CN212261623U - 3D prints supplementary sectional type laryngotracheal support - Google Patents
3D prints supplementary sectional type laryngotracheal support Download PDFInfo
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- CN212261623U CN212261623U CN202021000290.7U CN202021000290U CN212261623U CN 212261623 U CN212261623 U CN 212261623U CN 202021000290 U CN202021000290 U CN 202021000290U CN 212261623 U CN212261623 U CN 212261623U
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Abstract
The utility model belongs to the technical field of the medical instrument technique and specifically relates to a 3D prints supplementary sectional larynx tracheal stent and preparation method thereof to alleviate the problem that traditional metal tracheal stent can't comply with the tracheal anatomy of larynx. This supplementary sectional laryngotracheal support of 3D printing includes two at least support monomers, connects through the moving mechanism between the adjacent support monomer, and the support monomer configuration is to can the activity adjust the position in order to adapt to the physiological characteristics of laryngotracheal. For traditional larynx tracheal stent, the utility model provides a larynx tracheal stent can alleviate the stimulation to tissue on every side, reduces the hyperplasia of granulation tissue, avoids the edema of throat to and avoid the aversion of self, risks such as fracture.
Description
Technical Field
The utility model belongs to the technical field of the medical instrument technique and specifically relates to a 3D prints supplementary sectional larynx tracheal scaffold.
Background
The problem of laryngotracheal stenosis can be caused by tumor compression, trauma (including iatrogenic injury) and the like near the laryngotracheal, and the tracheal stent is implanted for treatment to recover the tracheal patency of a patient who is not suitable for an operation.
However, due to individual differences, anatomical features of laryngotracheas of different patients are different, and the shape of the traditional metal tracheal stent is fixed, so that the fixed shape cannot well conform to the anatomical characteristics of the laryngotracheas.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a 3D prints supplementary sectional larynx tracheal support to alleviate the problem that traditional metal tracheal support can't comply with the tracheal anatomy of larynx characteristics.
In order to alleviate above-mentioned technical problem, the utility model provides a technical scheme lies in:
on the first hand, the utility model provides a 3D printing auxiliary sectional laryngotracheal stent,
the laryngeal-tracheal stent comprises at least two stent monomers, wherein the adjacent stent monomers are connected through a movable mechanism, and the stent monomers are configured to be capable of movably adjusting the position to adapt to the physiological characteristics of the laryngeal trachea.
Further, in the present invention,
the bracket monomer which is arranged above the laryngotracheal in the using state is taken as a first bracket monomer,
the first support single body comprises a main body part and an opening part which are connected, and the opening part is configured to be hung above a glottis in a mode that the diameter of the opening part is not smaller than that of the main body part.
Further, in the present invention,
the opening is formed in a horn shape, a cylindrical shape, or a spherical shape.
Further, in the present invention,
one of the bracket single bodies is taken as a first bracket single body, and the bracket single body adjacent to the first bracket single body is taken as a second bracket single body;
the first support single body is movably connected with the second support single body, and the movable mechanism is a first movable mechanism which is configured to have six degrees of freedom in space.
Further, in the present invention,
one of the bracket single bodies is used as a first bracket single body, the bracket single body adjacent to the first bracket single body is used as a second bracket single body, and the bracket single body adjacent to the second bracket single body is used as a third bracket single body;
a movable mechanism movably connected between the first support single body and the second support single body is taken as a first movable mechanism, and a movable mechanism movably connected between the second support single body and the third support single body is taken as a second movable mechanism;
the first and second moving mechanisms are each configured to have six degrees of freedom in space.
Further, in the present invention,
the support single bodies are arranged into a latticed cylinder structure, the end parts of the support single bodies are provided with connecting points formed by crossed grid lines, adjacent connecting points are spaced from each other, and the connecting points are configured to be connected with the movable mechanism.
Further, in the present invention,
the movable mechanism comprises a plurality of connecting elements which are distributed in an annular mode and are respectively connected with the connecting points of the adjacent support single bodies, and the connecting elements are configured to be adjustable in angle.
Further, in the present invention,
one end of the connecting element is connected with a connecting point of one bracket monomer, and the other end of the connecting element is connected with at least one connecting point of the adjacent bracket monomer.
Further, in the present invention,
the connecting element comprises a first wire body and a second wire body which are arranged in an angle and are both in a linear structure, the connected end parts of the first wire body and the second wire body are connected with a connecting point,
the end parts of the first wire body and the second wire body, which are separated from each other, are respectively connected to two connecting points at intervals of the adjacent single support bodies.
Further, in the present invention,
the material of the movable mechanism comprises PTFE.
