Internal fixed domino connection device

Abstract

The present invention discloses an internal fixed domino connection device, specifically relates to the field of internal fixed domino, including a No. 1 connection ring and a No. 2 connection ring, wherein the No. 1 connection ring and the No. 2 connection ring are respectively sleeved with a fixed connecting rod and an extension rod, wherein the No. 1 connection ring and the No. 2 connection ring both include a fixed sheet and a movable sheet, wherein the fixed sheet is movably arranged on one side of the movable sheet, wherein a connecting groove is provided at one end of the fixed sheet, wherein a connecting shaft is fixedly provided inside the connecting groove, wherein a connecting block is fixedly provided at one end of the movable sheet, wherein a perforation is provided inside the connecting block, wherein clips are fixedly provided on the relative inner sides of the fixed sheet and the movable sheet, wherein the clips include an anti-skid sheet and an anti-skid pad, and the anti-skid sheet is adhesively connected to the anti-skid pad. The present invention effectively prevents the fixed connecting rod or the extension rod from moving in the axial direction, and is more stable when in use, wherein the overall side surface is smooth and free of protrusions, and will not cause scratches, and is safer to use.

Description

Technical Field

[0001] The present invention relates to the field of internal fixation dominoes, and more particularly to an internal fixation domino connection device. Background Art

[0002] For some unstable pelvic fractures, simple anterior ring fixation can often achieve the effect of stabilizing the pelvis. For completely unstable pelvic fractures, the reduction and fixation of the anterior ring is an auxiliary to the reduction and fixation of the posterior ring. The main fixation methods of the anterior ring include: pelvic external fixation, plate and screw fixation, simple screw fixation and internal fixation frame. For displaced posterior pelvic ring injuries, good reduction is the prerequisite for fixation. If satisfactory reduction can be achieved through closed reduction methods such as traction, minimally invasive fixation methods can usually be selected, such as sacroiliac joint screw fixation.

[0003] The existing internal fixed domino connection mechanism has shortcomings. The fixed connecting rod or the extension rod is easy to move along the axial direction. It is not stable enough when in use. The side surface is not smooth enough and is easy to cause scratches. It is not safe to use. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides an internal fixed domino connection device. The technical problem to be solved by the present invention is: how to prevent axial movement, reduce surface protrusions, and improve safety performance.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an internal fixed domino connection device, comprising a No. 1 connection ring and a No. 2 connection ring, wherein the No. 1 connection ring and the No. 2 connection ring are respectively sleeved with a fixed connecting rod and an extension rod, wherein the No. 1 connection ring and the No. 2 connection ring both comprise a fixed sheet and a movable sheet, wherein the fixed sheet is movably arranged on one side of the movable sheet, a connecting groove is provided at one end of the fixed sheet, a connecting shaft is fixedly provided inside the connecting groove, a connecting block is fixedly provided at one end of the movable sheet, a through hole is provided inside the connecting block, a clamping sheet is fixedly provided on the opposite inner sides of the fixed sheet and the movable sheet, the clamping sheet comprises an anti-slip sheet and an anti-slip pad, and the anti-slip sheet and the anti-slip pad are adhesively connected, a buffer cavity is provided inside the anti-slip sheet, a No. 1 connection seat is provided on the side of the No. 1 connection ring close to the No. 2 connection ring, a No. 1 extension shaft and a No. 2 extension shaft are fixedly provided on the side of the No. 1 connection seat away from the No. 1 connection ring, and the opposite ends of the No. 1 extension shaft and the No. 2 extension shaft are passed through bearings The second extension shaft is fixedly arranged on the side of the first extension shaft away from the first connecting seat, and a groove is provided on the surface of the first extension shaft, and several groups of grooves are arranged around the first extension shaft, and a fixing groove is provided on the surface of the second extension shaft, and a second connecting seat is provided on the side of the No. 2 connecting ring close to the No. 1 connecting seat, and a No. 1 mounting groove and a No. 2 mounting groove are provided on the side of the No. 2 connecting seat away from the No. 2 connecting ring, and the No. 2 mounting groove is located on the side of the No. 1 mounting groove away from the No. 2 connecting ring, and the No. 2 mounting groove is located on the side of the No. 1 mounting groove away from the No. 2 connecting ring, and the outer circumference of the No. 2 connecting seat is penetrated by two through holes axially symmetrically arranged about the horizontal central axis of the No. 2 connecting seat at the position corresponding to the No. 1 mounting groove, and a bolt is penetrated inside the through hole, and a locking screw hole compatible with the bolt is provided at the position of the fixing groove surface corresponding to the bolt, and a spring is fixedly provided on the inner wall of the No. 2 mounting groove, and a spring is fixedly provided at one end of the spring, and the spring is movably arranged in the groove, and a locking assembly is provided at one end of the fixed plate and the movable plate away from the connecting shaft.

