CN216022623U

CN216022623U - Catheter set

Info

Publication number: CN216022623U
Application number: CN202122392663.0U
Authority: CN
Inventors: 陈颖秀; 陈金华; 潘惟昕
Original assignee: Hainan Western Central Hospital
Current assignee: Hainan Western Central Hospital
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-03-15
Anticipated expiration: 2031-09-30

Abstract

The utility model relates to a catheter set, which comprises a urethral dilator, a guide wire sleeve and a catheter, wherein the urethral dilator comprises an arc part, a hollow channel and a tail part, the arc part is hollow and bent, the front end of the arc part is closed and adopts a round and smooth structure, and a bottom wall guide hole for guide wire to pass through and a side wall guide hole for urine drainage are arranged on the side wall of the front end of the arc part. The guide wire sleeve comprises a guide wire and a guide wire tube, and the guide wire is provided with a guide wire head and a guide wire body. The catheter comprises a catheter head part, a drainage channel and a catheter tail part, and the catheter head part is provided with a catheter front hole and a side hole. The urethra dilator and the front end of the catheter are optimized, and the urethra of a patient is prevented from being stimulated when the sharp front end enters the urethra dilator and the front end of the catheter are rounded and provided with holes on the side wall. The side walls of the urethra dilator and the urethral catheter are provided with additional side wall holes, so that the urethral catheterization is separated from the work of guiding the guide wire, and the influence on the urinary drainage caused by the blockage of the single guide hole due to foreign matters such as the guide wire or blood clots is avoided.

Description

Catheter set

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a catheter set.

Background

Acute urinary retention is one of the common diseases in emergency treatment of urinary surgery, the main causes of the acute urinary retention include benign prostatic hyperplasia, bladder neck contracture, urethral stricture, bladder outlet obstruction caused by urethral trauma and the like or the damage of urethral integrity, and an emergency treatment indwelling catheter is usually needed.

However, a considerable number of patients in clinical practice have difficulty in catheterization, and the patients need to replace the hard catheter for many attempts or perform urethral dilatation and then insert the catheter, thereby suffering from the pain caused by many catheterization operations. And consequently severe hematuria, and even infection, occurs. Even after urethral dilation is performed on some patients, the catheter cannot be successfully placed, mainly because the urethral dilator cannot enter the bladder, or after the urethral dilator is inserted and pulled out, the urethral is retracted and the catheter cannot be placed because the toughness of the catheter is obviously lower than that of the urethral dilator or other reasons. For the patients who can not smoothly put the catheter, the operation with larger wound such as cystoscope urinary catheter putting operation or suprapubic cystostomy operation is needed, and the pain, hematuria, infection and other risks of the patients are obviously increased.

There are related patents which propose solutions for following the urethra dilated by the urethral dilator with a guide wire and guiding the subsequent catheter to avoid the above problems as much as possible. This type of catheter usually has a dilator and a catheter opening at the very front end of the tubular housing, whereas the minimum size of a urethral dilator is 8F, i.e. an outer diameter of only phi 0.264 cm. Limited by the extremely fine outer diameter and hollow structure of the catheter, the dilator and the catheter are further sharp due to the difficulty in chamfering the front end, and the delicate urethra is easily damaged in the catheterization operation. Therefore, it is necessary to optimize the structure further to reduce the pain of the patient caused by inserting the catheter.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a catheter set, which improves the use experience of a common urethral dilator and a common catheter under the condition of ensuring a thinner outer diameter size.

The technical scheme adopted by the utility model for solving the technical problems is as follows: provides a catheter set which comprises a urethral dilator, a guide wire sleeve and a catheter,

the urethral dilator comprises an arc part, a hollow channel and a tail part, wherein the arc part is hollow and bent, the front end of the arc part is closed and adopts a round and smooth structure, a bottom wall guide hole for leading a guide wire to pass through and a side wall guide hole for draining urine are arranged on the side wall of the front end of the arc part, and the bottom wall guide hole and the side wall guide hole are mutually communicated and are communicated with a tail end interface positioned at the tail part through the hollow channel;

the guide wire sleeve comprises a guide wire and a guide wire tube, the guide wire is provided with a guide wire head and a guide wire body, the end part of the guide wire body is connected with the guide wire head, the guide wire adopts a bendable guide wire head, and the guide wire tube is a bent hollow circular tube for accommodating the guide wire;

the catheter comprises a catheter head part, a drainage channel and a catheter tail part, the catheter head part is provided with a catheter front hole and a catheter side hole, and the catheter front hole and the catheter side hole are communicated with the drainage channel.

The tail part of the arc part is provided with a heart-shaped handle.

The guide wire is made of medical metal materials and can be stored in the guide wire tube in a bending mode.

The length of the guide wire is greater than the sum of the lengths of the catheter and the urethral dilator.

The tail part of the catheter is provided with a flushing channel, and one end of the flushing channel is communicated with the drainage channel.

