A urinary catheter with a chromogenic capsule

Abstract

The present invention belongs to the field of urinary catheter instruments, and specifically relates to a urinary catheter with a color-developing capsule, comprising: a urinary catheter body, a balloon arranged on the outer wall of the urinary catheter body, the urinary catheter body having an injection pipe, the injection pipe having a liquid inlet end and a liquid outlet end, and the injection pipe is connected to the balloon; a liquid filling component, comprising a connector, the connector is connected to the liquid inlet end, the connector has a accommodating chamber, and the accommodating chamber is connected to the injection pipe; an orifice plate, arranged in the accommodating chamber; a breaking piece, arranged in the accommodating chamber, the breaking piece and the orifice plate can move relative to each other, so that the breaking piece approaches the orifice plate or the orifice plate approaches the breaking piece; a color-developing liquid capsule, the color-developing liquid capsule is loaded with color-developing liquid, the color-developing liquid capsule is arranged between the orifice plate and the breaking piece, 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 accommodating chamber, so that the color-developing liquid in the color-developing liquid capsule flows into the accommodating chamber.

Description

Technical Field

[0001] The invention belongs to the field of urinary catheter instruments, and in particular relates to a urinary catheter with a color-developing capsule. Background Art

[0002] A urinary catheter is a medical device that assists urination. It is generally inserted into the bladder through the urethra to drain urine. In the structure of the urinary catheter, a balloon is provided at the end that is inserted into the bladder, and a balloon valve is provided at the end outside the patient's body. Through the balloon valve, physiological saline can be injected into the balloon to fill the balloon and fix the catheter so that it can remain in the bladder to prevent it from falling out.

[0003] However, the use of urinary catheters is not without risks. For example, one of the most common risks in clinical practice is unplanned catheter removal, where the catheter becomes dislodged due to patient behavior or external factors. This can occur for a variety of reasons, including the gradual loss of fluid from the balloon, which reduces its volume and loses its securement. Alternatively, increased intra-abdominal pressure can cause the bladder fluid to press against the balloon surface, increasing pressure on the balloon surface and ultimately causing the balloon to rupture and lose its securement. Although the catheter can still drain urine for a period of time, the loss of the balloon's securement can eventually lead to one end of the catheter slipping into the patient's urethra. Furthermore, because the balloon valve of traditional urinary catheters is typically a one-way valve and is filled with a transparent liquid (normal saline), if the catheter becomes dislodged, resulting in abdominal distension and difficulty urinating, medical staff cannot visually monitor the balloon's inflation status from outside the patient's body, making it difficult for them to provide appropriate treatment.

[0004] In view of the above problems, the present invention provides a urinary catheter with a color-developing capsule. Summary of the Invention

[0005] To overcome the problems raised in the background art, the present invention provides a urinary catheter with a color-displaying balloon. When the urinary catheter becomes detached, medical personnel can determine the cause of the detachment from outside the patient's body, i.e., whether the detachment is caused by balloon rupture or balloon leakage, thereby facilitating appropriate treatment by medical personnel. The present invention specifically adopts the following technical solution, which comprises: a urinary catheter body, and a balloon disposed on the outer wall of the urinary catheter body, wherein the urinary catheter body has an injection channel, wherein the injection channel has a liquid inlet end and a liquid outlet end opposite to each other, and the injection channel is connected to the balloon through the liquid outlet end.

[0006] a liquid filling assembly, comprising a connector, the connector being connected to the liquid inlet end, wherein the connector has a receiving chamber, and the receiving chamber is in communication with the liquid filling pipe; and

[0007] an orifice plate, disposed in the accommodating chamber; and

[0008] a breaking piece disposed in the accommodating chamber, wherein one of the breaking piece and the orifice plate is movable relative to the other, so that the breaking piece approaches the orifice plate or the orifice plate approaches the breaking piece; and

[0009] A color-developing liquid capsule is loaded with color-developing liquid, wherein the color-developing liquid capsule is arranged between the orifice plate and the rupture piece. When liquid is injected into the balloon through the connector, the rupture piece and the orifice plate move relative to each other, so that the rupture piece or the orifice plate applies force to the color-developing liquid capsule and causes the color-developing liquid capsule to rupture in the accommodating chamber, so that the color-developing liquid in the color-developing liquid capsule flows into the accommodating chamber.