Further, in the present invention,
the single bracket body is made of memory alloy.
Further, in the present invention,
the surfaces of the bracket monomer and the movable mechanism are coated with silicone layers.
The utility model discloses embodiment can realize following beneficial effect at least:
the utility model provides a 3D prints supplementary sectional larynx tracheal support includes two at least support monomers, and is adjacent connect through the moving mechanism between the support monomer, support monomer configuration is to can the activity adjust position in order to adapt to the tracheal physiological characteristic of larynx.
For traditional larynx tracheal stent, the utility model provides a larynx tracheal stent can alleviate the stimulation to tissue on every side, reduces the hyperplasia of granulation tissue, avoids the edema of throat to and avoid the aversion of self, risks such as fracture.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention or the related art, the drawings required to be used in the description of the embodiments or the related art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of one of the laryngotracheal stents according to the embodiment of the present invention;
fig. 2 is a schematic structural view of another laryngotracheal stent provided by the embodiment of the present invention;
fig. 3 is a schematic structural view of a movable mechanism in the laryngotracheal stent according to an embodiment of the present invention;
FIG. 4 is a laryngotracheal tube and its surrounding tissue structure atlas obtained by CT scanning of a thin layer of the chest in an embodiment of the present invention;
fig. 5 is a flowchart of a method for manufacturing a 3D printing auxiliary segmented laryngotracheal stent according to an embodiment of the present invention.
Icon: 100-a scaffold monomer; 200-a moving mechanism; 210-a connecting element; 211-a first wire body; 212-a second wire body; 101-a body portion; 102-an opening; 110-a first scaffold monomer; 120-a second scaffold monomer; 130-a third scaffold monomer; 201-a first movable mechanism; 202-a second movable mechanism; 010-a junction; 300-recycling line.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "physical quantity" in the formula, unless otherwise noted, is understood to mean a basic quantity of a basic unit of international system of units, or a derived quantity derived from a basic quantity by a mathematical operation such as multiplication, division, differentiation, or integration.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
The problem of laryngotracheal stenosis can be caused by tumor compression, trauma (including iatrogenic injury) and the like near the laryngotracheal, and the tracheal stent is implanted for treatment to recover the tracheal patency of a patient who is not suitable for an operation.
However, due to individual differences, anatomical features of laryngotracheas of different patients are different, and the shape of the traditional metal tracheal stent is fixed, so that the fixed shape cannot well conform to the anatomical characteristics of the laryngotracheas.
The embodiment provides a 3D printing auxiliary segmented laryngotracheal stent, which comprises at least two stent units 100, wherein the adjacent stent units 100 are connected through a movable mechanism 200, and the stent units 100 are configured to be capable of movably adjusting the orientation to adapt to the physiological characteristics of the laryngotrachea.
For traditional larynx tracheal stent, the utility model provides a larynx tracheal stent can alleviate the stimulation to tissue on every side, reduces the hyperplasia of granulation tissue, avoids the edema of throat to and avoid the aversion of self, risks such as fracture.
In this embodiment, the laryngotracheal stent preferably comprises two stent units 100 (this version is not shown in the drawings). One of the bracket units 100 is taken as a first bracket unit 110, and the bracket unit 100 adjacent to the first bracket unit 110 is taken as a second bracket unit 120; the first moving mechanism 201 is a moving mechanism 200 movably connected between the first stand unit 110 and the second stand unit 120, and the first moving mechanism 201 is spatially arranged to have six degrees of freedom. The first moving mechanism 201 has six degrees of freedom indicating: the first moving mechanism 201 can realize up-down, left-right, front-back displacement in space, and when the first bracket unit 110 and the second bracket unit 120 generate compliance deviation under the guiding action of the laryngotracheal physiological tissue, the first moving mechanism 201 can self-adaptively adjust along with the deviation of the first bracket unit 110 and the second bracket unit 120.
As a variation of the above embodiment, the laryngotracheal stent includes three stent units 100 (see fig. 1 and fig. 2 for details of this embodiment), one of the stent units 100 is used as a first stent unit 110, the stent unit 100 adjacent to the first stent unit 110 is used as a second stent unit 120, and the stent unit 100 adjacent to the second stent unit 120 is used as a third stent unit 130; a movable mechanism 200 movably connected between the first bracket unit 110 and the second bracket unit 120 is taken as a first movable mechanism 201, and a movable mechanism 200 movably connected between the second bracket unit 120 and the third bracket unit 130 is taken as a second movable mechanism 202; each of the first movable mechanism 201 and the second movable mechanism 202 is spatially arranged to have six degrees of freedom.
