阅读说明：本技术 一种胫骨近端髓腔处理装置 (Proximal tibia medullary cavity treatment device ) 是由 王东林 于 2020-04-27 设计创作，主要内容包括：本发明提供一种胫骨近端髓腔处理装置,包括骨刀、导向套和胫骨平台基板,所述骨刀包括本体和手柄,所述本体上开设有延伸到顶端的第一凹槽,所述手柄的一端转动连接在所述第一凹槽中；所述导向套的底部安装在所述胫骨平台基板上,所述导向套内设有骨刀导向通槽,所述骨刀的本体可在所述骨刀导向通槽内滑动,所述导向套上开设有与所述第一凹槽相对应的第二凹槽,所述手柄可卡在所述第二凹槽内。上述方案,所述胫骨近端髓腔处理装置在使用过程中不再需要拔出工具的配合,可利用自带的手柄将骨刀打入髓腔,并且可以通过转动手柄,利用杠杆原理将骨刀从髓腔中拔出,简化了手术步骤,方便医生操作,同时有效地缩短了胫骨近端髓腔的处理时间。(The invention provides a proximal tibial medullary cavity treatment device which comprises a osteotome, a guide sleeve and a tibial plateau substrate, wherein the osteotome comprises a body and a handle, the body is provided with a first groove extending to the top end, and one end of the handle is rotatably connected in the first groove; the bottom of the guide sleeve is mounted on the tibial platform base plate, a osteotome guide through groove is formed in the guide sleeve, the osteotome body can slide in the osteotome guide through groove, a second groove corresponding to the first groove is formed in the guide sleeve, and the handle can be clamped in the second groove. According to the scheme, the proximal tibia medullary cavity processing device does not need to be matched with a pulling tool in the using process, the osteotome can be driven into the medullary cavity by using the handle, and the osteotome can be pulled out of the medullary cavity by rotating the handle and utilizing the lever principle, so that the operation steps are simplified, the operation of a doctor is facilitated, and meanwhile, the processing time of the proximal tibia medullary cavity is effectively shortened.)

1. A proximal tibial medullary cavity processing device is characterized by comprising a osteotome, a guide sleeve and a tibial plateau base plate;

the osteotome comprises a body and a handle, wherein the body is provided with a first groove extending to the top end, one end of the handle is rotatably connected in the first groove, and the handle can rotate outwards from the inside of the first groove;

the bottom of the guide sleeve is mounted on the tibial platform base plate, a osteotome guide through groove is formed in the guide sleeve, the osteotome body slides in the osteotome guide through groove, a second groove corresponding to the first groove is formed in the guide sleeve, and the handle can be clamped in the second groove.

2. The proximal tibial medullary cavity processing device of claim 1, wherein one end of the handle is provided with a slider adapted to the first groove, and the slider is provided with an oblong hole for hinging with the body through a pin; the other end of the handle is provided with a knocking head.

3. The proximal tibial medullary cavity processing device of claim 2, wherein the osteotome further comprises a limiting structure, the limiting structure comprises a limiting groove and a limiting protrusion, the top of the body is provided with a boss, the upper end surface of the boss is provided with a limiting groove communicated with the first groove, and one end of the slider, which is far away from the oblong hole, is provided with a limiting protrusion which can be clamped in the limiting groove.

4. The proximal tibial medullary cavity treatment device of claim 1, wherein wings are provided on both sides of the body, and the first recess is provided on a side of the body between the two wings.

5. The proximal tibial medullary cavity treatment device of claim 1, wherein the guide sleeve has a first fixation portion and a second fixation portion on opposite sides of a bottom portion;

a guide sleeve positioning through groove and a wing groove communicated with the guide sleeve positioning through groove are formed in the center of the tibial platform base plate;

the first fixing part and the second fixing part are inserted into the guide sleeve positioning through groove, the bottom end face of the guide sleeve is clamped on the top end face of the tibial platform base plate, and the wing part groove is communicated with the osteotome guiding through groove.

6. The proximal tibial medullary cavity treatment device of claim 1, wherein the osteotome guiding channel in the guide sleeve is shaped to fit the body of the osteotome; the second groove corresponds to the first groove in position and is equal in width.

7. The proximal tibial medullary cavity processing device of claim 1, wherein the tibial plateau baseplate is formed with a mounting hole for mounting a fixation nail.

8. The proximal tibial medullary cavity treatment device of claim 4, wherein the wing has a cutting edge and a plurality of vertical grooves on the surface of the wing.

9. The proximal tibial medullary cavity treatment device of any one of claims 1-8, wherein the proximal tibial medullary cavity treatment device is made of 0Cr17Ni4Cu4 Nb.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a proximal tibial medullary cavity treatment device.

Background

At present, in the primary operation of knee joint, the proximal medullary cavity of tibia is treated by connecting a special handle with a osteotome, driving the osteotome into the medullary cavity by knocking the end of the special handle, then connecting the osteotome with a special sliding hammer, and pulling the osteotome out of the medullary cavity by the special sliding hammer. In the whole operation process, the osteotome is required to be connected with an auxiliary tool, work cannot be completed independently, the operation process steps are complex, the operation process is complex, the operation time is too long, and the operation completion effect is influenced.

Disclosure of Invention

The invention aims to provide a proximal tibia medullary cavity treatment device, and aims to solve the problems that the conventional osteotome cannot independently complete work in the proximal tibia medullary cavity treatment operation process, needs to be assembled with other auxiliary tools for use, is complex in operation, and causes complex operation steps.

In order to solve the technical problems, the invention provides the following technical scheme:

a proximal tibial medullary cavity treatment device comprises a osteotome, a guide sleeve and a tibial plateau base plate; the osteotome comprises a body and a handle, wherein the body is provided with a first groove extending to the top end, one end of the handle is rotatably connected in the first groove, and the handle can rotate outwards from the inside of the first groove; the bottom of the guide sleeve is mounted on the tibial platform base plate, a osteotome guide through groove is formed in the guide sleeve, the osteotome body slides in the osteotome guide through groove, a second groove corresponding to the first groove is formed in the guide sleeve, and the handle can be clamped in the second groove.

One end of the handle is provided with a sliding block matched with the first groove, and the sliding block is provided with a long circular hole so as to be hinged with the body through a pin shaft; the other end of the handle is provided with a knocking head.

The osteotome further comprises a limiting structure, the limiting structure comprises a limiting groove and a limiting bulge, a boss is arranged at the top of the body, the limiting groove communicated with the first groove is formed in the upper end face of the boss, and the limiting bulge capable of being clamped and fixed in the limiting groove is arranged at one end, far away from the oblong hole, of the slider.

Wherein, both sides of body are equipped with the alar part, first recess sets up on the side between two alar parts of body.

The opposite sides of the bottom of the guide sleeve are provided with a first fixing part and a second fixing part; a guide sleeve positioning through groove and a wing groove communicated with the guide sleeve positioning through groove are formed in the center of the tibial platform base plate; the first fixing part and the second fixing part are inserted into the guide sleeve positioning through groove, the bottom end face of the guide sleeve is clamped on the top end face of the tibial platform base plate, and the wing part groove is communicated with the osteotome guiding through groove.

The osteotome guiding through groove in the guiding sleeve is matched with the osteotome body in shape; the second groove corresponds to the first groove in position and is equal in width.

Wherein, the tibial plateau base plate is provided with a mounting hole for mounting a fixing nail.

The wing part is provided with a cutting edge, and the surface of the wing part is provided with a plurality of vertical grooves.

Preferably, the proximal tibial medullary cavity treatment device is made of 0Cr17Ni4Cu4 Nb.

The technical scheme of the invention has the following beneficial effects:

in the scheme, the proximal tibia medullary cavity processing device can independently complete the operation of driving and extracting the osteotome, does not need other auxiliary tools, can drive the osteotome into the medullary cavity by using the handle, can extract the osteotome from the medullary cavity by rotating the handle and utilizing the lever principle, simplifies the operation steps, facilitates the operation of doctors, and effectively shortens the processing time of the proximal tibia medullary cavity.

Drawings

FIG. 1 is a schematic structural view of a proximal tibial medullary cavity treatment device of the present invention;

FIG. 2 is a schematic structural view of a osteotome of the proximal tibial medullary cavity treatment device of the present invention;

FIG. 3 is a schematic structural view of a guide sleeve of the proximal tibial medullary cavity treatment device of the present invention;

FIG. 4 is a schematic view of the tibial plateau baseplate of the proximal tibial medullary cavity treatment device of the present invention;

FIG. 5 is a first view of the proximal medullary cavity of tibia illustrating the first usage of the present invention;

fig. 6 is a second usage state diagram of the proximal tibial medullary cavity processing device of the present invention.

[ reference numerals ]

1. A body;

2. a handle;

3. a guide sleeve;

4. a tibial plateau baseplate;

5. a slider;

6. a knocking head;

7. a boss;

8. a limiting bulge;

9. a wing portion;

10. a first fixed part;

11. a second fixed part;

12. a third fixed part;

13. a fourth fixing part.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 6, an embodiment of the present invention provides a proximal tibial medullary cavity processing device, which includes a osteotome, a guiding sleeve 3 and a tibial plateau substrate 4, wherein the osteotome includes a body 1 and a handle 2, the body 1 is provided with a first groove extending to a top end, one end of the handle 2 is rotatably connected to the first groove, and the handle 2 can rotate from the first groove to the outside; the bottom of uide bushing 3 is installed on tibial plateau base plate 4, is equipped with the logical groove of osteotome direction in the uide bushing 3, and the body 1 of osteotome is in the logical groove of osteotome direction slides, has seted up the second recess corresponding with first recess on the uide bushing 3, and handle 2 can block in the second recess.

