Snake bone device and endoscope

Abstract

The utility model relates to the technical field of medical instruments, and discloses a snake bone device and an endoscope, and the snake bone device comprises a snake bone main body which comprises at least two bone joints which are connected in sequence; the hole group unit comprises at least two traction holes, the traction holes are formed in the joints, and the hole group unit extends in the connecting direction of the at least two joints; the adjacent joints are mutually hinged through the connecting assembly, the connecting assembly comprises a connecting piece and a connecting matching assembly, the connecting piece and / or the connecting matching assembly are / is arranged on the two adjacent joints in a penetrating mode, and the connecting matching assembly is provided with a containing space for containing the bonding medium; and the traction assembly is arranged in the traction hole so as to adjust the bending direction of the snake bone main body under the action of external force. In this way, the basic requirement for bending movement of the snake bone body is met, the installation efficiency is improved through the connecting piece and the connecting matching assembly which are connected in a bonding mode, and the consistency of the machining technology is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical appliances, in particular to a snake bone device and an endoscope. Background Art

[0002] In the field of medical devices, the endoscope is a commonly used medical instrument that is inserted into the human body through a bendable end for medical personnel to conduct inspections. As an important component of the bent end, the snake-bone device is connected to each other through the joints, so that the snake-bone device can bend and change the direction of the lens in the human body.

[0003] At present, the various joints of the snake-bone device are mainly hinged to each other through rivets, but the rivets are small in size, the riveting installation process in the process of cooperating with the joints is complicated, and the installation efficiency is low, which affects the production efficiency of the snake-bone device and the endoscope. Utility Model Content

[0004] In view of this, the utility model provides a snake-bone device and an endoscope to solve the problem that the installation process of each bone joint in the snake-bone device being hingedly connected by rivets is inefficient, which affects the production efficiency of the snake-bone device and the endoscope.

[0005] In the first aspect, the utility model provides a snake bone device, comprising: a snake bone main body, comprising at least two serially connected joints; a hole group unit, comprising at least two traction holes, the traction holes are formed in the joints, and the hole group unit extends along the connection direction of at least two of the joints; a connecting component, adjacent joints are hinged to each other through the connecting component, the connecting component comprises a connecting piece and a connecting matching component, the connecting piece and / or the connecting matching component are passed through two adjacent joints, and the connecting matching component is provided with a receiving space to accommodate an adhesive medium; and a traction component, which is arranged in the traction hole to adjust the bending direction of the snake bone main body under the action of an external force.

[0006] Beneficial effects:

[0007] The connecting component connects adjacent joints, and the connecting component includes connecting parts and connecting matching components that are bonded to each other. The connecting component connects adjacent joints, and the adjacent joints are hinged to each other, which meets the basic requirements of the bending activity of the snake bone body. On the other hand, the connecting parts and connecting matching components that are bonded to each other only need to be filled with glue, plugged in, and cured, which is easy to install and has high assembly efficiency.

[0008] In addition, the connecting components connecting the joints are small in size and easily affected by external forces during the connection process, making it difficult to ensure the consistency of the processing technology, reducing the molding quality of the connecting components, and easily causing the connecting components to fall off or the snake bone device to deflect abnormally, affecting the accuracy of the bending function of the endoscope. Compared with the connecting components that are completely connected under the action of external forces, the connecting components connected by bonding have lower external force assembly requirements, effectively improving the structural consistency of each connecting component, avoiding the problem of connecting components falling off or abnormal deflection of connecting components, and ensuring the accuracy of the bending function of the endoscope.

[0009] In an optional embodiment, the connecting and fitting assembly includes: a first limit seat; a connecting sleeve, one end of which is connected to the first limit seat, and the other end passes through two adjacent bone joints, and a accommodating space is formed in the connecting sleeve, and the accommodating space includes the accommodating space and the connecting space that are interconnected, the accommodating space is adjacent to the first limit seat, and the connecting space is far away from the first limit seat, and the inner wall of the connecting sleeve at the corresponding position is connected to the connecting piece.

