Anti-extravasation urinary catheter for pediatric urology

Abstract

The present application relates to the field of urinary catheterization device, in particular to a fall-preventing urinary catheterization device for pediatric urology. The device comprises a connector, a connecting head fixedly connected to the connector, a vacuum pump detachably and sealingly connected to one end of the connector, a blocking valve arranged on the connector between the vacuum pump and the connecting head, and a catheter with one end detachably and sealingly connected to the other end of the connector and the other end fixedly connected to a housing. A float is slidingly arranged on the end of the housing away from the catheter, and a plurality of urine discharge holes are evenly arranged on the circumference of the end of the housing away from the catheter. The float can seal and block the urine discharge holes when in contact with the housing. The vacuum pump can create a vacuum in the catheter before the catheter is inserted, so that the catheter can be reduced in diameter, which facilitates the insertion of the catheter and reduces the pain of the patient during the insertion of the catheter, and prevents the catheter from causing damage to the urethral mucosa.

Description

Technical Field

[0001] This invention relates to the field of urinary catheterization devices, and more specifically to an anti-dislodgement urinary catheterization device for pediatric urology. Background Technology

[0002] A urinary catheter is a commonly used clinical tube inserted through the urethra into the bladder to drain urine. It is usually made of natural rubber, silicone rubber, or polyvinyl chloride. When in use, the end of the catheter that is outside the body is connected to a urine bag to collect urine.

[0003] The insertion of a urinary catheter can cause significant pain for the child. When the outer wall of the catheter is inserted into the urethra, the friction between the outer wall of the catheter and the inner wall of the urethra is high, which can easily damage the urethral mucosa, causing edema and infection. Summary of the Invention

[0004] The technical problem this invention aims to solve is a pediatric urology catheterization device that reduces the diameter of the catheter during insertion, thereby decreasing friction between the catheter and the urethra and preventing damage to the urethral mucosa during catheterization. This device also features automatic catheter retraction after insertion and excellent anti-dislodgement properties.

[0005] To achieve the above objectives, the technical solution provided by this invention is as follows:

[0006] A pediatric urological anti-dislodgement catheterization device includes a connector with a fixed connection to it. A vacuum pump is detachably and securely connected to one end of the connector. A blocking valve is installed on the connector between the vacuum pump and the connection. The other end of the connector is detachably and securely connected to one end of the catheter. A housing is fixedly connected to the other end of the catheter. A float is slidably mounted on the end of the housing away from the catheter. Multiple urination holes are evenly distributed around the circumference of the end of the housing away from the catheter. When the float contacts the housing, it can seal the multiple urination holes. The catheter is made of elastic rubber material and is formed by a first thin wall, a third thick wall, a second thin wall, a first thick wall, a third thin wall, and a second thick wall. The third thin wall and the third thick wall are positioned opposite each other. The first thin wall and the second thin wall, as well as the first thick wall and the second thick wall, are symmetrically positioned along the centerline of the third thin wall. The lengths of the first thin wall and the second thin wall are equal and greater than the length of the third thin wall. The lengths of the first thick wall and the second thick wall are equal and greater than the length of the third thick wall.

[0007] Specifically, an elastic sleeve is fixed to the outside of the shell, and multiple long grooves are evenly distributed around the circumference of the shell sidewall inside the elastic sleeve. A rotating plate is elastically rotatably connected to each long groove, and one end of the rotating plate is tightly pressed against the elastic sleeve, causing the elastic sleeve to bulge outward from the shell.

[0008] Specifically, both ends of the elastic sleeve are fixedly and sealed to the housing.

[0009] Specifically, one end of the rotating plate is rotatably connected to the housing via a rotating shaft, and a torsion spring is sleeved on the rotating shaft. One end of the torsion spring is fixedly connected to the housing, and the other end of the torsion spring is fixedly connected to the rotating plate.

