CN115568989A

CN115568989A - Developing support

Info

Publication number: CN115568989A
Application number: CN202211302571.1A
Authority: CN
Inventors: 崔亚飞; 王格; 叶嘉铭; 赵舒畅; 李思佳
Original assignee: Shanghai Li Kai Technology Co ltd
Current assignee: Shanghai Li Kai Technology Co ltd
Priority date: 2022-10-24
Filing date: 2022-10-24
Publication date: 2023-01-06

Abstract

The application relates to a developing holder including: the support main part, the support main part includes middle part annular bearing structure and connects the tip annular bearing structure at its both ends, middle part annular bearing structure is connected in order by a set of first branch head and the tail and is constituteed, tip annular bearing structure is connected in order by a set of second branch head and the tail and is constituteed, middle part annular bearing structure's axial length is greater than tip annular bearing structure's axial length, the girth of the two equals, two middle part annular bearing structure are along its axial connection, constitute the development section, it has a plurality of tie points and a plurality of middle part development installation department of connecting the two to have between it, tie point and the adjacent setting of middle part development installation department in the circumference of support main part between two middle part annular bearing structure, the development section is a plurality of, the middle part development installation department of adjacent development section is at the axial dislocation set of support main part, be provided with first development main part on the development installation department of middle part, tip annular bearing structure is connected to the both ends of a plurality of development sections.

Description

Developing support

Technical Field

The application relates to the technical field of medical equipment, in particular to a developing support.

Background

The treatment of cerebral vascular hemorrhage generally selects to use a dense mesh stent to reconstruct blood flow guide or an auxiliary stent to assist the spring ring embolization treatment, and the common operation strategy is to establish a passage, then convey devices such as the stent or the spring ring to a lesion part, push out the stent or the spring ring, block the lesion vascular aneurysm and complete the operation.

The auxiliary support is used for assisting in the spring coil embolism treatment, the support is mainly used for treating intracranial vascular stenosis, the requirement on the support is high, the support needs to have sufficient compliance and good adherence performance, and the support needs to be visible under X-rays, so that an operator can conveniently judge the opening state of the support.

However, in the prior art, after the stent is released in place, the developing structure on the stent is not beneficial for medical staff to judge whether the blood vessel is restenosis within the immediate operation and short period after the operation, so that a contrast method is needed, and after further observation, whether the blood vessel is restenosis can be confirmed to take further measures.

In summary, in the prior art, the judgment method for whether the blood vessel is stenosed again after the stent is released is complicated, and the efficiency in the treatment link is affected.

Disclosure of Invention

In view of the above, the present application proposes a developing holder including a holder main body; the bracket main body comprises a middle annular supporting structure and end annular supporting structures connected to two ends of the middle annular supporting structure; the middle annular supporting structure is an annular structure formed by sequentially connecting a group of first supporting rods end to end; the axial length of the middle annular supporting structure is greater than that of the end annular supporting structures, and the circumferences of the middle annular supporting structure and the end annular supporting structures are equal; each two middle annular supporting structures are connected along the axial direction of the middle annular supporting structures to form a developing section, a plurality of connecting points for connecting the two middle annular supporting structures and a plurality of middle developing installation parts are arranged between the two middle annular supporting structures, and the connecting points between the two middle annular supporting structures and the middle developing installation parts are adjacently arranged in the circumferential direction of the support main body; the number of the developing sections is multiple, and the middle developing installation parts on the adjacent developing sections are arranged in the axial direction of the bracket main body in a staggered manner; the middle developing installation part is provided with a first developing main body; the end part annular supporting structure is an annular structure formed by sequentially connecting a group of second supporting rods end to end; the end ring support structure is connected to both ends of the plurality of developing stations.

In one possible implementation, the middle developing mounting portions are uniformly arranged in the axial direction of the middle annular supporting structure.

In one possible implementation manner, lines formed by connecting the most adjacent middle developing mounting parts on the adjacent developing sections in the same direction form a spiral line on the stent main body, and the spiral angle of the spiral line is 20-45 degrees.

In a possible implementation manner, the end portion annular supporting structures are connected to intersection points of the first supporting rods in an end-to-end manner, the number of the end portion annular supporting structures at one end of the middle portion annular supporting structure is two, the two adjacent end portion annular supporting structures are connected to form a closed loop structure, and at least one end of the middle portion annular supporting structure is provided with the closed loop structure.

