Endoscope and front end shell and insertion part thereof

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to an endoscope and a front end shell and an insertion part thereof. The front end shell is used for being connected with the driving bending section, the driving bending section can be sleeved with the front end shell, a positioning part is arranged on the inner circumferential face of the front end shell, and the positioning part is used for being in positioning fit with a matching part of the driving bending section, so that the front end shell and the driving bending section are in limiting fit in the circumferential direction and the first direction of the front end shell respectively. The first direction is a direction extending from the distal end of the front end housing to the proximal end of the front end housing. The front end shell is arranged outside the active bending section in a sleeving manner, so that the size of the inner hole of the front end shell is larger than the external size of the active bending section, and layout of parts in the front end shell is facilitated; the positioning part is arranged on the inner circumferential face of the front end shell, so that the matching position of the positioning part and the matching part is located in the front end shell, the skin of the active bending section cannot cover the matching position, the skin can be prevented from being clamped by the matching position, and damage to the skin is avoided.

Description

Technical Field

[0001] The present application belongs to the technical field of medical devices, and specifically relates to an endoscope and a front end shell and an insertion part thereof. Background Art

[0002] With the continuous development of medical technology, endoscopes have been widely used in the diagnosis and treatment of diseases. When using an endoscope, the insertion part of the endoscope can be inserted into the patient's body, and the image information of the target part (such as a lesion) can be obtained through a camera disposed in the front end shell of the insertion part.

[0003] In the related art, the insertion part is provided with a camera module and an instrument tube for inserting a treatment instrument or sucking tissue fluid, and the outlets of the camera module and the instrument tube are arranged in the front end shell. However, the volume of the accommodation space in the front end shell in the related art is relatively small, which is not conducive to the layout of the camera module, the instrument tube and other components. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide an endoscope and its front end shell and insertion part, which can solve the problem of the small volume of the accommodation space in the front end shell in the related art.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, an embodiment of the present application provides a front end shell of an endoscope, which is used to connect an active bending section. The front end shell can be sleeved on the outside of the active bending section. The inner circumferential surface of the front end shell is provided with a positioning portion, which is used to position and cooperate with the matching portion of the active bending section, so that the front end shell and the active bending section are respectively positioned and matched in the circumferential direction and the first direction of the front end shell.

[0007] The first direction is a direction extending from the distal end of the front end shell to the proximal end of the front end shell.

[0008] In a second aspect, an embodiment of the present application provides an insertion portion of a endoscope, comprising an active bending section and the above-mentioned front end shell, the front end shell is sleeved on the outside of the active bending section, and a matching portion is provided at the distal end of the active bending section.

[0009] In a third aspect, an embodiment of the present application provides an endoscope, comprising the above-mentioned insertion portion.

[0010] In the embodiment of the present application, a positioning portion is provided on the inner circumferential surface of the front end shell. When the front end shell is sleeved on the outside of the active bending section, the positioning portion and the matching portion of the active bending section are positioned and matched, so that the front end shell and the active bending section are matched in the circumferential upper limit position of the front end shell, thereby preventing the active bending section from rotating and making the active bending section located in a preset installation position; and the positioning portion and the matching portion are positioned and matched so that the front end shell and the active bending section can also be matched in the upper limit position in the first direction. In this way, when the front end shell and the active bending section are assembled, the front end shell can be prevented from moving a large stroke relative to the active bending section, causing the components in the front end shell to hit the distal end of the active bending section, thereby avoiding damage to the components in the front end shell.

[0011] In addition, since the front end shell is sleeved on the outside of the active bending section, the inner hole size of the front end shell is larger than the outer size of the active bending section, thereby increasing the volume of the accommodating space inside the front end shell, which is beneficial to the layout of the components inside the front end shell; and the positioning portion of the embodiment of the present application is arranged on the inner circumferential surface of the front end shell, so when the positioning portion and the mating portion are positioned and mated, the mating point of the positioning portion and the mating portion is also located inside the front end shell, so the skin of the active bending section will not cover the mating point of the positioning portion and the mating portion, thereby avoiding the skin being clamped at the mating point of the positioning portion and the mating portion, thereby avoiding damage to the skin. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the front end housing disclosed in the embodiment of the present application;

[0013] Figure 2 It is a schematic diagram of assembling the front end housing and the active bending section disclosed in the embodiment of the present application;

[0014] Figure 3 This is a partial structural schematic diagram of the insertion part disclosed in the embodiment of the present application.

