Painless insertion catheter

Abstract

A painless insertion catheter comprises a urethral dilatation flushing fluid conveying channel (2) arranged in parallel with a urine drainage tube (1), and a urethral dilatation flushing fluid outlet (3) of the urethral dilatation flushing fluid conveying channel (2) is located on the outer wall of the front portion of the urine drainage tube (1). Urethra dilatation flushing fluid (6) is conveyed into the human urethra (7) through the urethra dilatation flushing fluid conveying channel (2) and the urethra dilatation flushing fluid outlet (3), the urethra dilatation flushing fluid (6) forms a fluid isolation layer between the inner surface of the human urethra (7) and the outer surface of the urine drainage tube (1), and the human urethra (7) is dilated. The painless insertion catheter can avoid severe pain generated when the catheter is inserted into the urethra of the human body and avoid urinary tract infection of a patient due to the fact that the catheter is inserted into the urethra of the human body.

Description

Technical Field

[0001] The invention relates to a painless insertion urinary catheter. Background Art

[0002] A catheter is a tube that is inserted into the bladder through the urethra to drain urine. The catheter can be inserted into the bladder through the urethra to drain the urine in the bladder out of the body. After the catheter is inserted into the bladder, in order to prevent it from falling out, an air bag will be set near the head of the catheter. This air bag can fix the catheter in the bladder so that the catheter cannot fall out of the urethra. The rear end of the catheter is connected to a urine bag for collecting urine.

[0003] In the medical field, indications for urinary catheters include:

[0004] 1. Patients with urinary retention or bladder outlet obstruction.

[0005] 2. Urinary incontinence.

[0006] 3. Accurately monitor urine volume.

[0007] 4. The patient is unable or unwilling to collect urine.

[0008] 5. Patients who need to stay in bed for a long time or are forced to stay in a certain position.

[0009] 6. For perioperative use during surgical operations.

[0010] Indwelling catheterization is a very important method of bladder urination in clinical practice. However, inserting a catheter into the human urethra will still cause unbearable pain to the patient, even if lubricating oil is added to the urethra. In addition, the urethra is easily injured during the insertion process, which will cause urinary tract infection in the patient. Summary of the invention

[0011] The purpose of the present invention is to provide a painless insertion catheter which can avoid severe pain when inserting a catheter into the human urethra and avoid urinary tract infection of the patient caused by urethral injury caused by the insertion of the catheter.

[0012] The painless insertion catheter of the present invention comprises a urine drainage tube, which is provided with a urine flow inlet and a urine flow outlet, and also comprises a urethral expansion flushing liquid delivery channel arranged in parallel with the urine drainage tube, wherein the urethral expansion flushing liquid outlet of the urethral expansion flushing liquid delivery channel is located on the outer wall of the front part of the urine drainage tube;

[0013] The urethral dilation flushing liquid is delivered to the human urethra through the urethral dilation flushing liquid delivery channel and the urethral dilation flushing liquid outlet, so that the urethral dilation flushing liquid forms a liquid isolation layer between the inner surface of the human urethra and the outer surface of the urine drainage tube, and expands the human urethra.

[0014] The painless insertion catheter of the present invention, wherein the liquid inlet of the urethra dilation and flushing liquid delivery channel is communicated with a urethra dilation and flushing liquid storage container, and the urethra dilation and flushing liquid storage container stores urethra dilation and flushing liquid for dilating and flushing the human urethra.

[0015] The painless insertion urinary catheter of the present invention, wherein the fluid delivery device is a metering pump or a liquid syringe or a flexible bag that can be crushed by hand.

[0016] The painless insertion catheter of the present invention, wherein the urine drainage tube is provided with a mesh urethral flushing liquid drainage groove on the outer side wall of the tube section located in the human urethra, and the cross section of the urethral flushing liquid drainage groove is semicircular, rectangular, trapezoidal or triangular.

[0017] The invention discloses a painless urinary catheter, wherein the urethral dilation fluid delivery channel is provided with a plurality of urethral flushing fluid discharge ports spaced apart on the side wall of the tube section of the urine drainage tube located in the human urethra.

[0018] An anti-dislodgement bag is arranged on the outside of the front end of the urine drainage tube, and the anti-dislodgement bag is connected to one port of the anti-dislodgement bag fluid delivery tube, and the other port of the anti-dislodgement bag fluid delivery tube is located outside the human urethra.

[0019] The urethra dilation flushing fluid is purified water, physiological saline, light saline, anti-inflammatory liquid or sterile water.

[0020] The painless insertion catheter of the present invention, wherein the urethral dilation fluid delivery channel comprises an infusion tube, the infusion tube penetrates from the urine drainage tube and communicates with each urethral flushing fluid outlet, and the other end of the infusion tube is connected to the urethral flushing fluid storage container.

