comprises a drug delivery frame 41, a drug delivery clamping frame 42, a drug delivery bag 43 and a drug delivery hook 44, wherein the drug delivery frame 41 is arranged on the auxiliary placement seat 2, the drug delivery frame 41 and the auxiliary flushing frame 31 are symmetrically arranged, the drug delivery clamping frame 42 is arranged on the drug delivery frame 41, a therapeutic drug is arranged in the drug delivery bag 43, a hanging ring is arranged at the upper end of the drug delivery bag 43, the hanging ring at the upper end of the drug delivery bag 43 is sleeved on the drug delivery hook 44, the drug delivery hook 44 is arranged on the drug delivery frame 41, and the mouth of the bag mouth of the drug delivery bag 43 is clamped on the drug delivery clamping frame 42 and prevents the drug delivery bag 43 from moving upwards;
In the process of pressure measurement operation in the bladder of a patient, a relaxant (such as anticholinergic drug) can be injected into the drug delivery bag 43, the drug delivery bag 43 is sleeved on the drug delivery hook 44 through a hanging ring at the upper end, the mouth of the bag mouth of the drug delivery bag 43 is clamped on the drug delivery clamping frame 42 and the drug delivery bag 43 is prevented from moving upwards, then the drug delivery bag 43 is inserted into the inside of the bag through the mouth of the drug delivery bag 43 through the puncture needle 52, at the moment, the drug and saline injection discharge hole 13 and the puncture connector 5 are in a communicating state, so that the bladder relaxant (such as anticholinergic drug) can be delivered through the three-cavity urinary catheter through the puncture connector 5 by the drug delivery bag 43, the involuntary contraction of the bladder detrusor can be restrained by the drug delivery, the bladder internal pressure can be reduced, the smooth decrease of the bladder internal pressure can be intuitively observed in the pressure measurement process, the improvement condition of the bladder function of a patient under the drug effect can be helped, on the condition that the bladder internal bladder contraction promoter (such as anticholinergic drug) can be enhanced, the bladder internal pressure detrusor the bladder contraction force can be detected, and the bladder response can be used for the assessment of the bladder internal bladder contraction can be used for the assessment of the bladder response and the reserve function;
In the process of delivering the medicine through the three-cavity urinary catheter, the change curve of the pressure in the urinary bladder along with time is continuously monitored, the acting time, acting duration and pharmacokinetic characteristics of the medicine on the local part of the urinary bladder can be calculated indirectly according to the speed, amplitude and time reaching peak value or stable state of the pressure change, for example, the acting time of the pressure in the urinary bladder reaching maximum pressure after using the bladder contraction promoter can be estimated by measuring the acting time of the pressure in the urinary bladder, the acting duration of the pressure to the baseline level can be known, the acting time of the medicine can also be known, the pressure in the urinary bladder and the corresponding change of the urinary bladder capacity can be measured repeatedly, the compliance of the urinary bladder can be dynamically evaluated by analyzing the slope change of the pressure-capacity curve, for example, if the slope of the pressure-capacity curve is reduced, the compliance of the urinary bladder is improved, the effect of the urinary bladder is suggested, the medicine has positive influence on the elasticity and the relaxation function of the urinary bladder is provided, for diagnosing and treating the abnormal related diseases { such as the relaxation agent or the contraction agent }, the change of the urinary urethra is measured, the change of the urinary flow rate is detected, the change of the urinary flow rate before and after the drug delivery of the medicine is carried, the change of the urinary flow rate is measured, the change of the urinary flow rate is improved, and the urinary channel is greatly improved, and the effect of the urinary channel performance is greatly improved, and the effect of the urinary channel is improved, for the effect of the change is assessed is greatly is improved.