[0010] In some embodiments of the present application, the accommodating chamber has: a first cavity communicating with the injection pipe and a second cavity communicating with the outside;

[0011] The orifice plate is fixedly disposed in the accommodating chamber;

[0012] 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.

[0013] Furthermore, the demolition component includes: a limiting section and a limiting plate, wherein the limiting plate is arranged at one end of the limiting section, wherein a liquid passage is provided from one end of the limiting section away from the limiting plate and passes through the limiting plate;

[0014] 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.

[0015] Furthermore, the distance between the orifice plate and the second cavity is smaller 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 passage is smaller than the inner diameter of the limiting cavity.

[0018] In some embodiments of the present application, the accommodating chamber includes: a first cavity and a second cavity, the first cavity being connected to the injection pipe;

[0019] The demolition component is fixedly disposed in the accommodating chamber;

[0020] 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.

[0021] Furthermore, the cross section of the accommodating chamber in a direction perpendicular to its own depth extension is circular. Accordingly, 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.

[0022] In some embodiments of the present application, a spring is further included, 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.

[0023] In some embodiments of the present application, a plurality of puncture needles are configured on a side of the rupture member facing the orifice plate.

[0024] In some embodiments of the present application, a plurality of puncture needles are configured on a side of the orifice plate facing the rupture component.

[0025] In some embodiments of the present application, it further includes: a one-way valve, which is configured in the first cavity, wherein the one-way valve is constructed to allow liquid to flow from the accommodating chamber into the liquid injection pipe.

[0026] Beneficial effects of the present invention:

[0027] 1. By setting a liquid filling component, when in use, the syringe containing physiological saline is connected to the connector. During the connection process, the nipple of the syringe applies force to one of the orifice plate or the rupture piece, so that the rupture piece moves toward the orifice plate or the orifice plate moves toward the rupture piece, thereby squeezing the color-developing liquid sac between the orifice plate and the rupture piece, thereby causing the color-developing liquid sac to rupture, so that the color-developing liquid in the color-developing liquid sac flows into the containing chamber, and then the physiological saline in the syringe is pushed to mix the color-developing liquid and the physiological saline and be injected into the balloon. When the balloon ruptures, the physiological saline containing the color-developing liquid flows through the catheter body into the urine collection bag connected to the catheter body. In this way, when the patient is out of the tube, it is convenient for medical staff to quickly determine whether the balloon on the catheter body is ruptured, and it is convenient for medical staff to find the cause of the tube detachment problem.

[0028] 2. By providing the orifice plate, the breaking piece and the color-developing liquid capsule, when in use, after the syringe containing physiological saline is connected to the connector, the nipple of the syringe applies force to the orifice plate or one of the breaking pieces, so that the breaking piece moves toward the orifice plate or the orifice plate approaches the breaking piece, thereby completing the breaking of the color-developing liquid capsule and allowing the color-developing liquid to flow into the containing chamber. In this way, while the medical staff injects physiological saline into the balloon, the color-developing liquid and the physiological saline can be mixed, so that the medical staff no longer needs to separately mix the color-developing liquid and the physiological saline, thereby increasing the speed of injecting the physiological saline mixed with the color-developing liquid into the balloon and saving the operating steps before the device is placed into the patient's body.

