CN105232129B - A kind of fixation device of patellar fracture - Google Patents
A kind of fixation device of patellar fracture Download PDFInfo
- Publication number
- CN105232129B CN105232129B CN201510747885.6A CN201510747885A CN105232129B CN 105232129 B CN105232129 B CN 105232129B CN 201510747885 A CN201510747885 A CN 201510747885A CN 105232129 B CN105232129 B CN 105232129B
- Authority
- CN
- China
- Prior art keywords
- ribbon part
- hollow screw
- fixation device
- fracture
- patellar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000463 material Substances 0.000 claims abstract description 14
- 208000010392 Bone Fractures Diseases 0.000 claims description 61
- 206010017076 Fracture Diseases 0.000 claims description 61
- 210000004417 patella Anatomy 0.000 claims description 32
- 210000000988 bone and bone Anatomy 0.000 claims description 7
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims description 6
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims description 6
- 208000006670 Multiple fractures Diseases 0.000 claims description 5
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 5
- 229920002530 polyetherether ketone Polymers 0.000 claims description 5
- 239000004705 High-molecular-weight polyethylene Substances 0.000 claims 1
- 238000002513 implantation Methods 0.000 abstract description 8
- 230000000638 stimulation Effects 0.000 abstract description 8
- 238000005553 drilling Methods 0.000 abstract description 6
- 208000004550 Postoperative Pain Diseases 0.000 abstract description 4
- 230000036770 blood supply Effects 0.000 abstract description 4
- 239000007943 implant Substances 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- 208000027418 Wounds and injury Diseases 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 210000003127 knee Anatomy 0.000 description 4
- 210000000629 knee joint Anatomy 0.000 description 4
- 210000000689 upper leg Anatomy 0.000 description 4
- 208000002193 Pain Diseases 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000002980 postoperative effect Effects 0.000 description 3
- 210000003314 quadriceps muscle Anatomy 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 208000024779 Comminuted Fractures Diseases 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 206010003246 arthritis Diseases 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 2
- 238000009954 braiding Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 210000003195 fascia Anatomy 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000017074 necrotic cell death Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- 210000004872 soft tissue Anatomy 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 206010016654 Fibrosis Diseases 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 208000002658 Intra-Articular Fractures Diseases 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920010741 Ultra High Molecular Weight Polyethylene (UHMWPE) Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004761 fibrosis Effects 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 230000008338 local blood flow Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 210000004285 patellofemoral joint Anatomy 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 108010048734 sclerotin Proteins 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
- 210000001364 upper extremity Anatomy 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/683—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin comprising bone transfixation elements, e.g. bolt with a distal cooperating element such as a nut
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/685—Elements to be fitted on the end of screws or wires, e.g. protective caps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/686—Plugs, i.e. elements forming interface between bone hole and implant or fastener, e.g. screw
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/82—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin for bone cerclage
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/04—Macromolecular materials
- A61L31/048—Macromolecular materials obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/04—Macromolecular materials
- A61L31/06—Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Medical Informatics (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Neurology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vascular Medicine (AREA)
- Epidemiology (AREA)
- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a kind of fixation device of patellar fracture, including ribbon part and hollow screw, ribbon part is connected with pull needle at least one end；Hollow screw setting is at the patellar fracture in preset drilling, and in the centre bore that ribbon part is threaded through hollow screw under the drive of pull needle, and ribbon part is pressed at patellar fracture in staggered form.The present invention has excellent biocompatibility, avoids stimulation of the implantation material to implant site, solves the problems, such as that implantation material needs second operation to take out；Ribbon part has lower elasticity modulus, bolt portion has the characteristic of dynamic pressurization, and while providing efficiently fixed, the effective protection blood supply of fixed position reduces the postoperative pain of patient, shortens the recovery period of patient；Ribbon part provides effective fixed form for slight comminuted patellar.
Description
Technical field
The present invention relates to Design for Medical Device technical fields, and in particular to a kind of fixation device of patellar fracture.
