Insertion section structure and endoscope

Abstract

The embodiment of the utility model provides a kind of insertion part structure and endoscope, it is related to medical instrument field.The insertion part structure includes first end head, snake bone and steel wire group, snake bone includes first curved section and second curved section, one end of first curved section is connected with second curved section, the other end of first curved section is connected with first end head;Steel wire group includes multiple steel wires, at least part steel wire is connected with first curved section, so that first curved section can be in first direction and second direction and is deflected and is bent, first direction and second direction are perpendicular;At least part steel wire is connected with second curved section, so that second curved section can be in third direction and fourth direction and is deflected and is bent.The insertion part structure is by being divided into two curved sections to snake bone, and using steel wire respectively control two curved sections and is deflected and is bent towards different direction, can improve the control precision of snake bone.The embodiment of the utility model also provides a kind of endoscope, including insertion part structure.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and more specifically, to an insertion part structure and an endoscope. Background Technology

[0002] An endoscope is an instrument that enters the human body through natural openings or surgical incisions to perform examinations and treatments. It has an optical lens and a light source, which can clearly observe the location and size of lesions inside the patient's body.

[0003] An endoscope generally consists of a handle and an insertion part. The insertion part is used to insert into the body cavity of the human body. The movement of the insertion part in the complex and curved body cavity is achieved by controlling the serpentine skeleton. However, most existing serpentine skeletons are made of multiple bone segments connected by rivets, which makes the operation difficult and cannot be precisely controlled. This causes the instrument to deviate from the predetermined point during surgery, affecting the accuracy of the surgery. Utility Model Content

[0004] This invention provides an insertion section structure and endoscope that can reduce the difficulty of operation, improve the fine control of the snake bone, and make the surgical operation more precise.

[0005] The embodiments of this utility model can be implemented as follows: An embodiment of this utility model provides an insertion part structure, which includes: First, the end; The snake bone includes a first curved section and a second curved section. One end of the first curved section is connected to the second curved section, and the other end of the first curved section is connected to the tip. The steel wire assembly comprises multiple steel wires, all of which are disposed inside the snake bone. At least some of the steel wires are connected to the first bending section so that the first bending section can bend in a first direction and a second direction, the first direction being perpendicular to the second direction. At least some of the steel wires are connected to the second bending section so that the second bending section can bend in a third direction and a fourth direction, the third direction being perpendicular to the fourth direction, and the third direction forming an angle with the first direction.

[0006] Optionally, the first curved section of the snake bone is provided with a first cutting groove and a second cutting groove, and the first cutting groove and the second cutting groove are alternately arranged along the length direction of the snake bone; Two first cutting grooves are symmetrically arranged along the same radial plane of the snake bone, so that the first curved section can bend in a first direction; two second cutting grooves are symmetrically arranged along the same radial plane of the snake bone, so that the first curved section can bend in a second direction.

[0007] Optionally, the second curved section of the snake bone is provided with a third cutting groove and a fourth cutting groove, which are alternately arranged along the length of the snake bone; Two third cutting grooves are symmetrically arranged along the same radial plane of the snake bone, so that the second curved segment can bend in the third direction; two fourth cutting grooves are symmetrically arranged along the same radial plane of the snake bone, so that the second curved segment can bend in the fourth direction.

[0008] Optionally, the snake bone is provided with a threading groove, and a wire threading ring is installed in the threading groove, through which the steel wire is threaded.

[0009] Optionally, the insertion section structure also includes an insertion tube and a threaded tube, with the threaded tube disposed inside the insertion tube, a steel wire passing through the threaded tube, and a snake bone connected to the insertion tube.

[0010] Optionally, the insertion tube is provided with a threaded tube positioning hole and a snake-bone positioning hole. The threaded tube is positioned through the threaded tube positioning hole, and the snake-bone is positioned through the snake-bone positioning hole.

[0011] Optionally, the snake bone is also fitted with a metal mesh sleeve and a rubber tube, with the rubber tube located outside the metal mesh sleeve.

[0012] Optionally, the snake bone is integrally formed by cutting, and the first cutting groove and the second cutting groove have the same groove shape, and / or the third cutting groove and the fourth cutting groove have the same groove shape.

[0013] Optionally, the angle formed by the first direction and the third direction is 45°.

