Urethral catheter capable of flushing urethra

Abstract

The urethral catheter capable of flushing the urethra comprises a urethral catheter body, and a urine drainage opening and a water bag are arranged on the front portion of the urethral catheter body. The water bag is located below the urine drainage opening and fixed to the periphery of the catheter body in a surrounding mode. A urine drainage channel and a water bag channel are arranged in the catheter body. The upper end of the urine drainage channel is communicated with the urine drainage opening, and the lower end is provided with a urine collection bag connector; the upper end of the water bag channel is communicated with the water bag, and the lower end is provided with a water bag injection port; a one-way film valve film layer surrounding the catheter body is arranged on the portion, below the water bag, of the catheter body, and a plurality of drainage holes are evenly formed in the lower portion of the one-way film valve film layer in the radial direction. And a urethral irrigation diversion port communicated with the one-way film valve film layer and the urine drainage channel is formed in the position, corresponding to the upper part of the one-way film valve film layer, of the catheter body. The urethral drainage tube is convenient for drainage of urethral secretions of sick children after urethral repair / reconstruction operations such as hypospadias correction and the like, and reduces the risk of postoperative infection.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of catheter, especially to a catheter capable of flushing urethra. BACKGROUND

[0002] Urethral catheterization is a routine operation technique that medical staff must master, which refers to the process of inserting a catheter into the bladder through the urethral orifice to play a role in draining urine. The commonly used catheter in clinical practice mainly includes double-lumen catheter and triple-lumen catheter. The double-lumen catheter includes a main tube body, a fixed balloon water injection end and a urination end connected to the rear end of the main tube body, a urination hole on the front segment of the main tube body wall in communication with the urination end, and a bladder fixing balloon in communication with the fixed balloon water injection end. The triple-lumen catheter adds a bladder flushing end in communication with the urination hole to the rear end of the main tube body based on the double-lumen catheter.

[0003] Hypospadias is the most common congenital deformity of the urethra and external genitalia in male infants, which is hereditary and needs surgical correction. Otherwise, it will affect urination and future sexual function. Moreover, the surgery is preferably completed before school age. Currently, a suitable type of double-lumen catheter is indwelled in children after hypospadias repair and urethral reconstruction surgery to play a supporting role. Timely and effective cleaning of secretions in the urethra after surgery directly affects the occurrence of complications and the success rate of surgery.

[0004] Currently, some researchers have designed and applied triple-lumen catheters or four-lumen catheters with urethral drainage and flushing functions (CN113289215A, CN113499531A). However, the triple-lumen or four-lumen catheter has 3-4 channels. Due to production technology, the diameter of the producible catheter is relatively large. Currently, the circulating type is 14-26Fr (3Fr = 1mm). However, hypospadias repair and urethral reconstruction surgery is completed before school age. Generally, the indwelling catheter type is 6-10Fr. The above-mentioned catheter with flushing function by increasing the channel is not applicable. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of catheter capable of flushing urethra, it is convenient for the drainage of urethral secretion of child after hypospadias repair and urethral reconstruction surgery, reduce the risk of postoperative infection, improve the success rate of surgery.

[0006] A kind of catheter capable of flushing urethra, including catheter body, the front of the catheter body is equipped with urine drainage opening and water sac;The water sac is located below urine drainage opening, and is fixed around the periphery of the catheter body;The catheter body includes urine drainage channel and water sac channel;Wherein, the upper end of urine drainage channel is in communication with urine drainage opening, and the lower end is equipped with urine bag interface;The upper end of the water sac channel is in communication with water sac, and the lower end is equipped with water sac injection port;

[0007] The catheter body is provided with a one-way membrane valve membrane layer surrounding the catheter body below the water bag, and a plurality of drainage holes are uniformly arranged in the lower part of the one-way membrane valve membrane layer in the radial direction.