[0015] Description of reference numerals:

[0016] 100, front end shell; 101, second clamping space; 110, positioning portion; 111, extension protrusion; 200, active bending section; 210, matching portion; 300, camera module; 400, instrument tube. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0018] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0019] In the related art, the front end shell is assembled to the distal end of the active bending section. In order to prevent the active bending section from deviating from the preset installation position due to the rotation of the active bending section during the assembly of the front end shell, the related art provides positioning teeth on the outer peripheral surface of the front end shell and provides a notch at the end of the active bending section. When the active bending section is sleeved on the outside of the front end shell, the positioning teeth and the notch are clamped together to prevent the active bending section from rotating.

[0020] The inventors have found through research that the positioning teeth in the related art are arranged on the outer peripheral surface of the front end shell, and therefore the active bending section needs to be sleeved on the outside of the front end shell so that the positioning teeth and the notch can be engaged, but this will make the outer dimension of the front end shell smaller than the inner hole dimension of the active bending section, which will reduce the volume of the accommodation space in the front end shell; in addition, the inventors have also found that since the positioning teeth in the related art are arranged on the outer peripheral surface of the front end shell, when the positioning teeth and the notch are engaged, the mating part of the positioning teeth and the notch is also located on the outside of the front end shell, so when the active bending section is provided with a skin, the skin will cover the mating part of the positioning teeth and the notch, and since the mating part has a gap, the mating part may clamp the skin during the use of the endoscope, thereby causing damage to the skin.

[0021] In view of this, the endoscope and its front end shell and insertion part provided in the embodiments of the present application are described in detail below in combination with the accompanying drawings through specific embodiments and their application scenarios.

[0022] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of the endoscope and its components relative to the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0023] like Figure 1As shown, an embodiment of the present application discloses a front end shell of an endoscope, which is used to connect an active bending section 200. The front end shell 100 can be sleeved on the outside of the active bending section 200. The inner circumferential surface of the front end shell 100 is provided with a positioning portion 110, and the positioning portion 110 is used to position and cooperate with the matching portion 210 of the active bending section 200, so that the front end shell 100 and the active bending section 200 are respectively limited in position and cooperate in the circumferential direction of the front end shell 100 and in the first direction, wherein the first direction is a direction extending from the distal end of the front end shell 100 to the proximal end of the front end shell 100.

[0024] In the embodiment of the present application, a positioning portion 110 is provided on the inner circumferential surface of the front end shell 100. When the front end shell 100 is sleeved on the outside of the active bending section 200, the positioning portion 110 is positioned and matched with the matching portion 210 of the active bending section 200, so that the front end shell 100 and the active bending section 200 are matched in the circumferential upper limit position of the front end shell 100, thereby preventing the active bending section 200 from rotating and making the active bending section 200 located in a preset installation position; and the positioning portion 110 and the matching portion 210 are positioned and matched, and the front end shell 100 and the active bending section 200 are matched in the upper limit position in the first direction. In this way, when the front end shell 100 and the active bending section 200 are assembled, the front end shell 100 can be prevented from moving a large stroke relative to the active bending section 200, causing the components in the front end shell 100 to hit the distal end of the active bending section 200, thereby avoiding damage to the components in the front end shell 100.

[0025] In addition, since the front end shell 100 is sleeved on the outside of the active bending section 200, the inner hole size of the front end shell 100 is larger than the outer size of the active bending section 200, thereby increasing the volume of the accommodating space inside the front end shell 100, which is beneficial to the layout of the components inside the front end shell 100; and the positioning portion 110 of the embodiment of the present application is arranged on the inner circumferential surface of the front end shell 100, so when the positioning portion 110 and the matching portion 210 are positioned and matched, the matching point of the positioning portion 110 and the matching portion 210 is also located inside the front end shell 100, so the skin of the active bending section will not cover the matching point of the positioning portion 110 and the matching portion 210, thereby avoiding the skin being clamped at the matching point of the positioning portion 110 and the matching portion 210, thereby avoiding damage to the skin.

