CN215690917U - Catheter - Google Patents

Abstract

The utility model discloses a catheter, which comprises a catheter, an air bag, an inflation tube, a flushing tube, a negative pressure suction tube and a urine discharge tube, wherein the front end of the catheter is in a closed bullet shape, the air bag is sleeved outside the catheter, and a flushing hole and a drainage hole are formed in the tube wall in front of the air bag of the catheter; a first cavity channel, a second cavity channel and a third cavity channel which are not communicated with each other are arranged in the catheter, one end of the first cavity channel is communicated with the air bag, and the other end of the first cavity channel is communicated with the inflation tube; one end of the second cavity is communicated with the flushing hole, and the other end of the second cavity is communicated with the flushing pipe; one end of the third cavity is communicated with the drainage hole, and the other end of the third cavity is communicated with the urination pipe and the negative pressure suction pipe. The catheter can suck out blood clots through negative pressure, so that urine can be smoothly drained, and the occurrence of infection caused by pollution due to repeated opening of the connection between the urine drainage tube and the urine bag can be prevented; the bullet head design of front end is convenient for on the one hand the catheter inserts, and on the other hand avoids because of the mucous membrane damage that the negative pressure attraction leads to.

Description

Catheter

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a catheter.

Background

The catheters in the current market are of two types, one type is a double-cavity catheter, one end is an air bag end, and the other end is a urine outflow end, and the catheter is generally used for patients who need catheterization conventionally; the second is a three-cavity catheter, one end of which is an air bag end, the other end of which is a urine outflow end, and the other end of which is a flushing fluid inflow end. In recent years, urinary tract bleeding of patients caused by bladder malignant tumor, prostate malignant tumor, trauma, urinary tract infection and the like is more and more, at present, clinically, patients of the type need to wash the bladder through an indwelling three-cavity catheter to prevent urethral blockage, but bleeding patients often use hemostatic drugs, and simultaneously, bleeding triggers the start of a whole-body procoagulant mechanism of the patients, so that blood clots are easily formed in the bladder, the urethral canal and the like of the patients to block the catheter, the urine of the patients cannot be discharged, pain and other discomfort are caused, and clinically, two measures are often taken for the phenomenon: 1. repeatedly sucking the urine discharge end by using a special syringe for the catheter to draw out blood clots so as to achieve the purpose of dredging the catheter; 2. repeatedly inserting or rotating the catheter to crush the formed large blood clots and then discharge the blood clots. The two methods are easy to cause further damage to mucous membranes such as bladder, urethra and the like to aggravate bleeding due to external force damage, and are not different from frosting on snow for patients.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems that the existing catheter is easy to cause mucous membrane injury, aggravate bleeding and the like when being blocked by blood clots for dredging, the utility model innovatively provides a catheter which can suck out the blood clots through negative pressure so as to lead urine to be smoothly drained and also can prevent pollution and further infection caused by repeatedly opening the connection between a urinary catheter and a urine bag; and the bullet head design of front end is convenient for on the one hand the catheter inserts, and on the other hand avoids because of the mucous membrane damage that the negative pressure attracts to lead to.

In order to achieve the technical purpose, the utility model discloses a catheter which comprises a catheter tube, an air bag, an inflation tube, a flushing tube, a negative pressure suction tube and a urine discharge tube, wherein the front end of the catheter tube is in a closed bullet shape, the air bag is sleeved outside the catheter tube, and a flushing hole and a drainage hole are formed in the tube wall in front of the air bag of the catheter tube; a first cavity channel, a second cavity channel and a third cavity channel which are not communicated with each other are arranged in the catheter, one end of the first cavity channel is communicated with the air bag, and the other end of the first cavity channel is communicated with the inflation tube; one end of the second cavity is communicated with the flushing hole, and the other end of the second cavity is communicated with the flushing pipe; one end of the third cavity is communicated with the drainage hole, and the other end of the third cavity is communicated with the urination tube and the negative pressure suction tube.

