CN213607213U

CN213607213U - Ureter bracket

Info

Publication number: CN213607213U
Application number: CN202021100051.9U
Authority: CN
Inventors: 陈国强; 郑兴荣; 李雪影; 李芳柄; 郑鹏; 项腾; 张子扬; 吴秋菊
Original assignee: Zhejiang Medical Technology Co ltd
Current assignee: Chen Guoqiang
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-07-06
Anticipated expiration: 2030-06-15

Abstract

The utility model relates to a ureteral stent, this ureteral stent include drainage section and set up the section of curling that switches on each other at drainage section both ends and drainage section, and wherein the section of curling of one end encircles the section of curling of formation multiturn at least, the section of curling of multiturn is the flexible elastic material spare and its partial loop that can take place to launch so that the section of curling extends to launch in the length direction of drainage section. The utility model discloses firm and increase patient comfort's ureteral stent.

Description

Ureter bracket

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to ureter support.

Background

Ureteral stents, also known as double "J" tubes, are elongated tubes that are placed from the kidney to the bladder. The ureteral stent is a medical instrument commonly used in urinary surgery, and when stones, tumors and the like cause obstruction, the ureteral stent can play a role in supporting and expanding a ureter and draining kidney urine, and in addition, most of the ureteral stent or the renal pelvis operation needs to be conventionally placed.

The elastic rings at two ends of the traditional ureteral stent are mostly in a circle, the middle straight section is reserved for a long time, so that the ureteral stent is installed, the bladder sections are increased, the trigonal area of the bladder is easily stimulated to cause frequent urination of patients, and meanwhile, because the two ends are not fixed, the double J-shaped tubes move up and down along with the movement of the human body, the mucous membrane is damaged, and hematuria is easily caused to the patients; and the middle section of the ureter bracket is straight, so that the ureter bracket is not in line with the physiological structure of the human ureter, the human ureter can become straight and stiff, the discharge of urine in the kidney is influenced, and mild hydrops can appear in patients.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model discloses implement and provide a firm ureteral stent who increases patient's comfort.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a ureteral stent, this ureteral stent includes drainage segment and sets up the curling section that switches on each other at drainage segment both ends and drainage segment, and the curling section of at least one of them one end encircles and forms the section of circling more, the section of circling more is flexible elastic material spare and it can take place to expand so that the partial circle of the section of curling extends to expand in the length direction of drainage segment.

Preferably, the multi-turn crimped section has at least 3 turns.

Preferably, the curled section comprises a renal pelvis section arranged at the proximal end of the drainage section and a bladder section arranged at the distal end of the drainage section, and the renal pelvis section and the bladder section are both surrounded by multiple circles to form the multi-circle curled section.

Preferably, the crimping section comprises a first ring which is a retaining ring and is far away from the drainage section, and a variable ring which is connected with the retaining ring and is used for lengthening or shortening the length of the drainage section.

Preferably, the ureteral stent has a certain specification, and the ureteral stent can be adapted to ureters with different sizes through the unfolding or surrounding of a plurality of circles of curled sections.

Preferably, the segment of the renal pelvis is curled into a plurality of loops.

Preferably, the plane of the multi-circle curled section and the drainage section are on the same plane.

Preferably, the turns of the curled segment are not in the same plane.

Preferably, the curling section is provided with a plurality of drainage holes along the surrounding direction.

Preferably, the curled segment is made of a high molecular copolymer.

Compared with the prior art, the drainage section of the utility model has shortened initial length, and the flexible elastic multi-circle curling section formed by at least one end curling section in the curling section can be unfolded so as to extend and unfold a part of circles in the length direction of the drainage section, and the length of the drainage section can be shortened and lengthened by winding and unfolding the multi-circle curling section so as to adapt to different human body ureteral structures; the number of turns of the crimping section is increased, and the length of the middle drainage section is shortened, so that the stent is tightly fixed on the renal pelvis and the bladder and is not easy to shift, the stent is prevented from being left in the bladder too much, bladder irritation symptoms are reduced, mucous membrane damage is reduced, hematuria is reduced, and the comfort level of a patient is improved; and the curled sections are all made of flexible elastic materials, so that damage to the renal pelvis, the bladder and the ureter can be reduced.

