CN220495052U - Drill bit for orthopaedics - Google Patents
Drill bit for orthopaedics Download PDFInfo
- Publication number
- CN220495052U CN220495052U CN202321556099.4U CN202321556099U CN220495052U CN 220495052 U CN220495052 U CN 220495052U CN 202321556099 U CN202321556099 U CN 202321556099U CN 220495052 U CN220495052 U CN 220495052U
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- CN
- China
- Prior art keywords
- drill bit
- reaming
- drill
- piece
- bit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 230000000399 orthopedic effect Effects 0.000 claims description 15
- 239000007787 solid Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 17
- 210000000988 bone and bone Anatomy 0.000 description 15
- 238000004080 punching Methods 0.000 description 4
- 238000002513 implantation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 206010052428 Wound Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Abstract
The utility model discloses an orthopaedics drill bit, which comprises: the drill bit body comprises a drill bit part positioned at the front end, a rod part positioned in the middle and a handle part positioned at the tail end; the reaming piece is of a hollow sleeve structure and sleeved on the drill bit main body; the front end ring of the reaming piece is provided with a cutting edge for reaming, the drill bit part passes through the cutting edge, and the tail end of the reaming piece can be fixed at different positions of the rod part; the adjusting piece is used for adjusting the position of the tail end of the reaming piece, which is fixed on the rod part of the drill bit main body, so as to adjust the length of the drill bit part penetrating through the reaming piece. The orthopaedics drill bit provided by the utility model has the advantages that the drilling and reaming operations are completed once, secondary drilling is not needed, the pain of a patient is relieved, the operation efficiency is improved, the drilling depth is adjustable, the using range of the drill bit is improved, and the economic burden of the patient is reduced.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a drill bit for orthopaedics.
Background
Bone screws are an important implant instrument in surgery, and in bone surgery, it is sometimes necessary to drill holes with an orthopedic drill. The diameter of the tail cap or the tail part of the bone screw is larger than that of the head part, and the bone screw or the tail part is flush with the bone surface in the bone screw implantation process, so that reaming is needed on the basis of one drilling.
Currently, existing orthopedic drill bits generally have only one diameter and do not have a reaming function. If the reaming function is to be realized, only one orthopaedics drill bit with larger diameter can be used, and the secondary thickening reaming is performed along the position of the first drilling, but when the secondary thickening reaming is performed, the positioning is inaccurate and slipping easily, the locating point is deviated, artificial wounds can be caused even, and meanwhile, the patient needs to bear secondary pain, so that the pain of the patient is increased, and the operation efficiency is reduced. Aiming at the problem, the patent number 201620043739.5 provides an orthopaedics drill bit which comprises a first section of drill bit, a second section of drill bit and a drill rod which are connected in sequence; the diameter of the first section of drill bit is smaller than that of the second section of drill bit. The second section of the orthopedic drill bit of this technique is used for reaming functions, but it can only be used with single gauge fixed length bone screws, and its range of use is limited. The drill bit specifications are too many aiming at bone screws with different specifications, the processing cost is increased, the use cost of patients is increased, and the economic burden is heavy.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide the drill bit for orthopaedics.
The utility model provides an orthopaedics drill bit, which comprises:
the drill bit body comprises a drill bit part which is positioned at the front end and provided with a cutting edge, a rod part positioned in the middle and a handle part positioned at the tail end;
the reaming piece is of a hollow tubular structure and sleeved on the drill bit main body; the front end ring of the reaming piece is provided with a cutting edge for reaming, the drill bit part passes through the cutting edge, and the tail end of the reaming piece can be fixed at different positions of the rod part;
the adjusting piece is used for adjusting the tail end of the reaming piece to be fixed at the position of the rod portion, and then adjusting the length of the drill bit portion penetrating through the reaming piece.
Further, the tail end of the reaming piece is provided with a positioning hole, and the rod part is provided with a plurality of positioning holes; the adjusting piece passes through the positioning hole of the reaming piece and then fixes the reaming piece to one of the positioning holes of the rod part.
Further, scale marks are arranged at the positioning holes of the rod parts.
