CN217592928U - Lamellar body helical structure reaches multidirectional accent curved pipe including it - Google Patents
Lamellar body helical structure reaches multidirectional accent curved pipe including it Download PDFInfo
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- CN217592928U CN217592928U CN202220392312.1U CN202220392312U CN217592928U CN 217592928 U CN217592928 U CN 217592928U CN 202220392312 U CN202220392312 U CN 202220392312U CN 217592928 U CN217592928 U CN 217592928U
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Abstract
The utility model provides a lamellar spiral structure and a multidirectional bending guide pipe comprising the same, wherein the lamellar spiral structure comprises a pipe body and a lamellar layer; the pipe body is a bendable pipe body, and the sheet body layer is wound on the outer side of the pipe body along the spiral line direction to form a spiral structure. The utility model discloses its helical structure who sets up outside the body is similar to the spring, has increased the elasticity of body, is favorable to transferring the recovering and the control of bending, takes place its condition that is difficult to recover after the bending of pipe appears as transferring the reducible pipe section of bend pipe.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, concretely relates to slice body helical structure reaches multidirectional accent curved pipe including it.
Background
The minimally invasive surgery through the catheter has less trauma to a patient, is beneficial to the rehabilitation of the body of the patient, has small wounds, is not easy to form scars, and is frequently used for conveying devices in operations such as cardiac ablation operations, heart valve repair operations and the like which require the catheter to convey.
However, the conventional bendable catheter can be bent, but its elasticity is insufficient, and the catheter is difficult to be restored after bending. For this reason, it is necessary to improve it to avoid the above-described occurrence.
SUMMERY OF THE UTILITY MODEL
To the not enough among the prior art, the utility model aims to provide a slice helical structure reaches multidirectional accent curved pipe including it.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a lamellar spiral structure, which comprises a pipe body and a lamellar layer;
the pipe body is a bendable pipe body, and the sheet body layer is wound on the outer side of the pipe body along the spiral line direction to form a spiral structure.
Preferably, the sheet body layer comprises a plurality of sheet bodies, and the plurality of sheet bodies are formed by winding the plurality of sheet bodies on the outer side of the pipe body in sequence.
Preferably, the sheet layer consists of a sheet of one material or a sheet of a different material.
Preferably, the arrangement modes of the plurality of sheet bodies comprise composite arrangement, parallel arrangement and semi-composite arrangement; preferably, the material of the sheet body is medical plastic, and the molecular orientation of the sheet body is the same as the direction of the spiral structure;
the medical plastic is any one of polyvinyl chloride, polyethylene, polypropylene, polystyrene and K resin, acrylonitrile-butadiene-styrene copolymer, polycarbonate and polytetrafluoroethylene.
Preferably, the thickness of the tablet is 0.1mm to 0.5mm.
The utility model also provides a multidirectional pipe of turning, including aforementioned lamellar body helical structure.
Preferably, the pull ring further comprises a pull ring disposed on the lamellar helix, the pull ring comprising a first pull ring disposed at a distal end of the lamellar helix for securing the first pull wire and bending the lamellar helix by tightening or loosening the first pull wire.
Preferably, the pull ring further comprises a second pull ring disposed at a middle portion of the lamellar spiral structure, for fixing the second pull wire and bending the lamellar spiral structure by tightening or loosening the second pull wire;
and a pull wire groove for the first pull wire to pass through is also formed in the second pull ring.
Preferably, the multidirectional bending adjusting catheter further comprises a conveying pipe, a pull wire and an operating handle arranged at the proximal ends of the conveying pipe and the pull wire;
the far end of the conveying pipe is connected with the near end of the sheet spiral structure, and the near end of the conveying pipe is connected with the operating handle;
the pull wire comprises a first pull wire or a first pull wire and a second pull wire;
the operating handle is fixedly connected with the near ends of the first pull wire and the second pull wire respectively, and the first pull wire and the second pull wire are driven to be tensioned and loosened through the operating handle.
Preferably, a pull wire cavity for the first pull wire and the second pull wire to pass through is arranged on the outer side of the conveying pipe;
the far end of the conveying pipe is also provided with a third pull ring, the pull wire further comprises a third pull wire, the third pull ring is used for fixing the third pull wire, and the outer side of the conveying pipe is provided with a pull wire cavity used for penetrating through the third pull wire;
a pull wire groove for the first pull wire and the second pull wire to pass through is formed in the third pull ring;
the positions of the first stay wire, the second stay wire and the third stay wire on the conveying pipe and the sheet body spiral structure are not overlapped.