[0010] In an optional embodiment, the connecting member includes a second limit seat and a nail body, the nail body penetrates into the connecting space and is interference connected with the connecting sleeve, and the second limit seat and the first limit seat are arranged on both sides of the joint hinge position for respectively limiting the joint.

[0011] In an optional embodiment, the snake bone body includes several bone joints, which are divided into caudal bone joints, several middle bone joints and top bone joints along the extension direction of the snake bone body. The caudal bone joints and the top bone joints are arranged at both ends of the snake bone body, and the middle bone joints are respectively protruded with a first hinged ear and a second hinged ear at both ends along the axial direction. The top bone joint is provided with a first hinged ear at one end facing the middle bone joint, and the caudal bone joint is provided with a second hinged ear at one end facing the middle bone joint. The first hinged ear and the second hinged ear of the adjacent bone joint are hinged to each other under the connecting action of the connecting component.

[0012] In an optional embodiment, the first articulated ears are paired and relatively distributed at the ends of the condyle, the second articulated ears are paired and relatively distributed at the ends of the condyle, and the axial directions of the connecting components on the first articulated ears and the second articulated ears are staggered or in the same direction.

[0013] In an optional embodiment, the condyle is annular, and at least the caudal condyle and the middle condyle are respectively provided with at least two traction holes spaced apart along the circumferential side walls, the traction holes are arranged along the axial direction of the condyle, and the traction assembly is used to pass through the traction holes and connect with the top condyle.

[0014] In an optional embodiment, the two traction holes are opposite to each other along the circumferential side walls of the condyle where they are located, and are away from the first hinged ear and the second hinged ear.

[0015] In an optional embodiment, the traction assembly includes: a traction member, which is sequentially inserted into the traction holes of the caudal joint, each of the middle joints and the apical joint from one side of the caudal joint; and a limiting pin, which is arranged at the end of the traction member and is adhesively connected to the traction hole of the apical joint.

[0016] In an optional embodiment, the condyles and / or the connecting components are injection molded separately.

[0017] In a second aspect, the utility model provides an endoscope, comprising the above-mentioned snake bone device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the related technologies, the drawings required for use in the specific implementation methods or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 This is a schematic structural diagram of a snake bone device according to an embodiment of the utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure of a portion of the snake-bone device shown in a bent state;

[0021] Figure 3 for Figure 1 Schematic diagram of the structure of the caudal segment of the mid-snake device;

[0022] Figure 4 for Figure 1 Schematic diagram of the structure of the apical condyle of the mesosacral device;

[0023] Figure 5 for Figure 1 Schematic diagram of the structure of the middle bone segment of the middle snake bone device;

[0024] Figure 6 for Figure 1 A schematic diagram of the structure of the connection between adjacent middle segments of the middle snake bone device;

[0025] Figure 7 for Figure 6 Schematic diagram of the internal structure of the connection between adjacent middle segments of the middle snake bone device;

[0026] Figure 8 for Figure 1 A schematic diagram of the three-dimensional structure of the connecting parts and connecting matching components of the middle snake bone device;

[0027] Fig. 9 for Figure 1 A schematic diagram of the internal structure of the middle snake bone device when the connecting piece and the connecting matching assembly are connected;

[0028] Fig.10 for Figure 1 A schematic diagram of the three-dimensional structure of the limit pin of the middle snake bone device;

[0029] Fig.11 for Figure 1 Schematic diagram of the three-dimensional structure of the traction component of the middle snake bone device.

[0030] Description of reference numerals:

[0031] 1. Joint; 11. Tail joint; 12. Middle joint; 13. Top joint; 14. First hinged ear; 15. Second hinged ear; 16. Traction hole; 2. Traction piece; 3. Limit pin; 4. Connecting piece; 41. Second limit seat; 42. Nail body; 5. Connecting fitting assembly; 51. First limit seat; 52. Connecting sleeve; 53. Accommodating space; 54. Connecting space. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0033] Combine the following Figures 1 to 11 , describing an embodiment of the utility model.

