CN110711053B - Patella driver - Google Patents
Patella driver Download PDFInfo
- Publication number
- CN110711053B CN110711053B CN201911010570.8A CN201911010570A CN110711053B CN 110711053 B CN110711053 B CN 110711053B CN 201911010570 A CN201911010570 A CN 201911010570A CN 110711053 B CN110711053 B CN 110711053B
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- Prior art keywords
- handle body
- patella
- block
- sliding groove
- drill
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- 210000004417 patella Anatomy 0.000 title claims abstract description 64
- 238000009434 installation Methods 0.000 claims description 17
- 230000000694 effects Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000002513 implantation Methods 0.000 abstract description 10
- 230000006978 adaptation Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 230000036544 posture Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 210000000629 knee joint Anatomy 0.000 description 1
- 238000013150 knee replacement Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools for implanting artificial joints
- A61F2/4603—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2/461—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof of knees
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools for implanting artificial joints
- A61F2002/4687—Mechanical guides for implantation instruments
Landscapes
- Health & Medical Sciences (AREA)
- Transplantation (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Physical Education & Sports Medicine (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a patella driver, which comprises a first handle body and a second handle body which are mutually hinged, wherein a locking device is arranged between the first handle body and the second handle body, one end of the second handle body is hinged with a patella pressurizing block, one end of the second handle body is connected with a mounting part, one side of the mounting part is provided with a drill bit guide device, the bottom of the drill bit guide device is connected with a patella end face contact block, the bottom of the patella end face contact block is provided with a cambered surface fixture block, the first handle body is provided with a direction adjusting device, the direction adjusting device comprises a push block, the first handle body is internally provided with a sliding groove, the sliding groove is internally provided with a sliding strip in a sliding manner, one side of the sliding strip is provided with a rack, the bottom of the patella pressurizing block is correspondingly provided with a mounting part, and a rotating shaft is rotatably inserted between the two mounting parts, has the characteristics of simple and convenient operation and adaptation to different implantation angles.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a patella driver.
Background
Knee replacement has been a well established osteoarticular surgery by which a patient's joint is replaced with a joint prosthesis. The knee joint prosthesis comprises a femoral condyle, a tibial plateau, a tibial gasket, a patella, an extension rod and the like. The invention relates to a patella impactor, which is a surgical instrument for replacing a patella prosthesis and integrates measurement, positioning and implantation.
The patella pressurizing block of the existing patella driver can not adjust the angle, the instrument needs to be inclined downwards or upwards for a certain angle when the patella prosthesis is pressed in, the hand of an operator needs to keep the state for a long time, discomfort is caused, and the implantation precision of the patella can be influenced because the hand can not be accurately grasped due to the strength of the hand; the existing patella driver is complicated to operate when being locked at a certain angle, so that the difficulty of operation is increased; the drill bit guide block of different models can only be replaced by the existing patella driver during drilling, the patella driver cannot be finely adjusted to a proper drilling position according to the size of a patella, a patella prosthesis cannot be selected to be a proper stress point, and the fixing effect is general. Therefore, there is a need for a patella impactor that is simple to operate and accommodates different implantation angles.
Disclosure of Invention
The present invention is directed to a patella driver to solve the above problems.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a patella driver, includes the first handle body and the second handle body of mutual articulated, be provided with locking means between the first handle body and the second handle body, the one end of the second handle body articulates there is the patella to add the briquetting, the one end of the second handle body is connected with first installation department, one side of first installation department is provided with drill bit guider, drill bit guider's bottom is connected with the contact piece of patella terminal surface, the bottom of contact piece of patella terminal surface is provided with the cambered surface fixture block.
Further, be provided with the accent on the first handle body and to the device, the accent is to the device and is including the ejector pad, the spout has been seted up to the inside of the first handle body, the inside slidable mounting of spout has the strip that slides, the rack has been seted up to one side of the strip that slides, the kneecap adds the bottom correspondence of briquetting and is provided with the second installation department, two it has the pivot to rotate to peg graft between the second installation department, the arc recess has still been seted up on the second installation department, the both ends correspondence of pivot is provided with the lug, the lug contacts with the inner wall of arc recess, the gear has been cup jointed to the outside of pivot, the gear contacts with the rack.
Further, locking means includes the arc piece of fixed connection on the first handle body, the quad slit has been seted up on the second handle body, one side inner wall of quad slit is provided with the spring, one side of the second handle body articulates there is spacing the knot, spacing knot contacts with one side of spring, friction line has been seted up to spacing knot's opposite side, and friction line has also been seted up to one side of arc piece, be provided with the backing pin between the both sides inner wall of quad slit, the backing pin contacts with the arc piece.
Further, the drill bit guiding device comprises a drill bit guiding block, the drill bit guiding block is sleeved on the first installation part, a positioning pin is movably inserted into one side of the drill bit guiding block, and the positioning pin is movably inserted into the first installation part.