[0006] When in use, the fixed link and the extension rod are respectively fixed through the No. 1 connecting ring and the No. 2 connecting ring, and the No. 1 connecting ring and the No. 2 connecting ring are both composed of a fixed plate and a movable plate, wherein the connecting block is movably arranged inside the connecting groove, and the connecting shaft is rotatably arranged inside the through hole, that is, one end of the fixed plate and the movable plate is rotatably connected, and the other end of the fixed plate and the movable plate can be extended to both sides, and the locking assembly is loosened to increase the space between the fixed plate and the movable plate, which is convenient for the insertion of the fixed link or the extension rod. After the fixed link or the extension rod is installed, the fixed plate and the movable plate are combined, and then the locking assembly is fastened. In this way, the fixed link or the extension rod can be clamped, and the clamping plate can increase the friction between the fixed plate and the fixed link or the extension rod. The anti-skid sheet is a hard plastic sheet, and an anti-skid protrusion is provided on the side of the anti-skid sheet close to the anti-skid pad. The outer surface of the anti-skid protrusion is arranged in an arc shape, and the anti-skid pad is close to the surface of the fixed link or the extension rod, effectively preventing the fixed link or the extension rod from moving along the axial direction.

[0007] In a preferred embodiment, a fixing hole is formed at the center of the fixing plate and its corresponding clamping plate, and the fixing hole is arranged in a T shape.

[0008] In a preferred embodiment, a No. 1 screw hole is opened at the center of one side of the No. 1 connecting seat close to the No. 1 connecting ring, and a No. 2 screw hole is opened at the center of one side of the No. 2 connecting seat close to the No. 2 connecting ring, and the No. 1 screw hole and the No. 2 screw hole are both arranged corresponding to the fixing hole.

[0009] In a preferred embodiment, the No. 1 connecting ring is vertically arranged on one side of the No. 2 connecting ring, and the fixed plate and the movable plate are both arranged in an arc shape.

[0010] In a preferred embodiment, the connecting block is movably disposed inside the connecting groove, and the connecting shaft is rotatably disposed inside the through hole.

[0011] In a preferred embodiment, a side of the anti-slip sheet close to the anti-slip pad is provided with an anti-slip protrusion, and the outer surface of the anti-slip protrusion is arranged in an arc shape.

[0012] In a preferred embodiment, the No. 1 screw hole and the No. 2 screw hole are detachably connected to the corresponding fixing holes via screws.

[0013] In a preferred embodiment, the locking assembly includes two ear plates, which are respectively fixed on the outer circumferential surfaces of the fixed plate and the movable plate at one end away from the connecting shaft, a screw is fixed on one side of the ear plate on the movable plate, and an open screw groove is provided on the outer edge of the middle part of the ear plate on the fixed plate, a nut is threadedly sleeved on the external end of the screw away from the movable plate, and a gasket is movably sleeved between the nut and the ear plate on the movable plate.