[0029] 3. By arranging a puncture needle on one side of the rupture piece facing the orifice plate or the end face of the orifice plate facing the rupture piece, when in use, when the orifice plate or the rupture piece moves under the push of the syringe nipple, the puncture needle can be made to penetrate into the color-developing capsule, thereby quickly rupturing the color-developing capsule and allowing the color-developing liquid in the color-developing capsule to quickly flow into the containing chamber, thereby improving the rupture efficiency of the color-developing capsule and further improving the speed of injecting saline mixed with the color-developing liquid into the balloon. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram illustrating the overall structure of the urethra;

[0031] Figure 2 A schematic diagram illustrating the structure of the balloon after inflation;

[0032] Figure 3 A schematic diagram illustrating the internal structure of the urethra;

[0033] Figure 4 A schematic diagram illustrating the location of the liquid outlet of the liquid injection pipeline;

[0034] Figure 5 A schematic diagram illustrating the overall structure of the liquid-filled component;

[0035] Figure 6 A schematic diagram illustrating the structure of the accommodating chamber of the connector;

[0036] Figure 7 A schematic diagram illustrating the structure of the syringe and the liquid filling component;

[0037] Figure 8 A schematic diagram illustrating the process of the rupture piece and the orifice plate rupturing the color-developing liquid capsule;

[0038] Figure 9 A schematic diagram illustrating the structure of a puncture needle provided on a limit plate of a demolition component;

[0039] Figure 10A schematic diagram illustrating the structure of the orifice plate with a puncture needle;

[0040] Figure 11 Schematic diagram for illustrating another embodiment of the liquid filling component

[0041] Figure 12 A schematic diagram illustrating the structure of the orifice plate moving toward the demolition part;

[0042] Figure 13 A schematic diagram illustrating the structure of a puncture needle provided on the side of the rupture member facing the orifice plate;

[0043] Figure 14 A schematic diagram illustrating the opening and closing structure of a one-way valve;

[0044] Figure 15 A schematic diagram illustrating the connection between the sealing cap and the connector;

[0045] In the figure, 1. Catheter body; 11. Proximal end; 12. Distal end; 13. Balloon; 14. Liquid injection pipe; 15. Liquid inlet end; 16. Liquid outlet end; 2. Liquid filling component; 21. Connector; 211. Accommodating chamber; 2111. First cavity; 2112. Second cavity; 2113. Limiting cavity; 22. Orifice plate; 23. Breaking piece; 231. Limiting section; 2311. Liquid passage; 232. Limiting plate; 24. Colorimetric liquid capsule; 25. Spring; 26. Puncture needle; 27. One-way valve; 28. Sealing cap; 3. Syringe. DETAILED DESCRIPTION

[0046] The following is a clear and complete description of the technical solutions in the embodiments of the present invention through specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of 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 methods. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0047] Figure 1-5 shows the main technical content of this embodiment. This specific embodiment provides a catheter with a colorimetric capsule, which includes: a catheter body 1, a balloon 13, and a liquid-filled component 2; the catheter body 1 has a proximal end 11 inserted into the human body and a distal end 12 retained outside the human body; the balloon 13 is arranged on the outer wall of the catheter body 1, and the balloon 13 is closer to the proximal end 11 on the outer wall of the catheter body 1 than the distal end 12. After the catheter body 1 is inserted into the human body, the balloon 13 is located at the patient's bladder neck, so that the catheter body 1 can be fixed after the balloon 13 is expanded, and the distal end 12 of the catheter body 1 can be connected to an external urine collection bag for collecting the patient's urine, wherein the balloon 13 is integrally connected to the catheter body 1; in addition, as is well known to those skilled in the art, a catheter hole is opened on the outer wall of the catheter body 1 toward the inner wall between the balloon 13 and the proximal end 11 of the catheter body 1.

[0048] refer to Figure 3 —4. In order to expand the balloon 13, an injection pipe 14 is set in the catheter body 1. The injection pipe 14 can be formed between the inner wall and the outer wall of the catheter body 1, or the injection pipe 14 is formed on the inner wall of the catheter body 1; wherein, the injection pipe 14 has a liquid inlet end 15 and a liquid outlet end 16 opposite to each other, and the injection pipe 14 is connected to the balloon 13 through the liquid outlet end 16. When liquid is injected into the balloon 13, the liquid flows into the balloon 13 from the liquid outlet end 16, thereby realizing the filling and expansion of the balloon 13 and achieving a fixation effect.