Preferably, the outer tube is arranged on the outer side of the conveying tube and the sheet spiral structure, so that each pull ring, each pull wire and each pull wire cavity are positioned on the inner side of the outer tube.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) The utility model discloses a lamellar body helical structure utilizes the combination setting of a plurality of lamellar bodies, makes its structure that is similar to a plurality of spring overlap formation to increased the elasticity of body, be favorable to transferring the recovering and the control of bending, with its reducible condition emergence that is difficult to recover after appearing the pipe bending of bend section of pipe as transferring the bend pipe.
(2) Based on the utility model discloses lamellar body helical structure's multidirectional accent curved pipe through further acting as go-between and the pull ring that sets up on lamellar body helical structure, can realize that lamellar body helical structure's multidirectional accent is curved for the operation degree of difficulty through the minimal access surgery of pipe reduces by a wide margin.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic view of the sheet structure of the present invention, wherein the arrow indicates a spiral structure;
FIG. 2 is a schematic view of the molecular orientation of the sheet body of the present invention, wherein the direction indicated by the arrow is the molecular orientation direction of the sheet body;
fig. 3 is a schematic view of the lamellar spiral structure and the multidirectional bending-adjusting catheter including the same according to the present invention;
FIG. 4 is a schematic view of the proximal end of the multi-directional bending-adjustable catheter of the present invention;
FIG. 5 is a schematic structural view of a third tab of the present invention;
wherein:
the method comprises the following steps of 1-a pipe body, 2-a sheet body layer, 3-a spiral line, 4-a line cavity, 5-a first pull ring, 6-a second pull ring, 7-a third pull ring, 8-a first pull line, 9-a second pull line, 10-a third pull line, 11-a wire pulling groove, 12-a reinforcing groove, 13-a bent notch, 14-a developing ring, 15-a conveying pipe and 16-an outer wrapping pipe.
Detailed Description
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as is understood by those of ordinary skill in the art to which the invention belongs.
All numerical values recited herein as between the lowest value and the highest value are intended to mean all values between the lowest value and the highest value in increments of one unit when there is more than two units difference between the lowest value and the highest value.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second", etc. 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," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
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 by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with specific embodiments. It is noted that in the detailed description of these embodiments, in order to provide a concise description, all features of an actual implementation may not be described in detail.
Examples
The embodiment provides a sheet body spiral structure and a multidirectional bending guide pipe comprising the same.
As shown in fig. 1 and fig. 2, the lamellar spiral structure in this embodiment includes a pipe body 1 and a lamellar layer 2.
The pipe body 1 is a bendable pipe body.
In one embodiment, the plurality of sheets are arranged in any one of a complex arrangement, a parallel arrangement and a semi-complex arrangement; the composite arrangement is that a plurality of sheet bodies are mutually and completely overlapped to obtain a plurality of combined sheet body layers of the same material or different materials (when the sheet bodies of different materials are adopted for combination, a plurality of combined sheet body layers with different properties can be obtained), and then the combined sheet body layers form a spiral structure; the parallel arrangement is that a plurality of sheet bodies are parallel to form a spiral structure, and adjacent sheet bodies are not overlapped, so that a thin sheet body layer is obtained, and when a plurality of sheet bodies made of different materials are adopted, a sheet body layer with different performances can be formed; the semi-composite arrangement is characterized in that a plurality of sheet bodies are not completely overlapped with each other, so that a part of the adjacent sheet bodies is overlapped, the non-overlapped part is overlapped with the adjacent sheet body on the other side to form a plurality of combined sheet body layers (when the sheet bodies made of different materials are combined, a plurality of combined sheet body layers with different performances can be obtained), and the problem that gaps at splicing positions are not covered by the sheet bodies when the sheet bodies are arranged in a composite manner and arranged in parallel to form a spiral structure is solved.
The molecular orientation of the sheet is the same as the direction of the helical structure.
As shown in fig. 3 to 5, the multi-directional bending catheter of the present embodiment includes the aforementioned lamellar spiral structure as a bending section; the multi-directional bending catheter further comprises a conveying pipe 15, a pull wire, a pull ring and an operating handle arranged at the proximal ends of the conveying pipe 15 and the pull wire.