[0014] An embodiment of this utility model also provides an endoscope, including: a first control knob, a second control knob, a third control knob and a fourth control knob, and the above-mentioned insertion part structure; The first control knob is connected to a portion of the steel wire and is used to drive the first bending segment to sway and bend in the first direction; the second control knob is connected to a portion of the steel wire and is used to drive the first bending segment to sway and bend in the second direction; the third control knob is connected to a portion of the steel wire and is used to drive the second bending segment to sway and bend in the third direction; the fourth control knob is connected to a portion of the steel wire and is used to drive the second bending segment to sway and bend in the fourth direction.

[0015] The beneficial effects of this utility model embodiment: The insertion device structure includes a tip, a snake-like bone, and a wire assembly. The snake-like bone includes a first curved segment and a second curved segment. One end of the first curved segment is connected to the second curved segment, and the other end of the first curved segment is connected to the tip. The wire assembly includes multiple wires, all of which are disposed inside the snake-like bone. At least some of the wires are connected to the first curved segment, allowing the first curved segment to bend and deflect in a first direction and a second direction, with the first direction perpendicular to the second direction. At least some of the wires are connected to the second curved segment, allowing the second curved segment to bend and deflect in a third direction and a fourth direction, with the third direction perpendicular to the fourth direction and forming an angle with the first direction. This insertion device structure improves the control precision of the snake-like bone by dividing it into two curved segments and using wires to control the deflection and bending of the two curved segments in different directions, thereby making the surgical operation more precise.

[0016] The endoscope includes an insertion section structure, which has all the functions of an insertion section structure. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the insertion part structure provided in an embodiment of the present utility model; Figure 2 This is a radial view of the insertion part structure provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the snake bone structure provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the first curved segment of the snake bone provided in an embodiment of this utility model; Figure 5 This is a schematic diagram of the second curved segment of the snake bone provided in an embodiment of the present invention; Figure 6 This is a schematic diagram showing the cooperation between the steel wire and the wire threading ring in an embodiment of this utility model; Figure 7 This is a schematic diagram of the wire-threading ring provided in an embodiment of the present invention.

[0019] Icons: 1-Tip; 2-Snake bone; 21-First bending section; 211-First cutting groove; 212-Second cutting groove; 22-Second bending section; 221-Third cutting groove; 222-Fourth cutting groove; 23-Passing ring groove; 24-Passing ring; 241-Wire bundle hole; 3-Wire assembly; 31-Wire; 4-Insert tube; 41-Screw tube positioning hole; 42-Snake bone positioning hole; 5-Threaded tube; D1-First direction; D2-Second direction; D3-Third direction; D4-Fourth direction. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0025] The terms “comprising,” “including,” or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0026] Unless otherwise explicitly specified and limited, terms such as "setup" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; 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 a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0028] As described in the background section, the insertion part of existing endoscopes is limited by its own structure, which makes it impossible for the snake bone 2 to bend in multiple segments during use. It is also impossible to control the tip 1 and the instruments carried to change position precisely during use. The operation is rough and the user experience is poor. It may even cause medical accidents such as surgical errors during surgery.

[0029] In view of the above reasons, the present invention provides an insertion part structure and an endoscope in the embodiments of the present invention, which can solve the above problems, and will be described in detail below.

[0030] Please refer to Figures 1 to 3 The insertion part structure includes a tip 1, a snake bone 2, and a wire assembly 3. The snake bone 2 includes a first curved section 21 and a second curved section 22. One end of the first curved section 21 is connected to the second curved section 22, and the other end of the first curved section 21 is connected to the tip 1. The wire assembly 3 includes multiple wires 31, all of which are disposed inside the snake bone 2. At least some of the wires 31 are connected to the first curved section 21 so that the first curved section 21 can bend in a first direction D1 and a second direction D2, with the first direction D1 and the second direction D2 being perpendicular. At least some of the wires 31 are connected to the second curved section 22 so that the second curved section 22 can bend in a third direction D3 and a fourth direction D4, with the third direction D3 and the fourth direction D4 being perpendicular, and the third direction D3 forming an angle with the first direction D1.

[0031] The insertion structure of this utility model first divides the snake bone 2 into two curved sections, and then uses steel wire 31 to control the two curved sections to bend in different directions. The two curved sections can be controlled independently, thereby increasing the control precision of the snake bone 2, which is beneficial to improving the operation precision of the surgery and providing a better user experience.