[0049] refer to Figure 3 —7. The liquid inlet end 15 is provided with a liquid filling component 2, which includes: a connector 21, an orifice plate 22, a breaking component 23 and a color developing liquid capsule 24, wherein the connector 21 is connected to the liquid inlet end 15, and the two can be set to be connected as an integral whole, wherein the connector 21 has a accommodating chamber 211, and the accommodating chamber 211 is connected to the injection pipe 14 through the liquid inlet end 15. When in use, a syringe 3 containing liquid (such as saline) can be connected to the external part through the connector 21, and liquid can be injected into the balloon 13 through the injection pipe 14 through the connector 21.

[0050] refer to Figure 8 The orifice plate 22 is fixedly arranged in the accommodating chamber 211, and the breaking piece 23 is slidably arranged in the accommodating chamber 211 and is located on the side of the orifice plate 22 away from the liquid inlet end 15. Therefore, when the connector 21 is externally connected to the syringe 3, the breaking piece 23 abuts against the nipple of the syringe 3 and moves toward 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 piece in the accommodating chamber 211 can be exchanged. Accordingly, the orifice plate 22 is slidably configured in the accommodating chamber 211, and the breaking piece 23 is fixedly arranged in the accommodating chamber 211.

[0051] like Figure 8 As shown, the orifice plate 22 is fixedly disposed in the accommodating chamber 211 , and the breaking member 23 is slidably disposed in the accommodating chamber 211 and is located on a side of the orifice plate 22 away from the liquid inlet end 15 .

[0052] The color-developing liquid capsule 24 is arranged between the orifice plate 22 and the breaking piece 23. The color-developing liquid capsule 24 is loaded with a color-developing liquid. When the breaking piece 23 moves toward the orifice plate 22, since the orifice plate 22 is fixed, the breaking piece 23 applies force to the color-developing liquid capsule 24. Correspondingly, the orifice plate 22 will also react on the color-developing liquid capsule 24, thereby squeezing the color-developing liquid capsule 24, causing the color-developing liquid capsule 24 to rupture in the accommodating chamber 211, and then causing the color-developing liquid in the color-developing liquid capsule 24 to flow into the accommodating chamber 211. At this time, liquid is pushed into the accommodating chamber 211 through the syringe 3, so that the color-developing liquid and the physiological saline are mixed and injected into the balloon 13, thereby filling the balloon 13. The balloon 13 is full and expanded. When the medical staff injects normal saline into the balloon 13, the color-developing liquid and the normal saline are mixed, so that the medical staff no longer have to mix the color-developing liquid and the normal saline separately, thereby increasing the speed of injecting the normal saline mixed with the color-developing liquid into the balloon 13, saving the operation steps before the device is placed into the patient's body. At the same time, when the balloon 13 ruptures, the normal saline containing the color-developing liquid flows into the urine collection bag connected to the catheter body 1 through the catheter body 1. In this way, when the patient's tube is out of place, it is convenient for the medical staff to quickly judge whether the balloon 13 on the catheter body 1 is ruptured, and then it is convenient for the medical staff to find the cause of the tube out of place.

[0053] In a specific embodiment, the color-developing liquid capsule 24 can be made of a plastic film or a polyvinyl alcohol (PVA) film, preferably a polyvinyl alcohol (PVA) film. The polyvinyl alcohol (PVA) film is water-soluble and dissolves in the liquid after being flushed by the injected liquid after the ruptured component 23 is ruptured. The color-developing liquid contained therein can be made of a mixture of food-grade pigment and physiological saline. Of course, the materials for the color-developing liquid capsule 24 and the color-developing liquid are not limited to the above materials, depending on production requirements and cost considerations.

