CN210494176U

CN210494176U - Intercondylar osteotomy drill

Info

Publication number: CN210494176U
Application number: CN201920800324.1U
Authority: CN
Inventors: 柴伟
Original assignee: Chinese PLA General Hospital
Current assignee: Chinese PLA General Hospital
Priority date: 2019-05-30
Filing date: 2019-05-30
Publication date: 2020-05-12
Anticipated expiration: 2029-05-30

Abstract

The utility model discloses an intercondylar osteotomy drill, which comprises a driving end, a tool bit and a guide part, wherein the driving end is detachably connected with the tool bit into a whole through a connecting device, and the tool bit is guided to a bone to be osteotomy through the guide part; the connecting device is in flexible connection, one end of the connecting device is connected to the driving end, and the other end of the connecting device is connected to the cutter head. The utility model provides a pair of osteotomy bores between condyle, its is rational in infrastructure, has effectively improved osteotomy efficiency, has shortened the operation time, has solved traditional artifical knee joint total knee replacement operation in, complex operation needs often to change reciprocating saw and pendulum saw, extension operation time, causes the high problem of operation risk.

Description

Intercondylar osteotomy drill

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to an intercondylar cuts bone drill.

Background

The artificial knee joint replacement is a new technology for treating knee joint diseases, which is developed gradually after the modern artificial hip joint is successfully applied to patients, can effectively eradicate late-stage knee joint pain, greatly improves the life quality of the patients, is popular in developed countries, is a practical and effective method for treating serious knee joint diseases, but needs to pay attention to selection of adaptation diseases, correction of joint varus and flexion deformity and correct placement of a tibial prosthesis so as to reduce the loosening of the tibial prosthesis, perform early functional exercise and try to reduce postoperative complications.

In the conventional artificial knee joint total knee replacement operation, the intercondylar osteotomy forms three intercondylar sockets with vertical surfaces through two reciprocating saws and one oscillating saw in three operations, so that a hospital is required to be equipped with the reciprocating saws and the oscillating saws and purchase corresponding blades, the cost is very high, and the operation time is increased because the reciprocating saws and the oscillating saws need to be replaced in the operation, thereby increasing the operation risk.

Patent CN202288395U relates to an intercondylar bone drill, which is composed of a drill body and a power joint. The power joint is in a conventional interface mode and can be connected with the head of a domestic standard electric drill. The drill body is of a hollow structure, when the intercondylar bone drilling is carried out, the fallen bone can enter the drill body along the drill head, and after the bone drilling is finished, the bone can be taken out along the longitudinal window of the drill body. The head of the drill bit is a specially designed tooth shape which is uniformly distributed along the radial direction of the end part and has strong bone drilling capability.

Patent CN203447339U discloses an osteotomy ware between condyle, including cutting the groove, still include with the first examination condyle of the shape assorted of the condyle bone of human knee joint and second examination condyle, be equipped with first spout on the first examination condyle, be equipped with the second spout on the second examination condyle, one side of cutting the groove is equipped with can gliding locking lever in the first spout, cut on the groove with the opposite side that the locking lever is relative is equipped with can gliding slider in the second spout. The utility model discloses a well cutting groove can take out and slide, can realize cutting the bone in succession, shortens operation time to guarantee to cut the uniformity of bone.

Patent CN204683702U provides an intercondylar osteotomy device comprising: drilling between condyles; the guide part comprises a positioning part for positioning the femur, and a guide hole or a guide groove for guiding the intercondylar drill is arranged on the positioning part. The intercondylar osteotomy device is used for guiding the intercondylar drill by using the guide part, so that the intercondylar osteotomy accuracy is improved. However, the hard connection between the drill and the driving device affects the stress on the end of the drill and affects the flexibility of the osteotomy operation to a certain extent.

Therefore, there is a need to design an intercondylar osteotomy drill to solve the problems in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned technical problem, the utility model provides a pair of osteotomy bores between condyle, its is rational in infrastructure, has effectively improved and has cut bone efficiency, has shortened the operation time, has solved traditional artifical knee joint total knee replacement operation, and complex operation needs often to change reciprocating saw and pendulum saw, prolongs the operation time, causes the high problem of operation risk.

