CN110215543B - Medical guidable catheter - Google Patents

Abstract

The invention provides a medical guidable catheter, relates to the technical field of medical instruments, can improve the success rate and efficiency of catheterization and solve the problem of injury to urethra caused by repeated catheterization; the urinary catheter comprises: a guide means for guiding when the catheter is inserted into the human body; a urination device for discharging urine in the bladder; a fixation device for fixing the catheter in the human body; the flushing device is used for flushing water into the body; the urinary catheter main body is used for assembling other devices of the urinary catheter into a whole; the guiding device comprises a guide wire channel which is arranged in the ureter main body in a penetrating way; the outer end of the guide wire channel is provided with a sealing cap which is hermetically connected with the guide wire channel, and the middle of the sealing cap is provided with a small hole for the guide wire to pass through; and a guide wire outlet hole is formed at the inner end of the guide wire channel. The technical scheme provided by the invention is suitable for the insertion process of the urinary catheter when the anatomical structure of the urethra is changed.

Description

A medical guide catheter

【Technical field】

The invention relates to the technical field of medical instruments, in particular to a medical guideable urinary catheter.

【Background technique】

Trauma, resection of the prostate, radical prostatectomy and other factors can lead to changes in the urethral anatomy, or even rupture of the urethra; since the existing catheters have no guiding function, they are basically blindly inserted into the urethra. , Blind catheterization is easy to aggravate the injury of the urethra or form a blind urethra, increasing the pain of the patient.

[Content of the invention]

In view of this, the present invention provides a medical guideable catheter, which uses a guide wire to guide the insertion of the catheter, which can improve the success rate and efficiency of the catheter, and solve the problem of damage to the urethra caused by multiple catheterization.

In one aspect, the present invention provides a medical guideable urinary catheter, characterized in that the urinary catheter comprises:

a guiding device for guiding when the urinary catheter is inserted into the human body;

A voiding device, which is used to remove urine from the bladder;

a fixing device for fixing the urinary catheter in the human body;

The main body of the urinary catheter is used to assemble other devices of the urinary catheter into one.

In the above aspect and any possible implementation, an implementation is further provided, wherein the guiding device includes a guide wire channel passing through the main body of the urinary catheter; the external end of the guide wire channel is provided with the same The sealing cap is sealed and connected, and the middle of the sealing cap is provided with a small hole for the guide wire to pass through; the inner end of the guide wire channel is provided with a guide wire outlet hole.

In the above aspect and any possible implementation, an implementation is further provided, wherein the guide wire outlet hole and the internal end port of the urinary catheter body are the same port, have an oval shape, and are located on the ventral side of the port .

In the above aspect and any possible implementation, an implementation is further provided, wherein the urination device includes a urination conduit that is pierced in the main body of the urethra; the external end of the urination conduit is provided with a urine outlet , the end of the body is provided with a urine inlet hole.

The above-mentioned aspect and any possible implementation manner further provide an implementation manner, wherein the urine inlet hole includes a first urine inlet hole and a second urine inlet hole, the first urine inlet hole and the second urine inlet hole The urine inlet holes are arranged on both sides of the main body of the urinary catheter; the first urine inlet hole and the second urine inlet hole are both elliptical and communicate with each other.

According to the above aspect and any possible implementation manner, an implementation manner is further provided, wherein the distance between the position of the urine inlet hole and the inner end port of the urinary catheter body is 1.5cm-2.5cm.

The above aspects and any possible implementation manners further provide an implementation manner, wherein the fixing device comprises a balloon water injection pipe penetrated in the urinary catheter main body and a water injection pipe wrapped in the inner end of the urinary catheter main body. A balloon; the balloon is communicated with the balloon water injection pipeline, and the external end of the balloon water injection pipeline is provided with a balloon valve for controlling the start and stop of water injection.

In the above aspect and any possible implementation, an implementation is further provided, wherein the balloon is circular or elliptical, and the distance between the position of the balloon and the internal end port of the urinary catheter body is 3cm -5cm; the material of the balloon is elastic.

According to the above aspects and any possible implementations, an implementation is further provided, wherein the urinary catheter further includes a flushing device; the flushing device includes a flushing pipe penetrated in the main body of the urinary catheter The inner end of the flushing pipe is communicated with the urine inlet hole, and the outer end is connected with a water bag.

Aspects and any possible implementations as described above further provide an implementation, wherein all or part of the guiding device, the urination device, the fixing device and the urinary catheter body are made of a water-smooth flexible material production.