[0034] According to an embodiment of the utility model, on the one hand, a snake bone device is provided, including: a snake bone body, a hole group unit, a traction assembly and a connection assembly.

[0035] The main body of the snake bone is a single-root structure, including at least two condyles 1 connected in sequence. In some embodiments, the condyles 1 are annular, and the adjacent two ends of the adjacent condyles 1 in the extending direction of the main body of the snake bone are connected to each other. The hole group unit includes at least two traction holes 16, which are formed on the condyles 1. The hole group unit extends along the connection direction of at least two condyles 1, specifically in the same direction as the main body of the snake bone. The traction component is a flexible member, which is arranged in the traction hole 16 and is used to adjust the bending direction of the main body of the snake bone under the action of external force. The adjacent condyles 1 are hinged to each other in pairs under the connection action of the connection component.

[0036] Specifically, the connection assembly includes a connection piece 4 and a connection matching assembly 5, the connection piece 4 and the connection matching assembly 5 pass through two adjacent bone joints 1, and the connection matching assembly 5 is provided with a receiving space 53 for accommodating an adhesive medium and bonding and connecting with the connection piece 4. The adhesive medium is preferably a structural adhesive, such as an epoxy resin adhesive, etc., which can be cured at room temperature or cured by heating at a low temperature. As a convertible embodiment, only one of the connection piece 4 and the connection matching assembly 5 can also pass through two adjacent bone joints 1.

[0037] The connecting component connects adjacent joints 1, and the connecting component includes a connecting piece 4 and a connecting matching component 5 that are bonded to each other. On the one hand, the connecting component connects adjacent joints 1, and adjacent joints 1 are hinged to each other, which meets the basic requirements of the bending activity of the snake bone body. On the other hand, the bonding connecting piece 4 and the connecting matching component 5 only need to be filled with glue, plugged in, and cured, which is easy to install and has high assembly efficiency.

[0038] In addition, the connecting component connecting the joint 1 is small in size and easily affected by external forces during the connection process, making it difficult to ensure the consistency of the processing technology, reducing the molding quality of the connecting component, and easily causing the connecting component to fall off or the snake bone device to deflect abnormally, thereby affecting the accuracy of the bending function of the endoscope. Compared with the connecting components that are completely connected under the action of external forces, the connecting components connected by bonding have lower external force assembly requirements, effectively improving the structural consistency of each connecting component, avoiding the problem of connecting component falling off or abnormal deflection of connecting components, and ensuring the accuracy of the bending function of the endoscope.

[0039] The connection and matching assembly 5 includes: a first limiting seat 51 and a connecting sleeve 52. The first limiting seat 51 is in the shape of a baffle, and the specific shape is not limited, preferably in the shape of a disc, and the connecting sleeve 52 is in the shape of a cylinder with two ends open, one end of which is connected to the first limiting seat 51 and is closed, and the other end passes through two adjacent bone joints 1. An accommodating space is formed in the connecting sleeve 52, and the accommodating space includes a mutually connected accommodating space 53 and a connecting space 54. The accommodating space 53 is adjacent to the first limiting seat 51, and the connecting space 54 is far away from the first limiting seat 51. The inner wall of the connecting sleeve 52 at the corresponding position of the connecting space 54 is interference-connected with the connecting member 4. As a convertible embodiment, the inner wall of the connecting sleeve 52 at the corresponding position of the connecting space 54 is clearance-matched with the connecting member 4.

