CN221285883U

CN221285883U - Screw fracture block reduction fixing device

Info

Publication number: CN221285883U
Application number: CN202322669126.5U
Authority: CN
Inventors: 杨庆
Original assignee: Qingpu Branch Of Zhongshan Hospital Affiliated To Fudan University Shanghai Qingpu District Central Hospital
Current assignee: Qingpu Branch Of Zhongshan Hospital Affiliated To Fudan University Shanghai Qingpu District Central Hospital
Priority date: 2023-10-07
Filing date: 2023-10-07
Publication date: 2024-07-09
Anticipated expiration: 2033-10-07

Abstract

The utility model provides a spiral fracture block reduction fixing device, which comprises a fixing frame and a reduction rod, wherein the fixing frame comprises a horizontal rod and fixing rods detachably arranged at two ends of the horizontal rod, and the front end of the fixing rod is provided with a first drill bit which can be drilled into an unbroken part of a bone joint where a spiral fracture block is positioned; the reset rod is rotatably arranged on the horizontal rod, the front end of the reset rod is provided with a second drill bit which drills into the spiral fracture block, and the rear end of the reset rod is provided with a handle for holding by hand; after the second drill bit of the reset rod drills into the spiral fracture block, the second drill bit rotates around the horizontal rod and can drive the spiral fracture block to rotate to reset, as the fixing rod and the drill bit of the reset rod are only required to be provided with a notch with the length of about 5mm, the second drill bit belongs to minimally invasive operation, the damage to bone blood supply is small, the operation is convenient and quick, the complications are few, the reset rod can reset spiral fracture blocks with various sizes, the practicability is strong, the labor is saved, and the reset angle is easy to control.

Description

Screw fracture block reduction fixing device

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a spiral fracture block reduction fixing device.

Background

Spiral fractures generally refer to breaks in continuity and integrity of the bone caused by external forces, and are locally modified in helicity, with obvious misalignments. When spiral fracture occurs at the parts of the bone joint such as humerus, femur, tibia, pelvis and the like, the bone block needs to be reduced and fixed accurately by micro-wound, so that the bone joint is stabilized, and the aims of early stabilization, healing and functional rehabilitation are achieved.

In the prior art, a common reset forceps is generally used for bone block reset, an arc-shaped clamping part is arranged at the front end of the reset forceps, a hand-held part is arranged at the rear end of the reset forceps, the hand-held part can be controlled to open the clamping part by finger scratching, and a fixing part for fixing the opening angle of the clamping part is further arranged on the reset forceps. When the reduction forceps are used for reduction, the reduction position is required to be cut firstly and then fixed, the incision is larger, sometimes the reduction is difficult, especially the screw fracture block larger than 5 cm cannot be used for reduction of fracture by reverse screw, the incision has large damage to blood supply of the bone joint part, the wound is larger, bleeding, infection, bone nonunion and the like are easy to occur, and the operation by bare hands is time-consuming and labor-consuming.

Therefore, the above prior art has at least the following technical problems: in the prior art, the reset forceps are used for resetting the spiral fracture blocks, so that the incision is large, the damage to the blood supply of the bone joint part is large, and time and labor are wasted.

Disclosure of utility model

The embodiment of the application solves the technical problems of large damage to blood supply at the joint part of a bone and time and labor waste caused by large incision when the spiral fracture block is reset by using the reset forceps in the prior art by providing the spiral fracture block reset fixing device.

In order to solve the above technical problems, an embodiment of the present application provides a screw fracture block reduction fixing device, including:

The fixing frame comprises a horizontal rod and fixing rods which are detachably arranged at two ends of the horizontal rod, and a first drill bit which can be drilled into an unbroken part of a bone joint where the spiral fracture block is arranged at the front end of the fixing rod so as to fix the fixing frame;

The reset rod is rotatably arranged on the horizontal rod, the front end of the reset rod is provided with a second drill bit which drills into the spiral fracture block, and the rear end of the reset rod is provided with a handle for holding by hand;

after the second drill bit of the reset rod drills into the spiral fracture block, the reset rod can rotate around the horizontal rod so as to drive the spiral fracture block to rotate to reset.

Further, the inside of the reset rod is penetrated along the axial direction thereof, and a channel for a fixing nail to pass through is formed, wherein the fixing nail is used for fixing the spiral fracture block on the bone joint.

Further, the reset fixing device further comprises a compass, the compass is arranged on the fixing frame, and a plurality of fixed gear blocks are arranged on the compass at intervals along the rotating track of the reset rod;

After the reset rod drives the spiral fracture block to rotate by a preset reset angle, the reset rod can be blocked on the corresponding gear block so as to lock the rotation angle of the reset rod.