[0026] In an optional embodiment, the positioning portion 110 is a positioning protrusion, and the positioning protrusion extends along the axial direction of the front end shell 100. In this embodiment, the positioning portion 110 is a positioning protrusion extending along the axial direction of the front end shell 100, which can increase the cross-sectional area of ​​the front end shell 100, thereby increasing the structural strength of the front end shell 100; in addition, the positioning protrusion can also guide the glue entering the front end shell 100 so that the glue reaches the distal end of the front end shell 100. Of course, the positioning portion 110 can also be a positioning recess, and the present application does not limit the specific structure of the positioning portion 110.

[0027] In an optional embodiment, the number of the positioning protrusions is at least two, the front end housing 100 has a first side and a second side that are arranged opposite to each other, the first side and the second side are both provided with positioning protrusions, and a first clamping space for clamping the instrument tube 400 is formed between the positioning protrusion on the first side and the positioning protrusion on the second side. Specifically, the first side and the second side here can be the two sides of the arrangement path of the camera module 300 and the instrument tube 400 described below.

[0028] In this embodiment, the number of the positioning protrusions is at least two, so that the cross-sectional area of ​​the front end shell 100 can be further increased, so as to further increase the structural strength of the front end shell 100; and the positioning protrusions are distributed on the first side and the second side opposite to each other of the front end shell 100, and a first clamping space is formed between the positioning protrusions located on the first side and the positioning protrusions located on the second side. When the instrument tube 400 is assembled into the front end shell 100, the positioning protrusions located on the first side and the positioning protrusions located on the second side can contact the two opposite sides of the instrument tube 400 respectively, so when the glue is injected, the positioning protrusions can limit the instrument tube 400, thereby preventing the instrument tube 400 from moving in the radial direction. It should be noted that the number of the positioning protrusions located on the first side and the number of the positioning protrusions located on the second side can be equal or unequal.

[0029] And / or, in an optional embodiment, the positioning protrusion extends to the distal end of the front end shell 100, which can increase the cross-sectional area and structural strength of most or even all parts of the front end shell 100 along its own axial direction.

[0030] Optionally, the mating portion 210 may be a positioning recess extending to the inner circumferential surface of the active bending section 200, and the portion where the positioning protrusion and the positioning recess are positioned and mated may not protrude from the inner circumferential surface of the active bending section 200. In this case, the portion is completely located within the positioning recess. Since the active bending section 200 is sleeved on the inner wall of the front end shell 100, when the active bending section 200 is deformed inwardly, the positioning recess will also be deformed inwardly, which will cause the positioning recess to move in a direction away from the inner circumferential surface of the front end shell 100, which may cause the positioning recess and the positioning protrusion to be out of positioning fit.

[0031] In an optional embodiment, the matching portion 210 is a positioning recess extending to the inner circumference of the active bending section 200, and the portion where the positioning projection is positioned and matched with the positioning recess protrudes from the inner circumference of the active bending section 200. Optionally, the positioning recess may be a notch provided on the distal end surface of the active bending section 200; or the positioning recess may be a blind groove provided on the inner circumference of the active bending section 200, and the blind groove extends to the distal end surface of the active bending section 200.

[0032] In this embodiment, the portion where the positioning protrusion and the positioning recess are positioned and matched protrudes from the inner circumferential surface of the active bending section 200. Therefore, even when the active bending section 200 is deformed inwardly to move the positioning recess in a direction away from the inner circumferential surface of the front end shell 100, the positioning recess is not easy to be out of position with the positioning protrusion.