[0040] The accommodating space in the connecting and fitting component 5 includes a receiving space 53 and a connecting space 54. During the connection process of the connecting and fitting component 5 and the riveted structure, when the inner wall of the connecting sleeve 52 is in interference connection with the connecting piece 4, the bonding and fixing and the interference limiting connection can be performed in sections. Such bonding and fixing reduces the external force requirement for installation. At the same time, the limiting method of the interference connection during the riveting process is retained to further enhance the connection strength between the connecting and fitting component 5 and the connecting piece 4. In addition, the connection method with only partial interference connection does not require a roughening step, thereby ensuring a simplified processing process. Compared with the complete riveting process, it still has the effects of simple installation and high assembly efficiency.

[0041] When the inner wall of the connecting sleeve 52 at the corresponding position of the connecting space 54 is loosely matched with the connecting piece 4, only bonding and fixing can be selected to limit the position, and by connecting the receiving space 53 and the connecting space 54 to each other, the contact area between the bonding medium and the connecting component is increased, the connection strength is increased, and the processing technology is further simplified.

[0042] The connecting member 4 includes a second limiting seat 41 and a nail body 42. The nail body 42 penetrates into the connecting space 54 and is interference-connected with the connecting sleeve 52. The end of the nail body 42 extends into the receiving space 53 and is bonded to the adhesive medium in the receiving space 53. At the same time, the second limiting seat 41 is in the shape of a baffle. The specific shape is not limited, and it is preferably in the shape of a circular plate. The second limiting seat 41 and the first limiting seat 51 are arranged on both sides of the hinge position of the joint 1, and are used to limit the joint 1 respectively.

[0043] As a convertible embodiment, the nail body 42 can be bonded and connected only to the bonding medium in the accommodating space 53 , and spaced from the inner wall of the connecting sleeve 52 at the position of the connecting space 54 .

[0044] In addition, the snake bone body includes several bone joints 1, which are divided into a tail bone joint 11, several middle bone joints 12 and a top bone joint 13 along the extension direction of the snake bone body. The tail bone joint 11 and the top bone joint 13 are respectively arranged at the two ends of the snake bone body, and the middle bone joint 12 is protrudingly provided with a first hinge ear 14 and a second hinge ear 15 at both ends along the axial direction. The top bone joint 13 is provided with a first hinge ear 14 at one end facing the middle bone joint 12, and the tail bone joint 11 is provided with a second hinge ear 15 at one end facing the middle bone joint 12. The first hinged ear 14 and the second hinged ear 15 of the adjacent joint 1 are hinged to each other under the connection of the connection assembly. Specifically, in this embodiment, the first hinged ear 14 and the second hinged ear 15 are both provided with through holes for the connection assembly to pass through. During the assembly process, the through holes overlap and are hinged and stacked. Specifically, the connecting sleeve 52 of the connecting and matching assembly 5 passes through the through holes of the first hinged ear 14 and the second hinged ear 15 respectively. The first limiting seat 51 is arranged on one side of the stacking structure of the first hinged ear 14 and the second hinged ear 15. The nail body 42 is inserted into the connecting sleeve 52 and is bonded with the adhesive medium in the connecting sleeve 52. The second limiting seat 41 is arranged on the other side of the stacking structure of the first hinged ear 14 and the second hinged ear 15. In this embodiment, the connecting and matching assembly 5 is arranged on the outside of the annular joint 1.

[0045] A hinged ear is provided at the end of each joint 1. On the one hand, a hinged connection component is protruding from the end so that after two adjacent joints 1 are hinged, there is a movable space between their respective opposite end faces for relative rotation of the joints 1, thereby ensuring the flexibility of the movement of the snake bone body. On the other hand, the protruding hinged ear has a larger operating space, which is also convenient for setting through holes and connecting components on the hinged ear.

[0046] The first hinged ears 14 are arranged in pairs at the ends of the condyle 1 and are distributed opposite to each other. The second hinged ears 15 are arranged in pairs at the ends of the condyle 1 and are distributed opposite to each other.