[0010] Specifically, the blocking valve includes a sleeve, a connector passing through the sleeve, a through hole on the sleeve communicating with the connector, and a screw threadedly connected to the sleeve. After the screw seals and plugs the through hole, the vacuum pump is not connected to the catheter.

[0011] Specifically, the other end of the connector is fixedly and sealed with a threaded sleeve, and one end of the catheter is threadedly and sealed to the threaded sleeve.

[0012] Specifically, a circular hole is provided at the center of the end of the shell away from the catheter, a limiting rod passes through the circular hole, the limiting rod is slidably and sealed to the shell, a retaining ring is fixed to one end of the limiting rod inside the shell, and a float is fixedly connected to one end of the limiting rod outside the shell.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. Before inserting a urinary catheter, a vacuum pump can create a vacuum inside the catheter, reducing its diameter. This makes insertion easier and reduces patient discomfort, while also preventing damage to the urethral mucosa.

[0015] 2. The increased rigidity of the catheter after its diameter reduction makes it easier to insert, thus improving the efficiency of catheter insertion.

[0016] 3. When vacuuming the catheter, the elastic sleeve contracts, causing the rotating plate to screw into the long groove, making catheter insertion easier. Once the shell is inside the patient's bladder, the internal pressure of the catheter returns to normal. Then, under the force of the torsion spring, one end of the rotating plate presses tightly against the elastic sleeve, causing the elastic sleeve to bulge outward from the shell, preventing the catheter from dislodging from the urethra. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the device.

[0018] Figure 2 This is a schematic diagram of the casing.

[0019] Figure 3 This is a schematic diagram of the separate structure of the float and the shell.

[0020] Figure 4 This is a cross-sectional view of the shell.

[0021] Figure 5 for Figure 4 A magnified view of region A in the middle.

[0022] Figure 6 This is a cross-sectional view of the connector.

[0023] Figure 7 This is a schematic diagram of the cross-sectional structure of a urinary catheter.

[0024] The components in the attached diagram are named as follows: 1. Connector; 2. Vacuum pump; 3. Connector head; 4. Sleeve; 5. Screw; 6. Threaded sleeve; 7. Catheter; 701. First thin-walled section; 702. Second thin-walled section; 703. Third thin-walled section; 704. First thick-walled section; 705. Second thick-walled section; 706. Third thick-walled section; 8. Housing; 9. Elastic sleeve; 10. Long groove; 11. Rotating shaft; 12. Rotating plate; 13. Drainage hole; 14. Round hole; 15. Limiting rod; 16. Float. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0026] like Figures 1-7 As shown, a pediatric urological catheterization device for preventing dislodgement includes a connector 1, a connecting head 3 fixedly connected to the connector 1, a vacuum pump 2 detachably and securely connected to one end of the connector 1, a blocking valve on the connector 1 between the vacuum pump 2 and the connecting head 3, and a detachably and securely connected, sealed connection between the other end of the connector 1 and one end of the catheter 7. Specifically, a threaded sleeve 6 is fixedly and securely connected to the other end of the connector 1, and one end of the catheter 7 is threadedly and securely connected to the threaded sleeve 6.

[0027] The blocking valve includes a sleeve 4, which passes through a connector 1. A through hole communicating with the connector 1 is provided on the sleeve 4. A screw 5 is connected to the sleeve 4 by an internal thread. After the screw 5 seals and blocks the through hole, the vacuum pump 2 is not connected to the catheter 7.

[0028] The other end of the catheter 7 is fixedly connected to the housing 8, and a float 16 is slidably disposed at the end of the housing 8 away from the catheter 7. Specifically, a circular hole 14 is opened at the center of the end of the housing 8 away from the catheter 7, and a limiting rod 15 passes through the circular hole 14. The limiting rod 15 is slidably and sealingly connected to the housing 8. A retaining ring is fixed at one end of the limiting rod 15 inside the housing 8, and the float 16 is fixedly connected to one end of the limiting rod 15 outside the housing 8.

