A cannula fixing member, an insertion portion, and an endoscope

Abstract

The utility model discloses a sleeve fixing part, insertion part and endoscope relates to medical instrument technical field. The sleeve fixing part of the utility model, including the body, the passage for sleeve is crossed in the body, the body still is fixedly connected with the far -end of sleeve, be provided with first aperture on the body, and first aperture is located at least partially in the far -end end of sleeve, and the width of first aperture is along the body circumferential direction greater than the outer diameter of sleeve. The sleeve fixing part of the utility model, when the traction rope is inserted into the sleeve from the far -end end of insertion part, can observe the opening of the far -end end of sleeve through first aperture, so that operator can accurately insert the traction rope into the sleeve, and it is favorable to reduce the assembly difficulty of traction rope, save time and effort.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a cannula fixation component, an insertion part, and an endoscope. Background Technology

[0002] An endoscope is a commonly used medical device that can directly enter human cavities for examination, providing doctors with comprehensive diagnostic information. An endoscope typically includes: an insertion part for insertion into the body, a handle for controlling the bending of the insertion part's tip, and a display device for showing the internal environment of the body's natural cavities. Through the coordination of these three parts, an endoscope can achieve visualization of the human body's interior, exploration of lesions, and treatment.

[0003] The insertion section includes a snake-bone assembly. The distal end of the snake-bone assembly is connected to a traction rope, and the proximal end of the traction rope is connected to an actuating element on the handle side. By controlling the actuating element, the movement of the traction rope can be controlled, thereby controlling the bending or straightening of the snake-bone assembly. In related technologies, a sleeve is also provided outside the traction rope. The sleeve is a spring tube or a metal tube, extending from the handle side to the proximal end of the snake-bone assembly, the distal end of the insertion tube, or an adapter tube (used to connect the snake-bone assembly and the insertion tube), and is fixedly connected to the proximal end of the snake-bone assembly, the distal end of the insertion tube, or the adapter tube.

[0004] However, the inventors discovered that during the assembly of the traction rope, the inner diameter of the sleeve is relatively small, and the walls of the snake-bone assembly, insertion tube, or adapter tube obstruct the distal end of the sleeve, often resulting in blind insertion by the operator. This makes the assembly of the traction rope difficult, time-consuming, and labor-intensive. Therefore, providing an insertion part that facilitates traction rope assembly is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] This utility model discloses a sleeve fixing component, an insertion part, and an endoscope to solve the technical problem in the related art where the insertion part has a large difficulty in assembling the traction rope.

[0006] To solve the above problems, the present invention adopts the following technical solution:

[0007] The first aspect of this utility model discloses a sleeve fixing component.

[0008] The present invention relates to a cannula fixing component for use in the insertion part of an endoscope. The cannula fixing component includes a body having a channel for the cannula to pass through, and the body is also fixedly connected to the distal end of the cannula. The body is provided with a first opening, which is at least partially located at the distal end of the cannula, and the width of the first opening along the circumferential direction of the body is greater than the outer diameter of the cannula.

[0009] The second aspect of this utility model discloses an insertion part.

[0010] The insertion part of this utility model includes the sleeve fixing member described in any one of the technical solutions of this utility model.

[0011] The third aspect of this utility model discloses an endoscope.

[0012] The endoscope of this utility model includes the insertion part described in any of the technical solutions of this utility model.

[0013] The technical solution adopted in this utility model can achieve the following beneficial effects:

[0014] The sleeve fixing component of this utility model is used to fix the distal end of the sleeve. The main body of the sleeve fixing component is provided with a first opening. When the traction rope is inserted into the sleeve from the distal end of the insertion part, since the first opening is at least partially located at the distal end of the sleeve, and the width of the first opening along the circumferential direction of the main body is greater than the outer diameter of the sleeve, the opening of the distal end of the sleeve can be observed through the first opening. This allows the operator to accurately insert the traction rope into the sleeve, which helps to reduce the difficulty of assembling the traction rope and saves time and effort.