Furthermore, an elastic strip is arranged between the first handle body and the second handle body, and the elastic strip is two strip-shaped elastic pieces which are mutually clamped.
Further, a second sliding groove is uniformly formed in one side of the patella end face contact block, a first sliding groove is uniformly formed in one side of the drill bit guide block, a third sliding groove is uniformly formed in one side of the cambered surface clamping block, the shapes of the second sliding groove, the first sliding groove and the third sliding groove are the same, a drill bushing is arranged inside the first sliding groove, the second sliding groove is penetrated through one end of the drill bushing, a connecting rod is hinged to one side of the drill bushing, a rotary disc is connected to one side of the drill bit guide block through a bearing and is hinged to the connecting rod, a cylindrical clamping block is slidably mounted in the third sliding groove and is located inside the drill bushing.
Furthermore, a screw hole is formed in the top of the rotary table in a penetrating mode, a screw hole is also formed in the top of the drill guide block, the two screw holes are located on the same central line, and locking screws are screwed in the two screw holes.
Compared with the prior art, the invention has the following beneficial effects: in the invention, the raw materials are mixed,
(1) the locking device is arranged, when the clamping or loosening operation is needed, the angle can be adjusted by pulling the limiting buckle backwards, the self-locking can be realized by loosening, the problem of angle deviation caused by pressing type self-locking is avoided, and the clamping precision is high;
(2) by arranging the direction adjusting device, the angle of the patella pressurizing block can be adjusted according to the implantation angle of the patella prosthesis when the patella pressurizing block and the cambered surface fixture block are clamped, the looseness can be prevented, the uncomfortable hand-held posture of a doctor is avoided, and the implantation precision is high;
(3) through being provided with drill bit guider, can adjust the stress point through the relative position of rotatory carousel to three drill bushing, be fit for the patella prosthesis of multiple equidimension not, fixed effectual.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic front cross-sectional view of the first shank of the present invention;
FIG. 3 is a schematic view of the direction-adjusting device of the present invention;
FIG. 4 is a schematic view of the patella prosthesis of the present invention installed;
FIG. 5 is a schematic view of the locking mechanism of the present invention;
FIG. 6 is a schematic view of the structure of the cambered surface fixture block of the present invention;
FIG. 7 is a schematic view of the installation of the cambered fixture block and the patella face contact block of the present invention;
FIG. 8 is a schematic top view of a drill guide block of the present invention;
in the figure: 1. a first handle body; 2. a second handle body; 3. a locking device; 4. a direction adjusting device; 5. a drill guide; 6. pressurizing the patella; 7. a patellar end face contact block; 8. a cambered surface clamping block; 9. a patellar prosthesis; 11. a chute; 21. a square hole; 22. a first mounting portion; 31. an arc-shaped block; 32. a limit buckle; 33. an elastic strip; 34. a stop pin; 35. a spring; 41. a rotating shaft; 411. a bump; 42. a sliding strip; 421. a rack; 43. a push block; 44. a gear; 51. a drill guide block; 511. a first chute; 52. positioning pins; 53. drilling a sleeve; 54. a connecting rod; 55. a turntable; 56. locking screws; 61. a second mounting portion; 611. an arc-shaped groove; 71. a second chute; 81. a third chute; 82. and (4) a cylindrical clamping block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: a patella driver comprises a first handle body 1 and a second handle body 2 which are hinged with each other, a locking device 3 is arranged between the first handle body 1 and the second handle body 2, one end of the second handle body 2 is hinged with a patella pressurizing block 6, one end of the second handle body 2 is connected with a first installation part 22, one side of the first installation part 22 is provided with a drill bit guide device 5, the bottom of the drill bit guide device 5 is connected with a patella end face contact block 7, the bottom of the patella end face contact block 7 is provided with a cambered surface fixture block 8, the angle of the patella pressurizing block 6 can be freely adjusted, the patella pressurizing block can rotate for a certain angle according to different patella implantation angles, the use flexibility is improved, the drill bit guide device 5 is used for guiding a drill bit when the patella end face is drilled, the function of combining two-in-one guiding implantation is realized, the cambered surface of the cambered surface fixture block 8 is used for contacting with the smooth cambered surface of a patella prosthesis 9 when being implanted, the locking device 3 is used for keeping the angle between the first handle body 1 and the second handle body 2 unchanged;
