CN118178745A - Three-cavity temperature measuring catheter - Google Patents

Abstract

The invention provides a three-cavity temperature measuring catheter, which belongs to the technical field of catheters, and mainly aims at the problem that the temperature measuring sensitivity is affected by a PVC sleeve wrapped on a traditional catheter temperature measuring chip; the insertion part, the hose and the fixing part are respectively provided with a urethral catheterization cavity, a temperature measurement cavity and a gas transmission cavity which are connected with each other; one end of the hose, which is far away from the fixing part, is provided with a three-cavity connecting piece, and one ends of the urethral catheterization cavity, the temperature measurement cavity and the gas transmission cavity are all connected with the three-cavity connecting piece; through the setting of temperature measurement subassembly, through urine and temperature probe direct contact in the catheterization leads to the intracavity, the parcel has the problem that the PVC cover influences the temperature measurement sensitivity on having solved traditional catheter temperature measurement chip, has realized higher temperature measurement accuracy.

Description

Three-cavity temperature measuring catheter

Technical Field

The invention belongs to the technical field of catheters, and particularly relates to a three-cavity temperature measuring catheter.

Background

The catheter is widely applied in the medical field, can be remained in the urethra of a patient for a long time and is used for drainage and monitoring of urine; the monitoring of the body temperature is also an important content of clinical medical care work, and the change of the body temperature has very important clinical significance for clear diagnosis, disease judgment and curative effect analysis.

According to the Chinese patent of the utility model with the patent number 201821481145.8, a novel temperature measuring catheter is provided, the catheter is provided with a hose, a drainage cavity, a temperature sensor and a transmission line, the hose is inserted into the bladder of a patient when the catheter is used, urine is led into the drainage cavity, then the temperature of the urine is detected by the temperature sensor, and temperature data is transmitted by the transmission line; however, the traditional catheter is arranged in the drainage cavity of the catheter, and the temperature measuring chip is wrapped with the PVC sleeve to influence the sensitivity of temperature measurement, so that the temperature measurement temperature is not true enough.

Disclosure of Invention

In order to solve the technical problems, the invention provides a three-cavity temperature measuring catheter, which aims to solve the technical problems that in the prior art, a traditional and traditional catheter is arranged in a drainage cavity of the catheter, and a PVC sleeve is wrapped on a temperature measuring chip to influence the sensitivity of temperature measurement, so that the temperature measurement temperature is not real enough.

The invention discloses a three-cavity temperature measuring catheter, which is characterized by comprising the following specific technical means:

The three-cavity temperature measuring catheter comprises a three-cavity connecting piece and a catheter body, wherein the catheter body comprises an insertion part, a fixing part and a hose, one end of the insertion part is provided with a temperature measuring component, and the fixing part is provided with a fixing component; the insertion part, the hose and the fixing part are respectively provided with a urethral catheterization cavity, a temperature measurement cavity and a gas transmission cavity which are connected with each other; the one end that the hose kept away from the fixed part is provided with three chambeies connecting piece, the catheterization lead to chamber, temperature measurement lead to the chamber with the one end in defeated gas lead to the chamber all with three chambeies connecting piece are connected, still be provided with drainage subassembly on the catheter body.

In a preferred embodiment, the temperature measuring assembly comprises a mounting part, one end of the insertion part is provided with the mounting part, the mounting part is provided with a mounting hole, a temperature probe is arranged in the mounting hole in a penetrating manner, a temperature measuring chip is arranged in the mounting part, and one side of the temperature measuring chip is connected with the temperature probe; the temperature measurement range of the temperature probe 23 is 25-45 ℃, and the diameter is 0.6 mm.

In a preferred embodiment, the temperature measuring assembly further comprises a temperature measuring cavity pipe, the bottom of the three-cavity connecting piece is provided with the temperature measuring cavity pipe, the temperature measuring cavity pipe is of a hollow pipe structure, the three-cavity connecting piece is provided with a through cavity for communicating the temperature measuring cavity pipe with the temperature measuring through cavity, and one side of the temperature measuring chip is connected with a wire.

In a preferred embodiment, one end of the temperature measuring cavity pipe far away from the three-cavity connecting piece is connected with a wiring hose, one end of the wiring hose is provided with a connector lug, the wire penetrates through the temperature measuring cavity to be connected with the temperature measuring cavity pipe and the wiring hose to be connected with the connector lug, and a connecting port is arranged on the connector lug.

