Endoscope front end assembly and endoscope

Abstract

The utility model relates to the technical field of endoscopes, in particular to an endoscope front end assembly and an endoscope, which comprise a front end head, a connecting pipeline, a snake bone unit and a fastener, the connecting pipeline is sleeved at the far end of the snake bone unit, and the near end of the front end head is sleeved on the connecting pipeline. According to the utility model, the connecting pipeline is utilized to realize diameter shrinkage at the joint of the front end head and the snake bone unit, so that the snake bone unit does not need to be matched with the near-end diameter of the front end head, the snake bone unit can be directly subjected to miniaturization design, meanwhile, the processing technology of the front end head and the snake bone unit can be simplified, the processing cost of the front end head and the snake bone unit is reduced, and the processing efficiency is improved. The contact area between the front end head and the connecting pipeline and the contact area between the connecting pipeline and the snake bone unit are increased, stress concentration is avoided, the mechanical structural strength of the endoscope front end assembly is enhanced, and therefore the use safety and stability of an endoscope are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of endoscopes, in particular to an endoscope front end component and an endoscope. Background Art

[0002] As one of the important medical devices in modern surgery, the endoscope includes an operating handle and an insertion part. The insertion part can enter the human body through the human cavity or surgical incision. The camera module at the far end of the insertion part helps the doctor determine the location of the lesion in the patient's body and the tissue structure characteristics of the lesion location.

[0003] However, the applicant discovered during the process of implementing the present utility model that when the endoscope insertion portion is inserted into the body cavity, especially when the snake bone unit is made of metal, it is easy for the patient to have a stress reaction. Utility Model Content

[0004] The purpose of this application is to provide an endoscope front end assembly and an endoscope to solve the above technical problems existing in the prior art, mainly including the following two aspects:

[0005] The first aspect of the present application provides a front end assembly of an endoscope, including a front end head, a connecting pipe, a snake bone unit and a fastener, wherein the front end head, the connecting pipe and the snake bone unit are respectively made of metal, the connecting pipe is sleeved on the distal end of the snake bone unit, a first through hole is provided on the peripheral wall of the connecting pipe, the first through hole is axially located in the middle of the connecting pipe, the distal end of the front end head is used to accommodate a camera module, the proximal end of the front end head is sleeved on the connecting pipe, a second through hole corresponding to the first through hole is provided on the proximal peripheral wall of the front end head, the fastener passes through the second through hole and the first through hole in sequence, and is connected to the snake bone unit.

[0006] Furthermore, the distal end of the connecting pipe protrudes beyond the distal end of the snake bone unit.

[0007] Furthermore, a first stopper is provided on the inner wall of the proximal end of the front end head, and a first abutting surface is provided at the proximal end of the first stopper, and the first abutting surface is used for abutting and cooperating with the distal end of the connecting pipe.

[0008] Furthermore, a first transition surface is provided at the distal end of the first limiting member, and the first transition surface is used to achieve a smooth transition between the inner wall of the front end head and the inner wall of the connecting pipe.

[0009] Furthermore, a second stopper is provided on the inner wall of the distal end of the connecting pipe, and a second abutting surface is provided at the proximal end of the second stopper, and the second abutting surface is used for abutting and cooperating with the distal end of the snake unit.

[0010] Furthermore, a second transition surface is provided at the distal end of the second limiting member, and the second transition surface is used to achieve a smooth transition between the inner wall of the connecting pipe and the inner wall of the snake bone unit.

[0011] Furthermore, the proximal end of the connecting pipe protrudes beyond the proximal end of the front end head.

[0012] Furthermore, a third transition surface is provided at the proximal end of the front end head, and the third transition surface is used to achieve a smooth transition between the peripheral wall of the front end head and the peripheral wall of the connecting pipe.

[0013] Furthermore, a fourth transition surface is provided at the proximal end of the connecting pipe, and the fourth transition surface is used to achieve a smooth transition between the peripheral wall of the connecting pipe and the peripheral wall of the snake bone unit.

[0014] A second aspect of the present application provides an endoscope, comprising a handle and the above-mentioned endoscope front end assembly, wherein the endoscope front end assembly is arranged at the distal end of the handle.

