CN217592975U - Double-rack pendulum saw blade with pull-back cutting function - Google Patents
Double-rack pendulum saw blade with pull-back cutting function Download PDFInfo
- Publication number
- CN217592975U CN217592975U CN202220572810.4U CN202220572810U CN217592975U CN 217592975 U CN217592975 U CN 217592975U CN 202220572810 U CN202220572810 U CN 202220572810U CN 217592975 U CN217592975 U CN 217592975U
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- Prior art keywords
- pull
- rack
- saw blade
- cut
- patella
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- Expired - Fee Related
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- 244000208734 Pisonia aculeata Species 0.000 title claims abstract description 20
- 210000001519 tissue Anatomy 0.000 claims abstract description 11
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 210000004417 patella Anatomy 0.000 abstract description 17
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 206010005963 Bone formation increased Diseases 0.000 description 1
- 208000008558 Osteophyte Diseases 0.000 description 1
- 208000001132 Osteoporosis Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 210000000845 cartilage Anatomy 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
The utility model provides a double rack pendulum saw bit with pull-back cutting function, includes advancing rack, lightening hole, opening, locating hole, its characterized in that: a pull-back rack is arranged in the lightening hole and used for cutting bone surface tissues through pull-back action; the beneficial effects are that: when the patella surface is repaired, the tissue on the surface of the cut bone is easy to control due to the pull-back action, the tissue on the surface of the patella cannot be excessively cut, and the cutting thickness is easy to master; the cut surface is smooth and has no over-cut groove mark; the patella articular surface is more closely attached to the prosthesis, the operation quality is improved, and the operation time is shortened.
Description
Technical Field
The utility model relates to a saw blade of a medical swing saw.
Background
At present, a medical swing saw is used in a hospital for patella replacement and patella trimming, and the saw blade for the medical swing saw is called as follows: the swing saw blade (shown in figure 1) is made of a stainless steel sheet, and only has one advancing rack and can only carry out pushing cutting; the disadvantages are that: the control is not easy when the surface of the patella is repaired, firstly, the tissue on the surface of the patella is easy to be cut excessively (cut: swing is removed), and the cutting thickness is not easy to master; secondly, the cut surface is not smooth and has groove marks of excessive cutting; thirdly, the matching between the modified patella articular surface and the prosthesis is not ideal; fourthly, the operation is only performed slowly to improve the operation quality, and the operation time is prolonged.
Disclosure of Invention
The utility model aims at overcoming the defects in the prior art and designing a double-rack pendulum saw blade with a pull-back cutting function.
In order to achieve the purpose, the utility model adopts the technical proposal that:
the utility model provides a double rack pendulum saw bit with pull-back cutting function, includes advancing rack, lightening hole, opening, locating hole, its characterized in that: and a pull-back rack is arranged in the lightening hole and used for cutting bone surface tissues through pull-back action.
As an optimization, the double-rack pendulum saw blade with the pullback cutting function according to the above is characterized in that: the material of the pendulum saw blade is hard resin.
Compared with the prior art, the utility model beneficial effect be: when the patella surface is repaired, the tissue on the surface of the cut bone is easy to control due to the pull-back action, the tissue on the surface of the patella cannot be excessively cut, and the cutting thickness is easy to master; the cut surface is smooth and has no over-cut groove mark; the patella articular surface is more closely attached to the prosthesis, the operation quality is improved, and the operation time is shortened.
Drawings
FIG. 1 is a prior art medical oscillating saw blade;
FIG. 2 is a top view of FIG. 1;
fig. 3 is a schematic structural view of an embodiment of the double rack pendulum saw blade with the pull-back cutting function according to the present invention.
Description of the drawing symbols:
1. swinging a saw blade; 2. a forward rack; 3. a front lightening hole; 4. a rear lightening hole; 5. opening the gap; 6. positioning holes; 7. the rack is pulled back.
Detailed Description
Fig. 1 is a medical swing saw blade of the prior art, fig. 2 is a top view of fig. 1, the swing saw blade 1 of the prior art comprises an advancing rack 2, a front lightening hole 3, a rear lightening hole 4, a notch 5 and a positioning hole 6, and the swing saw blade only has one advancing rack 2 and can only push cutting; the disadvantages are that: the control is not easy when the surface of the patella is repaired, firstly, the tissue on the surface of the patella is easy to be over-cut (cut: swing is removed), and the cutting thickness is not easy to master; secondly, the cut surface is not smooth and has groove marks of excessive cutting; thirdly, the matching between the modified patella articular surface and the prosthesis is not ideal; fourthly, the operation is only performed slowly to improve the operation quality, and the operation time is prolonged.
Example 1
Fig. 3 is the structural schematic diagram of the double rack pendulum saw blade embodiment with the cutting function of pulling back, the utility model relates to a double rack pendulum saw blade 1 with cutting function of pulling back, including advancing rack 2, preceding lightening hole 3, back lightening hole 4, opening 5, locating hole 6, preceding lightening hole 3 in have a rack 7 of pulling back for the action of pulling back cuts bone surface texture. The front lightening holes 3 and the rear lightening holes 4 are collectively called as lightening holes and can be one or more. The oscillating saw sheet material may be a stainless steel sheet.
Example 2
According to the double-rack pendulum saw blade with the pullback cutting function in the embodiment 1, the material of the pendulum saw blade 1 is hard resin; the resin material is easier to manufacture, has low manufacturing cost and is more suitable for one-time use; meanwhile, the injury of the resin to the skeleton is reduced, and the cut correction surface is smoother; especially suitable for the operation of cartilage and osteoporosis parts.
When the bone cutting machine is used, the swinging saw blade is pulled back, and the pull-back rack 7 can cut redundant bone tissues such as hyperosteogeny, bone spurs and the like without damaging normal bone surfaces. When the patella surface is repaired, the tissue on the surface of the cut bone is easy to control due to the pull-back action, the tissue on the surface of the patella cannot be excessively cut, and the cutting thickness is easy to master; the cut surface is smooth and has no over-cut groove mark; the patella articular surface is matched with the prosthesis more closely, the operation quality is improved, and the operation time is shortened.
Claims (2)
1. The utility model provides a double rack pendulum saw bit with pull-back cutting function, includes advancing rack, lightening hole, opening, locating hole, its characterized in that: and a pull-back rack is arranged in the lightening hole and used for cutting bone surface tissues through pull-back action.
2. A double rack pendulum saw blade with a pullback cutting function according to claim 1, wherein: the material of the pendulum saw blade is hard resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220572810.4U CN217592975U (en) | 2022-03-16 | 2022-03-16 | Double-rack pendulum saw blade with pull-back cutting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220572810.4U CN217592975U (en) | 2022-03-16 | 2022-03-16 | Double-rack pendulum saw blade with pull-back cutting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217592975U true CN217592975U (en) | 2022-10-18 |
Family
ID=83562531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220572810.4U Expired - Fee Related CN217592975U (en) | 2022-03-16 | 2022-03-16 | Double-rack pendulum saw blade with pull-back cutting function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217592975U (en) |
-
2022
- 2022-03-16 CN CN202220572810.4U patent/CN217592975U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20221018 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |