CN218391342U - Air bag type positioning support degradable ureteral stent - Google Patents

Abstract

The utility model relates to a gasbag formula location supports degradable ureteral stent, include the support body of making by degradable material, the support body is a double-lumen pipe and includes two each other communicating cavitys: the device comprises a guide tube and an inflation tube, wherein one end of the guide tube is a near-kidney end, and the other end of the guide tube is bent to form an annular fixing ring which is clamped in the bladder and is a bladder end; one end of the inflation tube is provided with a sealing plug, the other end of the inflation tube is an inflation end, the inflation tube is provided with a fixing bag and a supporting bag, and the fixing bag is clamped at the junction of the pelvic part of the ureter and the outer wall of the bladder. The utility model discloses an inflatable fixed bag card is established in ureter entering bladder entrance, and is fixed more firm difficult emergence with the cooperation of annular retainer plate and is removed in ureter, and the support bag that is full of the state can fully support the support point of treating in ureter, and the bladder can directly be discharged in internal degradation after the support body uses and accomplishes, and finally the discharge is external, has avoided the injury to patient's secondary operation.

Description

Air bag type positioning support degradable ureteral stent

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to non-pelvis internal fixation, degradable ureteral stent that can carry out the location and support.

Background

The ureter bracket is an important medical appliance for keeping the ureter unobstructed and preventing ureter stenosis after ureteroscope examination, stone breaking and taking and ureter compression or operation. At present, ureteral stents used clinically are all made of non-degradable materials, and need to be pulled out through a secondary operation after use, so that the operation amount and medical cost are increased, and the risk of secondary damage to the ureter is increased, and therefore, the degradable ureteral stents become the urgent clinical requirements and the direction of research and development of instruments. In addition, because of the particularity of the anatomical structure of the urinary system, the stent inserted from the urethra into the urethra must pass through the narrowest wall of the ureter vesicae and then enter the ureter basin and a part which is wide above the ureter basin and needs to be supported, so that the tube diameter of the ureter stent is limited, the supporting function of the ureter stent is similar to the nominal function, and the occurrence rate of ureteral stenosis after the operation is high.

Disclosure of Invention

The utility model mainly aims at solving the ureter that uses clinically at present and need the secondary operation to take out and cause patient's secondary injury easily, and current support plays the supporting role in the intraductal of ureter wide most and leads to taking place the narrow problem of postoperative ureter easily, provides a gasbag formula location support degradable ureter support.

The utility model adopts the following technical scheme: the utility model provides a gasbag formula location supports degradable ureter support, includes the support body of making by degradable material, the support body is a double lumen pipe including two cavities that each other do not communicate with each other: the device comprises a guide tube and an inflation tube, wherein one end of the guide tube is a kidney-proximal end, and the other end of the guide tube is bent to form an annular fixing ring which is clamped in the bladder to form a bladder end;

the one end of gas tube is equipped with the sealing plug, the other end of gas tube is for aerifing the end, be provided with fixed bag on the gas tube, ureter pelvic part and bladder outer wall juncture are located to fixed bag card, it is equipped with fixed bag inflation hole to correspond fixed bag on the gas tube, be provided with support bag and support bag inflation hole on the gas tube, the support bag sets up between sealing plug and fixed bag.

Furthermore, the outer surface of the guide tube is provided with small holes.

Furthermore, the inflation end of the inflation tube comprises an air tube connected with the inflation tube, a separable connector and a connector, and the connector is used for connecting an air filling device.

Furthermore, the distance between the fixing bag and the scale finishing line at the root of the annular fixing ring is 1.0-2.0cm.

Furthermore, the distance between the highest point of the inflated fixing bag and the inflated supporting bag and the wall of the inflated pipe is less than or equal to 1cm.

The utility model has the advantages of specifically as follows:

(1) The structure is simple, the design is compact, the inflatable fixing bag is clamped at the entrance of the ureter into the bladder and is matched and fixed with the annular fixing ring, so that the bracket body can be fixed in the ureter more stably and is not easy to move, and the inflatable fixing bag has no stimulation to the inner wall of the ureter;

(2) The inflatable supporting bag can play a supporting role in the ureter in an inflated state, and the bracket bodies with different supporting bag positions can be selected according to different supporting points required, so that the clinical problem of local ureteral stenosis caused by ureteral bracket operation is solved;

(3) The ureteral stent made of degradable materials can select the degradable materials according to the required time in clinic, and the harm to patients caused by taking out the ureteral stent in a secondary operation is avoided.

