CN111195145A - Closed osteotomy guiding device - Google Patents
Closed osteotomy guiding device Download PDFInfo
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- CN111195145A CN111195145A CN202010135185.2A CN202010135185A CN111195145A CN 111195145 A CN111195145 A CN 111195145A CN 202010135185 A CN202010135185 A CN 202010135185A CN 111195145 A CN111195145 A CN 111195145A
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- 210000000988 bone and bone Anatomy 0.000 claims description 39
- 238000005520 cutting process Methods 0.000 claims description 18
- 238000009434 installation Methods 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 230000035876 healing Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010146 3D printing Methods 0.000 description 2
- 208000006735 Periostitis Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 210000003460 periosteum Anatomy 0.000 description 2
- 230000002980 postoperative effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; 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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Abstract
The present invention provides a closed osteotomy guide comprising: a first osteotomy guide having at least one pair of first guide through-holes, the pair of first guide through-holes having center lines arranged in parallel; the second osteotomy guide is provided with at least one pair of second guide through holes, and the center lines of the pair of second guide through holes are arranged in parallel; after the first osteotomy guide part is matched and connected with the second osteotomy guide part, a plane where the center lines of the paired first guide through holes are positioned and a plane where the center lines of the paired second guide through holes are positioned form a set angle; the distance between the midpoint of the inner tangent line of the paired first guide through holes at the distal end of the first guide member and the midpoint of the inner tangent line of the paired second guide through holes at the distal end of the second guide member is a set distance. The closed osteotomy guiding device can realize accurate high-quality osteotomy at one time, shorten the operation time and relieve the pain of patients.
Description
Technical Field
The invention relates to the technical field of medical instruments for osteotomy, in particular to a closed osteotomy guiding device.
Background
In clinical bone surgery, correcting skeletal deformities (e.g., angulation of a bend) is one of the common procedures, and osteotomy is a necessary surgical step. The osteotomy generally comprises an open osteotomy and a closed osteotomy, and the closed osteotomy has the advantage that the osteotomy surfaces are in full direct contact, so that the osteotomy is facilitated to be healed. For proximal tibial osteotomy, open osteotomy is mostly adopted, and postoperative healing is better; for the distal femur osteotomy, if the open osteotomy is adopted, the non-healing rate is very high, so the closed osteotomy is mostly adopted, and the postoperative healing effect can be obviously improved.
Chinese patent document CN110251193A discloses an individualized closed osteotomy guide plate and a manufacturing method thereof, and specifically discloses the following contents: the individualized closed bone cutting guide plate comprises a guide plate body, wherein at least two guide through grooves and at least two positioning through holes are formed in the guide plate body; the guide through grooves are arranged on the guide plate body in parallel and used for guiding the insertion position and the cutting direction of the osteotomy saw blade; the positioning through hole is used for guiding the insertion position and the insertion direction of the Kirschner wire. The guide plate body is provided with a guide through groove and/or a positioning through hole, the scanning result is extracted, three-dimensional software is used for modeling again, the guide plate is individually designed according to the condition of a patient, and the guide plate is manufactured by adopting a 3D printing technology; the design aim is that the osteotomy saw blade is matched with the osteotomy section shape and size of the osteotomy part of the patient through the guide through groove. The osteotomy guide plate disclosed in the patent literature needs to extract a scanning result, then uses three-dimensional software for modeling, and finally adopts a 3D printing technology for printing, so that the osteotomy guide plate is long in time, low in efficiency, capable of being used by only one patient at a time, and high in cost.
Therefore, how to design a medical instrument for assisting osteotomy with good universality and low cost is a technical problem which is not solved in the prior art.
Disclosure of Invention
Therefore, the invention aims to solve the technical problems that the tool for osteotomy guiding in the prior art is only used by one patient at a time, has poor universality, long manufacturing period and low efficiency, and provides a closed osteotomy guiding device with low cost and good universality.