as shown in fig. 1-3, a direction adjusting device 4 is disposed on the first handle 1, the direction adjusting device 4 includes a push block 43, a sliding groove 11 is disposed inside the first handle 1, a sliding bar 42 is slidably disposed inside the sliding groove, a rack 421 is disposed on one side of the sliding bar 42, a second mounting portion 61 is correspondingly disposed at the bottom of the patella pressurizing block 6, a rotating shaft 41 is rotatably inserted between the two second mounting portions 61, an arc groove 611 is further disposed on the second mounting portion 61, two ends of the rotating shaft 41 are correspondingly disposed with a protrusion 411, the protrusion 411 contacts with an inner wall of the arc groove 611, a gear 44 is sleeved outside the rotating shaft 41, the gear 44 contacts with the rack 421, when the angle of the patella pressurizing block 6 is adjusted, the patella pressurizing block 6 is primarily rotated according to the shape of the patella pressurizing block 6, then the push block 43 is pushed forward or backward, the push block 43 drives the sliding bar 42 to move forward or backward, the gear 44 is driven to rotate by the rack 421, the rotating shaft 41 rotates and enables the convex block 411 to abut against the arc-shaped groove 611, the inclined end of the patella pressurizing block 6 is blocked by the patella prosthesis 9, the other end of the patella pressurizing block 6 is blocked by the convex block 411, the angle of the patella pressurizing block 6 is locked, the push block 43 needs to be pushed back to the original position when the patella pressurizing block is loosened, so that the patella pressurizing block 6 can be subjected to angle adjustment according to the implantation angle of the patella prosthesis 9 when the patella pressurizing block 6 and the cambered fixture block 8 are clamped, looseness can be prevented, uncomfortable handheld postures of doctors are avoided, and the implantation precision is high;
referring to fig. 1 and 5, the locking device 3 includes an arc block 31 fixedly connected to the first handle 1, the second handle 2 has a square hole 21, a spring 35 is disposed on an inner wall of one side of the square hole 21, a limit buckle 32 is hinged to one side of the second handle 2, the limit buckle 32 contacts with one side of the spring 35, friction grains are disposed on the other side of the limit buckle 32, friction grains are also disposed on one side of the arc block 31, a stop pin 34 is disposed between inner walls of two sides of the square hole 21, the stop pin 34 contacts with the arc block 31, when the clamping or loosening operation is required, the limit buckle 32 is pulled backwards, the spring 35 is compressed, no friction grains block is present, the arc block 31 can drive the first handle 1 to move freely, i.e., the angle can be adjusted, when the spring 35 presses the limit buckle 32 against the arc block 31, the self-locking arrangement avoids the problem of angle deviation caused by the pressing self-locking, the clamping precision is high;
as shown in fig. 7, the drill guide device 5 includes a drill guide block 51, the drill guide block 51 is sleeved on the first mounting portion 22, a positioning pin 52 is movably inserted into one side of the drill guide block 51, the positioning pin 52 is movably inserted into the first mounting portion 22, when the drill guide block 51 is replaced, the positioning pin 52 is only required to be pulled out from the first mounting portion 22, and at this time, the drill guide block 51 is taken out, so that the drill guide block 51 is convenient to replace;
as shown in fig. 1, an elastic strip 33 is arranged between the first handle body 1 and the second handle body 2, the elastic strip 33 is two strip-shaped elastic pieces which are clamped with each other, when the first handle body 1 and the second handle body 2 are pinched, the elastic strip 33 is compressed to store energy, and when the elastic strip 33 is released, the elastic strip 33 is not required to be manually opened, so that the operation is convenient;
as shown in fig. 7-8, one side of the patella end face contact block 7 is uniformly provided with a second sliding groove 71, one side of the drill guide block 51 is uniformly provided with a first sliding groove 511, one side of the cambered fixture block 8 is uniformly provided with a third sliding groove 81, the shapes of the second sliding groove 71, the first sliding groove 511 and the third sliding groove 81 are the same, the drill bushing 53 is installed inside the first sliding groove 511, one end of the drill bushing 53 passes through the second sliding groove 71, one side of the drill bushing 53 is hinged with a connecting rod 54, one side of the drill guide block 51 is connected with a turntable 55 through a bearing, the turntable 55 is hinged with the connecting rod 54, the cylindrical fixture block 82 is installed in the third sliding groove 81 in a sliding manner, the cylindrical fixture block 82 is located inside the drill bushing 53, when replacing patella prostheses 9 of different sizes, the turntable 55 is rotated, at the moment, one end of the connecting rod 54 moves to drive the drill bushing 53 at the other end to move, and the relative positions of the three drill bushings 53 are adjusted to adjust stress points, the fixing device is suitable for patellar prostheses 9 with different sizes, has good fixing effect, can be adjusted by only rotating the rotating disc 55, and is simple to operate;
