Dilation tube suitable for narrow position and provided with separation and combination structure

Abstract

The invention relates to the field of expansion tubes, in particular to an expansion tube suitable for a narrow position and provided with a separation and combination structure, which comprises an outer expansion tube, an inner expansion tube and an outer expansion tube, the guide tensioning mechanism comprises a spring for pushing the arc-shaped expansion plate to do centrifugal motion; the contraction driving mechanism comprises a supporting inner pipe and a driving rod which adsorbs the arc-shaped expansion plate to do centripetal motion; the end part of the supporting inner pipe is rotationally connected with the middle part of the driving rod, so that magnetic attraction force is intermittently generated between the driving rod and the arc-shaped expansion plate when the driving rod is rotated, and the arc-shaped expansion plate is made of a ferromagnetic material; the connecting soft sheets and the arc-shaped expansion plates are alternately distributed; the contraction driving mechanism further comprises a guide shaft. The invention provides the dilating tube with the separated combined structure suitable for the narrow position, the diameter of the dilating tube is changed, and the dilating tube is convenient to use.

Description

Technical Field

[0001] The present invention relates to the field of expansion tubes, in particular to an expansion tube with a separation and combination structure suitable for a narrow position. Background Art

[0002] A dilation tube is a commonly used medical tube that is inserted into a patient's body to dilate body tissue to facilitate treatment of the patient's affected area.

[0003] The expansion tube commonly used now is a one-piece tube with a thin front end and a thick back end. When the patient's body tissue is to be expanded, the expansion tube needs to be inserted to a certain depth. There is a technical problem that the diameter of the expansion tube cannot be changed. It is urgent to design an expansion tube with a separated and combined structure suitable for narrow positions.

[0004] It should be noted that the above information disclosed in this Background section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Summary of the Invention

[0005] The purpose of the present invention is to provide an expansion tube with a separation and combination structure suitable for narrow positions to solve the above problems.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A dilation tube with a separation and combination structure suitable for use in stenotic locations, comprising:

[0008] An expansion outer tube, comprising a plurality of arc-shaped expansion plates and a connecting soft sheet connected in sequence;

[0009] a guide tensioning mechanism including a spring for pushing the arc-shaped expansion plate to perform centrifugal motion;

[0010] A contraction drive mechanism including a drive rod that supports the inner tube and absorbs the arc-shaped expansion plate to perform centripetal motion;

[0011] The end of the supporting inner tube is rotatably connected to the middle of the driving rod, so that when the driving rod is rotated, magnetic attraction is intermittently generated between the driving rod and the arc-shaped expansion plate.

[0012] In an optional embodiment, the arc-shaped expansion plate is made of ferromagnetic material;

[0013] The connecting soft sheets and the arc-shaped expansion plates are alternately distributed;

[0014] The contraction drive mechanism further includes a guide shaft, one end of which is connected to the arc-shaped expansion plate, and the other end of which passes through the supporting inner tube;

[0015] The two ends of the spring are respectively connected to the inner side of the arc-shaped expansion plate and the outer side of the supporting inner tube.

[0016] In an optional embodiment, the arc-shaped expansion plate is made of iron;

[0017] The guide shaft is located inside the spring.

[0018] In an optional embodiment, the end of the supporting inner tube is threadedly connected to the middle portion of the driving rod;

[0019] One end portion of the driving rod is located outside the expansion outer tube and the support inner tube.

[0020] In an optional embodiment, a hollow portion is provided on the side of the supporting inner tube to avoid blocking the magnetic attraction between the driving rod and the arc-shaped expansion plate;

[0021] The end portion of the supporting inner tube includes a connecting portion threadedly connected to the driving rod.

[0022] In an optional embodiment, the hollow portion is symmetrical about the driving rod;

[0023] The connecting portion is located outside the expansion outer tube.

[0024] In an optional embodiment, a circle of strong magnet is provided on a section of the driving rod located on the supporting inner tube;

[0025] The end of the driving rod is provided with a handle.

