Laryngoscope tool and locking joint

Abstract

The invention belongs to the technical field of laryngoscope operation tools, and particularly relates to a laryngoscope tool and a locking joint, which comprise a fixed seat, a rotating seat, a second rotating head and a shifting assembly, a plurality of inner tooth grooves are annularly distributed in the inner wall of a mounting hole in the front end of the fixing base. A movable lock tooth head arranged in the mounting hole is meshed and matched with the inner tooth groove; when the movable lock tooth head is inserted into or pulled out of the second rotating head, the outer convex teeth are meshed with or separated from the lock tooth grooves; the shifting assembly is arranged to control the sliding of the movable lock tooth head; when the telescopic column slides back and forth, the movable lock tooth head is driven to be inserted into or pulled out of the second rotating head; and the rotating seat is fixedly connected with the second rotating head. According to the scheme, the locking parts of the locking joint are all arranged in the locking joint, so that the size is smaller, and the locking joint is suitable for being applied to laryngoscope tools; and in addition, through the mode that outer convex teeth are engaged with and disengaged from lock tooth grooves when the second rotating head rotates forwards and backwards, the state after locking can be more stable, and the state after unlocking can be more free.

Description

Technical Field

[0001] The invention belongs to the technical field of laryngoscope surgical tools, and in particular relates to a laryngoscope tool and a locking joint. Background Art

[0002] When performing laryngoscopic surgery, it is often necessary to change the angle of the laryngoscopic surgical tool and maintain it. In the prior art, since the angle of the bending part of the laryngoscopic surgical tool is fixed, the laryngoscopic surgical tool often cannot be changed in angle, and medical staff need to adjust their hands to achieve the change of the position of the laryngoscopic surgical tool. This method is often prone to blind spots and inconvenience, and cannot meet the needs of the actual surgical process. If a bendable joint is used to change the angle of the laryngoscopic surgical tool, how to lock the position of the joint is a problem that must be solved.

[0003] Existing locking mechanisms, such as door locks and universal wheel locking structures, often need to be installed in a specified position before they can be locked; and if a braking mechanism is used to replace the locking mechanism, and braking is achieved by electromagnetic, friction or mechanical interference, it is difficult to maintain the braking state after braking. At the same time, the existing locking mechanism is also large in size and is not suitable for laryngoscope surgical tools. Summary of the invention

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

[0005] The technical solution adopted by the present invention is:

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

[0007] The front end of the fixing seat is provided with a mounting hole, the center line of which is arranged in the left-right direction; a plurality of inner tooth grooves are arranged on the inner wall of the mounting hole; a movable locking tooth head is arranged in the mounting hole, the outer protruding teeth on the outer wall of the movable locking tooth head are engaged with the inner tooth grooves, and the movable locking tooth head can move left and right in the mounting hole;

[0008] The second rotating head is rotatably matched with the fixed seat and is coaxial with the mounting hole; an outer convex tooth and a limiting ring groove are arranged on the outer wall of the movable locking tooth head; a plurality of locking tooth grooves are arranged on the inner wall of the second rotating head, and when the movable locking tooth head is inserted into the second rotating head, the outer convex tooth is engaged with the locking tooth groove, and when the movable locking tooth head is pulled out of the second rotating head, the outer convex tooth is separated from the locking tooth groove;

[0009] The toggle assembly comprises a sliding block, a connecting rod and a telescopic column; the sliding block is slidably arranged in a fixed seat, a shift fork is arranged on the front side of the sliding block, and the shift fork extends into the limit ring groove to control the axial sliding of the movable lock tooth head; the front end of the telescopic column is connected to the sliding block through the connecting rod; when the telescopic column slides back and forth in the fixed seat, it can control the sliding position of the sliding block, so as to drive the movable lock tooth head to insert or pull out 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 to the second rotating head.

[0011] As an alternative or supplement to the above-mentioned locking joint: a fixed locking tooth head is also arranged in the mounting hole, and the right end of the fixed locking tooth head engages with the internal tooth groove in the mounting hole through the fixed protruding teeth on its outer wall, and the left end of the fixed locking tooth head is rotatably connected to the first rotating head; the first rotating head is coaxial with the second rotating head and both are fixedly connected to 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 locking tooth, a positioning hole is arranged on the inner hole wall of the center hole of the first rotating head, a limiting pin and a spring are arranged in the positioning hole, and the spring presses the limiting pin tightly into the groove.

