CN110680580A

CN110680580A - A pull out device for ureteral stent

Info

Publication number: CN110680580A
Application number: CN201910986867.1A
Authority: CN
Inventors: 王锐; 武雨琦
Original assignee: Shenzhen University; Shenzhen University General Hospital
Current assignee: Shenzhen University; Shenzhen University General Hospital
Priority date: 2019-10-17
Filing date: 2019-10-17
Publication date: 2020-01-14

Abstract

The invention relates to a pulling-out device for a ureteral stent, which comprises a hollow sleeve and a rigid connecting wire for hanging the ureteral stent; an opening is formed in one end of the sleeve; a first through hole and a second through hole are formed in one end, far away from the opening, of the sleeve; the first through holes and the second through holes are arranged at intervals; the connecting wire comprises a main body part and two free ends arranged at two ends of the main body part; the two free ends respectively penetrate into the sleeve from the first through hole and the second through hole and penetrate out of the opening; the two free ends move towards the direction close to the first through hole and the second through hole, and one end, far away from the free ends, of the main body part arches towards the outer side wall of the sleeve to form a sleeving part for hanging and taking the ureteral stent. The pulling-out device for the ureteral stent has the advantages of simple structure, low manufacturing cost, simplicity and convenience in operation, high operation efficiency and low operation risk.

Description

A pull out device for ureteral stent

Technical Field

The invention relates to medical equipment, in particular to a pulling device for a ureter bracket tube.

Background

In a general operation process, a double J-shaped ureteral stent is usually placed into a human ureter, and after a period of time, the ureteral stent needs to be taken out, wherein a common catheter taking mode is that a cystoscope enters a urethra, and then a grasping forceps is used for grasping the ureteral stent.

Disclosure of Invention

The invention aims to provide an improved pulling device for a ureteral stent.

The technical scheme adopted by the invention for solving the technical problems is as follows: constructing an extracting device for a ureteral stent, which comprises a hollow sleeve and a rigid connecting wire for hanging the ureteral stent;

an opening is formed in one end of the sleeve; a first through hole and a second through hole are formed in one end, far away from the opening, of the sleeve; the first through holes and the second through holes are arranged at intervals;

the connecting wire comprises a main body part and two free ends arranged at two ends of the main body part; the two free ends respectively penetrate into the sleeve from the first through hole and the second through hole and penetrate out of the opening;

the two free ends move towards the direction close to the first through hole and the second through hole, and one end, far away from the free ends, of the main body part arches towards the outer side wall of the sleeve to form a sleeving part for hanging and taking the ureteral stent.

Preferably, the first through hole and the second through hole are respectively arranged on the side wall of the sleeve on the same side and are arranged at intervals along the radial direction of the sleeve.

Preferably, the socket part is provided with a positioning mark.

Preferably, the positioning mark comprises a metal ferrule sleeved on the socket part or a metal wire wound on the socket part.

Preferably, the connection line comprises a memory metal connection line.

Preferably, the end surface of one end of the sleeve far away from the opening is a convex curved surface.

Preferably, the end surface of the sleeve far away from the opening end is provided with a plurality of flow guide holes for guiding or discharging liquid.

Preferably, one end of the sleeve, which is far away from the opening, is provided with a positioning piece which is matched with the bladder inner opening to be positioned.

Preferably, the positioning member comprises an air bag sleeved on the periphery of the sleeve.

Preferably, the length of the connecting line is greater than or equal to twice the length of the bushing;

the sleeve joint part is provided with a telescopic positioning mark.

The device for pulling out the ureter bracket tube has the following beneficial effects: the pulling-out device for the ureteral stent is characterized in that a first through hole and a second through hole are arranged at one end, away from the opening of the sleeve, of each free end of the connecting wire, penetrate into the sleeve and penetrate out of the opening, so that when the ureteral stent is hung and taken, the two free ends can move towards the direction of the first through hole and the second through hole, one end, away from the only end, of the main body portion arches towards the outer side wall of the sleeve to form a sleeving part, the ureteral stent can be hung and taken, and then the sleeve and the ureteral stent are withdrawn from a human body together. The pulling-out device for the ureteral stent has the advantages of simple structure, low manufacturing cost, simplicity and convenience in operation, high operation efficiency and low operation risk.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic view showing a state where a free end of a connecting wire of the withdrawing device for a ureter of the present invention is moved away from the first through hole and the second through hole;

FIG. 2 is a view showing a state where the free end of the connecting wire of the withdrawing device for a urinary stent tube of the present invention is moved close to the first through hole and the second through hole;

fig. 3 is a partial schematic view of the drawing device for a ureter stent of fig. 2.

