Medication-injection type urinary catheter

Abstract

The present invention relates to a drug solution injection type urination catheter, which includes a catheter body having a flexible hollow pipe shape, an expansion tube located near one end of the catheter body and spaced apart from the one end, a urination port connected to the other end of the catheter body for discharging urine from the body, an air injection port connected to the other end of the catheter body for injecting air into the expansion tube, and a drug solution injection port connected to the other end of the catheter body for injecting the drug solution, and when the hollow is viewed in cross section, a urination hole communicating with the urination port, a urination hole communicating with the air injection port, and a drug solution injection port connected to the other end of the catheter body for injecting the drug solution are provided. an air injection hole communicating with the drug solution injection port and a drug solution injection hole communicating with the drug solution injection port are arranged separately from each other, and a plurality of drug solution outlet ports are formed on the circumferential surface of the catheter body, which communicate with the drug solution injection hole and are arranged so as to be spaced apart along the direction in which the catheter body extends. Therefore, by applying the drug solution that has passed through the drug solution injection port and the drug solution injection hole via the drug solution outlet ports to the bladder or urethra, it is possible to perform the specified function, such as local anesthesia or bladder irrigation, uniformly in the longitudinal direction of the urethra, and has the advantages of being easy to insert into the urethra and significantly reducing the occurrence of pain.

Description

Technical Field

[0001] The present invention relates to a drug solution injection type urinary catheter, and more specifically, to a drug solution injection type urinary catheter configured to supply a drug solution to the urethra and the bladder, which can be easily inserted into the urethra and prevent the induction of pain.

Background Art

[0002] As shown in FIG. 1, urine discharged from the kidney is transported to the bladder through the ureter and discharged outside the body through the urethra. On the other hand, when it is difficult for a patient to spontaneously discharge urine, a flexible tube such as a catheter is inserted through the urethra to the bladder to discharge urine. At this time, when it is necessary to prevent bacterial contamination by the catheter or perform local anesthesia, an antibiotic or a local anesthetic is injected from the outside through the catheter and supplied to the bladder or the urethra.

[0003] A typical configuration of such a catheter is disclosed in [Prior Art Document 1], and will be schematically described as follows with reference to FIGS. 2a and 2b. As shown in the figure, the catheter of [Prior Art Document 1] includes an elongated tubular catheter body 401 having a distal end portion 402 and a proximal end portion 403, and a discharge lumen 404 extends from the distal end portion 402 to the proximal end portion 403 through a tube 414 in the catheter body 401. When the discharge lumen 404 communicates with an opening or an eyelet 405 in the catheter body 401 at the distal end portion 402 of the catheter body 401 and is used to discharge urine from the patient's bladder, urine can flow into the interior of the discharge lumen 404 through the eyelet 405. In addition, a sleeve portion 406 made of a semipermeable membrane is formed on the catheter body 401.

[0004] An instillation lumen 410 extends from the catheter body 401 at the proximal end portion 403. The injection lumen 410 is connected to the sleeve portion 406 using a tube 413 that extends along the longitudinal direction of the catheter body 401. The drug solution injected into the sleeve portion 406 via the tube 413 continuously cleanses the space around the urethra, preventing the formation of biological membranes and subsequent bacterial infections. In other words, the drug is supplied to the inner surface of the urethra via the sleeve portion 406, which is made of a semipermeable membrane, and exerts its medicinal effect.

[0005] The fluid may contain preservatives, antibiotics, or antimicrobial agents and / or combinations thereof to prevent bacterial infection of the urethra in contact with the catheter body. The expansion fluid passes through the expansion lumen 409 and the tube 412 inside the catheter body 401 in order to expand the tube section 408.

[0006] However, according to this [prior art document 1], since the sleeve portion 406 is attached to the catheter body 401, there is inevitably a discontinuity in terms of material and shape. This not only makes it difficult to insert the catheter into the urethra, but also causes pain due to friction during the insertion process, resulting in increased discomfort for the patient. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Published Patent Application No. 10-2019-0112010 [Overview of the project] [Problems that the invention aims to solve]

[0008] The present invention was devised to solve the problems of the prior art described above, and the object of the present invention is to provide a drug-injection type urinary catheter that can be easily inserted into the urethra and can significantly reduce the occurrence of pain. Furthermore, an object of the present invention is to provide a drug-injection type urinary catheter that can maximize the efficacy of the supplied drug solution. [Means for solving the problem]

[0009] To achieve the aforementioned objectives, the drug injection type urinary catheter according to the present invention is The catheter body consists of a flexible, hollow, pipe-shaped structure, An expansion tube is provided located near one end of the catheter body and spaced apart from that end, A urinary port for draining urine from the body is connected to the other end of the catheter body, An air injection port for injecting air into the expansion tube is connected to the other end of the catheter body, The catheter body is connected to the other end and includes a drug injection port for injecting the drug solution, When the hollow is viewed in cross-section, the urination port communicating with the urination port, the air injection port communicating with the air injection port, and the drug injection port communicating with the drug injection port are arranged in a manner that is separated from each other. The catheter body is characterized in that a plurality of drug outlets are formed on its circumferential surface, communicating with the drug injection hole and spaced apart along the direction in which the catheter body extends.