[0021] The painless insertion catheter of the present invention, wherein the urine drainage tube comprises an outer sleeve made of a flexible film material, an inner tube is arranged inside the outer sleeve, the urethral dilation fluid delivery channel comprises an interlayer channel located between the outer sleeve and the inner tube, the interlayer channel between the outer sleeve and the inner tube is connected to one end of the fluid delivery tube, the other end of the fluid delivery tube is connected to a urethral dilation flushing fluid storage container, a plurality of urethral dilation flushing fluid outlets are arranged around the wall at the front end of the outer sleeve, the urethral dilation flushing fluid outlets can discharge or eject the urethral dilation flushing fluid forward and / or obliquely rearward and / or radially outward.

[0022] The painless insertion catheter of the present invention, wherein the urine flow inlet of the urine drainage tube is located on the front side wall of the outer sleeve, the urine flow inlet of the urine drainage tube radially passes through the inner tube, and the outer sleeve and the inner tube are made of silicone or latex or polyurethane PET or nylon.

[0023] The painless insertion catheter of the present invention comprises a urine drainage tube, which is provided with a urine flow inlet and a urine flow outlet, and also comprises a urethral expansion flushing liquid delivery channel arranged in parallel with the urine drainage tube, and the urethral expansion flushing liquid outlet of the urethral expansion flushing liquid delivery channel is located on the outer wall of the front part of the urine drainage tube; the urethral expansion flushing liquid is delivered to the human urethra through the urethral expansion flushing liquid delivery channel and the urethral expansion flushing liquid outlet, so that the urethral expansion flushing liquid forms a liquid isolation layer between the inner surface of the human urethra and the outer surface of the urine drainage tube, and the human urethra is expanded to avoid or reduce the outer surface of the urine drainage tube from contacting the inner surface of the human urethra, the urethral expansion flushing liquid flows between the human urethra and the outer wall of the urine drainage tube to flush the inner surface of the human urethra, and then flows out of the human urethra, and if necessary, drugs for preventing and treating urinary tract infections can be added to the urethral expansion flushing liquid. Therefore, the painless insertion catheter of the present invention can avoid the severe pain caused when inserting the catheter into the human urethra, and avoid urinary tract infection of the patient caused by urethral injury caused by the insertion of the catheter.

[0024] The painless urinary catheter of the present invention will be described in further detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A front cross-sectional view of a schematic structural diagram of an embodiment of the painless urinary catheter insertion of the present invention;

[0026] Figure 2 A front cross-sectional view of a structural schematic diagram of another embodiment of the painless urinary catheter insertion of the present invention;

[0027] Figure 3 This is a front cross-sectional view of a structural schematic diagram of yet another embodiment of the painless urinary catheter insertion of the present invention. DETAILED DESCRIPTION

[0028] See also Figure 1 , Figure 2 and Figure 3The painless insertion catheter of the present invention comprises a urine drainage tube 1, wherein the front end of the urine drainage tube 1 is provided with a urine flow inlet 10, the rear end of the urine drainage tube 1 is provided with a urine flow outlet, and further comprises a urethral expansion flushing liquid delivery channel 2 arranged in parallel with the urine drainage tube 1, the urethral expansion flushing liquid delivery channel 2 has a urethral expansion flushing liquid outlet 3 located on the outer wall of the front part of the urine drainage tube 1, the liquid inlet of the urethral expansion flushing liquid delivery channel 2 is communicated with a urethral expansion flushing liquid storage container 5, and the urethral expansion flushing liquid storage container 5 stores a urethral expansion flushing liquid 6 for expanding and flushing the human urethra 7, The urethral dilation flushing liquid 6 is transported into the human urethra 7 by the fluid transport device via the urethral dilation flushing liquid transport channel 2 and the urethral dilation flushing liquid outlet 3. The urethral dilation flushing liquid 6 entering the human urethra 7 forms a liquid isolation layer between the inner surface of the human urethra 7 and the outer surface of the urine drainage tube 1, and expands the human urethra 7 to avoid or reduce the contact between the outer surface of the urine drainage tube 1 and the inner surface of the human urethra 7. The urethral dilation flushing liquid 6 flows between the human urethra 7 and the outer wall of the urine drainage tube 1 to flush the inner surface of the human urethra 7, and then flows out of the human urethra 7.

[0029] As a further improvement of the present invention, the above-mentioned fluid delivery device is a metering pump 4 or a liquid syringe or a flexible bag that can be flattened by hand.