The tail of the catheter is also provided with an inflation interface which is communicated with an inflation channel, and one end of the inflation channel is communicated with the air bag.

Advantageous effects

The urethra dilator and the front end of the catheter are optimized, and the mode of round wetting heads and side wall opening is adopted, so that the stimulation which is possibly generated to the urethra of a patient when the sharp front end enters the urethra dilator and the front end of the catheter are avoided.

The side walls of the urethral dilator and the urethral catheter are provided with additional side wall holes to separate the urethral catheterization from the work of the guide wire. Avoid blocking up urethra dilator diapire guide hole or catheter front hole because of foreign matters such as seal wire or clot and influence the urine and derive, influence the urine and derive.

The surgeon can open the urethra through the round head of the urethra dilator and guide the urethra into the bladder, then the guide wire and the catheter are placed into the urethra dilator, and finally the catheter is kept in the bladder of the patient. The success rate of the guide wire placement is increased, and the pain of the patient and the related risks of hematuria, infection and the like are reduced.

Drawings

Figure 1 is a schematic view of a urethral dilator in a catheter package,

wherein, 1-urethra dilator; 2-an arc part; 3-tail; 4-bottom wall guide holes; 5-side wall guide hole; 6-a hollow channel; 7-heart shaped handle; 8-terminal linker.

Fig. 2 is a schematic view of the use of a guide wire in a catheter package in a urethral dilator, wherein 9-the guide wire head; 10-a wire guide body.

Figure 3 is a schematic view of a guide wire in a catheter package,

wherein, 11-the guide wire tube; 19-a guide wire sleeve; 21-guide wire.

Figure 4 is a schematic view of a catheter set,

wherein, 12-front hole of catheter; 13-side catheter holes; 14-an air bag; 15-an inflation channel; 16-a flush channel; 17-a drainage channel; 18-a gas-filled interface; 20-urinary catheters; 22-catheter head; 23-catheter tail.

Like reference symbols in the various drawings indicate like structure.

Detailed Description

The utility model will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.

The utility model provides a catheter set which comprises a urethral dilator 1, a guide wire sleeve 19 and a catheter 20.

Wherein as shown in fig. 1, urethra expander 1 includes arc portion 2, hollow channel 6 and afterbody 3, arc portion 2 cavity is crooked, and the front end is sealed, adopts the structure of round moist head, accords with male urethra structure, damages the urethra when effectively avoiding putting into. The side wall of the front end of the arc part 2 is provided with a bottom wall guide hole 4 for leading a guide wire 21 to pass through and a side wall guide hole 5 for draining urine, the bottom wall guide hole 4 and the side wall guide hole 5 are communicated with each other and are communicated with a tail end joint 8 positioned at the tail part 3 through a hollow channel 6, and the bottom wall guide hole 4 and the side wall guide hole 5 are helpful for judging the position of the urethra dilator 1 entering the urethra.

As shown in fig. 3, the guide sleeve 19 includes a guide wire 21 and a guide wire tube 11, the guide wire 21 is provided with a guide wire head 9 and a guide wire body 10, the end of the guide wire body 10 is connected with the guide wire head 9, the guide wire 21 adopts a bendable guide wire head 9, and the guide wire tube 11 is a bent hollow circular tube for accommodating the guide wire 21. The length of the guide wire 21 is larger than the sum of the lengths of the urethral canal 20 and the urethral dilator 1, so that the guide wire 21 can guide the urethral canal to enter and exit.

As shown in fig. 4. The urinary catheter 20 comprises a urinary catheter head part 22, a drainage channel 17 and a urinary catheter tail part 23, wherein the urinary catheter head part 22 is provided with a urinary catheter front hole 12 and a urinary catheter side hole 13, and the urinary catheter front hole 12 and the urinary catheter side hole 13 are both communicated with the drainage channel 17.

In other embodiments, the catheter tail 23 is further provided with an irrigation channel 16 and an air inflation interface 18. One end of the flushing channel 16 is communicated with the drainage channel 17, and flushing can be carried out when needed. The inflation port 18 is in communication with the inflation channel 15, and the other end of the inflation channel 15 is in communication with the balloon 14 to facilitate inflation positioning after the urinary catheter 20 enters the bladder.

Compared with the direct placement of the catheter 20, the urethral dilator 1 is easier to be introduced into the bladder, so that repeated catheterization attempts with a harder catheter can be effectively avoided, and the pain of a patient can be reduced. The arc portion 2 of urethra expander 1 is provided with diapire guide hole 4, can also put into the bladder for seal wire 21 and provide the passageway in the drainage urine, increases the success rate of putting into seal wire 21, effectively avoids putting into the catheter failure after carrying out simple urethra expansion or reduces under the cystoscope catheter and puts into the operation operations that the wound is bigger such as art or suprapubic cystostomy, reduces patient's misery.

