Urethral catheter with color developing bag body

Abstract

The invention belongs to the field of urethral catheter instruments, and particularly relates to a urethral catheter with a color developing bag body, which comprises a urethral catheter body and a balloon arranged on the outer wall of the urethral catheter body, the urethral catheter body is provided with a liquid injection pipeline, the liquid injection pipeline is provided with a liquid inlet end and a liquid outlet end, and the liquid injection pipeline is communicated with the balloon; the liquid filling assembly comprises a connector piece, the connector piece is connected with the liquid inlet end, the connector piece is provided with a containing cavity, and the containing cavity is communicated with the liquid injection pipeline; the pore plate is arranged in the accommodating chamber; the forcible entry part is arranged in the containing cavity, and the forcible entry part and the pore plate can move relatively, so that the forcible entry part is close to the pore plate or the pore plate is close to the forcible entry part; and the color developing liquid bag is filled with color developing liquid, the color developing liquid bag is arranged between the pore plate and the forcible entry part, and when the forcible entry part and the pore plate move relatively, the forcible entry part or the pore plate applies force to the color developing liquid bag, so that the color developing liquid bag is broken in the containing cavity, and the color developing liquid in the color developing liquid bag is converged into the containing cavity.

Description

Technical Field

[0001] The present invention belongs to the field of catheter devices, and particularly relates to a catheter with a color - showing bladder. Background Art

[0002] A catheter is a medical device for assisting urination. Generally, it is inserted into the bladder through the urethra to drain urine. In the structure of the catheter, a balloon is provided at one end of the catheter inserted into the bladder, and a balloon valve is provided at the external end of the patient. Through this balloon valve, normal saline can be injected into the balloon to fill the balloon for the purpose of fixing the catheter, so that it can stay in the bladder to prevent it from slipping out.

[0003] However, the use of catheters is not without risks. For example, one of the most common risks in current clinical practice is unplanned extubation, that is, the catheter falls off due to the patient's behavior or external factors. There are various reasons for this problem. For example, the liquid in the balloon slowly leaks, causing the volume of the balloon to become smaller and lose the fixing effect; or, due to the increase in intra - abdominal pressure of the patient, the body fluid in the patient's bladder presses on the surface of the balloon, resulting in an increase in the surface pressure of the balloon, and then the balloon ruptures and loses the fixing effect. Although the catheter can still drain the patient's urine within a certain period of time, due to the loss of the fixation of the balloon by the catheter, eventually the end of the catheter inserted into the human body will slip into the patient's urethra. And because the balloon valve of the traditional catheter is generally a one - way valve and the filled liquid is a transparent liquid (normal saline), when the catheter is extubated and the patient has abdominal distension and difficulty urinating, medical staff cannot observe and know the filling situation of the balloon outside the patient's body, so it is not convenient for medical staff to give corresponding treatment.

[0004] The present invention aims at the above problems and provides a catheter with a color - showing bladder. Summary of the Invention

[0005] In order to overcome the problems raised in the background art, the present invention provides a catheter with a color - showing bladder, which can facilitate medical staff to judge the reason for catheter extubation outside the patient's body when the catheter is extubated, that is, whether the extubation is caused by balloon rupture or balloon liquid leakage, and then facilitate medical staff to carry out corresponding treatment. Specifically, the following technical solutions are adopted, which include: a catheter body, a balloon disposed on the outer wall of the catheter body. Among them, the catheter body has a liquid injection pipeline, and the liquid injection pipeline has an inlet end and an outlet end opposite to each other. The liquid injection pipeline is connected to the balloon through the outlet end;

[0006] A liquid filling assembly, including a connector. The connector is connected to the inlet end. Among them, the connector has a receiving chamber, and the receiving chamber is connected to the liquid injection pipeline; and

[0007] An orifice plate, disposed within the accommodation chamber; and

[0008] A breaking member, disposed within the accommodation chamber, wherein one of the breaking member and the orifice plate is movable relative to the other such that the breaking member approaches the orifice plate or the orifice plate approaches the breaking member; and

[0009] A color-developing liquid sac, which contains a color-developing liquid, wherein the color-developing liquid sac is disposed between the orifice plate and the breaking member, and when the breaking member and the orifice plate move relative to each other, the breaking member or the orifice plate applies a force to the color-developing liquid sac, causing the color-developing liquid sac to rupture within the accommodation chamber so that the color-developing liquid in the color-developing liquid sac flows into the accommodation chamber.