As shown in fig. 2, one end of the handle 2 is provided with a sliding block 5 matched with the first groove, the sliding block 5 is flat, the sliding block 5 is provided with an oblong hole along the axial direction, and a pin shaft penetrates through the oblong hole and is fixed with the body on two sides of the first groove; the other end of the handle 2 is provided with a knocking head 6.

In this embodiment, the osteotome further includes limit structure, it is concrete, body 1 top is equipped with boss 7 to squeeze into the position in pulp cavity to the osteotome and carry on spacingly, boss 7's up end is equipped with the spacing recess with first recess intercommunication, the one end department of keeping away from the oblong hole on the slider 5 is equipped with the spacing arch 8 that can block admittedly in the spacing recess, when beating the handle, spacing arch 8 blocks admittedly in the spacing recess, limit structure can be used to transmit the power between handle 2 and the body 1, prevent that the round pin axle atress from breaking.

As shown in fig. 1 and 2, wing portions 9 are disposed on two sides of the body 1, the wing portions 9 are streamlined and gradually narrow from top to bottom, the wing portions 9 are provided with cutting edges, a plurality of vertical grooves are disposed on the surfaces of the wing portions 9, and the first groove is disposed on the side surface between the two wing portions 9 of the body 1 and located on the central axis.

As shown in fig. 3, the opposite sides of the bottom of the guide sleeve 3 are respectively provided with a first fixing part 10 and a second fixing part 11 which are protruded downwards, and as shown in fig. 4, the center of the tibial plateau baseplate 4 is provided with a guide sleeve positioning through groove and a wing part groove communicated with the guide sleeve positioning through groove; when the first fixing part 10 and the second fixing part 11 are inserted into the guide sleeve positioning through groove, the bottom end face of the guide sleeve 3 is clamped on the top end face of the tibial platform base plate 4, and the wing part groove is communicated with the osteotome guiding through groove. The periphery of the guide sleeve positioning through groove is provided with a third fixing part 12 corresponding to the first fixing part 10 and a fourth fixing part 13 corresponding to the second fixing part 11, the third fixing part 12 and the fourth fixing part 13 are upwards protruded to form a semi-surrounding structure, when the first fixing part 10 and the second fixing part 11 are inserted into the guide sleeve positioning through groove, the first fixing part 10 is clamped and fixed on the inner side of the third fixing part 12, and the second fixing part 11 is clamped and fixed on the inner side of the fourth fixing part 13, so that the stability of connection of the guide sleeve 3 and the tibial platform substrate 4 is enhanced.

As shown in fig. 1, the osteotome guiding through slot in the guiding sleeve 3 is adapted to the shape of the osteotome body 1, and the second groove is corresponding to the first groove in position and has the same width.

As shown in fig. 4, a mounting hole for mounting a fixing nail is formed on the tibial plateau base plate 4, and the tibial plateau base plate 4 is connected with the tibia through the fixing nail.

In this embodiment, the proximal medullary cavity of tibia is made of 0Cr17Ni4Cu4 Nb.

The proximal tibia medullary cavity processing device provided by the invention has the following working process:

fixing a tibial plateau substrate 4 on a tibia, installing a guide sleeve 3 on the tibial plateau substrate 4, as shown in fig. 5, vertically erecting a handle 2 of a osteotome, inserting the handle into an inner cavity of the guide sleeve 3, knocking a knocking head 6 of the handle 2 through a hammer, enabling the osteotome to slide along a osteotome guide through groove, and driving the osteotome into a medullary cavity until a boss 7 is clamped at the top end of the guide sleeve 3; after finishing, the handle 2 is lifted upwards and rotated downwards along the first groove and the second groove, and as shown in fig. 6, the osteotome is pried out by using the root of the second groove as a fulcrum and utilizing the lever principle.

According to the scheme, the proximal tibia medullary cavity treatment device does not need to be matched with a pulling tool in the using process, the osteotome can be driven into the medullary cavity by using the handle, and meanwhile, the osteotome can be pulled out of the medullary cavity by rotating the handle and utilizing the lever principle, so that the operation steps are simplified, the operation of a doctor is facilitated, and meanwhile, the treatment time of the proximal tibia medullary cavity is effectively shortened; the proximal tibia medullary cavity treatment device is provided with a limiting structure and a plurality of clamping and fixing connections, and is reliable in structure, convenient to detach and convenient to use.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.