CN216294358U - Esophagus support device based on 3D prints - Google Patents
Esophagus support device based on 3D prints Download PDFInfo
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- CN216294358U CN216294358U CN202122777232.6U CN202122777232U CN216294358U CN 216294358 U CN216294358 U CN 216294358U CN 202122777232 U CN202122777232 U CN 202122777232U CN 216294358 U CN216294358 U CN 216294358U
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Abstract
The utility model relates to an esophagus support device based on 3D printing, which comprises: an esophageal stent device based on 3D printing, comprising: the upper section of the stent is woven by flexible metal filaments with memory characteristics, is implanted into an esophagus and is fixed above a tumor; the middle section bracket is respectively connected with the upper section bracket and the lower section bracket and is made of 3D printing materials, and the concave shape of the middle section bracket is basically consistent with the outline of the tumor; and the surfaces of the upper section bracket, the middle section bracket and the lower section bracket are all provided with a film. The beneficial effects are that: this esophagus support adopts 3D printing technique, and condition design customization in according to patient's esophagus, the tumour face is walked in laminating esophagus and the esophagus, and the compliance is strong, is guaranteeing under the unobstructed prerequisite of esophagus, avoids excessively expanding the esophagus, has reduced uncomfortable sense behind the postoperative patient's sternum simultaneously.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to an esophagus support device based on 3D printing.
Background
In recent years, with the continuous progress of medical science, researches show that the esophagus is a part of a digestive tract, is connected with the pharynx, is introduced into the stomach, has the total length of about 25 cm, and mainly pushes food into the stomach through the contraction and the peristalsis of two muscles, namely a ring muscle layer and a longitudinal muscle layer. Esophageal stenosis is a common symptom of digestive system diseases in clinic, and is a local tissue hyperplasia of the esophagus caused by benign esophageal stenosis (such as chemical burn-induced stenosis, congenital esophageal stenosis and the like) and malignant esophageal cancer. Esophageal stenosis can cause esophageal obstruction in patients, leading to dysphagia and even respiratory failure. In 2018, more than 57.2 cases of patients with global esophageal cancer have a mortality rate of 89%, and the five-year survival rate is only 10% -15%. At present, esophageal stent implantation is a main means for treating esophageal obstruction in a non-surgical manner. The main purpose is to provide enough physical support for the narrow part caused by pathological changes and keep the cavity unobstructed so as to smoothly enter water and eat food.
In the process of implanting the metal stent, there are the following problems: first, foreign body sensation behind the sternum: after the esophageal stent is implanted, part of patients feel chest distending pain or foreign body sensation due to the passive expansion of the tumor; ② large hemorrhage of esophagus: when the tumor affects large blood vessels, the esophagus stent can cause the tumor to rupture after being implanted, so that the large bleeding is caused, and the life is threatened; ③ intrapulmonary infections: the esophagus support can press the adjacent trachea, can cause part of patients to have obvious symptoms of irritable cough, influence cough and sputum excretion, and is easy to cause intrapulmonary infection. Fourthly, the esophagus is blocked again: after the stent is implanted, the stent is easy to push and shift when solid food is swallowed because the narrow part is shorter and the wall attaching acting force is small; incomplete expansion of the stricture, stent displacement, too short stent, too long stent indwelling in the stomach or tumor growth in the stent can cause the esophagus to be further narrowed and blocked. Gastro-esophageal reflux: the stent is easily applied to patients with lower esophageal segment and cardia to place the stent, and the stent reduces the sphincter pressure of the lower esophageal segment after being implanted to trigger gastroesophageal reflux; sixthly, perforation and rupture of esophagus: the esophagus is damaged and broken due to overlarge tube diameter of the bracket; seventhly, arrhythmia: the vagus nerve is stimulated by placing the bracket; eighthly, empyema: esophageal mediastinal pleura rupture; and the like.
Therefore, the utility model provides the 3D printing-based esophagus stent device, which reduces the compression on the tumor and keeps the lumen smooth to smoothly feed water and food based on the appearance of the tumor.
SUMMERY OF THE UTILITY MODEL
The utility model provides an esophagus support device based on 3D printing, and aims to solve the problem that adverse reactions are caused by possible displacement or tumor compression of a support in the prior art.
