CN210354874U - Pile foundation internal fixing device for radius head comminuted fracture - Google Patents
Pile foundation internal fixing device for radius head comminuted fracture Download PDFInfo
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- CN210354874U CN210354874U CN201920749258.XU CN201920749258U CN210354874U CN 210354874 U CN210354874 U CN 210354874U CN 201920749258 U CN201920749258 U CN 201920749258U CN 210354874 U CN210354874 U CN 210354874U
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- pile foundation
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- 208000024779 Comminuted Fractures Diseases 0.000 title claims abstract description 22
- 206010017076 Fracture Diseases 0.000 claims abstract description 15
- 208000010392 Bone Fractures Diseases 0.000 claims abstract description 14
- 239000012620 biological material Substances 0.000 claims description 9
- 241000561734 Celosia cristata Species 0.000 claims description 4
- 210000001520 comb Anatomy 0.000 claims description 4
- 210000000988 bone and bone Anatomy 0.000 abstract description 22
- 208000001148 Cartilage Fractures Diseases 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000007012 clinical effect Effects 0.000 abstract description 2
- 230000035876 healing Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 230000007547 defect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000005498 polishing Methods 0.000 description 4
- 210000002310 elbow joint Anatomy 0.000 description 3
- 241000131317 Capitulum Species 0.000 description 2
- 206010019196 Head injury Diseases 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 210000000245 forearm Anatomy 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 208000002658 Intra-Articular Fractures Diseases 0.000 description 1
- 206010060820 Joint injury Diseases 0.000 description 1
- 208000001132 Osteoporosis Diseases 0.000 description 1
- 208000037099 Prosthesis Failure Diseases 0.000 description 1
- 206010048873 Traumatic arthritis Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 210000001188 articular cartilage Anatomy 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000845 cartilage Anatomy 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 210000004439 collateral ligament Anatomy 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000002758 humerus Anatomy 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000002271 resection Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
- 210000000623 ulna Anatomy 0.000 description 1
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Abstract
A pile foundation internal fixing device for radius head comminuted fracture relates to the technical field of medical instruments, in particular to a pile foundation internal fixing device for radius head comminuted fracture. The utility model discloses a radius bone comminuted fracture pile foundation internal fixation device, its fixed theory be metaphysis fracture intramedullary fixed principle, and its characterized in that the device includes prism staple, intramedullary fixation stake and annular fixed band three. The utility model discloses a radius head comminuted fracture pile foundation internal fixation device, carry out the restoration of radius head comminuted fracture from multi-direction multi-angle through intramedullary fixation stake and prismatic staple, annular fixed band, be particularly useful for cracked and the reconstruction of the thin cartilage fracture piece, can reduce the operation degree of difficulty; effectively avoiding the replacement of the head of the radius at the first stage, saving the medical cost and having positive clinical effect; the surface of the intramedullary fixing pile adopts a micropore design, which is beneficial to bone ingrowth and promotes fracture healing.
Description
Technical Field
The utility model belongs to the technical field of the medical instrument technique and specifically relates to a pile foundation internal fixation device of radius head comminuted fracture is related to.
Background
The top surface and the side surface of the head of the radius are both covered by articular cartilage for 360 degrees, the upper part and the small head of the humerus form a brachial-radial joint, and the side surface and the upper trace on the ulna form an ulnar-radial joint, which is an important structure for the rotation of the forearm. Fracture of the radius head accounts for 0.8% of the total fracture, and about l/3 of patients have joint injury. The fracture of the radius head is an intra-articular fracture, if displacement occurs, incision is needed to restore internal fixation, the anatomical position is recovered, and early movement is needed to recover the extension and flexion of the elbow joint and the rotation function of the forearm, but the repair of the comminuted fracture of the radius head is one of the very tricky operations in the trauma orthopedics.
At present, the severe comminuted fracture of the radius head (Masson type 3 and 4) is treated by replacing or excising the radius head. The prosthesis replaced by the radius head is not a normal anatomical structure, is expensive, and has complications such as long-term secondary traumatic arthritis, prosthesis loosening and sinking and the like; the problems of unstable elbow joint, proximal displacement of radius, influence on the stability of the lower ulnar joint and the like can occur after the head of the radius is resected, and the resection of the head of the radius is contraindicated for patients with dislocation of the elbow joint and injury of the collateral ligament. The suggestions of more scholars advocate the repair, reconstruction and fixation of the radius head, but no ideal fixation scheme exists at present for Masson type 3 and Masson type 4 radius head fractures.
