CN211962783U

CN211962783U - Double-layer catheter capable of preventing radial compression

Info

Publication number: CN211962783U
Application number: CN201922497534.0U
Authority: CN
Inventors: 翟才龙
Original assignee: Changzhou Huankang Medical Equipment Co ltd
Current assignee: Changzhou Huankang Medical Equipment Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-11-20
Anticipated expiration: 2029-12-31

Abstract

The utility model relates to the technical field of catheters, in particular to a double-layer catheter for preventing radial compression, which comprises an outer tube and a flow guide tube, wherein the flow guide tube is internally provided with a urethral catheterization channel and a water injection channel, the outer tube is sleeved outside the flow guide tube, a gap is arranged between the inner peripheral wall of the outer tube and the outer peripheral wall of the flow guide tube, when the flow guide tube is injected with sterile water by using the water injection channel to expand an air bag, the gap between the flow guide tube and the outer tube can provide a space for the flow guide tube to slightly expand radially outwards so as to prevent the problem of supporting urethra and urethral hemorrhage caused by the radial outward expansion of the flow guide tube, the use safety is improved, the flow guide tube is contacted with the outer tube through an annular bulge on the outer peripheral wall, the contact area is small, the resistance is small when, the artificial urethral catheter can not generate friction with the urethra, and the pain of a patient is reduced.

Description

Double-layer catheter capable of preventing radial compression

Technical Field

The utility model belongs to the technical field of the catheter technique and specifically relates to a prevent double-deck catheter of radial oppression.

Background

The catheter is a pipeline made of natural rubber, silicon rubber or silica gel and used for leading urine out by inserting into the bladder from the urethra, after the catheter is inserted into the bladder, sterile water is injected into an air bag at the head end of the catheter, so that the air bag expands in the bladder and is clamped at the bladder opening, the catheter is kept in the bladder, and the replacement cycle of the catheter is usually once every 2-3 days; however, when the existing catheter utilizes the water injection channel to inject the sterile water into the air bag, the catheter has certain pressure, so that the catheter is easy to expand outwards to press the urethra, and the problems of urethral laceration and urethral bleeding are easily caused.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to solve the problem that when the catheter in the prior art utilizes the water injection channel to inject the sterile water into the air bag, certain pressure is provided, so that the catheter is easy to expand outwards to press the urethra and easily cause the problems of urethral laceration and urethral bleeding, a double-layer catheter for preventing radial pressing is provided.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a prevent double-deck catheter of radial oppression, includes outer tube and honeycomb duct, catheterization passageway and water injection channel have in the honeycomb duct, run through on the head end periphery wall of honeycomb duct have with the drainage hole of catheterization passageway intercommunication, it is fixed with the gasbag to have on the head end periphery wall of honeycomb duct, form the gasbag chamber between the periphery wall of gasbag and honeycomb duct, water injection channel's head end and gasbag chamber intercommunication, the outer tube housing is established outside the honeycomb duct, and the both ends of honeycomb duct all outstanding in the outer tube, the gasbag is located between the head end tip of outer tube and the drainage hole, the clearance has between the internal perisporium of outer tube and the periphery wall of honeycomb duct, the periphery wall protrusion of honeycomb duct has a plurality of annular archs, the protruding axis direction interval distribution along the honeycomb duct of annular, the protruding outer peripheral face of annular contacts with the.

Utilize in this scheme to establish the outer tube at the draft tube overcoat, the clearance has between the internal perisporium of outer tube and the periphery wall of draft tube, make the draft tube utilize water injection passageway to pour into aseptic water when expanding the gasbag, clearance between draft tube and the outer tube can provide the space of slight radial outside expansion for the draft tube, in order to prevent to break urethra and the problem of urethreury because of the radial outside expansion of draft tube leads to, the security of use improves, and the draft tube contacts with the outer tube through annular arch on its periphery wall, area of contact is little, the resistance is little when inserting, also be convenient for change the draft tube of jam, and when changing the draft tube of jam, also can not produce the friction with the urethra, reduce patient's painful sense.

The outer tube is inserted into urethra in advance and approaches bladder to establish a passage, and then the guide tube is inserted into bladder from the outer tube, the outer peripheral wall of the guide tube is protruded with an annular protrusion, so that,

furthermore, an annular cavity is formed in the tail end of the flow guide pipe, at least three water injection channels are uniformly distributed along the circumferential direction of the flow guide pipe, the tail end of each water injection channel is communicated with the annular cavity, a water injection pipe is arranged on the peripheral wall of the tail end of the flow guide pipe, and the head end of each water injection pipe is communicated with the annular cavity; thereby enabling relatively uniform expansion of the balloon.

Further, the tail end of the water injection pipe is provided with a water injection port, a water injection cover is plugged in the water injection port, and a switch valve is arranged on the water injection pipe.

Further, the ooff valve includes valve barrel and valve rod, the valve barrel cover is established outside the water injection pipe, valve rod threaded connection is on the valve barrel, the inner tip of valve rod supports on the periphery wall of water injection pipe.

