CN201132003Y - A silicone balloon catheter - Google Patents

Abstract

The utility model provides a silicone balloon catheter, comprising: a catheter intubation unit, the catheter intubation unit includes an intubation tube in contact with the urethra, one or more tubes arranged on the tube wall of the intubation tube A plurality of side holes, and a balloon arranged at the end of the intubation catheter; a urinary catheter body, the catheter body is provided with a urine catheter cavity and a balloon catheter cavity; the catheter interface unit, the The catheter interface unit includes a catheter interface communicated with the urine catheter cavity and one or more branch pipes communicated with the balloon catheter cavity, and a check valve is arranged on the body of the branch pipe; A guide groove is provided on the outer surface of the tube body of the urinary catheter for guiding secretions caused by urinary tract infection or injury. The urinary catheter of the utility model can avoid or alleviate urinary tract infection, can drain urine smoothly, and can drain secretions of urinary tract infection in a timely and smooth manner, thereby reducing the incidence rate of urinary tract infection and reducing damage caused by urinary tract infection.

Description

A silicone balloon catheter

technical field

The utility model relates to a medical instrument tool, in particular to a silicone balloon urinary catheter.

Background technique

The common urinary catheter in the prior art needs to fix the catheter to the perineum with adhesive tape when indwelling, which makes the patient feel uncomfortable.

In order to overcome the above shortcomings, more and more balloon catheters are used. This kind of catheter saves the work procedure of skin preparation, avoids the fixing method of adhesive tape, and gets rid of the fact that the fixed adhesive tape is easy to pollute, fall off, and urine The tube slips back and forth in the urethra, and needs to be replaced and fixed in time. Therefore, indwelling catheter with balloon catheter has replaced common indwelling catheter in clinic.

The specific structure of the balloon catheter in the prior art includes: a catheter insertion unit, the catheter insertion unit includes a cannula in contact with the urethral opening, one or more tubes arranged on the wall of the cannula a side hole, and a balloon arranged at one end of the intubation tube; a catheter tube body, a urine catheter cavity and a balloon catheter cavity are arranged in the catheter tube body; a catheter interface unit, the catheter tube body, The urinary catheter interface unit includes a urinary catheter interface communicated with the cavity of the urine catheter and a branch pipe communicated with the cavity of the balloon catheter, and a check valve is arranged on the body of the branch pipe.

During use, the urinary catheter of the prior art is indwelling according to the following method:

Insert the cannula in contact with the urethral orifice from the urethral orifice. Urine will flow out after insertion into the bladder, and then insert about 3-5cm until the cannula reaches a suitable indwelling position; inject a specified amount of sterile water from the check valve to make The balloon is inflated; the catheter tube body is gently pulled so that the balloon is in full contact with the bladder; the catheter interface 31 is reliably connected and fixed to the urinary catheter, and the indwelling catheterization is started.

Then, the syringe is inserted into the check valve to retract the balloon, and the water in the balloon is completely discharged. After the balloon retracts, the catheter is gently pulled out, so that the urinary catheter catheter is placed in the patient's body.

After indwelling, the side hole of the urinary catheter collects urine, the urine enters the cavity of the urinary catheter, and then collects from the interface of the urinary catheter. Container devices such as catheter bags can also be connected to the catheter interface.

At present, balloon catheters are mainly silicone-coated latex balloon catheters and pure silicone balloon catheters. Silicone-Coated Latex Balloon Catheters are manufactured by continuously impregnating prefabricated latex Foley catheters with a curable silicone elastomer dispersion, which are manufactured from pure silicone, an advanced balloon forming process. After the catheter is inserted into the urethra, it can not only drain urine smoothly, but also play a role as a stent after urethroplasty.

The disadvantage of the above two silicone balloon catheters is that this catheter still introduces mild tissue edema and moderate inflammation, especially the usual indwelling catheter may cause damage and infection of the urethra or bladder. If the secretion caused by urinary tract infection or injury is not drained smoothly in the gap between the urethra and the urethral mucosa, it will not only aggravate the urethral injury, but also lead to urethral stricture in severe cases.