To this end, the present invention provides a closed osteotomy guide comprising:
the first osteotomy guiding element is provided with a first guiding element proximal end and a first guiding element distal end which are oppositely arranged, and the first osteotomy guiding element is provided with at least one pair of first guiding through holes which penetrate through the first guiding element proximal end and the first guiding element distal end; the center lines of the paired first guide through holes are arranged in parallel; the first truncated guiding piece comprises a first splicing piece and a second splicing piece, and the first guiding through hole is formed by detachably splicing the first splicing piece and the second splicing piece;
the second osteotomy guide is matched and connected with the first osteotomy guide and is provided with a second guide proximal end and a second guide distal end which are arranged oppositely, and the second osteotomy guide is provided with at least one pair of second guide through holes which penetrate through the second guide proximal end and the second guide distal end; the center lines of the paired second guide through holes are arranged in parallel;
after the first osteotomy guide piece is matched and connected with the second osteotomy guide piece, a plane where the center lines of the paired first guide through holes are positioned and a plane where the center lines of the paired second guide through holes are positioned form a set angle; the distance between the midpoint of the inner tangent line of the paired first guide through holes at the distal end of the first guide member and the midpoint of the inner tangent line of the paired second guide through holes at the distal end of the second guide member is a set distance.
Preferably, after the first osteotomy guide member is matched and connected with the second osteotomy guide member, the plane of the paired second guide through hole center lines forms an included angle of 1-15 degrees with the plane of the paired first guide through hole center lines.
Preferably, the first osteotomy guide has one, and the second osteotomy guide has a plurality;
the planes of the paired second guide through hole center lines arranged on different second osteotomy guide members and the planes of the paired first guide through hole center lines respectively form included angles of 1 degree, 2 degrees, 3 degrees, 4 degrees, 5 degrees, 6 degrees, 7 degrees, 8 degrees, 9 degrees, 10 degrees, 11 degrees, 12 degrees, 13 degrees, 14 degrees or 15 degrees.
Preferably, the first guide through holes are provided in a pair on the first osteotomy guide;
the second guiding through holes are provided with 4 pairs of second osteotomy guiding parts, and the central lines of the 4 pairs of guiding through holes are arranged in parallel.
Preferably, after the first osteotomy guide is matingly engaged with the second osteotomy guide,
the distance between the internal tangent of the pair of first guide through holes at the distal end of the first guide member and the internal tangent of the pair of second guide through holes closest to the first osteotomy guide member at the distal end of the second guide member is 3 mm.
Preferably, the distance between circle centers of two adjacent pairs of second guide through holes at the far end of the second guide piece is 4 mm.
Preferably, the bone cutting device further comprises an adjusting block which is arranged between the first bone cutting guide part and the second bone cutting guide part in an inserting and pulling mode and used for increasing the distance between the middle point of the inner tangent line of the pair of first guide through holes at the far end of the first guide part and the middle point of the inner tangent line of the pair of second guide through holes at the far end of the second guide part.
As a preferable scheme, the adjusting block comprises at least one of a first adjusting block, a second adjusting block and a third adjusting block;
wherein:
after the first adjusting block is inserted between the first osteotomy guide part and the second osteotomy guide part, the distance between the midpoint of the internal tangent line of the first guide through hole in the pair at the distal end of the first guide part and the midpoint of the internal tangent line of the second guide through hole in the pair at the distal end of the second guide part can be increased by 1 mm;
after the second adjusting block is inserted between the first osteotomy guide part and the second osteotomy guide part, the distance between the midpoint of the internal tangent line of the pair of first guide through holes at the distal end of the first guide part and the midpoint of the internal tangent line of the pair of second guide through holes at the distal end of the second guide part can be increased by 2 mm;
after the third adjusting block is inserted between the first osteotomy guide part and the second osteotomy guide part, the distance between the midpoint of the internal tangent line of the pair of first guide through holes at the distal end of the first guide part and the midpoint of the internal tangent line of the pair of second guide through holes at the distal end of the second guide part can be increased by 3 mm.
