Ureteral stent with indocyanine green coating
By coating the outside of the ureteral stent with indocyanine green and combining it with a spiral support segment structure, the problem of difficult intraoperative positioning of traditional ureteral stents has been solved, achieving visualization and stable support of the ureter, and improving surgical precision and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2026-03-27
AI Technical Summary
Traditional ureteral stents are difficult to locate and visualize accurately during surgery, especially in complex procedures, and lack biocompatible marking schemes.
An indocyanine green coating is applied to the outside of the ureteral stent to enable visualization using its fluorescence properties at a specific laser wavelength. This is combined with a spiral support segment structure to assist in supporting the ureter, and a built-in shape memory metal is incorporated to improve stability.
It improves intraoperative visualization of the ureter, enhances surgical precision, reduces complications, and strengthens the patency and stability of the ureteral stent through the design of the spiral support segment.
Smart Images
Figure CN224039411U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to ureteral stent technical field, specifically is ureteral stent with indocyanine green coating. BACKGROUND
[0002] The ureteral stent is a kind of medical instrument for urinary tract obstruction or postoperative care, and the traditional ureteral stent can not be accurately positioned or visualized in operation, especially in complex surgery, in order to improve the visualization effect of ureter, additional imaging technology or special marking of the stent is usually needed, however, there is lack of a solution that can provide stent marking and consider biocompatibility in the prior art, based on this, a ureteral stent with indocyanine green coating is provided. SUMMARY
[0003] The utility model aims at: for the purpose of being able to develop ureter in operation, improve the visualization effect, and then improve the operation precision and safety, provide ureteral stent with indocyanine green coating.
[0004] To achieve the above object, the utility model provides the following technical scheme: ureteral stent with indocyanine green coating, including by ureteral stent, the ureteral stent is composed of pipe frame straight line section, curl section, spiral support section, the curl section is fixedly connected to pipe frame straight line section both ends in pairs, the spiral support section is formed in the middle position of pipe frame straight line section, and the spiral support section of helical structure is used for assisting the support for human ureter;
[0005] The outer side of pipe frame straight line section, curl section and spiral support section is coated with indocyanine green coating, and the indocyanine green coating is used to emit light under specific laser wavelength, to realize the visualization effect of ureteral stent.
[0006] As a further scheme of the utility model: the indocyanine green coating can also be replaced by first segmented coating and second segmented coating, and the first segmented coating and the second segmented coating are alternately distributed along the overall trajectory of the ureteral stent.
[0007] As a further scheme of the utility model: the outer side of the indocyanine green coating is coated with a hydrophilic polymer coating.
[0008] As a further scheme of the utility model: the ureteral stent is made of biocompatible material, and a memory metal is built-in in the interior of the ureteral stent at the positions of the curl section and the spiral support section.
[0009] As a further scheme of the utility model: the indocyanine green coating is fixed on the surface of the stent by using a biocompatible adhesive.
[0010] Compared with the prior art, the utility model has the beneficial effects that:
[0011] By setting the indocyanine green coating, the fluorescence characteristics of indocyanine green are utilized, the ureter can be developed in the operation, and therefore the visualization effect of the ureter is improved, the operation precision is improved, the complications are reduced, and the treatment effect of the patient is improved, and in addition, the smoothness and stability of the ureteral stent in use can be further improved through the structural setting of the spiral support section. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is a structural schematic view of the utility model;
[0013] Figure 2 It is another perspective structural schematic view of the ureteral stent of the utility model.
[0014] In the figure: 1, ureteral stent; 101, stent straight section; 102, coiled section; 103, spiral support section; 2, indocyanine green coating; 201, first subsection coating; 202, second subsection coating. DETAILED DESCRIPTION
[0015] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0016] Please refer to Figures 1-2 In the embodiments of the utility model, the ureteral stent with the indocyanine green coating comprises a ureteral stent 1, the ureteral stent 1 is composed of a stent straight section 101, a coiled section 102 and a spiral support section 103, the coiled section 102 is symmetrically fixed at both ends of the stent straight section 101, and the spiral support section 103 is formed at the middle position of the stent straight section 101, and the spiral support section 103 in the spiral structure is used for assisting the support of the human ureter.
