CN118664347B - Processing method of active bending section and active bending section - Google Patents
Processing method of active bending section and active bending section Download PDFInfo
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- CN118664347B CN118664347B CN202411163976.0A CN202411163976A CN118664347B CN 118664347 B CN118664347 B CN 118664347B CN 202411163976 A CN202411163976 A CN 202411163976A CN 118664347 B CN118664347 B CN 118664347B
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- 238000005452 bending Methods 0.000 title claims abstract description 87
- 238000003672 processing method Methods 0.000 title abstract description 12
- 238000005520 cutting process Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 29
- 238000004080 punching Methods 0.000 claims description 11
- 238000003754 machining Methods 0.000 claims description 9
- 238000009826 distribution Methods 0.000 claims description 6
- 230000000994 depressogenic effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000013016 damping Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000036285 pathological change Effects 0.000 description 2
- 231100000915 pathological change Toxicity 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention relates to the technical field of endoscopes, and particularly discloses a processing method of an active bending section and the active bending section, wherein the processing method comprises the following steps: stamping a plurality of annular depressions in the tubular member; cutting the tubular member to form a plurality of mutually separated pivoting units, wherein each pivoting unit comprises a tubular base body, and arc lugs and annular concave parts of the arc lugs distributed at two ends of the tubular base body; stamping the arc-shaped support lugs to enable parts of the arc-shaped support lugs to be inwards recessed to form abutting parts, and limiting and matching the abutting parts with the inner walls of the adjacent pivoting units along the radial direction of the tubular base body; in the above-mentioned scheme, the butt portion of arc journal stirrup can be with the inner wall of adjacent pivot unit spacing cooperation in radial direction to realize two adjacent pivot unit spacing in radial direction, make the initiative bending section that cutting processing formed have stronger structural stability from this, thereby ensure the security that the endoscope used.
Description
Technical Field
The invention relates to the technical field of endoscopes, in particular to a processing method of an active bending section and the active bending section.
Background
The endoscope is a medical instrument which stretches the insertion part into the human body, and observes the internal tissues of the human body through the camera module at the distal end of the insertion part, so that doctors can be helped to judge the pathological change position and the tissue structure characteristics of the pathological change position in the patient. The endoscope comprises an operating handle and an inserting part, and in actual operation, the pulling wheel is driven to rotate by pulling the pulling rod on the operating handle so as to adjust the posture of the active bending section of the inserting part, thereby adjusting the orientation of the far-end module and realizing the functions of fixed point observation and the like.
In the related art, the active bending section is usually riveted by a plurality of pivoting units or integrally cut from a tubular member. The active bending section formed by riveting the plurality of pivoting units has the characteristic of high structural stability, so that the active bending section is not easy to loosen and fall off in a complex use environment, the use safety of an endoscope can be obviously improved, the active bending section formed by riveting has the characteristics of complex structure and high tooling requirement, and the production cost of the whole active bending section is greatly improved; the active bending section formed by integrally cutting the tubular member has lower requirements on manufacturing and tooling, but the adjacent two pivoting units are easy to fall off when being stressed greatly, namely the stability of the active bending section is poor.
Therefore, providing an active bending section with high structural stability and low manufacturing cost is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention discloses a processing method of an active bending section and the active bending section, which are used for solving the technical problem that the stability of the active bending section formed by cutting in the related technology is poor.
In order to solve the problems, the invention adopts the following technical scheme:
In a first aspect, the present application provides a method for machining an active bending section, the method comprising:
Stamping the tubular member to form a plurality of annular depressions on the tubular member along the axial direction thereof, wherein the annular depressions are depressed from the inner side of the tubular member to the outer side of the tubular member;
Cutting a tubular member to form a plurality of mutually separated pivoting units, wherein each pivoting unit comprises a tubular base body, arc-shaped lugs and lugs, the arc-shaped lugs and the lugs are formed at two ends of the tubular base body, and the arc-shaped lugs are annular concave parts;
Stamping is carried out on the arc-shaped supporting lugs, so that the parts of the arc-shaped supporting lugs are inwards recessed to form abutting parts, and the abutting parts are in limit fit with the inner walls of the adjacent pivoting units along the radial direction of the tubular base body.
Further, after stamping the arc-shaped support lug to enable the part of the arc-shaped support lug to be recessed inwards to form the abutting part, the processing method further comprises the following steps: and an avoidance notch is formed on the arc-shaped supporting lugs in a cutting mode, and the avoidance notch is adjacent to the abutting part.
Further, the annular recess includes a first section that forms the arcuate lugs and a second section that forms part of the lugs.
Further, the radially outward recess of the first segment is the same size as the radially outward recess of the second segment.
Further, the lug comprises a lug base and a front part, the lug base is connected with the tubular base through the front part, and the second section forms the front part; the radial outward concave size of the first section is smaller than that of the second section, so that a radial gap is formed between the arc-shaped support lugs and the front part, and the arc-shaped support lugs can be rotatably accommodated in a space surrounded by the front part.
Further, the outer side surface of the lug base is a plane; and/or the inner side surface of the lug base is a plane.
Further, in the stamped pivot unit, the arc lugs and the lugs are distributed in the same circumferential direction of the tubular base; or in the pivoting unit formed by punching, the distribution direction of the arc lugs is perpendicular to the distribution direction of the lugs along the circumferential direction of the tubular base body.
Further, in the punched pivot unit, the abutment portion abuts against at least one of the tubular base and the lug of the adjacent pivot unit.
Further, the arc-shaped lugs axially protrude from the first end of the tubular base body, and the two arc-shaped lugs are oppositely arranged to form a first accommodating area therebetween, and the first accommodating area is used for accommodating lugs of adjacent pivoting units; the lugs axially protrude out of the second end of the tubular base body, a second accommodating area is formed between two sides of the lugs and the tubular base body, and the second accommodating area is used for accommodating arc lugs of adjacent pivoting units.
In a second aspect, the present application further provides an active bending section, where the active bending section is formed by the foregoing method for machining an active bending section, and the active bending section includes a plurality of pivoting units, where the plurality of pivoting units are connected in turn end to end, and two adjacent pivoting units are rotationally connected.
The technical scheme adopted by the invention can achieve the following beneficial effects:
According to the processing method of the active bending section and the active bending section, the tubular member is punched to form the plurality of annular recesses distributed along the axial direction of the tubular member, the tubular member is cut to form the plurality of pivoting units which are connected end to end and are rotationally connected, the end part of each arc-shaped supporting lug is punched inwards to form the abutting part, and the abutting part is in limit fit with the inner wall of the adjacent pivoting unit in the radial direction, so that limit fit of the two adjacent pivoting units in the radial direction is realized, even if the integral active bending section processed in the punching, cutting and re-punching modes has larger bending amplitude, the two adjacent pivoting units cannot be dislocated in the radial direction, so that the condition that radial separation occurs between the two adjacent pivoting units is avoided, the structural stability of the whole active bending section is improved, and the active bending section formed by integrally cutting the tubular member has the advantages of simple processing and low manufacturing cost, and simultaneously has the stability of the riveting active bending section, so that the safety of the use of an endoscope is ensured.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a method for machining an active bending section according to an embodiment of the present application;
FIG. 2 is a second flow chart of a method for machining an active bending section according to an embodiment of the present application;
FIG. 3 is a schematic illustration of a tubular member stamped to form an annular recess in accordance with an embodiment of the present application;
FIG. 4 is a schematic view of a tubular member cut to form a pivoting unit according to an embodiment of the present application;
FIG. 5 is one of the schematic structural views of the pivoting unit according to the embodiment of the present application;
FIG. 6 is a second schematic diagram of a pivoting unit according to an embodiment of the present application;
FIG. 7 is one of the rotational connection schematic views of two pivoting units according to an embodiment of the present application;
FIG. 8 is a schematic illustration of the structure of an active bending section according to an embodiment of the present application;
FIG. 9 is a second schematic view of an active bending section according to an embodiment of the present application;
FIG. 10 is a third schematic diagram of the pivoting unit according to the embodiment of the present application;
FIG. 11 is a second schematic view of a rotational connection of two pivoting units according to an embodiment of the present application;
FIG. 12 is a third schematic view of the rotational connection of two pivoting units according to an embodiment of the present application;
In the figure:
10. a tubular member; 10a, annular recess; 100. a tubular base; 200. arc support lugs; 210. an abutting portion; 220. avoiding the notch; 300. a lug; 310. a lug base; 320. a flap portion; 400. a first receiving area; 500. a second accommodation region; 510. the gap is rotated.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
In the related art, the active bending section is usually formed by riveting a plurality of pivoting units or integrally cutting a tubular member, and the active bending section formed by riveting has the characteristics of high connection strength and strong structural stability, but has higher production and manufacturing cost, and the tooling is more complicated, so that the requirement on operators in the riveting process is higher; the active bending section formed by integrally cutting the tubular member optimizes the production and tooling process of the active bending section, but due to lack of radial limitation, when the active bending section has larger bending amplitude, two adjacent pivoting units are easy to misplace in the radial direction, so that the whole active bending section is loose, and the pivoting units fall off each other, so that the use safety of the endoscope is difficult to be ensured.
In view of this, the embodiment of the present application discloses a method for processing an active bending section and an active bending section, and the method for processing an active bending section and the active bending section provided by the embodiment of the present application are described in detail below with reference to fig. 1 to 11 by means of a specific embodiment and application scenario thereof.
The embodiment of the application discloses a processing method of an active bending section, which is used for manufacturing and forming the active bending section, can be applied to an endoscope, and is used for facilitating clear and detailed description of the processing method of the active bending section.
As an example, referring to fig. 5, 6, 7 and 8, the active bending section includes a plurality of pivot units connected end to end in sequence, any two adjacent pivot units are rotationally connected by a pivot structure, each pivot unit includes a tubular base 100, an arc-shaped support lug 200 and a lug 300, wherein the arc-shaped support lug 200 axially protrudes from a first end of the tubular base 100, the lug 300 axially protrudes from a second end of the tubular base 100, the tubular base 100 is formed with two radially opposite pivot portions at the first end, each pivot portion includes two arc-shaped support lugs 200 with opposite bending directions, and the two arc-shaped support lugs 200 of the same pivot portion form a clamp for one lug 300, so that the two arc-shaped support lugs 200 can rotate therebetween and the lug 300 can be prevented from being axially separated.
In the embodiment of the present application, the end of the arc-shaped support lug 200 is recessed radially inwards in the main body of the arc-shaped support lug 200 to form the abutting part 210 radially offset from the tubular base body 100, the abutting part 210 extends along two sides of the main body of the arc-shaped support lug 200, and the abutting part 210 and the inner wall of the adjacent pivoting unit are located along the radial direction of the tubular base body 100.
In this way, two adjacent pivoting units can form a limit in the radial direction through the abutting part 210 on the arc-shaped supporting lug 200, even if the active bending section generates a larger bending amplitude, the two adjacent pivoting units cannot be dislocated in the radial direction, so that the situation that the two adjacent pivoting units are separated in the radial direction is avoided, the structural stability of the whole active bending section is improved, the active bending section formed by integrally cutting the tubular member has the stability of the riveted active bending section, and the use safety of the endoscope is ensured.
Based on the foregoing description of the active bending section, please refer to fig. 1,3, 4, 5 and 7, the method for processing the active bending section according to the embodiment of the application includes the following steps:
In step S100, the tubular member 10 is punched, so that a plurality of annular recesses 10a are formed in the tubular member 10, the annular recesses 10a being recessed from the inside of the tubular member 10 toward the outside of the tubular member 10, and being distributed in the axial direction thereof.
In step S100, the tubular member 10 is a thin-walled member having a certain ductility in the radial direction, and when a radially outward force is applied to the inside of the tubular member 10, the aforementioned annular recess 10a may be formed, and illustratively, an annular mold may be used to abut against the inner wall of the tubular member 10, and when a radially outward force is applied to the annular mold, the annular mold is capable of acting on the inner wall of the tubular member 10 and generating the annular recess 10a.
In step S200, the tubular member 10 is cut to form a plurality of pivot units separated from each other, the pivot units include a tubular base 100, an arc-shaped lug 200, and a lug 300, the arc-shaped lug 200 and the lug 300 are formed at both ends of the tubular base 100, and the arc-shaped lug 200 is a portion of the annular recess 10 a.
In step S200, the tubular member 10 may be cut by laser cutting to form a plurality of end-to-end pivot units. Specifically, two radially opposite pivot portions are cut at the first end of the tubular base 100, each pivot portion includes two arc-shaped lugs 200 with opposite arc-shaped bending directions, a first accommodating area 400 is defined between the two arc-shaped lugs 200 of the same pivot portion, the first accommodating area 400 is matched with the shape of the lug 300, the lug 300 is rotatably accommodated in the first accommodating area 400, and the two arc-shaped lugs 200 of the same pivot portion form a clamping type for the lug 300 so as to avoid axial detachment of two adjacent pivot units.
Two diametrically opposed lugs 300 are cut into the second end of the tubular base body 100, a second receiving area 500 is formed between the two sides of the lugs 300 and the tubular base body 100, the shape of the second receiving area 500 matches the shape of the arc-shaped lugs 200, and the arc-shaped lugs 200 are slidably received in the second receiving area 500.
In two adjacent pivoting units of the active bending section, the arc-shaped lugs 200 of one pivoting unit are in sliding fit in the second receiving areas 500 of the other pivoting unit, and the lugs 300 of the other pivoting unit are in rotating fit in the first receiving areas 400 of the pivoting units, so that a pivoting structure of the two pivoting units is formed.
And step S300, stamping the arc-shaped support lugs 200, so that a part of the arc-shaped support lugs 200 is recessed inwards to form an abutting part 210, and the abutting part 210 is in limit fit with the inner wall of the adjacent pivoting unit along the radial direction of the tubular base body 100.
In step S300, the end portion of the arc-shaped support lug 200 is stamped to enable the end portion to be concavely deformed radially inwards, the portion of the arc-shaped support lug 200 which is not concavely deformed inwards forms an arc-shaped support lug base body, the portion of the arc-shaped support lug 200 which is concavely deformed inwards forms an abutting portion 210, and the arc-shaped support lug 200 formed by cutting is a portion of a tubular member and has a certain radian, when a stamping force is applied to the arc-shaped support lug 200 to enable the arc-shaped support lug to be inwardly deformed, the portion of the arc-shaped support lug 200 which is concavely deformed inwards can be spread outwards, and accordingly the abutting portion 210 which is in limit fit with the inner wall of an adjacent pivoting unit is formed. It should be noted that, the abutment portion 210 is in limit fit with the inner wall of the adjacent pivoting unit in the radial direction, and the abutment portion 210 may abut against the inner wall of the tubular base body 100 of the adjacent pivoting unit, or the abutment portion 210 may abut against the inner wall of the lug 300 of the adjacent pivoting unit, that is, the abutment portion 210 abuts against the inner wall of at least one of the tubular base body 100 and the lug 300 of the adjacent pivoting unit.
In a preferred embodiment, the abutment 210 abuts against the tubular base body 100 and the lug 300 of the adjacent pivoting units simultaneously to form a radial limit, so that the abutment of both sides simultaneously can improve the sliding stability of the arc-shaped lug 200 in the second receiving area 500 when the two pivoting units are rotated relatively.
The inventor found in the research process that after the end of the arc-shaped lug 200 is punched to form the abutment portion 210, the arc-shaped lug substrate is still located in the second accommodating area 500, and the abutment portion 210 is located outside the second accommodating area 500 and abuts against the inner wall of the adjacent pivoting unit, so that the portion between the arc-shaped lug substrate and the abutment portion 210 abuts against the outer edge portion of the second accommodating area 500 while straddling the second accommodating area 500, so that a large rotation damping is generated, and the smoothness of bending of the whole active bending section is affected.
Based on this situation, in the embodiment of the present application, referring to fig. 2, 5 and 6, after the arc-shaped supporting lug 200 is punched to form the abutting portion 210, the processing method of the active bending section may further include step S400: an avoidance notch 220 is formed on the arc-shaped support lug 200 in a cutting mode, and the avoidance notch 220 is adjacent to the abutting portion 210.
In step S400, by the arrangement of the avoidance notch 220, when the portion of the arc-shaped support lug 200 spans out of the second accommodating area 500 to form the abutting portion 210, the portion abutting against the outer edge portion of the second accommodating area 500 by the adjacent pivoting unit is not provided, so that sliding damping of the arc-shaped support lug 200 in the second accommodating area 500 can be effectively reduced, and the arc-shaped support lug 200 can smoothly rotate in the second accommodating area 500, thereby ensuring smoothness of bending of the whole active bending section.
In some embodiments of the present application, when the annular recess 10a is punched in step S100, the annular recess 10a includes a first section and a second end, the first section forms the arc-shaped lug 200 after the tubular member 10 is cut in step S200 to form a plurality of pivot units separated from each other, the second section forms part of the lug 300, specifically, the lug 300 includes the lug base 310 and the flap 320, the lug base 310 is connected to the tubular base 100 through the flap 320, the second end forms the flap 320 of the lug 300, and it can be appreciated that there is a rotational gap 510 between an end of the arc-shaped lug 200 and the flap 320, and the rotational gap 510 can provide a redundant space for rotation of the arc-shaped lug 200. In this way, when the basic outline of the arc-shaped support lug 200 is formed by punching, that is, when the arc-shaped support lug 200 recessed outwards is formed by punching outwards, the basic outline of the flap 320 can be formed by punching synchronously.
In a further embodiment, referring to fig. 1, 10, 11 and 12, when the annular recess 10a is formed by punching in step S100, the radially outward recess size of the first section is smaller than the radially outward recess size of the second section, so that a radial gap is formed between the arc-shaped lug 200 and the flap 320, and the arc-shaped lug 200 is rotatably accommodated in the space surrounded by the flap 320. So can ensure that two adjacent pivot units can take place the great relative rotation of rotation range, can improve the crooked range of whole initiative bending section from this, when being applied to the endoscope, can ensure that the endoscope can cover more extensive region, reduce visual blind area, simultaneously, the crooked higher degree of freedom that provides of great range can take place for the initiative bending section, make doctor or operating personnel can control the crooked direction and the angle of initiative bending section more accurately to adapt to different detection or operation demands.
In the embodiment of the present application, when the annular recess 10a is formed by punching, a resisting force can be applied to the portion outside the tubular member 10 and located in the annular recess 10a, the portion of the tubular member 10 located in the annular recess 10a forms the lug base 310, and the outer side surface of the lug base 310 is configured to be planar when the annular recess 10a is formed by punching, so that the basic profile of the arc-shaped lug 200 formed by punching and the basic profile of the flap 320 can be controlled stably.
In the embodiment of the present application, since the tubular structure is a thin-walled member as a whole, in the case where the outer side surface of the lug base 310 is a flat surface, the inner side surface of the lug base 310 is a flat surface, and when the abutting portion 210 is formed by pressing inward, the abutting portion 210 can abut against the inner side surface of the lug base 310. Since the inner surface of the lug base 310 is a flat surface, the contact portion 210 and the inner surface of the lug base 310 can have a large contact area, and the stability of the radial limit can be ensured.
The embodiment of the application also discloses an active bending section which is formed by processing the tubular member by the processing method, and comprises a plurality of pivoting units, wherein the pivoting units are connected end to end in sequence, and two adjacent pivoting units are connected in a rotating way.
In an alternative embodiment of the present application, referring to fig. 5, 6, 7 and 8, the arc lugs 200 and the lugs 300 may be distributed in the same circumferential direction of the tubular base 100, so that when the plurality of pivot units are connected end to form an active bending section, the active bending section can be bent in two directions.
In an alternative embodiment of the present application, referring to fig. 9, the distribution direction of the arc lugs 200 and the distribution direction of the lugs 300 are perpendicular along the circumferential direction of the tubular base 100, so that when the plurality of pivoting units are connected end to form an active bending section, the active bending section can bend in four directions. It will be appreciated that the selection of the bi-directional bending active bending section and the four-directional bending active bending section can be made adaptively according to actual needs, and the embodiments of the present application are not particularly limited thereto.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention.
Claims (10)
1. A method of machining an active bending section, comprising:
Stamping the tubular member to form a plurality of annular depressions on the tubular member along the axial direction thereof, wherein the annular depressions are depressed from the inner side of the tubular member to the outer side of the tubular member;
Cutting a tubular member to form a plurality of mutually separated pivoting units, wherein each pivoting unit comprises a tubular base body, arc-shaped lugs and lugs, the arc-shaped lugs and the lugs are formed at two ends of the tubular base body, and the arc-shaped lugs are annular concave parts;
Stamping is carried out on the arc-shaped supporting lugs, so that the parts of the arc-shaped supporting lugs are inwards recessed to form abutting parts, and the abutting parts are in limit fit with the inner walls of the adjacent pivoting units along the radial direction of the tubular base body.
2. The method of claim 1, wherein after stamping the arc lugs to recess portions of the arc lugs inwardly to form abutments, the method further comprises:
and an avoidance notch is formed on the arc-shaped supporting lugs in a cutting mode, and the avoidance notch is adjacent to the abutting part.
3. The method of machining an active bending section according to claim 2, wherein the annular recess comprises a first section and a second section, the first section constituting the arcuate lugs and the second section constituting part of the lugs.
4. A method of machining an active bending section according to claim 3, wherein the first section has a radially outward recess size that is the same as the second section.
5. A method of machining an active bending section according to claim 3, wherein the lug comprises a lug base and a flap, the lug base being connected to the tubular base by the flap, the second section constituting the flap;
The radial outward concave size of the first section is smaller than that of the second section, so that a radial gap is formed between the arc-shaped support lugs and the front part, and the arc-shaped support lugs can be rotatably accommodated in a space surrounded by the front part.
6. The method of claim 5, wherein the outer side of the lug base is planar.
7. The method of machining an active bending section according to claim 1, wherein in the stamped and formed pivot unit, the arc lugs and lugs are distributed in the same circumferential direction of the tubular base body; or in the pivoting unit formed by punching, the distribution direction of the arc lugs is perpendicular to the distribution direction of the lugs along the circumferential direction of the tubular base body.
8. The method of claim 1, wherein in the stamped pivot unit, the abutment is in abutment with at least one of a tubular base and a lug of an adjacent pivot unit.
9. The method of claim 1, wherein the arcuate lugs axially project from the first end of the tubular base, the arcuate lugs being disposed opposite one another to form a first receiving area therebetween for receiving the lugs of an adjacent pivot unit;
the lugs axially protrude out of the second end of the tubular base body, a second accommodating area is formed between two sides of the lugs and the tubular base body, and the second accommodating area is used for accommodating arc lugs of adjacent pivoting units.
10. An active bending section which is characterized by being formed by processing the active bending section according to any one of claims 1-9, wherein the active bending section comprises a plurality of pivoting units, the pivoting units are connected end to end in sequence, and two adjacent pivoting units are connected in a rotating manner.
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| CN202411163976.0A CN118664347B (en) | 2024-08-23 | 2024-08-23 | Processing method of active bending section and active bending section |
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| CN202411163976.0A CN118664347B (en) | 2024-08-23 | 2024-08-23 | Processing method of active bending section and active bending section |
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| JP5404154B2 (en) * | 2009-04-21 | 2014-01-29 | オリンパス株式会社 | Endoscope bending section and manufacturing method of bending tube |
| DE202011109769U1 (en) * | 2011-07-01 | 2012-03-15 | Stephan Wieth | Angled unit for an endoscope |
| CN107518861A (en) * | 2017-06-29 | 2017-12-29 | 杭州无创光电有限公司 | Snake osteon and snake bone structure |
| CN113040687A (en) * | 2019-12-27 | 2021-06-29 | 宁波思康鑫电子科技有限公司 | Endoscope snake bone and manufacturing process thereof |
| CN112294237B (en) * | 2020-10-23 | 2022-12-30 | 新光维医疗科技(苏州)股份有限公司 | Snake bone connecting structure for endoscope |
| EP4416809A1 (en) * | 2021-10-13 | 2024-08-21 | Hornak, David P. | Articulation devices, systems, and methods |
| CN114903413A (en) * | 2022-05-30 | 2022-08-16 | 成都科汇模具有限公司 | Snake bone structure for endoscope and manufacturing method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020135362A1 (en) * | 2018-12-25 | 2020-07-02 | 深圳市先赞科技有限公司 | Bending part of endoscope, and endoscope |
| CN114947699A (en) * | 2022-04-14 | 2022-08-30 | 上海成运医疗器械股份有限公司 | Rivet-free snake bone for endoscope and production process thereof |
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