[0015] As can be seen, the sleeve fixing component of this utility model solves the technical problem of the insertion part in related technologies having a large circumferential width by opening a first opening on the body, which makes the assembly of the traction rope difficult. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the endoscope used in an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the insertion section according to the first embodiment of this application;

[0019] Figure 3 yes Figure 2 Enlarged view of section A;

[0020] Figure 4 This is a schematic diagram of the insertion part according to the second embodiment of this application;

[0021] Figure 5 yes Figure 4 Enlarged view of section B;

[0022] Figure 6This is a schematic diagram of the insertion part according to the third embodiment of this application;

[0023] Figure 7 yes Figure 6 Enlarged view of section C;

[0024] Figure 8 This is a schematic diagram of the sleeve assembly process according to an embodiment of this application;

[0025] Figure 9 yes Figure 8 Enlarged view of section D;

[0026] Figure 10 This is a schematic diagram of the insertion part according to the fourth embodiment of this application;

[0027] Figure 11 yes Figure 10 Enlarged view of section E in the middle;

[0028] Figure 12 This is a schematic diagram of the insertion section according to the fifth embodiment of this application;

[0029] Figure 13 yes Figure 10 Enlarged view of section F in the middle.

[0030] In the diagram: 10, Insertion part; 111, First opening; 112, Reinforcing part; 113, Second opening; 120, Sleeve; 130, Traction rope; 140, Snake bone assembly; 141, Tail segment snake bone; 150, Insertion tube; 160, Adaptor tube; 170, Head end assembly; 180, First core rod; 181, Groove; 190, Second core rod; 20, Handle. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0033] In the various embodiments of this application, "near end" and "far end" refer to the distance of each component from the user in the usage environment. The end closer to the user is designated as the "near end", and the end farther from the user is designated as the "far end".

[0034] In related technologies, the distal end of the sleeve is welded to the tail section of the snake-bone assembly. During traction rope assembly, it is typically inserted into the snake-bone assembly from the distal end of the insertion part, and then inserted into the sleeve from the distal end of the sleeve. The installation accuracy of the traction rope is directly related to the bending accuracy of the snake-bone assembly. Therefore, in related technologies, a positioning hole is provided on the tail section of the snake-bone to position the sleeve. To maintain the positioning function of the positioning hole, its opening size is usually small. During traction rope assembly, the wall of the tail section of the snake-bone obstructs the distal end of the sleeve. Even with a positioning hole on the tail section of the snake-bone, the small size of the hole prevents the operator from clearly observing the sleeve's entrance, resulting in blind insertion and making traction rope assembly difficult, time-consuming, and labor-intensive.

[0035] Therefore, this application provides a first opening with a large circumferential width on the sleeve fixing component. The opening at the distal end of the sleeve can be observed through the first opening, so that the operator can accurately insert the traction rope into the sleeve, which helps to reduce the difficulty of assembling the traction rope and saves time and effort.

[0036] The following is in conjunction with the appendix Figures 1 to 13 The present application provides a detailed description of the cannula fixation component, insertion part, and endoscope through specific embodiments and application scenarios.

[0037] The first aspect of this embodiment describes the sleeve fixing component in detail.

[0038] The cannula fixing component of this embodiment is used in the insertion part of an endoscope. A traction rope 130 is provided inside the insertion part, and a cannula 120 is sleeved on the outside of the traction rope 130. The cannula fixing component is fixedly connected to the distal end of the cannula 120.

[0039] In some embodiments, the sleeve fixing member includes a body having a channel through which the sleeve 120 passes, and the body is also fixedly connected to the distal end of the sleeve 120, such as... Figure 2 and Figure 3 As shown. For example, the body and the distal end of the sleeve 120 are fixedly connected by welding.

[0040] In some embodiments, a first opening 111 is provided on the body, such as... Figure 2 and Figure 3 As shown. The first opening 111 penetrates the wall of the body. The first opening 111 is at least partially located at the distal end of the sleeve 120. The width of the first opening 111 in the circumferential direction of the body is greater than the outer diameter of the sleeve 120. This allows a gap to be maintained between the distal end of the sleeve 120 and the body, and also allows a gap to be maintained between at least one side of the distal end of the sleeve 120 and the body, thereby preventing the body from obstructing the opening at the distal end of the sleeve 120. Figure 2 and Figure 3 As shown.

[0041] For example, the distal end face of the sleeve 120 is flush with the proximal end face of the first opening 111, such as... Figure 2 and Figure 3 As shown; or the distal end face of the sleeve 120 is located at the proximal end of the proximal end face of the first opening 111. Both of these methods ensure that the first opening 111 is completely located at the distal end of the sleeve 120. For example, the distal end face of the sleeve 120 is located within the first opening 111, in which case the first opening 111 is partially located at the distal end of the sleeve 120.

[0042] Preferably, the width of the first opening 111 along the circumferential direction of the body is 2 to 10 times the outer diameter of the sleeve 120. For example, the width of the first opening 111 along the circumferential direction of the body is 2, 3, 4, 5, 6, 7, 8, 9, or 10 times the outer diameter of the sleeve 120. However, it is not limited to this; the width of the first opening 111 along the circumferential direction of the body may also have a larger dimension.

[0043] In this embodiment of the sleeve fixing component, when the traction rope 130 is inserted into the sleeve 120 from the distal end of the insertion part, since the first opening 111 is at least partially located at the distal end of the sleeve 120, and the width of the first opening 111 in the circumferential direction of the body is greater than the outer diameter of the sleeve 120, the opening at the distal end of the sleeve 120 can be observed through the first opening 111, so that the operator can accurately insert the traction rope 130 into the sleeve 120, which helps to reduce the assembly difficulty of the traction rope 130 and saves time and effort.

[0044] In some embodiments, a positioning part is provided on the first opening 111 for positioning the sleeve 120. Exemplarily, the positioning part is a mark or marking (not shown in the figure) provided on the proximal and / or distal sidewall of the first opening 111. Exemplarily, the first opening 111 is a circular hole, an elliptical hole, a square hole, a rhombus hole, or a heart-shaped hole. When the first opening 111 is an elliptical hole, a rhombus hole, or a heart-shaped hole, a specific position on the first opening 111 (such as the apex of a rhombus) can also be formed as a positioning part.

[0045] In this embodiment, the sleeve fixing component is provided with a positioning part on the first opening 111. When assembling the traction rope 130, the assembly difficulty of the traction rope 130 can be reduced by the first opening 111, and the sleeve 120 can also be positioned by the first opening 111 to ensure the installation accuracy of the traction rope 130.

[0046] In some embodiments, a reinforcing portion 112 is also provided on the main body. For example, the reinforcing portion 112 may be a positioning block or an adapter ring disposed on the main body, which is used to connect and cooperate with the insertion tube 150 or the adapter tube 160, such as... Figure 8 and Figure 9 As shown. However, this is not a limitation; the reinforcing portion 112 can also be a reinforcing rib provided on the body. Preferably, the first opening 111 and the reinforcing portion 112 are distributed along the axial direction of the body. For example, the first opening 111 is located at the distal end of the reinforcing portion 112, and the central axis of the first opening 111 coincides with the central axis of the reinforcing portion 112.

[0047] Because the size of the first opening 111 is relatively large, the strength of the main body is reduced. In this embodiment, the sleeve fastener distributes the first opening 111 and the reinforcing part 112 along the axial direction of the main body. The reinforcing part 112 can compensate for the strength reduction caused by the first opening 111, thereby avoiding the hidden danger of the main body being easily damaged due to excessively low strength.

[0048] In some embodiments, a second opening 113 is also provided on the body, such as... Figure 2 and Figure 3 As shown. The width of the second opening 113 along the circumferential direction of the body is smaller than the width of the first opening 111 along the circumferential direction of the body, as shown. Figure 3 As shown. For the same traction rope 130, the number of second openings 113 can be one or more. When there are two or more second openings 113, the multiple second openings 113 are distributed along the axial direction of the body.

[0049] Because the width of the first opening 111 along the circumferential direction of the body is relatively large, it is not convenient to position the sleeve 120 through the first opening 111. In this embodiment, the sleeve fixing component is also provided with a second opening 113 on the body. Since the width of the second opening 113 along the circumferential direction of the body is smaller than the width of the first opening 111 along the circumferential direction of the body, the sleeve 120 can be positioned through the second opening 113 to ensure the installation accuracy of the traction rope 130.