[0010] In some embodiments of the present application, the accommodation chamber has: a first channel communicating with the liquid injection channel and a second channel communicating with the outside;

[0011] The orifice plate is fixedly disposed within the accommodation chamber;

[0012] The breaking member is slidably disposed within the accommodation chamber, wherein the breaking member is located between the orifice plate and the second channel. When the breaking member is pushed to move in the direction of the first channel, the breaking member applies a pressure to the color-developing liquid sac, and the orifice plate reacts against the outer surface of the color-developing liquid sac to cause the color-developing liquid sac to rupture within the accommodation chamber.

[0013] Further, the breaking member includes: a limiting section and a limiting plate, the limiting plate is disposed at one end of the limiting section, and a liquid passing hole is formed through the limiting section from the end away from the limiting plate towards the limiting plate;

[0014] Wherein, a limiting cavity is formed from the second channel in a direction away from the first channel, and at least a part of the limiting section is always located within the limiting cavity.

[0015] Further, the distance between the orifice plate and the second channel is less than the length of the limiting section;

[0016] The outer diameter of the limiting section is the same as the inner diameter of the limiting cavity;

[0017] The inner diameter of the liquid passing hole is less than the inner diameter of the limiting cavity.

[0018] In some embodiments of the present application, the accommodation chamber includes: a first channel and a second channel, the first channel communicates with the liquid injection channel;

[0019] The breaking member is fixedly disposed within the accommodation chamber;

[0020] The orifice plate is slidably disposed within the accommodation chamber, wherein the orifice plate is located between the breaking member and the second channel; wherein, when the orifice plate is pushed to move towards the first channel, the orifice plate pushes the color-developing liquid sac towards the breaking member, so that the orifice plate and the breaking member simultaneously apply forces to the outer surface of the color-developing liquid sac, so as to cause the color-developing liquid sac to rupture within the accommodation chamber.

[0021] Furthermore, the cross-section of the accommodation chamber in the direction perpendicular to its depth extension direction is circular. Correspondingly, the outer contour shape of the orifice plate is also circular, and the outer diameter of the orifice plate is the same as the inner diameter of the accommodation chamber.

[0022] In some embodiments of the present application, a spring is further included. The spring is disposed within the accommodation chamber, wherein one end of the spring abuts against the orifice plate, and the other end of the spring abuts against the breaking member, so that the orifice plate and the breaking member always remain at a distance from each other.

[0023] In some embodiments of the present application, a plurality of puncturing needles are disposed on the surface of the breaking member facing the orifice plate.

[0024] In some embodiments of the present application, a plurality of puncturing needles are disposed on the surface of the orifice plate facing the breaking member.

[0025] In some embodiments of the present application, a one-way valve is further included. The one-way valve is disposed within the first channel, wherein the one-way valve is configured to allow liquid to flow from within the accommodation chamber into the injection pipeline.

[0026] Advantages of the present invention: 1. By providing a liquid filling assembly, during use, a syringe containing physiological saline is connected to the connector. During the connection process, the nipple of the syringe applies a force to one of the orifice plate or the breaking member, so that the breaking member moves closer to the orifice plate or the orifice plate moves closer to the breaking member, thereby squeezing the color-developing liquid sac located between the orifice plate and the breaking member, causing the rupture of the color-developing liquid sac, so that the color-developing liquid in the color-developing liquid sac flows into the accommodation chamber. Then, by injecting the physiological saline in the syringe, the color-developing liquid is mixed with the physiological saline and injected into the balloon. When the balloon ruptures, the physiological saline containing the color-developing liquid flows through the urine catheter body into the urine collection bag connected to the urine catheter body. Thus, when the patient has a tube disconnection situation, it is convenient for medical staff to quickly determine whether the balloon on the urine catheter body has ruptured, and further convenient for medical staff to find the cause of the tube disconnection problem.