As a preferable scheme, the first osteotomy guiding element is of a U-shaped structure, the first guiding through hole is arranged on the bottom surface of the U-shaped structure, and guiding grooves are arranged on two inner side surfaces of the U-shaped structure;
the second cuts bone guide for T type structure, the vertical section of T type structure inserts inside the U type structure, be equipped with on the both sides wall of vertical section and insert the inside direction arch of direction recess.
As a preferable scheme, the end parts of the two side walls of the U-shaped structure are respectively provided with at least one threaded shaft, the horizontal section of the T-shaped structure is provided with an installation through hole opposite to the threaded shaft, and the T-shaped structure further comprises a fastening nut which can be installed on the part of the threaded shaft penetrating out of the installation through hole.
The technical scheme provided by the invention has the following advantages:
1. the closed osteotomy guide device comprises a first osteotomy guide part and a second osteotomy guide part, wherein during osteotomy, the first osteotomy guide part is abutted against or fixed at a corresponding position of a bone to be osteotomy, and then two Kirschner wires penetrate out of a pair of first guide through holes respectively (from the proximal end of the first guide part to the distal end of the first guide part) and are nailed on the bone to be osteotomy; then, the skeleton with the kirschner wires is subjected to perspective, the bone entering position and angle of the other pair of the kirschner wires are determined, then a second osteotomy guide piece with a corresponding angle is connected with the first osteotomy guide piece, the openings of the pair of second guide through holes, which are positioned at the far end of the second guide piece, are aligned with the determined bone entering position, after the second osteotomy guide piece and the first osteotomy guide piece are fixed, the other two kirschner wires can be driven into the aligned pair of second guide through holes, when the four kirschner wires are all nailed, the first osteotomy guide piece and the second osteotomy guide piece can be taken down (the first splicing piece and the second splicing piece are separated), at the moment, an osteotomy knife can be used for carrying out osteotomy by being close to the kirschner wires, so that the angle of osteotomy is ensured to be accurate, and two osteotomy lines starting from the positions of the upper and the lower pairs of the kirschner wires are respectively communicated at the position close to the outer wall of the skeleton, thereby completing the high-quality osteotomy at one time. The closed osteotomy guiding device can realize accurate high-quality osteotomy at one time, shorten the operation time, relieve the pain of patients, and can be repeatedly used after adjustment according to the conditions of different patients, and has quick adjustment and low cost.
2. According to the closed osteotomy guide device, after the first osteotomy guide part and the second osteotomy guide part are matched and connected, the included angle of 1-15 degrees is formed between the plane where the paired second guide through hole center lines are located and the plane where the paired first guide through hole center lines are located; this range of angles substantially meets the osteotomy needs of most patients.
3. According to the closed osteotomy guide device, the second osteotomy guide part is provided with a plurality of second osteotomy guide parts, and when a specific angle needs to be intercepted, the second osteotomy guide part with the specific angle is selected to be matched with the first osteotomy guide part.
4. According to the closed osteotomy guide device, 4 pairs of second guide through holes are formed in the second osteotomy guide part, and after the first osteotomy guide part and the second osteotomy guide part are matched and connected, a proper second guide through hole can be selected to be aligned with a selected bone entering position and used for nailing a second pair of kirschner pins.
5. The closed osteotomy guiding device comprises a pair of internal tangents of a first guiding through hole, which are positioned at the far end of a first guiding part, and an internal tangent, which is positioned at the far end of a second guiding part, of a pair of second guiding through holes, which are closest to the first osteotomy guiding part, wherein the distance between the internal tangents is 3 mm; and the distance between circle center connecting lines of the two adjacent pairs of second guide through holes at the far ends of the second guide pieces is 4 mm. Thus, the closed osteotomy guide of the present invention has a corresponding pair of second guide through holes aligned at positions 3mm, 7mm, 11mm, 15mm from the first pair of k-wires.