In a preferred embodiment, the fixing assembly comprises a fixing air bag, the outer surface of the fixing part is provided with the fixing air bag, a first air conveying hole is formed in the top of the fixing part, and the air conveying through cavity is communicated with the fixing air bag through the first air conveying hole.

In a preferred embodiment, the fixing assembly further comprises an air transmission cavity pipe, the top of the three-cavity connecting piece is provided with the air transmission cavity pipe, the three-cavity connecting piece is provided with a through hole, one end of the air transmission cavity pipe is communicated with the air transmission ventilation cavity through the through hole, and the other end of the air transmission cavity pipe is provided with an inflation connector.

In a preferred embodiment, the pumping joint is provided with a second air delivery hole, and the pumping joint is further sleeved with a sealing sleeve, and the sealing sleeve seals the second air delivery hole.

In a preferred embodiment, the drainage assembly comprises two groups of catheterization inlets, the catheterization inlets are respectively arranged on two sides of the insertion portion, and the two groups of catheterization inlets are communicated with the catheterization cavity.

In a preferred embodiment, the drainage assembly further comprises a catheter cavity, one end of the three-cavity connecting piece is provided with the catheter cavity, the catheter cavity is communicated with the catheter cavity, and the inner wall of the catheter cavity is provided with a connecting clamp recess.

In a preferred embodiment, the insertion portion, the fixing portion and the hose are made of transparent silica gel, and an insertion end is disposed at one end of the insertion portion away from the fixing portion.

Compared with the prior art, the invention has the following beneficial effects:

1. Through the arrangement of the temperature measuring assembly, when the catheter is used, the temperature probe and the temperature measuring chip are arranged in the mounting part, and urine in the catheter cavity is in direct contact with the temperature probe, so that the urine is subjected to temperature detection, the problem that the PVC sleeve is wrapped on the traditional catheter temperature measuring chip to influence the temperature measuring sensitivity is solved, and higher temperature measuring precision is realized; by separating the temperature measurement through cavity from the urethral catheterization through cavity, the independence of the temperature measurement through cavity is realized, and the temperature measurement through cavity is ensured not to be influenced by urine and other factors; the temperature data can be transmitted to the central monitoring system in real time by arranging the lead and the connection port to be connected to the monitor.

2. Through the arrangement of the fixing component, when the catheter is used, the catheter can be stably remained in a human body through the mutual matching of the fixing air bag and the air delivery cavity tube; the fixed gasbag aerify and the bleeder can be realized easily through the joint of inflating, and the leakproofness of gas input can be ensured to the sealed external member, has strengthened convenience and the security in the use.

3. Through the arrangement of the drainage component, when the catheter is used, urine can be smoothly drained through the arrangement of the catheter cavity and the two groups of catheter inlets; all parts of the catheter body are made of transparent silica gel, so that flexibility and durability of the product are improved, visibility of the product is improved, smoothness of insertion is improved through arrangement of the insertion end, comfort level of use of a patient is improved, and uncomfortable feeling in the intubation process is reduced.

Drawings

FIG. 1 is a schematic diagram of an assembled three-chamber temperature measuring catheter of the present invention;

FIG. 2 is a schematic diagram of the structure of a three-chamber temperature measuring catheter of the present invention after deployment;

FIG. 3 is a schematic diagram of an assembled temperature measurement assembly of a three-chamber temperature measurement catheter according to the present invention;

FIG. 4 is a schematic diagram of a three-cavity temperature measurement catheter according to the present invention with a split temperature measurement assembly;

FIG. 5 is an enlarged schematic view of area a of FIG. 4;

FIG. 6 is a schematic view of the structure of the three-chamber temperature measuring catheter of the present invention after the fixing assembly is disassembled;

FIG. 7 is a schematic diagram of an assembled drainage assembly in a three-chamber temperature measuring catheter of the present invention;

FIG. 8 is a schematic view of the disassembled structure of FIG. 6;

fig. 9 is a front view of a three-lumen thermometric urinary catheter of the present invention.

