CN211911776U

CN211911776U - Novel combined hollow compression screw

Info

Publication number: CN211911776U
Application number: CN201921112443.4U
Authority: CN
Inventors: 迮仁浩; 李进; 方建辉; 缪荣芹
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-11-13
Anticipated expiration: 2029-07-16

Abstract

The utility model relates to the technical field of medical equipment, and a novel hollow forcing screw of combination formula is disclosed, including the body of rod and screw thread needle, the one end of the body of rod is provided with the screw thread, and the body of rod is kept away from threaded one end and is provided with the nut, is provided with the through-hole that is used for through the screw thread needle on the center pin of the body of rod, and the bottom and the nut of through-hole are linked together, and the screw thread needle includes the screw thread section, and the upper and lower both ends of screw thread section are the first support section of fixedly connected with and second support section respectively, and the bottom of through-hole is provided with. The utility model discloses can fix by effectual femoral neck fracture, improve the stability ability of screw, and can adjust the length of screw according to epiphysis, can conveniently insert femoral neck fracture simultaneously with two bodies of rod simultaneously in, and be convenient for adjust distance and angle between two bodies of rod.

Description

Novel combined hollow compression screw

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to novel hollow forcing screw of combination formula.

Background

Femoral neck fractures often occur in the elderly, and the incidence of the fractures gradually increases with the life of the elderly, and especially with the aging population, the fractures become a serious social problem. Two main problems of fracture nonunion and avascular necrosis of femoral head exist in clinical treatment. To date, many unsolved problems remain in many aspects such as treatment and outcome of femoral neck fractures.

At present, the femoral neck fracture of children is fixed by a reduction hollow compression screw clinically, but the length and the thread depth of the hollow screw are highly required due to the existence of a femoral head epiphysis line of the children, the screw cannot penetrate the epiphysis line, and the fixing strength of the screw is insufficient, so that the recovery of the femoral neck fracture is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving among the prior art to children's femoral neck fracture, it is fixed to adopt the hollow forcing screw that resets clinically often, nevertheless children have very high requirement to hollow screw's length and thread depth because of the existence of femoral head epiphysis line to the screw can not pierce through the epiphysis line, and screw fixation intensity is not enough, thereby influences the problem that femoral neck fracture resumes, and the novel hollow forcing screw of combination formula that proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

novel hollow forcing screw of combination formula, including the body of rod and screw thread needle, the one end of the body of rod is provided with the screw thread, the one end that the screw thread was kept away from to the body of rod is provided with the nut, be provided with the through-hole that is used for through the screw thread needle on the center pin of the body of rod, and the bottom and the nut of through-hole are linked together, the screw thread needle includes the screw thread section, the upper and lower both ends of screw thread section are the first support section of fixedly connected with and the second support section respectively, the bottom of through-hole is provided with the internal thread corresponding with the screw thread section on.

Preferably, the first support section and the second support section have different lengths, the thread section can be disconnected, and the length of the threaded needle is 1.5 mm.

Preferably, the length of the thread on the rod body is 1.0-1.5 cm, and the diameter of the through hole on the rod body is 1.5 mm.

Preferably, the bottom of the nut is movably connected with a cover plate, the top of the cover plate is fixedly connected with two symmetrically distributed buckles, and the bottom of the nut is provided with a clamping groove corresponding to the buckles.

Preferably, adjustment mechanism is including adjusting the box, the opening has all been seted up to the left and right sides of adjusting the box, sliding connection has the fixed block in the adjusting box, the fixed plate of two symmetric distributions of lateral wall fixedly connected with of fixed block, two the relative one side of fixed plate rotates jointly and is connected with the bull stick, the lateral wall fixedly connected with connecting rod of bull stick, the lateral wall fixed connection of one end and the nut of bull stick is kept away from to the connecting rod, one side fixedly connected with pull rod of fixed plate is kept away from to the fixed block, the one end fixedly connected with that the fixed block was kept away from to the pull rod draws the piece, draw the surface of piece and set up threaded hole, and screw hole female connection has the bolt, the bar opening.

Preferably, the opposite sides of the two pulling blocks are fixedly connected with a spring together.

Preferably, the fixed block and the bottom of pulling the piece all fixedly connected with slider, the bottom inner wall of adjusting box is seted up the spout with slider accordant connection.

Preferably, the bottom of the adjusting box is fixedly connected with an extrusion block.

