CN112138267A

CN112138267A - Multi-cavity urethra washing groove type catheter

Info

Publication number: CN112138267A
Application number: CN202011146294.0A
Authority: CN
Inventors: 徐丹枫; 黄静怡
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2020-12-29

Abstract

The invention relates to a multi-cavity urethra washing slotted catheter, wherein one section of the outer wall of a channel of a catheter main body is set to be in a drainage groove range, and a plurality of drainage grooves which are arranged at intervals are axially arranged around the drainage groove range; a section of drainage groove-free range is arranged between the drainage groove range and the balloon, and the drainage groove-free range can be tightly attached to the urethra; a urethral flushing channel is axially arranged in the outer wall of the catheter main body channel, the urethral flushing channel forwards leads to the position without the range of the drainage grooves, an annular pipeline is embedded in the position without the range of the drainage grooves, and small holes are formed in the side wall of the annular pipeline corresponding to the positions of the drainage grooves; under the working state, the range of the drainage groove is partially positioned in the urethra and partially positioned outside the body. The urethral catheter is provided with the urethral catheter for urethral irrigation and drug perfusion in the cavity, and has the function of cleaning the urethra while normal urethral catheterization is realized.

Description

Multi-cavity urethra washing groove type catheter

Technical Field

The invention relates to a catheter, in particular to a multi-cavity urethra washing grooved catheter.

Background

The catheter is one of medical instruments with the highest clinical use frequency, and the most common catheter at present is a disposable silica gel Foley catheter which is divided into a double-cavity catheter and a three-cavity catheter. The double-cavity catheter consists of a cavity which is communicated with the bladder and the outside of the body and can drain urine, and a water sac communicated with the front end of the catheter and used for preventing the catheter from slipping.

In the process of clinical use, the catheters used at present have some problems to be solved urgently, in particular to patients needing long-term indwelling catheters such as urine retention and prostate cancer postoperation:

1) urethral mucosa injury caused by the catheter is difficult to avoid. The catheter body of the catheter used at present is of a regular cylindrical tubular structure and is tightly attached to the mucous membrane of the urethra, and although a silica gel material with less damage to the mucous membrane is adopted, the mucous membrane damage caused by long-term attachment is still difficult to avoid, so that the discomfort of a patient is caused.

2) Urinary secretion accumulation causes urethral irritation symptoms. Due to the urethral mucosa injury, the inflammatory secretion of the urethra is increased, the secretion is difficult to discharge under the state that the tubular catheter is placed, and the common symptoms of patients are urethral acid distension and even bladder and urinary tendon contracture stimulation, so that the urine leaks out of the catheter.

3) Urinary catheter placement is difficult when the urethra is tortuous. The catheters used at present are easy to slip or difficult to insert due to the thick head part and the lubricating effect of the catheter in the process of inserting, especially for some patients with urethral malformation or urethral stenosis.

Disclosure of Invention

The invention aims to provide a grooved urinary catheter which is provided with a cavity for urethral irrigation and drug filling, and has the function of cleaning the urethra while carrying out normal urinary catheterization.

The invention adopts the following technical scheme:

a multi-cavity urethra washing slotted catheter is characterized in that one section of the outer wall of a channel of a catheter main body is set to be a drainage groove range, and a plurality of drainage grooves 4 which are arranged at intervals are formed in the periphery of the drainage groove range along the axial direction; a section of drainage groove-free range is arranged between the drainage groove range and the balloon, and the drainage groove-free range can be tightly attached to the urethra; a urethra flushing channel 3 is axially arranged in the outer wall of the catheter main body channel, the urethra flushing channel 3 is communicated forwards to the position without the range of the drainage grooves, an annular pipeline 6 is embedded in the position without the range of the drainage grooves, and small holes 5 are formed in the side wall of the annular pipeline 6 corresponding to the positions of the drainage grooves 4; under the working state, the range of the drainage groove is partially positioned in the urethra and partially positioned outside the body.

Preferably, a bladder irrigation channel 1 is further axially arranged inside the outer wall of the catheter body channel, and the front end of the bladder irrigation channel 1 is provided with a water outlet for communicating with the body.

Preferably, the outer wall of the catheter main body channel is further axially provided with a balloon injection channel 2, and the balloon injection channel is communicated with a balloon 7 positioned on the front side of the range without drainage grooves.

Preferably, the catheter head end is provided with a rounded leading end 8, said leading end having an outer diameter 8 smaller than the outer diameter of the catheter head.

Preferably, the drainage grooves are uniformly surrounded by 8 drainage grooves 4 with large openings, small bottoms and blunt edges.

Preferably, the length of the range of the drainage grooves is 230 mm.

Further, the length of the range without the drainage grooves is 30 mm.

