A bladder puncture fistula tube and its components and working method

Abstract

The present invention discloses a bladder puncture fistula tube and its components and working method. The bladder puncture fistula tube comprises a puncture sleeve, a puncture device and an indwelling fistula tube, wherein the puncture device and the indwelling fistula tube can be movably inserted and pulled out and embedded in the puncture sleeve, and is characterized in that a cross-shaped flap is provided at the tail of the puncture sleeve. The bottom end of the puncture sleeve of the bladder puncture fistula tube of the present invention is provided with a one-way cross-shaped flap, and urine will not be sprayed out at the moment when the puncture tube core is pulled out because of the blocking of the flap at the tail end of the puncture sleeve. At the same time, the cross-cut membrane can be stretched inward and outward by the fistula tube when the indwelling fistula tube is placed in the next step, and the placement of the fistula tube is not hindered. The puncture device comprises a puncture tube core protection device, wherein the puncture tube core protection sleeve is completely nested in the periphery and front end of the puncture tube core after the puncture is successful, so as to prevent the puncture process and the puncture head end from damaging the inner wall of the bladder and the tissues and organs around the bladder, such as the bladder mucosa, prostate, seminal vesicle, etc. after the puncture is successful.

Description

Technical Field

[0001] The present invention relates to the technical field of medical auxiliary equipment, and more specifically, to a bladder puncture fistula tube and its components and working method. Background Art

[0002] Cystostomy is a commonly used medical technology. For patients with severe urinary tract obstruction who cannot complete urinary catheterization by retrograde insertion of a urinary catheter from the urethral opening, cystostomy is required to drain urine and place a cystostomy tube. The cystostomy tube is made of rubber or silicone and is inserted into the bladder through the skin, subcutaneous tissue, and the anterior wall of the bladder to guide urine outflow. After the cystostomy tube is inserted into the bladder, there is an air bag or water bag near the head of the cystostomy tube to keep the cystostomy tube fixed in the bladder and prevent it from falling out. The tail end of the cystostomy tube is connected to a urine bag with a special connector to collect urine.

[0003] The defects of existing urinary catheters are: 1. There is no device to prevent urine from flowing out at the tail end of the bladder puncture device. When the puncture device successfully penetrates the bladder, urine will be ejected at the same time as the puncture tube core is pulled out due to the effect of the internal pressure of the bladder. The urine ejection will not only pollute the surrounding environment, but also cause the bladder capacity to shrink sharply after the urine flows out of the bladder, and the anterior wall of the bladder will slip off the puncture catheter, thereby affecting the doctor's next operation and causing puncture failure. At the same time, because the pressure in the bladder drops suddenly due to the ejection of urine, the bladder mucosa may suddenly become congested and edematous, causing damage to the patient. In elderly patients with heart failure, if urine flows out rapidly during the puncture process, the pressure in the bladder drops suddenly, which may cause an increase in the amount of blood returning to the heart, causing heart failure and threatening the patient's life; 2. The puncture tube core lacks a protective device, which is easy to accidentally injure the side wall of the bladder, causing bleeding, and even causing damage and bleeding to the seminal vesicle and prostate; 3. The tail end of the double-lumen balloon catheter is forked, and the double-lumen catheter is directly inserted through the puncture tube. After insertion, the puncture sleeve cannot be pulled out. In clinical practice, the bifurcated end used to inject water into the balloon needs to be cut off. At this time, the balloon is useless and cannot fix the catheter, nor can it compress the puncture site to accelerate tissue hemostasis.

[0004] CN201120039Y discloses a disposable double-cavity bladder puncture fistula tube, which consists of a bladder fistula tube drainage tube head, a puncture needle, a drainage cavity, an air bag, an air bag cavity and a one-way air bag valve. The fistula tube has double cavities, the inner cavity is a drainage and puncture cavity, and the outer cavity is an air bag cavity. It aims at the problems that the existing bladder puncture fistula tube is inconvenient to fix, the insertion length is not easy to accurately control, and the end opening is easy to be blocked. The bladder puncture fistula tube is fixed by inflating the air bag cavity with air or water. However, it obviously fails to solve the defects of the above-mentioned bladder puncture fistula tube, and there are problems such as urine overflow during puncture and accidental injury during puncture. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the defects and shortcomings of the existing bladder puncture fistula tube, such as urine overflow and easy accidental puncture injury, and to provide a bladder puncture fistula tube.

