Medical catheter, drainage tube and catheter

Abstract

The utility model relates to a medical catheter, a drainage tube and a catheter. The medical catheter comprises a catheter body, a temperature measuring assembly and a pressure measuring piece. The tube body is provided with a drainage cavity and a measuring cavity which are independent of each other, the drainage cavity and the measuring cavity both penetrate through the near end and the far end of the tube body, and the drainage cavity is used for perfusing or extracting liquid medicine from a target cavity. The temperature measuring assembly comprises a temperature measuring probe, the temperature measuring probe is arranged at the far end of the measuring cavity, and the temperature measuring probe is used for acquiring the temperature of the liquid medicine in the target cavity. The pressure measuring piece is connected to the near end of the measuring cavity in a sealed mode and used for obtaining the pressure in the measuring cavity. According to the medical catheter, the drainage tube and the catheter, the accuracy and the safety of liquid medicine perfusion can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a medical catheter, a drainage tube and a urinary catheter. BACKGROUND

[0002] The medical catheter such as the drainage tube or the urinary catheter is often used for perfusing a patient with a liquid medicine to treat the patient's affected part in clinical use. In order to ensure the treatment effect, medical staff need to pay attention to the temperature of the liquid medicine and the injection amount of the liquid medicine at all times during the perfusion of the liquid medicine.

[0003] However, in the related art, the temperature of the liquid medicine cannot be accurately obtained when the liquid medicine enters the affected part of the patient's body, and only the temperature before the perfusion of the liquid medicine can be obtained. As for the injection amount of the liquid medicine, the capacity of the perfused liquid medicine that each patient can withstand is different, and generally only the doctor can judge by experience or inquire the subjective feeling of the patient, lacking objective index support, resulting in an unsatisfactory treatment effect. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a medical catheter, a drainage tube and a urinary catheter to solve the problem of how to improve the accuracy and safety of the perfused liquid medicine.

[0005] In a first aspect, the present application provides a medical catheter, comprising:

[0006] a tube body, the tube body is provided with a drainage cavity and a measurement cavity which are independent of each other, the drainage cavity and the measurement cavity both penetrate the proximal end and the distal end of the tube body, and the drainage cavity is used for perfusing or leading out a liquid medicine for a target cavity;

[0007] a temperature measurement assembly, the temperature measurement assembly comprises a temperature measurement probe, the temperature measurement probe is arranged at the distal end of the measurement cavity, and the temperature measurement probe is used for obtaining the temperature of the liquid medicine in the target cavity;

[0008] a pressure measurement piece, the pressure measurement piece is sealingly connected to the proximal end of the measurement cavity, and the pressure measurement piece is used for obtaining the pressure in the measurement cavity.

[0009] The technical solutions are further described as follows:

[0010] In one of the embodiments, the temperature measurement assembly further comprises:

[0011] a temperature measurement connector, the temperature measurement connector is sealingly connected to the proximal end of the measurement cavity, and the temperature measurement connector is used for being electrically connected to a perfusion device;

[0012] a temperature measurement cable, the temperature measurement cable is arranged in the measurement cavity, one end of the temperature measurement cable is electrically connected to the temperature measurement probe, and the other end of the temperature measurement cable is electrically connected to the temperature measurement connector.

[0013] In one of the embodiments, the pressure sensor comprises a pressure connector, which is sealingly connected to the proximal end of the measuring cavity, and the temperature sensor is used to electrically connect to the perfusion device.

[0014] In one of the embodiments, the medical catheter further comprises a three-way connector, which has a connecting port, a temperature port and a pressure port in communication with each other, the connecting port is in communication with the proximal end of the measuring cavity, the temperature connector is sealingly connected to the temperature port, and the pressure connector is sealingly connected to the pressure port.

[0015] In one of the embodiments, the inner diameter of the measuring cavity is smaller than the inner diameter of the drainage cavity.

[0016] In the second aspect, the application further provides a drainage tube comprising the medical catheter.

[0017] In the third aspect, the application further provides a urinary catheter comprising the medical catheter.

[0018] In one of the embodiments, the urinary catheter further comprises a balloon, which is sleeved on the distal end of the tube body, and the tube body is further provided with a balloon cavity for injecting liquid into the balloon.

[0019] In one of the embodiments, the tube body is further provided with a reflux cavity, which penetrates through the proximal end and the distal end of the tube body.

[0020] In one of the embodiments, the proximal end of the tube body is further provided with a blocking head, which is used to block the proximal end of the drainage cavity.

[0021] In the medical catheter, the drainage tube and the urinary catheter, the tube body is provided with a drainage cavity and a measuring cavity which are independent of each other, and the drainage cavity and the measuring cavity both penetrate the proximal end and the distal end of the tube body. In clinical use, by inserting the distal end of the tube body into a target cavity such as an abdominal cavity, a thoracic cavity or a bladder, the drainage cavity can be used to infuse a liquid medicine into the target cavity to treat or clean the target cavity. At the same time, by arranging a temperature measuring probe at the distal end of the measuring cavity, since the distal end of the tube body is inserted into the target cavity during infusion, the temperature measuring probe can obtain the temperature of the liquid medicine in the target cavity in real time, so that medical staff can accurately grasp the temperature of the liquid medicine after it enters the target cavity, thereby ensuring the treatment effect. In addition, during infusion, the measuring cavity is in communication with the target cavity, so the pressure in the target cavity is the same as the pressure in the measuring cavity. At this time, by sealingly connecting a pressure measuring piece to the distal end of the measuring cavity, the pressure in the measuring cavity can be obtained by using the pressure measuring piece to obtain the pressure of the target cavity. Since the more liquid medicine is infused into the target cavity, the greater the pressure of the target cavity, and the less liquid medicine is infused into the target cavity, the smaller the pressure of the target cavity. Therefore, by monitoring the pressure of the target cavity, medical staff can accurately control the amount of infused liquid medicine, without relying on the experience of doctors to judge or consulting the subjective feelings of patients, thereby improving the accuracy and safety of the infusion of liquid medicine and improving the treatment effect. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application and serve to explain the principles of the present application and its implementations, and are not intended to constitute an inappropriate limitation of the present application.

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the accompanying drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and other accompanying drawings can be obtained by those skilled in the art without any creative effort.

[0024] In addition, the drawings are not drawn to scale 1:1, and the relative sizes of the various elements are only exemplarily drawn in the drawings, but not necessarily drawn according to the true scale. In the drawings:

[0025] Figure 1 Structure schematic view of a drainage tube of an embodiment.

[0026] Figure 2 Structure schematic view of a urinary catheter of an embodiment.

[0027] Explanation of reference signs:

[0028] 10, tube body; 11, drainage cavity; 12, measuring cavity; 13, backflow cavity; 14, balloon cavity; 21, temperature measuring probe; 22, temperature measuring cable; 23, temperature measuring connector; 30, pressure measuring connector; 40, tee joint; 41, connecting port; 42, temperature measuring port; 43, pressure measuring port; 50, sealing head. DETAILED DESCRIPTION

[0029] In order to make the above objectives, features and advantages of the present application more apparent, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different manners according to other embodiments, and those skilled in the art can make similar improvements without departing from the spirit of the present application, and therefore the present application is not limited to the specific embodiments disclosed below.

[0030] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0031] In addition, if the terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features referred to. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0032] In the present application, unless otherwise specifically defined and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] In the present application, unless specifically defined and limited otherwise, if there is a description of a first feature "on" or "under" a second feature, etc., it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "over", "above" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0034] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be an intermediate element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are for illustrative purposes only and do not represent the only implementation.

[0035] First of all, it should be noted that in the following "proximal end" refers to the end of the medical catheter closer to the operator during clinical use, and "distal end" refers to the end of the medical catheter farther away from the operator during clinical use.

[0036] An embodiment of the present application provides a medical catheter, which can be a drainage tube, a urinary catheter or the like, without limitation. Specifically, referring to Figure 1 The medical catheter of an embodiment includes a tube body 10, a temperature measurement assembly and a pressure measurement component. The tube body 10 is provided with a drainage cavity 11 and a measurement cavity 12 which are independent of each other, and both the drainage cavity 11 and the measurement cavity 12 extend through the proximal end and the distal end of the tube body 10. The drainage cavity 11 is used for perfusion or drainage of a target cavity with a liquid medicine. The temperature measurement assembly includes a temperature measurement probe 21, which is arranged at the distal end of the measurement cavity 12. The temperature measurement probe 21 is used to obtain the temperature of the liquid medicine in the target cavity. The pressure measurement component is sealingly connected to the proximal end of the measurement cavity 12, and is used to obtain the pressure in the measurement cavity 12. The target cavity includes, but is not limited to, a natural cavity in the human body such as the abdominal cavity, the thoracic cavity or the bladder. The liquid medicine includes, but is not limited to, a therapeutic drug, physiological saline and the like.

