CN201768005U - Nephrostomy tube - Google Patents

Abstract

The utility model belongs to medical equipment and relates to a nephrostomy tube which is used for minimally invasive percutaneous nephroscopic surgery and is left in the operation channel. It is characterized in that two microporous passages are arranged in the wall layer of the main catheter, and the two passages are respectively connected with the elastic short cavity sac for close positioning and the elastic long cavity sac for compression and hemostasis. After filling, the short elastic cavity compresses the calyceal mucosa, preventing blood from entering the renal pelvis to form blood clots and blocking the drainage tube. The elastic long-cavity sac with a hemostatic drug-coated surface compresses the bleeding site of the wound during the operation to reduce the amount of bleeding on the wound. The tight positioning of the elastic short cavity guarantees the stability of the ostomy tube in place and is not easy to slip and shift. Also, the utility model is provided with a side hole to prevent clogging at the head of the main catheter, which ensures the unimpeded drainage, and these all play beneficial effects for postoperative clinical treatment observation and nursing.

Description

a nephrostomy tube

technical field

The utility model belongs to medical equipment, and relates to a nephrostomy tube, in particular to a nephrostomy tube used for minimally invasive percutaneous nephroscopic surgery, which is placed in an operation channel to suppress bleeding and drain urine. the

Background technique

In the minimally invasive surgical treatment of urinary calculi diseases, the use of nephrostomy tube is very important, especially with the continuous development of modern medicine, minimally invasive surgery in upper urinary tract surgery has gradually become the main treatment method for urinary calculi. For percutaneous nephrolithotomy, you only need to use a puncture needle to directly enter the kidney from the back, pass through a small hole with a diameter of only about 7mm, and remove stones and relieve obstruction under direct vision of the nephroscope with the help of stone removal or stone crushing equipment. A technical and therapeutic approach. The trauma is minimal, effectively reducing the suffering of patients. the

The nephrostomy catheter currently used in minimally invasive percutaneous nephroscopic surgery is a straight catheter with no side hole at the head, and blood clots formed on the bleeding wound after the operation can easily block the drainage nozzle, which is of great concern to the clinic. Treatment brings certain troubles and risks. the

What another class adopts is that the doctor trims out the simple articles for use that 2-3 apertures obtain in the front end sidewall of existing rubber urinary catheter. Although the traditional medical rubber catheter is soft and easy to trim, when it is placed in the operation channel, it is easy to deform due to its soft quality, which affects the drainage effect. Poor drainage is not conducive to clinical medical observation after surgery. The observation of the severity of postoperative hematuria, etc., are directly related to the treatment process and postoperative care of patients. the

On the other hand, the traditional ostomy tube, because it is a long and straight tube, is easy to slip and shift, has poor stability, does not fit closely with the wound surface, and has an unsatisfactory effect of compression and hemostasis. the

Contents of the invention

The technical problem to be solved by this utility model is to overcome the defects of the above-mentioned prior art, aiming to provide a nephrostomy tube that can not only play the role of ideal drainage of urine but also compress and stop bleeding, and at the same time facilitate the clinical observation and treatment of doctors . the

The utility model adopts the following technical solutions: a nephrostomy tube, which is characterized in that: a strip-shaped hollow silicon rubber main conduit, an outer circumference diameter of 16-18Fr, and an inner hole circumference diameter of 10Fr; A first channel and a second channel of micropores parallel to the main conduit are provided;

The head end of the main conduit is open, and there are 2-3 side holes, which are large on the outside and small on the inside, on the circumferential wall of the straight pipe section 5-10mm downward from the end.

The outlet of the head of the first passage is bent, opened on the side wall of the main pipe, and is located at the lower part of the straight pipe section of the main pipe in the axial direction. Deflated and inflatable elastic short cavity, the axial length of the short cavity is 4-8mm, and the volume in the bulging state is 3-8ml;

The outlet of the head of the second channel is bent, opened on the side wall of the main catheter, and is located at the axial lower part of the short cavity, the outlet of the head of the second channel communicates with the periphery of the main catheter wall, and has the ability to shrink, Inflatable long-cavity capsule, the axial length of the long-cavity capsule is 20-40mm, the volume in the bulging state is 2-6ml, and the outer surface is provided with a hemostatic drug coating; 

The main conduit, the first passage, and the second passage are trifurcated in the tail section, and have their own inner and outer walls respectively;

