CN213489103U - Patella bone cutting guider - Google Patents
Patella bone cutting guider Download PDFInfo
- Publication number
- CN213489103U CN213489103U CN202022452043.7U CN202022452043U CN213489103U CN 213489103 U CN213489103 U CN 213489103U CN 202022452043 U CN202022452043 U CN 202022452043U CN 213489103 U CN213489103 U CN 213489103U
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- clamp
- clamp handle
- handle
- pincers handle
- scale
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- 210000004417 patella Anatomy 0.000 title abstract description 32
- 238000005520 cutting process Methods 0.000 title abstract description 27
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 210000000080 chela (arthropods) Anatomy 0.000 abstract description 75
- 210000000988 bone and bone Anatomy 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 239000012634 fragment Substances 0.000 description 26
- 210000000078 claw Anatomy 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 210000003127 knee Anatomy 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 210000000689 upper leg Anatomy 0.000 description 2
- 101100008050 Caenorhabditis elegans cut-6 gene Proteins 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 238000011882 arthroplasty Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 210000000629 knee joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
The utility model belongs to the technical field of medical device technique and specifically relates to a patella cuts bone director. This patella bone cutting guider includes the scale, first pincers handle, the second pincers handle, pincers handle stop gear and pincers handle resilience mechanism, the scale, first pincers handle and second pincers handle are articulated from top to bottom, first pincers handle/second pincers handle divide into binding clip and tong pole along the hinged end, all be provided with the interlock tooth on the binding clip of first pincers handle and second pincers handle, the binding clip side of first pincers handle and second pincers handle all is provided with the saw kerf, the scale is provided with one at least, the scale stretches to the binding clip end of first pincers handle and second pincers handle, the lower terminal surface of different scales is different to the perpendicular distance between the saw kerf, pincers handle stop gear and resilience mechanism all set up in the pincers rod end of first pincers handle and second pincers handle. The utility model discloses a setting of scale and kerf can accurately cut the patella, can confirm the function of the different thickness of cutting fast accurately through the scale setting of difference.
Description
Technical Field
The utility model belongs to the technical field of medical device technique and specifically relates to a patella cuts bone director.
Background
Arthroplasty is a well known surgical procedure for replacing a diseased or damaged natural joint with a prosthetic joint. A typical knee prosthesis includes a tibial tray, a femoral component, and a polymer insert or bearing positioned between the tibial tray and the femoral component. In some cases, the knee joint prosthesis may also include a patella prosthesis component secured to the posterior side of the patient's surgically-prepared patella. To secure the prosthetic component to the patella, the surgeon may choose to resect the posterior side of the patient's natural patella to prepare the natural patella to receive the prosthetic component. The patella prosthetic component articulates with a patient's natural femur or prosthetic femur during extension and flexion of the patient's knee.
The existing patella bone cutting auxiliary device has the following defects: the operation process is complicated, and the determination of different cutting thicknesses needs to be carried out by means of an external tool, so that the operation difficulty is increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a patella cuts bone director overcomes the not enough of aforementioned prior art, easy operation can be fast accurately according to the fixed appurtenance of cutting thickness, can accurately cut the patella, improves patella cutting efficiency and precision, operation safe and reliable.
The utility model provides a technical scheme that its technical problem adopted is:
a patella bone cutting guider, which comprises a scale, a first clamp handle, a second clamp handle, a clamp handle limiting mechanism and a clamp handle rebounding mechanism, the scale, the first clamp handle and the second clamp handle are hinged from top to bottom through a rotating shaft bolt, the first clamp handle/the second clamp handle is divided into a clamp head and a clamp rod along the hinged end, the clamp heads of the first clamp handle and the second clamp handle are both provided with occlusion teeth, the side surfaces of the clamp heads of the first clamp handle and the second clamp handle are both provided with saw slits, at least one scale is arranged, the scales extend to the clamp end of the first clamp handle and the second clamp handle, the vertical distances from the lower end faces of different scales to the saw kerf are different, the clamp handle limiting mechanism and the rebounding mechanism are both arranged at the clamp rod ends of the first clamp handle and the second clamp handle, the clamp rods of the first clamp handle and the second clamp handle are fixed or loosened through the clamp handle limiting mechanism, and when the first clamp handle and the second clamp handle are loosened through the clamp handle limiting mechanism, the clamp rods of the first clamp handle and the second clamp handle are rebounded through the rebounding mechanism; knead the tong bar of first pincers handle and second pincers handle during the operation, the binding clip interlock tooth of first pincers handle and second pincers handle catches patient's patella, the round top of patella rear side pushes up on the lower terminal surface of scale, fix the relative position between first pincers handle and the second pincers handle through pincers handle stop gear this moment, loosen the hand, carry out the cutting of patella through the kerf with the electric saw piece, the thickness of cutting is terminal surface to the distance between the kerf under the scale, loosen pincers handle stop gear after the cutting is accomplished, first pincers handle and second pincers handle open under the effect of resilience mechanism and reset can.
Further, the staff gauge is provided with two, and the vertical distance between the lower terminal surface of one of them staff gauge and the kerf is 9mm, and the vertical distance between the lower terminal surface of another staff gauge and the kerf is 10mm, and 9mm and 10mm are two kinds of cutting thickness commonly used in the present operation, according to the operation demand, with the lower terminal surface of the staff gauge of 9mm or the lower terminal surface of the staff gauge of 10mm aim at the dome of patella rear side just can.
Furthermore, the clamp handle limiting mechanism comprises a rack, one end of the rack is hinged to a clamp rod of the second clamp handle, the other end of the rack penetrates into a rack perforation formed in the clamp rod of the first clamp handle, the width of the rack perforation is larger than the thickness of the rack, a fixture block used for clamping the rack is arranged in the rack perforation, when teeth of the rack are clamped on the fixture block, position locking is formed between the first clamp handle and the second clamp handle, cutting operation is facilitated, and only the teeth of the rack need to be moved to be separated from the fixture block after the cutting operation is completed.
Further, pincers handle resilient means includes first shell fragment and second shell fragment, first shell fragment and second shell fragment are the arc structure of symmetry, the claw beam inboard at first pincers handle is fixed to the one end of first shell fragment, the other end of first shell fragment is provided with the opening, the claw beam inboard at second pincers handle is fixed to the one end of second shell fragment, the other end of second shell fragment is provided with the inserted sheet that can insert in the opening of first shell fragment, the inserted sheet of second shell fragment inserts in the opening of first shell fragment when mediating the claw beam of first pincers handle and second pincers handle, first shell fragment and second shell fragment form the elasticity extrusion, first pincers handle and second pincers handle open rapidly and reset under the effect of elastic force when unclamping pincers handle stop gear.
The utility model has the advantages that: compared with the prior art, the utility model discloses a patella cuts bone director has following advantage: can accurately cut the kneecap through the setting of scale and kerf, can confirm the function of cutting different thickness through the scale setting of difference accurately fast, during the cutting of operation in-process, pin first pincers handle and second pincers handle through pincers handle stop gear for operation safe and reliable in the art, the cutting is accomplished and is and loosens pincers handle stop gear, and first pincers handle and second pincers handle open and reset under the effect of resilience mechanism.
Drawings
FIG. 1 is a schematic top view of the overall structure of the present invention;
FIG. 2 is a schematic front view of the overall structure of the present invention;
FIG. 3 is an enlarged sectional view of the area A of FIG. 1 according to the present invention;
the clamp comprises a scale 1, a first clamp handle 2, a second clamp handle 3, a rotating shaft bolt 4, meshing teeth 5, a saw cut 6, a rack 7, a rack perforation 8, a clamping block 9, a first elastic sheet 10 and a second elastic sheet 11.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.
