CN203555861U - Antibiotic bone cement knee joint movable spacer with medicine - Google Patents
Antibiotic bone cement knee joint movable spacer with medicine Download PDFInfo
- Publication number
- CN203555861U CN203555861U CN201320575825.7U CN201320575825U CN203555861U CN 203555861 U CN203555861 U CN 203555861U CN 201320575825 U CN201320575825 U CN 201320575825U CN 203555861 U CN203555861 U CN 203555861U
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- Prior art keywords
- femoral
- antibiotic
- tibial component
- bone cement
- medicine
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- Expired - Lifetime
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- 230000003115 biocidal effect Effects 0.000 title claims abstract description 33
- 239000002639 bone cement Substances 0.000 title claims abstract description 30
- 239000003814 drug Substances 0.000 title claims abstract description 29
- 210000000629 knee joint Anatomy 0.000 title claims abstract description 24
- 125000006850 spacer group Chemical group 0.000 title abstract 2
- 210000000689 upper leg Anatomy 0.000 claims abstract description 9
- 210000002303 tibia Anatomy 0.000 claims abstract description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 8
- 230000000994 depressogenic effect Effects 0.000 claims description 8
- 239000010936 titanium Substances 0.000 claims description 8
- 229910052719 titanium Inorganic materials 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 3
- 208000015181 infectious disease Diseases 0.000 abstract description 9
- 206010062575 Muscle contracture Diseases 0.000 abstract description 3
- 210000000988 bone and bone Anatomy 0.000 abstract description 3
- 208000006111 contracture Diseases 0.000 abstract description 3
- 210000000281 joint capsule Anatomy 0.000 abstract description 3
- 210000003041 ligament Anatomy 0.000 abstract description 3
- 239000003242 anti bacterial agent Substances 0.000 abstract description 2
- 230000009916 joint effect Effects 0.000 abstract 2
- 231100000241 scar Toxicity 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 239000007943 implant Substances 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 210000003414 extremity Anatomy 0.000 description 3
- 238000013150 knee replacement Methods 0.000 description 3
- 230000001225 therapeutic effect Effects 0.000 description 3
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 230000002924 anti-infective effect Effects 0.000 description 2
- 238000001804 debridement Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 206010065687 Bone loss Diseases 0.000 description 1
- 206010067268 Post procedural infection Diseases 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000002266 amputation Methods 0.000 description 1
- 208000037873 arthrodesis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000589 cicatrix Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 210000000003 hoof Anatomy 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 206010025482 malaise Diseases 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 201000008482 osteoarthritis Diseases 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 230000035899 viability Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/38—Joints for elbows or knees
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30667—Features concerning an interaction with the environment or a particular use of the prosthesis
- A61F2002/30672—Features concerning an interaction with the environment or a particular use of the prosthesis temporary
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00353—Bone cement, e.g. polymethylmethacrylate or PMMA
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Physical Education & Sports Medicine (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The utility model relates to a medicine articular technical field, more specifically relates to an antibiotic bone cement knee joint activity type interval body with medicine. The movable spacer with medicine for knee joint with antibiotic bone cement includes femur component and tibia component connected together in joint mode, and the tibia component has slot for storing slow-releasing antibiotic medicine. The utility model discloses patient can keep suitable joint activity during the interval, scar, the ligament shortens around the joint, joint capsule contracture and bone wearing and tearing that produce during the reduction interval, for keep suitable joint space before implanting new artifical knee joint once more to can strengthen the treatment of control infection, very big improvement patient's quality of life.
Description
Technical field
This utility model relates to the technical field in medical joint, more specifically, relates to a kind of antibiotic-loaded bone cement knee joint active type interval body with medicine.
Background technology
Prosthetic replacement is the effective means of the osteoarthrosis illness in whole latter stage for the treatment of at present, wherein hip, knee prosthesis have become the routine operation of American-European countries, although China's starting is late, but development rapidly, because the old people of China is populous, in addition along with the raising of living standards of the people, the requirement of quality of life is also improved gradually, the quantity of total knee replacement, especially total knee replacement is at China's rapid development.