[0027] 2. By setting up an orifice plate, a breaking component, and a color - showing liquid sac, during use, after connecting a syringe containing normal saline to the connector, the nipple of the syringe applies force to either the orifice plate or the breaking component, causing the breaking component to move closer to the orifice plate or the orifice plate to move closer to the breaking component, thus completing the breaking of the color - showing liquid sac and allowing the color - showing liquid to flow into the accommodating chamber. In this way, while medical staff inject normal saline into the balloon, the color - showing liquid can be mixed with the normal saline, eliminating the need for medical staff to separately prepare the color - showing liquid and normal saline, thereby increasing the speed of injecting normal saline mixed with the color - showing liquid into the balloon and saving the operation steps before inserting the device into the patient's body.

[0028] 3. By arranging a puncturing needle on the side of the breaking component facing the orifice plate or on the end face of the orifice plate facing the breaking component, during use, when the orifice plate or the breaking component moves under the push of the syringe nipple, the puncturing needle can pierce into the color - showing sac body, thus quickly breaking the color - showing sac body and enabling the color - showing liquid in the color - showing sac body to rapidly flow into the accommodating chamber, thereby improving the breaking efficiency of the color - showing sac body and further increasing the speed of injecting normal saline mixed with the color - showing liquid into the balloon. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram showing the overall structure of the urinary catheter body;

[0030] Figure 2 Schematic diagram showing the structure of the balloon after inflation;

[0031] Figure 3 Schematic diagram showing the internal structure of the urinary catheter body;

[0032] Figure 4 Schematic diagram showing the structure of the liquid outlet position of the liquid injection pipeline;

[0033] Figure 5 Schematic diagram showing the overall structure of the liquid - filling assembly;

[0034] Figure 6 Schematic diagram showing the structure of the accommodating chamber of the connector;

[0035] Figure 7 Schematic diagram showing the structure during the combination of the syringe and the liquid - filling assembly;

[0036] Figure 8 Schematic diagram showing the process of the breaking component and the orifice plate breaking the color - showing liquid sac;

[0037] Figure 9 Schematic diagram showing the structure of the puncturing needle arranged on the limiting plate of the breaking component;

[0038] Figure 10Schematic diagram for explaining the structure of the puncturing needle provided on the orifice plate;

[0039] Figure 11 Schematic diagram for explaining another implementation structure of the liquid filling assembly

[0040] Figure 12 Schematic diagram for explaining the structure of the orifice plate moving towards the demolition part;

[0041] Figure 13 Schematic diagram for explaining the structure in which the demolition part is provided with a puncturing needle on the side facing the orifice plate;

[0042] Figure 14 Schematic diagram for explaining the opening and closing structure of the one-way valve;

[0043] Figure 15 Schematic diagram for explaining the connection between the sealing cap and the joint;

[0044] In the figure, 1 is the urinary catheter body; 11 is the proximal end; 12 is the distal end; 13 is the balloon; 14 is the liquid injection pipeline; 15 is the liquid inlet end; 16 is the liquid outlet end; 2 is the liquid filling assembly; 21 is the joint; 211 is the accommodation chamber; 2111 is the first channel; 2112 is the second channel; 2113 is the limiting channel; 22 is the orifice plate; 23 is the demolition part; 231 is the limiting section; 2311 is the liquid passing hole channel; 232 is the limiting plate; 24 is the color display liquid sac; 25 is the spring; 26 is the puncturing needle; 27 is the one-way valve; 28 is the sealing cap; 3 is the syringe. Specific implementation

[0045] The technical solutions in the embodiments of the present invention are clearly and completely described below through specific specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Without conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0046] Figure 1—5 shows the main technical content of this embodiment. This specific embodiment provides a urinary catheter with a color - showing bladder. It includes: a catheter body 1, a balloon 13, and a liquid - filling assembly 2. The catheter body 1 has a proximal end 11 inserted into the human body and a distal end 12 left outside the human body. The balloon 13 is arranged on the outer wall of the catheter body 1, and on the outer wall of the catheter body 1, the balloon 13 is closer to the proximal end 11 than the distal end 12. After the catheter body 1 is inserted into the human body, the balloon 13 is located at the position of the patient's bladder neck. Thus, after the balloon 13 expands, the catheter body 1 can be fixed, and the distal end 12 of the catheter body 1 can be externally connected to a urine collection bag for collecting the patient's urine. Among them, the balloon 13 and the catheter body 1 are integrally connected. Additionally, as is well - known to those skilled in the art, between the balloon 13 and the proximal end 11 of the catheter body 1, a urine - guiding hole is opened on the outer wall of the catheter body 1 in the direction from the outer wall to the inner wall.

