Laryngoscope tool and locking joint

Abstract

The present application belongs to the technical field of laryngoscope operation tools, and particularly relates to a laryngoscope tool and a locking joint, which comprises a fixing seat, a rotating seat, a second rotating head and a pushing assembly. A plurality of inner tooth grooves are arranged in the circumferential direction on the inner wall of the mounting hole at the front end of the fixing seat. The movable locking tooth head arranged in the mounting hole is in engagement with the inner tooth grooves. The outer convex teeth of the movable locking tooth head are in engagement with or separated from the locking tooth grooves when the movable locking tooth head is inserted into or pulled out of the second rotating head. The pushing assembly is arranged to control the sliding of the movable locking tooth head. When the telescopic column slides forward and backward, the movable locking tooth head is inserted into or pulled out of the second rotating head. The rotating seat is fixedly connected with the second rotating head. The locking joint of the present application is internally arranged, so that the volume is smaller and the locking joint is suitable for application on the laryngoscope tool. In addition, the engagement and disengagement of the outer convex teeth of the second rotating head with the locking tooth grooves makes the locked state more stable and the unlocked state more free.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of laryngoscope surgical tools, and particularly relates to a laryngoscope tool and a locking joint. BACKGROUND

[0002] During laryngoscope surgery, the laryngoscope surgical tool often needs to be changed to different angles and maintained. In the prior art, due to the fixed angle of the bending part of the laryngoscope surgical tool, the laryngoscope surgical tool often cannot be changed in angle, and the medical staff needs to adjust the hand to change the position of the laryngoscope surgical tool. This method often has dead angles and is inconvenient, and cannot meet the needs in the actual surgical process. If a bendable joint is used to change the angle of the laryngoscope surgical tool, how to lock the position of the joint is a problem that must be solved.

[0003] The existing locking mechanism, such as a door lock and a universal wheel locking structure, often needs to be installed to a specified position before being locked. If a braking mechanism is used to replace the locking mechanism and braking is achieved through electromagnetic, friction or mechanical interference, the problem of difficulty in maintaining the braking state after braking exists. At the same time, the existing locking mechanism also has the problem of being too large and not suitable for laryngoscope surgical tools. SUMMARY

[0004] In order to solve the above problems existing in the prior art, the present application provides a laryngoscope tool and a locking joint.

[0005] The technical scheme adopted by the present application is as follows:

[0006] A locking joint, comprising a fixed seat, a rotating seat, a second rotating head and a pushing assembly;

[0007] The front end of the fixed seat is provided with a mounting hole, and the center line of the mounting hole is arranged along the left-right direction. A plurality of inner tooth grooves are arranged around the inner wall of the mounting hole. An active lock tooth head is arranged in the mounting hole, and the outer convex teeth on the outer wall of the active lock tooth head are engaged with the inner tooth grooves, and the active lock tooth head can move left and right in the mounting hole.

[0008] The second rotating head is in rotating cooperation with the fixed seat and coaxial with the mounting hole. The outer wall of the active lock tooth head is provided with outer convex teeth and a limiting ring groove. A plurality of lock tooth grooves are arranged on the inner wall of the second rotating head. When the active lock tooth head is inserted into the second rotating head, the outer convex teeth are engaged with the lock tooth grooves. When the active lock tooth head is pulled out of the second rotating head, the outer convex teeth are separated from the lock tooth grooves.

[0009] The toggle assembly comprises a sliding toggle, a connecting rod and an extension column; the sliding toggle is slidably arranged in the fixed seat, a toggle fork is arranged on the front side of the sliding toggle, the toggle fork extends into the limiting ring groove to control the axial sliding of the movable lock tooth head; the front end of the extension column is connected with the sliding toggle through the connecting rod; when the extension column slides forward and backward in the fixed seat, the sliding position of the sliding toggle can be controlled to make the movable lock tooth head inserted into or pulled out of the second rotating head;

[0010] The rotating seat is arranged on the front side of the fixed seat, and the rear end of the rotating seat is fixedly connected with the second rotating head.

