Connector for endoscope insertion part and fixing structure of insertion part

Abstract

The present invention provides a connector for an insertion part of an endoscope and a fixing structure of the insertion part, belonging to the technical field of endoscopes. The connector shown includes a fixing part and a mounting part, wherein the fixing part has an operation channel inside, and the operation channel has a first opening on the surface of the fixing part; one end of the mounting part is fixed to the fixing part, and the other end is used to connect the insertion part, wherein the insertion part has an instrument cavity, a traction rope cavity and a wiring cavity; when the mounting part is used to connect to the insertion part, the first opening is connected to the instrument cavity, and the traction rope cavity and the wiring cavity are both connected to the environment outside the fixing part. The present invention separates the instrument cavity from the wiring cavity and the traction rope cavity while fixing the insertion part, thereby avoiding the setting of a connecting pipe outside the instrument cavity, thereby reducing the difficulty of operating the endoscope and improving the operation response speed.

Description

Technical Field

[0001] The present invention belongs to the technical field of endoscopes, and in particular relates to a connector for an insertion part of an endoscope and a fixing structure of the insertion part. Background Art

[0002] An endoscope is a device that detects the body cavity environment by extending an insertion portion with at least lighting and photographing functions into a natural channel of the human body or an opening in the surgical area. By operating a handle located outside the human body, the bending angle of the active bending section located at the front end of the endoscope insertion portion is adjusted, thereby deflecting it in a predetermined direction, helping people obtain observations with a wider visual angle range.

[0003] The insertion part of the endoscope includes an active bending section at the front end and a passive bending section at the rear end. The existing insertion part structures are generally divided into two types, one is a structure in which the active bending section and the passive bending section are integrally formed, and the other is a structure in which the active bending section and the passive bending section are separately made; for the integrally formed insertion part structure, when it is fixed to the handle, the end of the insertion part is surrounded and fixed by the fixed structure as a whole to ensure the stability of the connection of the insertion part. When the instrument cavity of the insertion part is connected to the corresponding equipment, in order not to affect the use of other cavities of the insertion part, such as the wiring cavity and the traction rope cavity, a connecting short tube is arranged between the instrument cavity and the corresponding equipment. Although the connecting short tube can avoid affecting the wiring cavity and the traction rope cavity, in actual use, in order to cooperate with the internal space of the endoscope handle, the connecting short tube is generally a hose, and its existence increases the difficulty of operating the endoscope. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a connector for an endoscope insertion part and a fixing structure of the insertion part, which separates the instrument cavity from the wiring cavity and the traction rope cavity while fixing the insertion part, thereby avoiding the need to set a connecting pipe outside the instrument cavity.

[0005] The present invention is achieved in that:

[0006] A connector for an insertion part of an endoscope comprises a fixing part and a mounting part, wherein the fixing part has an operating channel inside and the operating channel has a first opening on the surface of the fixing part; one end of the mounting part is fixed to the fixing part and the other end is used to connect to the insertion part, wherein the insertion part has an instrument cavity, a traction rope cavity and a wiring cavity; when the mounting part is used to connect to the insertion part, the first opening is connected to the instrument cavity, and the traction rope cavity and the wiring cavity are both connected to the environment outside the fixing part.

[0007] In the above technical solution, the connector is used to fix the insertion part while separating the instrument cavity of the insertion part from other cavities. Related equipment can directly enter the instrument cavity through the operating channel and the first opening for operation, avoiding the need to separately set a connecting short tube between the operating channel and the instrument cavity, thereby reducing the difficulty of operating the endoscope. At the same time, since the connecting short tube is omitted, the response to related operations of the instrument cavity is also faster.

[0008] Furthermore, the mounting portion is provided with a receiving cavity at the end portion connected to the insertion portion, the receiving cavity is communicated with the first opening, the receiving cavity is used to be sleeved outside the insertion portion, and the receiving cavity is directly sleeved and fixed on the end portion of the insertion portion, thereby improving the stability of the insertion portion.