[0006] The purpose of the present invention is to provide a bladder puncture and fistula assembly.

[0007] Another object of the present invention is to provide a working method of a bladder puncture and fistula assembly.

[0008] The above-mentioned purpose of the present invention is achieved through the following technical solutions:

[0009] A bladder puncture fistula tube comprises a puncture sleeve, a puncture device and an indwelling fistula tube. The puncture device and the indwelling fistula tube can be movably inserted and pulled out and embedded in the puncture sleeve. The tail of the puncture sleeve is provided with a cross-shaped valve.

[0010] Conventional bladder puncture fistula tubes are prone to urine outflow due to changes in pressure after successful puncture. The puncture sleeve of the present invention is nested on the periphery of the puncture sleeve. When the puncture device successfully punctures, urine will only flow into the puncture sleeve, and because of the blocking of the cross-shaped flap, it cannot be retained outside to pollute the surrounding environment, nor will it cause a huge change in the pressure of the entire puncture environment. The center of the flap is cross-cut, which increases the safety of puncture while reducing the incidence of urine spraying that pollutes the surrounding environment and personnel.

[0011] The tail of the puncture cannula contains a cross-cut valve to prevent urine leakage. When the puncture tube core is pulled out, urine will not spray out because of the valve at the tail end of the puncture cannula, which further avoids the problem of sudden urine spraying during the operation. At the same time, the cross-cut membrane can be stretched inward and outward by the fistula tube when the indwelling fistula tube is inserted in the next step, which does not hinder the insertion of the fistula tube. It is easy to operate and has good closure.

[0012] Preferably, the puncture cannula is made of a transparent material. After the puncture is successful, urine can be observed filling the puncture cannula, which is convenient for judging whether the puncture is successful.

[0013] Preferably, the cross-shaped flap is made of a flexible deformable material. The flap is a soft material and can be stretched open by the insertion of a hard object.

[0014] Preferably, the puncture device includes a puncture core and a puncture core protection device, the puncture core protection device includes a puncture core protection sleeve, a limiting device and a retractable elastic device, the puncture core protection sleeve is nested in the periphery of the puncture core, the retractable elastic device is connected to the puncture core protection sleeve, and is used to control the retractable displacement of the puncture core protection sleeve, the limiting device is formed by the peripheral extension of the puncture core, and is used to limit the retractable displacement of the puncture core protection sleeve.

[0015] A puncture tube core protection device is arranged on the periphery of the puncture device, wherein the puncture tube core protection sleeve is nested outside the puncture tube core to prevent the puncture head from damaging the inner wall of the bladder and the tissues and organs around the bladder, such as the bladder mucosa, prostate, seminal vesicle, etc. during the puncture process and after the puncture is successful.

[0016] The telescopic elastic device can be a spring, one end of which is fixed to the top of the puncture device and the other end is fixed to the top of the puncture core protection sleeve. The upward and downward movement of the puncture core protection sleeve is controlled by compressing and releasing the spring, thereby controlling the puncture of the puncture core.

[0017] The limit device can control the displacement of the puncture tube core protection sleeve to prevent excessive retraction or excessive rebound beyond the actually required range value.

[0018] Preferably, the limit device includes an upper limit portion and a lower limit portion. The upper limit portion is arranged at the uppermost end of the movable range of the puncture core protection sleeve to control the insertion depth of the puncture core during puncture to prevent excessive retraction. The lower limit portion is arranged at the lowermost end of the movable range of the puncture core protection sleeve to prevent excessive rebound.

[0019] Preferably, the indwelling fistula tube is a double-cavity structure with one end open, including a drainage cavity in the middle of the tank body and a balloon cavity in the outer circumferential layer of the drainage cavity, an opening is provided at the closed end of the drainage cavity, and a balloon is provided at the closed end of the balloon cavity.

[0020] The tail end of the traditional double-lumen balloon catheter is bifurcated and cannot be directly inserted through the puncture cannula, and after insertion, the position cannot be fixed and compression and hemostasis cannot be performed. The indwelling fistula tube of the present invention can be directly inserted into the bladder through the puncture cannula, and the balloon inflator used in conjunction with it is used to inflate the balloon at the front section of the bladder fistula tube to fix the bladder fistula tube in the bladder.