[0047] Reference Figure 3 —4, to achieve the inflation of the balloon 13, a liquid - injection pipeline 14 is arranged inside the catheter body 1. The liquid - injection pipeline 14 can be formed between the inner wall and the outer wall of the catheter body 1, or the liquid - injection pipeline 14 is formed on the inner wall of the catheter body 1. Among them, the liquid - injection pipeline 14 has an inlet end 15 and an outlet end 16 opposite to each other. The liquid - injection pipeline 14 is connected to the balloon 13 through the outlet end 16. When injecting liquid into the balloon 13, the liquid flows into the balloon 13 from the outlet end 16, thereby achieving the filling and inflation of the balloon 13 and achieving the fixation effect.

[0048] Reference Figure 3 —7, the inlet end 15 is provided with a liquid - filling assembly 2. The liquid - filling assembly 2 includes: a connector 21, an orifice plate 22, a breaking member 23, and a color - showing liquid bladder 24. Among them, the connector 21 is connected to the inlet end 15, and the two can be integrally connected. The connector 21 has a receiving chamber 211, and the receiving chamber 211 is connected to the liquid - injection pipeline 14 through the inlet end 15. During use, a syringe 3 containing liquid (such as normal saline) can be externally connected to the connector 21, and liquid is injected into the balloon 13 through the connector 21 and the liquid - injection pipeline 14.

[0049] Reference Figure 8 , the orifice plate 22 is fixedly arranged in the receiving chamber 211, and the breaking member 23 is slidably arranged in the receiving chamber 211 and is located on the side of the orifice plate 22 away from the inlet end 15. Thus, when the connector 21 is externally connected to the syringe 3, the breaking member 23 abuts against the nipple of the syringe 3 and moves towards the orifice plate 22 under the push of the nipple of the syringe 3. As can be understood by those skilled in the art, the positions of the orifice plate 22 and the breaking member in the receiving chamber 211 can be swapped. Correspondingly, the orifice plate 22 is slidably arranged in the receiving chamber 211, and the breaking member 23 is fixedly arranged in the receiving chamber 211.

[0050] As shown Figure 8 in the figure, the orifice plate 22 is fixedly arranged in the accommodation chamber 211, and the breaking member 23 is slidably arranged in the accommodation chamber 211 and is located on the side of the orifice plate 22 away from the liquid inlet end 15.

[0051] The color-developing liquid sac 24 is arranged between the orifice plate 22 and the breaking member 23. The color-developing liquid sac 24 is filled with a color-developing liquid. When the breaking member 23 moves towards the orifice plate 22, since the orifice plate 22 is fixedly arranged, the breaking member 23 applies a force to the color-developing liquid sac 24. Correspondingly, the orifice plate 22 will also react on the color-developing liquid sac 24, thereby squeezing the color-developing liquid sac 24 and causing the color-developing liquid sac 24 to rupture in the accommodation chamber 211. Then, the color-developing liquid in the color-developing liquid sac 24 flows into the accommodation chamber 211. At this time, by injecting liquid into the accommodation chamber 211 with the syringe 3, the color-developing liquid is mixed with the physiological saline and injected into the balloon 13, so that the balloon 13 is filled and inflated. While the medical staff injects physiological saline into the balloon 13, the mixing of the color-developing liquid and the physiological saline can be completed, so that the medical staff does not have to separately prepare the color-developing liquid and the physiological saline, which improves the speed of injecting the physiological saline mixed with the color-developing liquid into the balloon 13, saves the operation steps before the instrument is placed into the patient's body. At the same time, when the balloon 13 ruptures, the physiological saline containing the color-developing liquid flows into the urine collection bag connected to the urinary catheter body 1 through the urinary catheter body 1. In this way, when the patient has a tube disconnection, it is convenient for the medical staff to quickly judge whether the balloon 13 on the urinary catheter body 1 has ruptured, and then it is convenient for the medical staff to find the cause of the tube disconnection problem.