[0009] Furthermore, the accommodating cavity has two open ends along its axial direction, and the side wall of the accommodating cavity has a first gap, both ends of the first gap are connected to the two open ends. The existence of the first gap can make the inner cavity size of the accommodating cavity have a certain range of variation, which can simultaneously achieve the effect of facilitating the installation of the insertion part and stabilizing the fixed position of the insertion part.

[0010] Furthermore, the length direction of the first gap is parallel to the axial direction of the accommodating cavity; or the arc length of the first gap along the radial direction of the accommodating cavity is the width of the first gap, and the central angle corresponding to the width of the first gap is less than 180 degrees. The width of the first gap cannot be too wide to avoid the insertion part falling out of the accommodating cavity.

[0011] Furthermore, along the direction from the accommodating cavity to the fixed part, the first gap is divided into a constant section and an expanded diameter section. The width of the constant section remains unchanged, and the width of the expanded diameter section gradually increases along the direction from the accommodating cavity to the fixed part. After the insertion part is inserted into the accommodating cavity, it needs to be fixed by gluing. The existence of the expanded diameter section can make the side walls of the accommodating cavity on both sides of the first gap as far away from the end of the insertion part as possible, thereby avoiding glue overflowing to the end of the insertion part during gluing and affecting the cavity outlet of the insertion part.

[0012] Furthermore, the outer wall of the accommodating cavity has an adapting surface, and the adapting surface is a planar structure. The adapting surface is mainly used to fit on the inner wall of the handle of the endoscope to prevent the overall position of the connector from moving.

[0013] Furthermore, the fixed part has a connecting end face for fitting with the end face of the insertion part, the first opening is located at the connecting end face, the edge of the connecting end face has a first curved segment and at least one second curved segment, the first curved segment is used to fit with the edge of the routing cavity, and the second curved segment is used to fit with the edge of the traction rope cavity, the first curved segment and the second curved segment are mainly to avoid forming a height difference between the outer wall of the fixed part and the cavity of the insertion part, so as to facilitate subsequent routing work.

[0014] Furthermore, the operating channel includes a connecting section and an operating section, one end of the connecting section is a first opening, and the other end is a second opening, and the second opening is connected to the operating section; the first opening is located in the projection plane of the plane where the second opening is located along the axial direction of the connecting section, and is located inside the second opening, and the second opening is larger than the first opening, so as to facilitate related equipment to enter the instrument cavity through the connecting section.

[0015] Furthermore, the intersection line between the inner wall of the connecting section and the plane where the axis of the connecting section is located is the first intersection line, and the first intersection line is a straight line or a curved structure. Along the direction from the first opening to the second opening, the distance between the first intersection line and the axis of the connecting section gradually increases; the intersection line between the outer wall of the connecting section and the plane where the axis of the connecting section is located is the second intersection line, and the second intersection line is a straight line or a curved structure. Along the direction from the first opening to the second opening, the distance between the second intersection line and the axis of the connecting section gradually increases. The inner wall and the outer wall of the connecting section both have a certain inclined guide. The inner wall can assist the relevant equipment to smoothly reach the first opening from the second opening, and the outer wall can facilitate the layout of the relevant lines in the routing cavity and the traction rope cavity.

[0016] A fixing structure for an endoscope insertion part comprises any of the above-mentioned connectors for an endoscope insertion part, and also comprises an insertion part; the active bending section and the passive bending section of the insertion part are integrally arranged, the accommodating cavity is sleeved on the end of the passive bending section away from the active bending section, the instrument cavity is communicated with the first opening, and while fixing the insertion part, the instrument cavity of the insertion part is separated from other cavities to facilitate subsequent operation and use.

[0017] The beneficial effects of the present invention are:

[0018] 1. In the present invention, when the connector is used to fix the insertion part, it can simultaneously separate the instrument cavity of the insertion part from other cavities, so that the instrument cavity is directly connected to the operation channel, the wiring cavity and the traction rope cavity are connected to the environment outside the connector, and the use of multiple cavities does not affect each other. At the same time, it avoids the situation of setting a connecting short tube between the operation channel and the insertion part, reducing the difficulty of operation when using the endoscope.