In summary, the art lacks a silicone balloon catheter that can avoid or alleviate urinary tract infection. Therefore, there is an urgent need in this area to develop a silicone balloon catheter that can avoid or alleviate urinary tract infections, can drain urine unobstructed, and can drain the secretions of urinary tract infections in time and smoothly, reducing the incidence of urinary tract infections. , reduce the damage caused by urinary tract infection.

Utility model content

The purpose of the design of the utility model is to obtain a silicone balloon catheter that can avoid or reduce urinary tract infection, which can drain urine smoothly, and can drain the secretions of urinary tract infection in a timely and smooth manner, reducing the occurrence of urinary tract infection rate and reduce the damage caused by urinary tract infection.

The utility model provides a silicone balloon urinary catheter, comprising:

A catheter insertion unit, the catheter insertion unit includes a cannula in contact with the urethral opening, one or more side holes arranged on the wall of the cannula, and a balloon arranged at one end of the cannula;

A catheter body, the catheter body is provided with a urine catheter cavity and a balloon catheter cavity;

A catheter interface unit, the catheter interface unit includes a catheter interface communicated with the urine catheter cavity and a branch tube communicated with the balloon catheter cavity, the body of the branch tube is provided with a stop reverse valve;

Its characteristic is that,

A guide groove is provided on the outer surface of the tube body of the urinary catheter for guiding secretions caused by urinary tract infection or injury.

In a specific embodiment, the guide groove is composed of two or more groove structures.

In a specific embodiment, the guide groove is composed of two longitudinal groove structures,

And the axis of the longitudinal groove structure is parallel to the axis of the urine catheter cavity and the axis of the balloon catheter cavity.

In a specific embodiment,

The axis of the longitudinal groove structure or has a first distance from the axis of the urine conduit cavity;

The axis of the longitudinal groove structure or has a second distance from the axis of the balloon catheter cavity;

The first distance and the second distance are substantially equal.

In a specific embodiment, the cross-section of the guide groove is arc-shaped or semi-circular.

In a specific embodiment, the cross-sectional area of the guide groove accounts for 10-30% of the cross-sectional area of the catheter body.

In a specific embodiment, the length of the guide groove is consistent with the length of the catheter body.

In a specific embodiment, the length of the guide groove is 1/2-9/10 of the length of the catheter body.

In a specific embodiment, the distance between the starting end of the guide groove and the contact end of the cannula and the urethral meatus is 5-10 cm.

In a specific embodiment, the silicone balloon urinary catheter is a double-tube or triple-tube urinary catheter.

The utility model has the advantages of:

The urinary catheter can not only drain urine smoothly, but also can drain secretions of urinary tract infection in a timely and smooth manner, thereby reducing the incidence of urinary tract infection and reducing damage caused by urinary tract infection. In a specific embodiment of the present utility model, a pure silica gel balloon urinary catheter with longitudinally symmetrical double grooves in the tube body made of pure silica gel material, advanced balloon forming process and unique slotting technology is also provided.

Description of drawings

Fig. 1 is the catheter structure of an embodiment of the present utility model and cross-sectional schematic diagram thereof;

Fig. 2 is an enlarged cross-sectional schematic diagram of a urinary catheter according to an embodiment of the present invention.

Detailed ways

After extensive and in-depth research, the designer of this utility model has obtained a catheter structure with grooves by improving the preparation process, so that the urine can be drained smoothly, and the secretions of urinary tract infection can be drained in a timely and smooth manner. Come out, reduce the incidence of urinary tract infection, reduce the damage caused by urinary tract infection. Completed the utility model on this basis.

Each technical characterictic of the present utility model is described below:

A silicone balloon catheter comprising:

Catheter intubation unit 1, the catheter intubation unit 1 includes a cannula 11 in contact with the urethral opening, one or more side holes 12 arranged on the wall of the cannula 11, and one or more side holes 12 arranged in the cannula Balloon 13 at one end of 11;

Catheter body 2, the catheter body 2 is provided with a urine catheter cavity 21 and a balloon catheter cavity 22;

A catheter interface unit 3, the catheter interface unit 3 includes a catheter interface 31 communicated with the urine catheter cavity 21 and a branch 32 communicated with the balloon catheter cavity 22, the branch A check valve 33 is arranged on the pipe body of 32;

Wherein, a guide groove 23 is provided on the outer surface of the catheter body 2 for guiding secretions caused by urinary tract infection or injury.

