CN215309557U

CN215309557U - High-sealing leakage-proof nephrostomy tube

Info

Publication number: CN215309557U
Application number: CN202121716467.8U
Authority: CN
Inventors: 李�浩; 王少刚; 刘继红
Original assignee: Tongji Medical College of Huazhong University of Science and Technology
Current assignee: Tongji Medical College of Huazhong University of Science and Technology
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2021-12-28
Anticipated expiration: 2031-07-27

Abstract

The utility model discloses a high-tightness anti-leakage nephrostomy tube, which comprises a drainage tube capable of being inserted into a renal pelvis of a patient, wherein a liquid-filled balloon is arranged on the tube wall of the head part of the drainage tube in a surrounding manner, and an inner cavity of the drainage tube is provided with a urine drainage channel and a balloon liquid-filling channel which are mutually independent along the length direction; the front end of the urine drainage channel penetrates through the liquid-filled balloon and is provided with a urine drainage hole, and the tail end of the urine drainage channel can be connected with the urine storage bag; the front end of the balloon liquid injection channel is connected with the inner cavity of the liquid-filled balloon, the rear end of the balloon liquid injection channel is connected with one end of a liquid injection hose, the other end of the liquid injection hose is provided with a one-way injection connector with external threads and a nut screw cap with internal threads, and external threads of the one-way injection connector are tightly matched with internal threads of the nut screw cap, so that double-stage sealing is formed for liquid in the liquid-filled balloon. The liquid leakage in the saccule can be prevented, the risk of falling of the fistulation tube is avoided, and the strain and the medical expense burden of a patient who frequently goes to and fro a hospital are reduced.

Description

High-sealing leakage-proof nephrostomy tube

Technical Field

The utility model relates to an auxiliary medical appliance used in urology surgery, in particular to a high-tightness leakage-proof nephrostomy tube.

Background

Urological surgery has a large number of patients in clinic because ureteral obstruction requires a long-term wearing of a nephrostomy tube. The nephrostomy tube can replace a ureter to directly drain urine generated by the kidney from the waist to the outside of the body, thereby protecting the kidney function from being damaged. For these patients, the nephrostomy tube is a life-saving tube, and if the nephrostomy tube is blocked or falls off, the patient needs to go to a doctor immediately, otherwise acute renal insufficiency is easy to occur, and the patient is seriously threatened.

In order to prevent the nephrostomy tube from falling off, the nephrostomy tube with a liquid-filled balloon at the head is mostly adopted at present. This nephrostomy tube is similar to a traditional urinary catheter, having two channels: one is a urine drainage channel and the other is a balloon injection channel. The rear end of the balloon liquid injection channel is provided with an injection hole with a one-way valve, and after the nephrostomy tube is inserted into the renal pelvis of a patient, a small amount of liquid is injected into the balloon through the injection hole to expand the balloon, so that the nephrostomy tube can be fixed in the kidney. Theoretically, the liquid in the balloon cannot leak out of the injection hole. However, in clinical practice, there are still a number of patients who experience shedding of the nephrostomy tube due to the reduction of fluid in the balloon. The reason is that the leakproofness of the injection hole at the rear part of the nephrostomy tube is poor, and liquid in the saccule can be gradually seeped out from the injection hole, so that the saccule gradually becomes small, the effect of fixing the fistulation tube is lost, and the risk of falling of the fistulation tube is increased.

To address the above problems, medical personnel typically order the patient to visit the hospital at intervals to replenish the balloon with fluid. However, this operation will certainly increase the patient's trouble: because the sealing performance of the injection hole of each nephrostomy tube is different, the liquid in the saccule of some nephrostomy tubes can leak out quickly, and the nephrostomy tubes can fall off when the liquid is not supplemented; the balloon leakage problem can not occur in some kidney fistulation tubes, and the patient does not need to go to a hospital to supplement liquid into the balloon.

Therefore, the medical staff has been trying to find a renal fistula catheter which can prevent the liquid in the balloon from seeping out and reduce the risk of the fistula catheter falling off so as to relieve the pain and burden of the patient, but no satisfactory result is achieved at present.

Disclosure of Invention

The utility model aims to overcome the defects in the background technology, and provides a high-tightness leakage-proof kidney fistulization tube which has a simple and small structure, is convenient and quick to use, can prevent liquid in a balloon from leaking, avoids the risk of falling of the fistulization tube, and reduces the labor and medical expense burden of a patient who frequently comes to and goes to a hospital.

In order to achieve the purpose, the high-tightness leakage-proof nephrostomy tube designed by the utility model comprises a drainage tube which can be inserted into a renal pelvis of a patient, a liquid-filled balloon is arranged on the tube wall of the head part of the drainage tube in a surrounding manner, and an inner cavity of the drainage tube is provided with a urine drainage channel and a balloon liquid injection channel which are mutually independent along the length direction; the front end of the urine drainage channel penetrates through the liquid-filled balloon and is provided with a urine drainage hole, and the tail end of the urine drainage channel can be connected with a urine storage bag; the front end of the balloon liquid injection channel is connected with the inner cavity of the liquid-filled balloon, and the rear end of the balloon liquid injection channel is connected with one end of the liquid injection hose; it is characterized in that: the other end of the liquid injection hose is provided with a one-way injection joint with an external thread and a screw cap screwing cover with an internal thread, and the external thread of the one-way injection joint is tightly matched with the internal thread of the screw cap screwing cover, so that double-stage sealing is formed on liquid in the liquid-filled balloon.

