阅读说明：本技术 定型芯轴 (Shaping mandrel ) 是由 谷子琦 明景 赵海娜 马晓曼 阙亦云 于 2020-05-29 设计创作，主要内容包括：本发明涉及定型芯轴,所述定型芯轴包括轴部、定型部及至少一对固定部,所述定型部包括塑型部,所述定型部由至少两瓣单体结构拼接构成,所述固定部与所述定型部可拆卸地相连接,用于使所述至少两瓣单体结构在所述轴部外表面契合形成一体。本发明中定型部通过线切割的方式切割成多瓣单体结构,其具有塑型部和非塑型部,塑型部可以设置成螺旋型、平行线圈型等不同的螺纹,且均可拼接成整体或拆卸,打破了人造血管的螺纹结构的限制。(The invention relates to a shaping mandrel which comprises a shaft part, a shaping part and at least one pair of fixing parts, wherein the shaping part comprises a shaping part, the shaping part is formed by splicing at least two single structures, and the fixing parts are detachably connected with the shaping part and used for enabling the at least two single structures to be matched with the outer surface of the shaft part to form a whole. The shaping part is cut into a multi-petal monomer structure in a wire cutting mode and is provided with a shaping part and a non-shaping part, the shaping part can be arranged into different threads such as a spiral thread and a parallel coil thread and can be spliced into a whole or detached, and the limitation of the thread structure of the artificial blood vessel is broken.)

1. Design dabber, its characterized in that: the shaping mandrel comprises a shaft part, a shaping part and at least one pair of fixing parts, wherein the shaping part is formed by splicing at least two single structures, and the fixing parts are detachably connected with the shaping part and used for enabling the at least two single structures to fit around the outer surface of the shaft part to form a whole.

2. The sizing mandrel as claimed in claim 1 wherein: the shaft portion includes a first portion, a second portion, and a transition portion formed at a junction of the first portion and the second portion.

3. The sizing mandrel as claimed in claim 2 wherein: the first part is of a frustum structure, and the taper angle of the first part is not more than 5 degrees; the transition portion is formed at the joint of the first portion maximum diameter end and the second portion, and the first portion minimum diameter end is a free end.

4. The sizing mandrel as claimed in claim 2 wherein: the first part is of a cylinder structure; the transition part is formed at the joint of one end of the first part and the second part, and the other end of the first part is a free end.

5. Sizing mandrel according to any one of claims 1 to 4, wherein: the design portion is including the type portion of moulding and two non-type portions of moulding, two non-type portions of moulding set up respectively in the both ends of the type portion of moulding, the design portion has along its axially extended inner chamber.

6. The sizing mandrel as claimed in claim 5 wherein: the shaping portion is a hollow cylinder with threads on the outer surface, the thread height of the threads is 0.1-2 mm, the thread pitch is 0.5-5 mm, and the length of the shaping portion is 5-150 cm.

7. The sizing mandrel as claimed in claim 5 wherein: the molding part is a hollow cylinder with parallel coils on the outer surface, the height of the coils is 0.1-2 mm, the distance between the coils is 0.5-5 mm, and the length of the molding part is 5-150 cm.

8. The sizing mandrel as claimed in claim 5 wherein: each non-molding part is of a hollow frustum structure, the taper angle of each non-molding part is not more than 5 degrees, the maximum outer diameter of each non-molding part is not more than the outer diameter of each molding part, and the length of each non-molding part is 5-10 cm.

9. The sizing mandrel as claimed in claim 5 wherein: each non-molding part is of a hollow cylinder structure, the outer diameter of each non-molding part is smaller than or equal to that of each molding part, and the length of each non-molding part is 5-10 cm.

10. The sizing mandrel as claimed in claim 5 wherein: when the first part is in a frustum structure, the inner diameter of at least each non-molding part is larger than the minimum diameter of the first part and smaller than the maximum diameter of the first part.

11. The sizing mandrel as claimed in claim 5 wherein: when the first part is a cylinder structure, the inner diameter of at least each non-molding part is the same as the diameter of the first part.

12. The sizing mandrel as claimed in claim 10 wherein: the fixing part is two hollow fastening devices, each hollow fastening device is detachably connected with each non-molding part at least, and the inner diameter of each hollow fastening device is larger than or equal to the minimum outer diameter of each non-molding part and smaller than or equal to the maximum outer diameter of each non-molding part.

13. The sizing mandrel as claimed in claim 11 wherein: the fixing part is two hollow fastening devices, each hollow fastening device is detachably connected with each non-molding part at least, and the inner diameter of each hollow fastening device is equal to the outer diameter of each non-molding part.

14. Sizing mandrel according to claim 12 or 13, wherein: the hollow fastening device is a tapered sleeve.

15. Sizing mandrel according to claim 12 or 13, wherein: the hollow fastening device is an annular hoop.

16. Sizing mandrel according to any one of claims 12 or 13, wherein: the hollow fastening means has an inner diameter greater than the diameter of the second portion.

17. The sizing mandrel as claimed in claim 16 wherein: the transition part is in frustum transition, and the maximum diameter of the transition part is the same as the diameter of the second part.

18. The sizing mandrel as claimed in claim 16 wherein: the transition portion is a cylindrical transition, and the diameter of the transition portion is the same as the diameter of the second portion.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a shaping mandrel for a threaded blood vessel.

Background

The artificial blood vessel is a common medical apparatus for replacement when treating angiogenesis lesion, and the existing artificial blood vessel is mainly prepared by weaving PET yarns and preparing expanded polytetrafluoroethylene. The artificial blood vessel woven by the PET yarns has poor flexibility and supporting force due to the soft characteristic of the fabric, and is easy to fold or shrink. Therefore, it is necessary to corrugate the tubular fabric, i.e., to shape the original flat tubular fabric into a thread-shaped artificial blood vessel with undulation on a mold. The corrugated thread-shaped artificial blood vessel has good bending property and longitudinal expansion and contraction rate, and can be used as an artificial blood vessel.

At present, the existing corrugating treatment method adopts a mandrel like a screw, the surface of the mandrel is provided with a spiral thread, a woven tubular fabric is sleeved on the mandrel, yarn winding, sizing and the like are utilized, and finally the tubular fabric is screwed off from the mandrel to obtain a thread type artificial blood vessel; however, the prior art has the following defects: the shape of the screw thread is only a spiral shape, and other shapes such as a parallel ring shape and the like cannot be made; (II) the screwing process takes longer; (iii) the twisting process risks fraying the fabric.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, it is an object of the present invention to provide a sizing mandrel. Compared with the prior art, the invention can realize the manufacture of artificial blood vessels with different thread types, has convenient disassembly process and is not easy to abrade fabrics.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the utility model provides a design dabber, the design dabber includes axial region, design portion and at least a pair of fixed part, design portion comprises two at least lamella monomer structures concatenations, the fixed part with design portion detachably is connected, is used for making two at least lamella monomer structures surround axial region surface agrees with to form integratively.

The further technical scheme is as follows:

preferably, the shaft portion comprises a first portion, a second portion and a transition portion, the transition portion being formed at the junction of the first portion and the second portion.

Preferably, the first portion is of a frustum structure, and the taper angle of the first portion is not greater than 5 °; the transition portion is formed at the joint of the first portion maximum diameter end and the second portion, and the first portion minimum diameter end is a free end.

Preferably, the first part is of a cylindrical structure; the transition part is formed at the joint of one end of the first part and the second part, and the other end of the first part is a free end.

Preferably, the shaping part comprises a shaping part and two non-shaping parts, the two non-shaping parts are respectively arranged at two ends of the shaping part, and the shaping part is provided with an inner cavity extending along the axial direction of the shaping part.

Preferably, the molding part is a hollow cylinder with a thread on the surface, the thread height of the thread is 0.1-2 mm, the thread pitch is 0.5-5 mm, and the length of the molding part is 5-150 cm.

Preferably, the molding part is a hollow cylinder with parallel coils on the outer surface, the height of the coils is 0.1-2 mm, the distance between the coils is 0.5-5 mm, and the length of the molding part is 5-150 cm.

Preferably, each non-molding part is of a hollow frustum structure, the taper angle of each non-molding part is not more than 5 degrees, the maximum outer diameter of each non-molding part is not more than the outer diameter of the molding part, and the length of each non-molding part is 5-10 cm.