Background technique
Kneecap is the maximum sub- bone of human body, is located in front of knee joint, has and protects kneed effect.The subsequent pass of kneecap
Nodal section is opposite with femoral bone pulley face.Quadriceps muscle of thigh is attached to kneecap upper limb, and part fascia is through extending for ligamentum patellae in front of kneecap, only
In tibial tubercle.Kneecap plays a crucial role in human knee moves, for example, the intermediate knot as Quadriceps mechanism
Structure, the pulling force that quadriceps muscle of thigh generates is transmitted to kneecap tendon by it；Kneecap plays leverage when stretching knee, can effectively increase and stretch knee dress
Set the lever arm of force that axis point is bent and stretched for knee joint；By sliding of the kneecap on femoral bone pulley face, a strand four-head can also be cut down
Flesh is to the friction before distal part of femur.
Patellar fracture is clinical common intra-articular fracture, and incidence accounts for about the 1% of each position fracture of whole body.Kneecap bone
Folding is often acutely shunk by direct external force or quadriceps muscle of thigh suddenly to be caused, and will cause knee joint equipment asynechia after fracture
It lacks of proper care with potential patellofemoral joint.
When patellar fracture operative treatment, need to be resistant to the interior fixation of high-tension.The traditional fixing means of patellar fracture is gram
Family name's needle tension band method.Steel wire is placed in kneecap tension side, is allowed to when bearing function shape load, due to shrinkage factors such as muscle,
Steel wire can generate axial pressure between shaft end, not generate rotary force, be conducive to the steady of interior fixation effectively tension conversion at power
It is qualitative.Two Kirschner wires are located at the center of sclerotin, play the role of preventing rotation and angulation.AO school is to tension band wiring skill
Art is improved, and hollow nail tension band method has been createed, and so that operation is met " AO principle ", is increasingly becoming clinical treatment kneecap
The classical way of fracture.
But there are some clinical shortcomings for hollow nail tension band method: first is that hollow nail stimulation surrounding soft tissue generates pain,
Hollow nail fracture loosens, and the stimulation at postoperative bird caging position causes patient uncomfortable；Second is that surgical procedure is complicated, wound is larger,
Second operation is needed to take out interior fixed；Third is that in linear fixing belt and kneecap contact site unit area receiving pressure it is larger cause it is soft
Tissue meeting necrosis, absorbs, fibrosis liquefaction, loosens tension band wire, fourth is that being difficult to fix for smashing fracture.
To sum up, it needs to find a kind of novel operation device and its application method for treating patellar fracture, it can be simple high
Effect ground restores the continuity of kneecap and the planarization of articular surface, and preventing injuries property arthritis repairs aponeurosis, to restore knee joint
Stretch movement and maintenance function.
Summary of the invention
The present invention provides a kind of fixation device of patellar fracture, including ribbon part and hollow screw, the bands
It is connected with hollow screw described in pull needle on shape knitted parts at least one end, the multiple fracture portions of connection is set at patellar fracture,
The ribbon part is threaded through in the centre bore of the hollow screw under the drive of the pull needle, and the band-like volume
Part is knitted to be pressed at patellar fracture in staggered form.
Preferably, the ribbon part is woven using ultrahigh molecular weight polyethylene yarn.
Preferably, the ribbon part with a thickness of 0.19~0.21mm, width is 2.5~4.5mm.
Preferably, the maximum anti-pressure ability of the ribbon part is more than or equal to 60 ± 10MPa, the ribbon portion
The elongation at break divided is 20%~30%.
Preferably, the ribbon part connects the pull needle by connecting line, the connecting line is using superelevation
Suture made of molecular weight polyethylene braiding.
Preferably, the bonding strength between the connecting line and the pull needle, the ribbon part is more than or equal to
80N。
Preferably, the hollow screw is made using polyetheretherketonematerials materials.
Preferably, the end of the head end of the hollow screw is reserved with non-threaded mouth.
Preferably, being arranged to the structure that section is hexagon on the end of the tail end of the hollow screw.
Preferably, the breaking strength of the hollow screw is more than or equal to 90Mpa.
Preferably, not being completely provided with thread segment on the hollow screw lateral surface；The hollow screw is placed in fracture
The multiple fracture portions of connection in kneecap, and the thread segment is not provided on the hollow screw at least one fracture portions.
Preferably, the fixed device, which includes at least, two hollow screws, two hollow screws are perpendicular to fracture
Face is placed in patellar fracture opposite side, and two hollow screws are parallel to each other.
Preferably, arranging after the ribbon partially passes through two hollow screws in " 8 " font.