[0032] In this embodiment, the snake bone 2 is integrally formed by laser cutting. Grooves are cut on the thin metal tube to form a flexible snake bone 2. A transition section is provided between the first bending section 21 and the second bending section 22.

[0033] For details, please refer to Figure 4 The first curved section 21 of the snake bone 2 is provided with a first cutting groove 211 and a second cutting groove 212. The first cutting groove 211 and the second cutting groove 212 are alternately arranged along the length direction of the snake bone 2. Two first cutting grooves 211 are symmetrically opened on the same radial plane of the first curved section 21. The ends of the two first cutting grooves 211 are not connected. When the steel wire 31 is pulled, the first curved section 21 can bend in the first direction D1. Two second cutting grooves 212 are symmetrically opened on the same radial plane of the first curved section 21. The ends of the two second cutting grooves 212 are not connected. When the steel wire 31 is pulled, the first curved section 21 can bend in the second direction D2. The radial plane where the first cutting groove 211 is located and the radial plane where the second cutting groove 212 is located are radial planes of different parts of the snake bone 2.

[0034] refer to Figure 5 A third cutting groove 221 and a fourth cutting groove 222 are provided on the second curved section 22 of the snake bone 2. The third cutting groove 221 and the fourth cutting groove 222 are also alternately arranged along the length direction of the snake bone 2. Two third cutting grooves 221 are symmetrically opened on the same radial plane of the second curved section 22. The ends of the two third cutting grooves 221 are not connected. When the steel wire 31 is pulled, the second curved section 22 can bend in the third direction D3. Two fourth cutting grooves 222 are symmetrically opened on the same radial plane of the second curved section 22. The ends of the two fourth cutting grooves 222 are not connected. When the steel wire 31 is pulled, the second curved section 22 can bend in the fourth direction D4. The radial plane where the third cutting groove 221 is located and the radial plane where the fourth cutting groove 222 is located are radial planes of different parts of the snake bone 2.

[0035] Optionally, the first cutting groove 211 and the second cutting groove 212 on the snake bone 2 can have the same groove shape, and the third cutting groove 221 and the fourth cutting groove 222 can also have the same groove shape, which facilitates grooving and cutting.

[0036] refer to Figure 4 and Figure 5The ends of the first cutting groove 211, the second cutting groove 212, the third cutting groove 221 and the fourth cutting groove 222 are all provided with semi-circular grooves. The semi-circular grooves can avoid stress concentration when the snake bone 2 is bent, thereby improving the resistance performance of the snake bone 2.

[0037] In this embodiment, the first direction D1, the second direction D2, the third direction D3, and the fourth direction D4 refer to the directions in which the tip 1 swings left and right, up and down, or obliquely along the axis of the snake bone 2. The first direction D1 and the second direction D2 are perpendicular to each other, the third direction D3 and the fourth direction D4 are perpendicular to each other, and the third direction D3 forms an angle with the first direction D1, allowing the snake bone 2 to bend in any direction. For example, optionally, the angle formed by the first direction D1 and the third direction D3 is 45°. Figure 2 When the first direction D1 bends up and down along the axis of snake bone 2, the second direction D2 bends left and right along the axis of snake bone 2, the third direction D3 bends in the upper left and lower right direction along the axis of snake bone 2, and the fourth direction D4 bends in the upper right and lower left direction along the axis of snake bone 2.

[0038] The bending of the snake bone 2 requires the cooperation of the steel wire assembly 3, which includes multiple steel wires 31. These multiple steel wires 31 respectively drive the snake bone 2 to bend and sway in different directions. (Reference) Figure 6 In this embodiment, there are eight steel wires 31 in total. Four steel wires 31 extend to the head of the first bending section 21 (near the tip 1) after passing through the second bending section 22. These four steel wires 31 are evenly distributed inside the first bending section 21 and connected. The other four steel wires 31 extend to the second bending section 22 and are connected to the second bending section 22. The four steel wires 31 connected to the second bending section 22 are evenly distributed in the gaps between the other four steel wires 31 (the four steel wires 31 connected to the first bending section 21).