Drawings

Fig. 1 is a schematic view of the utility model after being placed in a ureter;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a schematic structural view of a drainage segment of the stent placed in a human body by the pusher and the guide wire according to the second embodiment;

FIG. 4 is a schematic structural view of a second flow guiding section according to the embodiment.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," "retained," and the like are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements can be directly connected or indirectly connected through an intermediate medium, and the two elements can be communicated with each other at the inner sections. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example one

A ureteral stent shown in fig. 1 to 3, which includes a drainage section 1 and a curled section disposed at two ends of the drainage section 1 and communicated with the drainage section 1, wherein at least one curled section at one end is encircled to form a plurality of curled sections, and the plurality of curled sections are flexible elastic material pieces and can be unfolded so that part of the curled sections extend and unfold in the length direction of the drainage section 1; compared with the prior art, the drainage section has shortened initial length, and the flexible elastic multi-circle curling section formed by the curling section at least at one end in the curling section can be unfolded so as to extend and unfold part of circles in the length direction of the drainage section 1; the number of turns of the crimping section is increased, and the length of the middle drainage section 1 is shortened, so that the stent is tightly fixed on the renal pelvis and the bladder and is not easy to shift, the stent is prevented from being excessively left on the bladder, bladder irritation symptoms are reduced, mucous membrane damage is reduced, hematuria is reduced, and the comfort level of a patient is improved; and the curled sections are made of flexible elastic materials, so that damage to the renal pelvis 5, the bladder 5 and the ureter can be reduced.

Furthermore, the multi-circle curled section at least has 3 circles, and the length of the drainage section 1 can be expanded and lengthened while a good fixing effect is achieved, so that the multi-circle curled section is suitable for different human body ureter structures.

Further, as shown in fig. 1 to 2, the crimping section includes a renal pelvis section 2 disposed at the proximal end of the drainage section 1 and a bladder section 3 disposed at the distal end of the drainage section 1, the renal pelvis section 2 and the bladder section 3 both encircle for multiple circles to form a multi-circle crimping section, so as to enhance the fixing strength of the renal pelvis section 2 and the bladder section 3, and when the drainage section 1 is reserved too short, the bladder section 3 crimping ring can be unfolded to elongate the length of the drainage section 1.

Furthermore, the curling section comprises a first circle which is far away from the drainage section 1 and is a retaining ring and a variable ring which is connected with the retaining ring and is used for lengthening or shortening the length of the drainage section 1, the curling section is always provided with a circle which is kept in a curling shape and plays a role of fixing the bracket 6, and the variable ring which is connected with the curling section can increase the fixing strength of the bracket curling section, prevent the bracket 6 from moving up and down along with the movement of a human body and stimulate mucous membranes; but also can be unfolded to elongate the length of the drainage section 1, so as to adapt to different structures of the human ureter.

Furthermore, the ureteral stent has a determined specification, can be adapted to ureters with different sizes by unfolding or surrounding the multi-circle curled section, prevents the stent from being excessively left in the bladder, reduces the stimulation symptom of the bladder and the injury of mucous membrane, reduces the occurrence of hematuria, improves the comfort of patients

Further, as shown in fig. 1 and 2, the pelvis section 2 is curled into a plurality of loops to increase the fixing strength.

Further, as shown in fig. 1 and 2, the plane of the multi-turn curled section and the drainage section 1 are on the same plane, so that the curled section can be conveniently unfolded, and the injury to the mucosa is reduced.

Further, the multiple circles of the curled section are not on the same plane, and when the multiple circles are not on the same plane, the contact area of the curled section with the renal pelvis 5 and the bladder 4 is increased, so that the fixing strength is increased.

Further, as shown in fig. 1 and 2, the curled segment is provided with a plurality of drainage holes along the surrounding direction.

Further, as shown in fig. 1 and fig. 2, the curled segment is made of a high molecular copolymer.

Example two

As shown in fig. 1 to 4, an S-shaped ureteral stent comprises a drainage section 1 and a curled section arranged at two ends of the drainage section 1 and communicated with the drainage section 1, wherein the drainage section 1 and the curled section are both made of flexible elastic materials, the drainage section 1 is in an S shape matched with a human ureter, the middle section of the ureteral stent 6 is in a curved arc shape and conforms to the physiological structure of the human ureter, and after the stent 6 is placed, the middle section of the stent 6 can be naturally curved along the human ureter, so that the stimulation and friction of the stent on the ureter wall are reduced, the discomfort of a patient is reduced, and the pain of the patient is avoided; is made of flexible elastic material, thereby avoiding damage to the renal pelvis 5, the bladder 4 and the ureter.

