CN214387621U

CN214387621U - Fracture reduction fixator

Info

Publication number: CN214387621U
Application number: CN202023173662.9U
Authority: CN
Inventors: 吴翔
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-10-15
Anticipated expiration: 2030-12-24

Abstract

The utility model provides a fracture reduction fixator, include: the fixing frame is provided with a plurality of groups of main connecting pieces which are respectively used for connecting with a plurality of broken bones; the transition frame is provided with an auxiliary connecting piece, and the auxiliary connecting piece is used for connecting one broken bone; and the adjusting piece is used for adjusting the relative position between the fixed frame and the transition frame. When the transition frame is used, medical staff firstly utilizes the auxiliary connecting piece to connect the transition frame with part of broken bones, then utilizes the main connecting piece to connect the fixing frame with the broken bones which are not connected with the transition frame, then utilizes the adjusting piece to adjust the relative position of the fixing frame and the transition frame to drive each broken bone to move relatively, so that the broken ends of two adjacent broken bones are tightly combined, and finally utilizes the main connecting piece to connect the fixing frame with the rest broken bones. The fractured bone is fixed after being fully reset, and the healing effect of the fractured ulna part is favorably improved.

Description

Fracture reduction fixator

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a fracture reduction fixator.

Background

Olecranal fracture is a common type of elbow trauma in clinical medicine, and this type of fracture accounts for approximately 10% of fractures in the upper extremities. The olecranal fracture often involves the articular surface, and in order to obtain good anatomical reduction and reduce the incidence of traumatic arthritis of the elbow joint caused by fracture, an open reduction operation is required for treatment.

When the olecranon fracture is treated by the incision reduction, the fractured ulna is respectively connected to the fixing devices, and the fixing devices are used for keeping relative fixation, but the healing effect of the fractured part of the ulna is poor.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the healing effect of the fracture of the ulna in the prior art is not good, the utility model aims at providing a fracture reduction fixator.

The utility model provides a following technical scheme:

a fracture reduction fixator comprising:

the fixing frame is provided with a plurality of groups of main connecting pieces, and the main connecting pieces are respectively used for connecting with a plurality of broken bones;

the transition frame is provided with an auxiliary connecting piece, and the auxiliary connecting piece is used for connecting one broken bone; and

and the adjusting piece is used for adjusting the relative position between the fixed frame and the transition frame.

As a further optional scheme for the fracture reduction fixator, the fixator comprises an elongated body, a cantilever is arranged on the body, and at least one group of main connecting pieces are located on the cantilever and used for being connected with the olecranon.

As a further alternative to the fracture reduction fixator, the main connecting member on the cantilever includes a first connecting member and a second connecting member, and the first connecting member and the second connecting member are used to be connected with the olecranon in sequence.

As a further optional scheme for the fracture reduction fixator, at least two first connecting pieces and at least two second connecting pieces are arranged, first mounting holes corresponding to the first connecting pieces are formed in the cantilever, and the first connecting pieces and the second connecting pieces are detachably connected with the inner walls of the first mounting holes.

As a further alternative to the fracture reduction fixator, the first connector is a k-wire.

As a further optional scheme for the fracture reduction fixator, a first reaming guide is arranged on the cantilever, the first reaming guide is detachably connected with the cantilever, and the first reaming guide is sleeved on the first connecting piece.

As a further optional scheme for the fracture reduction fixator, the cantilever is located at one end of the body, the transition frame is located at the other end of the body, and the adjusting piece enables the transition frame to be close to the fixing frame.

As a further alternative to the fracture reduction fixator, the adjustment member comprises:

the screw rod is arranged along the length direction of the body, the screw rod is connected with the body, and the screw rod is arranged on the transition frame in a penetrating mode; and

the nut is in threaded fit with the screw, and the nut is abutted against one side, back to the body, of the transition frame.

As a further alternative to the fracture reduction fixator, the secondary connectors are locking screws.

As a further optional scheme for the fracture reduction fixator, the fixing frame and the transition frame are both provided with second reaming guides, and the fixing frame and the transition frame are detachably connected with the second reaming guides.

The embodiment of the utility model has the following beneficial effect:

when the transition frame is used, medical staff firstly utilizes the auxiliary connecting piece to connect the transition frame with part of broken bones, then utilizes the main connecting piece to connect the fixing frame with the broken bones which are not connected with the transition frame, then utilizes the adjusting piece to adjust the relative position of the fixing frame and the transition frame to drive each broken bone to move relatively, so that the broken ends of two adjacent broken bones are tightly combined, and finally utilizes the main connecting piece to connect the fixing frame with the rest broken bones. The fractured bone is fixed after being fully reset, and the healing effect of the fractured ulna part is favorably improved.

In order to make the aforementioned and other objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view showing the overall structure of a fracture reduction fixator provided in embodiment 1 of the present invention;

fig. 2 is a schematic structural view of a fracture reduction fixator provided in embodiment 2 of the present invention at an initial reduction stage;

fig. 3 is a schematic structural view of the fracture reduction fixator provided in embodiment 2 of the present invention in a complete reduction stage;

fig. 4 is a schematic structural view of a fracture reduction fixator provided in embodiment 2 of the present invention when a first connecting member is replaced;

fig. 5 is a schematic structural view of the fracture reduction fixator provided in embodiment 2 of the present invention after completion of the operation.

Description of the main element symbols:

1-a fixed mount; 11-a primary connection; 111-a first connector; 112-a second connector; 12-a body; 121-a second mounting hole; 122-a second reaming guide; 13-a cantilever; 131-a first mounting hole; 132-a first reaming guide; 2-a transition frame; 21-secondary connection; 22-a third mounting hole; 3-an adjusting part; 31-a screw; 32-nut.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the templates herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Example 1

Referring to fig. 1, the present embodiment provides a fracture reduction fixator for reducing and fixing an ulna during the treatment of an olecranal fracture, so as to promote the healing of the fracture of the ulna. The fracture reduction fixator comprises a fixing frame 1, a transition frame 2 and an adjusting piece 3. Two groups of main connecting pieces 11 are arranged on the fixing frame 1, and the two groups of main connecting pieces 11 are respectively connected with two broken bones. The transition frame 2 is provided with an auxiliary connecting piece 21, and the auxiliary connecting piece 21 is connected with one broken bone. The adjusting piece 3 adjusts the relative position between the fixed frame 1 and the transition frame 2.

When in use, medical staff firstly uses the auxiliary connecting piece 21 to connect one broken bone to the transition frame 2 and then uses the main connecting piece 11 to connect the other broken bone to the fixing frame 1. Medical personnel adjust the relative position between mount 1 and transition frame 2 through regulating part 3, and then drive two disconnected bones relative movement, make the fracture end inseparable bonding of two disconnected bones. Finally, the medical staff connects the fractured bone to which the transition frame 2 is connected to the fixed frame 1 by using the main connecting member 11, and takes the sub-connecting member 21 off the fractured bone.

In the process, the fractured bone is fully reset and then fixed, so that the healing effect of the fractured ulna is improved.

In other embodiments of the present application, the fracture reduction fixator may also function to reduce and fix fractures of other bones.

In other embodiments of the present application, such fracture reduction fixation devices may also be used to treat multiple fractures.

Specifically, the number of broken bones is recorded as n, the fracture reduction fixator comprises a fixing frame 1 and n-1 transition frames 2, and the adjusting pieces 3 can respectively adjust the relative positions between the transition frames 2 and the fixing frame 1. n-1 transition frames 2 correspond to n-1 broken bones respectively, and the rest broken bones are used as reference bones.

When in use, the reference bone is connected with the fixed frame 1 by the main connector 11, and the broken bone adjacent to the reference bone is connected with the corresponding transition frame 2 by the auxiliary connector 21. And then the relative position between the fixing frame 1 and the transition frame 2 is adjusted by the adjusting piece 3, so that the reference bone and the adjacent broken bone are tightly combined. Finally, the broken bone adjacent to the reference bone is connected to the fixing frame 1 by the main connector 11, and the sub-connector 21 is removed from the broken bone.

At this time, the original reference bone and the adjacent fractured bone together constitute a new reference bone. The above process is repeated until all the fractured bones are tightly combined and connected with the fixing frame 1.