The first moving mechanism 201 has six degrees of freedom indicating: the first moving mechanism 201 can realize up-down, left-right, front-back displacement in space, and when the first bracket unit 110 and the second bracket unit 120 generate compliance deviation under the guiding action of the laryngotracheal physiological tissue, the first moving mechanism 201 can self-adaptively adjust along with the deviation of the first bracket unit 110 and the second bracket unit 120.
The second movable mechanism 202 has six degrees of freedom indicating: the second movable mechanism 202 can spatially realize the up-down, left-right, and front-back displacement, and when the second stent unit 120 and the third stent unit 130 generate the compliance deviation under the guiding action of the laryngotracheal physiological tissue, the second movable mechanism 202 can self-adaptively adjust along with the deviation of the second stent unit 120 and the third stent unit 130.
The detailed structure of the single stent 100 is discussed as follows:
the single bracket bodies 100 are arranged in a grid-like cylindrical structure, and for example, a grid may be formed by two obliquely crossing lines, the obliquely crossing lines form connection points 010 at ends of the single bracket bodies 100, the adjacent connection points 010 are spaced from each other, and the connection points 010 are arranged to be connected to the movable mechanism 200.
Furthermore, the diameters of the individual stent units 100 may be set to be different, and customized adjustment may be performed according to the physiological characteristics of different patients.
Further, in the case of a laryngotracheal stent having three stent units 100, the diameters of the respective stent units 100 are 10-20mm, 20-23mm, and 23-25mm, respectively, from top to bottom;
further, in the case of a laryngotracheal stent having three stent units 100, the diameters of the respective stent units 100 are 14mm, 22mm, and 24mm from top to bottom, respectively.
Further, in the case of a laryngotracheal stent having three stent units 100, the lengths of the respective stent units 100 are 8-15mm, 20-30mm, and 20-30mm, respectively, from top to bottom;
further, in the case of a laryngotracheal stent having three stent units 100, the lengths of the respective stent units 100 are 10mm, 25mm, and 25mm, respectively, from top to bottom.
In the alternative of this embodiment, it is preferable that the first single stent unit 110 is a single stent unit 100 that is mounted above the laryngotracheal tube in a use state, the first single stent unit 110 includes a main body portion 101 and an opening portion 102 that are connected, and the opening portion 102 is configured to be hung above the glottis in a manner that the diameter is larger than that of the main body portion 101.
The development background of the opening 102 needs to be described with emphasis:
after the tracheal stent is implanted, displacement may occur, which may cause dyspnea, obstructive pulmonary inflammation, atelectasis, and the like. Increasing the radial support force of the stent can reduce the risk of displacement, but the radial support force and the compliance of the stent are in conflict, and increasing the radial support force of the stent excessively reduces the compliance thereof, thereby increasing the irritation to the tracheal wall and causing the intolerance of the patient. These problems are currently not an effective solution.
In order to effectively solve the above problems of the existing tracheal stent, and simultaneously realize the effects of preventing displacement and conforming to the laryngotracheal, and combine the anatomical characteristics (specific shape and shape-walking direction) of the laryngotracheal, the utility model discloses develop an opening part 102, design the proximal end of the stent into a horn mouth shape, expand the edge of the stent outwards, fix it above the glottis, thereby avoid the displacement of the stent on the basis of not reducing the flexibility; meanwhile, the joint design is adopted, and the joint is matched with the anatomical characteristics of different segments of the laryngotracheal, so that certain flexibility is ensured.
Furthermore, the opening 102 is cylindrical, and the diameter of the cylindrical opening 102 is larger than that of the first bracket unit 110, so that the diameter-variable structure can be easily fixed to the surrounding tissue.
Further, the opening 102 is formed in a horn shape, and the diameter of the opening 102 gradually increases in a direction away from the distal end of the first bracket unit 110. The upper end of the bracket adopts a bell mouth design, so that the bracket is more easily fixed on surrounding tissues, and compared with a cylindrical structure, the horn-shaped structure is not only easily fixed on the surrounding tissues.
Further, the opening 102 is formed in a spherical shape, and the lateral diameter of the opening 102 is gradually increased and then gradually decreased in a direction away from the distal end of the first bracket unit 110. Similarly, the spherical opening 102 is easily fixed to the surrounding tissue, and the trumpet-shaped structure is easily fixed to the surrounding tissue, as compared with the cylindrical structure.
Further, the length of the opening portion 102 is set to 1-5mm and the diameter is set to 14-18 mm.
Further, the length of the opening portion 102 is set to 3 mm.