[0054] refer to Figure 6 The accommodating chamber 211 has a first cavity 2111 connected to the injection pipe and a second cavity 2112 connected to the outside. The orifice plate 22 is located between the first cavity 2111 and the second cavity 2112. The breaking piece 23 is located between the orifice plate 22 and the second cavity 2112. Figure 6, a limited position cavity 2113 (in the direction indicated by the arrow) is formed by the second cavity 2112 in a direction away from the first cavity 2111, and the limited position cavity 2113 is used to limit the detachment member 23 from always moving in a straight line under the push of the nipple of the syringe 3; in a more specific embodiment, the detachment member 23 includes: a limiting section 231 extending into the second cavity 2112 and a limiting plate 232 integrally connected to the limiting section 231 and located in the accommodating chamber 211, Figure 8 The limiting plate 232 is disposed at one end of the limiting section 231, and the color-developing liquid capsule 24 is located between the limiting plate 232 and the orifice plate 22. The length of the limiting section 231 is set so that it will not fall out of the limiting cavity 2113 after movement. In other words, the distance between the orifice plate 22 and the second cavity 2112 is less than the length of the limiting section 231. Under the above-mentioned configuration, as will be understood by those skilled in the art, the nipple of the syringe 3 is inserted into the limiting cavity 2113 and abuts against the limiting section 231, thereby driving the limiting plate 232 toward the orifice plate 22, thereby applying pressure to the color-developing liquid capsule 24 and causing it to rupture. To ensure normal injection of liquid into the balloon 13, a liquid passage 2311 is formed from the end of the limiting section 231 away from the limiting plate 232 and extending toward the limiting plate 232. After the color-developing liquid capsule 24 ruptures, liquid can be injected into the accommodating chamber 211 through the liquid passage 2311.

[0055] 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 passage 2311 is as small as possible from the inner diameter of the limiting cavity 2113 while ensuring that the liquid can flow through quickly, thereby increasing the thickness between the outer wall of the limiting section 231 and the inner wall of the liquid passage 2311, and then after the nipple of the syringe 3 is inserted into the limiting cavity 2113, it can form abutment with the limiting section 231, so that the limiting section 231 produces a linear displacement relative to the connector 21.

[0056] refer to Figure 8 As can be seen from FIG. 9 , the orifice plate 22 is formed by a circular plate with a plurality of through holes formed in its thickness. Thus, when liquid is injected into the injection pipe 14 through the accommodating chamber 211 , the injected liquid will not be blocked by the orifice plate 22 .

[0057] Since the color developing liquid capsule 24 is located between the orifice plate 22 and the limiting plate 232, refer to Figure 8The thickness of the color-developing liquid capsule 24 is set to be able to support the limiting plate 232 to always be against the second cavity 2112, so that before the color-developing liquid capsule 24 ruptures, the color-developing liquid capsule 24 can also 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 located in the limiting cavity 2113, and then when the nipple of the syringe 3 is inserted into the limiting cavity 2113, the limiting plate 232 can be pushed to directly squeeze the color-developing liquid capsule 24, thereby causing the color-developing liquid capsule 24 to rupture quickly; it should be noted that after the color-developing liquid capsule 24 is ruptured, the breaking piece 23 does not need to be reset.

[0058] refer to Figure 9 In this embodiment, the thickness of the color-developing liquid capsule 24 can also be set to be insufficient to support the breaking piece 23 always against the port of the second cavity 2112. In a more specific embodiment, a spring 25 is added in the accommodating chamber 211, and the spring 25 is located between the orifice plate 22 and the limiting plate 232, and one end of the spring 25 is against the orifice plate 22, and the other end is 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 realize the breaking of the color-developing liquid capsule 24, a plurality of puncture needles 26 are set on the side of the limiting plate 232 facing the orifice plate 22, for example Figure 9 The number of puncture needles 26 can be set to four, so that when the limit plate 232 approaches the orifice plate 22, each puncture needle 26 pierces the color-developing liquid capsule 24, thereby breaking the color-developing liquid capsule 24, so that the color-developing liquid in the color-developing liquid capsule 24 flows into the accommodating chamber 211; at the same time, under the action of the spring 25, the puncture needle 26 can always be kept away from the color-developing liquid capsule 24, thereby preventing the color-developing liquid capsule 24 from being broken in advance when liquid is not injected into the balloon 13.