Further, the length of the guide type front end 8 is 5mm, the outer diameter is gradually reduced from back to front, and the outer diameter of the foremost end is 3 mm.

Preferably, the multi-cavity urethra washing grooved type catheter is a disposable product.

Preferably, the annular channel is provided with a notch, and the notch is positioned at a position corresponding to the bladder irrigation channel 1, so that the bladder irrigation channel 1 avoids the position of the annular channel, and the wall of the bladder irrigation channel 1 is prevented from being too thin.

The invention has the beneficial effects that:

1) the setting of drainage groove can avoid hugging closely thereby the cylinder structure of mucous membrane reduces the oppression damage to the mucous membrane on the one hand, and on the other hand can make urethra secretion draw forth the urethra through the drainage groove naturally, can clean in the urethral orifice, reduces the uropoiesis stimulation symptom.

2) The urethra washing cavity is designed, the tail ends of the drainage grooves of the self-urethral catheter are respectively provided with an opening in the drainage groove, a patient who keeps the urethral catheter for a long time can be washed by the urethra, and the medicine can be used for perfusion and washing to perform treatments such as anti-inflammation, spasmolysis and the like when necessary; reduces the uncomfortable symptoms of the patient, increases the function of washing the urethra and solves the clinical problem faced by the urologist.

3) The thin and round guide type front end is arranged at the head end of the original catheter, so that the process of placing the catheter is smoother, and the catheter can accurately enter the urethra through a correct urethra opening.

Drawings

FIG. 1 is a cross-sectional view of a multi-lumen urethral irrigation slotted catheter of the present invention.

Fig. 2 is a sectional view taken along line a-a in fig. 1.

Fig. 3 is a sectional view taken along line B-B in fig. 1.

Fig. 4 is a sectional view taken along line C-C in fig. 1.

In the figure, 1, a bladder irrigation channel, 2, a balloon injection channel, 3, a urethra irrigation channel, 4, a drainage groove, 5, a small hole, 6, an annular pipeline, 7, a balloon and 8, a guide type front end.

Detailed Description

The invention is further described with reference to the following figures and specific examples.

Referring to fig. 1-4, a multi-cavity urethra washing slotted catheter is provided, wherein a section of the outer wall of a channel of a catheter main body is arranged in a drainage groove range, and a plurality of drainage grooves 4 arranged at intervals are axially arranged around the drainage groove range; a section of drainage groove-free range is arranged between the drainage groove range and the balloon, and the drainage groove-free range can be tightly attached to the urethra; a urethra flushing channel 3 is axially arranged in the outer wall of the catheter main body channel, the urethra flushing channel 3 is communicated forwards to the position without the range of the drainage grooves, an annular pipeline 6 is embedded in the position without the range of the drainage grooves, and small holes 5 are formed in the side wall of the annular pipeline 6 corresponding to the positions of the drainage grooves 4; under the working state, the range of the drainage groove is partially positioned in the urethra and partially positioned outside the body.

In this embodiment, referring to fig. 1-4, a bladder irrigation channel 1 is further axially arranged inside the outer wall of the catheter body channel, and the front end of the bladder irrigation channel 1 is provided with a water outlet for communicating with the body.

In this embodiment, referring to fig. 1-2, a balloon injection channel 2 is also provided axially outside the outer wall of the catheter body channel, and communicates with a balloon 7 located at the front side of the non-drainage groove area.

In this embodiment, see fig. 1, the catheter head end is provided with a rounded leading end 8, said leading end having an outer diameter 8 being smaller than the outer diameter of the catheter head.

In this embodiment, referring to FIGS. 3-4, the extent of the channels is uniform around the 8-mouth large-bottomed blunt-edged channels 4.

In this embodiment, referring to FIG. 1, the extent of the drainage slots is 230mm in length.

In this embodiment, referring to FIG. 1, the length of the non-drainage channel region is 30 mm.

In this embodiment, with continued reference to FIG. 1, the leading end 8 has a length of 5mm, an outer diameter that decreases progressively from the rear to the front, and a forwardmost outer diameter of 3 mm.

In this embodiment, the multi-lumen urethral irrigation slotted catheter is a single use product.

In this embodiment, referring to fig. 4, the annular channel has a gap, and the gap is located at a position corresponding to the bladder irrigation channel 1, so that the bladder irrigation channel 1 avoids the position of the annular channel, and the wall of the bladder irrigation channel 1 is prevented from being too thin.

Specifically, the catheter is made by the silica gel material, and the main part is cylindric pipeline, diameter 8mm, lumen diameter 3.5mm, except the lumen that is used for the drainage urine, establishes 3 lumens again in addition for fixed sacculus chamber diameter 0.8mm, the bladder is washed and the urethra is washed the diameter and is 1.2mm, 3 lumens are being respectively at the chamber way opening that the tail end branch of catheter can switch on.