The technical problem solved by the utility model is realized by adopting the following technical scheme:
an esophageal stent device based on 3D printing, comprising:
the upper section of the stent is woven by adopting flexible metal filaments with memory characteristics, is implanted into the esophagus and is fixed above the tumor;
the lower section stent is woven by adopting flexible metal filaments with memory characteristics, is implanted into the esophagus and is fixed below the tumor;
the middle section bracket is respectively connected with the upper section bracket and the lower section bracket and is made of 3D printing materials, and the concave shape of the middle section bracket is the same as or similar to the outer contour of the tumor;
and the surfaces of the upper section bracket, the middle section bracket and the lower section bracket are all provided with a film.
In some preferred embodiments, the material of the metal filament is a nickel titanium alloy material.
In some preferred embodiments, the metal filaments have a diameter of 0.5mm to 0.8 mm.
In some preferred embodiments, the upper and lower stents have a diameter of 16mm to 24 mm; the diameter of the middle section support is 12mm-16 mm.
In some preferred embodiments, the upper diameter of the upper section stent is 20mm to 24 mm; the diameter of the lower part of the upper section bracket is 16 mm; the diameter of the upper part of the lower section bracket is 16 mm; the diameter of the lower part of the lower section bracket is 20mm-24 mm;
the upper part of the upper section support, the lower part of the upper section support, the middle section support, the upper part of the lower section support and the lower part of the lower section support are in smooth transition connection in sequence.
In some preferred embodiments, the minimum expanded diameter of the mid-section stent is not less than 12 mm.
In some preferred embodiments, the mid-section stent is made of a PC-ISO material, has a Rockwell hardness of 109.5 and meets ISO 10993 and United states Pharmacopeia plastic class VI standards. The PC-ISO material is a thermoplastic material passing medical health certification, is widely applied to the industries of medicines and medical instruments, has very high strength, and can be used in the professional fields of operation simulation, skull restoration, dentistry and the like. Has all the performances of PC and can be used in the food and medicine packaging industry. The PC-ISO material has strong mechanical property, good tensile strength and bending strength, and high temperature resistance up to 150 ℃.
In some preferred embodiments, the film material is mainly polytetrafluoroethylene, and mainly has the effects of corrosion resistance, high lubrication and non-stick property and the like, so that food can pass through the film material.
The utility model has the beneficial effects that: 1. this esophagus support middle section adopts 3D printing technique, and condition design customization in according to patient's esophagus, the tumour face is walked in laminating esophagus and the esophagus, and the compliance is strong, under the unobstructed prerequisite of assurance esophagus, minimum expansion diameter is 12mm, avoids excessively expanding the esophagus, has reduced uncomfortable sense behind the postoperative patient's sternum simultaneously.
2. The upper end and the lower end of the bracket are of soft nickel-titanium alloy structures, so that the bracket can be better fixed in an esophageal cavity, the bracket is not easy to displace, and the food retention and the formation of granuloma are reduced;
3. this support is the tectorial membrane support, and the support middle section is 3D printing material partially hard, and the esophagus narrowest department is arranged in to the support middle section, avoids tumour growth to cause the esophagus to block again that the support is narrow.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art 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 other drawings can be obtained by those skilled in the art without inventive exercise.
FIG. 1 is a drawing of the present invention: a schematic structural diagram of an esophageal stent device based on 3D printing in example 1;
FIG. 2 is a drawing of the present invention: a schematic cross-sectional structure diagram of a middle stent of an esophageal stent device based on 3D printing in embodiment 1;
FIG. 3 is a drawing of the present invention: embodiment 2 is a schematic structural diagram of an esophageal stent device based on 3D printing.
Wherein:
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further explained below by combining the specific drawings.
Example 1
Referring to fig. 1-3, a 3D printing-based esophageal stent device includes: the upper section stent 10, the middle section stent 20 and the lower section stent 30, wherein the upper section stent 10 is woven by flexible metal filaments with memory characteristics, is implanted into the esophagus and is fixed above the tumor; the lower section stent 30 is woven by flexible metal filaments with memory property, is used for being implanted into the esophagus and is fixed below the tumor; the middle section support 20 is respectively connected with the upper section support 10 and the lower section support 30 and is made of 3D printing materials, and the concave shape of the middle section support 20 is the same as, similar to or basically consistent with the outer contour of the tumor.