[0050] In some embodiments, for the same traction rope 130, when there is only one second opening 113, the second opening 113 is located at the distal end of the first opening 111, such as... Figure 2 and Figure 3 As shown; or the second opening 113 is located on the proximal side of the first opening 111, as shown. Figure 6 and Figure 7 As shown. For the same traction rope 130, when there are two or more second openings 113, all the second openings 113 may be located on the distal side of the first opening 111; or all the second openings 113 may be located on the proximal side of the first opening 111; or the second openings 113 may be partially located on the distal side of the first opening 111 and partially located on the proximal side of the first opening 111, such as... Figure 4 and Figure 5 As shown. For example, for the same traction rope 130, when there are two or more second openings 113, the diameter of each second opening 113 can be the same or different.

[0051] like Figure 6 and Figure 7 As shown, in this embodiment of the sleeve fixing component, when the second opening 113 is located near the first opening 111, the second opening 113 can not only be used to position the sleeve 120, but also to weld the body to the sleeve 120 through the second opening 113, thereby further enhancing the stability of the sleeve 120 fixing. For example, the weld points can be distributed along the circumferential direction of the second opening 113.

[0052] For example, the width of the second opening 113 along the circumferential direction of the body is 1 to 1.2 times the outer diameter of the sleeve 120. Preferably, the width of the second opening 113 along the circumferential direction of the body is the same as the outer diameter of the sleeve 120. When the sleeve 120 is located at the second opening 113, if there is no gap between the two sides of the sleeve 120 and the second opening 113, it indicates that the sleeve 120 is aligned with the second opening 113.

[0053] For example, the second opening 113 can be a circular hole, an elliptical hole, a square hole, a rhombus-shaped hole, or a heart-shaped hole. The second opening 113 is not limited to being positioned by its width along the circumferential direction of the body. Similar to the first opening 111, it can also be positioned by a mark or line located on the second opening 113; it can also be positioned by a special position of the second opening 113 (such as the vertex of a rhombus).

[0054] like Figure 8 and Figure 9 As shown, when the second opening 113 is located at the distal end of the first opening 111, a first core rod 180 is pre-inserted into the snake-bone assembly 140, which provides support for the snake-bone assembly 140. The first core rod 180 has a groove 181 for placing the sleeve 120. Further, a second core rod 190 is inserted into the sleeve 120, and the second core rod 190 and / or the sleeve 120 are moved to the second opening 113, where they are positioned. After the second core rod 190 and / or the sleeve 120 are positioned, the sleeve 120 is moved proximally to the first opening 111, and then fixed. This ensures the accuracy of the traction rope 130 after assembly.

[0055] like Figures 4-7 As shown, when the second opening 113 is located near the first opening 111, the sleeve 120 can be positioned directly through the second opening 113.

[0056] In some embodiments, the cannula retainer is a serpentine segment proximal to the serpentine assembly 140. Preferably, the cannula retainer is a tail segment 141, such as... Figures 2-7 As shown. At this time, the first opening 111 is located on the tail section 141, and the distal end of the sleeve 120 is fixedly connected to the tail section 141.

[0057] In some embodiments, the sleeve fixing member is an insertion tube 150, which is connected to the distal end of the snake bone assembly 140. In this case, the first opening 111 is located on the insertion tube 150, and the distal end of the sleeve 120 is fixedly connected to the insertion tube 150, such as... Figure 10 and Figure 11 As shown.

[0058] In some embodiments, the sleeve fixing member is an adapter tube 160, which is used to connect the insertion tube 150 and the snake bone assembly 140. In this case, the first opening 111 is located on the adapter tube 160, and the distal end of the sleeve 120 is fixedly connected to the adapter tube 160, such as... Figure 12 and Figure 13 As shown.

[0059] The second aspect of this embodiment will be described in detail regarding the insertion part.

[0060] The insertion part of this embodiment includes the sleeve fixing member of any of the technical solutions in this embodiment.

[0061] For example, when the cannula fixing member is the tail segment 141 of the snake bone assembly 140 or the insertion tube 150, the insertion part includes at least the snake bone assembly 140 and the insertion tube 150. The insertion tube 150 is located at the proximal end of the snake bone assembly 140 and is fixedly connected to the snake bone assembly 140, such as... Figures 2-7 , Figure 10 and Figure 11 As shown. Not limited to this, the insertion part may also include an adapter tube 160, the two ends of which are fixedly connected to the insertion tube 150 and the snake bone assembly 140, respectively.

