CN107007920A - The anti-urethral injury bladder irrigation catheter of Multifunctional anti-blocking plug - Google Patents

Abstract

The invention discloses a kind of anti-urethral injury bladder irrigation catheter of Multifunctional anti-blocking plug, including inner core tube and outer tube, the inner core tube is connected with outer tube head by the silica gel piece of influx shape bar chip architecture, inner core tube head is provided with inlet opening, outer tube lower sides are provided with delivery port, and inner core tube and outer tube afterbody are flexibly connected.The present invention is ingenious in design, structure member is simple, nontoxic non-stimulated without special material, non-corrosiveness, good biocompatibility, reducing mucous membrane of urethra stimulates, and the catheter is applied to have bleeding formation blood clot risk to need to carry out the patient of bladder irrigation after all urological surgeries, also can routinely it be used as common urinary catheter, easy to operate, the cost of material is low, is conducive to clinic to be widely popularized.

Description

Multifunctional anti-clogging anti-urethral injury bladder irrigation catheter

technical field

The invention relates to the field of medical devices, and more specifically, relates to a multifunctional anti-blockage and anti-urethral injury bladder irrigation catheter.

Background technique

As we all know, due to the existence of natural orifices in the human body such as the urethra and ureter, the amount of minimally invasive surgery in the cavity accounts for the majority of urological surgery. Most surgical procedures require indwelling urinary catheters, while minimally invasive resection of bladder tumors and minimally invasive procedures for benign prostatic hyperplasia often require continuous irrigation of the bladder. The three-chamber flushing catheter commonly used in existing clinical work generally adopts perforated water inlet and outlet, the opening is small and single, and because three lumens need to be reserved in conventional thick and thin catheters, the water inlet and outlet channels are also relatively thin , postoperative small blood clots, exfoliated necrotic tissue in the process of being discharged with the flushing fluid can easily block the irrigation catheter. Once the urinary catheter is blocked and the bladder is overfilled, the surgical wound will be dehiscated, the closed blood vessels will rupture and bleed, and due to the stimulation of blood clots, the patient will have repeated bladder spasms, which will not only increase the pain of the patient, but also cause uncontrollable aggravation of bleeding Affected the success rate of the operation, and even required a second operation.

On the other hand, most of the patients in urology are middle-aged and elderly patients. Due to age or physical factors, they are less responsive to anesthesia and wake up slowly after surgery. The indwelling catheter itself will stimulate the urethra, and some patients will be unconscious. Pulling or even pulling out the catheter without clearing it will cause serious damage to the urethral mucosa or even rupture the urethra if the balloon is not removed. Sometimes the balloon will burst when the balloon is pulled and squeezed, and the fragments of the balloon will remain. In short, urinary catheters, which seem to be simple small devices, are likely to add a lot of work troubles to surgeons in clinical practice, and have adverse effects on patients' health.

Contents of the invention

The purpose of the present invention is to aim at the deficiencies of the prior art in clinical application and a kind of simple in structure specially designed, easy to implement bladder flushing catheter, this catheter is suitable for all urological operations and has bleeding to form blood clot Risk patients who need bladder irrigation can also be routinely used as an ordinary urinary catheter.

In order to achieve the above object, the present invention provides a multifunctional anti-blockage and anti-urethral injury urinary bladder irrigation catheter, which includes an inner core tube and an outer tube, and the inner core tube and the head of the outer tube pass through a silica gel sheet with a converging strip structure The head of the inner core tube is provided with a water inlet, the lower side wall of the outer tube is provided with a water outlet, and the inner core tube and the tail of the outer tube are flexibly connected.

The converging strip structure silica gel sheet of the present invention can be folded and bent, and there is a strip-shaped gap between each silica gel sheet.

Both the inner core tube and the main body of the outer tube of the present invention are silicone tubes, the diameter of the outer tube is 5-7.5mm, the diameter of the inner core tube is 1.5-4.5mm, and the diameter of the outer tube is preferably 5.1-5.4mm, 5.8mm -6.2mm or 7.1-7.4mm, the corresponding inner core tube diameter is 1.8-2.2mm, 2.8-3.2mm or 3.8-4.2mm. Tube diameters of different thicknesses can be selected according to clinical needs.

The water outlet end of the water outlet of the present invention is provided with a plastic plug, and the tail end of the inner core tube is provided with a plastic tail plug.

