Rotatable wiring structure and laryngoscope

Abstract

The utility model provides a rotatable wiring structure and anaesthetic video laryngoscope, this rotatable wiring structure includes connecting frame, main shaft, auxiliary shaft and threading sleeve, the middle part of connecting frame is rotatably connected on main shaft, auxiliary shaft and threading sleeve are rotatably connected in the both ends of connecting frame respectively, and the rotation axis of connecting frame is crossed with the rotation axis of threading sleeve and auxiliary shaft respectively, and the both ends of connecting frame are provided with mounting hole, and the hole diameter of mounting hole is changeable, one end of auxiliary shaft is inserted in one mounting hole, and the first preset friction force is between auxiliary shaft and the hole wall of corresponding mounting hole, the anaesthetic video laryngoscope includes display screen mounting seat, handle and above -mentioned rotatable wiring structure, and the auxiliary shaft of rotatable wiring structure is connected with display screen mounting seat, the utility model can prevent winding, and can ensure that display screen stops with rotation.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, specifically to a rotatable wiring structure and an anesthesia video laryngoscope. Background Technology

[0002] The anesthesia video laryngoscope is a Class II medical device approved by the drug regulatory authorities. It is mainly used in clinical procedures to lift the patient's epipharynx to expose the glottis, assisting medical staff in performing precise airway intubation. The device consists of a high-definition camera, a display screen, replaceable laryngoscope blades, and an ergonomic handle. It enables visualized operation through real-time image transmission and is adaptable to the different anatomical needs of adults and children.

[0003] The display screen of existing anesthesia video laryngoscopes can rotate both horizontally and vertically. During rotation, the internal cables are prone to tangling and knotting, affecting the reliability of the cable connections. Moreover, due to the lack of a drag-resistance structure, when the display screen rotates vertically, it tends to continue rotating at a certain angle due to inertia, making it difficult to stop at the required angle and causing inconvenience to medical staff. Utility Model Content

[0004] The primary objective of this invention is to provide a rotatable wiring structure that can prevent wire tangling and ensure that the display screen can be rotated and stopped at will.

[0005] The second objective of this invention is to provide an anesthesia video laryngoscope that includes the above-mentioned rotatable wiring structure.

[0006] To achieve the aforementioned first objective, this utility model provides a rotatable wiring structure, including a connecting frame, a main shaft, a secondary shaft, and a threading sleeve. The middle part of the connecting frame is rotatably connected to the main shaft, and the secondary shaft and the threading sleeve are rotatably connected to both ends of the connecting frame. The rotation axis of the connecting frame intersects the rotation axis of the threading sleeve and the secondary shaft, respectively. Both ends of the connecting frame are provided with mounting holes, and the diameter of the mounting holes is variable. One end of the secondary shaft is inserted into one of the mounting holes, and there is a first preset frictional force between the secondary shaft and the hole wall of the corresponding mounting hole.

[0007] As can be seen from the above scheme, with the above settings, the connecting frame can rotate horizontally around the main shaft, and the secondary shaft and the threading sleeve can rotate around their own axis. This allows the display screen of the anesthesia video laryngoscope to be flexibly adjusted to a suitable angle, making it convenient for medical staff to observe the display screen from multiple angles. In addition, by setting the diameter of the mounting hole to be variable, it is not only convenient for the secondary shaft and the threading sleeve to be installed smoothly, but also helps to enhance the clamping effect of the mounting hole wall on the secondary shaft and the threading sleeve, thereby increasing the friction between the two and ensuring that the display screen of the anesthesia video laryngoscope can be rotated and stopped at will, effectively avoiding the problem of excessive rotation caused by inertia.

[0008] A further option is to design the mounting hole as a closed structure in its circumferential direction, and the wall of the mounting hole can be elastically deformed outward as a whole; or, the mounting hole has a gap in its circumferential direction, and free ends are provided on both sides of the gap, and the free ends can elastically deform along the radial direction of the mounting hole.

[0009] A further embodiment is that the two mounting holes are a first mounting hole and a second mounting hole, one end of the sub-shaft is inserted into the first mounting hole, and one end of the threading sleeve is inserted into the second mounting hole. There is a second preset friction force between the threading sleeve and the hole wall of the second mounting hole, and the first preset friction force is greater than or equal to the second preset friction force. A further proposed solution is that the contact area between the secondary shaft and the wall of the first mounting hole is greater than or equal to the contact area between the threaded sleeve and the wall of the second mounting hole.