When in use, first indwell the urinary catheter intubation unit 1 according to the following method: insert the intubation tube 11 in contact with the urethral opening from the urethral opening, and urine will flow out after being inserted into the bladder, and then insert about 3-5cm until it is inserted. tube reaches a suitable indwelling position;; inject a specified amount of sterile water from the check valve 33 to inflate the balloon 13; gently pull the catheter body 2 so that the balloon 13 is in full contact with the bladder; insert the catheter interface 31 Reliably connected and fixed with the urinary catheter, began to indwelling catheterization.

Then insert the syringe into the check valve 33 to retract the balloon 13, completely discharge the water in the balloon 13, and gently pull out the catheter after the balloon retracts, so that the catheterization unit 1 is placed in the patient's body ;

After indwelling, the side hole 12 of the urinary catheter collects urine, the urine enters the cavity 21 of the urinary catheter, and then collects from the interface 31 of the urinary catheter. The above-mentioned catheter interface 31 can also be connected with container devices such as a catheter bag;

The utility model is characterized in that: the urinary tract infection secretion flows out through the guide groove 23 .

In a specific embodiment of the present utility model, the guide groove 23 is composed of two or more than two groove structures. Although providing one groove structure can also guide part of the secretion caused by urinary tract infection or injury, providing two or more longitudinal groove structures helps to better guide the secretion caused by urinary tract infection or injury.

In a preferred example, the guide groove 23 is composed of two longitudinal groove structures 23a, 23b, and the axis of the longitudinal groove structure 23a, 23b is in line with the axis of the urine catheter cavity 21, the balloon The axes of the catheter lumens 22 are parallel to each other.

When in use, since the side part has grooves 23 composed of two or more longitudinal groove structures, the secretions caused by urinary tract infection or injury can flow smoothly from the two or more longitudinal groove structures. to discharge.

More preferably, the axis of the longitudinal groove structure 23a or 23b has a first distance from the axis of the urine catheter cavity 21; The axes of 22 have a second spacing; the first and second spacings are substantially equal.

In use, the above-mentioned axis enables secretions caused by urinary tract infection or injury to be discharged smoothly from the two or more longitudinal groove structures. In addition, it also makes the processing more convenient. In addition, the user's pain is reduced.

In addition, the guide groove can also adopt a structure different from the longitudinal groove structure, for example, various shapes of alcoves are set on the outer surface of the catheter body, so that the secretion caused by urinary tract infection or injury can be removed from the Drain out of the alcove. The three-dimensional structure of the alcove is not specifically limited, for example, spiral or twill, as long as the surface is smooth enough not to increase the pain of the user.

The cross section of the guide groove 23 of the present invention can adopt various shapes, preferably arc or semicircle.

The cross-sectional area of the guide groove 23 of the present invention is not specifically limited. Specific examples of the cross-sectional area include but are not limited to: the cross-sectional area of the guide groove 23 accounts for 10-30% of the cross-sectional area of the catheter body 2 . The cross-sectional area of the guide groove 23 may be larger or smaller as necessary.

The cross-sectional area of the guide groove 23 is the sum of the cross-sectional areas of all groove structures. For example, when the guide groove 23 is composed of two longitudinal groove structures 23a, 23b, its cross-sectional area is the sum of the respective cross-sectional areas of the longitudinal groove structures 23a, 23b.

The longitudinal length of the guide groove 23 of the present invention is not specifically limited. Examples of the length include but not limited to: the length of the guide groove 23 is consistent with the length of the catheter body 2 . Alternatively, the length of the guide groove 23 is 1/2-9/10 of the length of the catheter body 2 .

Preferably, the length of the guide groove 23 is 1/2 to 9/10 of the length of the catheter body 2, and the distance between the starting end of the guide groove 23 and the contact end of the intubation tube 11 and the urethra is 5-9/10. 10cm. This better avoids backflow of secretions from said urinary tract infection or injury back into the patient's body (eg, bladder).