The joints of the inner core tube and the outer tube tail of the present invention are plastic ports, the inner core tube tail is a plastic port with scale, the outer tube tail is a plastic port with cracks and threads, and the threaded plastic port at the end of the outer tube is Comes with screw cap.

The number of silica gel sheets with the converging strip structure of the present invention is at least 4, preferably 6. When there are 6 silica gel sheets with a converging strip structure, the length of each silica gel sheet is 3cm and the width is 3mm. Moreover, the number or width of the silica gel sheet can also increase with the increase of the diameter of the outer tube.

The diameter of the water inlet hole of the present invention is consistent with the diameter of the inner core lumen, and the diameter of the water outlet hole is consistent with the diameter of the outer lumen.

The anti-clogging and anti-urethral damage urinary bladder flushing catheter of the present invention no longer adopts an airbag structure at the head end, but adopts a converging spline sheet-like structure of silica gel material, which forms a part of the urinary catheter outer tube under normal conditions. Because of its slightly convex curvature, after the urinary catheter is successfully inserted into the bladder, the inner core tube of the urinary catheter is pulled. It is also different. The flushing liquid enters the gap between the strips and flows out along the lumen. The inner core tube and the tail of the outer tube are made of plastic. The inner core tube, so that the inner and outer tubes are tightly connected to prevent water leakage and limit the retraction of the inner core tube.

Compared with prior art, the beneficial effect of the present invention is:

(1) The present invention stretches the silicone sheet like an umbrella to fix the urinary catheter by pulling the inner core tube, and only needs to retract the inner core when pulling it out. The design is ingenious and simple, and will not substantially hinder the removal of the urinary catheter. At the same time, when there is no pressure in the capsule, it will not cause the urinary catheter to burst, and there will be no phenomenon of foreign matter remaining in the bladder after the rupture of the urinary catheter skin.

(2) The invention fixes the urinary catheter through the principle of opening the silica gel sheet. The silicone material itself is soft. Even if the catheter is pulled out violently without restoring the inner core and the silica gel sheet is opened, only the fixed end of the catheter enters the urethra The silicone sheet compresses itself to fit the urinary catheter without damaging the urethral mucosa.

(3) The present invention makes the silica gel sheet bulge by pulling the inner core tube, and through the principle of backwater in the gap between the silica gel sheets, the strip-shaped gap is not easy to be blocked by small blood clots, and the length of the inner core tube can be pulled to change the gap size, reducing the risk of clogging even more.

(4) The present invention only needs to be divided into two chambers, and in clinical work, due to the fluidity of the liquid, the water inlet chamber is generally not easy to be blocked, because the diameter of the inner core water inlet pipe is appropriately reduced in this design, while the water outlet chamber is keeping the urine The total thickness of the tube is increased, so that some small blood clots and tissue residues in the bladder are more easily excreted from the body.

(5) In the present invention, when large blood clots appear in the bladder, insert the head end of the urinary catheter into the blood clot, and push the inner core back and forth to change the bulging shape, buckling and straightening state of the head end silicone sheet, which can be stirred and cut from the inside of the blood clot The blood clot is then sucked through the water outlet port, which can separate the blood clot and extract it from the body, effectively avoiding secondary surgery.

(6) The present invention adopts thread design when connecting the tails of the inner and outer tubes. At the joint of the tails of the inner and outer tubes, the diameter of the outer tube is slightly thicker than that of the inner core tube, but there is a crack at the tail of the outer tube, which is slightly opened to ensure the mobility of the inner core tube , but when the nut is tightened, the cracks in the outer tube are closed, and the inner and outer tubes are tightly fitted, which limits the movement of the inner core tube and can also prevent leakage.

(7) The present invention has ingenious design and simple structural components, so that not only ordinary medical staff can use it, but also trainee students can learn to operate it. It does not require special materials, is non-toxic, non-irritating, non-corrosive, has good biocompatibility, reduces urethral mucosal irritation, and the cost of materials is not high, and the price of the finished product is more acceptable to ordinary patients, which is conducive to widespread clinical promotion.

Description of drawings

Fig. 1 is a structural schematic diagram of the multifunctional anti-clogging and anti-urethral injury bladder irrigation catheter according to the present invention.

Fig. 2 is an enlarged view of the plastic port at the tail of the outer tube of the present invention.

Fig. 3 is an enlarged view of the plastic port at the tail of the inner core tube of the present invention.

