CN102029005B - Novel catheter - Google Patents

Abstract

The invention discloses a catheter, which comprises a catheter body. A urine inlet hole is formed on the head of the catheter body, and a urine drain hole is formed at the tail of the catheter body. The catheter is characterized by further comprising a head sleeve, wherein one end of the head sleeve is provided with notches or orifices, and the other end of the head sleeve is open and provided with a limiting flange; and the head sleeve can be movably sleeved outside the catheter body. The catheter provided by the invention can avoid bacteria on the inner side of a urethral orifice being brought into the deep part of the urethra and the bladder in a using process, and effectively reduces the occurrence of urinary tract infection of a patient.

Description

new catheter

technical field

The invention belongs to a clinical appliance, in particular to a urinary catheter.

Background technique

Studies have proved that patients with long-term indwelling urinary catheters are prone to urinary tract infections, and there are many reasons for urinary tract infections, but the most important point is that when the catheter is inserted, the bacteria on the inside of the urethral orifice are brought into the urinary tract by the catheter. Deep urethra and bladder, causing urinary tract infection and cystitis.

In order to solve the problem of urinary tract infection in patients with long-term indwelling catheters, the following improvements to catheters have been made in the prior art:

CN200820184424 discloses a urinary catheter, including a rubber tube, and a filter is fixedly arranged in the rubber tube.

CN200920023324 discloses a balloon catheter with a guide core. A guide core made of steel wire is arranged in the catheter body, and a steel ball is arranged on the inner end of the guide core. Such a catheter has a short insertion time and is relatively difficult cause urinary tract infections.

CN200820019604 discloses a multifunctional urinary catheter including a urinary catheter, a catheter hole, an air bag, an air guide tube and an inflatable ball. There is an outer casing outside the urethral section of the urinary catheter, and a ring is formed between the urinary catheter and the outer casing. The flushing channel has pits on the surface of the outer sleeve and flushing holes in the pits. The urinary catheter realizes one tube with multiple functions, and can clean the urethra while catheterizing.

CN200820021364 discloses a multifunctional urinary catheter, which includes a catheter body with a catheter lumen and an air cavity inside, and one end of the catheter body is respectively provided with a catheter opening connected to the catheter lumen and an air cavity the air bag, and the other end is respectively provided with a catheter tube connected to the catheter cavity and an air cavity tube connected to the air cavity. The catheter body is located outside the catheter cavity and the air cavity and is surrounded by a spiral permeable cavity The permeation cavity is closed at the end of the catheter port and the other end is provided with a permeation cavity connecting pipe; the external surface of the catheter tube is provided with a number of permeation holes connecting the permeation cavity.

But above-mentioned urinary catheter still can't solve the problem that the bacteria on the inside of the urethral orifice can be brought into the deep part of the urethra and bladder by the urinary catheter when the catheter is inserted.

Contents of the invention

The purpose of the present invention is to overcome the defects in the prior art and provide a urinary catheter.

In order to solve the foregoing technical problems, the present invention adopts the following technical solutions:

A urinary catheter, comprising a catheter body and a head sleeve, the head of the catheter body is provided with a urination hole, the tail is provided with an urination port, and one end of the head sleeve is provided with a cut or The other end of the orifice is open and is provided with a limiting flange, and the head sleeve can be movably sleeved outside the catheter body.

Preferably, the inner diameter of the head sleeve is slightly larger than the outer diameter of the catheter body.

Further, the limiting flange is a crimp or a bell mouth.

The cut is the gap left after the closed end is cut.

The incisions may be one or more.

Further, there are 2-4 incisions, each of which meets at the apex of the end where the incision is located, such as a "ten" incision or a "ya" incision.

When all the cuts are stretched, the head of the catheter body can pass through the cuts.

The orifice can be in various shapes, such as circular, square, polygonal and so on.

The size of the orifice is subject to the fact that the head of the catheter body can pass through the orifice in a stretched state.

Further, one end of the head sleeve provided with a notch or an opening is a round head.

The elastic material for making the head casing can be rubber, latex, polyurethane and other elastic materials. The catheter body is various conventional catheters.

Further, the length of the head sleeve is 2-4 cm. Due to different physiological structures, the cannula for males can be slightly longer, about 3 cm, and the cannula for females can be slightly shorter, about 2 cm.

