Resetting device for joint surface collapse at fracture position

Abstract

The utility model relates to the technical field of bone joint reduction devices, and discloses a fracture joint surface collapse reduction device which comprises an outer sleeve, a handle is fixedly installed outside the outer sleeve, a reduction driving mechanism is arranged in the outer sleeve in a manner of extending to the right side, and a jacking reduction mechanism is arranged in the outer sleeve in a manner of extending to the left side. The reset driving mechanism comprises a jacking assembly and a mounting assembly, the jacking assembly is arranged on the right side of the outer sleeve and extends into the outer sleeve, and the mounting assembly is arranged outside the right side of the outer sleeve. According to the reduction device for fracture articular surface collapse, through the arranged reduction driving mechanism, by fixing a handle and rotating a rotary knob, a threaded rod drives a reduction jacking end to conduct jacking repair on the collapse position, the repair stroke of the reduction jacking end is controlled by controlling the number of turns of rotation of the rotary knob, and therefore the effect of accurately repairing the collapse position is achieved; and meanwhile, through the arrangement of the mounting assembly, the threaded rod can be detached for disinfection treatment.

Description

Technical Field

[0001] The utility model relates to the technical field of bone joint reduction devices, in particular to a device for reducing the collapse of the joint surface at a fracture. Background Art

[0002] The tibial plateau is an important load-bearing structure of the knee joint. When the tibial plateau is fractured and collapsed, surgical treatment is required. By using a reducer to repair the collapsed area, the patient can recover better.

[0003] Currently, during the repair surgery for tibial plateau fracture collapse, the skin is incised to expose the proximal end of the tibia, and then a window is made in the bone cortex. A repair push rod is inserted into the bone window, and the collapsed joint surface is restored by hammering or pushing with hands. However, in actual use, the force of the reduction and the stroke of the push rod cannot be accurately controlled by hammering and pushing with hands, so that the recovery position needs to be adjusted many times during the operation. Therefore, it is necessary to improve a device for reducing the collapse of the joint surface at the fracture site to solve the above problem. Utility Model Content

[0004] The purpose of the utility model is to provide a device for reducing the collapse of the articular surface at a fracture site, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for reducing the collapse of the articular surface at a fracture site, comprising an outer sleeve, a handle fixedly mounted on the outside of the outer sleeve, a reduction drive mechanism extending from the inside of the outer sleeve to the right side, and a top-moving reduction mechanism extending from the inside of the outer sleeve to the left side.

[0006] The reset drive mechanism comprises a push-up assembly and a mounting assembly. The push-up assembly is arranged on the right side of the outer sleeve and extends to the inside, and the mounting assembly is arranged on the right side outside of the outer sleeve.

[0007] Preferably, the pushing assembly includes a connecting cap, which is inserted into the right side of the outer sleeve, a threaded rod is rotatably installed inside the connecting cap, and a knob is fixedly installed on the right side of the threaded rod to facilitate external driving of the threaded rod to rotate.

[0008] Preferably, a groove is provided inside the connecting cap, and a protrusion is provided on the inner wall of the outer sleeve. The connecting cap is positioned and plugged into the right side of the outer sleeve through the groove and the protrusion, so that the connecting cap is positioned and connected to the right side of the outer sleeve.

[0009] Preferably, the mounting assembly comprises a fixing seat, the fixing seat is fixedly mounted on the right outer side of the outer sleeve, and a rotating sleeve is rotatably mounted inside the fixing seat to facilitate limited rotation of the rotating seat.

[0010] Preferably, the outside of the connecting cap is provided with an external thread, the inner wall of the rotating sleeve is provided with an internal thread, and the connecting cap is threadably installed inside the rotating sleeve, so as to facilitate fixing the connecting cap.

[0011] Preferably, the pushing and resetting mechanism includes a sliding block, which is slidably mounted inside the outer sleeve, a connecting rod is fixedly mounted on the left side of the sliding block, a connecting seat is fixedly mounted on the left side of the connecting rod, a rotating push rod is rotatably mounted inside the connecting seat, a resetting pushing end is fixedly mounted on the end of the rotating push rod away from the connecting seat, a threaded cap is threadedly mounted on the left side of the outer sleeve, and scale lines are provided on the outside of the rotating push rod, so that the length of the rotating push rod entering can be observed through the scale lines, so that the resetting push rod can perform pushing and repair on the collapsed joint.

[0012] Preferably, a limiting groove is provided on the outside of the sliding block, a limiting strip is provided on the inner wall of the outer sleeve, and the sliding block is installed inside the outer sleeve for limited sliding through the limiting groove and the limiting strip, so as to facilitate the limited sliding of the sliding block inside the outer sleeve.

[0013] Preferably, threaded holes are provided inside the sliding block and the connecting rod, and the threaded rod is threadedly installed inside the threaded holes, so that the threaded rod can drive the sliding block and the connecting rod to slide.

[0014] Preferably, through holes are provided at corresponding positions of the threaded cap and the connecting rod, and the connecting rod passes through the through holes and is fixedly installed with the connecting seat, so that the connecting rod can slide through the threaded cap.