Further, the interval between the adjacent positioning holes is 2-4mm.
Further, the adjusting piece is a threaded knob or a push button.
Further, the inside of the drill bit main body is of a hollow structure and is used for accommodating the positioning component.
Further, the interior of the bit body is a solid structure.
Further, the top of the drill part is a plane.
Further, the bit body is integrally formed.
According to the orthopedic drill bit provided by the utility model, through the form of the sleeve, the drilling and reaming operations are completed once, secondary drilling is not needed, the pain of a patient is relieved, the operation efficiency is improved, the drilling depth is adjustable, the using range of the drill bit is increased, and the economic burden of the patient is lightened.
Drawings
FIG. 1 is a schematic view of an orthopedic drill bit according to an alternative embodiment of the present utility model;
FIG. 2 is a schematic cross-sectional view of a bit body of an orthopedic drill bit according to an alternative embodiment of the present utility model;
FIG. 3 is a schematic cross-sectional view of an orthopedic drill according to an alternative embodiment of the present utility model;
FIG. 4 is an enlarged partial schematic view of FIG. 3;
fig. 5 is a side view of an orthopedic drill bit in an alternative embodiment of the present utility model.
Detailed Description
The technical means adopted by the utility model to achieve the preset aim are further described below by matching with the drawings and the preferred embodiments of the utility model.
As shown in fig. 1 to 3, the orthopedic drill of the present utility model includes a drill body 1, a reamer member, and an adjuster member: wherein, the bit body 1 comprises a bit part 11 positioned at the front end and provided with a cutting edge, a rod part 12 positioned in the middle and a handle part 13 positioned at the tail end; the reaming piece 2 is of a hollow sleeve structure and sleeved on the drill body 1; wherein, the front end ring of the reaming piece 2 is provided with a cutting edge 21 for reaming, the bit part 11 passes through, and the tail end can be fixed at different positions of the rod part 12 of the bit main body 1; the adjusting member 3 adjusts the position at which the tail end of the reamer member 2 is fixed to the shank 12 of the bit body 1, thereby adjusting the length of the bit portion 11 passing through the reamer member 2.
The cutting edge of the bit portion 11 is a first bit for deep drilling, and the cutting edge 21 of the reamer 2 is a second bit for reaming. Because the tubular structure of the reaming part 2 is sleeved on the drill bit main body 1, the reaming part and the drill bit main body are positioned on the same central shaft, reaming operation can be completed once when punching is performed, the location of the reaming position is accurate, and the length of the first drill bit is adjusted through the adjusting part 3, so that the utility model is suitable for bone screws with different lengths and has wide application range.
In an alternative embodiment, as shown in fig. 2, the bit body 1 is of unitary construction. The bit 11 is provided with a helical cutting edge, and the diameter of the bit 11 corresponds to the diameter of the shank 12. In order to realize the fixation of the adjusting piece 3, the rod part 12 is provided with a plurality of positioning holes 121, graduations are arranged at the positions of the positioning holes 121 in a ring mode, the interval between adjacent graduations is 2-4mm, and the length of adjustment can be directly read through the graduations. Further, the diameter of the shank 13 of the bit body 1 is larger than the diameter of the shank 12, and the shank 13 is provided with a milling plane 131 which limits when rotating axially, preventing the bit from slipping; the rear end of the shank 13 is circumferentially provided with a snap-fit annular groove 132.
In an alternative embodiment, the cutting edge 21 of the forward end of the reamer member 2 is non-adjustable in length. The tail end of the reaming member 2 is provided with a positioning hole 22, and the adjusting member 3 passes through the positioning hole 22 of the reaming member 2 to fix the reaming member 2 to one of the positioning holes 121 of the shank 12 of the drill body 1.
In an alternative embodiment, the adjustment member 3 is a threaded knob or push button. When the threaded knob is adopted, the positioning hole 121 of the opposite rod part is provided with matched internal threads. The push button is provided with a matched clamping structure on the positioning hole 121 of the opposite rod part. As shown in fig. 4, the push button is a push button that can be quickly snapped into the positioning hole 121 of the stem 12.