[0014] Technical effects and advantages of the present invention:

[0015] 1. The present invention can increase the friction between the fixed sheet and the fixed connecting rod or the extension rod by setting the clip sheet. The anti-skid sheet is a hard plastic sheet, and the anti-skid sheet is provided with an anti-skid protrusion on one side close to the anti-skid pad. The outer surface of the anti-skid protrusion is arranged in an arc shape. The anti-skid pad is closely attached to the surface of the fixed connecting rod or the extension rod, effectively preventing the fixed connecting rod or the extension rod from moving along the axial direction. It is more stable when in use. The overall side surface is smooth without protrusions, will not cause scratches, and is safer to use.

[0016] 2. The No. 1 extension shaft of the present invention can rotate inside the No. 1 installation groove, which is convenient for adjusting the use angle of the No. 1 connecting ring and the No. 2 connecting ring. When the No. 1 extension shaft rotates a certain angle, the spring can push the spring sheet into the groove, which can produce a sense of jamming and facilitate identification of the rotation angle. One end of the bolt can fix the No. 2 extension shaft through the fixing groove, which is convenient for adjusting the use angle of the No. 1 connecting ring and the No. 2 connecting ring. The fixing sheet and the corresponding No. 1 connecting seat or No. 2 connecting seat can be detachably fixed, which is convenient for subsequent disassembly, maintenance or replacement, and is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the structure of the No. 1 connecting ring of the present invention.

[0019] Figure 3 It is a schematic diagram of the fixing plate structure of the present invention.

[0020] Figure 4 It is a schematic diagram of the structure of the movable sheet of the present invention.

[0021] Figure 5 It is a schematic diagram of the cross-sectional structure of the clip of the present invention.

[0022] Figure 6 It is a schematic diagram of the cross-sectional structure of the No. 1 connecting socket of the present invention.

[0023] Figure 7 The cross-sectional structure diagram of the second connection seat of the present invention.

[0024] Figure 8 For the present invention Figure 7 A schematic diagram of the enlarged structure.

[0025] The accompanying drawings are marked as follows: 1 No. 1 connecting ring, 11 fixing plate, 111 connecting groove, 112 connecting shaft, 113 fixing hole, 12 movable plate, 121 connecting block, 122 through hole, 13 clamping plate, 131 anti-slip plate, 132 anti-slip pad, 133 buffer cavity, 2 No. 2 connecting ring, 3 No. 1 connecting seat, 31 No. 1 extension shaft, 32 No. 1 screw hole, 33 No. 2 extension shaft, 34 groove, 35 fixing groove, 4 No. 2 connecting seat, 41 No. 1 mounting groove, 42 No. 2 screw hole, 43 No. 2 mounting groove, 44 bolt, 45 spring, 46 spring, 5 locking assembly, 51 ear plate, 52 screw rod, 53 nut, 54 gasket, 6 extension rod, 7 fixed connecting rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The present invention provides an internal