[0029] Multiple urination holes 13 are evenly distributed around the end of the housing 8 away from the catheter 7. When the float 16 contacts the housing 8, it can seal and block the multiple urination holes 13.

[0030] An elastic sleeve 9 is fixed to the outer side of the housing 8. Specifically, both ends of the elastic sleeve 9 are fixedly and sealed to the housing 8. Multiple elongated grooves 10 are evenly distributed around the circumference of the side wall of the housing 8 inside the elastic sleeve 9, and rotating plates 12 are elastically rotatably connected to each groove 10. Specifically, one end of the rotating plate 12 is rotatably connected to the housing 8 via a rotating shaft 11. A torsion spring is sleeved on the rotating shaft 11, with one end of the torsion spring fixedly connected to the housing 8 and the other end fixedly connected to the rotating plate 12. One end of the rotating plate 12 presses tightly against the elastic sleeve 9, causing a portion of the elastic sleeve 9 to bulge outwards from the housing 8.

[0031] like Figure 7 As shown, the urinary catheter 7 is made of elastic rubber material. The urinary catheter 7 is formed by a first thin-walled tube 701, a third thick-walled tube 706, a second thin-walled tube 702, a first thick-walled tube 704, a third thin-walled tube 703, and a second thick-walled tube 705. The third thin-walled tube 703 and the third thick-walled tube 706 are positioned opposite each other. The first thin-walled tube 701 and the second thin-walled tube 702, as well as the first thick-walled tube 704 and the second thick-walled tube 705, are symmetrically arranged along the midline of the third thin-walled tube 703. The lengths of the first thin-walled tube 701 and the second thin-walled tube 702 are equal and greater than the length of the third thin-walled tube 703. The lengths of the first thick-walled tube 704 and the second thick-walled tube 705 are equal and greater than the length of the third thick-walled tube 706.

[0032] Before inserting the catheter 7, seal the connector 3. Rotate the screw 5 to misalign it with the perforation of the sleeve 4. At this time, the connector 1 connects the catheter 7 and the vacuum pump 2. Start the vacuum pump 2 to extract the air from the catheter 7. When the vacuum pump 2 extracts the air from the catheter 7, the float 16 contacts the housing 8 and seals the urination hole 13. When the air in the catheter 7 is extracted, the first thin wall 701, the second thin wall 702, and the third thick wall 706 move towards the center of the catheter 7. At the same time, the third thin wall 703 bends, and the first thick wall 704 and the second thick wall 705 move closer to each other.

[0033] When the vacuum pump 2 evacuates the catheter 7, the elastic sleeve 9 contracts and causes the rotating plate 12 to rotate into the long groove 10. When the catheter 7 is inserted, the elastic sleeve 9 that protrudes outward from the shell 8 prevents the shell 8 from moving inside the urethra.

[0034] After the vacuum pump 2 evacuates the catheter 7, the diameter of the catheter 7 decreases, which helps prevent damage to the urethral mucosa during catheter insertion. After the vacuum pump 2 evacuates the catheter 7, the first thin wall 701, the third thick wall 706, the second thin wall 702, the first thick wall 704, the third thin wall 703, and the second thick wall 705 of the catheter 7 move closer together, thus increasing the rigidity of the catheter 7 and facilitating its movement within the urethra during insertion.

[0035] After the housing 8 is inserted into the patient's bladder, the connector 3 is opened to allow outside air to enter the catheter 7. When the internal pressure of the catheter 7 returns to normal, the catheter 7 returns to its original position, and its outer wall compresses the urethra. At the same time, under the elastic force of the torsion spring, one end of the rotating plate 12 rotates outward from the housing 8. After the rotating plate 12 rotates, one end of the rotating plate 12 presses tightly against the elastic sleeve 9, causing part of the elastic sleeve 9 to bulge outward from the housing 8. The bulging part of the elastic sleeve 9 prevents the catheter 7 from falling out of the urethra.

