CN111803175A - Osteotomy positioning tool - Google Patents
Osteotomy positioning tool Download PDFInfo
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- CN111803175A CN111803175A CN202010797016.5A CN202010797016A CN111803175A CN 111803175 A CN111803175 A CN 111803175A CN 202010797016 A CN202010797016 A CN 202010797016A CN 111803175 A CN111803175 A CN 111803175A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/16—Instruments for performing osteoclasis; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1739—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
- A61B17/1764—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the knee
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/16—Instruments for performing osteoclasis; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1732—Guides or aligning means for drills, mills, pins or wires for bone breaking devices
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- Orthopedic Medicine & Surgery (AREA)
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- Oral & Maxillofacial Surgery (AREA)
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Abstract
The invention relates to the technical field of medical instruments, in particular to an osteotomy positioning tool, which comprises: the femur osteotomy block is provided with two symmetrical osteotomy grooves, a plurality of equidistant positioning hole groups and a connecting part; the bone cutting positioning shell is provided with a notch at the side part, the other two adjacent corresponding side parts are provided with clamping devices, the clamping devices are matched with the connecting part, the bone cutting positioning shell penetrates through one end side part and is provided with a swinging cavity, the edge of the bottom of one opening of the swinging cavity extends outwards and is provided with a swinging seat, and the end part of the swinging seat is provided with a pressing limiting device; one end of the medullary cavity positioning seat is connected inside the swinging cavity in a shaft mode, the other end of the medullary cavity positioning seat is matched with the limiting portion of the pressing limiting device, so that the actions of bone cutting, medullary cavity positioning, extramedullary positioning and eversion related to the distal end of the femur are integrated on a bone cutting positioning shell, and the operation efficiency is improved.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an osteotomy positioning tool.
Background
Osteoarthritis (OA) is a chronic joint disease characterized by degeneration, destruction and hyperosteogeny of articular cartilage, and has become one of the most common causes of chronic disabilities of the middle-aged and elderly, and knee replacement is currently used as a mature surgical technique for joint surgery, and has an absolute surgical efficacy for relieving pain and deformity of knee joints of elderly patients. Today, the curative effect of knee joint surgery is still the most critical operation technology in the rapid development of knee joint prostheses, and the accuracy of the force line of knee joint replacement is closely related to the long-term life of the prostheses.
When present carrying out the osteotomy operation to the thighbone, still there is a great deal of inconvenience in the time, for example, the thighbone angle precision that turns up is not high, the dismouting of thighbone osteotomy piece is inconvenient, the osteotomy piece is adjusted inconveniently when the osteotomy in-process need be adjusted the osteotomy position, and most locate mode adopts the screw to connect soon or the nail hole is fixed moreover, and the operation is inefficient.
Disclosure of Invention
In view of the above, embodiments of the present invention have been developed to provide an osteotomy positioning tool that overcomes, or at least partially addresses, the above-identified problems.
In order to solve the above problems, an embodiment of the present invention discloses an osteotomy positioning tool, including:
the femur osteotomy block is provided with two symmetrical osteotomy grooves and a plurality of equidistant positioning hole groups by penetrating through two corresponding end surfaces, and the side edge of the femur osteotomy block far away from the positioning holes is provided with a connecting part by extending outwards;
the bone cutting positioning shell is provided with a notch penetrating through the hollow interior at the side part, clamping devices for clamping the bone cutting positioning shell are arranged at the other two adjacent corresponding side parts, the clamping parts of the clamping devices are matched with the connecting parts penetrating through the notch and penetrating through the notch to the interior of the bone cutting positioning shell, a swinging cavity is arranged at one end of the bone cutting positioning shell penetrating through the side part along the axis direction of the notch, a swinging seat is arranged at the edge of the bottom of an opening of the swinging cavity far away from the notch in an outward extending manner, and a pressing limiting device is arranged at the end part of the swinging seat;
one end of the medullary cavity positioning seat is connected inside the swinging cavity in a shaft mode, and the other end of the medullary cavity positioning seat extends along the length direction of the swinging seat and is matched with the limiting portion of the pressing limiting device.