In the embodiment shown in fig. 1-3, the patella osteotomy guide comprises a scale 1, a first forceps handle 2, a second forceps handle 3, a forceps handle limiting mechanism and a forceps handle rebounding mechanism, wherein the scale 1, the first forceps handle 2 and the second forceps handle 3 are hinged from top to bottom through a rotating shaft bolt 4, the first forceps handle 2/the second forceps handle 3 is divided into a forceps head and a forceps rod along the hinged end, the forceps heads of the first forceps handle 2 and the second forceps handle 3 are respectively provided with an occlusion tooth 5, the side surfaces of the forceps head of the first forceps handle 2 and the second forceps handle 3 are respectively provided with a saw slot 6, the scale 1 is at least provided with one, the scale 1 extends to the forceps head end of the first forceps handle 2 and the second forceps handle 3, the vertical distances from the lower end surfaces of different scales 1 to the saw slots 6 are different, the forceps handle limiting mechanism and the rebounding mechanism are respectively arranged at the forceps rod ends of the first forceps handle 2 and the second forceps handle 3, the forceps rod of the first forceps handle 2 and the second forceps handle 3 are fixed or loosened through the forceps handle limiting mechanism, when the first clamp handle 2 and the second clamp handle 3 are loosened by the clamp handle limiting mechanism, the clamp rods of the first clamp handle 2 and the second clamp handle 3 are rebounded by the rebounding mechanism; knead the tong bar of first pincers handle 2 and second pincers handle 3 during the operation, the binding clip interlock tooth 5 of first pincers handle 2 and second pincers handle 3 interlocks patient's patella, the round top of patella rear side pushes up on the lower terminal surface of scale 1, fix the relative position between first pincers handle 2 and second pincers handle 3 through pincers handle stop gear this moment, loosen the hand, insert the cutting that the patella was carried out to the saw bit 6 with the electric saw blade, the thickness of cutting is scale 1 down the terminal surface to the distance between the saw bit 6, the back pine pincers handle stop gear is accomplished in the cutting, first pincers handle 2 and second pincers handle 3 open under the effect of resilient means and reset can.
In this embodiment, the two rulers 1 are provided, wherein the vertical distance between the lower end surface of one of the rulers 1 and the saw kerf 6 is 9mm, the vertical distance between the lower end surface of the other one of the rulers 1 and the saw kerf 6 is 10mm, the two cutting thicknesses commonly used in the current surgery are 9mm and 10mm, and according to the operation requirement, the lower end surface of the 9mm ruler 101 or the lower end surface of the 10mm ruler 102 is aligned with the dome on the back side of the patella.
In this embodiment, pincers handle stop gear includes rack 7, the one end of rack 7 passes through the fixed pin with the claw beam of second pincers handle 3 and articulates, the other end of rack 7 penetrates in the rack perforation 8 of seting up on the claw beam of first pincers handle 2, the width of rack perforation 8 is greater than the thickness of rack 7, be provided with the fixture block 9 that is used for blocking rack 7 in the rack perforation 8, form the position locking between first pincers handle 2 and the second pincers handle 3 when blocking the tooth card of rack 7 on fixture block 9, be convenient for carry out the cutting operation, only need to remove the tooth of rack 7 to break away from fixture block 9 after the cutting operation is accomplished can.
In this embodiment, pincers handle resilient means includes first shell fragment 10 and second shell fragment 11, first shell fragment 10 and second shell fragment 11 are the arc structure of symmetry, the tong pole inboard at first pincers handle 2 is fixed to the one end of first shell fragment 10, the other end of first shell fragment 10 is provided with the opening, the tong pole inboard at second pincers handle 3 is fixed to the one end of second shell fragment 11, the other end of second shell fragment 11 is provided with the inserted sheet that can insert in the opening of first shell fragment 10, the inserted sheet of second shell fragment 11 inserts in the opening of first shell fragment 10 when kneading the tong pole of first pincers handle 2 and second pincers handle 3, first shell fragment 10 and second shell fragment 11 form the elastic extrusion, first pincers handle 2 and second pincers handle 3 open rapidly and reset under the effect of elasticity when unclamping pincers handle stop gear.