[0010] A further embodiment is that the secondary shaft includes a first cylinder, a limiting part, and a mounting part arranged sequentially. The first cylinder mates with a first mounting hole, the limiting part protrudes beyond the first mounting hole, and two stop surfaces are spaced apart in the circumferential direction of the limiting part. A first limiting protrusion is provided on the outer side of the end of the first mounting hole, and the first limiting protrusion is located between the two stop surfaces and can abut against either stop surface.

[0011] As can be seen from the above scheme, by setting a limiting part, it can rotate between two stop surfaces, thereby limiting the maximum rotation angle of the connecting frame in the vertical direction.

[0012] A further embodiment is that the threading sleeve includes a second cylinder and a polygonal cylinder. The second cylinder mates with a second mounting hole, and the polygonal cylinder protrudes beyond the second mounting hole. The threading sleeve has a first threading hole along its axial direction, and the main shaft has a second threading hole along its axial direction. The outlet end of the first threading hole is close to the inlet end of the second threading hole.

[0013] As can be seen from the above solution, after the display cable passes through the first through hole, it enters the second through hole and then extends into the handle. Through the above setting, problems such as tangling and twisting of the cable when the display rotates up and down or left and right can be effectively avoided.

[0014] A further embodiment is that the connecting frame has a connecting part in the middle, the connecting part has a central hole and multiple grooves, and the multiple grooves are arranged circumferentially along the central hole; the rotatable wiring structure also includes a first limiting member sleeved on the main shaft, and a first protrusion is provided on one side of the first limiting member. The first limiting member can rotate with the main shaft relative to the connecting frame, so that the first protrusion abuts against the groove wall, or the first protrusion abuts against the position between two adjacent grooves.

[0015] As can be seen from the above solution, with the above settings, users will get a clear sense of pause when controlling the horizontal rotation of the display screen, which allows users to intuitively perceive the rotation angle, thereby controlling the device more accurately and conveniently.

[0016] A further option is that the rotatable wiring structure also includes an elastic element and a second limiting element both mounted on the main shaft. The second limiting element is located on the side of the first limiting element facing away from the connecting part, and the elastic element elastically abuts against the second limiting element and the first limiting element.

[0017] A further option is to provide a second limiting protrusion in the middle of the connecting frame; the rotatable wiring structure also includes a third limiting member sleeved on the spindle, the third limiting member having a second protrusion, the third limiting member being able to rotate relative to the connecting frame with the spindle, so that the second protrusion can abut against the second limiting protrusion.

[0018] As can be seen from the above scheme, the above settings make it easy to limit the maximum rotation angle of the display screen in the horizontal direction.

[0019] To achieve the second objective mentioned above, this utility model provides an anesthesia video laryngoscope, including a display screen mounting base, a display screen, a handle, and the aforementioned rotatable wiring structure. The display screen mounting base is connected to the secondary shaft of the rotatable wiring structure, and the handle is connected to the end of the main shaft of the rotatable wiring structure away from the secondary shaft. The display screen is mounted on the display screen mounting base, and the cable of the display screen passes through the cable sleeve of the rotatable wiring structure and the main shaft into the handle. Attached Figure Description

[0020] Figure 1 This is a structural diagram of an embodiment of the rotatable wiring structure of this utility model.

[0021] Figure 2 This is an exploded view of an embodiment of the rotatable wiring structure of this utility model.

[0022] Figure 3 This is a cross-sectional view of an embodiment of the rotatable wiring structure of this utility model.

[0023] Figure 4 This is a structural diagram of the connecting frame in an embodiment of the rotatable wiring structure of this utility model.

[0024] Figure 5 This is a structural diagram of the first limiting member in an embodiment of the rotatable wiring structure of this utility model.

[0025] Figure 6 This is a structural diagram of the secondary shaft in an embodiment of the rotatable wiring structure of this utility model.

[0026] Figure 7 This is a structural diagram of an embodiment of the anesthesia video laryngoscope of this utility model, omitting the display screen.