The outside of lamellar body helical structure is provided with first pull ring 5, first pull ring 5 sets up at lamellar body helical structure distal end for fixed first acting as go-between 8 and through the taut or relaxation messenger lamellar body helical structure of first acting as go-between 8 crooked.
The far end of conveying pipe 15 be connected with lamellar body helical structure's near end, the near end and the operating handle of conveying pipe 15 are connected. The outer side wall of the conveying pipe 15 is provided with one or more stay wire cavities 4 along the axial direction of the conveying pipe 15, and each stay wire can penetrate through the stay wire cavities 4 and then is connected with each pull ring. The number of the stay wire cavities 4 corresponds to the number of stay wires, and each stay wire cavity 4 is used for one stay wire to pass through.
The pull lines can only comprise the first pull line 8, and can also comprise a second pull line 9 and a third pull line 10, and the positions of the pull lines on the conveying pipe 15 and the sheet body spiral structure are not overlapped. Each of the pull wires is a sheet structure, and a 304 stainless steel sheet may be preferably used, and the cross-sectional dimension thereof may be 0.15mm × 0.48mm, but is not limited thereto. The adoption of the sheet structure can ensure that the bending direction of each stay wire is fixed. The third stay wire 10 may be a stay wire with a certain pre-tightening force, or a stay wire made of a material with small elastic deformation.
In a specific embodiment, the pull wires comprise a first pull wire 8 and a third pull wire 10, and a third pull ring 7 is further disposed outside the delivery tube 15 and located at the distal end of the delivery tube 15 for fixing the third pull wire 10. The third pull wire 10 passes through the pull wire cavity 4 arranged outside the delivery pipe 15 and used for passing through the third pull wire 10, and then is fixedly connected with the operation handle or directly fixed at the near end of the delivery pipe 15 (when the third pull wire 10 is a pull wire with a certain pretightening force or a pull wire made of a material with small elastic deformation, the third pull wire does not need to be connected with the operation handle). A wire drawing groove 11 for the first wire drawing 8 to pass through is also arranged on the third wire drawing 7. As a further preferable mode, the position of the first pulling wire 8 and the position of the third pulling wire 10 are symmetrically arranged by 180 degrees (i.e. central axis symmetry) about the conveying pipe 15 and the axis of the pipe body 1 of the lamellar spiral structure, so that the tensioning eccentric force generated by the first pulling wire 8 on the conveying pipe 15 can be greatly counteracted, and the conveying pipe 15 is prevented from bending.
In a particularly preferred embodiment, a second pull ring 6 may be further provided at the outer side of the lamellar helix, and the second pull ring 6 is provided at the middle of the lamellar helix for fixing the second pull wire 9 and bending the lamellar helix by tightening or loosening the second pull wire 9. The second pull ring 6 is also provided with a pull wire groove for the first pull wire 8 to pass through, so that the first pull wire 8 is only fixedly connected with the first pull ring 5. As shown in fig. 5, the third tab 7 is also provided with a corresponding tab slot 11 for the second tab 9 to pass through, thereby fixedly connecting the second tab 9 only to the second tab 6. It is further preferable that the number of the second pulling wires 9 is two, and the two second pulling wires 9 are symmetrically arranged at 180 ° with respect to the axis of the conveying pipe 15 and the pipe body 1 of the lamellar spiral structure (i.e., are central-axis symmetric). More preferably, the two third wires 10, the first wires 8, and the second wires 9 are uniformly arranged along the circumferential direction of the pipe body.
In a specific preferred embodiment, the first tab 5, the second tab 6 and the third tab 7 are further respectively provided with a plurality of reinforcing grooves 12 arranged along the circumferential direction; the opening direction of the reinforcing groove 12 is towards the wire cavity 4. The reinforcing groove 12 can enhance the connection strength of the pull ring and the pipe body.
In a particularly preferred embodiment, a plurality of bent notches 13 are arranged on the second pull wire 9 and the third pull wire 10 which are positioned between the first pull ring 5 and the third pull ring 7; the plurality of bent notches 13 are respectively arranged at two sides of each stay wire, and the bent notches 13 at the two sides are alternately arranged along the length direction of each stay wire. The arrangement of the bent notch 13 enables the bent pipe sections formed by the sheet body helical structure to be mutually avoided when being bent towards the first direction or the second direction, so that interference is prevented.