[0015] Compared with the prior art, the utility model provides a device for reducing the collapse of the articular surface at a fracture, which has the following beneficial effects:

[0016] The device for reducing joint surface collapse at a fracture site has a reduction drive mechanism, during use, by fixing the handle and turning the knob, so that the threaded rod drives the reduction and jacking end to repair the collapsed site, and the number of turns of the knob is controlled to control the repair stroke of the reduction and jacking end, thereby achieving the effect of accurately repairing the collapsed site, and at the same time, the threaded rod can be disassembled for disinfection through the provided installation component.

[0017] The device for reducing joint surface collapse at a fracture site has a push-up reduction mechanism, which can rotate the push rod at multiple angles to reach various parts under the joint surface during use, thereby reducing the collapse of the joint. At the same time, the connecting rod and other components can be disassembled and disinfected through the detachable structure of the threaded cap. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0019] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0020] Figure 2 This is a front sectional structural schematic diagram of the utility model;

[0021] Figure 3 For this utility model Figure 2 A schematic diagram of the structure enlargement in the middle;

[0022] Figure 4 This is a schematic diagram of the exploded structure of the outer sleeve and the connected mechanism of the utility model from the left side;

[0023] Figure 5 This is a right side exploded structural diagram of the outer sleeve and the connected mechanism of the utility model;

[0024] Figure 6 This is a schematic diagram of the exploded structure of the jacking and resetting mechanism of the utility model;

[0025] Figure 7 For this utility model Figure 2 Enlarged schematic diagram of the structure at point B in the middle.

[0026] In the figure: 1. outer sleeve; 2. handle; 3. reset drive mechanism; 31. push assembly; 311. connecting cap; 312. threaded rod; 313. knob; 32. mounting assembly; 321. fixed seat; 322. rotating sleeve; 4. push reset mechanism; 41. sliding block; 42. connecting rod; 43. connecting seat; 44. rotating push rod; 45. reset push end; 46. threaded cap. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Example 1: Please refer to Figure 1-5 The utility model provides a technical solution: a device for reducing joint surface collapse at a fracture, comprising an outer sleeve 1, a handle 2 is fixedly installed on the outside of the outer sleeve 1, a reduction drive mechanism 3 is arranged on the right side of the inner part of the outer sleeve 1, and a top-moving reduction mechanism 4 is arranged on the left side of the inner part of the outer sleeve 1.

[0030] The reset drive mechanism 3 includes a push-up assembly 31 and a mounting assembly 32 . The push-up assembly 31 is arranged on the right side of the outer sleeve 1 and extends to the inside, and the mounting assembly 32 is arranged on the right side outside of the outer sleeve 1 .

[0031] Furthermore, the pushing assembly 31 includes a connecting cap 311, which is inserted into the right side of the outer sleeve 1. A threaded rod 312 is rotatably installed inside the connecting cap 311, and a knob 313 is fixedly installed on the right side of the threaded rod 312 to facilitate external driving of the threaded rod 312 for rotation.

[0032] Furthermore, a groove is provided inside the connecting cap 311 , and a protrusion is provided on the inner wall of the outer sleeve 1 . The connecting cap 311 is positioned and plugged into the right side of the outer sleeve 1 through the groove and the protrusion, so that the connecting cap 311 is positioned and connected to the right side of the outer sleeve 1 .

[0033] Furthermore, the mounting assembly 32 includes a fixing seat 321, which is fixedly mounted on the right outer side of the outer sleeve 1, and a rotating sleeve 322 is rotatably mounted inside the fixing seat 321 to facilitate the limited rotation of the rotating seat.

[0034] Furthermore, the outside of the connection cap 311 is provided with an external thread, the inner wall of the rotating sleeve 322 is provided with an internal thread, and the connection cap 311 is threadedly installed inside the rotating sleeve 322, so as to facilitate fixing the connection cap 311.

[0035] Example 2: Please refer to Figure 6 and Figure 7In combination with the first embodiment, it is further obtained that the jacking and resetting mechanism 4 includes a sliding block 41, which is slidably installed inside the outer sleeve 1, a connecting rod 42 is fixedly installed on the left side of the sliding block 41, a connecting seat 43 is fixedly installed on the left side of the connecting rod 42, a rotating ejector rod 44 is rotatably installed inside the connecting seat 43, and a resetting ejector end 45 is fixedly installed on one end of the rotating ejector rod 44 away from the connecting seat 43, a threaded cap 46 is threadedly installed on the left side of the outer sleeve 1, and a scale line 47 is arranged on the outside of the rotating ejector rod 44, so that the length of the rotating ejector rod 44 entering can be observed through the scale line 47, so that the resetting ejector end 45 can perform jacking repair on the collapsed joint.

[0036] Furthermore, a limiting groove is provided on the outside of the sliding block 41, a limiting strip is provided on the inner wall of the outer sleeve 1, and the sliding block 41 is installed inside the outer sleeve 1 for limiting sliding through the limiting groove and the limiting strip, so as to facilitate the sliding block 41 to limit sliding inside the outer sleeve 1.