[0010] The ring-shaped drug solution dispersion grooves extending circumferentially to the catheter body are formed in multiple locations spaced apart from each other in the direction in which the catheter body extends, and the drug solution outlets are formed in each of the ring-shaped drug solution dispersion grooves.

[0011] Alternatively, the catheter body is characterized in that a spiral drug solution dispersion groove is formed in the direction in which the catheter body extends, extending spirally along the circumferential direction, and the drug solution outlets are formed in the spiral drug solution dispersion groove.

[0012] The drug solution outlet is formed spaced apart on a virtual line on the circumferential surface that is aligned with the cross-sectional center line of the catheter body, and when the catheter body is viewed in cross-section, the drug solution outlet is formed inclined with respect to the radial direction of the catheter body. The plurality of drug solution outlets are characterized in that they are formed along the longitudinal direction of the catheter body and are alternately inclined in both directions around the radial direction of the catheter body. The plurality of drug solution outlets are characterized by being arranged on a virtual spiral along the circumferential surface of the catheter body. When the catheter body is viewed in cross-section, the catheter body is, A first tube having a circular inner surface and an outer surface, A second pipe that forms an air injection hole by being raised in an arc shape on the inner circumferential surface of the first pipe, A liquid injection hole is formed by an arc-shaped protrusion on the inner circumferential surface of the first tube, and a third tube is spaced apart from the second tube in the circumferential direction. Includes, The first tube, which is formed outside the second and third tubes, is characterized by having a urinary vent inside. [Effects of the Invention]

[0013] According to the present invention with the configuration described above, the catheter body is made of a flexible, hollow pipe shape, and includes an expansion tube located near one end of the catheter body and spaced apart from that end, a urination port connected to the other end of the catheter body for draining urine from the body, an air injection port connected to the other end of the catheter body for injecting air into the expansion tube, and a drug solution injection port connected to the other end of the catheter body for injecting the drug solution, and when the hollow is viewed in cross-section, it includes a urination hole communicating with the urination port and a hollow hole communicating with the air injection port. The catheter is characterized in that the air injection port and the drug injection port, which communicate with the drug injection port, are arranged separately from each other, and a plurality of drug outlets are formed on the circumferential surface of the catheter body, which communicate with the drug injection port and are spaced apart along the direction in which the catheter body extends. Therefore, by applying the drug that has passed through the drug injection port and drug injection port to the bladder or urethra through the drug outlets, it is possible to uniformly perform predetermined functions such as local anesthesia and bladder irrigation in the longitudinal direction of the urethra, and it has the advantage of being easily inserted into the urethra and significantly reducing the occurrence of pain.

[0014] Furthermore, according to the present invention, when the catheter body is viewed in cross-section, the catheter body includes a first tube having a circular inner and outer surface, a second tube that forms an air injection hole by being raised in an arc shape on the inner surface of the first tube, and a third tube that forms a drug injection hole by being raised in an arc shape on the inner surface of the first tube and is spaced apart from the second tube in the circumferential direction. Therefore, even if the catheter body is bent arbitrarily, it is possible to prevent occlusion of the hollow and local pain due to discontinuous bending of the catheter body, thereby increasing durability.

[0015] Further, according to the present invention, a plurality of ring-shaped chemical solution dispersion grooves extending in the circumferential direction of the catheter body are formed so as to be spaced apart from each other in the direction in which the catheter body extends. The chemical solution discharge ports are respectively formed in the respective ring-shaped chemical solution dispersion grooves, and the chemical solution discharged through the chemical solution discharge ports moves along the ring-shaped chemical solution dispersion groove, that is, along the circumferential direction of the catheter body, and is uniformly applied to the inner circumferential surface of the urethra. Therefore, the medicinal effect can appear uniformly and rapidly.

[0016] Further, according to the present invention, a spiral chemical solution dispersion groove extending spirally along the circumferential direction of the catheter body is formed in the direction in which the catheter body extends. The chemical solution discharge ports are respectively formed in the spiral chemical solution dispersion groove, and the chemical solution discharged through the chemical solution discharge ports moves along the spiral chemical solution dispersion groove, that is, along the circumferential direction of the catheter body, and is uniformly applied to the inner circumferential surface of the urethra. Therefore, the medicinal effect can appear uniformly and rapidly.