[0011] As an alternative or supplement to the above-mentioned locking joint: a fixed lock tooth head is further arranged in the mounting hole, a fixed protrusion on the outer wall of the right end of the fixed lock tooth head engages with the inner tooth groove in the mounting hole, and the left end of the fixed lock tooth head is rotatably connected with the first rotating head; the first rotating head is coaxial with the second rotating head and is fixedly connected with the rotating seat.

[0012] As an alternative or supplement to the above-mentioned locking joint: a plurality of grooves are arranged on the outer wall of the left end of the fixed lock tooth, a positioning hole is arranged on the inner hole wall of the central hole of the first rotating head, a limiting pin and a spring are arranged in the positioning hole, and the spring abuts against the limiting pin into the groove.

[0013] As an alternative or supplement to the above-mentioned locking joint: the mounting hole is sequentially divided into a first hole section, a second hole section, a third hole section and a fourth hole section along the axial direction of the mounting hole; the first rotating head is arranged in the first hole section, the fixed lock tooth is arranged in the second hole section, the movable lock tooth is arranged in the third hole section, the second rotating head is arranged in the fourth hole section, and the inner tooth grooves are arranged on the inner walls of the second hole section and the third hole section.

[0014] As an alternative or supplement to the above-mentioned locking joint: a separation ring is arranged between the first rotating head and the second rotating head, the separation ring is fixed between the second hole section and the third hole section; a guide rod is further arranged in the fixed seat, and the sliding toggle and the guide rod are in sliding cooperation.

[0015] As an alternative or supplement to the above-mentioned locking joint: the rear end of the rotating seat is provided with a U-shaped seat, opposite inner sides of two ends of the U-shaped seat are provided with alignment protrusions, and the two alignment protrusions are engaged with the first rotating head and the second rotating head respectively.

[0016] As an alternative or supplement to the above-mentioned locking joint: an extension sleeve is arranged on the rear end of the fixed seat, the rear end of the extension column extends out of the fixed seat and is fixedly connected with the extension sleeve; the extension sleeve can move forward and backward relative to the fixed seat.

[0017] As the alternative or supplement of the above locking joint: the locking buckle embedding groove is arranged on the side wall of the fixed seat, the elastic locking buckle is arranged in the locking buckle embedding groove, the reverse tooth is arranged on the elastic locking buckle, the annular groove is arranged on the inner wall of the telescopic sleeve, and the reverse tooth on the elastic locking buckle can be inserted into the annular groove to limit the front and back movement of the telescopic sleeve; the positioning ring is arranged on the rear end of the fixed seat, the through hole is arranged on the positioning ring, one end of the elastic locking buckle extends from the through hole and is connected with the pressing cap.

[0018] As the alternative or supplement of the above locking joint: the fixed seat comprises a first fixed petal and a second fixed petal, and the first fixed petal and the second fixed petal can be spliced and folded towards opposite directions; the front end of the first fixed petal and the front end of the second fixed petal are both provided with semicircular handle portions, and the semicircular handle portions are folded to form the mounting hole between the two semicircular handle portions.

[0019] A laryngoscope tool comprises a laryngoscope operation end, a handheld rod and the above locking joint; the laryngoscope operation end is fixedly connected with the rotating seat through bolts, and the handheld rod is fixedly connected with the telescopic sleeve through bolts.

[0020] The laryngoscope tool has the following beneficial effects:

[0021] The locking joint of the scheme realizes the locking of the parts in the locking joint, so that the volume is smaller, and the laryngoscope tool is suitable for application; in addition, the external convex tooth and the locking tooth groove are engaged and separated when the second rotating head moves forward and backward, so that the locked state is more stable, and the unlocked state is more free; in the scheme, the second rotating head moves left and right by controlling the second rotating head to move left and right through the forward and backward movement of the driving assembly, and the locking and unlocking of the locking joint are realized by the displacement of the telescopic column in the forward and backward directions, so that the width of the locking joint is reduced, and the influence of the external diameter of the laryngoscope tool on the laryngoscope surgery is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the scheme or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced.

[0023] Figure 1 is a structure schematic view of the laryngoscope tool in the scheme;

[0024] Figure 2 is a structure schematic view of the locking joint in the scheme;

[0025] Figure 3 is an exploded structure view of the locking joint in the scheme;

[0026] Figure 4 is a cooperation structure view of the driving assembly and the movable locking tooth head and other components;

[0027] Figure 5 is a sectional view of the locking joint in the scheme;

[0028] Figure 6 is Figure 5 a partial structural view in the scheme.