Preferably, the bottom of the screw cap is provided with a sealing gasket which is tightly pressed and matched with the end face of the one-way injection connector. Therefore, the one-way valve in the one-way injection connector forms a first seal, the sealing gasket at the bottom of the screw cap forms a second seal, and the thread matching structure of the one-way injection connector and the screw cap forms a third seal, so that liquid leakage can be completely prevented.

Further, the external thread of the one-way injection joint and the internal thread of the screw cap are of an elastic dense thread matching structure. Thus, the sealing effect can be better through the micro deformation of the external thread and the internal thread.

Furthermore, the cross-sectional area of the urine drainage channel is 8-12 times of that of the balloon injection channel. Therefore, the diameter of the urine drainage channel is relatively thick, so that urine in the renal pelvis can be smoothly discharged; the caliber of the balloon liquid injection channel is relatively thin, the injection can be completed, and the occupied space of the inner cavity of the drainage tube is extremely small.

Still further, the one-way injection joint is a joint integrally formed by a PP material, and the screw cap is a screw cap integrally formed by the PP material. The PP plastic is adopted to manufacture the one-way injection connector and the screw cap screwing cover, so that the micro deformation of the thread joint of the two is facilitated, the combination tightness is higher, and the cost is low.

Still further, seal gasket is medical silica gel gasket. The sealing gasket is made of silica gel materials, and the sealing gasket is good in elastic sealing performance, not easy to age and durable.

When the utility model is used, the main body drainage tube of the nephrostomy tube is inserted into the renal pelvis of a patient, the screw cap screw cover on the one-way injection connector is opened, a small amount of liquid is filled in the one-way injection connector, the liquid enters the liquid-filled balloon along the balloon liquid filling channel and is properly expanded, and then the screw cap screw cover and the one-way injection connector are locked and sealed by screw threads, so that the liquid can be blocked in the liquid-filled balloon, and the drainage tube is prevented from falling off. And the urine produced by the patient can flow out of the urine drainage channel through the urine drainage hole and is conveyed into the urine storage bag.

The utility model has the advantages that: the one-way injection joint at the tail part of the nephrostomy tube is designed to be in a threaded structure, and a nut screw cap matched with the one-way injection joint is additionally arranged, so that the sealing performance of the one-way injection joint can be greatly enhanced through the threaded combination of the two, and the risk of leakage of the liquid-filled balloon is reduced. Particularly, after a dense thread matching structure is optimized and a sealing gasket is additionally arranged at the bottom of a screw cap screw cover, a multi-insurance high sealing effect can be achieved, and the liquid leakage in the balloon is completely avoided, so that the kidney fistulation tube is prevented from falling off from the body of a patient, the labor and medical cost of the patient who frequently comes and goes to a hospital are reduced, the working intensity of medical staff is reduced, and medical resources are saved. Meanwhile, the utility model has simple structure, convenient use and low cost, and is easy to popularize and apply in the urology surgery.

Drawings

Fig. 1 is a schematic perspective view of a high-tightness leakage-proof nephrostomy tube.

Fig. 2 is a schematic sectional view showing an enlarged structure of the nephrostomy tube shown in fig. 1.

The components in the figures are numbered as follows: a urine drainage hole 1; a liquid-filled balloon 2; a drainage tube 3 (wherein, a urine drainage channel 3.1 and a saccule liquid injection channel 3.2); a liquid injection hose 4; a one-way injection connector 5; a nut screw cap 6; and a sealing gasket 7.

Detailed Description

The utility model is described in further detail below with reference to the figures and specific examples, which should not be construed as limiting the utility model.

The high-tightness leakage-proof nephrostomy tube shown in the figure is provided with a drainage tube 3 which can be inserted into a renal pelvis of a patient, a liquid-filled balloon 2 is arranged on the tube wall of the head part of the drainage tube 3 in a surrounding way, and the liquid-filled balloon 2 is made of rubber materials with better expansion performance. The inner cavity of the drainage tube 3 is divided into a urine drainage channel 3.1 and a sacculus liquid injection channel 3.2 which are mutually independent by a diaphragm along the length direction, wherein the caliber of the urine drainage channel 3.1 is far larger than that of the sacculus liquid injection channel 3.2, so that the requirement of smooth urine drainage can be met. In this embodiment, the cross-sectional area of urine drainage channel 3.1 is 8 ~ 12 times of the cross-sectional area of sacculus priming channel 3.2, and sacculus priming channel 3.2 is wherein along 3 side outer walls of drainage tube inlays from the structure, and the space occupied in 3 inner chambers of drainage tube is minimum, and this has also further ensured that the urine drainage is unobstructed.