Furthermore, the head end of the urethral catheterization channel is provided with a urination port, and a urination cover is plugged in the urination port.

The utility model has the advantages that: the utility model discloses a prevent its utilization of radial oppression's double-deck catheter and establish the outer tube at the draft tube overcoat, the clearance has between the internal perisporium of outer tube and the periphery wall of draft tube, make the draft tube utilize water injection passageway to pour into aseptic water into when expanding the gasbag, clearance between draft tube and the outer tube can provide slight radial outside expansion's space for the draft tube, in order to prevent to break urethra and the problem of urethreury because of the radial outside expansion of draft tube leads to, the security of use improves, and the draft tube is protruding through annular on its periphery wall and outer tube contact, area of contact is little, the resistance is little when inserting, also be convenient for change the draft tube of jam, and when changing the draft tube of jam, also can not produce the friction with the urethra, reduce patient's painful sense.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a schematic view of a double layer catheter of the present invention preventing radial compression;

FIG. 2 is an enlarged partial schematic view of A of FIG. 1;

FIG. 3 is an enlarged partial schematic view of B of FIG. 1;

FIG. 4 is an enlarged partial schematic view of C of FIG. 1;

figure 5 is a cross-sectional schematic view of a double layer catheter of the present invention preventing radial compression.

In the figure: 1. an outer tube;

2. 2-1 parts of a flow guide pipe, 2-11 parts of a urethral catheterization channel, 2-2 parts of a urination port, 2-3 parts of a water injection channel, 2-4 parts of a drainage hole, 2-5 parts of an annular bulge, 2-6 parts of an annular cavity, 2-61 parts of a water injection pipe, 2-7 parts of a water injection port, 2-8 parts of an air bag cavity;

3. a gap;

4. 4-1 of a switch valve, 4-2 of a valve sleeve and 4-2 of a valve rod;

5. a urination cover;

6. a water injection cover.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic drawings, which illustrate the basic structure of the invention only in a schematic way, and thus show only the components that are relevant to the invention, and the directions and references (e.g., upper, lower, left, right, etc.) may be used only to help describe the features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.

Example 1

As shown in figures 1-5, a double-layer catheter for preventing radial compression comprises an outer tube 1 and a flow guide tube 2, wherein a urine guide channel 2-1 and a water injection channel 2-2 are arranged in the flow guide tube 2, a drainage hole 2-3 communicated with the urine guide channel 2-1 penetrates through the peripheral wall of the head end of the flow guide tube 2, an air bag 2-7 is fixed on the peripheral wall of the head end of the flow guide tube 2, an air bag cavity 2-8 is formed between the air bag 2-7 and the peripheral wall of the flow guide tube 2, the head end of the water injection channel 2-2 is communicated with the air bag cavity 2-8, the outer tube 1 is sleeved outside the flow guide tube 2, two ends of the flow guide tube 2 are protruded out of the outer tube 1, the air bag 2-7 is positioned between the end of the head end of the outer tube 1 and the drainage hole 2-3, a gap 3 is arranged, the periphery wall protrusion of honeycomb duct 2 has a plurality of annular protrudingly 2-4, annular protrudingly 2-4 along honeycomb duct 2's axis direction interval distribution, the contact of the periphery face of annular protrudingly 2-4 and the interior perisporium of outer tube 1.

The tail end of the flow guide pipe 2 is internally provided with an annular cavity 2-5, at least three water injection channels 2-2 are uniformly distributed along the circumferential direction of the flow guide pipe 2, the tail end of each water injection channel 2-2 is communicated with the annular cavity 2-5, the peripheral wall of the tail end of the flow guide pipe 2 is provided with a water injection pipe 2-6, and the head end of each water injection pipe 2-6 is communicated with the annular cavity 2-5; thereby enabling relatively uniform expansion of the balloons 2 to 7.

The tail end of the water injection pipe 2-6 is provided with a water injection port 2-61, a water injection cover 6 is plugged in the position 2-61 of the water injection port, and a switch valve 4 is arranged on the water injection pipe 2-6; the switch valve 4 can cut off the water injection pipe 2-6, and after the water injection cover 6 and the switch valve 4 are opened, sterile water can be injected from the water injection port 2-61 to expand the air bag 2-7.

The switch valve 4 comprises a valve sleeve 4-1 and a valve rod 4-2, the valve sleeve 4-1 is sleeved outside the water injection pipe 2-6, the valve rod 4-2 is in threaded connection with the valve sleeve 4-1, and the end part of the inner end of the valve rod 4-2 abuts against the outer peripheral wall of the water injection pipe 2-6; the valve rod 4-2 can be close to or far away from the valve sleeve 4-1 by screwing the valve rod 4-2, and when the valve rod 4-2 is screwed down, the valve rod 4-2 can be close to the valve sleeve 4-1 to flatten the water injection pipe 2-6, so that the water injection pipe 2-6 is cut off; when the valve rod 4-2 is unscrewed, the valve rod 4-2 releases the extrusion on the water injection pipe 2-6, and the water injection pipe 2-6 is recovered smoothly; obviously, the switch valve 4 has a simple structure and can effectively reduce the cost.