[0029] In the figure: 1-rotating seat; 101-U-shaped seat; 102-alignment protrusion; 2-fixed seat; 201-first fixed petal; 202-second fixed petal; 203-semi-circular handle; 204-first hole section; 205-second hole section; 206-third hole section; 207-fourth hole section; 208-locking fitting groove; 3-elastic lock; 4-pressing cap; 5-telescopic sleeve; 6-positioning ring; 7-first rotating head; 8-telescopic column; 9-sliding shift block; 901-shifting fork; 10-second rotating head; 1001-locking tooth groove; 11-movable locking tooth head; 1101-limiting ring groove; 1102-outer convex tooth; 12-fixed locking tooth head; 1201-fixed convex tooth; 13-limiting nail; 14-isolation ring; 15-connecting rod; 16-guiding rod; 17-telescopic spring; 18-laryngoscope operating end; 19-bolt; 20-handheld rod. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments will be described clearly and completely below with reference to the drawings. The described embodiments are only some of the embodiments, not all, and all other embodiments obtained by those of ordinary skill in the art based on the embodiments in the scheme without creative labor fall within the protection scope of the scheme.

[0031] Embodiment 1

[0032] As shown in Figures 1 to 5 , the embodiment designs a locking joint, which includes a fixed seat 2, a rotating seat 1, a second rotating head 10, a shifting assembly and the like. The front end in Embodiment 1 and Embodiment 2 is the end close to the laryngoscope operating end 18, and the rear end is the end close to the handheld rod 20.

[0033] The fixed seat 2 is a structure with a length in the front-rear direction greater than its width in the left-right direction. An installation hole is provided at the front end of the fixed seat 2. The installation hole is a through hole and is used for mounting the second rotating head 10 and other components. The center line of the installation hole is arranged in the left-right direction and can be perpendicular to the length direction of the fixed seat 2. A plurality of inner tooth grooves are arranged around the inner wall of the installation hole. The movable locking tooth head 11 can engage with the inner tooth grooves to prevent the movable locking tooth head 11 from rotating in the installation hole. The movable locking tooth head 11 is arranged in the installation hole. The outer convex teeth 1102 on the outer wall of the movable locking tooth head 11 engage with the inner tooth grooves to prevent the movable locking tooth head 11 from rotating. At the same time, the outer convex teeth 1102 are in clearance fit with the inner tooth grooves, so that the movable locking tooth head 11 can move in the left-right direction in the installation hole.

[0034] The second rotating head 10 is in rotating fit with the fixed seat 2. The second rotating head 10 is in the shape of a circular ring arc circle pie. One end of the second rotating head 10 extends into the installation hole, and the other end extends out of the installation hole. The second rotating head 10 is coaxial with the installation hole and can rotate in the forward and reverse directions relative to the fixed seat 2. The outer wall of the right end of the movable locking tooth head 11 is provided with outer convex teeth 1102, and the outer wall of the left end is provided with a limiting ring groove 1101. A plurality of locking tooth grooves 1001 are arranged on the inner wall of the center hole of the second rotating head 10. When the right end of the movable locking tooth head 11 is inserted into the second rotating head 10, the outer convex teeth 1102 engage with the locking tooth grooves 1001, thereby locking the rotating ability of the second rotating head 10 so that it cannot rotate. When the movable locking tooth head 11 is pulled out of the second rotating head 10, the outer convex teeth 1102 are separated from the locking tooth grooves 1001, thereby unlocking the rotating ability of the second rotating head 10.