According to the above aspect and any possible implementation manner, an implementation manner is further provided, wherein the diameter of the conduit of the guide wire channel is 1.67 mm; the diameter of the balloon perpendicular to the direction of the urinary catheter is 1 cm.

Compared with the prior art, the present invention can obtain the following technical effects: the urinary catheter is suitable for patients whose urethral anatomy is changed due to factors such as trauma, resection of the prostate, radical prostatectomy, etc., which improves the success of intubating the urinary catheter. The rate and efficiency are solved, and the problem of damage to the urethra caused by multiple urinary catheters is solved.

Of course, any product implementing the present invention does not necessarily need to achieve all the above-mentioned technical effects at the same time.

【Description of drawings】

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1 is a schematic structural diagram of a medical guideable urinary catheter provided by an embodiment of the present invention;

Fig. 2 is a use diagram of a medical guideable urinary catheter provided by an embodiment of the present invention.

Among them, in the figure:

1. Balloon valve; 2. Balloon water injection pipe; 3. Balloon; 4. Urine outlet; 5. Water flushing port; 6. Sealing cap; 7. Guide wire channel; 8. Urinary pipe; 9. Flush pipe 10, the main body of the urinary catheter; 11, the first urine inlet hole; 12, the second urine inlet hole; 13, the guide wire outlet hole; 14, the guide wire.

【Detailed ways】

In order to better understand the technical solutions of the present invention, the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

It should be understood that the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise.

FIG. 1 is a schematic structural diagram of a medical guideable urinary catheter provided by an embodiment of the present invention. As shown in Fig. 1, the medical guide catheter includes a balloon valve 1, a balloon water injection pipe 2, a balloon 3, a urine outlet 4, a flushing port 5, a sealing cap 6, a guide wire channel 7, a urine pipe 8, The flushing pipe 9, the main body 10 of the urinary catheter, two urine inlet holes (ie the first urine inlet hole 11 and the second urine inlet hole 12), and one guide wire outlet hole 13; the main body 10 of the urinary catheter is a hollow cylindrical tubular structure , the diameter of the main body 10 of the urinary catheter can be F14, F16, F18, F20, F22, F24, etc. (F14=4.7mm, F16=5.3mm, F18=6.0mm, F20=6.7mm, F22=7.3mm, F24=8.0mm ). The balloon water injection pipe 2, the urination pipe 8, the guide wire channel 7 and the flushing pipe 9 are all hollow tubular structures, and are all collected at the external end of the urinary catheter main body 10, and are respectively penetrated inside the urinary catheter main body 10, The sizes of the balloon water injection pipe 2, the urination pipe 8 and the flush pipe 9 can be matched according to the size of the urinary catheter body 10, and the pipe diameter of the guide wire channel 7 can be F5=1.67mm. Among them, the balloon water injection pipe 2, the urination pipe 8 and the flushing pipe 9 are arranged in sequence and collected at the outer port of the urinary catheter main body 10, and the connection of the four is located on the same plane; the outer end of the guide wire channel 7 is provided with The sealing cap 6 for sealing connection, the sealing cap 6 is made of elastic rubber material, and a small hole is arranged in the middle; when the guide wire channel 7 is connected with the main body 10 of the urinary catheter, there is a certain angle between the two pipes, that is, the connection between the guide wire channel 7 and the urethra main body 10 have a certain angle. There is a certain angle between the front connecting planes, and the angle is 30°-90°.

A guide wire outlet hole 13 is provided on the ventral side of the end of the inner end of the urinary catheter body 10 , and the guide wire outlet hole 13 is connected to the inner end of the guide wire channel 7 . Preferably, the guide wire outlet hole 13 and the port at the inner end of the urinary catheter body 10 are the same port. The left and right sides of the urinary catheter main body 10 at a distance of 1.5cm-2.5cm (preferably 2cm) from the end are respectively provided with a first urine inlet hole 11 and a second urine inlet hole 12, and the first urine inlet hole 11 and the second urine inlet hole. 12 are all oval, with a diameter of about 5mm, the first urine inlet 11 is connected to the inner end of the urination pipe 8, the second urine inlet 12 is connected to the inner end of the flushing pipe 9, and the first urine inlet 11 It is interconnected with the second urine inlet hole 12, which can increase the amount of water entering and leaving the urine; the external end of the urination pipeline 8 is provided with a urine outlet 4, and the external end of the flushing pipeline 9 is provided with a flushing port 5, and the flushing pipeline 9 can be externally connected. The water bag is used for flushing water inwards, so as to keep the first urine inlet hole 11 and the second urine inlet hole 12 unblocked, and prevent them from being blocked by blood clots and the like. The balloon valve 1 is arranged at the external end port of the balloon water injection pipeline 2, and is used to control the start and stop of the balloon water injection, thereby controlling the water injection amount and the water injection degree. The urethral body 10 is provided with a balloon 3 at a distance of 3cm-5cm (preferably 4cm) from its internal end port, and the balloon 3 wraps the urethral body 10 in a circular shape, and when the balloon 3 is a circle, its diameter is about 1cm, When the balloon 3 is elliptical, its diameter perpendicular to the direction of the urinary catheter is about 1 cm;

