CN111939344A

CN111939344A - Urethral catheterization device used in urinary surgery

Info

Publication number: CN111939344A
Application number: CN202010833821.9A
Authority: CN
Inventors: 龙清志; 曾津; 张露
Original assignee: First Affiliated Hospital of Medical College of Xian Jiaotong University
Current assignee: First Affiliated Hospital of Medical College of Xian Jiaotong University
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2020-11-17

Abstract

The invention relates to the technical field of medical appliances, and discloses a urethral catheterization device used in a urological operation, which comprises: the pipe, the upper portion terminal surface of pipe is the convex surface, and the convex surface middle part is equipped with the round hole, can dismantle in the pipe to be equipped with the thrust unit who is used for promoting the pipe upper end to go forward, thrust unit includes: the push pipe is a flexible metal pipe and is detachably arranged in the guide pipe, a spherical convex surface is arranged at the front end of the push pipe, a plurality of second through holes are formed in the spherical convex surface, the spherical convex surface penetrates through the circular hole and protrudes out of the guide pipe, and the lower part of the push pipe is detachably connected with a lubricating oil injection device; the lower end of the catheter can be detachably connected with the pipe joint, the pipe joint is detachably connected with the urine collecting bag through the pipeline, and the urethral catheterization device used in the urinary surgery reduces the advancing resistance of the catheter, lightens the discomfort of a patient when the catheter is inserted, is favorable for transmitting the thrust to the front end of the catheter, ensures that the catheter can smoothly reach the bladder, and ensures that the operation is smoothly carried out.

Description

Urethral catheterization device used in urinary surgery

Technical Field

The invention relates to the technical field of medical appliances, in particular to a urethral catheterization device used in a urological operation.

Background

Before or during urinary surgery on a patient in urology department, the catheterization device is required to be communicated with the bladder of the patient for catheterization, however, when the existing catheterization device enters the human body and particularly touches a curve, the front end cannot automatically change the direction, and only the thrust of the rear end can be relied on.

However, the existing catheter is a hose, the pushing force is difficult to transfer to the front end, the front end continuously rubs with the urethra of a human body, the advancing resistance is large, the bladder cannot be smoothly reached, the pain and the discomfort of a patient are brought, or the operation time is prolonged, and the operation risk is brought.

Disclosure of Invention

The invention provides a urethral catheterization device used in urinary surgery, which reduces the resistance of advancing of a catheter, relieves the discomfort of a patient when the catheter is inserted, and is beneficial to transmitting thrust to the front end of the catheter so that the catheter can smoothly reach the bladder.

The present invention provides a urinary catheterization device for use in urinary surgery, comprising: the pipe, the upper portion of pipe is equipped with first conducting hole and location gasbag, and first conducting hole is located the top of location gasbag, its characterized in that, the upper portion terminal surface of pipe is the convex surface, and the convex surface middle part is equipped with the round hole, can dismantle in the pipe to be equipped with the thrust unit who is used for promoting the pipe upper end to go forward, thrust unit includes:

the push pipe is a flexible metal pipe and is detachably arranged in the guide pipe, a spherical convex surface is arranged at the front end of the push pipe, a plurality of second through holes are formed in the spherical convex surface, the spherical convex surface penetrates through the circular hole and protrudes out of the guide pipe, and the lower part of the push pipe is detachably connected with a lubricating oil injection device;

the lubricating oil injection device is positioned outside the guide pipe and used for injecting lubricating oil into the push pipe;

the lower end of the catheter is detachably connected with a pipe joint, and the pipe joint is connected with a urine collection bag through a pipeline.

The lubricating oil injection device includes:

the upper end of the injection needle is inserted into the push tube, and the lower end of the injection needle is fixed on the lubricating oil tube and communicated with the interior of the lubricating oil tube;

the threaded sleeve is provided with internal threads, the lower end of the threaded sleeve is fixed on the upper end face of the lubricating oil pipe, the threaded sleeve is positioned on the circumferential outer side of the injection needle head, first external threads are arranged on the outer side face of the lower portion of the push pipe, and the threaded sleeve is detachably connected with the lower portion of the push pipe through the internal threads and the first external threads;

a lubricating oil pipe, wherein lubricating oil is filled in the lubricating oil pipe;

the piston is positioned in the lubricating oil pipe, is arranged below the lubricating oil, has an end surface matched with the internal dimension of the lubricating oil pipe, and can move up and down along the lubricating oil pipe;

the upper end of the piston rod is fixed on the lower end surface of the piston, and the lower end of the piston rod penetrates through the lubricating oil pipe and is connected with the upper end of the handle;

and the handle is positioned outside the lubricating oil pipe.

The lubricating oil pipe is provided with a threaded hole, the piston rod is provided with a second external thread corresponding to the threaded hole, and the piston rod is in threaded connection with the lubricating oil pipe through the second external thread and the threaded hole.

The guide pipe is characterized in that a limiting ring is arranged on the inner side face of the upper end of the guide pipe, a boss is arranged on the outer side of the front end of the push pipe, the boss is located on the circumferential outer side of the spherical convex face, and the limiting ring is located above the boss.

A plurality of arc-shaped protrusions are arranged on the spherical convex surface, and the second via holes are formed between the adjacent arc-shaped protrusions.

The lateral wall of the conduit is provided with a water injection interface which is communicated with the lower end of the channel, and the water injection interface is detachably provided with a plugging head.

The outer wall of the catheter is provided with an annular groove, and the positioning air bag is arranged in the annular groove.

The pipe joint is a three-way pipe joint, the upper end of the pipe joint is detachably connected with the lower end of the guide pipe, and the two lower ends of the pipe joint are correspondingly connected with a first connecting pipe and a second connecting pipe;

the first connecting pipe is used for catheterization and is fixedly connected with the upper end of the pipeline, and a first control switch is arranged on the first connecting pipe;

the second connecting pipe is detachably connected with the flushing fluid device, and a second control switch is arranged on the second connecting pipe.

Compared with the prior art, the invention has the beneficial effects that:

the invention improves the catheter, the round hole is arranged at the front end of the catheter, the push tube is inserted into the catheter and is a flexible metal tube, the transmission of the push force to the front end of the catheter is facilitated, so that the front end of the catheter can smoothly reach the bladder, the front end of the push tube is provided with the spherical convex surface which penetrates through the round hole at the front end of the catheter and protrudes out of the catheter, the spherical convex surface is provided with a plurality of second through holes, the lower end of the push tube is connected with the lubricating oil injection device, lubricating oil is injected into the push tube through the lubricating oil injection device and is continuously injected, so that the lubricating oil at the rear part pushes the lubricating oil at the front part to finally be discharged from the second through holes at the spherical convex surface to enter the urethra at the front end of the catheter, the friction between the front end of the catheter and the urethra of a human body is reduced by the lubricating oil, ensuring the smooth operation.

The invention improves the prior catheter, the lower end of the catheter is detachably connected with the pipe joint, and the pipe joint is detachably connected with the urine collection bag through the pipeline, so that the push pipe is inserted into the catheter before the catheter enters the bladder, and after the catheter enters the bladder, the push pipe is pulled out and then is connected with the urine collection bag for urine collection.

Drawings

Fig. 1 is a schematic structural view of a urinary surgery catheterization device inserted into a push tube.

Fig. 2 is a schematic view showing the overall structure of a urinary catheter used in urinary surgery according to the present invention.

Fig. 3 is a schematic structural view of the upper part of a push tube of a urinary catheter used in urinary surgery.

Fig. 4 is a schematic structural view of an upper portion of a push tube of a urinary catheter device according to an embodiment of the present invention.

Description of reference numerals:

1-catheter, 2-first conducting hole, 3-positioning air bag, 4-channel, 5-pipe joint, 6-pipeline, 7-water injection interface, 8-blocking head, 9-urine collection bag, 10-limiting ring, 11-lubricating oil, 12-round hole, 13-arc bulge, 14-second conducting hole, 15-spherical convex surface, 16-round hole, 17-push pipe, 18-lower section, 19-injection needle head, 20-thread sleeve, 21-lubricating oil pipe, 22-piston, 23-piston rod and 24-handle.