[0017] Further, according to the present invention, the chemical solution discharge ports are formed separately on a virtual line on the circumferential surface parallel to the cross-sectional center line of the catheter body. When the catheter body is viewed from the cross-section, the chemical solution discharge ports are formed inclined with respect to the radial direction of the catheter body, and the chemical solution discharged through the chemical solution discharge ports moves along the chemical solution dispersion groove at a faster speed. Therefore, the medicinal effect can be quickly transmitted to the urethra.

[0018] Further, according to the present invention, the plurality of chemical solution discharge ports are formed to be alternately inclined in both directions around the radial direction of the catheter body along the longitudinal direction of the catheter body. Even when the chemical solution cannot move well in one circumferential direction due to special conditions inside the urethra, the chemical solution can be normally applied.

[0019] Furthermore, according to the present invention, since the multiple drug solution outlets are arranged on a virtual spiral along the circumferential surface of the catheter body, when viewed from a cross-section of the catheter body, the positions of the drug solution outlets that strongly discharge the drug solution are dispersed in the circumferential direction of the catheter body, thereby enabling more uniform application of the drug solution in the circumferential direction of the catheter body. [Brief explanation of the drawing]

[0020] [Figure 1] Figure 1 shows the urinary structure of the body. [Figure 2] Figures 2a and 2b show the structure of a conventional urinary catheter. [Figure 3] Figure 3 is a perspective view showing a first embodiment of the drug injection type urinary catheter according to the present invention. [Figure 4] Figure 4 is a plan view showing a first embodiment of the drug injection type urinary catheter according to the present invention. [Figure 5] Figure 5 is a front view showing a first embodiment of the drug injection type urinary catheter according to the present invention. [Figure 6] Figure 6 is a cross-sectional view showing one embodiment of the catheter body in the first embodiment of the drug injection type urinary catheter according to the present invention. [Figure 7] Figure 7 is a cross-sectional view showing another embodiment of the catheter body in the first embodiment of the drug injection type urinary catheter according to the present invention. [Figure 8] Figure 8 is a perspective view showing a second embodiment of the drug injection type urinary catheter according to the present invention. [Figure 9] Figure 9 is a perspective view showing a third embodiment of the drug injection type urinary catheter according to the present invention. [Figure 10] Figure 10 is a perspective view showing a fourth embodiment of the drug injection type urinary catheter according to the present invention. [Figure 11] Figure 11 is a diagram showing the usage state of a drug-injection type urinary catheter according to the present invention. [Modes for carrying out the invention]

[0021] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. As shown in Figures 3 to 5, the drug injection type urinary catheter 1000 according to the present invention is for passing through the patient's urethra to the bladder to perform involuntary urination, and includes a flexible, hollow 110 pipe-shaped catheter body 100, an expansion tube 200 located near one end of the catheter body 100 and spaced apart from that end, a urination port 300 connected to the other end of the catheter body 100 for draining urine from the body, an air injection port 400 connected to the other end of the catheter body 100 for injecting air into the expansion tube 200, and a drug injection port 500 connected to the other end of the catheter body 100 for injecting the drug solution. This allows the drug-injection type urinary catheter 1000 to be easily inserted into the urethra, significantly reducing the pain experienced during insertion.

[0022] The urination port 300 is a component for draining urine from the bladder, the air injection port 400 is a component for preventing the urination catheter 1000 from easily falling out by injecting air into the expansion tube 200 to inflate it, and the drug injection port 500 is a component for injecting drug solutions such as local anesthetics or bladder irrigation agents into the bladder and / or urethra.

[0023] As shown in Figure 6, when the hollow 110 is viewed in cross-section, the hollow 110 is composed of a urination hole 111 communicating with the urination port 300, an air injection hole 112 communicating with the air injection port 400, and a drug injection hole 113 communicating with the drug injection port 500, with the urination hole 111, the air injection hole 112, and the drug injection hole 113 being arranged separately from each other. To do so, when the catheter body 100 is viewed in cross-section, the catheter body 100 includes a first tube 114 having a circular inner and outer surface, a second tube 115 that rises in an arc shape on the inner surface of the first tube 114 to form the air injection hole 112, and a third tube 116 that rises in an arc shape on the inner surface of the first tube 114 to form the drug solution injection hole 113 and is spaced apart from the second tube 115 in the circumferential direction, and the inside of the first tube 114 formed outside the second tube 115 and the third tube 116 can be used to form the urination hole 111. With this configuration, even if the catheter body 100 is bent arbitrarily, the fluid can be separated and flow through the urination hole 111, air injection hole 112, and drug injection hole 113, and the second tube 115 and third tube 116 function as reinforcing ribs, maintaining structural strength and durability. In other words, it is possible to prevent occlusion of the hollow 110 and local pain caused by discontinuous bending of the catheter body 100, thereby increasing durability.