[0035] The toggle assembly comprises a sliding toggle block 9, a connecting rod 15, an extension column 8 and the like; the sliding toggle block 9 is slidably arranged in the fixed seat 2, a sliding cavity is arranged in the sliding toggle block 9, the sliding toggle block 9 is arranged in the sliding cavity and can slide left and right, a guide rod 16 is further arranged in the fixed seat 2, and the sliding toggle block 9 is in sliding cooperation with the guide rod 16. A toggle fork 901 is arranged on the front side of the sliding toggle block 9, the toggle fork 901 extends into the limiting ring groove 1101 of the movable lock tooth head 11, when the toggle fork 901 moves left and right, the movable lock tooth head 11 can be driven to move left and right through the groove wall of the limiting ring groove 1101, thereby satisfying the effect of controlling the movable lock tooth head 11 to slide along the axial direction thereof. The front end of the extension column 8 is connected with the sliding toggle block 9 through the connecting rod 15, the front and rear ends of the connecting rod 15 are rotationally connected with the sliding toggle block 9 and the extension column 8 respectively; when the extension column 8 slides forward in the fixed seat 2, the sliding toggle block 9 can be pushed to slide right by the connecting rod 15, and when the extension column 8 slides backward in the fixed seat 2, the sliding toggle block 9 can be pulled to slide left by the connecting rod 15, thereby achieving the effect of controlling the sliding toggle block 9 to slide left and right by the extension column 8, and enabling the sliding toggle block 9 to drive the movable lock tooth head 11 to be inserted into or pulled out of the second rotating head 10 when the sliding toggle block 9 slides left and right, so as to realize the locking or unlocking of the rotating function of the second rotating head 10.

[0036] The rotating seat 1 is arranged on the front side of the fixed seat 2, and the rear end of the rotating seat 1 is fixedly connected with the second rotating head 10. When the locking joint is in the unlocked state, the rotating seat 1 can drive the second rotating head 10 to synchronously rotate when the rotating seat 1 rotates.

[0037] The fixing lock tooth head 12 is further arranged in the mounting hole, the fixing convex tooth 1201 on the outer wall of the right end of the fixing lock tooth head 12 is engaged with the inner tooth groove in the mounting hole, thereby realizing the fixing of the fixing lock tooth head 12 and the fixed seat 2 and preventing the fixed seat 2 from rotating relative to the fixing lock tooth head 12. The left end of the fixing lock tooth head 12 is rotationally connected with the first rotating head 7; the first rotating head 7 is coaxial with the second rotating head 10 and is fixedly connected with the rotating seat 1, the second rotating head 10 is in the form of a ring, the right end of the second rotating head 10 is inserted into the mounting hole, and the left end thereof extends out of the mounting hole.

[0038] A plurality of grooves are arranged on the outer wall of the left end of the fixing lock tooth, a positioning hole is arranged on the inner hole wall of the central hole of the first rotating head 7, a limiting pin 13 and a spring are arranged in the positioning hole, the spring abuts against the limiting pin 13 into the groove, when the second rotating head 10 rotates relative to the fixing lock tooth head 12, the spring can be compressed by the limiting pin 13, the limiting pin 13 can be positioned in cooperation with the groove, and the vibration generated at the same time facilitates the medical staff to determine the current rotating position of the second rotating head 10.

[0039] The mounting hole is sequentially divided into a first hole section 204, a second hole section 205, a third hole section 206 and a fourth hole section 207 along the axial direction thereof; the first rotating head 7 is arranged in the first hole section 204, the fixed lock tooth is arranged in the second hole section 205, the movable lock tooth is arranged in the third hole section 206, and the second rotating head 10 is arranged in the fourth hole section 207; and the inner wall of the second hole section 205 and the third hole section 206 is provided with an inner tooth groove.

[0040] The first rotating head 7 and the second rotating head 10 are provided with a separation ring 14, which is fixed between the second hole section 205 and the third hole section 206. The separation ring 14 can separate the first rotating head 7 from the second rotating head 10, thereby avoiding affecting the first rotating head 7 when the second rotating head 10 moves left and right.

[0041] The rear end of the rotating seat 1 is provided with a U-shaped seat 101, and the opposite inner sides of the two ends of the U-shaped seat 101 are provided with alignment protrusions 102, which are engaged with the first rotating head 7 and the second rotating head 10 respectively, thereby improving the connection stability of the rotating seat 1, the first rotating head 7 and the second rotating head 10.