6. The closed osteotomy guide device further comprises an adjusting block which is arranged between the first osteotomy guide part and the second osteotomy guide part in a pluggable manner and used for increasing the distance between the midpoint of the internal tangent of the paired first guide through holes at the far end of the first guide part and the midpoint of the internal tangent of the paired second guide through holes at the far end of the second guide part. Preferably, the adjusting block comprises at least one of a first adjusting block, a second adjusting block and a third adjusting block, so that a pair of second guide through holes can be aligned with the second guide through holes from any one distance of 3-18mm, thereby facilitating the nailing of the second guide through holes.
7. According to the closed osteotomy guide device, the U-shaped first osteotomy guide part is connected with the T-shaped second osteotomy guide part through the guide groove and the guide protrusion in a sliding fit manner, so that the movement is more accurate; further, including threaded shaft, installation through-hole and fastening nut, after first osteotomy guide, second osteotomy guide and the second of adjusting the agent piece combination are good, accessible threaded shaft, installation through-hole and fastening nut are with the three tightly fixed together, conveniently carry out subsequent operation of nailing into ke shi needle.
Drawings
To more clearly illustrate the technical solutions in the prior art or the embodiments of the present invention, the drawings used in the description of the prior art or the embodiments are briefly introduced below.
FIG. 1 is a schematic view of a closed osteotomy.
Figure 2 is a schematic diagram of the construction of the closed osteotomy guide of the present invention.
FIG. 3 is a schematic view of the first splicing element and the second splicing element separated.
Fig. 4 is a schematic diagram of the structure of fig. 2 with the addition of a regulating block.
Reference numerals: 1. a first osteotomy guide; 11. a first guide proximal end; 12. a first guide distal end; 13. a guide groove; 14. a threaded shaft; 15. a first splice; 16. a second splice; 2. a second osteotomy guide; 21. a second guide proximal end; 22. a second guide distal end; 23. a guide projection; 24. a vertical section; 25. a horizontal segment; 26. mounting a through hole; 31. a first regulating block; 32. a second regulating block; 33. a third regulating block; 41. a first guide through hole; 42. a second guide through hole; 5. fastening a nut; 6. bones to be cut; 7. the bone is to be removed; 81. a first osteotomy location; 82. a second osteotomy location; 83. and (4) a junction point.
Detailed Description
In order to more clearly describe the present invention, it is necessary to briefly describe the osteotomy principle of the closed osteotomy. Fig. 1 illustrates the principle of closed osteotomy, specifically, an osteotomy procedure in which a bone 6 to be osteotomy is cut from a first osteotomy position 81 and a second osteotomy position 82 by using an osteotome, and finally to a junction 83 position, the bone 7 to be removed is cut, and then the upper and lower sections are snapped into contact, thereby correcting the curvature of the bone. In order to accurately correct the bone curvature after osteotomy, an included angle between the first osteotomy position 81 and the second osteotomy position 82 needs to be accurately determined, and the angle needs to be ensured not to be deviated during osteotomy; for rapid healing after osteotomy, the junction 83 needs to be cut right to the edge of the bone and not to break the periosteum. The difficulty in the prior art is that the first osteotomy angle is not accurate enough, and the second is that the position of the junction is not well controlled, but the invention aims to precisely control the osteotomy angle and ensure that the junction 83 is exactly cut to the edge of the bone without damaging the periosteum.
The technical solution of the present invention is described in detail below with reference to the accompanying drawings.