Further, the interior of the bit body 1 may be of solid or hollow construction.
When the inside of the drill bit main body 1 adopts a solid structure, according to the length of a bone screw to be implanted, the position of the reaming member 2 on the drill bit main body 1 is adjusted, and the reaming member 2 is fixed at a proper position on the drill bit main body 1 by the adjusting member 3 at the tail part; then, punching holes are formed in the positions, needing to be punched, of bones, drilling and reaming are carried out by using the orthopaedics drill bit, and after the drilling is completed, the drill bit is taken out for the next bone screw implantation work; the operation of drilling and reaming is completed once is simple and convenient.
When the interior of the drill body 1 adopts a hollow structure, as shown in fig. 3 to 5, i.e., the channel a has a hollow structure, which can accommodate a positioning member, such as a k-wire. For use with positioning means such as a positioning needle, the top of the drill bit 11 is preferably planar. On the one hand, the locating part can be protruded out of the plane to locate, on the other hand, the plane structure can avoid deviation in the punching process. In practical application, in operation preparation, selecting a bone screw with proper specification, and adjusting the adjusting piece 3 to fix the reaming piece 2 at a proper position of the rod part 12 on the drill main body 1; and then, firstly driving a Kirschner wire into the center of the part of the bone to be punched when the punching work is carried out, and sleeving the central through hole of the drill bit for orthopaedics, which is disclosed by the utility model, outside the Kirschner wire to carry out drilling and reaming, and taking out the drill bit after the drilling is finished, so as to carry out the next hollow bone screw implantation work. Because the first drill bit and the second drill bit are positioned on the same shaft, the Kirschner wire is utilized for positioning and limiting during drilling, the drilling and positioning can be accurately performed, the phenomenon of hole position deviation can not occur, and the operation of drilling and reaming can be completed once.
The present utility model is not limited to the above-mentioned embodiments, but is capable of modification and variation in all embodiments without departing from the spirit and scope of the present utility model.
Claims (9)
1. A drill for orthopaedics, comprising:
the drill bit body comprises a drill bit part which is positioned at the front end and provided with a cutting edge, a rod part positioned in the middle and a handle part positioned at the tail end;
the reaming piece is of a hollow tubular structure and sleeved on the drill bit main body; wherein, the front end ring of the reaming piece is provided with a cutting edge for reaming, so that the drill bit part can pass through; the tail end of the reaming piece can be fixed at different positions of the rod part;
the adjusting piece is used for adjusting the tail end of the reaming piece to be fixed at the position of the rod portion, and then adjusting the length of the drill bit portion penetrating through the reaming piece.
2. The orthopedic drill according to claim 1, wherein the end of the reamer is provided with a positioning hole, and the shank is provided with a plurality of positioning holes; the adjusting piece passes through the positioning hole of the reaming piece and then fixes the reaming piece to one of the positioning holes of the rod part.
3. The orthopedic drill according to claim 2, wherein graduation marks are provided at the positioning hole of the shaft.
4. A drill for orthopaedics according to claim 3, wherein the interval between adjacent positioning holes is 2-4mm.
5. The orthopaedic drill of claim 1 or 2, wherein the adjustment member is a threaded knob or push button.
6. The orthopedic drill according to claim 1, wherein the interior of the drill body is hollow for receiving a positioning member.
7. The orthopedic drill bit of claim 6, wherein the top of the bit section is a flat surface.
8. The orthopedic drill bit of claim 1, wherein the interior of the bit body is solid in construction.
9. The orthopedic drill bit of claim 1, wherein the bit body is integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321556099.4U CN220495052U (en) | 2023-06-19 | 2023-06-19 | Drill bit for orthopaedics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321556099.4U CN220495052U (en) | 2023-06-19 | 2023-06-19 | Drill bit for orthopaedics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220495052U true CN220495052U (en) | 2024-02-20 |
Family
ID=89873670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321556099.4U Active CN220495052U (en) | 2023-06-19 | 2023-06-19 | Drill bit for orthopaedics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220495052U (en) |
-
2023
- 2023-06-19 CN CN202321556099.4U patent/CN220495052U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |