CN201624766U

CN201624766U - Bone setting device

Info

Publication number: CN201624766U
Application number: CN2009202865316U
Authority: CN
Inventors: 杨宁; 李晓林
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-12-29
Filing date: 2009-12-29
Publication date: 2010-11-10
Anticipated expiration: 2019-12-29

Abstract

The utility model discloses a bone setting device, which is provided with at least one screw hole for screwing in screws. Moreover, polyether-ether-ketone (PEEK) is covered on the inner wall of the screw hole. As the PEEK is softer compared with metal materials or composite materials of a traditional bone setting device, the PEEK can be covered on the inner wall of the screw hole without preliminarily arranging a screw channel on the inner wall of the screw hole, and a screw channel can be formed on the surface of a PEEK layer by only directly screwing a screw into the screw hole in use process. As the screw channel formed in the manner is closely attached with threads of the screw, the bone setting device solves the problems that the screw is easy to fall and limited in perpendicular screwing-in, and decreases the possibility of failure of the bone setting device. Moreover, owing to the PEEK layer, stress shielding function for the bone setting device is relieved in fracture healing process, and the possibility of breakage of the bone setting device is decreased, thereby the possibility of failure of the bone setting device is further reduced.

Description

The synthetism device

Technical field

This utility model relates to the medical device field, particularly relates to a kind of synthetism device.

Background technology

At present, the means commonly used of treatment fracture clinically are to utilize synthetism device and screw to carry out internal fixation, yet existing synthetism device failure phenomenon in fracture healing process happens occasionally.The reason that this phenomenon occurs is varied, except the synthetism device, the multiple anthropic factors such as that screw is selected is improper, misoperation, the factor of existing synthetism device self structure is arranged also.

For example, traditional Dynamic Compression Plate (DCP); Limited contact Dynamic Compression Plate (LC-DCP), point type contact inner fixer (PC-FIX), its screw hole place does not have Luo Dao, and sclerotin do not have screw thread, thereby occurs the slip phenomenon of screw easily, causes fixing failure.On this basis, locked pressurized bone plate (LCP) is developed, and its main feature is to unite to have used power pressurization hole and conical threaded holes.Can be used as pressurized bone plate and produce axially pressure, also can be used as the inner fixed support (similar PC-FIX) of locking, and not influence the blood confession, can also use this two kinds of technology simultaneously, both make support, can pressurize again.Yet the scientific and technological content of LCP is higher, has increased the difficulty of surgical procedures, and the doctor who needs rich experiences does, otherwise can run counter to desire.

In addition, use traditional synthetism device, in fracture healing process,, the synthetism device cause its failure phenomenon also to happen occasionally owing to rupturing, this be because: more near fracture site, the stress that the synthetism device is born is big more, therefore at the stress maximum, i.e. and synthetism device central authorities and closely broken ends of fractured bone screw hole place, occur fracture easily, thereby cause the synthetism component failure.

The utility model content

The purpose of this utility model is to provide a kind of synthetism device, to solve problems such as screw easily comes off in existing synthetism device-screw fixed structure, reduces synthetism component failure odds.

For solving above technical problem, this utility model provides a kind of synthetism device, has at least one screw hole on it, in order to the screw-in screw, and is coated with a polyether-ether-ketone layer on the described screw hole inwall.

Further, the thickness of described polyether-ether-ketone layer is more than or equal to the screw thread width.

Further, described synthetism device is a blade plate.

Further, described synthetism device is straight type blade plate or special-shaped blade plate.

Further, described synthetism device is an inner fixer.

In sum, above synthetism device covers one deck polyether-ether-ketone (PEEK) on the screw hole inwall.Because PEEK is comparatively soft with respect to the metal material or the composite of traditional synthetism device, and it is covered on the screw hole inwall, just need not to form Luo Dao in advance on the inwall of screw hole.Only need in use, directly screw is screwed in, can form Luo Dao on the surface of PEEK layer.So Luo Dao and the screw thread that forms fits tightly, and solved the caducous problem of screw, reduced synthetism component failure odds.And, because the existence of PEEK layer, and the PEEK material elastic modelling quantity similar to cortical bone, alleviated the stress force shelter reaction of synthetism device in the fracture healing process, and can produce fine motion, thereby reduced the probability of synthetism device fracture, and then further reduced synthetism component failure odds.In addition, use above synthetism device to need not on the screw hole of bone fracture device, to form Luo Dao in advance, the doctor is when screwing in screw, just can not be subjected to the vertical restriction that screws in of Luo Dao, reduced operating difficulty, make simple to operately, reduced the generation of doctor's operation mistake, further reduced synthetism component failure odds.

Description of drawings

The structural representation of the synthetism device that Fig. 1 is provided for this utility model one embodiment;

Fig. 2 is the profile of a kind of straight type blade plate provided by the utility model;

Fig. 3 is the profile of a kind of special-shaped blade plate provided by the utility model;

Fig. 4 is the profile of a kind of miniature blade plate provided by the utility model;

Fig. 5 is the profile of a kind of inner fixer provided by the utility model.