[0027] Figure 8 This is a structural diagram of the first housing, the second housing, the handle mounting base, and the rotatable wiring structure in an embodiment of the anesthesia video laryngoscope of this utility model.

[0028] Figure 9 This is an exploded view of the first housing, the second housing, the handle mounting base, and the rotatable wiring structure in an embodiment of the anesthesia video laryngoscope of this utility model.

[0029] Explanation of reference numerals in the attached figures: 1-Connecting bracket, 11-Connecting part, 111-Center hole, 112-Groove, 113-Second limiting protrusion, 12-First sleeve part, 121-First mounting hole, 122-First limiting protrusion, 13-Second sleeve part, 131-Second mounting hole, 14-Gap; 2-Main spindle, 21-Second threading hole; 3-Secondary shaft, 31-First cylinder, 32-Limiting part, 321-Stop surface, 33-Mounting part, 331-Third mounting hole; 4-Threading sleeve, 41-First threading hole, 42-Second cylinder, 43-Polygonal cylinder; 5-First limiting member, 51-First protrusion; 6-Elastic element; 7-Third limiting member, 71-Second protrusion, 711-Limiting surface; 8-Second limiting component; 9-Display screen mounting bracket, 91-Third wiring hole, 92-Locking hole; 10-Handle; 20 - First shell; 30 - Second shell; 40 - Third shell; 50-Handle Mount; 60-Connecting sleeve; 70-kit.

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0031] Example of a rotatable wiring structure: See Figures 1 to 3 The rotatable wiring structure provided in this embodiment includes a connecting frame 1, a main shaft 2, a secondary shaft 3, and a threading sleeve 4.

[0032] The main shaft 2 extends in the vertical direction, and a second threading hole 21 is provided along its axial direction. The second threading hole 21 passes through the main shaft 2 vertically.

[0033] The connecting frame 1 can be made of plastic or metal. The connecting frame 1 includes a connecting part 11 and two sleeve parts, which are respectively connected to the left and right sides of the connecting part 11. The connecting part 11 is rotatably fitted onto the upper part of the main shaft 2, allowing the entire connecting frame 1 to rotate horizontally around the main shaft 2. Each sleeve part has a mounting hole that extends axially along the sleeve part, and the diameter of the mounting hole is variable.

[0034] In one embodiment, the wall of the mounting hole is made of plastic material, and the mounting hole is a closed structure in its circumferential direction. The wall of the mounting hole can elastically deform outward as a whole. When the wall of the mounting hole elastically deforms outward as a whole, the wall can apply multiple rebound forces in the opposite direction into the mounting hole. The multiple rebound forces are evenly spaced along the circumferential direction, and the magnitude of the multiple rebound forces is the same.

[0035] In this embodiment, the connecting frame 1 is made of metal or other rigid materials. A slit 14 is provided in the circumferential direction of the mounting hole, extending axially along the mounting hole. Free ends are provided on both sides of the slit 14, and each free end can elastically deform radially along the mounting hole. When the free end elastically deforms outward, it can apply a rebound force in the mounting hole. The magnitude of the rebound force is related to the degree of deformation; the greater the degree of deformation, the greater the rebound force.

[0036] For ease of explanation, the two sleeve parts are named the first sleeve part 12 and the second sleeve part 13, respectively, and the two mounting holes are named the first mounting hole 121 and the second mounting hole 131, respectively. The first mounting hole 121 is located in the first sleeve part 12, and the second mounting hole 131 is located in the second sleeve part 13.

[0037] One end of the secondary shaft 3 is rotatably inserted into the first mounting hole 121, and one end of the threading sleeve 4 is rotatably inserted into the second mounting hole 131. The rotation axis of the connecting frame 1 intersects with the respective rotation axes of the secondary shaft 3 and the threading sleeve 4, preferably perpendicularly.

[0038] The secondary shaft 3 has a first preset frictional force with the wall of the first mounting hole 121, and the threading sleeve 4 has a second preset frictional force with the wall of the second mounting hole 131.

[0039] When the secondary shaft 3 and the threading sleeve 4 rotate relative to the connecting frame 1, the friction between them is large, which can overcome their rotational inertia and ensure that the secondary shaft 3 and the threading sleeve 4 can stop as they rotate and maintain the current angle for a long time.