The present invention due to using the technology described above, is allowed to compared with prior art, have the following advantages that and actively imitate
Fruit:
The fixation device of patellar fracture provided by the invention is guidance with " BO principle ", made of using polyether-ether-ketone
Hollow screw and one using ultrahigh molecular weight polyethylene at ribbon part be composed；The present invention has excellent life
Object compatibility avoids stimulation of the implantation material to implant site, solves the problems, such as that implantation material needs second operation to take out；Band-like volume
Knitting part has lower elasticity modulus, and bolt portion is designed using half-thread, while offer kneecap is efficiently fixed, power
The fixed form effective protection of the pressurization blood supply of fixed position, reduces the postoperative pain of patient, shortens the rehabilitation of patient
Period；Ribbon part is also capable of providing effective fixed form for slight comminuted patellar；In addition, of the invention
" minimally invasive " theory of introducing, solves that previous procedure is complicated for operation, and wound is big, postoperative patient pain, the problems such as local stimulation is serious.
Detailed description of the invention
In conjunction with attached drawing, by hereafter state detailed description, can be more clearly understood that above-mentioned and other feature of the invention and
Advantage, in which:
Fig. 1 is the structural schematic diagram of ribbon part and pull needle in the present invention；
Fig. 2 is the structural schematic diagram of cored screw in the present invention；
Fig. 3 is the schematic diagram of the kneecap of the fixed fracture of fixed device provided by the invention.
Symbol description:
1- kneecap
2- ribbon part
3- pull needle
4- hollow screw
The non-threaded mouth of 41-
42- hexagonal structure
5- connecting line.
Specific embodiment
Referring to the attached drawing for showing the embodiment of the present invention, the present invention is described in more detail.However, the present invention can be with
Many different forms are realized, and should not be construed as being limited by the embodiment herein proposed.On the contrary, proposing that these embodiments are
In order to reach abundant and complete disclosure, and those skilled in the art is made to understand the scope of the present invention completely.These are attached
In figure, for clarity, the size and relative size in layer and region may be exaggerated.
Referring to Fig.1-3, the present invention provides a kind of fixation devices of patellar fracture, include ribbon part 2 and sky
Heart screw 4, hollow screw 4 are arranged in the drilling reserved at patellar fracture, tentatively connect the kneecap fractured；Ribbon portion
Divide 2 to be threaded through in the centre bore of hollow screw 4, and ribbon part 2 is pressed at patellar fracture in staggered form, band-like volume
It knits part 2 and plays the fixed effect of tightening.The present invention can simply and efficiently restore kneecap continuity and articular surface it is smooth
Property, preventing injuries property arthritis repairs aponeurosis, stretches movement and maintenance function to restore kneed.
Specifically, ribbon part 2 is woven using ultra-high molecular weight polyethylene (UHMWPE) yarn, to make
It is taken out after the implantation of ribbon part without second operation, reduces the generation of side reaction, while the strength of materials is higher；It is specific to compile
It knits Shi Kexian and yarn is woven into tubular, then warp loom pressing is shaped into banded structure, the braiding of certain ribbon part 2
Mode is not limited thereto, herein with no restriction；Several equally distributed mesh are formed on woven ribbon part 2,
The shape of mesh can be square, rectangle etc., herein with no restriction.
The thickness of ribbon part 2 is preferably 0.19~0.21mm, and ribbon part 2 can not be too thick, prevents
Protrusion is formed after operation, can not be too thin to guarantee the planarization of articular surface, to guarantee the intensity of ribbon part 2.Band
The width of shape knitted parts 2 be preferably width be 2.5~4.5mm, the choosing value of width specifically can according to the size of kneecap come
It determines, it is for selection to be usually provided with tri- specifications of 3.0mm, 3.5mm and 4.0mm.The length of ribbon part 2 can be according to tool
Body situation is set, and is usually arranged as 30cm.
Above-mentioned each size about ribbon part 2, does not make the setting of occurrence, according to tool in the present invention
While body situation is set, it need to guarantee that the maximum tensile strength of ribbon part 2 is not less than 60 ± 10MPa, it is band-like to guarantee
Knitted parts can effectively fix the kneecap of fracture, keep its not easy to break；In addition, must also guarantee the disconnected of ribbon part 2
Elongation is split not less than 20%；The elongation at break of ribbon part 2 can not be too big, and too big meeting is so that ribbon part
2 there is loose phenomenon after prolonged use, and the elongation at break of ribbon part 2 can not be too small, too small to make
It obtains ribbon part kneecap is caused to oppress, leads to problems such as blood circulation unsmooth, the fracture of preferred ribbon part 2
The range of elongation is 20%~30%.