In the figure, the correspondence between the component names and the drawing numbers is:

11. An insertion section; 12. a fixing part; 13. a hose; 14. a urinary catheter lumen; 15. temperature measurement through cavity; 16. the air is conveyed to the cavity; 17. a three-chamber connector; 18. inserting a tip; 21. a mounting part; 22. a mounting hole; 23. a temperature probe; 24. a temperature measuring chip; 25. a temperature measuring cavity tube; 26. a wire; 27. a connection hose; 28. a connector lug; 29. a connection port; 31. fixing the air bag; 32. a first gas delivery port; 33. an air delivery lumen; 34. an inflation connector; 35. a second gas delivery port; 36. a sealing sleeve; 41. a urinary catheterization inlet; 42. a urinary catheter; 43. the connecting clamp is concave.

Detailed Description

Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the technical scheme of the present invention, but are not intended to limit the scope of the present invention.

Examples:

As shown in fig. 1 to 9: the invention provides a three-cavity temperature measuring catheter which comprises a catheter body, wherein the catheter body consists of an insertion part 11, a fixing part 12 and a hose 13, one end of the insertion part 11 is provided with a temperature measuring component for realizing body temperature monitoring, and the fixing part 12 is provided with a fixing component for fixing the position of the catheter; three channels are arranged in the catheter body and are respectively a catheter through cavity 14, a temperature measurement through cavity 15 and a gas transmission through cavity 16, wherein the catheter through cavity 14 penetrates through the whole catheter to realize the catheterization function, the temperature measurement through cavity 15 is arranged in the insertion part 11 and is separated from the catheter through cavity 14 to ensure that the catheter is only contacted with the inner wall of a human body, so that independent body temperature monitoring is realized without being influenced by a catheter liquid, the gas transmission through cavity 16 penetrates through the catheter, and the position of the fixing part 12 is adjusted through an external gas transmission system to ensure the fixing and the use comfort of the catheter; through the independent arrangement of the three-cavity design and each channel, the catheter realizes the combination of catheterization and body temperature monitoring, and ensures the accuracy and the independence of the temperature measurement through cavity 15, thereby realizing multi-parameter monitoring while ensuring the basic catheterization function.

The hose 13 is a main body part connecting the insertion part 11 and the fixing part 12, one end far away from the fixing part 12, and the hose 13 is provided with a three-cavity connecting piece 17; the three-cavity connecting piece 17 is a key node of the three-cavity catheter, and enables the catheter cavity 14, the temperature measurement cavity 15 and the gas transmission cavity 16 to be connected, specifically, the catheter cavity 14, the temperature measurement cavity 15 and the gas transmission cavity 16 are all connected with the three-cavity connecting piece 17 at one end of the hose 13, so that connectivity of three channels in the whole catheter is ensured; in addition, the catheter body is also provided with a drainage component, and the drainage component is arranged at the tail end of the catheter cavity 14, so that the drainage component can help guide the urine of a patient to be normally discharged, thereby playing the role of catheterization; through three chamber connecting pieces 17 and drainage subassembly, this catheter will be three independent passageway effective connection, has still realized the catheterization function simultaneously.

Referring to fig. 3, 4 and 5, the temperature measuring component is a key part of the three-cavity catheter for realizing body temperature monitoring, and comprises a mounting part 21 and a temperature probe 23; the mounting part 21 is arranged at one end of the insertion part 11, a mounting hole 22 is formed in the mounting part 21, a temperature probe 23 with the diameter of 0.6mm is arranged in the mounting part, the temperature probe 23 adopts an NTC sensing head with low heat capacity and is directly contacted with human urine, and the high-precision measurement of the body temperature in the range of 25-45 ℃ is realized; the temperature measuring chip of the traditional catheter is often wrapped in the PVC sleeve, the temperature measuring sensitivity is not high due to the influence of materials, the NTC sensing head adopted by the catheter is directly contacted with urine, the influence of other factors is avoided, and the temperature measuring precision is greatly improved; a temperature measuring chip 24 is further arranged in the mounting part 21, one end of the temperature measuring chip 24 is connected with the temperature probe 23, so that the acquisition and the processing of the body temperature signals acquired by the temperature probe 23 are realized, and the resistance value of the NTC sensing head can be reduced along with the rise of the body temperature; the body temperature is reduced, the resistance value can rise, the temperature measuring chip 24 can accurately acquire resistance value change signals, and the body temperature information is fed back in real time through the connected multi-parameter monitor.