Further, the third cavity, the urination tube and the negative pressure suction tube are connected through a three-way valve.

Furthermore, a one-way valve communicated with the urine outlet of the urine drainage tube is arranged in the urine drainage tube.

Further, a water stop clip is clamped on the negative pressure suction tube.

Furthermore, the end part of the negative pressure suction tube, which is far away from the third cavity, is connected with a connector which is used for being in adaptive connection with a negative pressure suction apparatus.

Further, the connecting head upper cover is provided with a protective cap.

Further, the washing hole is located in front of the drainage hole.

Furthermore, the number of the flushing holes is multiple, and the multiple flushing holes are distributed along the circumferential direction of the conduit; the quantity of drainage hole is a plurality of, and a plurality of drainage holes are followed the circumference of pipe is arranged.

Furthermore, a negative pressure adjusting hole is formed in the tube wall of the negative pressure suction tube, and a rubber sealing cover capable of adjusting negative pressure is covered in the negative pressure adjusting hole.

Further, a positive pressure joint used for being matched with the bladder irrigator is connected to the end, away from the second cavity, of the irrigation tube.

The utility model has the beneficial effects that:

the catheter can suck out blood clots through negative pressure, so that urine can be smoothly drained, pollution caused by repeatedly opening the connection between the urine drainage tube and the urine bag can be prevented, and further infection can be caused; the bullet head design of front end is convenient for on the one hand the catheter inserts, and on the other hand avoids because of the mucous membrane damage that the negative pressure attraction leads to.

Drawings

Fig. 1 is a schematic structural view of a urinary catheter according to an embodiment of the present invention.

In the figure, the position of the upper end of the main shaft,

1. a conduit; 11. a drainage hole; 12. flushing the hole; 2. an air bag; 3. an inflation tube; 4. a flush tube; 5. a negative pressure suction tube; 6. a urinary catheter; 7. a water stop clip; 8. a connector; 9. a protective cap; 10. a negative pressure regulating hole; 20. a rubber sealing cover.

Detailed Description

The urinary catheter provided by the utility model is explained and explained in detail below with reference to the drawings in the specification.

The catheter of the present embodiment is mainly applied to persons who have bladder bleeding and urinary tract bleeding.

As shown in fig. 1, the embodiment specifically discloses a urinary catheter, which comprises a catheter 1, an air bag 2, an inflation tube 3, a flushing tube 4, a negative pressure suction tube 5 and a urinary catheter 6, wherein the front end of the catheter 1 is in a closed bullet shape, the surface of the bullet-shaped front end is smooth and has certain penetrating power, and bleeding caused by injury of mucous membrane of urethra can be effectively prevented when the urinary catheter is inserted into urethra; and when the negative pressure suction is carried out, the injury of the mucous membrane is avoided due to the smooth surface and the gradually contracted shape.

The air bag 2 is sleeved outside the catheter 1, the air bag 2 is positioned at the front section of the catheter, and the air bag 2 is inflated and expanded to fix the catheter in the urethra and prevent the catheter from slipping out of the urethra; a washing hole 12 and a drainage hole 11 are formed in the pipe wall in front of the air bag 2 of the catheter 1, namely the washing hole 12 and the drainage hole 11 are arranged between the air bag 2 and the end part of the bullet head; preferably, the flushing aperture 12 is located forward of the drainage aperture 11, the flushing aperture 12 being closer to the bullet tip. The flushing hole 12 is closer to the front end to facilitate bladder flushing, and the drainage hole 11 can drain urine, flushing liquid and blood clots and finally discharge the urine, the flushing liquid and the blood clots through the tail end of the catheter.