[0019] 2. In the present invention, an accommodating cavity is provided to fix the end of the insertion part, thereby improving the stability of the fixing point, and a first gap is provided on the side wall of the accommodating cavity, which facilitates the installation of the insertion part into the accommodating cavity while ensuring the stability of the connection between the accommodating cavity and the insertion part.

[0020] 3. In the present invention, by providing an adapting surface on the outer wall of the accommodating cavity, installation and positioning can be assisted, and the outer wall of the accommodating cavity can better fit with the inner wall of the handle of the endoscope. Since the adapting surface is a planar structure, the rotation of the accommodating cavity can be avoided, thereby improving the overall stability of the equipment.

[0021] 4. In the present invention, a first curved section that fits with the edge of the wiring cavity and a second curved section that fits with the traction rope cavity are arranged on the edge of the connecting end face to eliminate the height difference between the surface of the fixed part and the edge of the cavity, thereby avoiding friction between the pipelines led out of the wiring cavity and the traction rope cavity at the edge of the cavity.

[0022] 5. In the present invention, the second opening of the connecting section is larger than the first opening to facilitate the entry of instruments into the connecting section, and the inner and outer walls of the connecting section are inclined. The inner wall of the connecting section can guide the relevant equipment to smoothly reach the first opening from the second opening, and the outer wall of the connecting section can assist in the smooth layout of the pipelines led out from the wiring cavity and the traction line cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 The overall structure of the connector provided by the embodiment of the present invention is Figure 1 ;

[0025] Figure 2 The overall structure of the connector provided by the embodiment of the present invention is Figure 2 ;

[0026] Figure 3 is a cross-sectional view of a connector provided by an embodiment of the present invention;

[0027] Figure 4 is a structural diagram of an insertion portion provided by an embodiment of the present invention;

[0028] Figure 5 is a schematic diagram of the cooperation between the connector and the insertion part provided by an embodiment of the present invention;

[0029] Figure 6 It is a detailed diagram of the matching structure of the connector and the insertion part provided by an embodiment of the present invention.

[0030] Figure 7 It is a schematic diagram of installing the connector and the inserting part provided by an embodiment of the present invention in the endoscope handle.

[0031] Description of reference numerals:

[0032] 100-fixing part, 110-operating channel, 111-connecting section, 112-operating section, 121-first opening, 122-second opening, 131-first curved section, 132-second curved section, 200-installing part, 210-accommodating cavity, 211-adapting surface, 220-first gap, 221-constant section, 222-expanded diameter section, 300-insertion part, 310-instrument cavity, 320-traction rope cavity, 330-wiring cavity, 400-endoscope handle. DETAILED DESCRIPTION

[0033] The following description provides many different embodiments or examples for implementing different features of the present invention. The components and arrangements described in the following specific examples are only used to simplify the present invention and are only used as examples, not to limit the present invention.

[0034] Example 1

[0035] This embodiment provides a connector for an endoscope insertion portion, Figures 1 to 7 As shown, the connector provided in this embodiment is suitable for use with an endoscope insertion portion 300 that is integrally formed and has multiple cavities, and specifically includes a fixing portion 100 and a mounting portion 200. The fixing portion 100 has an operating channel 110 inside, and the operating channel 110 is generally in a Y-shaped structure, such as Figure 1 and Figure 2 As shown, one end is a first opening 121, which is located on the surface of the fixed part 100, one end is used for a negative pressure suction device, and the last end is used for a biopsy forceps; one end of the mounting part 200 is fixed to the fixed part 100, and the other end is used to connect the insertion part 300, wherein the insertion part 300 has an instrument cavity 310, a traction rope cavity 320 and a wiring cavity 330; when the mounting part 200 is used to connect with the insertion part 300, the first opening 121 is connected to the instrument cavity 310, and the traction rope cavity 320 and the wiring cavity 330 are both connected to the environment outside the fixed part 100.

[0036] While the connector fixes the insertion part 300, the instrument cavity 310 is connected to the operation channel 110, while the wiring cavity 330 and the traction rope cavity 320 are connected to the external environment, thereby separating the instrument cavity 310 from other cavities. Compared with the structure of the prior art in which a connecting short tube is set between the operation channel 110 and the instrument cavity 310, the connector structure provided in this embodiment omits the connecting short tube, and the relevant equipment can directly enter the instrument cavity 310 from the operation channel 110, thereby avoiding the influence of the existence of the connecting short tube on the difficulty of operating the relevant equipment, improving the overall convenience of use of the endoscope, and due to the lack of the connecting short tube, the response of the relevant equipment during operation will be faster. In addition, if a connecting short tube is set between the operation channel 110 and the insertion part 300, the connecting short tube will have two connection positions, and the connection position has the risk of leakage and falling off. Since the connecting short tube is omitted in this embodiment, the risk brought by the connection position is also avoided. Finally, the layout in the endoscope handle 400 can be made more compact.

[0037] When the mounting part 200 is connected to the insertion part 300, it is sleeved on the outside of the insertion part 300. The mounting part 200 has a accommodating cavity 210 at the end for connecting to the insertion part 300. The accommodating cavity 210 is communicated with the first opening 121. When the accommodating cavity 210 is sleeved on the outside of the insertion part 300, the position of the insertion part 300 is adjusted so that the instrument cavity 310 of the insertion part 300 is communicated with the first opening 121, and the wiring cavity 330 and the traction rope cavity 320 are communicated with the external environment.

[0038] In order to improve the stability of the connection between the accommodating cavity 210 and the insertion part 300, the inner diameter of the accommodating cavity 210 should not be too large. However, if the inner diameter of the accommodating cavity 210 is too small, it will be difficult to install the insertion part 300. In order to meet the two requirements of connection stability and ease of assembly at the same time, a first gap 220 is set on the side wall of the accommodating cavity 210, and the two ends of the accommodating cavity 210 along its axial direction are set as open ends, one open end is close to the first opening 121, and the other open end is far away from the first opening 121. Both ends of the first gap 220 are connected to the corresponding open ends. The existence of the first gap 220 can make the inner cavity size of the accommodating cavity 210 have a certain range of variation, which is convenient for installing the insertion part 300, and when the side walls on both sides of the first gap 220 are stretched open by the insertion part 300, they will have a tendency to close, thereby pressing tightly on the outer surface of the insertion part 300 to fix the position of the insertion part 300.

[0039] To facilitate processing, the length direction of the first gap 220 is set parallel to the axial direction of the accommodating cavity 210. Preferably, the arc length of the first gap 220 along the radial direction of the accommodating cavity 210 is the width of the first gap 220. In this embodiment, the central angle corresponding to the width of the first gap 220 is less than 180 degrees. The width of the first gap 220 can be changed, but the central angles corresponding to all widths need to meet the above conditions, and the width of the first gap 220 should not be too large to avoid the insertion part 300 falling from the first gap 220. Generally, the central angle corresponding to the width of the first gap 220 is between 60 degrees and 90 degrees.

[0040] In this embodiment, the first gap 220 has an expanded diameter section 222. Along the direction from the accommodating cavity 210 to the fixing portion 100, the first gap 220 is divided into a constant section 221 and an expanded diameter section 222 in sequence. The width of the constant section 221 is a fixed value and remains unchanged, and the width of the expanded diameter section 222 gradually increases. Specifically, the width of the expanded diameter section 222 gradually increases along the direction from the accommodating cavity 210 to the fixing portion 100. When the accommodating cavity 210 is used to fix the insertion portion 300, it is necessary to use an adhesive process to reinforce it again later. In order to prevent glue from dripping onto the end of the insertion portion 300, the expanded diameter section 222 is provided so that the side walls of the accommodating cavity 210 on both sides of the first gap 220 are as far away from the end of the insertion portion 300 as possible. Specifically, after the first gap 220 is processed, a chamfering process can be directly performed at a position of the first gap 220 close to the end of the insertion portion 300, away from the end of the insertion portion 300. The structure of the formed first gap 220 is as follows: Figure 2 shown.