[0042] The rear end of the fixed seat 2 is provided with an extension sleeve 5, and the rear end of the extension column 8 extends out of the fixed seat 2 and is fixedly connected with the extension sleeve 5; the extension sleeve 5 can move forward and backward relative to the fixed seat 2, thereby driving the extension column 8 to move forward and backward, so as to lock or unlock the locking joint.

[0043] The side wall of the fixed seat 2 is provided with a lock buckle embedding groove 208, and the elastic lock buckle 3 is arranged in the lock buckle embedding groove 208; the elastic lock buckle 3 is provided with a reverse tooth, and the inner wall of the extension sleeve 5 is provided with an annular groove; the reverse tooth of the elastic lock buckle 3 can be inserted into the annular groove to limit the forward and backward movement of the extension sleeve 5; when the elastic lock buckle 3 is pressed and the reverse tooth is separated from the annular groove of the extension sleeve 5, the extension sleeve 5 can move in the forward and backward direction. The rear end of the fixed seat 2 is provided with a positioning ring 6, and the positioning ring 6 is provided with a through hole; one end of the elastic lock buckle 3 extends out of the through hole and is positioned outside the positioning ring 6 and connected with the pressing cap 4.

[0044] The fixed seat 2 includes a first fixed petal 201 and a second fixed petal 202, which can be spliced and folded towards opposite directions; the front end of the first fixed petal 201 and the second fixed petal 202 are both provided with a semicircular handle 203, and the two semicircular handles 203 are folded to form the mounting hole therebetween.

[0045] Embodiment 2

[0046] As Figures 1 to 6As shown, the embodiment designs a laryngoscope tool, which comprises a laryngoscope operating end 18, a handheld rod 20, and the locking joint and other components described in embodiment 1; the laryngoscope operating end 18 is fixedly connected with the rotating seat 1 through a bolt 19, and the handheld rod 20 is fixedly connected with the telescopic sleeve 5 through a bolt 19.

[0047] When the laryngoscope tool in the embodiment is used, the telescopic sleeve 5 and the telescopic column 8 are pulled and moved backward by pressing the pressing cap 4 and moving the handheld rod 20 backward, so that the movable locking head moves to the left and unlocks the second rotating head 10, at this time, the relative angle between the laryngoscope operating end 18 and the handheld rod 20 can be adjusted; after the adjustment is completed, the telescopic sleeve 5 and the telescopic column 8 are pushed and moved forward by moving the handheld rod 20 forward, so that the movable locking head moves to the right and locks the second rotating head 10, at this time, the relative angle between the laryngoscope operating end 18 and the handheld rod 20 is locked.

[0048] The above embodiments are only examples for clearly illustrating the embodiments, and are not intended to limit the embodiments; all the embodiments do not need to be enumerated here and cannot be enumerated here. The obvious changes or changes derived therefrom are still within the protection scope of the technology.

Claims

1. A laryngoscope tool, characterized in that: Includes the laryngoscope operating end (18), the hand lever (20), and the locking joint; The locking joint includes a fixed seat (2), a rotating seat (1), a second rotating head (10), and a toggle assembly; The front end of the fixed base (2) is provided with a mounting hole, the center line of which is set along the left and right direction; a number of internal tooth grooves are arranged around the inner wall of the mounting hole; a movable locking tooth head (11) is provided in the mounting hole, the external protruding teeth (1102) on the outer wall of the movable locking tooth head (11) mesh with the internal tooth grooves, and the movable locking tooth head (11) can move left and right in the mounting hole; The second rotating head (10) is rotatably engaged with the fixed base (2) and is coaxial with the mounting hole; the outer wall of the movable locking tooth head (11) is provided with an external protruding tooth (1102) and a limiting ring groove (1101); a plurality of locking tooth grooves (1001) are provided on the inner wall of the second rotating head (10); when the movable locking tooth head (11) is inserted into the second rotating head (10), the external protruding tooth (1102) engages with the locking tooth groove (1001); when the movable locking tooth head (11) is pulled out of the second rotating head (10), the external protruding tooth (1102) separates from the locking tooth groove (1001); The actuating assembly includes a sliding block (9), a connecting rod (15), and a telescopic column (8). The sliding block (9) is slidably disposed in the fixed base (2). A fork (901) is provided on the front side of the sliding block (9). The fork (901) extends into the limiting ring groove (1101) to control the axial sliding of the movable locking tooth head (11). The front end of the telescopic column (8) is connected to the sliding block (9) through the connecting rod (15). When the telescopic column (8) slides back and forth in the fixed base (2), it can control the sliding position of the sliding block (9) so as to drive the movable locking tooth head (11) to insert or pull out the second rotating head (10). The rotating seat (1) is located on the front side of the fixed seat (2), and the rear end of the rotating seat (1) is fixedly connected to the second rotating head (10); The laryngoscope operating end (18) is fixedly connected to the rotating seat (1) by bolts (19), and the hand handle (20) is fixedly connected to the telescopic sleeve (5) at the rear end of the fixed seat (2) by bolts (19). The aforementioned front end is the end closest to the laryngoscope operating end (18), and the rear end is the end closest to the hand handle (20).