In a possible implementation mode, the end annular supporting structure is far away from one end of the middle annular supporting structure is provided with an end developing installation part, the number of the end developing installation parts is 2-4, the circumferential direction of the support main body is uniformly distributed, and the end developing installation part is provided with a second developing main body.

In one possible implementation, the middle developing installation part is of a straight rod-shaped structure, and the middle developing installation part is arranged in parallel with the axial direction of the support main body.

In a possible implementation manner, one end of the middle developing installation part is a fixed end and is connected to the middle annular supporting structure on one side of the developing section, and the other end of the middle developing installation part is a free end and is not in contact with the middle annular supporting structure on the other side; the middle developing installation parts which are arranged alternately on the same developing section are fixed to the middle annular supporting structure on the same side; or it is same on the development section, set up alternately the middle part is developed the installation department and is fixed to being located the heterolateral on the middle part annular bearing structure, it is same to develop the main part the axial dislocation set of development section.

In a possible implementation, the stiff end of middle part development installation department is fixed extremely the adjacent opposite side of middle part annular bearing structure one side of middle part annular bearing structure, just the middle part development installation department is connected to the nodical position of first bracing piece end to end.

In a possible implementation manner, the first supporting rod is of a straight rod structure, and the straight length of the first supporting rod is 1mm-3mm; the included angle of two adjacent first supporting rods in the same group is within [ 40-100 ° ]; the axial length of the first developing main body along the support main body is 0.4mm-0.8mm, and the included angle of two adjacent second supporting rods in the same group is within [35 degrees, 90 degrees ].

In one possible implementation, the connection position of the middle annular support structure and the end annular support structure forms an open loop structure; wherein the number ratio of the group of the first supporting rods to the group of the second supporting rods is 2: 3; the number of the middle developing installation parts on the developing section is 2-4; the visualization body is a radiopaque spring ring or metal ring.

In one possible implementation manner, two ends of the bracket main body are provided with flaring structures; the end part annular supporting structure is arranged at one end of the middle part annular supporting structure and extends outwards in the circumferential direction, a preset included angle is formed between the end part annular supporting structure and the middle part annular supporting structure, and the preset included angle is in [30 degrees ] and [ 60 degrees ].

The beneficial effect of this application: through between two middle part annular bearing structures, the installation is except that the middle part of necessary tie point develops the installation department, and set up first development main part on it, and the axial dislocation setting of middle part development installation department along the support main part on the adjacent development section, on guaranteeing that the tie point makes its whole basis that has enough structural strength, after the support release targets in place, adopt corresponding development observation equipment, so that this support main part can be at the intravascular observation effect that basically realizes whole body development, whole development is clear when carrying this support, open the commentaries on classics attitude condition etc. to medical staff positioning support position and judgement support and have better additional action. Moreover, compared with the stent structure with fewer developing points in the prior art, the stent structure is easier for medical personnel to intuitively judge whether restenosis occurs in the blood vessel immediately after the operation and in a short period after the operation. That is to say, using the developing support of the present application, in the post-operation examination, only through the non-contact observation mode, can accomplish the follow-up work of the blood vessel restenosis, reduce the complicated, redundant judgement steps, for example, adopt the mode of CT scanning the relevant position, the medical staff can pass the CT picture that different times shoot, whether the position of more developing points on it changes (for example, the interval of the support of a plurality of developing points becomes narrow, etc.), thus is favorable to judging whether the condition of the blood vessel restenosis takes place in a short time, compared with the previous support with less developing points, need not to adopt the contact observation means, avoided the contact operation, thus avoid the injury that the operation causes the human body, the contact observation means, for example, the contrast observation, need to puncture the relevant position of the human body at first, just can pass through the contrast medium, judge whether the blood vessel restenosis condition.

Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the application and, together with the description, serve to explain the principles of the application.

Fig. 1 shows a plan development view of a developing holder of an embodiment of the present application;

fig. 2 is a plan development view showing a developing holder according to another embodiment of the present application;

FIG. 3 illustrates a side view schematic of a developer support with flare structure according to an embodiment of the present application;

FIG. 4 shows a side view of a developer support of an embodiment of the present application;

FIG. 5 illustrates a partial enlarged view of the development stage of an embodiment of the present application.