The sealing cap 6 is used to seal the opening of the guide wire channel 7 to prevent the urine from flowing out of the bladder when the guide wire is inserted, and at the same time, it can also play the role of fixing the guide wire. The diameter of the guide wire channel 7 should match the diameter of the guide wire, that is, neither too large nor too small, which is beneficial for the guide wire to reach the guide wire outlet hole 13 along the way. The guide wire exit hole 13 is elliptical in shape and is located at the ventral side of the distal end of the urinary catheter body 10 .

The urinary catheter body 10, the guide wire channel 7, the urination pipeline 8 and the flushing pipeline 9 are all soft rubber materials, and the inner and outer surfaces of the urinary catheter body 10, the guide wire channel 7, the urinary pipeline 8 and the flushing pipeline 9 are smooth and can be It is made of high-grade material and can be made of polyamide rubber material, which has the effect of becoming slippery in contact with water. The balloon 3 is also made of rubber material, but requires good elasticity. The guide wire 14 is made of steel, and one end is flexible, and the whole guide The outer layer of the silk is covered with a thin layer of rubber material, which has the effect of becoming slippery in contact with water, thereby ensuring a long service life of the overall catheter, smooth surface, preventing friction on the inner surface, affecting water flow, and preventing the outer surface from rubbing against the patient's skin and wounds .

Fig. 2 is a usage diagram of a medical guideable urinary catheter provided by an embodiment of the present invention. As shown in Fig. 2, when the guide catheter is used, the guide wire 14 is placed in the bladder from the urethra in advance, and then the guide wire 14 is inserted into the guide wire outlet hole 13 of the guide catheter, and the guide wire 14 is inserted along the guide wire channel 7 to To seal the cap 6 , push the main body 10 of the urinary catheter along the guide wire 14 until the urine can be seen to flow out from the urine outlet 4 . About 15-20ml of normal saline is injected into the balloon 3 from the balloon valve 1 , the balloon 3 is inflated, and the main body 10 of the urinary catheter is fixed in the human body, and finally the guide wire 14 is pulled out from the sealing cap 6 . To replace the guide catheter, just insert the guide wire from the sealing cap 6, follow the guide wire channel 7 to the guide wire outlet hole 13, then pull out the guide catheter and insert a new guide wire The steps of the urinary catheter are as above, with the guidance of the guide wire, the insertion of the urinary catheter will be more convenient and safe.

The invention is suitable for patients whose urethral anatomical structure is changed by factors such as trauma, prostate resection, radical prostatectomy, etc., and improves the success rate and efficiency of intubating the urethra, and solves the problem of damage to the urethra caused by repeated intubation.

In this application, "in vivo" and "in vitro" refer to the direction of the urinary catheter when it works, the in vivo end refers to the end inserted into the human body, and the in vitro end refers to the end left outside the body.

The medical guideable urinary catheter provided by the embodiments of the present application has been described in detail above. The description of the above embodiment is only used to help understand the method of the present application and its core idea; meanwhile, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific embodiment and the scope of application, In conclusion, the content of this specification should not be construed as a limitation on the present application.

As certain terms are used in the specification and claims to refer to particular components. It should be understood by those skilled in the art that hardware manufacturers may refer to the same component by different nouns. The present specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of the components as a criterion for distinguishing. As mentioned in the entire specification and claims, "comprising" and "including" are open-ended terms, so they should be interpreted as "including/including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range, and basically achieve the technical effect. Subsequent descriptions in the specification are preferred embodiments for implementing the present application. However, the descriptions are for the purpose of illustrating the general principles of the present application and are not intended to limit the scope of the present application. The scope of protection of this application should be determined by the appended claims.