The present embodiment provides a closed osteotomy guide, as shown in fig. 2-4, comprising: the bone cutting guide comprises a first bone cutting guide 1 and a second bone cutting guide, wherein the first bone cutting guide 1 is provided with a first guide proximal end 11 and a first guide distal end 12 which are oppositely arranged, and a pair of first guide through holes 41 which penetrate through the first guide proximal end 11 and the first guide distal end 12 are arranged on the first bone cutting guide 1; the center lines of the pairs of first guide through holes 41 are arranged in parallel; the first osteotomy guide 1 comprises a first splicing member 15 and a second splicing member 16, and the first guide through hole 41 is formed by detachably splicing the first splicing member 15 and the second splicing member 16; a second osteotomy guide 2, coupled to the first osteotomy guide 1, having a second guide proximal end 21 and a second guide distal end 22 disposed opposite to each other, wherein the second osteotomy guide 2 has at least one pair of second guide through holes 42 passing through the second guide proximal end 21 and the second guide distal end 22; the center lines of the pair of second guide through holes 42 are arranged in parallel; after the first osteotomy guide 1 is matched and connected with the second osteotomy guide 2, a plane where the center lines of the paired first guide through holes 41 are positioned and a plane where the center lines of the paired second guide through holes 42 are positioned form a set angle; the distance between the midpoint of the inner tangent of the pair of first guide through holes 41 at the first guide distal end 12 and the midpoint of the inner tangent of the pair of second guide through holes 42 at the second guide distal end 22 is a set distance.
When the closed osteotomy guide device of the embodiment is used for osteotomy, the first osteotomy guide 1 is firstly abutted against or fixed on a corresponding position of a bone to be osteotomy, and then two kirschner wires are respectively penetrated out from the pair of first guide through holes 41 and are nailed on the bone to be osteotomy; then, the skeleton with the kirschner wires is subjected to perspective so as to determine the bone entering position and angle of the other pair of the kirschner wires, then, the second osteotomy guide 2 having the corresponding angle is coupled to the first osteotomy guide 1 with the pair of second guide through holes 42 open at the second guide distal end 22 aligned with the determined bone entry location, and after the second osteotomy guide 2 is secured to the first osteotomy guide 1, i.e. another two k-wires can be driven into the aligned pair of second guiding through holes 42, and after all four k-wires are nailed, the first osteotomy guiding element 1 and the second osteotomy guiding element 2 can be taken down, and an osteotome can be used to cut bones by pressing the kirschner wire, therefore, the angle of osteotomy is accurate, and two osteotomy lines for osteotomy from the upper and lower pairs of kirschner pins can be communicated at the position very close to the outer wall of the skeleton, so that high-quality osteotomy can be completed at one time.
After the first osteotomy guide 1 and the second osteotomy guide 2 are connected in a matching mode, the included angle between the plane where the center lines of the paired second guide through holes 42 are located and the plane where the center lines of the paired first guide through holes 41 are located is 1-15 degrees.
In the present embodiment, the number of the first osteotomy guide 1 is one, and the number of the second osteotomy guide 2 is 15; the planes of the center lines of the paired second guide through holes 42 arranged on different second osteotomy guide members 2 and the planes of the center lines of the paired first guide through holes 41 respectively form included angles of 1 degree, 2 degrees, 3 degrees, 4 degrees, 5 degrees, 6 degrees, 7 degrees, 8 degrees, 9 degrees, 10 degrees, 11 degrees, 12 degrees, 13 degrees, 14 degrees or 15 degrees. This range of angles substantially meets the osteotomy needs of most patients. When a specific angle needs to be cut, the second osteotomy guide 2 with the specific angle is selected to be matched with the first osteotomy guide 1.
The first guide through holes 41 are provided in a pair on the first osteotomy guide 1; the second guide through holes 42 are provided with 4 pairs of the second osteotomy guide 2, and the center lines of the 4 pairs of the second guide through holes 42 are arranged in parallel.
The second guide through holes 42 are provided with 4 pairs of second osteotomy guides 2, and when the first osteotomy guide 1 is coupled with the second osteotomy guide 2, the appropriate second guide through hole 42 can be selected to be aligned with the selected bone entry position for driving the second pair of k-wires.