The specific embodiment

For technical characterictic of the present utility model is become apparent, below in conjunction with accompanying drawing, provide specific embodiment, this utility model is further described.

Please refer to Fig. 1, the structural representation of the synthetism device that it is provided for this utility model one embodiment.As shown in the figure, have at least one screw hole 12 on this synthetism device 10,, and be coated with polyether-ether-ketone (PEEK) layer 14 on screw hole 12 inwalls in order to the screw-in screw.

PEEK is comparatively soft with respect to the metal material or the composite of traditional synthetism device, and it is covered on screw hole 12 inwalls, just need not to form Luo Dao in advance on the inwall of screw hole 12.Only need in use, directly screw is screwed in, can form Luo Dao on the surface of PEEK layer 14.So Luo Dao and the screw thread that forms fits tightly, and solved the caducous problem of screw, reduced synthetism component failure odds.And, because the existence of PEEK layer 14, and the PEEK material elastic modelling quantity similar to cortical bone, alleviated the stress force shelter reaction of synthetism device in the fracture healing process, and can produce fine motion, thereby reduced the probability of synthetism device fracture, and then further reduced synthetism component failure odds.In addition, use above synthetism device to need not on the screw hole 12 of bone fracture device, to form Luo Dao in advance, the doctor is when screwing in screw, just can not be subjected to the vertical restriction that screws in of Luo Dao, reduced operating difficulty, make simple to operately, reduced the generation of doctor's operation mistake, further reduced synthetism component failure odds.

Preferable, the thickness of PEEK layer 14 is more than or equal to the width of screw thread, and like this, the screw thread of screw just can agree with PEEK layer 14 to greatest extent, thus more firm synthetism device 10 is fixed on the knochenbruch.

The synthetism device of above embodiment is not limited to its shape and type, and concrete as following examples, this synthetism device can be blade plate and inner fixer etc.

As shown in Figure 2, it is the profile of a kind of straight type blade plate provided by the utility model.This straight type blade plate 30 for example is limited contact steel plate, is coated with polyether-ether-ketone (PEEK) layer 34 on its screw hole 32 inwalls.

As shown in Figure 3, it is the profile of a kind of special-shaped blade plate provided by the utility model.This abnormal shape blade plate 40 for example is the proximal humerus steel plate, is coated with polyether-ether-ketone (PEEK) layer 44 on its screw hole 42 inwalls.

As shown in Figure 4, it is the profile of a kind of miniature blade plate provided by the utility model.This miniature blade plate 50 for example is the phalanges steel plate in the present embodiment, is coated with polyether-ether-ketone (PEEK) layer 54 on its screw hole 52 inwalls.

As shown in Figure 5, it is the structural representation of a kind of inner fixer provided by the utility model.This holder 60 for example is a pitman, is coated with polyether-ether-ketone (PEEK) layer 64 on its screw hole 62 inwalls.

In sum, above synthetism device covers one deck PEEK on the screw hole inwall.Because PEEK is comparatively soft with respect to the metal material or the composite of traditional synthetism device, and it is covered on the screw hole inwall, just need not to form Luo Dao in advance on the inwall of screw hole.Only need in use, directly screw is screwed in, can form Luo Dao on the surface of PEEK layer.So Luo Dao and the screw thread that forms fits tightly, and solved the caducous problem of screw, reduced synthetism component failure odds.And, because the existence of PEEK layer, and the PEEK material elastic modelling quantity similar to cortical bone, alleviated the stress force shelter reaction of synthetism device in the fracture healing process, and can produce fine motion, thereby reduced the probability of synthetism device fracture, and then further reduced synthetism component failure odds.In addition, use above synthetism device to need not on the screw hole of bone fracture device, to form Luo Dao in advance, the doctor is when screwing in screw, just can not be subjected to the vertical restriction that screws in of Luo Dao, reduced operating difficulty, make simple to operately, reduced the generation of doctor's operation mistake, further reduced synthetism component failure odds.

Though this utility model discloses as above with preferred embodiment; right its is not in order to limit this utility model; have in the technical field under any and know the knowledgeable usually; in not breaking away from spirit and scope of the present utility model; when doing a little change and retouching, therefore protection domain of the present utility model is as the criterion when looking claims person of defining.

Claims

1. a synthetism device has at least one screw hole on it, in order to screw in screw, it is characterized in that, is coated with a polyether-ether-ketone layer on the described screw hole inwall.

2. synthetism device according to claim 1 is characterized in that the thickness of described polyether-ether-ketone layer is more than or equal to the screw thread width.

3. synthetism device according to claim 1 is characterized in that, described synthetism device is a blade plate.

4. synthetism device according to claim 3 is characterized in that, described synthetism device is straight type blade plate or special-shaped blade plate.

5. synthetism device according to claim 1 is characterized in that, described synthetism device is an inner fixer.