The number of the flushing holes 12 is multiple, and the multiple flushing holes 12 are distributed along the circumferential direction of the catheter 1 and can be uniformly distributed or non-uniformly distributed; the quantity of drainage hole 11 is a plurality of, and a plurality of drainage holes 11 are arranged along pipe 1's circumference, can evenly distributed, also can unevenly distributed. A plurality of flushing holes 12 and drainage holes 11 are arranged, so that the flushing and urination negative pressure suction efficiency is improved. In this embodiment, the number of the washing holes 12 and the drainage holes 11 is two.

The catheter 1 is internally provided with a first cavity channel, a second cavity channel and a third cavity channel which are not communicated with each other, the first cavity channel, the second cavity channel and the third cavity channel are independent from each other, the shapes of the first cavity channel, the second cavity channel and the third cavity channel can be set into a ring shape in cross section, the first cavity channel, the third cavity channel and the second cavity channel are sequentially sleeved from outside to inside, and the cavity channels are separated by a partition plate and are independent from each other. The inflation tube 3, the flushing tube 4, the negative pressure suction tube 5 and the urine discharge tube 6 are all arranged at the tail end of the catheter.

One end of the first cavity is communicated with the air bag 2, the other end of the first cavity is communicated with the inflation tube 3, the front end of the first cavity is connected with the air bag 2, the tail end of the first cavity is connected with the inflation tube 3, the tail end of the inflation tube 3 is connected with the inflation device, the inflation tube 3 is communicated with the air bag 2, and the inflation device inflates the air bag 2 through the inflation tube and the first cavity, so that the air bag 2 expands, supports the urethral wall, and prevents the urethral catheter from being separated from the urethra.

One end of the second cavity is communicated with the flushing hole 12, the other end of the second cavity is communicated with the flushing pipe 4, namely the front end of the second cavity is communicated with the flushing hole 12, the tail end of the second cavity is connected with the flushing pipe 4, flushing liquid enters from the flushing pipe 4, the flushing liquid can be injected into the flushing pipe 4 by instruments such as a syringe or a bladder flusher, the flushing liquid enters into the urethra and the bladder through the flushing hole 12 after passing through the second cavity, the flushing hole 12 provides an inlet for the flushing liquid, and the bladder is convenient to flush. In this embodiment, the end of the flushing tube 4 away from the second lumen may also be connected with a positive pressure joint adapted to the bladder irrigator, which facilitates connection of the bladder irrigator, on one hand reduces the use of steel needles during bladder irrigation in clinic, and reduces the occurrence of needle stick injuries; on the other hand, the catheter is prevented from being broken due to repeated puncture, and the retrograde infection of the urinary system is avoided.

One end of the third cavity is communicated with the drainage hole 11, the other end of the third cavity is communicated with the urinary catheter 6 and the negative pressure suction tube 5, namely the front end of the third cavity is communicated with the drainage hole 11, the tail end of the third cavity is connected with the urinary catheter 6 and the negative pressure suction tube 5, the urinary catheter 6 and the negative pressure suction tube 5 share the drainage hole 11, the urinary catheter 6 is used for discharging urine, the end part, far away from the third cavity, of the urinary catheter 6 can be connected with a urine bag, the end part, far away from the third cavity, of the negative pressure suction tube 5 is connected with a negative pressure suction device, certain negative pressure is generated, blood clots can be sucked out conveniently, the urine can be discharged, the blood clots can be sucked out, and blocking of the catheter is prevented.

The arrangement of the negative pressure suction tube 5 can also prevent the pollution caused by repeatedly opening the connection between the urine discharge tube 6 and the urine bag, thereby further preventing the infection. If the patient has large bleeding amount and is in a high coagulation state, the negative pressure aspirator can be continuously opened to suck out formed blood clots in time, so that the infection can be prevented, and the labor can be saved for nurses; the bullet-shaped gradually contracting structure and the smooth surface at the front end of the catheter 1 are matched with the air sac supporting urethra to avoid mucosal injury caused by negative pressure suction.