The shape and construction of the movable mechanism 200 will be described in detail below,
as before, the motion mechanism 200 needs to be able to achieve six degrees of freedom in direction,
preferably, the movable mechanism 200 includes a plurality of connecting elements 210 distributed in a ring shape and respectively connected to the connecting points 010 of the adjacent bracket units 100, and the connecting elements 210 are configured to be angularly adjustable.
Specifically, the method comprises the following steps:
the connection member 210 has one end connected to the connection point 010 of one bracket unit 100 and the other end connected to at least one connection point 010 of the adjacent bracket unit 100. The above-mentioned at least one connection point 010 shows that the other end of the connection member 210 can be connected to one connection point 010 or two connection points 010 with the adjacent bracket unit 100.
Regarding the structure of the connection element 210, in more detail:
the connection elements 210 may be arranged in parallel linear structures (this way is not shown in the drawing), and each connection element 210 is connected to the corresponding connection point 010 of the upper and lower bracket units 100, and the connection elements 210 are not in contact with each other and are spaced apart from each other. This way, a free movement of six degrees of freedom can be achieved.
Alternatively, the first and second electrodes may be,
the connection element 210 includes a first wire 211 and a second wire 212 (see fig. 3) arranged at an angle and each having a linear structure, wherein the connected ends of the first wire 211 and the second wire 212 are connected to a connection point 010, and the separated ends of the first wire 211 and the second wire 212 are respectively connected to two connection points 010 spaced apart from each other of the adjacent single stent 100. As shown in fig. 3, the top ends of the first wire body 211 and the second wire body 212 are fixed to the same connection point 010, and the lower end of the first wire body 211 of one connection element 210 is connected to the lower end of the second wire body 212 of the adjacent connection element 210, or the lower end of the first wire body 211 of one connection element 210 is connected to the second wire body 212 of the adjacent connection element 210.
In an alternative embodiment, the material of the movable mechanism 200 preferably includes PTFE (polytetrafluoroethylene).
In the alternative of this embodiment, it is preferable that the single stent 100 is made of a memory alloy.
In the alternative of the present embodiment, it is preferable that the surfaces of the holder unit 100 and the movable mechanism 200 are coated with a silicone layer (film). The silicone layer may prevent tumor or hyperplastic tissue ingrowth.
In the alternative of this embodiment, it is preferable that the laryngotracheal stent is further provided with a recovery wire 300, and the recovery wire 300 can be connected to one of the stent units 100 of the laryngotracheal stent, preferably to the stent unit 100 close to the glottis, and more preferably to the opening 102 of the stent unit 100 close to the glottis, so that the recovery wire can be conveniently taken out and recovered. More preferably, the recovery thread 300 is provided in a thread-like structure, and is connected to the stent unit 100 in a winding manner.
Example two
The embodiment provides a method for preparing a 3D printing auxiliary segmented laryngotracheal stent, please refer to fig. 5, which includes the following steps:
s1: acquiring original data of a laryngotracheal tube and surrounding tissue structures of the laryngotracheal tube;
s2: reconstructing three-dimensional model data of the laryngotracheal tube and the surrounding tissue structure, and importing the reconstructed data into an output device;
s3: and the output device prints out the three-dimensional solid model of the laryngotracheal tube according to the reconstruction data.
S4: and manufacturing a 3D printing auxiliary sectional laryngotracheal stent according to the three-dimensional solid model of the laryngotracheal.
The step of obtaining the data of the laryngotracheal tube and the tissue structure around the laryngotracheal tube in step S1 includes:
thin layers of the neck and chest are CT scanned to obtain raw data of the laryngo airways and surrounding tissue structures.
The step of reconstructing three-dimensional model data of the laryngotracheal tube and the surrounding tissue structure in step S2 and importing the reconstructed data into an output device includes:
the CT three-dimensional reconstruction technology carries out three-dimensional reconstruction on the laryngotracheae and surrounding structures to obtain three-dimensional reconstruction data, and the reconstruction data are led into a 3D printer;
the step of printing out the three-dimensional solid model according to the reconstruction data by the output device in the step S3 includes:
and the 3D printer prints out the three-dimensional solid model of the laryngotracheal tube according to the reconstruction data.
The specific implementation scenario is as follows:
firstly, scanning neck and chest thin layers through CT to obtain original data (an acquisition result is shown in figure 4) of the laryngotracheal and surrounding tissue structures, then carrying out three-dimensional reconstruction on the laryngotracheal and surrounding structures through a CT three-dimensional reconstruction technology to obtain three-dimensional reconstruction data, importing the reconstruction data into a 3D printer, finally printing a three-dimensional solid model of the laryngotracheal according to the reconstruction data through the 3D printer, and manufacturing a laryngotracheal bracket according to the model in a personalized mode.