Detailed Description

Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

It will be understood, however, that the terms "central," "longitudinal," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present application or for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present application. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present application.

Fig. 1 shows a plan development view of a developing holder of an embodiment of the present application; fig. 2 is a plan development view showing a developing holder according to another embodiment of the present application; FIG. 3 illustrates a side view schematic of a developer support with flare structure according to an embodiment of the present application; FIG. 4 shows a side view of a developer support of an embodiment of the present application; FIG. 5 illustrates a partial enlarged view of the development stage of an embodiment of the present application.

As shown in fig. 1 to 5, the developing holder includes: support main part 1, support main part 1 includes middle part annular bearing structure 110 and connects the tip annular bearing structure 120 at its both ends, middle part annular bearing structure 110 is connected in order end to end for a set of first branch 111, the annular structure of constituteing, the axial length of middle part annular bearing structure 110 is greater than the axial length of tip annular bearing structure 120, and the girth of the two equals, per two middle part annular bearing structure 110 is connected along its axial, constitute development section 10, have a plurality of tie points and a plurality of middle part development installation department 112 of connecting the two between two middle part annular bearing structure 110, tie point and middle part development installation department 112 are adjacent in the circumference of support main part 1 set up, the quantity of development section 10 is a plurality of, middle part development installation department 112 on the adjacent development section 10 is at the axial dislocation set of support main part 1, be provided with first development main part 11 on the middle part development installation department 112, tip annular bearing structure 120 is connected in order end to end for a set of second branch 121, the annular structure of constitution, tip annular bearing structure 120 is connected to the both ends of a plurality of development section 10.

In this embodiment, through between two middle ring-shaped supporting structures 110, install the middle part development installation department 112 except necessary tie point, and set up first development main part 11 on it, and the middle part development installation department 112 on the adjacent development section 10 along the axial dislocation set of support main part 1, on the basis that the tie point makes its whole have sufficient structural strength, after the support release targets in place, adopt corresponding development observation equipment, so that this support main part 1 can basically realize the observation effect of whole body development in the blood vessel, whole development is clear when carrying this support, to medical personnel location support position and judge that the support is opened and is changeed the attitude condition etc. and have better auxiliary action.

Moreover, compared with the stent structure with fewer developing points in the prior art, the stent structure is easier for medical personnel to intuitively judge whether restenosis occurs in the blood vessel immediately after the operation and in a short period after the operation. That is to say, with the developing support of the present application, in the post-operation examination, the follow-up work of the blood vessel restenosis can be completed only by a non-contact observation mode, and the complicated and redundant determination steps are reduced, for example, by adopting a mode of CT scanning the relevant parts, medical staff can determine whether the positions of more developing points on the CT images are changed (such as the space between the supports of a plurality of developing points is narrowed) through the CT images shot at different times, so that the condition of the blood vessel restenosis in a short time can be determined.

In one embodiment, the middle developer mounts 112 are preferably uniformly arranged in the axial direction of the middle ring support 110.

In one embodiment, the lines connecting the most adjacent middle developing mounting portions 112 of the adjacent developing sections 10 in the same direction form a spiral line on the holder body 1, and the spiral line has a lead angle of 20 ° to 45 °.

In this embodiment, when the first developing bodies 11 are arranged densely, the whole developing body is a double helix or multi-helix structure when viewed by the developing device, specifically, the number of the first developing bodies 11 uniformly arranged in the circumferential direction of each developing section 10 is determined, and when two first developing bodies 11 are provided thereon, the whole developing body is a DNA-like double helix structure, and because the first developing bodies 11 on adjacent developing sections 10 are arranged densely, the interval between the undeveloped portions is small, and the double helix structure with multi-stage gaps therebetween can be clearly identified from the developing image. Further, there are up to four coaxial helical structures on the development station 10.

Therefore, it is preferable that the most adjacent middle developing mounting portions 112 of the adjacent developing stations 10 are connected in the same direction to form a spiral having a lead angle of 20 ° to 45 °. The bracket main body 1 formed by the helix angle within the range of 20 degrees to 45 degrees can ensure that the developing points are arranged densely, and the bracket has a proper length besides being observed more intuitively and clearly from the figure, thereby avoiding the situations that more developing points are arranged on a single product, the material is wasted, and the cost is increased without reason.