[0037] The aforementioned medical catheter features independent drainage cavities 11 and measuring cavities 12 within its tube body 10, both extending through the proximal and distal ends of the tube body 10. In clinical use, the distal end of the tube body 10 is inserted into a target cavity such as the abdominal cavity, thoracic cavity, or bladder. The drainage cavity 11 allows for the infusion or drainage of medication into or out of the target cavity for treatment or cleansing. A temperature probe 21 is positioned at the distal end of the measuring cavity 12. During infusion or drainage, the distal end of the tube body 10 is inserted into the target cavity, allowing the temperature probe 21 to obtain real-time information about the temperature of the medication within the target cavity. This enables medical personnel to accurately control the temperature of the medication upon entry into the target cavity, thereby ensuring the effectiveness of the treatment. Furthermore, during the infusion process, the measuring chamber 12 is connected to the target chamber, so the pressure inside the target chamber is the same as the pressure in the measuring chamber 12. At this time, by sealing and connecting a pressure measuring device at the distal end of the measuring chamber 12, the pressure inside the measuring chamber 12 can be obtained to obtain the pressure of the target chamber. Since the more medication is infused into the target chamber, the greater the pressure of the target chamber, and the less medication is infused into the target chamber, the lower the pressure of the target chamber, by monitoring the pressure of the target chamber, medical staff can accurately control the amount of medication infused without relying on the doctor's experience or consulting the patient's subjective feelings, thus improving the accuracy and safety of the medication infusion and improving the treatment effect.

[0038] See also Figure 1 In one embodiment, the temperature measuring assembly further includes a temperature measuring connector 23 and a temperature measuring cable 22. The temperature measuring connector 23 is sealed and connected to the proximal end of the measuring chamber 12 and is used for electrical connection to the infusion device (not shown). The temperature measuring cable 22 passes through the measuring chamber 12, with one end of the cable electrically connected to the temperature measuring probe 21 and the other end electrically connected to the temperature measuring connector 23. Thus, after the temperature measuring probe 21 obtains the temperature of the liquid medicine in the target chamber, it can transmit the liquid medicine temperature as an electrical signal through the temperature measuring cable 22 to the temperature measuring connector 23, and then the temperature measuring connector 23 transmits it to the infusion device for display or data processing.

[0039] It is worth noting that in other embodiments, the temperature probe 21 can also transmit the obtained liquid temperature to the infusion device in the form of a wireless signal via wireless communication methods such as WiFi or Bluetooth, in which case the temperature measuring cable 22 and the temperature measuring connector 23 can be omitted.

[0040] See Figure 1In one embodiment, the pressure measuring element includes a pressure measuring connector 30, which is sealed to the proximal end of the measuring chamber 12. A temperature measuring connector 23 is used for electrical connection to the infusion device. Exemplarily, the pressure measuring connector 30 may include a pressure sensor, etc. Thus, by using the pressure measuring connector 30 to obtain the pressure within the measuring chamber 12 to indirectly obtain the pressure of the target chamber, the obtained pressure data can be transmitted to the infusion device in the form of an electrical signal for display or data processing.

[0041] See Figure 1 The medical catheter also includes a three-way connector 40, which has interconnected connection port 41, temperature measuring port 42, and pressure measuring port 43. Connection port 41 is connected to the proximal end of the measuring chamber 12. Temperature measuring connector 23 is sealed to temperature measuring port 42, and pressure measuring connector 30 is sealed to pressure measuring port 43. This ensures that temperature measuring connector 23 and pressure measuring connector 30 do not interfere with each other. At the same time, the sealed connection of temperature measuring connector 23 to temperature measuring port 42 and pressure measuring connector 30 to pressure measuring port 43 ensures the airtightness of the measuring chamber 12, thereby ensuring that the pressure in the measuring chamber 12 is consistent with the pressure in the target chamber.

[0042] Optionally, in one embodiment, the inner diameter of the measuring cavity 12 is smaller than the inner diameter of the drainage cavity 11. In this way, with a fixed outer diameter of the tube body 10, making the inner diameter of the drainage cavity 11 larger ensures that the flow rate of irrigation or drainage is large enough, thereby improving irrigation efficiency.