[0040] In one embodiment, the first preset frictional force is greater than or equal to the second preset frictional force. Specifically, the contact area between the secondary shaft 3 and the wall of the first mounting hole 121 is greater than or equal to the contact area between the threaded sleeve 4 and the wall of the second mounting hole 131.

[0041] The threading sleeve 4 has a first threading hole 41 along its axial direction, and the outlet end of the first threading hole 41 is close to the inlet end of the second threading hole 21. There is a suitable distance between the outlet end of the first threading hole 41 and the inlet end of the second threading hole 21 to facilitate the threading operation of the operator.

[0042] See Figure 4 and Figure 5 and combined Figure 2 The connecting part 11 has a central hole 111 and four grooves 112. The four grooves 112 are evenly spaced along the circumference of the central hole 111, and each groove 112 is recessed into the upper surface of the connecting part 11.

[0043] The rotatable wiring structure also includes a first limiting member 5 sleeved on the main shaft 2, which is positioned above the connecting portion 11. Two first protrusions 51 are provided on the lower side of the first limiting member 5, and these two protrusions 51 are evenly spaced along the circumference of the first limiting member 5. The first limiting member 5 can rotate relative to the connecting frame 1 with the main shaft 2, such that the first protrusions 51 abut against the groove wall of the groove 112, or the first protrusions 51 abut against the position between two adjacent grooves 112. When the first protrusion 51 is inserted into the corresponding groove 112, the first protrusion 51 abuts against the groove wall of the groove 112; when the first protrusion 51 moves out of the corresponding groove 112, the first protrusion 51 abuts against the position between two adjacent grooves 112.

[0044] The rotatable wiring structure also includes an elastic element 6 and a second limiting element 8, both mounted on the main shaft 2. The second limiting element 8 is fixedly connected to the main shaft 2 and is located on the side of the first limiting element 5 facing away from the connecting part 11. The elastic element 6 elastically abuts against the second limiting element 8 and the first limiting element 5, and the elastic element 6 can apply a downward elastic force to the first limiting element 5. The second limiting element 8 can be a nut or a washer, which is not limited here.

[0045] The middle part of the connecting frame 1 is also provided with a second limiting protrusion 113, which is located on the outer periphery of the bottom wall of the connecting part 11.

[0046] The rotatable wiring structure also includes a third limiting member 7 sleeved on the spindle 2, located below the connecting part 11. The third limiting member 7 has a second protrusion 71 that protrudes from the peripheral wall of the third limiting member 7, and limiting surfaces 711 are provided on both sides of the second protrusion 71 in the circumferential direction. The third limiting member 7 can rotate relative to the connecting frame 1 along with the spindle 2. When the third limiting member 7 rotates forward, the second limiting protrusion 113 abuts against one of the limiting surfaces 711; when the third limiting member 7 rotates in the reverse direction, the second limiting protrusion 113 abuts against the other limiting surface 711, thus limiting its maximum rotation angle in the horizontal direction.

[0047] Combination Figure 2 and Figure 7 In this design, the threading sleeve 4 includes a second cylinder 42 and a polygonal cylinder 43, which are coaxially arranged and integrally formed. The second cylinder 42 mates with the second mounting hole 131, and the outer diameter of the second cylinder 42 is equal to or slightly larger than the inner diameter of the second mounting hole 131, and the second cylinder 42 can rotate relative to the second mounting hole 131. The polygonal cylinder 43 protrudes beyond the second mounting hole 131, and the polygonal cylinder 43 is preferably a hexagonal cylinder, which facilitates its connection with the display screen mounting base 9 of the anesthesia video laryngoscope.

[0048] See Figure 6 and combined Figure 4 The secondary shaft 3 includes an integrally formed first cylinder 31, a limiting part 32, and a mounting part 33. The limiting part 32 is disposed between the first cylinder 31 and the mounting part 33. The first cylinder 31 mates with a first mounting hole 121. The outer diameter of the first cylinder 31 is equal to or slightly larger than the inner diameter of the first mounting hole 121, and the first cylinder 31 can rotate relative to the first mounting hole 121. The limiting part 32 protrudes beyond the first mounting hole 121, and two stop surfaces 321 are provided at intervals in the circumferential direction of the limiting part 32. A third mounting hole 331 is provided on the mounting part 33.