[0052] In a specific embodiment, the color-developing liquid sac 24 can be made of a plastic film or a polyvinyl alcohol (PVA) film material. Preferably, it is made of a polyvinyl alcohol (PVA) film. The polyvinyl alcohol (PVA) film is water-soluble and will dissolve in the liquid after being broken by the breaking member 23 and washed by the injected liquid. The color-developing liquid filled therein can be prepared by mixing food-grade pigments and physiological saline. Of course, according to the preparation requirements and cost considerations, the material for making the color-developing liquid sac 24 and the material for preparing the color-developing liquid are not limited to the above materials.

[0053] Refer to Figure 6 , the accommodation chamber 211 has a first channel 2111 communicating with the liquid injection channel and a second channel 2112 communicating with the outside. The orifice plate 22 is located between the first channel 2111 and the second channel 2112, and the breaking member 23 is located between the orifice plate 22 and the second channel 2112. Refer to Figure 6, a limiting cavity 2113 is formed from the second channel 2112 in a direction away from the first channel 2111 (the direction indicated by the arrow), and the limiting cavity 2113 is used to limit the breaking member 23 to always move linearly under the push of the nipple of the syringe 3; in a more specific embodiment, the breaking member 23 includes: a limiting section 231 extending into the second channel 2112 and a limiting plate 232 integrally connected to the limiting section 231 and located in the accommodation chamber 211. Refer to Figure 8 , the limiting plate 232 is disposed at one end of the limiting section 231, the color-developing liquid sac 24 is located between the limiting plate 232 and the orifice plate 22, and the length of the limiting section 231 is set so that it will not come out of the limiting cavity 2113 after moving, or rather, the distance between the orifice plate 22 and the second channel 2112 is less than the length of the limiting section 231; in the above setting, as those skilled in the art can understand, the nipple of the syringe 3 is inserted into the limiting cavity 2113 and abuts against the limiting section 231, so as to drive the limiting plate 232 to move towards the orifice plate 22, realizing the pressure on the color-developing liquid sac 24 and causing it to rupture. Among them, in order to ensure the normal injection of liquid into the balloon 13, a liquid passing hole 2311 is formed through the limiting section 231 from the end away from the limiting plate 232 towards the limiting plate 232; after the color-developing liquid sac 24 ruptures, liquid can be injected into the accommodation chamber 211 through the liquid passing hole 2311.

[0054] It is essential that the outer diameter of the limiting section 231 is the same as the inner diameter of the limiting cavity 2113, and the inner diameter of the liquid passing hole 2311 is as small as possible while ensuring that the liquid can flow through quickly, so as to increase the thickness between the outer wall of the limiting section 231 and the inner wall of the liquid passing hole 2311. Furthermore, after the nipple of the syringe 3 is inserted into the limiting cavity 2113, it can abut against the limiting section 231, causing the limiting section 231 to generate a linear displacement relative to the joint member 21.

[0055] Refer to Figure 8 —9, it can be seen that the orifice plate 22 is formed by a circular plate with a number of through holes opened in its thickness. In this way, when injecting liquid from the accommodation chamber 211 into the liquid injection pipe 14, the injected liquid will not be blocked by the orifice plate 22.

[0056] Since the color-developing liquid sac 24 is located between the orifice plate 22 and the limiting plate 232, refer to Figure 8, the thickness of the color-developing liquid sac 24 is set to be able to support the limiting plate 232 to always abut against the second channel 2112. In this way, before the color-developing liquid sac 24 ruptures, the color-developing liquid sac 24 can still support the limiting plate 232, so that the limiting plate 232 is always away from the orifice plate 22, that is, the limiting section 231 is always entirely located within the limiting channel 2113. Furthermore, when the nipple of the syringe 3 is inserted into the limiting channel 2113, the limiting plate 232 can be pushed to directly squeeze the color-developing liquid sac 24, thereby causing the color-developing liquid sac 24 to rupture quickly; it should be noted that after the color-developing liquid sac 24 is caused to rupture, the breaking member 23 does not need to be reset.