When the present invention is in use, the urethral opening is disinfected first, and the head sleeve is first inserted into the urethra until the limiting flange of the head sleeve reaches the edge of the urethral opening to open the urethral opening, and then the catheter is slowly inserted into the head sleeve Tube body, after the head of the catheter body reaches the top of the head sleeve, keep the position of the head sleeve still, and forcefully push the head of the catheter body through the incision or orifice of the head sleeve to further push into the urethra Deep into the bladder, so that the catheter inserted later can avoid contact with the bacteria on the inside of the urethral opening, thus effectively solving the problem that when the conventional catheter is inserted into the urethra, the bacteria on the inside of the urethral opening will be brought from the catheter into the deep part of the urethra and bladder problems. Once the catheter is in place, the head cannula can either be retained at the urethral opening, or it can be pulled out of the urethral opening and withdrawn from the tail of the catheter.

The urinary catheter of the present invention has an ingenious conception, and compared with the existing urinary catheter, it can prevent the bacteria inside the urethral opening from being brought into the deep part of the urethra and bladder during use, and effectively reduce the incidence of urinary tract infection in patients.

Description of drawings

Fig. 1 schematic diagram of the utility model urinary catheter

Figure 2 Schematic diagram of head cannula incision

Figure 3 Schematic diagram of the orifice of the head sleeve

Fig. 4 schematic diagram of use of the utility model urinary catheter

Detailed ways

The urinary catheter as shown in Figure 1 includes a catheter body 1 and a head sleeve 2, the head of the catheter body is provided with a urine inlet 3, and the tail is provided with an urination port 4, and the head One end of the sleeve 2 is provided with a notch 5 or an orifice 6 , and the other end is open and provided with a limiting flange 7 . The head sleeve 2 can be movably socketed outside the catheter body 1 .

Further, the inner diameter of the head sleeve 2 is slightly larger than the outer diameter of the catheter body 1 .

Further, the limiting flange 7 is a crimp or a bell mouth.

The cutout 5 can be one or more. Each incision meets at the apex of the end where the incision is located, as shown in Figure 2, it is a "one" incision, a "ten" incision or a "ya" incision. When all the cuts are stretched, the head of the catheter body can pass through the cuts.

The orifice 6 may be circular as shown in FIG. 3 , or square, polygonal, etc. The size of the orifice is subject to the fact that the head of the catheter body cannot pass through the hole in a natural state, but the head of the catheter body can pass through it in a stretched state.

Further, one end of the head sleeve 2 provided with the cutout 5 or the hole 6 is a round head.

The production head sleeve is made of rubber.

Further, the head cannula is divided into male cannula and female cannula, the male cannula is about 3 cm long, and the female cannula is about 2 cm long.

When using, first disinfect the urethral opening, insert the head cannula into the urethra until the limiting flange of the head cannula reaches the edge of the urethral opening to open the urethral opening, and then slowly insert the catheter body into the head cannula, After the head of the catheter body reaches the top of the head sleeve, as shown in Figure 4, keep the position of the head sleeve still, and push the head of the catheter body through the incision or opening of the head sleeve Push it further deep into the urethra until it is inserted into the bladder, so that the inserted urinary catheter can avoid contact with the bacteria on the inside of the urethral opening, thereby effectively solving the problem that the bacteria on the inside of the urethral opening will be transferred from the catheter when the conventional urinary catheter is inserted into the urethra. Problems brought into the deep urethra and bladder. Once the catheter is in place, the head cannula can either be retained at the urethral opening, or it can be pulled out of the urethral opening and withdrawn from the tail of the catheter.

Claims (7)

1. A catheter, comprising a catheter body, the head of the catheter body is provided with a urination hole, and the tail is provided with an urination port, it is characterized in that the catheter also includes a head sleeve , one end of the head sleeve is provided with a cut or an orifice, and the other end is open and provided with a limit flange, the head sleeve can be movably socketed outside the catheter body, when the orifice or all When the incision is stretched, the head of the urinary catheter body can pass through the orifice or the incision, and the length of the sleeve at the head is 2-4 cm. 2. The urinary catheter according to claim 1, characterized in that, the limiting flange is a crimp or a bell mouth. 3. The urinary catheter according to claim 1, characterized in that there are one or more incisions. 4. The urinary catheter according to claim 3, characterized in that there are 2-4 said cutouts, and each cutout meets at the apex of the end where the cutout is located. 5. The urinary catheter according to claim 4, wherein the incision is a cross-shaped incision or a Y-shaped incision. 6 . The urinary catheter according to claim 1 , characterized in that, one end of the head sleeve provided with a notch or an opening is a round head. 7 . 7. The urinary catheter according to claim 1, wherein the elastic material for making the head sleeve is selected from rubber or latex.

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