[0021] The drainage cavity in the middle of the double-cavity structure can allow urine to flow out after puncture, and the air bag cavity in the outer circumferential layer of the drainage cavity can be filled with other materials or liquids to expand the balloon when the balloon needs to be inflated to increase the volume of the closed section of the indwelling fistula tube, thereby fixing the indwelling fistula tube well in its surgical position.

[0022] Preferably, the openings include a main opening located at the top of the closed end of the drainage cavity and side openings on both sides. The drainage cavity (urine catheter) is provided with multiple openings to prevent the urinary catheter from being completely blocked after one opening is blocked.

[0023] The present invention also protects a bladder puncture fistula assembly, comprising the bladder puncture fistula tube, a ring-shaped nozzle syringe and a drainage bag, wherein the ring-shaped nozzle syringe is used for balloon cavity injection and inflation, and the drainage bag is used for connecting the drainage cavity of the indwelling fistula tube.

[0024] The opening end of the indwelling fistula tube is provided with an annular balloon water injection port, the connection of the drainage bag is sealed with a cross-shaped incision anti-urine extravasation valve, and the water outlet of the open annular syringe is annular and can be used in conjunction with the fistula tube.

[0025] Preferably, the center of the water outlet of the annular nozzle syringe is a solid body, and the cross-sectional size of the solid body is consistent with the cross-sectional size of the drainage cavity. The annular nozzle syringe can directly inject water into the double-cavity balloon cavity to fill the airbag, and the central solid body just corresponds to the drainage cavity, so that the injected water will not enter the drainage cavity.

[0026] The drainage bag connector is also annular, with a hollow portion connected to the center of the fistula tube to drain urine, and a solid portion of the tube wall on the periphery with an annular anti-excessive forward insertion structure, which is used to block the balloon water injection channel around the fistula tube to prevent the balloon from retracting during the retention stage of the fistula tube.

[0027] The present invention also protects a working method of a bladder puncture and fistula assembly, comprising the following steps:

[0028] S1. Assemble the puncture cannula and the puncture device, insert the puncture device into the puncture cannula, and perform the puncture operation;

[0029] S2. After successful puncture, remove the puncture device, insert an indwelling fistula tube, use a ring-shaped syringe to inject water into the balloon cavity until the balloon is filled, and fix the indwelling fistula tube;

[0030] S3. Clamp the closed end opening of the drainage cavity of the indwelling fistula tube, pull out the ring-shaped syringe, withdraw the puncture cannula, connect the connector drainage bag, and complete the puncture.

[0031] In S3, use hemostat to clamp the distal end of the indwelling fistula tube to seal the drainage channel and water injection channel, withdraw the puncture cannula to between the skin and the hemostat, clamp the indwelling fistula tube again close to the skin, remove the distal clamping hemostat, completely withdraw the puncture cannula, connect the connector drainage bag, and complete the puncture.

[0032] Among them, the vascular clamp commonly used in clinical practice in S3 clamps the distal end of the bladder fistula tube in turn, and after the puncture cannula is withdrawn outside the skin, clamp the proximal end of the skin, withdraw the puncture cannula from the distal end of the fistula tube, connect it to the drainage bag with a specific special connector, loosen the hemostatic clamp and stick the Y-shaped gauze block, and the puncture is completed.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The present invention provides a bladder puncture fistula tube. The bottom end of the puncture sleeve is provided with a cross-shaped valve. When the puncture tube core is pulled out, urine will not be sprayed out because of the blocking of the valve at the tail end of the puncture sleeve. At the same time, the cross-cut membrane can be stretched inward and outward by the fistula tube when the indwelling fistula tube is inserted in the next step, so the insertion of the fistula tube is not hindered.

[0035] The puncture device of the bladder puncture fistula tube of the present invention comprises a puncture tube core protection device, wherein the puncture tube core protection sleeve is nested outside the puncture tube core to prevent the puncture head from damaging the inner wall of the bladder and the tissues and organs around the bladder, such as the bladder mucosa, prostate, seminal vesicle, etc. during the puncture process and after the puncture is successful. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the puncture cannula structure.