[0057] Reference Figure 9 , in this embodiment, the thickness of the color-developing liquid sac 24 can also be set to be insufficient to support the breaking member 23 to always abut against the port of the second channel 2112. In a more specific embodiment, a spring 25 is added in the accommodating chamber 211. The spring 25 is located between the orifice plate 22 and the limiting plate 232, and one end of the spring 25 abuts against the orifice plate 22, and the other end abuts against the limiting plate 232, so that the orifice plate 22 and the limiting plate 232 are always kept away from each other; and, in order to break the color-developing liquid sac 24, a plurality of puncturing needles 26 are arranged on the surface of the limiting plate 232 facing the orifice plate 22, for example Figure 9 , the number of the puncturing needles 26 can be set to four. In this way, when the limiting plate 232 approaches the orifice plate 22, each puncturing needle 26 pierces into the color-developing liquid sac 24, thereby breaking the color-developing liquid sac 24, so that the color-developing liquid in the color-developing liquid sac 24 flows into the accommodating chamber 211; at the same time, under the action of the spring 25, the puncturing needles 26 can be always away from the color-developing liquid sac 24, thereby avoiding the color-developing liquid sac 24 being broken in advance when no liquid is injected into the balloon 13.

[0058] Correspondingly, in order to prevent the color-developing liquid sac 24 from moving within the accommodating chamber 211 and approaching the puncturing needles 26, the color-developing liquid sac 24 can be adhered to the surface of the orifice plate 22 facing the limiting plate 232.

[0059] Reference Figure 10 , as can be understood by those skilled in the art, a plurality of puncturing needles 26 can also be arranged on the surface of the orifice plate 22 facing the limiting plate 232. Correspondingly, the color-developing liquid sac 24 is adhered to the surface of the limiting plate 232 facing the orifice plate 22, so that under the drive of the limiting section 231, the limiting plate 232 drives the color-developing liquid sac 24 to move towards the orifice plate 22, and then the puncturing needles 26 pierce into the color-developing liquid sac 24, thereby causing the color-developing liquid in the color-developing liquid sac 24 to flow into the accommodating chamber 211.

[0060] Figure 11 —13 is a schematic structural diagram for explaining another schematic embodiment of the liquid filling assembly 2, Figures 11 to 13It is shown that the orifice plate 22 is slidably disposed within the accommodation chamber 211, and the breaking member 23 is fixedly disposed within the accommodation chamber 211. Similar to the above-described embodiment, the accommodation chamber 211 includes a first channel 2111 communicating with the liquid injection channel and a second channel 2112 communicating with the outside; differently, the breaking member 23 includes: a limiting section 231 extending towards the first channel 2111 and a limiting plate 232 integrally connected to the limiting section 231 and located within the accommodation chamber 211. The limiting plate 232 is fixedly disposed within the accommodation chamber 211, the orifice plate 22 is slidably disposed within the accommodation chamber 211, and the orifice plate 22 is located between the limiting plate 232 and the second channel 2112; in this embodiment, the nipple of the syringe 3 is inserted into the second channel 2112. At this time, the nipple of the syringe 3 abuts against the orifice plate 22, thereby pushing the orifice plate 22 towards the first channel 2111, and further squeezing the color display liquid sac 24 located between the orifice plate 22 and the breaking member 23 to cause the color display liquid sac 24 to rupture within the accommodation chamber 211.

[0061] In a more specific embodiment, referring to Figure 11 , the cross-section of the accommodation chamber 211 in a direction perpendicular to its depth extension direction is circular. Correspondingly, the outer contour of the orifice plate 22 is also circular, and the outer diameter of the orifice plate 22 is the same as the inner diameter of the accommodation chamber 211. In this setting, the inner wall of the accommodation chamber 211 can limit the position of the orifice plate 22. Thus, when the orifice plate 22 receives a thrust force, it can only move linearly along the depth direction of the accommodation chamber 211.

[0062] In addition, in combination with Figure 6 and Figure 11 , as can be understood by those skilled in the art, in the above setting, the thickness of the accommodation chamber 211 between the inner wall of the second channel 2112 and the outer wall of the joint member 21 should be as thin as possible, so that the nipple of the syringe 3 can enter the accommodation chamber 211 more, thereby causing a larger displacement of the orifice plate 22, and ensuring that the color display liquid sac 24 can be squeezed and broken.