Further, the connection mode of the horizontal rod and the fixing rod is specifically as follows:

The two ends of the horizontal rod are respectively connected with a radial cylinder, a through hole for the fixing rod to penetrate is formed in the radial cylinder, a locking screw is arranged on one side of the radial cylinder, the outer end of the locking screw is exposed out of the radial cylinder, and the inner end of the locking screw extends into the radial cylinder and abuts against the fixing rod in the radial cylinder so as to fix the fixing rod and the horizontal rod mutually.

Further, the horizontal rod can be telescopic and locked along the axial direction of the horizontal rod.

Further, the horizontal bar includes:

the inner end of the first rod body is provided with external threads;

the inner end of the second rod body is provided with an axial insertion cavity for inserting the inner end of the first rod body, and an internal thread is arranged in the insertion cavity;

The inner end of the first rod body can be inserted into the axial insertion cavity, and the mutual connection of the preset length is realized through the cooperation of the external thread and the internal thread, so that the horizontal rod is telescopic and locked along the axial direction of the horizontal rod.

Further, a rotating piece is connected to the outer wall of the reset rod, a rotating hole penetrating along the axial direction of the horizontal rod is formed in the rotating piece, the horizontal rod penetrates through the rotating hole, and the rotating hole allows the reset rod to rotate around the horizontal rod.

Further, the compass is fan-shaped, the centre of a circle of compass is fixed wears to establish on the horizon bar, the compass towards be provided with the gear piece along the circular arc equidistant on the one side of reset lever, the bottom surface of gear piece is fixed on the compass, the top surface of gear piece protrusion in the compass, just the gear piece has elasticity.

Further, the compass is semicircular, and angle scales are arranged on the compass along the circular arc so as to indicate the rotation angle of the reset rod.

Further, the first drill bit is a pointed end, and a section of first drilling threads is arranged on the fixing rod from the first drill bit to the rear end of the fixing rod so as to drill into bones;

The second drill bit is a hollow drill bit, and a section of second drilling threads is arranged on the reset rod from the second drill bit to the rear end so as to drill into the spiral fracture block conveniently.

One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages:

(1) The fixing frame is fixed in the peripheral bone of the spiral fracture block through setting up the dead lever to provide the axis of rotation for the reset lever, allow the reset lever to wind the horizon bar rotates, works as the second drill bit of reset lever is bored behind the spiral fracture block, can drive the spiral fracture block rotates and ends the reduction, because the fixed incision that only needs to set up a length about 5mm of dead lever, the reset lever is bored the spiral fracture block also only need set up an incision of length about 5mm, belongs to minimally invasive operation, and is little to the destruction of bone blood supply, convenient and fast, complication is few, and the reset lever can reset for the spiral fracture block of multiple size, and the practicality is strong, and it utilizes the reset lever rotation to drive the spiral fracture block and resets simultaneously, and is very laborsaving, and rotation angle easily control, has effectively solved among the prior art and has used the reset pliers to reset, and the incision is great, leads to bone joint position blood supply to destroy big, and the technical problem that wastes time and energy.

(2) The reset rod is internally communicated along the axial direction of the reset rod, a channel for the fixing nail to pass through is formed, the spiral fracture block is directly fixed through the reset rod, and the operation efficiency is effectively improved.

(3) The reset fixing device further comprises a compass, a plurality of fixed gear blocks are arranged on the compass along the rotating track of the reset rod at intervals, the reset rod drives the spiral fracture blocks to rotate by a target angle, and the reset rod can resist the gear blocks to lock the rotating angle of the reset rod, so that the reset rod can be conveniently and directly fixed to the spiral fracture blocks, and the reset fixing device can be operated by a single person, and the practicality, convenience and operation efficiency of the reset fixing device are improved.

(4) The horizontal rod can be extended and retracted along the axial direction of the horizontal rod and locked, so that the horizontal rod is suitable for various use occasions and the practicability is improved.

(5) The compass is provided with angle scales along the circular arc to indicate the rotation angle of the reset rod, so that the reset angle of the spiral fracture block is indicated, and the accuracy of resetting the spiral fracture block is improved.

(6) The second drill bit is a hollow drill bit, and a section of second drilling threads is arranged on the reset rod from the second drill bit to the rear end so as to drill into the spiral fracture block conveniently.

(7) The first drill bit is a pointed end, and a section of first drilling threads is arranged on the fixing rod from the first drill bit to the rear end of the fixing rod so as to drill into bones.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a screw-type reduction fixation device for fracture according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram showing a second embodiment of a screw fracture reduction fixation device according to the present utility model;

FIG. 3 is a schematic view of a screw-type reduction fixation device for fracture according to an embodiment of the present utility model;

FIG. 4 is a side view of a screw-type fracture reduction fixation device according to an embodiment of the present utility model;

fig. 5 is a schematic structural view of a screw fracture reduction fixing device according to an embodiment of the present utility model.

Detailed Description

The technical scheme in the embodiment of the application aims to solve the technical problems, and the overall thought is as follows:

The fixing frame is fixed in the peripheral bone of the spiral fracture block through setting up the dead lever to provide the axis of rotation for the reset lever, allow the reset lever to wind the horizon bar rotates, works as the second drill bit of reset lever is bored behind the spiral fracture block, can drive the spiral fracture block rotates and ends the reduction, because the fixed incision that only needs to set up a length about 5mm of dead lever, the reset lever is bored the spiral fracture block also only need set up an incision of length about 5mm, belongs to minimally invasive operation, and is little to the destruction of bone blood supply, convenient and fast, complication is few, and the reset lever can reset for the spiral fracture block of multiple size, and the practicality is strong, and it utilizes the reset lever rotation to drive the spiral fracture block and resets simultaneously, and is very laborsaving, and rotation angle easily control, has effectively solved among the prior art and has used the reset pliers to reset, and the incision is great, leads to bone joint position blood supply to destroy big, and the technical problem that wastes time and energy.

In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.

In one or more embodiments of the present application, a screw-type fracture reduction fixation device is provided for reducing and fixing a screw-type fracture piece when a screw-type large fracture occurs in a bone joint such as a humerus, a femur, a tibia, a pelvis, etc., although the reduction fixation device may be used in other applications in other embodiments, and is not limited thereto.

As shown in fig. 1 to 5, an embodiment of the present application provides a screw-shaped fracture block reduction fixing device including:

The fixing frame comprises a horizontal rod 200 and fixing rods 300 detachably arranged at two ends of the horizontal rod 200, and a first drill bit 310 capable of drilling into an unbroken part of a bone joint where the spiral fracture block is positioned is arranged at the front end of the fixing rod 300 so as to fix the fixing frame;

a reset rod 100 rotatably disposed on the horizontal rod 200, the front end of the reset rod 100 having a second drill bit 110 penetrating into the spiral fracture block, the rear end of the reset rod 100 having a handle 120 for hand gripping;

After the second drill bit 110 of the reduction rod 100 is driven into the spiral fracture block, the second drill bit rotates around the horizontal rod 200 to drive the spiral fracture block to rotate until the reduction is achieved.

As can be seen from the above description, according to the embodiment of the present application, the fixing frame is fixed in the bone around the spiral fracture block by setting the fixing rod 300, so as to provide a rotation axis for the reduction rod 100, allow the reduction rod 100 to rotate around the horizontal rod 200, when the second drill bit 110 of the reduction rod 100 drills into the spiral fracture block, the spiral fracture block can be driven to rotate and reset, and since the fixing rod 300 is fixed by only providing an incision with a length of about 5mm, the reduction rod 100 drills into the spiral fracture block and also only provides an incision with a length of about 5mm, which belongs to a minimally invasive operation, the reduction rod 100 can reduce the bone blood supply, and has the advantages of high practicality, and meanwhile, the reduction rod 100 can drive the spiral fracture block to reset by rotating the reduction rod 100, so that the rotation angle is easy to control, and the technical problems of great bone joint blood supply damage and time and labor waste caused by using the reduction pliers to reset the spiral fracture block in the prior art are effectively solved.

The bone joint where the spiral fracture block is located is a bone joint where spiral fracture occurs, and generally includes a humerus, a femur, a tibia, a pelvis, and the like.

Further, as shown in fig. 1 to 3, the reduction rod 100 is internally perforated in the axial direction thereof, and a passage 130 is formed through which a fixing pin for fixing the screw-shaped fracture block to the bone joint is passed.

Specifically, the screw fracture block is directly fixed by the reduction rod 100, so that the operation efficiency is effectively improved; the fixation nail is a k-wire or screw for fracture, and is used for fixing the spiral fracture block to a portion where the spiral fracture is not generated on a bone joint (humerus, femur, tibia, pelvis, etc.) where the spiral fracture occurs.