In one embodiment, the end annular support structures 120 are connected to the first support rods 111 at the intersection point of the end-to-end connection, the number of the end annular support structures 120 is two at one end of the middle annular support structure 110, two adjacent end annular support structures 120 are connected to form a closed loop structure 140, and at least one end of the middle annular support structure 110 is provided with the closed loop structure 140.

In one embodiment, the end of the end annular supporting structure 120 far from the middle annular supporting structure 110 is provided with end developing installation parts 122, the number of the end developing installation parts 122 is 2-4, the end developing installation parts 122 are uniformly arranged in the circumferential direction of the bracket body 1, and the end developing installation parts 122 are provided with the second developing bodies 12.

As shown in fig. 1, in one embodiment, the middle developing mount 112 is a straight rod-shaped structure, and the middle developing mount 112 and the holder main body 1 are arranged in parallel with each other in the axial direction.

In this embodiment, the middle developing mounting portion 112 is a solid straight rod structure, and may be a solid rod structure, and the developing main body is sleeved and fixed on the middle developing mounting portion 112. The middle developing mount 112 is parallel to the axial direction of the holder main body 1 so that the operator can observe the maximum developing area from the outside of the body.

In one embodiment, the middle developing installation part 112 may be a hollow rod-shaped structure with a groove and a hollow groove inside, and after the developing main body is sleeved and fixed on the middle developing installation part 112, the developing main body may be further pressed into the groove of the middle developing installation part 112 through processing, so as to increase the contact area between the developing main body 500 and the middle developing installation part 112, thereby improving the connection strength therebetween.

As shown in fig. 2, in one embodiment, the end developing mount 12 may be a hollow rod-shaped structure with a groove or a hollow groove formed therein.

In one embodiment, the developing body is a coil or ring of radiopaque material that may be laser welded or glued to the middle developer mounting portion 112 after it is secured to the middle developer mounting portion 112.

In one embodiment, one end of the middle developing installation part 112 is a fixed end, and is connected to the middle annular supporting structure 110 on one side of the developing section 10, and the other end is a free end, and is not contacted with the middle annular supporting structure 110 on the other side, wherein, on the same developing section 10, the middle developing installation parts 112 alternately arranged are fixed to the middle annular supporting structure 110 on the same side, or on the same developing section 10, the middle developing installation parts 112 alternately arranged are fixed to the middle annular supporting structure 110 on the different side, and the developing bodies are axially staggered in the same developing section 10.

In this embodiment, one end of the middle developing mounting portion 112 is a fixed end and is connected to the middle annular supporting structure 110 on one side, and the other end is a free end, and the middle developing mounting portion 112 is not in contact with the middle annular supporting structure 110 on the other side, so that a worker in the art can fix the developing main body on the middle developing mounting portion 112 during processing.

The intermediate development mounting portions 112 referred to herein disposed at intervals are: a tie point setting of looks interval between two middle part development installation departments 112, this two middle part development installation departments 112 can be fixed to the middle part annular bearing structure 110 that is located same side, also can be located the middle part annular bearing structure 110 of different sides, compare in the middle part development installation department 112 of fixing to the homonymy, the development area that can observe obtains promoting to the inside condition of the more clear observation patient of the person of working in the art of being convenient for.

In one embodiment, the two first support bars 111 of the developing station 10, on which the middle developing mount 112 is disposed, have a length smaller than that of the two first support bars 111 intersecting to form a connection point, thereby providing a larger space for the middle developing mount 112 having a bar shape and providing a more sufficient mounting space for a practitioner in the art to mount a developing body.

In this embodiment, further, the lengths of the first struts 111 at different positions are different, and specifically include long rod 1111, middle rod 1112 and short rod 1113; long rod 1111 is the longest length of first rod 111 at the connection point of two adjacent middle annular support structures 110 on the same developing section 10, the straight length of long rod 1111 is between 1mm and 3mm, short rod 1113 is the first rod 111 at the end-to-end connection point provided with middle developing installation part 112, the straight length of short rod 1113 is between 1mm and 1.5mm, middle rod 1112 is the first rod 111 at the opposite side of middle developing installation part 112, the straight length of middle rod 1112 is between 1mm and 2mm, and the length of long rod 1111 is always greater than that of middle rod 1112 and that of middle rod 1112 is always greater than that of short rod 1113.