Infection is the calamitous complication after artificial knee joint replacement, and sickness rate is 3~50%.Once infect, occur, its treatment is stubborn problem very, deals with improperly, will face the consequence of amputation, even if infect controlledly, the function of suffering limb is often also seriously damaged, and not only has a strong impact on patient's quality of life, and loss is economically huge.
Current the second stage of joint overhaul technology is considered to the first-selected means of total knee replacement postoperative infection, be that first operation removes all implants, thoroughly after debridement, with being added with antibiotic bone cement piece, be filled in joint space temporarily, postoperative row anti-infective therapy, through certain intervals after date, infect completely and control, while performing the operation for the second time, implant again new prosthese.The advantage of this method has: guarantee to implant new prosthese after infection control again, can avoid occurring neo-implanted prosthese subinfection again, and antibiotic-loaded bone cement can slowly discharge antibiotic, remain on the antibiotic of the interior high concentration of initial a couple of days articular cavity, be conducive to the healing rehabilitation of soft tissue, strengthen anti-infective ability and alleviating pain to a certain degree.Bibliographical information infection control and save limbs can success rate approach 90%.But the antibiotic-loaded bone cement piece implant of this interim making can cause interval, arthrodesis is stiff, long-term fixing will causing stretches that knee joint device shortens, ligament shortens and joint capsule contracture around, in addition the long-term and osseous tissue friction of bone cement implant causes bone loss, finally can increase the difficulty of operation for the second time, even likely cause performing the operation for the second time, patient is caused to CR Critical economic loss, on body and mind, be also great misery, medical personnel formed to very large pressure simultaneously.
Summary of the invention
This utility model is the number of drawbacks overcoming described in above-mentioned prior art; a kind of antibiotic-loaded bone cement knee joint active type interval body with medicine is provided; it passes through moulding by antibiotic-loaded bone cement; simulate artificial joint shape, realize the normal activity of prosthese interim suffering limb, retain patient's autonomous viability; in the default draw-in groove of interval body, add slow release antibiotic simultaneously; reach the object of infection control as early as possible, shorten interval, so that row operation for the second time as early as possible.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of antibiotic-loaded bone cement knee joint active type interval body with medicine, comprise femoral and tibial component, between femoral and tibial component, with articulated manner, connect, wherein, in described tibial component, be provided with the draw-in groove of storing slow release antibiotic medicine.Femoral and tibial component are all that improve on basis according to the principle of full condyle type artificial knee joint, and size is take state's human knee joint parameter as reference, to guarantee to be applicable to all patients.The material of femoral and tibial component is antibiotic-loaded bone cement.
Further, described draw-in groove surface is provided with filter screen, and preferred, filter screen is titanium filter screen.The surface of draw-in groove is titanium filter screen, guarantees that medicine effectively slowly discharges.Titanium is a kind of important structural metal growing up the 1950's, and because having, intensity is high, corrosion resistance good, thermostability high is widely used in every field for titanium alloy.Many countries all recognize the importance of titanium alloy material in the world, in succession it are researched and developed, and are applied.In this programme, use titanium filter screen can play corrosion proof effect, the structure of whole interval body is more stable, guarantees that medicine effectively slowly discharges, and can strengthen the therapeutic effect of infection control.
Further, described tibial component is provided with depressed part, and draw-in groove is located in depressed part.Because the fit structure between femoral and tibial component is commonly used, and draw-in groove is located in depressed part, can additionally not increase the parts of tibial component, only need to be provided with filter screen on draw-in groove surface, can play and store slow release antibiotic medicine and the effectively slowly effect of release of medicine, it is simple in structure, easy to use.
Concrete, described femoral comprise be located at top femoral concave-arc part, be located at the femoral convex arc section of bottom; Described tibial component comprises tibial component concave-arc part, and femoral concave-arc part and femur are connected, and femoral convex arc section and tibial component concave-arc part are connected.The shape of femur bottom and the shape of femoral concave-arc part are suitable, femoral is fixed on femur bottom by bone cement, the shape and size of femoral convex arc section and tibial component concave-arc part are suitable, between femoral and tibial component, with joint, interconnect to provide joint motion.