Example 2

Referring to fig. 2 to 5, the present embodiment provides a fracture reduction fixator for reducing and fixing an ulna during the treatment of an olecranal fracture, so as to promote the healing of the fracture of the ulna. The fracture reduction fixator comprises a fixing frame 1, a transition frame 2 and an adjusting piece 3. Wherein, the transition frame 2 is only used in the process of reduction, and the adjustment piece 3 and the fixing frame 1 are matched to ensure that the broken bone is completely reduced so as to improve the healing effect. The fixing frame 1 fixes the two cut bones after the reduction is finished, so that the relative positions of the two cut bones are kept unchanged in the healing process.

For convenience of description, according to the olecranon and the coronal process at both ends of the ulna, the ulna cut into two parts is named as an olecranon segment and a coronal process segment, respectively.

Specifically, the fixing frame 1 is composed of a steel body 12 and a cantilever 13. The body 12 is arranged along the length direction of the ulna, and the length of the body 12 is 6cm, the width is 1.5cm, and the thickness is 0.5 cm. Cantilever 13 perpendicular to body 12 sets up, and cantilever 13 is relative with olecranon, and cantilever 13 one end and body 12 towards one end welded fastening or integrated into one piece of olecranon cooperate body 12 to form L type structure. Further, the length of the cantilever 13 is 3cm, and the width and thickness of the cantilever 13 are respectively equal to those of the body 12.

The end of the body 12 facing away from the olecranon is opposite to the crown segment and is provided with two second mounting holes 121. The second mounting hole 121 is provided in the thickness direction of the body 12, and the inner diameter of the second mounting hole 121 is 3.5 mm. Correspondingly, a group of main connecting pieces 11 is arranged on the body 12 opposite to the crown section, and the number of the main connecting pieces 11 is two, and the two main connecting pieces correspond to the two second mounting holes 121 respectively.

The main connection 11 on the body 12 connects the body 12 to the crown segment after the reduction is completed.

In this embodiment, the main connecting member 11 of the body 12 is a locking screw. The locking screw had a diameter of 3.2mm and was driven into the cortical bone of the coronal process segment.

In order to successfully drive the locking screw into the bone cortex, a hole needs to be enlarged on the coronal process segment. Thus, the body 12 is provided with a second reaming guide 122.

Second reaming guide 122 is a tubular hollow sleeve with an inner diameter of 2.8mm, an outer diameter of 3.2mm and a length of 4 cm.

The second reaming guide 122 is detachably coupled to the inner wall of the second mounting hole 121, and the locking screw is also detachably coupled to the inner wall of the second mounting hole 121.

When the locking bolt is used, the second reaming guide 122 is installed in the second installation hole 121, the second reaming guide 122 is used for reaming the crown section, then the second reaming guide 122 is taken down, the locking bolt is installed in the second installation hole 121, and finally the locking bolt is screwed into the crown section.

Two first mounting holes 131 are formed in the cantilever 13 opposite to the olecranon, the first mounting holes 131 are arranged in the thickness direction of the cantilever 13, and the inner diameter of the first mounting holes is 3.5 mm. Correspondingly, a group of main connecting pieces 11 is arranged on the cantilever 13, the main connecting pieces 11 are composed of first connecting pieces 111 and second connecting pieces 112, and the number of the first connecting pieces 111 and the second connecting pieces 112 is two, and the two first connecting pieces are respectively corresponding to the two first mounting holes 131.

The first connecting piece 111 and the second connecting piece 112 are detachably connected with the inner wall of the first mounting hole 131, and the first connecting piece 111 and the second connecting piece 112 are sequentially mounted on the inner wall of the first mounting hole 131 to connect the cantilever 13 with the olecranon.

Specifically, during the restoration process, the first connector 111 is mounted on the inner wall of the first mounting hole 131 while being connected to the olecranon. After the resetting is completed, the first connecting member 111 is replaced with the second connecting member 112, and the cantilever 13 and the olecranon are fixed by the second connecting member 112.