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

[0014] As an alternative or supplement to the above locking joint: an isolation ring is arranged between the first rotating head and the second rotating head, and the isolation ring is fixed between the second hole segment and the third hole segment; a guide rod is also arranged in the fixing seat, and the sliding block is slidably matched with the guide rod.

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

[0016] As an alternative or supplement to the above locking joint: a telescopic sleeve is provided on the rear end outer sleeve of the fixing seat, the rear end of the telescopic column extends out of the fixing seat and is fixedly connected to the telescopic sleeve; the telescopic sleeve can move forward and backward relative to the fixing seat.

[0017] As an alternative or supplement to the above-mentioned locking joint: a lock buckle embedding groove is provided on the side wall of the fixing seat, an elastic lock buckle is provided in the lock buckle embedding groove, the elastic lock buckle is provided with inverted teeth, an annular groove is provided on the inner wall of the telescopic sleeve, and the inverted teeth on the elastic lock buckle can be inserted into the annular groove to limit the forward and backward movement of the telescopic sleeve; a positioning ring is provided on the rear end outer sleeve of the fixing seat, and a through hole is provided on the positioning ring, and one end of the elastic lock buckle extends out of the through hole and is connected to the pressing cap.

[0018] As an alternative or supplement to the above-mentioned locking joint: the fixing seat includes a first fixing petal and a second fixing petal, and the first fixing petal and the second fixing petal can be spliced ​​and closed in opposite directions; the front ends of the first fixing petal and the second fixing petal both have a semicircular handle, and when the two semicircular handles are closed, the mounting hole is formed between the two.

[0019] A laryngoscope tool comprises a laryngoscope operating end, a hand-held rod and the above-mentioned locking joint; the laryngoscope operating end is fixedly connected to a rotating seat by bolts, and the hand-held rod is fixedly connected to a telescopic sleeve by bolts.

[0020] The beneficial effects of the present invention are:

[0021] 1. The locking parts of the locking joint of the present invention are all built into the locking joint, which makes the volume smaller and suitable for application on laryngoscope tools; in addition, the outer convex teeth and the locking tooth grooves are engaged and disengaged when the second rotating head is turned forward and backward, so that the locked state can be more stable and the unlocked state can be more free;

[0022] 2. In this solution, the toggle assembly can control the left and right movement of the second rotating head by moving forward and backward, and can lock and unlock the locking joint by displacing the telescopic column in the forward and backward directions, thereby reducing the width of the locking joint and avoiding the influence of the circumscribed circle diameter of the laryngoscope tool on the laryngoscopic surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below.

[0024] Figure 1 It is a schematic diagram of the structure of the laryngoscope tool in this scheme;

[0025] Figure 2 It is a structural schematic diagram of the locking joint in this scheme;

[0026] Figure 3 It is the exploded structure diagram of the locking joint in this scheme;

[0027] Figure 4 It is a diagram of the coordination structure of the toggle assembly and the movable lock tooth head and other parts;

[0028] Figure 5 It is a cross-sectional exploded view of the locking joint in this scheme;

[0029] Figure 6 yes Figure 5 The local structure diagram of .

[0030] In the figure: 1-rotating seat; 101-U-shaped seat; 102-aligning protrusion; 2-fixed seat; 201-first fixed petal; 202-second fixed petal; 203-semicircular handle; 204-first hole section; 205-second hole section; 206-third hole section; 207-fourth hole section; 208-lock buckle embedding groove; 3-elastic lock buckle; 4-pressing cap; 5-telescopic sleeve; 6-positioning ring; 7-first rotating head; 8-telescopic column; 9-sliding block; 901-shift fork; 10-second rotating head; 1001-locking tooth groove; 11-movable locking tooth head; 1101-limiting ring groove; 1102-external convex tooth; 12-fixed locking tooth head; 1201-fixed convex tooth; 13-limiting nail; 14-isolating ring; 15-connecting rod; 16-guide rod; 17-telescopic spring; 18-laryngoscope operating end; 19-bolt; 20-hand handle. DETAILED DESCRIPTION

[0031] The technical solution in this embodiment will be clearly and completely described below in conjunction with the accompanying drawings. The described embodiments are only some of the embodiments, not all of them. Based on the embodiments in this solution, all other embodiments obtained by ordinary technicians in this field without making creative work are within the protection scope of this solution.