The working principle is as follows: the utility model discloses a bone director is cut to patella, knead the claw pole of first pincers handle 2 and second pincers handle 3 during the operation, patient's patella is lived in the first pincers handle 2 and the second pincers head interlock tooth 5 interlock of handle 3, the circle top of patella rear side pushes up on the lower terminal surface of scale 1, fix the relative position between first pincers handle 2 and the second pincers handle 3 through pincers handle stop gear this moment, loosen the hand, insert saw bit 6 with the electric saw blade and carry out the cutting of patella, the thickness of cutting is scale 1 down the terminal surface to the distance between the saw bit 6, loose pincers handle stop gear after the cutting is accomplished, first pincers handle 2 and second pincers handle 3 open under the effect of resilience mechanism and can reset.
The above embodiments are only specific cases of the present invention, and the protection scope of the present invention includes but is not limited to the forms and styles of the above embodiments, and any suitable changes or modifications made thereto by those skilled in the art according to the claims of the present invention shall fall within the protection scope of the present invention.
Claims (4)
1. A patellar osteotomy guide, comprising: comprises a scale, a first clamp handle, a second clamp handle, a clamp handle limiting mechanism and a clamp handle rebounding mechanism, wherein the scale, the first clamp handle and the second clamp handle are hinged from top to bottom, the first clamp handle/the second clamp handle is divided into a clamp head and a clamp rod along the hinged end, the clamp heads of the first clamp handle and the second clamp handle are both provided with an occlusion tooth, the side surfaces of the clamp heads of the first clamp handle and the second clamp handle are both provided with saw slits, at least one scale is arranged, the scales extend to the clamp end of the first clamp handle and the second clamp handle, the vertical distances from the lower end faces of different scales to the saw kerf are different, the clamp handle limiting mechanism and the rebounding mechanism are both arranged at the clamp rod ends of the first clamp handle and the second clamp handle, the clamp rods of the first clamp handle and the second clamp handle are fixed or loosened through the clamp handle limiting mechanism, and the clamp rods of the first clamp handle and the second clamp handle are rebounded through the rebounding mechanism when the first clamp handle and the second clamp handle are loosened through the clamp handle limiting mechanism.
2. The patellar osteotomy guide of claim 1, wherein: the vertical distance between the lower end face of one scale and the saw kerf is 9mm, and the vertical distance between the lower end face of the other scale and the saw kerf is 10 mm.
3. The patellar osteotomy guide of claim 1, wherein: the clamp handle limiting mechanism comprises a rack, one end of the rack is hinged to a clamp rod of the second clamp handle, the other end of the rack penetrates into a rack perforation formed in the clamp rod of the first clamp handle, the width of the rack perforation is larger than the thickness of the rack, and a clamping block used for clamping the rack is arranged in the rack perforation.
4. The patellar osteotomy guide of claim 1, wherein: the clamp handle resilience mechanism comprises a first elastic sheet and a second elastic sheet, the first elastic sheet and the second elastic sheet are of symmetrical arc structures, one end of the first elastic sheet is fixed to the inner side of a clamp rod of the first clamp handle, the other end of the first elastic sheet is provided with an opening, one end of the second elastic sheet is fixed to the inner side of a clamp rod of the second clamp handle, and the other end of the second elastic sheet is provided with an insertion sheet capable of being inserted into the opening of the first elastic sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022452043.7U CN213489103U (en) | 2020-10-29 | 2020-10-29 | Patella bone cutting guider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022452043.7U CN213489103U (en) | 2020-10-29 | 2020-10-29 | Patella bone cutting guider |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213489103U true CN213489103U (en) | 2021-06-22 |
Family
ID=76413349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022452043.7U Active CN213489103U (en) | 2020-10-29 | 2020-10-29 | Patella bone cutting guider |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213489103U (en) |
-
2020
- 2020-10-29 CN CN202022452043.7U patent/CN213489103U/en active Active
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