Endoscope body and connecting process thereof

Abstract

Provided are an endoscope body and a connecting process thereof. The endoscope body comprises a tip end (1), a snake bone piece (2), and an insertion piece (3). The tip end (1) and the insertion piece (3) are arranged at intervals in a first direction. The snake bone piece (2) comprises a thermoplastic part (21) and a snake bone part (22). In the first direction, two ends of the snake bone part (22) are connected to the tip end (1) and the insertion piece (3), respectively, the thermoplastic part (21) is arranged around the peripheral surface of the snake bone part (22), and two ends of the thermoplastic part (21) coat and are thermally fused to the peripheral surface of the tip end (1) and the peripheral surface of the insertion piece (3), respectively. According to the endoscope body and the connecting process thereof, the thermoplastic part (21) of the snake bone piece (2) coats the peripheral surface of the tip end (1) and the peripheral surface of the insertion piece (3) and is fixed to the tip end (1) and the insertion piece (2) in a thermally fusion manner. Compared with bonding via an optical adhesive, the thermoplastic fusion mode features lower cost, higher efficiency, and better reliability.

Description

Endoscope body and connection process thereof Technical Field

[0001] The present application relates to the technical field of endoscopes, and in particular to an endoscope body and a connection process thereof. Background Art

[0002] Endoscopes are essential devices for disease diagnosis and treatment in modern medicine, and usually consist of a body and a handle.

[0003] The current endoscope has a flexible insertion part with a slender shape. The front end of the insertion part is a tip that integrates an image sensor and a light source. A snake bone part is provided in the insertion part to control the bending direction and degree of the tip. After the doctor inserts the tip of the insertion part into the body cavity of the subject, the in vivo image of the patient's body cavity can be obtained without cutting the subject, thereby reducing the burden on the patient.

[0004] To ensure a sealed insert and prevent defects caused by liquid intrusion into the tip, the outer skin of the snake-bone assembly must be bonded to the outer surfaces of the tip and the insert with optical adhesive during installation. However, optical adhesive bonding requires significant labor and material costs, requires light curing after each application, and is inefficient. Furthermore, uneven application or localized adhesive shortages can affect the seal, resulting in poor reliability. Summary of the Invention

[0005] Based on this, it is necessary to provide an endoscope body and its connection process to address the problems of high cost, low efficiency and poor reliability of the above-mentioned optical adhesive bonding method.

[0006] According to one aspect of the present application, an endoscope body is provided, comprising a tip, a snake bone, and an insert, wherein the tip and the insert are spaced apart along a first direction;

[0007] The snake bone component includes a thermoplastic component and a snake bone component. Along the first direction, the two ends of the snake bone component are respectively connected to the tip head and the insert. The thermoplastic component is arranged around the outer circumference of the snake bone component, and the two ends of the thermoplastic component are respectively covered and welded to the outer circumference of the tip head and the outer circumference of the insert.

[0008] In one embodiment, the cross-sectional shape of the thermoplastic component along the direction perpendicular to the first direction is annular, the outer contour of the cross-sectional shape of the tip along the direction perpendicular to the first direction is circular or elliptical, and the outer contour of the cross-sectional shape of the insert along the direction perpendicular to the first direction is circular or elliptical.

[0009] According to another aspect of the present application, a process for connecting an endoscope body is provided, which is used for producing the endoscope body in any one of the above embodiments, comprising the following steps:

[0010] Connect the two ends of the snake bone component to the tip and the insert respectively;

[0011] The thermoplastic component is put on the snake bone component, and the two ends of the thermoplastic component are respectively covered on the outer peripheral surface of the tip and the outer peripheral surface of the insert;

[0012] The portion where the snake bone contacts the front end is welded, and the portion where the snake bone contacts the insert is welded.

[0013] In one embodiment, the step of welding the contact portion between the snake bone member and the insert member comprises:

[0014] Use a hot press jig to heat and weld the contact area between the thermoplastic component and the tip.

[0015] In one embodiment, the step of heating and welding the portion of the thermoplastic component that contacts the tip using a hot pressing jig includes:

[0016] Placing the portion of the thermoplastic component that contacts the tip into a hot pressing jig, and making two first side surfaces of the thermoplastic component that are opposite to each other contact the hot pressing jig;

[0017] Controlling the hot pressing jig to heat the two first side surfaces of the thermoplastic component so that the two first side surfaces of the thermoplastic component are welded to the tip;

[0018] Rotating the thermoplastic component and the tip about an axis along the first direction so that two second side surfaces of the thermoplastic component facing away from each other come into contact with the hot pressing jig;

[0019] Controlling the hot pressing jig to heat the two second side surfaces of the thermoplastic component so that the two second side surfaces of the thermoplastic component are welded to the tip;

[0020] The second side surface is located between the two first side surfaces and is connected to the two first side surfaces.

[0021] In one embodiment, the step of welding the contact portion between the snake bone member and the insert member comprises:

[0022] Use a hot press jig to heat and weld the contact area between the thermoplastic component and the insert.

[0023] In one embodiment, the step of heating and welding the contact portion between the thermoplastic component and the insert using a hot pressing jig includes:

[0024] Placing the portion of the thermoplastic component that contacts the insert into a hot pressing jig, and making two third sides of the thermoplastic component that are opposite to each other contact the hot pressing jig;

[0025] controlling the hot pressing jig to heat the two third side surfaces of the thermoplastic component so that the two third side surfaces of the thermoplastic component are welded to the insert;

[0026] Rotating the thermoplastic component and the insert about an axis along the first direction so that two fourth side surfaces of the thermoplastic component that are opposite to each other contact the hot pressing jig;

[0027] controlling the hot pressing jig to heat the two fourth sides of the thermoplastic component so that the two second sides of the thermoplastic component are welded to the insert;

[0028] The fourth side surface is located between the two third side surfaces and is connected to the two third side surfaces.

[0029] In one embodiment, the hot pressing jig includes a first jig and a second jig, wherein the first jig is provided with a first receiving groove on the side facing the second jig, and the first receiving groove has a first heating part therein; the second jig is provided with a second receiving groove on the side facing the first jig, and the second receiving groove has a second heating part therein; the thermoplastic component can be accommodated in a cavity enclosed by the first receiving groove and the second receiving groove, and heated and melted by the first heating part and the second heating part.

[0030] In one embodiment, the chamber has two heating surfaces and two avoidance surfaces arranged opposite to each other, the first heating portion and the second heating portion are respectively arranged on the two heating surfaces, and the thermoplastic component can be attached to the first heating portion and the second heating portion when the first jig and the second jig are attached, and there is a gap between the thermoplastic component and the two avoidance surfaces.

[0031] In one embodiment, the melting point of the thermoplastic component is lower than the melting point of the tip and the melting point of the insert.

[0032] The above-mentioned endoscope body and its connection process are achieved by covering the thermoplastic components of the snake bone on the outer peripheral surface of the tip and the outer peripheral surface of the insert, and fixing them to the tip and the insert by heating and melting. Compared with the optical adhesive bonding method, the thermoplastic melting method has lower cost, higher efficiency and better reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] FIG1 is a schematic structural diagram of an endoscope body according to some embodiments of the present application.

[0034] FIG2 is a schematic diagram of the structure between the thermoplastic component and the tip of the endoscope body in some embodiments of the present application.

[0035] FIG3 is a schematic structural diagram of a hot pressing jig according to some embodiments of the present application.

[0036] FIG4 is a schematic diagram of the structure between the endoscope body and the hot pressing jig according to some embodiments of the present application.

[0037] Figure numerals: 1. tip; 2. snake bone component; 21. thermoplastic component; 22. snake bone component; 23. first side surface; 24. second side surface; 3. insert; 4. hot pressing jig; 41. first jig; 42. second jig; 43. first heating part; 44. second heating part; 45. avoidance surface. DETAILED DESCRIPTION

[0038] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0039] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does 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 therefore cannot be understood as a limitation on this application.

[0040] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0041] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0042] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0043] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0044] Referring to FIG1 , one embodiment of the present application provides an endoscope body, comprising a tip 1, a serpentine 2, and an insert 3. The serpentine 2 and insert 3 together constitute the endoscope's elongated, flexible insertion portion. The tip 1, which integrates an image sensor and a light source, is positioned at the front end of the insertion portion. After inserting the tip 1 into the patient's body cavity, the physician can obtain in-vivo images of the patient's body cavity without incising the patient, thereby reducing the burden on the patient. Furthermore, the bending angle of the serpentine 2 can be adjusted by controlling the tension of the control cable within the serpentine 2, thereby controlling the direction and degree of bending of the insertion portion.

[0045] Specifically, the snake member 2 includes a thermoplastic component 21 and a snake member 22. The tip 1 and the insert 3 are spaced apart along a first direction. The two ends of the snake member 22 along the first direction are connected to the tip 1 and the insert 3, respectively, to achieve a connection between the tip 1 and the insert 3 through the snake member 22. The thermoplastic component 21 is disposed around the outer circumference of the snake member 22, and the two ends of the thermoplastic component 21 are respectively covered and welded to the outer circumference of the tip 1 and the outer circumference of the insert 3, thereby achieving a sealed end, preventing liquid from entering the tip 1 through the snake member 2.

[0046] The melting point of the thermoplastic component 21 is lower than that of the tip 1 and the insert 3. This prevents the tip 1 and the insert 3 from melting when the thermoplastic component 21 is welded to their outer circumferential surfaces. Specifically, in the embodiment of the present application, the tip 1 is made of polycarbonate, the snake component 22 is made of polyoxymethylene resin, and the thermoplastic component 21 is made of thermoplastic polyurethane rubber.

[0047] During the production of the endoscope body of the present application, the thermoplastic component 21 of the snake bone 2 is covered on the outer peripheral surface of the tip 1 and the outer peripheral surface of the insert 3, and is fixed to the tip 1 and the insert 3 by heating and melting. Compared with the optical adhesive bonding method, the thermoplastic melting method has lower cost, higher efficiency and better reliability.

[0048] 1 and 2 , in one embodiment, the cross-sectional shape of the thermoplastic component 21 along a first direction perpendicular to the first direction is annular, the outer contour of the cross-sectional shape of the tip 1 along the first direction perpendicular to the first direction is circular or elliptical, and the outer contour of the cross-sectional shape of the insert 3 along the first direction perpendicular to the first direction is circular or elliptical.

[0049] Specifically, the tip 1 has a first fixing portion along a direction perpendicular to the first direction. The outer contour of the cross section of the first fixing portion along the direction perpendicular to the first direction is circular or elliptical, and the outer diameter of the first fixing portion is consistent with the inner diameter of the thermoplastic component 21. Therefore, after the thermoplastic component 21 is mounted on the first fixing portion, it can fit tightly with the tip 1 to ensure a fixing effect.

[0050] The insert 3 has a second fixing portion along a direction perpendicular to the first direction. The outer contour of the cross section of the second fixing portion along the direction perpendicular to the first direction is circular or elliptical, and the outer diameter of the second fixing portion is consistent with the inner diameter of the thermoplastic component 21. Therefore, after the thermoplastic component 21 is mounted on the second fixing portion, it can fit tightly with the insert 3 to ensure the fixing effect.

[0051] 1 to 4 , an embodiment of the present application further provides a process for connecting an endoscope body, which is used for producing the endoscope body in any of the above embodiments, and includes the following steps:

[0052] The two ends of the snake bone component 22 are respectively connected to the tip 1 and the insert 3. Specifically, one end of the snake bone component 22 is connected to the first fixing portion of the tip 1, and the other end of the snake bone component 22 is connected to the second fixing portion of the insert 3.

[0053] Slide the thermoplastic component over the snake-bone component, with its ends covering the outer circumferences of the tip and insert, respectively. Specifically, slide one end of the thermoplastic component 21 over the first fixing portion of the tip 1, and the other end over the second fixing portion of the insert 3.

[0054] The portion of the snake member contacting the tip is welded, and the portion of the snake member contacting the insert is welded. Specifically, a hot press jig 4 is used to heat and weld the portion of the thermoplastic component 21 contacting the tip 1, and the portion of the thermoplastic component 21 contacting the insert 3 is also welded. The snake member 2 includes a thermoplastic component 21 and a snake member 22. The thermoplastic component 21 surrounds the outer periphery of the snake member 22 to ensure a connection between the thermoplastic component 21 and the snake member 22 and to shield the snake member 22. The melting point of the thermoplastic component 21 is lower than that of the tip 1, so that the tip 1 is less likely to melt when the thermoplastic component 21 is welded to the outer periphery of the tip 1. During operation, the connection process of the endoscope body of the present application is carried out by covering the thermoplastic component 21 of the snake bone 2 on the outer peripheral surface of the tip head 1 and the outer peripheral surface of the insert 3, and fixing it to the tip head 1 and the insert 3 by heating and melting. Compared with the optical adhesive bonding method, the thermoplastic melting method has lower cost, higher efficiency and better reliability.

[0055] In one embodiment, a hot pressing jig 4 is used to heat and weld the portion of the thermoplastic component 21 that contacts the tip 1, including:

[0056] The portion of the thermoplastic component 21 that contacts the tip 1 is placed in the hot pressing jig 4, and the two first side surfaces 23 of the thermoplastic component 21 that are opposite to each other are brought into contact with the hot pressing jig 4. The hot pressing jig 4 is then controlled to heat the two first side surfaces 23 of the thermoplastic component 21, so that the two first side surfaces 23 of the thermoplastic component 21 are welded to the tip 1.

[0057] Then, the thermoplastic component 21 and the tip 1 are rotated along the axis along the first direction so that the two second side surfaces 24 of the thermoplastic component 21 that are separated from each other come into contact with the hot pressing jig 4. Then, the hot pressing jig 4 is controlled to heat the two second side surfaces 24 of the thermoplastic component 21 so that the two second side surfaces 24 of the thermoplastic component 21 are welded to the tip 1.

[0058] The second side surface 24 is located between and connected to the two first side surfaces 23. Specifically, both the first side surface 23 and the second side surface 24 are arcuate surfaces. The outer circumference of the portion of the thermoplastic component 21 that contacts the tip 1 is a circular surface, which is formed by the two first side surfaces 23 and the two second side surfaces 24.

[0059] The heating element of the hot pressing jig 4 can simultaneously contact the two first side surfaces 23 or the two second side surfaces 24 of the thermoplastic component 21, thereby fusing the two first side surfaces 23 or the two second side surfaces 24 of the thermoplastic component 21 to the tip 1, improving melting efficiency. The first side surfaces 23 and the second side surfaces 24 have the same area. After the hot pressing jig 4 has fusing the two first side surfaces 23 of the thermoplastic component 21 to the tip 1, the thermoplastic component 21 and the tip 1 can be rotated 90 degrees along the axis of the first direction, so that the two second side surfaces 24 of the thermoplastic component 21 simultaneously contact the heating element of the hot pressing jig 4, thereby fusing the two second side surfaces 24 to the tip 1. Compared to a method of fusing the outer circumference of the portion of the thermoplastic component 21 in contact with the tip 1 once, the present application uses a second process to achieve better melting of the outer circumference of the portion of the thermoplastic component 21 in contact with the tip 1.

[0060] In one embodiment, a hot pressing jig 4 is used to heat and weld the contact portion of the thermoplastic component 21 and the insert 3, including:

[0061] The portion of the thermoplastic component 21 that contacts the insert 3 is placed in a hot pressing jig 4 , and the two third side surfaces of the thermoplastic component 21 that are opposite to each other are brought into contact with the hot pressing jig 4 . The hot pressing jig 4 is then controlled to heat the two third side surfaces of the thermoplastic component 21 , so that the two third side surfaces of the thermoplastic component 21 are welded to the insert 3 .

[0062] The thermoplastic component 21 and the insert 3 are then rotated about an axis along the first direction, so that the two fourth side surfaces of the thermoplastic component 21 that are opposite to each other come into contact with the hot pressing jig 4. The hot pressing jig 4 is then controlled to heat the two fourth side surfaces of the thermoplastic component 21, so that the two second side surfaces 24 of the thermoplastic component 21 are welded to the insert 3.

[0063] The fourth side surface is located between and connected to the two third side surfaces. Specifically, the third and fourth side surfaces are both arcuate. The outer circumference of the portion of the thermoplastic component 21 that contacts the insert 3 is a circular surface, which is formed by the two third side surfaces and the two fourth side surfaces.

[0064] The heating element of the hot pressing jig 4 can simultaneously contact the two third side surfaces or the two fourth side surfaces to fuse the two third side surfaces or the two fourth side surfaces of the thermoplastic component 21 to the insert 3, improving melting efficiency. The third side surfaces and the fourth side surfaces have the same area. After the hot pressing jig 4 has welded the two third side surfaces of the thermoplastic component 21 to the tip 1, the thermoplastic component 21 and the insert 3 can be rotated 90 degrees along the axis of the third direction, so that the two fourth side surfaces of the thermoplastic component 21 simultaneously contact the heating element of the hot pressing jig 4, thereby fusing the two fourth side surfaces to the insert 3. Compared to a method of melting the outer circumference of the portion of the thermoplastic component 21 in contact with the insert 3 in a single process, the present application uses a second process to achieve better melting of the outer circumference of the portion of the thermoplastic component 21 in contact with the insert 3.

[0065] In one embodiment, the hot pressing jig 4 includes a first jig 41 and a second jig 42. The first jig 41 is provided with a first receiving groove on the side facing the second jig 42, and the first receiving groove has a first heating portion 43. The second jig 42 is provided with a second receiving groove on the side facing the first jig 41, and the second receiving groove has a second heating portion 44. The thermoplastic component 21 can be accommodated in the cavity surrounded by the first receiving groove and the second receiving groove, and is heated and melted by the first heating portion 43 and the second heating portion 44.

[0066] Specifically, the hot pressing jig 4 includes a driving member, with a first jig 41 being in transmission connection with the driving member and capable of moving toward or away from the second jig 42. When the first jig 41, driven by the driving member, moves toward or abuts the second jig 42, the first and second receiving grooves cooperate to form a circular chamber. The thermoplastic component 21 can be accommodated within this circular chamber and heated and melted by the first and second heating sections 43, 44.

[0067] In one embodiment, the chamber has two heating surfaces and two avoidance surfaces 45 arranged opposite to each other. The first heating portion 43 and the second heating portion 44 are respectively arranged on the two heating surfaces. When the first jig 41 and the second jig 42 are attached to each other, the thermoplastic component 21 can be attached to the first heating portion 43 and the second heating portion 44, and there is a gap between the two avoidance surfaces 45.

[0068] Specifically, the circular chamber has two curved heating surfaces and two curved relief surfaces 45. Both the first heating portion 43 and the second heating portion 44 have curved heating surfaces, and the first heating portion 43 and the second heating portion 44 are disposed on the two heating surfaces, respectively. When the thermoplastic component 21 is placed in the circular chamber, its two opposing sides can respectively mate with the first heating portion 43 and the second heating portion 44, with a gap between them and the two relief surfaces 45, facilitating the bonding of the first heating portion 43 and the second heating portion 44 with the opposing sides of the thermoplastic component 21.

[0069] During use, the thermoplastic component 21 is first placed in the second receiving groove, with the lower surface of the thermoplastic component 21 aligned with the curved surface of the second heating portion 44. The driver is then controlled to move the first jig 41 toward the second jig 42 until it abuts the second jig 42, and the upper surface of the thermoplastic component 21 is aligned with the curved surface of the first heating portion 43. The first and second heating portions 43, 44 then heat the upper and lower surfaces of the thermoplastic component 21, fusing the thermoplastic component 21 to the outer surface of the tip 1 or insert 3.

[0070] In one embodiment, the first jig 41 is a metal jig formed by bending a first aluminum plate. This structure is simple overall, and the first jig 41 can be heated by energizing the first aluminum plate, thereby heating and melting the thermoplastic component 21.

[0071] The second jig 42 is a metal jig formed by bending a second aluminum plate. The overall structure is simple, and the second jig 42 can be heated by energizing the second aluminum plate, thereby heating and melting the thermoplastic component 21.

[0072] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0073] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. An endoscope body, characterized in that, It includes a tip, a snake bone member, and an insert member. The tip and the insert member are spaced apart along a first direction; The snake bone member includes a thermoplastic member and a snake bone component. Along the first direction, the two ends of the snake bone component are respectively connected to the tip and the insert member. The thermoplastic member is disposed around the outer peripheral surface of the snake bone component, and the two ends of the thermoplastic member are respectively coated and welded on the outer peripheral surface of the tip and the outer peripheral surface of the insert member.

2. The endoscope body according to claim 1, characterized in that, The cross-sectional shape of the thermoplastic member along a direction perpendicular to the first direction is annular. The outer contour of the cross-section of the tip along a direction perpendicular to the first direction is circular or elliptical. The outer contour of the cross-section of the insert member along a direction perpendicular to the first direction is circular or elliptical.

3. A connection process for an endoscope body, used for the production of the endoscope body according to any one of claims 1-2, comprising the following steps: Connect the two ends of the snake bone component to the tip and the insert member respectively; Put the thermoplastic member on the snake bone component, and the two ends of the thermoplastic member are respectively coated on the outer peripheral surface of the tip and the outer peripheral surface of the insert member; Weld the part of the snake bone member in contact with the tip, and weld the part of the snake bone member in contact with the insert member.

4. The connection process of the endoscope body according to claim 3, characterized in that, The welding of the part of the snake bone member in contact with the insert member includes: Use a hot pressing jig to heat and weld the part of the thermoplastic member in contact with the tip.

5. The connection process of the endoscope body according to claim 4, characterized in that, The use of a hot pressing jig to heat and weld the part of the thermoplastic member in contact with the tip includes: Place the part of the thermoplastic member in contact with the tip in the hot pressing jig, and make the two first side surfaces of the thermoplastic member facing away from each other contact the hot pressing jig; Control the hot pressing jig to heat the two first side surfaces of the thermoplastic member, so that the two first side surfaces of the thermoplastic member are welded to the tip; Rotate the thermoplastic member and the tip around the axis along the first direction, so that the two second side surfaces of the thermoplastic member facing away from each other contact the hot pressing jig; Control the hot pressing jig to heat the two second side surfaces of the thermoplastic member, so that the two second side surfaces of the thermoplastic member are welded to the tip; Wherein, the second side surface is located between the two first side surfaces and is connected to the two first side surfaces.

6. The connection process of the endoscope body according to claim 3, characterized in that, The welding of the part of the snake bone member in contact with the insert member includes: Use a hot pressing jig to heat and weld the part of the thermoplastic member in contact with the insert member.

7. The connection process of the endoscope body according to claim 6, characterized in that, The use of a hot pressing jig to heat and weld the part of the thermoplastic member in contact with the insert member includes: Place the part of the thermoplastic member in contact with the insert member in the hot pressing jig, and make the two third side surfaces of the thermoplastic member facing away from each other contact the hot pressing jig; Control the hot pressing jig to heat the two third side surfaces of the thermoplastic member, so that the two third side surfaces of the thermoplastic member are welded to the insert member; Rotate the thermoplastic member and the insert member around the axis along the first direction, so that the two fourth side surfaces of the thermoplastic member facing away from each other contact the hot pressing jig; Control the hot pressing jig to heat the two fourth side surfaces of the thermoplastic member, so that the two second side surfaces of the thermoplastic member are welded to the insert member; Wherein, the fourth side surface is located between the two third side surfaces and is connected to the two third side surfaces.

8. The connection process of the endoscope body according to any one of claims 4-7, characterized in that, The hot pressing fixture includes a first fixture and a second fixture. A first receiving groove is provided on the side surface of the first fixture facing the second fixture, and a first heating part is disposed in the first receiving groove. A second receiving groove is provided on the side surface of the second fixture facing the first fixture, and a second heating part is disposed in the second receiving groove. The thermoplastic component can be received in a chamber formed by the cooperation of the first receiving groove and the second receiving groove, and is heated and melted by the first heating part and the second heating part.

9. The connection process of the endoscope body according to claim 8, characterized in that, The chamber has two heating surfaces and two avoiding surfaces which are oppositely arranged. The first heating part and the second heating part are respectively disposed on the two heating surfaces. When the first fixture and the second fixture are attached, the thermoplastic component can be attached to the first heating part and the second heating part, and has a gap with the two avoiding surfaces.

10. The connection process of the endoscope body according to claim 1, characterized in that, The melting point of the thermoplastic component is lower than the melting points of the tip end and the insert.

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