[0041] The outer wall of the accommodating cavity 210 is provided with an adapting surface 211, and the adapting surface 211 is a planar structure. When the connector is installed in the endoscope handle 400, the adapting surface 211 can fit in the inner wall of the handle, and can play a role in installation and positioning. In this embodiment, the adapting surface 211 can be set on both sides of the first gap 220, such as Figure 1 and Figure 2 As shown, while playing a positioning role, the width of the first gap 220 is limited, which can prevent the inner diameter of the accommodating cavity 210 from changing during use, and further improve the installation stability of the insertion part 300.

[0042] The end surface of the fixing portion 100 that is used to fit with the end surface of the insertion portion 300 is a connecting end surface, the first opening 121 is located on the connecting end surface, and the edge of the connecting end surface has a first curved segment 131 and at least one second curved segment 132, such as Figure 6As shown, the first curved segment 131 is used to fit with the edge of the routing cavity 330, and the second curved segment 132 is used to fit with the edge of the traction rope cavity 320. When the insertion part 300 and the fixing part 100 are fixed, there is no height difference between the first curved segment 131 and the edge of the routing cavity 330, and there is no height difference between the second curved segment 132 and the edge of the traction rope cavity 320. The pipelines led out from the above-mentioned cavities can be directly laid normally. During the laying process, there is no need to worry about the pipelines rubbing against the edge of the routing cavity 330 and being damaged.

[0043] The operating channel 110 in this embodiment includes a connecting section 111 and an operating section 112. One end of the connecting section 111 is a first opening 121, and the other end is a second opening 122. The second opening 122 is connected to the operating section 112. The operating section 112 has an end for use with a negative pressure suction device and an end for use with a biopsy forceps. The first opening 121 is located inside the second opening 122 on the projection surface of the plane where the second opening 122 is located along the axial direction of the connecting section 111.

[0044] The inner and outer side walls of the connecting section 111 are similar to the side wall structure of the truncated cone structure. Figure 1 , Figure 2 and Figure 3 As shown, since the first opening 121 needs to be connected to the instrument cavity 310 of the insertion portion 300, for the convenience of subsequent use, the shape of the first opening 121 is the same as the shape of the cross section of the instrument cavity 310, and the cross section of the instrument cavity 310 is generally an irregular annular structure. Therefore, the inner wall of the connecting section 111 close to the first opening 121 will have a certain depression or protrusion, and the outer wall of the connecting section 111 also has a certain depression or protrusion due to the presence of the first curved section 131 and the second curved section 132; the intersection line between the inner wall of the connecting section 111 and the plane where the axis of the connecting section 111 is located is the first intersection line, and the first intersection line is a straight line or a curved structure, along the first opening 1 21 to the second opening 122, the distance between the first intersection line and the axis of the connecting section 111 gradually increases; the intersection line between the outer wall of the connecting section 111 and the plane where the axis of the connecting section 111 is located is the second intersection line, and the second intersection line is a straight line or a curved structure. Along the direction from the first opening 121 to the second opening 122, the distance between the second intersection line and the axis of the connecting section 111 gradually increases. Under this structure, the inner wall and the outer wall of the connecting section 111 both have a certain inclined guidance. The inner wall can assist in guiding the relevant equipment to smoothly reach the first opening 121 from the second opening 122, and the outer wall can facilitate the layout of the relevant lines in the routing cavity 330 and the traction rope cavity 320.

[0045] Example 2

[0046] This embodiment provides a fixing structure of an endoscope insertion portion, combined with Figures 4 to 7As shown, the endoscope insertion portion connector provided in Example 1 also includes an insertion portion 300, and the structure of the insertion portion 300 is shown in FIG. Figure 4 As shown; the active bending section and the passive bending section of the insertion portion 300 are integrally arranged, the accommodating cavity 210 is sleeved at the end of the passive bending section away from the active bending section, the instrument cavity 310 is connected to the first opening 121, as Figure 5 and Figure 6 As shown, while fixing the insertion part 300, the instrument cavity 310 of the insertion part 300 is separated from other cavities to facilitate subsequent operation and use. The schematic diagram of the fixing structure installed in the endoscope handle 400 is shown in Figure 7 shown.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A connector for an endoscope insertion portion, characterized in that: It comprises a fixing portion (100) and a mounting portion (200), An operating channel (110) is provided inside the fixing portion (100), and the operating channel (110) has a first opening (121) on the surface of the fixing portion (100); One end of the mounting portion (200) is fixed to the fixing portion (100), and the other end is used to connect to the insertion portion (300), wherein the insertion portion (300) has an instrument cavity (310), a traction rope cavity (320), and a wiring cavity (330); When the mounting portion (200) is used to connect with the insertion portion (300), the first opening (121) is in communication with the instrument cavity (310), and the traction rope cavity (320) and the wiring cavity (330) are both in communication with the environment outside the fixing portion (100).

2. The endoscope insertion portion connector according to claim 1, characterized in that: The end of the mounting portion (200) used for connecting to the insertion portion (300) has a receiving cavity (210), the receiving cavity (210) is in communication with the first opening (121), and the receiving cavity (210) is used for being sleeved outside the insertion portion (300).

3. The connector for an endoscope insertion portion according to claim 2, characterized in that: The accommodating cavity (210) has two open ends along its axial direction, and a side wall of the accommodating cavity (210) has a first gap (220), and both ends of the first gap (220) are connected to the two open ends.

4. The endoscope insertion portion connector according to claim 3, characterized in that: The length direction of the first gap (220) is parallel to the axial direction of the accommodating cavity (210); or the arc length of the first gap (220) along the radial direction of the accommodating cavity (210) is equal to the width of the first gap (220), and the central angle corresponding to the width of the first gap (220) is less than 180 degrees.

5. The endoscope insertion portion connector according to claim 4, characterized in that: Along the direction from the accommodating cavity (210) to the fixing portion (100), the first gap (220) is divided into a constant section (221) and an expanded diameter section (222); the width of the constant section (221) remains constant, and the width of the expanded diameter section (222) gradually increases along the direction from the accommodating cavity (210) to the fixing portion (100).

6. The connector for an endoscope insertion portion according to claim 2, characterized in that: The outer side wall of the accommodating cavity (210) has an adapting surface (211), and the adapting surface (211) is a planar structure.

7. The endoscope insertion portion connector according to claim 1, characterized in that: The fixing portion (100) has a connecting end surface for fitting with an end surface of the inserting portion (300), and the first opening (121) is located on the connecting end surface. The edge of the connecting end surface comprises a first curved segment (131) and at least one second curved segment (132), the first curved segment (131) being used to fit with the edge of the routing cavity (330), and the second curved segment (132) being used to fit with the edge of the traction rope cavity (320).

8. The endoscope insertion portion connector according to claim 1, characterized in that: The operating channel (110) comprises a connecting section (111) and an operating section (112); one end of the connecting section (111) is the first opening (121), and the other end is a second opening (122); the second opening (122) is in communication with the operating section (112); A projection plane of the first opening (121) along the axial direction of the connecting section (111) on the plane where the second opening (122) is located is located inside the second opening (122).

9. The endoscope insertion portion connector according to claim 8, characterized in that: An intersection line between the inner side wall of the connecting section (111) and the plane where the axis of the connecting section (111) is located is a first intersection line, the first intersection line is a straight line or a curved line structure, and along the direction from the first opening (121) to the second opening (122), the distance between the first intersection line and the axis of the connecting section (111) gradually increases; The intersection line between the outer side wall of the connecting section (111) and the plane where the axis of the connecting section (111) is located is a second intersection line, and the second intersection line is a straight line or a curved line structure. Along the direction from the first opening (121) to the second opening (122), the distance between the second intersection line and the axis of the connecting section (111) gradually increases.

10. A fixing structure of an endoscope insertion portion, characterized in that: The connector for an insertion portion of an endoscope according to any one of claims 2 to 6, further comprising an insertion portion (300); The active bending section and the passive bending section of the insertion portion (300) are integrally arranged, the accommodating cavity (210) is sleeved on the end of the passive bending section away from the active bending section, and the instrument cavity is in communication with the first opening (121).

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