In order to solve the technical problem, the intercondylar osteotomy drill provided by the utility model comprises a driving end, a tool bit and a guiding part, wherein the driving end is detachably connected with the tool bit into a whole through a connecting device, and the tool bit is guided to the position to be osteotomy through the guiding part; the connecting device is in flexible connection, one end of the connecting device is connected to the driving end, and the other end of the connecting device is connected to the cutter head.

In some embodiments, the connection device is a universal joint or a flexible connection device.

In some embodiments, the connecting device includes a first connecting shaft disposed at a lower portion of the driving end and connected to the connecting rod through the first fixing column, a second connecting shaft disposed at an upper portion of the tool bit and connected to the connecting rod through the second fixing column, and a connecting rod.

In some embodiments, the first connecting shaft is transversely arranged in a first mounting groove at the lower part of the driving end, the first fixing column is arranged perpendicular to the first connecting shaft, and the connecting rod can rotate along the axis of the first fixing column.

In some embodiments, the second connecting shaft is transversely arranged in a second mounting groove in the upper portion of the cutter head, the second fixing column is arranged perpendicular to the second connecting shaft, and the connecting rod can rotate along the axis of the second fixing column.

In some embodiments, the connecting rod is an elastic rod having an H-shaped profile, the connecting rod being disposed between the driving end and the bit.

In some embodiments, the guide portion comprises a transverse surface and a vertical surface, the transverse surface and the vertical surface are vertically overlapped into a whole, the inner side of the vertical surface is attached to the position of the bone to be cut, and a guide hole is formed in the middle of the transverse surface.

In some embodiments, the pilot hole matches an outer profile of the cutter head.

In some embodiments, the vertical surface is provided with a plurality of mounting holes through which the k-wire is secured to the distal end of the femur.

In some embodiments, the intercondylar osteotomy drill further comprises a protective sleeve positioned outside of the connection device.

The utility model discloses beneficial effect:

the utility model provides an osteotomy between condyle, it is rational in infrastructure, has following technological effect:

(1) effectively improved the osteotomy efficiency, shortened operation time, solved traditional artifical knee joint total knee replacement operation, complex operation needs often to change reciprocating saw and pendulum saw, extension operation time, causes the problem that the operation risk is high.

(2) According to the intercondylar osteotomy drill, the advantage of reducing the operation risk is realized by arranging the protective sleeve, the connecting device is arranged in the protective sleeve, so that the protective sleeve can control the degree of freedom of the connecting device or limit the position of the connecting device, the problem that the arm of a user is injured and the femoral bone of a patient is possibly fractured due to an overlarge included angle formed between the driving head and the tool bit is avoided, and the safety during the operation is improved;

(3) according to the intercondylar osteotomy drill, the connecting device and the chip groove are arranged, so that the advantages of shortening the operation time and improving the operation efficiency are achieved, the driving head generates a rotary driving force through an external electric tool or a manual tool, and the driving force of the driving head can be directly transmitted to the tool bit for operation through the connection of the connecting device;

(4) this application the chip groove that the intercondylar osteotomy bored the addendum can make the bone bits in the operation discharge from the top of cutting the bone director to be convenient for when realizing reducing operation time and improve operation efficiency.

Drawings

The above advantages of the present invention will become more apparent and more readily appreciated from the detailed description taken in conjunction with the following drawings, which are given by way of illustration only and do not limit the present invention, and in which:

fig. 1 is a schematic structural view of the intercondylar osteotomy drill of the present invention;

FIG. 2 is a cross-sectional view of the intercondylar osteotomy drill of the present invention;

FIG. 3 is a bottom view of the intercondylar osteotomy drill of the present invention;

fig. 4 is a schematic structural diagram of the cutter head of the present invention.

In the figure:

1. a driving end; 2. a protective sleeve; 3. a connecting device; 4. a cutter head; 5. a chip groove; 6. a guide portion; 7. a first mounting groove; 8-1. a first connecting shaft; 8-2. a second connecting shaft; 9. a second mounting groove; 10-1, a first fixing column; 10-2, a second fixing column; 11. a blade; 12. a guide hole; 13. mounting holes; 14. a connecting rod.

Detailed Description

An intercondylar osteotomy drill of the present application is described in detail below with reference to specific embodiments and accompanying drawings.

The embodiments described herein are specific embodiments of the present invention, and are intended to be illustrative of the concepts of the present invention, which are intended to be illustrative and exemplary, and should not be construed as limiting the scope of the embodiments of the present invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include technical solutions which make any obvious replacement or modification for the embodiments described herein.