as shown in fig. 8, the top of the rotary table 55 is provided with a screw hole, the top of the drill guide block 51 is also provided with a screw hole, the two screw holes are located on a central line, the locking screws 56 are screwed in the two screw holes, when the distance between the drill sleeves 53 is adjusted, the locking screws 56 are screwed, at this time, the rotary table 55 is limited and does not rotate any more, and when the adjustment is needed, the locking screws 56 are loosened, so that the adjustment is convenient.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A patella impactor comprising a first (1) and a second (2) mutually articulated handle, characterized in that: a locking device (3) is arranged between the first handle body (1) and the second handle body (2), one end of the second handle body (2) is hinged with a patella pressurizing block (6), one end of the second handle body (2) is connected with a first installation part (22), one side of the first installation part (22) is provided with a drill bit guide device (5), the bottom of the drill bit guide device (5) is connected with a patella end face contact block (7), and the bottom of the patella end face contact block (7) is provided with a cambered surface clamping block (8);
the drill guide device (5) comprises a drill guide block (51), a second sliding groove (71) is uniformly formed in one side of the patella end face contact block (7), a first sliding groove (511) is uniformly formed in one side of the drill guide block (51), a third sliding groove (81) is uniformly formed in one side of the cambered surface fixture block (8), the second sliding groove (71), the first sliding groove (511) and the third sliding groove (81) are identical in shape, a drill bushing (53) is installed inside the first sliding groove (511), one end of the drill bushing (53) penetrates through the second sliding groove (71), a connecting rod (54) is hinged to one side of the drill bushing (53), a turntable (55) is connected to one side of the drill guide block (51) through a bearing, the turntable (55) is hinged to the connecting rod (54), and a cylindrical fixture block (82) is slidably installed in the third sliding groove (81), the cylindrical fixture block (82) is positioned inside the drill sleeve (53).
2. The patellar impactor of claim 1, wherein: be provided with on the first handle body (1) and transfer to device (4), transfer to device (4) including ejector pad (43), spout (11) have been seted up to the inside of the first handle body (1), the inside slidable mounting of spout has slip strip (42), rack (421) have been seted up to one side of slip strip (42), the bottom correspondence of patella adds briquetting (6) is provided with second installation department (61), two it has pivot (41) to rotate the grafting between second installation department (61), arc recess (611) have still been seted up on second installation department (61), the both ends correspondence of pivot (41) is provided with lug (411), lug (411) contact with the inner wall of arc recess (611), gear (44) have been cup jointed to the outside of pivot (41), gear (44) contact with rack (421).
3. The patellar impactor of claim 1, wherein: locking device (3) are including arc piece (31) of fixed connection on first handle body (1), quad slit (21) have been seted up on the second handle body (2), one side inner wall of quad slit (21) is provided with spring (35), one side of second handle body (2) articulates there is limit buckle (32), one side of limit buckle (32) and spring (35) contacts, friction line has been seted up to the opposite side of limit buckle (32), and friction line has also been seted up to one side of arc piece (31), be provided with backing pin (34) between the both sides inner wall of quad slit (21), backing pin (34) contact with arc piece (31).
4. The patellar impactor of claim 1, wherein: drill bit guide block (51) cup joints first installation department (22), one side activity grafting of drill bit guide block (51) has locating pin (52), locating pin (52) are pegged graft with first installation department (22) activity.
5. The patellar impactor according to claim 3, wherein: an elastic strip (33) is arranged between the first handle body (1) and the second handle body (2), and the elastic strip (33) is two strip-shaped elastic pieces which are mutually clamped.
6. The patellar impactor of claim 1, wherein: the top of the rotary table (55) is provided with screw holes in a penetrating manner, the top of the drill guide block (51) is also provided with screw holes, the two screw holes are positioned on a central line, and locking screws (56) are screwed in the two screw holes.
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CN201911010570.8A CN110711053B (en) | 2019-10-23 | 2019-10-23 | Patella driver |
Applications Claiming Priority (1)
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CN201911010570.8A CN110711053B (en) | 2019-10-23 | 2019-10-23 | Patella driver |
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CN110711053A CN110711053A (en) | 2020-01-21 |
CN110711053B true CN110711053B (en) | 2021-11-19 |
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CN111603268B (en) * | 2020-06-16 | 2022-11-22 | 王文生 | Device for pushing breast prosthesis |
WO2023114440A2 (en) * | 2021-12-15 | 2023-06-22 | RevBio, Inc. | Devices and methods for bone fixation |
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US5222955A (en) * | 1991-02-08 | 1993-06-29 | Mikhail Michael W E | Method for implanting a patellar prosthesis |
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CN2397897Y (en) * | 1999-11-24 | 2000-09-27 | 宋业良 | Bone holding claw changable type patellar fracture reductor |
CN2524696Y (en) * | 2002-01-29 | 2002-12-11 | 张德胜 | Dilator of patella focusing device |
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CN107280822B (en) * | 2017-08-02 | 2023-09-12 | 北京安颂科技有限公司 | Patella prosthesis and artificial knee joint |
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