[0043] Optionally, see Figure 1 In one embodiment, this application also provides a drainage tube for perfusion or drainage of natural cavities of the human body, such as the abdominal cavity or thoracic cavity. Specifically, the drainage tube of one embodiment includes the medical catheter of any of the above embodiments.

[0044] Specifically, in clinical use, multiple drainage tubes can be used in combination. Some of the drainage tubes have their drainage lumens 11 used for infusing medication into the target cavity, while the remaining drainage lumens 11 are used for draining medication from the target cavity. This improves infusion efficiency. For example, when perfusing the abdominal cavity, four drainage tubes can be used: two drainage tubes have their drainage lumens 11 used for infusing medication into the abdominal cavity, and the remaining two drainage lumens 11 are used for draining medication from the abdominal cavity. Similarly, when perfusing the pleural cavity, two drainage tubes can be used: one drainage tube has its drainage lumen 11 used for infusing medication into the pleural cavity, and the remaining drainage lumens 11 are used for draining medication from the pleural cavity.

[0045] Specifically, taking peritoneal perfusion as an example, currently, with traditional drainage tubes used for peritoneal perfusion or drainage, the temperature of the medication within the peritoneal cavity cannot be directly observed; only the temperature of the medication before entering the cavity can be observed. Furthermore, the volume of medication that each patient can tolerate varies, and the amount of medication perfused can only be determined by visually observing the abdominal bulge and inquiring about the patient's subjective feelings, lacking objective indicators. Theoretically, the more medication perfused into the peritoneal cavity, the greater the intra-abdominal pressure. However, excessive intra-abdominal pressure can affect postoperative coagulation function, increasing the incidence of postoperative thrombosis and raising the risk of postoperative complications. Insufficient intra-abdominal pressure leads to inadequate perfusion, resulting in poor treatment outcomes for abdominal tumors and an increased probability of postoperative tumor metastasis.

[0046] The drainage tube of this application, configured with a medical catheter as described in any of the above embodiments, allows doctors to directly observe the temperature of the medication solution within the abdominal cavity, facilitating precise control of the treatment temperature and maximizing the thermotherapy effect on the patient. Simultaneously, the intra-abdominal pressure can be obtained through the medical catheter, enabling accurate assessment of the amount of medication infused into the abdominal cavity. This allows doctors to accurately determine the appropriate infusion volume for each patient, shifting from estimating the infusion volume based on clinical experience to performing clinical operations according to objective and realistic indicators. This facilitates precise thermotherapy perfusion treatment, maximizing the perfusion effect and increasing the safety of thermotherapy perfusion.

[0047] See Figure 2 Another embodiment of this application provides a urinary catheter for bladder irrigation. Specifically, one embodiment of the urinary catheter includes the medical catheter of any of the above embodiments. The drainage lumen 11 of the urinary catheter is used for instilling medication into the bladder.

[0048] Specifically, currently, traditional urinary catheters can only perform catheterization and bladder irrigation. During irrigation, the medication enters and exits the bladder through the catheter. The temperature of the medication within the bladder cannot be directly observed; only the temperature before entering the bladder can be observed. Furthermore, the capacity of the bladder to receive irrigation medication varies from patient to patient, and the amount of medication to be instilled generally requires the doctor to inquire about the patient's subjective feelings. The pressure within the bladder when the patient experiences urinary urgency cannot be determined. Theoretically, the more medication instilled into the bladder in a short period, the greater the bladder pressure. Four possible scenarios during irrigation are as follows: a. A large amount of medication in the bladder will create significant pressure, stimulating the patient and causing a need to urinate. b. Excessive bladder pressure may cause the medication to reflux into the kidneys, causing secondary damage. c. When there is inflammation in the bladder, the patient is more sensitive to the amount of medication entering the bladder; even a small amount can cause urinary urgency. Frequent urinary urgency is detrimental to the treatment of hyperthermic irrigation. d. When patients are subjectively asked if they have an urge to urinate, they will have the urge to urinate, even if their bladder can tolerate the current amount of medication instilled. Therefore, an objective indicator is needed to support the doctor in judging the amount of medication instilled.

[0049] The urinary catheter of this application, configured with any of the medical catheters described above, allows doctors to directly observe the temperature of the medication solution within the bladder, facilitating precise temperature control and maximizing the therapeutic effect on the patient. Simultaneously, the pressure within the bladder can be measured via the medical catheter, allowing for accurate assessment of the volume of fluid (medication and urine) within the bladder. This enables doctors to accurately evaluate the impact of the instilled medication volume on the bladder, eliminating the need to actively inquire about the patient's subjective feelings unless absolutely necessary, ensuring the bladder is fully filled and maximizing the therapeutic effect of the hyperthermic perfusion. Furthermore, by monitoring the pressure within the patient's bladder, if the pressure becomes excessive, the perfusion can be proactively stopped and a backflow procedure performed, preventing damage caused by excessive bladder pressure and ensuring the safety of the hyperthermic perfusion.

[0050] See Figure 2 In one embodiment, the catheter further includes a balloon (not shown), which is fitted over the distal end of the tube body 10. The tube body 10 also has a balloon cavity 14 for inflating the balloon. Thus, after the distal end of the catheter is inserted into the bladder, physiological saline can be inflated into the balloon through the balloon cavity 14, causing the balloon to inflate. The inflated balloon can then secure the catheter in the bladder, preventing the catheter from falling out during irrigation.

[0051] See Figure 2 In one embodiment, the tube 10 is further provided with a reflux cavity 13, which extends through the proximal and distal ends of the tube 10. Specifically, the proximal end of the reflux cavity 13 is used to connect to a urine bag, and the reflux cavity 13 is used to guide urine and medication from the bladder into the urine bag.

[0052] In one embodiment, the proximal end of the tube body 10 is further provided with a sealing head 50, which is used to seal the proximal end of the drainage cavity 11. Specifically, when it is necessary to drain urine or medication from the bladder through the reflux cavity 13, the sealing head 50 can be used to seal the proximal end of the drainage cavity 11 to prevent urine or medication from flowing out of the drainage cavity 11.

[0053] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A medical catheter, characterized by The medical catheter comprises: a tube body, which is provided with a drainage cavity and a measuring cavity which are independent of each other and pass through a proximal end and a distal end of the tube body, the drainage cavity being used for perfusion or drainage of a target cavity; a temperature measuring assembly, which comprises a temperature measuring probe arranged at the distal end of the measuring cavity and used for acquiring the temperature of the liquid in the target cavity; and a pressure measuring element, which is sealingly connected to the proximal end of the measuring cavity and used for acquiring the pressure in the measuring cavity. The temperature measuring assembly further comprises:

2. The medical catheter according to claim 1, characterized in that a temperature measuring connector, which is sealingly connected to the proximal end of the measuring cavity and used for electrical connection to a perfusion device; a temperature measuring cable, which is arranged in the measuring cavity, one end of the temperature measuring cable being electrically connected to the temperature measuring probe, and the other end of the temperature measuring cable being electrically connected to the temperature measuring connector. The pressure measuring element comprises a pressure measuring connector, which is sealingly connected to the proximal end of the measuring cavity and used for electrical connection to a perfusion device.

3. The medical catheter according to claim 2, wherein, The medical catheter further comprises a three-way connector, which specifically comprises a connecting port, a temperature measuring port and a pressure measuring port which are in communication with each other, the connecting port being in communication with the proximal end of the measuring cavity, the temperature measuring connector being sealingly connected to the temperature measuring port, and the pressure measuring connector being sealingly connected to the pressure measuring port.

4. The medical catheter according to claim 3, wherein, The inner diameter of the measuring cavity is smaller than the inner diameter of the drainage cavity.

5. The medical catheter according to any one of claims 1-4, characterized in that, The medical catheter comprises any one of claims 1-5.

6. A drainage tube, characterized in that, The medical catheter comprises any one of claims 1-5.

7. A urinary catheter, characterized in that The urinary catheter further comprises a balloon, which is sleeved on the distal end of the tube body, and the tube body is further provided with a balloon cavity used for injecting liquid into the balloon.

8. The urinary catheter of claim 7, wherein, The tube body is further provided with a reflux cavity which passes through the proximal end and the distal end of the tube body.

9. The urinary catheter of claim 7, wherein, The proximal end of the tube body is further provided with a plug, which is used for plugging the proximal end of the drainage cavity.

10. The urinary catheter of claim 7, wherein, ​

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