[0008] In the utility model, the material of the one-way membrane valve membrane layer is silica gel, the silica gel material has small irritation and damage to urethral mucosa, effectively reduces urine crystallization and secretion adhesion, and is not easy to block.

[0009] The working principle of the one-way membrane valve membrane layer is as follows: when the distal end urine collection bag is in an open state, due to the negative pressure of the urine collection bag, urine enters the urine bag through the urine drainage channel; in the case that the distal end urine collection bag is clamped, the pores (i.e. drainage holes) of the membrane layer are in communication with the atmosphere, urine enters the membrane layer through the urethral flushing shunt, and is discharged to the urethral gap through the pores, thereby playing a flushing and drainage role.

[0010] Further, the front end of the catheter body is provided with a catheter head.

[0011] Preferably, the outer diameter of the catheter body is 6-10 Fr (2-3.3 mm), the diameter of the urine drainage channel is 1-2 mm, the diameter of the water bag channel is 0.7-0.9 mm, and further preferably 0.8 mm.

[0012] Preferably, the number of drainage holes is 6-10, and the diameter of each drainage hole is 0.3-0.4 mm, and further preferably 0.33 mm.

[0013] Preferably, the diameter of the urethral flushing shunt is 1-2 mm.

[0014] Preferably, the axial length of the one-way membrane valve membrane layer is 0.8-1.2 mm, and further preferably 1 mm.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] Compared with the three-lumen catheter with urethral drainage function, the utility model skillfully reduces the channel by arranging the one-way membrane valve membrane layer below the water bag, arranging the drainage holes in the lower part of the one-way membrane valve membrane layer, and arranging the urethral flushing shunt in the catheter body, which is more suitable for preschool children. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the catheter for flushing urethra according to the utility model;

[0018] Figure 2 For Figure 1 A-A in the sectional view;

[0019] Figure 3 For Figure 1 B-B in the sectional view.

[0020] In the figure: 1-catheter head, 2-urine drainage opening, 3-bladder neck, 4-water bag opening, 5-water bag, 6-bladder neck sphincter, 7-urine drainage channel, 8-water bag channel, 9-urethral irrigation shunt, 10-one-way diaphragm valve diaphragm layer, 11-drainage hole, 12-urine collection bag interface, 13-water bag injection port. DETAILED DESCRIPTION

[0021] The utility model will be described in further detail below in combination with the drawings and examples, and it should be pointed out that the following examples are intended to facilitate the understanding of the utility model and do not limit it in any way.

[0022] As Figures 1 to 3 shown, a catheter for flushing urethra, comprising a catheter body, the front of the catheter body is provided with a urine drainage opening 2 and a water bag 5; the water bag 5 is located below the urine drainage opening 2 and is fixed around the periphery of the catheter body. The front end of the catheter body is provided with a catheter head 1. The catheter head 1 is slightly tough and has a larger density, which facilitates catheterization and X-ray visualization.

[0023] The catheter body contains a urine drainage channel 7 and a water bag channel 8; wherein the upper end of the urine drainage channel 7 communicates with the urine drainage opening 2, and the lower end is provided with a urine collection bag interface 12. The urine in the bladder enters the urine drainage channel 7 through the urine drainage opening 2, flows out of the urine collection bag interface 12 and enters the urine collection bag.

[0024] The upper end of the water bag channel 8 communicates with the water bag 5 through the water bag opening 4, and the lower end is provided with a water bag injection port 13. The syringe injects normal saline at the water bag injection port 13, fills the water bag 5 through the water bag channel 8 and the water bag opening 4 to fix the catheter on the bladder neck 3 of the bladder neck sphincter 6.

[0025] The catheter body is provided with a one-way diaphragm valve diaphragm layer 10 below the water bag 5, and the one-way diaphragm valve diaphragm layer 10 is arranged around the catheter body. The lower part of the one-way diaphragm valve diaphragm layer 10 is uniformly provided with a plurality of drainage holes 11 in the radial direction, and the catheter body is provided with a urethral irrigation shunt 9 corresponding to the upper part of the one-way diaphragm valve diaphragm layer 10, which communicates the one-way diaphragm valve diaphragm layer 10 and the urine drainage channel 7.