Further, the linear length for the middle developing mount 112 is preferably 0.4mm.

In one embodiment, the fixed end of the middle developing mount 112 is fixed to one side of the middle ring-shaped support structure 110 adjacent to the other side of the middle ring-shaped support structure 110, and the middle developing mount 112 is connected to the intersection point position where the first rods 111 are connected end to end.

In this embodiment, the connection points referred to in this application are the intersection point of the first strut 111 end to end, the intersection point of the first strut 111 and the second strut 121 end to end, and the intersection point of the second strut 121 end to end.

In one embodiment, the first rod 111 is a straight rod structure, the straight length of the first rod 111 is 1mm to 3mm, the included angle between two adjacent first rods 111 in the same group is within [40 ° to 100 ° ], the axial length of the first developing body 11 along the rack body 1 is 0.4mm to 0.8mm, and the included angle between two adjacent second rods 121 in the same group is within [35 ° to 90 ° ].

In this embodiment, the included angle between two adjacent first struts 111 in the same group and the included angle between two adjacent second struts 121 in the same group are mainly for adapting to blood vessels with different thicknesses, and under the condition of ensuring that the circumferential lengths are equal, the smaller the included angle between two adjacent first struts 111 connected end to end is, the smaller the stent diameter is, the larger the included angle between the adjacent struts is, and the larger the stent diameter is. The same applies to the adjacent end-to-end second struts 121, and the diameter of the stent can be achieved by expanding and heat setting after the same tube is cut, and the prior art can be directly used, so that the detailed description is omitted herein.

In one embodiment, the connection of central annular support structure 110 to end annular support structure 120 forms an open loop structure 130, wherein the number of first struts 111 to second struts 121 is 2:3, the number of central developer mounts 112 on developer section 10 is 2 to 4, and the developer body is a radiopaque coil or ring.

In this embodiment, the number of the first struts 111 and the number of the second struts 121 is 2:3, i.e. every fourth first strut 111, end to end, corresponding to six second struts 121, end to end.

Preferably, the 4 developing main bodies are uniformly distributed in the circumferential direction of the developing section 102, that is, the included angle between the adjacent two developing main bodies and the axis connecting line of the bracket main body 1 is 90 °.

Preferably, the number of the first struts 111 is 16, the number of the second struts 121 is 24, and the stent body 1 formed by the numbers is reasonable in structural strength on the premise that the number of struts on the stent body 1 is appropriate and the stent body can adapt to the inner diameter of most blood vessels.

More specifically, the number of the group of first struts 111 is 16, the number of the group of second struts 121 is 24, and only four connection points are provided between the first annular support structure and the second annular support structure 20, compared with a conventional arrangement mode in which the first struts 111 and the second struts 121 are arranged at equal lengths and all the connection points are in one-to-one correspondence, the compliance and adherence of the middle open-loop blood vessel stent of the present application are sufficiently improved while good support performance in the radial direction is ensured.

It is also specifically emphasized that the open loop structure 130 referred to in this application is: after the middle annular support structure 110 and the end annular support structures 120 are axially connected, only a part of the points where the two are connected end to end are connected with each other, and the other parts of the points are not connected with the whole structure of the adjacent annular support structures. The closed loop structure 140 referred to in this application is: after two adjacent end annular support structures 120 are axially connected, the intersection points between the two end annular support structures 120 completely correspond to each other, and are connected to each other.

In one embodiment, the stent body 1 has flared structures 150 at both ends, wherein the end annular support structures 120 are outwardly circumferentially expanded at one end of the middle annular support structure 110, and the end annular support structures 120 and the middle annular support structure 110 form a predetermined angle α within [30 °,60 ° ].

In this embodiment, the flaring structure 150 is configured such that when the stent is in a compressed state before the stent is released, the flaring structure 150 extends into the introducer sheath in a parallel manner, so that the flaring structure 150 is more beneficial for the end annular support structures 120 at the two ends of the stent body 1 to be anchored on the inner wall of the blood vessel more stably and firmly after the stent body 1 is released.

Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or improvements to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A developing holder is characterized by comprising a holder main body;

the bracket main body comprises a middle annular supporting structure and end annular supporting structures connected to two ends of the middle annular supporting structure;

the middle annular supporting structure is an annular structure formed by sequentially connecting a group of first supporting rods end to end;

the end part annular supporting structure is an annular structure formed by sequentially connecting a group of second supporting rods end to end;

the axial length of the middle annular supporting structure is greater than that of the end annular supporting structures, and the circumferences of the middle annular supporting structure and the end annular supporting structures are equal;

each two middle annular supporting structures are connected along the axial direction of the middle annular supporting structures to form a developing section, a plurality of connecting points for connecting the two middle annular supporting structures and a plurality of middle developing installation parts are arranged between the two middle annular supporting structures, and the connecting points between the two middle annular supporting structures and the middle developing installation parts are adjacently arranged in the circumferential direction of the support main body;

the number of the developing sections is multiple, and the middle developing installation parts on the adjacent developing sections are arranged in the axial direction of the bracket main body in a staggered manner;

the middle developing installation part is provided with a first developing main body;

the end ring support structure is connected to both ends of the plurality of developing stations.

2. The developer support of claim 1, wherein the middle developer mounts are uniformly arranged in an axial direction of the middle annular support structure.

3. The developer carrier according to claim 2, wherein lines connecting adjacent ones of said intermediate developer mounting portions on adjacent ones of said developer sections in the same direction form a helical line on said carrier body, said helical line having a helix angle of 20 ° to 45 °.

4. The developing holder according to claim 1, wherein the end annular support structures are connected to the first support rod at intersection points end to end, the number of the end annular support structures is two at one end of the middle annular support structure, two adjacent end annular support structures are connected to form a closed loop structure, and at least one end of the middle annular support structure has the closed loop structure.

5. The developing support according to claim 1, wherein an end portion developing mounting portion is provided at an end of the end portion annular supporting structure away from the middle portion annular supporting structure, the number of the end portion developing mounting portions is 2-4, the end portion developing mounting portions are uniformly arranged in the circumferential direction of the support main body, and a second developing main body is provided on the end portion developing mounting portion.

6. The developing holder according to any one of claims 1 to 5, wherein the middle developing mount portion is of a straight rod-like structure, and the middle developing mount portion and the holder main body are arranged in parallel with each other in the axial direction.

7. The developing holder according to any one of claims 1 to 5, wherein the middle developing mount has one end which is a fixed end and is attached to the middle ring-shaped supporting structure on one side of the developing section and the other end which is a free end and is not in contact with the middle ring-shaped supporting structure on the other side;

the middle developing installation parts which are arranged alternately on the same developing section are fixed to the middle annular supporting structure on the same side; or it is same on the development section, alternately set up the middle part is developed the installation department and is fixed to being located the heterolateral on the middle part annular bearing structure, it is same to develop the main part the axial dislocation set of development section.

8. The developing support according to claim 7, wherein the fixed end of the middle developing installation part is fixed to the other side of the middle annular supporting structure adjacent to the other side of the middle annular supporting structure, and the middle developing installation part is connected to the intersection point position of the first supporting rod in the end-to-end manner.

9. The developing holder according to any one of claims 1 to 5, wherein the first supporting rod has a straight rod structure, and the straight length of the first supporting rod is 1mm to 3mm;

the included angle between two adjacent first supporting rods in the same group is within [ 40-100 ° ];

the first developing body has an axial length of 0.4mm to 0.8mm along the holder body,

the included angle of two adjacent second supporting rods in the same group is within [35 degrees and 90 degrees ];

two ends of the bracket main body are provided with flaring structures;

the end part annular supporting structure is arranged at one end of the middle part annular supporting structure and extends outwards in the circumferential direction, a preset included angle is formed between the end part annular supporting structure and the middle part annular supporting structure, and the preset included angle is in [30 degrees ] and [ 60 degrees ].

10. Developing support according to any of claims 1 to 5, characterized in that the connection position of the central annular support structure and the end annular support structures forms an open loop structure;

wherein the number ratio of the group of the first supporting rods to the group of the second supporting rods is 2: 3;

the number of the middle developing installation parts on the developing section is 2-4;

the visualization body is a radiopaque spring ring or metal ring.