Drawings

Fig. 1 is a section view of the utility model of an air bag type fixed support degradable ureteral stent in use.

Description of reference numerals: the support comprises a support body 1, a guide tube 1-1, an inflation tube 1-2, a fixed bag 2, a supporting bag 3, an annular fixed ring 4, an inflation end 5, an air tube 5-1, a one-way valve 5-2, a separable connector 5-3, a connector 5-4, a small hole 6, a fixed bag inflation hole 7, a supporting bag inflation hole 8, a sealing plug 9 and a scale finishing line 10.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are further described below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be embodied in other ways different from those described herein, and one skilled in the art may similarly generalize without departing from the spirit of the present invention, so that the present invention is not limited to the specific embodiments disclosed below.

The utility model provides a gasbag formula location supports degradable ureteral stent, includes the support body 1 that degradable material made, support body 1 is a double lumen pipe including two cavities that each other do not communicate with each other: the air-permeable ureteral stent comprises a guide tube 1-1 and an inflation tube 1-2, wherein a small hole 6 is arranged on the surface of the guide tube 1-1 and can play a role of air permeability, urine in a ureter can be conveniently leaked when the air-permeable ureteral stent is used, one end of the guide tube 1-1 is bent to form an annular fixing ring 4 which is clamped in the bladder to form a bladder end, the other end of the guide tube 1-1 is a kidney-proximal end, one end of the inflation tube 1-2 is connected with an inflation end 5, a supporting bag 3 is arranged on the upper side of the inflation tube 1-2, the supporting bag 3 cannot completely cover and wrap a stent body 1 when the supporting bag is full, the completely wrapped and covered ureteral cavity is prevented from being sealed, so that broken stone powder is discharged, the fixed bag 2 is arranged on the inflation tube 1-2 at a position which is 1-2cm away from a scale end line 10 at the root of the annular fixing ring 4, the root of the guide tube 1-1 is the position where the tail end of the annular fixing ring begins to be bent, an obvious scale line is marked as a scale end line 10, the position where the air-5-1 is connected with an air pipe 5-1, a separable connector, and a perfusion connector 5-4 device with a plurality of air-5 size is connected with the air-5 size specification, and a perfusion connector, and a perfusion device with a plurality of air-5-4 size specification. The upper end of the inflation tube 1-2 is provided with a sealing plug 9 for preventing air leakage, and the inflation tube 1-2 is provided with inflation holes corresponding to the fixed bag 2 and the supporting bag 3 respectively. The distance between the highest point of the inflated fixed bag 2 and the inflated supporting bag 3 and the wall of the inflated tube is less than or equal to 1cm. The fixing bag 2 is positioned at the position of the ureter basin part close to the bladder orifice and is matched with the annular fixing ring 4 to clamp the bladder orifice, so that the effect of keeping the bracket body stable and not falling into the bladder in the ureter is achieved.

The processing method of the air bag type positioning support degradable ureteral stent comprises the following steps: the method comprises the following steps: (1) According to the time requirement that the ureter needs to be supported, a degradable material meeting rationalization performance and biological conditions is selected; completing a double-cavity bracket body according to the designed pipe diameter by extrusion molding;

(2) Manufacturing an air bag film of the supporting bag and the fixing bag by adopting a film manufacturing process;

(3) One end of the bracket body is taken as a bladder end, the other end of the bracket body is taken as a kidney-proximal end, a length scale line is marked to the bladder end from the kidney-proximal end as a starting point, an obvious scale end line 10 is arranged at the lower end of the guide tube, the guide tube of the bracket body 1 starts to bend at the bladder end at the scale end line to form an annular fixing ring 4, and the bracket body 1 is positioned at the inner side of the annular fixing ring;

(4) The positions of the inflation tubes 1-2 corresponding to the fixed bag 2 and the supporting bag 3 are provided with inflation holes, the prepared supporting bag and the fixed bag film are covered on the surfaces of the inflation holes, the edges of the film are firmly adhered by using an adhesive without air leakage, and the middle of the film is not adhered so that the bag can be formed after inflation and expansion;

(5) A plurality of small air holes are distributed on the surface of the bracket body 1;

(6) The tail end of the inflation tube is sequentially connected with an air tube, a one-way valve, a separable connector and a connector, the connector is connected with the air filling device, and the connector is positioned outside the urethral orifice;

(7) Cutting off the position where the gas-filled tube 1-2 and the scale finishing line 10 at the root of the annular fixed ring 4 are level to form a notch hermetically connected with the gas tube;

(8) After the normal ventilation of the inflation tube is tested, the upper end of the inflation tube 1-2 is blocked by a sealing plug 9, so that the inflation tube 1-2 is not leaked;

(9) And detecting and packaging the processed ureteral stent and sterilizing the ureteral stent by ethylene oxide for later use.