[0024] Multiple drug outlets 120 are formed on the circumferential surface of the catheter body 100, communicating with the drug injection hole 113 and spaced apart along the direction in which the catheter body 100 extends. By applying the drug solution that has passed through the drug injection port 500 and the drug injection hole 113 to the bladder or urethra via the drug outlets 120, predetermined functions such as local anesthesia and bladder irrigation can be performed.

[0025] In the diagram, the drug injection port 113 is configured to include a first drug injection port 113a through which a local anesthetic flows and a second drug injection port 113b through which a bladder irrigation agent flows. Furthermore, the third tube 116 is composed of a third-first tube 116a and a third-second tube 116b that form the first chemical injection hole 113a.

[0026] In connection with this, as shown in Figures 3 to 5, the drug injection port 500 includes a first drug injection port 500a to which a local anesthetic is supplied and a second drug injection port 500b to which a bladder irrigation agent is supplied. However, the number of drug solution injection holes 113 and drug solution injection ports 500 can be one or more. On the other hand, multiple ring-shaped drug solution dispersion grooves 130 extending in the circumferential direction of the catheter body 100 are formed so as to be spaced apart from each other in the direction in which the catheter body 100 extends, and the drug solution outlets 120 can be formed in each of the ring-shaped drug solution dispersion grooves 130. In this case, it is preferable to arrange only one chemical outlet 120 for each ring-shaped chemical dispersion groove 130, thereby increasing the flow velocity and inducing rapid diffusion of the discharged chemical. As a result, the drug solution discharged through the drug solution outlet 120 moves along the ring-shaped drug solution dispersion groove 130, that is, along the circumferential direction of the catheter body 100, and is uniformly applied to the inner surface of the urethra, thereby enabling the drug effect to appear uniformly and quickly.

[0027] As shown in Figure 11, the drug solution outlets 120 are positioned on both sides of the expansion tube 200, allowing the drug solution to be supplied not only to the urethra but also to the bladder. The aforementioned chemical solution outlet 120 is formed in the chemical solution dispersion groove 130, and its relative diameter is shown separately. Reference numeral 900 denotes a chemical supply tank for supplying chemical solution to the chemical solution injection port 500.

[0028] In another embodiment, as shown in Figures 9 and 10, a spiral drug solution dispersion groove 140 extending spirally along the circumferential direction of the catheter body 100 is formed in the direction in which the catheter body 100 extends, and the drug solution outlet 120 can be formed in the spiral drug solution dispersion groove 140. In this case, it is preferable to arrange only one chemical outlet 120 for each spiral chemical dispersion groove 140 that completes one rotation, thereby promoting the rapid diffusion of the discharged chemical. As a result, the drug solution discharged through the drug solution outlet 120 moves along the spiral drug solution dispersion groove 130, that is, along the circumferential direction of the catheter body 100, and is uniformly applied to the inner surface of the urethra, thereby enabling the drug effect to appear uniformly and quickly. Furthermore, as shown in Figures 3 and 9, the drug solution outlet 120 is formed spaced apart on a virtual line on the circumferential surface that aligns with the cross-sectional centerline of the catheter body 100, and when the catheter body 100 is viewed in cross-section, the drug solution outlet 120 can be formed inclined with respect to the radial direction of the catheter body 100. With this configuration, the drug solution discharged through the drug solution outlet 120 moves along the drug solution dispersion grooves 130 and 140 at an even faster speed, thus enabling the drug's effects to be quickly transmitted to the urethra.

[0029] Furthermore, as shown in Figure 7, the multiple drug solution outlets 120 are formed along the longitudinal direction of the catheter body 100, alternately inclined in both directions with respect to the radial direction of the catheter body 100. If the drug solution cannot move properly in one circumferential direction due to specific conditions inside the urethra, it can move in the opposite direction to enable normal application of the drug solution.

[0030] On the other hand, as shown in Figures 8 and 10, the multiple drug solution outlets 120 can also be arranged on a virtual spiral along the circumferential surface of the catheter body 100. As a result, when viewed from a cross-section of the catheter body 100, the positions of the drug solution outlets 120, where the drug solution is strongly discharged, are dispersed in the circumferential direction of the catheter body 100, thus enabling more uniform application of the drug solution in the circumferential direction of the catheter body 100. In this case, as shown in Figure 10, if a spiral drug solution dispersion groove 140 is formed that extends spirally along the circumferential direction of the catheter body 100, the drug solution outlet 120 can be positioned on the spiral.