Furthermore, each positioning hole group is provided with two positioning holes which are arranged along the length direction of the osteotomy groove, and the distance between the adjacent positioning hole groups is equal.
Furthermore, cut bone positioning shell and the adjacent corresponding lateral part of notch and be equipped with the breach respectively, clamping device includes that two symmetries articulate the splint in the breach outside, splint including be used for articulated gyration portion, use the gyration portion is the centre gripping portion that the diagonal symmetry set up as the center and presses the splenium, press the splenium the interior terminal surface with be equipped with first spring between the outer wall of location shell, the clamping part is located breach one side, the connecting portion of thighbone osteotomy piece wear to locate inside the notch and two the clamping part clamp of splint closes.
Furthermore, a clamping groove is formed in the side wall, corresponding to the clamping part, of the connecting part of the femoral osteotomy block.
Furthermore, the other end of the pulp cavity positioning seat is an arc-shaped block, and the bottom end of the arc-shaped block extends towards two sides and is provided with a first tooth-pattern surface; the pressing limiting device comprises a pressing plate, a second spring and a convex block, wherein one end of the pressing plate is hinged to the swing seat, the second spring is arranged at the middle bottom of the pressing plate, the convex block is arranged at the top of the pressing plate, and a second tooth surface meshed with the first tooth surface is arranged on the top end surface of the convex block.
Furthermore, angle scales and degree values are marked on the outer arc-shaped surface of the arc-shaped block.
Furthermore, the angle difference between two adjacent insections of the first insection surface is 1 DEG
Furthermore, the bone cutting and positioning device further comprises an extramedullary fixing frame, a casing with a cross-shaped section is arranged at the top of the bone cutting and positioning shell, a sleeve rod matched with the casing in a sliding mode is arranged at the bottom of the extramedullary fixing frame, and a hollow sleeve is vertically arranged at the end portion of the sleeve rod.
Furthermore, the sleeve pipe is provided with a plurality of, and a plurality of the sleeve pipes are arranged side by side along the length direction of the loop bar
The embodiment of the invention has the following advantages:
the bone cutting device has the advantages that the bone cutting, medullary cavity positioning, extramedullary positioning and eversion actions related to the bone cutting of the distal femur are integrated on the bone cutting positioning shell, the generating devices of all the actions can be conveniently disassembled and assembled with the bone cutting positioning shell, the operation bone cutting precision is guaranteed, the operation positioning process is simplified, and the operation efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of the osteotomy positioning tool of the present invention;
FIG. 2 is a front cut-away schematic view of the osteotomy positioning tool of the present invention;
FIG. 3 is a side cut-away schematic view of the osteotomy positioning tool of the present invention;
FIG. 4 is a schematic view of a femoral resection block according to the present invention;
fig. 5 is a schematic front view of an arcuate block of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Taking a distal femur osteotomy as an example, a flat osteotome is used.
Referring to fig. 1 to 5, an osteotomy positioning tool includes:
the femur osteotomy block 1 is provided with two symmetrical osteotomy grooves 11 and a plurality of equidistant positioning hole 12 groups by penetrating through two corresponding end surfaces, and the side edge of the femur osteotomy block 1 far away from the positioning holes 12 is provided with a connecting part 13 by extending outwards;
the osteotomy groove 11 is used for guiding when the osteotomy cuts a bone, generally, before cutting, the femur osteotomy block 1 passes through the positioning hole 12 through the fixing nail and is positioned on a femur, the osteotomy groove 11 corresponds to a position to be cut, however, in the process of an operation, some osteotomy sizes need to be readjusted after once cutting is completed, in the past, the fixing nail needs to be pulled out again, the femur osteotomy block 1 needs to be installed again, pain of a patient is aggravated while operation efficiency is affected, by the scheme, the fixing nail is kept unchanged, only the femur osteotomy block 1 needs to be moved, mutual positions of the femur osteotomy block 1 and the fixing nail are changed, and excessive pain does not need to be caused for the patient while the osteotomy size can be adjusted.
The bone cutting positioning shell 2 is provided with a notch 21 penetrating through the hollow interior at the side part, clamping devices for clamping the interior of the bone cutting block 1 are arranged at the other two adjacent corresponding side parts, the clamping devices clamp the bone cutting block 1 in the bone cutting positioning shell 2, the clamping parts of the clamping devices are matched with a connecting part 13 penetrating through the notch 21 to the interior of the bone cutting positioning shell, a swinging cavity 22 is arranged at one end of the bone cutting positioning shell penetrating through the side part along the axial direction of the notch 21, a swinging seat 23 extends outwards from the edge of the bottom of an opening of the swinging cavity 22 far away from the notch 21, and a pressing limiting device is arranged at the end part of the swinging seat 23;
one end of the pulp cavity positioning seat 3 is coupled inside the swinging cavity 22, and the other end extends along the length direction of the swinging seat 23 to be matched with the limiting part of the pressing limiting device.
A through hole is arranged between one end and the other end of the medullary cavity positioning seat 3 in a penetrating manner and is used for penetrating through a medullary cavity positioning rod 37, the medullary cavity positioning seat 3 and the osteotomy positioning shell 2 swing relatively, a shaft piece is arranged in the swing cavity 22 and is rotationally connected with the medullary cavity positioning seat 3 through the shaft piece, but the medullary cavity positioning seat 3 is interfered by the side edge of the swing cavity 22 in the swing cavity 22, namely the side edge of the osteotomy positioning shell 2, the swinging angle is limited, but the angle size meets the requirement of the everted femur far end of the femur osteotomy block 1;
after the medullary cavity positioning rod 37 passes through the through hole and is positioned in the medullary cavity, the medullary cavity positioning seat 3 is kept fixed, at the moment, the femur osteotomy block 1 is installed on the osteotomy positioning shell 2, and the swinging seat 23 which can be stabilized by taking the fixed medullary cavity positioning seat 3 as a reference drives the osteotomy positioning shell 2 so as to drive the femur osteotomy block 1 to realize the requirement of femur far-end eversion.
In an embodiment, each of the positioning hole 12 sets has two positioning holes 12, and the positioning holes 12 are arranged along the length direction of the osteotomy slot 11, and the distances between adjacent positioning hole 12 sets are equal, in this embodiment, the distance between two positioning holes 12 in each positioning hole 12 set is 38 mm, the distance between adjacent positioning hole 12 sets is 1 mm, and two adjacent positioning hole 12 sets are staggered, so as to realize the longitudinal and transverse adjustment of the femoral osteotomy block 1.
In an embodiment, the corresponding side parts of the osteotomy positioning shell 2 adjacent to the notch 21 are respectively provided with a notch, the clamping device comprises two symmetrically hinged clamping plates 24 outside the notch, each clamping plate 24 comprises a rotary part for hinging, a clamping part and a pressing part, the clamping part and the pressing part are symmetrically arranged along a diagonal line by taking the rotary part as a center, a first spring 25 is arranged between the inner end surface of the pressing part and the outer wall of the positioning shell, the clamping part is positioned on one side of the notch, and the connecting part 13 of the femoral osteotomy block 1 is arranged inside the notch 21 in a penetrating manner and clamped with the clamping parts of the two clamping plates 24.
In the above embodiment, the clamping plate 24 pushes out the pressing portion outwards by the action force of the first spring 25, the clamping portions move inwards around the turning portion, and the two clamping portions move relatively to clamp the connecting portion 13 of the femoral resection block 1 inserted into the notch 21, so that the femoral resection block 1 is fixed on the resection positioning shell 2.
In one embodiment, the connecting portion 13 of the femoral osteotomy block 1 is provided with a clamping groove 14 on a side wall thereof corresponding to the clamping portion.
In the above embodiment, the clamping portion moves into the clamping groove 14 toward the inside of the osteotomy positioning shell 2, so as to form an effective clamping and limiting effect.
In another clamping method, the side walls of the clamping part, which are contacted with the fixed end, can be provided with deeper insections, and the effect of stable clamping can be achieved through insection meshing.
In one embodiment, the other end of the pulp cavity positioning seat 3 is an arc-shaped block 31, and the bottom end of the arc-shaped block 31 extends towards two sides and is provided with a first tooth-pattern surface 32; the pressing limiting device comprises a pressing plate 33, one end of which is hinged to the swing seat 23, a second spring 34 arranged at the middle bottom of the pressing plate 33 and a convex block arranged at the top of the pressing plate 33, wherein the top end face of the convex block is provided with a second tooth-pattern surface 35 meshed with the first tooth-pattern surface 32.
The medullary cavity positioning rod 37 is not arranged in front of the medullary cavity, and the medullary cavity positioning seat 3 can horizontally swing relative to the osteotomy positioning shell 2 and is mutually referred; the second spring 34 pushes up the pressing portion of the pressing plate 33 to engage the second tooth-print surface 35 of the protrusion with the first tooth-print surface 32 of the arc block 31, and presses the pressing plate 33 downward to release the engagement, but the swinging seat 23 on the osteotomy positioning shell 2 can be rotated when the medullary cavity positioning rod 37 is inserted into the medullary cavity.
When the first tooth-print surface 32 is engaged with the second tooth-print surface 35, the spring is in a compressed state, because the relative displacement angle between the positioning block and the positioning shell is limited, the spring can be always in a compressed state, that is, the convex block is ensured to be constantly kept at the top and engaged with the arc-shaped block 31 when no pressure is applied to the pressing part
In an embodiment, the outer arc surface of the arc block 31 is marked with angle scales and a degree value 36, specifically, the angle difference between two adjacent insections of the first insection surface 32 is 1 °, and the indication icons are arranged on the protruding block and the pressing plate 33, so that the turning angle value of the fixed shell can be determined, and the precision of the operation can be improved.
In an embodiment, the distal end of the femur needs to be positioned extramedullary when cutting bone, the application provides an extramedullary fixing frame 4 capable of being rapidly assembled and disassembled with a bone cutting positioning shell 2 so as to facilitate the fixation of the extramedullary positioning rod, a sleeve 26 with a cross-shaped section is arranged at the top of the bone cutting positioning shell 2, a sleeve rod 41 in sliding fit with the sleeve 26 is arranged at the bottom of the extramedullary fixing frame 4, and a hollow sleeve 42 is vertically arranged at the end part of the sleeve rod 41.
Further, the sleeve 42 is provided with a plurality of sleeves 42, and the plurality of sleeves 42 are arranged side by side along the length direction of the sleeve rod 41 so as to adapt to patients with different body sizes.
The embodiment provided by the invention realizes that the actions of osteotomy, medullary cavity positioning, extramedullary positioning and eversion related to the distal femur osteotomy are integrated on the osteotomy positioning shell 2, and the generating devices of all the actions can be conveniently disassembled and assembled with the osteotomy positioning shell 2, thereby ensuring the precision of the operative osteotomy, simplifying the operative positioning process and improving the operative efficiency.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be 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 terminal 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 terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The osteotomy positioning tool provided by the invention is described in detail, and the principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (9)
1. An osteotomy positioning tool, comprising:
the femur osteotomy block is provided with two symmetrical osteotomy grooves and a plurality of equidistant positioning hole groups by penetrating through two corresponding end surfaces, and the side edge of the femur osteotomy block far away from the positioning holes is provided with a connecting part by extending outwards;
the bone cutting positioning shell is provided with a notch penetrating through the hollow interior at the side part, clamping devices for clamping the bone cutting positioning shell are arranged at the other two adjacent corresponding side parts, the clamping parts of the clamping devices are matched with the connecting parts penetrating through the notch and penetrating through the notch to the interior of the bone cutting positioning shell, a swinging cavity is arranged at one end of the bone cutting positioning shell penetrating through the side part along the axis direction of the notch, a swinging seat is arranged at the edge of the bottom of an opening of the swinging cavity far away from the notch in an outward extending manner, and a pressing limiting device is arranged at the end part of the swinging seat;
one end of the medullary cavity positioning seat is connected inside the swinging cavity in a shaft mode, and the other end of the medullary cavity positioning seat extends along the length direction of the swinging seat and is matched with the limiting portion of the pressing limiting device.