fixed domino connection device, comprising a No. 1 connection ring 1 and a No. 2 connection ring 2, wherein the No. 1 connection ring 1 and the No. 2 connection ring 2 are respectively sleeved with a fixed connecting rod 7 and an extension rod 6, wherein the No. 1 connection ring 1 and the No. 2 connection ring 2 both comprise a fixed sheet 11 and a movable sheet 12, wherein the fixed sheet 11 is movably arranged on one side of the movable sheet 12, wherein a connecting groove 111 is provided at one end of the fixed sheet 11, wherein a connecting shaft 112 is fixedly arranged inside the connecting groove 111, wherein a connecting block 121 is fixedly arranged at one end of the movable sheet 12, wherein a through hole 122 is provided inside the connecting block 121, The inner sides of the fixed sheet 11 and the movable sheet 12 are fixed with a clip 13, and the clip 13 includes an anti-skid sheet 131 and an anti-skid pad 132, and the anti-skid sheet 131 and the anti-skid pad 132 are glued and connected, and a buffer cavity 133 is opened inside the anti-skid sheet 131. The side of the No. 1 connecting ring 1 close to the No. 2 connecting ring 2 is provided with a No. 1 connecting seat 3, and the side of the No. 1 connecting seat 3 away from the No. 1 connecting ring 1 is fixed with a No. 1 extension shaft 31 and a No. 2 extension shaft 33. The opposite ends of the No. 1 extension shaft 31 and the No. 2 extension shaft 33 are rotatably connected through a bearing, so that the No. 1 connecting ring 1 Relative rotation can occur between the No. 1 connecting ring 2, and the No. 2 extension shaft 33 is fixedly arranged on the side of the No. 1 extension shaft 31 away from the No. 1 connecting seat 3, the surface of the No. 1 extension shaft 31 is provided with a groove 34, and the groove 34 is arranged in several groups around the No. 1 extension shaft 31, and the surface of the No. 2 extension shaft 33 is provided with a fixing groove 35, and the side of the No. 2 connecting ring 2 close to the No. 1 connecting seat 3 is provided with a No. 2 connecting seat 4, and the side of the No. 2 connecting seat 4 away from the No. 2 connecting ring 2 is provided with a No. 1 mounting groove 41 and a No. 2 mounting groove 43, and the No. 2 mounting groove 43 is located at the No. 1 mounting groove 41 away from the No. 2 connecting ring 2, two through holes are axially symmetrically arranged about the horizontal central axis of the No. 2 connecting seat 4 at the position corresponding to the No. 1 mounting groove 41 on the outer circumference surface of the No. 2 connecting seat 4, and bolts 44 are penetrated inside the through holes, and locking screw holes matched with the bolts 44 are opened at the position corresponding to the bolts 44 on the surface of the fixing groove 35, and a spring 45 is fixedly arranged on the inner wall of the No. 2 mounting groove 43, and a spring 46 is fixedly arranged at one end of the spring 45, and the spring 46 is movably arranged inside the groove 34, and a locking assembly 5 is arranged at one end of the fixing plate 11 and the movable plate 12 away from the connecting shaft 112.

[0028] The first connecting ring 1 is vertically arranged on one side of the second connecting ring 2, and the fixed plate 11 and the movable plate 12 are both arranged in an arc shape.

[0029] The connecting block 121 is movably disposed inside the connecting groove 111 , and the connecting shaft 112 is rotatably disposed inside the through hole 122 .

[0030] The anti-skid sheet 131 is provided with an anti-skid protrusion on one side close to the anti-skid pad 132 , and the outer surface of the anti-skid protrusion is arranged in an arc shape.

[0031] The No. 1 screw hole 32 and the No. 2 screw hole 42 are detachably connected to the corresponding fixing holes 113 via screws.

[0032] The locking assembly 5 includes two ear plates 51, which are respectively fixed on the outer circumference of one end of the fixed plate 11 and the movable plate 12 away from the connecting shaft 112, a screw 52 is fixed on one side of the ear plate 51 on the movable plate 12, and an open screw groove is opened on the outer edge of the middle part of the ear plate 51 on the fixed plate 11, a nut 53 is threadedly sleeved on the outer end of the screw 52 away from the movable plate 12, and a gasket 54 is movably sleeved between the nut 53 and the ear plate 51 on the movable plate 12.

[0033] like Figure 1-5As shown, the specific implementation method is as follows: when in use, the fixed connecting rod 7 and the extension rod 6 are respectively fixed through the interior of the No. 1 connecting ring 1 and the No. 2 connecting ring 2, and the No. 1 connecting ring 1 and the No. 2 connecting ring 2 are composed of a fixed plate 11 and a movable plate 12, wherein the connecting block 121 is movably arranged in the connecting groove 111, and the connecting shaft 112 is rotatably arranged in the through hole 122, that is, one end of the fixed plate 11 and the movable plate 12 is rotatably connected, and the other end of the fixed plate 11 and the movable plate 12 can be extended to both sides. When installing the fixed connecting rod 7 and the extension rod 6, the nut 53 on the screw 52 is loosened in the reverse direction so that the lock between the two ear plates 51 is released. When the nut 53 is screwed to a certain distance, the movable plate 12 is flipped with the connecting shaft 112 as the center axis, so that the space between the fixed plate 11 and the movable plate 12 is increased, which is convenient for the fixed connecting rod 7 or the extension rod 6 to penetrate. After the fixed connecting rod 7 or the extension rod 6 is installed, the fixed plate 11 and the movable plate 12 are merged, and then The screw rod 52 is inserted into the screw groove which is opened at the outer edge of the middle part of the ear plate 51 on the fixing plate 11, and the nut 53 is screwed forward to lock and fix the two ear plates 51 at the corresponding positions by utilizing the cooperation between the nut 53 and the screw rod 52. The setting of the gasket 54 can improve the locking effect of the nut 53, so that the connecting rod 7 or the extension rod 6 can be clamped and fixed. The clamping piece 13 can increase the friction between the fixing plate 11 and the fixing connecting rod 7 or the extension rod 6. The anti-skid sheet 131 is a hard plastic sheet, and the anti-skid sheet 131 is provided with an anti-skid protrusion on one side close to the anti-skid pad 132. The outer surface of the anti-skid protrusion is arranged in an arc shape, and the interior of the anti-skid protrusion has a buffer cavity 133, which can play a buffering role. Combined with the anti-skid pad 132, it is close to the surface of the fixing connecting rod 7 or the extension rod 6, which effectively prevents the fixing connecting rod 7 or the extension rod 6 from moving along the axial direction. It is more stable when in use, and the overall side surface is smooth and has no protrusion, which will not cause scratches, and is safer to use.

[0034] A fixing hole 113 is formed at the center of the fixing plate 11 and the corresponding clamping plate 13 , and the fixing hole 113 is arranged in a T-shape.

[0035] The No. 1 connecting seat 3 has a No. 1 screw hole 32 at the center of one side close to the No. 1 connecting ring 1 , and the No. 2 connecting seat 4 has a No. 2 screw hole 42 at the center of one side close to the No. 2 connecting ring 2 . Both the No. 1 screw hole 32 and the No. 2 screw hole 42 are arranged corresponding to the fixing hole 113 .

[0036] like Figure 1 , 6As shown in Figure 7, the specific implementation method is as follows: a fixing hole 113 is provided at the center of the fixing plate 11 and its corresponding clip 13, and the fixing hole 113 is arranged in a T shape. The No. 1 screw hole 32 and the No. 2 screw hole 42 are respectively detachably connected to the corresponding fixing holes 113 by screws, and the screws are hidden and embedded in the T-shaped fixing holes 113, so that the fixing plate 11 and the corresponding No. 1 connecting seat 3 or No. 2 connecting seat 4 can be detachably fixed, which is convenient for subsequent disassembly, maintenance or replacement. The No. 1 extension shaft 31 can rotate inside the No. 2 mounting groove 43. When the No. 1 extension shaft 31 rotates a certain angle, the spring 45 can push the spring piece 46 into the groove 34, which can produce a sense of jamming, which is convenient for identifying the rotation angle. One end of the bolt 44 can fix the No. 2 extension shaft 33 through the fixing groove 35, which is convenient for adjusting the use angle of the No. 1 connecting ring 1 and the No. 2 connecting ring 2, and is more convenient to use.

[0037] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0038] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0039] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An internal fixed domino connection device, comprising a first connection ring (1) and a second connection ring (2), wherein the first connection ring (1) and the second connection ring (2) are respectively sleeved with a fixed connecting rod (7) and an extension rod (6), characterized in that: The first connecting ring (1) and the second connecting ring (2) both comprise a fixed sheet (11) and a movable sheet (12); the fixed sheet (11) is movably arranged on one side of the movable sheet (12); a connecting groove (111) is provided at one end of the fixed sheet (11); a connecting shaft (112) is fixedly arranged inside the connecting groove (111); a connecting block (121) is fixedly arranged at one end of the movable sheet (12); a through hole (122) is provided inside the connecting block (121); and clamping sheets (13) are fixedly arranged on the opposite inner sides of the fixed sheet (11) and the movable sheet (12); the clamping sheets (13) comprise anti-slip sheets (131). and an anti-skid pad (132), and the anti-skid sheet (131) and the anti-skid pad (132) are adhesively connected, a buffer cavity (133) is provided inside the anti-skid sheet (131), a side of the No. 1 connecting ring (1) close to the No. 2 connecting ring (2) is provided with a No. 1 connecting seat (3), a side of the No. 1 connecting seat (3) away from the No. 1 connecting ring (1) is fixedly provided with a No. 1 extension shaft (31) and a No. 2 extension shaft (33), opposite ends of the No. 1 extension shaft (31) and the No. 2 extension shaft (33) are rotatably connected via a bearing, and the No. 2 extension shaft (33) is fixedly provided on the No. 1 extension shaft (31) away from the No. 1 connecting seat (3). A groove (34) is formed on the surface of the No. 1 extension shaft (31), and a plurality of groups of grooves (34) are arranged around the No. 1 extension shaft (31). A fixing groove (35) is formed on the surface of the No. 2 extension shaft (33). A No. 2 connection seat (4) is formed on the side of the No. 2 connection ring (2) close to the No. 1 connection seat (3). A No. 1 installation groove (41) and a No. 2 installation groove (43) are formed on the side of the No. 2 connection seat (4) away from the No. 2 connection ring (2). The No. 2 installation groove (43) is located on the side of the No. 1 installation groove (41) away from the No. 2 connection ring (2). The outer peripheral surface of the No. 2 connection seat (4) corresponds to the No. 1 installation groove (41). Two through holes are provided at the position of the mounting groove (41) and are axially symmetrically arranged about the horizontal central axis of the second connecting seat (4), and bolts (44) are provided inside the through holes. A locking screw hole matching the bolts (44) is provided at the position of the surface of the fixing groove (35) corresponding to the bolts (44). A spring (45) is fixedly provided on the inner wall of the second mounting groove (43). A spring (46) is fixedly provided at one end of the spring (45), and the spring (46) is movably provided inside the groove (34). A locking assembly (5) is provided at one end of the fixing plate (11) and the movable plate (12) away from the connecting shaft (112); The first connecting ring (1) is vertically arranged on one side of the second connecting ring (2); the fixed plate (11) and the movable plate (12) are both arranged in an arc shape; the connecting block (121) is movably arranged inside the connecting groove (111); and the connecting shaft (112) is rotatably arranged inside the through hole (122); The locking assembly (5) comprises two ear plates (51), the two ear plates (51) being fixedly arranged on the outer peripheral surfaces of one end of the fixed plate (11) and the movable plate (12) away from the connecting shaft (112), respectively; a screw rod (52) is fixedly arranged on one side of the ear plate (51) on the movable plate (12); and an open screw rod groove is provided on the outer edge of the middle part of the ear plate (51) on the fixed plate (11); a nut (53) is threadedly sleeved on the outer end of the screw rod (52) away from the movable plate (12), and a gasket (54) is movably sleeved between the nut (53) and the ear plate (51) on the movable plate (12).

2. The internal fixed domino connection device according to claim 1, characterized in that: The fixing plate (11) and its corresponding clamping plate (13) are both provided with a fixing hole (113) at the centre, and the fixing hole (113) is arranged in a T-shape.

3. The internal fixed domino connection device according to claim 2, characterized in that: The first connecting seat (3) is provided with a first screw hole (32) at the center of one side close to the first connecting ring (1), and the second connecting seat (4) is provided with a second screw hole (42) at the center of one side close to the second connecting ring (2). Both the first screw hole (32) and the second screw hole (42) are arranged corresponding to the fixing hole (113).

4. The internal fixed domino connection device according to claim 1, characterized in that: The anti-slip sheet (131) is provided with an anti-slip protrusion on one side close to the anti-slip pad (132), and the outer surface of the anti-slip protrusion is arranged in an arc shape.

5. The internal fixed domino connection device according to claim 3, characterized in that: The No. 1 screw hole (32) and the No. 2 screw hole (42) are respectively detachably connected to the corresponding fixing holes (113) via screws.

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