With the progress and development of absorbable material synthesis and modification technology, biomedical degradable high molecular materials and modified materials thereof are increasingly widely applied in the biomedical field, and become development trends of academic research and clinical application. Compared with non-degradable metal materials, the degradable high polymer material fracture fixation material has the following advantages: firstly, along with the prolonging of the implantation time, the material is degraded continuously, the strength of the device is reduced continuously, and the osteoporosis or the function degradation caused by the stress shielding effect can be effectively reduced or eliminated; secondly, the operation is not needed to be taken out for the second time, thereby reducing the operation expense and the pain of the patient.
Disclosure of Invention
The utility model aims to solve the problem that the radius head is smashed and is fractured, does not have a better fixing scheme, and provides a design science, easy and simple to handle, safe and reliable's comminuted fracture pile foundation internal fixation device of radius head.
The utility model discloses a radius bone comminuted fracture pile foundation internal fixation device, its fixed theory are metaphysis fracture intramedullary fixed principle, and its characterized in that the device includes prism staple, intramedullary fixation stake and annular fixed band three, wherein:
the prismatic fixing nail is made of absorbable biological material into a prismatic body with an equilateral rhombus section, and the diameters of the prismatic fixing nail are 1.6mm, 2.2mm or 2.7mm respectively;
the intramedullary fixation pile comprises a round table and a columnar body, and is made of absorbable biological materials, the round table is arranged at the top of the columnar body, the diameter of the round table is 8-10mm, the height of the round table is 5mm, the diameter of the columnar body is 6-8mm, the height of the columnar body is 30-50mm, micropores are designed on the surface of the intramedullary fixation pile, and the diameter of each micropore is 0.2-0.3 mm;
the annular fixed band adopts can absorb biomaterial and make from locking-type ribbon, including soft band and locking buckle, soft band width is 4mm, long 100mm, thick 0.2mm, is provided with the several micropore on the soft band lateral wall, and soft band tail end is provided with the cockscomb structure arch on the surface, and the locking buckle setting is provided with the cockscomb structure arch on soft band head end on the locking buckle inner wall, and soft band tail end passes the locking buckle, locks through protruding mutual interlock.
The utility model discloses a radius head comminuted fracture pile foundation internal fixation device, fixing method specifically as follows:
1) firstly, cleaning the broken end of the crushed radius head, reaming the marrow cavity of the radius neck, and measuring the diameter of the marrow cavity;
2) placing the crushed head of the radius into an annular fixing band on an operation table by using a desktop reconstruction technology, placing the crushed head of the radius according to the shape of the fractured bone, resetting the fractured bone, tightening a soft binding band, and locking the soft binding band through a locking buckle;
3) taking a plurality of common round bone needles with the diameter of 1.2mm, fixing the bone blocks pairwise from the side surface of the radius head through the circular hole of the annular restorer, and temporarily fixing the radius head;
4) turning over the joint surface on the top surface of the head of the radius on an operation table, determining the rotation center of the head of the radius, and driving a guide pin with the diameter of 1.5mm into the rotation center for later use;
5) after the diameter of the radius head is measured, a columnar hollow polishing head with the shape and the diameter consistent with that of the round table of the intramedullary fixation pile is selected, the inner part of the medullary cavity of the radius head is polished to form a groove after the cylindrical hollow polishing head penetrates through a guide needle which is driven into the rotation center of the radius head, and the round table of the intramedullary fixation pile with a proper size is placed in the radius head;
6) drilling holes in the proper positions of the radius heads by using a Kirschner wire, then driving a plurality of prismatic fixing nails, fixing the radius heads on the intramedullary fixing pile by using the prismatic fixing nails, and fixing the radius heads among all the bone blocks by using the prismatic fixing nails by using the same method; if the inner part of the radius head is accompanied with bone defects, performing bone grafting to form a radius head-intramedullary fixation pile complex;
7) after the fixation is finished, the exposed part of the diamond-shaped fixing nail is cut off, the radius head is fixed in an annular shape by an annular fixing band and is locked, the locking device is positioned in a safe area, the radius head-intramedullary fixing pile complex is placed into an operation cavity, the distal end of the intramedullary fixing pile is inserted into the medullary cavity, and after the head and neck are well reset, the distal end is locked by the locking nail for fixation, so that the operation is finished.