The present invention replaces wire in the prior art etc., ribbon part 2 flexible by ribbon part 2
The area for contacting fixed part with kneecap 1 is increased, the pressure that contact fixed part unit area is born is reduced, protects
It is fixed the local blood circulation of portion of tissue, avoids the generation of tissue necrosis；Meanwhile flexible tape knitted parts 2 have low bullet
Property modulus, there is certain micro- bullet self-lock ability so that fixation is more secured, while providing efficiently fixed, effective protection
The blood supply of fixed position, reduces the postoperative pain of patient, shortens the recovery period of patient.In addition, ribbon part 2
For slight comminuted patellar, it is also capable of providing effective fixation.
In the present embodiment, pull needle 3 is at least connected in the both ends of ribbon part 2 on one end, pull needle 3 is for drawing
Conduction band shape knitted parts 2 pass through the centre bore of hollow screw 4；Ribbon part 2 can only have one end to be provided with pull needle 3, excellent
The both ends of choosing are provided with pull needle 3, quickly finish connecting for ribbon part 2 so as to more convenient in surgical procedure.
Pull needle 3 is preferably the eyeless suture needle being process using 304 stainless steels, the long 15cm of needle, diameter
1.0mm；Certainly, the material of pull needle 3 and size are not limited thereto, and can be selected as the case may be.Pull needle 3
It is attached by connecting line 5 and ribbon part 2, connecting line 5 is the seam made of ultra-high molecular weight polyethylene weaves
Zygonema, length are 3cm or so.Connecting line 5 is attached by the modes and ribbon part 2 such as suturing, bundling, and is connected strong
Degree is not less than 80N, to guarantee the fastness of connection；Pull needle 3 and connecting line 5 can be connected to one by modes such as mechanical press
It rises, and bonding strength is not less than 80N, to guarantee the fastness of connection.
In the present embodiment, fixed device includes that there are two hollow screws 4, and two hollow screws 4 are perpendicular to the merging of fracture face
Fracture opposite side, and two hollow screws 4 are parallel to each other, it is specific as shown in Figure 3；If comminuted fracture, hollow screw 4 can connect
It is connected on larger sclerite.
Wherein, hollow screw 4 is made using polyetheretherketonematerials materials (PEEK material), the hollow screw 4 of PEEK material
It is excellent with the bio-compatible performance of the ribbon part 2 of UHMWPE material, second operation taking-up is not required to after implantation, and significantly
Reduce the generation of many side reactions such as pessimal stimulation and inflammation.The diameter of hollow screw 4 can be 4mm, length can for 40mm,
The plurality of specifications such as 45mm, 50mm, 55mm, 60mm；Each size of hollow screw 4 can be set according to concrete condition, this
Place is with no restriction；The breaking strength of hollow screw 4 is not less than 90Mpa, to guarantee the fixing intensity of hollow screw 4.
Hollow screw 4 is placed on kneecap 1 in preset drilling, due to being provided with thread segment on the head end of hollow screw 4, directly
Diameter is relatively large, while the head end of hollow screw 4 stretches out kneecap and foreign body sensation occurs in order to prevent, therefore needs in the prior art
Expanding treatment is carried out to the both ends of drilling, certainly will cause the kneecap bone wall of drilling end relatively thin in this way, slight crack etc. easily occur and ask
Topic；In addition, since 4 diameter of hollow screw is smaller, for also will appear spiral shell on the inner sidewall of hollow screw centre bore at thread segment
Line causes abrasion or screw head to crack because wall thickness is relatively thin on belt.
As shown in Figure 2, by being reserved with non-threaded mouth 41 in the end of 3 head end of hollow screw in the present invention,
Reduce its head end end diameter, so that in the case where not needing to carry out drilling end flaring or smaller reaming,
Enable to the end of hollow screw 4 lower than bone face；And on the inner sidewall of non-threaded mouth 41 be not in screw thread, subtract
The friction of ribbon part 2 Yu screw thread is lacked.
It is also provided with into the hexagonal structure 42 that section is hexagon on the end of the tail end of hollow screw 4, makes its tail end end
Portion's diameter reduces, on the one hand convenient mating with general spiral shell vertebra for installing hollow screw, on the other hand guarantees hollow screw 4
Tail portion is lower than bone face.
In the present embodiment, it is not completely provided with thread segment on hollow screw 4, when in the kneecap that hollow screw is placed in fracture
Multiple fracture portions are connected, and are not provided with thread segment on the hollow screw 4 at least one fracture portions；So that fixed
Good kneecap section can have slight activity, play the role of dynamic pressurization, be conducive to the healing of kneecap section.Wherein screw thread
Section may be provided at may also be arranged on by the tail end side of hollow screw 4, herein with no restriction by the head end side of hollow screw.
Such as shown in Fig. 3, kneecap is broken into two fracture portions up and down, and hollow screw 4 is perpendicular to two fracture of end face connection
Part, wherein thread segment is provided on the hollow screw 4 being located in the fracture portions of lower end, in the fracture portions of upper end
Thread segment is not provided on hollow screw 4；After two fracture portions connect, the movement that upper end fracture portions can be slight, so that
Activity that can be slight between upper end fracture portions and the end face of lower fracture part.
The present invention is guidance with " BO principle ", a kind of operation device of novel treatment patellar fracture is developed, by using
Hollow screw made of polyether-ether-ketone and one using ultrahigh molecular weight polyethylene at ribbon part be composed；This
Invention has excellent biocompatibility, avoids stimulation of the implantation material to implant site, solving implantation material needs second operation to take
Problem out；Ribbon part has lower elasticity modulus, and the design of bolt portion half-thread dynamic pressurization is providing kneecap
While efficiently fixed, the effective protection blood supply of fixed position reduces the postoperative pain of patient, shortens the rehabilitation of patient
Period；Ribbon part is also capable of providing effective fixed form for slight comminuted patellar；In addition, of the invention
" minimally invasive " theory of introducing, solves that previous procedure is complicated for operation, and wound is big, postoperative patient pain, the problems such as local stimulation is serious.
Usage mode with regard to the fixation device of patellar fracture provided by the invention during surgery below is made further
It is bright:
One is cut before knee and is about the vertical shape of 6cm or arc transverse incision incision skin, and flap is separated between deep fascia and ligamentum patellae,
Appear patellar fracture position, protects ligamentum patellae enlarged portion；
Physiological saline cleans the extravasated blood in articular cavity, fracture anatomical reduction, and is fixed temporarily；
With two pieces of Kirschner wires vertically fracture face in parallel be placed in fracture opposite side, select the core drill of suitable diameter (generally
3.0 mm) it covers and drills on Kirschner wire, if comminuted fracture, then drill on main larger sclerite, duct spacing root
It is selected according to the actual conditions of fracture, but two pieces of screw basis equalization principles in stress distribution should be followed, make its generally phase
It is mutually parallel；
Again with 4.0 mm tap tappings, it is placed in the hollow screw 4 of respective diameters and length, and makes to follow closely tail and ailhead both ends
It is below bone face.
Pull needle introduces the ribbon part of appropriate model by hollow screw, and preferred ribbon part is in " 8 "
Arrangement, and fixed in the tightening of hollow screw one end, knotting.
Because of those skilled in the art it should be understood that the present invention can be implemented without departing from many other concrete forms
The spirit or scope of itself.Although case study on implementation of the invention has been described, it should be understood that the present invention should not be limited to these realities
Example is applied, those skilled in the art can make change within the spirit and scope of the present invention as defined by the following claims
Change and modifies.
Claims (12)
1. a kind of fixation device of patellar fracture, including ribbon part and hollow screw, the ribbon part is at least
Pull needle is connected on one end；The hollow screw, which is arranged at patellar fracture, connects multiple fracture portions, the ribbon
Part is threaded through in the centre bore of the hollow screw under the drive of the pull needle, and the ribbon part is in intersection
Formula is pressed at patellar fracture；It is characterized in that,
The end of the head end of the hollow screw is reserved with non-threaded mouth；It is set on the end of the tail end of the hollow screw
It is set to the structure that section is hexagon, so that the tail end end diameter of the hollow screw reduces.