Described femoral also comprises the hollow bulb of being located at femoral middle part, and described tibial component also comprises the lobe of being located at tibial component top, and lobe stretches in hollow bulb.During joint motion, owing to being provided with hollow bulb and lobe, femoral can relatively rotate in tibial component, and both interconnect to provide joint motion with joint.
Described tibial component also comprises the base plane of being located at bottom, and base plane is connected with tibia.Tibial component is fixed on the top of tibia by bone cement.
Compared with prior art, beneficial effect is: this utility model can keep suitable joint motion interim patient, reduce cicatrix, the shortening of periarticular ligament, joint capsule contracture and bone wearing and tearing that interim produces, before again implanting new artificial knee joint, keep suitable joint space, and can strengthen the therapeutic effect of infection control, improve greatly patient's quality of life.
Accompanying drawing explanation
Fig. 1 is this utility model femoral entirety perspective view.
Fig. 2 is this utility model tibial component entirety perspective view.
Fig. 3 is that this utility model femoral coordinates schematic diagram with tibial component.
The specific embodiment
Accompanying drawing, only for exemplary illustration, can not be interpreted as the restriction to this patent; For better explanation the present embodiment, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product; To those skilled in the art, in accompanying drawing some known configurations and explanation thereof may to omit be understandable.
As Figure 1-3, with an antibiotic-loaded bone cement knee joint active type interval body for medicine, comprise femoral 1 and tibial component 2, between femoral 1 and tibial component 2, with articulated manner, connect, wherein, in tibial component 2, be provided with the draw-in groove 3 of storing slow release antibiotic medicine.In the present embodiment, femoral 1 and tibial component 2 are all that improve on basis according to the principle of full condyle type artificial knee joint, size is take state's human knee joint parameter as reference, and to guarantee being applicable to all patients, the material of femoral 1 and tibial component 2 is antibiotic-loaded bone cement.
In Fig. 2, draw-in groove 3 surfaces are provided with filter screen, and preferred, filter screen is titanium filter screen.The surface of draw-in groove 3 is titanium filter screen, guarantees that medicine effectively slowly discharges.In the present embodiment, use titanium filter screen can play corrosion proof effect, the structure of whole interval body is more stable, guarantees that medicine effectively slowly discharges, and can strengthen the therapeutic effect of infection control.Tibial component 2 is provided with depressed part 24, and draw-in groove 3 is located in depressed part 24.Because the fit structure between femoral and tibial component is commonly used, and draw-in groove 3 is located in depressed part 24, can additionally not increase the parts of tibial component, only need to be provided with filter screen on draw-in groove 3 surfaces, can play and store slow release antibiotic medicine and the effectively slowly effect of release of medicine, it is simple in structure, easy to use.
In Fig. 1-3, femoral 1 comprise be located at top femoral concave-arc part 11, be located at the femoral convex arc section 13 of bottom; Tibial component 2 comprises tibial component concave-arc part 21, and femoral concave-arc part 13 is connected with femur 4, and femoral convex arc section 13 is connected with tibial component concave-arc part 21.The shape of femur 4 bottoms and the shape of femoral concave-arc part 11 are suitable, femoral 1 is fixed on femur 4 bottoms by bone cement, femoral convex arc section 13 is suitable with the shape and size of tibial component concave-arc part 21, between femoral and tibial component, with joint, interconnects to provide joint motion.Femoral 1 profile is similar to the shape of a hoof, and tibial component 2 profiles are approximate prismatic.
Femoral 1 also comprises the hollow bulb 12 of being located at femoral middle part, and tibial component also comprises the lobe 23 of being located at tibial component top, and lobe 23 stretches in hollow bulb 12.During joint motion, owing to being provided with hollow bulb 12 and lobe 23, femoral can relatively rotate in tibial component, and both interconnect to provide joint motion with joint.Tibial component also comprises the base plane 22 of being located at bottom, and base plane 22 is connected with tibia 5.Tibial component 2 is fixed on the top of tibia 5 by bone cement.
In use, surgeon is removing after the artificial joint thorough debridement of infection, according to the kneed size of patient, select suitable femoral 1 and tibial component 2, and select responsive slow release antibiotic to be added in draw-in groove 3 according to the pathogen infecting, as shown in Figure 3, then femoral 1 is fixed on to femur 4 bottoms by bone cement, tibial component 2 is fixed on the top of tibia 5 by bone cement equally, and with joint, interconnects to provide joint motion between femoral 1 and tibial component 2.