[0039] In this embodiment, the snake bone 2 is provided with a plurality of through-ring grooves 23. The snake bone 2 unit formed between the first cutting groove 211 and the second cutting groove 212 has at least two symmetrical through-ring grooves 23, so that two adjacent snake bone 2 units on the first curved section 21 have at least four through-ring grooves 23. Two third cutting grooves 221 on the same radial plane and two adjacent fourth cutting grooves 222 on the same radial plane form a snake-bone 2 unit. This snake-bone 2 unit has at least four loop grooves 23, two of which are coaxial with two loop grooves 23 in the snake-bone 2 unit of the first curved section 21, while the other two loop grooves are not coaxial with the other two loop grooves 23 in the snake-bone 2 unit of the first curved section 21. This facilitates the evenly spaced arrangement of eight steel wires 31, with four steel wires 31 simultaneously passing through the loop grooves 23 of the snake-bone 2 unit on the second curved section 22 and the first curved section 21, and the other four steel wires 31 only passing through the loop grooves 23 of the snake-bone 2 unit on the second curved section 22. (Reference) Figure 7 Each threading groove 23 is fixed with a threading ring 24 by welding or adhesive. The threading ring 24 is provided with a wire binding hole 241. The steel wire 31 passes through the wire binding hole 241 to limit the steel wire 31 to move only axially and not in other directions.

[0040] Optionally, the snake bone 2 is further fitted with a metal mesh sleeve and a rubber tube, with the rubber tube located outside the metal mesh sleeve. The metal mesh sleeve and the rubber tube reduce friction when the snake bone 2 bends. Since the installation of the metal mesh sleeve and the rubber tube is a common design in the field, it will not be described in detail here.

[0041] The tip 1 has an insertion hole, and the end of the snake bone 2 is inserted into the insertion hole and fixed to the tip 1. At the end away from the tip 1, the snake bone 2 is connected to the insertion tube 4. The insertion tube 4 has a snake bone positioning hole 42. The end of the snake bone 2 is inserted into the insertion tube 4 and connected by welding / bonding or other methods through the snake bone positioning hole 42. Multiple threaded tubes 5 are also arranged inside the insertion tube 4. Multiple threaded tube positioning holes 41 are provided on the insertion tube 4. The multiple threaded tubes 5 are evenly distributed inside the insertion tube 4 and connected by welding / bonding or other methods through the threaded tube positioning holes 41 to prevent the threaded tubes 5 from shifting and squeezing the instrument channel and wire. A steel wire 31 is threaded through the threaded tube 5, with one steel wire 31 corresponding to one threaded tube 5, so that the bending direction and bending amplitude of the snake bone 2 can be accurately controlled.

[0042] The insertion structure of this utility model uses multiple steel wires 31 to control the two curved sections of the snake bone 2, so that the two curved sections of the snake bone 2 can bend independently or in combination in any direction, thereby achieving precise control of the snake bone 2, which is beneficial to improving surgical accuracy and safety.

[0043] An embodiment of this utility model also provides an endoscope, including: a first control knob (not shown), a second control knob (not shown), a third control knob (not shown), and a fourth control knob (not shown), as well as the aforementioned insertion part structure.

[0044] The first control knob is connected to the first rotating wheel. A portion of the end of the steel wire 31 is wound around the first rotating wheel. Operating the first control knob rotates the first rotating wheel, causing the steel wire 31 wound around it to move axially, resulting in the first bent section 21 bending in the first direction D1. The second control knob is connected to the second rotating wheel. A portion of the end of the steel wire 31 is wound around the second rotating wheel. Operating the second control knob rotates the second rotating wheel, causing the steel wire 31 wound around it to move axially, resulting in the first bent section 21 bending in the second direction D2.

[0045] Similarly, the third control knob is connected to the third rotating wheel, and part of the end of the steel wire 31 is wound around the third rotating wheel. When the third control knob is operated, the third rotating wheel will rotate, and the rotation of the third rotating wheel will cause the steel wire 31 wound around it to move axially, causing the second bent section 22 to bend in the third direction D3. The fourth control knob is connected to the fourth rotating wheel, and part of the end of the steel wire 31 is wound around the fourth rotating wheel. When the fourth control knob is operated, the fourth rotating wheel will rotate, and the rotation of the fourth rotating wheel will cause the steel wire 31 wound around it to move axially, causing the second bent section 22 to bend in the fourth direction D4.

[0046] The first, second, third, and fourth control knobs are all mounted on the endoscope handle housing. The first, second, third, and fourth rotating wheels are all rotatably disposed inside the endoscope handle housing without interfering with each other. The endoscope handle housing and the first, second, third, and fourth rotating wheels disposed therein are common designs in the art and will not be described in detail here.