When the catheter 20 is placed, the front hole 12 of the catheter is placed into the urethra along the guide wire 21, so that the blind insertion of the catheter 20 is avoided, and the urethral catheter has the advantages of simplicity and convenience in operation, strong practicability and high reliability.

The guide wire 21 is provided with a guide wire head 9 and a guide wire body 10, the end part of the guide wire body 10 is connected with the guide wire head 9, and the guide wire 21 adopts the bendable guide wire head 9, so that the urethra can be effectively prevented from being damaged when the guide wire 21 is placed in.

The specific use method of the utility model comprises the following steps:

s1: injecting lubricant such as oxybuprocaine gel and paraffin oil into urethra, simultaneously squeezing urethra, and reversely squeezing lubricant into posterior urethra from anterior urethra. After the urethra is sufficiently lubricated, the urethra dilator 1 is taken, the surface of the urethra dilator 1 is coated with a lubricant such as oxybuprocaine gel, paraffin oil and the like, after the urethra dilator 1 is sufficiently lubricated, the urethra dilator 1 is slowly inserted along the urethra until the urethra dilator 1 reaches the bladder, and urine is led out from the bottom wall guide hole 4 and the side wall guide hole 5 of the urethra dilator 1.

S2: then the guide wire 21 is placed into the urethra dilator 1 through the hollow channel 6, the guide wire head 9 enters the bladder through the guide hole 4 on the bottom wall of the urethra dilator 1, and the length of the placed guide wire 21 is longer than that of the urethra dilator 1.

S3: the guide wire 21 is continuously kept in the bladder, and the guide wire 21 is continuously and lightly fed into the bladder while the urethral dilator 1 is slowly pulled out. After the urethral dilator 1 is pulled out, the guide wire 21 is retained.

S4: finally, the catheter 20 is inserted into the urethra along the guide wire 21 through the front hole 12 of the catheter, the guide wire 21 penetrates through the front hole 12 of the catheter and is discharged through the drainage channel 17, in the process of inserting the catheter 20, the guide wire 21 is fixed by one hand, the catheter 20 is placed into the urethra along the guide wire 21 by the other hand, after the insertion is finished, the air bag 14 is inflated to fix the catheter 20, the guide wire 21 is pulled out, and the operation is finished.

Furthermore, the side wall guide holes 5 can be provided with two or more than two, for example, two sides of the front end of the arc part 2 are respectively provided with one side wall guide hole 5, so that the smoothness of urine guiding out is further ensured.

Further, the present invention may provide urethral dilators of different sizes in patients for urethral strictures. When the urethra is expanded only, the minimal urethra dilator can be placed in the urethra, the guide wire is reserved, and then the large urethra dilator is replaced along the guide wire.

The method can effectively improve the safety and success rate of indwelling catheterization, and is suitable for the situation of acute urinary retention caused by various reasons such as urethral stricture, urethral malformation and prostatic hyperplasia.

Claims

1. A catheter set comprises a urethral dilator (1), a guide wire sleeve (19) and a catheter (20), and is characterized in that,

the urethral dilator (1) comprises an arc part (2), a hollow channel (6) and a tail part (3), wherein the arc part (2) is hollow and bent, the front end of the arc part is closed and adopts a round and smooth structure, a bottom wall guide hole (4) for a guide wire (21) to pass through and a side wall guide hole (5) for guiding urine are arranged on the side wall of the front end of the arc part (2), and the bottom wall guide hole (4) and the side wall guide hole (5) are communicated with each other and are communicated with a tail end joint (8) positioned at the tail part (3) through the hollow channel (6);

the guide wire sleeve (19) comprises a guide wire (21) and a guide wire pipe (11), the guide wire (21) is provided with a guide wire head (9) and a guide wire body (10), the end part of the guide wire body (10) is connected with the guide wire head (9), the guide wire (21) adopts a bendable guide wire head (9), and the guide wire pipe (11) is a bent hollow circular pipe for accommodating the guide wire (21);

the catheter (20) comprises a catheter head (22), a drainage channel (17) and a catheter tail (23), the catheter head (22) is provided with a catheter front hole (12) and a catheter side hole (13), and the catheter front hole (12) and the catheter side hole (13) are communicated with the drainage channel (17).

2. A catheter set according to claim 1, wherein the tail (3) of the arc (2) is provided with a heart-shaped handle (7).

3. The urinary catheter set according to claim 1, wherein the guide wire (21) is made of medical metal and can be flexibly stored in the guide wire tube (11).

4. A catheter set according to claim 1 or 3 wherein the length of the guide wire (21) is greater than the sum of the lengths of the catheter (20) and the urethral dilator (1).

5. A catheter set according to claim 1, wherein the catheter tail (23) is provided with an irrigation channel (16), one end of the irrigation channel (16) being in communication with the drainage channel (17).

6. A catheter set according to claim 1 or 5 wherein the catheter tail (23) is further provided with an inflation port (18), the inflation port (18) is communicated with the inflation channel (15), and one end of the inflation channel (15) is communicated with the balloon (14).