Fig. 4 is an enlarged view of the nut of the present invention.

In the figure: 1-inner core tube, 2-outer tube, 3-silica gel sheet, 4-inlet hole, 5-nut, 6-water outlet, 7-plastic plug, 8-outer tube tail, 9-inner core Pipe tail, 10-plastic tail plug.

detailed description

Preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

Example 1

According to a kind of multifunctional anti-clogging and anti-urethral injury bladder flushing catheter shown in Figure 1, it includes an inner core tube 1 and an outer tube 2, and the heads of the inner core tube 1 and the outer tube 2 pass through the converging strip structure. The silica gel sheets 3 are connected, the head of the inner core tube 1 is provided with a water inlet 4, the side wall of the lower part of the outer tube 2 is provided with a water outlet 6, and the inner core tube 1 and the tail of the outer tube 2 are flexibly connected.

The converging strip structure silicone sheet 3 in this embodiment can be folded and bent, and there is a strip-shaped gap between each silicone sheet.

The main bodies of the inner core tube 1 and the outer tube 2 described in this embodiment are both silicone tubes, the diameter of the inner core tube 1 is 3 mm, and the diameter of the outer tube 2 is 6 mm.

The water outlet end of the water outlet 6 in this embodiment is provided with a plastic plug 7 . The tail 9 of the inner core tube is provided with a plastic tail plug 10 .

The joints of the inner core tube 1 and the outer tube 2 tails described in this embodiment are all plastic ports, the inner core tube tail 9 is a plastic port with scale, the outer tube tail 8 is a plastic port with cracks and threads, and the outer tube 2 tail A screw cap 5 is provided on the threaded plastic mouth.

There are 6 silica gel sheets 3 described in this embodiment, each of which has a length of 3 cm and a width of 3 mm.

The diameter of the water inlet hole described in this embodiment is 3mm, and the diameter of the water outlet is 6mm.

The usage of the embodiments of the present invention with different functions will be described in detail below in combination with the specific conditions in the actual operation process.

Application example 1

As a conventional urinary catheter, in the initial state, the catheter of the embodiment of the present invention only has a slight bulge due to the design of the curvature of the 3rd zone of the silicone sheet, and lubricating oil needs to be applied before indwelling the catheter, and the entire outer layer of the catheter is made of silicone material, which is flexible The sex is good, so a slight bulge here will not affect the urinary catheter entering the bladder. When the urinary catheter enters the bladder, it can be seen that the urine flows out from the inner core tube 1. At this time, the nut 5 at the tail of the outer tube 2 is twisted counterclockwise to loosen the plastic outer tube. At this time, the inner core tube 1 with scale can be pulled out about 2 cm. Tighten the nut 5 clockwise. At this time, the outer tube 2 and the inner core tube 1 fit tightly, which not only plays the role of fixing the inner core tube 1, but also prevents water leakage. At this time, the outlet of the inner core tube 1/outer tube 2 is connected to urine The bag can play the role of a conventional catheter. Clinical care currently recommends secondary fixation of the urinary catheter, and the plastic tail cap of the present invention is easier to be fixed to the skin by adhesive tape than silica gel, further preventing the urinary catheter from slipping.

Application example 2

As a common bladder irrigation tube, bladder irrigation is required when there is a risk of bleeding and blood clot formation in the bladder, and the present invention is especially applicable. First, indwell the urinary catheter according to the conventional method, prop up and fix the silicone sheet 3, at this time, the inner core tube 1 is connected to the flushing water inlet, and the outer tube 2 is connected to the water outlet urine bag. Because of the double-chamber design of the urinary catheter in the embodiment of the present invention, the design of the same type of urinary catheter is changed from three chambers to two chambers, which saves space because of the lack of airbag chambers, and the water outlet chamber is thicker than that of the general three-chamber balloon catheter , while the silicone sheet 3 at the head end can control its uplift angle by pulling the inner core tube 1. The longer the inner core tube 1 is pulled out, the more the silicone sheet 3 will be raised, and the gap between the sheets will be larger, which is better to prevent Blockage of small blood clots facilitates expulsion of small blood clots through the lumen.

Application example 3

As a bladder irrigation tube for cleaning blood vessels, when there are large blood clots or many residual blood clots in the bladder, the urinary catheter is often surrounded by blood clots as soon as it enters the bladder. Ordinary irrigation catheters will be quickly blocked, and even replacement of new urinary catheters cannot solve the problem .