[0059] Accordingly, to prevent the color-developing liquid capsule 24 from moving in the accommodating chamber 211 and approaching the puncture needle 26 , the color-developing liquid capsule 24 can be adhered to the surface of the orifice plate 22 facing the limiting plate 232 .

[0060] refer to Figure 10 As can be understood by those skilled in the art, multiple puncture needles 26 can also be set on the side of the orifice plate 22 facing the limiting plate 232. Accordingly, the color-developing liquid capsule 24 is adhered to the side 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 capsule 24 to move toward the orifice plate 22, and then the puncture needles 26 are inserted into the color-developing liquid capsule 24, so that the color-developing liquid in the color-developing liquid capsule 24 flows into the containing chamber 211.

[0061] Figure 11 —13 is a schematic structural diagram for illustrating another exemplary embodiment of the liquid-filled component 2, Figures 11 to 13As shown, the orifice plate 22 is slidably arranged in the accommodating chamber 211, and the demolition piece 23 is fixedly arranged in the accommodating chamber 211. The same as the above embodiment is that the accommodating chamber 211 includes a first cavity 2111 connected to the injection pipe and a second cavity 2112 connected to the outside; the difference is that the demolition piece 23 includes: a limiting section 231 extending in the direction of the first cavity 2111 and a limiting plate 232 integrally connected to the limiting section 231 and located in the accommodating chamber 211, and the limiting plate 232 is fixed. The orifice plate 22 is fixedly configured in the accommodating chamber 211, and the orifice plate 22 is slidably configured in the accommodating chamber 211, and the orifice plate 22 is located between the limiting plate 232 and the second cavity 2112; in this embodiment, the nipple of the syringe 3 is inserted into the second cavity 2112. At this time, the nipple of the syringe 3 abuts the orifice plate 22, thereby pushing the orifice plate 22 toward the first cavity 2111, and then squeezing the color-developing liquid capsule 24 located between the orifice plate 22 and the breaking piece 23, so as to cause the color-developing liquid capsule 24 to rupture in the accommodating chamber 211.

[0062] In a more specific embodiment, referring to Figure 11 The cross-section of the accommodating chamber 211 in the direction perpendicular to its own depth extension is circular. Correspondingly, the shape of 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 accommodating chamber 211. Under this setting, the inner wall of the accommodating chamber 211 can limit the orifice plate 22, and then when the orifice plate 22 receives thrust, it can only move linearly along the depth direction of the accommodating chamber 211.

[0063] In addition, combined Figure 6 and Figure 11 From the perspective of the present invention, as can be understood by those skilled in the art, under the above-mentioned setting, the thickness of the accommodating chamber 211 between the inner wall of the second cavity 2112 and the outer wall of the connector 21 should be as thin as possible, so that the nipple of the syringe 3 can enter the accommodating chamber 211 more, thereby causing the orifice plate 22 to produce a larger displacement, thereby ensuring that the color-developing liquid capsule 24 can be squeezed.

[0064] Since the color developing liquid capsule 24 is located between the orifice plate 22 and the limiting plate 232, refer to Figure 11 The thickness of the color-developing liquid capsule 24 is set to be able to support the orifice plate 22 to always be against the second cavity 2112, so that before the color-developing liquid capsule 24 ruptures, the color-developing liquid capsule 24 can also support the orifice plate 22, so that the orifice plate 22 is always away from the limiting plate 232, and then when the nipple of the syringe 3 is inserted into the second cavity 2112, the orifice plate 22 can be pushed to directly squeeze the color-developing liquid capsule 24, thereby causing the color-developing liquid capsule 24 to rupture quickly; it should be noted that after the color-developing liquid capsule 24 ruptures, the orifice plate 22 does not need to be reset.