Detailed Description

For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

Fig. 1 to 3 show some preferred embodiments of the pulling device for a urinary stent tube according to the invention. The pulling-out device for the ureteral stent can be stretched into a human body, can be used for pulling out the ureteral stent, and has the advantages of simple structure, low manufacturing cost, simplicity and convenience in operation, high operation efficiency and low operation risk.

As shown in fig. 1 to 3, further, in some embodiments, the extraction device for a ureteral stent may comprise a cannula 11, and a connection wire 12. The sleeve 11 can be used to guide the withdrawal of the ureteral stent and, in addition, it can assist the connecting wire 12 in withdrawing the ureteral stent. The connecting wire 12 can be inserted into the casing 11, and can be used for hanging the ureteral stent.

Further, in some embodiments, the sleeve 11 may be a hollow structure, and one end thereof may be provided with an opening 111, and the other end thereof may be an end surface 112; the opening 111 is convenient for the connection line 12 to pass out, so that the medical staff can operate the connection line conveniently. The end surface 112 may be disposed at an end of the sleeve 11 away from the opening, i.e. an end extending into a human body, the end surface 112 may be a convex curved surface, and the sleeve 11 may be prevented from scratching the human body by disposing the end surface 112 as the convex curved surface, thereby improving the safety of operation. In some embodiments, the end surface 112 may be provided with a flow guiding hole 1121; the diversion hole 1121 may be one or more, and may be used for introducing perfusate or discharging urine.

Further, in some embodiments, a first through hole 113 and a second through hole 114 may be disposed at an end of the sleeve 11 away from the opening 111; the first through hole 113 and the second through hole 114 are spaced apart. Specifically, in some embodiments, the first through hole 113 and the second through hole 114 may be respectively disposed on the same side wall of the sleeve 11, and they may be spaced apart in the radial direction of the sleeve 11. By disposing the first through hole 113 and the second through hole 114 on the sidewall, the connecting wire 20 can form a sleeve 1211 forming an included angle with the sidewall of the sleeve 11, so as to improve the accuracy of hanging and taking the ureteral stent, facilitate hanging and taking the ureteral stent, and improve the operation efficiency. It is understood that in other embodiments, the first through hole 113 and the second through hole 114 may be disposed on the end surface 112 of the sleeve 11, which is not limited to being disposed on the side wall.

Further, in some embodiments, the connecting wire 12 may be a rigid connecting wire, which can prevent the connecting wire from being deformed and then being restored, thereby facilitating the hanging and taking of the ureteral stent, in some embodiments, it may be made of a metal material, specifically, it may be made of a memory metal, and it is understood that in other embodiments, the connecting wire 12 may not be limited to be made of a memory metal. In some embodiments, the length of the connection wire 12 may be greater than or equal to twice the length of the cannula 11, which may facilitate passage out of the cannula 11 for the convenience of the medical personnel to handle the connection wire 12.

Further, in some embodiments, the connecting wire 12 may include a main body portion 121 and two free ends; the main body 121 can be inserted into the sleeve 11, and it can form the sleeve 1211. The two free ends can penetrate into the cannula 11 from the first through hole 113 and the second through hole 114, respectively, extend along the length direction of the cannula 11, and penetrate out from the opening 111 for the operation of the medical staff.

Before the ureter tube is hung, the two free ends of the connecting wire 12 are inserted into the sleeve 11 from the first through hole 113 and the second through hole 114 and are penetrated out from the opening 111, and are moved away from the first through hole 113 and the second through hole 114, so that the main body part positioned outside the sleeve 11 is tightly attached to the side wall of the sleeve 11, and then the connecting wire 12 and the sleeve 11 are sent into the human body.