The third cavity, the urination pipe 6 and the negative pressure suction pipe 5 are connected through a three-way valve, and the third cavity and the urination pipe 6 or the third cavity and the negative pressure suction pipe 5 can be selectively communicated through the control of the three-way valve; when the urination of the urination tube 6 is not smooth, the fact that blood clots exist in the urethral catheter is indicated, the adjustable three-way valve enables the third cavity channel to be communicated with the negative pressure suction tube 5, the connection between the urination tube 6 and the third cavity channel is closed, the blood clots are sucked out through negative pressure, and meanwhile urine can be prevented from flowing back to the urethra and the bladder.

In some embodiments, a one-way valve is provided in the urinary catheter 6 to communicate with the urinary outlet of the urinary catheter 6 to prevent urine from flowing back into the urethra and bladder. The one-way valve can be combined with the three-way valve for use, and when the third cavity is communicated with the urine drainage pipe 6 for urination, urine is prevented from flowing back; also can be when not setting up the three-way valve, when the third chamber says all to be connected with ureter 6 and vacuum aspiration pipe 5 promptly, set up the check valve in ureter 6, avoid the urine backward flow, especially avoid the urine backward flow when the vacuum aspiration.

In some embodiments, a water stop clip 7 is clamped on the negative pressure suction tube 5. Under the condition that the third cavity is communicated with the urination pipe 6 and the negative pressure suction pipe 5, the water stop clamp 7 can prevent urine from flowing back to cause pollution when the negative pressure is not opened. The water stop clip 7 may be used in combination with a one-way valve in the urinary catheter 6.

The end part of the negative pressure suction tube 5, which is far away from the third cavity, is connected with a connector 8 which is used for being in adaptive connection with the negative pressure suction apparatus, the connector 8 adopts the existing pipeline connector, and the connector 8 is convenient for being in quick connection with a suction connecting pipe of the negative pressure suction apparatus. Further, the connector 8 is covered with a protective cap 9, and when the negative pressure aspirator is not connected, the protective cap 9 can prevent the connector from being polluted.

The pipe wall of the negative pressure suction pipe 5 is provided with a negative pressure adjusting hole 10, the negative pressure adjusting hole 10 is covered with a rubber sealing cover 20 capable of adjusting negative pressure, and the size of a gap between the rubber sealing cover 20 and the hole wall is adjusted by pressing the rubber sealing cover 20 with fingers to adjust the size of the negative pressure. When the rubber sealing cover 20 completely seals the negative pressure adjusting hole 10, the negative pressure is maximized. The larger the gap between the rubber sealing cover 20 and the hole wall is, the smaller the negative pressure is.

During actual processing, a sealing cover seat can be integrally formed and processed on the negative pressure suction tube and is perpendicular to the length direction of the negative pressure suction tube, the sealing cover seat is communicated with the inside of the negative pressure suction tube, the length of a negative pressure adjusting hole is prolonged by the sealing cover seat, the rubber sealing cover 20 can be integrally formed with the sealing cover seat, the rubber sealing cover is movably connected with the sealing cover seat, the rubber sealing cover 20 can be covered or pulled out of the negative pressure adjusting hole by rotating the rubber sealing cover, and the negative pressure can be adjusted by pressing the rubber sealing cover with fingers to adjust the size of a gap between the rubber sealing cover and the hole wall.

The catheter of the utility model is inserted into urethra by the traction of bullet head, gas is injected into the air bag 2 by the inflating device connected with the inflating tube 3, the air bag expands, the air bag is attached to the wall of urethra and close to bladder neck, and the catheter 1 can not slip off urethra. Urine in the bladder flows out along the drainage hole 11, the tail end of the urination pipe 6 can be connected with a urine bag, and the urine enters the urine bag through the third cavity and the urination pipe to be collected. The irrigating liquid can also be injected into the irrigating tube 4 from the end of the irrigating tube 4, and the irrigating liquid enters the urethra through the irrigating hole 12 to fully contact and irrigate the urethra and the bladder. When the urinary catheter 6 is blocked, the negative pressure suction tube 5 is connected with the negative pressure suction device, and the negative pressure is adjusted to be proper so as to suck out blood clots and ensure that urine drainage is smooth. When the catheter needs to be taken out from the urethra, the inflating device at the other end of the inflating tube is taken down, the gas in the air bag is exhausted, the gas in the air bag can be sucked out by adopting an air suction device such as a syringe, and the catheter can be taken out after the air bag is contracted.