Detailed Description

An embodiment of the present invention will be described in detail below with reference to fig. 1-4, but it should be understood that the scope of the present invention is not limited to the embodiment.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing technical solutions of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 to 3, an embodiment of the present invention provides a urinary catheter, including: pipe 1, the upper portion of pipe 1 is equipped with first via hole 2 and location gasbag 3, and first via hole 2 is located the top of location gasbag 3, its characterized in that, the upper portion terminal surface of pipe 1 is the convex surface, and the convex surface middle part is equipped with round hole 12, can dismantle in the pipe 1 to be equipped with the thrust unit who is used for promoting 1 upper ends of pipe to go forward, thrust unit includes:

the push pipe 17 is a flexible metal pipe and is detachably arranged in the guide pipe 1, a spherical convex surface 15 is arranged at the front end of the push pipe 17, a plurality of second through holes 14 are formed in the spherical convex surface 15, the spherical convex surface 15 penetrates through the round hole 12 and protrudes out of the guide pipe 1, and the lower part of the push pipe 17 is detachably connected with a lubricating oil injection device;

the lubricating oil injection device is positioned outside the guide pipe 1 and used for injecting lubricating oil 11 into the push pipe 17;

the lower end of the catheter 1 is detachably connected with a pipe joint 5, and the pipe joint 5 is connected with a urine collection bag 9 through a pipeline 6.

The use method and the working principle are as follows:

the channel 4 communicated with the positioning air bag 3 is arranged in the pipe wall of the catheter 1, so that the push pipe can be conveniently pulled out, and the phenomenon that the pull-out of the push pipe 17 is influenced by arranging the channel in the catheter 1 is avoided.

The push tube 17 comprises an upper section and a lower section, the upper section has a larger diameter, the lower section 18 has a smaller diameter, and the first via hole is located in the lower section 18 of the push tube 17.

The flexible metal pipe is a stainless steel metal hose or a metal corrugated hose.

Slowly promote the front end of pipe 1 through push tube 17, make the front end of pipe 1 advance along the urethra, use lubricating oil injection device to inject lubricating oil into push tube 17 simultaneously, under the promotion of lower lubricating oil, lubricating oil on upper portion spills over spherical convex surface 15 from a plurality of second via holes 14 in the push tube 17, spherical convex surface 15 is at the inner wall of the coating of lubricating coating at human urethra of the in-process that gets into urethra and urethra contact, lubricating oil has reduced the friction between pipe 1 front end and the human urethra, the resistance that pipe 1 gos forward has been reduced, patient's uncomfortable sense when having alleviateed insert pipe 1.

Under the pushing of the catheter 1 by the pushing tube 17, the pushing force is favorably transmitted to the front end of the catheter 1, so that the front end of the catheter 1 smoothly reaches the bladder.

After the urine reaches the bladder, the urine enters the space between the catheter 1 and the push tube 17 through the first conducting hole 2, and flows out of the catheter 1, at the moment, the push tube 1-2 cm is continuously pushed, so that the positioning air bag 3 enters the bladder, water is injected through the water injection interface 7, water enters the positioning air bag 3 through the channel 4, the positioning air bag 3 expands, the bladder opening is blocked, after the water injection is completed, the catheter 1 is fixed on one hand, the catheter 1 is prevented from being pulled, the push tube 17 is slowly pulled out of the catheter 1 on the other hand, the upper end of the pipe joint 5 is connected with the lower end of the catheter 1 after the push tube 17 is pulled out, the lower end of the pipe joint 5 is connected with the urine collection bag 9 through the pipeline 6, and the urine is prevented from flowing out.

In order to avoid damaging the urethra when the front end edge of the catheter 1 is in contact friction with the urethra, the upper end face of the catheter 1 is a convex face, the front end of the push tube 17 is provided with a spherical convex face 15, and the convex face and the spherical convex face do not have the edge, so that the urethra cannot be damaged.

In order to facilitate the injection of the lubricant into the push pipe 17, the lubricant injection device includes:

the upper end of the injection needle 19 is inserted into the push tube 17, and the lower end of the injection needle is fixed on the lubricating oil tube 21 and communicated with the inside of the lubricating oil tube 21;

the threaded sleeve 20 is provided with internal threads, the lower end of the threaded sleeve is fixed on the upper end face of the lubricating oil pipe 21, the threaded sleeve 20 is located on the circumferential outer side of the injection needle 19, a first external thread is arranged on the outer side face of the lower portion of the push pipe 17, and the threaded sleeve 20 is detachably connected with the lower portion of the push pipe 17 through the internal threads and the first external thread;

a lubricating oil pipe 21 filled with lubricating oil;

a piston 22 located in the lubricating oil pipe 21, disposed below the lubricating oil, having an end surface matched with the inner dimension of the lubricating oil pipe 21, and capable of moving up and down along the lubricating oil pipe 21;

a piston rod 23, the upper end of which is fixed on the lower end surface of the piston 22, and the lower end of which passes through the lubricating oil pipe 21 and is connected with the upper end of the handle 24;

and a handle 24 positioned outside the lubricating oil pipe 21.