[0015] Compared with the prior art, the utility model has at least the following technical effects:

[0016] The utility model utilizes a connecting pipe to achieve a reduced diameter between the front end head and the serpentine unit connection, so that the serpentine unit does not need to adapt to the proximal diameter of the front end head, and the serpentine unit can be directly miniaturized. At the same time, it can also simplify the processing technology of the front end head and the serpentine unit, reduce the processing cost of the front end head and the serpentine unit, increase the contact area between the front end head and the connecting pipe, and the contact area between the connecting pipe and the serpentine unit, avoid stress concentration, and enhance the mechanical structure strength of the front end component of the endoscope, thereby effectively improving the safety and stability of the endoscope. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments of the utility model or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of the front end assembly of the endoscope of the utility model;

[0019] Figure 2 It is a schematic diagram of the internal structure of the front end assembly of the endoscope of the utility model;

[0020] Figure 3 yes Figure 2 An exploded view of the endoscope front end assembly;

[0021] Figure 4It is a side view of the front end assembly of the endoscope of the utility model;

[0022] Figure 5 yes Figure 4 Sectional view at AA;

[0023] Figure 6 It is a cross-sectional view of the connection of the front end head, the connecting pipe and the snake bone unit of the utility model;

[0024] Figure 7 It is a structural schematic diagram of the endoscope of the utility model;

[0025] In the figure,

[0026] 110, front end head; 111, second through hole; 112, first stopper; 120, connecting pipe; 121, first through hole; 122, second stopper; 130, snake bone unit; 131, third through hole; 140, fastener; 20, handle; 210, instrument channel; 220, camera module; 230, lighting unit. DETAILED DESCRIPTION

[0027] 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.

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0030] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] In addition, in the present utility model, "proximal end" and "distal end" refer to the far and near positions of the structure relative to human operation in the use environment, so as to facilitate the description of the positional relationship between components and facilitate understanding; for the same component, "proximal end" and "distal end" are the relative positional relationship of the component, not absolute; therefore, it should be understood from the perspective of realizing the principle of the present utility model, and cannot deviate from the essence of the present utility model.

[0032] As one of the important medical instruments in modern surgical operations, the endoscope includes an operating handle and an insertion part. The insertion part can enter the human body through a human cavity or a surgical incision. The insertion part includes a snake bone unit and a front end head arranged at the distal end of the snake bone unit. A camera module is arranged at the distal end of the front end head. By turning the lever on the operating handle, the insertion part can be driven to adjust its posture. The camera module at the distal end of the insertion part can observe the internal tissues of the human body and help doctors determine the location of the lesion in the patient's body and the tissue structure characteristics of the lesion location. When the insertion part is placed in the human body cavity, if The pyeloscope is inserted into the human renal pelvis. Since there is a large space inside the renal pelvis, the front end head can be used for posture adjustment. As for the ureter, it is the channel for the insertion part to be inserted into the renal pelvis. The space of the ureter itself is small, and the inner wall of the ureter is easy to contact with the insertion part during the posture adjustment process or the insertion process. Especially for the snake bone unit made of metal as the raw material, due to the rigidity of the metal raw material itself, the force on the inner wall of the ureter when the inner wall of the ureter contacts the insertion part is further increased, and the inner wall of the ureter can even be damaged, causing the patient to have a stress reaction and increasing the risk of surgery. In order to solve the problem that the insertion part of the endoscope is easy to cause a stress reaction in the patient during use, the present application provides an endoscope front end assembly and an endoscope that can reduce the risk of the insertion part causing a stress reaction in the patient. The specific structure is shown in the following embodiments.

[0033] Embodiment 1:

[0034] The present application embodiment provides an endoscope front end component, such as Figure 1 As shown, it includes a front end head 110, a connecting pipe 120, a snake bone unit 130 and a fastener 140, wherein the front end head 110, the connecting pipe 120 and the snake bone unit 130 are made of metal. Figure 2 and Figure 3 As shown, the connecting pipe 120 is sleeved on the distal end of the snake bone unit 130, and a first through hole 121 is arranged on the peripheral wall of the connecting pipe 120, and the first through hole 121 is axially located in the middle of the connecting pipe 120, the distal end of the front end head 110 is used to place the camera module 220, the proximal end of the front end head 110 is sleeved on the connecting pipe 120, and a second through hole 111 corresponding to the first through hole 121 is arranged on the proximal peripheral wall of the front end head 110, and the fastener 140 passes through the second through hole 111 and the first through hole 121 in sequence, and is connected to the snake bone unit 130.