According to the catheter, the negative pressure suction tube 5 and the urinary catheter 6 are converged in the third cavity, when the urinary catheter is blocked, the negative pressure suction tube 5 can directly suck out blood clots, so that on one hand, the catheter can be prevented from being blocked, and on the other hand, the occurrence of infection caused by pollution due to repeated opening of the connection between the urinary catheter 6 and a urine bag can be prevented; the drainage hole 11 is positioned in front of the air bag 2, and a section of bullet-shaped design is arranged in front of the drainage hole 11, so that the mucous membrane can be effectively prevented from being damaged and bleeding aggravated because the drainage hole 11 is directly sucked onto the mucous membrane during negative pressure suction; if the patient has large bleeding amount and high coagulation state, the negative pressure aspirator can be continuously opened to suck out the formed blood clots in time, thereby not only preventing infection, but also saving manpower for nurses.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, references to the description of the term "the present embodiment," "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and simplifications made in the spirit of the present invention are intended to be included in the scope of the present invention.

Claims (10)

1. A catheter is characterized by comprising a catheter (1), an air bag (2), an inflation tube (3), a flushing tube (4), a negative pressure suction tube (5) and a urination tube (6), wherein the front end of the catheter (1) is in a closed bullet shape, the air bag (2) is sleeved outside the catheter (1), and a flushing hole (12) and a drainage hole (11) are formed in the tube wall in front of the air bag (2) of the catheter (1); a first cavity channel, a second cavity channel and a third cavity channel which are not communicated with each other are arranged in the catheter (1), one end of the first cavity channel is communicated with the air bag (2), and the other end of the first cavity channel is communicated with the inflation tube (3); one end of the second cavity is communicated with the flushing hole (12), and the other end of the second cavity is communicated with the flushing pipe (4); one end of the third cavity is communicated with the drainage hole (11), and the other end of the third cavity is communicated with the urination pipe (6) and the negative pressure suction pipe (5).

2. A catheter according to claim 1, wherein the third channel, the urinary catheter (6) and the negative pressure aspiration tube (5) are connected by a three-way valve.

3. A catheter according to claim 1, characterised in that a one-way valve is arranged in the catheter (6) leading to the urine outlet of the catheter (6).

4. A catheter according to claim 1 or 3, characterized in that a water stop clip (7) is clipped on the negative pressure suction tube (5).

5. A catheter according to claim 1, wherein the end of the vacuum aspiration tube (5) far from the third channel is connected with a connector (8) adapted to be connected with a vacuum aspirator.

6. A catheter according to claim 5, characterized in that the connector (8) is capped with a protective cap (9).

7. A catheter according to claim 1, wherein the rinsing holes (12) are located in front of the drainage holes (11).

8. A catheter according to claim 1 or 7, wherein said flushing holes (12) are plural in number, and a plurality of flushing holes (12) are arranged along the circumference of said catheter (1); the number of the drainage holes (11) is multiple, and the drainage holes (11) are distributed along the circumferential direction of the catheter (1).

9. The catheter according to claim 1, characterized in that the wall of the negative pressure suction tube (5) is provided with a negative pressure adjusting hole (10), and the negative pressure adjusting hole (10) is internally covered with a rubber sealing cover (20) capable of adjusting negative pressure.

10. A catheter according to claim 1, wherein the end of the irrigation tube (4) remote from the second channel is connected to a positive pressure fitting for fitting with a bladder irrigator.

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