The middle section support 20 in the utility model is designed and customized according to the condition in the esophagus of a patient by adopting a 3D printing technology, and finally, the concave shape of the middle section support 20 is the same as the outline of a tumor through data acquisition and model conversion in advance, and the middle section support is attached to the esophagus and the tumor surface in the esophagus to run after being implanted, so that the compliance is strong, the esophagus is prevented from being excessively expanded on the premise of ensuring the smoothness of the esophagus, and the discomfort of the patient after the operation after the sternum is reduced.
The surfaces of the upper section bracket 10, the middle section bracket 20 and the lower section bracket 30 are all provided with a film, wherein the film is mainly made of polytetrafluoroethylene, and the film has the main functions of corrosion resistance, high lubrication, non-stickiness and the like, and is beneficial to the passing of food.
The metal filament is made of nickel-titanium alloy material, and the diameter of the metal filament is 0.5mm-0.8 mm. The nickel-titanium alloy material has good memory property and flexibility.
The diameters of the upper section bracket 10 and the lower section bracket 30 are 16mm-24 mm; the diameter D3 of the middle section support 20 is 12mm-16mm, and 3D simulation printing is carried out according to the focus form of CT thin layer scanning, the narrowest region of the esophagus, the maximum tolerance expansion degree and the simulated expansion effect. The diameter D1 of the upper part of the upper section bracket 10 is 20mm-24 mm; the diameter D2 of the lower part of the upper section bracket 10 is 16 mm; the upper diameter D4 of the lower section support 30 is 16 mm; the diameter D5 of the lower part of the lower section bracket 30 is 20mm-24 mm; the upper part of the upper section support 10, the lower part of the upper section support 10, the middle section support 20, the upper part of the lower section support 30 and the lower part of the lower section support 30 are in smooth transition connection in sequence. Because the diameters of the upper section bracket 10 and the lower section bracket 30 are slightly larger than the diameter of the esophagus, the upper section bracket and the lower section bracket can be effectively fixed in the esophagus, the bracket is not easy to displace, and the food retention and the granuloma formation are reduced.
Referring to fig. 3, in order to ensure the food to be kept in the esophagus, the minimum expanded diameter Dmin of the mid-section stent 20 is not less than 12 mm. The middle section support is made of PC-ISO material, the Rockwell hardness is 109.5, and the standard accords with ISO 10993 and American pharmacopoeia plastic VI standard. The PC-ISO material is a thermoplastic material passing medical health certification, is widely applied to the industries of medicines and medical instruments, has very high strength, and can be used in the professional fields of operation simulation, skull restoration, dentistry and the like. Has all the performances of PC and can be used in the food and medicine packaging industry. The PC-ISO material has strong mechanical property, good tensile strength and bending strength, and high temperature resistance up to 150 ℃.
In the specific use process, the middle section support 20 is designed and customized according to the condition in the esophagus of a patient, the middle section support 20 is obtained through a 3D printing technology through the previous data acquisition and model conversion, finally, the concave shape of the middle section support 20 is the same as the outline of a tumor, the diameter of the middle section support 20 is generally 12mm-16mm, and the diameter of the middle section support is close to that of the esophagus. In order to ensure the food to be kept in the esophagus, the minimum expanded diameter of the mid-section stent 20 should be no less than 12 mm. Because the middle section support 20 adopts the 3D printing material of partly hard, when arranging in the narrowest department of esophagus, can avoid tumour growth to cause the support narrow, cause the esophagus to obstruct again.
The diameter of the upper section bracket 10 and the lower section bracket 30 is 16mm-24mm, the diameter is slightly larger than that of the esophagus, the upper section bracket 10 and the lower section bracket can be effectively fixed in the esophagus, the bracket displacement is not easy to cause, and the food retention and the granuloma formation are reduced.
When the stent is placed, the stent is contracted in a sheath, the sheath is conveyed into the esophagus under the guidance of a guide wire, the intrathecal stent is gradually pushed out of the sheath by using a pusher and released, and the stent can be fixed in the esophageal cavity by fixing devices at two ends of the stent after the stent is released. The technique of delivering and releasing the stent into the esophagus is similar to the prior common technique of delivering and releasing the stent into the esophagus, and the operation is simple.