Preferably, the rod body and the threaded needle are both made of stainless steel.

Compared with the prior art, the utility model provides a novel hollow forcing screw of combination formula possesses following beneficial effect:

1. this novel hollow compression screw of combination formula, through being provided with the body of rod and screw thread needle, when needs are fixed femoral neck fracture, insert the body of rod earlier, fix the body of rod through the screw thread on using the body of rod, again through in the through-hole with the screw thread needle screw in body of rod, be provided with the screw thread section on the screw thread needle, internal thread phase-match in the through-hole on accessible screw thread section and the body of rod, the screw thread needle rotates, make the screw thread needle insert, and with the screw thread section on the broken screw thread needle of exerting oneself, take off the second support segment, through the air compression screw that adopts the combination formula, can fix by effectual femoral neck fracture, the stability of screw has been improved, and can adjust the length of screw according to the epiphysi.

2. The novel combined hollow compression screw is provided with an adjusting mechanism, when two rod bodies need to be inserted into and inserted into femoral neck fracture, the rod bodies are adjusted according to the inserted positions and angles as required, a bolt is rotated to enable the bolt to be screwed out of a pulling block, the bolt is pulled to slide in a strip-shaped opening and pull the pulling block, the pulling block slides in a chute through a slider and pulls a pull rod, the pull rod pulls a fixed block, the fixed block slides in the chute through the slider, a fixed block pulls a fixed plate, the fixed plate pulls a rotating rod, the rotating rod pulls a connecting rod, the connecting rod pulls a nut, the distance between the two rod bodies is adjusted, when different insertion angles need to be adjusted, the rod bodies are rotated, the rod bodies drive the nut to rotate, the nut drives the connecting rod to rotate, the connecting rod drives the rotating rod to rotate, different insertion angles are adjusted, two nuts of regulating box extrusion, the nut extrusion body of rod can be convenient insert the femoral neck fracture with two bodies of rod simultaneously in, and is convenient for adjust distance and angle between two bodies of rod.

The part that does not relate to in the device all is the same with prior art or can adopt prior art to realize, the utility model discloses can effectual femoral neck fracture fix, improve the stability can of screw, and can adjust the length of screw according to the epiphysis, can conveniently insert the femoral neck fracture simultaneously with two body of rods simultaneously in, and be convenient for adjust distance and angle between two body of rods.

Drawings

Fig. 1 is a schematic structural view of the novel combined hollow compression screw provided by the present invention;

fig. 2 is a schematic structural view of the novel combined hollow compression screw body provided by the present invention;

fig. 3 is a schematic structural view of the novel combined hollow compression screw and threaded nail provided by the utility model;

fig. 4 is a schematic top view of the novel combined hollow compression screw according to the present invention;

fig. 5 is a schematic structural view of a portion a of the novel combined hollow compression screw provided by the present invention.

In the figure: the device comprises a rod body 1, a thread needle 2, a nut 3, a thread section 4, a first support section 5, a second support section 6, an internal thread 7, an adjusting mechanism 8, an adjusting box 81, a fixing block 82, a fixing plate 83, a rotating rod 84, a connecting rod 85, a pull rod 86, a pull block 87, a bolt 88, a cover plate 9, a buckle 10, a spring 11 and an extrusion block 12.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-5, a novel combined hollow compression screw comprises a rod body 1 and a threaded needle 2, wherein a thread is arranged at one end of the rod body 1, a nut 3 is arranged at one end of the rod body 1 far away from the thread, a through hole for passing through the threaded needle 2 is arranged on a central shaft of the rod body 1, the bottom of the through hole is communicated with the nut 3, the threaded needle 2 comprises a threaded section 4, the upper end and the lower end of the threaded section 4 are fixedly connected with a first supporting section 5 and a second supporting section 6 respectively, an internal thread 7 corresponding to the threaded section 4 is arranged at the bottom of the through hole on the rod body 1, an adjusting mechanism 8 is movably connected to one side opposite to the two nuts 3 together, when femoral neck fracture needs to be fixed, the rod body 1 is inserted first, the rod body 1 is fixed by using the thread on the rod body 1, the threaded needle 2 is screwed into, accessible screw thread section 4 and the internal thread 7 phase-match in the through-hole on the body of rod 1 rotate screw thread needle 2, make screw thread needle 2 insert to with the power screw thread section 4 on the screw thread needle 2 of breaking, take off second support section 6, through the air compression screw that adopts the combination formula, can effectual femoral neck fracture fix, improved the stability can of screw, and can adjust the length of screw according to the epiphysis.