After the first osteotomy guide 1 is connected with the second osteotomy guide 2 in a matching manner, the distance between an internal tangent of the first guide through hole 41 at the first guide distal end 12 and an internal tangent of the second guide through hole 42 closest to the first osteotomy guide 1 at the second guide distal end 22 is 3 mm. The distance between the circle centers of the second guide far ends 22 of two adjacent pairs of second guide through holes 42 is 4 mm. Thus, in the closed osteotomy guide of this embodiment, there is a corresponding pair of second guide through holes 42 aligned for positions 3mm, 7mm, 11mm, 15mm from the first pair of k-wires.
The internal tangent of the pair of first guide through holes 41 at the first guide distal end 12 in this embodiment is the tangent of the pair of first guide through holes 41 at the first guide distal end 12 side close to the second osteotomy guide 2; similarly, the internal tangent of the pair of second guiding through holes 42 at the distal end 22 of the second guiding element refers to the tangent of the pair of second guiding through holes 42 at the side of the distal end 22 of the second guiding element close to the first osteotomy guiding element 1.
As a modification, an adjusting block 3 is further included for being removably mounted between the first osteotomy guide 1 and the second osteotomy guide 2 for increasing a distance between a midpoint of an internal tangent of the pair of first guide through holes 41 at the first guide distal end 12 and a midpoint of an internal tangent of the pair of second guide through holes 42 at the second guide distal end 22.
The adjusting block 3 includes at least one of a first adjusting block 31, a second adjusting block 32, and a third adjusting block 33; wherein: the first adjusting block 31 is inserted between the first osteotomy guide 1 and the second osteotomy guide 2 to increase a distance of 1mm between a midpoint of an internal tangent of the pair of first guide through holes 41 at the first guide distal end 12 and a midpoint of an internal tangent of the pair of second guide through holes 42 at the second guide distal end 22; the second adjusting block 32 is inserted between the first osteotomy guide 1 and the second osteotomy guide 2 to increase the distance 2mm between the midpoint of the internal tangent of the pair of first guide through holes 41 at the first guide distal end 12 and the midpoint of the internal tangent of the pair of second guide through holes 42 at the second guide distal end 22; the third adjustment block 33 is inserted between the first osteotomy guide 1 and the second osteotomy guide 2 to increase the distance of 3mm between the midpoint of the internal tangent of the pair of first guide through holes 41 at the first guide distal end 12 and the midpoint of the internal tangent of the pair of second guide through holes 42 at the second guide distal end 22. Thus, from any one distance of 3-18mm, there may be a pair of second guide through holes 42 aligned therewith to facilitate accurate driving of the second guide through holes.
The first osteotomy guide part 1 is of a U-shaped structure, the first guide through hole 41 is formed in the bottom surface of the U-shaped structure, and guide grooves 13 are formed in two inner side surfaces of the U-shaped structure; the second osteotomy guide 2 is of a T-shaped structure, a vertical section 24 of the T-shaped structure is inserted into the U-shaped structure, and guide protrusions 23 which can be inserted into the guide grooves 13 are arranged on two side walls of the vertical section 24. The U-shaped first osteotomy guide 1 is connected with the T-shaped second osteotomy guide 2 through the guide groove 13 and the guide protrusion 23 in a sliding fit mode, and the movement is more accurate.