The utility model adopts the design idea of the intramedullary nail at the metaphysis end of the proximal radius to realize the anatomical reconstruction of the comminuted radius capitulum fracture, reduce the operation difficulty and shorten the operation time; the radial head absorbable pile foundation fixing device adopts the pile foundation fixing principle, innovatively introduces the intramedullary fixing technology into the reconstruction of the comminuted fracture of the radial head, adopts intramedullary center fixing, and avoids the defects of limited placing range, fixation failure, unbalanced stress and the like of fixtures generated by extramedullary eccentric fixing of steel plate screws and the like; an absorbable fixing pile foundation is arranged in the cancellous bone of the radius head, a fixing foundation is provided for a fractured cartilage fracture block, multi-nail multi-angle fixing can be provided, and the device is particularly suitable for fixing smaller cartilage fractures and comminuted fractures, and annular fixing bands are additionally arranged on the periphery of the radius head for annular bundling, so that both inside and outside consideration is achieved, and the stability of the fracture block is improved; for severe radius head injury with subchondral collapse and bone defect, the repair can also be realized by matching with a bone grafting technology.
The utility model discloses a radius head comminuted fracture pile foundation internal fixation device, the design is scientific, easy and simple to handle, safe and reliable, carries out the restoration of radius head comminuted fracture from multi-direction multi-angle through intramedullary fixation stake and prismatic staple, annular fixed band, is particularly useful for cracked and thin cartilage fracture piece's reconstruction, can reduce the operation degree of difficulty; effectively avoiding the replacement of the head of the radius at the first stage, saving the medical cost and having positive clinical effect; the absorbable material is adopted, and the absorbable material is left in the body after the operation and is not taken out after the secondary operation; the surface of the intramedullary fixing pile adopts a micropore design, which is beneficial to bone ingrowth and promotes fracture healing.
Drawings
Fig. 1 is a schematic view of the absorbable cartilage nail of the present invention.
Fig. 2 is a schematic view of the structure of the absorbable intramedullary fixation pile of the present invention.
Fig. 3 is a schematic view of the fixing state of the intramedullary fixation pile of the present invention.
FIG. 4 is a schematic view of an annular securing strap configuration.
Fig. 5 is a schematic view of the overall fixing state.
Wherein, the prismatic staple 1, round platform 2, the columnar body 3, soft band 4, locking buckle 5.
Detailed Description
Example 1: the utility model provides a radius bone comminuted fracture pile foundation internal fixation device, its fixed theory is the intramedullary fixed principle of metaphysis fracture, and the device includes prismatic staple 1, intramedullary fixation stake and annular fixed band three part, wherein:
the prismatic fixing nail 1 is made of absorbable biological materials into a prismatic body with an equilateral rhombus section, and the diameters of the prismatic fixing nail are 1.6mm, 2.2mm or 2.7mm respectively;
the intramedullary fixation pile comprises a circular truncated cone 2 and a columnar body 3, and is made of absorbable biological materials, the circular truncated cone 2 is arranged at the top of the columnar body 3, the diameter of the circular truncated cone 2 is 8-10mm, the height of the circular truncated cone 2 is 5mm, the diameter of the columnar body 3 is 6-8mm, the height of the columnar body is 30-50mm, micropores are designed on the surface of the intramedullary fixation pile, and the diameter of the micropores is 0.2-0.3 mm;
annular fixed band adopts can absorb biomaterial and make from locking-type ribbon, including soft band 4 and locking buckle 5, 4 wide 4mm of soft band, long 100mm, thick 0.2mm are provided with the several micropore on 4 lateral walls of soft band, and 4 tail ends of soft band are provided with the serration on the surface, and locking buckle 5 sets up at 4 head ends of soft band, is provided with the serration on 5 inner walls of locking buckle, and 4 tail ends of soft band pass locking buckle 5, through protruding mutual interlock locking.