In the process of resetting, after the cantilever 13 is connected with the olecranon by the first connecting piece 111, the medical staff moves the cantilever 13, and then pulls the whole olecranon segment to reset preliminarily through the first connecting piece 111. Since the first connecting member 111 directly applies force to the olecranon, in order to make the olecranon not easy to be damaged in the process of restoration, the first connecting member 111 is made of a kirschner wire.

Accordingly, after the reduction is completed, in order to stably connect the olecranon to the cantilever 13, it is necessary to ensure sufficient strength and stability of the second connecting member 112. Therefore, the second connector 112 is a locking screw with a diameter of 3.2mm, which is driven into the cortical bone of the olecranon.

The first connecting piece 111 and the second connecting piece 112 share the first mounting hole 131, and are connected with the same position on the cantilever 13 and the same position on the olecranon, so that more trauma to the olecranon is avoided.

Since the first connecting piece 111 and the second connecting piece 112 are both provided with two pieces, the olecranon is always connected with the cantilever 13 in the process of replacing the first connecting piece 111 one by one, and the olecranon segment and the crown segment can be stably kept in the reset state.

Furthermore, considering that the kirschner wire has a diameter of 2.5mm, a long and narrow needle body and insufficient bending resistance, a first reaming guide 132 is further provided between the kirschner wire and the cantilever 13, and the kirschner wire is detachably connected with the inner wall of the first mounting hole 131 through the first reaming guide 132.

First reaming guide 132 is also a tubular hollow sleeve having an inner diameter of 2.8mm, an outer diameter of 3.2mm and a length of 4 cm.

During the use, medical personnel will nail into olecranon with a piece of ke shi needle is perpendicular earlier, then install first reaming director 132 in the first mounting hole 131 that corresponds, cup joint first reaming director 132 on the ke shi needle again. At this time, the cantilever 13 is connected with the olecranon through a kirschner wire, and the medical staff moves the cantilever 13 to further pull the whole olecranon segment to be preliminarily reset.

After the resetting is finished, when the first connecting piece 111 needs to be replaced by the second connecting piece 112, another first reaming guide 132 is installed in the corresponding first installation hole 131, and then another kirschner wire is driven into the olecranal through the first reaming guide 132. At this point, the k-wires can be pulled out one by one, the corresponding first reaming guides 132 removed, and then replaced with locking screws.

After the medical staff pulls the whole olecranon segment to initially reset, the olecranon segment and the crown segment are required to be tightly combined to realize complete reset. In this process, the transition frame 2 and the adjusting part 3 are used.

Specifically, the transition frame 2 is a rectangular parallelepiped, has a length of 2cm, and has a width and a thickness equal to those of the body 12. Furthermore, the transition frame 2 is located at the end of the body 12 facing away from the cantilever arm 13, likewise opposite the crown section.

A third mounting hole 22 is formed in the transition frame 2, and the axis of the third mounting hole 22 points to the crown section. And an auxiliary connecting piece 21 is arranged on the inner wall of the third mounting hole 22, and the auxiliary connecting piece 21 is connected with the crown section.

In this embodiment, the secondary connecting member 21 is a locking screw with a diameter of 3.2mm, which is driven into the cortical bone of the coronal process segment to connect the coronal process segment to the transition frame 2.

Similar to the main connector 11 of the main body 12, the transition frame 2 is also provided with a second reaming guide 122, which is reamed in the coronal section, so that the locking screw can be smoothly driven into the bone cortex.

The second reaming guide 122 is removably attached to the inner wall of the third mounting hole 22 and the locking screw is also removably attached to the inner wall of the third mounting hole 22.

When the locking bolt is used, the second reaming guide 122 is installed in the third installation hole 22, the second reaming guide 122 is used for reaming the crown section, then the second reaming guide 122 is taken down, the locking bolt is installed in the third installation hole 22, and finally the locking bolt is screwed into the crown section.

After the crown process section is connected with the transition frame 2, the medical staff draws the transition frame 2 towards the fixed frame 1 by means of the adjusting piece 3, and then drives the crown process section and the olecranon section to move oppositely until the crown process section and the olecranon section are tightly combined and completely reset.