[0047] Specifically, the axial direction of the connecting assembly refers to the axial direction of the columnar matching structure of the connecting sleeve 52 and the nail body 42. In this embodiment, the axial directions of the connecting assemblies on the tail end condyle 11, each middle condyle 12 and the top condyle 13, the first hinge ear 14 and the second hinge ear 15 are all in the same direction. As a convertible embodiment, along the length direction of the snake bone body, the axial directions of the connecting components on the first articulated ears 14 and the second articulated ears 15 of different joints 1 can be staggered or in the same direction. Specifically, when the axial directions of the connecting components on the first articulated ears 14 and the second articulated ears 15 of different joints 1 are staggered, the specific angle between the two is not subject to excessive restrictions, and it is sufficient to be greater than or equal to 0 and less than or equal to 90 degrees. Specifically, it can be 0°, 5°, 10, 15, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 75°, 80°, 85° or 90°. When the two are in the same direction, the angle is 0, and when the angle is 90°, the axial directions of the connecting components on the first articulated ears 14 and the second articulated ears 15 of adjacent joints 1 are perpendicular.

[0048] In addition, the condyle 1 is annular, and two traction holes 16 are provided along the circumferential side wall at intervals. The traction holes 16 are along the axial direction for the traction assembly to pass through. In some embodiments, more than two traction holes 16 can be provided on a single condyle 1, and corresponding traction assemblies are provided. Furthermore, in this embodiment, on the two opposite end faces of adjacent condyles 1, the end ring edge between the two hinged ears on the same end face is in an inwardly concave arc shape.

[0049] In this embodiment, each joint 1, namely the caudal joint 11, the middle joint 12 and the apical joint 13, is provided with a traction hole 16 for the traction assembly to pass through. It can be understood that the traction hole 16 can also be only provided on the caudal joint 11 and the middle joint 12. The traction connection end is connected to the traction assembly on the apical joint 13, and the traction connection end can be a structure such as a groove, a ring or a hook.

[0050] Furthermore, in this embodiment, the two traction holes 16 are opposite to each other along the side wall of the condyle 1 and are away from the first hinge ear 14 and the second hinge ear 15. Preferably, on each condyle 1, the plane where the traction holes 16 are located is perpendicular to the plane where the first hinge ear 14 and the second hinge ear 15 are located.

[0051] The traction assembly includes: a traction member 2 and a limit pin 3.

[0052] The traction member 2 is preferably a stainless steel wire rope, or it can be a polymer composite material, etc. The traction member 2 is successively inserted into the traction holes 16 of the caudal joint 11, each middle joint 12 and the top joint 13 from one side of the caudal joint 11. The limit pin 3 is arranged at the end of the traction member 2 and is bonded and connected to the traction hole 16 of the top joint 13. Specifically, the limit pin 3 can be made of brass or stainless steel. Further, the limit pin 3 and the traction member 2 are connected by welding, preferably tin soldering. The limit pin 3 and the traction hole 16 of the top joint 13 are bonded and fixed by an adhesive medium. It can be understood that the limit pin 3 and the traction hole 16 of the top joint 13 can also be interference connected.

[0053] In this embodiment, the joint 1 and the connecting assembly are both injection molded. Preferably, the material of the connecting piece 4, the connecting fitting assembly 5 and the joint 1 is engineering plastic, such as PSU, PPSU, PSF, PEEK, PEK, PPS and MPPO, etc. It can be understood that the material of the connecting piece 4, the connecting fitting assembly 5 and the joint 1 can be metal, such as SUS304 stainless steel, etc., and the processing method can be processed by powder metallurgy. It can be understood that the joint 1 and the connecting assembly are injection molded or only one of them is injection molded.

[0054] On the other hand, this embodiment also provides an endoscope, comprising the above-mentioned snake bone device.