[0049] A first limiting protrusion 122 is provided on the outer side of the end of the first mounting hole 121. Preferably, the first limiting protrusion 122 is provided on the end face of the first sleeve portion 12. The first limiting protrusion 122 can be embedded between two stop surfaces 321. When the secondary shaft 3 rotates forward relative to the first sleeve portion 12, the first limiting protrusion 122 can abut against one of the stop surfaces 321; when the secondary shaft 3 rotates in the opposite direction relative to the first sleeve portion 12, the first limiting protrusion 122 can abut against the other stop surface 321 to limit its maximum rotation angle.

[0050] To facilitate the insertion of the first cylinder 31 into the first mounting hole 121, a plane can be provided on the peripheral wall of the first cylinder 31, and the distance from the plane to the center of the first cylinder 31 is less than the radius of the first cylinder 31.

[0051] Example of anesthesia video laryngoscopy: See Figures 7 to 9 The anesthesia video laryngoscope provided in this embodiment includes a display screen mounting base 9, a display screen (not shown in the figure), a handle 10, and a rotatable wiring structure as described in the above embodiment. The display screen mounting base 9 is connected to the secondary shaft 3 and the threading sleeve 4 of the rotatable wiring structure, and the handle 10 is connected to the end of the main shaft 2 of the rotatable wiring structure away from the secondary shaft 3. The display screen is mounted on the display screen mounting base 9, and the display screen cable (not shown in the figure) passes through the threading sleeve 4 and the main shaft 2 of the rotatable wiring structure and enters the handle 10.

[0052] The anesthesia video laryngoscope also includes a first housing 20, a second housing 30, a third housing 40, and a hollow kit 70. The first housing 20 and the second housing 30 are arranged opposite each other and form a chamber, in which a portion of the rotatable wiring structure is disposed.

[0053] The display mounting base 9 has a third cable pass-through hole 91, within which a kit 70 is installed. The kit 70 has a polygonal hole on its inner side, which matches the polygonal column 43 of the cable pass-through sleeve 4. The kit 70 is located at the ends of the first housing 20 and the second housing 30 and communicates with the first cable pass-through hole 41 of the rotatable wiring structure. Cables leading from the first cable pass-through hole 41 pass through the kit 70 and are electrically connected to the display screen. The kit 70 is made of metal, preferably copper. The kit 70 enhances the connection strength between the rotatable wiring structure and the display mounting base 9, providing reliable support for the rotatable wiring structure and its internal wiring, thus mitigating the risk of damage during rotation.

[0054] The third housing 40 is disposed at one end of the first housing 20 near the secondary shaft 3, and the third housing 40 has an opening on the side facing the second housing 30. One end of the secondary shaft 3 of the rotatable wiring structure extends into the third housing 40.

[0055] The display mounting base 9 is also provided with a locking hole 92, which is connected to the third mounting hole 331 of the sub-shaft 3 through the connecting sleeve 60. The display mounting base 9, the connecting sleeve 60, and the sub-shaft 3 are fixed together by screws (not shown in the figure), which pass through the locking hole 92 and the connecting sleeve 60 and are connected in the third mounting hole 331.

[0056] In summary, through the above-described configuration, the connecting frame 1 can rotate horizontally around the main shaft 2, while the secondary shaft 3 and the threading sleeve 4 can rotate vertically around their own axes. This ensures that the display screen of the anesthesia video laryngoscope can be flexibly adjusted to a suitable angle, facilitating observation of the display screen by medical personnel from multiple angles. Furthermore, by enabling the free end to have elastic deformation capability in the radial direction of the mounting hole, it facilitates the smooth installation of the secondary shaft 3 and the threading sleeve 4, and also enhances the clamping effect of the mounting hole wall on the secondary shaft 3 and the threading sleeve 4, thereby increasing the friction between them. This ensures that the display screen of the anesthesia video laryngoscope can stop as it rotates, effectively avoiding excessive rotation caused by inertia.