[0036] When urine is produced in the patient's bladder, the urine causes the float 16 to move upward, thereby opening the urination port 13. The urine enters the catheter 7 through the urination port 13 and is discharged through the connector 3.

[0037] When it is necessary to remove the urinary catheter 7, the connector 1 connects to the vacuum pump 2, and the vacuum pump 2 is started to evacuate the urinary catheter 7. When the vacuum pump 2 evacuates the urinary catheter 7, the float 16 contacts the housing 8 and blocks the urination hole 13. After the diameter of the urinary catheter 7 is reduced, the rotating plate 12 is screwed into the long groove 10 as a whole, and then the urinary catheter 7 can be pulled out from the patient's urethra.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pediatric urological catheterization device for preventing dislodgement, comprising a connector (1), a connecting head (3) fixedly connected to the connector (1), and a vacuum pump (2) detachably and fixedly sealed to one end of the connector (1), characterized in that, A blocking valve is provided on the connector (1) between the vacuum pump (2) and the connector (3). The other end of the connector (1) is detachably and fixedly sealed to one end of the catheter (7). The other end of the catheter (7) is fixedly connected to the housing (8). A float (16) is slidably provided on the end of the housing (8) away from the catheter (7). Multiple urination holes (13) are evenly distributed around the end of the housing (8) away from the catheter (7). When the float (16) contacts the housing (8), it can seal and block the multiple urination holes (13). The catheter (7) is made of elastic rubber material. The catheter (7) is formed by the encirclement of the first thin wall (701), the third thick wall (706), the second thin wall (702), the first thick wall (704), the third thin wall (703), and the second thick wall (705). The first thin wall (701) and the second thin wall (702) and the first thick wall (704) and the second thick wall (705) are symmetrically arranged according to the center line of the third thin wall (703). The lengths of the first thin wall (701) and the second thin wall (702) are equal and greater than the length of the third thin wall (703). The lengths of the first thick wall (704) and the second thick wall (705) are equal and greater than the length of the third thick wall (706). An elastic sleeve (9) is fixed on the outside of the shell (8). Multiple long grooves (10) are evenly distributed on the circumference of the side wall of the shell (8) inside the elastic sleeve (9). A rotating plate (12) is elastically rotatably connected in each long groove (10). One end of the rotating plate (12) is tightly pressed against the elastic sleeve (9) and causes part of the elastic sleeve (9) to bulge outward from the shell (8).

2. The pediatric urological catheterization device for preventing dislodgement according to claim 1, characterized in that, Both ends of the elastic sleeve (9) are fixedly and sealed to the housing (8).

3. The pediatric urological catheterization device for preventing dislodgement according to claim 1, characterized in that, One end of the rotating plate (12) is rotatably connected to the housing (8) via a rotating shaft (11). A torsion spring is sleeved on the rotating shaft (11). One end of the torsion spring is fixedly connected to the housing (8), and the other end of the torsion spring is fixedly connected to the rotating plate (12).

4. The pediatric urological catheterization device for preventing dislodgement according to claim 1, characterized in that, The blocking valve includes a sleeve (4), which passes through the connector (1). The sleeve (4) has a through hole that communicates with the connector (1). The sleeve (4) has a threaded connection to a screw (5). After the screw (5) seals the through hole, the vacuum pump (2) is not connected to the catheter (7).

5. The pediatric urological catheterization device for preventing dislodgement according to claim 1, characterized in that, The other end of the connector (1) is fixedly and sealed with a threaded sleeve (6), and one end of the catheter (7) is threaded and sealed with the threaded sleeve (6).

6. The pediatric urological catheterization device for preventing dislodgement according to claim 1, characterized in that, The housing (8) has a circular hole (14) at the center of the end away from the catheter (7). The limiting rod (15) passes through the circular hole (14) and is slidably sealed to the housing (8). A retaining ring is fixed at one end of the limiting rod (15) inside the housing (8), and the float (16) is fixedly connected to one end of the limiting rod (15) outside the housing (8).

Images