It should also be noted that the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a commodity or system comprising a list of elements includes not only those elements, but also includes not explicitly listed other elements, or elements inherent to the commodity or system. Without further limitation, an element defined by the phrase "comprising a..." does not preclude the presence of additional identical elements in the article or system that includes the element.

It should be understood that the term "and/or" used in this document is only an association relationship to describe the associated objects, indicating that there may be three kinds of relationships, for example, A and/or B, which may indicate that A exists alone, and A and B exist at the same time. B, there are three cases of B alone. In addition, the character "/" in this document generally indicates that the related objects are an "or" relationship.

The above description shows and describes several preferred embodiments of the present application, but as mentioned above, it should be understood that the present application is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various and other combinations, modifications and environments, and can be modified within the contemplation of the application described herein, using the above teachings or skill or knowledge in the relevant art. However, modifications and changes made by those skilled in the art do not depart from the spirit and scope of the present application, and should all fall within the protection scope of the appended claims of the present application.

Claims (8)

1. A medical guidable urinary catheter, comprising:

a guide means for guiding when the catheter is inserted into the human body;

a urination device for discharging urine in the bladder;

a fixation device for fixing the catheter in the human body;

the urinary catheter main body is used for assembling other devices of the urinary catheter into a whole;

the guiding device comprises a guide wire channel which is arranged in the ureter main body in a penetrating way; the outer end of the guide wire channel is provided with a sealing cap which is hermetically connected with the guide wire channel, and the middle of the sealing cap is provided with a small hole for the guide wire to pass through; a guide wire outlet hole is formed in the inner end of the guide wire channel; the guide wire is made of rigid materials, one end of the guide wire is flexible, and the outer layer of the whole guide wire is coated with a thin layer of rubber material;

the catheter also comprises a flushing device; the flushing device comprises a flushing pipeline which is arranged in the urine pipe main body in a penetrating way; the inner end of the flushing pipe is communicated with the urine inlet, and the outer end of the flushing pipe is connected with a water bag for flushing water inwards so as to keep the urine inlet smooth;

when the urethral catheter is used, the guide wire is firstly placed into a bladder from a urethra, then the guide wire is inserted into the guide wire outlet hole, the seal cap is arranged along the guide wire channel, the urethral catheter main body is pushed into the urine along the guide wire until the urine flows out, and then the guide wire is pulled out from the seal cap; when the catheter is replaced, the guide wire is inserted from the sealing cap again, and then the catheter is pulled out and inserted into a new catheter;

the guide wire outlet hole and the port at the inner end of the body of the ureter main body are the same, oval in shape and located on the ventral side of the port.

2. The medical guidable urinary catheter as set forth in claim 1, wherein said urinary device comprises a urinary conduit disposed through said urinary catheter body; the urine outlet is arranged at the outer end of the urination pipeline, and the urine inlet is arranged at the inner end of the urination pipeline.

3. The medical guidable catheter as set forth in claim 2, wherein said urine inlet holes comprise a first urine inlet hole and a second urine inlet hole, said first urine inlet hole and said second urine inlet hole being provided on both sides of said catheter body; the first urine inlet hole and the second urine inlet hole are oval and communicated with each other.

4. The medical guidable catheter as set forth in claim 3, wherein said urine inlet hole is located at a distance of 1.5cm to 2.5cm from said inner end port of said catheter body.

5. The medical guidable catheter as set forth in claim 1, wherein said fixing means comprises a balloon water injection conduit passing through said catheter body and a balloon wrapped around an inner end of said catheter body; the sacculus with sacculus water injection pipeline intercommunication, the external end of sacculus water injection pipeline is equipped with the sacculus valve that is used for controlling the water injection and opens and stop.

6. The medical guidable catheter as set forth in claim 5, wherein said balloon is circular or elliptical and is positioned at a distance of 3cm to 5cm from the inner end port of said catheter body; the material of the balloon is elastic.

7. The medical guidable urinary catheter as set forth in claim 1, wherein said guiding means, said urination means, said holding means and said catheter body are made entirely or partially of a water-slippery flexible material.

8. The medical guidable catheter as set forth in claim 6, wherein a conduit diameter of said guide wire channel is 1.67 mm; the diameter of the saccule perpendicular to the direction of the catheter is 1 cm.

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