The pile foundation internal fixation method for radius head comminuted fracture specifically comprises the following steps:
1) firstly, cleaning the broken end of the crushed radius head, reaming the marrow cavity of the radius neck, and measuring the diameter of the marrow cavity;
2) the table top reconstruction technology is applied, the crushed radius head is placed in the annular fixing band on an operation table, the annular fixing band is placed according to the shape of the fractured bone, the fractured bone is reset, the soft binding band 4 is tightened, and the soft binding band 4 is locked through the locking buckle 5;
3) taking a plurality of common round bone needles with the diameter of 1.2mm, fixing the bone blocks pairwise from the side surface of the radius head through the circular hole of the annular restorer, and temporarily fixing the radius head;
4) turning over the joint surface on the top surface of the head of the radius on an operation table, determining the rotation center of the head of the radius, and driving a guide pin with the diameter of 1.5mm into the rotation center for later use;
5) after the diameter of the radius head is measured, a columnar hollow polishing head with the shape and the diameter consistent with that of the round table 2 of the intramedullary fixation pile is selected, the inner part of the medullary cavity of the radius head is polished to form a groove after the cylindrical hollow polishing head penetrates through a guide needle which is driven into the rotation center of the radius head, and the round table 2 of the intramedullary fixation pile with a proper size is placed in the radius head;
6) drilling holes in the proper positions of the radius heads by using a Kirschner wire, then driving a plurality of prismatic fixing nails 1, fixing the radius heads on the intramedullary fixing pile by using the prismatic fixing nails 11, and fixing the bone blocks of each radius head by using the prismatic fixing nails 1 by using the same method; if the inner part of the radius head is accompanied with bone defects, performing bone grafting to form a radius head-intramedullary fixation pile complex;
7) after the fixation is finished, the exposed part of the diamond-shaped fixing nail 11 is cut off, the radius head is fixed in an annular shape by an annular fixing band and is locked, the locking device is positioned in a safe area, the radius head-intramedullary fixing pile complex is placed into an operation cavity, the distal end of the intramedullary fixing pile is inserted into the medullary cavity, and after the head and neck are well reset, the distal end is locked by the locking nail for fixation, so that the operation is finished.
The utility model adopts the design idea of the intramedullary nail at the metaphysis end of the proximal radius to realize the anatomical reconstruction of the comminuted radius capitulum fracture, reduce the operation difficulty and shorten the operation time; the radial head absorbable pile foundation fixing device adopts the pile foundation fixing principle, innovatively introduces the intramedullary fixing technology into the reconstruction of the comminuted fracture of the radial head, adopts intramedullary center fixing, and avoids the defects of limited placing range, fixation failure, unbalanced stress and the like of fixtures generated by extramedullary eccentric fixing of steel plate screws and the like; an absorbable fixing pile foundation is arranged in the cancellous bone of the radius head, a fixing foundation is provided for a fractured cartilage fracture block, multi-nail multi-angle fixing can be provided, and the device is particularly suitable for fixing smaller cartilage fractures and comminuted fractures, and annular fixing bands are additionally arranged on the periphery of the radius head for annular bundling, so that both inside and outside consideration is achieved, and the stability of the fracture block is improved; for severe radius head injury with subchondral collapse and bone defect, the repair can also be realized by matching with a bone grafting technology.
Claims (1)
1. The utility model provides a radius bone comminuted fracture pile foundation internal fixation device, its fixed theory is the intramedullary fixed principle of metaphysis fracture, its characterized in that the device includes prismatic staple (1), intramedullary fixation stake and annular fixed band three part, wherein:
the prismatic fixing nail (1) is made of absorbable biological material into a prismatic body with an equilateral rhombus section, and the diameters of the prismatic fixing nail are 1.6mm, 2.2mm or 2.7mm respectively;
the intramedullary fixation pile comprises a round table (2) and a columnar body (3), and is made of absorbable biological materials, wherein the round table (2) is arranged at the top of the columnar body (3), the diameter of the round table (2) is 8-10mm, the height of the round table is 5mm, the diameter of the columnar body (3) is 6-8mm, the height of the columnar body is 30-50mm, and micropores with the diameter of 0.2-0.3mm are designed on the surface of the intramedullary fixation pile;
annular fixed band adopts can absorb biomaterial and make from locking-type ribbon, including soft band (4) and locking buckle (5), soft band (4) is wide 4mm, long 100mm, thick 0.2mm, be provided with the several micropore on soft band (4) lateral wall, soft band (4) tail end is provided with the cockscomb structure arch on the surface, locking buckle (5) set up at soft band (4) head end, be provided with the cockscomb structure arch on locking buckle (5) inner wall, soft band (4) tail end passes locking buckle (5), through protruding interlock locking each other.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920749258.XU CN210354874U (en) | 2019-05-23 | 2019-05-23 | Pile foundation internal fixing device for radius head comminuted fracture |
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| CN201920749258.XU CN210354874U (en) | 2019-05-23 | 2019-05-23 | Pile foundation internal fixing device for radius head comminuted fracture |
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| CN210354874U true CN210354874U (en) | 2020-04-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110051416A (en) * | 2019-05-23 | 2019-07-26 | 昆明市中医医院 | Caput radii comminuted fracture pile foundation inner fixing device and its fixing means |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110051416A (en) * | 2019-05-23 | 2019-07-26 | 昆明市中医医院 | Caput radii comminuted fracture pile foundation inner fixing device and its fixing means |
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Granted publication date: 20200421 |
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