CN214966281U

CN214966281U - Knee joint cuts bone lockplate

Info

Publication number: CN214966281U
Application number: CN202121152492.8U
Authority: CN
Inventors: 及松洁; 张佳洋; 史春宝; 郭静; 王振国
Original assignee: Beijing Chunlizhengda Medical Instruments Co Ltd
Current assignee: Beijing Chunlizhengda Medical Instruments Co Ltd
Priority date: 2021-05-26
Filing date: 2021-05-26
Publication date: 2021-12-03
Anticipated expiration: 2031-05-26

Abstract

The utility model provides a knee joint cuts bone lockplate, include: the longitudinal section structure is the mainboard of T type, from last to having seted up a universal hole, the combination hole of one "8" style of calligraphy, three not continuous and dislocation set's a locking hole on vertical direction in proper order down on the long limit of mainboard. The advantages are that: the position and the function of each hole in the utility model are designed, so that the structure is more in line with the bone parameters of the human body in China during the use process, no foreign body sensation exists after the operation, and the knee joint pain caused by the size problem of the bone plate can be avoided; the strength of the dry part of the bone fracture plate is increased; the probability of plate breakage is reduced; and uses gimbaled holes to accommodate more osteotomy situations.

Description

Knee joint cuts bone lockplate

Technical Field

The utility model belongs to the technical field of the medical instrument technique and specifically relates to a knee joint cuts bone lockplate.

Background

The ToMoFix knee osteotomy system is a set of osteotomy fixation system designed based on a locking compression steel plate system (LCP), and the steel plate has strong angle stability so as to obtain stable internal fixation, thereby accelerating the rapid bone healing of osteotomy.

When the locking bone screw is used, the conical double-line threads at the head of the locking screw are required to be connected with the locking hole of the bone plate, and the pure titanium and titanium alloy materials used at present have the probability of cold welding with the bone plate (namely, the metals are adhered at normal temperature and are welded together). Furthermore, most of the bone fracture plates used at present are not permanently implanted into a human body, the human body needs to be taken out after the bone is healed, the bone fracture plates can be repaired when the bone fracture plates are subjected to nail breakage and plate breakage, the difficulty in operation is increased if cold welding is generated, the bone fracture plates are not easy to take out, the operation time is prolonged, pain is brought to patients, and even doctor-patient contradiction can be caused.

For the metal implant, after the metal implant is implanted into a human body, under the corrosion action of human body fluid, metal ions are easily released to enter the human body, and have certain toxic action on the human body.

The ToMoFix knee joint osteotomy system is developed according to the physiological structure of European and American patients, the physiological structures of the Chinese and European and American patients are different to a certain extent, and the head size of the ToMoFix knee joint osteotomy system is large, foreign body sensation is generated after the operation of the Chinese, and two wings of the head cannot be well attached to bones, so that the knee joint of the patient is continuously painful due to the fact that the Chinese has a small body size and the knee joint pain continues to occur after the operation.

SUMMERY OF THE UTILITY MODEL

The utility model provides a knee joint cuts bone lockplate, the purpose is overcome above-mentioned a technical defect at least, reduces design and process cost, the accurate installation of being convenient for.

In order to realize the purpose of the utility model, the utility model provides a following technical scheme:

a knee osteotomy locking plate comprising: the longitudinal section structure is the mainboard of T type, from last to having seted up a universal hole, the combination hole of one "8" style of calligraphy, three not continuous and dislocation set's a locking hole on vertical direction in proper order down on the long limit of mainboard.

Preferably, the locking device further comprises three second locking holes which are arranged on the short sides of the main plate in a linear shape at intervals.

Preferably, the material of the main board is carbon fiber PEEK material.

Preferably, the insertion end of the long edge of the main board is of a gradually-thinned and smooth structure, and the insertion end is the end deviating from the upper short edge of the main board.

Preferably, the first locking hole is a tapered double-thread.

Preferably, the second locking hole is a tapered double-thread.

Preferably, the long side of the main plate comprises a bending section and an upright section, and an included angle between the upright section and the bending section is an acute angle.

Preferably, the universal hole is arranged on the bending section, and the combination hole and the first locking hole are arranged on the upright section.

The utility model discloses a knee joint cuts bone lockplate, its advantage is:

1. the structure of the utility model is made of carbon fiber PEEK material, which can be organically combined with the organism, and the mechanical property, chemical corrosion resistance, radiation resistance and high temperature resistance of the carbon fiber reinforced PEEK are further improved; secondly, cold welding can be avoided from the source, and the carbon fiber reinforced PEEK material is an ideal insulator and cannot generate electrolytic reaction with other ions in human tissue fluid; and according to the characteristics of the carbon fiber reinforced PEEK material, the strength of the carbon fiber reinforced PEEK material is completely comparable to that of titanium alloy, the carbon fiber reinforced PEEK material is easy to process, the processing cost of enterprises is saved, and the carbon fiber reinforced PEEK material is beneficial to the implementation of the environment-friendly work of the enterprises.