Injection valves are respectively installed at the tail ends of the first channel and the second channel. the

The overall length of the main catheter is 300mm, and the length from the head end to the bifurcation point is 200mm. the

The volume of the short cavity capsule is 5ml, and the axial length is 6mm. the

The capacity of the long lumen capsule is 3ml, and the axial width is 30mm. the

The three side holes are elliptical holes with a length of 3mm and a width of 2mm, which are evenly distributed on the circumferential wall of the straight pipe section at the head of the main conduit. the

The edge of the head end of the main conduit is arc-shaped. the

The injection valve is a disc-shaped flange with a stepped cylinder, and 3-5 raised thin rings are arranged at axial intervals on the outer peripheral surface of the cylinder, and the axial ends of the injection valve are between two inner sink holes Connected by a micropore. the

The material of the injection valve is elastic silicone rubber. the

The utility model is provided with a short-cavity sac which is close to the calices and a long-cavity sac which acts as a hemostatic function in the front part of the nephrostomy tube, and the two sacs respectively press the calices mucosa to prevent blood from entering the renal pelvis and the renal calyces Form a blood clot and compress the renal parenchymal wound, reducing the amount of wound bleeding. In minimally invasive percutaneous nephroscopic surgery, a certain volume of normal saline is filled through the first channel to fill the short-cavity capsule, and then a certain volume of normal saline is filled through the second channel to fill the long-cavity capsule so that it is coated with hemostatic drugs The surface of the ostomy tube is used to compress the bleeding part of the wound during the operation, and then the exposed part of the ostomy tube is fixed on the surface of the human skin by a skin fixer, which ensures the stability of the ostomy tube in place. Also, the utility model is provided with several side holes to prevent blockage at the head of the main catheter, which ensures the unimpeded drainage, and these have played beneficial effects for postoperative clinical treatment observation and nursing. the

Description of drawings

Figure 1 is a schematic diagram of the normal state of the utility model

Figure 2 is a partial enlarged view of Figure 1

Figure 3 is an enlarged view of another part of Figure 1

Fig. 4 is the schematic diagram after filling of the two elastic cavities of the utility model

The serial numbers in the figure are respectively indicated as:

1-main pipe 2-first channel 3-second channel 4-side hole

5-short cavity 6-long cavity 7-injection valve 8-skin fixator

Detailed ways

Below in conjunction with embodiment accompanying drawing, medical principle of the present utility model and clinical application are further described:

Please refer to attached drawing 1, the nephrostomy tube in this case is 300mm in total length, made of elastic medical silica gel, and has three channels in the shape of a trident at the rear 100mm. The main conduit 1 in the middle is the main channel, and two microporous channels, the first channel 2 and the second channel 3, are arranged in the wall layer of the main conduit 1 . The main catheter 1 is a linear channel, which is convenient for inserting a safety guide wire during the second-stage minimally invasive percutaneous nephroscopic surgery, and is not easy to lose the operating channel, which is convenient for clinicians to operate during the operation. the

The outer diameter of the main body of the main catheter 1 is divided into two specifications, 16Fr and 18Fr, and the inner hole diameter is 10Fr. The surface of the ostomy catheter is marked with a length scale, which is convenient for intubation control and observation during the operation. the

In order to improve the situation that single-hole catheter drainage is easy to be blocked, three drainage side holes 4 are provided on the circumferential wall of the 7mm section at the head end of the main catheter 1, and the three side holes are oval holes with a length of 3mm and a width of 2mm, which are evenly distributed On the peripheral wall of the main conduit 1. The setting of the side hole effectively ensures the unimpeded drainage, which is more conducive to postoperative clinical treatment observation and nursing. The edge of the head end of the main catheter 1 is arc-shaped, which is more smooth when the catheter is inserted into human organs. the

The head of the first channel 2 communicates with the elastic short cavity 5 located on the left side of the side hole 4, the axial length of the short cavity is 6mm, and the capacity is 5ml. the

The head of the second channel 3 communicates with the elastic long cavity 6 adjacent to the left side of the short cavity 5. The long cavity has an axial length of 30 mm, a capacity of 3 ml, and a hemostatic drug coating on the outer surface. the

The main conduit 1, the first channel 2, and the second channel 3 present a trident at the tail, and the tail end of the main conduit 1 is the interface connected to the corresponding standard drainage urine bag. The tail ends of the first channel 2 and the second channel 3 on the left and right sides Injection valves 7 are installed respectively. the