In particular, the adjustment member 3 comprises two screws 31 and two nuts 32. Wherein, screw rod 31 sets up along the length direction of body 12, and screw rod 31 one end penetrates the terminal surface of body 12 one end dorsad olecranon, through modes such as welding or screw-thread fit and body 12 fixed connection. In addition, two screws 31 also pass through the transition frame 2 and are in sliding fit with the transition frame 2.

The two nuts 32 are respectively sleeved on the two screws 31, and the nuts 32 are abutted against one side of the transition frame 2, which is back to the body 12.

When the olecranon resetting tool is used, the nut 32 is screwed to press the transition frame 2 to the fixing frame 1, so that the crown section and the olecranon section are driven to mutually approach and completely reset.

In other embodiments of the present application, the adjusting member 3 may also be other linear displacement mechanisms, such as an air cylinder, a roller screw, etc.

The operation process of the fracture reduction fixator is as follows:

firstly, a medical staff enters a kirschner wire on the olecranon, then a first reaming guide 132 is arranged in one of the first mounting holes 131 on the cantilever 13, and then the first reaming guide 132 is sleeved on the kirschner wire. The medical staff moves the cantilever 13 to pull the olecranon segment to be reset initially.

The healthcare worker then loads the second reaming guide 122 in the third mounting hole 22 of the transition frame 2, and reams the coronal section with the second reaming guide 122. The medical staff removes the second reaming guide 122 from the third mounting hole 22, replaces it with a locking screw, and screws the locking screw into the cortical bone of the coronal section, connecting the coronal section to the transition frame 2.

Next, the medical staff screws the nut 32 to draw the transition frame 2 toward the fixing frame 1, so that the crown section and the olecranon section are tightly combined and completely reset.

Then, the medical staff inserts another first reaming guide 132 into another first mounting hole 131 of the cantilever 13, and nails another kirschner wire to the olecranon by means of the first reaming guide 132. Medical personnel pack into second reaming director 122 in the second mounting hole 121 on body 12, behind the reaming on the section of the guan ju, take off second reaming director 122 in the second mounting hole 121 to nail into locking screw, be connected the section of the guan ju with body 12.

Next, the medical staff pulls out the k-wires one by one, removes the first reaming guide 132, replaces it with a locking screw, and stably connects the cantilever 13 with the olecranal segment, thereby completing the fixation of the olecranal segment and the coronal process segment.

Finally, the medical staff takes down the locking screw on the transition frame 2 to complete the operation.

The process is convenient and quick, has small wound to the ulna, simple operation, accurate reduction, firm fixation and high fracture healing rate.

In all examples shown and described herein, any particular value should be construed as merely exemplary, and not as a limitation, and thus other examples of example embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The above-described embodiments are merely illustrative of several embodiments of the present invention, which are described in detail and specific, but not intended to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. A fracture reduction fixator, comprising:

2. The fracture reduction fixator of claim 1, wherein the fixator comprises an elongated body with a cantilever arm, and at least one set of said primary connectors are located on the cantilever arm and adapted to connect with the olecranon.

3. The fracture reduction fixator of claim 2, wherein the primary connectors on the cantilevers comprise a first connector and a second connector for connection to the olecranon in sequence.

4. The fracture reduction fixator of claim 3, wherein the first connecting piece and the second connecting piece are at least two, the cantilever is provided with a first mounting hole corresponding to the first connecting piece, and the first connecting piece and the second connecting piece are detachably connected with the inner wall of the first mounting hole.

5. A fracture reduction fixator according to claim 3 wherein the first connector is a k-wire.

6. The fracture reduction fixator of claim 5, wherein the cantilever is provided with a first reaming guide, the first reaming guide is detachably connected with the cantilever, and the first reaming guide is sleeved on the first connecting member.

7. The fracture reduction fixator of claim 2 wherein the cantilever is located at one end of the body and the transition frame is located at the other end of the body, the adjustment member bringing the transition frame closer towards the fixation frame.

8. The fracture reduction fixture of claim 7, wherein the adjustment member comprises:

9. The fracture reduction fixture of claim 1, wherein the secondary connector is a locking screw.

10. The fracture reduction fixator of claim 1, wherein the fixing frame and the transition frame are both provided with second reaming guides, and the fixing frame and the transition frame are both detachably connected with the second reaming guides.