[0063] Since the color display liquid sac 24 is located between the orifice plate 22 and the limiting plate 232, referring to Figure 11 , the thickness of the color display liquid sac 24 is set to be able to support the orifice plate 22 to always abut against the second channel 2112. Thus, before the color display liquid sac 24 ruptures, the color display liquid sac 24 can also support the orifice plate 22, so that the orifice plate 22 is always away from the limiting plate 232. Then, when the nipple of the syringe 3 is inserted into the second channel 2112, it can push the orifice plate 22 to directly squeeze the color display liquid sac 24, causing the color display liquid sac 24 to rupture quickly; it should be noted that after the color display liquid sac 24 is ruptured, the orifice plate 22 does not need to be reset.

[0064] Referring to Figure 12, in this embodiment, the thickness of the color developing liquid sac 24 can also be set to be insufficient to support the orifice plate 22 to always abut against the port of the second channel 2112. In a more specific embodiment, a spring 25 is additionally provided in the accommodation chamber 211. The spring 25 is located between the orifice plate 22 and the limiting plate 232, and one end of the spring 25 abuts against the orifice plate 22 and the other end abuts against the limiting plate 232, so that the orifice plate 22 and the limiting plate 232 always keep away from each other; and, in order to realize the breaking of the color developing liquid sac 24, a plurality of puncturing needles 26 are arranged on the surface of the orifice plate 22 facing the limiting plate 232. In this way, when the orifice plate 22 approaches the limiting plate 232, each puncturing needle 26 pierces into the color developing liquid sac 24, thereby breaking the color developing liquid sac 24 and causing the color developing liquid in the color developing liquid sac 24 to flow into the accommodation chamber 211; meanwhile, under the action of the spring 25, the puncturing needles 26 can always be away from the color developing liquid sac 24, thereby avoiding the premature breaking of the color developing liquid sac 24 when no liquid is injected into the balloon 13.

[0065] Correspondingly, in order to prevent the color developing liquid sac 24 from moving in the accommodation chamber 211 and approaching the puncturing needles 26, the color developing liquid sac 24 can be adhered to the surface of the limiting plate 232 facing the orifice plate 22.

[0066] Reference Figure 13 , as can be understood by those skilled in the art, a plurality of puncturing needles 26 can also be arranged on the surface of the limiting plate 232 facing the orifice plate 22. Correspondingly, the color developing liquid sac 24 is adhered to the surface of the orifice plate 22 facing the limiting plate 232, so that under the drive of the orifice plate 22, the color developing liquid sac 24 moves towards the limiting plate 232, and then the puncturing needles 26 pierce into the color developing liquid sac 24, thereby causing the color developing liquid in the color developing liquid sac 24 to flow into the accommodation chamber 211.

[0067] Reference Figure 14 , further comprising a one-way valve 27 disposed in the first channel 2111. The one-way valve 27 is configured to allow the liquid to flow from the accommodation chamber 211 into the injection pipe 14. During use, by injecting liquid into the injection pipe 14, at this time, the one-way valve 27 is pushed open inward under the liquid pressure and enters the injection pipe 14, thereby causing the balloon 13 to expand and fill; after the balloon 13 is expanded and filled, the one-way valve 27 closes, preventing the liquid from flowing back, and thus keeping the balloon 13 in a filled state all the time.

[0068] Reference Figure 15 , further provided with a sealing cap 28 for closing the second channel 2112. In a more specific embodiment, an external thread is provided on the outer wall of the joint member 21, and an internal thread is provided on the inner wall of the sealing cap 28. Through the cooperation of the internal thread and the external thread, the sealing cap 28 is connected to the joint member 21, thereby sealing the second channel 2112.

[0069] As is well known to those skilled in the art, the urinary catheter body is usually made of polyvinyl chloride, latex material, silicone material or rubber material. To ensure that the patient's pain is reduced during catheterization, in this example, the urinary catheter body is made of silicone material.

[0070] The description of the above embodiments is only for understanding the present invention. It should be noted that for those of ordinary skill in the art, several improvements can be made to the present invention without departing from the principle of the present invention, and these improvements will also fall within the protection scope of the claims of the present invention.