2. the fixation device of patellar fracture according to claim 1, which is characterized in that the ribbon part is using super
High molecular weight polyethylene yarn weaves.
3. the fixation device of patellar fracture according to claim 1, which is characterized in that the thickness of the ribbon part
For 0.19~0.21mm, width is 2.5~4.5mm.
4. the fixation device of patellar fracture according to claim 1, which is characterized in that the maximum of the ribbon part
Anti-pressure ability is more than or equal to pressure value 50MPa, and the elongation at break of the ribbon part is 20%~30%.
5. the fixation device of patellar fracture according to claim 1, which is characterized in that the maximum of the ribbon part
Anti-pressure ability is more than or equal to pressure value 70MPa, and the elongation at break of the ribbon part is 20%~30%.
6. the fixation device of patellar fracture according to claim 1, which is characterized in that the ribbon part passes through company
Wiring connects the pull needle, and the connecting line is the suture made of ultra-high molecular weight polyethylene weaves.
7. the fixation device of patellar fracture according to claim 6, which is characterized in that the connecting line and the traction
Bonding strength between needle, the ribbon part is more than or equal to 80N.
8. the fixation device of patellar fracture according to claim 1 or 2, which is characterized in that the hollow screw is using poly-
Ether ether ketone material is made.
9. the fixation device of patellar fracture according to claim 1, which is characterized in that the breaking strength of the hollow screw
More than or equal to 90Mpa.
10. the fixation device of patellar fracture according to claim 1, which is characterized in that on the hollow screw lateral surface
It is not completely provided with thread segment；The hollow screw is placed in the multiple fracture portions of connection in the kneecap of fracture, and at least one bone
The thread segment is not provided on hollow screw in folding part point.
11. the fixation device of patellar fracture according to claim 1, which is characterized in that the fixed device includes at least
There are two hollow screws, two hollow screws are placed in patellar fracture opposite side, and two hollow spiral shells perpendicular to fracture face
Nail is parallel to each other.
12. the fixation device of patellar fracture according to claim 11, which is characterized in that the ribbon partially passes through
After two hollow screws, arrange in " 8 " font.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510747885.6A CN105232129B (en) | 2015-11-06 | 2015-11-06 | A kind of fixation device of patellar fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510747885.6A CN105232129B (en) | 2015-11-06 | 2015-11-06 | A kind of fixation device of patellar fracture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105232129A CN105232129A (en) | 2016-01-13 |
| CN105232129B true CN105232129B (en) | 2019-03-19 |
Family
ID=55030153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510747885.6A Active CN105232129B (en) | 2015-11-06 | 2015-11-06 | A kind of fixation device of patellar fracture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105232129B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110960306A (en) * | 2018-09-29 | 2020-04-07 | 丁伟 | Patella fracture packing and fixing device |
| CN112869858A (en) * | 2021-01-13 | 2021-06-01 | 赵瑞霞 | Degradable shape memory rib internal fixation body |
| CN114376701B (en) * | 2021-12-21 | 2023-02-14 | 长春圣博玛生物材料有限公司 | High-strength screw |
| WO2023173887A1 (en) * | 2022-03-17 | 2023-09-21 | 航天中心医院 | Patella fracture hollow screw-cable locking system |
| CN114767329B (en) * | 2022-06-21 | 2022-08-30 | 北京天星博迈迪医疗器械有限公司 | Knee joint cruciate ligament repair fixing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101810508A (en) * | 2009-02-24 | 2010-08-25 | 曲光 | Fastening system in KG combined tension belt |
| CN102579125A (en) * | 2012-03-05 | 2012-07-18 | 中国人民解放军第二军医大学 | Fracture internal-fixation anti-looseness hollow compression screw |
| CN102579119A (en) * | 2012-02-15 | 2012-07-18 | 上海市第十人民医院 | Pressurization needle cable fixed system for patella fracture and application thereof |