2. The osteotomy positioning tool of claim 1, wherein each of said positioning hole sets has two positioning holes aligned along a length of said osteotomy slot, a distance between adjacent positioning hole sets being equal.
3. The osteotomy positioning tool of claim 1, wherein the corresponding side portions of the osteotomy positioning shell adjacent to the notch are respectively provided with a notch, the clamping device comprises two symmetrically hinged clamping plates outside the notch, each clamping plate comprises a rotary portion for hinging, clamping portions symmetrically arranged in a diagonal direction with the rotary portion as a center, and a pressing portion, a first spring is arranged between an inner end surface of the pressing portion and an outer wall of the positioning shell, the clamping portions are located on one side of the notch, and a connecting portion of the femoral osteotomy block penetrates through the inside of the notch to be clamped with the clamping portions of the two clamping plates.
4. The osteotomy positioning tool of claim 3, wherein said connecting portion of said femoral osteotomy block defines a gripping slot in a sidewall thereof corresponding to said gripping portion.
5. The osteotomy positioning tool of claim 1, wherein the other end of said medullary cavity positioning seat is an arc-shaped block, and a bottom end of said arc-shaped block extends to two sides to form a first tooth-pattern surface; the pressing limiting device comprises a pressing plate, a second spring and a convex block, wherein one end of the pressing plate is hinged to the swing seat, the second spring is arranged at the middle bottom of the pressing plate, the convex block is arranged at the top of the pressing plate, and a second tooth surface meshed with the first tooth surface is arranged on the top end surface of the convex block.
6. The osteotomy positioning tool of claim 5, wherein an angular scale and degree scale are inscribed on the outer arcuate face of said arcuate block.
7. The osteotomy positioning tool of claim 6, wherein said first insection surface has an angle of 1 ° between two adjacent insections.
8. The osteotomy positioning tool of claim 1, further comprising an extramedullary fixing frame, wherein a cross-section casing is arranged at the top of the osteotomy positioning shell, a sleeve rod which is in sliding fit with the casing is arranged at the bottom of the extramedullary fixing frame, and a hollow sleeve is vertically arranged at the end of the sleeve rod.
9. The osteotomy positioning tool of claim 8, wherein said sleeve is provided in a plurality, said plurality of sleeves being disposed side-by-side along a length of said shank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010797016.5A CN111803175B (en) | 2020-08-10 | 2020-08-10 | Osteotomy positioning tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010797016.5A CN111803175B (en) | 2020-08-10 | 2020-08-10 | Osteotomy positioning tool |
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| CN111803175A true CN111803175A (en) | 2020-10-23 |
| CN111803175B CN111803175B (en) | 2022-03-29 |
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| CN202010797016.5A Active CN111803175B (en) | 2020-08-10 | 2020-08-10 | Osteotomy positioning tool |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114469377A (en) * | 2022-02-16 | 2022-05-13 | 常州鼎健医疗器械有限公司 | Distal femur extramedullary positioning tool and positioning system |
| CN114948077A (en) * | 2022-07-11 | 2022-08-30 | 北京爱康宜诚医疗器材有限公司 | Osteotomy tool |
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| CN111067587A (en) * | 2019-12-20 | 2020-04-28 | 哈尔滨医科大学 | DDH Proximal Femoral Osteotomy Guide in Children and Its Use |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114469377A (en) * | 2022-02-16 | 2022-05-13 | 常州鼎健医疗器械有限公司 | Distal femur extramedullary positioning tool and positioning system |
| CN114948077A (en) * | 2022-07-11 | 2022-08-30 | 北京爱康宜诚医疗器材有限公司 | Osteotomy tool |
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| Publication number | Publication date |
|---|---|
| CN111803175B (en) | 2022-03-29 |
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