[0037] Figure 2 It is a schematic diagram of the structure when the cross-shaped valve at the tail of the puncture cannula is closed.

[0038] Figure 3 It is a schematic diagram of the structure when the cross-shaped valve at the tail of the puncture cannula is half-open.

[0039] Figure 4 It is a schematic diagram of the structure of the puncture core in the puncture state.

[0040] Figure 5 It is a schematic diagram of the structure of the puncture core after successful puncture and its natural state.

[0041] Figure 6 This is a schematic diagram of the structure of the fistula tube when the balloon is not inflated.

[0042] Figure 7 Schematic diagram of the structure of the fistula tube when the balloon is inflated.

[0043] Figure 8 It is a schematic diagram of the structure of a ring-shaped mouth syringe.

[0044] Fig. 9 A side view of the open end of a ring-mouth syringe.

[0045] Fig.10 It is a schematic diagram of the drainage bag connection structure.

[0046] Fig.11 It is a schematic diagram of the longitudinal section structure of the drainage bag connection part. DETAILED DESCRIPTION

[0047] The present invention is further described below in conjunction with specific embodiments, but the embodiments do not limit the present invention in any form. Unless otherwise specified, the raw materials and reagents used in the embodiments of the present invention are conventionally purchased raw materials and reagents.

[0048] Example 1

[0049] A cystoscopic fistula tube, such as Figure 1-7, including a puncture cannula 1, a puncture device 2 and an indwelling fistula tube 3, the puncture device and the indwelling fistula tube can be movably inserted and pulled out and embedded in the puncture cannula, and a cross-shaped valve 4 is provided at the tail of the puncture cannula, such as Figure 1-3 As shown, the puncture device 2 includes a puncture core 4 and a puncture core protection device 5, the puncture core protection device 5 includes a puncture core protection sleeve 6, a limiting device 7 and a retractable elastic device 8, the puncture core protection sleeve is nested outside the puncture core, the retractable elastic device is connected to the puncture core protection sleeve, and is used to control the telescopic displacement of the puncture core protection device, the limiting device is formed by the peripheral epitaxial phase of the puncture core, and is used to limit the telescopic displacement of the puncture core protection device, as shown in FIG. Figure 4-5 As shown, the limiting device 7 includes an upper limiting portion 9 and a lower limiting portion 10, and the indwelling fistula tube 3 is a double-lumen structure with one end open. Figure 6-7 As shown, it includes a drainage cavity 11 in the middle of the tank body and a balloon cavity (water injection channel) 12 in the outer circumferential layer of the drainage cavity, an opening 13 is provided at the closed end of the drainage cavity, and a water-filled balloon 14 is provided at the closed end of the water injection channel. The openings include a main opening 15 located at the top of the closed end of the drainage cavity and side openings 16 on both sides.

[0050] Example 2

[0051] A bladder puncture and ostomy assembly comprises a bladder puncture and ostomy tube, a ring-shaped syringe 17 and a drainage bag 18. The bladder puncture and ostomy tube comprises a puncture sleeve 1, a puncture device 2 and an indwelling ostomy tube 3. The puncture device and the indwelling ostomy tube can be movably inserted and pulled out and embedded in the puncture sleeve. A cross-shaped flap 4 is provided at the tail of the puncture sleeve. Figure 1-3 As shown, the puncture device 2 includes a puncture core 5 and a puncture core protection device 6, the puncture core protection device 6 includes a puncture core protection sleeve 7, a limiting device 8 and a retractable elastic device 9, the puncture core protection sleeve is nested outside the puncture core, the retractable elastic device is connected to the puncture core protection sleeve, and is used to control the telescopic displacement of the puncture core protection device, the limiting device is formed by the peripheral epitaxial phase of the puncture core, and is used to limit the telescopic displacement of the puncture core protection device, as shown in FIG. Figure 4-5 As shown, the limiting device 8 includes an upper limiting portion 10 and a lower limiting portion 11, and the indwelling fistula tube 3 is a double-lumen structure with one end open. Figure 6-7 As shown, it includes a drainage cavity 12 in the middle of the tank body and a balloon cavity (water injection channel) 13 on the outer circumferential layer of the drainage cavity. An opening 14 is provided at the closed end of the drainage cavity, and a balloon 15 is provided at the closed end of the water injection channel. The opening 14 includes a main opening 16 located at the top of the closed end of the drainage cavity and side openings 17 on both sides. The water outlet 18 of the annular mouth syringe 18 is a solid body 19 in the center, and the cross-sectional size of the solid body is consistent with the cross-sectional size of the drainage cavity, as shown in FIG. Figure 8-9 As shown, the drainage bag is Figure 10-11As shown, the connector is also annular, with a hollow portion 22 connected to the center of the fistula tube to drain urine, and a solid portion of the tube wall with an annular anti-excessive forward insertion structure 23 on the periphery, which is used to block the balloon water injection channel around the fistula tube to prevent the balloon from retracting during the indwelling stage of the fistula tube.