The drawings in the present specification are schematic views to assist in explaining the concept of the present invention, and schematically show the shapes of the respective portions and the mutual relationships thereof. Note that, in order to clearly show the structure of each component of the embodiment of the present invention, the same reference numerals are used to denote the same parts.

The utility model relates to a structure sketch of an intercondylar osteotomy drill, as shown in fig. 1 and fig. 4, it includes drive end 1, tool bit 4 and guide part 6, the drive end 1 is connected with tool bit 4 as an organic whole through connecting device 3 detachably, tool bit 4 leads to waiting to cut the bone department through guide part 6; the connecting device 3 is a flexible connection, one end of the connecting device is connected to the driving end 1, and the other end of the connecting device is connected to the cutter head 4.

Specifically, the cutter head 4 is used for cutting operation of intercondylar osteotomy, the driving end 1 is positioned at the upper end of the cutter head 4 and is used for driving the cutter head 4 to rotate, and the lower end of the driving end 1 is fixedly connected with the upper end of the cutter head 4 through the connecting device 3; the guide part 6 is positioned at the lower part of the cutter head 4, and the guide part 6 is matched with the cutter head 4 to guide the cutter head 4.

The utility model discloses in, connecting device 3 is universal connector or flexible connection device to optimize tool bit 4 and act on the atress of waiting to cut bone department, make the more nimble effect of tool bit 4 wait to cut bone department, improve the efficiency of cutting bone operation, shorten the time of cutting bone operation.

As one aspect of the present embodiment, the connecting device 3 includes a first connecting shaft 8-1, a first fixing post 10-1, a second connecting shaft 8-2, a second fixing post 10-2, and a connecting rod 14, as shown in fig. 2, the first connecting shaft 8-1 is disposed at a lower portion of the driving end 1 and connected to the connecting rod 14 through the first fixing post 10-1, and the second connecting shaft 8-2 is disposed at an upper portion of the cutter head 4 and connected to the connecting rod 14 through the second fixing post 10-2. Meanwhile, the first connecting shaft 8-1 is transversely arranged in the first mounting groove 7 at the lower part of the driving end 1, the first fixing column 10-1 is arranged perpendicular to the first connecting shaft 8-1, and the connecting rod 14 can rotate along the axis of the first fixing column 10-1.

As another aspect of this embodiment, the second connecting shaft 8-2 is transversely disposed in the second mounting groove 9 at the upper portion of the cutter head 4, the second fixing column 10-2 is disposed perpendicular to the second connecting shaft 8-2, and the connecting rod 14 can rotate along an axis of the second fixing column 10-2.

As an aspect of the present invention, the connecting rod 14 is an elastic rod, and the shape thereof is an H-shape, and the connecting rod 14 is disposed between the driving end 1 and the tool bit 4. In particular, the connecting rod 14 has a certain elasticity to solve the problem that the rotation center of the cutter head 4 is not consistent with the geometric center, so that the cutter head 4 arranged at the end of the connecting device 3 has stronger applicability.

The utility model discloses in, guide part 6 is including horizontal face and vertical face, and it is as an organic whole to refer to the perpendicular overlap joint of horizontal face and vertical face of fig. 1 and fig. 2, the inboard of vertical face with wait to cut the laminating of bone department, the middle part of horizontal face is provided with bullport 12.

In one aspect of this embodiment, the guide bore 12 matches the outer profile of the cutting head 4. In some embodiments, the cutting head 4 has a cross-section in the shape of a lyocell triangle, and accordingly, the guide hole 12 is also provided in the shape of a lyocell triangle, so that the cutting head 4 is stabilized in the guide hole 12 formed in the guide portion 6. As a variation of the present invention, the tool bit 4 can also be set to other shapes as long as the guide hole 12 is matched with the tool bit.

The utility model discloses in, tool bit 4 bottoms are equipped with a plurality of blades 11 that are radial evenly distributed along bottom geometric center. Preferably, the number of the blades 11 is not less than three, and 3-12 blades 11 can be arranged because too few blades can cause the cutting edge not to fall on the highest point of cutting, and the starting torque is too large, thereby causing fracture of the patient. Preferably, the number of the blades 11 is 6, so that the cutting edges of the blades fall on the highest cutting point, the starting torque is reduced, and surgical fracture is avoided. In one aspect of this embodiment, the bottom and the outer side of the blade 11 are provided with cutting edges through which cutting is performed to remove bone material during rotation.