Specifically indwelling includes but is not limited to: the guide groove 23 is composed of two longitudinal groove structures 23a, 23b, at this time, starting from the urethral opening contact end on the insertion tube 11, the longitudinal groove structures 23a, 23b The distance between the starting end (that is, the end close to the patient) and the starting point is 5-10 cm.

The material of the urinary catheter of the present utility model is usually a soft material, which can be made of silica gel-coated latex balls or entirely made of silica gel. Preferably, the material of the present utility model is made of pure silica gel.

The urinary catheter insertion unit of the present invention has no specific limitation, as long as it does not limit the design purpose of the present invention. Specific examples thereof include, but are not limited to: a cannula 11 in contact with the urethral meatus, one or more side holes 12 disposed on the tube wall of the cannula 11 , and a balloon 13 disposed at the end of the cannula 11 .

The intubation tube 11 in the urinary catheter intubation unit of the present utility model can be attached with other elements, as long as there is no restriction on the design purpose of the present utility model. The specific examples include but are not limited to: the catheter intubation 11 is equipped with temperature measuring sensors or electrodes and the like.

The structure and quantity of the side holes 12 in the catheter insertion unit of the utility model are not specifically limited, as long as there is no restriction on the design purpose of the utility model. Urine enters the urine catheter cavity 21 provided in the catheter body 2 through the side hole 12 .

The structure of the balloon 13 in the urinary catheter insertion unit of the present invention is not specifically limited, as long as it does not limit the design purpose of the present invention. In the inflated or liquid-filled state, the balloon wall of the balloon 13 expands so that the balloon 13 presents a convex state, and in the non-inflated or liquid-filled state, the balloon wall of the balloon 13 retracts so that the balloon The capsule 13 is in a flat state.

The number of catheter balloons 13 in the catheter insertion unit of the utility model is not limited, as long as it does not limit the design purpose of the utility model. Specific examples thereof include, but are not limited to, 2 capsules and 3 capsules.

The balloon 13 can be attached with other components, as long as it does not limit the design purpose of the present utility model. Specific examples thereof include but are not limited to: the balloon 13 is equipped with temperature measuring sensors or electrodes and the like.

Urinary catheter cavity 21 and balloon catheter cavity 22 are usually provided in the catheter body 2 of the utility model.

The tube body 2 can be attached with other components, as long as it does not limit the design purpose of the present utility model. The specific examples include but are not limited to: the tube body 2 is equipped with temperature measuring sensors or electrodes and the like.

The structure and cross-sectional area of the urine conduit cavity 21 are not specifically limited, as long as they do not limit the design purpose of the present utility model. Specific examples include but are not limited to: in a double-tube urinary catheter, the urine catheter cavity 21 is a drainage cavity. Or, in the three-tube type urinary catheter, the urine catheter cavity 21 contains two cavities, one cavity is a liquid discharge cavity, and the other cavity is a liquid intake cavity, and the liquid discharge cavity and the liquid intake A partition wall is provided between the cavities.

The structure and cross-sectional area of the balloon catheter cavity 22 are not specifically limited, as long as they do not limit the design purpose of the present invention.

The urinary catheter interface unit of the utility model has no specific limitation, as long as it does not limit the design purpose of the utility model. Its specific example includes but not limited to: the catheter interface unit 3, the catheter interface unit 3 includes a catheter interface 31 communicated with the urine catheter cavity 21 and a catheter interface connected with the balloon catheter cavity 22 A connected branch pipe 32, and a check valve 33 is arranged on the pipe body of the branch pipe 32.

More specifically, in the double-tube urinary catheter, the urinary catheter structure 31 is a single-tube structure; during use, the urine enters the urinary catheter structure 31 through the urine catheter cavity 21 to be collected.

Or, in the three-tube urinary catheter, the catheter interface 31 is a double-tube structure; and the urine catheter cavity 21 contains two cavities, one cavity is a drainage cavity, and the other cavity It is a liquid inlet chamber (for example, a flushing catheter cavity or a guide wire installation lumen), and the liquid discharge chamber is connected to one tube in the double-tube structure of the catheter interface 31; the liquid inlet chamber is connected to the other pipe (also That is, other structures such as flushing holes or wire mounting holes corresponding to the aforementioned flushing catheter cavity or wire mounting lumen). In use, the use of the liquid discharge chamber is similar to that of the double-pipe type; and the liquid inlet chamber is used for injecting liquid into the patient's body.

Below in conjunction with specific embodiment, further illustrate the utility model. It should be understood that these embodiments are only used to illustrate the present utility model and are not intended to limit the scope of the present utility model. For the experimental methods without specific conditions indicated in the following examples, the conventional conditions or the conditions suggested by the manufacturer are usually followed. Ratios and percentages are by weight unless otherwise indicated.

Unless otherwise defined or stated, all professional and scientific terms used herein have the same meanings as those familiar to those skilled in the art. In addition, any methods and materials similar or equivalent to those described can be applied to the method of the present invention.

Other aspects of the present invention will be apparent to those skilled in the art from the disclosure herein.

Example

Fig. 1 is a schematic structural view of a specific embodiment of the urinary catheter of the present invention, the guiding groove of the urinary catheter in this embodiment is composed of two longitudinal groove structures 23a, 23b. Fig. 1 also includes a cross-section 4 of the urinary catheter, please refer to Fig. 2 for a schematic diagram of the specific structure of the cross-section 4 .

As shown in Figure 1, the silicone balloon catheter is equipped with:

Catheter intubation unit 1, the catheter intubation unit 1 has a cannula 11 in contact with the urethral opening, a side hole 12 arranged on the tube wall of the cannula 11, and a side hole 12 arranged on the cannula 11 Balloon 13 at the end.

The urinary catheter body 2 connected with the catheterization unit 1 of the urinary catheter, the catheter body 2 is provided with a urine catheter cavity 21 and a balloon catheter cavity 22 inside.

A catheter interface unit 3 connected to the catheter body 2, the catheter interface unit 3 is provided with a catheter interface 31 communicated with the urine catheter cavity 21 and connected to the balloon catheter cavity. A branch pipe 32 communicated with the cavity 22, and a check valve 33 is arranged on the pipe body of the branch pipe 32. A guide groove 23 is provided on the outer surface of the catheter body 2 for guiding secretions caused by urinary tract infection or injury. The length of the guide groove 23 is consistent with the length of the catheter body 2 .

The surface of the cannula 11 is slightly arc-shaped, and its surface can also be coated with lubricating oil so as to reduce pain when inserted into the urethral opening.

Side hole 12 is arranged on the tube wall of intubation tube 11, and this side hole 12 communicates with a lumen (urine catheter cavity 21) in tube body 2, so that urination is kept unobstructed during the treatment process.

The balloon 13 communicates with another lumen (balloon catheter cavity 22) in the tube body 2. After the intubation tube 11 is inserted into the user's urethra, the balloon 13 is filled to position the intubation tube 11 in the urethra, which can be used clinically. Inject a specified amount of sterile water into the balloon 13 to fill the balloon 13 to achieve the positioning function. As shown in FIG. 1 , the balloon 13 is inflated for clarity.

The urine catheter cavity 21 is used to discharge the urine collected from the side hole 12 to the catheter interface 31 .

The cavity 22 of the balloon catheter forms a channel communicating with the balloon 13, so that a prescribed amount of sterile water or gas can be injected from the branch tube 32 into the balloon 13 for positioning.

The catheter interface 31 is connected with a catheter container (such as a catheter bag, not shown in the figure), and the urine passes through the side hole 12 and the urine catheter cavity 21 in the tube body 2, and then passes through the urine catheter cavity. The lumen 21 flows out from the catheter interface 31 into the catheter container.

The branch pipe 32 communicates with the balloon catheter cavity 22 in the catheter interface unit; in clinical use, the branch pipe 32 injects a specified amount of sterile water into the balloon 13 through the balloon catheter cavity 22 of the catheter body 2 or gas to fill the balloon 13 to achieve the positioning function.

The effect of check valve 33 is to prevent the sterile water in the branch pipe 32 from flowing backward.

FIG. 2 is an enlarged schematic view of the cross section 4 in FIG. 1 . As shown in Figure 2, the guide groove 23 is composed of two longitudinal groove structures 23a, 23b, and the axes of the longitudinal groove structures 23a, 23b are in line with the axis of the urine catheter cavity 21, the balloon The axes of the catheter lumens 22 are parallel to each other. The distance between the axis of the longitudinal groove structure 23a or 23b and the axis of the urine catheter cavity 21 is a first distance; The axes have a second pitch; the first and second pitches are substantially equal. It can also be seen from FIG. 2 that the cross section of the guide groove 23 is arc-shaped.