The operation and use method comprises the following steps: clinical medical staff select the ureteral stent made of a proper degradable material according to actual needs, determine points to be supported (such as end-end anastomotic stoma or damaged positions) in the ureter according to clinical conditions, select the stent body containing the support bags 3 consistent with the points to be supported, and the positions of the support bags on the ureteral stent bodies with different specifications are different. The method comprises the steps of conventionally operating a ureteral stent to reach the position from a scale end line of a guide tube to the position of an inner bladder of the ureteral bladder through a urinary tract, stopping pushing the guide tube when the guide tube reaches the position of a scale end line 10, drawing out a guide wire, automatically bending the tail end of the guide tube to form an annular fixing ring 4, connecting an air filling device to a connector 5-4 at the tail end of an inflation tube 1-2, filling air with a preset volume into the inflation tube 1-2, enabling the air to enter a fixing bag and a supporting bag through an inflation hole to be in a full state, observing a push rod of the air filling device, enabling the push rod to be in a static state to be in a normal state when the push rod is not pushed, separating a separable connector by using a separator, and pulling the connector 5-4 to pull the rest out of the body. At this point, after the placement of the stent body 1 is finished, the annular fixing ring 4 and the fixing bag 2 at the bladder end of the guide tube enable the ureteral stent to be clamped and fixed at the inner side and the outer side of the bladder wall, so that the ureter is prevented from slipping into the bladder, and the supporting bag 3 plays a role in supporting the position of a to-be-supported point in a full state. When the stent is placed in the ureter and reaches the degradation time of the materials, the main materials of the ureter are degraded and broken, the stent body is broken into a plurality of sections, the fixing bag and the supporting bag retract the air leakage, and the air leakage is discharged out of the body after being discharged into the bladder along with the broken sections of the stent.

Claims (6)

1. The utility model provides a gasbag formula location supports degradable ureteral stent which characterized in that: including the support body (1) of making by degradable material, support body (1) is a double lumen pipe including two cavities that each other do not communicate with each other: the device comprises a guide tube (1-1) and an inflation tube (1-2), wherein one end of the guide tube (1-1) is a kidney-proximal end, and the other end of the guide tube (1-1) is bent to form an annular fixing ring (4) which is clamped in the bladder to form a bladder end;

one end of gas tube (1-2) is equipped with sealing plug (9), the other end of gas tube (1-2) is for aerifing the end, be provided with fixed bag (2) on gas tube (1-2), aerify the state fixed bag (2) can block and locate ureter basin portion and bladder wall juncture, it is equipped with fixed bag gas cell (7) to correspond fixed bag (2) on gas tube (1-2), be provided with support bag (3) and support bag gas cell (8) on gas tube (1-2), support bag (3) set up between sealing plug (9) and fixed bag (2), aerify the state support bag (3) can be used for supporting the wide most of ureter and treat the strong point.

2. The balloon-type position-support degradable ureteral stent of claim 1, wherein: the outer surface of the guide tube (1-1) is provided with small holes (6).

3. The balloon-type position-support degradable ureteral stent of claim 1, wherein: the inflation end (5) of the inflation tube (1-2) comprises an air tube (5-1) connected with the inflation tube (1-2), a separable connector (5-3) and a connector (5-4), a one-way valve (5-2) is arranged in the air tube, and the connector (5-4) is used for being connected with an air perfusion device.

4. The balloon-type position-support degradable ureteral stent of claim 1, wherein: the distance between the fixed bag (2) and the scale finish line at the root position of the annular fixed ring (4) is 1.0-2.0cm.

5. The balloon-type position-support degradable ureteral stent of claim 1, wherein: the distance between the highest point of the inflated fixed bag (2) and the inflated supporting bag (3) and the wall of the inflated pipe is less than or equal to 1cm.

6. The balloon-type position-support degradable ureteral stent of claim 1, wherein: the number of the supporting bags (3) is at least 1.

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