[0030] As a further improvement of the present invention, the urine drainage tube 1 is provided with a mesh urethral flushing liquid drainage groove on the outer wall of the tube section located in the human urethra, and the cross-section of the urethral flushing liquid drainage groove is semicircular, rectangular, trapezoidal or triangular.

[0031] As a further improvement of the present invention, the urethral dilation fluid delivery channel 2 is provided with a plurality of urethral flushing fluid outlets 11 at intervals on the side wall of the tube section of the urine drainage tube 1 located in the human urethra 7 .

[0032] The flushing of the human urethra can be performed intermittently or continuously through the multiple urethral flushing liquid discharge ports 11, and anti-inflammatory and bactericidal drugs can be added to the urethral dilation flushing liquid 6 as needed.

[0033] If necessary, the temperature of the urethra dilation flushing liquid 6 can be adjusted to make the temperature of the urethra dilation flushing liquid 6 close to the temperature of urine in the human body to avoid discomfort to the human body due to excessive temperature difference.

[0034] As a further improvement of the present invention, an anti-slip bag (not shown) is provided on the outside of the front end of the urine drainage tube 1, and the anti-slip bag is connected to one port of the anti-slip bag fluid delivery tube (not shown), and the other port of the anti-slip bag fluid delivery tube is located outside the human urethra 7. When in use, liquid or gas can be injected into the anti-slip bag through the anti-slip bag fluid delivery tube to make the anti-slip bag expand and become larger, and the expanded anti-slip bag can prevent the urine drainage tube 1 from falling out.

[0035] As a further improvement of the present invention, the urethra dilation flushing solution 6 is purified water, physiological saline, light saline, anti-inflammatory liquid or sterile water.

[0036] As a further improvement of the present invention, Figure 3 As shown, the urethral dilation fluid delivery channel 2 includes an infusion tube 8, which penetrates into the urine drainage tube 1 and connects to each urethral flushing fluid outlet 3, and the other end of the infusion tube 8 is connected to the urethral flushing fluid storage container 5.

[0037] As a further improvement of the present invention, see Figure 1 and Figure 2 The urine drainage tube 1 comprises an outer sleeve 12 made of a flexible film material, an inner tube 13 is arranged inside the outer sleeve 12, the urethral expansion liquid delivery channel 2 comprises an interlayer channel located between the outer sleeve 12 and the inner tube 13, the interlayer channel between the outer sleeve 12 and the inner tube 13 is connected to one end of a liquid delivery tube 14, the other end of the liquid delivery tube 14 is connected to a urethral expansion flushing liquid storage container 5, a plurality of urethral expansion flushing liquid outlets 3 are arranged around the wall of the front end of the outer sleeve 12, and the urethral expansion flushing liquid outlet 3 can be as follows Figure 1 As shown, the urethral expansion flushing liquid can be discharged or ejected forward and / or obliquely backward and / or radially outward, and the urethral expansion flushing liquid outlet 3 can also be as follows Figure 2 As shown, the urethral dilation irrigation fluid can be discharged or ejected in an oblique and backward direction.

[0038] During use, the outer tube 12 and the inner tube 13 can be kept in a contracted state at ordinary times, and only at a specific time point can the outer tube 12 and the inner tube 13 be expanded to allow urination. After the set time, the outer tube 12 and the inner tube 13 can be contracted and reduced again, thereby greatly reducing the strong discomfort caused by the expansion of the urinary tract due to the indwelling catheter, and avoiding urinary tract infection caused by friction of the urethra during use.

[0039] As a further improvement of the present invention, the urine flow inlet 10 of the urine drainage tube 1 is located on the front side wall of the outer sleeve 12, and the urine flow inlet 10 of the urine drainage tube 1 radially passes through the inner tube 13. The outer sleeve 12 and the inner tube 13 are made of silicone or latex or polyurethane PET or nylon.

[0040] The painless insertion catheter of the present invention comprises a urethral expansion and flushing liquid delivery channel 2 arranged in parallel with a urine drainage tube 1, a urethral expansion and flushing liquid outlet 3 of the urethral expansion and flushing liquid delivery channel 2 is located on the outer wall of the front part of the urine drainage tube 1, and the liquid inlet of the urethral expansion and flushing liquid delivery channel 2 is communicated with a urethral expansion and flushing liquid storage container 5, and the urethral expansion and flushing liquid storage container 5 stores a urethral expansion and flushing liquid 6 for expanding and flushing a human urethra 7, and the urethral expansion and flushing liquid 6 is delivered to the urethra through the urethral expansion and flushing liquid delivery channel 2 and the urethral expansion and flushing liquid outlet 3 through the fluid delivery device. The urethral expansion flushing liquid 6 enters the human urethra 7 and forms a liquid isolation layer between the inner surface of the human urethra 7 and the outer surface of the urine drainage tube 1, and expands the human urethra 7 to avoid or reduce the outer surface of the urine drainage tube 1 from contacting the inner surface of the human urethra 7. The urethral expansion flushing liquid 6 flows between the human urethra 7 and the outer wall of the urine drainage tube 1 to flush the inner surface of the human urethra 7, and then flows out of the human urethra 7. If necessary, drugs for preventing and treating urinary tract infections can be added to the urethral expansion flushing liquid 6. Therefore, the painless insertion catheter of the present invention can avoid the severe pain caused when inserting the catheter into the human urethra, and avoid urinary tract infections caused by urethral injuries caused by inserting the catheter.