As another aspect of the utility model, the outside of tool bit 4 is equipped with chip groove 5, can make the bone bits in the operation discharge from the top of guide part 6 to shorten operation time, be convenient for improve operation efficiency simultaneously.

As another aspect of the present invention, the vertical surface is provided with a plurality of mounting holes 13, and the kirschner wire is fixed at the distal end of the femur through the mounting holes 13.

The intercondylar osteotomy drill further comprises a protective sleeve 2, and the protective sleeve 2 is sleeved on the outer side of the connecting device 3. Specifically, the bottom of drive end 1 all extends to with the top of tool bit 4 inside protective sheath 2, connecting device 3 sets up in protective sheath 2, makes protective sheath 2 can control connecting device 3's degree of freedom or carry on spacingly, avoids forming too big contained angle between drive end 1 and the tool bit 4, injures user's arm and probably causes the problem of patient's femoral fracture, security when improving the operation.

When the bone cutting guide device is used, the driving end 1 generates rotary driving force through an external electric tool or a manual tool, the protective sleeve 2 is sleeved on the connecting device 3, the protective sleeve 2 can control the degree of freedom of the connecting device 3 or limit the position of the freedom, the driving force of the driving head 1 is directly transmitted to the tool bit 4 through the connection of the connecting device 3 to be operated, during operation, the blade 11 arranged at the bottom of the tool bit 4 is used for cutting, and through the chip removal grooves 5 additionally arranged on the tool bit 4, bone chips in an operation are discharged from the upper part of the bone cutting guide device 6.

The utility model provides a cut bone and bore between condyle, its is rational in infrastructure, has effectively improved and has cut bone efficiency, has shortened the operation time, has solved traditional artifical knee joint total knee replacement operation in, complex operation needs often to change reciprocating saw and pendulum saw, prolongs the operation time, causes the high problem of operation risk, has better spreading value.

The present invention is not limited to the above embodiments, and any person can obtain other products in various forms without departing from the scope of the present invention, but any change in shape or structure is included in the technical solution that is the same as or similar to the present invention.

Claims

1. The intercondylar osteotomy drill is characterized by comprising a driving end, a tool bit and a guide part, wherein the driving end is detachably connected with the tool bit into a whole through a connecting device, and the tool bit is guided to a position to be osteotomy through the guide part; the connecting device is in flexible connection, one end of the connecting device is connected to the driving end, and the other end of the connecting device is connected to the cutter head.

2. The intercondylar osteotomy drill of claim 1, wherein said connection device is a universal joint or a flexible connection device.

3. The intercondylar osteotomy drill of claim 1, wherein the coupling device includes a first coupling shaft disposed at a lower portion of the driving end and coupled to the coupling rod through the first fixing post, a second coupling shaft disposed at an upper portion of the cutter head and coupled to the coupling rod through the second fixing post, a second fixing post, and a coupling rod.

4. The intercondylar osteotome of claim 3, wherein said first connecting shaft is transversely disposed within a first mounting slot at a lower portion of said drive end, said first securing post is disposed perpendicular to said first connecting shaft, said connecting rod being rotatable about an axis of said first securing post.

5. The intercondylar osteotomy drill of claim 3, wherein said second connecting shaft is transversely disposed in a second mounting slot in an upper portion of said cutter head, said second fixing post is disposed perpendicular to said second connecting shaft, and said connecting rod is rotatable about an axis of said second fixing post.

6. The intercondylar osteotomy drill of claim 3, wherein said connecting rod is a resilient rod having an H-shaped profile, said connecting rod disposed between said driver end and said bit.

7. The intercondylar osteotomy drill of claim 1, wherein said guide portion comprises a transverse surface and a vertical surface vertically overlapped into a whole, an inner side of said vertical surface is attached to a bone to be osteotomy, and a guide hole is formed in a middle portion of said transverse surface.

8. The intercondylar osteotomy drill of claim 7, wherein said pilot hole matches an outer profile of the cutter head.

9. The intercondylar osteotomy drill of claim 7, wherein said vertical surface is provided with a plurality of mounting holes through which a k-wire is secured to a distal femur.

10. The intercondylar osteotomy drill of claim 1, further comprising a protective sleeve disposed laterally of the connector.