CN213607193U - S-shaped ureteral stent - Google Patents
S-shaped ureteral stent Download PDFInfo
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- CN213607193U CN213607193U CN202021098716.7U CN202021098716U CN213607193U CN 213607193 U CN213607193 U CN 213607193U CN 202021098716 U CN202021098716 U CN 202021098716U CN 213607193 U CN213607193 U CN 213607193U
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Abstract
The utility model discloses a S type ureter support, including drainage section and the curling section of setting at drainage section both ends and drainage section intercommunication, drainage section and curling section are made by flexible elastic material, the drainage section be with the S type of human ureter looks adaptation. The utility model discloses reduce the mucous membrane damage, accord with human ureter physiology structure.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to an S-shaped ureteral stent.
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.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the S-shaped ureteral stent which reduces mucosal injury and conforms to the physiological structure of the human ureter.
In order to achieve the purpose, the invention adopts the following technical scheme:
the drainage section and the curling section are both made of flexible elastic materials, and the drainage section is in an S shape matched with the human ureter.
Preferably, the at least one end of the curled section is encircled to form a plurality of circles of curled sections, and the plurality of circles of curled sections are flexible elastic material pieces and can be unfolded so that part of the circles of the curled sections extend and unfold in the length direction of the drainage section.
Preferably, the curling 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 for multiple circles to form a multi-circle curling section
Preferably, the part of the drainage segment close to the bladder segment is S-shaped.
Preferably, the crimped section is provided with at least 3 turns.
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 ureters with different sizes can be adapted through the unfolding or surrounding of the multi-circle curled section.
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.
The drainage section of the ureteral stent of the utility model is S-shaped, which accords with the physiological structure of the human ureter, after the stent tube is placed, the middle section of the stent can be naturally bent along the human ureter, and the stimulation and the friction of the stent to the ureter wall are reduced, thereby reducing the discomfort of the patient and avoiding the pain of the patient; is made of flexible elastic material, thereby avoiding damage to renal pelvis, bladder and ureter.
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 embodiment of the flow-guiding section.
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 or similar 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 illustrative and intended to be illustrative of the invention and are not to be construed as limiting the 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 and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to 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 fixedly connected, detachably connected, or integrally connected; 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further 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 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.
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.
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.
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 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.
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. Many variations of the invention are possible. Any simple modification, equivalent change and modification of the above embodiments according to the spirit of the present invention should be considered to be within the protection scope of the present invention.
Claims (10)
1. The utility model provides a S type ureter support, its characterized in that, drainage section (1) and set up the crimping section that switches on each other at drainage section (1) both ends and drainage section (1), drainage section (1) and crimping section are made by flexible elastic material, and drainage section (1) is the S type with human ureter looks adaptation.
2. The sigmoureteral stent of claim 1, wherein the at least one end of the crimped section is wrapped around to form a multi-turn crimped section, which is a flexible elastomeric material and which is deployable such that a portion of the turn of the crimped section extends in the length direction of the drainage section (1).
3. An S-ureteral stent according to claim 2, characterized in that the crimped section comprises 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), and both the renal pelvis section (2) and the bladder section (3) are wound around a plurality of turns to form a multi-turn crimped section.
4. A S-ureteral stent according to claim 3, characterized in that the portion of the drainage section (1) close to the bladder section (3) is S-shaped.
5. An S-ureteral stent according to claim 2, wherein said crimped section is provided with at least 3 turns.
6. An S-ureteral stent according to claim 2, characterized in that said crimped section comprises a first turn distal to the drainage section (1) being a retaining loop and a variable turn following the retaining loop for lengthening or shortening the length of the drainage section.
7. A S-ureteral stent according to claim 2, wherein said ureteral stent has a certain size, and can be adapted to ureters of different sizes by unwinding or looping a plurality of turns of a crimped section.
8. A S-ureteral stent according to claim 3, characterized in that said convoluted section is in the same plane as the drainage section (1).
9. A S-ureteral stent according to claim 2, wherein the turns of the crimped section are not in the same plane.
10. An S-ureteral stent according to claim 2, wherein said crimped section is provided with a plurality of drainage holes along its circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021098716.7U CN213607193U (en) | 2020-06-15 | 2020-06-15 | S-shaped ureteral stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021098716.7U CN213607193U (en) | 2020-06-15 | 2020-06-15 | S-shaped ureteral stent |
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| Publication Number | Publication Date |
|---|---|
| CN213607193U true CN213607193U (en) | 2021-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021098716.7U Active CN213607193U (en) | 2020-06-15 | 2020-06-15 | S-shaped ureteral stent |
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| CN (1) | CN213607193U (en) |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220526 Address after: 364000 room 106, building 13, No. 153, Dongxing Road, Dongcheng, Xinluo District, Longyan City, Fujian Province Patentee after: Chen Guoqiang Address before: 311200 No.3, gaoxinjiu Road, Qiaonan block, Xiaoshan Economic and Technological Development Zone, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee before: Zhejiang Medical Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |