CN201759704U

CN201759704U - Ureteral stent tube

Info

Publication number: CN201759704U
Application number: CN2010202837982U
Authority: CN
Inventors: 鄢俊安; 李为兵; 沈文浩
Original assignee: First Affiliated Hospital of TMMU
Current assignee: Third Military Medical University TMMU; First Affiliated Hospital of TMMU
Priority date: 2010-08-06
Filing date: 2010-08-06
Publication date: 2011-03-16
Anticipated expiration: 2020-08-06

Abstract

The utility model discloses a ureteral stent tube which comprises a tube body and hooks arranged on both ends of the tube body, wherein the hooks are in a spiral structure. When the hooks of the ureteral stent tube are in a spiral structure and are respectively hooked in the pelvis and the bladder, and the contact area between the hooks and the pelvis or the bladder is great; moreover, each spiral coil of the spiral structures can be clamped on the inner wall of the pelvis or the bladder, so that shifting is not easy to occur. The ureteral stent tube is firmly and stably fixed and can effectively reduce complications.

Description

A kind of endoureteral stent pipe

Technical field

This utility model relates to a kind of medical apparatus and instruments, is specifically related to a kind of endoureteral stent pipe.

Background technology

The endoureteral stent pipe has another name called two " J " pipe, pigtail pipe, is postoperative ureter support, urine drainages etc. such as a kind of medical apparatus and instruments commonly used in the Urology Surgery operation, main ureter, renal pelvis.The endoureteral stent pipe of domestic and international application is made of polyurethane usually at present, has shape memory function, two ends bend to elastic ring under naturalness, and in order to place renal pelvis and bladder to play fixation, the centre is a straight pipe type respectively, tube wall is provided with aperture, it plays the inner support drainage for placing ureteral part, that is expands ureter with it, so that by ureteral wriggling, calculus and urine enter bladder along inside and outside the pipe.When inserting, earlier insert a seal wire through cystoscopic operating cavity, be enclosed within outside the seal wire the endoureteral stent pipe is stretching, send into corresponding site along seal wire, extract seal wire out, the endoureteral stent pipe resiles, and the two ends elastic ring is hung on renal pelvis and bladder respectively, if will take out, under cystoscope, get final product from the extraction of bladder end.The endoureteral stent pipe is inserted conveniently, and definite effect so application is very extensive clinically, yet finds that in clinical use following problem appears in endoureteral stent pipe easily:

(1) endoureteral stent Guan Shangyi: it is very few that bladder is inserted in endoureteral stent pipe lower end, and the hypomere bending is not enough, and VUR wriggling and endoureteral stent pipe stimulation bladder contraction slowly upwards bounce back the endoureteral stent pipe and move.

(2) the endoureteral stent pipe is displaced downwardly to intravesical: it is not enough that the patient worries to be placed into intravesical length, and renal pelvis end endoureteral stent pipe is inserted too short, and because patient's activity and gravity factor, the endoureteral stent pipe moves down and drops to intravesical.

When above-mentioned situation takes place, but endoureteral stent pipe retractable ureter cause difficulty in decannulation or take off fully losing drainage into bladder, and can cause severe complications.

The basic reason that the problems referred to above appear in existing endoureteral stent pipe easily is, the fixing main elastic ring that relies on two ends of endoureteral stent pipe position, the elastic ring at two ends forms a hook-shaped and is hung in renal pelvis and bladder, but the fixedly contact area of hook is little, and the whole pipe of endoureteral stent pipe is softish, and therefore the maintenance energy of hook is limited, and easy deformation moves, particularly insert when dark easier coming off when hook.

The utility model content

In view of this, the purpose of this utility model be to provide a kind of can be effectively fixing, prevent the endoureteral stent pipe that is shifted.

Endoureteral stent pipe of the present utility model comprises body and the hook that is arranged at the body two ends, and described hook is a spiral-shaped structure.

Further, the axis of described spiral-shaped structure and body are 30～90 ° of angles;

Further, the spiral number of turns of described spiral-shaped structure is 3 circles, and screw diameter is 1.5～2cm.

The beneficial effects of the utility model are: the hook of endoureteral stent pipe of the present utility model is a spiral-shaped structure, when it is hung on renal pelvis and intravesical respectively, the contact area of hook and renal pelvis or bladder is very big, and each spiral coil of spiral-shaped structure can be stuck on the inwall of renal pelvis or bladder, therefore be difficult for being shifted, the endoureteral stent pipe is fixed stable, can effectively reduce complication.

Description of drawings

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing this utility model is described in further detail, wherein:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is user mode figure of the present utility model.

The specific embodiment

Hereinafter with reference to accompanying drawing, preferred embodiment of the present utility model is described in detail.

As shown in Figure 1, endoureteral stent pipe of the present utility model comprises body 1 and the hook 2 that is arranged at body 1 two ends, and described hook 2 is a spiral-shaped structure.

In the present embodiment, the axis of described spiral-shaped structure and body 1 are 30～90 ° of angles; The hook 2 of this angle is not easy to come off when being hung on renal pelvis 3 or bladder 4 more.

In the present embodiment, the spiral number of turns of described spiral-shaped structure is 3 circles, and screw diameter is 1.5～2cm, and with respect to the cavity of renal pelvis 3 and bladder 4, this size is comparatively suitable.

During use, insert a seal wire through cystoscopic operating cavity earlier, with hook 2 stretching being enclosed within outside the seal wire of this utility model endoureteral stent pipe, send into corresponding site along seal wire, extract seal wire out, hook 2 resiles, the spiral-shaped structure of hook 2 is hung on renal pelvis 3 and bladder 4 respectively, as shown in Figure 2.If will take out, under cystoscope, get final product from the extraction of bladder end.

Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although by this utility model being described with reference to preferred embodiment of the present utility model, but those of ordinary skill in the art is to be understood that, can make various changes to it in the form and details, and the spirit and scope of the present utility model that do not depart from appended claims and limited.

Claims

1. endoureteral stent pipe comprises body (1) and is arranged at the hook (2) at body (1) two ends that it is characterized in that: described hook (2) is a spiral-shaped structure.

2. endoureteral stent pipe according to claim 1 is characterized in that: the axis of described spiral-shaped structure and body (1) are 30～90 ° of angles.

3. endoureteral stent pipe according to claim 1 and 2 is characterized in that: the spiral number of turns of described spiral-shaped structure is 3 circles, and screw diameter is 1.5～2cm.