[0026] In an optional embodiment, the strong magnets correspond to the positions of the hollow portions, so that when the driving rod is rotated, all the strong magnets are simultaneously in the same straight line with the corresponding hollow portions;

[0027] The handle is located outside the expansion outer tube and the support inner tube.

[0028] The beneficial effects of the present invention are: providing an expansion tube with a separate combination structure suitable for a narrow position, by cooperating with the expansion outer tube, the guide tensioning mechanism and the contraction drive mechanism, an expansion tube with a separate combination structure suitable for a narrow position is made to replace the expansion tube whose diameter size cannot be changed, so that when the expansion tube expands the patient's body tissue, the outside of the expansion tube can be made to perform centrifugal and centripetal motion, completing the contraction effect of the expansion tube, realizing the change of the diameter of the expansion tube, and facilitating the use of the expansion tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 This is a schematic diagram of the overall structure of an expansion tube with a separated and combined structure suitable for use in a narrow location, provided in an embodiment of the present disclosure.

[0031] Figure 2 This is a schematic diagram of the overall structure of a dilation tube with a separate and combined structure suitable for use in a narrow location, provided in an embodiment of the present disclosure.

[0032] Figure 3 This is another schematic diagram of the overall structure of an expansion tube with a separate and combined structure suitable for use in a narrow location, provided in an embodiment of the present disclosure.

[0033] Figure 4 This is a schematic diagram of a cross-section of an expansion tube with a separated and combined structure suitable for use in a stenotic location, provided in an embodiment of the present disclosure.

[0034] In the figure: 1, expansion outer tube; 11, arc expansion plate; 12, connecting film;

[0035] 2. Guide tensioning mechanism; 21. Guide shaft; 22. Spring;

[0036] 3. Contraction drive mechanism; 31. Support inner tube; 32. Hollow portion; 33. Connecting portion; 34. Drive rod; 35. Strong magnet; 36. Handle. DETAILED DESCRIPTION

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] In this document, when it is mentioned that a first component is located on a second component, this may mean that the first component may be directly formed on the second component, or that a third component may be interposed between the first component and the second component. In addition, in the drawings, the thickness of components may be exaggerated or reduced in order to effectively describe technical content.

[0039] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Thus, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations, aspects, or designs. Instead, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0041] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0042] refer to Figures 1 to 4 At least one embodiment provides an expansion tube with a separate and combined structure suitable for use in a stenotic location, comprising: an expansion outer tube 1, which comprises a plurality of arc-shaped expansion plates 11 and a connecting soft film 12 connected in sequence, thereby forming an expansion outer tube 1 whose diameter can be changed; a guide tensioning mechanism 2, which comprises a spring 22 for pushing the arc-shaped expansion plates 11 to perform centrifugal motion, providing power for the expansion outer tube 2 to perform centrifugal motion and expansion; a contraction drive mechanism 3, which comprises a supporting inner tube 31 and a drive rod 34 for adsorbing the arc-shaped expansion plates 11 to perform centripetal motion, providing power for the expansion outer tube 2 to perform centrifugal motion and expansion; The end of the supporting inner tube 31 is rotatably connected to the middle of the driving rod 34, so that when the driving rod 34 is rotated, a magnetic attraction force is intermittently generated between it and the arc-shaped expansion plate 11; when the driving rod 34 is rotated, when the driving rod 34 does not generate a magnetic attraction force with the expansion outer tube 1, the arc-shaped expansion plate 11 performs centrifugal movement under the action of the spring 22 to achieve expansion, and when the driving rod 34 and the expansion outer tube 1 generate a magnetic attraction force, the arc-shaped expansion plate 11 performs centrifugal movement under the adsorption of the driving rod 34, thereby achieving the contraction of the expansion outer tube 1.

[0043] In some embodiments, the arc expansion plate 11 is made of ferromagnetic material and is suitable for being adsorbed by a strong magnet 35; the connecting soft film 12 and the arc expansion plate 11 are alternately distributed to ensure that the connecting soft film is evenly stretched when the arc expansion plate 11 performs centrifugal motion; the contraction drive mechanism 3 also includes a guide shaft 21, one end of the guide shaft 21 is connected to the arc expansion plate 11, and the other end passes through the supporting inner tube 31 to ensure the accuracy of the movement path of the arc expansion plate 11; the two ends of the spring 22 are respectively connected to the inner side of the arc expansion plate 11 and the outer side of the supporting inner tube 31, to provide thrust for the arc expansion plate 11 to perform centrifugal motion.

[0044] In some embodiments, the arc-shaped expansion plate 11 is made of iron; the guide shaft 21 is located inside the spring 22 .

[0045] In some embodiments, the end of the supporting inner tube 31 is threadedly connected to the middle of the driving rod 34, which is used to facilitate the rotation of the driving rod 34 so that the strong magnet 35 on it is intermittently directed toward the hollow portion 32 and the arc-shaped expansion plate 11, thereby adsorbing the arc-shaped expansion plate 11; one end of the driving rod 34 is located outside the expansion outer tube 1 and the supporting inner tube 31, which is used to facilitate the rotation of the driving rod 34.

[0046] In some embodiments, a hollow portion 32 is provided on the side of the support inner tube 31 to avoid blocking the magnetic attraction between the drive rod 34 and the arc-shaped expansion plate 11; the end of the support inner tube 31 includes a connecting portion 33 threadedly connected to the drive rod 34.

[0047] In some embodiments, the hollow portion 32 is symmetrical about the driving rod 34 and is used to correspond to the position of the arc-shaped expansion plate 11; the connecting portion 33 is located outside the expansion outer tube 1.

[0048] In some embodiments, a circle of strong magnet 35 is provided at a section of the driving rod 34 supporting the inner tube 31 ; a handle 36 is provided at the end of the driving rod 34 for facilitating the rotation of the driving rod 34 .

[0049] In some embodiments, the strong magnets 35 correspond to the positions of the hollow portions 32, so that when the driving rod 34 is rotated, all the strong magnets 35 are simultaneously on the same straight line with the corresponding hollow portions 32, ensuring that all the arc-shaped expansion plates 11 are simultaneously subjected to magnetic attraction and the magnetic attraction disappears at the same time; the handle 36 is located outside the expansion outer tube 1 and the support inner tube 31.

[0050] Working principle: When a dilator tube with a separation and combination structure suitable for a narrow position is taken out before use, the strong magnet 35, the hollow part 32 and the arc-shaped dilator plate 11 are in a straight line, and the strong magnet 35 attracts the arc-shaped dilator plate 11 so that it compresses the spring 22; when a dilator tube with a separation and combination structure suitable for a narrow position is used: the operator holds one end of the driving rod 34 and inserts the dilator outer tube 1 into the affected part of the patient that needs to be dilated, and then the operator rotates the driving rod 34. During this process, the driving rod 34 drives the strong magnet 35 on it to rotate, so that the strong magnet 35 is away from the arc-shaped dilator plate 1 1. At the same time, due to the shielding effect of the supporting inner tube 31, the magnetic attraction of the strong magnet 35 on the arc expansion plate 11 is reduced during this process. Under the action of the spring 22, the arc expansion plate 11 performs centrifugal motion to expand the patient's affected area; then the operator begins to treat the affected area. When the treatment of the affected area is completed, the operator rotates the driving rod 34 again to make the strong magnet 35, the hollow portion 32 and the arc expansion plate 11 reach a straight line. At this time, the strong magnet 35 attracts the arc expansion plate 11 to perform centripetal motion to compress the spring 22. Finally, the operator takes away an expansion tube with a separation and combination structure suitable for a narrow position.

[0051] In the description of the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0052] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0053] While this patent document contains many specifics, they should not be construed as limitations on the scope of any invention or the claims, but rather as descriptions of features for particular embodiments of particular inventions. Certain features described in this patent document in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various functions described in the context of a single embodiment can also be implemented separately in multiple embodiments, or in any suitable subcombination. Furthermore, while the features described above may be described as functioning in certain combinations, or even initially claimed to be so, in some cases one or more features in a claim combination may be removed from the combination, and a claim combination may be directed to a subcombination or variations of a subcombination.