As shown in fig. 1 to 3, the at least one end of the curled segment is encircled to form a plurality of circles of curled segments, the plurality of circles of curled segments are flexible elastic material pieces and can be unfolded so that part of the circles of the curled segments extend and unfold in the length direction of the drainage segment 1; compared with the prior art, the drainage section 1 has shortened initial length, and the flexible elastic multi-circle curling section formed by the curling section at least at one end in the curling section can be unfolded so as to extend and unfold a part of circles in the length direction of the drainage section 1; the number of turns of the crimping section is increased, and the length of the middle drainage section 1 is shortened, so that the stent is tightly fixed on the renal pelvis and the bladder and is not easy to shift, the stent is prevented from being excessively left on the bladder, bladder irritation symptoms are reduced, mucous membrane damage is reduced, hematuria is reduced, and the comfort level of a patient is improved; and the curled sections are made of flexible elastic materials, so that damage to the renal pelvis 5, the bladder 5 and the ureter can be reduced.

Further, as shown in fig. 1, 2 and 4, the drainage segment 1 has an S-shape near the bladder segment 3, which conforms to the physiological structure of the ureter of the human body, so as to improve the comfort of the patient and maintain the normal physiological structure of the ureter.

The implantation method of the stent comprises the following steps:

as shown in fig. 3, a guidewire 9 is passed through the ureter and into the renal pelvis; the pusher is provided with a body rod section 8 and an elastic section 7, the elasticity and the outer diameter of the pusher are 7 and are smaller than the inner cavity of the bracket 6, the elastic section 7 of the pusher is plugged into the inner cavity of the bracket 6, the inner diameter of the elastic section 7 of the pusher is smaller than the outer diameter of the guide wire 9, the guide wire 9 penetrates through the inner cavity of the pusher and the inner cavity of the bracket 6, and the diameter of the elastic section 7 is enlarged, so that the directions of the bracket 6 and the elastic section 7 of the pusher in the ureter accord with the physiological characteristics of the human ureter, after the adjustment is completed, the guide wire 9 is taken out, the elastic section 7 of the pusher.

It should be noted that the above embodiments are merely representative examples of the present invention. The utility model can also have a plurality of deformations. Any simple modification, equivalent changes and modifications made to the above embodiments according to the essence of the present invention should be considered as belonging to the protection scope of the present invention.

Claims

1. The ureteral stent is characterized by comprising a drainage section (1) and a curling section, wherein the curling section is arranged at two ends of the drainage section (1) and communicated with the drainage section (1), at least one end of the curling section surrounds to form a multi-circle curling section, and the multi-circle curling section is a flexible elastic material piece and can be unfolded so that part of the curling section is partially coiled in the length direction of the drainage section (1) and is unfolded.

2. The ureteral stent of claim 1, wherein the multi-turn crimped section has at least 3 turns.

3. The ureteral stent according to claim 1, wherein the curled section comprises a renal pelvis section (2) arranged at the proximal end of the drainage section (1) and a bladder section (3) arranged at the distal end of the drainage section (1), and the renal pelvis section (2) and the bladder section (3) are both wound for a plurality of circles to form a multi-circle curled section.

4. The ureteral stent according to claim 1, wherein said crimped section comprises a first turn distal from the drainage section (1) being a retaining turn and a variable turn following the retaining turn for lengthening or shortening the length of the drainage section.

5. The ureteral stent according to claim 3, wherein said ureteral stent has a certain gauge, and can be adapted to different sizes of ureters by the deployment or looping of a plurality of convolutions.

6. The ureteral stent according to claim 3, wherein the pyeloid section (2) is crimped into a plurality of loops.

7. The ureteral stent according to claim 1, wherein the plane of the convoluted section is coplanar with the drainage section (1).

8. The ureteral stent of claim 1, wherein the plurality of turns of the crimped section are not in the same plane.

9. The ureteral stent according to claim 1, wherein the curled section is provided with a plurality of drainage holes along a circumferential direction thereof.

10. The ureteral stent of claim 1, wherein the crimped section is made of a high molecular copolymer.