As shown in fig. 2 and fig. 3, when the urinary stent is hung, the medical staff can move the two free ends 122 toward the direction close to the first through hole 113 and the second through hole 114, so that the end of the main body 121 away from the free ends 122 is arched toward the outer sidewall of the cannula 11 to form a sleeve 1211, and since the connecting wire 12 is made of memory metal, the sleeve 1211 formed after the connecting wire is not arched can maintain the shape, and thus can be conveniently sleeved on the curled portion of one end of the urinary stent. The catheter may then be withdrawn with the sleeve 11 by pulling the catheter out.

Further, in some embodiments, the sleeve 1211 may be provided with a positioning mark 13; this positioning mark 13 can be convenient for the developing device to track the location, and then is convenient for improve the accuracy of cup jointing, improves operating efficiency. In some embodiments, the positioning mark 13 may be a metal ferrule sleeved on the sleeve 1211. It is understood that in other embodiments, the positioning mark 13 may not be limited to a metal ferrule, but may be a metal wire wound around the sleeve 1211.

Further, in some embodiments, the sleeve 1211 is provided with a telescopic positioning mark for the medical staff to know the releasing degree of the sleeve 1211, and in some embodiments, the telescopic positioning mark may be a scale. It will be appreciated that in other embodiments, the telescoping positioning indicia is not limited to a scale.

Further, in some embodiments, the extraction device for a ureteral stent may further include a positioning member 14; the positioning member 14 is disposed on the sleeve 11, and can be located at an end of the sleeve 11 away from the opening 111, which is convenient for finding the bladder inner opening for positioning, and further convenient for positioning the sleeve 11, thereby improving the operation efficiency. In some embodiments, the positioning member 14 may be a balloon that can be sleeved on the periphery of the sleeve 11, and it is understood that in other embodiments, the positioning member 14 may not be limited to a balloon.

It is to be understood that the foregoing examples, while indicating the preferred embodiments of the invention, are given by way of illustration and description, and are not to be construed as limiting the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several changes and modifications can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.

Claims

1. The pulling-out device for the ureteral stent is characterized by comprising a hollow sleeve (11) and a rigid connecting wire (12) for hanging and taking the ureteral stent;

one end of the sleeve (11) is provided with an opening (111); a first through hole (113) and a second through hole (114) are formed in one end, far away from the opening (111), of the sleeve (11); the first through hole (113) and the second through hole (114) are arranged at intervals;

the connecting wire (12) comprises a main body part (121) and two free ends (122) arranged at two ends of the main body part (121); the two free ends (122) penetrate into the sleeve (11) from the first through hole (113) and the second through hole (114) respectively and penetrate out of the opening (111);

the two free ends (122) move towards the direction close to the first through hole (113) and the second through hole (114), and one end of the main body part (121) far away from the free ends (122) arches towards the outer side wall of the sleeve (11) to form a sleeve joint part (1211) for hanging and taking the ureteral stent.

2. The extraction device for ureteral stent according to claim 1, characterized in that the first through hole (113) and the second through hole (114) are respectively provided on the same side wall of the sleeve (11) and are spaced apart in the radial direction of the sleeve (11).

3. The withdrawing device for the ureteral stent according to claim 2, wherein a position mark (13) is set on the socket portion (1211).

4. The extraction device for a urinary catheter as claimed in claim 3, characterized in that the positioning mark (13) comprises a metal loop around the sleeve (1211) or a metal wire wound around the sleeve (1211).

5. The extraction device for ureteral stent tubes according to claim 1, characterized in that said connection wire (12) comprises a memory metal connection wire.

6. The withdrawal device for urinary catheter set of claim 1, characterized in that the end surface (112) of the end of the sleeve (11) remote from the opening (111) is convexly curved.

7. The device for extracting a ureteral stent according to claim 1, wherein the end surface (112) of the sleeve (11) far away from the opening (111) is provided with a plurality of flow guide holes (1121) for introducing or discharging liquid.

8. The extraction device for ureteral stents according to claim 1, characterized in that the end of the cannula (11) remote from the opening (111) is provided with a positioning element (14) that fits to find the intravesical orifice for positioning.

9. An extraction device for ureteral stent according to claim 8, characterized in that said positioning element (14) comprises a balloon fitted around the periphery of said sleeve (11).

10. The extraction device for ureteral stent according to claim 1, characterized in that the length of the connection line (12) is greater than or equal to twice the length of the sleeve (11);

the sleeve joint part (1211) is provided with a telescopic positioning mark.