Preferably, each non-molding part is of a hollow cylinder structure, the outer diameter of each non-molding part is smaller than or equal to that of each molding part, and the length of each non-molding part is 5-10 cm.

Preferably, when the first portion is a frustum structure, at least each of the non-molding portions has an inner diameter greater than a minimum diameter of the first portion and less than a maximum diameter of the first portion.

Preferably, when the first portion is a cylindrical structure, at least each of the non-molding portions has an inner diameter equal to a diameter of the first portion.

Preferably, the fixing part is two hollow fastening devices, each hollow fastening device is detachably connected with at least one non-molding part, and the inner diameter of each hollow fastening device is greater than or equal to the minimum outer diameter of the non-molding part and less than or equal to the maximum outer diameter of the non-molding part.

Preferably, the fixing part is two hollow fastening devices, each hollow fastening device is detachably connected with at least one non-molding part, and the inner diameter of each hollow fastening device is equal to the outer diameter of each non-molding part.

Preferably, the fastening means is a tapered sleeve.

Preferably, the fastening means is an annular clip. Preferably, the inner diameter of the fastening means is greater than the diameter of the second portion.

Preferably, the transition part is a frustum transition, and the maximum diameter of the transition part is the same as the diameter of the second part.

Preferably, the transition portion is a cylindrical transition, and the diameter of the transition portion is the same as the diameter of the second portion.

The invention has the following beneficial technical effects:

the shaping part is cut into a multi-petal monomer structure in a wire cutting mode and is provided with a shaping part and a non-shaping part, the shaping part can be arranged into different threads such as a spiral thread and a parallel coil thread and can be spliced into a whole or detached, and the limitation of the thread structure of the artificial blood vessel is broken.

The disassembly process is convenient, the long-time screwing mode in the prior art is avoided, the fixing part, the shaping part and the shaft part are sequentially matched with each other by utilizing the fixing part and each matching point, the fabric is not damaged, the disassembly time is shortened to 1min from 15min in the prior art, and a large amount of time is saved.

Drawings

Fig. 1 shows a schematic structural view of a sizing mandrel according to an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of a shaping mandrel according to an embodiment of the present invention after cutting a shaping portion.

Fig. 3 is a schematic cross-sectional structural diagram of a fixing portion of a sizing mandrel according to an embodiment of the present invention.

Fig. 4 shows a schematic structural diagram of a middle shaft portion of a sizing mandrel according to an embodiment of the present invention.

Fig. 5 shows a schematic structural diagram of a shaping portion in a shaping mandrel according to an embodiment of the present invention.

Fig. 6 is a schematic view illustrating an installation of the middle shaft portion, the shaping portion, and the fixing portion of the shaping mandrel according to an embodiment of the present invention.

Fig. 7 shows a schematic structural diagram of a middle shaft part of the sizing mandrel provided by the second embodiment of the invention.

Fig. 8 shows a schematic structural diagram of a shaping portion in a shaping mandrel provided by the second embodiment of the present invention.

Fig. 9 is a schematic view illustrating an installation of the middle shaft portion, the shaping portion, and the fixing portion of the shaping mandrel according to the second embodiment of the present invention.

In the drawings, the reference numbers: 1. a shaft portion; 11. a first part; 12. a second section; 13. a transition section; 2. a shaping part; 21. a molding part; 22. a non-molding portion; 23. a first monomer structure; 24. a second monomeric structure; 25. a third monomer structure; 26. a fourth monomer structure; 3. a fixed part.

Detailed Description

The following describes the setting mandrel according to the present invention in further detail with reference to the accompanying fig. 1 to 7 and the detailed description. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are all used in a non-precise scale for the purpose of facilitating and distinctly aiding in the description of the embodiments of the present invention. To make the objects, features and advantages of the present invention comprehensible, reference is made to the accompanying drawings. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the implementation conditions of the present invention, so that the present invention has no technical significance, and any structural modification, ratio relationship change or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

As shown in fig. 1, which is a schematic structural diagram of a shaping mandrel according to an embodiment of the present invention, the shaping mandrel includes a shaft portion 1, a shaping portion 2, and at least a pair of fixing portions 3, where the shaping portion 2 is formed by splicing at least two single structures, and the fixing portions 3 are detachably connected to the shaping portion 2, so that the at least two single structures are fit to form a whole on an outer surface of the shaft portion 1.