[0057] Finally, it should be emphasized that the above are only preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotatable wiring structure, comprising a connecting frame, a main shaft, a secondary shaft, and a threading sleeve, wherein the middle portion of the connecting frame is rotatably connected to the main shaft, and the secondary shaft and the threading sleeve are rotatably connected to both ends of the connecting frame, and the rotation axis of the connecting frame intersects the rotation axes of the threading sleeve and the secondary shaft, respectively, characterized in that: Both ends of the connecting frame are provided with mounting holes, and the diameter of the mounting holes is variable; One end of the sub-shaft is inserted into one of the mounting holes, and the sub-shaft has a first preset frictional force with the hole wall corresponding to the mounting hole.

2. The rotatable wiring structure according to claim 1, characterized in that: The mounting hole is a closed structure in its circumferential direction, and the hole wall of the mounting hole can be elastically deformed outward as a whole; Alternatively, the mounting hole may have a slit in its circumferential direction, and free ends may be provided on both sides of the slit, the free ends being capable of elastic deformation along the radial direction of the mounting hole.

3. The rotatable wiring structure according to claim 1, characterized in that: The two mounting holes are a first mounting hole and a second mounting hole, one end of the sub-shaft is inserted into the first mounting hole, and one end of the threading sleeve is inserted into the second mounting hole. There is a second preset friction force between the threading sleeve and the hole wall of the second mounting hole, and the first preset friction force is greater than or equal to the second preset friction force.

4. The rotatable wiring structure according to claim 3, characterized in that: The contact area between the secondary shaft and the wall of the first mounting hole is greater than or equal to the contact area between the threading sleeve and the wall of the second mounting hole.

5. The rotatable wiring structure according to claim 3, characterized in that: The secondary shaft includes a first cylinder, a limiting part, and a mounting part arranged sequentially. The first cylinder mates with the first mounting hole, the limiting part protrudes beyond the first mounting hole, and the limiting part has two stop surfaces spaced apart in the circumferential direction. A first limiting protrusion is provided on the outer side of the end of the first mounting hole. The first limiting protrusion is disposed between the two stop surfaces and can abut against either of the stop surfaces.

6. The rotatable wiring structure according to claim 3, characterized in that: The threading sleeve includes a second cylinder and a polygonal cylinder, the second cylinder mates with the second mounting hole, and the polygonal cylinder protrudes beyond the second mounting hole; The threading sleeve has a first threading hole along its axial direction, and the main shaft has a second threading hole along its axial direction. The outlet end of the first threading hole is close to the inlet end of the second threading hole.

7. The rotatable wiring structure according to any one of claims 1 to 5, characterized in that: The connecting frame has a connecting part in the middle, and the connecting part has a central hole and multiple grooves, with the multiple grooves arranged circumferentially along the central hole; The rotatable wiring structure further includes a first limiting member sleeved on the main shaft. A first protrusion is provided on one side of the first limiting member. The first limiting member can rotate with the main shaft relative to the connecting frame, such that the first protrusion abuts against the groove wall of the groove, or the first protrusion abuts against the position between two adjacent grooves.

8. The rotatable wiring structure according to claim 7, characterized in that: The rotatable wiring structure further includes an elastic element and a second limiting element both disposed on the main shaft. The second limiting element is disposed on the side of the first limiting element facing away from the connecting portion, and the elastic element elastically abuts against the second limiting element and the first limiting element.

9. The rotatable wiring structure according to any one of claims 1 to 5, characterized in that: The middle part of the connecting frame is also provided with a second limiting protrusion; The rotatable wiring structure also includes a third limiting member sleeved on the main shaft. The third limiting member is provided with a second protrusion. The third limiting member can rotate relative to the connecting frame with the main shaft, so that the second protrusion can abut against the second limiting protrusion.

10. Anesthesia video laryngoscope, characterized in that: The device includes a display screen mounting base, a display screen, a handle, and a rotatable wiring structure as described in any one of claims 1 to 9. The display screen mounting base is connected to the secondary shaft of the rotatable wiring structure, and the handle is connected to the end of the main shaft of the rotatable wiring structure away from the secondary shaft. The display screen is mounted on the display screen mounting base, and the cable of the display screen passes through the cable sleeve of the rotatable wiring structure and the main shaft into the handle.

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