[0035] During use, the front end head 110 is connected to the snake bone unit 130 through the connecting pipe 120, and sufficient installation space of the front end head 110 is reserved to install functional components such as the fixed instrument channel 210, the camera module 220 and the lighting unit 230. Then, through the connecting pipe 120, the diameter can be reduced between the connection of the front end head 110 and the snake bone unit 130, so that the snake bone unit 130 does not need to adapt to the proximal diameter of the front end head 110, and the snake bone unit 130 can be directly miniaturized to reduce the diameter of the main part of the insertion part, thereby reducing the contact frequency between the insertion part and the inner wall of the body cavity, especially increasing the passing performance of the insertion part during the insertion process. The risk of damage to the inner wall of the body cavity by the insertion part is reduced; in addition, the front end head 110 and the serpentine unit 130 are connected by a connecting pipe 120, so there is no need to design the proximal end of the front end head 110 and the distal end of the serpentine unit 130 with a diameter change (such as smoothly reducing the diameter of the front end head 110 along the axial direction, or smoothly increasing the diameter of the serpentine unit 130 along the axial direction), so that the proximal end of the front end head 110 and the distal end of the serpentine unit 130 can be kept in a straight tube design, thereby simplifying the processing technology of the front end head 110 and the serpentine unit 130 (in this embodiment, the connecting pipe 120 can be directly sleeved on the distal end of the serpentine unit 130, and then the front end head 110 can be sleeved on the connecting pipe 120, such as Figure 4 and Figure 5 As shown, by installing the fastener 140, the front end assembly of the endoscope can be quickly assembled, or the connecting pipe 120 is inserted into the proximal end of the front end head 110, and then the connecting pipe 120 is sleeved on the distal end of the snake bone unit 130, and the fastener 140 is installed, the front end assembly of the endoscope can be quickly assembled), reducing the processing cost of the front end head 110 and the snake bone unit 130. At the same time, based on the abutment between the inner wall of the connecting pipe 120 and the peripheral wall of the snake bone unit 130, as well as the peripheral wall of the connecting pipe 120 and the inner wall of the front end head 110, the contact area between the front end head 110 and the connecting pipe 120, as well as the contact area between the connecting pipe 120 and the snake bone unit 130 are increased, thereby avoiding stress concentration and enhancing the mechanical structural strength of the front end assembly of the endoscope, thereby effectively improving the safety and stability of the endoscope.

[0036] To improve the structural stability of the endoscope front-end components, such as Figure 2 , Figure 3 and Figure 6 As shown, the distal end of the connecting pipe 120 can be protruded beyond the distal end of the snake bone unit 130, effectively increasing the contact area between the front end head 110 and the connecting pipe 120, as well as the contact area between the connecting pipe 120 and the snake bone unit 130, thereby avoiding stress concentration, enhancing the mechanical structural strength of the front end assembly of the endoscope, and improving the safety and stability of the endoscope.

[0037] To facilitate the rapid assembly of the front end head 110 and the connecting pipe 120, as shown in FIG. Figure 6 As shown, a first limit member 112 can be provided on the proximal inner wall of the front end head 110, and a first abutting surface is provided at the proximal end of the first limit member 112, and the first abutting surface is used to abut and cooperate with the distal end of the connecting pipe 120. During the installation process, the distal end of the connecting pipe 120 is inserted into the proximal end of the front end head 110. When the distal end of the connecting pipe 120 abuts against the first abutting surface, it indicates that the insertion is in place, and then the front end head 110 or the connecting pipe 120 can be rotated so that the first through hole 121 corresponds to the second through hole 111, so as to install and fix the fastener 140, thereby realizing the rapid assembly of the front end head 110 and the connecting pipe 120.

[0038] In order to reduce the risk of mutual wear between the functional components in the front end head 110 and the first limiter 112 during the installation process, a first transition surface can be provided at the distal end of the first limiter 112. The first transition surface is used to achieve a smooth transition between the inner wall of the front end head 110 and the inner wall of the connecting pipe 120, so that the inner wall diameter gradually decreases from the front end head 110 to the connecting pipe 120.