The following is a further understanding of the two pairs of sizing mandrels described in example one and example two.

The first embodiment is as follows:

as shown in fig. 1, the shaping mandrel includes a shaft portion 1, a shaping portion 2, and a pair of fixing portions 3. The shaping part 2 comprises a shaping part 21, the shaping part 2 is formed by splicing at least two single structures, and the fixing part 3 is detachably connected with the shaping part 2 and used for enabling the at least two single structures to be matched with the outer surface of the shaft part 1 to form a whole.

As shown in fig. 4, the specific structure of the shaft portion is described in detail below:

the shaft portion comprises a first portion 11, a second portion 12 and a transition portion 13, the transition portion 13 being formed at the junction of the first portion 11 and the second portion 12. The second portion 12 is a handle for holding, and the shaft portion is made of metal material or plastic material, preferably, the shaft portion 1 is made of stainless steel material in this embodiment.

As shown in fig. 4, the transition portion 13 is a frustum transition, and the maximum diameter of the transition portion 13 is the same as the diameter of the second portion 12.

As shown in fig. 4, the first portion 11 has a frustum structure, and the taper angle of the first portion 11 is not greater than 5 °. The taper angle of the first portion 11 is an included angle between two generatrices of the axial section of the first portion 11 (a section passing through the central axis of the first portion 11). The transition portion 13 is formed at the connection of the largest diameter end of the first portion 11 and the second portion 12, and the smallest diameter end of the first portion 11 is a free end. Preferably, in the first embodiment, the length of the first portion 11 is 100cm, the length of the transition portion 13 and the length of the second portion 12 are 15cm, and the taper angle of the first portion 11 is 0.15 °. The taper of the first portion 11 allows for more convenient removal of the shaft portion 1.

The specific structure of the shaping part 2 is described in detail below:

as shown in fig. 2, the shaped portion 2 is formed by cutting into four single structures by wire cutting and splicing, the four single structures are a first single structure 23, a second single structure 24, a third single structure 25 and a fourth single structure 26, and the four single structures are numbered to realize sequential splicing on the shaft portion 1.

As shown in fig. 5, the shaped portion 2 includes a shaped portion 21 and two non-shaped portions 22, the two non-shaped portions 22 are respectively disposed at two ends of the shaped portion 21, and the shaped portion 2 has an inner cavity extending along an axial direction thereof.

As shown in FIG. 5, the molding part 21 is a hollow cylinder with threads on the surface, the thread height of the threads is 0.1-2 mm, the thread pitch is 0.5-5 mm, and the length of the molding part 21 is 5-150 cm. Preferably, in the first embodiment, the length of the molding part 21 is 50cm, the height of the screw is 0.5mm, the pitch of the screw is 1mm, and the outer diameter of the screw is 22 mm.

As shown in fig. 5, each of the non-molding portions 22 has a hollow frustum structure, the taper angle of each of the non-molding portions 22 is not greater than 5 °, the maximum outer diameter of each of the non-molding portions 22 is not greater than the outer diameter of the molding portion 21, and the length of each of the non-molding portions 22 is 5 to 10 cm. The taper angle of the non-molding portion 22 in the first embodiment is 2 °, the length of each non-molding portion 22 provided at both left and right ends of the molding portion 21 in the first embodiment is 10cm, and the maximum diameter of the non-molding portion 22 is 21 m.

As shown in fig. 4 to 7, when the first portion 11 has a frustum structure, at least an inner diameter of each non-molding portion 21 is larger than a minimum diameter of the first portion 11 and smaller than a maximum diameter of the first portion 11, so as to ensure that the first portion 11 can penetrate through the molding portion 21 and be matched with the molding portion 21.