The urinary catheter of the embodiment of the present invention can stir and divide blood clots to promote their smaller discharge. First, insert the urinary catheter into the bladder. Because there are many blood clots in the bladder, the inner core tube 1 generally flows out a small amount of red urine or discharges small blood clots. Unscrew the nut 5 at the tail of the outer tube 2 counterclockwise. At this time, it can be pulled back and forth. The inner core tube 1, at this time, the silicone sheet 3 is straightening and bending in the blood clot in the bladder, which is equivalent to stirring and cutting the blood clot back and forth, and the fresh blood clot tissue is generally soft and fragile, and some blood clots can even be sandwiched by the closed plates The lumen plays the role of dividing the blood clot, and at the same time flushes out the divided blood clot through the bladder.

Application example 4

Injection, stirring and mixing of medicines, common urinary catheters can only inject medicines, and if they move in the urethra, they will easily scratch the mucous membranes, so they cannot promote the uniform diffusion of medicines in the bladder, but the urinary catheter of the embodiment of the present invention solves this drawback.

Keep the initial state of the urinary catheter, the water outlet 6 is closed with a plastic plug 7 to prevent the drug from flowing out, after the catheter is successfully inserted, pull out the plastic tail plug 10 and inject the drug through the inner core tube 1, insert the plastic tail plug 10 back, and unscrew it counterclockwise The outer tube 2 and the nut 5 can pull the inner core tube 1 back and forth, and the liquid in the bladder is stirred by the head end of the catheter and the silicone sheet 3 to promote its uniform distribution, and the air pressure in the lumen itself is greater than the internal pressure of the bladder, which can Stop fluid from leaking out of the bladder.

Claims (10)

1. A multifunctional anti-clogging anti-urethral injury urinary bladder irrigation catheter, comprising an inner core tube (1) and an outer tube (2), characterized in that the inner core tube (1) and the outer tube (2) head Connected by the silica gel sheet (3) of converging strip structure, the head of the inner core tube (1) is provided with a water inlet (4), the lower side wall of the outer tube (2) is provided with a water outlet (6), and the inner core tube (1) is provided with a water inlet (4). (1) is flexibly connected with the tail of the outer pipe (2). 2. The multifunctional anti-blockage and anti-urethral injury urinary bladder irrigation catheter according to claim 1, characterized in that the silica gel sheets (3) of the converging strip structure can be folded and bent, and each silica gel sheet (3) There are long gaps between them. 3. The multifunctional anti-clogging and anti-urethral injury bladder irrigation catheter according to claim 1, characterized in that the inner core tube (1) and the main body of the outer tube (2) are silicone tubes. 4. The multifunctional anti-blocking and anti-urethral injury bladder irrigation catheter according to claim 1 is characterized in that, the outer tube (2) diameter is 5-7.5mm, and the inner core pipe (1) diameter is 1.5-4.5mm. 5. The multifunctional anti-clogging and anti-urethral injury bladder irrigation catheter according to claim 1, is characterized in that a plastic plug (7) is provided at the water outlet end of the water outlet (6), and a plastic plug (7) is provided at the end of the inner core tube (9). Plastic tail plugs (10). 6. The multifunctional anti-clogging and anti-urethral injury bladder irrigation catheter according to claim 1, characterized in that the joints of the inner core tube (1) and the outer tube (2) are plastic ports. 7. The multifunctional anti-clogging and anti-urethral injury bladder irrigation catheter according to claim 6, characterized in that the inner core tube tail (9) is a graduated plastic mouth, and the outer tube tail (8) has a crack Threaded plastic port. 8. The multifunctional anti-clogging and anti-urethral injury bladder irrigation catheter according to claim 7, characterized in that a screw cap (5) is provided on the threaded plastic mouth of the outer tube tail (8). 9. The multifunctional anti-clogging and anti-urethral injury bladder irrigation catheter according to claim 1, characterized in that the number of silica gel sheets (3) in a converging strip structure is at least 4, preferably 6. 10. The multifunctional anti-blockage and anti-urethral injury bladder irrigation catheter according to claim 6, characterized in that the diameter of the water inlet hole (4) is consistent with the diameter of the inner lumen, and the diameter of the water outlet hole (6) is the same as that of the outer tube. (2) The diameter of the lumen is the same.