The using method comprises the following steps: the piston 22 is pushed by a handle 24 and a piston rod 23, the piston 22 pushes lubricating oil above the lubricating oil pipe 21, the lubricating oil is injected into the push pipe 17 through the injection needle 19, and the lubricating oil in the push pipe 17 is pushed to move upwards.

Is convenient to use.

In order to position the piston rod 23 and prevent the piston rod from moving when pushing the push tube 17, a threaded hole is formed in the lubricating oil tube 21, a second external thread corresponding to the threaded hole is formed in the piston rod 23, and the piston rod 23 is in threaded connection with the lubricating oil tube 21 through the second external thread and the threaded hole.

Through the external screw thread on screw hole and the piston rod 23, can fix a position piston rod 23, avoid piston rod 23 to remove the calculation that influences the pushing-in amount of lubricating oil.

In order to control the amount of lubricant that is pushed in, the piston rod 23 is provided with length scales.

In order to position the push pipe 17 and avoid the push pipe 17 from expanding the circular hole 12 when pushing the guide pipe 1 to affect the movement of the front end of the guide pipe 1, the inner side surface of the upper end of the guide pipe 1 is provided with the limit ring 10, the outer side of the front end of the push pipe 17 is provided with the boss 16, the boss 16 is located on the circumferential outer side of the spherical convex surface 15, and the limit ring 10 is located above the boss 16.

The position of the push tube 17 is defined by the stop collar 10 and boss 16 to facilitate advancement of the catheter 1 in the urethra.

In order to avoid the injury to the urethra when the edges of the second through holes 14 contact with the urethra, as shown in fig. 4, a plurality of arc-shaped protrusions 13 are provided on the spherical convex surface 15, and the second through holes 14 are provided between adjacent arc-shaped protrusions 13.

By disposing the plurality of second via holes 14 on the concave surface between the adjacent arc-shaped protrusions 19, the plurality of second via holes 14 can be prevented from directly contacting the urethra, and thus the urethra can be prevented from being damaged by the contact with the urethra.

And a water injection connector 7 is arranged on the side wall of the conduit 1, the water injection connector 7 is communicated with the lower end of the channel 4, and a blocking head 8 is detachably arranged on the water injection connector 7.

In order to timely position the catheter after the front end of the catheter 1 enters the bladder and avoid the failure of catheterization caused by the fact that the catheter is driven to leave the bladder when the push tube is pulled out, a water injection interface 7 is arranged on the side wall of the catheter 1, the water injection interface 7 is communicated with the lower end of the channel 4, a blocking head 8 is detachably arranged on the water injection interface 7, water is injected into the positioning air bag 3 through the water injection interface 7 and the channel 4 after the front end of the catheter 1 enters the bladder, the catheter 1 is positioned through the positioning air bag 3, the position of the catheter 1 is not affected when the push tube 17 is pulled out, and the smooth operation is facilitated.

In order to reduce the frictional resistance to the urethra generated by the positioning air bag in the process of entering the urethra or in the process of exiting the urethra after water pumping, the outer wall of the catheter 1 is provided with an annular groove, the positioning air bag 3 is arranged in the annular groove, and the positioning air bag 3 is contracted in the annular groove when no water exists, so that the volume of the positioning air bag 3 can be reduced, the frictional resistance to the urethra is reduced, and the discomfort of a patient is relieved.

In order to facilitate urination and flushing the bladder, the pipe joint 5 is a three-way pipe joint, the upper end of the pipe joint is detachably connected with the lower end of the catheter 1, and the two lower ends of the pipe joint 5 are correspondingly connected with a first connecting pipe and a second connecting pipe;

the first connecting pipe is used for catheterization and is fixedly connected with the upper end of the pipeline 6, and a first control switch is arranged on the first connecting pipe;

Close the second control switch, open first control switch and realize urinating, connect washing unit with the second connecting pipe, close first control switch, open second control switch, realize washing the bladder, the going on smoothly of the urological surgery of being convenient for.