[0032] Example 1

[0033] like Figures 1 to 5 As shown, this embodiment designs a locking joint, including components such as a fixed seat 2, a rotating seat 1, a second rotating head 10 and a toggle assembly.

[0034] The fixed seat 2 is a structure in which the length in the front-to-back direction is greater than the width in the left-to-right direction. A mounting hole is provided at the front end of the fixed seat 2. The mounting hole is a through hole and is used for the installation of the second rotating head 10, the second rotating head 10 and other components. The center line of the mounting hole is arranged along the left-to-right direction, and the center line of the mounting hole can be perpendicular to the length direction of the fixed seat 2. A plurality of inner tooth grooves are arranged on the inner wall of the mounting hole, and 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 mounting hole. The movable locking tooth head 11 is arranged in the mounting hole, and 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 matched with the clearance of the inner tooth grooves, so that the movable locking tooth head 11 can move in the mounting hole in the left-to-right direction.

[0035] The second rotating head 10 is rotatably matched with the fixed seat 2. The second rotating head 10 is in the shape of a circular circular arc pancake. One end of the second rotating head 10 extends into the mounting hole and the other end extends out of the mounting hole. The second rotating head 10 is coaxial with the mounting hole and can rotate in positive and negative directions relative to the fixed seat 2. An outer convex tooth 1102 is provided on the outer wall of the right end of the movable locking tooth head 11, and a limiting ring groove 1101 is provided on the outer wall of the left end; a plurality of locking tooth grooves 1001 are provided 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 tooth 1102 is engaged with the locking tooth groove 1001, thereby locking the rotation 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 tooth 1102 is separated from the locking tooth groove 1001, thereby unlocking the rotation ability of the second rotating head 10.

[0036] The shift assembly includes components such as a sliding shift block 9, a connecting rod 15 and a telescopic column 8; the sliding shift block 9 is slidably arranged in the fixed seat 2, a sliding cavity is arranged in the sliding shift block 9, the sliding shift block 9 is arranged in the sliding cavity and can slide left and right, and a guide rod 16 is also arranged in the fixed seat 2, and the sliding shift block 9 and the guide rod 16 are slidably matched. A shift fork 901 is arranged on the front side of the sliding shift block 9, and the shift fork 901 extends into the limiting ring groove 1101 of the active lock tooth head 11. When the shift fork 901 moves left and right, the active 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 active lock tooth head 11 to slide along its axial direction. The front end of the telescopic column 8 is connected to the sliding block 9 through a connecting rod 15, and the front and rear ends of the connecting rod 15 are rotatably connected to the sliding block 9 and the telescopic column 8 respectively; when the telescopic column 8 slides forward in the fixed seat 2, the sliding block 9 can be pushed to slide to the right through the connecting rod 15, and when the telescopic column 8 slides backward in the fixed seat 2, the sliding block 9 can be pulled to slide to the left through the connecting rod 15, thereby achieving the effect of controlling the left and right sliding position of the sliding block 9 by using the telescopic column 8, so that when the sliding block 9 slides left and right, the movable lock tooth head 11 can be driven by its fork 901 to insert or pull out the second rotating head 10, thereby realizing the locking or unlocking of the rotation function of the second rotating head 10.

[0037] The rotating seat 1 is arranged at 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. When the locking joint is in the unlocked state, when the rotating seat 1 rotates, it can drive the second rotating head 10 to rotate synchronously.

[0038] A fixed lock tooth head 12 is also provided in the mounting hole, and the right end of the fixed lock tooth head 12 is engaged with the inner tooth groove in the mounting hole through the fixed protruding teeth 1201 on the outer wall thereof, so as to fix the fixed lock tooth head 12 and the fixed seat 2, and prevent the fixed seat 2 and the fixed lock tooth head 12 from rotating relative to each other. The left end of the fixed lock tooth head 12 is rotatably connected with the first rotating head 7; the first rotating head 7 is coaxial with the second rotating head 10 and both are fixedly connected with the rotating seat 1, and the second rotating head 10 is in a circular shape, and the right end of the second rotating head 10 is inserted into the mounting hole, and the left end extends out of the mounting hole.

[0039] A plurality of grooves are arranged on the outer wall at the left end of the fixed locking tooth, and a positioning hole is arranged on the inner 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 presses the limiting pin 13 into the groove. When the second rotating head 10 and the fixed locking tooth head 12 rotate relative to each other, the spring can be compressed by the limiting pin 13, and the limiting pin 13 can cooperate with the groove for positioning. At the same time, the vibration generated facilitates medical staff to judge the current rotation position of the second rotating head 10.