[0026] In this embodiment, the outer diameter of the catheter body can be 6-10 Fr (2-3.3 mm), the diameter of the urine drainage channel 7 can be 1-2 mm, and the diameter of the water bag channel 8 can be 0.8 mm.

[0027] The axial length of the one-way film valve film layer 10 is 1 mm; the number of the drainage holes 11 is 8, and the aperture of each drainage hole 11 is 0.33 mm. The diameter of the urethral washing shunt 9 can be 1-2 mm.

[0028] In use, when the distal urine collection bag is in an open state, due to the negative pressure of the urine collection bag, urine passing through the urethral washing shunt 9 in the urine drainage channel 7 will directly enter the urine collection bag through the urine collection bag interface 12, and a small amount of urine will flow into the one-way film valve film layer 10 through the urethral washing shunt 9. Under the action of the one-way film valve structure, this small amount of urine will not wash the urethra through the drainage holes 11 due to the surface tension of the liquid. When the distal urine collection bag is clamped, the urine flows into the one-way film valve film layer 10 and the drainage holes 11 through the urethral washing shunt 9, and the film one-way valve has no pressure difference restriction, so that the urethral washing channel is open, the urine self-washes the urethra, and the incidence of postoperative urethral infection is reduced, and the success rate of the operation is improved.

[0029] Compared with the 6-10 Fr ordinary double-lumen urinary catheter commonly used after the current clinical hypospadias repair and other urethral repair / reconstruction surgery, the urethral secretions can be fully drained, the risk of postoperative infection is reduced, and the success rate of the operation is improved.

[0030] The above-described embodiments have described the technical solutions and beneficial effects of the utility model in detail, and it should be understood that the above-described only for the specific embodiments of the utility model, and is not used to limit the utility model, any modification, supplement and equivalent replacement made in the principle range of the utility model should be included in the protection range of the utility model.

Claims

1. A urinary catheter which is flushable urethra, comprising a urinary catheter body, characterized by, The front part of the catheter body is provided with a urine drainage opening (2) and a water bag (5); the water bag (5) is located below the urine drainage opening (2) and is fixed around the periphery of the catheter body; the catheter body contains a urine drainage channel (7) and a water bag channel (8) therein; wherein the upper end of the urine drainage channel (7) is in communication with the urine drainage opening (2), and the lower end is provided with a urine bag interface (12); the upper end of the water bag channel (8) is in communication with the water bag (5), and the lower end is provided with a water bag injection port (13); The catheter body is provided with a one-way membrane valve membrane layer (10) around the catheter body below the water bag (5), the lower part of the one-way membrane valve membrane layer (10) is uniformly provided with a plurality of drainage holes (11) in the radial direction, and the catheter body is provided with a urethral irrigation shunt (9) corresponding to the upper part of the one-way membrane valve membrane layer (10), which communicates the one-way membrane valve membrane layer (10) and the urine drainage channel (7).

2. The flushable urethral catheter according to claim 1, characterized in that, The front end of the catheter body is provided with a catheter head (1).

3. The flushable urethral catheter of claim 1, wherein, The outer diameter of the catheter body is 2-3.3mm, the diameter of the urine drainage channel (7) is 1-2mm, and the diameter of the water bag channel (8) is 0.7-0.9mm.

4. The flushable urethral catheter of claim 1, wherein, The number of drainage holes (11) is 6-10, and the diameter of each drainage hole (11) is 0.3-0.4mm.

5. The flushable urethral catheter of claim 1, wherein, The diameter of the urethral irrigation shunt (9) is 1-2mm.

6. The flushable urethral catheter of claim 1, wherein, The axial length of the one-way membrane valve membrane layer (10) is 0.8-1.2mm.

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