[0065] refer to Figure 12In this embodiment, the thickness of the color-developing liquid capsule 24 can also be set to be insufficient to support the orifice plate 22 always against the end of the second cavity 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 limit plate 232, and one end of the spring 25 is in contact with the orifice plate 22, and the other end is in contact with the limit plate 232, so that the orifice plate 22 and the limit plate 232 are always kept away from each other; and in order to achieve the purpose of breaking the color-developing liquid capsule 24 A plurality of puncture needles 26 are provided on one side of the orifice plate 22 facing the limiting plate 232, so that when the orifice plate 22 approaches the limiting plate 232, each puncture needle 26 pierces the color-developing liquid capsule 24, thereby breaking the color-developing liquid capsule 24, so that the color-developing liquid in the color-developing liquid capsule 24 flows into the containing chamber 211; at the same time, under the action of the spring 25, the puncture needle 26 can always be kept away from the color-developing liquid capsule 24, thereby avoiding the color-developing liquid capsule 24 from being broken in advance when the liquid is not injected into the balloon 13.

[0066] Accordingly, to prevent the color-developing liquid capsule 24 from moving in the accommodating chamber 211 and approaching the puncture needle 26 , the color-developing liquid capsule 24 can be adhered to the side of the limiting plate 232 facing the orifice plate 22 .

[0067] refer to Figure 13 As can be understood by those skilled in the art, multiple puncture needles 26 can also be set on the side of the limiting plate 232 facing the orifice plate 22. Accordingly, the color-developing liquid capsule 24 is adhered to the side of the orifice plate 22 facing the limiting plate 232, so that the color-developing liquid capsule 24 moves toward the limiting plate 232 under the drive of the orifice plate 22, and then the puncture needles 26 pierce the color-developing liquid capsule 24, so that the color-developing liquid in the color-developing liquid capsule 24 flows into the containing chamber 211.

[0068] refer to Figure 14 , and also includes a one-way valve 27, which is arranged in the first cavity 2111, wherein the one-way valve 27 is constructed to allow liquid to flow from the accommodating chamber 211 into the injection pipe 14. When in use, by injecting liquid into the injection pipe 14, the one-way valve 27 is pushed open under the liquid pressure, thereby entering the injection pipe 14, thereby filling and expanding the balloon 13; after the balloon 13 is filled and expanded, the one-way valve 27 is closed, so that the liquid will not flow back, thereby keeping the balloon 13 in a filled state at all times.

[0069] refer to Figure 15 A sealing cap 28 is also provided to close the second cavity 2112. In a more specific embodiment, an external thread is provided on the outer wall of the connector 21, and an internal thread is provided on the inner wall of the sealing cap 28. The sealing cap 28 is connected to the connector 21 through the cooperation of the internal thread and the external thread, thereby sealing the second cavity 2112.

[0070] As is well known to those skilled in the art, the catheter body is usually made of polyvinyl chloride, latex material, silicone material or rubber material. In order to reduce the patient's pain during intubation, in this example, the catheter body is made of silicone material.

[0071] The above embodiments are only for understanding the present invention. It should be noted that, for those skilled in the art, several improvements can be made to the present invention without departing from the principles of the present invention, and these improvements will also fall within the scope of protection of the claims of the present invention.

Claims

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

2. The urinary catheter with a color-developing capsule according to claim 1, characterized in that: The accommodating chamber comprises: a first cavity communicating with the liquid injection pipe and a second cavity communicating with 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 color-developing capsule according to claim 2, characterized in that: The breaking member includes: a limiting section and a limiting plate, wherein the limiting plate is arranged at one end of the limiting section, wherein a liquid passage is provided from the end of the limiting section away from the limiting plate and passes through the limiting plate; 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 color-developing 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 color-developing 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 pipe; 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 color-developing 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. Correspondingly, 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 color-developing 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 color-developing capsule according to claim 2 or 5, characterized in that: A plurality of puncture needles are arranged on one side of the breaking piece facing the orifice plate.

9. The urinary catheter with a color-developing 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 color-developing 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 configured to allow liquid to flow from the accommodating chamber into the liquid injection pipe.

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