2. The position and the function of each hole in the utility model are designed, so that the structure is more in line with the bone parameters of the human body in China during the use process, no foreign body sensation exists after the operation, and the knee joint pain caused by the size problem of the bone plate can be avoided;

3. the structure and the position of each hole in the utility model are designed to further increase the strength of the cadre of the bone fracture plate and reduce the probability of plate breakage; and uses gimbaled holes to accommodate more osteotomy situations.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a schematic perspective view of a knee osteotomy locking plate of the present invention;

fig. 2 is a schematic side structure view of the knee osteotomy locking plate of the present invention;

wherein:

the device comprises a main board 1, an insertion end 11, a bending section 12 and an upright section 13;

universal hole 2, combination hole 3, No. one locking hole 4, No. two locking holes 5.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

In order to laminate our country's human body curve more to the travelling comfort after the reinforcing is used stops the emergence of the cold welding condition, it is shown according to fig. 1, fig. 2, the utility model relates to a knee joint cuts bone lockplate, include: the main board 1 with the T-shaped longitudinal section is sequentially provided with a universal hole 2, an 8-shaped combination hole 3 and three first locking holes 4 which are not connected in the vertical direction and are arranged in a staggered manner from top to bottom on the long edge of the main board 1;

more specifically, the main board 1 is made of carbon fiber PEEK material; in order to facilitate better insertion during surgery, the insertion end 11 of the long side of the main board 1 is of a tapered and smooth structure, and the insertion end 11 is the end departing from the short side of the main board 1;

in the specific application, for the stability of locking, still include three No. two locking holes 5 that set up on mainboard 1 short side at the interval of "a" style of calligraphy.

In a further specific application, in order to provide better angular stability, the first locking hole 4 and the second locking hole 5 are both tapered double-thread.

In order to generate elastic prestress in use, the long side of the main board 1 comprises a bent section 12 and an upright section 13, and an included angle between the upright section 13 and the bent section 12 is an acute angle; in order to pressurize by using a lag screw in an operation and simultaneously ensure that the stress is uniformly dispersed to the long edge of the main board 1, the universal hole 2 is arranged on the bending section 12, and the combination hole 3 and the first locking hole 4 are arranged on the vertical section 13.

The utility model discloses a realize like this:

before operation, the force line is planned, and the orthopedic angle is determined. The bone is cut earlier during the operation, cuts the bone district after dying and struts the orthopedic angle of planning before reaching, then the wicresoft inserts the utility model discloses a cut bone lockplate, cut bone lockplate head three before inserting twist drill bit director in No. two locking holes 5, and universal hole 2 with be located install the locking gasket respectively in inserting a locking hole 4 of 11 one sides of end, lie in after inserting 1 middle on the minor face of mainboard No. two locking holes 5 insert a piece of kirschner wire and carry out interim fixed. A screw hole is drilled by using a 4.3mm lcp drill, and screws are sequentially implanted into two of the second locking holes 5 on the left and right sides of the short side of the main plate 1 and locked by using a torque-limiting wrench of 4.0N · m. Then the kirschner wire in the middle second locking hole 5 is taken out, the locking screw is implanted and the fixation is carried out.

A temporary lag screw is implanted in a neutral position in the power hole in the combination hole 3, a screw hole is drilled by using a universal drill guide, the angle slightly faces to the far end, the leg of the patient is straightened, and a self-tapping cortical bone screw is implanted. And (3) implanting and screwing locking bone screws in the other two first locking holes 4 at a time, removing the locking gasket in the first locking hole 4 close to the insertion end 11 on the long edge of the main plate 1, implanting and screwing the locking screws. And taking out the tension screw in the combination hole 3, implanting a locking screw and screwing. And (4) taking out the locking gasket in the universal hole 2, implanting a locking screw and screwing. And detecting the position of the implant, closing the incision and finishing the operation.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A knee joint cuts bone lockplate which characterized in that: the main board (1) with the T-shaped longitudinal section is constructed, a universal hole (2), a combination hole (3) shaped like an 8 character and three locking holes (4) which are not connected in the vertical direction and are arranged in a staggered manner are sequentially formed in the long edge of the main board (1) from top to bottom.

2. A locking plate for knee osteotomy according to claim 1, wherein: and three second locking holes (5) which are arranged on the short side of the main board (1) in a linear shape at intervals.

3. A locking plate for knee osteotomy according to claim 1, wherein: the main board (1) is made of carbon fiber PEEK material.

4. A locking plate for knee osteotomy according to claim 1, wherein: the long edge of the mainboard (1) is inserted the end (11) and is gradually thinned, smooth structure, insert the end (11) for deviating from the one end of minor face on mainboard (1).

5. A locking plate for knee osteotomy according to claim 1, wherein: the first locking hole (4) is a tapered double-thread.

6. A locking plate for knee osteotomy according to claim 2, wherein: the second locking hole (5) is a tapered double-thread.

7. A locking plate for knee osteotomy according to claim 1, wherein: the long side of mainboard (1) includes crooked section (12), upright section (13) with contained angle between crooked section (12) is the acute angle.

8. The locking plate for osteotomy of a knee joint as claimed in claim 7, wherein: the universal hole (2) is arranged on the bending section (12), the combination hole (3) and the first locking hole (4) are arranged on the vertical section (13).