As shown in fig. 4 to 7, a first fitting point (not shown) is formed at a position 20 to 50cm to the left from the right end of the first portion 11, and since the inner diameter of the non-molding portion 21 is larger than the minimum diameter of the first portion 11 and smaller than the maximum diameter of the first portion 11, the inner diameter of the non-molding portion 21 is the same as the diameter of the first portion 11 at the first fitting point, and thus the first portion 11 and the non-molding portion 21 are fitted at the first fitting point. Preferably, the first engagement point is located 20cm to the left from the rightmost end of the first portion 11, 5cm to the right of the rightmost end of the first portion 11 is the transition portion 13, the diameter of the first portion 11 at the first engagement point is 12mm, and the total length of the first portion 11 at the left side of the first engagement point is 80 cm. The distance of the first engagement point with respect to the first portion 11 may vary depending on the operating conditions, as long as it is ensured that the shaft portion 2 does not slide to the right along the shaft portion 1.

The middle shaping part 2 is formed by cutting a whole metal bar or a plastic bar, the center of the bar is hollowed, the inside of the shaping part 2 forms a hollow structure, and a second fit point is formed at the junction of the non-shaping part 22 and the shaping part 21.

The following describes the specific structure of the fixing portion 3:

as shown in fig. 3, the fixing portion 3 is two hollow fastening devices 3, and the inner diameter of the hollow fastening devices 3 is larger than the diameter of the second portion 12. Each of the hollow fastening devices 3 is detachably connected with at least one of the non-molded parts 21, and the inner diameter of the hollow fastening device 3 is larger than or equal to the minimum outer diameter of the non-molded part 21 and smaller than or equal to the maximum outer diameter of the non-molded part 21. Preferably, in the first embodiment, the hollow fastening device 3 is a tapered sleeve 3, the tapered sleeve 3 has a taper angle inside, the taper angle inside the tapered sleeve 3 is 2 °, and the thickness of the tapered sleeve is 1-10 mm.

In the first embodiment, the taper angle inside the tapered sleeve 3 is the same as the taper angle of the non-molding portion 22, and the tapered sleeve 3 and the molding portion 2 are engaged at the second engagement point, so that the fixing portion 3 fixes the individual structures of the molding portion 2 through the non-molding portion 22.

According to the operating mode of difference, fixed part 3 also can choose for use two annular clamps, every annular clamp with non-type of moulding 21 can be dismantled even, the internal diameter more than or equal to of annular clamp the minimum external diameter of non-type of moulding 21, less than or equal to the maximum external diameter of non-type of moulding 21.

As shown in fig. 6, the assembly process of the first embodiment is as follows;

when in use, the first monomer structure 23, the second monomer structure 24, the third monomer structure 25 and the fourth monomer structure 26 of the shaping part 2 are spliced on the outer surface of the first part 11 in the shaft part 1 according to the numerical sequence, and the monomer structures are positioned on the left side of the first conjunction point during splicing. After splicing, the right conical sleeve 3 is sleeved at the right non-plastic part 22 of the shaping part 2, namely the conical sleeve 3 is matched with the shaping part 2 at a second matching point, thread alignment is ensured, then the left conical sleeve 3 is sleeved at the left non-plastic part 22 of the shaping part 2 in the same mode, at the moment, the shaping part 2 does not reach the first matching point, so that looseness exists, the left conical sleeve 3 and the right conical sleeve 3 are clamped, the second part 12 is pushed leftwards, and the shaping part 2 is pushed to the first matching point to complete integral assembly.

After the assembly is completed, the tubular fabric is sleeved on the assembled shaping mandrel of the first embodiment, the yarn is tightened into the wave trough of the shaping part 21, and after all the winding is completed, the fabric can be fixed into a thread shape through heat setting.

During the dismantlement, take off the winding line, take out both sides taper sleeve, then take out axial region 1, first portion 11 is the frustum structure this moment for axial region 1 conveniently takes out, and each monomer structure of design portion 2 loses the support and can sink and then take out each lamella monomer structure one by one again, and this process convenient operation easily takes out and can not harm the fabric.

The second embodiment is substantially the same as the first embodiment, and also includes a shaft portion 1, a fixed portion 2, and a pair of fixing portions 3, and the fixed portion 2 is also formed by splicing four single-piece structures, but the differences between the second embodiment and the first embodiment are as follows:

as shown in fig. 7, the following describes a specific structure of the shaft portion in the second embodiment:

in the second embodiment, the shaft portion 1 is made of nylon, and the length of the shaft portion 1 is 80 cm. The transition portion 13 is a cylindrical transition, and the diameter of the transition portion 13 is the same as that of the second portion 12. The first part 11 is of a cylinder structure; the transition portion 13 is formed at the connection position of one end of the first portion 11 and the second portion 12, and the other end of the first portion 11 is a free end.