[0055] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A snake bone device, characterized in that: include: The snake bone body comprises at least two serially connected joints (1); A hole group unit, comprising at least two traction holes (16), wherein the traction holes (16) are formed on the condyles (1), and the hole group unit extends along a connection direction of at least two condyles (1); A connecting assembly, wherein the adjacent bone joints (1) are hingedly connected to each other through the connecting assembly, the connecting assembly comprising a connecting piece (4) and a connecting matching assembly (5), the connecting piece (4) and / or the connecting matching assembly (5) being arranged through two adjacent bone joints (1), and the connecting matching assembly (5) being provided with a receiving space (53) for accommodating an adhesive medium; and A traction assembly is arranged in the traction hole (16) to adjust the bending direction of the snake bone body under the action of an external force.

2. The snake bone device according to claim 1, characterized in that: The connection and matching assembly (5) comprises: A first limiting seat (51); A connecting sleeve (52) has one end connected to the first limiting seat (51) and the other end passing through two adjacent bone joints (1). An accommodating space is formed in the connecting sleeve (52), and the accommodating space includes a receiving space (53) and a connecting space (54) that are interconnected. The receiving space (53) is adjacent to the first limiting seat (51), and the connecting space (54) is far away from the first limiting seat (51). The inner wall of the connecting sleeve (52) at the corresponding position is matched and connected with the connecting piece (4).

3. The snake bone device according to claim 2, characterized in that: The connecting member (4) comprises a second limiting seat (41) and a nail body (42); the nail body (42) penetrates into the connecting space (54) and is interference-connected with the connecting sleeve (52); the second limiting seat (41) and the first limiting seat (51) are arranged on both sides of the hinge position of the joint (1) for limiting the joint (1) respectively.

4. The snake bone device according to any one of claims 1 to 3, characterized in that: The snake bone body comprises a plurality of bone segments (1), which are divided into a tail bone segment (11), a plurality of middle bone segments (12) and a top bone segment (13) along the extension direction of the snake bone body. The tail bone segment (11) and the top bone segment (13) are respectively arranged at two ends of the snake bone body. The middle bone segment (12) is respectively provided with a first hinged ear (14) and a second hinged ear (15) at two ends along the axial direction. The top bone segment (13) is provided with a first hinged ear (14) at one end facing the middle bone segment (12), and the tail bone segment (11) is provided with a second hinged ear (15) at one end facing the middle bone segment (12). The first hinged ear (14) and the second hinged ear (15) of the adjacent bone segment (1) are mutually hingedly connected under the connection action of the connection component.

5. The snake bone device according to claim 4, characterized in that: The first hinged ears (14) are arranged in pairs and are relatively distributed at the ends of the joints (1); the second hinged ears (15) are arranged in pairs and are relatively distributed at the ends of the joints (1); and the axial directions of the connecting components on the first hinged ears (14) and the second hinged ears (15) are staggered or in the same direction.

6. The snake bone device according to claim 4, characterized in that: The condyle (1) is annular in shape, and the caudal condyle (11) and the middle condyle (12) are respectively provided with at least two traction holes (16) spaced apart along the circumferential side walls, the traction holes (16) are arranged along the axial direction of the condyle (1), and the traction assembly is used to pass through the traction holes (16) and be connected to the top condyle (13).

7. The snake bone device according to claim 6, characterized in that: The two traction holes (16) are opposite to each other along the peripheral side walls of the joint (1) where they are located, and are away from the first hinge ear (14) and the second hinge ear (15).

8. The snake bone device according to claim 6 or 7, characterized in that: The traction assembly comprises: A traction member (2) is sequentially inserted into the traction holes (16) of the caudal joint (11), each of the middle joints (12) and the top joint (13) from one side of the caudal joint (11); A limiting pin (3) is arranged at the end of the traction member (2) and is bonded and connected to the traction hole (16) of the top condyle (13).

9. The snake bone device according to claim 1, characterized in that: The condyle (1) and / or the connecting component are / is injection molded separately.

10. An endoscope, characterized in that: The invention comprises the snake bone device as described in any one of claims 1 to 9.

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