2. The laryngoscope tool according to claim 1, characterized in that: A fixing locking tooth (12) is also provided in the mounting hole. The right end of the fixing locking tooth (12) engages with the inner tooth groove in the mounting hole through the fixing protrusion (1201) on its outer wall. The left end of the fixing locking tooth (12) is rotatably connected to the first rotating head (7). The first rotating head (7) and the second rotating head (10) are coaxial and are both fixedly connected to the rotating seat (1).

3. The laryngoscope tool according to claim 2, characterized in that: Several grooves are provided on the outer wall of the left end of the fixed locking tooth, and a positioning hole is provided on the inner wall of the central hole of the first rotating head (7). A limit pin (13) and a spring are provided in the positioning hole, and the spring presses the limit pin (13) against the groove.

4. The laryngoscope tool according to claim 2, characterized in that: The mounting holes are divided into a first hole section (204), a second hole section (205), a third hole section (206), and a fourth hole section (207) along their axial direction. The first rotating head (7) is located in the first hole section (204), the fixed locking tooth is located in the second hole section (205), the movable locking tooth is located in the third hole section (206), and the second rotating head (10) is located in the fourth hole section (207). The inner walls of the second hole section (205) and the third hole section (206) are provided with internal tooth grooves.

5. The laryngoscope tool according to claim 4, characterized in that: An isolation ring (14) is provided between the first rotating head (7) and the second rotating head (10), and the isolation ring (14) is fixed between the second hole section (205) and the third hole section (206); a guide rod (16) is also provided in the fixed seat (2), and the sliding block (9) slides with the guide rod (16).

6. The laryngoscope tool according to claim 2, characterized in that: The rear end of the rotating seat (1) is provided with a U-shaped seat (101), and the inner sides of both ends of the U-shaped seat (101) are provided with alignment protrusions (102). The two alignment protrusions (102) respectively engage with the first rotating head (7) and the second rotating head (10).

7. The laryngoscope tool according to any one of claims 1-6, characterized in that: The rear end of the fixed seat (2) is covered with a telescopic sleeve (5), and the rear end of the telescopic column (8) extends out of the fixed seat (2) and is fixedly connected to the telescopic sleeve (5); the telescopic sleeve (5) can move back and forth relative to the fixed seat (2).

8. The laryngoscope tool according to claim 7, characterized in that: A latching groove (208) is provided on the side wall of the fixed base (2), and an elastic latch (3) is provided in the latching groove (208). The elastic latch (3) is provided with a back tooth, and an annular groove is provided on the inner wall of the telescopic sleeve (5). The back tooth on the elastic latch (3) can be inserted into the annular groove to restrict the forward and backward movement of the telescopic sleeve (5). A positioning ring (6) is provided on the rear end of the fixed base (2). A through hole is provided on the positioning ring (6), and one end of the elastic latch (3) extends out from the through hole and is connected to the pressing cap (4).

9. The laryngoscope tool according to claim 7, characterized in that: The fixing base (2) includes a first fixing lobe (201) and a second fixing lobe (202). The first fixing lobe (201) and the second fixing lobe (202) can be spliced ​​and closed in opposite directions. The front ends of the first fixing lobe (201) and the second fixing lobe (202) each have a semi-circular handle (203). After the two semi-circular handles (203) are closed, the mounting hole is formed between them.

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