The end parts of the two side walls of the U-shaped structure are respectively provided with at least one threaded shaft 14, the horizontal section 25 of the T-shaped structure is provided with an installation through hole 26 opposite to the threaded shaft, and the T-shaped structure further comprises a fastening nut 5 which can be installed on the part of the threaded shaft 14 penetrating out of the installation through hole 26. After the first osteotomy guide part 1, the second osteotomy guide part 2 and the adjusting block 3 are combined, the three parts can be tightly fixed together through the threaded shaft 14, the mounting through hole 26 and the fastening nut 5, and subsequent operation of nailing the kirschner wire is facilitated.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A closed osteotomy guide, comprising: the method comprises the following steps:
the bone cutting guide comprises a first bone cutting guide part (1) and a second bone cutting guide part, wherein the first bone cutting guide part (1) is provided with a first guide part proximal end (11) and a first guide part distal end (12) which are arranged oppositely, and at least one pair of first guide through holes (41) penetrating through the first guide part proximal end (11) and the first guide part distal end (12) are arranged on the first bone cutting guide part (1); the center lines of the first guide through holes (41) in pairs are arranged in parallel; the first truncated guiding element (1) comprises a first splicing element (15) and a second splicing element (16), and the first guiding through hole (41) is formed by detachably splicing the first splicing element (15) and the second splicing element (16);
the second osteotomy guide (2) is matched and connected with the first osteotomy guide (1) and is provided with a second guide proximal end (21) and a second guide distal end (22) which are arranged oppositely, and at least one pair of second guide through holes (42) penetrating through the second guide proximal end (21) and the second guide distal end (22) are arranged on the second osteotomy guide (2); the center lines of the paired second guide through holes (42) are arranged in parallel;
after the first osteotomy guide (1) is matched and connected with the second osteotomy guide (2), a plane where the center lines of the paired first guide through holes (41) are located and a plane where the center lines of the paired second guide through holes (42) are located form a set angle; the distance between the midpoint of the internal tangent of the pair of first guide through holes (41) at the first guide distal end (12) and the midpoint of the internal tangent of the pair of second guide through holes (42) at the second guide distal end (22) is a set distance.
2. The closed osteotomy guide of claim 1, wherein: after the first osteotomy guide part (1) is matched and connected with the second osteotomy guide part (2), the included angle between the plane where the center lines of the paired second guide through holes (42) are positioned and the plane where the center lines of the paired first guide through holes (41) are positioned is 1-15 degrees.
3. The closed osteotomy guide of claim 2, wherein: the first osteotomy guide (1) has one, and the second osteotomy guide (2) has a plurality;
the planes of the center lines of the paired second guide through holes (42) arranged on different second osteotomy guide pieces (2) and the planes of the center lines of the paired first guide through holes (41) respectively form included angles of 1 degree, 2 degrees, 3 degrees, 4 degrees, 5 degrees, 6 degrees, 7 degrees, 8 degrees, 9 degrees, 10 degrees, 11 degrees, 12 degrees, 13 degrees, 14 degrees or 15 degrees.
4. A closed osteotomy guide as defined in claim 2 or 3, wherein:
the first guide through holes (41) are provided in pairs on the first osteotomy guide (1);
the second guiding through holes (42) are provided with 4 pairs of second osteotomy guiding pieces (2), and the central lines of the 4 pairs of guiding through holes (42) are arranged in parallel.
5. The closed osteotomy guide of claim 4, wherein: after the first osteotomy guiding element (1) is matched and connected with the second osteotomy guiding element (2),
the distance between the internal tangent of the pair of first guide through holes (41) at the first guide distal end (12) and the internal tangent of the pair of second guide through holes (42) closest to the first osteotomy guide (1) at the second guide distal end (22) is 3 mm.
6. The closed osteotomy guide of claim 5, wherein: the distance between circle center connecting lines of two adjacent pairs of second guide through holes (42) at the far ends (22) of the second guide pieces is 4 mm.
7. The closed osteotomy guide of claim 5 or 6, wherein: the bone cutting device further comprises an adjusting block (3) which is arranged between the first bone cutting guide part (1) and the second bone cutting guide part (2) in a pluggable mode and used for increasing the distance between the middle point of the inner tangent line of the paired first guide through holes (41) at the far end (42) of the first guide part and the middle point of the inner tangent line of the paired second guide through holes (42) at the far end (22) of the second guide part.