[0033] In order to prevent the positioning recess and the positioning protrusion from being out of position when the active bending section 200 is deformed inward, in an optional embodiment, an extension protrusion 111 is provided on the positioning protrusion, and a second clamping space 101 is formed between the extension protrusion 111 and the inner peripheral surface of the front end shell 100, and the second clamping space 101 is used to clamp the peripheral wall of the active bending section 200. In this embodiment, a second clamping space 101 is formed between the extended protrusion 111 and the inner circumferential surface of the front end shell 100. When the front end shell 100 is sleeved on the outside of the active bending section 200, the peripheral wall of the active bending section 200 will be inserted into the second clamping space 101, so that the extended protrusion 111 and the inner circumferential surface of the front end shell 100 can jointly clamp the active bending section 200. That is to say, the extended protrusion 111 can limit the active bending section 200 to prevent the positioning recess from moving in a direction away from the inner circumferential surface of the front end shell 100, thereby hindering the active bending section 200 from deforming inward, and further preventing the positioning recess from being out of position with the positioning protrusion.

[0034] In an optional embodiment, the cross-sectional area of ​​the positioning protrusion gradually decreases in the direction extending from the side of the positioning protrusion close to the front end shell 100 to the side of the positioning protrusion away from the front end shell 100. In this embodiment, the cross-sectional area of ​​the side of the positioning protrusion close to the front end shell 100 is larger, and the cross-sectional area of ​​the side of the positioning protrusion away from the front end shell 100 is smaller, so that the positioning protrusion and the front end shell 100 have a larger connection area, thereby increasing the connection strength between the positioning protrusion and the front end shell 100. In addition, since the side of the positioning protrusion away from the front end shell 100 is close to the middle area of ​​the front end shell 100, and since there are more components to be arranged in the middle area of ​​the front end shell 100, the cross-sectional area of ​​the side of the positioning protrusion away from the front end shell 100 in this embodiment is smaller, which can reduce the space occupied by the middle area of ​​the front end shell 100, so as to prevent the positioning protrusion from interfering with the layout of the components located in the middle area of ​​the front end shell 100. Of course, in the above-mentioned direction, the cross-sectional area of ​​the positioning protrusion may also remain unchanged, and the present application does not limit the shape of the positioning protrusion.

[0035] like Figures 2 to 3As shown, the embodiment of the present application further discloses an insertion portion of an endoscope, comprising an active bending section 200 and a front end shell 100 as described in any of the above embodiments, the front end shell 100 is sleeved on the outside of the active bending section 200, and a matching portion 210 is provided at the distal end of the active bending section 200. In this embodiment, since the front end shell 100 is sleeved on the outside of the active bending section 200, the inner hole size of the front end shell 100 is larger than the outer size of the active bending section 200, thereby increasing the volume of the receiving space in the front end shell 100, which is beneficial to the layout of the components in the front end shell 100.

[0036] In an optional embodiment, the insertion portion further includes an instrument tube 400 and a camera module 300, a portion of the instrument tube 400 and the camera module 300 are arranged in the front end shell 100 at intervals, and the positioning portion 110 is a positioning convex block, and the number of the positioning convex blocks is at least two, and each positioning convex block is evenly distributed on both sides of the arrangement path of the camera module 300 and the instrument tube 400. In this embodiment, each positioning convex block is evenly distributed on both sides of the arrangement path of the camera module 300 and the instrument tube 400, that is, the number of positioning convex blocks located on one side of the arrangement path of the camera module 300 and the instrument tube 400 is equal to the number of positioning convex blocks located on the other side of the arrangement path of the camera module 300 and the instrument tube 400, so that the amount of glue injection on both sides of the above arrangement path can be balanced, so that the amount of glue injection on both sides is equal, thereby preventing the camera module 300 from tilting due to different squeezing forces of the glue on both sides on the camera module 300. Of course, the number of positioning bumps on one side of the arrangement path of the camera module 300 and the instrument tube 400 may not be equal to the number of positioning bumps on the other side of the arrangement path of the camera module 300 and the instrument tube 400 .