[0054] Likewise, while operations may be depicted in a particular order in the accompanying drawings, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, in order to achieve desired results. Furthermore, the separation of various system components in the embodiments of this patent document should not be understood as requiring such separation in all embodiments.

[0055] Only a few implementations and examples are described, and other implementations, enhancements, and variations can be made based on what is described and illustrated in this patent document.

[0056] Although several embodiments are provided in this disclosure, it should be understood that the disclosed systems and methods may be embodied in many other specific forms without departing from the spirit or scope of the present disclosure. The present examples are to be considered illustrative rather than restrictive, and the present invention is not to be construed as being limited to the details given. For example, various elements or components may be combined or integrated into another system, or certain features may be omitted or not implemented.

Claims

1. A dilatation tube with a separation and combination structure suitable for use in stenotic locations, characterized in that: include: An expansion outer tube (1) comprising a plurality of arc-shaped expansion plates (11) and a connecting soft sheet (12) connected in sequence; A guide tensioning mechanism (2) comprising a spring (22) for pushing the arc-shaped expansion plate (11) to perform centrifugal motion; A contraction drive mechanism (3) includes a drive rod (34) that supports the inner tube (31) and absorbs the arc-shaped expansion plate (11) to perform centripetal movement; The end of the supporting inner tube (31) and the middle of the driving rod (34) are rotatably connected so that when the driving rod (34) is rotated, a magnetic attraction force is intermittently generated between the driving rod (34) and the arc-shaped expansion plate (11).

2. The dilatation tube with a separation and combination structure suitable for use in stenotic locations according to claim 1, characterized in that: The arc-shaped expansion plate (11) is made of ferromagnetic material; The connecting soft sheets (12) and the arc-shaped expansion plates (11) are alternately distributed; The contraction drive mechanism (3) further includes a guide shaft (21), one end of which is connected to the arc-shaped expansion plate (11), and the other end of which passes through the supporting inner tube (31); The two ends of the spring (22) are respectively connected to the inner side of the arc-shaped expansion plate (11) and the outer side of the supporting inner tube (31).

3. The dilatation tube with a separation and combination structure suitable for use in stenotic locations according to claim 2, characterized in that: The material of the arc-shaped expansion plate (11) is iron; The guide shaft (21) is located inside the spring (22).

4. The dilation tube with a separation and combination structure suitable for use in stenotic locations according to claim 1, characterized in that: The end of the supporting inner tube (31) is threadedly connected to the middle of the driving rod (34); One end portion of the driving rod (34) is located outside the expansion outer tube (1) and the support inner tube (31).

5. The dilatation tube with a separation and combination structure suitable for use in stenotic locations according to claim 1, characterized in that: The side surface of the supporting inner tube (31) is provided with a hollow portion (32) to avoid blocking the magnetic attraction between the driving rod (34) and the arc-shaped expansion plate (11); The end of the supporting inner tube (31) comprises a connecting portion (33) threadedly connected to the driving rod (34).

6. The dilatation tube with a separation and combination structure suitable for use in stenotic locations according to claim 5, characterized in that: The hollow portion (32) is symmetrical with respect to the driving rod (34); The connecting portion (33) is located outside the expansion outer tube (1).

7. The dilatation tube with a separation and combination structure suitable for use in stenosis according to claim 1, characterized in that: The driving rod (34) is located at a section of the supporting inner tube (31) and is provided with a circle of strong magnet (35); The end of the driving rod (34) is provided with a handle (36).

8. The dilatation tube with a separation and combination structure suitable for use in stenosis according to claim 8, characterized in that: The strong magnets (35) are positioned correspondingly to the hollow portions (32), so that when the driving rod (34) is rotated, all the strong magnets (35) are simultaneously aligned with the corresponding hollow portions (32); The handle (36) is located outside the expansion outer tube (1) and the support inner tube (31).

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