The outer tube 16 is arranged on the outer side of the conveying tube 15 and the sheet spiral structure, so that each pull ring, each pull wire and each pull wire cavity 4 are positioned on the inner side of the outer tube 16.
In a particularly preferred embodiment, the operating handle described in this embodiment may adopt an existing operating handle structure, and this embodiment is not particularly limited as long as the tightening and loosening of each pulling wire can be achieved.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (8)
1. A slice body helical structure is characterized by comprising a tube body and a slice body layer;
the pipe body is a bendable pipe body, and the sheet body layer is wound on the outer side of the pipe body along the spiral line direction to form a spiral structure;
the sheet body layer comprises a plurality of sheet bodies, and the plurality of sheet bodies are formed by winding the plurality of sheet bodies on the outer side of the pipe body in sequence;
the arrangement modes of the plurality of sheet bodies comprise composite arrangement, parallel arrangement and semi-composite arrangement.
2. The blade spiral structure of claim 1, wherein the blade layer is comprised of a blade of one material or a plurality of blades of different materials.
3. A blade helix according to claim 2, wherein the material of the blade is a medical grade plastic and the molecular orientation of the blade is in the same direction as the helix.
4. The blade spiral structure of any one of claims 1-3, wherein the blade has a thickness of 0.1mm to 0.5mm.
5. A multidirectional tuning curve catheter comprising the lamellar helix of any of claims 1 to 4.
6. The multidirectional tuning catheter in accordance with claim 5, further comprising a pull ring disposed on the lamellar helix, the pull ring comprising a first pull ring disposed at a distal end of the lamellar helix for securing the first pull wire and bending the lamellar helix by tightening or loosening of the first pull wire.
7. The multidirectional bending catheter according to claim 6, wherein the pull ring further comprises a second pull ring disposed at a middle portion of the lamellar helix for securing a second pull wire and bending the lamellar helix by tightening or loosening the second pull wire;
and a pull wire groove for the first pull wire to pass through is further arranged on the second pull ring.
8. The multidirectional turning catheter according to claim 5, 6 or 7, further comprising a delivery tube, a pull wire, and an operating handle disposed at a proximal end of the delivery tube and the pull wire;
the far end of the conveying pipe is connected with the near end of the sheet spiral structure, and the near end of the conveying pipe is connected with the operating handle;
the pull wire comprises a first pull wire or a first pull wire and a second pull wire;
the operating handle is fixedly connected with the near ends of the first pull wire and the second pull wire respectively, and the first pull wire and the second pull wire are driven to be tensioned and loosened through the operating handle;
a pull wire cavity for the first pull wire and the second pull wire to pass through is formed in the outer side of the conveying pipe;
the far end of the conveying pipe is also provided with a third pull ring, the pull wire further comprises a third pull wire, the third pull ring is used for fixing the third pull wire, and the outer side of the conveying pipe is provided with a pull wire cavity used for penetrating through the third pull wire;
a pull wire groove for the first pull wire and the second pull wire to pass through is formed in the third pull ring;
the positions of the first pull wire, the second pull wire and the third pull wire on the conveying pipe and the sheet body spiral structure are not overlapped;
the outer side of the conveying pipe and the sheet body spiral structure is also provided with an outer pipe, so that each pull ring, each pull wire and each pull wire cavity are positioned on the inner side of the outer pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220392312.1U CN217592928U (en) | 2022-02-25 | 2022-02-25 | Lamellar body helical structure reaches multidirectional accent curved pipe including it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220392312.1U CN217592928U (en) | 2022-02-25 | 2022-02-25 | Lamellar body helical structure reaches multidirectional accent curved pipe including it |
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| Publication Number | Publication Date |
|---|---|
| CN217592928U true CN217592928U (en) | 2022-10-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220392312.1U Active CN217592928U (en) | 2022-02-25 | 2022-02-25 | Lamellar body helical structure reaches multidirectional accent curved pipe including it |
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| Country | Link |
|---|---|
| CN (1) | CN217592928U (en) |
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- 2022-02-25 CN CN202220392312.1U patent/CN217592928U/en active Active
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