The significance of preparing the 3D printing auxiliary sectional laryngotracheal stent by the method is as follows: due to individual differences, the anatomical features of the laryngotracheas of different patients are different, and the fixed shape of the traditional metal tracheal stent cannot well conform to the anatomical features of the laryngotracheas of different individuals. The preparation method comprises the steps of firstly collecting anatomical features of the laryngotracheas (original data of the laryngotracheas and surrounding tissue structures) of a specific individual, reconstructing a three-dimensional model according to the anatomical features of the laryngotracheas, then outputting the three-dimensional model of the laryngotracheas by adopting a 3D printing method, and finally manufacturing the laryngotracheal stent according to the three-dimensional model of the laryngotracheas. The method can realize customization and better conform to the anatomical characteristics of different patients.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (13)
1. A3D printing auxiliary sectional laryngotracheal stent is characterized in that,
the laryngeal-tracheal stent comprises at least two stent monomers, wherein the adjacent stent monomers are connected through a movable mechanism, and the stent monomers are configured to be capable of movably adjusting the position to adapt to the physiological characteristics of the laryngeal trachea.
2. The 3D printing assisted segmented laryngotracheal stent of claim 1,
the bracket monomer which is arranged above the laryngotracheal in the using state is taken as a first bracket monomer,
the first support single body comprises a main body part and an opening part which are connected, and the opening part is configured to be hung above a glottis in a mode that the diameter of the opening part is not smaller than that of the main body part.
3. The 3D printing assisted segmented laryngotracheal stent of claim 2,
the opening is formed in a horn shape, a cylindrical shape, or a spherical shape.
4. The 3D printing assisted segmented laryngotracheal stent of claim 1,
one of the bracket single bodies is taken as a first bracket single body, and the bracket single body adjacent to the first bracket single body is taken as a second bracket single body;
the first support single body is movably connected with the second support single body, and the movable mechanism is a first movable mechanism which is configured to have six degrees of freedom in space.
5. The 3D printing assisted segmented laryngotracheal stent of claim 1,
one of the bracket single bodies is used as a first bracket single body, the bracket single body adjacent to the first bracket single body is used as a second bracket single body, and the bracket single body adjacent to the second bracket single body is used as a third bracket single body;
a movable mechanism movably connected between the first support single body and the second support single body is taken as a first movable mechanism, and a movable mechanism movably connected between the second support single body and the third support single body is taken as a second movable mechanism;
the first and second moving mechanisms are each configured to have six degrees of freedom in space.
6. The 3D printing assisted segmented laryngotracheal stent of claim 1,
the support single bodies are arranged into a latticed cylinder structure, the end parts of the support single bodies are provided with connecting points formed by crossed grid lines, adjacent connecting points are spaced from each other, and the connecting points are configured to be connected with the movable mechanism.
7. The 3D printing assisted segmented laryngotracheal stent of claim 6,
the movable mechanism comprises a plurality of connecting elements which are distributed in an annular mode and are respectively connected with the connecting points of the adjacent support single bodies, and the connecting elements are configured to be adjustable in angle.
8. The 3D printing assisted segmented laryngotracheal stent of claim 7,
one end of the connecting element is connected with a connecting point of one bracket monomer, and the other end of the connecting element is connected with at least one connecting point of the adjacent bracket monomer.
9. The 3D printing assisted segmented laryngotracheal stent of claim 8,
the connecting element comprises a first wire body and a second wire body which are arranged in an angle and are both in a linear structure, the connected end parts of the first wire body and the second wire body are connected with a connecting point,
the end parts of the first wire body and the second wire body, which are separated from each other, are respectively connected to two connecting points at intervals of the adjacent single support bodies.
10. The 3D printing assisted segmented laryngotracheal stent of any one of claims 1-9,
the support monomer is connected with a recovery line.
11. The 3D printing assisted segmented laryngotracheal stent of any one of claims 1-9,
the material of the movable mechanism comprises PTFE.
12. The 3D printing assisted segmented laryngotracheal stent of any one of claims 1-9,
the single bracket body is made of memory alloy.
13. The 3D printing assisted segmented laryngotracheal stent of any one of claims 1-9,
the surfaces of the bracket monomer and the movable mechanism are coated with silicone layers.
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| CN202021000290.7U CN212261623U (en) | 2020-06-03 | 2020-06-03 | 3D prints supplementary sectional type laryngotracheal support |
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