[0037] In an optional embodiment, each positioning protrusion is arranged on the side of the instrument tube 400 away from the camera module 300. In this embodiment, the side of the instrument tube 400 close to the camera module 300 is the middle area of ​​the front end shell 100, and the middle area of ​​the front end shell 100 has more parts, so the positioning protrusion of this embodiment is arranged on the side of the instrument tube 400 away from the camera module 300 so that the positioning protrusion avoids the middle area of ​​the front end shell 100, thereby not interfering with the layout of the parts in the middle area of ​​the front end shell 100.

[0038] The embodiment of the present application also discloses an endoscope, comprising an insertion portion as described in any of the above embodiments. In this embodiment, since the front end shell 100 is sleeved on the outside of the active bending section 200, the inner hole size of the front end shell 100 is larger than the outer size of the active bending section 200, thereby increasing the volume of the receiving space in the front end shell 100, which is beneficial to the layout of the components in the front end shell 100.

[0039] The endoscope referred to in the embodiments of the present application may be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a rhinoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc. The embodiments of the present application do not impose any specific restrictions on the type of endoscope.

[0040] The above embodiments of the present application focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here. The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present application, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present application and the claims, all of which are within the protection of the present application.

Claims

1. A front end shell of an endoscope, used for connecting an active bending section (200), characterized in that: The front end shell (100) can be sleeved on the outside of the active bending section (200), and a positioning portion (110) is provided on the inner circumferential surface of the front end shell (100), and the positioning portion (110) is used to position and cooperate with the matching portion (210) of the active bending section (200), so that the front end shell (100) and the active bending section (200) are respectively positioned and cooperated in the circumferential direction of the front end shell (100) and in the first direction. Wherein, the first direction is a direction extending from the distal end of the front end shell (100) to the proximal end of the front end shell (100).

2. The front end housing according to claim 1, characterized in that: The positioning portion (110) is a positioning protrusion, and the positioning protrusion extends along the axial direction of the front end shell (100).

3. The front end housing according to claim 2, characterized in that: The number of the positioning protrusions is at least two, the front end shell (100) has a first side and a second side arranged opposite to each other, the first side and the second side are both provided with the positioning protrusions, and a first clamping space for clamping the instrument tube (400) is formed between the positioning protrusion located on the first side and the positioning protrusion located on the second side; and / or, The positioning protrusion extends to the distal end of the front end shell (100).

4. The front end housing according to claim 2, characterized in that: The matching portion (210) is a positioning recess extending to the inner circumference of the active bending section (200), and the portion of the positioning protrusion that matches the positioning recess protrudes from the inner circumference of the active bending section (200).

5. The front end housing according to claim 4, characterized in that: An extension convex portion (111) is provided on the positioning convex block, and a second clamping space (101) is formed between the extension convex portion (111) and the inner peripheral surface of the front end shell (100), and the second clamping space (101) is used to clamp the peripheral wall of the active bending section (200).

6. The front end housing according to claim 2, characterized in that: In a direction extending from a side of the positioning protrusion close to the front end shell (100) to a side of the positioning protrusion away from the front end shell (100), the cross-sectional area of ​​the positioning protrusion gradually decreases.

7. An insertion portion of an endoscope, characterized in that: It comprises an active bending section (200) and a front end shell (100) according to any one of claims 1 to 6, wherein the front end shell (100) is sleeved on the outside of the active bending section (200), and the matching portion (210) is provided at the distal end of the active bending section (200).

8. The insertion portion according to claim 7, characterized in that: The insertion portion further comprises an instrument tube (400) and a camera module (300), wherein a portion of the instrument tube (400) and the camera module (300) are arranged in a spaced relationship within the front end housing (100). The positioning portion (110) is a positioning convex block, and the number of the positioning convex blocks is at least two, and the positioning convex blocks are evenly distributed on both sides of the arrangement path of the camera module (300) and the instrument tube (400).

9. The insertion portion according to claim 8, characterized in that: Each of the positioning protrusions is arranged on a side of the instrument tube (400) away from the camera module (300).

10. An endoscope, characterized in that: It comprises the insert part as claimed in any one of claims 7 to 9.

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