[0040] The mounting hole is divided into a first hole section 204, a second hole section 205, a third hole section 206 and a fourth hole section 207 along its axial direction; the first rotating head 7 is arranged in the first hole section 204, the fixed locking tooth is arranged in the second hole section 205, the movable locking tooth is arranged in the third hole section 206, the second rotating head 10 is arranged in the fourth hole section 207, and internal tooth grooves are arranged on the inner walls of the second hole section 205 and the third hole section 206.

[0041] 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. The isolation ring 14 can separate the first rotating head 7 from the second rotating head 10, thereby preventing the second rotating head 10 from affecting the first rotating head 7 when moving left and right.

[0042] A U-shaped seat 101 is provided at the rear end of the rotating seat 1, and alignment protrusions 102 are provided on the opposite inner sides of the two ends of the U-shaped seat 101. The two alignment protrusions 102 respectively engage with the first rotating head 7 and the second rotating head 10, thereby improving the connection stability of the rotating seat 1 and the first rotating head 7 and the second rotating head 10.

[0043] A telescopic sleeve 5 is provided on the rear end outer sleeve of the fixed seat 2, 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 forward and backward relative to the fixed seat 2, thereby driving the telescopic column 8 to move forward and backward, so as to lock or unlock the locking joint.

[0044] A lock buckle embedding groove 208 is provided on the side wall of the fixing seat 2, and an elastic lock buckle 3 is provided in the lock buckle embedding groove 208. The elastic lock buckle 3 is provided with a reverse tooth, and an annular groove is provided on the inner wall of the telescopic sleeve 5. The reverse tooth on the elastic lock buckle 3 can be inserted into the annular groove to limit the forward and backward movement of the telescopic sleeve 5. When the elastic lock buckle 3 is pressed and the reverse tooth is separated from the annular groove of the telescopic sleeve 5, the telescopic sleeve 5 can move in the forward and backward direction. A positioning ring 6 is provided on the rear end outer sleeve of the fixing seat 2, and a through hole is provided on the positioning ring 6. One end of the elastic lock buckle 3 extends from the through hole to the outside of the positioning ring 6 and is connected to the pressing cap 4.

[0045] The fixing seat 2 includes a first fixing flap 201 and a second fixing flap 202, which can be spliced ​​and closed in opposite directions; the front ends of the first fixing flap 201 and the second fixing flap 202 both have a semicircular handle 203, and when the two semicircular handles 203 are closed, the mounting hole is formed between the two.

[0046] Example 2

[0047] like Figures 1 to 6 As shown, this embodiment designs a laryngoscope tool, including a laryngoscope operating end 18, a hand-held rod 20 and components such as the locking joint described in Example 1; the laryngoscope operating end 18 is fixedly connected to the rotating seat 1 by a bolt 19, and the hand-held rod 20 is fixedly connected to the telescopic sleeve 5 by a bolt 19.

[0048] When the laryngoscope tool in this embodiment is in use, by pressing the push cap 4 and moving the hand-held rod 20 backward, the telescopic sleeve 5 and the telescopic column 8 can be pulled backward, so that the movable locking head moves to the left and unlocks the second rotating head 10, and the relative angle between the laryngoscope operating end 18 and the hand-held rod 20 can be adjusted at this time; after the adjustment is completed, the hand-held rod 20 is moved forward, and the telescopic sleeve 5 and the telescopic column 8 are pushed forward, so that the movable locking head moves to the right and locks the second rotating head 10, and the relative angle between the laryngoscope operating end 18 and the hand-held rod 20 is adjusted and locked.

[0049] The above embodiments are merely examples for the purpose of clarifying the description, and are not intended to limit the implementation methods; it is not necessary and impossible to list all implementation methods exhaustively. However, obvious changes or modifications derived therefrom are still within the scope of protection of the present technology.