Referring to fig. 3 and 4, the temperature measuring assembly includes a temperature measuring cavity tube 25 and a wire 26 in addition to the mounting portion 21, the temperature probe 23 and the temperature measuring chip 24; the three-cavity connecting piece 17 is positioned at the middle part of the catheter, the bottom of the three-cavity connecting piece 17 is provided with a hollow temperature measuring cavity tube 25, and a channel leading to the temperature measuring through cavity 15 is formed in the three-cavity connecting piece 17, so that the temperature measuring cavity tube 25 is communicated with the temperature measuring through cavity 15; the temperature measuring cavity tube 25 adopts a hollow structure design, so that a temperature measuring signal line can extend from the position of the three-cavity connecting piece 17 to the deep part of the catheter, and the temperature measuring chip 24 is connected with a lead 26 to transmit body temperature information to the outer end of the catheter through the temperature measuring cavity tube 25; the temperature measuring assembly can collect body temperature information from the temperature probe 23, the body temperature information is processed through the temperature measuring chip 24, the body temperature information is transmitted to the outer end of the catheter through the temperature measuring cavity tube 25 and the lead 26, effective transmission of body temperature in the whole catheter channel is achieved, and meanwhile, the temperature measuring cavity tube 25 with a hollow structure also ensures good smoothness of a signal line.

Referring to fig. 4, in order to realize effective transmission of body temperature information, the temperature measuring assembly is further provided with a connection hose 27 and a connector lug 28 at the other end of the temperature measuring cavity tube 25; specifically, one end of the temperature measuring cavity tube 25, which is far away from the three-cavity connecting piece 17, is connected with a soft wiring hose 27, one end of the wiring hose 27 is provided with a connector lug 28, and a wire 26 starts from the temperature measuring chip 24, passes through the temperature measuring cavity 15 and the temperature measuring cavity tube 25, finally penetrates out of the wiring hose 27 and is connected with the connector lug 28; the connector lug 28 is provided with a connecting port 29, so that the lead 26 can be connected with the multi-parameter monitor through the connecting port 29, and the body temperature information is transmitted to the connecting port 29 through the lead 26 and then connected to the monitor system; the temperature signal can be acquired in real time by the temperature probe 23 through the organic connection of each component in the temperature measuring assembly and the connection of the connection port 29 and the monitor, and is transmitted through the full-length catheter after being processed and finally sent to the central monitoring system, so that the aim of monitoring the body temperature in real time is fulfilled, and the effective transmission of the body temperature information is ensured.

Referring to fig. 2 and 5, the fixing assembly includes a fixing airbag 31, a soft fixing airbag 31 is disposed on an outer surface of the fixing portion 12, and in order to achieve inflation and deflation of the fixing airbag 31, a first air delivery hole 32 is disposed on a top of the fixing portion 12, and the first air delivery hole 32 is communicated with the fixing airbag 31 through the air delivery cavity 16; in this way, the fixing part 12 can be attached to the wall surface of the human body only by controlling the inflation state in the fixing air bag 31 through the air transmission cavity 16, and when the fixing air bag 31 is inflated, the fixing part 12 is attached to the inner wall of the human body by the pressure generated by inflation, so that the whole catheter is stably kept; the inflation and the exhaust of the fixed air bag 31 are controlled through the air transmission cavity 16 and the first air transmission hole 32, so that the stable retention of the catheter in the human body is ensured, and important technical support is provided for body temperature measurement.

Referring to fig. 5 and 8, in order to more conveniently inflate and deflate the fixed airbag 31, an air-delivering cavity tube 33 and an inflation connector 34 are further provided in the fixed assembly, specifically, a soft air-delivering cavity tube 33 is provided at the top of the three-cavity connecting member 17, and a through hole is provided on the three-cavity connecting member 17, so that one end of the air-delivering cavity tube 33 can be communicated with the air-delivering cavity 16 through the through hole; this allows the gas in the gas delivery lumen 16 to be delivered through the gas delivery lumen 33, while the other end of the gas delivery lumen 33 is provided with an inflation connector 34; the air inflation and exhaust control of the fixed air bag 31 can be realized by only using external air pump and other devices to inflate or exhaust the air transmission cavity tube 33 through the inflation connector 34; compared with the direct inflation of the fixed air bag 31, the control operation by the air transmission cavity pipe 33 and the inflation connector 34 is more convenient and quick, and the reliability of the catheter fixing function is effectively ensured.

