CN108785831A - A kind of collapsible expansion catheter - Google Patents

Abstract

The present invention relates to the technical field of urinary catheters, in particular to a retractable and expandable urinary catheter, comprising a urinary catheter, one end of the catheter is provided with a catheter joint, and the end of the catheter away from the catheter joint is provided with an urination port. The surface of the urinary catheter is covered with a catheter outer tube, and the surface of the end of the catheter outer tube close to the catheter joint is covered with an air bag ring. The inner wall of the elastic layer is provided with an inflatable cavity, the inner side of the elastic layer is provided with a sleeve cavity, the end of the catheter outer tube away from the catheter connector is provided with an inflatable bag, and the other end of the inflatable bag is connected with an air intake tube. The present invention is simple in structure and easy to use. The ring and the catheter outer tube can ensure the tight fit between the outer wall of the catheter and the urethra during catheterization, so as to avoid urine leakage. The catheter outer tube can be enlarged and reduced according to needs, so as to facilitate the size requirements of different patients. The catheter joint can prevent the catheter port from being blocked, thereby improving the catheterization effect.

Description

A retractable dilatable urinary catheter

technical field

The invention relates to the technical field of urinary catheters, in particular to a retractable and expandable urinary catheter.

Background technique

Urinary catheterization, commonly used for urinary retention, retain urine for bacterial culture, accurately record urine volume, understand the cause of oliguria or anuria, measure residual urine volume, bladder capacity and cystometry, inject contrast medium, bladder flushing, detect urethral abnormalities No stenosis and preoperative preparation of pelvic organs.

However, due to bladder sphincter injury and relaxation, nerve dysfunction, and urethral spasm, the patient loses the ability to control urination, making urine flow out involuntarily, making the patient's perineum wet for a long time, which will lead to many complications, such as pressure sores, eczema, urinary tract Infection, etc., have greatly increased the workload of the nursing staff and the complications of the patient. Due to the individual differences of each patient, it is difficult to select a catheter suitable for the patient at one time. Inserting different types of catheters will damage the urethra and cause pain for the patients. In addition, when catheterizing, it is easy to block the urine port due to the small internal space. In view of this, we propose a retractable and expandable catheter.

Contents of the invention

The purpose of the present invention is to provide a shrinkable and expandable urinary catheter to solve the problems of easy leakage of urine, inappropriate size of the urinary catheter and easy blockage of the urine port in the above-mentioned background technology.

To achieve the above object, the present invention provides the following technical solutions:

A retractable and expandable urinary catheter, comprising a urinary catheter, one end of the catheter is provided with a catheter connector, the end of the catheter away from the catheter connector is provided with an urination port, and the catheter is close to the urination The outer wall of one end of the mouth is connected with a drug injection tube, and one end of the drug injection tube is provided with a sealing plug;

The surface of the urinary catheter is covered with a catheter outer tube, and the surface of the end of the catheter outer tube close to the catheter joint is covered with an air bag ring, and the inside of the catheter outer tube is provided with an elastic layer. The outer wall of the layer and the inner wall of the catheter outer tube are provided with an inflatable cavity, and the inner side of the elastic layer is provided with a sleeve cavity;

The end of the catheter outer tube away from the catheter joint is provided with an inflatable bag, one end of the inflatable bag is embedded with an air intake plug, and the other end of the inflatable bag is connected with an air intake tube, and the air intake tube is far away from the end of the inflatable bag. One end runs through the outer wall of the catheter outer tube and communicates with the air-filled cavity.

Preferably, the sealing plug is in interference fit with a port of the injection tube.

Preferably, one end of the catheter outer tube is tightly welded to the catheter connector.

Preferably, the surface of the air bag is provided with several anti-skid lines.

Preferably, the side surface of the catheter outer tube close to the inflatable bag is bonded with leggings through waterproof glue, and both sides of the leggings are provided with adhesive strips.

Preferably, the adhesive strip is Velcro.

Preferably, the catheter connector includes a urine inlet tube, one end of the urine inlet tube is provided with a urine inlet head, and a plurality of urine inlet openings are opened on the surface of the urine inlet head, and several urine inlet ports are opened on the surface of the urine inlet tube. The side port, the surface of the urinary inlet tube is provided with several rubber protrusions near the outside of the side port.

Compared with the prior art, the present invention has the beneficial effects: the present invention is simple in structure and easy to use, and the airbag ring and catheter outer tube provided therein can ensure that the outer wall of the catheter is closely attached to the urethra when performing catheterization , so as to avoid urine leakage, the catheter outer tube can be expanded and reduced according to needs, so as to facilitate the size requirements of different patients, and the catheter joint provided in it can avoid the blockage of the catheter port, thereby improving the catheter effect. Great practical value, easy to promote.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the structural representation of urinary catheter among the present invention;

Fig. 3 is the internal structure diagram of catheterization outer tube among the present invention;

Fig. 4 is a schematic diagram of the three-dimensional structure of the catheter joint in the present invention.

In the figure: 1, urinary catheter outer tube; 11, airbag ring; 12, sleeve cavity; 13, inflatable cavity; 14, elastic layer; 2, catheter connector; 21, urinary catheter; 211, side port; Protrusion; 22, urine inlet; 221, urine inlet; 3, air bag; 31, air intake plug; 32, air intake pipe; 33, anti-slip pattern; 4, leggings; 41, adhesive strip; 5, guide Urinary tube; 51, urination port; 52, drug injection tube; 521, sealing plug.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as limiting the invention.

Example 1

A retractable and expandable urinary catheter, as shown in Figure 2, includes a urinary catheter 5, one end of the urinary catheter 5 is provided with a urinary joint 2, and one end of the urinary catheter 5 away from the urinary joint 2 is provided with a urination opening 51 One end of the urinary catheter 5 near the urination opening 51 is connected with a drug injection tube 52 , one end of the drug injection tube 52 is provided with a sealing plug 521 , and the sealing plug 521 is in an interference fit with one port of the drug injection tube 52 .

In this embodiment, the urinary catheter 5 is supported by a rubber material with certain elasticity, and its material is soft, so that it will not cause damage to the urethra when inserted into the urethra.

As shown in Figures 1 and 3, the surface of the catheter 5 is covered with a catheter outer tube 1, and one end of the catheter outer tube 1 is tightly welded to the catheter joint 2, and the catheter outer tube 1 is close to the end of the catheter joint 2. An airbag ring 11 is sleeved on the surface of one end, an elastic layer 14 is arranged inside the catheter outer tube 1, an inflatable cavity 13 is arranged on the outer wall of the elastic layer 14 and the inner wall of the outer catheter tube 1, and a socket cavity is arranged on the inner side of the elastic layer 14 12.

In addition, the elastic layer 14 is made of polyurethane foam, which has a soft structure and good elasticity, and can expand or shrink according to the pressure of the internal gas, thereby adjusting the diameter of the urinary catheter 1 .

Specifically, the air bag ring 11 is supported by rubber material, and its interior is filled with air, which can increase the resistance after being placed inside the urethra, thereby preventing the catheter outer tube 1 from falling off.

As shown in Figure 1, an inflatable bag 3 is provided at the end of the catheter outer tube 1 away from the catheter joint 2, and a plurality of anti-skid lines 33 are arranged on the surface of the inflatable bag 3, and an air inlet plug 31 is embedded in one end of the inflatable bag 3, which is filled with air. The other end of the air bag 3 is connected with an air intake tube 32, and the end of the air intake tube 32 away from the inflatable bag 3 runs through the outer wall of the catheter outer tube 1 and communicates with the inflatable cavity 13, and the side surface of the outer catheter tube 1 close to the inflatable bag 3 passes through Waterproof glue is bonded with leggings 4, and both sides of leggings 4 are provided with adhesive strips 41, and adhesive strips 41 are Velcro.

Example 2

In the specific use process, the urinary catheter joint 2 is easy to block the urine inlet due to being close to the inner wall of the urethra during use, thereby affecting the catheterization effect. Therefore, we make improvements to the urinary catheter joint 2 on the basis of Example 1. , the urinary catheter connector 2 includes a urine inlet tube 21, one end of the urine inlet tube 21 is provided with a urine inlet head 22, the surface of the urine inlet head 22 is provided with a number of urine inlet ports 221, and the surface of the urine inlet tube 21 is provided with a number of side ports 211 A plurality of rubber protrusions 212 are provided on the surface of the urinary inlet tube 21 close to the outside of the side port 211 .

