阅读说明：本技术 一种盲法输尿管支架管取出装置 (Blind method ureteral stent pipe remove device ) 是由 刘潜 谢明峰 曾林山 刘海金 刘建平 曾勇 徐仙贇 傅忠 陈枫 彭威 黄海金 于 2021-03-19 设计创作，主要内容包括：本发明公开了一种盲法输尿管支架管取出装置,包括导管和导丝,所述导管内设置有贯穿所述导管的管腔一和管腔二,所述导丝一头由其管腔一的尾端穿入后由管腔一的首端穿出,然后由管腔二的首端穿入后由管腔二并经管腔二的尾端穿出,所述导管的首端位于两个所述管腔之间的位置设置有一凹槽,本发明中的盲法输尿管支架管取出装置,可以在盲视野的情况下取出输尿管支架管,整个装置结构简单,操作方便,能够稳定的取出输尿管支架管。(The invention discloses a blind ureteral stent tube taking-out device, which comprises a catheter and a guide wire, wherein a first lumen and a second lumen which penetrate through the catheter are arranged in the catheter, the first guide wire penetrates through the tail end of the first lumen and then penetrates out of the head end of the first lumen, then penetrates through the head end of the second lumen and then penetrates out of the second lumen and passes through the tail end of the second lumen, a groove is arranged at a position between the two lumens at the head end of the catheter.)

1. The utility model provides a blind method ureteral stent remove device which characterized in that: the guide wire comprises a catheter and a guide wire, wherein a first lumen and a second lumen which run through the catheter are arranged in the catheter, the first guide wire penetrates out from the head end of the first lumen after penetrating through the tail end of the first lumen, then penetrates out from the tail end of the second lumen after penetrating through the head end of the second lumen, and the second lumen passes through the tail end of the second lumen, and the head end of the catheter is positioned between the two lumens and is provided with a groove.

2. The blind ureteral stent removal device according to claim 1, wherein: and the guide wire is provided with scale marks.

3. The blind ureteral stent removal device according to claim 1, wherein: the first tube cavity and the second tube cavity are symmetrically arranged.

4. The blind ureteral stent removal device according to claim 1, wherein: the center of the groove is positioned on the axis of the guide pipe.

5. The blind ureteral stent removal device according to claim 1, wherein: and a third lumen penetrating through the catheter is also arranged in the catheter and is a channel for injecting physiological saline.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a blind ureteral stent extracting device.

Background

Currently, methods for removal of ureteral stent tubes: under direct vision of the ureteroscope, the ureteral stent tube is removed using foreign body forceps, but there is a risk of damaging the urethra during cystoscope placement. And aiming at the problem that when a child uses a small-sized cystoscope (5F), foreign body forceps cannot be placed in the small-sized cystoscope, so that the ureteral stent cannot be taken out.

Therefore, in particular, the technical personnel in the field need to solve the problem that the ureteral stent can not be taken out by using foreign body forceps when a small-size cystoscope (5F) is put in the ureteral stent, and a blind ureteral stent taking-out device is provided.

Disclosure of Invention

The invention aims to provide a blind ureteral stent taking-out device, which is used for solving the problems in the prior art, can be used for taking out a ureteral stent under the condition of a blind visual field, and is simple in structure, convenient to operate and capable of stably taking out the ureteral stent.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a blind ureteral stent removing device which comprises a catheter and a guide wire, wherein a first lumen and a second lumen which penetrate through the catheter are arranged in the catheter, the head of the guide wire penetrates through the tail end of the first lumen and then penetrates out of the head end of the first lumen, then penetrates through the head end of the second lumen and then penetrates out of the second lumen and the tail end of the second lumen, and a groove is arranged at a position, between the two lumens, of the head end of the catheter.

Preferably, the guide wire is provided with scale marks.

Preferably, the first and second lumens are symmetrically arranged.

Preferably, the recess is centred on the axis of the conduit.

Preferably, a third lumen penetrating through the catheter is further arranged in the catheter, and the third lumen is a channel for injecting the physiological saline.

Compared with the prior art, the invention has the following beneficial technical effects:

the blind ureteral stent tube taking-out device provided by the invention has the advantages that the ureteral stent tube is taken out under the blind vision condition for the first time, the problem that an infant cannot take out the ureteral stent tube by using foreign body forceps is solved, the whole device is simple in structure and convenient to operate, and the ureteral stent tube can be stably taken out.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a blind ureteral stent removal device in the invention;

FIG. 2 is a schematic structural diagram of a loop formed by a guide wire at the head end in the use process of the blind ureteral stent tube extraction device;

FIG. 3 is a schematic structural diagram of a guide wire sleeving a ureteral stent and enabling the guide wire to enter a groove in the process of using the blind ureteral stent taking device;

in the figure: 1-catheter, 2-guide wire, 3-lumen I, 4-lumen II, 5-groove, 6-ureteral stent tube and 7-lumen III.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a blind ureteral stent extracting device, which aims to solve the problems in the prior art.

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

The blind ureteral stent extracting device in the embodiment comprises a catheter 1 and a guide wire 2, as shown in fig. 1, a first lumen 3 and a second lumen 4 penetrating through the catheter 1 are arranged in the catheter 1, and the first lumen 3 and the second lumen 4 are symmetrically arranged; one end of the guide wire 2 penetrates through the tail end of the first lumen 3 and then penetrates out of the head end of the first lumen 3, then penetrates through the head end of the second lumen 4 and then penetrates out of the tail end of the second lumen 4, and the guide wire 2 is provided with scale marks, so that the guide wire can be accurately observed, and the length of the guide wire 2 entering the bladder can be recorded. A groove 5 is formed in the position, between the two tube cavities, of the head end of the catheter 1, the center of the groove 5 is located on the axis of the catheter 1, and the guide wire 2 drives the bent ureteral stent tube 6 to enter the groove 5 when tightened, so that the ureteral stent tube 6 can be conveniently taken out.

The catheter 1 is also internally provided with a third lumen 7 penetrating through the catheter 1, the third lumen 7 is a channel for injecting physiological saline, and the third lumen 7 is positioned between the first lumen 3 and the second lumen 4.

The operation steps of taking out the ureteral stent 6 by applying the blind ureteral stent 6 taking-out device provided by the invention are as follows:

1) taking out the blind ureteral stent 6 taking-out device (shown in figure 1), smearing paraffin oil on the surface, and placing a novel device through urethra.

2) Proper amount of warm physiological saline is injected into the bladder through the lumen III 7 (the amount is determined according to the size of the bladder of the patient).

3) The guide wire 2 is slowly and lightly fed into the bladder, and the entering length of the guide wire 2 is observed and recorded (the entering length of the guide wire 2 into the bladder is determined according to the size of the bladder of a patient), so that the entering guide wire 2 is in a ring shape in a side view, as shown in fig. 2.

4) The whole device is slightly and integrally rotated, so that a lantern ring formed at the head end of the guide wire 2 is sleeved on the ureteral stent 6.

5) The guide wire 2 is tightened, folding the ureteral stent 6 and into the recess 5, as shown in fig. 3.

6) The whole device is slowly and integrally drawn out, and the ureteral stent 6 is taken out.

The principle and the implementation mode of the invention are explained by applying specific examples, and the description of the above examples is only used for helping understanding the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, this summary should not be construed to limit the present invention.