Referring to fig. 5, in order to ensure the safety and reliability of the inflation operation, the inflation connector 34 is provided with a second gas delivery hole 35 for delivering and receiving gas, and at the same time, the inflation connector 34 is also sleeved with a sealing sleeve 36; the sealing sleeve 36 covers and seals the second air delivery hole 35 in a sealing manner, so that leakage of air in the air inflation process can be effectively prevented; the sealing sleeve 36 not only ensures the input tightness of the gas in the gas transmission cavity pipe 33, but also enhances the operation safety in the use process of the guide sealing pipe; the sealing sleeve 36 prevents accidental contact with the high pressure gas in the second gas transfer port 35, for example during inflation or removal of the catheter, thereby avoiding personal injury due to improper operation, which further improves the reliability and safety of the product in use.

Referring to fig. 2, 6 and 7, in order to drain and discharge urine efficiently and smoothly, the drainage assembly includes two sets of urinary inlets 41, and the two sets of urinary inlets 41 are disposed on two sides of the insertion portion 11 respectively; the two groups of urine guiding inlets 41 are communicated with the urine guiding cavity 14 arranged in the insertion part 11, and urine can smoothly flow into the urine guiding cavity 14 through the urine guiding inlets 41 no matter what posture the patient is in; the urine is guided to the outside of the catheter by the catheter cavity 14, so that the urination function is realized, and the two groups of symmetrically arranged catheter inlets 41 can better take care of the physiological needs of each patient, so that the catheterization efficiency is effectively improved.

Referring to fig. 6 and 7, the drainage assembly further includes a catheter 42, and one end of the three-cavity connector 17 is specifically provided with the catheter 42; the interior of the urinary catheter cavity 42 is communicated with the urinary catheter cavity 14, so that urine introduced through the urinary catheter inlet 41 can smoothly enter the urinary catheter cavity 42 through the urinary catheter cavity 14; meanwhile, in order to realize the connection of the catheter 42 and the subsequent components, the connecting clamping groove 43 is arranged on the inner wall of the catheter 42, so that after urine is led out of the catheter cavity 14, the gap-free connection can be realized through the connecting clamping groove 43, the subsequent drainage system can be smoothly guided, the urine starts from the catheter inlet 41 until the urine is completely drained at last, the flow is smooth and efficient, and the drainage efficiency of the product in actual use is greatly improved.

Referring to fig. 2, when the catheter is used, the medical staff firstly slowly inserts the insertion part 11 into the patient, and as the insertion part 11 is made of transparent silica gel, the insertion part has good flexibility and durability, and can reduce the resistance during intubation, so that the insertion process is smoother; meanwhile, the arrangement of the insertion end head 18 further improves the smoothness of insertion and reduces discomfort of a patient; after insertion, the fixing part 12 remains stably outside the patient, and the hose 13 is connected with other devices; the use of transparent silica gel material has still increased the visibility of product, and medical personnel can observe the flow condition of urine more directly perceivedly, in time discovers unusually, and in addition, this kind of material has still improved the sanitation and the security of product, has reduced the risk of infection.

Specific use and action of the embodiment: when in use, a doctor firstly inserts the insertion part 11 into the urethra, then the air is delivered to the fixed air bag 31 through the inflation connector 34 on the air delivery cavity pipe 33, so that the fixed air bag 31 is inflated and fixed at the urethral orifice, and the stable positioning of the catheter is realized; at this time, the temperature probe 23 in the temperature measuring assembly is in direct contact with urine in the catheter cavity 14, so that the urine is subjected to temperature detection, the problem that the PVC sleeve is wrapped on the traditional catheter temperature measuring chip to influence the temperature measuring sensitivity is solved, higher temperature measuring precision is realized, and the temperature measuring precision is transmitted to the monitoring equipment for display through the lead 26 and the connector lug 28; when the patient urinates, urine can be discharged smoothly through the urine guide inlet 41 and the urine guide cavity 14, and the urine guide pipe body is made of transparent silica gel, so that medical staff can directly observe the urine flow condition, and the urination condition of the patient can be monitored efficiently and safely.

The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.