[0039] To facilitate the rapid assembly of the connecting pipe 120 and the snake unit 130, as shown in FIG. Figure 6 As shown, a second limit piece 122 can be set on the inner wall of the distal end of the connecting pipe 120, and a second abutment surface is set at the proximal end of the second limit piece 122, and the second abutment surface is used to abut with the distal end of the snake bone unit 130. During the installation process, the distal end of the snake bone unit 130 is inserted into the proximal end of the connecting pipe 120. When the distal end of the snake bone unit 130 abuts against the second abutment surface, it indicates that the insertion is in place, and then the fastener 140 can be installed and fixed, so as to realize the rapid assembly between the connecting pipe 120 and the snake bone unit 130.

[0040] In order to reduce the risk of mutual wear between the functional components in the snake bone unit 130 and the second limit piece 122 during installation, a second transition surface can be set at the distal end of the second limit piece 122. The second transition surface is used to achieve a smooth transition between the inner wall of the connecting pipe 120 and the inner wall of the snake bone unit 130, so that the inner wall diameter gradually decreases from the connecting pipe 120 to the snake bone unit 130.

[0041] To improve the structural stability of the endoscope front-end components, such as Figure 2 , Figure 3 and Figure 6As shown, the proximal end of the connecting pipe 120 can be arranged to protrude from the proximal end of the front end head 110, effectively increasing the contact area between the front end head 110 and the connecting pipe 120, as well as the contact area between the connecting pipe 120 and the snake bone unit 130, thereby avoiding stress concentration, enhancing the mechanical structural strength of the front end assembly of the endoscope, and improving the safety and stability of the endoscope.

[0042] In order to avoid the formation of a step between the front end head 110 and the connecting pipe 120, a third transition surface can be set at the proximal end of the front end head 110. The third transition surface is used to achieve a smooth transition between the peripheral wall of the front end head 110 and the peripheral wall of the connecting pipe 120, so as to achieve a smooth transition and reduction of the outer diameter of the front end head 110 along the axial direction to match the outer diameter of the connecting pipe 120.

[0043] In order to avoid the formation of steps between the connecting pipe 120 and the serpentine unit 130, a fourth transition surface can be set at the proximal end of the connecting pipe 120. The fourth transition surface is used to achieve a smooth transition between the peripheral wall of the connecting pipe 120 and the peripheral wall of the serpentine unit 130, so as to achieve a smooth transition and reduction of the outer diameter of the connecting pipe 120 along the axial direction to match the outer diameter of the serpentine unit 130.

[0044] In some implementations, a first limit strip can be axially set on the proximal inner wall of the front end head 110, and a first limit groove matching the first limit strip can be axially set on the distal circumferential wall of the connecting pipe 120. Through the cooperation of the first limit strip and the first limit groove, pre-positioning is achieved during the installation of the front end head 110 and the connecting pipe 120, so that after installation, the first through hole 121 and the second through hole 111 correspond to each other, thereby eliminating the process of rotating and fine-tuning the front end head 110 and the connecting pipe 120, thereby improving the assembly efficiency and assembly effect.

[0045] In some implementations, a first limit groove can be axially set on the proximal inner wall of the front end head 110, and a first limit strip matching the first limit groove can be axially set on the distal circumferential wall of the connecting pipe 120. Through the cooperation of the first limit strip and the first limit groove, pre-positioning is achieved during the installation of the front end head 110 and the connecting pipe 120, so that after installation, the first through hole 121 and the second through hole 111 correspond to each other, thereby eliminating the process of rotating and fine-tuning the front end head 110 and the connecting pipe 120, thereby improving the assembly efficiency and assembly effect.

[0046] In some embodiments, a third through hole 131 can be set on the distal circumferential wall of the snake bone unit 130, and the third through hole 131 is used to cooperate with the first through hole 121, the second through hole 111 and the fastener 140 to achieve the connection and fixation between the front end head 110, the connecting pipe 120 and the snake bone unit 130. Preferably, a second limiting strip can be axially set on the proximal inner wall of the connecting pipe 120, and a second limiting groove matching the second limiting strip can be axially set on the distal circumferential wall of the snake bone unit 130. Through the cooperation of the second limiting strip and the second limiting groove, pre-positioning is achieved during the installation process of the connecting pipe 120 and the snake bone unit 130, so that after installation, the first through hole 121 and the third through hole 131 correspond to each other, thereby eliminating the process of rotating and fine-tuning the connecting pipe 120 and the snake bone unit 130, thereby improving the assembly efficiency and assembly effect.