According to the 30mm position at the tail end of the saccule 7, 8 drainage grooves 4 which are uniformly distributed around the tube cavity are arranged. The shape of the drainage groove 4 is big in mouth and small in bottom, the mouth is about 1.6mm, the deepest part of the drainage groove is 0.7mm, the length of the drainage groove is 230mm, and the length of the drainage groove is mainly set according to the length of the urethra. The cavity that the urethra was washed is said 6 at the drainage groove front end through annular cavity, and the opening aims at each drainage groove 4 front end in each drainage groove 4, can supply the urethra to wash, and the opening diameter of aperture 5 is about 0.3 mm.

The catheter front end is equipped with guide type front end 8, and length is about 5mm, and minimum diameter 3mm links up to the catheter main part evenly.

In summary, the invention is an improvement based on the prior art, and the improvement is summarized as follows:

for 1) drainage groove: on the basis of the main part of the original cylindrical tubular catheter, the drainage grooves are evenly formed around 8 openings, the big bottom and the blunt edge, so that the compression injury to the mucous membrane due to the cylindrical structure of the mucous membrane can be reduced, the urethral orifice can be naturally led out by urethral secretions through the drainage grooves on the other hand, the urethral orifice can be cleaned, and the urinary tract stimulation symptoms can be reduced.

For 2) urethral irrigation lines: the urethra washing cavity parallel to the bladder washing cavity is designed, the tail ends of the drainage grooves of the self-catheter are respectively opened in the drainage grooves, a patient who keeps the catheter for a long time can be washed of the urethra, and the medicine can be used for perfusion and washing to perform treatments such as anti-inflammation, spasmolysis and the like when necessary.

For 3) catheter-guided front end: the thin and round guide type front end is arranged at the head end of the original catheter, so that the process of placing the catheter is smoother, and the catheter can accurately enter the urethra through a correct urethra opening.

While the preferred embodiments of the present invention have been described, those skilled in the art will appreciate that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A multi-cavity urethra washing grooved catheter is characterized in that:

one section of the outer wall of the catheter main body channel is set to be in the range of the drainage groove, and a plurality of drainage grooves (4) which are arranged at intervals are formed in the periphery of the range of the drainage groove along the axial direction;

a section of drainage groove-free range is arranged between the drainage groove range and the balloon, and the drainage groove-free range can be tightly attached to the urethra;

a urethra flushing channel (3) is axially arranged in the outer wall of the catheter main body channel, the urethra flushing channel (3) is forwardly communicated to the position without the range of the drainage grooves, an annular pipeline (6) is buried in the position without the range of the drainage grooves, and small holes (5) are formed in the side wall of the annular pipeline (6) corresponding to the positions of the drainage grooves (4);

under the working state, the range of the drainage groove is partially positioned in the urethra and partially positioned outside the body.

2. A multi-lumen urethral irrigation slotted catheter according to claim 1 wherein: a bladder irrigation channel (1) is further axially arranged in the outer wall of the catheter body channel, and a water outlet for communicating with the inside of the body is formed in the front end of the bladder irrigation channel (1).

3. A multi-lumen urethral irrigation slotted catheter according to claim 1 wherein: the outer part of the outer wall of the catheter main body channel is also provided with a balloon injection channel (2) along the axial direction, and the balloon injection channel is communicated with a balloon (7) positioned at the front side of the range without drainage grooves.

4. A multi-lumen urethral irrigation slotted catheter according to claim 1 wherein: the head end of the catheter is provided with a round guide type front end (8), and the outer diameter (8) of the guide type front end is smaller than that of the head part of the catheter.

5. A multi-lumen urethral irrigation slotted catheter according to claim 1 wherein: the drainage groove range is evenly around 8 drainage grooves (4) with large openings, small bottoms and blunt edges.

6. A multi-lumen urethral irrigation slotted catheter according to claim 1 wherein: the length of the range of the drainage grooves is 230 mm.

7. A multi-lumen urethral irrigation slotted catheter according to claim 6 wherein: the length of the range without the drainage grooves is 30 mm.

8. A multi-lumen urethral irrigation slotted catheter according to claim 4 wherein: the length of guide type front end (8) is 5mm, and the external diameter reduces from back to front gradually, and the external diameter of foremost end is 3 mm.

9. A multi-lumen urethral irrigation slotted catheter according to claim 1 wherein: the multi-cavity urethra washing grooved type catheter is a disposable product.

10. A multi-lumen urethral irrigation slotted catheter according to claim 1 wherein: the annular channel is provided with a gap, and the gap is positioned at a position corresponding to the bladder irrigation channel (1), so that the bladder irrigation channel (1) avoids the position of the annular channel, and the wall of the bladder irrigation channel (1) is prevented from being too thin.