8. The closed osteotomy guide of claim 7, wherein: the adjusting block (3) comprises at least one of a first adjusting block (31), a second adjusting block (32) and a third adjusting block (33);
wherein:
the first adjustment block (31) is capable of increasing the distance of 1mm between the midpoint of the internal tangent of the pair of first guide through holes (41) at the first guide distal end (12) and the midpoint of the internal tangent of the pair of second guide through holes (42) at the second guide distal end (22) after being inserted between the first osteotomy guide (1) and the second osteotomy guide (2);
the second adjustment block (32) is capable of increasing the distance of 2mm between the midpoint of the internal tangent of the pair of first guide through holes (41) at the first guide distal end (12) and the midpoint of the internal tangent of the pair of second guide through holes (42) at the second guide distal end (22) after being inserted between the first osteotomy guide (1) and the second osteotomy guide (2);
after the third adjusting block (33) is inserted between the first osteotomy guide (1) and the second osteotomy guide (2), the distance between the midpoint of the internal tangent of the pair of first guide through holes (41) at the first guide distal end (12) and the midpoint of the internal tangent of the pair of second guide through holes (42) at the second guide distal end (22) can be increased by 3 mm.
9. The closed osteotomy guide of claim 1, wherein: the first osteotomy guide part (1) is of a U-shaped structure, the first guide through hole (41) is formed in the bottom surface of the U-shaped structure, and guide grooves (13) are formed in two inner side surfaces of the U-shaped structure;
the second cuts bone guide (2) and is T type structure, vertical section (24) of T type structure insert inside the U type structure, be equipped with on the both sides wall of vertical section (24) and insert inside direction arch (23) of direction recess (13).
10. The closed osteotomy guide of claim 9, wherein: the end parts of the two side walls of the U-shaped structure are respectively provided with at least one threaded shaft (14), the horizontal section (25) of the T-shaped structure is provided with an installation through hole (26) opposite to the threaded shaft, and the T-shaped structure further comprises a fastening nut (5) which can be installed on the part of the threaded shaft (14) penetrating out of the installation through hole (26).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010135185.2A CN111195145B (en) | 2020-03-02 | 2020-03-02 | Closed osteotomy guiding device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010135185.2A CN111195145B (en) | 2020-03-02 | 2020-03-02 | Closed osteotomy guiding device |
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| CN111195145B CN111195145B (en) | 2024-08-23 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5078719A (en) * | 1990-01-08 | 1992-01-07 | Schreiber Saul N | Osteotomy device and method therefor |
| JP2004298259A (en) * | 2003-03-28 | 2004-10-28 | Zimmer Kk | Tool for upper tibia osteotomy |
| DE102006050311A1 (en) * | 2006-10-25 | 2008-04-30 | Brehm, Peter | Template, for revision osteotomy, has a body mounted to the bone with longitudinal and parallel slits at an angle through the body to guide the saw blade |
| CN108095802A (en) * | 2018-02-09 | 2018-06-01 | 陕西东望科技有限公司 | A kind of orthopedic positioning osteotomy guide plate and a kind of osteotomy straightening method |
| CN211674434U (en) * | 2020-03-02 | 2020-10-16 | 山东大学齐鲁医院(青岛) | Cut bone guider |
-
2020
- 2020-03-02 CN CN202010135185.2A patent/CN111195145B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5078719A (en) * | 1990-01-08 | 1992-01-07 | Schreiber Saul N | Osteotomy device and method therefor |
| JP2004298259A (en) * | 2003-03-28 | 2004-10-28 | Zimmer Kk | Tool for upper tibia osteotomy |
| DE102006050311A1 (en) * | 2006-10-25 | 2008-04-30 | Brehm, Peter | Template, for revision osteotomy, has a body mounted to the bone with longitudinal and parallel slits at an angle through the body to guide the saw blade |
| CN108095802A (en) * | 2018-02-09 | 2018-06-01 | 陕西东望科技有限公司 | A kind of orthopedic positioning osteotomy guide plate and a kind of osteotomy straightening method |
| CN211674434U (en) * | 2020-03-02 | 2020-10-16 | 山东大学齐鲁医院(青岛) | Cut bone guider |
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| Publication number | Publication date |
|---|---|
| CN111195145B (en) | 2024-08-23 |
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