[0037] Furthermore, threaded holes are provided inside the sliding block 41 and the connecting rod 42, and the threaded rod 312 is threadedly installed inside the threaded holes, so that the threaded rod 312 can drive the sliding block 41 and the connecting rod 42 to slide.

[0038] Furthermore, through holes are provided at corresponding positions of the threaded cap 46 and the connecting rod 42 , and the connecting rod 42 passes through the through holes and is fixedly installed with the connecting seat 43 , so that the connecting rod 42 can slide through the threaded cap 46 .

[0039] The screw cap 311 is screwed into the screw hole 314 of the outer sleeve 1 and the screw cap 312 is screwed into the screw hole 314 of the outer sleeve 1. The screw cap 311 is screwed into the screw hole 314 of the outer sleeve 1 and the screw cap 312 is screwed into the screw hole 314 of the outer sleeve 1. The screw cap 311 is screwed into the screw hole 314 of the outer sleeve 1 and the screw cap 312 is screwed into the screw hole 314 of the outer sleeve 1. The screw cap 311 is screwed into the screw hole 314 of the outer sleeve 1 and the screw cap 312 is screwed into the screw hole 314 of the outer sleeve 1. The screw cap 311 is screwed into the screw hole 314 of the outer sleeve 1 and the screw cap 312 is screwed into the screw hole 314 of the outer sleeve 1.

[0040] During the operation, a window is opened in the bone cortex, and the resetting push end 45 and the rotating push rod 44 are inserted into the bone window. Then the handle 2 is fixed, and the knob 313 is turned to drive the threaded rod 312 to rotate, so that the threaded rod 312 drives the sliding block 41 and the connecting rod 42 to slide to the left, so that the connecting rod 42 drives the rotating push rod 44 to push upward through the connecting seat 43, so that it drives the resetting push end 45 to repair the collapsed part.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A device for reducing articular surface collapse at a fracture site, comprising an outer sleeve (1), characterized in that: A handle (2) is fixedly mounted on the outside of the outer sleeve (1), a reset drive mechanism (3) is arranged on the inside of the outer sleeve (1) extending to the right, and a push-up reset mechanism (4) is arranged on the inside of the outer sleeve (1) extending to the left; The reset drive mechanism (3) comprises a push-up assembly (31) and a mounting assembly (32); the push-up assembly (31) is arranged on the right side of the outer sleeve (1) and extends to the inside; and the mounting assembly (32) is arranged on the outside of the right side of the outer sleeve (1); The jacking assembly (31) comprises a connecting cap (311) which is plugged into the right side of the outer sleeve (1); a threaded rod (312) is rotatably mounted inside the connecting cap (311); and a knob (313) is fixedly mounted on the right side of the threaded rod (312).

2. A device for reducing articular surface collapse at a fracture according to claim 1, characterized in that: The connection cap (311) is provided with a groove inside, and the inner wall of the outer sleeve (1) is provided with a protrusion. The connection cap (311) is positioned and plugged into the right side of the outer sleeve (1) through the groove and the protrusion.

3. A device for reducing articular surface collapse at a fracture according to claim 1, characterized in that: The mounting assembly (32) comprises a fixing seat (321), wherein the fixing seat (321) is fixedly mounted on the right exterior of the outer sleeve (1), and a rotating sleeve (322) is rotatably mounted inside the fixing seat (321).

4. A device for reducing articular surface collapse at a fracture according to claim 3, characterized in that: The outside of the connection cap (311) is provided with an external thread, the inner wall of the rotating sleeve (322) is provided with an internal thread, and the connection cap (311) is threadably mounted inside the rotating sleeve (322).

5. A device for reducing articular surface collapse at a fracture according to claim 1, characterized in that: The push-up reset mechanism (4) comprises a sliding block (41), the sliding block (41) being slidably mounted inside the outer sleeve (1), a connecting rod (42) being fixedly mounted on the left side of the sliding block (41), a connecting seat (43) being fixedly mounted on the left side of the connecting rod (42), a rotating push rod (44) being rotatably mounted inside the connecting seat (43), a reset push-up end (45) being fixedly mounted on one end of the rotating push rod (44) away from the connecting seat (43), a threaded cap (46) being threadedly mounted on the left side of the outer sleeve (1), and a scale mark (47) being arranged on the outside of the rotating push rod (44).

6. A device for reducing articular surface collapse at a fracture according to claim 5, characterized in that: A limiting groove is provided on the outside of the sliding block (41), a limiting strip is provided on the inner wall of the outer sleeve (1), and the sliding block (41) is slidably mounted inside the outer sleeve (1) via the limiting groove and the limiting strip.

7. A device for reducing articular surface collapse at a fracture according to claim 5, characterized in that: The sliding block (41) and the connecting rod (42) are provided with threaded holes inside, and the threaded rod (312) is threadedly mounted inside the threaded holes.

8. The device for reducing articular surface collapse at a fracture according to claim 5, characterized in that: Through holes are provided at corresponding positions of the threaded cap (46) and the connecting rod (42), and the connecting rod (42) passes through the through hole and is fixedly mounted on the connecting seat (43).

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