The injection valve 7 is made of elastic material silicone rubber, and is a stepped cylinder on the disc flange. On the outer peripheral surface of the cylinder, four raised thin rings are arranged at axial intervals. It is elastically and tightly snapped into the tail ends of the first channel 2 and the second channel 3. The two axial ends of the injection valve are connected by a needle-shaped microhole in the middle of the two inner sink holes. When the corresponding hard syringe needle seat tube is inserted into the counterbore at the flange end, the microhole expands to connect the syringe with the first or second passage to form an injection passage. the

In minimally invasive percutaneous nephroscopic surgery, the operator inserts the head end of the nephrostomy tube into the calices through the operating sheath, withdraws from the operating sheath, and fills the elastic short tube with 5ml of normal saline through the injection valve 7 from the first channel 2. The sac 5 is lightly pulled to make the short elastic sac 5 close to the fornix of the calices, which plays a role of close positioning. Then, pass 3ml of normal saline through another injection valve 7 to fill the elastic long cavity sac 6 from the second channel 3, so that the surface coated with the hemostatic drug compresses the bleeding site of the wound during the operation, and the two sacs are filled and compressed separately. The calyx mucosa prevents blood from entering the renal pelvis to form blood clots and compresses the renal parenchymal wound, reducing the amount of bleeding from the wound. The exposed part of the ostomy tube is fixed on the skin surface of the human body through the skin fixer 8, which ensures the stability of the ostomy tube in place and is not easy to slip and shift. the

Claims (8)

1. kidney fistulation pipe, it is characterized in that: the hollow silicone rubber main pipe of strip (1), excircle directly are 16-18Fr, and endoporus Zhou Jing is 10Fr; In main pipe (1) parietal layer, be provided with micropore first passage (2) and the second channel (3) parallel with main pipe (1);

The head of main pipe (1) is open-ended, has 2-3 side opening (4) on the straight length circumferential wall of the downward 5-10mm in end;

The outlet of first passage (2) head is bending-like, be opened in the sidewall of main pipe (1), and be positioned at the axial bottom of main pipe (1) straight length, the outlet of first passage (2) head was communicated with around a peripheral week of main pipe (1) tube wall, have and to receive elasticity short cavity capsule (5) flat, the energy tympanites, short cavity capsule (5) axial length is 4-8mm, and the capacity of tympanites state is 3-8ml;

The outlet of second channel (3) head is bending-like, be opened in the sidewall of main pipe (1), and be positioned at axially bottom of short cavity capsule (5), the outlet of second channel (3) head was communicated with around a peripheral week of main pipe (1) tube wall, have and to receive the long chamber capsule (6) of elasticity flat, the energy tympanites, long chamber capsule (6) axial length is 20-40mm, and the capacity of tympanites state is 2-6ml, and outer surface is provided with the haemostatic medicament coating;

Main pipe (1) is triadius type with first passage (2), second channel (3) at rear, has inner and outer wall separately respectively;

Tail end at first passage (2), second channel (3) is equipped with injection valve (7) respectively.

2. according to the described kidney fistulation of claim 1 pipe, it is characterized in that: described main pipe (1) total length 300mm, head end is 200mm to bifurcation length.

3. according to the described kidney fistulation of claim 1 pipe, it is characterized in that: the capacity of described short cavity capsule (5) is 5ml, and axial length is 6mm.

4. according to the described kidney fistulation of claim 1 pipe, it is characterized in that: the capacity of described long chamber capsule (6) is 3ml, and axial width is 30mm.

5. according to the described kidney fistulation of claim 1 pipe, it is characterized in that: described three side openings (4) are the elliptical aperture of the wide 2mm of long 3mm, are distributed on main pipe (1) the head straight length circumferential wall.

6. according to the described kidney fistulation of claim 1 pipe, it is characterized in that: the head end edge of main pipe (1) is a circular arc.

7. according to the described kidney fistulation of claim 1 pipe, it is characterized in that: described injection valve (7) is a ladder cylinder for coiling on the class flange, axially spaced-apart is provided with 3-5 protruding fine circle on the outer circumference surface of cylinder, and the axial two ends of injection valve are by a micropore UNICOM in the middle of two interior counterbores.

8. according to the described kidney fistulation of claim 1 pipe, it is characterized in that: described injection valve (7) material is an elastic silicone rubber.

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