[0017] The outer side of the stent straight section 101, the coiled section 102 and the spiral support section 103 is coated with an indocyanine green coating 2, the indocyanine green coating 2 is used for emitting light under a specific laser wavelength, so as to realize the visualization effect of the ureteral stent 1.
[0018] The ureteral stent 1 is made of a biocompatible material, and a memory metal is built-in in the inside of the coiled section 102 and the spiral support section 103 of the ureteral stent 1.
[0019] In the embodiment, after the ureteral stent 1 is implanted into the human body, the spiral support section 103 is distributed inside the ureter of the human body, and the two coiled sections 102 are located inside the bladder and the kidney respectively. At this time, the coiled section 102 and the spiral support section 103 respectively recover to the coiled shape and the spiral shape under the action of the characteristics of the memory metal:
[0020] The coiled section 102 in the coiled shape realizes the limiting of the ureteral stent 1.
[0021] The spiral support section 103 in the spiral shape is in a three-dimensional shape. Compared with the linear structure of the conventional ureteral stent 1 located inside the ureter of the human body, the spiral three-dimensional spiral support section 103 can provide auxiliary support for the ureter of the human body, so as to avoid that the ureter of the human body is too narrow. Meanwhile, the spiral spiral support section 103 has a certain deformation and expansion force, so that the overall tube stent linear section 101 and the spiral support section 103 can be kept in a good unobstructed state.
[0022] In addition, the indocyanine green coating 2 can emit light under a specific laser wavelength, so as to be visualized by using a corresponding fluorescence imaging system in the operation. Then, the ureteral stent 1 can emit light under the irradiation of the laser of the specific wavelength, so as to assist the doctor in accurately positioning the ureter in the operation.
[0023] Please refer to Figure 1 The indocyanine green coating 2 can also be replaced by the first segmented coating 201 and the second segmented coating 202, which are alternately distributed along the overall track of the ureteral stent 1.
[0024] In the embodiment, the first segmented coating 201 is coated with indocyanine green, and the second segmented coating 202 is coated with other fluorescent markers (for example, fluorescein isothiocyanate FITC). Different light-emitting colors of the two kinds of fluorescent markers can provide stronger developing effect.
[0025] Please refer to Figure 1 The outside of the indocyanine green coating 2 is coated with a hydrophilic polymer coating, and the indocyanine green coating 2 is fixed on the surface of the stent by using a biocompatible adhesive.
[0026] In the embodiment, the hydrophilic polymer coating has good lubricating performance, which is used to reduce the friction between the ureteral stent 1 and the human body.
[0027] The indocyanine green coating 2 is bonded by using the biocompatible adhesive, so as to ensure the safety and stability of the indocyanine green coating 2 in the body.
[0028] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.
Claims
1. Ureteral stent with indocyanine green coating, comprising a ureteral stent (1), characterized in that, The ureteral stent (1) is composed of a stent straight section (101), a coiled section (102) and a helical support section (103), the coiled section (102) is symmetrically fixed at both ends of the stent straight section (101), and the helical support section (103) is formed at the middle position of the stent straight section (101), and the helical support section (103) with a spiral structure is used for auxiliary support for the human ureter; The outer side of the stent straight section (101), the coiled section (102) and the helical support section (103) is coated with an indocyanine green coating (2), the indocyanine green coating (2) is used for emitting light at a specific laser wavelength to realize the visualization effect of the ureteral stent (1).
2. The ureteral stent with an indocyanine green coating according to claim 1, characterized in that, The indocyanine green coating (2) can also be replaced by a first segmented coating (201) and a second segmented coating (202), which are alternately distributed along the overall trajectory of the ureteral stent (1).
3. The ureteral stent with an indocyanine green coating according to claim 1, wherein, The outer side of the indocyanine green coating (2) is coated with a hydrophilic polymer coating.
4. The ureteral stent with an indocyanine green coating according to claim 1, wherein, The ureteral stent (1) is made of a biocompatible material, and a memory metal is built-in in the interior of the coiled section (102) and the helical support section (103) of the ureteral stent (1).
5. The ureteral stent with an indocyanine green coating according to claim 1, wherein, The indocyanine green coating (2) is fixed on the surface of the stent by using a biocompatible adhesive.