In an embodiment of the present application, as shown in fig. 1 to 5, the reset fixing device further includes a compass 400, the compass 400 is disposed on the fixing frame, and a plurality of fixed gear blocks 410 are disposed on the compass 400 along the rotation track of the reset lever 100 at intervals;

After the reset rod 100 drives the spiral fracture block to rotate by a target angle, the reset rod 100 can resist on the gear block 410 to lock the rotation angle of the reset rod 100, so that the reset rod 100 can be conveniently and directly fixed on the spiral fracture block, and the reset fixing device can be operated by a single person, and the practicality, convenience and operation efficiency of the reset fixing device are improved.

In an embodiment of the present application, as shown in fig. 1 to 5, the connection manner between the horizontal rod 200 and the fixing rod 300 is specifically as follows:

The two ends of the horizontal rod 200 are respectively and fixedly connected with a radial cylinder 230, a through hole for the fixing rod 300 to penetrate is formed in the radial cylinder 230, a locking screw 240 is arranged on one side of the radial cylinder 230, the outer end of the locking screw 240 is exposed out of the radial cylinder 230, and the inner end of the locking screw 240 extends into the radial cylinder 230 and tightly abuts against the fixing rod 300 in the radial cylinder 230 so as to fix the fixing rod 300 and the horizontal rod 200 to each other.

Specifically, after the fixing rods 300 are respectively fixed on the parts of the bone joints (humerus, femur, tibia, pelvis, etc.) where the spiral fracture occurs, which are not generated, the radial cylinders 230 at the two ends of the horizontal rod 200 are respectively sleeved on the fixing rods 300, and then the fixing rods 300 are screwed on the horizontal rod 200 by screwing the locking screws 240, so that the fixed connection between the horizontal rod 200 and the fixing rods 300 is realized, the fixing frame is installed, and the installation foundation and support can be provided for the reset rod 100.

In an embodiment of the present application, as shown in fig. 1 to 5, the horizontal rod 200 may be extended and retracted along the axial direction of the horizontal rod 200 and locked, so that the arrangement is suitable for various use occasions and improves practicality.

Specifically, the specific implementation structure of the horizontal rod 200 that can be extended and retracted and locked along the axial direction of the horizontal rod 200 is as follows:

the horizontal bar 200 includes:

the first rod body 210 is provided with an external thread 211 on the inner end of the first rod body 210;

The second rod 220, the inner end of the second rod 220 has an axial insertion cavity for the inner end of the first rod 210 to insert, and an internal thread is arranged in the insertion cavity;

the inner end of the first rod 210 may be inserted into the axial insertion cavity, and the external thread 211 and the internal thread may be matched to achieve interconnection of a predetermined length, so as to achieve expansion and locking of the horizontal rod 200 along the axial direction of the horizontal rod 200, so that the overall length of the horizontal rod may be adjusted to a certain extent, and the specific installation position of the fixing rod 300 may be adapted and the position of the reset rod 100 may be adjusted.

In an embodiment of the present application, as shown in fig. 1 to 3, a rotating member 150 is connected to an outer wall of the reduction rod 100, a rotating hole penetrating along an axial direction of the horizontal rod 200 is provided on the rotating member 150, the horizontal rod 200 is inserted into the rotating hole, and the rotating hole allows the reduction rod 100 to rotate around the horizontal rod 200, thereby driving the spiral fracture block to rotate and reduce.

In an embodiment of the present application, as shown in fig. 1 to 5, the compass 400 is in a fan shape, the center of the compass 400 is fixedly disposed on the horizontal rod 200 in a penetrating manner, gear blocks 410 are disposed on a surface of the compass 400 facing the reset rod 100 at equal intervals along an arc, the bottom surface of the gear blocks 410 is fixed on the compass 400, the top surface of the gear blocks 410 protrudes out of the compass 400, and the gear blocks 410 have elasticity.

Specifically, the gear block 410 has elasticity, when the reset lever 100 is rotated, the force is larger, the resistance of the gear block 410 can be overcome to continue to rotate, when the reset lever 100 stops rotating, the gear block 410 stops the reset lever 100 from continuing to rotate, so that the reset lever 100 can be temporarily fixed by the gear block 410, and the insertion of the fixing nail is facilitated.

In an embodiment of the present application, as shown in fig. 1 to 3 and fig. 5, the compass 400 is semicircular, and an angle scale 420 is provided on the compass 400 along the circular arc to indicate the rotation angle of the reduction rod 100, thereby indicating the reduction angle of the spiral fracture block, and improving the accuracy of the reduction of the spiral fracture block.

Specifically, the angle scale 420 may provide a user with a marking function, and may precisely adjust the rotation angle of the reset lever 100, for example, in one embodiment, an angle scale 420 is disposed on the compass 400 along the arc at intervals of 2 °.