[0062] For example, when the sleeve fixing component is an adapter tube 160, the insertion part includes a snake-bone assembly 140, an insertion tube 150, and an adapter tube 160. The insertion tube 150 is located at the proximal end of the snake-bone assembly 140, and both ends of the adapter tube 160 are fixedly connected to the insertion tube 150 and the snake-bone assembly 140, respectively. Figure 12 and Figure 13 As shown.

[0063] The insertion section may also include a head assembly 170, an instrument tube, a wire harness, and other structures, such as... Figure 2 As shown. The head assembly 170 of the insertion section, the instrument tube, the wire harness, and other structures can be the same as those in the prior art, and will not be described in detail here.

[0064] The insertion part of this embodiment includes the sleeve fixing component of any of the technical solutions in this embodiment, which helps to reduce the assembly difficulty of the traction rope 130.

[0065] The third aspect of this embodiment provides a detailed description of the endoscope.

[0066] The endoscope of this embodiment includes the insertion part 10 of any of the technical solutions in this embodiment, such as... Figure 1 As shown. Exemplarily, the endoscope also includes a handle 20 connected to the proximal end of the insertion portion 10, as... Figure 1 As shown. The remaining structure of the endoscope is the same as that of existing technology and will not be described in detail here.

[0067] The endoscope in this embodiment may be a digestive endoscope, bronchoscope, nephroscope, esophagoscope, gastroscope, colonoscope, otoscope, rhinoscope, oral endoscope, laryngoscope, colposcope, laparoscope, arthroscope, etc. This embodiment does not impose specific restrictions on the type of endoscope.

[0068] The endoscope of this embodiment, including the insertion part of any of the technical solutions in this embodiment, has the advantages of easy assembly and time and labor saving of the traction rope 130.

[0069] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0070] Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0071] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A cannula fixing component for use in the insertion portion of an endoscope, characterized in that, The sleeve fixing component includes a body having a channel through which the sleeve (120) passes, and the body is also fixedly connected to the distal end of the sleeve (120). The body is provided with a first opening (111), which is at least partially located at the distal end of the sleeve (120), and the width of the first opening (111) along the circumferential direction of the body is greater than the outer diameter of the sleeve (120).

2. The sleeve fixing member according to claim 1, characterized in that, The width of the first opening (111) along the circumferential direction of the body is 2 to 10 times the outer diameter of the sleeve (120).

3. The sleeve fixing member according to claim 1, characterized in that, A positioning part is provided on the first opening (111), and the positioning part is used to position the sleeve (120); And / or, the body is further provided with a reinforcing part (112), and the first opening (111) and the reinforcing part (112) are distributed along the axial direction of the body.

4. The sleeve fixing member according to any one of claims 1 to 3, characterized in that, The body is also provided with a second opening (113), the width of the second opening (113) along the circumferential direction of the body is smaller than the width of the first opening (111) along the circumferential direction of the body.

5. The sleeve fixing member according to claim 4, characterized in that, The second opening (113) is located on the distal side of the first opening (111); And / or, the second opening (113) is located on the proximal side of the first opening (111).

6. The sleeve fixing member according to claim 4, characterized in that, The width of the second opening (113) along the circumferential direction of the body is 1 to 1.2 times the outer diameter of the sleeve (120).

7. The sleeve fixing member according to claim 4, characterized in that, The first opening (111) and the second opening (113) are circular holes, elliptical holes, square holes, rhomboid holes or heart-shaped holes.

8. The sleeve fixing member according to claim 1, characterized in that, The sleeve fixing member is the snake bone segment at the proximal end of the snake bone assembly (140); Alternatively, the sleeve fixing member is an insertion tube (150) connected to the distal end of the snake bone assembly (140); Alternatively, the sleeve fixing component is an adapter (160) for connecting the insertion tube (150) and the snake bone assembly (140).

9. An insertion part, characterized in that, Includes the sleeve fastener as described in any one of claims 1 to 8.

10. An endoscope, characterized in that, Includes the insertion portion as described in claim 9.

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