The longitudinal groove structures 23a, 23b form an arc-shaped cavity, and in clinical use, secretions between the urinary catheter and the urethral mucosa are discharged through this arc-shaped cross-sectional structure.

This example works like this:

First place the catheter indwelling: at this time, insert the catheter 11 of the catheter into the urethra, and the depth of insertion depends on the length of the urethra of each patient. Inflate the balloon 2; gently pull the catheter body 2, so that the balloon 13 is in full contact with the bladder; then insert the syringe into the check valve 33 to retract the balloon 13, so that the catheterization unit 1 is in the patient's body place a lien;

After indwelling, the side hole 12 of the urinary catheter collects urine, the urine enters the cavity 21 of the urinary catheter, and then collects from the interface 31 of the urinary catheter. Container devices (not shown in the figure) such as a urinary catheter bag can also be connected to the above-mentioned urinary catheter interface 31 .

When there is secretion between the urinary catheter and the urethral mucosa (usually the secretion is unavoidable), the secretion can be discharged along the grooves 23a, 23b of the catheter tube body, or the secretion can be discharged from the urethra by squeezing the urethra. The grooves 23a, 23b of the tube body are discharged.

The guide groove 23 is integrally completed when the conduit is formed, and is suitable for solid glue, liquid glue and all vulcanization systems.

All documents mentioned in this application are incorporated by reference in this application as if each were individually incorporated by reference. In addition, it should be understood that after reading the above teaching content of the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the appended claims of the application.

Claims (10)

1. A silicone balloon catheter, comprising: A urinary catheter insertion unit (1), the urinary catheter insertion unit comprises a insertion tube (11) in contact with the urethral opening, one or more side holes (12) arranged on the tube wall of the insertion tube (11) ), and a balloon (13) arranged at one end of the cannula (11); A catheter body (2), the catheter body (2) is provided with a urine catheter cavity (21) and a balloon catheter cavity (22); A catheter interface unit (3), the catheter interface unit (3) includes a catheter interface (31) communicated with the urine catheter cavity (21) and a catheter interface (31) connected to the balloon catheter cavity ( 22) a connected branch pipe (32), the body of the branch pipe (32) is provided with a check valve (33); It is characterized in that, A guide groove (23) is provided on the outer surface of the catheter tube body (2) for guiding secretions caused by urinary tract infection or injury. 2. catheter according to claim 1, is characterized in that: The guide groove (23) is composed of two or more than two groove structures. 3. The urinary catheter according to claim 2, characterized in that: The guide groove (23) is composed of two longitudinal groove structures (23a), (23b), And the axis of the longitudinal groove structure (23a), (23b) is parallel to the axis of the urine catheter cavity (21) and the axis of the balloon catheter cavity (22). 4. catheter according to claim 3, is characterized in that: The axis of the longitudinal groove structure (23a) or (23b) has a first distance from the axis of the urine conduit cavity (21); The axis of the longitudinal groove structure (23a) or (23b) has a second distance from the axis of the balloon catheter cavity (22); The first distance and the second distance are substantially equal. 5. The urinary catheter according to claim 1, characterized in that: the cross-section of the guide groove (23) is arc-shaped or semicircular. 6. The urinary catheter according to claim 1, characterized in that: the cross-sectional area of the guide groove (23) accounts for 10% to 30% of the cross-sectional area of the catheter body (2). 7. The catheter according to claim 1, characterized in that: the length of the guide groove (23) is consistent with the length of the catheter body (2). 8. The urinary catheter according to claim 1, characterized in that: the length of the guide groove (23) is 1/2 to 9/10 of the length of the catheter body (2). 9. The urinary catheter according to claim 8, characterized in that: the distance between the starting end of the guide groove (23) and the contact end of the cannula (11) and the urethral opening is 5-10 cm. 10. The urinary catheter according to claim 1, characterized in that: the silicone balloon urinary catheter is a double-tube or triple-tube urinary catheter.