The first support section 5 and the second support section 6 are different in length, the thread section 4 can be disconnected, and the length of the thread needle 2 is 1.5 mm.

The length of the screw thread on the rod body 1 is 1.0-1.5 cm, and the diameter of the through hole on the rod body 1 is 1.5 mm.

The bottom swing joint of nut 3 has apron 9, and the buckle 10 of two symmetric distributions of the top fixedly connected with of apron 9, the draw-in groove corresponding with buckle 10 has been seted up to the bottom of nut 3, can effectually prevent that the screw from droing.

The adjusting mechanism 8 comprises an adjusting box 81, openings are formed in the left side and the right side of the adjusting box 81, a fixing block 82 is connected in the adjusting box 81 in a sliding mode, two fixing plates 83 which are symmetrically distributed are fixedly connected to the side wall of the fixing block 82, a rotating rod 84 is connected to the opposite sides of the two fixing plates 83 in a rotating mode, a connecting rod 85 is fixedly connected to the side wall of the rotating rod 84, one end, far away from the rotating rod 84, of the connecting rod 85 is fixedly connected with the side wall of the nut 3, a pull rod 86 is fixedly connected to one side, far away from the fixing plate 83, of the fixing block 82, a pull block 87 is fixedly connected to one end, far away from the fixing block 82, of the pull block 87, a threaded hole is formed in the surface of the pull block 87, a bolt 88 is connected in the threaded hole in a threaded mode, a strip-, rotating the bolt 88 to make the bolt 88 rotate out of the pulling block 87, pulling the bolt 88, the bolt 88 slides in the strip-shaped opening, and pulling the pulling block 87, the pulling block 87 slides in the sliding groove through the sliding block, and pulling the pulling rod 86, the pulling rod 86 pulls the fixing block 82, the fixing block 82 slides in the sliding groove through the sliding block, the fixing block 82 pulls the fixing plate 83, the fixing plate 83 pulls the rotating rod 84, the rotating rod 84 pulls the connecting rod 85, the connecting rod 85 pulls the nut 3 to adjust the distance between the two rod bodies 1, when different insertion angles need to be adjusted, the rod bodies 1 are rotated, the rod bodies 1 drive the nut 3 to rotate, the nut 3 drives the connecting rod 85 to rotate, the connecting rod 85 drives the rotating rod 84 to rotate, different insertion angles are adjusted, the extrusion block 12 is extruded, the extrusion block 12 extrudes the adjustment box 81, the adjustment box 81 extrudes the two nuts 3, the nut 3 extrud, and is convenient for adjust the distance and angle between two body of rod 1.

The spring 11 is fixedly connected to one side, opposite to the two pull blocks 87, of the two pull blocks, and the distance between the two pull blocks can be adjusted conveniently.

The fixed block 82 and the equal fixedly connected with slider in bottom of drawing piece 87, the bottom inner wall of adjusting box 81 set up with slider accordant connection's spout, can conveniently carry on spacingly to fixed block 82 and drawing piece 87, be convenient for it slides.

The bottom of the adjusting box 81 is fixedly connected with an extrusion block 12, which can conveniently extrude the adjusting box 81.

The rod body 1 and the threaded needle 2 are made of stainless steel, so that the problem that the rod body 1 and the threaded needle 2 are rusted and cannot be pulled out easily in femoral neck fracture can be solved.