[0047] In some implementations, a second limit groove can be axially set on the proximal inner wall of the connecting pipe 120, and a second limit strip matching the second limit groove can be axially set on the distal peripheral wall of the serpentine unit 130. Through the cooperation of the second limit strip and the second limit groove, pre-positioning is achieved during the installation of the connecting pipe 120 and the serpentine unit 130, so that after installation, the first through hole 121 and the third through hole 131 correspond to each other, thereby eliminating the process of rotating and fine-tuning the connecting pipe 120 and the serpentine unit 130, thereby improving the assembly efficiency and assembly effect.

[0048] In some embodiments, the fastener 140 can be set as a rivet, and the front end head 110, the connecting pipe 120 and the snake unit 130 are riveted together by the rivet.

[0049] In some embodiments, the fastener 140 can be configured as a bolt, and a thread can be provided on the inner wall of the third through hole to achieve a bolt connection between the front end head 110 , the connecting pipe 120 and the snake unit 130 .

[0050] Embodiment 2:

[0051] The present application embodiment provides an endoscope, such as Figure 7 As shown, it includes a handle 20 and the endoscope front end assembly in Example 1, and the endoscope front end assembly is arranged at the distal end of the handle 20.

[0052] It should be noted that the endoscope 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.

[0053] 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. An endoscope front end assembly, characterized in that: The invention comprises a front end head (110), a connecting pipe (120), a snake bone unit (130) and a fastener (140), wherein the front end head (110), the connecting pipe (120) and the snake bone unit (130) are respectively made of metal materials, the connecting pipe (120) is sleeved on the distal end of the snake bone unit (130), and a first through hole (121) is arranged on the peripheral wall of the connecting pipe (120), and the first through hole (121) is located axially at the connecting pipe. The front end (110) is located in the middle of the pipe (120), the distal end of the front end (110) is used to place the camera module (220), the proximal end of the front end (110) is sleeved on the connecting pipe (120), and a second through hole (111) corresponding to the first through hole (121) is provided on the proximal peripheral wall of the front end (110), and the fastener (140) passes through the second through hole (111) and the first through hole (121) in sequence and is connected to the snake bone unit (130).

2. The endoscope front end assembly according to claim 1, characterized in that: The distal end of the connecting pipe (120) protrudes beyond the distal end of the snake bone unit (130).

3. The endoscope front end assembly according to claim 2, characterized in that: A first stopper (112) is provided on the inner wall of the proximal end of the front end head (110), and a first abutment surface is provided at the proximal end of the first stopper (112), and the first abutment surface is used for abutting and cooperating with the distal end of the connecting pipe (120).

4. The endoscope front end assembly according to claim 3, characterized in that: A first transition surface is provided at the distal end of the first limiting member (112), and the first transition surface is used to achieve a smooth transition between the inner wall of the front end head (110) and the inner wall of the connecting pipe (120).

5. The endoscope front end assembly according to claim 2, characterized in that: A second stopper (122) is provided on the inner wall of the distal end of the connecting pipe (120), and a second abutment surface is provided at the proximal end of the second stopper (122), the second abutment surface being used for abutting and cooperating with the distal end of the snake bone unit (130).

6. The endoscope front end assembly according to claim 5, characterized in that: A second transition surface is provided at the distal end of the second stopper (122), and the second transition surface is used to achieve a smooth transition between the inner wall of the connecting pipe (120) and the inner wall of the snake bone unit (130).

7. The endoscope front end assembly according to any one of claims 1 to 6, characterized in that: The proximal end of the connecting pipe (120) protrudes from the proximal end of the front end head (110).

8. The endoscope front end assembly according to claim 7, characterized in that: A third transition surface is provided at the proximal end of the front end head (110), and the third transition surface is used to achieve a smooth transition between the peripheral wall of the front end head (110) and the peripheral wall of the connecting pipe (120).

9. The endoscope front end assembly according to claim 7, characterized in that: A fourth transition surface is provided at the proximal end of the connection pipe (120), and the fourth transition surface is used to achieve a smooth transition between the peripheral wall of the connection pipe (120) and the peripheral wall of the snake bone unit (130).

10. An endoscope, characterized in that: It comprises a handle (20) and an endoscope front end assembly according to any one of claims 1 to 9, wherein the endoscope front end assembly is arranged at the distal end of the handle (20).

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