[0031] On the other hand, as shown in Figure 11, it is preferable to configure the cross-sectional area or diameter of the drug solution outlet 120 to gradually increase from the other end of the catheter body 100 toward the expansion tube 200, in order to prevent a decrease in the amount of spray due to pressure loss during the flow of the drug solution. For example, the diameter of the chemical outlet 120 can be set to increase continuously from 0.01 mm to 0.1 mm, and it is permissible for two or more to have the same diameter. The diameter of the drug outlet 120 facing the bladder can be maintained at the same diameter as the drug outlet 120 closest to the expansion tube 200 on the urethral side.

[0032] In Figure 5, the undescribed component reference numeral 181 is a first through-hole formed in the catheter body 100 and communicating with the urination hole 111, 182 is a second through-hole formed in the catheter body 100 and communicating with the air injection hole 112, and 183 is a third through-hole formed in the catheter body 100 and communicating with the second drug injection hole 113b. The first through-hole 181 allows urine to be discharged from the bladder to the outside, the second through-hole 182 supplies air to the expansion tube 200, and the third through-hole 183 supplies a medicinal solution such as a bladder irrigation agent into the bladder.

[0033] The present invention described above is not limited to the embodiments and accompanying drawings described above, and it will be apparent to those with ordinary skill in the art to which the present invention pertains that various substitutions, modifications, and changes are possible without departing from the technical spirit of the present invention.

Claims

1. In a drug-injection type urinary catheter, The catheter body consists of a flexible, hollow, pipe-shaped structure, An expansion tube is provided located near one end of the catheter body and spaced apart from that end, A urinary port for draining urine from the body is connected to the other end of the catheter body, An air injection port is connected to the other end of the catheter body for injecting air into the expansion tube, The catheter body is connected to the other end and includes a drug injection port for injecting the drug solution, When the hollow is viewed in cross-section, the urination port communicating with the urination port, the air injection port communicating with the air injection port, and the drug injection port communicating with the drug injection port are arranged in a manner that is separated from each other. Multiple drug outlets are formed on the circumferential surface of the catheter body, communicating with the drug injection hole and spaced apart along the direction in which the catheter body extends. With respect to the expansion tube, a drug solution dispersion groove is formed, which includes at least one first groove formed on one side of the catheter body and at least one second groove formed on the other side of the catheter body. A drug injection type urinary catheter characterized in that the plurality of drug outlets include at least one first outlet formed in at least one first groove and at least one second outlet formed in at least one second groove.

2. The drug solution dispersion groove includes a plurality of ring-shaped drug solution dispersion grooves, the ring-shaped drug solution dispersion grooves extending in the circumferential direction of the catheter body are formed to be spaced apart from each other in the direction in which the catheter body extends, and the drug solution outlet is formed in each of the ring-shaped drug solution dispersion grooves, as described in Claim 1.

3. The drug solution dispersion groove includes a spiral drug solution dispersion groove, and the spiral drug solution dispersion groove extending spirally along the circumferential direction of the catheter body is formed in the direction in which the catheter body extends, and the drug solution outlets are each formed in the spiral drug solution dispersion groove, as described in Claim 1.

4. The drug solution outlet is formed spaced apart on a virtual line on the circumferential surface aligned with the cross-sectional center line of the catheter body, and when the catheter body is viewed in cross-section, the drug solution outlet is formed inclined with respect to the radial direction of the catheter body, as described in claim 2 or 3.

5. The drug injection type urinary catheter according to claim 4, characterized in that the plurality of drug outlets are formed along the longitudinal direction of the catheter body and are alternately inclined in both directions around the radial direction of the catheter body.

6. The drug injection type urinary catheter according to claim 2 or 3, characterized in that the plurality of drug outlets are arranged on a virtual spiral along the circumferential surface of the catheter body.

7. When the catheter body is viewed in cross-section, the catheter body is, A first tube having a circular inner surface and an outer surface, A second pipe that forms an air injection hole by being raised in an arc shape on the inner circumferential surface of the first pipe, A liquid injection hole is formed by an arc-shaped protrusion on the inner circumferential surface of the first tube, and a third tube is spaced apart from the second tube in the circumferential direction. Includes, A drug injection type urinary catheter according to claim 2 or 3, characterized in that the inside of the first tube formed outside the second tube and the third tube forms a urinary drainage opening.

Images