| CN102657552A (en) * | 2012-06-05 | 2012-09-12 | 叶立民 | Inhaul cable pressurizing cylinder sleeve and pressurization fixing device for patellar fracture |
| CN205094565U (en) * | 2015-11-06 | 2016-03-23 | 上海凯利泰医疗科技股份有限公司 | Fixing device of kneecap fracture |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000059389A1 (en) * | 1999-04-02 | 2000-10-12 | Osteotech, Inc. | Surgical bone screw |
| CN203988326U (en) * | 2014-07-10 | 2014-12-10 | 苏州吉美瑞医疗器械有限公司 | A kind of hollow forcing screw |
-
2015
- 2015-11-06 CN CN201510747885.6A patent/CN105232129B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101810508A (en) * | 2009-02-24 | 2010-08-25 | 曲光 | Fastening system in KG combined tension belt |
| CN102579119A (en) * | 2012-02-15 | 2012-07-18 | 上海市第十人民医院 | Pressurization needle cable fixed system for patella fracture and application thereof |
| CN102579125A (en) * | 2012-03-05 | 2012-07-18 | 中国人民解放军第二军医大学 | Fracture internal-fixation anti-looseness hollow compression screw |
| CN102657552A (en) * | 2012-06-05 | 2012-09-12 | 叶立民 | Inhaul cable pressurizing cylinder sleeve and pressurization fixing device for patellar fracture |
| CN205094565U (en) * | 2015-11-06 | 2016-03-23 | 上海凯利泰医疗科技股份有限公司 | Fixing device of kneecap fracture |
Non-Patent Citations (1)
| Title |
|---|
| 《髌骨针和FiberWire编织缝线张力带联合固定治疗髌骨骨折》;黄奎 等;《中国组织工程研究》;20131022;第17卷(第43期);7559-7564 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105232129A (en) | 2016-01-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11896475B2 (en) | Implant having adjustable filament coils | |
| CN105232129B (en) | A kind of fixation device of patellar fracture | |
| US10898178B2 (en) | Implant having adjustable filament coils | |
| CN105193484B (en) | A kind of integrated fixing device of olecranal fracture | |
| WO2015131725A1 (en) | Ligament reconstruction system | |
| KR20150128684A (en) | Composite interference screws and drivers | |
| CN205094565U (en) | Fixing device of kneecap fracture | |
| US20180153601A1 (en) | Surgical procedure | |
| CN117958883B (en) | Joint ligament full suture repair assembly | |
| US9808236B2 (en) | Internal joint bracing system and suture anchoring assembly therefore | |
| WO2001052773A1 (en) | Ligament reinforcing material | |
| CN214907946U (en) | Medical binding needle and line | |
| CN205072999U (en) | Olecranal fracture integration fixing device | |
| CN105125319B (en) | The fixing device and using method of one volume reconstruction of ACL and front lateral ligament | |
| US20200214828A1 (en) | Bone Anchor and Related Devices, Systems, and Methods | |
| CN206303961U (en) | Pole bone fracture internal fixing device under comminuted kneecap | |
| CN107028684B (en) | The direct Suspending fixation device of soft material tissue grafts | |
| CN216365433U (en) | Support with shell fragment | |
| CN217390839U (en) | Anchor tab device for fixing patella fracture | |
| Erol et al. | Spiral-shaped metallic implant in the treatment of Achilles tendon ruptures: an experimental study on the Achilles tendon of sheep | |
| RU2655446C1 (en) | Method of plasty of the anterior cruciate ligament | |
| CN112716588A (en) | Medical binding needle and line | |
| WO2014053800A1 (en) | Method for conducting a meniscal repair and an apparatus for conducting the same | |
| CN114948160A (en) | Internal fixing system with bionic mechanical property and X-ray inspection friendliness and manufacturing method thereof | |
| CN107157565A (en) | A kind of steel plate of tension band for patellar fracture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 201201 Shanghai Pudong New Area Zhangjiang hi tech Park East area 528, 23, 2 floor. Applicant after: SHANGHAI KINETIC MEDICAL Co.,Ltd. Address before: 201201 Shanghai Pudong New Area Zhangjiang hi tech Park East area 528, 23, 1 floor. Applicant before: SHANGHAI KINETIC MEDICAL Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240715 Address after: 215625 East District, Jinfeng Industrial Park, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee after: JIANGSU IDEAL MEDICAL SCIENCE & TECHNOLOGY CO.,LTD. Country or region after: China Address before: 201201 Shanghai Pudong New Area Zhangjiang hi tech Park East area 528, 23, 2 floor. Patentee before: SHANGHAI KINETIC MEDICAL Co.,Ltd. Country or region before: China |