Example 2
Referring to fig. 3, in a 3D printing-based esophageal stent device, unlike embodiment 1, the upper diameter D1 of the upper stent 10 is 20mm to 24 mm; the diameter D2 of the lower part of the upper section bracket 10 is 16 mm; the upper diameter D4 of the lower section support 30 is 16 mm; the diameter D5 of the lower part of the lower section bracket 30 is 20mm-24 mm; the upper part of the upper section support 10, the lower part of the upper section support 10, the middle section support 20, the upper part of the lower section support 30 and the lower part of the lower section support 30 are in reducing transition connection in sequence.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides an esophagus support device based on 3D prints, its characterized in that includes:
the upper section of the stent is woven by adopting flexible metal filaments with memory characteristics, is implanted into the esophagus and is fixed above the tumor;
the lower section stent is woven by adopting flexible metal filaments with memory characteristics, is implanted into the esophagus and is fixed below the tumor;
the middle section bracket is respectively connected with the upper section bracket and the lower section bracket and is made of 3D printing materials, and the concave shape of the middle section bracket is the same as or similar to the outer contour of the tumor;
and the surfaces of the upper section bracket, the middle section bracket and the lower section bracket are all provided with a film.
2. The 3D printing-based esophageal stent device according to claim 1, wherein the metal filament is made of a nickel-titanium alloy.
3. The 3D printing-based esophageal stent device according to claim 2, wherein the diameter of the metal filament is 0.5mm to 0.8 mm.
4. The 3D printing-based esophageal stent device according to claim 1, wherein the upper stent and the lower stent have a diameter of 16mm to 24 mm; the diameter of the middle section support is 12mm-16 mm.
5. The 3D printing-based esophageal stent device according to claim 4, wherein the upper diameter of the upper stent is 20mm-24 mm; the diameter of the lower part of the upper section bracket is 16 mm; the diameter of the upper part of the lower section bracket is 16 mm; the diameter of the lower part of the lower section bracket is 20mm-24 mm;
the upper part of the upper section support, the lower part of the upper section support, the middle section support, the upper part of the lower section support and the lower part of the lower section support are in smooth transition connection in sequence.
6. The 3D printing-based esophageal stent device according to claim 4, wherein the upper diameter of the upper stent is 20mm-24 mm; the diameter of the lower part of the upper section bracket is 16 mm; the diameter of the upper part of the lower section bracket is 16 mm; the diameter of the lower part of the lower section bracket is 20mm-24 mm;
the upper part of the upper section support, the lower part of the upper section support, the middle section support, the upper part of the lower section support and the lower part of the lower section support are in reducing transition connection in sequence.
7. The 3D printing-based esophageal stent device of claim 4, wherein the minimum expanded diameter of the mid-section stent is not less than 12 mm.
8. The 3D printing-based esophageal stent device according to claim 1, wherein the mid-section stent is made of PC-ISO material, has rockwell hardness of 109.5, and meets ISO 10993 and usp plastic class VI standards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122777232.6U CN216294358U (en) | 2021-11-15 | 2021-11-15 | Esophagus support device based on 3D prints |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122777232.6U CN216294358U (en) | 2021-11-15 | 2021-11-15 | Esophagus support device based on 3D prints |
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| Publication Number | Publication Date |
|---|---|
| CN216294358U true CN216294358U (en) | 2022-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122777232.6U Active CN216294358U (en) | 2021-11-15 | 2021-11-15 | Esophagus support device based on 3D prints |
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| CN (1) | CN216294358U (en) |
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Effective date of registration: 20230403 Address after: 518000 No.29 Bulan Road, Nanwan street, Longgang District, Shenzhen City, Guangdong Province Patentee after: THE THIRD PEOPLE'S HOSPITAL OF SHENZHEN Address before: 050000 Room 302, unit 1, Building 29, No. 49, zhaotuo Road, Xinhua District, Shijiazhuang City, Hebei Province Patentee before: Wang Mingbo Patentee before: Li Zhiwei |
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