Preferably, the placement auxiliary seat 2 is provided with a limit bracket 21, the placement auxiliary seat 2 is provided with a pressure measuring catheter auxiliary groove 22, and the limit bracket 21 on the placement auxiliary seat 2 is provided with an electromagnetic induction sensor 23;
When the urine flow rate detection operation is carried out, the electromagnetic induction sensor 23 is arranged on the limiting support 21 on the placement auxiliary seat 2, so that after the middle part of the pressure measuring urine tube 1 is clamped on the limiting support 21 for limiting, a magnetic field is formed around the middle part of the pressure measuring urine tube 1, when urine in the pressure measuring urine tube 1 passes through, the electromagnetic induction sensor 23 is adopted, the sensor can sense the change of electromotive force generated by ions in urine in a urine discharge channel under the action of the magnetic field, when the urine passes through a magnetic field area, the movement of the ions cuts a magnetic induction line, according to the law of electromagnetic induction, induced electromotive force can be generated, the electromagnetic induction sensor 23 captures an electromotive force signal and transmits the electromotive force signal to a urine flow rate instrument, the urine flow rate instrument calculates the speed and flow rate of the urine flow by utilizing a specific algorithm according to the size and the change condition of the electromotive force, and weak electromotive force signals can be accurately detected, and key data are provided for the measurement of the urine flow rate.
Preferably, the pressure measuring catheter 1 is made of silica gel material, latex material and polyurethane material;
the pressure measuring catheter 1 can be made of silica gel material, latex material and polyurethane material:
Silica gel is a common three-cavity pressure measuring urinary catheter 1 material. The catheter has excellent biocompatibility, has little stimulation to human tissues, can reduce discomfort and infection risk of a patient during the period of indwelling a catheter, has good flexibility, can conform to physiological bending of the urethra in the process of inserting the catheter into the urethra and the bladder, and reduces damage to urethral mucosa. The silica gel material has stable chemical property and strong corrosion resistance, ensures the durability of the urinary catheter in a complex in-vivo environment, can be left for a long time, and is suitable for patients needing long-time pressure monitoring;
Latex materials, namely latex, is widely applied to manufacturing of urinary catheters, has relatively low cost and soft texture, can be attached to the urethra to a certain extent, and is convenient for insertion operation. However, some patients may be allergic to latex to cause allergic reaction, which limits the application range, and in addition, the latex may be aged and hardened in the long-term use process, which affects the performance of the catheter and comfort of the patient, so that when the three-cavity pressure measuring catheter 1 made of latex is selected, the allergic history of the patient needs to be confirmed in advance;
Polyurethane material polyurethane has good balance between strength and flexibility. The catheter wall is thinner, so that the urine circulation space can be increased while the stability of the catheter structure is ensured, and the smooth drainage and pressure transmission of urine during pressure measurement are facilitated. The material has smooth surface, can reduce friction with urethra tissues and reduce urethra injury risk, and meanwhile, polyurethane has certain resistance to chemical substances and microorganisms, is favorable for maintaining the cleanness and the function of a urinary catheter, and is more applied to some high-end three-cavity pressure measuring urinary catheter 1 products.
Preferably, a gravity sensor and a pressure sensor are arranged outside the urine collection bag 24;
When the urine flow rate detection operation is carried out, the gravity sensor and the pressure sensor are arranged outside the urine collection bag 24 to detect, the working principle is that when a patient urinates, urine flows into the special urine collection bag 24, the urine collection bag 24 transmits the gravity of the urine to the pressure sensor connected with the urine collection bag in the urine receiving process, the pressure sensor changes the electrical characteristics of a sensitive element in the sensor according to the gravity sensing principle when the gravity of the urine acts on the pressure sensor, and then the corresponding electric signal change is generated, the change amplitude of the electric signal is in direct proportion to the weight of the urine, the generated electric signal is transmitted to the urine flow rate instrument, the time for collecting the urine is recorded by the urine flow rate instrument through the built-in clock module, the weight change of the urine collected by the urine collector in unit time is calculated by combining the electric signal change, the urine flow rate instrument calculates the urine flow rate based on the weight change of the urine collected by the urine collector in unit time, firstly, the instrument obtains the change quantity of the weight of the urine by measuring and calculates the change rate of the weight of the urine according to the density characteristic of the urine, and then converts the weight change rate into the volume change rate according to the density characteristic of the urine, so that the urine flow rate can be accurately reflected by the accurate data of the urine flow rate sensor, and the accurate detection method can be accurately detected by the detection system, and the urine flow rate can be accurately detected by the detection method is provided by the system, and the detection method is provided by the accurate data.
The foregoing is merely exemplary of the present invention and is not intended to limit the present invention. Various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are to be included in the scope of the claims of the present invention.