Claims

1. A urinary catheter with a color-developing capsule, comprising a urinary catheter body and a balloon disposed on the outer wall of the urinary catheter body, wherein the urinary catheter body has a liquid injection channel, wherein: The injection pipe has a liquid inlet end and a liquid outlet end opposite to each other, and the injection pipe is connected to the balloon through the liquid outlet end; characterized in that it also includes: A liquid filling assembly, comprising a joint member, the joint member being connected to the liquid inlet end, wherein the joint member has a receiving chamber, and the receiving chamber is in communication with the liquid filling pipeline; and an orifice plate, disposed in the containing chamber; and A breaking piece is disposed in the accommodating chamber, wherein one of the breaking piece and the orifice plate can move relative to the other, so that the breaking piece approaches the orifice plate or the orifice plate approaches the breaking piece; and A color developing liquid capsule is loaded with a color developing liquid, wherein the color developing liquid capsule is arranged between the orifice plate and the breaking piece, and when the breaking piece and the orifice plate move relative to each other, the breaking piece or the orifice plate applies force to the color developing liquid capsule and causes the color developing liquid capsule to rupture in the containing chamber, so that the color developing liquid in the color developing liquid capsule flows into the containing chamber.

2. The urinary catheter with a chromogenic capsule according to claim 1, characterized in that: The accommodating chamber comprises: a first cavity channel connected to the injection channel and a second cavity channel connected to the outside; The orifice plate is fixedly disposed in the accommodating chamber; The breaking piece is slidably configured in the accommodating chamber, wherein the breaking piece is located between the orifice plate and the second cavity. When the breaking piece is pushed to move toward the first cavity, the breaking piece applies pressure to the color-developing liquid capsule, and the orifice plate reacts on the outer surface of the color-developing liquid capsule to cause the color-developing liquid capsule to rupture in the accommodating chamber.

3. The urinary catheter with a chromogenic capsule according to claim 2, characterized in that: The demolition component comprises: a limit section and a limit plate, wherein the limit plate is arranged at one end of the limit section, wherein a liquid passage is provided from one end of the limit section away from the limit plate to the limit plate; Wherein, a limited cavity is formed by the second cavity in a direction away from the first cavity, and at least a part of the limited section is always located in the limited cavity.

4. The urinary catheter with a chromogenic capsule according to claim 3, characterized in that: The distance between the orifice plate and the second cavity is smaller than the length of the limiting section; The outer diameter of the limiting section is the same as the inner diameter of the limiting cavity; The inner diameter of the liquid passage is smaller than the inner diameter of the limiting cavity.

5. The urinary catheter with a chromogenic capsule according to claim 1, characterized in that: The accommodating chamber comprises: a first cavity and a second cavity, wherein the first cavity is connected to the injection channel; The demolition component is fixedly disposed in the accommodating chamber; The orifice plate is slidably configured in the accommodating chamber, wherein the orifice plate is located between the breaking piece and the second cavity; wherein, when the orifice plate is pushed to move toward the first cavity, the orifice plate pushes the color-developing liquid capsule to move toward the breaking piece, so that the orifice plate and the breaking piece simultaneously apply force to the outer surface of the color-developing liquid capsule to cause the color-developing liquid capsule to rupture in the accommodating chamber.

6. The urinary catheter with a chromogenic capsule according to claim 5, characterized in that: The cross section of the accommodating chamber in a direction perpendicular to its own depth extension is circular, and accordingly, the shape of the outer contour of the orifice plate is also circular, and the outer diameter of the orifice plate is the same as the inner diameter of the accommodating chamber.

7. The urinary catheter with a chromogenic capsule according to claim 2 or 5, characterized in that: It also includes a spring, which is arranged in the accommodating chamber, wherein one end of the spring abuts against the orifice plate, and the other end of the spring abuts against the breaking piece, so that the orifice plate and the breaking piece are always kept apart.

8. The urinary catheter with a chromogenic capsule according to claim 2 or 5, characterized in that: A plurality of puncture needles are arranged on one side of the demolition piece facing the orifice plate.

9. The urinary catheter with a chromogenic capsule according to claim 2 or 5, characterized in that: A plurality of puncture needles are arranged on one side of the orifice plate facing the breaking piece.

10. The urinary catheter with a chromogenic capsule according to claim 2 or 5, characterized in that: Also includes: A one-way valve is disposed in the first cavity, wherein the one-way valve is constructed to allow liquid to flow from the accommodating chamber into the liquid injection pipeline.

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