In one embodiment of the present application, as shown in fig. 1 to 4, the first drill 310 is a pointed end, and a first drilling thread 320 is provided on the fixing rod 300 from the first drill 310 toward the rear end of the fixing rod 300, so as to drill into the bone.

In one embodiment of the present application, as shown in fig. 1 to 5, the second drill bit 110 is a hollow drill bit, and a section of second drilling screw 140 is provided on the reduction rod 100 from the second drill bit 110 to the rear end so as to drill into the spiral fracture block.

An exemplary method for using the screw fracture reduction fixation device according to the embodiment of the present application is as follows:

firstly, respectively cutting a first incision of 5mm at two ends of a fracture position, respectively drilling a fixing rod 300 in the first incision, then adjusting the horizontal rod 200 to a proper length, and respectively and stably connecting two ends of the horizontal rod 200 with the fixing rod 300;

Cutting a second incision of 5mm at the fracture position, drilling the reset rod 100 into a spiral fracture block through the second incision, then holding the handle 120 on the reset rod 100 to rotate the reset rod 100, firstly determining the reset rotation angle on the compass 400 according to the fracture displacement degree, and then rotating the reset rod 100 to a gear block 410 corresponding to the rotation angle clamped on the compass 400 to temporarily fix the reset rod 100;

The C-arm machine perspectives the spiral fracture block, confirms the reset position, and if the reset position is good, a Kirschner wire is placed in the channel 130 in the reset rod 100 or directly screwed into the screw for fixation; if the reset position is not good, the reset lever 100 is continuously rotated to adjust the rotation angle until the reset position is good, and then the kirschner wire is put in or the screw is directly screwed in for fixation.

It will be understood that, although the terms "first," "second," etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments.

The terms of orientation such as external, intermediate, internal, etc. mentioned or possible to be mentioned in this specification are defined with respect to the configurations shown in the drawings, which are relative concepts, and thus may be changed accordingly depending on the different positions and different states of use in which they are located. These and other directional terms should not be construed as limiting terms.

While the utility model has been described with respect to preferred embodiments thereof, it will be understood by those skilled in the art that various modifications and additions may be made without departing from the scope of the utility model. Equivalent embodiments of the present utility model will be apparent to those skilled in the art having the benefit of the teachings disclosed herein, when considered in the light of the foregoing disclosure, and without departing from the spirit and scope of the utility model; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A reduction fixation device for a screw-shaped fracture block, the reduction fixation device comprising:

After the second drill bit of the reset rod drills into the spiral fracture block, the reset rod can rotate around the horizontal rod, so that the spiral fracture block is driven to rotate to reset.

2. A screw-type fracture reduction fixing device according to claim 1, wherein the reduction rod is internally penetrated along the axial direction thereof to form a passage through which a fixing pin for fixing the screw-type fracture block to the bone joint is passed.

3. The device for reducing and fixing the spiral fracture block according to claim 2, wherein the device for reducing and fixing further comprises a compass, the compass is arranged on the fixing frame, and a plurality of fixed gear blocks are arranged on the compass at intervals along the rotation track of the reducing rod;

4. The screw fracture reduction fixing device according to claim 1, wherein the horizontal rod and the fixing rod are connected in the following manner:

5. A screw-type fracture reduction fixation device according to claim 1, wherein the horizontal rod is retractable and lockable in the axial direction of the horizontal rod.

6. The screw-type fracture reduction fixation device of claim 5, wherein the horizontal rod comprises:

the inner end of the first rod body is provided with external threads;

7. The screw-type fracture reduction fixing device according to claim 1, wherein a rotating member is connected to the outer wall of the reduction rod, a rotating hole penetrating in the axial direction of the horizontal rod is formed in the rotating member, the horizontal rod is arranged in the rotating hole in a penetrating mode, and the rotating hole allows the reduction rod to rotate around the horizontal rod.

8. A screw fracture block reduction fixing device according to claim 3, wherein the compass is fan-shaped, the circle center of the compass is fixedly arranged on the horizontal rod in a penetrating manner, gear blocks are arranged on one surface of the compass facing the reduction rod at equal intervals along an arc, the bottom surface of each gear block is fixed on the compass, the top surface of each gear block protrudes out of the compass, and the gear blocks have elasticity.

9. The screw fracture reduction fixation device of claim 8, wherein the compass is semicircular, and angle scales are provided on the compass along the circular arc to indicate the rotation angle of the reduction rod.

10. The screw-type fracture reduction fixing device according to claim 1, wherein the first drill is a pointed head, and a section of first drilling threads is provided on the fixing rod from the first drill to the rear end of the fixing rod so as to drill into bones;