KR-20260065894-A - Stent with dynamic movement-prevention properties

Abstract

A medical stent comprises an elongated tubular body extending from a proximal end region to a distal end region. The distal end region of the elongated tubular body may be configured to resist movement resulting from a perforating force. The distal end region of the elongated tubular body may comprise two or more longitudinally extending voids and two or more longitudinally extending dynamic coupling features formed between adjacent longitudinally extending voids. The two or more longitudinally extending dynamic coupling features are configured to spread radially outward in response to an applied perforating force to dissipate the applied perforating force.

Inventors

• 폴란 마틴 지

Assignees

• 보스톤 싸이엔티픽 싸이메드 인코포레이티드

Dates

Publication Date

20260511

Application Date

20240906

Priority Date

20230907

Claims (15)

1. It is a medical stent, It includes an elongated tubular body extending from the proximal end region to the distal end region; The distal end region of the slender tubular body is configured to resist movement as a result of the interlocking force, and The distal end region is: Two or more longitudinally extended voids; and It has two or more longitudinal-extended dynamic coupling features formed between adjacent longitudinal-extended gaps; A medical stent configured such that two or more longitudinally extending dynamic coupling features spread radially outward in response to an applied perforating force to dissipate the applied perforating force.
2. A medical stent according to claim 1, wherein the distal end region extends to the distal end of an elongated tubular body, and two or more longitudinally extending cavities extend distally to the distal end.
3. A medical stent according to claim 1 or 2, wherein the medical stent has a total length and the length of each of two or more longitudinal-extending vacancies is 25 percent or less of the total length.
4. A medical stent according to any one of claims 1 to 3, wherein when the slender tubular body is in a relaxed state, the slender tubular body has a constant diameter from the proximal end region to the distal end region.
5. A medical stent according to any one of claims 1 to 3, wherein the distal end region of the elongated tubular body has an increased diameter compared to the diameter of the elongated tubular body proximal to the distal end region.
6. A medical stent according to any one of claims 1 to 3, wherein the proximal end region of the elongated tubular body has an increased diameter compared to the diameter of the elongated tubular body distal to the proximal end region.
7. A medical stent according to any one of claims 1 to 3, further comprising a spherical region disposed between a distal end region and a proximal end region.
8. A medical stent according to any one of claims 1 to 7, further comprising a polymer coating extending over at least a portion of an elongated tubular body.
9. In paragraph 8, the polymer coating is a medical stent extending from the proximal end region to the distal end region.
10. In claim 8, a medical stent having two or more longitudinal-extending cavities without a polymer coating.
11. A medical stent according to any one of claims 1 to 10, wherein two or more longitudinal-extending dynamic coupling features are configured to be non-traumatic.
12. It is a medical stent, An elongated tubular body extending from the proximal end region to the distal end region; It includes a polymer coating extending over at least a portion of an elongated tubular body; At least one of the proximal end region and the distal end region is configured to resist movement within the body cavity as a result of an applied force, and The area configured to resist movement is: Multiple longitudinally extended voids; and It has a plurality of longitudinal-extended dynamic coupling features formed between adjacent longitudinal-extended voids; A medical stent configured such that a plurality of longitudinally extending dynamic coupling features spread radially outward in response to an applied force to dissipate the applied force.
13. In paragraph 12, the region configured to resist movement as a result of an authorized force is a medical stent comprising a distal end region.
14. In paragraph 12, the region configured to resist movement as a result of an authorized force is a medical stent comprising a proximal end region.
15. It is a medical stent, It includes an elongated tubular body extending from the proximal end region to the distal end region; The slender tubular body comprises two or more longitudinally extending voids extending proximally from the distal end of the slender tubular body and two or more longitudinally extending dynamic coupling features formed between them; A medical stent configured such that two or more longitudinally extending dynamic coupling features independently expand radially outward in response to an applied perforating force to dissipate the applied perforating force.

Description

Stent with dynamic movement-prevention properties (Cross-reference to related applications) This application claims the benefit and priority to U.S. provisional application No. 63/581,074, filed on September 7, 2023, the contents of which are incorporated herein by reference. The present disclosure generally relates to methods and apparatus for various diseases. More specifically, the present disclosure relates to various configurations of stents, methods of manufacturing, and methods of use. Implantable stents are devices placed within body structures, such as blood vessels, the esophagus, trachea, bile ducts, colon, small intestine, stomach, or body cavities, to provide support and maintain structural patency. These devices are manufactured by any one of various manufacturing methods and can be used according to any one of these methods for various applications. Each known medical stent delivery system and method has specific advantages and disadvantages. For example, in some stents, the compressibility and flexibility characteristics that aid in stent delivery may result in a stent having a tendency to move from its originally deployed position within the body cavity. For instance, a stent designed to be placed in the esophagus or gastrointestinal tract may have a tendency to move due to peristalsis (i.e., the involuntary contraction and relaxation of the muscles of the esophagus, intestine, and large intestine that push the contents of the tube through it). The present disclosure can be more fully understood by considering the following description of various examples together with the accompanying drawings. Figure 1 is a schematic diagram of an exemplary medical stent. Figure 2 is a schematic diagram of an exemplary medical stent. Figures 3a and 3b are schematic end views of an exemplary medical stent. FIGS. 4a and 4b illustrate how an exemplary medical stent responds to an applied axial force. Figure 5 is a schematic diagram of an exemplary medical stent. Figure 6 is a schematic diagram of an exemplary medical stent. Figure 7 is a schematic diagram of an exemplary medical stent. Figure 8 is a schematic diagram of an exemplary medical stent. Figure 9 is a schematic diagram of an exemplary medical stent. Figure 10 is a schematic diagram of an exemplary medical stent. Figure 11 is a schematic diagram of a part of an exemplary medical stent. Figure 12 is a schematic diagram of a part of an exemplary medical stent. Although various modifications and alternative forms are possible for the present disclosure, specific details are illustrated by example in the drawings and will be described in detail. However, it should be understood that the present disclosure is not intended to be limited to the specific examples described. On the contrary, the intention is to encompass all modifications, equivalents, and alternatives that fall within the spirit and scope of the present disclosure. The following description should be read with reference to the drawings, and similar elements in different drawings are similarly numbered. The drawings are not necessarily drawn to scale and are intended to illustrate examples rather than limit the scope of the present disclosure. Although examples of various elements have been illustrated, a person skilled in the art will understand that many of the provided examples have suitable alternatives available. In this specification, all numbers are deemed to be modified by the term "about" unless otherwise specified. Notation of a numeric range based on two endpoints includes all numbers contained within that range (e.g., 1 through 5 include 1, 1.5, 2, 2.75, 3, 3.80, 4, and 5). Singular and definite articles used in this specification and the appended claims include plural forms unless otherwise specified. The term "or" used in this specification and the appended claims generally includes "and/or" unless otherwise specified. It should be noted that references in the specification such as "one embodiment," "some embodiments," and "other embodiments" indicate that while the described embodiments may possess specific features, structures, or characteristics, not all embodiments are necessarily capable of possessing such specific features, structures, or characteristics. Furthermore, such expressions do not necessarily refer to the same embodiment. Additionally, when specific features, structures, or characteristics are described in relation to an embodiment, said features, structures, or characteristics are deemed applicable to other embodiments, regardless of whether they were explicitly described, unless explicitly stated otherwise. Stents are used in various different body cavities, such as the vascular system and various parts of the gastrointestinal system. In some cases, particularly when applied to the gastrointestinal tract, the inserted stent may be exposed to various different forces. For example, the gastrointestinal system may perceive the stent as a foreign substance that m