Claims

1. A painless urinary catheter, comprising a urine drainage tube (1), the urine drainage tube (1) being provided with a urine inlet (10) and a urine outlet, characterized in that: It also includes a urethral dilation and flushing liquid delivery channel (2) arranged in parallel with the urine drainage tube (1), and a urethral dilation and flushing liquid outlet (3) of the urethral dilation and flushing liquid delivery channel (2) is located on the outer wall of the front part of the urine drainage tube (1); The urethral dilation and flushing liquid (6) is delivered to the human urethra (7) via the urethral dilation and flushing liquid delivery channel (2) and the urethral dilation and flushing liquid outlet (3), so that the urethral dilation and flushing liquid (6) forms a liquid isolation layer between the inner surface of the human urethra (7) and the outer surface of the urine drainage tube (1), thereby expanding the human urethra (7).

2. The painless urinary catheter according to claim 1, characterized in that The liquid inlet of the urethra dilation and flushing liquid delivery channel (2) is communicated with a urethra dilation and flushing liquid storage container (5), and the urethra dilation and flushing liquid storage container (5) stores urethra dilation and flushing liquid (6) for dilating and flushing the human urethra (7).

3. The painless urinary catheter according to claim 2, characterized in that The fluid delivery device is a metering pump (4) or a liquid syringe or a flexible bag that can be crushed by hand.

4. The painless urinary catheter according to claim 3, characterized in that: The urine drainage tube (1) is provided with a mesh urethral flushing liquid drainage groove on the outer side wall of the tube section located in the human urethra, and the cross section of the urethral flushing liquid drainage groove is semicircular, rectangular, trapezoidal or triangular.

5. The painless urinary catheter according to claim 4, characterized in that: The urethral dilation fluid delivery channel (2) is provided with a plurality of urethral flushing fluid discharge outlets (11) at intervals on the side wall of the tube section of the urine drainage tube (1) located in the human urethra (7).

6. The painless urinary catheter according to claim 5, characterized in that: An anti-dislodgement bag is provided on the outside of the front end of the urine drainage tube (1), and the anti-dislodgement bag is connected to one end of the anti-dislodgement bag fluid delivery tube, and the other end of the anti-dislodgement bag fluid delivery tube is located outside the human urethra (7).

7. The painless urinary catheter according to claim 6, characterized in that: The urethra dilation flushing solution (6) is purified water, physiological saline, light saline, anti-inflammatory liquid or sterile water.

8. The painless urinary catheter according to any one of claims 1 to 7, characterized in that: The urethral dilation fluid delivery channel (2) comprises an infusion tube (8), which penetrates into the urine drainage tube (1) and is connected to each urethral flushing fluid outlet (3), and the other end of the infusion tube (8) is connected to the urethral flushing fluid storage container (5).

9. The painless urinary catheter according to any one of claims 1 to 7, characterized in that: The urine drainage tube (1) comprises an outer sleeve (12) made of a flexible film material, an inner tube (13) is arranged inside the outer sleeve (12), the urethral dilation fluid delivery channel (2) comprises an interlayer channel located between the outer sleeve (12) and the inner tube (13), the interlayer channel between the outer sleeve (12) and the inner tube (13) is connected to one end of a fluid delivery tube (14), the other end of the fluid delivery tube (14) is connected to a urethral dilation flushing fluid storage container (5), a plurality of urethral dilation flushing fluid outlets (3) are arranged around the wall at the front end of the outer sleeve (12), and the urethral dilation flushing fluid outlets (3) are capable of discharging or ejecting urethral dilation flushing fluid forward and / or obliquely backward and / or radially outward.

10. The painless urinary catheter according to any one of claims 1 to 7, characterized in that: The urine inlet (10) of the urine drainage tube (1) is located on the front side wall of the outer tube (12), and the urine inlet (10) of the urine drainage tube (1) passes through the inner tube (13) in the radial direction. The outer tube (12) and the inner tube (13) are made of silicone, latex, polyurethane PET or nylon.

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