Obviously, above-described embodiment of the present utility model is only for this utility model example is clearly described, and is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all embodiments.All any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in the protection domain of this utility model claim.
Claims (8)
1. the antibiotic-loaded bone cement knee joint active type interval body with medicine, comprise femoral (1) and tibial component (2), between femoral (1) and tibial component (2), with articulated manner, connect, it is characterized in that, in described tibial component (2), be provided with the draw-in groove (3) of storing slow release antibiotic medicine.
2. a kind of antibiotic-loaded bone cement knee joint active type interval body with medicine according to claim 1, is characterized in that, described draw-in groove (3) surface is provided with filter screen.
3. a kind of antibiotic-loaded bone cement knee joint active type interval body with medicine according to claim 2, is characterized in that, described filter screen is titanium filter screen.
4. a kind of antibiotic-loaded bone cement knee joint active type interval body with medicine according to claim 1, is characterized in that, described tibial component (2) is provided with depressed part (24), and draw-in groove (3) is located in depressed part (24).
5. a kind of antibiotic-loaded bone cement knee joint active type interval body with medicine according to claim 1, it is characterized in that, described femoral (1) comprise be located at top femoral concave-arc part (11), be located at the femoral convex arc section (13) of bottom; Described tibial component (2) comprises tibial component concave-arc part (21), and femoral concave-arc part (11) is connected with femur, and femoral convex arc section (13) are connected with tibial component concave-arc part (21).
6. a kind of antibiotic-loaded bone cement knee joint active type interval body with medicine according to claim 5, it is characterized in that, described femoral (1) also comprises the hollow bulb (12) of being located at femoral middle part, described tibial component (2) also comprises the lobe (23) of being located at tibial component top, and lobe (23) stretches in hollow bulb (12).
7. a kind of antibiotic-loaded bone cement knee joint active type interval body with medicine according to claim 6, is characterized in that, described tibial component (2) also comprises the base plane (22) of being located at bottom, and base plane (22) is connected with tibia.
8. according to the arbitrary described a kind of antibiotic-loaded bone cement knee joint active type interval body with medicine of claim 1 to 7, it is characterized in that, described femoral (1) and the material of tibial component (2) are antibiotic-loaded bone cement.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201320575825.7U CN203555861U (en) | 2013-09-17 | 2013-09-17 | Antibiotic bone cement knee joint movable spacer with medicine |
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CN201320575825.7U CN203555861U (en) | 2013-09-17 | 2013-09-17 | Antibiotic bone cement knee joint movable spacer with medicine |
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CN201320575825.7U Expired - Lifetime CN203555861U (en) | 2013-09-17 | 2013-09-17 | Antibiotic bone cement knee joint movable spacer with medicine |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105943202A (en) * | 2016-05-17 | 2016-09-21 | 嘉思特华剑医疗器材(天津)有限公司 | Prosthesis component for drug-release treatment of postoperative infection of joints |
CN106725818A (en) * | 2016-12-30 | 2017-05-31 | 广东工业大学 | A kind of mould for making knee joint bone cement spacer femoral component |
WO2021142688A1 (en) * | 2020-01-13 | 2021-07-22 | 丽水市人民医院 | Spacing and drainage apparatus against infection after knee joint replacement |
-
2013
- 2013-09-17 CN CN201320575825.7U patent/CN203555861U/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105943202A (en) * | 2016-05-17 | 2016-09-21 | 嘉思特华剑医疗器材(天津)有限公司 | Prosthesis component for drug-release treatment of postoperative infection of joints |
CN106725818A (en) * | 2016-12-30 | 2017-05-31 | 广东工业大学 | A kind of mould for making knee joint bone cement spacer femoral component |
WO2021142688A1 (en) * | 2020-01-13 | 2021-07-22 | 丽水市人民医院 | Spacing and drainage apparatus against infection after knee joint replacement |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
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Granted publication date: 20140423 |
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CX01 | Expiry of patent term |