The following describes the specific structure of the fixing part 2 in the second embodiment:

as shown in fig. 8, the shaped portion 2 further includes two non-shaped portions 22, the two non-shaped portions 22 are respectively disposed at two ends of the shaped portion 21, and the shaped portion 2 has an inner cavity extending along an axial direction thereof.

As shown in FIG. 8, the molding part 21 is a hollow cylinder with parallel coils on the surface, the height of the coils is 0.1-2 mm, the distance between the coils is 0.5-5 mm, and the length of the molding part is 5-150 cm. Preferably, in the second embodiment, the length of the molding part 21 is 55cm, the height of the coil is 0.75mm, the pitch is 3mm, and the outer diameter of the coil is 18 mm.

Each non-molding part 22 is of a hollow cylinder structure, the outer diameter of each non-molding part 22 is smaller than or equal to the outer diameter of the molding part 21, and the length of each non-molding part 21 is 5-10 cm. Preferably, in the second embodiment, the length of the non-molding part 22 is 5cm, and the diameter of the non-molding part 22 is 16.5 mm.

When the first portion 11 is a cylindrical structure, at least the inner diameter of each non-molding portion 22 is the same as the diameter of the first portion 11. In the second embodiment, the first fitting point is also located at the position 20cm to the left from the rightmost end of the first portion 11, 5cm to the right of the rightmost end of the first portion 11 is the transition portion 13, the diameter of the first portion 11 at the first fitting point is 8mm, and the total length of the first portion 11 at the left side of the first fitting point is 50 cm. According to different working conditions, the inner diameters of the non-molding part 22 and the molding part 21 can be the same as the diameter of the column structure.

The following describes the specific structure of the fixing portion 3 in the second embodiment:

the fixing part 3 is two fastening devices 3, each fastening device 3 is detachably connected with the non-molding part 22, the inner diameter of each fastening device 3 is equal to the outer diameter of the non-molding part 22, the fixing part 3 adopting the fastening device 3 can be an annular hoop, the inner diameter of the annular hoop is 16.5mm, and the annular hoop is fastened on the non-molding part 22, so that the molding part 2 cannot collapse.

According to different working conditions, the fixing part 3 can also be two tapered sleeves, each tapered sleeve is detachably connected with at least one non-molding part 22, and the inner diameter of each tapered sleeve is equal to the outer diameter of the non-molding part 22.

As shown in fig. 7, the assembly process of the second embodiment is as follows;

when in use, the first monomer structure 23, the second monomer structure 24, the third monomer structure 25 and the fourth monomer structure 26 of the shaping part 2 are spliced on the outer surface of the first part 11 in the shaft part 1 according to the numerical sequence, and the monomer structures are all positioned at one point on the left side of the first conjunction point during splicing. After the splicing is finished, the right annular hoop is sleeved at the non-molding part 22 through the second fit point, the alignment of parallel coils is guaranteed, then the left annular hoop is sleeved at the non-molding part 22 in the same mode to be aligned, at the moment, the sizing part 2 does not reach the first fit point, so that looseness exists, the left buckle and the right buckle of the annular hoop are extruded inwards to guarantee the alignment of parallel coil threads, the second part 12 is pushed leftwards, and the sizing part 2 is pushed to the first fit point to complete the whole assembly.

After the assembly, the tubular fabric with the diameter of 18mm and the length of 50cm is sleeved on the assembled second embodiment, the yarn is tightened into the wave trough of the molding part 21, and after the complete winding, the fabric can be fixed into a parallel coil shape through heat setting.

During the dismantlement, take off the winding line, take out both sides buckle, then take out axial region 1, each monomer structure of design portion 2 loses the support and can sink, then extracts out each lamella monomer structure one by one, and this process convenient operation easily takes out and can not harm the fabric.

The taper angles mentioned in the first and second embodiments of the present invention each refer to an angle between two generatrices of an axial section of a cone (a section passing through the axis of the cone).

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.