The head end of the urethral catheterization channel 2-1 is provided with a urination port 2-11, and a urination cover 5 is plugged into the urination port 2-11; after the urination cover 5 is opened, the urine in the urethral catheterization channel 2-1 can be discharged.

The principle of the double layer catheter for preventing radial compression in this embodiment is as follows:

the outer tube 1 is inserted into the urethra in advance and is close to the bladder, a channel is established, then the guide tube 2 is inserted into the bladder from the outer tube 1, then the switch valve 4 and the water injection cover 6 are opened, sterile water is injected from the water injection ports 2-61 of the water injection tubes 2-6 by a syringe, the sterile water reaches the annular cavities 2-5 from the water injection tubes 2-6, then reaches the water injection channels 2-2 from the annular cavities 2-5, finally reaches the air bag cavities 2-8 from the water injection channels 2-2, the air bags 2-7 are expanded in the bladder, so that the guide tube 2 is retained in the urethra, urine in the bladder enters the urine guide channel 2-1 from the drainage hole 2-3, and the urine in the urine guide channel 2-1 can be discharged by opening the urine discharge cover 5 at the urine discharge port 2-11;

wherein, because the inner peripheral wall of the outer tube 1 and the outer peripheral wall of the honeycomb duct 2 have the gap 3, when the honeycomb duct 2 utilizes the water injection channel 2-2 to inject the sterile water to expand the gasbag 2-7, the gap 3 between the honeycomb duct 2 and the outer tube 1 can provide the honeycomb duct 2 with the slightly space expanded radially outwards, in order to prevent from expanding the problem of breaking urethra and urethral hemorrhage caused by radial outward expansion of the honeycomb duct 2, improve the safety of use;

the catheter can rub against the urethra within the specified use time if being blocked and needs to be replaced, so that the pain of a patient is increased undoubtedly; in the scheme, the honeycomb duct 2 is in contact with the outer tube 1 through the annular bulges 2-4 on the peripheral wall of the honeycomb duct, so that the contact area is small, the resistance is small when the honeycomb duct is inserted, the blocked honeycomb duct 2 is convenient to replace, and the honeycomb duct does not rub against the urethra when the blocked honeycomb duct 2 is replaced, so that the pain of a patient is reduced.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A double-layer catheter for preventing radial compression is characterized in that: comprises an outer tube (1) and a flow guide tube (2), a urine guide channel (2-1) and a water injection channel (2-2) are arranged in the flow guide tube (2), a drainage hole (2-3) communicated with the urine guide channel (2-1) is arranged on the peripheral wall of the head end of the flow guide tube (2), an air bag (2-7) is fixed on the peripheral wall of the head end of the flow guide tube (2), an air bag cavity (2-8) is formed between the air bag (2-7) and the peripheral wall of the flow guide tube (2), the head end of the water injection channel (2-2) is communicated with the air bag cavity (2-8), the outer tube (1) is sleeved outside the flow guide tube (2), the two ends of the flow guide tube (2) are all protruded out of the outer tube (1), and the air bag (2-7) is positioned between the head end of the outer tube (1) and the drainage, have clearance (3) between the internal perisporium of outer tube (1) and the periphery wall of honeycomb duct (2), the periphery wall protrusion of honeycomb duct (2) has a plurality of annular protruding (2-4), the axis direction interval distribution of honeycomb duct (2) is followed to annular protruding (2-4), the external peripheral face of annular protruding (2-4) and the internal perisporium contact of outer tube (1).

2. The double-layered radial compression prevention urinary catheter according to claim 1, wherein: the water injection device is characterized in that an annular cavity (2-5) is formed in the tail end of the guide pipe (2), the number of the water injection channels (2-2) is at least three, the water injection channels are evenly distributed along the circumferential direction of the guide pipe (2), the tail end of each water injection channel (2-2) is communicated with the annular cavity (2-5), a water injection pipe (2-6) is arranged on the peripheral wall of the tail end of the guide pipe (2), and the head end of each water injection pipe (2-6) is communicated with the annular cavity (2-5).

3. The double-layered radial compression prevention urinary catheter according to claim 2, wherein: the tail end of the water injection pipe (2-6) is provided with a water injection port (2-61), the water injection port (2-61) is plugged with a water injection cover (6), and the water injection pipe (2-6) is provided with a switch valve (4).

4. The double-layered radial compression prevention urinary catheter according to claim 3, wherein: the switch valve (4) comprises a valve sleeve (4-1) and a valve rod (4-2), the valve sleeve (4-1) is sleeved outside the water injection pipe (2-6), the valve rod (4-2) is in threaded connection with the valve sleeve (4-1), and the end part of the inner end of the valve rod (4-2) abuts against the peripheral wall of the water injection pipe (2-6).

5. The double-layered radial compression prevention urinary catheter according to claim 1, wherein: the head end of the urethral catheterization channel (2-1) is provided with a urination port (2-11), and a urination cover (5) is plugged into the urination port (2-11).