In the utility model, when the femoral neck fracture needs to be fixed, the rod body 1 is inserted firstly, the rod body 1 is fixed by using the thread on the rod body 1, then the threaded needle 2 is screwed into the through hole of the rod body 1, because the threaded section 4 is arranged on the threaded needle 2, the thread section 4 can be matched with the internal thread 7 in the through hole on the rod body 1, the threaded needle 2 is rotated to insert the threaded needle 2, the thread section 4 on the threaded needle 2 is broken forcibly, the second supporting section 6 is taken down, the femoral neck fracture can be effectively fixed by adopting the combined air compression screw, the stability of the screw is improved, the length of the screw can be adjusted according to the epiphysis, when two rod bodies 1 are introduced into the femoral neck fracture, the rod bodies 1 are adjusted according to the inserted position and angle as required, the bolt 88 is rotated, the bolt 88 is screwed out of the pulling block 87, the bolt 88 is pulled, the bolt 88 slides in the strip-shaped opening, the pulling block 87 is pulled, the pulling block 87 slides in the sliding groove through the sliding block, the pulling rod 86 is pulled, the pulling rod 86 pulls the fixed block 82, the fixed block 82 slides in the sliding groove through the sliding block, the fixed block 82 pulls the fixed plate 83, the fixed plate 83 pulls the rotating rod 84, the rotating rod 84 pulls the connecting rod 85, the connecting rod 85 pulls the nut 3 to adjust the distance between the two rod bodies 1, when different insertion angles need to be adjusted, the rod body 1 is rotated, the rod body 1 drives the nut 3 to rotate, the nut 3 drives the connecting rod 85 to rotate, the connecting rod 85 drives the rotating rod 84 to rotate, different insertion angles are adjusted, the extruding block 12 is extruded, the adjusting block 81 is extruded by the extruding block 12, the adjusting block 81 extrudes the two nuts 3, the nut 3, and is convenient for adjust the distance and angle between two body of rod 1.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. Novel hollow forcing screw of combination formula, including the body of rod (1) and screw thread needle (2), its characterized in that, the one end of the body of rod (1) is provided with the screw thread, the one end that the screw thread was kept away from in the body of rod (1) is provided with nut (3), be provided with the through-hole that is used for through screw thread needle (2) on the center pin of the body of rod (1), and the bottom and nut (3) of through-hole are linked together, screw thread needle (2) are including screw thread section (4), the upper and lower both ends of screw thread section (4) are first support section (5) of fixedly connected with and second support section (6) respectively, the bottom of through-hole is provided with internal thread (7) corresponding with screw thread section (4) on the body of rod (1), two the common swing joint in one.

2. The novel combined hollow forcing screw according to claim 1, characterized in that the first support section (5) and the second support section (6) have different lengths, the threaded section (4) is breakable, and the length of the needle (2) is 1.5 mm.

3. The novel combined hollow compression screw as claimed in claim 1, wherein the length of the thread on the rod body (1) is 1.0-1.5 cm, and the diameter of the through hole on the rod body (1) is 1.5 mm.

4. The novel combined hollow compression screw as claimed in claim 1, wherein the bottom of the nut (3) is movably connected with a cover plate (9), the top of the cover plate (9) is fixedly connected with two symmetrically distributed buckles (10), and the bottom of the nut (3) is provided with a clamping groove corresponding to the buckles (10).

5. The novel combined hollow compression screw according to claim 1, wherein the adjusting mechanism (8) comprises an adjusting box (81), the adjusting box (81) is provided with openings on both the left and right sides, a fixing block (82) is slidably connected in the adjusting box (81), the side wall of the fixing block (82) is fixedly connected with two symmetrically distributed fixing plates (83), the opposite sides of the two fixing plates (83) are jointly and rotatably connected with a rotating rod (84), the side wall of the rotating rod (84) is fixedly connected with a connecting rod (85), one end of the connecting rod (85) far away from the rotating rod (84) is fixedly connected with the side wall of the nut (3), one side of the fixing block (82) far away from the fixing plate (83) is fixedly connected with a pull rod (86), one end of the pull rod (86) far away from the fixing block (82) is fixedly connected with a pull block (87), the surface of the pull block (87) is provided with a threaded hole, a bolt (88) is connected to the threaded hole in a threaded manner, and the surface of the adjusting box (81) is provided with a strip-shaped opening corresponding to the bolt (88).

6. A novel combined hollow forcing screw according to claim 5, characterized in that the opposite sides of the two pulling blocks (87) are jointly fixedly connected with a spring (11).

7. The novel combined hollow forcing screw of claim 5, wherein the bottom of the fixed block (82) and the bottom of the pulling block (87) are both fixedly connected with sliding blocks, and the inner wall of the bottom of the adjusting box (81) is provided with a sliding groove in matching connection with the sliding blocks.

8. The novel combined hollow forcing screw of claim 5, characterized in that the bottom of the adjusting box (81) is fixedly connected with the pressing block (12).

9. The novel combined hollow forcing screw of claim 1, wherein the rod body (1) and the threaded needle (2) are made of stainless steel.