The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.

Claims

1. A urinary surgical catheterization apparatus, comprising: pipe (1), the upper portion of pipe (1) is equipped with first conducting hole (2) and location gasbag (3), and first conducting hole (2) are located the top of location gasbag (3), its characterized in that, the upper portion terminal surface of pipe (1) is the convex surface, and the convex surface middle part is equipped with round hole (12), can dismantle in pipe (1) to be equipped with the thrust unit who is used for promoting pipe (1) upper end to advance, thrust unit includes:

the push pipe (17) is a flexible metal pipe and is detachably arranged in the guide pipe (1), a spherical convex surface (15) is arranged at the front end of the push pipe (17), a plurality of second through holes (14) are formed in the spherical convex surface (15), the spherical convex surface (15) penetrates through the round hole (12), the spherical convex surface protrudes out of the guide pipe (1), and the lower part of the push pipe (17) is detachably connected with a lubricating oil injection device;

the lubricating oil injection device is positioned outside the guide pipe (1) and used for injecting lubricating oil (11) into the push pipe (17);

the lower end of the catheter (1) is detachably connected with a pipe joint (5), and the pipe joint (5) is connected with a urine collection bag (9) through a pipeline (6).

2. The urinary surgical catheterization device of claim 1, wherein said lubricant injection means includes:

the upper end of the injection needle (19) is inserted into the push pipe (17), and the lower end of the injection needle is fixed on the lubricating oil pipe (21) and communicated with the inside of the lubricating oil pipe (21);

the threaded sleeve (20) is provided with an internal thread, the lower end of the threaded sleeve is fixed on the upper end face of the lubricating oil pipe (21), the threaded sleeve (20) is located on the circumferential outer side of the injection needle (19), a first external thread is arranged on the outer side face of the lower portion of the push pipe (17), and the threaded sleeve (20) is detachably connected with the lower portion of the push pipe (17) through the internal thread and the first external thread;

a lubricating oil pipe (21) filled with lubricating oil;

the piston (22) is positioned in the lubricating oil pipe (21), is arranged below the lubricating oil, has an end surface matched with the inner size of the lubricating oil pipe (21), and can move up and down along the lubricating oil pipe (21);

the upper end of the piston rod (23) is fixed on the lower end surface of the piston (22), and the lower end of the piston rod penetrates through the lubricating oil pipe (21) and is connected with the upper end of the handle (24);

and the handle (24) is positioned outside the lubricating oil pipe (21).

3. The urinary surgery urinary catheter device as claimed in claim 2, wherein the lubricating oil tube (21) is provided with a threaded hole, the piston rod (23) is provided with a second external thread corresponding to the threaded hole, and the piston rod (23) is threadedly engaged with the lubricating oil tube (21) through the second external thread and the threaded hole.

4. The urinary surgery catheterization device of claim 1, wherein the catheter (1) is provided with a limiting ring (10) on the inner side surface of the upper end thereof, the pushing tube (17) is provided with a boss (16) on the outer side of the front end thereof, the boss (16) is located on the outer circumferential side of the spherical convex surface (15), and the limiting ring (10) is located above the boss (16).

5. The urinary surgery urinary catheterization device of claim 1, wherein the convex spherical surface (15) is provided with a plurality of arc-shaped protrusions (13), and the second through holes (14) are arranged between adjacent arc-shaped protrusions (13).

6. The urinary surgery urinary catheterization device of claim 1, wherein the side wall of the catheter (1) is provided with a water filling port (7), the water filling port (7) is communicated with the lower end of the channel (4), and the water filling port (7) is detachably provided with a blocking head (8).

7. Urinary surgery device as claimed in claim 1, characterized in that the catheter (1) is provided with an annular groove in its outer wall, in which the positioning balloon (3) is arranged.

8. The urinary surgery urinary catheterization device of claim 1, wherein the adapter (5) is a three-way adapter, the upper end of which is detachably connected to the lower end of the catheter (1), and the two lower ends of the adapter (5) are correspondingly connected to the first connecting tube and the second connecting tube;

the first connecting pipe is used for catheterization and is fixedly connected with the upper end of the pipeline (6), and a first control switch is arranged on the first connecting pipe;