The front end of the urine drainage channel 3.1 penetrates through the liquid-filled saccule 2, the side wall of the head of the urine drainage channel is provided with a plurality of urine drainage holes 1, and the tail end of the urine drainage channel 3.1 can be connected with a urine storage bag (not shown in the figure); the front end of the balloon liquid injection channel 3.2 is communicated with the inner cavity of the liquid-filled balloon 2, the rear end of the balloon liquid injection channel 3.2 is connected with one end of a liquid injection hose 4, and the other end of the liquid injection hose 4 is connected with a one-way injection joint 5 with external threads. The one-way injection connector 5 is provided with a screw cap 6 with internal threads, and the bottom of the screw cap 6 is provided with a sealing gasket 7. The nut and the screw cap 6 are screwed tightly to ensure that the internal thread of the nut and the external thread of the one-way injection joint 5 are tightly matched, and the liquid in the liquid-filled balloon 2 can be sealed in the nut and the screw cap. In this embodiment, the unidirectional injection connector 5 and the nut screw cap 6 are integrally formed by using a PP material, the sealing gasket 7 is a silica gel gasket, and the inherent characteristics of the PP material can ensure that the unidirectional injection connector 5 and the nut screw cap 6 have an elastic dense thread matching structure.

When the utility model is used, the main drainage tube 3 of the nephrostomy tube is inserted into the renal pelvis of a patient, the screw cap screwing cover 6 on the one-way injection joint 5 is opened, a small amount of liquid is filled through the one-way injection joint 5, the liquid enters the liquid-filled balloon 2 along the balloon liquid filling channel and is properly expanded, then the screw cap screwing cover 6 is locked with the one-way injection joint 5 through screw threads, and the sealing gasket 7 is tightly pressed on the end surface of the one-way injection joint 5, so that the dense screw thread structure and the sealing gasket can play a role in double-insurance sealing, and the one-way valve contained in the one-way injection joint 5 can ensure that the liquid is completely blocked in the liquid-filled balloon 2 to prevent the drainage tube 3 from falling off. And the urine produced by the patient can easily flow out of the urine drainage channel 3.1 through the urine drainage hole 1 and is conveyed into the urine storage bag.

In conclusion, by means of the technical scheme, the sealing performance of the balloon injection joint of the nephrostomy tube can be effectively improved, the risk of leakage of the balloon is reduced, the nephrostomy tube is prevented from falling off, the pain of a patient in going to and going to a hospital and the burden of medical expenses are relieved, the working strength of medical staff is relieved, and medical resources are saved. Meanwhile, the utility model has simple structure, convenient use and low cost, and is easy to popularize and apply in the urology surgery.

The above description is only exemplary of the present invention and should not be taken as limiting the utility model, as any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-sealing anti-leakage nephrostomy tube comprises a drainage tube (3) which can be inserted into a renal pelvis of a patient, wherein a liquid-filled balloon (2) is arranged on the tube wall of the head part of the drainage tube (3) in a surrounding manner, and an inner cavity of the drainage tube (3) is provided with a urine drainage channel (3.1) and a balloon liquid injection channel (3.2) which are mutually independent along the length direction; the front end of the urine drainage channel (3.1) penetrates through the liquid-filled saccule (2) and is provided with a urine drainage hole (1), and the tail end of the urine drainage channel (3.1) can be connected with a urine storage bag; the front end of the balloon liquid injection channel (3.2) is connected with the inner cavity of the liquid-filled balloon (2), and the rear end of the balloon liquid injection channel (3.2) is connected with one end of the liquid injection hose (4); the method is characterized in that: the other end of the liquid injection hose (4) is provided with a one-way injection joint (5) with external threads and a screw cap screwing cover (6) with internal threads, and the external threads of the one-way injection joint (5) are tightly matched with the internal threads of the screw cap screwing cover (6), so that double-stage sealing is formed for liquid in the liquid-filled balloon (2).

2. A high-leak-proof nephrostomy tube according to claim 1, wherein: and a sealing gasket (7) which is tightly abutted and press-fitted with the end face of the one-way injection connector (5) is arranged at the bottom of the screw cap screwing cover (6).

3. A high-sealability leak-proof nephrostomy tube according to claim 1 or 2, characterized in that: the external thread of the one-way injection joint (5) and the internal thread of the screw cap screwing cover (6) are of an elastic dense thread matching structure.

4. A high-sealability leak-proof nephrostomy tube according to claim 1 or 2, characterized in that: the cross-sectional area of the urine drainage channel (3.1) is 8-12 times of that of the balloon liquid injection channel (3.2).

5. A high-sealability leak-proof nephrostomy tube according to claim 1 or 2, characterized in that: the one-way injection connector (5) is an integrally formed connector made of PP materials, and the screw cap screwing cover (6) is an integrally formed screwing cover made of PP materials.

6. A high-leak-proof nephrostomy tube according to claim 2, wherein: the sealing gasket (7) is a silica gel gasket.