[0047] Other component settings for the endoscope can be based on existing designs and are considered prior art.

[0048] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An insertion part structure, characterized in that, include: First end (1); Snake bone (2), the snake bone (2) includes a first curved section (21) and a second curved section (22), one end of the first curved section (21) is connected to the second curved section (22) in a transmission connection, and the other end of the first curved section (21) is connected to the tip (1); The steel wire assembly (3) includes multiple steel wires (31), all of which are disposed inside the snake bone (2). At least a portion of the steel wires (31) are connected to the first bending segment (21) so that the first bending segment (21) can bend in a first direction (D1) and a second direction (D2), the first direction (D1) being perpendicular to the second direction (D2). At least a portion of the steel wires (31) are connected to the second bending segment (22) so that the second bending segment (22) can bend in a third direction (D3) and a fourth direction (D4), the third direction (D3) being perpendicular to the fourth direction (D4), and the third direction (D3) forming an angle with the first direction (D1).

2. The insertion part structure according to claim 1, characterized in that, The first curved section (21) of the snake bone (2) is provided with a first cutting groove (211) and a second cutting groove (212), and the first cutting groove (211) and the second cutting groove (212) are alternately arranged along the length direction of the snake bone (2); The two first cutting grooves (211) are symmetrically arranged along the same radial plane of the snake bone (2) so that the first curved segment (21) can bend in a first direction (D1); the two second cutting grooves (212) are symmetrically arranged along the same radial plane of the snake bone (2) so that the first curved segment (21) can bend in a second direction (D2).

3. The insertion part structure according to claim 2, characterized in that, The second curved section (22) of the snake bone (2) is provided with a third cutting groove (221) and a fourth cutting groove (222), and the third cutting groove (221) and the fourth cutting groove (222) are alternately arranged along the length direction of the snake bone (2); The two third cutting grooves (221) are symmetrically arranged along the same radial plane of the snake bone (2) so that the second curved segment (22) can bend in the third direction (D3); the two fourth cutting grooves (222) are symmetrically arranged along the same radial plane of the snake bone (2) so that the second curved segment (22) can bend in the fourth direction (D4).

4. The insertion part structure according to claim 1, characterized in that, The snake bone (2) is provided with a ring groove (23), and a wire ring (24) is installed in the ring groove (23). The steel wire (31) is threaded through the wire ring (24).

5. The insertion part structure according to claim 1, characterized in that, The insertion section structure also includes an insertion tube (4) and a threaded tube (5). The threaded tube (5) is disposed inside the insertion tube (4), the steel wire (31) passes through the threaded tube (5), and the snake bone (2) is connected to the insertion tube (4).

6. The insertion part structure according to claim 5, characterized in that, The insertion tube (4) is provided with a screw tube positioning hole (41) and a snake bone positioning hole (42). The screw tube (5) is positioned through the screw tube positioning hole (41), and the snake bone (2) is positioned through the snake bone positioning hole (42).

7. The insertion part structure according to claim 1, characterized in that, The snake bone (2) is also covered with a metal mesh sleeve and a rubber tube, with the rubber tube located outside the metal mesh sleeve.

8. The insertion part structure according to claim 3, characterized in that, The snake bone (2) is integrally formed by cutting, and the first cutting groove (211) and the second cutting groove (212) have the same groove shape, and / or the third cutting groove (221) and the fourth cutting groove (222) have the same groove shape.

9. The insertion part structure according to any one of claims 1-8, characterized in that, The angle between the first direction (D1) and the third direction (D3) is 45°.

10. An endoscope, characterized in that, include: The first control knob, the second control knob, the third control knob, and the fourth control knob, as well as the insertion part structure according to any one of claims 1-9; The first control knob is connected to a portion of the steel wire (31) and is used to drive the first bending segment (21) to sway and bend in the first direction (D1); the second control knob is connected to a portion of the steel wire (31) and is used to drive the first bending segment (21) to sway and bend in the second direction (D2); the third control knob is connected to a portion of the steel wire (31) and is used to drive the second bending segment (22) to sway and bend in the third direction (D3); the fourth control knob is connected to a portion of the steel wire (31) and is used to drive the second bending segment (22) to sway and bend in the fourth direction (D4).

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