Claims (10)

1. A three-cavity temperature measurement catheter, which is characterized in that: the catheter comprises a three-cavity connecting piece (17) and a catheter body, wherein the catheter body comprises an insertion part (11), a fixing part (12) and a hose (13), one end of the insertion part (11) is provided with a temperature measuring component, and the fixing component is arranged on the fixing part (12); the insertion part (11), the hose (13) and the fixing part (12) are respectively provided with a urethral catheterization cavity (14), a temperature measurement cavity (15) and a gas transmission cavity (16) which are connected; the catheter is characterized in that one end, far away from the fixing part (12), of the hose (13) is provided with a three-cavity connecting piece (17), one end of the catheter cavity (14), one end of the temperature measuring cavity (15) and one end of the gas transmission cavity (16) are connected with the three-cavity connecting piece (17), and a drainage component is further arranged on the catheter body.

2. A three-chamber temperature measuring catheter according to claim 1, wherein: the temperature measuring assembly comprises an installation part (21), one end of the insertion part (11) is provided with the installation part (21), the installation part (21) is provided with an installation hole (22), a temperature probe (23) is arranged in the installation hole (22) in a penetrating way, a temperature measuring chip (24) is arranged in the installation part (21), and one side of the temperature measuring chip (24) is connected with the temperature probe (23); the temperature measuring range of the temperature probe (23) is 25-45 ℃, and the diameter is 0.6 mm.

3. A three-chamber temperature measuring catheter according to claim 2, wherein: the temperature measuring assembly is characterized by further comprising a temperature measuring cavity tube (25), the bottom of the three-cavity connecting piece (17) is provided with the temperature measuring cavity tube (25), the temperature measuring cavity tube (25) is of a hollow tube structure, a through cavity is formed in the three-cavity connecting piece (17) to enable the temperature measuring cavity tube (25) to be communicated with the temperature measuring through cavity (15), and one side of the temperature measuring chip (24) is connected with a conducting wire (26).

4. A three-chamber temperature measuring catheter according to claim 3, wherein: one end of the temperature measuring cavity tube (25) far away from the three-cavity connecting piece (17) is connected with a wiring hose (27), one end of the wiring hose (27) is provided with a connector lug (28), a wire (26) penetrates through the temperature measuring cavity tube (15) and is connected with the temperature measuring cavity tube (25) and the wiring hose (27) and the connector lug (28), and a connecting port (29) is arranged on the connector lug (28).

5. A three-chamber temperature measuring catheter according to claim 1, wherein: the fixing assembly comprises a fixing air bag (31), the outer surface of the fixing portion (12) is provided with the fixing air bag (31), a first air conveying hole (32) is formed in the top of the fixing portion (12), and the air conveying through cavity (16) is communicated with the fixing air bag (31) through the first air conveying hole (32).

6. A three-lumen temperature-measuring catheter as set forth in claim 5, wherein: the fixing assembly further comprises an air conveying cavity pipe (33), the top of the three-cavity connecting piece (17) is provided with the air conveying cavity pipe (33), the three-cavity connecting piece (17) is provided with a through hole, one end of the air conveying cavity pipe (33) is communicated with the air conveying through cavity (16) through the through hole, and the other end of the air conveying cavity pipe (33) is provided with an inflation connector (34).

7. A three-chamber temperature measuring catheter according to claim 6, wherein: the inflating joint (34) is provided with a second air conveying hole (35), the inflating joint (34) is further sleeved with a sealing sleeve (36), and the sealing sleeve (36) seals the second air conveying hole (35).

8. A three-chamber temperature measuring catheter according to claim 1, wherein: the drainage assembly comprises two groups of catheterization inlets (41), the catheterization inlets (41) are respectively arranged on two sides of the insertion portion (11), and the two groups of catheterization inlets (41) are communicated with the catheterization cavity (14).

9. A three-chamber temperature measuring catheter according to claim 8, wherein: the drainage assembly further comprises a urinary catheter cavity (42), one end of the three-cavity connecting piece (17) is provided with the urinary catheter cavity (42), the urinary catheter cavity (42) is communicated with the urinary catheter cavity (14), and the inner wall of the urinary catheter cavity (42) is provided with a connecting clamping groove (43).

10. A three-chamber temperature measuring catheter according to claim 1, wherein: the inserting part (11), the fixing part (12) and the hose (13) are made of transparent silica gel, and an inserting end (18) is arranged at one end of the inserting part (11) far away from the fixing part (12).