[0052] A working method of a bladder puncture and fistula assembly comprises the following steps:

[0053] S1. Assemble the puncture cannula and the puncture device, insert the puncture device into the puncture cannula, and perform the puncture operation;

[0054] S2. After successful puncture, remove the puncture device, insert an indwelling fistula tube, use a ring-shaped syringe to inject water into the balloon cavity until the balloon is filled, and fix the indwelling fistula tube;

[0055] S3. Clamp the distal end of the indwelling fistula tube with a hemostat to seal the drainage channel and the water injection channel. Withdraw the puncture cannula to between the skin and the hemostat, clamp the indwelling fistula tube again close to the skin, remove the distal clamping hemostat, completely withdraw the puncture cannula, connect the connector drainage bag, and complete the puncture.

[0056] Among them, the vascular clamp commonly used in clinical practice in S3 clamps the distal end of the bladder fistula tube in turn, and after the puncture cannula is withdrawn outside the skin, clamp the proximal end of the skin, withdraw the puncture cannula from the distal end of the fistula tube, connect it to the drainage bag with a specific special connector, loosen the hemostatic clamp and stick the Y-shaped gauze block, and the puncture is completed.

[0057] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A bladder puncture fistula tube, comprising a puncture sleeve (1), a puncture device (2) and an indwelling fistula tube (3), wherein the puncture device and the indwelling fistula tube can be movably inserted and removed and embedded in the puncture sleeve, and characterized in that: The tail of the puncture cannula is provided with a cross-shaped valve (4). The puncture device (2) comprises a puncture core (5) and a puncture core protection device (6), wherein the puncture core protection device (6) comprises a puncture core protection sleeve (7), a limiting device (8) and a retractable elastic device (9), wherein the puncture core protection sleeve is nested in the periphery of the puncture core, the retractable elastic device is connected to the puncture core protection sleeve and is used to control the retractable displacement of the puncture core protection sleeve, and the limiting device is formed by the outer periphery of the puncture core and is used to limit the retractable displacement of the puncture core protection sleeve.

2. The cystoscopic fistula catheter according to claim 1, characterized in that: The cross-shaped flap is made of a flexible deformable material.

3. The cystoscopic fistula catheter according to claim 1, characterized in that: The limiting device (8) comprises an upper limiting portion (10) and a lower limiting portion (11).

4. The cystoscopic fistula catheter according to claim 1, characterized in that: The indwelling fistula tube (3) is a double-lumen structure with one end open, comprising a drainage cavity (12) in the middle of the tank body and a balloon cavity (13) in the outer circumferential layer of the drainage cavity, an opening (14) being provided at the closed end of the drainage cavity, and a balloon (15) being provided at the closed end of the balloon cavity.

5. The cystoscopic fistula catheter according to claim 4, characterized in that: The openings include a main opening (16) located at the top of the closed end of the drainage cavity and side openings (17) on both sides.

6. A cystoscopic fistula assembly, characterized in that: It comprises the bladder puncture fistula tube as claimed in any one of claims 1 to 5, a ring-shaped nozzle syringe (18) and a drainage bag (19), wherein the ring-shaped nozzle syringe is used for balloon cavity injection inflation, and the drainage bag is used for connecting the drainage cavity of the indwelling fistula tube.

7. The cystoscopic fistula assembly according to claim 6, characterized in that: The center of the water outlet (20) of the annular-mouth syringe (18) is a solid body (21), and the cross-sectional size of the solid body is consistent with the cross-sectional size of the drainage cavity.

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