In this embodiment, the catheter joint 2 has a hemispherical hollow structure and is made of polyurethane foam material, and its structure is soft, which can prevent the patient from being injured when inserted into the urethra.

The working principle of the present invention: when using the device, insert the catheter joint at one end of the catheter 5 into the urethra, slowly enter the catheter 5 into the urethra, and when it enters the deep part of the urethra, the bladder ring 11 can increase the Large internal friction, so that the catheter 5 will not fall off, and then perform catheterization, and at the same time, the drug injection operation can be performed through the drug injection tube 52. When performing catheterization, the internal gas is squeezed into the inflatable cavity by pressing the inflatable bag 3 13, thereby increasing the diameter of the catheter outer tube 1, so that the outer wall of the catheter outer tube 1 is closely attached to the inner wall of the urethra, so as to avoid urine leakage during catheterization. Since the width of the urethra is different for different patients, by adjusting the catheterization The diameter of the outer tube 1 can make it adapt to different patients, and it is convenient to perform catheterization. During catheterization, the catheter connector 2 is easy to block in the urethra. The side port 211 is provided on the side to avoid blockage. At the same time, the rubber protrusion 212 can leave a certain gap between the side opening 211 and the outer wall of the urethra, so that the surface will not be blocked, and the effect of catheterization will be greatly improved. The fixing of the pipe 5 does not need to be supported by hands, which is more convenient to use.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and those described in the above-mentioned embodiments and description are only preferred examples of the present invention, and are not intended to limit the present invention, without departing from the spirit and scope of the present invention. Under the premise, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. A retractable dilatable urinary catheter, comprising a urinary catheter (5), characterized in that: one end of the urinary catheter (5) is provided with a catheter connector (2), and the urinary catheter (5) One end away from the urinary catheter connector (2) is provided with a urination opening (51), and the outer wall of one end of the catheter (5) near the urination opening (51) is connected with a drug injection tube (52), and the drug injection tube ( 52) is provided with a sealing plug (521) at one end; The surface of the catheter (5) is covered with a catheter outer tube (1), and the surface of one end of the catheter outer tube (1) close to the catheter joint (2) is covered with a balloon ring (11). The inside of the catheter outer tube (1) is provided with an elastic layer (14), the outer wall of the elastic layer (14) and the inner wall of the catheter outer tube (1) are provided with an air chamber (13), and the elastic layer ( 14) is provided with a socket cavity (12) on the inner side; An inflatable bag (3) is arranged on the end of the catheter outer tube (1) away from the catheter joint (2), and an air intake plug (31) is embedded in one end of the inflatable bag (3), and the inflatable bag ( The other end of 3) is connected with an air intake pipe (32), and the end of the air intake pipe (32) away from the inflatable bag (3) runs through the outer wall of the urinary catheter (1) and communicates with the inflatable chamber (13). 2. The shrinkable dilatable urinary catheter according to claim 1, characterized in that: the sealing plug (521) is in interference fit with a port of the drug injection tube (52). 3. The retractable and expandable urinary catheter according to claim 1, characterized in that: one end of the catheter outer tube (1) is tightly welded to the catheter connector (2). 4. The retractable and expandable urinary catheter according to claim 1, characterized in that: the surface of the inflatable bag (3) is provided with several anti-slip lines (33). 5. The retractable dilatable urinary catheter according to claim 1, characterized in that: the surface of the catheter outer tube (1) close to the inflatable bag (3) is bonded with leggings (4) by waterproof glue , both sides of the leggings band (4) are provided with adhesive strips (41). 6. The retractable and expandable urinary catheter according to claim 5, characterized in that: the adhesive strip (41) is a Velcro. 7. The retractable and expandable urinary catheter according to claim 1, characterized in that: the catheter connector (2) includes a urinary catheter (21), and one end of the urinary catheter (21) is provided with a urinary catheter. Head (22), the surface of the urine inlet head (22) is provided with some urine inlets (221), the surface of the urine inlet pipe (21) is provided with some side ports (211), the urine inlet pipe ( 21) is provided with several rubber protrusions (212) near the outside of the side port (211).