Claims

1. A locking joint, characterized in that: It comprises a fixed seat (2), a rotating seat (1), a second rotating head (10) and a toggle assembly; The front end of the fixing seat (2) is provided with a mounting hole, the center line of which is arranged in the left-right direction; a plurality of inner tooth grooves are arranged on the inner wall of the mounting hole; a movable locking tooth head (11) is arranged in the mounting hole, the outer protruding teeth (1102) on the outer wall of the movable locking tooth head (11) are engaged with the inner tooth grooves, and the movable locking tooth head (11) can move left-right in the mounting hole; The second rotating head (10) is rotatably matched with the fixed seat (2) and is coaxial with the mounting hole; an outer wall of the movable locking tooth head (11) is provided with an outer convex 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 outer convex tooth (1102) is engaged with the locking tooth groove (1001); when the movable locking tooth head (11) is pulled out of the second rotating head (10), the outer convex tooth (1102) is separated from the locking tooth groove (1001); The shifting assembly comprises a sliding shifting block (9), a connecting rod (15) and a telescopic column (8); the sliding shifting block (9) is slidably arranged in the fixed seat (2); a shift fork (901) is arranged on the front side of the sliding shifting block (9); the shift 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 shifting block (9) through the connecting rod (15); when the telescopic column (8) slides back and forth in the fixed seat (2), it can control the sliding position of the sliding shifting 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 arranged 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).

2. The locking joint according to claim 1, characterized in that: A fixed lock tooth head (12) is also provided in the mounting hole, and the right end of the fixed lock tooth head (12) engages with the internal tooth groove in the mounting hole through the fixed protruding teeth (1201) on the outer wall thereof, and the left end of the fixed lock tooth head (12) is rotatably connected to the first rotating head (7); the first rotating head (7) and the second rotating head (10) are coaxial and both are fixedly connected to the rotating seat (1).

3. The locking joint according to claim 2, characterized in that: 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 center hole of the first rotating head (7), a limiting pin (13) and a spring are arranged in the positioning hole, and the spring presses the limiting pin (13) into the groove.

4. The locking joint according to claim 2, characterized in that: The mounting hole is divided into a first hole section (204), a second hole section (205), a third hole section (206) and a fourth hole section (207) in sequence along its axial direction; the first rotating head (7) is arranged in the first hole section (204), the fixed locking teeth are arranged in the second hole section (205), the movable locking teeth are arranged in the third hole section (206), the second rotating head (10) is arranged in the fourth hole section (207), and inner tooth grooves are arranged on the inner walls of the second hole section (205) and the third hole section (206).

5. The locking joint according to claim 4, characterized in that: An isolating ring (14) is provided between the first rotating head (7) and the second rotating head (10), and the isolating 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 fixing seat (2), and the sliding block (9) is slidably matched with the guide rod (16).

6. The locking joint according to claim 2, characterized in that: A U-shaped seat (101) is provided at the rear end of the rotating seat (1), and alignment protrusions (102) are provided on the opposite inner sides of the two ends of the U-shaped seat (101), and the two alignment protrusions (102) are respectively engaged with the first rotating head (7) and the second rotating head (10).

7. The locking joint according to any one of claims 1 to 6, characterized in that: A telescopic sleeve (5) is provided on the rear end outer sleeve of the fixing seat (2); the rear end of the telescopic column (8) extends out of the fixing seat (2) and is fixedly connected to the telescopic sleeve (5); the telescopic sleeve (5) can move forward and backward relative to the fixing seat (2).

8. The locking joint according to claim 7, characterized in that: A lock buckle embedding groove (208) is provided on the side wall of the fixing seat (2), an elastic lock buckle (3) is provided in the lock buckle embedding groove (208), the elastic lock buckle (3) is provided with inverted teeth, an annular groove is provided on the inner wall of the telescopic sleeve (5), the inverted teeth on the elastic lock buckle (3) can be inserted into the annular groove to limit the forward and backward movement of the telescopic sleeve (5); a positioning ring (6) is provided on the rear end outer sleeve of the fixing seat (2), 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 connected to the pressing cap (4).

9. The locking joint according to claim 7, characterized in that: The fixing seat (2) comprises a first fixing flap (201) and a second fixing flap (202), wherein the first fixing flap (201) and the second fixing flap (202) can be spliced ​​and closed in opposite directions; the front ends of the first fixing flap (201) and the second fixing flap (202) are both provided with a semicircular handle (203), and when the two semicircular handles (203) are closed, the mounting hole is formed between the two.

10. A laryngoscope tool, characterized in that: It comprises a laryngoscope operating end (18), a hand-held rod (20) and the locking joint according to claim 8 or 9; the laryngoscope operating end (18) is fixedly connected to the rotating seat (1) by a bolt (19), and the hand-held rod (20) is fixedly connected to the telescopic sleeve (5) by a bolt (19).

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